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WO2013125349A1 - Slotter, sheet grooving method, and carton former - Google Patents

Slotter, sheet grooving method, and carton former Download PDF

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Publication number
WO2013125349A1
WO2013125349A1 PCT/JP2013/052736 JP2013052736W WO2013125349A1 WO 2013125349 A1 WO2013125349 A1 WO 2013125349A1 JP 2013052736 W JP2013052736 W JP 2013052736W WO 2013125349 A1 WO2013125349 A1 WO 2013125349A1
Authority
WO
WIPO (PCT)
Prior art keywords
slotter
head
sheet
speed
lower blade
Prior art date
Application number
PCT/JP2013/052736
Other languages
French (fr)
Japanese (ja)
Inventor
誠 猪原
治 波多野
Original Assignee
三菱重工印刷紙工機械株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱重工印刷紙工機械株式会社 filed Critical 三菱重工印刷紙工機械株式会社
Publication of WO2013125349A1 publication Critical patent/WO2013125349A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/146—Cutting, e.g. perforating, punching, slitting or trimming using tools mounted on a drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/30—Construction of rigid or semi-rigid containers collapsible; temporarily collapsed during manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • B31B50/22—Notching; Trimming edges of flaps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • B31B50/256—Surface scoring using tools mounted on a drum

Definitions

  • the present invention relates to a slotter device that performs grooving in the process of manufacturing a cardboard box, a sheet grooving method, and a box making machine.
  • a general box making machine manufactures a box (corrugated cardboard box) by processing a sheet material (for example, a corrugated cardboard sheet), and includes a paper feeding unit, a printing unit, a paper discharge unit, a die cut unit, and folding. Part and a counter ejector part.
  • the paper feeding unit feeds cardboard sheets stacked on the table one by one and sends them to the printing unit at a constant speed.
  • the printing unit has a printing unit and performs printing on a cardboard sheet.
  • the paper discharge unit forms a ruled line that becomes a fold line on the printed cardboard sheet and processes a groove forming a flap and a bonding margin piece for joining.
  • the die-cut portion is used for punching a corrugated cardboard sheet on which ruled lines, grooves, and paste margins are formed.
  • the folding part is flattened by applying glue to the glue margin piece, folding it along the ruled line, and joining the glue margin piece while moving the corrugated cardboard sheet with ruled lines, grooves, glue margin pieces, and hand holes.
  • the counter ejector unit stacks corrugated cardboard boxes in which corrugated sheets are folded and glued, sorts them into a predetermined number of batches, and discharges them.
  • a rotating ruled line roll forms a ruled line on a printed cardboard sheet
  • a slotter head performs a grooving process that forms a flap.
  • the slotter head is configured by fixing a cutting blade to a part of the outer periphery in the circumferential direction, and this cutting blade forms a groove having a predetermined length on the corrugated cardboard sheet being conveyed.
  • the circumferential length of the cutting blade is set with respect to the length of the groove, and the circumferential length of a rotating body other than the cutting blade is set with respect to the box depth.
  • the diameter of the slotter head is set as follows. It is necessary to increase the size, or to provide two slotter heads, and to provide a conveying roller between them, which leads to an increase in size and cost of the apparatus.
  • Patent Document 1 As a solution to such a problem, for example, there is one described in Patent Document 1 below.
  • the corrugated sheet processing apparatus described in Patent Document 1 rotates the cylinder at a low speed when the middle portion of the long corrugated sheet passes, and extends the cylinder when the rear portion of the long corrugated sheet passes below the cylinder.
  • a predetermined slot processing is performed with a rotary blade of a cylinder at the same speed as the conveyance speed of the corrugated cardboard sheet or a high speed rotation.
  • the upper and lower cylinders are rotated at a low speed when the intermediate portion of the corrugated sheet passes, and the upper and lower cylinders are rotated at a high speed when the rear portion of the corrugated sheet passes.
  • Slot processing In this case, when the upper and lower cylinders rotate, the upper and lower rotary blades slot the cardboard sheet, and when the cylinder rotary blades slot, the cardboard sheet is supported by the front and rear conveying rollers. It can be transported. That is, the upper and lower conveying rollers are required before and after the upper and lower cylinders (upper and lower rotary blades).
  • the present invention solves the above-described problems, and provides a slotter device, a sheet grooving method, and a box making machine that can perform processing according to various types of sheets without increasing the size of the device. With the goal.
  • the slotter device of the present invention includes an upper slotter head that is rotatably supported and has a cutting edge on a part of its outer periphery, an upper drive device that can drive and rotate the upper slotter head, A lower blade supported rotatably below the upper slotter head and capable of conveying a sheet, a lower drive device capable of driving and rotating the lower blade, and the upper drive device to reduce the rotation speed of the upper slotter head. And a control device that can be controlled at a speed different from the rotational speed of the blade.
  • the upper slotter head is driven and rotated by the upper driving device, the lower blade is rotated by the lower driving device, and the sheet is inserted between them, so that grooving can be performed while the sheet is conveyed.
  • the control device controls the rotation speed of the upper slotter head to a speed different from the rotation speed of the lower blade by the upper drive device, so that the upper slotter head rotates at a high speed according to the grooving length in a predetermined area.
  • the sheet rotates at a low speed can be easily processed into a desired shape while conveying the sheet, and can be processed according to various types of sheets without increasing the size of the apparatus.
  • the lower blade is a lower slotter head disposed to face the upper slotter head, and can be driven and rotated by the lower drive device.
  • the upper slotter head rotates at a high speed or a low speed according to the grooving length in a predetermined region.
  • the sheet can be easily processed into a desired shape while being conveyed.
  • the control device changes the rotational speed of the upper slotter head to a higher speed or a lower speed than the rotational speed of the lower blade by the upper driving device in accordance with the conveyance position of the sheet. It is said.
  • control device can easily process the sheet into a desired shape while conveying the sheet regardless of the grooving length by controlling the speed at the time of grooving by the upper slotter head and at the time of conveyance. Can do.
  • the upper drive device when the upper slotter head is at a transport position where the sheet is not grooved, rotates the lower blade with a rotation speed of the upper slotter head. It is characterized by changing to a lower speed than the speed.
  • the control device reduces the rotation speed of the upper slotter head by the upper drive device without increasing the diameter of the upper slotter head. Grooving and transport can be performed.
  • the control device uses the upper drive device to determine the rotational speed at the sheet transport position of the upper slotter head, and the rotational speed at the grooving position of the sheet in the upper slotter head. It is characterized by changing to a lower speed side.
  • control device sets the rotation speed when the upper slotter head conveys the sheet by the upper drive device to a lower speed side than the rotation speed when the sheet is grooved so that the diameter of the upper slotter head and the cutting edge are reduced.
  • the sheet can be grooved and conveyed without increasing the circumferential length of the sheet.
  • the slotter device according to the present invention is characterized in that the upper slotter head and the lower blade can convey the sheet while sandwiching the sheet.
  • the sheet can be conveyed with high accuracy by the upper slotter head and the lower blade.
  • the slotter device is characterized in that the upper slotter head sandwiches the sheet between the lower blade and a conveying roller that is rotatable relative to the cutting blade.
  • the sheet can be nipped and conveyed by the conveying roller of the upper slotter head and the lower blade, and the sheet can be conveyed properly by the lower blade even if the rotation speed of the upper slotter head is changed.
  • the slotter device according to the present invention is characterized in that the transport roller can be rotated with the lower blade via the sheet.
  • the conveying roller rotates with the rotation force transmitted from the lower blade via the sheet, it is possible to simplify the apparatus without requiring a separate driving device and to achieve an energy saving effect. .
  • the slotter device is characterized in that the transport roller is coupled to be able to be driven and rotated in synchronization with the lower blade.
  • the transport roller is coupled so as to be able to be driven and rotated in synchronization with the lower blade, it is possible to simplify the apparatus by eliminating the need for a separate drive device, etc., and to achieve an energy saving effect.
  • the sheet can be properly conveyed while preventing slippage between the conveying roller and the sheet.
  • a transport roller driving device capable of driving and rotating the transport roller
  • the control device can drive and rotate the transport roller in synchronization with the lower blade by the transport roller driving device. It is characterized by being.
  • the conveyance roller can be driven and rotated in synchronization with the lower blade by the conveyance roller driving device, slip between the conveyance roller and the sheet can be prevented and the sheet can be conveyed appropriately.
  • a slitter head that is supported so as to be relatively rotatable concentrically with the upper slotter head and provided with a cutting edge on the entire circumference, and is supported rotatably below the slitter head so that a sheet can be conveyed.
  • a slitter head lower blade is provided, and the slitter head is rotatable in synchronization with the slitter head lower blade.
  • the slitter head rotates in synchronization with the lower blade for the slitter head without being affected by the rotational speed of the upper slotter head, the slitter head is moved by the cutting blade between the lower blade for the slitter head and the sheet. Can be cut, and even if the rotation speed of the upper slotter head is changed, the sheet can be cut appropriately.
  • the upper slotter head is provided with a counterweight facing the cutting blade in the radial direction.
  • the weight balance is stably rotated, and the grooving accuracy of the sheet can be improved.
  • the upper slotter head and the lower blade having a cutting edge on a part of the outer periphery are rotated, and the sheet is passed between the upper slotter head and the lower blade.
  • the upper slotter head is moved from the lower blade at a position where the upper slotter head does not groov the sheet. It is characterized by rotating at a low speed.
  • the box making machine of the present invention includes a sheet feeding unit that supplies a sheet, a printing unit that performs printing on the sheet, and a sheet discharge that performs ruled line processing and grooving on the surface of the sheet.
  • a folding part that folds the sheet and joins end parts to form a box, and a counter ejector part that discharges every predetermined number after stacking while counting the box,
  • the paper discharge unit is rotatably supported and has an upper slotter head provided with a cutting edge on a part of the outer periphery, an upper drive device capable of driving and rotating the upper slotter head, and a lower part of the upper slotter head.
  • the lower blade that is supported and can transport the sheet, the lower drive device that can drive and rotate the lower blade, and the upper drive device can control the rotational speed of the upper slotter head to a speed different from the rotational speed of the lower blade.
  • Control equipment When, is characterized in that it has a.
  • the printing unit prints the sheet from the paper feeding unit, the ruled line processing and the grooving processing are performed in the paper discharge unit, and the box is formed by folding the folding unit and joining the end portions.
  • the boxes are stacked while being counted by the counter ejector.
  • the upper slotter head is rotated at a high speed or a low speed in a predetermined area according to the grooving length, etc., and it is possible to easily process the sheet into a desired shape while conveying the sheet.
  • Many types of cardboard boxes can be manufactured without conversion.
  • the rotational speed of the upper slotter head having the cutting blade is controlled to a speed different from the rotational speed of the lower slotter head.
  • FIG. 1 is a schematic configuration diagram illustrating a box making machine according to a first embodiment of the present invention.
  • FIG. 2 is a schematic configuration diagram illustrating the slotter device according to the first embodiment.
  • FIG. 3 is a perspective view illustrating the slotter device according to the first embodiment.
  • FIG. 4 is a cross-sectional view of a main part of the slitter head in the slotter device according to the first embodiment.
  • FIG. 5 is a perspective view of a slitter head in the slotter device according to the first embodiment.
  • FIG. 6 is a cross-sectional view of a main part of the first slotter head in the slotter device according to the first embodiment.
  • FIG. 1 is a schematic configuration diagram illustrating a box making machine according to a first embodiment of the present invention.
  • FIG. 2 is a schematic configuration diagram illustrating the slotter device according to the first embodiment.
  • FIG. 3 is a perspective view illustrating the slotter device according to the first embodiment.
  • FIG. 4 is a
  • FIG. 7 is a cross-sectional view of a main part of the first slotter head in the slotter device according to the first embodiment.
  • FIG. 8 is a schematic view showing the slotter rotation speed with respect to the cardboard sheet.
  • FIG. 9 is an explanatory diagram illustrating grooving by the slotter device according to the first embodiment.
  • FIG. 10 is an explanatory diagram illustrating grooving by the slotter device according to the first embodiment.
  • FIG. 11 is an explanatory diagram illustrating grooving by the slotter device according to the first embodiment.
  • FIG. 12 is a perspective view of the cardboard sheet before processing.
  • FIG. 13 is a perspective view of the corrugated cardboard sheet after ruled line processing and grooving.
  • FIG. 14 is a perspective view of a corrugated cardboard sheet representing a state during folding.
  • FIG. 15 is a perspective view of a cardboard box that is folded and joined.
  • FIG. 16 is a schematic configuration diagram illustrating a slotter device according to a second embodiment of the present invention.
  • FIG. 17 is a schematic view showing the slotter rotation speed with respect to the cardboard sheet.
  • FIG. 1 is a schematic configuration diagram illustrating a box making machine according to a first embodiment of the present invention
  • FIG. 2 is a schematic configuration diagram illustrating a slotter device according to the first embodiment
  • FIG. 3 is a perspective view illustrating the slotter device according to the first embodiment
  • 4 is a cross-sectional view of the main part of the slitter head in the slotter device according to the first embodiment
  • FIG. 5 is a perspective view of the slitter head in the slotter device according to the first embodiment
  • FIGS. 6 and 7 are slotters according to the first embodiment.
  • FIG. 8 is a schematic diagram showing the slotter rotation speed with respect to the corrugated cardboard sheet
  • FIG. 9 to 11 are explanatory views showing grooving by the slotter device according to the first embodiment.
  • 12 is a perspective view of the corrugated cardboard sheet before processing
  • FIG. 13 is a perspective view of the corrugated cardboard sheet after ruled line processing and grooving
  • FIG. 14 is a perspective view of the corrugated cardboard sheet showing a state in the middle of folding
  • FIG. Folded joint And is a perspective view of a cardboard box.
  • the box making machine of Example 1 manufactures a cardboard box (box body) B by processing a cardboard sheet (sheet material) S.
  • the box making machine includes a sheet feeding unit 11, a printing unit 21, a sheet discharging unit 31, a die cutting unit 41, a folding unit 51, arranged linearly in a direction D in which the cardboard sheet S and the cardboard box B are conveyed. It comprises a counter ejector unit 61.
  • the paper feeding unit 11 feeds the cardboard sheets S one by one and sends them to the printing unit 21 at a constant speed.
  • the sheet feeding unit 11 includes a table 12, a front pad 13, a supply roller 14, a suction device 15, and a feed roll 16.
  • the table 12 can be mounted by stacking a large number of cardboard sheets S and is supported so as to be lifted and lowered.
  • the front pad 13 can position the front end position of the cardboard sheets S stacked on the table 12, and a gap through which one cardboard sheet S can pass is secured between the lower end portion and the table 12. .
  • a plurality of supply rollers 14 are arranged in the conveying direction D of the corrugated cardboard sheet S corresponding to the table 12, and when the table 12 descends, the supply roller 14 is at the lowest position among the stacked corrugated cardboard sheets S.
  • the table 12 can be sent forward.
  • the suction device 15 sucks the stacked cardboard sheets S downward, that is, toward the table 12 or the supply roller 14 side.
  • the feed roll 16 can supply the cardboard sheet S sent out by the supply roller 14 to the printing unit 21.
  • the printing unit 21 performs multicolor printing (four color printing in this embodiment) on the surface of the corrugated cardboard sheet S.
  • four printing units 21A, 21B, 21C, and 21D are arranged in series, and printing can be performed on the surface of the cardboard sheet S using four ink colors.
  • Each printing unit 21A, 21B, 21C, 21D is configured in substantially the same manner, and has a printing cylinder 22, an ink supply roll (anilox roll) 23, an ink chamber 24, and a receiving roll 25.
  • a printing cylinder 22 is attached to the outer periphery of the printing cylinder 22 and is rotatably provided.
  • the ink supply roll 23 is disposed so as to be in contact with the printing plate 26 in the vicinity of the printing cylinder 22 and is rotatably provided.
  • the ink chamber 24 stores ink and is provided in the vicinity of the ink supply roll 23.
  • the receiving roll 25 conveys the corrugated cardboard sheet S with the printing cylinder 22 while applying a predetermined printing pressure, and is provided rotatably below the printing cylinder 22. Yes.
  • each printing unit 21A, 21B, 21C, 21D is provided with a pair of upper and lower feed rolls in the front and rear.
  • the paper discharge unit 31 performs a ruled line process and a grooving process on the corrugated cardboard sheet S.
  • the paper discharge unit 31 includes a first ruled line roll 32, a second ruled line roll 33, a slitter head 34, a first slotter head 35, and a second slotter head 36.
  • the first ruled line roll 32 is formed in a circular shape, and a plurality of (four in this embodiment) are arranged at predetermined intervals in the horizontal direction orthogonal to the conveyance direction D of the corrugated cardboard sheet S, and can be rotated by a driving device (not shown). It has become.
  • the second ruled line roll 33 is formed in a circular shape, and a plurality of (four in this embodiment) are arranged at predetermined intervals in the horizontal direction orthogonal to the conveyance direction D of the corrugated cardboard sheet S, and can be rotated by a driving device (not shown). It has become.
  • the first ruled line roll 32 arranged on the lower side applies a ruled line process to the back surface (lower surface) of the cardboard sheet S
  • the second ruled line roll 33 arranged on the lower side is a first ruled line roll.
  • the back surface (lower surface) of the corrugated cardboard sheet S is subjected to ruled line processing, and receiving rolls 37, 38 are rotatably provided synchronously at an upper position facing the ruled line rolls 32, 33. Yes.
  • the slitter head 34 and the first slotter head 35 are formed in a circular shape, and a plurality (in this embodiment, five) of the slitter head 34 and the first slotter head 35 are arranged at predetermined intervals in the horizontal direction orthogonal to the conveying direction D of the cardboard sheet S. Can be rotated.
  • the slitter head 34 is composed of a single piece and is provided corresponding to the end in the width direction of the corrugated cardboard sheet S to be conveyed. The end of the cardboard sheet S in the width direction can be cut.
  • the first slotter head 35 is composed of four pieces and is provided corresponding to a predetermined position in the width direction of the corrugated cardboard sheet S to be conveyed, and grooving is performed at a predetermined position in the corrugated cardboard sheet S. Can do.
  • the second slotter head 36 is composed of four pieces and is provided corresponding to a predetermined position in the width direction of the corrugated cardboard sheet S to be conveyed, and grooving is performed at a predetermined position in the corrugated cardboard sheet S. It can be carried out.
  • the slitter head 34 and the first and second slotter heads 35 and 36 are provided so that the lower blades 39 and 40 can rotate synchronously at lower positions facing each other.
  • the die-cut part 41 performs a hole punching process on the corrugated cardboard sheet S.
  • the die cut portion 41 has a pair of upper and lower feed pieces 42, an anvil cylinder 43 and a head cylinder 44.
  • the feed piece 42 conveys the corrugated cardboard sheet S from above and below, and is rotatably provided.
  • the anvil cylinder 43 and the head cylinder 44 are each formed in a circular shape, and can be rotated in synchronization with a driving device (not shown). In this case, the anvil cylinder 43 has an anvil formed on the outer peripheral portion, while the head cylinder 44 has a head and a die formed at predetermined positions on the outer peripheral portion.
  • the folding unit 51 is formed by folding the cardboard sheet S while moving it in the transport direction D, and joining both end portions in the width direction to form a flat cardboard box B.
  • the folding unit 51 includes an upper conveyor belt 52, lower conveyor belts 53 and 54, and a molding device 55.
  • the upper conveyor belt 52 and the lower conveyor belts 53 and 54 sandwich and convey the cardboard sheet S and the cardboard box B from above and below.
  • the forming device 55 has a pair of left and right forming belts and folds each end of the corrugated cardboard sheet S in the width direction while folding it downward.
  • the folding unit 51 is provided with a gluing device 56.
  • the gluing device 56 has a glue gun, and can paste at a predetermined position on the cardboard sheet S by discharging the glue at a predetermined timing.
  • the counter ejector section 61 is for stacking the cardboard boxes B while counting them, sorting them into a predetermined number of batches, and then discharging them.
  • the counter ejector unit 61 has a hopper device 62.
  • the hopper device 62 has a liftable elevator 63 on which the cardboard boxes B are stacked.
  • the elevator 63 is provided with a front contact plate and a rectifying plate (not shown) as shaping means.
  • a carry-out conveyor 64 is provided below the hopper device 62.
  • the corrugated board sheet S is formed by gluing a corrugated core 303 between the front liner 301 and the back liner 302 as shown in FIG.
  • two folding lines 311 and 312 are formed in the previous process of the box making machine.
  • the folding lines 311 and 312 are for folding the flap when the cardboard box B manufactured by the box making machine is assembled later.
  • Such corrugated cardboard sheets S are stacked on the table 12 of the paper feeding unit 11 as shown in FIG.
  • a large number of cardboard sheets S stacked on the table 12 in the paper feeding unit 11 are first positioned by the front pad 13 and then lowered by the plurality of supply rollers 14 as the table 12 descends.
  • the cardboard sheet S in the lower position is sent out.
  • the corrugated cardboard sheet S is supplied to the printing unit 21 on a predetermined constant side by the pair of feed rolls 16.
  • ink is supplied to the surface of the ink supply roll 23 from the ink chamber 24.
  • ink supply is performed.
  • the ink on the surface of the roll 23 is transferred to the printing plate 26.
  • the cardboard sheet S is conveyed between the printing cylinder 22 and the receiving roll 25, the cardboard sheet S is sandwiched between the printing plate 26 and the receiving roll 25, and printing pressure is applied to the cardboard sheet S.
  • the printed cardboard sheet S is conveyed to the paper discharge unit 31 by a feed roll.
  • the ruled lines 322, 323, and 324 are formed on the back side of the cardboard sheet S, that is, on the back liner 302 side, as shown in FIG. , 325 are formed. Further, when the cardboard sheet S passes through the second ruled line roll 33, the ruled lines 322, 323, 324, and 325 are re-formed on the back side of the cardboard sheet S, that is, on the back liner 302 side, as with the first ruled line roll 32. Is done. Next, when the cardboard sheet S on which the ruled lines 322, 323, 324 and 325 are formed passes through the slitter head 34, the end portion 330 of the cardboard sheet S is cut at the cutting position 321.
  • grooves 331a, 332a, and 333a are formed at the positions of the ruled lines 322, 323, 324, and 325, and the end portion 326a is cut. Further, when the corrugated cardboard sheet S passes through the second slotter head 36, grooves 331b, 332b, 333b are formed at the positions of the ruled lines 322, 323, 324, 325, and the end portion 326b is cut to form the adhesive margin piece 334. Is formed.
  • the cardboard sheet S on which the grooves 331 a, 332 a, 333 a, 331 b, 332 b, 333 b and the adhesive margin piece 334 are formed at the positions of the ruled lines 322, 323, 324, 325 is conveyed to the die cut part 41.
  • the corrugated cardboard sheet S is moved in the conveying direction D by the upper conveying belt 52 and the lower conveying belts 53 and 54, and after the glue is applied by the glue margin piece 334 by the gluing device 56, it is molded.
  • the device 55 folds downward using the ruled lines 322 and 324 as base points.
  • the folding force increases, and the adhesive margin piece 334 and the end portion of the corrugated cardboard sheet S overlying the adhesive margin piece 334 are pressed and brought into close contact with each other, and both end portions of the corrugated cardboard sheet S are joined.
  • the cardboard box B two gaps 351 are formed at the joining portion. And this cardboard box B is conveyed to the counter ejector part 61, as shown in FIG.
  • the cardboard box B detected as a non-defective product by the counter ejector unit 61 is sent to the hopper device 62.
  • the cardboard box B sent to the hopper device 62 is stacked on the elevator 63 in a state in which the front end portion in the transport direction D hits the front contact plate and is shaped by the rectifying plate. Then, when a predetermined number of cardboard boxes B are stacked on the elevator 63, the elevator 63 descends, and the predetermined number of cardboard boxes B are discharged as one batch by the carry-out conveyor 64, and in the subsequent process of the box making machine. Sent.
  • the paper discharge unit 31 performs ruled line processing and grooving processing on the corrugated cardboard sheet S.
  • the paper discharge unit 31 includes a first ruled line roll 32 and a receiving roll 37, a second ruled line roll 33 and a receiving roll 38, a slitter head 34, a first slotter head (upper slotter head) 35, and a lower blade (lower slotter head) 39.
  • the second slitter head (upper slotter head) 36 and the lower blade (lower slotter head) 40 are configured.
  • Each of the pair of upper and lower roll shafts 71 and 72 is rotatably supported by a frame (not shown), and four first ruled line rolls 32 are fixed to the lower roll shaft 71 at predetermined intervals in the axial direction.
  • the four receiving rolls 37 are fixed to the upper roll shaft 72 at predetermined intervals in the axial direction.
  • the pair of upper and lower roll shafts 73 and 74 are rotatably supported at their ends by a frame (not shown), and the four second ruled rolls 33 are spaced apart from the lower roll shaft 73 in the axial direction.
  • the four receiving rolls 38 are fixed to the upper roll shaft 74 at predetermined intervals in the axial direction.
  • each first ruled line roll 32 and each receiving roll 37, each second ruled line roll 33 and each receiving roll 38 are arranged facing each other in the vertical direction.
  • each first ruled line roll 32 has a second ruled line roll 33 arranged on the downstream side thereof with a predetermined gap in the horizontal direction.
  • the first ruled line roll 32 and the second ruled line roll 33 are arranged at the same position in the axial direction of the roll shafts 71 and 73, and the diameter of the second ruled line roll 33 is larger than the diameter of the first ruled line roll 32. It is set small.
  • the first ruled line roll 32 and the receiving roll 37 are arranged to face each other vertically, and when the corrugated cardboard sheet S enters between the first ruled line roll 32 and the receiving roll 37, the outer periphery of the first ruled line roll 32 The outer periphery of the receiving roll 37 sandwiches the corrugated cardboard sheet S, and a ruled line is formed on the lower surface when the corrugated cardboard sheet S passes between the two.
  • the second ruled line roll 33 and the receiving roll 38 are disposed so as to face each other vertically.
  • the outer periphery of the second ruled line roll 33 is The outer periphery of the receiving roll 38 holds the corrugated cardboard sheet S, and when the corrugated cardboard sheet S passes between the two, a ruled line is re-formed on the lower surface.
  • the cardboard sheet S forms one ruled line by rolling the first ruled line roll 32 and the second ruled line roll 33 at the same position.
  • the pair of upper and lower slotter shafts 75 and 76 are rotatably supported at their respective ends by a frame (not shown), and one slitter head 34 and four first slotter heads 35 are pivoted on the upper slotter shaft 75.
  • the five lower blades 39 are fixed to the lower slotter shaft 76 at predetermined intervals in the axial direction.
  • one lower blade (lower blade for slitter head) 39 is disposed corresponding to one slitter head 34, and four lower blades (slotter head) corresponding to four first slotter heads 35. (Lower blade) 39 is disposed.
  • the pair of upper and lower slotter shafts 77 and 78 are rotatably supported at their ends by a frame (not shown), and four second slotter heads 36 are spaced apart from the upper slotter shaft 77 in the axial direction.
  • the four lower blades 40 are fixed to the lower slotter shaft 78 at predetermined intervals in the axial direction.
  • a slitter knife (cutting blade) 79 is fixed to the outer periphery of each slitter head 34, and a slotter knife (cutting blade) 80 is fixed to the outer periphery of each of the four first slotter heads 35.
  • counterweights 81 are fixed to the four first slotter heads 35 on the outer peripheral portions so as to face the slotter knife 80.
  • the four second slotter heads 35 each have a slotter knife (cutting blade) 83 fixed to the outer periphery thereof, and a counterweight 84 fixed to face the slotter knife 83.
  • the slitter knife 79 of the slitter head 34 is provided on the entire circumference, and the slotter knives 80 and 83 of the slotter heads 34 and 35 are provided on a part of the circumferential direction.
  • the slotter knives 80 and 83 and the counterweights 81 and 84 have substantially the same weight and are fixed at positions facing each other in the radial direction.
  • each first slotter head 35 and each lower blade 39, each second slotter head 36 and each lower blade 40 are arranged to face each other in the vertical direction. Further, the slitter head 34 and each first slotter head 35 are arranged with a predetermined gap in the horizontal direction on the downstream side of each second ruled line roll 33, and each first slotter head 35 has each second slot on the downstream side thereof.
  • the slotter head 36 is disposed with a predetermined gap in the horizontal direction.
  • the second ruled line rolls 33, the slitter heads 34, and the first slotter heads 35 are disposed at the same position in the axial direction of the slotter shafts 73 and 76, and the first slotter heads 35 and the second slotter heads. 36 is arranged at the same position in the axial direction of the slotter shafts 75 and 77.
  • the slitter head 34 and the first slotter head 35 and the lower blade 39 are disposed to face each other vertically, and the cardboard sheet S enters between the slitter head 34 and the first slotter head 35 and the lower blade 39, When passing between the two, the end portion is cut by the slitter knife 79 of the slitter head 34, and the groove is cut by the slotter knife 80 of the first slotter head 35.
  • the cardboard sheet S passes between the first slotter head 35 and the lower blade 39, in the region where the slotter knife 80 is not provided on the outer periphery, the outer periphery of the first slotter head 35 and the lower blade 39 It is sandwiched and conveyed by the outer periphery.
  • the second slotter head 36 and the lower blade 40 are disposed so as to face each other vertically, and when the cardboard sheet S enters between the second slotter head 36 and the lower blade 40 and passes between the two, Slotting is performed by the slotter knife 84 of the two slotter head 36.
  • the outer periphery of the second slotter head 36 and the lower blade 40 are not provided in the region where the slotter knife 83 is provided on the outer periphery. It is sandwiched and conveyed by the outer periphery.
  • the slotter shaft 75 is connected to a first motor (upper drive device) 85, and the first slotter head 35 can be driven and rotated by the first motor 85.
  • the slotter shaft 77 is connected to a second motor (upper drive device) 86, and the second motor 86 can drive and rotate the second slotter head 36.
  • the roll shafts 71, 72, 73, 74 and the slotter shafts 76, 78 are drivingly connected to a third motor (lower drive device) 87, and the ruled line rolls 32, 33 and the receiving rolls 37, 38 are driven by the third motor 87. And the lower blades 39 and 40 can be driven and rotated synchronously.
  • the third motor 87, the roll shafts 71, 72, 73, 74, and the slotter shafts 76, 78 are drivingly connected by gears (not shown).
  • the motor drivers 88, 89, 90 are connected to the motors 85, 86, 87, and the motor drivers 88, 89, 90 are connected to the control device 91.
  • the first and second motors 85 and 86 are equipped with rotary encoders 92 and 93 that detect their rotational positions, and the detection results are input to the control device 91.
  • rotary encoders 94 and 95 for detecting the rotational positions of the first and second slotter heads 35 and 36 are mounted, and the detection results are input to the control device 91.
  • the paper feeding unit 11 (see FIG. 1) in the box making machine is provided with a position sensor 96 that detects the position of the cardboard sheet S, and the detection result is input to the control device 91.
  • the control device 91 is connected to the operation device 97 and can control the motors 85, 86, and 87 based on operation signals from the operation device 97.
  • the control device 91 includes the rotational positions of the motors 85 and 86 detected by the rotary encoders 92 and 93, the rotational positions of the first and second slotter heads 35 and 36 detected by the rotary encoders 94 and 95, and the position sensor 96. Based on the detected transport position of the corrugated cardboard sheet S, the first and second motors 85 and 86 are controlled. That is, the control device 91 adjusts the rotation positions of the first and second slotter heads 35 and 36 to the proper positions with respect to the conveyance position of the cardboard sheet S, that is, the slotter knives 80 and 83 are connected to the cardboard sheet S.
  • the rotational speeds of the first and second motors 85 and 86 are controlled so that appropriate positions (grooves 331a, 332a, 333a, 331b, 332b, and 333b) can be processed.
  • the control device 91 performs feedback control based on the rotational positions of the motors 85 and 86.
  • control device 91 controls the rotational speed of the first and second slotter heads 35 and 36 to a speed different from the rotational speed of the lower blades 39 and 40.
  • the rotational speed of the lower blades 39 and 40 is the conveyance speed of the cardboard sheet S.
  • the slitter head 34 has a rotating body 34b rotatably supported by a slotter shaft 75 via a bearing 34a, and a slitter knife 79 is disposed on the entire circumference of the rotating body 34a.
  • the fixing bolt 34d is fixed in a state of being clamped by the fixing member 34c.
  • the receiving roller 39 has a rotating body 39a fixed to the slotter shaft 76, a receiving ring 39b disposed on the outer periphery of the rotating body 39a, and fixed by a fastening bolt 39c.
  • a slotter knife 79 is fixed to a rotating body 34a that is rotatable relative to the slotter shaft 75, and a pair of receiving rings 39b in the receiving roller 39 is a space portion into which the slotter knife 80 enters. 39d is formed.
  • the slitter head 34 can cut the end portion of the corrugated cardboard sheet S by the slitter knife 79 entering the space 39 d of the receiving roller 39.
  • the slitter head 34 is relatively rotatable with respect to the slotter shaft 75 and is capable of rotating relative to the slotter shaft 75 even if the rotational speed of the first slotter head 35 (slotter shaft 75) is different from the rotational speed of the lower blade 39. Since the knife 79 enters and contacts the space 39d of the receiving roller 39, it is rotated by the rotational force of the lower blade 39 without being affected by the rotational speed of the first slotter head 35 (slotter shaft 75). Then, the cardboard sheet S can be cut.
  • a rotating body 35a is fixed to a slotter shaft 75, and a slotter knife 80 is disposed on a part of the outer periphery of the rotating body 35a, and is sandwiched by a fixing member 35b. In this state, it is fixed by a fastening bolt 35c.
  • the first slotter head 35 is located on both sides of the slotter knife 80 in the thickness direction, and a conveyance roller 35e is mounted on the outer peripheral portion of the rotating body 35a via a bearing 35d.
  • the receiving roller 39 has a rotating body 39a fixed to the slotter shaft 76, a receiving ring 39b disposed on the outer periphery of the rotating body 39a, and fixed by a fastening bolt 39c.
  • the pair of conveying rollers 35e in the first slotter head 35 is provided with a slotter knife 80 therebetween, and the pair of receiving rings 39b in the receiving roller 39 has a space portion 39d into which the slotter knife 80 enters. Is formed.
  • the slotter knife 80 of the first slotter head 35 faces the receiving roller 39, the slotter knife 80 enters the space 39d, and the pair of conveying rollers 35e and the pair of receiving rings 39b hold the corrugated cardboard sheet S.
  • the cardboard sheet S can be grooved by being held and conveyed.
  • the pair of conveying rollers 35 e and the pair of receiving rings 39 b sandwich and convey the cardboard sheet S. Can do.
  • the transport roller 35e is relatively rotatable with respect to the first slotter head 35.
  • the receiving ring 39b sandwich the cardboard sheet S, and the cardboard sheet S can be conveyed by the rotational force of the lower blade 39. That is, since the conveyance roller 35e can be rotated by receiving rotational force from the receiving roller 39 (receiving ring 39b) via the corrugated cardboard sheet S, the rotation speed (circumferential speed) of the lower blade 39 and the conveyance roller 35e
  • the rotational speed (peripheral speed) is substantially the same speed, and this speed is the conveying speed of the cardboard sheet S.
  • the control device 91 uses the first and second motors 85 and 86 to adjust the first and second slotter heads 35 and 36 according to the transport position of the cardboard sheet S.
  • the rotational speed is changed to be lower than the rotational speed of the lower blades 39 and 40. That is, when the first and second slotter heads 35 and 36 are in the conveying position where the corrugated cardboard sheet S is not grooved, the control device 91 uses the first and second motors 85 and 86 to perform the first and second slotters.
  • the rotational speed of the heads 35 and 36 is changed to be lower than the rotational speed of the lower blades 39 and 40.
  • control device 91 uses the first and second motors 85 and 86 to change the rotational speed of the first and second slotter heads 35 and 36 at the conveyance position of the cardboard sheet S to the first and second slotter heads 35. , 36, the rotational speed at the grooving position of the corrugated cardboard sheet S is changed to a lower speed side.
  • the speed is set to the same speed V as the peripheral speed (conveying speed of the cardboard sheet S) V of the lower blades 39, 40, and the first and second slotter heads 35, 36 process the grooves 331a (332a, 333a) of the cardboard sheet S. If not, the peripheral speed of the first and second slotter heads 35, 36 is set to a lower speed V1 than the peripheral speed of each of the lower blades 39, 40 (the conveying speed of the cardboard sheet S).
  • the slotter knife 80 of the first slotter head 35 processes the groove 331 a with respect to the cardboard sheet S. Therefore, in this area A1, the circumferential speed of the first slotter head 35 is set to the same speed V as the circumferential speed (conveying speed of the cardboard sheet S) V of the lower blade 39. Then, as shown in FIGS.
  • the peripheral speed of the first slotter head 35 is set to the peripheral speed of the lower blade 39 in this region A2. (Conveying speed of cardboard sheet S) The peripheral speed is slower than V. Of the area A2, in the first half area A21, the first slotter head 35 is decelerated to a predetermined speed, and in the second half area A22, the first slotter head 35 is accelerated to the peripheral speed of the lower blade 39.
  • the slotter knife 83 of the second slotter head 36 enters the groove 331a of the corrugated cardboard sheet S and swings idle. Then, as shown in FIGS. 8 and 11, when the region of the corrugated cardboard sheet S reaches the second slotter head 36, the peripheral speed of the second slotter head 36 is reduced to the lower blade 40 in this region A2. The peripheral speed is slower than the peripheral speed (conveying speed V of the cardboard sheet S). Of the area A2, in the first half area A21, the second slotter head 36 is decelerated to a predetermined speed, and in the area A22, the second slotter head 36 is accelerated to the peripheral speed of the lower blade 40.
  • the slotter knife 83 of the second slotter head 36 processes the groove 331b with respect to the cardboard sheet S. Therefore, in this area A3, the peripheral speed of the second slotter head 36 is set to the same speed V as the peripheral speed of the lower blade 40 (conveying speed of the cardboard sheet S) V.
  • the peripheral speed when the first and second slotter heads 35 and 36 process the grooves 331a (332a and 333a) of the corrugated cardboard sheet S is the peripheral speed of the lower blades 39 and 40 (the corrugated cardboard sheet S of the corrugated cardboard sheet S).
  • the circumferential speed when the first and second slotter heads 35, 36 do not process the grooves 331a (332a, 333a) of the cardboard sheet S is the circumferential speed of the lower blades 39, 40 (conveyance of the cardboard sheet S).
  • the speed is lower than that of the speed, it is not limited to this control method.
  • the first and second slotter heads 35 and 36 are first in regions A1 and A3 where the grooves 331a (332a and 333a) of the cardboard sheet S are processed.
  • the peripheral speed of the second slotter heads 35, 36 is set to a lower speed Va by a predetermined speed than the peripheral speed (conveying speed of the corrugated cardboard sheet S) V of the lower blades 39, 40, and the first and second slotter heads 35, 36 are corrugated.
  • the peripheral speed of the first and second slotter heads 35, 36 is set to the peripheral speed of the lower blades 39, 40 (corrugated sheet S).
  • the lower speed Va1 is set.
  • the peripheral speed of the second slotter heads 35, 36 is set to a lower speed Vb by a predetermined speed than the peripheral speed (conveying speed of the corrugated board sheet S) V of the lower blades 39, 40, and the first and second slotter heads 35, 36 are corrugated.
  • the peripheral speed of the first and second slotter heads 35, 36 is set to the peripheral speed of the lower blades 39, 40 (corrugated sheet S).
  • Vb1 is set at a lower speed than the (conveying speed).
  • the first and second slotter heads 35 and 36 reduce the peripheral speed in the regions A1 and A3 where the grooves 331a of the corrugated cardboard sheet S are processed, while the first and second slotter heads 35 and 36.
  • the peripheral speed deceleration and acceleration of the first and second slotter heads 35 and 36 in the areas A21 and A22 are increased.
  • the peripheral speed difference between the areas A1, A3 and A2 can be reduced, and the load on the motors 85, 86 is reduced.
  • the first and second slotter heads 35 and 36 which are rotatably supported and provided with the slotter knives 80 and 83 on a part of the outer periphery, and the first and second slots.
  • First and second motors 85 and 86 capable of driving and rotating the slotter heads 35 and 36, and a lower blade 39 which is rotatably supported below the first and second slotter heads 35 and 36 and can convey the cardboard sheet S.
  • 40 a third motor 87 capable of driving and rotating the lower blades 39, 40, and the first and second motors 85, 86 to reduce the rotational speed of the first and second slotter heads 35, 36 of the lower blades 39, 40.
  • a control device 91 that can be controlled at a speed different from the rotational speed is provided.
  • the first and second slotter heads 35 and 36 are driven and rotated by the first and second motors 85 and 86, the lower blades 39 and 40 are rotated by the third motor 87, and the cardboard sheet S is inserted therebetween.
  • the cardboard sheet S can be grooved at a predetermined position while being conveyed.
  • the control device 91 controls the rotational speed of the first and second slotter heads 35 and 36 to a speed different from the rotational speed of the lower blades 39 and 40 by the first and second motors 85 and 86, thereby
  • the speed of the first and second slotter heads 35 and 36 is changed in accordance with the grooving length and box depth in the region, and the cardboard sheet S can be easily processed into a desired shape while being conveyed.
  • the control device 91 makes the rotational speed of the first and second slotter heads 35 and 36 lower than the rotational speed of the lower blades 39 and 40 according to the transport position of the cardboard sheet S. It has changed. That is, when the first and second slotter heads 35 and 36 are in a conveyance area where the corrugated cardboard sheet S is not grooved, the control device 91 reduces the rotational speed of the first and second slotter heads 35 and 36 to the lower blade. The rotational speed is changed from 39 and 40 to a lower speed.
  • first and second slotter heads 35 and 36 rotate at a low speed when the corrugated cardboard sheet S is not grooved without increasing the diameter of the first and second slotter heads 35 and 36.
  • the corrugated cardboard sheet S can be appropriately conveyed by the lower blades 39 and 40.
  • the control device 91 determines the rotational speed of the first and second slotter heads 35 and 36 at the conveyance position of the cardboard sheet S, and determines the rotation speed of the cardboard sheet S in the second slotter heads 35 and 36.
  • the rotational speed at the grooving position is changed to a lower speed side. Therefore, the cardboard sheet S can be appropriately grooved and conveyed without increasing the diameter of the first and second slotter heads 35 and 36 and the circumferential length of the slotter knives 80 and 83, and the apparatus It can be simplified.
  • first and second slotter heads 35 and 36 are provided, and the front and rear grooving processes in the corrugated cardboard sheet S are performed separately, so that the diameters and slotter knives 80 and 83 in the first and second slotter heads 35 and 36 are obtained. It is possible to reduce the circumferential length.
  • the first and second slotter heads 35 and 36 and the lower blades 39 and 40 can convey the corrugated cardboard sheet S therebetween.
  • the first and second slotter heads 35 and 36 are provided with transport rollers 35e that can rotate relative to the slotter knives 80 and 83. Accordingly, the corrugated cardboard sheet S can be held and conveyed by the conveying roller 35e of the first and second slotter heads 35 and 36 and the lower blades 39 and 40, and the circumference of the first and second slotter heads 35 and 36 can be conveyed. Even if the speed is different from the peripheral speed of the lower blades 39, 40, the corrugated cardboard sheet S can be conveyed appropriately and with high accuracy.
  • this conveyance roller 35e can be rotated with the lower blades 39 and 40 via the corrugated cardboard sheet S, it is possible to simplify the apparatus by eliminating the need for a driving device or the like, and to provide an energy saving effect. be able to.
  • the slitter head 34 is supported by the bearing 34a on the slotter shaft 75 to which the upper slotter head 35 is mounted so as to be relatively rotatable.
  • the slitter head 34 can be rotated in synchronization with the lower blade 39. It is said. Accordingly, the slitter head 34 is synchronously rotated by receiving the rotational force from the lower blade 39 via the corrugated cardboard sheet S without being affected by the rotational speed of the upper slotter head 35, so that the rotational speed of the upper slotter head 35 is reduced. Even if it is changed, the corrugated cardboard sheet S can be appropriately cut.
  • the first and second slotter heads 35 and 36 are provided with counterweights 81 and 84 facing the radial direction of the slotter knives 80 and 83, respectively. Therefore, when the slotter knives 80 and 83 and the counterweights 81 and 84 are opposed to each other in the radial direction, the weight balance is stabilized when the first and second slotter heads 35 and 36 are rotated. Grooving accuracy can be improved.
  • the first and second slotter heads 35 and 36 and the lower blades 39 and 40 are rotated, and the corrugated sheet S is passed between them.
  • the first and second slotter heads 35 and 36 only convey the cardboard sheet S without grooving.
  • the first and second slotter heads 35 and 36 are rotated at a low speed. Accordingly, it is possible to easily process the cardboard sheet S into a desired shape while conveying the cardboard sheet S regardless of the grooving length, etc., and it is not necessary to provide a separate conveying roller, and the first and second slotters.
  • the cardboard sheet S can be grooved and conveyed without increasing the diameter of the heads 35 and 36.
  • the paper feeding unit 11, the printing unit 21, the paper discharge unit 31, the die cut unit 41, the folding unit 51, and the counter ejector unit 61 are provided.
  • the first and second slotter heads 35 and 36 provided with the slotter knives 80 and 83, the lower blades 39 and 40 capable of transporting the cardboard sheet S, and the first and second slotter heads 35 and 36 are rotated at a lower speed.
  • a control device 91 that can be controlled at a speed different from the rotational speed of the blades 39 and 40 is provided.
  • the cardboard sheet S from the paper supply unit 11 is printed by the printing unit 21, the ruled line processing and the grooving processing are performed by the paper discharge unit 31, and the punching processing is performed by the die cut unit 41.
  • the folding part 51 is folded and the ends are joined to form a cardboard box B, and the cardboard box B is counted while being counted by the counter ejector part 61.
  • the rotational speed of the first and second slotter heads 35 and 36 is changed to a high speed or a low speed, so that the cardboard sheet S is conveyed to a desired shape. Processing can be easily performed, and various types of cardboard boxes can be manufactured without increasing the size of the apparatus.
  • the conveyance roller 35e is provided in the first slotter head 35 via the bearing 35d so as to be relatively rotatable, and can be rotated by receiving rotational force from the receiving roller 39 via the cardboard sheet S.
  • the present invention is not limited to this configuration.
  • the conveying roller 35e since the lower blade 39 can be driven and rotated by the third motor, the conveying roller 35e may be driven and connected by a gear (not shown) so as to be driven and rotated in synchronization with the lower blade 39.
  • a fourth motor (conveying roller driving device) that can drive and rotate the conveying roller 35e may be provided separately, and the conveying roller 35e may be driven and rotated in synchronization with the lower blade 39 by this fourth motor.
  • the transport roller 35e by connecting the transport roller 35e so as to be capable of driving and rotating in synchronization with the lower blade 39, it is possible to simplify the apparatus by eliminating the need for a separate driving device and to achieve an energy saving effect. Further, it is possible to prevent the slip between the conveying roller 35e and the corrugated cardboard sheet S and convey the corrugated cardboard sheet S properly. Further, a fourth motor capable of driving and rotating the conveyance roller is provided, and the fourth motor is driven and controlled by the control device 97, and the conveyance roller 35e can be driven and rotated in synchronization with the lower blade 39. The cardboard sheet S can be properly conveyed while preventing slipping between the cardboard sheet S and the cardboard sheet S.
  • FIG. 16 is a schematic configuration diagram showing the slotter device according to the second embodiment of the present invention
  • FIG. 17 is a schematic diagram showing the slotter rotation speed with respect to the cardboard sheet.
  • symbol is attached
  • the paper discharge unit 101 performs a ruled line process and a grooving process on the corrugated cardboard sheet S.
  • the paper discharge unit 101 includes a first ruled line roll 32 and a receiving roll 37, a second ruled line roll 33 and a receiving roll 38, a slitter head 102, a first slotter head (upper slotter head) 103, and a lower blade (lower slotter head) 104. It is composed of
  • a pair of upper and lower slotter shafts 105 and 106 are rotatably supported at their respective ends by a frame (not shown), and one slitter head 102 and four slotter heads 103 are arranged on the upper slotter shaft 105 at predetermined intervals in the axial direction.
  • the five lower blades 104 are fixed to the lower slotter shaft 106 at predetermined intervals in the axial direction.
  • One slitter head 102 has a slitter knife (cutting blade) 107 fixed to the outer peripheral portion, and each of the four slotter heads 103 has a slotter knife (cutting blade) 108 fixed to the outer peripheral portion, and a counter.
  • a weight 109 is fixed.
  • the slitter knife 107 of the slitter head 102 is provided all around, and the slotter knife 108 of each slotter head 103 is provided in a part of the circumferential direction. Further, the slotter knife 108 and the counterweight 109 have substantially the same weight and are fixed at positions opposed in the radial direction.
  • the slitter head 102 and the slotter head 103 and the lower blade 104 are disposed so as to face each other vertically.
  • the slitter head 102 causes the cardboard
  • the end portion of the sheet S is cut and the cardboard sheet S is grooved by the slotter head 103.
  • the slotter shaft 105 is drivingly connected to a first motor (upper drive device) 111, and the first motor 111 can drive and rotate the slitter head 102 and the slotter head 103.
  • the roll shafts 71, 72, 73, 74 and the slotter shaft 106 are connected to a third motor (lower drive device) 112, and the third motor 112 lowers the ruled line rolls 32, 33 and the receiving rolls 37, 38.
  • the blade 104 can be driven and rotated in synchronization.
  • the motor drivers 113 and 114 are connected to the motors 111 and 112, and the motor drivers 113 and 114 are connected to the control device 115.
  • the first motor 111 is equipped with a rotary encoder 116 that detects its rotational position, and the detection result is input to the control device 115. Further, a rotary encoder 117 that detects the rotational position of the slotter head 103 is mounted, and the detection result is input to the control device 115.
  • a position sensor 96 for detecting the position of the cardboard sheet S is provided, and the detection result is input to the control device 115.
  • the control device 115 is connected to an operation device 118 and can control the motors 111 and 112 based on an operation signal from the operation device 118.
  • the control device 115 determines the first position based on the rotational position of the first motor 111 detected by the rotary encoder 116, the rotational position of the slotter head 103 detected by the rotary encoder 117, and the conveyance position of the cardboard sheet S detected by the position sensor 96.
  • One motor 111 is controlled. That is, the control device 115 makes the rotation position of the slotter head 103 an appropriate position with respect to the conveyance position of the corrugated cardboard sheet S, that is, the slotter knife 108 is moved to an appropriate position (grooves 331a, 332a, 333a, 331b, 332b, 333b) can be processed so that the rotational speed of the first motor 111 is controlled. In this case, the control device 115 performs feedback control based on the rotational position of the first motor 111.
  • the control device 115 controls the rotation speed of the slotter head 103 to a speed different from the rotation speed of the lower blade 104.
  • the rotation speed of the lower blade 104 is the conveyance speed of the cardboard sheet S.
  • the control device 115 changes the rotation speed of the slotter head 103 to be higher or lower than the rotation speed of the lower blade 104 by the first motor 111 according to the conveyance position of the cardboard sheet S. That is, the control device 115 changes the rotation speed of the slotter head 103 to be higher than the rotation speed of the lower blade 104 by the first motor 111 when the slotter head 103 is at a processing position where the cardboard sheet S is grooved.
  • the rotation speed of the slotter head 103 is changed to be lower than the rotation speed of the lower blade 104 by the first motor 111.
  • the control device 115 causes the rotation speed of the slotter head 103 at the conveyance position of the cardboard sheet S to be lower than the rotation speed of the slotter head 103 at the grooving position of the cardboard sheet S by the first motor 111. change. That is, when the slotter head 103 performs grooving of the cardboard sheet S with respect to the conveying speed of the cardboard sheet S by the lower blade 104, the slotter head 103 performs grooving of the cardboard sheet S. When transporting without changing, change to the low speed side.
  • the peripheral speed (rotational speed) of the lower blade 104 that is, the conveying speed of the cardboard sheet S is V
  • the peripheral speed (rotational speed) V11 of the slotter head 103 is set to Change according to the transport position. That is, when the slotter head 103 processes the grooves 331a (332a, 333a) of the corrugated cardboard sheet S (regions A1, A3), the peripheral speed of the slotter head 103 is set to the peripheral speed of the lower blade 104 (conveying speed of the corrugated cardboard sheet S) V.
  • the slotter head 103 When the slotter head 103 is transported without processing the grooves 331a (332a, 333a) of the corrugated cardboard sheet S (region A2), the slotter head 103 is set to have a peripheral speed of the lower blade 104 (corrugated cardboard sheet). S transport speed).
  • the slotter head 103 is accelerated to a predetermined speed in the first half areas A11 and A31, and the slotter head 103 is decelerated to the peripheral speed of the lower blade 104 in the second half areas A12 and A32. .
  • the slotter head 103 is decelerated to a predetermined speed
  • the slotter head 103 is accelerated to the peripheral speed of the lower blade 104.
  • the slotter head 103 that is rotatably supported and has the slotter knife 108 provided on a part of the outer periphery thereof, the first motor 111 that can drive and rotate the slotter head 103, and A lower blade 104 that is rotatably supported below the slotter head 103 and can transport the corrugated cardboard sheet S, a second motor 112 that can drive and rotate the lower blade 104, and a first motor 111 that controls the rotation speed of the slotter head 103.
  • a control device 115 that can be controlled at a speed different from the rotational speed of the lower blade 104 is provided.
  • the slotter head 103 rotates at a high speed or a low speed according to the grooving length or box depth in a predetermined region, and can be easily processed into a desired shape while conveying the cardboard sheet S. There is no need to provide a separate conveying roller or the like, and processing according to the cardboard sheet S sheet can be performed.
  • the control device 115 changes the rotation speed of the slotter head 103 to be higher or lower than the rotation speed of the lower blade 104 by the first motor 111 according to the conveyance position of the cardboard sheet S. ing. That is, the control device 115 changes the rotation speed of the slotter head 103 to be higher than the rotation speed of the lower blade 104 when the slotter head 103 is in a machining area where the cardboard sheet S is grooved. When the sheet S is in a conveyance area where grooving is not performed, the rotation speed of the slotter head 103 is changed to be lower than the rotation speed of the lower blade 104.
  • the slotter head 103 rotates at a low speed when grooving the corrugated cardboard sheet S, and rotates at a low speed when the corrugated cardboard sheet S is not grooved, regardless of the grooving length or the box depth.
  • the cardboard sheet S can be easily processed into a desired shape while appropriately transporting the cardboard sheet S without increasing the diameter of the slotter head 103 and the circumferential length of the slotter knife 108.
  • the two slotter heads 35 and 36 and the two lower blades 39 and 40 are provided, and when the slotter heads 35 and 36 are in the processing region where the corrugated cardboard sheet S is grooved, the periphery thereof is arranged.
  • the peripheral speed is the peripheral speed of the lower blades 39 and 40 (the conveyance speed of the corrugated cardboard sheet S)
  • the slotter heads 35 and 36 are in the conveyance area where the corrugated cardboard sheet S is not grooved
  • the peripheral speed is Although the speed is lower than the peripheral speed of 40 (the conveying speed of the cardboard sheet S), the present invention is not limited to this method. That is, as in the second embodiment, when the slotter heads 35 and 36 are in the processing region where the cardboard sheet S is grooved, the peripheral speed is higher than the peripheral speed of the lower blade 104 (the conveyance speed of the cardboard sheet S). It is good.
  • the box making machine is configured by the paper feeding unit 11, the printing unit 21, the paper discharge unit 31, the die cutting unit 41, the folding unit 51, and the counter ejector unit 61. If the hand holes 341 and 342 are unnecessary, the die cut portion 41 may be omitted.

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Abstract

Simplification of the equipment is made possible in this slotter, sheet grooving method, and carton former by providing first and second slotter heads (35, 36) rotatably supported and provided with slotter knives (80, 83) on part of the outer circumference, first and second motors (85, 86) capable of driving and rotating the first and second slotter heads (35, 36), lower blades (39, 40) capable of transporting a corrugated sheet (S) rotatably supported below the first and second slotter heads (35, 36), a third motor (87) capable of driving and rotating the lower blades (39, 40), and a control device (91) capable of controlling, through the first and second motors (85, 86), the rotational speed of the first and second slotter heads (35, 36) to a speed different from the rotational speed of the lower blades (39, 40).

Description

スロッタ装置及びシートの溝切り加工方法と製函機Slotter device, sheet grooving method and box making machine
　本発明は、段ボール箱を製造する過程で溝切り加工を行うスロッタ装置及びシートの溝切り加工方法、並びに製函機に関するものである。 The present invention relates to a slotter device that performs grooving in the process of manufacturing a cardboard box, a sheet grooving method, and a box making machine.
　一般的な製函機は、シート材（例えば、段ボールシート）を加工することで箱体（段ボール箱）を製造するものであり、給紙部、印刷部、排紙部、ダイカット部、フォルディング部、カウンタエゼクタ部とから構成されている。給紙部は、テーブル上に積み重ねられた段ボールシートを、一枚ずつ送り出して一定の速度で印刷部に送るものである。印刷部は、印刷ユニットを有し、段ボールシートに印刷を行うものである。排紙部は、印刷された段ボールシートに、折り線となる罫線を形成すると共に、フラップをなす溝や接合用の糊代片の加工を施すものである。ダイカット部は、罫線、溝、糊代片が形成された段ボールシートに、手穴用の穴開け加工を施すものである。フォルディング部は、罫線、溝、糊代片、手穴が加工された段ボールシートを移動しながら、糊代片に糊を塗布して罫線に沿って折り畳み、糊代片を接合することで扁平状の段ボール箱を製造するものである。そして、カウンタエゼクタ部は、段ボールシートが折り畳まれて糊付けされた段ボール箱を積み重ね、所定数のバッチに仕分けして排出するものである。 A general box making machine manufactures a box (corrugated cardboard box) by processing a sheet material (for example, a corrugated cardboard sheet), and includes a paper feeding unit, a printing unit, a paper discharge unit, a die cut unit, and folding. Part and a counter ejector part. The paper feeding unit feeds cardboard sheets stacked on the table one by one and sends them to the printing unit at a constant speed. The printing unit has a printing unit and performs printing on a cardboard sheet. The paper discharge unit forms a ruled line that becomes a fold line on the printed cardboard sheet and processes a groove forming a flap and a bonding margin piece for joining. The die-cut portion is used for punching a corrugated cardboard sheet on which ruled lines, grooves, and paste margins are formed. The folding part is flattened by applying glue to the glue margin piece, folding it along the ruled line, and joining the glue margin piece while moving the corrugated cardboard sheet with ruled lines, grooves, glue margin pieces, and hand holes. Shaped cardboard boxes. The counter ejector unit stacks corrugated cardboard boxes in which corrugated sheets are folded and glued, sorts them into a predetermined number of batches, and discharges them.
　このような製函機の排紙部では、回転する罫線ロールが印刷済の段ボールシートに罫線を形成すると共に、スロッタヘッドがフラップをなす溝切り加工を施している。この場合、スロッタヘッドは、外周における周方向の一部に切刃が固定して構成されるものであり、この切刃が搬送中の段ボールシートに所定長さの溝を形成する。この場合、スロッタヘッドは、溝の長さに対して切刃の周方向長さが設定され、箱深さに対して切刃以外の回転体の周方向長さが設定される。ところが、溝の長さや箱深さは、段ボールシート（段ボール箱）の仕様により多種類設定されるものであり、多種類の段ボールシートに対してスロッタヘッドを構成する場合、このスロッタヘッドの径を大きくしたり、２つのスロッタヘッドを設けてその間に搬送ローラを設けたりする必要があり、装置の大型化や高コスト化を招いてしまう。 In the paper discharge unit of such a box making machine, a rotating ruled line roll forms a ruled line on a printed cardboard sheet, and a slotter head performs a grooving process that forms a flap. In this case, the slotter head is configured by fixing a cutting blade to a part of the outer periphery in the circumferential direction, and this cutting blade forms a groove having a predetermined length on the corrugated cardboard sheet being conveyed. In this case, in the slotter head, the circumferential length of the cutting blade is set with respect to the length of the groove, and the circumferential length of a rotating body other than the cutting blade is set with respect to the box depth. However, there are many types of groove lengths and box depths depending on the specifications of the corrugated cardboard sheet (corrugated cardboard box). When a slotter head is configured for various types of corrugated cardboard sheets, the diameter of the slotter head is set as follows. It is necessary to increase the size, or to provide two slotter heads, and to provide a conveying roller between them, which leads to an increase in size and cost of the apparatus.
　このような問題を解決するものとして、例えば、下記特許文献１に記載されたものがある。この特許文献１に記載された段ボールシート加工装置は、長尺段ボールシートの中間部が通過する時には、シリンダを低速回転とし、長尺段ボールシートの後部がシリンダの下方を通過する時には、シリンダを長尺段ボールシートの搬送速度と同速または高速回転とし、シリンダの回転刃で所定のスロット加工を行うものである。 As a solution to such a problem, for example, there is one described in Patent Document 1 below. The corrugated sheet processing apparatus described in Patent Document 1 rotates the cylinder at a low speed when the middle portion of the long corrugated sheet passes, and extends the cylinder when the rear portion of the long corrugated sheet passes below the cylinder. A predetermined slot processing is performed with a rotary blade of a cylinder at the same speed as the conveyance speed of the corrugated cardboard sheet or a high speed rotation.
特開平０５－１２４１３５号公報JP 05-124135 A
　上述した従来の段ボールシート加工装置にあっては、段ボールシートの中間部が通過する時には、上下のシリンダを低速回転とし、段ボールシートの後部が通過する時には、上下のシリンダを高速回転として回転刃でスロット加工している。この場合、上下のシリンダが回転することで、上下の回転刃が段ボールシートをスロット加工しており、シリンダの回転刃がスロット加工しているとき、段ボールシートは、前後の搬送ローラに支持されて搬送可能となっている。即ち、上下のシリンダ（上下の回転刃）に対して、その前後に上下の搬送ローラが必要となってしまう。 In the conventional corrugated sheet processing apparatus described above, the upper and lower cylinders are rotated at a low speed when the intermediate portion of the corrugated sheet passes, and the upper and lower cylinders are rotated at a high speed when the rear portion of the corrugated sheet passes. Slot processing. In this case, when the upper and lower cylinders rotate, the upper and lower rotary blades slot the cardboard sheet, and when the cylinder rotary blades slot, the cardboard sheet is supported by the front and rear conveying rollers. It can be transported. That is, the upper and lower conveying rollers are required before and after the upper and lower cylinders (upper and lower rotary blades).
　本発明は上述した課題を解決するものであり、装置を大型化することなく多種類のシートに応じた加工を行うことができるスロッタ装置及びシートの溝切り加工方法と製函機を提供することを目的とする。 The present invention solves the above-described problems, and provides a slotter device, a sheet grooving method, and a box making machine that can perform processing according to various types of sheets without increasing the size of the device. With the goal.
　上記の目的を達成するための本発明のスロッタ装置は、回転自在に支持されて外周の一部に切刃が設けられる上スロッタヘッドと、前記上スロッタヘッドを駆動回転可能な上駆動装置と、前記上スロッタヘッドの下方に回転自在に支持されてシートを搬送可能な下刃と、前記下刃を駆動回転可能な下駆動装置と、前記上駆動装置により前記上スロッタヘッドの回転速度を前記下刃の回転速度と異なる速度に制御可能な制御装置と、を備えることを特徴とするものである。 In order to achieve the above object, the slotter device of the present invention includes an upper slotter head that is rotatably supported and has a cutting edge on a part of its outer periphery, an upper drive device that can drive and rotate the upper slotter head, A lower blade supported rotatably below the upper slotter head and capable of conveying a sheet, a lower drive device capable of driving and rotating the lower blade, and the upper drive device to reduce the rotation speed of the upper slotter head. And a control device that can be controlled at a speed different from the rotational speed of the blade.
　従って、上駆動装置により上スロッタヘッドを駆動回転し、下駆動装置により下刃を回転し、両者の間にシートを挿入することで、このシートを搬送しながら溝切り加工を行うことができる。そして、制御装置は、上駆動装置により上スロッタヘッドの回転速度を下刃の回転速度と異なる速度に制御することで、所定の領域で溝切り加工長さなどに応じて上スロッタヘッドが高速回転または低速回転することとなり、シートを搬送しながら所望の形状に容易に加工することが可能となり、装置を大型化することなく多種類のシートに応じた加工を行うことができる。 Therefore, the upper slotter head is driven and rotated by the upper driving device, the lower blade is rotated by the lower driving device, and the sheet is inserted between them, so that grooving can be performed while the sheet is conveyed. The control device controls the rotation speed of the upper slotter head to a speed different from the rotation speed of the lower blade by the upper drive device, so that the upper slotter head rotates at a high speed according to the grooving length in a predetermined area. Alternatively, the sheet rotates at a low speed, can be easily processed into a desired shape while conveying the sheet, and can be processed according to various types of sheets without increasing the size of the apparatus.
　本発明のスロッタ装置では、前記下刃は、前記上スロッタヘッドに対向して配置される下スロッタヘッドであり、前記下駆動装置により駆動回転可能であることを特徴としている。 In the slotter device according to the present invention, the lower blade is a lower slotter head disposed to face the upper slotter head, and can be driven and rotated by the lower drive device.
　従って、上スロッタヘッドの回転速度を下スロッタヘッドの回転速度と異なる速度に制御することで、所定の領域で溝切り加工長さなどに応じて上スロッタヘッドが高速回転または低速回転することとなり、シートを搬送しながら所望の形状に容易に加工することができる。 Therefore, by controlling the rotation speed of the upper slotter head to a speed different from the rotation speed of the lower slotter head, the upper slotter head rotates at a high speed or a low speed according to the grooving length in a predetermined region. The sheet can be easily processed into a desired shape while being conveyed.
　本発明のスロッタ装置では、前記制御装置は、前記シートの搬送位置に応じて、前記上駆動装置により前記上スロッタヘッドの回転速度を前記下刃の回転速度より高速または低速に変更することを特徴としている。 In the slotter device according to the present invention, the control device changes the rotational speed of the upper slotter head to a higher speed or a lower speed than the rotational speed of the lower blade by the upper driving device in accordance with the conveyance position of the sheet. It is said.
　従って、制御装置は、上スロッタヘッドによる溝切り加工時と搬送時とで異なる速度に制御することで、溝切り加工長さに拘わらず、シートを搬送しながら所望の形状に容易に加工することができる。 Therefore, the control device can easily process the sheet into a desired shape while conveying the sheet regardless of the grooving length by controlling the speed at the time of grooving by the upper slotter head and at the time of conveyance. Can do.
　本発明のスロッタ装置では、前記制御装置は、前記上スロッタヘッドが前記シートに溝切り加工を行わない搬送位置にあるとき、前記上駆動装置により前記上スロッタヘッドの回転速度を前記下刃の回転速度より低速に変更することを特徴としている。 In the slotter device according to the present invention, when the upper slotter head is at a transport position where the sheet is not grooved, the upper drive device rotates the lower blade with a rotation speed of the upper slotter head. It is characterized by changing to a lower speed than the speed.
　従って、制御装置は、上スロッタヘッドがシートに溝切り加工を行わないとき、上駆動装置により上スロッタヘッドの回転速度を低速にすることで、上スロッタヘッドの径を拡大することなく、シートの溝切り加工や搬送を行うことができる。 Therefore, when the upper slotter head does not perform grooving processing on the sheet, the control device reduces the rotation speed of the upper slotter head by the upper drive device without increasing the diameter of the upper slotter head. Grooving and transport can be performed.
　本発明のスロッタ装置では、前記制御装置は、前記上駆動装置により、前記上スロッタヘッドにおける前記シートの搬送位置での回転速度を、前記上スロッタヘッドにおける前記シートの溝切り加工位置での回転速度より、低速側に変更することを特徴としている。 In the slotter device according to the present invention, the control device uses the upper drive device to determine the rotational speed at the sheet transport position of the upper slotter head, and the rotational speed at the grooving position of the sheet in the upper slotter head. It is characterized by changing to a lower speed side.
　従って、制御装置は、上駆動装置により上スロッタヘッドがシートを搬送するときの回転速度を、シートを溝切り加工するときの回転速度より低速側にすることで、上スロッタヘッドの径や切刃の周方向長さを拡大することなく、シートの溝切り加工や搬送を行うことができる。 Accordingly, the control device sets the rotation speed when the upper slotter head conveys the sheet by the upper drive device to a lower speed side than the rotation speed when the sheet is grooved so that the diameter of the upper slotter head and the cutting edge are reduced. The sheet can be grooved and conveyed without increasing the circumferential length of the sheet.
　本発明のスロッタ装置では、前記上スロッタヘッドと前記下刃は、前記シートを挟持して搬送可能であることを特徴としている。 The slotter device according to the present invention is characterized in that the upper slotter head and the lower blade can convey the sheet while sandwiching the sheet.
　従って、上スロッタヘッドと下刃によりシートを高精度に搬送することができる。 Therefore, the sheet can be conveyed with high accuracy by the upper slotter head and the lower blade.
　本発明のスロッタ装置では、前記上スロッタヘッドは、前記下刃との間で前記シートを挟持すると共に、前記切刃とは相対回転自在な搬送ローラが設けられることを特徴としている。 The slotter device according to the present invention is characterized in that the upper slotter head sandwiches the sheet between the lower blade and a conveying roller that is rotatable relative to the cutting blade.
　従って、上スロッタヘッドの搬送ローラと下刃でシートを挟持して搬送することが可能となり、上スロッタヘッドの回転速度が変更されても、下刃によりシートを適正に搬送することができる。 Therefore, the sheet can be nipped and conveyed by the conveying roller of the upper slotter head and the lower blade, and the sheet can be conveyed properly by the lower blade even if the rotation speed of the upper slotter head is changed.
　本発明のスロッタ装置では、前記搬送ローラは、前記シートを介して前記下刃と連れ回り可能であることを特徴としている。 The slotter device according to the present invention is characterized in that the transport roller can be rotated with the lower blade via the sheet.
　従って、搬送ローラは、シートを介して下刃から回転力が伝達されて連れ回りすることから、別途、駆動装置などを不要として装置を簡素化することができると共に、省エネ効果を奏することができる。 Therefore, since the conveying roller rotates with the rotation force transmitted from the lower blade via the sheet, it is possible to simplify the apparatus without requiring a separate driving device and to achieve an energy saving effect. .
　本発明のスロッタ装置では、前記搬送ローラは、前記下刃と同期して駆動回転可能に連結されることを特徴としている。 The slotter device according to the present invention is characterized in that the transport roller is coupled to be able to be driven and rotated in synchronization with the lower blade.
　従って、搬送ローラは、下刃と同期して駆動回転可能に連結されていることから、別途、駆動装置などを不要として装置を簡素化することができると共に、省エネ効果を奏することができ、また、搬送ローラとシートとの間のスリップを防止してシートを適正に搬送することができる。 Accordingly, since the transport roller is coupled so as to be able to be driven and rotated in synchronization with the lower blade, it is possible to simplify the apparatus by eliminating the need for a separate drive device, etc., and to achieve an energy saving effect. The sheet can be properly conveyed while preventing slippage between the conveying roller and the sheet.
　本発明のスロッタ装置では、前記搬送ローラを駆動回転可能な搬送ローラ用駆動装置が設けられ、前記制御装置は、前記搬送ローラ用駆動装置により前記搬送ローラを前記下刃と同期して駆動回転可能であることを特徴としている。 In the slotter device of the present invention, a transport roller driving device capable of driving and rotating the transport roller is provided, and the control device can drive and rotate the transport roller in synchronization with the lower blade by the transport roller driving device. It is characterized by being.
　従って、搬送ローラは、搬送ローラ用駆動装置により下刃と同期して駆動回転可能であることから、搬送ローラとシートとの間のスリップを防止してシートを適正に搬送することができる。 Therefore, since the conveyance roller can be driven and rotated in synchronization with the lower blade by the conveyance roller driving device, slip between the conveyance roller and the sheet can be prevented and the sheet can be conveyed appropriately.
　本発明のスロッタ装置では、前記上スロッタヘッドと同心上に相対回転自在に支持されて全周に切刃が設けられるスリッタヘッドと、前記スリッタヘッドの下方に回転自在に支持されてシートを搬送可能なスリッタヘッド用下刃とが設けられ、前記スリッタヘッドは、前記スリッタヘッド用下刃と同期して回転可能であることを特徴としている。 In the slotter device of the present invention, a slitter head that is supported so as to be relatively rotatable concentrically with the upper slotter head and provided with a cutting edge on the entire circumference, and is supported rotatably below the slitter head so that a sheet can be conveyed. A slitter head lower blade is provided, and the slitter head is rotatable in synchronization with the slitter head lower blade.
　従って、スリッタヘッドは、上スロッタヘッドの回転速度の影響を受けずに、スリッタヘッド用下刃と同期して回転することから、スリッタヘッドは、スリッタヘッド用下刃との間で切刃によりシートを切断することが可能となり、上スロッタヘッドの回転速度が変更されても、シートを適正に切断することができる。 Therefore, since the slitter head rotates in synchronization with the lower blade for the slitter head without being affected by the rotational speed of the upper slotter head, the slitter head is moved by the cutting blade between the lower blade for the slitter head and the sheet. Can be cut, and even if the rotation speed of the upper slotter head is changed, the sheet can be cut appropriately.
　本発明のスロッタ装置では、前記上スロッタヘッドは、前記切刃の径方向に対向してカウンタウエイトが設けられることを特徴としている。 In the slotter device according to the present invention, the upper slotter head is provided with a counterweight facing the cutting blade in the radial direction.
　従って、上スロッタヘッドは、切刃とカウンタウエイトが径方向に対向していることで、重量バランスが安定して回転することとなり、シートの溝切り加工精度を向上することができる。 Therefore, in the upper slotter head, since the cutting edge and the counterweight are opposed to each other in the radial direction, the weight balance is stably rotated, and the grooving accuracy of the sheet can be improved.
　また、本発明のシートの溝切り加工方法は、外周の一部に切刃を有する上スロッタヘッドと下刃とを回転すると共に、前記上スロッタヘッドと前記下刃との間にシートを通過させることで、前記上スロッタヘッドにより前記シートに溝切り加工を行うシートの溝切り加工方法において、前記上スロッタヘッドが前記シートに溝切り加工を行わない位置で、前記上スロッタヘッドを前記下刃より低速回転することを特徴とするものである。 In the sheet grooving method of the present invention, the upper slotter head and the lower blade having a cutting edge on a part of the outer periphery are rotated, and the sheet is passed between the upper slotter head and the lower blade. Thus, in the sheet grooving method for grooving the sheet by the upper slotter head, the upper slotter head is moved from the lower blade at a position where the upper slotter head does not groov the sheet. It is characterized by rotating at a low speed.
　従って、溝切り加工長さなどに拘わらず、シートを搬送しながら所望の形状に容易に加工することが可能となり、別途搬送ローラなどを設ける必要はなく、また、上スロッタヘッドの径を拡大することなく、シートの溝切り加工や搬送を行うことができる。 Therefore, it is possible to easily process the sheet into a desired shape while conveying the sheet regardless of the grooving length, etc., and it is not necessary to provide a separate conveying roller, and the diameter of the upper slotter head is increased. The sheet can be grooved and conveyed without any trouble.
　また、本発明の製函機は、シートを供給する給紙部と、前記シートに対して印刷を行う印刷部と、前記シートに対して表面に罫線加工を行うと共に溝切り加工を行う排紙部と、前記シートを折り畳んで端部を接合することで箱体を形成するフォルディング部と、前記箱体を計数しながら積み上げた後に所定数ごとに排出するカウンタエゼクタ部と、を備え、前記排紙部は、回転自在に支持されて外周の一部に切刃が設けられる上スロッタヘッドと、前記上スロッタヘッドを駆動回転可能な上駆動装置と、前記上スロッタヘッドの下方に回転自在に支持されてシートを搬送可能な下刃と、前記下刃を駆動回転可能な下駆動装置と、前記上駆動装置により前記上スロッタヘッドの回転速度を前記下刃の回転速度と異なる速度に制御可能な制御装置と、を有することを特徴とするものである。 The box making machine of the present invention includes a sheet feeding unit that supplies a sheet, a printing unit that performs printing on the sheet, and a sheet discharge that performs ruled line processing and grooving on the surface of the sheet. A folding part that folds the sheet and joins end parts to form a box, and a counter ejector part that discharges every predetermined number after stacking while counting the box, The paper discharge unit is rotatably supported and has an upper slotter head provided with a cutting edge on a part of the outer periphery, an upper drive device capable of driving and rotating the upper slotter head, and a lower part of the upper slotter head. The lower blade that is supported and can transport the sheet, the lower drive device that can drive and rotate the lower blade, and the upper drive device can control the rotational speed of the upper slotter head to a speed different from the rotational speed of the lower blade. Control equipment When, is characterized in that it has a.
　従って、給紙部からのシートに対して印刷部で印刷が行われ、排紙部で罫線加工と溝切り加工が行われ、フォルディング部で折り畳んで端部が接合されて箱体が形成され、カウンタエゼクタ部で箱体が計数されながら積み上げる。このとき、溝切り加工長さなどに応じて所定の領域で上スロッタヘッドを高速回転または低速回転することとなり、シートを搬送しながら所望の形状に容易に加工することが可能となり、装置を大型化することなく多種類の段ボール箱を製造することができる。 Therefore, the printing unit prints the sheet from the paper feeding unit, the ruled line processing and the grooving processing are performed in the paper discharge unit, and the box is formed by folding the folding unit and joining the end portions. The boxes are stacked while being counted by the counter ejector. At this time, the upper slotter head is rotated at a high speed or a low speed in a predetermined area according to the grooving length, etc., and it is possible to easily process the sheet into a desired shape while conveying the sheet. Many types of cardboard boxes can be manufactured without conversion.
　本発明のスロッタ装置とシートの溝切り加工方法と製函機によれば、切刃を有する上スロッタヘッドの回転速度を下スロッタヘッド回転速度と異なる速度に制御するので、シートを搬送しながら所望の形状に容易に加工することが可能となり、装置を大型化することなく多種類のシートに応じた加工を行うことができると共に、多種類の段ボール箱を製造することができる。 According to the slotter device, the sheet grooving method, and the box making machine of the present invention, the rotational speed of the upper slotter head having the cutting blade is controlled to a speed different from the rotational speed of the lower slotter head. Thus, it is possible to easily process into various shapes, and it is possible to perform processing according to various types of sheets without increasing the size of the apparatus, and it is possible to manufacture various types of cardboard boxes.
図１は、本発明の実施例１に係る製函機を表す概略構成図である。FIG. 1 is a schematic configuration diagram illustrating a box making machine according to a first embodiment of the present invention. 図２は、実施例１のスロッタ装置を表す概略構成図である。FIG. 2 is a schematic configuration diagram illustrating the slotter device according to the first embodiment. 図３は、実施例１のスロッタ装置を表す斜視図である。FIG. 3 is a perspective view illustrating the slotter device according to the first embodiment. 図４は、実施例１のスロッタ装置におけるスリッタヘッドの要部断面図である。FIG. 4 is a cross-sectional view of a main part of the slitter head in the slotter device according to the first embodiment. 図５は、実施例１のスロッタ装置におけるスリッタヘッドの斜視図である。FIG. 5 is a perspective view of a slitter head in the slotter device according to the first embodiment. 図６は、実施例１のスロッタ装置における第１スロッタヘッドの要部断面図である。FIG. 6 is a cross-sectional view of a main part of the first slotter head in the slotter device according to the first embodiment. 図７は、実施例１のスロッタ装置における第１スロッタヘッドの要部断面図である。FIG. 7 is a cross-sectional view of a main part of the first slotter head in the slotter device according to the first embodiment. 図８は、段ボールシートに対するスロッタ回転速度を表す概略図である。FIG. 8 is a schematic view showing the slotter rotation speed with respect to the cardboard sheet. 図９は、実施例１のスロッタ装置による溝切り加工を表す説明図である。FIG. 9 is an explanatory diagram illustrating grooving by the slotter device according to the first embodiment. 図１０は、実施例１のスロッタ装置による溝切り加工を表す説明図である。FIG. 10 is an explanatory diagram illustrating grooving by the slotter device according to the first embodiment. 図１１は、実施例１のスロッタ装置による溝切り加工を表す説明図である。FIG. 11 is an explanatory diagram illustrating grooving by the slotter device according to the first embodiment. 図１２は、加工前の段ボールシートの斜視図である。FIG. 12 is a perspective view of the cardboard sheet before processing. 図１３は、罫線加工及び溝切加工後の段ボールシートの斜視図である。FIG. 13 is a perspective view of the corrugated cardboard sheet after ruled line processing and grooving. 図１４は、折り畳み途中の状態を表す段ボールシートの斜視図である。FIG. 14 is a perspective view of a corrugated cardboard sheet representing a state during folding. 図１５は、折り畳み接合された段ボール箱の斜視図である。FIG. 15 is a perspective view of a cardboard box that is folded and joined. 図１６は、本発明の実施例２に係るスロッタ装置を表す概略構成図である。FIG. 16 is a schematic configuration diagram illustrating a slotter device according to a second embodiment of the present invention. 図１７は、段ボールシートに対するスロッタ回転速度を表す概略図である。FIG. 17 is a schematic view showing the slotter rotation speed with respect to the cardboard sheet.
　以下に添付図面を参照して、本発明に係るスロッタ装置及びシートの溝切り加工方法と製函機の好適な実施例を詳細に説明する。なお、この実施例により本発明が限定されるものではなく、また、実施例が複数ある場合には、各実施例を組み合わせて構成するものも含むものである。 Hereinafter, preferred embodiments of a slotter device, a sheet grooving method, and a box making machine according to the present invention will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by this Example, Moreover, when there exists multiple Example, what comprises combining each Example is also included.
　図１は、本発明の実施例１に係る製函機を表す概略構成図、図２は、実施例１のスロッタ装置を表す概略構成図、図３は、実施例１のスロッタ装置を表す斜視図、図４は、実施例１のスロッタ装置におけるスリッタヘッドの要部断面図、図５は、実施例１のスロッタ装置におけるスリッタヘッドの斜視図、図６及び図７は、実施例１のスロッタ装置における第１スロッタヘッドの要部断面図、図８は、段ボールシートに対するスロッタ回転速度を表す概略図、図９から図１１は、実施例１のスロッタ装置による溝切り加工を表す説明図、図１２は、加工前の段ボールシートの斜視図、図１３は、罫線加工及び溝切加工後の段ボールシートの斜視図、図１４は、折り畳み途中の状態を表す段ボールシートの斜視図、図１５は、折り畳み接合された段ボール箱の斜視図である。 1 is a schematic configuration diagram illustrating a box making machine according to a first embodiment of the present invention, FIG. 2 is a schematic configuration diagram illustrating a slotter device according to the first embodiment, and FIG. 3 is a perspective view illustrating the slotter device according to the first embodiment. 4 is a cross-sectional view of the main part of the slitter head in the slotter device according to the first embodiment, FIG. 5 is a perspective view of the slitter head in the slotter device according to the first embodiment, and FIGS. 6 and 7 are slotters according to the first embodiment. FIG. 8 is a schematic diagram showing the slotter rotation speed with respect to the corrugated cardboard sheet, and FIGS. 9 to 11 are explanatory views showing grooving by the slotter device according to the first embodiment. 12 is a perspective view of the corrugated cardboard sheet before processing, FIG. 13 is a perspective view of the corrugated cardboard sheet after ruled line processing and grooving, FIG. 14 is a perspective view of the corrugated cardboard sheet showing a state in the middle of folding, and FIG. Folded joint And is a perspective view of a cardboard box.
　実施例１の製函機は、図１に示すように、段ボールシート（シート材）Ｓを加工することで段ボール箱（箱体）Ｂを製造するものである。この製函機は、段ボールシートＳ及び段ボール箱Ｂを搬送する方向Ｄに直線状をなして配置された給紙部１１、印刷部２１、排紙部３１、ダイカット部４１、フォルディング部５１、カウンタエゼクタ部６１とから構成されている。 As shown in FIG. 1, the box making machine of Example 1 manufactures a cardboard box (box body) B by processing a cardboard sheet (sheet material) S. The box making machine includes a sheet feeding unit 11, a printing unit 21, a sheet discharging unit 31, a die cutting unit 41, a folding unit 51, arranged linearly in a direction D in which the cardboard sheet S and the cardboard box B are conveyed. It comprises a counter ejector unit 61.
　給紙部１１は、段ボールシートＳを一枚ずつ送り出して一定の速度で印刷部２１に送るものである。この給紙部１１は、テーブル１２と、前当て１３と、供給ローラ１４と、吸引装置１５と、フィードロール１６とを有している。テーブル１２は、多数枚の段ボールシートＳを積み重ねて載置可能であると共に、昇降可能に支持されている。前当て１３は、テーブル１２上に積み重ねられた段ボールシートＳの前端位置を位置決めすることができ、下端部とテーブル１２との間に１枚の段ボールシートＳが通過可能な隙間が確保されている。供給ローラ１４は、テーブル１２に対応して段ボールシートＳの搬送方向Ｄに複数配置されてなり、テーブル１２が下降したときに、積み重ねられた多数枚の段ボールシートＳのうちの最下位置にあるテーブル１２を前方に送り出すことができる。吸引装置１５は、積み重ねられた段ボールシートＳを下方、つまり、テーブル１２や供給ローラ１４側に吸引するものである。フィードロール１６は、供給ローラ１４により送り出された段ボールシートＳを印刷部２１に供給することができる。 The paper feeding unit 11 feeds the cardboard sheets S one by one and sends them to the printing unit 21 at a constant speed. The sheet feeding unit 11 includes a table 12, a front pad 13, a supply roller 14, a suction device 15, and a feed roll 16. The table 12 can be mounted by stacking a large number of cardboard sheets S and is supported so as to be lifted and lowered. The front pad 13 can position the front end position of the cardboard sheets S stacked on the table 12, and a gap through which one cardboard sheet S can pass is secured between the lower end portion and the table 12. . A plurality of supply rollers 14 are arranged in the conveying direction D of the corrugated cardboard sheet S corresponding to the table 12, and when the table 12 descends, the supply roller 14 is at the lowest position among the stacked corrugated cardboard sheets S. The table 12 can be sent forward. The suction device 15 sucks the stacked cardboard sheets S downward, that is, toward the table 12 or the supply roller 14 side. The feed roll 16 can supply the cardboard sheet S sent out by the supply roller 14 to the printing unit 21.
　印刷部２１は、段ボールシートＳの表面に多色刷り（本実施例では、４色刷り）を行うものである。この印刷部２１は、４つの印刷ユニット２１Ａ，２１Ｂ，２１Ｃ，２１Ｄが直列をなして配置され、段ボールシートＳの表面に４つのインキ色を使用して印刷を行うことができる。各印刷ユニット２１Ａ，２１Ｂ，２１Ｃ，２１Ｄは、ほぼ同様に構成され、印刷シリンダ２２、インキ供給ロール（アニロックスロール）２３、インキチャンバ２４、受ロール２５を有している。印刷シリンダ２２は、その外周部に印版２６が取付けられ、回転可能に設けられている。インキ供給ロール２３は、印刷シリンダ２２の近傍にて印版２６に対接するように配置され、回転可能に設けられている。インキチャンバ２４は、インキを蓄えるものであり、インキ供給ロール２３の近傍に設けられている。受ロール２５は、印刷シリンダ２２との間で段ボールシートＳを挟持することで、所定の印圧を付与しながら搬送するものであり、印刷シリンダ２２の下方に対向して回転可能に設けられている。なお、図示しないが、各印刷ユニット２１Ａ，２１Ｂ，２１Ｃ，２１Ｄは、その前後に上下一対の送りロールが設けられている。 The printing unit 21 performs multicolor printing (four color printing in this embodiment) on the surface of the corrugated cardboard sheet S. In the printing unit 21, four printing units 21A, 21B, 21C, and 21D are arranged in series, and printing can be performed on the surface of the cardboard sheet S using four ink colors. Each printing unit 21A, 21B, 21C, 21D is configured in substantially the same manner, and has a printing cylinder 22, an ink supply roll (anilox roll) 23, an ink chamber 24, and a receiving roll 25. A printing cylinder 22 is attached to the outer periphery of the printing cylinder 22 and is rotatably provided. The ink supply roll 23 is disposed so as to be in contact with the printing plate 26 in the vicinity of the printing cylinder 22 and is rotatably provided. The ink chamber 24 stores ink and is provided in the vicinity of the ink supply roll 23. The receiving roll 25 conveys the corrugated cardboard sheet S with the printing cylinder 22 while applying a predetermined printing pressure, and is provided rotatably below the printing cylinder 22. Yes. Although not shown, each printing unit 21A, 21B, 21C, 21D is provided with a pair of upper and lower feed rolls in the front and rear.
　排紙部３１は、段ボールシートＳに対して、罫線加工を施すと共に溝切り加工を施すものである。この排紙部３１は、第１罫線ロール３２と、第２罫線ロール３３と、スリッタヘッド３４と、第１スロッタヘッド３５と、第２スロッタヘッド３６を有している。 The paper discharge unit 31 performs a ruled line process and a grooving process on the corrugated cardboard sheet S. The paper discharge unit 31 includes a first ruled line roll 32, a second ruled line roll 33, a slitter head 34, a first slotter head 35, and a second slotter head 36.
　第１罫線ロール３２は、円形状に形成され、段ボールシートＳの搬送方向Ｄに直交する水平方向に所定間隔で複数（本実施例では、４個）配置され、図示しない駆動装置により回転可能となっている。第２罫線ロール３３は、円形状に形成され、段ボールシートＳの搬送方向Ｄに直交する水平方向に所定間隔で複数（本実施例では、４個）配置され、図示しない駆動装置により回転可能となっている。この場合、下側に配置された第１罫線ロール３２は、段ボールシートＳの裏面（下面）に罫線加工を施すものであり、下側に配置された第２罫線ロール３３は、第１罫線ロール３２と同様に、段ボールシートＳの裏面（下面）に罫線加工を施すものであり、各罫線ロール３２，３３に対向する上方位置に、受ロール３７，３８が同期して回転可能に設けられている。 The first ruled line roll 32 is formed in a circular shape, and a plurality of (four in this embodiment) are arranged at predetermined intervals in the horizontal direction orthogonal to the conveyance direction D of the corrugated cardboard sheet S, and can be rotated by a driving device (not shown). It has become. The second ruled line roll 33 is formed in a circular shape, and a plurality of (four in this embodiment) are arranged at predetermined intervals in the horizontal direction orthogonal to the conveyance direction D of the corrugated cardboard sheet S, and can be rotated by a driving device (not shown). It has become. In this case, the first ruled line roll 32 arranged on the lower side applies a ruled line process to the back surface (lower surface) of the cardboard sheet S, and the second ruled line roll 33 arranged on the lower side is a first ruled line roll. Similarly to 32, the back surface (lower surface) of the corrugated cardboard sheet S is subjected to ruled line processing, and receiving rolls 37, 38 are rotatably provided synchronously at an upper position facing the ruled line rolls 32, 33. Yes.
　スリッタヘッド３４及び第１スロッタヘッド３５は、円形状に形成され、段ボールシートＳの搬送方向Ｄに直交する水平方向に所定間隔で複数（本実施例では、５個）配置され、図示しない駆動装置により回転可能となっている。スリッタヘッド３４は、１個で構成され、搬送される段ボールシートＳにおける幅方向の端部に対応して設けられており、この段ボールシートＳにおける幅方向の端部を切断することができる。第１スロッタヘッド３５は、４個で構成され、搬送される段ボールシートＳにおける幅方向の所定の位置に対応して設けられており、この段ボールシートＳにおける所定の位置に溝切り加工を行うことができる。第２スロッタヘッド３６は、同様に４個で構成され、搬送される段ボールシートＳにおける幅方向の所定の位置に対応して設けられており、この段ボールシートＳにおける所定の位置に溝切り加工を行うことができる。この場合、スリッタヘッド３４及び第１、第２スロッタヘッド３５，３６は、対向する下方位置に下刃３９，４０が同期して回転可能に設けられている。 The slitter head 34 and the first slotter head 35 are formed in a circular shape, and a plurality (in this embodiment, five) of the slitter head 34 and the first slotter head 35 are arranged at predetermined intervals in the horizontal direction orthogonal to the conveying direction D of the cardboard sheet S. Can be rotated. The slitter head 34 is composed of a single piece and is provided corresponding to the end in the width direction of the corrugated cardboard sheet S to be conveyed. The end of the cardboard sheet S in the width direction can be cut. The first slotter head 35 is composed of four pieces and is provided corresponding to a predetermined position in the width direction of the corrugated cardboard sheet S to be conveyed, and grooving is performed at a predetermined position in the corrugated cardboard sheet S. Can do. Similarly, the second slotter head 36 is composed of four pieces and is provided corresponding to a predetermined position in the width direction of the corrugated cardboard sheet S to be conveyed, and grooving is performed at a predetermined position in the corrugated cardboard sheet S. It can be carried out. In this case, the slitter head 34 and the first and second slotter heads 35 and 36 are provided so that the lower blades 39 and 40 can rotate synchronously at lower positions facing each other.
　ダイカット部４１は、段ボールシートＳに対して、手穴用の穴開け加工を施すものである。このダイカット部４１は、上下一対の送り駒４２と、アンビルシリンダ４３及びヘッドシリンダ４４を有している。送り駒４２は、段ボールシートＳを上下から挟持して搬送するものであり、回転可能に設けられている。アンビルシリンダ４３及びヘッドシリンダ４４は、それぞれ円形状に形成され、図示しない駆動装置により同期して回転可能となっている。この場合、アンビルシリンダ４３は、外周部にアンビルが形成される一方、ヘッドシリンダ４４は、外周部における所定の位置にヘッド及びダイが形成されている。 The die-cut part 41 performs a hole punching process on the corrugated cardboard sheet S. The die cut portion 41 has a pair of upper and lower feed pieces 42, an anvil cylinder 43 and a head cylinder 44. The feed piece 42 conveys the corrugated cardboard sheet S from above and below, and is rotatably provided. The anvil cylinder 43 and the head cylinder 44 are each formed in a circular shape, and can be rotated in synchronization with a driving device (not shown). In this case, the anvil cylinder 43 has an anvil formed on the outer peripheral portion, while the head cylinder 44 has a head and a die formed at predetermined positions on the outer peripheral portion.
　フォルディング部５１は、段ボールシートＳを搬送方向Ｄに移動させながら折り畳み、幅方向の両端部を接合して扁平状の段ボール箱Ｂを形成するものである。このフォルディング部５１は、上搬送ベルト５２と、下搬送ベルト５３，５４と、成形装置５５とを有している。上搬送ベルト５２及び下搬送ベルト５３，５４は、段ボールシートＳ及び段ボール箱Ｂを上下から挟持して搬送するものである。成形装置５５は、左右一対の成形ベルトを有し、この成形ベルトにより段ボールシートＳにおける幅方向の各端部を下方に折り曲げながら折り畳むものである。また、フォルディング部５１は、糊付装置５６が設けられている。この糊付装置５６は、グルーガンを有し、所定のタイミングで糊を吐出することで、段ボールシートＳにおける所定の位置に糊付けを行うことができる。 The folding unit 51 is formed by folding the cardboard sheet S while moving it in the transport direction D, and joining both end portions in the width direction to form a flat cardboard box B. The folding unit 51 includes an upper conveyor belt 52, lower conveyor belts 53 and 54, and a molding device 55. The upper conveyor belt 52 and the lower conveyor belts 53 and 54 sandwich and convey the cardboard sheet S and the cardboard box B from above and below. The forming device 55 has a pair of left and right forming belts and folds each end of the corrugated cardboard sheet S in the width direction while folding it downward. The folding unit 51 is provided with a gluing device 56. The gluing device 56 has a glue gun, and can paste at a predetermined position on the cardboard sheet S by discharging the glue at a predetermined timing.
　カウンタエゼクタ部６１は、段ボール箱Ｂを計数しながら積み重ねた後、所定数のバッチに仕分けした後、排出するものである。このカウンタエゼクタ部６１は、ホッパ装置６２を有している。このホッパ装置６２は、段ボール箱Ｂが積み重ねられる昇降自在なエレベータ６３を有し、このエレベータ６３には、整形手段としての図示しない前当板と整角板とが設けられている。なお、ホッパ装置６２の下方に、搬出コンベア６４が設けられている。 The counter ejector section 61 is for stacking the cardboard boxes B while counting them, sorting them into a predetermined number of batches, and then discharging them. The counter ejector unit 61 has a hopper device 62. The hopper device 62 has a liftable elevator 63 on which the cardboard boxes B are stacked. The elevator 63 is provided with a front contact plate and a rectifying plate (not shown) as shaping means. A carry-out conveyor 64 is provided below the hopper device 62.
　ここで、上述した実施例１の製函機にて、段ボールシートＳから段ボール箱Ｂを製造する動作を、図１、図１０乃至図１５に基づいて説明する。 Here, the operation of manufacturing the cardboard box B from the cardboard sheet S by the box making machine of the first embodiment will be described with reference to FIGS. 1 and 10 to 15.
　実施例１の製函機にて、段ボールシートＳは、図１２に示すように、表ライナ３０１と裏ライナ３０２との間に波形を成す中芯３０３が糊付けされて形成されたものである。この段ボールシートＳは、製函機の前工程にて、２つの折り線３１１，３１２が形成されている。この折り線３１１，３１２は、製函機にて製造された段ボール箱Ｂを、後に組み立てる際にフラップを折るためのものである。このような段ボールシートＳは、図１に示すように、給紙部１１のテーブル１２上に積み重ねられる。 In the box making machine of Example 1, the corrugated board sheet S is formed by gluing a corrugated core 303 between the front liner 301 and the back liner 302 as shown in FIG. In the corrugated cardboard sheet S, two folding lines 311 and 312 are formed in the previous process of the box making machine. The folding lines 311 and 312 are for folding the flap when the cardboard box B manufactured by the box making machine is assembled later. Such corrugated cardboard sheets S are stacked on the table 12 of the paper feeding unit 11 as shown in FIG.
　給紙部１１にて、テーブル１２上に積み重ねられている多数枚の段ボールシートＳは、まず、前当て１３により位置決めされ、次に、テーブル１２が下降することで、複数の供給ローラ１４により最下位置にある段ボールシートＳが送り出される。すると、この段ボールシートＳは、一対のフィードロール１６により所定の一定側で、印刷部２１に供給される。 A large number of cardboard sheets S stacked on the table 12 in the paper feeding unit 11 are first positioned by the front pad 13 and then lowered by the plurality of supply rollers 14 as the table 12 descends. The cardboard sheet S in the lower position is sent out. Then, the corrugated cardboard sheet S is supplied to the printing unit 21 on a predetermined constant side by the pair of feed rolls 16.
　印刷部２１にて、各印刷ユニット２１Ａ，２１Ｂ，２１Ｃ，２１Ｄでは、インキ供給ロール２３の表面にインキチャンバ２４からインキが供給されており、印刷シリンダ２２及びインキ供給ロール２３が回転すると、インキ供給ロール２３の表面のインキが印版２６に転移される。そして、印刷シリンダ２２と受ロール２５との間に段ボールシートＳが搬送されると、この段ボールシートＳが印版２６と受ロール２５とにより挟持され、この段ボールシートＳに印圧が付与されることでその表面に印刷が施される。印刷された段ボールシートＳは、送りロールにより排紙部３１に搬送される。 In the printing unit 21, in each of the printing units 21A, 21B, 21C, and 21D, ink is supplied to the surface of the ink supply roll 23 from the ink chamber 24. When the printing cylinder 22 and the ink supply roll 23 are rotated, ink supply is performed. The ink on the surface of the roll 23 is transferred to the printing plate 26. When the cardboard sheet S is conveyed between the printing cylinder 22 and the receiving roll 25, the cardboard sheet S is sandwiched between the printing plate 26 and the receiving roll 25, and printing pressure is applied to the cardboard sheet S. Thus, the surface is printed. The printed cardboard sheet S is conveyed to the paper discharge unit 31 by a feed roll.
　排紙部３１にて、まず、段ボールシートＳが第１罫線ロール３２を通過するとき、図１３に示すように、段ボールシートＳの裏面側、つまり、裏ライナ３０２側に罫線３２２，３２３，３２４，３２５が形成される。また、段ボールシートＳが第２罫線ロール３３を通過するとき、第１罫線ロール３２と同様に、段ボールシートＳの裏面側、つまり、裏ライナ３０２側に罫線３２２，３２３，３２４，３２５が再形成される。次に、この罫線３２２，３２３，３２４，３２５が形成された段ボールシートＳがスリッタヘッド３４を通過するとき、段ボールシートＳにおける端部３３０が切断位置３２１の位置で切断される。 First, when the cardboard sheet S passes through the first ruled line roll 32 in the paper discharge unit 31, the ruled lines 322, 323, and 324 are formed on the back side of the cardboard sheet S, that is, on the back liner 302 side, as shown in FIG. , 325 are formed. Further, when the cardboard sheet S passes through the second ruled line roll 33, the ruled lines 322, 323, 324, and 325 are re-formed on the back side of the cardboard sheet S, that is, on the back liner 302 side, as with the first ruled line roll 32. Is done. Next, when the cardboard sheet S on which the ruled lines 322, 323, 324 and 325 are formed passes through the slitter head 34, the end portion 330 of the cardboard sheet S is cut at the cutting position 321.
　そして、段ボールシートＳが第１スロッタヘッド３５を通過するとき、罫線３２２，３２３，３２４，３２５の位置に溝３３１ａ，３３２ａ，３３３ａが形成されると共に、端部３２６ａが切断される。また、段ボールシートＳが第２スロッタヘッド３６を通過するとき、罫線３２２，３２３，３２４，３２５の位置に溝３３１ｂ，３３２ｂ，３３３ｂが形成されると共に、端部３２６ｂが切断されて糊代片３３４が形成される。その後、罫線３２２，３２３，３２４，３２５の位置に溝３３１ａ，３３２ａ，３３３ａ，３３１ｂ，３３２ｂ，３３３ｂと糊代片３３４が形成された段ボールシートＳは、ダイカット部４１に搬送される。 When the cardboard sheet S passes through the first slotter head 35, grooves 331a, 332a, and 333a are formed at the positions of the ruled lines 322, 323, 324, and 325, and the end portion 326a is cut. Further, when the corrugated cardboard sheet S passes through the second slotter head 36, grooves 331b, 332b, 333b are formed at the positions of the ruled lines 322, 323, 324, 325, and the end portion 326b is cut to form the adhesive margin piece 334. Is formed. Thereafter, the cardboard sheet S on which the grooves 331 a, 332 a, 333 a, 331 b, 332 b, 333 b and the adhesive margin piece 334 are formed at the positions of the ruled lines 322, 323, 324, 325 is conveyed to the die cut part 41.
　ダイカット部４１にて、図１に示すように、段ボールシートＳがアンビルシリンダ４３とヘッドシリンダ４４との間を通過するとき、手穴３４１，３４２が形成される。そして、手穴３４１，３４２が形成された段ボールシートＳは、フォルディング部５１に搬送される。 In the die cut part 41, as shown in FIG. 1, when the corrugated board sheet S passes between the anvil cylinder 43 and the head cylinder 44, hand holes 341 and 342 are formed. Then, the cardboard sheet S in which the hand holes 341 and 342 are formed is conveyed to the folding unit 51.
　フォルディング部５１にて、段ボールシートＳは、上搬送ベルト５２及び下搬送ベルト５３，５４により搬送方向Ｄに移動されながら、糊付装置５６により糊代片３３４により糊が塗布されてから、成形装置５５により、図１４に示すように、罫線３２２，３２４を基点として下方に折り畳まれる。この折り畳みが１８０度近くまで進むと折り畳み力が強くなり、糊代片３３４とこの糊代片３３４に重なる段ボールシートＳの端部とが押えられて互いに密着され、段ボールシートＳの両端部が接合され、図１５に示すように、段ボール箱Ｂとなる。このとき、段ボール箱Ｂは、接合箇所において２つの隙間３５１が形成される。そして、この段ボール箱Ｂは、図１に示すように、カウンタエゼクタ部６１に搬送される。 In the folding unit 51, the corrugated cardboard sheet S is moved in the conveying direction D by the upper conveying belt 52 and the lower conveying belts 53 and 54, and after the glue is applied by the glue margin piece 334 by the gluing device 56, it is molded. As shown in FIG. 14, the device 55 folds downward using the ruled lines 322 and 324 as base points. When the folding proceeds to nearly 180 degrees, the folding force increases, and the adhesive margin piece 334 and the end portion of the corrugated cardboard sheet S overlying the adhesive margin piece 334 are pressed and brought into close contact with each other, and both end portions of the corrugated cardboard sheet S are joined. Thus, as shown in FIG. At this time, in the cardboard box B, two gaps 351 are formed at the joining portion. And this cardboard box B is conveyed to the counter ejector part 61, as shown in FIG.
　カウンタエゼクタ部６１にて、良品と検出された段ボール箱Ｂは、ホッパ装置６２に送られる。このホッパ装置６２に送られた段ボール箱Ｂは、搬送方向Ｄの先端部が前当板に当たり、整角板により整形された状態でエレベータ６３上に積み重ねられる。そして、所定数の段ボール箱Ｂがエレベータ６３上に積み重ねられると、このエレベータ６３が下降し、所定数の段ボール箱Ｂが１バッチとなって搬出コンベア６４により排出され、製函機の後行程に送られる。 The cardboard box B detected as a non-defective product by the counter ejector unit 61 is sent to the hopper device 62. The cardboard box B sent to the hopper device 62 is stacked on the elevator 63 in a state in which the front end portion in the transport direction D hits the front contact plate and is shaped by the rectifying plate. Then, when a predetermined number of cardboard boxes B are stacked on the elevator 63, the elevator 63 descends, and the predetermined number of cardboard boxes B are discharged as one batch by the carry-out conveyor 64, and in the subsequent process of the box making machine. Sent.
　ここで、本発明のスロッタ装置としての排紙部３１について詳細に説明する。 Here, the paper discharge unit 31 as the slotter device of the present invention will be described in detail.
　排紙部３１は、図２及び図３に示すように、段ボールシートＳに対して、罫線加工を施すと共に溝切り加工を施すものである。この排紙部３１は、第１罫線ロール３２と受ロール３７、第２罫線ロール３３と受ロール３８、スリッタヘッド３４及び第１スロッタヘッド（上スロッタヘッド）３５と下刃（下スロッタヘッド）３９、第２スリッタヘッド（上スロッタヘッド）３６と下刃（下スロッタヘッド）４０から構成されている。 As shown in FIGS. 2 and 3, the paper discharge unit 31 performs ruled line processing and grooving processing on the corrugated cardboard sheet S. The paper discharge unit 31 includes a first ruled line roll 32 and a receiving roll 37, a second ruled line roll 33 and a receiving roll 38, a slitter head 34, a first slotter head (upper slotter head) 35, and a lower blade (lower slotter head) 39. The second slitter head (upper slotter head) 36 and the lower blade (lower slotter head) 40 are configured.
　上下一対のロール軸７１，７２は、各端部が図示しないフレームに回転自在に支持されており、下ロール軸７１に４個の第１罫線ロール３２が軸方向に所定間隔をあけて固定され、上ロール軸７２に４個の受ロール３７が軸方向に所定間隔をあけて固定されている。また、上下一対のロール軸７３，７４は、各端部が図示しないフレームに回転自在に支持されており、下ロール軸７３に４個の第２罫線ロール３３が軸方向に所定間隔をあけて固定され、上ロール軸７４に４個の受ロール３８がその軸方向に所定間隔をあけて固定されている。 Each of the pair of upper and lower roll shafts 71 and 72 is rotatably supported by a frame (not shown), and four first ruled line rolls 32 are fixed to the lower roll shaft 71 at predetermined intervals in the axial direction. The four receiving rolls 37 are fixed to the upper roll shaft 72 at predetermined intervals in the axial direction. The pair of upper and lower roll shafts 73 and 74 are rotatably supported at their ends by a frame (not shown), and the four second ruled rolls 33 are spaced apart from the lower roll shaft 73 in the axial direction. The four receiving rolls 38 are fixed to the upper roll shaft 74 at predetermined intervals in the axial direction.
　この場合、各第１罫線ロール３２と各受ロール３７、各第２罫線ロール３３と各受ロール３８は、上下に対向して配置されている。また、各第１罫線ロール３２は、その下流側に各第２罫線ロール３３が水平方向に所定隙間をあけて配置されている。そして、第１罫線ロール３２と第２罫線ロール３３は、ロール軸７１，７３の軸方向における同位置に配置されており、第１罫線ロール３２の径に対して第２罫線ロール３３の径が小さく設定されている。 In this case, each first ruled line roll 32 and each receiving roll 37, each second ruled line roll 33 and each receiving roll 38 are arranged facing each other in the vertical direction. In addition, each first ruled line roll 32 has a second ruled line roll 33 arranged on the downstream side thereof with a predetermined gap in the horizontal direction. The first ruled line roll 32 and the second ruled line roll 33 are arranged at the same position in the axial direction of the roll shafts 71 and 73, and the diameter of the second ruled line roll 33 is larger than the diameter of the first ruled line roll 32. It is set small.
　従って、第１罫線ロール３２と受ロール３７とは上下に対向して配置され、段ボールシートＳがこの第１罫線ロール３２と受ロール３７の間に侵入すると、第１罫線ロール３２の外周部と受ロール３７の外周部とが段ボールシートＳを挟持し、この段ボールシートＳが両者の間を通過するときに下面に罫線が形成される。また、第２罫線ロール３３と受ロール３８とは上下に対向して配置され、段ボールシートＳがこの第２罫線ロール３３と受ロール３８の間に侵入すると、第２罫線ロール３３の外周部と受ロール３８の外周部とが段ボールシートＳを挟持し、この段ボールシートＳが両者の間を通過するときに下面に罫線が再形成される。この場合、段ボールシートＳは、同位置に第１罫線ロール３２と第２罫線ロール３３が転動することで、一つの罫線が形成される。 Accordingly, the first ruled line roll 32 and the receiving roll 37 are arranged to face each other vertically, and when the corrugated cardboard sheet S enters between the first ruled line roll 32 and the receiving roll 37, the outer periphery of the first ruled line roll 32 The outer periphery of the receiving roll 37 sandwiches the corrugated cardboard sheet S, and a ruled line is formed on the lower surface when the corrugated cardboard sheet S passes between the two. The second ruled line roll 33 and the receiving roll 38 are disposed so as to face each other vertically. When the corrugated cardboard sheet S enters between the second ruled line roll 33 and the receiving roll 38, the outer periphery of the second ruled line roll 33 is The outer periphery of the receiving roll 38 holds the corrugated cardboard sheet S, and when the corrugated cardboard sheet S passes between the two, a ruled line is re-formed on the lower surface. In this case, the cardboard sheet S forms one ruled line by rolling the first ruled line roll 32 and the second ruled line roll 33 at the same position.
　また、上下一対のスロッタ軸７５，７６は、各端部が図示しないフレームに回転自在に支持されており、上スロッタ軸７５に１個のスリッタヘッド３４と４個の第１スロッタヘッド３５が軸方向に所定間隔をあけて固定され、下スロッタ軸７６に５個の下刃３９が軸方向に所定間隔をあけて固定されている。この場合、１個のスリッタヘッド３４に対応して１個の下刃（スリッタヘッド用下刃）３９が配置され、４個の第１スロッタヘッド３５に対応して４個の下刃（スロッタヘッド用下刃）３９が配置される。また、上下一対のスロッタ軸７７，７８は、各端部が図示しないフレームに回転自在に支持されており、上スロッタ軸７７に４個の第２スロッタヘッド３６が軸方向に所定間隔をあけて固定され、下スロッタ軸７８に４個の下刃４０がその軸方向に所定間隔をあけて固定されている。 The pair of upper and lower slotter shafts 75 and 76 are rotatably supported at their respective ends by a frame (not shown), and one slitter head 34 and four first slotter heads 35 are pivoted on the upper slotter shaft 75. The five lower blades 39 are fixed to the lower slotter shaft 76 at predetermined intervals in the axial direction. In this case, one lower blade (lower blade for slitter head) 39 is disposed corresponding to one slitter head 34, and four lower blades (slotter head) corresponding to four first slotter heads 35. (Lower blade) 39 is disposed. The pair of upper and lower slotter shafts 77 and 78 are rotatably supported at their ends by a frame (not shown), and four second slotter heads 36 are spaced apart from the upper slotter shaft 77 in the axial direction. The four lower blades 40 are fixed to the lower slotter shaft 78 at predetermined intervals in the axial direction.
　そして、１個のスリッタヘッド３４は、外周部にスリッタナイフ（切刃）７９が固定され、４個の第１スロッタヘッド３５は、それぞれ外周部にスロッタナイフ（切刃）８０が固定されている。また、４個の第１スロッタヘッド３５は、それぞれ外周部にスロッタナイフ８０に対向してカウンタウエイト８１が固定されている。また、４個の第２スロッタヘッド３５は、それぞれ外周部にスロッタナイフ（切刃）８３が固定されると共に、スロッタナイフ８３に対向してカウンタウエイト８４が固定されている。この場合、スリッタヘッド３４のスリッタナイフ７９は、全周に設けられ、各スロッタヘッド３４，３５のスロッタナイフ８０，８３は、周方向の一部に設けられている。そして、各スロッタヘッド３４，３５にて、スロッタナイフ８０，８３とカウンタウエイト８１，８４は、ほぼ同様の重量であって、径方向に対向した位置に固定されている。 A slitter knife (cutting blade) 79 is fixed to the outer periphery of each slitter head 34, and a slotter knife (cutting blade) 80 is fixed to the outer periphery of each of the four first slotter heads 35. . In addition, counterweights 81 are fixed to the four first slotter heads 35 on the outer peripheral portions so as to face the slotter knife 80. The four second slotter heads 35 each have a slotter knife (cutting blade) 83 fixed to the outer periphery thereof, and a counterweight 84 fixed to face the slotter knife 83. In this case, the slitter knife 79 of the slitter head 34 is provided on the entire circumference, and the slotter knives 80 and 83 of the slotter heads 34 and 35 are provided on a part of the circumferential direction. In each of the slotter heads 34 and 35, the slotter knives 80 and 83 and the counterweights 81 and 84 have substantially the same weight and are fixed at positions facing each other in the radial direction.
　また、スリッタヘッド３４及び各第１スロッタヘッド３５と各下刃３９、各第２スロッタヘッド３６と各下刃４０は、上下に対向して配置されている。また、スリッタヘッド３４及び各第１スロッタヘッド３５は、各第２罫線ロール３３の下流側に水平方向に所定隙間をあけて配置され、各第１スロッタヘッド３５は、その下流側に各第２スロッタヘッド３６が水平方向に所定隙間をあけて配置されている。そして、各第２罫線ロール３３とスリッタヘッド３４及び各第１スロッタヘッド３５は、スロッタ軸７３，７６の軸方向における同位置に配置されており、各第１スロッタヘッド３５と各第２スロッタヘッド３６は、スロッタ軸７５，７７の軸方向における同位置に配置されている。 Further, the slitter head 34, each first slotter head 35 and each lower blade 39, each second slotter head 36 and each lower blade 40 are arranged to face each other in the vertical direction. Further, the slitter head 34 and each first slotter head 35 are arranged with a predetermined gap in the horizontal direction on the downstream side of each second ruled line roll 33, and each first slotter head 35 has each second slot on the downstream side thereof. The slotter head 36 is disposed with a predetermined gap in the horizontal direction. The second ruled line rolls 33, the slitter heads 34, and the first slotter heads 35 are disposed at the same position in the axial direction of the slotter shafts 73 and 76, and the first slotter heads 35 and the second slotter heads. 36 is arranged at the same position in the axial direction of the slotter shafts 75 and 77.
　従って、スリッタヘッド３４及び第１スロッタヘッド３５と下刃３９とは上下に対向して配置され、段ボールシートＳがこのスリッタヘッド３４及び第１スロッタヘッド３５と下刃３９の間に侵入し、両者の間を通過するとき、スリッタヘッド３４のスリッタナイフ７９により端部が切断されると共に、第１スロッタヘッド３５のスロッタナイフ８０により溝切り加工される。なお、段ボールシートＳは、第１スロッタヘッド３５と下刃３９の間を通過するとき、外周部にスロッタナイフ８０が設けられていない領域では、第１スロッタヘッド３５の外周部と下刃３９の外周部とに挟持されて搬送される。また、第２スロッタヘッド３６と下刃４０とは上下に対向して配置され、段ボールシートＳがこの第２スロッタヘッド３６と下刃４０の間に侵入し、両者の間を通過するとき、第２スロッタヘッド３６のスロッタナイフ８４により溝切り加工される。なお、段ボールシートＳは、第２スロッタヘッド３６と下刃４０の間を通過するとき、外周部にスロッタナイフ８３が設けられていない領域では、第２スロッタヘッド３６の外周部と下刃４０の外周部とに挟持されて搬送される。 Accordingly, the slitter head 34 and the first slotter head 35 and the lower blade 39 are disposed to face each other vertically, and the cardboard sheet S enters between the slitter head 34 and the first slotter head 35 and the lower blade 39, When passing between the two, the end portion is cut by the slitter knife 79 of the slitter head 34, and the groove is cut by the slotter knife 80 of the first slotter head 35. When the cardboard sheet S passes between the first slotter head 35 and the lower blade 39, in the region where the slotter knife 80 is not provided on the outer periphery, the outer periphery of the first slotter head 35 and the lower blade 39 It is sandwiched and conveyed by the outer periphery. Further, the second slotter head 36 and the lower blade 40 are disposed so as to face each other vertically, and when the cardboard sheet S enters between the second slotter head 36 and the lower blade 40 and passes between the two, Slotting is performed by the slotter knife 84 of the two slotter head 36. When the cardboard sheet S passes between the second slotter head 36 and the lower blade 40, the outer periphery of the second slotter head 36 and the lower blade 40 are not provided in the region where the slotter knife 83 is provided on the outer periphery. It is sandwiched and conveyed by the outer periphery.
　そして、スロッタ軸７５は、第１モータ（上駆動装置）８５が駆動連結され、この第１モータ８５により第１スロッタヘッド３５を駆動回転することができる。また、スロッタ軸７７は、第２モータ（上駆動装置）８６が駆動連結され、この第２モータ８６により第２スロッタヘッド３６を駆動回転することができる。また、ロール軸７１，７２，７３，７４及びスロッタ軸７６，７８は、第３モータ（下駆動装置）８７が駆動連結され、この第３モータ８７により罫線ロール３２，３３と受ロール３７，３８と下刃３９，４０を同期して駆動回転することができる。この場合、第３モータ８７と各ロール軸７１，７２，７３，７４及び各スロッタ軸７６，７８とは、図示しないギヤにより駆動連結されている。 The slotter shaft 75 is connected to a first motor (upper drive device) 85, and the first slotter head 35 can be driven and rotated by the first motor 85. The slotter shaft 77 is connected to a second motor (upper drive device) 86, and the second motor 86 can drive and rotate the second slotter head 36. The roll shafts 71, 72, 73, 74 and the slotter shafts 76, 78 are drivingly connected to a third motor (lower drive device) 87, and the ruled line rolls 32, 33 and the receiving rolls 37, 38 are driven by the third motor 87. And the lower blades 39 and 40 can be driven and rotated synchronously. In this case, the third motor 87, the roll shafts 71, 72, 73, 74, and the slotter shafts 76, 78 are drivingly connected by gears (not shown).
　各モータ８５，８６，８７は、モータドライバ８８，８９，９０が接続され、このモータドライバ８８，８９，９０は、制御装置９１に接続されている。また、第１、第２モータ８５，８６は、その回転位置を検出するロータリエンコーダ９２，９３が装着され、検出結果が制御装置９１に入力される。更に、第１、第２スロッタヘッド３５，３６の回転位置を検出するロータリエンコーダ９４，９５が装着され、検出結果が制御装置９１に入力される。また、製函機における給紙部１１（図１参照）は、段ボールシートＳの位置を検出する位置センサ９６が設けられており、検出結果が制御装置９１に入力される。また、制御装置９１は、操作装置９７が接続されており、操作装置９７からの操作信号に基づいて各モータ８５，８６，８７を制御可能となっている。 The motor drivers 88, 89, 90 are connected to the motors 85, 86, 87, and the motor drivers 88, 89, 90 are connected to the control device 91. The first and second motors 85 and 86 are equipped with rotary encoders 92 and 93 that detect their rotational positions, and the detection results are input to the control device 91. Further, rotary encoders 94 and 95 for detecting the rotational positions of the first and second slotter heads 35 and 36 are mounted, and the detection results are input to the control device 91. Further, the paper feeding unit 11 (see FIG. 1) in the box making machine is provided with a position sensor 96 that detects the position of the cardboard sheet S, and the detection result is input to the control device 91. The control device 91 is connected to the operation device 97 and can control the motors 85, 86, and 87 based on operation signals from the operation device 97.
　そして、制御装置９１は、ロータリエンコーダ９２，９３が検出した各モータ８５，８６の回転位置、ロータリエンコーダ９４，９５が検出した第１、第２スロッタヘッド３５，３６の回転位置、位置センサ９６が検出した段ボールシートＳの搬送位置に基づいて第１、第２モータ８５，８６を制御する。即ち、制御装置９１は、段ボールシートＳの搬送位置に対して第１、第２スロッタヘッド３５，３６の回転位置が適正位置となるように、つまり、各スロッタナイフ８０，８３が段ボールシートＳの適正位置（溝３３１ａ，３３２ａ，３３３ａ，３３１ｂ，３３２ｂ，３３３ｂ）を加工することができるように、第１、第２モータ８５，８６の回転速度を制御する。この場合、制御装置９１は、各モータ８５，８６の回転位置によりフィードバック制御を行っている。 The control device 91 includes the rotational positions of the motors 85 and 86 detected by the rotary encoders 92 and 93, the rotational positions of the first and second slotter heads 35 and 36 detected by the rotary encoders 94 and 95, and the position sensor 96. Based on the detected transport position of the corrugated cardboard sheet S, the first and second motors 85 and 86 are controlled. That is, the control device 91 adjusts the rotation positions of the first and second slotter heads 35 and 36 to the proper positions with respect to the conveyance position of the cardboard sheet S, that is, the slotter knives 80 and 83 are connected to the cardboard sheet S. The rotational speeds of the first and second motors 85 and 86 are controlled so that appropriate positions ( grooves 331a, 332a, 333a, 331b, 332b, and 333b) can be processed. In this case, the control device 91 performs feedback control based on the rotational positions of the motors 85 and 86.
　そして、本実施例にて、制御装置９１は、第１、第２スロッタヘッド３５，３６の回転速度を各下刃３９，４０の回転速度と異なる速度に制御する。この場合、各下刃３９，４０の回転速度とは、段ボールシートＳの搬送速度である。 In the present embodiment, the control device 91 controls the rotational speed of the first and second slotter heads 35 and 36 to a speed different from the rotational speed of the lower blades 39 and 40. In this case, the rotational speed of the lower blades 39 and 40 is the conveyance speed of the cardboard sheet S.
　スリッタヘッド３４は、図４及び図５に示すように、スロッタ軸７５に軸受３４ａを介して回転体３４ｂが回転自在に支持され、この回転体３４ａの外周の全周にスリッタナイフ７９が配置され、固定部材３４ｃにより挟持された状態で締結ボルト３４ｄにより固定されている。一方、受ローラ３９は、スロッタ軸７６に回転体３９ａが固定され、この回転体３９ａの外周に受リング３９ｂが配置され、締結ボルト３９ｃにより固定されている。 As shown in FIGS. 4 and 5, the slitter head 34 has a rotating body 34b rotatably supported by a slotter shaft 75 via a bearing 34a, and a slitter knife 79 is disposed on the entire circumference of the rotating body 34a. The fixing bolt 34d is fixed in a state of being clamped by the fixing member 34c. On the other hand, the receiving roller 39 has a rotating body 39a fixed to the slotter shaft 76, a receiving ring 39b disposed on the outer periphery of the rotating body 39a, and fixed by a fastening bolt 39c.
　この場合、スリッタヘッド３４は、スロッタ軸７５と相対回転自在な回転体３４ａにスロッタナイフ７９が固定されており、受ローラ３９における一対の受リング３９ｂは、その間にスロッタナイフ８０が侵入する空間部３９ｄが形成されている。そして、スリッタヘッド３４は、スリッタナイフ７９が受ローラ３９の空間部３９ｄに侵入することで、この段ボールシートＳの端部の切断を行うことができる。 In this case, in the slitter head 34, a slotter knife 79 is fixed to a rotating body 34a that is rotatable relative to the slotter shaft 75, and a pair of receiving rings 39b in the receiving roller 39 is a space portion into which the slotter knife 80 enters. 39d is formed. The slitter head 34 can cut the end portion of the corrugated cardboard sheet S by the slitter knife 79 entering the space 39 d of the receiving roller 39.
　このとき、第１スロッタヘッド３５（スロッタ軸７５）の回転速度と下刃３９の回転速度と異なる速度であっても、スリッタヘッド３４は、スロッタ軸７５に対して相対回転自在であると共に、スリッタナイフ７９が受ローラ３９の空間部３９ｄに侵入して接触していることから、第１スロッタヘッド３５（スロッタ軸７５）の回転速度に影響を受けることなく、下刃３９の回転力により連れ回りし、段ボールシートＳを切断することができる。 At this time, the slitter head 34 is relatively rotatable with respect to the slotter shaft 75 and is capable of rotating relative to the slotter shaft 75 even if the rotational speed of the first slotter head 35 (slotter shaft 75) is different from the rotational speed of the lower blade 39. Since the knife 79 enters and contacts the space 39d of the receiving roller 39, it is rotated by the rotational force of the lower blade 39 without being affected by the rotational speed of the first slotter head 35 (slotter shaft 75). Then, the cardboard sheet S can be cut.
　また、第１スロッタヘッド３５は、図６に示すように、スロッタ軸７５に回転体３５ａが固定され、この回転体３５ａの外周の一部にスロッタナイフ８０が配置され、固定部材３５ｂにより挟持された状態で締結ボルト３５ｃにより固定されている。また、第１スロッタヘッド３５は、スロッタナイフ８０における厚さ方向の両側に位置して、回転体３５ａの外周部に軸受３５ｄを介して搬送ローラ３５ｅが装着されている。一方、受ローラ３９は、スロッタ軸７６に回転体３９ａが固定され、この回転体３９ａの外周に受リング３９ｂが配置され、締結ボルト３９ｃにより固定されている。 Further, as shown in FIG. 6, in the first slotter head 35, a rotating body 35a is fixed to a slotter shaft 75, and a slotter knife 80 is disposed on a part of the outer periphery of the rotating body 35a, and is sandwiched by a fixing member 35b. In this state, it is fixed by a fastening bolt 35c. Further, the first slotter head 35 is located on both sides of the slotter knife 80 in the thickness direction, and a conveyance roller 35e is mounted on the outer peripheral portion of the rotating body 35a via a bearing 35d. On the other hand, the receiving roller 39 has a rotating body 39a fixed to the slotter shaft 76, a receiving ring 39b disposed on the outer periphery of the rotating body 39a, and fixed by a fastening bolt 39c.
　この場合、第１スロッタヘッド３５における一対の搬送ローラ３５ｅは、その間にスロッタナイフ８０が配置されており、受ローラ３９における一対の受リング３９ｂは、その間にスロッタナイフ８０が侵入する空間部３９ｄが形成されている。そして、第１スロッタヘッド３５のスロッタナイフ８０が受ローラ３９と対向しているときは、スロッタナイフ８０が空間部３９ｄに侵入し、一対の搬送ローラ３５ｅと一対の受リング３９ｂが段ボールシートＳを挟持して搬送し、この段ボールシートＳに対して溝切り加工を行うことができる。一方、図７に示すように、第１スロッタヘッド３５のスロッタナイフ８０が受ローラ３９と対向しないときは、一対の搬送ローラ３５ｅと一対の受リング３９ｂが段ボールシートＳを挟持して搬送することができる。 In this case, the pair of conveying rollers 35e in the first slotter head 35 is provided with a slotter knife 80 therebetween, and the pair of receiving rings 39b in the receiving roller 39 has a space portion 39d into which the slotter knife 80 enters. Is formed. When the slotter knife 80 of the first slotter head 35 faces the receiving roller 39, the slotter knife 80 enters the space 39d, and the pair of conveying rollers 35e and the pair of receiving rings 39b hold the corrugated cardboard sheet S. The cardboard sheet S can be grooved by being held and conveyed. On the other hand, as shown in FIG. 7, when the slotter knife 80 of the first slotter head 35 does not face the receiving roller 39, the pair of conveying rollers 35 e and the pair of receiving rings 39 b sandwich and convey the cardboard sheet S. Can do.
　このとき、第１スロッタヘッド３５の回転速度と下刃３９の回転速度と異なる速度であっても、搬送ローラ３５ｅは、第１スロッタヘッド３５に対して相対回転自在であることから、搬送ローラ３５ｅと受リング３９ｂが段ボールシートＳを挟持し、下刃３９の回転力により段ボールシートＳを搬送することができる。即ち、搬送ローラ３５ｅは、段ボールシートＳを介して受ローラ３９（受リング３９ｂ）から回転力を受けて連れ回り可能であることから、下刃３９の回転速度（周速）と搬送ローラ３５ｅの回転速度（周速）がほぼ同速となり、この速度が段ボールシートＳの搬送速度となる。 At this time, even if the rotational speed of the first slotter head 35 is different from the rotational speed of the lower blade 39, the transport roller 35e is relatively rotatable with respect to the first slotter head 35. And the receiving ring 39b sandwich the cardboard sheet S, and the cardboard sheet S can be conveyed by the rotational force of the lower blade 39. That is, since the conveyance roller 35e can be rotated by receiving rotational force from the receiving roller 39 (receiving ring 39b) via the corrugated cardboard sheet S, the rotation speed (circumferential speed) of the lower blade 39 and the conveyance roller 35e The rotational speed (peripheral speed) is substantially the same speed, and this speed is the conveying speed of the cardboard sheet S.
　そのため、本実施例では、図２に示すように、制御装置９１は、段ボールシートＳの搬送位置に応じて、第１、第２モータ８５，８６により第１、第２スロッタヘッド３５，３６の回転速度を下刃３９，４０の回転速度より低速に変更する。即ち、制御装置９１は、第１、第２スロッタヘッド３５，３６が段ボールシートＳに溝切り加工を行わない搬送位置にあるとき、第１、第２モータ８５，８６により第１、第２スロッタヘッド３５，３６の回転速度を下刃３９，４０の回転速度より低速に変更する。この場合、制御装置９１は、第１、第２モータ８５，８６により、第１、第２スロッタヘッド３５，３６における段ボールシートＳの搬送位置での回転速度を、第１、第２スロッタヘッド３５，３６における段ボールシートＳの溝切り加工位置での回転速度より低速側に変更することとなる。 Therefore, in the present embodiment, as shown in FIG. 2, the control device 91 uses the first and second motors 85 and 86 to adjust the first and second slotter heads 35 and 36 according to the transport position of the cardboard sheet S. The rotational speed is changed to be lower than the rotational speed of the lower blades 39 and 40. That is, when the first and second slotter heads 35 and 36 are in the conveying position where the corrugated cardboard sheet S is not grooved, the control device 91 uses the first and second motors 85 and 86 to perform the first and second slotters. The rotational speed of the heads 35 and 36 is changed to be lower than the rotational speed of the lower blades 39 and 40. In this case, the control device 91 uses the first and second motors 85 and 86 to change the rotational speed of the first and second slotter heads 35 and 36 at the conveyance position of the cardboard sheet S to the first and second slotter heads 35. , 36, the rotational speed at the grooving position of the corrugated cardboard sheet S is changed to a lower speed side.
　即ち、図８に示すように、各下刃３９，４０の周速（回転速度）、つまり、段ボールシートＳの搬送速度がＶであるとき、第１、第２スロッタヘッド３５，３６の周速（回転速度）Ｖ１を段ボールシートＳの搬送位置に応じて変更する。即ち、図８に実線で示すように、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工するとき、第１、第２スロッタヘッド３５，３６の周速を各下刃３９，４０の周速（段ボールシートＳの搬送速度）Ｖと同じ速度Ｖとし、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工しないときは、第１、第２スロッタヘッド３５，３６の周速を各下刃３９，４０の周速（段ボールシートＳの搬送速度）より低速Ｖ１とする。 That is, as shown in FIG. 8, when the peripheral speed (rotational speed) of each of the lower blades 39, 40, that is, the conveying speed of the cardboard sheet S is V, the peripheral speed of the first and second slotter heads 35, 36 is obtained. (Rotation speed) V1 is changed according to the conveyance position of the cardboard sheet S. That is, as shown by a solid line in FIG. 8, when the first and second slotter heads 35 and 36 process the grooves 331a (332a and 333a) of the cardboard sheet S, the circumferences of the first and second slotter heads 35 and 36 are processed. The speed is set to the same speed V as the peripheral speed (conveying speed of the cardboard sheet S) V of the lower blades 39, 40, and the first and second slotter heads 35, 36 process the grooves 331a (332a, 333a) of the cardboard sheet S. If not, the peripheral speed of the first and second slotter heads 35, 36 is set to a lower speed V1 than the peripheral speed of each of the lower blades 39, 40 (the conveying speed of the cardboard sheet S).
　つまり、図８及び図９に示すように、段ボールシートＳが搬送されて第１スロッタヘッド３５に到達すると、第１スロッタヘッド３５のスロッタナイフ８０が段ボールシートＳに対して溝３３１ａを加工することから、この領域Ａ１にて、第１スロッタヘッド３５の周速を下刃３９の周速（段ボールシートＳの搬送速度）Ｖと同じ速度Ｖとする。そして、図８及び図１０に示すように、第１スロッタヘッド３５による段ボールシートＳの溝３３１ａの加工が完了し、段ボールシートＳの箱深さとなる領域が第１スロッタヘッド３５に到達すると、第１スロッタヘッド３５のスロッタナイフ８０が上方に回転して段ボールシートＳに対して溝切り加工を行わないことから、この領域Ａ２にて、第１スロッタヘッド３５の周速を下刃３９の周速（段ボールシートＳの搬送速度）Ｖより遅い周速とする。この領域Ａ２のうち、前半の領域Ａ２１では、第１スロッタヘッド３５を所定速度まで減速し、後半の領域Ａ２２では、第１スロッタヘッド３５を下刃３９の周速まで加速する。 That is, as shown in FIGS. 8 and 9, when the cardboard sheet S is conveyed and reaches the first slotter head 35, the slotter knife 80 of the first slotter head 35 processes the groove 331 a with respect to the cardboard sheet S. Therefore, in this area A1, the circumferential speed of the first slotter head 35 is set to the same speed V as the circumferential speed (conveying speed of the cardboard sheet S) V of the lower blade 39. Then, as shown in FIGS. 8 and 10, when the processing of the groove 331a of the corrugated cardboard sheet S by the first slotter head 35 is completed and the region of the corrugated cardboard sheet S reaches the first slotter head 35, Since the slotter knife 80 of the 1 slotter head 35 rotates upward and no grooving is performed on the corrugated cardboard sheet S, the peripheral speed of the first slotter head 35 is set to the peripheral speed of the lower blade 39 in this region A2. (Conveying speed of cardboard sheet S) The peripheral speed is slower than V. Of the area A2, in the first half area A21, the first slotter head 35 is decelerated to a predetermined speed, and in the second half area A22, the first slotter head 35 is accelerated to the peripheral speed of the lower blade 39.
　その後、段ボールシートＳが第２スロッタヘッド３６に到達すると、第２スロッタヘッド３６のスロッタナイフ８３が段ボールシートＳの溝３３１ａに入り込んで空振りする。そして、図８及び図１１に示すように、段ボールシートＳの箱深さとなる領域が第２スロッタヘッド３６にも到達すると、この領域Ａ２にて、第２スロッタヘッド３６の周速を下刃４０の周速（段ボールシートＳの搬送速度Ｖ）より遅い周速とする。この領域Ａ２のうち、前半の領域Ａ２１では、第２スロッタヘッド３６を所定速度まで減速し、領域Ａ２２では、第２スロッタヘッド３６を下刃４０の周速まで加速する。 After that, when the corrugated cardboard sheet S reaches the second slotter head 36, the slotter knife 83 of the second slotter head 36 enters the groove 331a of the corrugated cardboard sheet S and swings idle. Then, as shown in FIGS. 8 and 11, when the region of the corrugated cardboard sheet S reaches the second slotter head 36, the peripheral speed of the second slotter head 36 is reduced to the lower blade 40 in this region A2. The peripheral speed is slower than the peripheral speed (conveying speed V of the cardboard sheet S). Of the area A2, in the first half area A21, the second slotter head 36 is decelerated to a predetermined speed, and in the area A22, the second slotter head 36 is accelerated to the peripheral speed of the lower blade 40.
　そして、図８及び図９に示すように、段ボールシートＳの後端が第２スロッタヘッド３６に到達すると、第２スロッタヘッド３６のスロッタナイフ８３が段ボールシートＳに対して溝３３１ｂを加工することから、この領域Ａ３にて、第２スロッタヘッド３６の周速を下刃４０の周速（段ボールシートＳの搬送速度）Ｖと同じ速度Ｖとする。 8 and 9, when the rear end of the cardboard sheet S reaches the second slotter head 36, the slotter knife 83 of the second slotter head 36 processes the groove 331b with respect to the cardboard sheet S. Therefore, in this area A3, the peripheral speed of the second slotter head 36 is set to the same speed V as the peripheral speed of the lower blade 40 (conveying speed of the cardboard sheet S) V.
　なお、ここでは、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工するときの周速を、各下刃３９，４０の周速（段ボールシートＳの搬送速度）とし、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工しないときの周速を各下刃３９，４０の周速（段ボールシートＳの搬送速度）より低速としたが、この制御方法に限定されるものではない。 Here, the peripheral speed when the first and second slotter heads 35 and 36 process the grooves 331a (332a and 333a) of the corrugated cardboard sheet S is the peripheral speed of the lower blades 39 and 40 (the corrugated cardboard sheet S of the corrugated cardboard sheet S). The circumferential speed when the first and second slotter heads 35, 36 do not process the grooves 331a (332a, 333a) of the cardboard sheet S is the circumferential speed of the lower blades 39, 40 (conveyance of the cardboard sheet S). Although the speed is lower than that of the speed, it is not limited to this control method.
　例えば、図８に一点差線（Ｖ２）で示すように、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工する領域Ａ１，Ａ３にて、第１、第２スロッタヘッド３５，３６の周速を各下刃３９，４０の周速（段ボールシートＳの搬送速度）Ｖより所定速度だけ低速Ｖａとし、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工せずに搬送だけする領域Ａ２にて、第１、第２スロッタヘッド３５，３６の周速を各下刃３９，４０の周速（段ボールシートＳの搬送速度）より、更に低速Ｖａ１とする。 For example, as indicated by a one-dotted line (V2) in FIG. 8, the first and second slotter heads 35 and 36 are first in regions A1 and A3 where the grooves 331a (332a and 333a) of the cardboard sheet S are processed. The peripheral speed of the second slotter heads 35, 36 is set to a lower speed Va by a predetermined speed than the peripheral speed (conveying speed of the corrugated cardboard sheet S) V of the lower blades 39, 40, and the first and second slotter heads 35, 36 are corrugated. In the region A2 in which the grooves 331a (332a, 333a) of the sheet S are only conveyed without being processed, the peripheral speed of the first and second slotter heads 35, 36 is set to the peripheral speed of the lower blades 39, 40 (corrugated sheet S). In this case, the lower speed Va1 is set.
　また、図８に二点差線（Ｖ３）で示すように、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工する領域Ａ１，Ａ３にて、第１、第２スロッタヘッド３５，３６の周速を各下刃３９，４０の周速（段ボールシートＳの搬送速度）Ｖより所定速度だけ低速Ｖｂとし、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工せずに搬送だけする領域Ａ２にて、第１、第２スロッタヘッド３５，３６の周速を各下刃３９，４０の周速（段ボールシートＳの搬送速度）より更に低速Ｖｂ１とする。 In addition, as shown by a two-dot chain line (V3) in FIG. 8, the first and second slotter heads 35 and 36 in the regions A1 and A3 where the grooves 331a (332a and 333a) of the corrugated cardboard sheet S are processed. The peripheral speed of the second slotter heads 35, 36 is set to a lower speed Vb by a predetermined speed than the peripheral speed (conveying speed of the corrugated board sheet S) V of the lower blades 39, 40, and the first and second slotter heads 35, 36 are corrugated. In the region A2 in which the grooves 331a (332a, 333a) of the sheet S are only conveyed without being processed, the peripheral speed of the first and second slotter heads 35, 36 is set to the peripheral speed of the lower blades 39, 40 (corrugated sheet S). Vb1 is set at a lower speed than the (conveying speed).
　このように図８に実線で示すような第１、第２スロッタヘッド３５，３６における領域Ａ１，Ａ３と領域Ａ２の各周速の関係だけでなく、この関係に対して図５に一点鎖線または二点差線で示すように、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａを加工する領域Ａ１，Ａ３における周速を低下させる一方、第１、第２スロッタヘッド３５，３６が段ボールシートＳの溝３３１ａを加工せずに搬送だけする領域Ａ２における周速を上昇することで、領域Ａ２１，Ａ２２における第１、第２スロッタヘッド３５，３６の周速の減速度及び加速度を低減し、領域Ａ１，Ａ３と領域Ａ２の周速差を減少することができ、モータ８５，８６の負荷が軽減される。 Thus, not only the relationship between the peripheral speeds of the regions A1 and A3 and the region A2 in the first and second slotter heads 35 and 36 as shown by the solid line in FIG. As shown by the two-dot chain line, the first and second slotter heads 35 and 36 reduce the peripheral speed in the regions A1 and A3 where the grooves 331a of the corrugated cardboard sheet S are processed, while the first and second slotter heads 35 and 36. However, by increasing the peripheral speed in the area A2 where only the conveyance is performed without processing the groove 331a of the cardboard sheet S, the peripheral speed deceleration and acceleration of the first and second slotter heads 35 and 36 in the areas A21 and A22 are increased. The peripheral speed difference between the areas A1, A3 and A2 can be reduced, and the load on the motors 85, 86 is reduced.
　このように実施例１のスロッタ装置にあっては、回転自在に支持されて外周の一部にスロッタナイフ８０，８３が設けられる第１、第２スロッタヘッド３５，３６と、第１、第２スロッタヘッド３５，３６を駆動回転可能な第１、第２モータ８５，８６と、第１、第２スロッタヘッド３５，３６の下方に回転自在に支持されて段ボールシートＳを搬送可能な下刃３９，４０と、下刃３９，４０を駆動回転可能な第３モータ８７と、第１、第２モータ８５，８６により第１、第２スロッタヘッド３５，３６の回転速度を下刃３９，４０の回転速度と異なる速度に制御可能な制御装置９１とを設けている。 As described above, in the slotter device according to the first embodiment, the first and second slotter heads 35 and 36, which are rotatably supported and provided with the slotter knives 80 and 83 on a part of the outer periphery, and the first and second slots. First and second motors 85 and 86 capable of driving and rotating the slotter heads 35 and 36, and a lower blade 39 which is rotatably supported below the first and second slotter heads 35 and 36 and can convey the cardboard sheet S. , 40, a third motor 87 capable of driving and rotating the lower blades 39, 40, and the first and second motors 85, 86 to reduce the rotational speed of the first and second slotter heads 35, 36 of the lower blades 39, 40. A control device 91 that can be controlled at a speed different from the rotational speed is provided.
　従って、第１、第２モータ８５，８６により第１、第２スロッタヘッド３５，３６を駆動回転し、第３モータ８７により下刃３９，４０を回転し、両者の間に段ボールシートＳを挿入することで、この段ボールシートＳを搬送しながら所定の位置に溝切り加工を行うことができる。そして、制御装置９１は、第１、第２モータ８５，８６により第１、第２スロッタヘッド３５，３６の回転速度を下刃３９，４０の回転速度と異なる速度に制御することで、所定の領域で溝切り加工長さや箱深さに応じて第１、第２スロッタヘッド３５，３６の速度が変更されることとなり、段ボールシートＳを搬送しながら所望の形状に容易に加工することが可能となり、装置を大型化することなく多種類の段ボールシートＳシートに応じた加工を行うことができる。 Accordingly, the first and second slotter heads 35 and 36 are driven and rotated by the first and second motors 85 and 86, the lower blades 39 and 40 are rotated by the third motor 87, and the cardboard sheet S is inserted therebetween. As a result, the cardboard sheet S can be grooved at a predetermined position while being conveyed. Then, the control device 91 controls the rotational speed of the first and second slotter heads 35 and 36 to a speed different from the rotational speed of the lower blades 39 and 40 by the first and second motors 85 and 86, thereby The speed of the first and second slotter heads 35 and 36 is changed in accordance with the grooving length and box depth in the region, and the cardboard sheet S can be easily processed into a desired shape while being conveyed. Thus, it is possible to perform processing according to various types of cardboard sheets S sheets without increasing the size of the apparatus.
　また、実施例１のスロッタ装置では、制御装置９１は、段ボールシートＳの搬送位置に応じて、第１、第２スロッタヘッド３５，３６の回転速度を下刃３９，４０の回転速度より低速に変更している。即ち、制御装置９１は、第１、第２スロッタヘッド３５，３６が段ボールシートＳに溝切り加工を行わない搬送領域にあるとき、第１、第２スロッタヘッド３５，３６の回転速度を下刃３９，４０の回転速度より低速に変更している。 In the slotter device according to the first embodiment, the control device 91 makes the rotational speed of the first and second slotter heads 35 and 36 lower than the rotational speed of the lower blades 39 and 40 according to the transport position of the cardboard sheet S. It has changed. That is, when the first and second slotter heads 35 and 36 are in a conveyance area where the corrugated cardboard sheet S is not grooved, the control device 91 reduces the rotational speed of the first and second slotter heads 35 and 36 to the lower blade. The rotational speed is changed from 39 and 40 to a lower speed.
　従って、第１、第２スロッタヘッド３５，３６は、段ボールシートＳに溝切り加工を行わないとき、低速回転することで、第１、第２スロッタヘッド３５，３６の径を拡大することなく、下刃３９，４０による段ボールシートＳの適正な搬送を行うことができる。 Accordingly, the first and second slotter heads 35 and 36 rotate at a low speed when the corrugated cardboard sheet S is not grooved without increasing the diameter of the first and second slotter heads 35 and 36. The corrugated cardboard sheet S can be appropriately conveyed by the lower blades 39 and 40.
　また、実施例１のスロッタ装置では、制御装置９１は、第１、第２スロッタヘッド３５，３６における段ボールシートＳの搬送位置での回転速度を、第２スロッタヘッド３５，３６における段ボールシートＳの溝切り加工位置での回転速度より低速側に変更している。従って、第１、第２スロッタヘッド３５，３６の径やスロッタナイフ８０，８３の周方向長さを拡大することなく、段ボールシートＳの溝切り加工や搬送を適正に行うことができ、装置を簡素化することができる。この場合、第１、第２スロッタヘッド３５，３６を設けて段ボールシートＳにおける前後の溝切り加工を別々に行うことで、第１、第２スロッタヘッド３５，３６における径やスロッタナイフ８０，８３の周方向長さを縮小することが可能となる。 In the slotter device according to the first embodiment, the control device 91 determines the rotational speed of the first and second slotter heads 35 and 36 at the conveyance position of the cardboard sheet S, and determines the rotation speed of the cardboard sheet S in the second slotter heads 35 and 36. The rotational speed at the grooving position is changed to a lower speed side. Therefore, the cardboard sheet S can be appropriately grooved and conveyed without increasing the diameter of the first and second slotter heads 35 and 36 and the circumferential length of the slotter knives 80 and 83, and the apparatus It can be simplified. In this case, the first and second slotter heads 35 and 36 are provided, and the front and rear grooving processes in the corrugated cardboard sheet S are performed separately, so that the diameters and slotter knives 80 and 83 in the first and second slotter heads 35 and 36 are obtained. It is possible to reduce the circumferential length.
　また、実施例１のスロッタ装置では、第１、第２スロッタヘッド３５，３６と下刃３９，４０は、段ボールシートＳを挟持して搬送可能としている。この場合、第１、第２スロッタヘッド３５，３６にスロッタナイフ８０，８３とは相対回転可能な搬送ローラ３５ｅを設けている。従って、第１、第２スロッタヘッド３５，３６の搬送ローラ３５ｅと下刃３９，４０とで段ボールシートＳを挟持して搬送することが可能となり、第１、第２スロッタヘッド３５，３６の周速が下刃３９，４０の周速に対して異なっても、段ボールシートＳを適正で、且つ、高精度に搬送することができる。 Further, in the slotter device of the first embodiment, the first and second slotter heads 35 and 36 and the lower blades 39 and 40 can convey the corrugated cardboard sheet S therebetween. In this case, the first and second slotter heads 35 and 36 are provided with transport rollers 35e that can rotate relative to the slotter knives 80 and 83. Accordingly, the corrugated cardboard sheet S can be held and conveyed by the conveying roller 35e of the first and second slotter heads 35 and 36 and the lower blades 39 and 40, and the circumference of the first and second slotter heads 35 and 36 can be conveyed. Even if the speed is different from the peripheral speed of the lower blades 39, 40, the corrugated cardboard sheet S can be conveyed appropriately and with high accuracy.
　そして、この搬送ローラ３５ｅは、段ボールシートＳを介して下刃３９，４０と連れ回り可能であることから、別途、駆動装置などを不要として装置を簡素化することができると共に、省エネ効果を奏することができる。 And since this conveyance roller 35e can be rotated with the lower blades 39 and 40 via the corrugated cardboard sheet S, it is possible to simplify the apparatus by eliminating the need for a driving device or the like, and to provide an energy saving effect. be able to.
　また、実施例１のスロッタ装置では、上スロッタヘッド３５が装着されたスロッタ軸７５に軸受３４ａによりスリッタヘッド３４を相対回転自在に支持し、このスリッタヘッド３４を下刃３９と同期して回転可能としている。従って、スリッタヘッド３４は、上スロッタヘッド３５の回転速度の影響を受けずに、下刃３９から段ボールシートＳを介して回転力を受けて同期回転することから、上スロッタヘッド３５の回転速度が変更されても、段ボールシートＳを適正に切断することができる。 In the slotter device according to the first embodiment, the slitter head 34 is supported by the bearing 34a on the slotter shaft 75 to which the upper slotter head 35 is mounted so as to be relatively rotatable. The slitter head 34 can be rotated in synchronization with the lower blade 39. It is said. Accordingly, the slitter head 34 is synchronously rotated by receiving the rotational force from the lower blade 39 via the corrugated cardboard sheet S without being affected by the rotational speed of the upper slotter head 35, so that the rotational speed of the upper slotter head 35 is reduced. Even if it is changed, the corrugated cardboard sheet S can be appropriately cut.
　また、実施例１のスロッタ装置では、第１、第２スロッタヘッド３５，３６は、スロッタナイフ８０，８３の径方向に対向してカウンタウエイト８１，８４を設けている。従って、スロッタナイフ８０，８３とカウンタウエイト８１，８４が径方向に対向していることで、第１、第２スロッタヘッド３５，３６の回転時に、重量バランスが安定することとなり、段ボールシートＳの溝切り加工精度を向上することができる。 In the slotter device according to the first embodiment, the first and second slotter heads 35 and 36 are provided with counterweights 81 and 84 facing the radial direction of the slotter knives 80 and 83, respectively. Therefore, when the slotter knives 80 and 83 and the counterweights 81 and 84 are opposed to each other in the radial direction, the weight balance is stabilized when the first and second slotter heads 35 and 36 are rotated. Grooving accuracy can be improved.
　また、実施例１のシートの溝切り加工方法にあっては、第１、第２スロッタヘッド３５，３６と下刃３９，４０を回転すると共に、その間に段ボールシートＳを通過させることで、第１、第２スロッタヘッド３５，３６により段ボールシートＳに溝切り加工を行うことができ、第１、第２スロッタヘッド３５，３６が段ボールシートＳに溝切り加工を行わずに搬送だけする領域で、第１、第２スロッタヘッド３５，３６を低速回転している。従って、溝切り加工長さなどに拘わらず、段ボールシートＳを搬送しながら所望の形状に容易に加工することが可能となり、別途搬送ローラなどを設ける必要はなく、また、第１、第２スロッタヘッド３５，３６の径を拡大することなく、段ボールシートＳの溝切り加工や搬送を行うことができる。 In the sheet grooving method according to the first embodiment, the first and second slotter heads 35 and 36 and the lower blades 39 and 40 are rotated, and the corrugated sheet S is passed between them. In the region where the cardboard sheet S can be grooved by the first and second slotter heads 35 and 36, and the first and second slotter heads 35 and 36 only convey the cardboard sheet S without grooving. The first and second slotter heads 35 and 36 are rotated at a low speed. Accordingly, it is possible to easily process the cardboard sheet S into a desired shape while conveying the cardboard sheet S regardless of the grooving length, etc., and it is not necessary to provide a separate conveying roller, and the first and second slotters. The cardboard sheet S can be grooved and conveyed without increasing the diameter of the heads 35 and 36.
　また、実施例１の製函機にあっては、給紙部１１と印刷部２１と排紙部３１とダイカット部４１とフォルディング部５１とカウンタエゼクタ部６１とを設け、排紙部３１として、スロッタナイフ８０，８３が設けられる第１、第２スロッタヘッド３５，３６と、段ボールシートＳを搬送可能な下刃３９，４０と、第１、第２スロッタヘッド３５，３６の回転速度を下刃３９，４０の回転速度と異なる速度に制御可能な制御装置９１を設けている。 In the box making machine according to the first embodiment, the paper feeding unit 11, the printing unit 21, the paper discharge unit 31, the die cut unit 41, the folding unit 51, and the counter ejector unit 61 are provided. The first and second slotter heads 35 and 36 provided with the slotter knives 80 and 83, the lower blades 39 and 40 capable of transporting the cardboard sheet S, and the first and second slotter heads 35 and 36 are rotated at a lower speed. A control device 91 that can be controlled at a speed different from the rotational speed of the blades 39 and 40 is provided.
　従って、給紙部１１からの段ボールシートＳに対して、印刷部２１で印刷が行われ、排紙部３１で罫線加工と溝切り加工が行われ、ダイカット部４１で穴開け加工が行われ、フォルディング部５１で折り畳んで端部が接合されて段ボール箱Ｂが形成され、カウンタエゼクタ部６１で段ボール箱Ｂが計数されながら積み上げる。このとき、排紙部３１で溝切り加工が行われるとき、第１、第２スロッタヘッド３５，３６の回転速度を高速または低速に変更することで、段ボールシートＳを搬送しながら所望の形状に容易に加工することが可能となり、装置を大型化することなく多種類の段ボール箱を製造することができる。 Accordingly, the cardboard sheet S from the paper supply unit 11 is printed by the printing unit 21, the ruled line processing and the grooving processing are performed by the paper discharge unit 31, and the punching processing is performed by the die cut unit 41. The folding part 51 is folded and the ends are joined to form a cardboard box B, and the cardboard box B is counted while being counted by the counter ejector part 61. At this time, when grooving is performed in the paper discharge unit 31, the rotational speed of the first and second slotter heads 35 and 36 is changed to a high speed or a low speed, so that the cardboard sheet S is conveyed to a desired shape. Processing can be easily performed, and various types of cardboard boxes can be manufactured without increasing the size of the apparatus.
　なお、この実施例１では、第１スロッタヘッド３５に軸受３５ｄを介して搬送ローラ３５ｅを相対回転自在に設け、段ボールシートＳを介して受ローラ３９から回転力を受けて連れ回り可能としたが、この構成に限定されるものではない。例えば、第３モータにより下刃３９が駆動回転可能であることから、搬送ローラ３５ｅが下刃３９と同期して駆動回転することができるように、図示しないギヤにより駆動連結してもよい。また、別途、搬送ローラ３５ｅを駆動回転可能な第４モータ（搬送ローラ用駆動装置）を設け、この第４モータにより搬送ローラ３５ｅを下刃３９と同期して駆動回転するようにしてもよい。 In the first embodiment, the conveyance roller 35e is provided in the first slotter head 35 via the bearing 35d so as to be relatively rotatable, and can be rotated by receiving rotational force from the receiving roller 39 via the cardboard sheet S. However, the present invention is not limited to this configuration. For example, since the lower blade 39 can be driven and rotated by the third motor, the conveying roller 35e may be driven and connected by a gear (not shown) so as to be driven and rotated in synchronization with the lower blade 39. In addition, a fourth motor (conveying roller driving device) that can drive and rotate the conveying roller 35e may be provided separately, and the conveying roller 35e may be driven and rotated in synchronization with the lower blade 39 by this fourth motor.
　この場合、搬送ローラ３５ｅを下刃３９と同期して駆動回転可能に連結することで、別途、駆動装置などを不要として装置を簡素化することができると共に、省エネ効果を奏することができ、また、搬送ローラ３５ｅと段ボールシートＳとの間のスリップを防止してこの段ボールシートＳを適正に搬送することができる。また、搬送ローラを駆動回転可能な第４モータを設け、制御装置９７により第４モータを駆動制御し、搬送ローラ３５ｅを下刃３９と同期して駆動回転可能とすることで、搬送ローラ３５ｅと段ボールシートＳとの間のスリップを防止してこの段ボールシートＳを適正に搬送することができる。 In this case, by connecting the transport roller 35e so as to be capable of driving and rotating in synchronization with the lower blade 39, it is possible to simplify the apparatus by eliminating the need for a separate driving device and to achieve an energy saving effect. Further, it is possible to prevent the slip between the conveying roller 35e and the corrugated cardboard sheet S and convey the corrugated cardboard sheet S properly. Further, a fourth motor capable of driving and rotating the conveyance roller is provided, and the fourth motor is driven and controlled by the control device 97, and the conveyance roller 35e can be driven and rotated in synchronization with the lower blade 39. The cardboard sheet S can be properly conveyed while preventing slipping between the cardboard sheet S and the cardboard sheet S.
　図１６は、本発明の実施例２に係るスロッタ装置を表す概略構成図、図１７は、段ボールシートに対するスロッタ回転速度を表す概略図である。なお、上述した実施例と同様の機能を有する部材には、同一の符号を付して詳細な説明は省略する。 FIG. 16 is a schematic configuration diagram showing the slotter device according to the second embodiment of the present invention, and FIG. 17 is a schematic diagram showing the slotter rotation speed with respect to the cardboard sheet. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.
　実施例２において、図１６に示すように、排紙部１０１は、段ボールシートＳに対して、罫線加工を施すと共に溝切り加工を施すものである。この排紙部１０１は、第１罫線ロール３２と受ロール３７、第２罫線ロール３３と受ロール３８、スリッタヘッド１０２及び第１スロッタヘッド（上スロッタヘッド）１０３と下刃（下スロッタヘッド）１０４から構成されている。 In Example 2, as shown in FIG. 16, the paper discharge unit 101 performs a ruled line process and a grooving process on the corrugated cardboard sheet S. The paper discharge unit 101 includes a first ruled line roll 32 and a receiving roll 37, a second ruled line roll 33 and a receiving roll 38, a slitter head 102, a first slotter head (upper slotter head) 103, and a lower blade (lower slotter head) 104. It is composed of
　上下一対のスロッタ軸１０５，１０６は、各端部が図示しないフレームに回転自在に支持されており、上スロッタ軸１０５に１個のスリッタヘッド１０２と４個のスロッタヘッド１０３が軸方向に所定間隔をあけて固定され、下スロッタ軸１０６に５個の下刃１０４が軸方向に所定間隔をあけて固定されている。そして、１個のスリッタヘッド１０２は、外周部にスリッタナイフ（切刃）１０７が固定され、４個のスロッタヘッド１０３は、それぞれ外周部にスロッタナイフ（切刃）１０８が固定されると共に、カウンタウエイト１０９が固定されている。この場合、スリッタヘッド１０２のスリッタナイフ１０７は、全周に設けられ、各スロッタヘッド１０３のスロッタナイフ１０８は、周方向の一部に設けられている。また、スロッタナイフ１０８とカウンタウエイト１０９は、ほぼ同様の重量であって、径方向に対向した位置に固定されている。 A pair of upper and lower slotter shafts 105 and 106 are rotatably supported at their respective ends by a frame (not shown), and one slitter head 102 and four slotter heads 103 are arranged on the upper slotter shaft 105 at predetermined intervals in the axial direction. The five lower blades 104 are fixed to the lower slotter shaft 106 at predetermined intervals in the axial direction. One slitter head 102 has a slitter knife (cutting blade) 107 fixed to the outer peripheral portion, and each of the four slotter heads 103 has a slotter knife (cutting blade) 108 fixed to the outer peripheral portion, and a counter. A weight 109 is fixed. In this case, the slitter knife 107 of the slitter head 102 is provided all around, and the slotter knife 108 of each slotter head 103 is provided in a part of the circumferential direction. Further, the slotter knife 108 and the counterweight 109 have substantially the same weight and are fixed at positions opposed in the radial direction.
　従って、スリッタヘッド１０２及びスロッタヘッド１０３と下刃１０４とは上下に対向して配置され、段ボールシートＳがこのスリッタヘッド１０２及びスロッタヘッド１０３と下刃１０４の間に侵入すると、スリッタヘッド１０２により段ボールシートＳの端部が切断されスロッタヘッド１０３により段ボールシートＳが溝切り加工される。 Accordingly, the slitter head 102 and the slotter head 103 and the lower blade 104 are disposed so as to face each other vertically. When the cardboard sheet S enters between the slitter head 102 and the slotter head 103 and the lower blade 104, the slitter head 102 causes the cardboard The end portion of the sheet S is cut and the cardboard sheet S is grooved by the slotter head 103.
　そして、スロッタ軸１０５は、第１モータ（上駆動装置）１１１が駆動連結され、この第１モータ１１１によりスリッタヘッド１０２及びスロッタヘッド１０３を駆動回転することができる。また、ロール軸７１，７２，７３，７４及びスロッタ軸１０６は、第３モータ（下駆動装置）１１２が駆動連結され、この第３モータ１１２により罫線ロール３２，３３と受ロール３７，３８と下刃１０４を同期して駆動回転することができる。 The slotter shaft 105 is drivingly connected to a first motor (upper drive device) 111, and the first motor 111 can drive and rotate the slitter head 102 and the slotter head 103. The roll shafts 71, 72, 73, 74 and the slotter shaft 106 are connected to a third motor (lower drive device) 112, and the third motor 112 lowers the ruled line rolls 32, 33 and the receiving rolls 37, 38. The blade 104 can be driven and rotated in synchronization.
　各モータ１１１，１１２は、モータドライバ１１３，１１４が接続され、このモータドライバ１１３，１１４は、制御装置１１５に接続されている。また、第１モータ１１１は、その回転位置を検出するロータリエンコーダ１１６が装着され、検出結果が制御装置１１５に入力される。更に、スロッタヘッド１０３の回転位置を検出するロータリエンコーダ１１７が装着され、検出結果が制御装置１１５に入力される。また、段ボールシートＳの位置を検出する位置センサ９６が設けられており、検出結果が制御装置１１５に入力される。また、制御装置１１５は、操作装置１１８が接続されており、操作装置１１８からの操作信号に基づいて各モータ１１１，１１２を制御可能となっている。 The motor drivers 113 and 114 are connected to the motors 111 and 112, and the motor drivers 113 and 114 are connected to the control device 115. The first motor 111 is equipped with a rotary encoder 116 that detects its rotational position, and the detection result is input to the control device 115. Further, a rotary encoder 117 that detects the rotational position of the slotter head 103 is mounted, and the detection result is input to the control device 115. A position sensor 96 for detecting the position of the cardboard sheet S is provided, and the detection result is input to the control device 115. The control device 115 is connected to an operation device 118 and can control the motors 111 and 112 based on an operation signal from the operation device 118.
　そして、制御装置１１５は、ロータリエンコーダ１１６が検出した第１モータ１１１の回転位置、ロータリエンコーダ１１７が検出したスロッタヘッド１０３の回転位置、位置センサ９６が検出した段ボールシートＳの搬送位置に基づいて第１モータ１１１を制御する。即ち、制御装置１１５は、段ボールシートＳの搬送位置に対してスロッタヘッド１０３の回転位置が適正位置となるように、つまり、スロッタナイフ１０８が段ボールシートＳの適正位置（溝３３１ａ，３３２ａ，３３３ａ，３３１ｂ，３３２ｂ，３３３ｂ）を加工することができるように、第１モータ１１１の回転速度を制御する。この場合、制御装置１１５は、第１モータ１１１の回転位置によりフィードバック制御を行っている。 Then, the control device 115 determines the first position based on the rotational position of the first motor 111 detected by the rotary encoder 116, the rotational position of the slotter head 103 detected by the rotary encoder 117, and the conveyance position of the cardboard sheet S detected by the position sensor 96. One motor 111 is controlled. That is, the control device 115 makes the rotation position of the slotter head 103 an appropriate position with respect to the conveyance position of the corrugated cardboard sheet S, that is, the slotter knife 108 is moved to an appropriate position ( grooves 331a, 332a, 333a, 331b, 332b, 333b) can be processed so that the rotational speed of the first motor 111 is controlled. In this case, the control device 115 performs feedback control based on the rotational position of the first motor 111.
　そして、本実施例にて、制御装置１１５は、スロッタヘッド１０３の回転速度を下刃１０４の回転速度と異なる速度に制御する。この場合、下刃１０４の回転速度とは、段ボールシートＳの搬送速度である。具体的に、制御装置１１５は、段ボールシートＳの搬送位置に応じて、第１モータ１１１によりスロッタヘッド１０３の回転速度を下刃１０４の回転速度より高速または低速に変更する。即ち、制御装置１１５は、スロッタヘッド１０３が段ボールシートＳに溝切り加工を行う加工位置にあるとき、第１モータ１１１によりスロッタヘッド１０３の回転速度を下刃１０４の回転速度より高速に変更する。また、スロッタヘッド１０３が段ボールシートＳに溝切り加工を行わない搬送位置にあるとき、第１モータ１１１によりスロッタヘッド１０３の回転速度を下刃１０４の回転速度より低速に変更する。 In this embodiment, the control device 115 controls the rotation speed of the slotter head 103 to a speed different from the rotation speed of the lower blade 104. In this case, the rotation speed of the lower blade 104 is the conveyance speed of the cardboard sheet S. Specifically, the control device 115 changes the rotation speed of the slotter head 103 to be higher or lower than the rotation speed of the lower blade 104 by the first motor 111 according to the conveyance position of the cardboard sheet S. That is, the control device 115 changes the rotation speed of the slotter head 103 to be higher than the rotation speed of the lower blade 104 by the first motor 111 when the slotter head 103 is at a processing position where the cardboard sheet S is grooved. In addition, when the slotter head 103 is at a conveyance position where the cardboard sheet S is not grooved, the rotation speed of the slotter head 103 is changed to be lower than the rotation speed of the lower blade 104 by the first motor 111.
　この場合、制御装置１１５は、第１モータ１１１により、スロッタヘッド１０３における段ボールシートＳの搬送位置での回転速度を、スロッタヘッド１０３における段ボールシートＳの溝切り加工位置での回転速度より低速側に変更する。即ち、下刃１０４による段ボールシートＳの搬送速度に対して、スロッタヘッド１０３が段ボールシートＳの溝切り加工を行うときは高速側に変更し、スロッタヘッド１０３が段ボールシートＳの溝切り加工を行わずに搬送するときは低速側に変更する。 In this case, the control device 115 causes the rotation speed of the slotter head 103 at the conveyance position of the cardboard sheet S to be lower than the rotation speed of the slotter head 103 at the grooving position of the cardboard sheet S by the first motor 111. change. That is, when the slotter head 103 performs grooving of the cardboard sheet S with respect to the conveying speed of the cardboard sheet S by the lower blade 104, the slotter head 103 performs grooving of the cardboard sheet S. When transporting without changing, change to the low speed side.
　即ち、図１７に示すように、下刃１０４の周速（回転速度）、つまり、段ボールシートＳの搬送速度がＶであるとき、スロッタヘッド１０３の周速（回転速度）Ｖ１１を段ボールシートＳの搬送位置に応じて変更する。即ち、スロッタヘッド１０３が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工する（領域Ａ１，Ａ３）とき、スロッタヘッド１０３の周速を下刃１０４の周速（段ボールシートＳの搬送速度）Ｖより高速とし、スロッタヘッド１０３が段ボールシートＳの溝３３１ａ（３３２ａ，３３３ａ）を加工せずに搬送だけする（領域Ａ２）ときは、スロッタヘッド１０３の周速を下刃１０４の周速（段ボールシートＳの搬送速度）より低速とする。 That is, as shown in FIG. 17, when the peripheral speed (rotational speed) of the lower blade 104, that is, the conveying speed of the cardboard sheet S is V, the peripheral speed (rotational speed) V11 of the slotter head 103 is set to Change according to the transport position. That is, when the slotter head 103 processes the grooves 331a (332a, 333a) of the corrugated cardboard sheet S (regions A1, A3), the peripheral speed of the slotter head 103 is set to the peripheral speed of the lower blade 104 (conveying speed of the corrugated cardboard sheet S) V. When the slotter head 103 is transported without processing the grooves 331a (332a, 333a) of the corrugated cardboard sheet S (region A2), the slotter head 103 is set to have a peripheral speed of the lower blade 104 (corrugated cardboard sheet). S transport speed).
　この場合、この領域Ａ１，Ａ３のうち、前半の領域Ａ１１，Ａ３１では、スロッタヘッド１０３を所定速度まで加速し、後半の領域Ａ１２，Ａ３２では、スロッタヘッド１０３を下刃１０４の周速まで減速する。また、この領域Ａ２のうち、前半の領域Ａ２１では、スロッタヘッド１０３を所定速度まで減速し、後半の領域Ａ２２では、スロッタヘッド１０３を下刃１０４の周速まで加速する。 In this case, among the areas A1 and A3, the slotter head 103 is accelerated to a predetermined speed in the first half areas A11 and A31, and the slotter head 103 is decelerated to the peripheral speed of the lower blade 104 in the second half areas A12 and A32. . In the first half area A21 of the area A2, the slotter head 103 is decelerated to a predetermined speed, and in the second half area A22, the slotter head 103 is accelerated to the peripheral speed of the lower blade 104.
　このように実施例２のスロッタ装置にあっては、回転自在に支持されて外周の一部にスロッタナイフ１０８が設けられるスロッタヘッド１０３と、スロッタヘッド１０３を駆動回転可能な第１モータ１１１と、スロッタヘッド１０３の下方に回転自在に支持されて段ボールシートＳを搬送可能な下刃１０４と、下刃１０４を駆動回転可能な第２モータ１１２と、第１モータ１１１によりスロッタヘッド１０３の回転速度を下刃１０４の回転速度と異なる速度に制御可能な制御装置１１５とを設けている。 As described above, in the slotter device according to the second embodiment, the slotter head 103 that is rotatably supported and has the slotter knife 108 provided on a part of the outer periphery thereof, the first motor 111 that can drive and rotate the slotter head 103, and A lower blade 104 that is rotatably supported below the slotter head 103 and can transport the corrugated cardboard sheet S, a second motor 112 that can drive and rotate the lower blade 104, and a first motor 111 that controls the rotation speed of the slotter head 103. A control device 115 that can be controlled at a speed different from the rotational speed of the lower blade 104 is provided.
　従って、所定の領域で溝切り加工長さや箱深さに応じてスロッタヘッド１０３が高速回転または低速回転することとなり、段ボールシートＳを搬送しながら所望の形状に容易に加工することが可能となり、別途搬送ローラなどを設ける必要はなく、段ボールシートＳシートに応じた加工を行うことができる。 Therefore, the slotter head 103 rotates at a high speed or a low speed according to the grooving length or box depth in a predetermined region, and can be easily processed into a desired shape while conveying the cardboard sheet S. There is no need to provide a separate conveying roller or the like, and processing according to the cardboard sheet S sheet can be performed.
　また、実施例２のスロッタ装置では、制御装置１１５は、段ボールシートＳの搬送位置に応じて、第１モータ１１１によりスロッタヘッド１０３の回転速度を下刃１０４の回転速度より高速または低速に変更している。即ち、制御装置１１５は、スロッタヘッド１０３が段ボールシートＳに溝切り加工を行う加工領域にあるとき、スロッタヘッド１０３の回転速度を下刃１０４の回転速度より高速に変更し、スロッタヘッド１０３が段ボールシートＳに溝切り加工を行わない搬送領域にあるとき、スロッタヘッド１０３の回転速度を下刃１０４の回転速度より低速に変更している。 In the slotter device according to the second embodiment, the control device 115 changes the rotation speed of the slotter head 103 to be higher or lower than the rotation speed of the lower blade 104 by the first motor 111 according to the conveyance position of the cardboard sheet S. ing. That is, the control device 115 changes the rotation speed of the slotter head 103 to be higher than the rotation speed of the lower blade 104 when the slotter head 103 is in a machining area where the cardboard sheet S is grooved. When the sheet S is in a conveyance area where grooving is not performed, the rotation speed of the slotter head 103 is changed to be lower than the rotation speed of the lower blade 104.
　従って、スロッタヘッド１０３は、段ボールシートＳに溝切り加工を行うときには低速回転し、段ボールシートＳに溝切り加工を行わないときに低速回転することで、溝切り加工長さや箱深さに拘わらず、スロッタヘッド１０３の径やスロッタナイフ１０８の周方向長さを拡大することなく、段ボールシートＳを適正に搬送しながら、所望の形状に容易に加工することができる。 Therefore, the slotter head 103 rotates at a low speed when grooving the corrugated cardboard sheet S, and rotates at a low speed when the corrugated cardboard sheet S is not grooved, regardless of the grooving length or the box depth. The cardboard sheet S can be easily processed into a desired shape while appropriately transporting the cardboard sheet S without increasing the diameter of the slotter head 103 and the circumferential length of the slotter knife 108.
　なお、上述した実施例１では、２つのスロッタヘッド３５，３６と２つの下刃３９，４０を設け、スロッタヘッド３５，３６が段ボールシートＳに溝切り加工を行う加工領域にあるときはその周速を下刃３９，４０の周速（段ボールシートＳの搬送速度）とし、スロッタヘッド３５，３６が段ボールシートＳに溝切り加工を行わない搬送領域にあるときはその周速を下刃３９，４０の周速（段ボールシートＳの搬送速度）より低速としたが、この方法に限定されるものではない。即ち、実施例２のように、スロッタヘッド３５，３６が段ボールシートＳに溝切り加工を行う加工領域にあるときはその周速を下刃１０４の周速（段ボールシートＳの搬送速度）より高速としてもよい。 In the first embodiment described above, the two slotter heads 35 and 36 and the two lower blades 39 and 40 are provided, and when the slotter heads 35 and 36 are in the processing region where the corrugated cardboard sheet S is grooved, the periphery thereof is arranged. When the speed is the peripheral speed of the lower blades 39 and 40 (the conveyance speed of the corrugated cardboard sheet S), and the slotter heads 35 and 36 are in the conveyance area where the corrugated cardboard sheet S is not grooved, the peripheral speed is Although the speed is lower than the peripheral speed of 40 (the conveying speed of the cardboard sheet S), the present invention is not limited to this method. That is, as in the second embodiment, when the slotter heads 35 and 36 are in the processing region where the cardboard sheet S is grooved, the peripheral speed is higher than the peripheral speed of the lower blade 104 (the conveyance speed of the cardboard sheet S). It is good.
　また、上述した各実施例では、製函機を、給紙部１１、印刷部２１、排紙部３１、ダイカット部４１、フォルディング部５１と、カウンタエゼクタ部６１により構成したが、段ボールシートＳに手穴３４１，３４２が不要な場合には、ダイカット部４１をなくして構成してもよい。 Further, in each of the above-described embodiments, the box making machine is configured by the paper feeding unit 11, the printing unit 21, the paper discharge unit 31, the die cutting unit 41, the folding unit 51, and the counter ejector unit 61. If the hand holes 341 and 342 are unnecessary, the die cut portion 41 may be omitted.
　１１　給紙部
　２１　印刷部
　３１　排紙部
　３４　スリッタヘッド
　３５　第１スロッタヘッド（上スロッタヘッド）
　３６　第２スロッタヘッド（上スロッタヘッド）
　３９，４０　下刃（下スロッタヘッド）
　４１　ダイカット部
　５１　フォルディング部
　６１　カウンタエゼクタ部
　７９　スリッタナイフ（切刃）
　８０，８３　スロッタナイフ（切刃）
　８１，８４　カウンタウエイト
　８５　第１モータ（上駆動装置）
　８６　第２モータ（上駆動装置）
　８７　第３モータ（下駆動装置）
　９１　制御装置
　１０１　排紙部
　１０２　スリッタヘッド
　１０３　スロッタヘッド（上スロッタヘッド）
　１０４　下刃（下スロッタヘッド）
　１０７　スリッタナイフ（切刃）
　１０８　スロッタナイフ（切刃）
　１０９　カウンタウエイト
　１１１　第１モータ（上駆動装置）
　１１２　第２モータ（下駆動装置）
　１１５　制御装置
　Ｂ　段ボール箱（箱体）
　Ｓ　段ボールシート（シート）
　Ｄ　搬送方向 DESCRIPTION OF SYMBOLS 11 Paper feed part 21 Printing part 31 Paper discharge part 34 Slitter head 35 1st slotter head (upper slotter head)
36 Second slotter head (upper slotter head)
39, 40 Lower blade (lower slotter head)
41 Die-cut part 51 Folding part 61 Counter ejector part 79 Slitter knife (cutting blade)
80,83 Slotter knife (cutting blade)
81, 84 Counterweight 85 First motor (upper drive)
86 Second motor (upper drive)
87 Third motor (lower drive)
91 Control device 101 Paper discharge unit 102 Slitter head 103 Slotter head (upper slotter head)
104 Lower blade (lower slotter head)
107 Slitter knife (cutting blade)
108 Slotter knife (cutting blade)
109 Counterweight 111 First motor (upper drive device)
112 Second motor (lower drive unit)
115 Controller B Cardboard box (box)
S Cardboard sheet (sheet)
D Transport direction

Claims (14)

  1. 　回転自在に支持されて外周の一部に切刃が設けられる上スロッタヘッドと、
    　前記上スロッタヘッドを駆動回転可能な上駆動装置と、
    　前記上スロッタヘッドの下方に回転自在に支持されてシートを搬送可能な下刃と、
    　前記下刃を駆動回転可能な下駆動装置と、
    　前記上駆動装置により前記上スロッタヘッドの回転速度を前記下刃の回転速度と異なる速度に制御可能な制御装置と、
    　を備えることを特徴とするスロッタ装置。     An upper slotter head that is rotatably supported and has a cutting edge on a part of the outer periphery;
    An upper drive device capable of driving and rotating the upper slotter head;
    A lower blade that is rotatably supported below the upper slotter head and can convey a sheet;
    A lower driving device capable of driving and rotating the lower blade;
    A control device capable of controlling the rotational speed of the upper slotter head to a speed different from the rotational speed of the lower blade by the upper drive device;
    A slotter device comprising:
  2. 　前記下刃は、前記上スロッタヘッドに対向して配置される下スロッタヘッドであり、前記下駆動装置により駆動回転可能であることを特徴とする請求項１に記載のスロッタ装置。 2. The slotter device according to claim 1, wherein the lower blade is a lower slotter head disposed to face the upper slotter head, and can be driven and rotated by the lower driving device.
  3. 　前記制御装置は、前記シートの搬送位置に応じて、前記上駆動装置により前記上スロッタヘッドの回転速度を前記下刃の回転速度より高速または低速に変更することを特徴とする請求項１または２に記載のスロッタ装置。 3. The control device according to claim 1, wherein the upper drive device changes the rotational speed of the upper slotter head to a higher speed or a lower speed than the rotational speed of the lower blade in accordance with a transport position of the sheet. A slotter device according to claim 1.
  4. 　前記制御装置は、前記上スロッタヘッドが前記シートに溝切り加工を行わない搬送位置にあるとき、前記上駆動装置により前記上スロッタヘッドの回転速度を前記下刃の回転速度より低速に変更することを特徴とする請求項３に記載のスロッタ装置。 The control device changes the rotational speed of the upper slotter head to be lower than the rotational speed of the lower blade by the upper driving device when the upper slotter head is at a conveyance position where the sheet is not grooved. The slotter device according to claim 3.
  5. 　前記制御装置は、前記上駆動装置により、前記上スロッタヘッドにおける前記シートの搬送位置での回転速度を、前記上スロッタヘッドにおける前記シートの溝切り加工位置での回転速度より、低速側に変更することを特徴とする請求項１から４のいずれか一つに記載のスロッタ装置。 The control device uses the upper drive device to change the rotation speed of the upper slotter head at the sheet conveyance position to a lower speed than the rotation speed of the upper slotter head at the sheet grooving position. The slotter device according to any one of claims 1 to 4, wherein the slotter device is provided.
  6. 　前記上スロッタヘッドと前記下刃は、前記シートを挟持して搬送可能であることを特徴とする請求項１から５のいずれか一つに記載のスロッタ装置。 The slotter device according to any one of claims 1 to 5, wherein the upper slotter head and the lower blade can convey the sheet while sandwiching the sheet.
  7. 　前記上スロッタヘッドは、前記下刃との間で前記シートを挟持すると共に、前記切刃とは相対回転自在な搬送ローラが設けられることを特徴とする請求項６に記載のスロッタ装置。 The slotter device according to claim 6, wherein the upper slotter head is provided with a conveyance roller that sandwiches the sheet with the lower blade and is rotatable relative to the cutting blade.
  8. 　前記搬送ローラは、前記シートを介して前記下刃と連れ回り可能であることを特徴とする請求項７に記載のスロッタ装置。 The slotter device according to claim 7, wherein the conveying roller is able to rotate with the lower blade via the sheet.
  9. 　前記搬送ローラは、前記下刃と同期して駆動回転可能に連結されることを特徴とする請求項７に記載のスロッタ装置。 The slotter device according to claim 7, wherein the transport roller is coupled so as to be driven to rotate in synchronization with the lower blade.
  10. 　前記搬送ローラを駆動回転可能な搬送ローラ用駆動装置が設けられ、前記制御装置は、前記搬送ローラ用駆動装置により前記搬送ローラを前記下刃と同期して駆動回転可能であることを特徴とする請求項７に記載のスロッタ装置。 A transport roller driving device capable of driving and rotating the transport roller is provided, and the control device is capable of driving and rotating the transport roller in synchronization with the lower blade by the transport roller driving device. The slotter device according to claim 7.
  11. 　前記上スロッタヘッドと同心上に相対回転自在に支持されて全周に切刃が設けられるスリッタヘッドと、前記スリッタヘッドの下方に回転自在に支持されてシートを搬送可能なスリッタヘッド用下刃とが設けられ、前記スリッタヘッドは、前記スリッタヘッド用下刃と同期して回転可能であることを特徴とする請求項１から１０のいずれか一つに記載のスロッタ装置。 A slitter head supported concentrically with the upper slotter head so as to be relatively rotatable and provided with a cutting edge on the entire circumference; a lower blade for a slitter head which is supported rotatably under the slitter head and can convey a sheet; 11. The slotter device according to claim 1, wherein the slitter head is rotatable in synchronization with the slitter head lower blade.
  12. 　前記上スロッタヘッドは、前記切刃の径方向に対向してカウンタウエイトが設けられることを特徴とする請求項１から１１のいずれか一つに記載のスロッタ装置。 The slotter device according to any one of claims 1 to 11, wherein the upper slotter head is provided with a counterweight so as to face the radial direction of the cutting blade.
  13. 　外周の一部に切刃を有する上スロッタヘッドと下刃とを回転すると共に、前記上スロッタヘッドと前記下刃との間にシートを通過させることで、前記上スロッタヘッドにより前記シートに溝切り加工を行うシートの溝切り加工方法において、前記上スロッタヘッドが前記シートに溝切り加工を行わない位置で、前記上スロッタヘッドを前記下刃より低速回転することを特徴とするシートの溝切り加工方法。 The upper slotter head having a cutting edge on a part of the outer periphery and the lower blade are rotated, and the sheet is passed between the upper slotter head and the lower blade, so that the upper slotter head cuts a groove in the sheet. In the sheet grooving method for processing, the sheet grooving is characterized in that the upper slotter head is rotated at a lower speed than the lower blade at a position where the upper slotter head does not perform grooving on the sheet. Method.
  14. 　シートを供給する給紙部と、
    　前記シートに対して印刷を行う印刷部と、
    　前記シートに対して表面に罫線加工を行うと共に溝切り加工を行う排紙部と、
    　前記シートを折り畳んで端部を接合することで箱体を形成するフォルディング部と、
    　前記箱体を計数しながら積み上げた後に所定数ごとに排出するカウンタエゼクタ部と、
    　を備え、
    　前記排紙部は、
    　回転自在に支持されて外周の一部に切刃が設けられる上スロッタヘッドと、
    　前記上スロッタヘッドを駆動回転可能な上駆動装置と、
    　前記上スロッタヘッドの下方に回転自在に支持されてシートを搬送可能な下刃と、
    　前記下刃を駆動回転可能な下駆動装置と、
    　前記上駆動装置により前記上スロッタヘッドの回転速度を前記下刃の回転速度と異なる速度に制御可能な制御装置と、
    　を有することを特徴とする製函機。     A sheet feeding unit for supplying sheets;
    A printing unit for printing on the sheet;
    A paper discharge unit that performs ruled line processing and grooving on the surface of the sheet;
    Folding part that forms a box by folding the sheet and joining the ends,
    A counter ejector portion that discharges every predetermined number after the boxes are stacked while counting,
    With
    The paper discharge unit
    An upper slotter head that is rotatably supported and has a cutting edge on a part of the outer periphery;
    An upper drive device capable of driving and rotating the upper slotter head;
    A lower blade that is rotatably supported below the upper slotter head and can convey a sheet;
    A lower driving device capable of driving and rotating the lower blade;
    A control device capable of controlling the rotational speed of the upper slotter head to a speed different from the rotational speed of the lower blade by the upper drive device;
    A box making machine characterized by comprising:
PCT/JP2013/052736 2012-02-20 2013-02-06 Slotter, sheet grooving method, and carton former WO2013125349A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-034510 2012-02-20
JP2012034510A JP2013169687A (en) 2012-02-20 2012-02-20 Slotter device, method of grooving sheet and carton former

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CN112672865A (en) * 2018-09-14 2021-04-16 三菱重工机械系统株式会社 Slotting device and box making machine

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JP6228942B2 (en) * 2015-01-14 2017-11-08 三菱重工印刷紙工機械株式会社 Slotter head, slotter device, box making machine
JP6529778B2 (en) * 2015-02-17 2019-06-12 三菱重工機械システム株式会社 Slotter device and sheet grooving method, box making machine
JP7565581B2 (en) 2020-09-25 2024-10-11 株式会社Isowa Corrugated cardboard sheet box making machine

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CN112672865B (en) * 2018-09-14 2022-09-27 三菱重工机械系统株式会社 Slotting device and box making machine

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