JP2006297637A - Carton making apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the shaping precision of a carton by bending a blank in the state closely fitted to a mandrel. <P>SOLUTION: This carton making apparatus comprises a square pillar-shaped mandrel (1), which is driven to advance and retreat in its axial direction between an advance position (P1) and a retracted position (P2), and a plurality of movable formers (61) and (61), which are arranged at a position surrounding the outer periphery of the mandrel (1) present at the advance position (P1) and reciprocate between the finish shaping position (A) near the mandrel (1) positioned at the advance position (P1) and the half-shaping position (B) away from the advance position (P1). The blank (96) protruding to the outside from the shaping space (T) surrounded by a plurality of the movable formers (61) and (61) positioned at the half-shaping position (B) is pushed in the shaping space (T) by the leading end (1a) of the mandrel (1) and the movable formers (61) and (61) are subsequently moved to the finish shaping position (A) to press the blank (96) to the mandrel (1). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a box making apparatus, and more particularly to a box making apparatus for making a carton by folding a blank such as corrugated paper or cardboard in a developed state along a mandrel.

FIG. 9 is a schematic view of the main part of a conventional box making apparatus in which a corrugated cardboard blank (96) is bent along a prismatic mandrel (1). This box making apparatus is shown in FIG. It has a function of forming a carton by folding a blank (96) having the shape shown.
As shown in FIG. 10, the blank (96) includes a rectangular bottom plate (90), front and rear plates (91) and (92) connected to the long side thereof, and these bottom plate (90) and front and rear plates (91 ) (92) are provided with side plates (93), (94) and (95) which are connected to the respective short sides.
As shown in FIG. 9, the box making apparatus for bending the blank (96) includes a rectangular block-shaped mandrel (1) and front and rear arc-shaped fixings for bending the front and rear plates (91) and (92) of the blank (96). Former (81) (82) and side plates (93), (93), (94), and (94) of blank (96) are provided with fixed side formers (83) and (84). The front and rear formers (81) and (82) and the side formers (83) and (84) are fixed to the apparatus body with bolts or the like (not shown), and the side formers (83) and (84) are Two sets (four in total) are arranged at intervals in the front-rear direction with respect to nine sheets of paper. Also, below each former, a bonding apparatus for overlapping and bonding the remaining side plates (95) (95) to the outer surfaces of the bent side plates (93) (93) (94) (94) (85) and a product conveying conveyor (86) therebelow is provided.

In this case, when the blank (96) in the initial position (T0) shown in FIG. 9 is pushed down by the mandrel (1) and lowered into the forming space (T1), the front and rear plates (91) (92) of the blank (96) Is bent by the front and rear formers (81) (82), and the side plates (93) (93) (94) (94) are bent by the side formers (83) (83) (84) (84). The front and rear plates (91) and (92) and the side plates (93) and (94) are in a state along the side wall of the mandrel (1). When the mandrel (1) further descends and reaches the bonding device (85), the remaining side plates (95) (95) are placed on the outer surfaces of the bent side plates (93) (93) (94) (94). It is bent and bonded by the bonding device (85) so as to overlap. As a result, the formed upwardly opened carton (50) is conveyed to the next process by the product conveying conveyor (86).
JP-A-5-177744

However, in the above conventional one, as shown in FIG. 11, a blank (96) is provided between the blank (96) passing through the molding space (T1) and each former (81) (82). It is necessary to provide a clearance (K) that allows the movement of. Therefore, the molded carton (50) has a problem that a dimensional error corresponding to the size of the clearance (K) is generated, and the molding accuracy is deteriorated.
The present invention has been made in view of such points, and it is possible to bend the blank (96) to the mandrel (1) in a close-fitted state, thereby improving the molding accuracy of the carton. To do.

[Invention of Claim 1]
The technical means of the invention according to claim 1 for solving the above-mentioned problem is as follows:
`` A prismatic mandrel (1) that is driven back and forth in the axial direction between the advance position (P1) and the reverse position (P2),
Finished molding position (A) arranged at a position surrounding the outer periphery of the mandrel (1) at the advanced position (P1) and close to the mandrel (1) at the advanced position (P1); A plurality of movable formers reciprocating between the separated half forming positions (B),
A blank (96) projecting outward from the molding space (T) surrounded by each movable former at the semi-molding position (B) is pushed into the molding space (T) at the tip (1a) of the mandrel (1). Thereafter, the blank (96) is pressed against the mandrel (1) by moving the movable formers to the finish forming position (A).
The technical means operates as follows.
Each movable former in the semi-forming position (B) is separated from the finish forming position (A) (the position where the blank (96) is pressed against the mandrel (1)) outward (in the direction away from the mandrel (1)). It is in.
Therefore, the blank (96) that projects outward from the molding space (T) surrounded by each movable former in the semi-molding position (B) is inserted into the molding space (T) at the tip (1a) of the mandrel (1). When pushed in, the blank (96) is smoothly pushed into the molding space (T) and bent into a shape substantially along the outer periphery of the mandrel (1) by each movable former.
Next, when each movable former is moved to the finish forming position (A), the blank (96) is pressed and brought into close contact with the outer peripheral surface of the mandrel (1) by each movable former. Accordingly, the molding accuracy of the carton (9) is improved as compared with the conventional one in which a dimensional error corresponding to the clearance (K) allowing the movement of the blank (96) occurs in the carton (9).

[Invention of Claim 2]
In the invention according to claim 1,
`` Each movable former is provided at a position facing each plane of the outer periphery of the mandrel (1) at the advance position (P1),
Each of the movable formers sequentially operates in the arrangement direction along the outer periphery of the mandrel (1) when moving to the finishing molding position (A).
In this case, each movable former when moving to the finish forming position (A) sequentially operates in the arrangement direction along the outer periphery of the mandrel (1). Accordingly, the blank (96) is sequentially bent in the outer peripheral direction of the mandrel (1). Therefore, unlike the case where the movable formers are simultaneously moved to the finish forming position (A), there is no fear that wrinkles are formed in the central area of the blank (96), and a beautiful carton is finished.

[Invention of Claim 3]
In the invention according to claim 2,
`` After moving the movable former corresponding to the central area of the blank (96) to the finishing molding position (A), the movable formers arranged on both sides thereof are sequentially moved to the finishing molding position (A) in the arrangement direction. It can be 'moved'.
In this case, when each movable former is moved to the finish forming position (A), the movable former is operated according to the arrangement sequence arranged on both sides from the central area of the blank (96). Therefore, compared with the invention according to claim 2, wrinkles are less likely to occur in the central portion of the blank (96).

The present invention has the following specific effects.
In the invention according to claim 1, as described above, the blank (96) is pressed against and closely contacts the outer surface of the mandrel (1) by each movable former. Accordingly, the molding accuracy of the carton (9) is improved as compared with the conventional one in which a dimensional error corresponding to the clearance (K) allowing the movement of the blank (96) occurs in the carton (9).
In the invention according to claim 2, each movable former when moving to the finish forming position (A) sequentially operates in the arrangement direction along the outer periphery of the mandrel (1). Therefore, in addition to the effect of the invention according to claim 1, there is no fear that wrinkles are formed in the central region of the blank (96) as described above, and there is an effect that a beautiful carton is finished.
In the invention according to claim 3, as described above, the wrinkles are less likely to occur in the central portion of the blank (96).

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
[Composition of carton (50)]
First, prior to the description of the box making apparatus according to the embodiment of the present invention, the configuration of a carton (50) that is a molding target will be described.
As shown in FIG. 8 (C), the outer shape of the carton (50) to be molded is an approximately eight-column shape in which the four ridges on the peripheral side of the rectangular parallelepiped are chamfered, as shown in FIG. 8 (a). The main blank (52) and two sub blanks (51) (51) connected to both sides of the main blank (52). Each sub-blank (51) (51) has the same structure.

《Main Blank (52)》
The main blank (52) is formed by punching corrugated paper and is provided with a substantially octagonal bottom plate (522), and a pair of opposing sides has bonding margins (522a) (522a). It is connected continuously. A rectangular front plate (521) (521) is connected to the other pair of opposite sides of the bottom plate (522), and a long and narrow rectangular shape is formed on a pair of opposite side portions of each front plate (521). Corner face plates (523) and (523) are continuously provided. Further, a sticking allowance (523a) is continuously provided at the tip of each corner face plate (523).

《Sub blank (51)》
Each sub-blank (51) is formed by punching corrugated paper, and a substantially octagonal cover plate (517) obtained by cutting off each rectangular corner portion, and a substantially rectangular side plate continuously provided on one side thereof (511), corner face plates (512) (512) and bonding allowances (513) (513) are arranged in this order on a pair of opposing side portions of the side plate (511). Yes. One short side (short side on the cover plate (517) side) of each sticking allowance (513) is continuously provided with a reinforcing plate (514) that is folded back to the sticking allowance (513). ing. Also, the other short side of the adhesive allowance (513) and the side plate (511) are provided with adhesive allowances (515) and (515) which are bonded to the bottom plate (522) of the main blank (52). ing.

[Overall configuration of box making equipment]
As shown in FIGS. 1 to 3, the box making apparatus according to the present embodiment includes a first molding station (S1) that folds two sub-blanks (51) and a second molding that folds a main blank (52). Station (S2) → Turntable (2) for circulating the mandrel (1) in the order of the discharge station (S3) for discharging the carton (50) after molding, and the sub blank (51 ) (51) for supplying a sub-blank supply device (3) (3), a first forming device (6) for bending the supplied sub-blank (51) (51) along the mandrel (1), A main blank supply device (4) for supplying a main blank (52) to the second molding station (S2), and a second molding device (a second bending device for bending the supplied main blank (52) so as to be along the mandrel (1)). 7) and the molded carton (50) taken out at the discharge station (S3) to the downstream side. An unloading device (80) is provided. Details of each part will be described below.

[Mandrel (1), Turntable (2)]
The mandrel (1) has a shape that can be tightly inserted into the carton (50) in the state of (C) of FIG. 8, and as shown in FIG. It is formed in a substantially octagonal prism shape with chamfered ridge lines. Thereby, on the outer periphery of the mandrel (1), the chamfered portions (10) and (10) and the blank suction surfaces (11) and (12) located between them are formed, and the blank suction surface (11) ( In 12), suction tools (110) and (120) for suction-holding each sub-blank (51) and main blank (52) by vacuum are arranged. The bottom wall of the mandrel (1) is provided with a suction tool (suction tool (110)) (not shown) for sucking and holding the sticking allowance (515) connected to the side plate (511) of the sub blank (51). (Similar to (120), a vacuum holding device) is provided.
On the upper surface of the mandrel (1), an elevating shaft (13) that slidably passes through the arm portion (20) of the turntable (2) formed in a cross shape is continuously provided. 13) is configured to be moved up and down by a lever (15) that is swung up and down by a drive source (14). When the lever (15) is driven by the drive source (14), as shown in FIG. 4, the mandrel (1) reciprocates between the upper retracted position (P2) and the lower advanced position (P1). Moving.
The center shaft (21) penetrating in the center of the turntable (2) is rotated by a drive motor (22).

[Sub-blank feeder (3)]
The sub blank supply devices (3) and (3) for supplying the sub blanks (51) and (51) to the first molding station (S1) have the same structure.
Each sub-blank supply device (3) includes a blank take-out head (32) for sucking and holding the uppermost sub-blank (51) stacked on the blank stock section (30), and a blank take-out head (32). A first supply conveyor (31) for receiving the suction-held sub blank (51) is provided, and the sub blank (51) on the first supply conveyor (31) is conveyed to the first molding station (S1). It has become so.

[First forming device (6)]
The first molding station (S1) is provided with a first molding device (6) for bending the sub-blanks (51) (51) along the outer surface of the mandrel (1). The device (6) is positioned lower than the sub-blank supply devices (3) and (3).
As shown in FIG. 5, the first forming device (6) includes a movable former (61) (62) (63) disposed at a position surrounding the outer periphery of the mandrel (1) at the advanced position (P1). These movable formers (61), (62) and (63) are opposed to the respective planes on the outer periphery of the substantially octagonal mandrel (1). The movable formers (61), (62), and (63) are driven forward and backward by the cylinders (R) and (R). Specifically, the movable formers (61), (62) and (63) driven by the cylinders (R) and (R) are moved to a finishing forming position (Q1) (sub blank (51) close to the mandrel (1). (A position where (51) is pressed) and a semi-molding position (Q2) (a position where a slight gap is formed between the sub-blanks (51) and (51)) separated from this position.
A receiver plate (64) that clamps the sub-blanks (51) (51) in cooperation with the mandrel (1) is disposed below the first molding device (6). (64) is driven up and down by a cylinder (not shown).

[Main blank feeder (4)]
As shown in FIGS. 1 and 2, the main blank supply device (4) for supplying the main blank (52) to the second forming station (S2) is the uppermost main blank laminated on the blank stock section (40). A blank take-out head (42) for sucking and holding (52), and a second supply conveyor (41) for receiving the main blank (52) sucked and held by the blank take-out head (42), The main blank (52) on the second supply conveyor (41) passes through the arrangement part of the cold glue applicator (43) and the arrangement part of the hot melt applicator (44) to the second molding station (S2). It is designed to be transported. The cold glue applicator (43) is a natural dry water-soluble solution on the surface of the main blank (52) (523a) (523b) and the surface of the adhesive margin (522a) (the hatched area in FIG. 1). The hot-melt applicator (44) is displaced from the application area of the water-soluble bond in the surface of the adhesive allowance (523a) (523b) or the adhesive allowance (522a). The hot-melt resin is applied in a straight line at the position.

[Second molding equipment (7)]
The second molding station (S2) has a second molding device (7) for bending the main blank (52) along the outer surface of the mandrel (1) and sticking it to the sub-blank (51) (51). While being provided, the second molding device (7) is positioned lower than the main blank supply device (4).
The second molding device (7) has the same configuration as the first molding device (6) described above. That is, as shown in FIG. 6, the movable formers (71), (72), and (73) are provided at positions that surround the outer periphery of the mandrel (1) at the advanced position (P1). The formers (71), (72), and (73) face each plane on the outer periphery of the substantially octagonal columnar mandrel (1). The movable formers (71), (72) and (73) are driven forward and backward by cylinders (R ′) and (R ′). Specifically, the movable formers (71), (72) and (73) driven by the cylinders (R ′) and (R ′) are finished forming positions (Q3) (main blank ( 52) and a semi-molding position (Q4) (a position where a slight gap is formed between the main blank (52)) separated from the half molding position.
A receiver plate (74) that clamps the main blank (52) in cooperation with the mandrel (1) is disposed below the second molding device (7). The receiver plate (74) Is driven up and down by a cylinder (not shown).

[Unloader (80)]
As shown in FIG. 2, the discharge station (S3) has an extraction plate (87) equipped with suction tools (870) and (870) for vacuuming and taking out the carton (50) from the mandrel (1). In addition, a clamping plate (88) (88) that clamps the carton (50) from the side is disposed above it. The clamping plates 88 and 88 are reciprocally driven by a cylinder (not shown) in a direction in which they are in contact with and away from each other. Further, a carry-out device (80) for conveying the completed carton (50) downstream is provided in the vicinity of the sandwiching plates (88) and (88).
In the present embodiment, the sub-blank (51) and the main blank (52) correspond to the blank (96) which is the above-mentioned invention specific matter.

[Description of operation]
Next, the operation of the box making apparatus will be described.
As shown in FIG. 1, the sub blanks (51) and (51) stacked on the uppermost layer of the blank stock section (30) and (30) are sucked and held by the blank take-out heads (32) and (32), and are fed to the first supply conveyor. (31) When taken out on (31), the sub blanks (51) (51) are conveyed to the first forming station (S1) by the first supply conveyors (31) (31). During this conveyance, the reinforcing plates (514), (514) (see FIG. 8) of the sub-blanks (51), (51) are appropriately folded in an overlapping state with respect to the adhesive allowances (513), (513). It is.
As shown in FIG. 4 (a), the sticking allowances (515) and (515) of the tips of the sub blanks (51) and (51) conveyed to the first molding station (S1) are the tips of the mandrel (1). (1a) and the receiver plate (64) are sandwiched from above and below. And in this clamping state, when the mandrel (1) and the receiver plate (64) are integrally lowered to the lower advance position (P1), the side plate of the sub blank (51) (51) (511) (511), corner face plates (512) (512), etc. are movable formers (61) (61) (62) (62) ... in the semi-molding position (Q2) shown in FIGS. Then, it is folded along the mandrel (1) (see FIG. 4B) and moved into the molding space (T1). During this movement, the movable formers (61), (61), etc. are in the semi-molding position (Q2) away from the mandrel (1). That is, like the movable formers 61 and 61 illustrated in FIGS. 4A and 4B, the distance between these movable formers 61 and 61 is the width dimension (L) of the mandrel 1. And it is slightly larger than the dimension of the sub blanks (51) and (51) plus two sheet thicknesses. Accordingly, the mandrel (1) smoothly enters the molding space (T1) while bending the sub-blanks (51) (51). Thereafter, the movable former (61) (61) (62) (62) is moved from the semi-molding position (Q2) to the finish molding position (Q1). Specifically, as shown in FIG. 5, first, the movable former (61) (61) is moved from the semi-molding position (Q2) (imaginary line position) to the finish molding position (Q1) (solid line position). After that, the movable formers (62) and (62) and the movable formers (63) and (63) sequentially arranged on the sides thereof are moved to the finishing forming position (Q1) in this order. Then, as shown by the solid line in FIG. 4C and FIG. 5, the sub blanks (51) and (51) are pressed against the outer surface of the mandrel (1) by the movable formers (61) and (61). The side plate (511), the corner face plate (512), etc. of each sub blank (51) are in close contact with the mandrel (1). Accordingly, the molding accuracy of the carton (9) is improved as compared with the conventional fixed former type in which the dimensional error corresponding to the clearance (K) allowing the movement of the blank (96) occurs in the carton (9).

  Next, the sub blanks (51), (51) (mandrels (1) are formed by the suction tools (110), (120) provided on the outer wall of the mandrel (1) and the suction tools (not shown) provided on the bottom wall. ) Is bent along (). That is, the negative pressure of the vacuum device (not shown) is applied to the suction tool (110) (120) and the like, thereby sucking and holding the sub blank (51) (51) with the suction tool (110) (120). To do. Each adsorber (110) adsorbs the central portion (side plate (511) portion) of the sub-blank (51), while each adsorber (120) adsorbs both bent ends of the sub-blank (51). An adsorbing tool (not shown) provided on the bottom wall of the mandrel (1) adsorbs the adhering allowance (515) provided continuously to the side plate (511) of the sub blank (51). After that, after moving the movable former (61) (62) ... to the semi-molding position (Q2), the mandrel (1) is raised to the retracted position (P2), and then the turntable (2) is moved to 90 °. By rotating, the mandrel (1) holding the sub-blanks (51) (51) by suction is moved to the second molding station (S2).

  In this state, the main blank (52) has already been conveyed by the main blank supply device (4) below the mandrel (1) that has reached the second molding station (S2). Therefore, when the mandrel (1) that has reached the second molding station (S2) is lowered from the retracted position (P2) to the advanced position (P1), the first molding device (6 The second molding apparatus (7) is operated in the same manner as in (2), whereby the main blank (52) is folded in such a manner that the main blank (52) overlaps the outside of the sub-blanks (51) (51) attracted and held by the mandrel (1).

  That is, as shown in FIGS. 6 and 7, in the second molding station (S2), the main blank (4) is placed under the mandrel (1) holding the sub blanks (51) and (51) by the main blank (4). 52) is in the fed state, so that the bottom plate (522) of the main blank (52) corresponds to the tip (1a) of the mandrel (1) (the state of (a) in FIG. 7). ing. In this state, the receiver plate (74) rises, and thereby the bottom plate (522) of the main blank (52) is sandwiched between the receiver plate (74) and the tip (1a) of the mandrel (1). Then, in this clamping state, when the mandrel (1) and the receiver plate (74) are integrally lowered to the lower advance position (P1), the front plate (521) of the main blank (52) is being lowered. (521), corner face plates (523) (523), etc. are movable formers (71), (71), (72), (72), etc. in the semi-molding position (Q4) shown in FIGS. 1) It is folded along (holds and holds the sub-blanks (51) and (51)) (see (b) of FIG. 7) and moves into the molding space (T2). During this movement, the movable formers (71), (71), etc. are in the semi-molding position (Q4) away from the mandrel (1). In other words, it is movable between the mandrel (1) holding the sub blank (51) (51) and the movable former (71) (71) etc. to the position where the plate blank of the main blank (52) can enter the loose. Former (71) (71) etc. are retreating. Accordingly, the mandrel (1) smoothly enters the molding space (T2) while bending the main blank (52). Thereafter, the movable formers (71) (71) (72) (72) are moved from the semi-molding position (Q4) to the finish molding position (Q3). Specifically, as shown in FIG. 6, first, the movable former (73) (73) is moved from the semi-generated position (Q4) (imaginary line position) to the finish forming position (Q3) (solid line position). After that, the movable formers (72) and (72) and the movable formers (71) and (71) sequentially arranged on the sides are operated in this order. Then, as shown by the solid line in FIG. 7C and FIG. 6, the main blank 52 is pressed toward the mandrel 1 by the movable formers 71, 72, 73, thereby the main blank. The front plate (521), the corner plate (523), etc. of (52) are in close contact with the outer surfaces of the mandrel (1) and the sub blanks (51) (51) held by suction. Accordingly, the molding accuracy of the carton (9) is improved as compared with the conventional fixed former type in which the dimensional error corresponding to the clearance (K) allowing the movement of the blank (96) occurs in the carton (9).

  When the main blank (52) is pressed toward the mandrel (1) by the receiver plate (74) or the movable former (71) (72) (73), it is applied by the hot melt applicator (44) described above. The hot-melt resin is not yet cooled and cured and is in a molten state. Therefore, when the main blank (52) is pressed toward the mandrel (1) by the receiver plate (74) and the movable former (71) (72) (73), the pasting allowance (522a) (523a) etc. (51) It is welded to the corresponding part (overlapping part (98)) of (51). Thus, the sub-blank (51) (51) and the main blank (52) are adhered by the hot-melt resin until the water-soluble bond applied to the adhesive allowance (522a) (523a) is naturally dried. Maintained in a state. As a result, the completed carton (50) is fitted on the mandrel (1).

Next, after moving the movable former (71) (72) ... to the semi-molding position (Q4), the mandrel (1) holding the carton (50) with the suction tool (110) (120) is held. When the turntable (2) is intermittently rotated in units of 90 ° after being raised to the retracted position (P2), the mandrel (1) holding the carton (50) by suction reaches the discharge station (S3).
Thereafter, after lowering the mandrel (1), the carton (50) externally fitted to the mandrel (1) is clamped by the clamping plates (88) (88), and the bottom of the carton (50) is taken out from the plate ( (87), while adsorbing the carton (50) by the adsorbers (110) (120) of the mandrel (1) is released and the mandrel (1) is moved to the retracted position (P2 ). Thereby, the carton (50) can be removed from the mandrel (1), and the removed carton (50) is conveyed downstream by the unloading device (80).

  In the above embodiment, the main blank (52) is stuck to the sub blank (51) (51) while the hot melt resin applied by the hot melt applicator (44) is not cooled and cured. . On the other hand, when the work time from applying the hot melt resin to sticking the main blank (52) to the sub blank (51) (51) is long, the hot melt resin is cooled and cured. I am worried. Therefore, in such a case, a heater is embedded in the receiver plate (74) and the movable formers (71), (72), and (73), thereby melting the hot-melt resin and performing the sticking.

  When the mandrel (1) is lifted after the body of the carton (50) is clamped by the clamping plates (88) (88) at the discharge station (S3), the suction tool (110) (120) is attached to the mandrel (1). A mechanism for retracting and storing in the inside may be provided. In this way, when the mandrel (1) is raised at the discharge station (S3), the tip of the adsorber (110) (120) and the carton (50) do not slide frictionally, so the adsorber (110) (120) Can prevent wear.

  In the above embodiment, the two sub-blanks (51) (51) are attached to the main blank (52), but the sub-blanks (51) (51) are integrated into one shape. The carton (50) may be formed using a single sub-blank and the main blank (52). Further, the carton (50) may be formed by using a blank composed entirely of one sheet.

Furthermore, in the above embodiment, the sub blank (51) is transported to the first molding station (S1) by the first supply conveyor (31). However, the blank stock section (30) and the first molding station (S1) are used. The sub-blank (51) may be transported to the first molding station (S1) by a transport suction head that circulates in the vicinity of. That is, the lower surface of the sub blank (51) is sucked and held by the transport suction head, and the sub blank (51) taken out from the blank stock section (30) is transferred from the blank take-out head (32) to the transport suction head. (The lower surface of the sub blank (51) is sucked and held) and is conveyed to the first molding station (S1).
Similarly, a conveyance suction head that sucks and holds the lower surface of the main blank (52) taken out from the blank stock section (40) is provided, and the main blank (52) is sucked from the blank take-out head (42). You may make it the structure which receives with a head and conveys this to a 2nd shaping | molding station (S2).

FIG. 3 is an external perspective view of a part of the box making apparatus according to the embodiment of the present invention. FIG. 3 is an external perspective view of a part of the box making apparatus according to the embodiment of the present invention. Schematic plan view of a box making apparatus according to an embodiment of the present invention Operational explanation of movable former (61) etc. Operational explanation of movable former (61) etc. Operational explanation of movable former (71) etc. Operational explanation of movable former (71) etc. Carton (50) configuration diagram Illustration of conventional example Illustration of conventional example Illustration of conventional example

Explanation of symbols

(1) ・ ・ ・ Mandrel
(1a) ・ ・ ・ tip
(61) (62) (63) (71) (72) (73)
(51) ... Sub blank
(52) ・ ・ ・ Main blank
(96) ・ ・ ・ Blank
(P1) ・ ・ ・ Advance position
(P2) ・ ・ ・ Backward position
(A) (Q1) (Q3) ... Finish molding position
(B) (Q2) (Q4) ・ ・ ・ Semi-molding position

Claims (3)

A prismatic mandrel (1) that is driven back and forth in the axial direction between the advance position (P1) and the reverse position (P2);
Finished molding position (A) arranged at a position surrounding the outer periphery of the mandrel (1) at the advanced position (P1) and close to the mandrel (1) at the advanced position (P1); A plurality of movable formers reciprocating between the separated half forming positions (B),
A blank (96) projecting outward from the molding space (T) surrounded by each movable former at the semi-molding position (B) is pushed into the molding space (T) at the tip (1a) of the mandrel (1). After that, the box making apparatus that presses the blank (96) against the mandrel (1) by moving the movable formers to the finish forming position (A). In the box making apparatus according to claim 1,
Each movable former is provided at a position facing each plane of the outer periphery of the mandrel (1) at the advance position (P1),
The box making apparatus, wherein the movable formers sequentially operate in the arrangement direction along the outer periphery of the mandrel (1) when moving to the finishing molding position (A). In the box making apparatus according to claim 2,
After moving the movable former corresponding to the central area of the blank (96) to the finishing molding position (A), the movable formers arranged on both sides thereof are sequentially moved to the finishing molding position (A) in the arrangement direction. Let the box making equipment.

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