JPH07285509A - Packaging machine for article - Google Patents

Abstract

PURPOSE:To efficiently package an article, and at the same time, realize the energy saving and cost reduction of a packaging work by providing a core unit which opens a packaging material which is fed from a packaging material- feeding unit, article-inputting unit which inputs an article into the opened packaging material, packaging material-sealing unit, and packaging material-switching unit. CONSTITUTION:A packaging material X which is led out from a roll-form packaging material 5 being mounted on a raw material loading part 10 is opened by the operation of a core unit 50 which is arranged in a device main body 3. Then, the opened end of the packaging material X is gripped and lifted by a packaging material-guiding member 101 which is engaged with a screw shaft and vertically movably arranged, and is guided to a batch shutter part 140. Then, when the packaging material X of a length for one bag portion or longer is pulled out, an article is input in the packaging material X through the batch shutter part 140. Then, the rear end and leading end of the packaging material X are sealed by the operations of a bottom sealing unit 70 and top sealing unit 120 which are arranged in the core unit 50 side. Then, the packaging material X is cut by a cutter 73 at the lower end part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article wrapping machine used for wrapping articles, and more particularly, it is used for applying an exterior to articles such as a plurality of articles being put together. And a suitable packaging machine for articles.

[0002]

2. Description of the Related Art Various articles are often packaged according to their purpose and use. The packaging of such articles is classified into, for example, an interior which is mainly kept until the end consumer uses the article to be handled, an exterior which is provided mainly for protection during transportation and storage and for convenience of handling. As is well known, a typical example of an article requiring both the interior and exterior is a squeezer offered to a customer at a restaurant or the like.

[0003] In addition to those used once and then discarded, there are those which are washed and disinfected and used repeatedly. And the latter type of squeezer is usually packaged one by one at the stage of presenting it to the customer, but when it is washed and disinfected after being used and is transported to a restaurant again, it is individually wrapped. For example, the wrapped diaphragm is 2
They are packaged (exterior) in a bundle such as 0 pieces, 50 pieces, and so on. Therefore, in most cases, the packaging for making the individual squeezes together is performed by a human hand.

[0004]

However, if the human hands are used to wrap a plurality of squeezers as in the prior art, it is easily estimated that
The work efficiency is extremely poor and the economical efficiency is significantly reduced. Therefore, in recent years, as a packaging material for packaging, a roll-shaped packaging material obtained by sealing a hollow portion of a tubular packaging material into a band shape and further winding this into a roll shape is used. Automation of a series of operations, such as discharging and supplying while opening, 2) inserting a plurality of diaphragms inside the packaging material, 3) closing the opening end of the packaging material, is being realized.
In some cases, each of the above steps 1) to 3) is actually provided individually to form a continuous processing line for packaging work.

However, when such a continuous processing line is constructed, the machine becomes large in size, and a new inconvenience such as the need to secure a large space in the factory occurs, while in the step 1) above. When the packaging material is supplied, the packaging material may be twisted or wrinkled, and the continuous processing line is often interrupted.Therefore, there is concern that an appropriate device or machine may be devised. There is. Therefore, at present, a packaging machine for articles that properly meets such requirements is not provided.

The present invention can solve the above problems, and an object of the present invention is to efficiently pack an article and to realize labor saving and cost reduction of the packaging work. To provide a packaging machine.

[0007]

[Means for Solving the Problems] Among the packaging machines for articles according to the present invention, the one described in claim 1 is one in which a tubular packaging material made of a thin and flexible material is continuously provided in an apparatus main body. A packaging material supply unit that supplies the packaging material passage, a core portion that is arranged in the packaging material passage and opens the packaging material supplied from the packaging material supply unit, and one of the packaging material from the core portion. An article loading section which is disposed in the apparatus main body at a position separated by at least the length of a bag and receives the article fed from the article feeding section and throws the article into the packaging material opened by the core section. A packaging material guide portion that is movably disposed between the core portion and the article insertion portion and guides an open end of the packaging material that has passed through the core portion to the article insertion portion; Located in the moving range of the core portion side and the article insertion portion side, the front end and the rear end of the packaging material for the one bag. A packaging material sealing part which is sandwiched and sealed, and a packaging material which is arranged between the packaging material sealing part on the core part side and the core part and cuts the packaging material into a length of one bag. And a cutting portion.

According to a second aspect of the present invention, in the first aspect of the present invention, the core portion is a pair separated from the core portion toward the packaging material guiding portion in the feeding direction of the packaging material. Forming at least two sets on one side and the other side of the roller arranged in the width direction of the packaging material.
The first roller located on the upstream side in the feed direction and on the one side and the second roller located on the downstream side in the feed direction and on the other side are the first rotation extending in the width direction. On the one hand in sliding contact with the body, the third roller located on the upstream side in the feed direction and on the other side and the fourth roller located on the downstream side in the feed direction and on the one side are in the width direction. It extends and is in sliding contact with a second rotary body located on the opposite side of the first rotary body with the pair of rollers sandwiched therebetween, and further located downstream of the pair of rollers in the feeding direction of the packaging material. It is characterized in that an interrupting member that cuts into the hollow portion is provided.

According to a third aspect of the present invention, according to the first or second aspect, the open ends of the packaging material guided by the packaging material guiding portion are pulled from inside to directions different from each other and sealed. The packaging material sealing portion is provided in the packaging material guiding portion.

[0010]

According to the article packaging machine of the present invention, the packaging material is normally crushed at the time when the packaging material is supplied from the packaging material supply section into the main body of the apparatus. It is in a broken state. Thereafter, the packaging material is opened through the packaging material passage to the core portion. At this time, the packaging material guiding portion is moved to the core portion side, and the opening end of the packaging material is changed from this state. Is gripped, hooked, or the like and moved to the article loading unit. When the movement of the packaging material guide section to the article input section side is completed,
The end portion of the packaging material on the core portion side is fixed and sealed by the packaging material sealing portion arranged on the core portion side, and after this sealing is completed, the article is inserted into the packaging material. Is supplied. here,
The packaging material is cut by the packaging material cutting unit on the downstream side in the feeding direction of the packaging material from the core portion side end portion after the core portion side end portion is sealed. It may be before or after supplying the article. Then, when the supply of the article into the packaging material is completed, the end portion of the packaging material on the side of the article loading portion is fixed and sealed by the packaging material sealing portion arranged on the side of the article loading portion. Packaging is complete.

According to the second aspect of the present invention, the packaging material supplied from the packaging material supply section has its hollow portion crushed up to the interruption member, and the hollow portions are sequentially squeezed as it passes through the interruption member. It will be opened. The opened packaging material then has the inner surface of the packaging material in contact with the outer circumference of the roller (that is, the packaging material encloses the roller), and the outer surface in contact with the first and second rotating bodies, while the packaging material guiding portion side Will be sent to. On this occasion,
On the first rotating body side, the packaging material is fed while being sandwiched between the first roller and the second roller and the first rotating body,
On the side of the second rotary body, it is fed while being sandwiched between the third roller and the fourth roller and the second rotary body. Therefore, as the packaging material is fed, the rotating bodies and the rollers that are in contact with the rotating bodies via the packaging material rotate in the opposite directions, and therefore, the rotating bodies and the rollers are rotated. Since it will rotate well, the packaging material will twist
Wrinkles do not occur.

According to the third aspect of the present invention, the supply of the article into the packaging material is completed, and the end portion of the packaging material on the side of the article loading portion is moved by the packaging material sealing portion arranged on the article loading portion side. When fixed,
The packaging material sealing portion pulls the open end of the packaging material from the inside in different directions. When the packaging material sealing portion pulls the packaging material in this manner, the open end of the packaging material is stretched, so that the open end is not fixed while being twisted or wrinkled.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 13 show an embodiment of a packaging machine for articles according to the present invention.
It is a whole block diagram of the packaging machine 1. The packaging machine 1 shown in these figures is roughly classified into a power unit shown in FIGS. 3 and 4.
5 to 7, a core portion shown in FIG. 8 (packaging material supply portion), a bottom seal portion shown in FIG. 9 (packing material sealing portion on the core portion side), and FIG. 10, a top seal portion (packaging material sealing portion on the packaging material guiding portion side), a batch shutter portion (article input portion) shown in FIG. 11, a packaging material guiding member shown in FIG. 12, and a cylinder shown in FIG. It is composed of a control system.

First, the reference numeral 5 in the drawing is a roll-shaped packaging material in which a tubular packaging material is wound into a roll shape with its hollow portion crushed (that is, in a band shape). This roll-shaped packaging material 5 is made of a polymer material such as nylon, polyethylene or the like in this example, and is preferably provided with a heat-weldable material on at least the inner surface thereof. It is placed on the original fabric hanging portion 10 attached to the outside.

As shown in detail in FIG. 8, the original fabric hanging portion 10 is provided between the parallel supporting members 11 fixed to the machine frame 4 with bolts in a direction orthogonal to the extending direction of the supporting members 11. It also comprises individually rotatable rollers 12 which are separated from each other. These rollers 12 have bearings 13 at both ends.
A support shaft 14 is provided via the support shaft 14, and the support shaft 14 is fixed to the support member 11 so as to rotate without being driven. Further, between the rollers 12, bars 15 that are parallel to the rollers 12 and are separated from each other are installed. Of these bars 15, one bar 15A is
Two rods, each having an external thread formed on the outer peripheral surface thereof, are connected through a tubular body 15a, and both ends thereof are supported by a bracket 15b fixed to the support member 11,
Further, one end projects outward from the bracket 15b and a handle wheel 15c is fixed. Therefore, when the handle wheel 15c is rotated, the rod 15A is rotated while being supported by the bracket 15b. When the two rods are integrated with each other through the tubular body 15a, male screws formed on the outer peripheral surfaces of the two rods advance in opposite directions.

The two rods 15 are provided with two moving members 16a which are fitted on both the rods 15 in a direction orthogonal to the axial direction of the rods 15.
Each of a has a protruding piece 16b protruding toward the opposite side.
Is fixed, and a roll-shaped packaging material guide 17 standing upward is attached to each of these protruding pieces 16b. The moving member 16a is formed with two through holes for external fitting on both the rods 15, but a female screw is threaded on the inner surface of the through hole on the side for external fitting on the one rod 15A. It is adapted to be screwed with a male screw formed on one bar 15A. On the other hand, the through hole on the side to be fitted on the other rod 15B is formed slightly larger than the diameter of the other rod 15B and is free. Therefore, the handle wheel 15c
When the bar 15A is rotated by rotating the moving member 16a
Move simultaneously toward or away from each other. Of course, the moving direction of these moving members 16a depends on the forward and reverse rotation directions of the handle wheel 15c.
Further, the roll-shaped packaging material guide 17 has a tubular body 17b attached to the outside of the fixed shaft 17a via a bearing (not shown), and the tubular body 17b is rotatable about the fixed shaft 17a.

The power unit 20 shown in FIGS. 3 and 4 is
It is arranged at the lower inside of the device body 3. In these figures, reference numeral 21 is a pedestal installed in the machine frame 4 in parallel with each other at equal intervals. These erection stands 21
A pair of brackets 22a are fixed to one end side (the right end side in FIG. 3) of the brackets by bolts.
A shaft 23 is rotatably supported by a bearing 22b, and a pinion 24 is fixed to the right end side of the shaft 23 in FIG. In this pinion 24,
A vertically extending rack 25 having a groove formed on the side surface of a prism is meshed with the rack 25. The rack 25 is connected at its lower end to a rod of a first bottom seal cylinder 26. This tube is connected to the rod of the second bottom seal cylinder 27. The first bottom seal cylinder 26 is attached to the support member 4A fixed to the machine frame 4, and operates the rack 25 with a relatively large stroke (for example, 10 cm, 20 cm ...). On the other hand, the second bottom seal cylinder 27 is attached to the support member 4B fixed to the machine frame 4, and operates the rack 25 with a relatively small stroke (for example, 1 cm, 2 cm ...).

On the other hand, each of the pedestals 21 has a pair of brackets 31 spaced apart in the longitudinal direction of the pedestal 21.
A and 31B are fixed by bolts, and guide shafts 32A and 32B are fixedly installed between the brackets 31A and 31B. Of these guide shafts 32A and 32B, two movable bodies 33A and 34A are slidably fitted onto the guide shaft 32A, and two movable bodies 33B and 34B are fitted onto the guide shaft 32B. These moving bodies 33A-
34B is movable along each guide shaft 32A, 32B. Of these moving bodies 33A to 34B, one end of an arm 35 is individually attached to each moving body 33A, 33B on the left side in FIG. 3 so as to be rotatable, and the other end of the arm 35 is It is connected to cranks 36 fixed to both ends of the shaft 23. As a result, when the rack 25 advances and retreats and the shaft 23 rotates, the crank 36 reciprocates in the vertical plane in accordance with the rotation of the shaft 23, and both arms 35 move both moving bodies 33A, 3A.
Move 3B at the same time. In addition, both moving bodies 33 at this time
The range of movement of A and 33B is from the bracket 31A on the left side in FIG. 3 to the approximate center in the longitudinal direction of the guide shafts 32A and 32B (hereinafter referred to as the center). Further, the brackets 31A, 31 on which the guide shaft 32B is installed
B and two moving bodies 33B, 3 fitted onto the guide shaft 32B.
Although not shown in FIG. 4, 4B is shown in the bottom seal portion shown in FIG.

Further, the installation table 21 on the right side of FIG. 3 is provided with first and second rotating bodies 41A and 41B shown in FIGS. 3 and 4. These first and second rotating bodies 41A, 41B are in the shape of rollers, are parallel to each other while keeping a distance from each other, are in the same horizontal plane in the height direction, and are orthogonal to the longitudinal direction of the erection base 21. It is attached with the positional relationship. Further, each of the first and second rotating bodies 41A, 41B is provided with a shaft 43 on one end side via a bearing 42.
Is fixed to the erection base 21 via the plate body 4D so that it can be rotated without being driven and is supported by the shaft 43 in a cantilever manner. Further, a stopper 44 for preventing the movement of a core, which will be described later, is attached to the plate body 4D, while two pulleys 45 are attached to the lower part of the surface on which the stopper 44 is attached. in addition,
A plate 4E is attached to the support member 4A, and two pulleys 46 are also attached to the plate 4E.

The first and second rotating bodies 41A,
A core portion 50, the details of which are shown in FIGS. 5 to 7, is disposed between the portions 41B, and the configuration thereof is as follows. That is, the core unit 50 includes a total of eight rollers 52a to 52h in this example.
52h includes four roller groups 52A and 52B each of which is separated from the upper side and the lower side while keeping a slight gap in the vertical direction.
The roller groups 52A and 52B are individually supported by the shaft 53. Further, the upper roller group 52
In A, the eccentric metal fitting 5 is provided between the two rollers 52b and 52c located inside and the two rollers 52a and 52d located outside of the four rollers 52a to 52d.
The two rollers 52, which are disposed inside, are located inside
Although b and 52c are on the same axis as the shaft 53, the two rollers 52a and 52d located on the outside are eccentric to the second rotating body 41B side with respect to the axis (FIG. 7). Further, in the lower roller group 52B, like the upper roller group, the two inner rollers 52f and 52g and the two outer roller 52 are located.
The eccentric metal fitting 54 is interposed between the first rotating body 41 and the two rollers 52e and 52h located outside the two rollers 52f and 52g located inside.
The configuration is eccentric to the A side (see FIG. 7).

The rollers 52a to 52h are
As shown in FIG. 5, the first and second rotating bodies 41A, 4A
When arranged between 1B, the rollers 52b and 52c forming the upper roller group 52A contact the first rotating body 41A, while the rollers 52a and 52d contact the second rotating body 41B and the lower side Roller 52 forming roller group 52B
The rollers 52f and 52g come into contact with the second rotary body 41B while the e and 52h come into contact with the first rotary body 41A.

A through hole 54a is formed in the eccentric metal fitting 54, and a shaft 56 is inserted into the through hole 54a, whereby the upper and lower roller groups 52A and 52B are integrated. Further, a packaging material interruption member 57 formed by bending a rod-shaped member is attached to the shaft 56, and the packaging material interruption member 57, as shown in FIG. 6, has the upper and lower roller groups 52A and 52B in a vertical plane. Is bent so as to go around, and the lower part is bent so as to form an obtuse angle below the center of the shaft 53 in the longitudinal direction.

Above the roller 52, a plate 61 is fixed to the shaft 56 with bolts.
Two swing guides 62 are attached to one edge of the shaft 53 which is parallel to the axial direction of the shaft 53. This swing guide 62
Is attached to the plate body 61 via a hinge 63 with a spring, and the swing amount thereof is adjusted by a swing amount adjusting bolt 64 that is screwed through the plate body 61. Further, the upper end portion of the swing guide 62 is formed in a comb shape as shown in FIG. 6 so that it intersects with a packaging material gripping blade provided in a packaging material guiding member described later while keeping a slight gap therebetween. It has become.

Here, the core portion 5 having the above-mentioned structure.
As described above, 0 is any member except that each roller 52 is supported by the first and second rotating bodies 41A, 41B simply by contacting the first and second rotating bodies 41A, 41B. Not even supported. Therefore,
After the packaging material X virtually shown by the one-dot chain line in FIG. 5 is opened by the packaging material interrupting member 57, the swing guide 62 is passed between each roller 52 and the first and second rotating bodies 41A and 41B. With respect to the flow up to, the rollers 52 and the first and second rotating bodies 41A and 41B guide the frictional force between the peripheral surfaces of these and the packaging material X and the packaging material X by the packaging material guiding portion described later. It rotates only with the force applied.

On the other hand, referring to FIGS. 3, 4 and 9,
The bottom seal portion 70 is fixedly arranged on the upper surfaces of the moving bodies 33A to 34B. That is, one bottom seal portion 70A (on the left side in FIG. 3) is provided with the two moving bodies 33.
A first stopper plate 71 fixed to the upper ends of A and 33B,
A second stopper plate 72 that is parallel to the first stopper plate 71 and is mounted above the first stopper plate by a predetermined distance; and a heater 73 between the first and second stopper plates 71, 72. A cutter 74 (packaging material cutting part) is provided between the first pressing plate 71 and the heater 73. The cutter 74 has a blade 74a for cutting the packaging material formed on the entire edge facing the center, and the tip of the blade 74a has the first and second stopper plates 7a and 7b.
It is attached at a position where it does not protrude from the tips of the heaters 1, 72 and the heater 73. Also, the first and second stopper plates 7
1, 72 and the heater 73 are integrated by a member (not shown), and a bolt 76 engaged with a spring 75 is provided on the outer periphery of the member. First and second stopper plates 71, 72
Also, the heater 73 is displaceable between the side closer to the center and the side away from the center.

The other bottom seal portion 70B (see FIG. 3)
(The right side in FIG. 2) is a first stopper plate 71 that is erected and fixed to the upper ends of the two moving bodies 34A and 34B, and a second stopper plate that is positioned parallel to the first stopper plate 71 and above a predetermined distance. 72 and a heater 73 between the first and second stopper plates 71, 72.
1, 72 and the heater 73 are the one bottom seal portion 7
Similar to 0A, it is integrated by a member (not shown), and this member is provided with a bolt 76 with which a spring 75 is engaged on the outer periphery. And both bottom seal parts 70A, 70B
The first stopper plate 71, the second stopper plate 72, and the heater 73 are located at the same height, and the end portions of the movable members 33A to 34B move along the guide shaft 32. Can be moved back and forth to a position where they come into contact with each other (that is, the center). Further, each of the first stopper plates 71,
The height at which the core portion 50 contacts the upper end of the swing guide 62, and therefore the swing guides 62 are closer to each other by the pressing of the first stopper plates 71 as the movable bodies 33 and 34 move. Then, the hinges 63 with springs swing toward the sides separated from each other.

Of the bottom seal portion 70, the other bottom seal portion 70B has a reference numeral 8 in FIGS.
One end of an arm indicated by 1 is attached so as to be rotatable, and the other end of the arm 81 is connected to a crank 82 fixed to the shaft 23 at substantially the center in the longitudinal direction. As a result, when the rack 25 advances and retreats and the shaft 23 rotates, the crank 82 reciprocates in the vertical plane as the shaft 23 rotates, and the arm 81 moves the other bottom seal portion 70B. Reference numeral 85 in FIGS. 3 and 4 is an escape cylinder for operating the push-out plate 75 standing upward, which is supported by the machine frame 4 and is arranged in the direction in which the rod of the escape cylinder 85 moves forward and backward. The push-out plate 75 advances and retreats, and the packaged article is pushed out of the apparatus main body 3.

On the other hand, the reference numeral 91 in FIG. 3 denotes an electric variable motor, which is a mounting plate 4F fixed to each of the support beams 4C positioned parallel to the erection base 21 in FIG.
A sprocket 92 is attached to the upper end of the rotary shaft of the electric variable motor 91. Further, in FIG. 4, a bracket 93 is fixed to each of the support beams 4C of the machine frame 4 by bolts at substantially the center of the support beam 4C in the longitudinal direction, and is attached to each of the brackets 93 via a bearing (not shown). Moreover, screw shafts 94A and 94B rising from the support beam 4C are rotatably provided. These screw shafts 94A, 94B have the same height in the vertical direction as the sprocket 92, and the sprocket 94a, 9B has the same height.
4b is externally fitted and fixed. In addition, the mounting plate 4F,
Sprockets indicated by reference numerals 95 to 98 are attached, and a chain 99 is wound around these sprockets 92 to 98. By the chain 99, the rotational force of the electric variable motor 91 is transmitted to the two screw shafts 94A and 94B via the sprockets 92 to 98, and these screw shafts 94A and 94B rotate synchronously.

A packaging material guide member 101 is attached to the screw shafts 94 to grasp the upper end of the packaging material after passing through the core portion 50 and guide it to the upper side of the apparatus main body 3. This packaging material guiding member 101 is virtually shown by a one-dot chain line in FIG. 3, and its details are shown in FIG. 12 (however, FIG. 12 is a half view). That is, the packaging material guiding member 101
Is attached to the main body 101a having a rectangular frame shape.
Two support plates 101b individually protruding outward from the two facing members in the horizontal direction are fixed to each other, and these support plates 101b are provided with through holes in which internal threads are threaded. Has been formed. The female screw formed in the through hole is adapted to be screwed with the male screw formed on the surface of the screw shafts 94A and 94B, and the screw shafts 94A and 94B are rotated by the rotation of the electric variable motor 91. Thus, the packaging material guiding member 101 can be moved up and down. It should be noted that stop limit switches (not shown) are provided in the lifting range limit areas of the packaging material guiding member 101, and deceleration limit switches are provided inside the lifting range of these stop limit switches. The limit switch is connected to the electric variable motor 91, and the rotational force of the electric variable motor 91 is controlled.

Further, in the frame-shaped main body 101a of the packaging material guiding member 101, the first and second rotating bodies 41 are provided inside two members which are not provided with the supporting plate 101b.
The shaft 102 is provided in a positional relationship parallel to A and 41B. The shaft 102 is supported by supporting members 103 near both ends thereof, and a clamp cylinder 105 is connected to one end of the shaft 102 via a crank 104. The clamp cylinder 105 is attached to a mounting member 106 that is fixed upright from the support member 103 on the side where the clamp cylinder 105 is provided, of the support members 103, and thus moves up and down at the same time as the packaging material guiding member 101 moves up and down. Further, a packaging material gripping blade 111 bent in a dogleg shape is fixed to the shaft 102. This packaging material holding blade 111
Is formed in a comb shape so as to intersect with the comb shape formed on the upper part of the swing guide 62 in the core portion 50 while keeping a slight gap therebetween, and the clamp cylinder 105 is most advanced. 12 is in the position shown in FIG. 12, and when the most retracted is from the state shown in FIG.
It swings toward the inside of a. Note that, as described above, since FIG. 12 is a half diagram, a configuration similar to this is provided symmetrically on the left side.

Then, referring to FIG. 2, an upper end opening of the packaging material is pulled on both of the support plates 101b of the packaging material guiding member 101 in a direction orthogonal to a line segment connecting the packaging material holding blades 111. A side clamp mechanism 130 is provided. The side clamp mechanism 130 includes a packaging material tension member 131 whose tip is bent in a hook shape on each of the support plates, and a side clamp cylinder 132 that advances and retracts the packaging material tension member 131. .

On the other hand, a top seal portion 120, the details of which are shown in FIG. 10, is arranged above the machine casing 4 (however, FIG. 10 is a half view). The top seal part 120 is
The pressing plate, which is disposed on both sides of the line connecting the screw shafts 94A and 94B, has a spherical front end and a rear end that is bracketed to a member 127 fixed to the machine frame 4. It is supported via 128. The push cylinder 12 is connected to the push cylinder 122.
With the advancing / retreating of 2, an advancing / retreating motion is performed toward the center. Below the pressing plate 121 and the push cylinder 122, a heater 125 for welding the upper end opening of the packaging material is welded.
The heater 125 is provided with a top seal cylinder 1 supported by a member 127 fixed to the machine frame 4.
26, and is capable of moving forward and backward toward the center as the top seal cylinder 126 moves forward and backward. The heater 125 described here and the heaters 73 in the bottom seal portions 70A and 70B are connected to a power source (not shown) and heated by energization from the power source.

Further, FIG. 11 shows the details of the batch shutter section 140 serving as an article supply port. The batch shutter unit 140 is provided inside a supply frame 141 formed in a frame shape.
Supply frame 1 by moving the batch shutter cylinder 142 back and forth
A shutter 143 is provided which can be opened and closed between the upper and lower parts of 41. The batch shutter cylinder 142 is pivotally supported by a bracket 141a fixed to the outside of the supply frame 141. The intersection of the shutter 143 and the supply frame 141 when the shutter 143 is opened and closed has a comb shape so that the shutter 143 and the supply frame 141 can intersect with each other while keeping a slight gap therebetween. Further, the shutter 143 is the shaft 1 supported by the supply frame 141.
The shaft 146 and the cylinder 142 are fixed to each other by a connecting plate 147 so that they can be opened and closed. Further, referring to FIG. 1, the batch shutter unit 140 is provided with a sensor 148 that counts the articles supplied in the supply frame 141.

Each of the cylinders described above and the electric variable motor 91 are connected to a controller 151, and are operated by a signal from the controller 151, as conceptually shown in FIG. It is like this. Further, the controller 151 is provided with an automatic / manual changeover switch 152, a packaging material set button, a one-cycle button, etc., which are not particularly shown, and causes the packaging machine 1 to sequentially perform a series of operations therein. A sequence circuit is built in. Further, as shown in the figure, solenoid valves are respectively interposed between the controller 151 and each cylinder, and the controller 1
The signal of 51 is sent to these solenoid valves.

Next, the operation of the packaging machine 1 having the above structure will be described. Here, a case will be described in which the present invention is applied to a so-called exterior packaging in which a plurality of articles (for example, 10, 20, ...) Are packaged together. First, the packaging material X is set on the apparatus body 3. That is, when the automatic / manual switch 152 provided in the controller 151 is set to manual and the packaging material set button is pressed once, the first and second bottom seal cylinders 26 and 27 are retracted, and the bottom seal portion 7 is removed.
0 is fully open. In this state, the operator manually puts the roll-shaped packaging material 5 on the original fabric hanging portion 10 and pays out the packaging material X from the roll-shaped packaging material 5. The dispensed packaging material X is passed through each of the pulleys 45 and 46 (FIG. 3) and then opened by the packaging material interrupting member 57 of the core portion 50, and as shown in FIG. 5, the opened inner surface of the packaging material X. Is brought into contact with each roller 52, and the outer surface is brought into contact with the first and second rotating bodies 41A and 41B to be fed, and the open end thereof is brought to the upper end of the swing guide 62. Then, pressing the one-cycle button provided on the controller 151 completes the setting of the packaging material X.

When the packaging material X has been set in this manner, the automatic / manual changeover switch 152 is made automatic.
When the automatic / manual switch 152 is set to automatic, a signal α ₁ is sent from the controller 151, and the electric variable motor 91 (FIG. 3) rotates in the forward direction. When the electric variable motor 91 rotates, the rotation of the electric variable motor 91 is transmitted to both screw shafts 94A and 94B by the sprockets 92 to 98 and the chain 99 (both in FIG. 4), and these rotate in synchronization. When the screw shafts 94 </ b> A and 94 </ b> B rotate, the packaging material guiding member 101 screwed onto them rotates the swing guide 62 of the core unit 50.
Descend to the top of. At the time of this descending, the packaging material guiding member 10
When 1 touches the deceleration limit switch and the stop limit switch, the rotation of the electric variable motor 91 is decelerated / stopped.

Then, a signal β ₁ is sent from the controller 151 to operate the clamp cylinder 105.
The operation of the clamp cylinder 105 is performed by the crank 104
Is transmitted to the shaft 102, and the shaft 102 rotates, so that the packaging material gripping blades 111 swing toward the sides away from each other. The packaging material gripping blades 111 (FIGS. 3 and 12) intersect with the swing guide 62 of the core portion 50 with a slight gap therebetween, and the swing guide 62 holds the open end of the packaging material X at the upper end. Push it open from the inside. On the other hand, the side clamp part 130
In FIG. 2, the signal θ from the controller 151
_{After the} side clamp cylinder 132 is advanced by ₁ , the side clamp cylinder 132 is retracted by the signal θ ₂ , and the packaging material tension member 131 opens the packaging material X in the direction orthogonal to the direction in which the packaging material holding blade 111 is pushed open. Push the ends from the inside and open. At this point, the packaging material X is in a state of being stretched on the packaging material gripping blade 111 by its own tension, and when the signal α ₂ is sent from the controller 151 thereafter, the electric variable motor 91 rotates in the reverse direction, Material induction member 1
01 rises. Also in this case, the packaging material guiding member 101
However, the rotation of the electric variable motor 91 is decelerated / stopped by contacting the deceleration limit switch and the stop limit switch.

The packaging material X rises while being gripped by the packaging material gripping blades 111 (FIGS. 3 and 12), so that the packaging material X is sequentially opened to form a tubular (bag-like) shape in the core portion 50 (FIG. 1). reference).
At this time, in the core unit 50, the upper roller group 52A
The rollers 52b and 52c forming the roller 52a and 52c contact the first rotating body 41A, while the rollers 52a and 52d contact the second rotating body 41B, and the rollers 52e and 5 forming the lower roller group 52B.
2h contacts the first rotating body 41A, while the roller 52
f and 52g come into contact with the second rotating body 42B. Therefore, as the packaging material X is sent, the first rotating body 41A and the rollers 52b, 52c, 52e, 52h, and the second rotating body 41B and the rollers 52a, 52d, 52f, 52.
g will rotate in the opposite direction, and therefore these first and second rotating bodies 41A, 41B, each roller 52a.
~ 52h will always rotate well, so packaging material X
There will be no twisting or wrinkling, and the paper will be sent smoothly.

When the packaging material guiding member 101 (FIGS. 3 and 12) has finished rising, signals γ ₁ and γ from the controller 151.
₂ is delivered, the first and second bottom seal cylinders 2
6, 27 (Fig. 3) are activated. The operation of the first and second bottom seal cylinders 26 and 27 raises the rack 25, and the pinion 24 meshing with the rack 25 rotates clockwise in FIG. When the pinion 24 rotates, the shaft 23 rotates, and the rotation of the shaft 23 causes each crank 3 to rotate.
6 and 82 (FIG. 4) to the arms 35 and 81, and these arms 35 and 81 move the moving bodies 33A to 34B to the center. At this time, the moving bodies 33A to 34
The bottom seal portion 70 also moves with the movement of B, but the movement of the bottom seal portion 70 causes the movement of both the first stopper plates 7
1 pushes the upper end of the swing guide 62 of the core portion 50, and the swing guides 62 swing toward each other.

At this time, the heater 73 is already energized, and the first stopper plate 71 is moved along with the movement of the bottom seal portion 70.
The packaging material X on the further downstream side is sandwiched and welded by the heater 73. Then, as the moving bodies 33A to 34B further approach the center, both bottom seal portions 70A,
0B first and second stopper plates 71, 72 and heater 73
Are pressed against each other and are urged toward each other by the elasticity of the spring 75. In this way, the moving body 33
While A to 34B are approaching, the first and second stopper plates 71, 7
2 and the heater 73 are urged away from each other,
The cutter 74 projects beyond these tips, and the packaging material located downstream of the welded portion is cut.

When the packaging material X is set in the complete standby state in this way, a predetermined number of articles are put into the packaging material X from the batch shutter section 140 (FIG. 11). More specifically, when the signal δ ₁ is sent from the controller 151, in the batch shutter unit 140, the batch shutter cylinder 142 advances and the shutter 143 causes the supply frame 1 to move.
41 is closed, and the quantity of articles counted by the sensor 148 is put in the supply frame 141. Then, when the packaging material X is in a complete standby state as described above, a signal δ ₂ is sent from the controller 151 to retract the batch shutter cylinder 142, and the article in the supply frame 141 is put into the packaging material X. To be done.

When an article is placed in the packaging material X, the signal δ ₁ is again sent from the controller 151. As a result, the batch shutter cylinder 142 operates and the shutter 143 is closed, so that the articles to be input next time are supplied to the supply frame 1.
It accumulates in 41. On the other hand, a signal ε ₁ is sent from the controller 151 to operate both push cylinders 122, the pressing plates 121 move toward each other and close the opening of the packaging material X while pressing it. At the same time, a signal θ ₃ is sent from the controller 151, the side clamp cylinder 132 is further retracted, and the packaging material holding blade 1
The open end of the packaging material is sealed in a direction orthogonal to the pushing and opening direction of 11.

Then, after a lapse of a predetermined time, the controller 151 sends a signal ζ ₁ and the top seal cylinder 1
26 is operated, and the heater 125 is energized for a predetermined time. At the same timing as the energization of the heater 125, a signal ε ₂ is sent from the controller 151 to retract the push cylinder 122, and a signal β ₂ is sent to retract the clamp cylinder 105.

After that, when the cooling of the heater 125 is finished,
A signal ζ ₂ is sent from the controller 151 and the top seal cylinder 126 retracts. Then, the controller 15
The signal η ₁ is sent from ₁ and the escape cylinder 85 advances, whereby a package formed by packaging (exterior) a plurality of articles is discharged from the apparatus body 3 to the outside. The escape cylinder 85 operated at this time is retracted by the controller 151 sending a signal η ₂ after the package is discharged.

After the series of steps up to this point, the side clamp cylinder 132 advances and the packaging material tension member 131 advances according to the signal θ ₁ from the controller 151. At the same time, a signal γ ₄ is sent from the controller 151, the first bottom seal cylinder 26 remains advanced, and the second bottom seal cylinder 27 retracts. After this,
When the signal γ ₃ is again sent from the controller 151, the cylinder 6 retracts the first bottom seal cylinder 26 and the bottom seal portion 70 is fully opened. In this way, the state of the packaging machine 1 is set in the same manner as the initial state, and by repeating such operations, the packaging is sequentially performed.

As described above, according to the packaging machine 1 for articles of the present invention, the packaging material X can be supplied, the articles can be loaded, and the opening of the packaging material X can be sealed by one unit. Work efficiency is improved and economic efficiency is significantly promoted. On the other hand, in the factory, it is not necessary to secure an extra space, and since the roller 52 in the core portion 50 is eccentric, the packaging material X can be smoothly fed.

The articles in this embodiment can be packaged not only in the drawing described in the prior art but also in any article. Furthermore, this packaging is not limited to the exterior, but can be applied to the interior or other packaging. Further, each cylinder described in the present embodiment may be provided with a sensor for confirming the forward / backward movement, or such a sensor may be applied to an electric variable motor. Further, the core unit 50 is provided with a warning device for catching the packaging material X, the heaters 73 and 125 are provided with a disconnection warning device, and the raw cloth hanging portion 10 is provided with a remaining amount detection device for the roll-shaped packaging material 5. May be provided.

[0048]

As is clear from the above description, according to the packaging machine for articles of the present invention, the following effects can be obtained. According to the first aspect of the present invention, one machine is provided with the supply / opening of the packaging material, the loading of the article into the opened packaging material, and the closing of the packaging material opening after the loading of the article. Since the packaging machine can be constructed in a compact manner, it is not necessary to secure an extra space when the packaging machine is installed in the factory. Further, since it is not necessary to individually provide each of the above steps, work efficiency can be improved and cost reduction can be promoted.

According to the second aspect of the present invention, as the packaging material is fed, the rotating bodies and the rollers in contact with these rotating bodies via the packaging material rotate in opposite directions. Therefore, since each rotator and each roller can be rotated well, when the packaging material is sent, the packaging material is not twisted, wrinkled or the like, and the packaging material is smoothly fed. You can As a result, it is possible to prevent the packaging machine from being stopped or broken due to the occurrence of twisting, wrinkling, etc. of the packaging material, which in turn can significantly improve work efficiency and economy.

According to the third aspect of the present invention, when the opening of the packaging material is fixed, no twist, wrinkle or the like is generated in the packaging material, and therefore the opening can be securely and beautifully fixed. You can

[Brief description of drawings]

FIG. 1 is an overall view of an article packaging machine shown as an embodiment of the present invention.

FIG. 2 is an overall view of the same.

3 is a side view showing details of a power unit in the article packaging machine shown in FIGS. 1 and 2. FIG.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view showing details of a core in the packaging machine for the article.

FIG. 6 is a front view of the same.

FIG. 7 is a plan view showing details of a roller forming the core shown in FIGS. 5 and 6;

FIG. 8 is a plan view showing details of an original fabric hanging portion in the packaging machine for the article.

FIG. 9 is a plan view showing details of the bottom seal portion in the packaging machine for the article.

FIG. 10 is a half side view showing details of the top seal portion (details of the portion 10 in FIG. 1) in the packaging machine for the article.

FIG. 11 is a front view showing details of the batch shutter unit in the packaging machine for the article.

FIG. 12 is a half side view showing details (details of a portion 12 in FIG. 1) of a packaging material guiding unit in the packaging machine for the article.

FIG. 13 is a conceptual diagram showing a cylinder control system in the packaging machine for the article.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Packaging machine 3 Device main body 5 Roll-shaped packaging material 10 Original fabric hanging part (packaging material supply part) 20 Power part 41A 1st rotary body 41B 2nd rotary body 50 Core parts 52a-52h Roller 57 Packaging material interruption member 101 Packaging Material guiding member 70 Bottom seal part (packing material sealing part on the core part side) 73 Cutter (packaging material cutting part) 120 Top seal part (packaging material sealing part on the packaging material guiding part) 140 Batch shutter part (article) Input part) 131 Side clamp mechanism (packaging material sealing part) 151 Controller X Packaging material

Claims (3)

[Claims] 1. A packaging material supply section for continuously supplying a tubular packaging material made of a thin and flexible material to a packaging material passage in an apparatus main body, and the packaging material arranged in the packaging material passage. A core part for opening the packaging material supplied from the material supply part, and a core part which is disposed in the apparatus main body at a position separated from the core part by a length of one bag or more of the packaging material and supplied from the article supply part. An article loading section for receiving the loaded article and loading the article into the packaging material opened in the core section, and the core provided movably between the core section and the article loading section. A packaging material guiding portion for guiding the open end of the packaging material that has passed through the portion to the article inputting portion, and is disposed within the moving range of the packaging material guiding portion on the core portion side and the article feeding portion side. A packaging material sealing portion for sandwiching and sealing the front end and the rear end of the packaging material for the one bag, a packaging material sealing portion on the core portion side, and the core portion. And a packaging material cutting unit which is disposed between the packaging material and cuts the packaging material into a length of one bag. 2. The core part has a pair of rollers spaced apart from each other in the feeding direction of the packaging material from the core part to the packaging material guiding part, arranged in the width direction of the packaging material on one side. And at least two sets on the other side, and among these rollers, the first roller located on the upstream side in the feed direction and on the one side is located on the downstream side in the feed direction and on the other side. The second roller that is in sliding contact with the first rotating body that extends in the width direction, is the same as the third roller located on the upstream side in the feed direction and on the other side, and is on the downstream side in the feed direction. The fourth roller located on the one side is in sliding contact with a second rotating body located on the opposite side of the first rotating body with the pair of rollers extending therebetween in the width direction, and Located on the downstream side of the pair of rollers in the feeding direction and interrupting the hollow portion of the packaging material. The packaging machine for articles according to claim 1, further comprising an interruption member. 3. The packaging material guiding portion is provided with a packaging material sealing portion for pulling and sealing the open end of the packaging material guided by the packaging material guiding portion from inside to directions different from each other. A packaging machine for articles according to claim 1 or 2.