JP5392802B2 - Plastic bag folding and laminating equipment - Google Patents

Description

  The present invention relates to a plastic bag folding and laminating apparatus. More specifically, the present invention relates to a plastic bag in which a heat bonding portion and a cutout portion are formed and sequentially stacked on a stacking conveyor, and a predetermined amount of plastic bags are stacked on the stacking conveyor. It is related with the folding / lamination apparatus of the plastic bag which transfers the plastic bag piled up to the discharge conveyor via the drawing pressurization part, and discharge | emits it.

  In general, plastic bags (plastic bags) are formed by performing inflation extrusion on synthetic resin such as polyvinyl chloride and polyethylene, and a cut line and a heat seal part are formed here to put articles inside Used for.

  Large food stores such as large discount marts and department stores that use a large amount of plastic bags mainly use roll bags wrapped around plastic bags. These roll bags have a heat-sealing part for sealing and easy cutting. A large number of cutout portions are provided in the longitudinal direction, and then wound into a film shape.

  On the other hand, unlike roll bags, disposable plastic bags are folded so that a large number of plastic bags can be stacked and packaged in paper boxes or packs. Take out one by one and use it.

  However, in the case of a plastic bag that is folded so that a large number of plastic bags are stacked in this way, the lamination process is not performed manually but automatically, but the plastic bags of each layer are not neatly arranged in the lamination process, Not only is automatic packaging difficult, but it is also difficult to take out irregular plastic bags when using it.

  In particular, after the predetermined amount is stacked, if the taking-out process is not performed sequentially, the stacked state may be disturbed and packaging may be difficult.

  Furthermore, although folded in the laminating process, there is a problem that the stacked plastic bags are blown away or disturbed by the surrounding air accompanying the movement of some devices.

  The present invention has been made in view of the above circumstances, and its purpose is to improve the quality by folding and stacking a plastic bag with a uniform length on the upper part of the laminating conveyor using the transport device, and the stacking is performed. The present invention provides a plastic bag folding and laminating apparatus that increases productivity by automating the process of transferring and discharging a plastic bag to a discharge conveyor using a drawing pressurization unit.

  In order to achieve the above object, the present invention includes a transport device unit 20 that supplies a plastic bag 10 with an upper roller 21 and a lower roller 22, and a stacking device unit 30 on which the supplied plastic bag 10 is folded and stacked. , A pressing device 40 that presses the upper part of the plastic bag 10 that is folded and stacked on the laminating device 30, and is provided between the laminating device 30 and the lower roller 22. A fixed suction device 50 for sucking one side of the bag 10, and the stacking device section 30 is provided with a stacking conveyor 31 on which the plastic bags 10 are stacked, and stacked behind the stacking conveyor 31. A plastic bag folding and laminating apparatus is provided in which a discharge conveyor 32 for transporting the plastic bag 10 is provided.

  The plastic bag folding and laminating apparatus according to the present invention is provided in the drawer pressurizing unit 60 for transporting the plastic bags 10 stacked on the multilayer conveyor 31 toward the discharge conveyor 32, and in the drawer pressurizing unit 60. A drawer pressure plate 61 that supports the upper portion of the plastic bag 10 stacked on the stacking conveyor 31 and conveys it toward the discharge conveyor 32; and a drawer vertical conveyance unit 62 that moves the drawer pressure plate 61 up and down. And a drawer front / rear transport unit 63 that moves the drawer pressure plate 61 back and forth, and the drawer pressure plate 61 is formed such that the tip is bent downward. A non-slip tab 611 is attached to the lower part.

  Further, in the plastic bag folding and laminating apparatus according to the present invention, the pressing device section 40 includes a pressing lift bar 42 on both sides attached to a pressing lift section 41 on the bottom portion, and the pressing lift bars 42 on both sides. A pressing horizontal frame 43 connected between the upper parts of the plastic bag 10 and a pressing base part 44 connected to the lower part, and a pressing rake part formed on the front or rear side of the pressing base part 44 and pressing the upper part of the stacked plastic bags 10. 45, and the upper roller 21 and the lower roller 22 are constituted by two-row rollers, and the ring belt 24 is connected to the belt grooves 23 formed in the upper roller 21 and the lower roller 22, respectively. Then, the plastic bag 10 is supplied through the ring belt 24.

Furthermore, the plastic bag folding and laminating apparatus according to the present invention further includes an aligning partition part 70 in which an aligning partition 71 for preventing the plastic bag 10 stacked on the stacking apparatus part 30 from being disturbed rearward is formed. The alignment partition portion 70 is provided with an alignment operation portion 73 that moves the alignment partition 71 and the alignment frame 72 up and down.

  Furthermore, in the plastic bag folding / laminating apparatus according to the present invention, the transport device unit 20 provided with the upper roller 21 and the lower roller 22, the laminating device unit 30, the pressing device unit 40 and the fixing device. The suction device 50 is provided on the upper side and the lower side with respect to the folding laminated frame F, and the plastic bags 10 are folded and stacked on the upper side and the lower side.

  According to the present invention, in the process of sequentially folding and stacking the plastic bag in which the cut portion is formed between the thermal bonding portions on the upper part of the stacking conveyor using the transport device unit, one side of the plastic bag is fixed to the suction device. As a result, the plastic bags are folded to a uniform length, and the plastic bags are stacked with the same length on top of the plastic bags. As a result, the quality is improved.

  In addition, by automating the process of transferring and discharging plastic bags stacked at a predetermined length on the upper part of the stacking conveyor to the discharge conveyor using the drawer pressurization unit, the productivity of plastic bags is increased. The effect of becoming is obtained.

  Further, since the plastic bags stacked while being pushed by the two-row roller are arranged in an orderly manner by the alignment partition portion, the standard becomes constant in the subsequent conveyance process and the packaging process, and further, the user convenience is improved.

  Further, since the pressing rake portion of the pressing device is formed in a finger shape, there is an advantage that the stacked plastic bags are not disturbed even if the pressing rake portion moves up and down. In particular, when the pressing device is formed in a plate shape, static electricity may be generated between the stacked plastic bags, which may rather disturb the stacked plastic bags. However, as in the present invention, the pressing device If the pressing rake part is formed in a finger shape, there is an advantage that static electricity is not generated between the stacked plastic bags and the stacked state of the plastic bags is not disturbed.

It is a schematic illustration figure of the folding and lamination apparatus of the plastic bag which concerns on this invention. 1 is a perspective view of a plastic bag folding / laminating apparatus according to the present invention. It is a front view which shows the drawer pressurization part of the folding and laminating apparatus of the plastic bag which concerns on this invention. It is an illustration figure which shows the operation state of the folding and laminating apparatus of the plastic bag which concerns on this invention according to the step. It is an illustration figure which shows the operation state of the folding and laminating apparatus of the plastic bag which concerns on this invention according to the step. It is an illustration figure which shows the operation state of the folding and laminating apparatus of the plastic bag which concerns on this invention according to the step. It is an illustration figure which shows the operation state of the folding and laminating apparatus of the plastic bag which concerns on this invention according to the step. It is an illustration figure which shows the operation state of the folding and laminating apparatus of the plastic bag which concerns on this invention according to the step. It is an illustration figure with respect to the press apparatus part of the folding and laminating apparatus of the plastic bag which concerns on this invention. It is an illustration figure with respect to the alignment partition part of the folding and laminating apparatus of the plastic bag which concerns on this invention.

  Hereinafter, a plastic bag folding and laminating apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

  The plastic bag folding and laminating apparatus A according to the present invention includes, as shown in FIGS. 1 to 10, a transport device unit 20 for transporting the plastic bag 10, a stacking device unit 30, a pressing device unit 40, and a fixed suction device. The apparatus 50 is comprised.

  Here, the plastic bag 10 is formed by performing inflation extrusion on a synthetic resin such as polyvinyl chloride and polyethylene, and a cut line and a heat seal part are formed at a constant interval, and is constant. When the above tension is applied, the cut line is cut off.

  Moreover, the said conveying apparatus part 20 has a function which supplies the plastic bag 10 continuously with the upper roller 21 and the lower roller 22, and the upper roller 21 and the lower roller 22 are comprised from the 2 row roller.

  Further, the upper roller 21 and the lower roller 22 have different diameters from each other and are provided at a predetermined interval. A belt groove 23 is formed in each of the upper roller 21 and the lower roller 22, and a ring belt 24 is connected to the belt groove 23, so that the plastic bag 10 is brought into contact with the upper roller 21 and the lower roller 22 and conveyed. Rather than being stacked on the ring belt 23, it is stacked on the stacking conveyor 31.

  The stacking unit 30 folds and stacks the plastic bags 10 supplied via the transport unit 20, and includes a stacking conveyor 31 on which the plastic bags 10 are directly stacked. Is provided with a discharge conveyor 32 on which the stacked plastic bags 10 are conveyed. The stacking conveyor 31 and the discharge conveyor 32 are preferably configured so as to be sequentially operated by a servo motor or the like that is a driving means based on a signal from a control unit provided in parallel. That is, the discharge conveyor 32 is configured to operate after the stacking conveyor 31 is operated.

  The pressing device section 40 has a function of pressing an upper portion of the plastic bag 10 that is folded and stacked on the laminating device section 30, and is attached to a pressing lift section 41 at the bottom of the pressing device section 40 so as to be movable up and down. A pressing lift bar 42 composed of rods on both sides is provided, and a pressing horizontal frame 43 connected between the upper parts of the pressing lifting bars 42 on both sides and a pressing base part 44 is connected to the lower part.

  A pressing rake portion 45 that presses the upper portion of the stacked plastic bags 10 is formed in front or rear of the pressing base portion 44. The pressing rake portion 45 presses the plastic bag 10 from the upper portion to the lower portion, This prevents the stacked plastic bags 10 from floating. In particular, since the pressing rake portion 45 is formed in a number of fingers, after the plastic bag 10 is pressed, the upper air around the pressing rake portion 45 moves further from the lower portion to the upper portion. It slips out between the fingers, thereby preventing the plastic bag 10 from being lifted by the surrounding air. Since the pressing rake portion 45 is formed in a finger shape, the contact portion between the pressing rake portion 45 and the stacked plastic bags becomes relatively narrow. For this reason, the influence by static electricity between the plastic bag 10 and the press rake part 45 is lost, and thereby the disturbance phenomenon of the stacked plastic bags due to static electricity does not occur. As a result, the stacked plastic bags 10 are not disturbed by the plastic bags stacked at a high speed and the pressing rake portion 45 that reciprocates these plastic bags at a high speed. .

  The fixed suction device 50 is provided between the laminating device unit 30 and the lower roller 22, and has a function of sucking and pulling one side of the plastic bag 10 supplied via the transport device unit 20. The lower part of the plastic bag 10 is temporarily pulled by the air pressure sucked by a large number of suction holes 52 formed in the fixed suction pipe 51.

  An air suction pipe is connected to the fixed suction pipe 51 with the suction hole 52, and a vacuum pump and a solenoid valve are attached to the air suction pipe, and the amount of air sucked into the suction hole 52 by the operation of the solenoid valve is reduced. It is preferably configured to be selectively adjusted or short-circuited.

  In addition, the drawer pressurizing unit 60 has a function of pulling out the plastic bags 10 stacked on the laminated conveyor 31 using the discharge conveyor 32. The drawer pressurizing unit 60 is stacked on the laminated conveyor 31. A drawer pressurizing plate 61 that supports the upper part of the plastic bag 10 and transports it toward the discharge conveyor 32; a drawer vertical transporting unit 62 made of an air cylinder that moves the drawer pressurizing plate 61 up and down; A drawer front / rear transport unit 63 made of an air cylinder for moving the drawer pressure plate 61 back and forth is provided.

  The drawer pressurizing plate 61 is formed such that the front end is bent downward, the front end is easy to press the front part of the bundle-unit plastic bag stacked on the stacking conveyor 31, and the drawer pressurizing plate 61 In order to prevent slipping in the process of moving backward, a non-slip tab 611 having a predetermined length is attached to the lower part of the bent tip of the drawer pressure plate 61.

  Thus, after the predetermined amount of the plastic bags 10 are temporarily stacked by the drawer pressurizing unit 60, the predetermined amount of the plastic bags 10 is discharged toward the discharge conveyor 32 by the operation of the drawer pressurizing unit 60. . Here, the predetermined amount may normally be 50 sheets, 100 sheets, or 200 sheets, but is not limited thereto, and the amount may be appropriately set as necessary. That is, each component that performs a temporary stacking process that is stacked on the stacking conveyor by the heat sealing process, the cutting process, the fixed suction device, and the pressing device unit, which are the preceding processes, operates continuously, and thereafter, a predetermined amount of In the state where the plastic bags 10 are stacked, the drawer pressurizing unit 60 operates once.

The alignment partition portion 70 has a function of preventing the plastic bags 10 stacked on the stacking conveyor 31 of the stacking device portion 30 from being disturbed rearward via the transport device portion 20, and the alignment partition portion 70 includes: An alignment operation part 73 made of an air cylinder is provided above the alignment partition part 70 to move the alignment partition 711 and the alignment frame 72 up and down. The alignment operation unit 73 preferably includes an air generation unit that operates by receiving a signal from the control unit, a flow path or a guide pipe, a solenoid valve, and the like.

  On the other hand, a folding and laminating unit composed of the conveying device unit 20 provided with the upper roller 21 and the lower roller 22, the laminating device unit 30, the pressing device unit 40, and the fixed suction device 50 is provided. Alternatively, a two-layer structure may be formed that defines an upper fold stack portion on the upper side and a lower fold stack portion on the lower side with respect to the fold stack frame F.

  Thus, by simultaneously folding and stacking the plastic bag 10 on the upper side and the lower side, it is possible to efficiently use a narrow space and further increase the productivity of the plastic bag per unit time.

  That is, FIG. 9 shows that the pressing device section 40 is provided in an upper and lower two-layer structure. In the pressing device section 40 having such a two-layer structure, the support frame 46 is integrally fixed to the folded laminated frame F in the vertical direction. Further, the support frame 46 is provided with support guides 461, and the pressure raising / lowering bars 42 including the front pressure raising / lowering bars 421 and the rear pressure raising / lowering bars 422 are attached to the support guides 461 on both sides thereof. It should be noted that the front pressing elevator bar 421 and the rear pressing elevator bar 422 can slide up and down with respect to the support guide 461.

  Further, a pressing portion operating frame 47 is provided on the upper side of the pressing / lifting rod 42 composed of the front pressing lifting / lowering rod 421 and the rear pressing lifting / lowering rod 422. Both the part operation frames 47 are moved up and down.

  Furthermore, the pressing lift bar 42 is provided with an upper pressing frame 462 and a lower pressing frame 463 on both sides. Thus, the upper pressing horizontal frame 431 is disposed between the upper pressing frames 462 on both sides, and the lower pressing lateral frame 432 is disposed between the lower pressing frames 463 on both sides.

  Further, an upper pressing base portion 441 and an upper pressing rake portion 451 are attached to the upper pressing horizontal frame 431, and similarly, a lower pressing base portion 442 and a lower pressing rake portion 452 are also attached to the lower pressing horizontal frame 432. For this reason, the press rake part 45 which consists of the upper press rake part 451 and the lower press rake part 452 connected with the press raising / lowering stick | rod 42 by the action | operation of the press raising / lowering part 41 moves up and down simultaneously.

  In addition, a gap adjusting rod 471 is attached to both sides of the upper pressing portion operating frame 47, the upper pressing frame 462, and the lower pressing frame 463, and a gap adjusting grip portion 472 is provided above the gap adjusting rod 471. Provided. Therefore, when the gap adjusting grip 472 is turned, the upper pressing frame 462 and the lower pressing frame 463 attached to the gap adjusting rod 471 can be moved upward or downward with reference to the pressing portion operating frame 47. Accordingly, the height of the press rake portion 45 can be adjusted by the gap adjustment gripping portion 472 and the gap adjustment rod 471.

  Next, as shown in FIG. 10, the structure of the alignment partition portion 70 having a two-layer structure will be described. The alignment partition portion 70 is provided on the alignment portion attachment plate 77 provided on the alignment portion attachment frame 76. In FIG. 10, the drawing pressurizing unit that can be juxtaposed with the folded laminated frame F and the alignment unit mounting frame 76 is not shown.

  For this reason, the alignment portion mounting plate 77 is provided with an alignment operation portion 73 at the upper portion, and the alignment frame 72 is connected to the piston shaft of the alignment operation portion 73.

  For this reason, the alignment frame 72 has a rectangular shape, and an alignment partition 71 for aligning the plastic bag 10 is attached to the alignment frame 72.

  Accordingly, the alignment partition 71 includes an upper alignment partition 711 attached to the upper side of the alignment frame 72 having a rectangular shape, and a lower alignment partition 712 attached to the lower side of the alignment frame 72. The alignment frame 72 has a rectangular shape, so that the stacked plastic bags 10 can pass through the central portion of the alignment frame 72.

  Hereinafter, a process in which a plastic bag is produced by the plastic bag folding / laminating apparatus having such a configuration will be described.

  First, the plastic bag 10 is molded by the above-described molding process using the plastic bag molding apparatus, and a heat seal portion is formed by the heat seal portion 25 at a certain interval in the plastic bag 10. Thereafter, the plastic bag is supplied by the ring belt 23 rotated by the upper roller 21 and the lower roller 22 of the transport device unit 20. Next, the plastic bag is supplied to the upper part of the laminating conveyor 31 constituting the laminating apparatus unit 30 shown in FIGS.

  That is, the plastic bag supply step is performed first. Next, a heat seal process is performed by the heat seal unit 25 to form a heat seal portion in the continuously supplied plastic bag, and the continuously supplied plastic bag is partitioned into a number of bag regions. Thereafter, a large number of cut portions and uncut portions are defined in the vicinity of the heat seal portions of the large number of plastic bag regions while passing through the cut portions 26. For example, in one embodiment of the present invention, each bag region may be attached in the lateral direction to a continuously supplied plastic bag, and one side may be cut off. For this reason, the plastic bag that is defined in the heat seal part and the cut part in this way and divided into a large number of bag regions in a row is used as a bag, and when one side is pulled, the cut line is cut off. Cleaved into individual bags.

  Next, the tip of the plastic bag 10 supplied to the upper part of the laminated conveyor 31 comes into contact with the alignment partition 71. Then, ambient air is sucked in through a suction hole 52 formed in the fixed suction pipe 51 of the fixed suction apparatus 50, and one side of the plastic bag 10 on the upper side is pulled toward the fixed suction pipe 51. That is, a plastic bag suction step is performed.

  Furthermore, in a state where the plastic bag 10 is pulled, a new plastic bag 10 is supplied to the upper part of the stacking conveyor 31 via the transport device unit 20, whereby a new plastic bag 10 is newly added to the upper part of the already stacked plastic bags 10. Other plastic bags 10 are folded and stacked. That is, a plastic bag stacking step is performed.

  At this time, a part of the plastic bag 10 is pressed by the pressing horizontal pipe 43 provided at the lower end of the pressing lift 42 in the process in which the pressing lift 42 is reciprocated up and down by the pressing lift 41, When the pressing rake portion 45 of the pressing base portion 44 presses the upper portion of the plastic bag 10 stacked on the upper portion of the laminated conveyor 31, the plastic bag 10 is prevented from being disturbed. That is, a plastic bag pressing step is performed.

  Further, by repeating the above-described process, a predetermined amount of the plastic bags 10 are folded and stacked on the upper portion of the stacking conveyor 31 of the stacking device section 30, as shown in FIG. After the aligning frame 72 and the aligning partition 71 are moved upward, as shown in FIG. 6, the pulling pressure plate 61 of the pulling pressure unit 60 is moved toward the stacking conveyor 31 by the pulling front / rear transporting unit 63, and the pulling up / down transporting is performed. The plastic bag 10 is moved down by the part 62 and pressurized. That is, a pressure step of the plastic bag is performed.

  Next, as shown in FIGS. 7 and 8, the stacking conveyor 31 and the discharge conveyor 32 are operated, and the plastic bags 10 stacked on the upper portion of the stacking conveyor 31 by the before-and-after pull-out transfer unit 63 are transferred to the discharge conveyor 32. Is done. That is, a unit plastic bag discharging step is performed.

  Next, by repeatedly performing the above-described process, the plastic bags 10 stacked on the laminating apparatus unit 30 are continuously folded and discharged through the discharge conveyor 32.

  Although the embodiment of the present invention has been described in detail above, this is merely a description of an embodiment so that a person having ordinary knowledge in the technical field to which the present invention belongs can easily carry out the present invention. The technical idea of the present invention should not be construed as being limited by the description of the above embodiment.

Claims (4)

A transport unit (20) for supplying a plastic bag (10) by means of an upper roller (21) and a lower roller (22);
A laminating unit (30) in which the supplied plastic bags (10) are stacked while being folded;
A pressing device (40) for pressing an upper portion of the plastic bag (10) folded and stacked on the laminating device (30);
A fixed suction device (50) provided between the laminating device portion (30) and the lower roller (22) and sucking one side of the plastic bag (10) through a suction hole (52);
With
The laminating unit (30) is provided with a laminating conveyor (31) on which plastic bags (10) are stacked,
A discharge conveyor (32) for conveying the stacked plastic bags (10) is provided behind the stacking conveyor (31) ,
A drawer pressurizing unit (60) for conveying the plastic bags (10) stacked on the laminated conveyor (31) toward the discharge conveyor (32);
A drawer pressurizing plate (61) which is provided in the drawer pressurizing part (60) and supports the upper part of the plastic bag (10) stacked on the laminated conveyor (31) and conveys it toward the discharge conveyor (32). )When,
A drawer vertical conveying section (62) for moving the drawer pressure plate (61) up and down;
A drawer front-rear transport unit (63) for moving the drawer pressure plate (61) back and forth;
Further comprising
The drawer pressurizing plate (61) is formed so that the tip is bent downward, and a non-slip tab (611) is attached to the lower part of the bent tip. -Laminating equipment. The pressing device section (40)
The pressure raising / lowering rods (42) on both sides attached to the pressure raising / lowering portion (41) of the bottom portion so as to be movable up and down;
A pressing lateral frame (43) connected between upper portions of the pressing lifting rods (42) on both sides and having a pressing base portion (44) connected to the lower portion;
A pressure rake portion (45) for pressing an upper portion of the plastic bags (10) formed and stacked in front of or behind the pressure base portion (44);
With
The upper roller (21) and the lower roller (22) are composed of two-row rollers, and ring in each belt groove (23) formed in each upper roller (21) and lower roller (22). The apparatus for folding and laminating a plastic bag according to claim 1, wherein the belt (24) is connected and the plastic bag (10) is supplied through the ring belt (24). An alignment partition (70) formed with an alignment partition (71) for preventing the plastic bag (10) stacked on the stacking device section (30) from being disturbed rearward;
The plastic bag folding according to claim 1, wherein the alignment partition (70) is provided with an alignment operation portion (73) for moving the alignment partition (71) and the alignment frame (72) up and down. Tatami / lamination equipment.   The conveying device part (20) provided with the upper roller (21) and the lower roller (22), the laminating device part (30), the pressing device part (40) and the fixed suction device (50). 2. The plastic bag according to claim 1, wherein the plastic bag is provided on the upper side and the lower side with respect to the folding laminated frame (F), and the plastic bags (10) are folded and stacked on the upper side and the lower side. Folding and laminating equipment.

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