Automatic production line for plastic packaging bags

Abstract

The invention provides an automatic plastic packaging bag production line which belongs to the field of plastic packaging bag production and comprises a conveying belt, a rotating platform, a guiding platform, a cutting platform and a cutting assembly. The cutting assembly is installed at the top of the cutting platform, and the stacking assembly is located at the top of the cutting platform. According to the plastic packaging bag cutting device, an inclined push rod and a pressing plate are arranged, when a hydraulic push rod pushes a cutting knife plate to descend, a first spring drives a moving block to move, the moving block pushes the pressing plate to descend through the inclined push rod, and the effect of pressing a plastic packaging bag downwards is achieved; therefore, the pressing plate is in contact with the plastic packaging bag before the cutting knife plate and fixes the plastic packaging bag, and the plastic packaging bag is prevented from wrinkling when the cutting knife plate cuts the plastic packaging bag.

Description

Technical Field

[0001] The invention relates to the field of plastic packaging bag production, and in particular to an automatic production line for plastic packaging bags. Background Art

[0002] The automatic production line for plastic packaging bags is a highly automated production equipment used to produce plastic packaging bags. This production line combines modern mechanical design, automatic control technology and precision manufacturing to achieve a fully automated production process from raw material supply to finished product output. There is a cutting device in the automatic production line for plastic packaging bags, which is responsible for cutting the formed plastic film into independent packaging bags.

[0003] However, in the prior art, many plastic packaging bag cutting devices have difficulty in tightening or fixing the plastic bags during the cutting process, resulting in wrinkles on the plastic bags causing the cutting surface to be uneven, thus resulting in the problem of irregular shapes of the cut plastic bags. This uneven cutting not only increases the defective rate, but also reduces the overall production efficiency. How to solve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0004] In order to make up for the above shortcomings, the present invention provides an automatic production line for plastic packaging bags, aiming to solve the problem that the cutting device in the existing production line is difficult to tighten or fix the plastic bag during the cutting process, resulting in wrinkles on the plastic bag and uneven cutting surface.

[0005] The present invention is achieved in that:

[0006] The present invention provides an automatic production line for plastic packaging bags, comprising a conveyor belt, a rotating platform, a guiding platform and a cutting platform, wherein the rotating platform is located on the right side of the conveyor belt, the guiding platform is located on the front side of the rotating platform, the cutting platform is located on the front side of the guiding platform, an infrared emitter is installed on the outer wall of the cutting platform, and further comprising:

[0007] The cutting assembly is installed on the top of the cutting platform. The existence of the cutting assembly can cut the plastic packaging bag and fix the plastic packaging bag before cutting to avoid wrinkles in the plastic packaging bag during cutting.

[0008] The stacking assembly is located on the top of the cutting platform. The presence of the stacking assembly can stack the plastic packaging bags and assist the cutting assembly in pulling and tightening the plastic packaging bags, further reducing the possibility of wrinkles on the plastic packaging bags when cutting.

[0009] Preferably, the cutting assembly includes a support rod, a hydraulic push rod, a cutting blade, a moving block, a spring 1, an inclined push rod, a pressure plate, a fixed rod and an abutment plate, the support rod is fixedly connected to the top of the cutting platform, the hydraulic push rod is fixedly connected to the outer wall of the support rod, the cutting blade is fixedly connected to the bottom output end of the hydraulic push rod, the moving block is installed on the outer wall of the output shaft of the hydraulic push rod, the spring 1 is fixedly connected to the bottom of the moving block, the inclined push rod is located on the outer wall of the moving block, the pressure plate is installed on the bottom end of the inclined push rod, the fixed rod is installed on the outer wall of the pressure plate, and the abutment plate is fixedly connected to the end of the fixed rod away from the pressure plate.

[0010] Preferably, the moving block is slidably connected to the outer wall of the output shaft of the hydraulic push rod, and the bottom of the spring 1 is fixedly connected to the top of the cutting blade.

[0011] By adopting the above technical solution, the moving block can move on the outer wall of the output shaft of the hydraulic push rod. When the cutting blade moves, the moving block can be driven to move by spring 1, and spring 1 can apply a certain pulling force to the moving block.

[0012] Preferably, movable parts are respectively installed at both ends of the inclined push rod, and the movable parts located at both ends of the inclined push rod are respectively connected to the outer wall of the moving block and the top of the pressure plate, and the horizontal height of the pressure plate is lower than the horizontal height of the cutting blade.

[0013] By adopting the above technical solution, the oblique push rod can move on the outer wall of the moving block and the outer wall of the pressure plate through the movable parts. At the same time, when the moving block moves under the action of spring 1, the pressure plate can be pushed to move by the oblique push rod. When the pressure plate descends, it will press down and fix the packaging bag before the cutting blade.

[0014] Preferably, the abutment plates are distributed on the left and right sides of the cutting blade plate and abut against each other.

[0015] By adopting the above technical solution, the contact between the abutment plates can limit the position of the pressure plate. At the same time, an inclined plate is set on the top of the abutment plate. The cutting blade can push the pressure plate to move through the inclined plate and the fixed rod, thereby tightening the plastic packaging bag.

[0016] Preferably, the stacking assembly includes a stacking bin, a bent plate, an anti-slip plate, a slider, a slide rail, a movable plate and spring 2, the stacking bin is located on the top of the cutting platform, the bent plate is installed on the outer wall of the stacking bin, the anti-slip plate is installed inside the stacking bin, the slider is fixedly connected to the outer wall of the anti-slip plate, the slide rail is opened inside the stacking bin, the movable plate is arranged inside the stacking bin, and spring 2 is fixedly connected to the outer wall of the movable plate.

[0017] Preferably, the inner wall of the stacking bin is slidably connected to the outer wall of the pressure plate, and an infrared receiver is installed on the outer wall of the bending plate, and the infrared receiver is adapted to the infrared transmitter.

[0018] By adopting the above technical solution, when the pressure plate moves under the action of the inclined push rod, it will slide inside the stacking bin and press down and fix the plastic packaging bag. The setting of the infrared receiver and the infrared transmitter can detect the position of the stacking assembly, thereby improving the accuracy of the cutting blade when cutting the plastic packaging bag.

[0019] Preferably, the anti-slide plate is slidably connected to the interior of the stacking bin, and the outer wall of the slide block is slidably connected to the inner wall of the slide rail.

[0020] By adopting the above technical solution, the plastic packaging bags are stacked on the outer wall of the anti-slip plate. The presence of the anti-slip plate can have an anti-slip and limiting effect on the plastic packaging bags. The anti-slip plate can drive the slider to slide inside the slide rail inside the stacking bin.

[0021] Preferably, one end of the movable plate passes through the stacking bin and extends to the outside of the stacking bin, the outer wall of the movable plate is slidably connected to the inner wall of the stacking bin, the end of the movable plate extending to the outside of the stacking bin is fixedly connected to the outer wall of the bent plate, and one side of the spring 2 is fixedly connected to the inner wall of the stacking bin.

[0022] By adopting the above technical solution, the stacking bin will slide on the outer wall of the movable plate under the push of the pressure plate and apply pressure to the second spring. When the pressure plate contracts, the second spring will pull the stacking bin to reset.

[0023] The beneficial effects of the present invention are:

[0024] 1. By setting an inclined push rod and a pressure plate, when the hydraulic push rod pushes the cutting blade to descend, the moving block will be driven to move through a spring, and the moving block pushes the pressure plate to descend through the inclined push rod, and has a downward pressing effect on the plastic packaging bag, and because the horizontal plane of the pressure plate is lower than the horizontal plane of the cutting blade, the pressure plate will contact the plastic packaging bag before the cutting blade, and fix the plastic packaging bag, avoiding wrinkles in the plastic packaging bag when the cutting blade cuts the plastic packaging bag; it solves the problem that the cutting device in the existing production line is difficult to tighten or fix the plastic bag during the cutting process, resulting in wrinkles on the plastic bag causing an uneven cutting surface.

[0025] 2. By setting the anti-skid plate and the sliding block, the anti-skid plate and the plastic packaging bags can be stacked in sequence inside the stacking bin. The anti-skid plate can limit the plastic packaging bags, thereby preventing the friction between the plastic packaging bags from being too smooth, resulting in poor fixing effect of the pressure plate on the plastic packaging bags.

[0026] 3. By setting a movable plate and spring 2, when the bottom of the pressure plate abuts against the top of the anti-skid plate, the outer wall of the pressure plate will contact the inner wall of the stacking bin. At this time, the cutting blade continues to descend, and the inclined push rod is driven to rotate on the top of the pressure plate by spring 1 and the movable block, so that the pressure plate moves under the action of the inclined push rod, and the pressure plate drives the stacking bin to move on the outer wall of the movable plate through the slider set on the surface of the anti-skid plate. At this time, the anti-skid plate will have a pulling and tightening effect on the plastic packaging bags stacked on the surface of the anti-skid plate, further reducing the occurrence of wrinkles during the cutting process of the plastic packaging bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of an automatic production line for plastic packaging bags provided by an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of a cutting platform of an automatic production line for plastic packaging bags provided by an embodiment of the present invention;

[0030] Figure 3 The present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0031] Figure 4 It is a schematic structural diagram of a cutting assembly of an automatic production line for plastic packaging bags provided by an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of a stacking assembly of an automatic production line for plastic packaging bags provided by an embodiment of the present invention;

[0033] Figure 6 The present invention Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0034] Figure 7 This is a schematic diagram of the internal structure of a stacking bin of an automatic production line for plastic packaging bags provided by an embodiment of the present invention;

[0035] Figure 8 The present invention Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0036] In the figure: 1. conveyor belt; 2. rotating platform; 3. guiding platform; 4. cutting platform; 401. infrared transmitter; 5. cutting assembly; 501. support rod; 502. hydraulic push rod; 503. cutting blade; 504. moving block; 505. spring one; 506. oblique push rod; 507. pressure plate; 508. fixing rod; 509. abutment plate; 6. stacking assembly; 601. stacking bin; 602. bending plate; 6021. infrared receiver; 603. anti-skid plate; 604. slider; 605. slide rail; 606. moving plate; 607. spring two. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1: Reference Figure 1-Figure 4 , an automatic production line for plastic packaging bags, comprising a conveyor belt 1, a rotating platform 2, a guide platform 3 and a cutting platform 4, wherein the rotating platform 2 is located on the right side of the conveyor belt 1, the guide platform 3 is located in front of the rotating platform 2, the cutting platform 4 is located in front of the guide platform 3, and an infrared emitter 401 is installed on the outer wall of the cutting platform 4, and further comprising:

[0039] The cutting component 5 is installed on the top of the cutting platform 4. The existence of the cutting component 5 can cut the plastic packaging bag and fix the plastic packaging bag before cutting to avoid wrinkles on the plastic packaging bag during cutting.

[0040] The stacking assembly 6 is located on the top of the cutting platform 4. The existence of the stacking assembly 6 can stack the plastic packaging bags and assist the cutting assembly 5 in pulling and tightening the plastic packaging bags, further reducing the possibility of wrinkles on the plastic packaging bags when cutting.

[0041] The cutting assembly 5 includes a support rod 501, a hydraulic push rod 502, a cutting blade 503, a moving block 504, a spring 505, an inclined push rod 506, a pressure plate 507, a fixed rod 508 and an abutment plate 509. The support rod 501 is fixedly connected to the top of the cutting platform 4, the hydraulic push rod 502 is fixedly connected to the outer wall of the support rod 501, the cutting blade 503 is fixedly connected to the bottom output end of the hydraulic push rod 502, the moving block 504 is installed on the outer wall of the output shaft of the hydraulic push rod 502, the spring 505 is fixedly connected to the bottom of the moving block 504, the inclined push rod 506 is located on the outer wall of the moving block 504, the pressure plate 507 is installed on the bottom end of the inclined push rod 506, the fixed rod 508 is installed on the outer wall of the pressure plate 507, and the abutment plate 509 is fixedly connected to the end of the fixed rod 508 away from the pressure plate 507.

[0042] It needs to be further explained that: the moving block 504 is slidably connected to the outer wall of the output shaft of the hydraulic push rod 502, and the moving block 504 can move on the outer wall of the output shaft of the hydraulic push rod 502. The bottom of the spring 1 505 is fixedly connected to the top of the cutting blade 503. When the cutting blade 503 moves, the moving block 504 can be driven to move by the spring 1 505. At the same time, the spring 1 505 can apply a certain pulling force to the moving block 504. The two ends of the inclined push rod 506 are respectively installed with movable parts. The movable parts located at the two ends of the inclined push rod 506 are respectively connected to the outer wall of the moving block 504 and the top of the pressure plate 507. The horizontal height of the pressure plate 507 is lower than the horizontal height of the cutting blade 503. The rod 506 can move on the outer wall of the moving block 504 and the outer wall of the pressure plate 507 through the movable parts. When the moving block 504 moves under the action of the spring 505, the pressure plate 507 can be pushed to move by the inclined push rod 506. When the pressure plate 507 descends, it will press down and fix the packaging bag before the cutting plate 503. The abutment plates 509 are distributed on the left and right sides of the cutting plate 503 and abut against each other. The contact between the abutment plates 509 can limit the position of the pressure plate 507. At the same time, an inclined plate is set on the top of the abutment plate 509. The cutting plate 503 can push the pressure plate 507 to move through the inclined plate and the fixed rod 508, thereby tightening the plastic packaging bag.

[0043] By setting an inclined push rod 506 and a pressure plate 507, when the hydraulic push rod 502 pushes the cutting blade 503 to descend, the moving block 504 will be driven to move through the spring 1 505, and the moving block 504 will push the pressure plate 507 to descend through the inclined push rod 506, and have a downward pressing effect on the plastic packaging bag. In addition, since the horizontal plane of the pressure plate 507 is lower than the horizontal plane of the cutting blade 503, the pressure plate 507 will contact the plastic packaging bag before the cutting blade 503, and fix the plastic packaging bag, so as to avoid wrinkles in the plastic packaging bag when the cutting blade 503 cuts the plastic packaging bag. This solves the problem that the cutting device in the existing production line is difficult to tighten or fix the plastic bag during the cutting process, resulting in wrinkles on the plastic bag causing an uneven cutting surface.

[0044] By providing the anti-slip plate 603 and the sliding block 604, the anti-slip plate 603 and the plastic packaging bags can be stacked in sequence inside the stacking bin 601, and the anti-slip plate 603 can limit the plastic packaging bags, thereby preventing the friction between the plastic packaging bags from being too smooth, resulting in poor fixing effect of the pressure plate 507 on the plastic packaging bags.

[0045] After the plastic packaging bag moves to the specified position, the hydraulic push rod 502 is controlled to operate, and the hydraulic push rod 502 drives the cutting blade 503 and the moving block 504 to move. When the moving block 504 descends, the inclined push rod 506 drives the pressing plate 507 to press down and fix the plastic packaging bag. Then the cutting blade 503 continues to descend, and the spring 1 505 increases the downward pressure of the pressing plate 507 on the plastic packaging bag until the cutting blade 503 completes the cutting of the plastic packaging bag.

[0046] Based on Example 1, please refer to Figure 1 , Figure 2 , Figure 5-Figure 8 The stacking assembly 6 includes a stacking bin 601, a bent plate 602, an anti-slip plate 603, a slider 604, a slide rail 605, a movable plate 606 and a second spring 607. The stacking bin 601 is located on the top of the cutting platform 4, the bent plate 602 is installed on the outer wall of the stacking bin 601, the anti-slip plate 603 is installed inside the stacking bin 601, the slider 604 is fixedly connected to the outer wall of the anti-slip plate 603, the slide rail 605 is opened inside the stacking bin 601, the movable plate 606 is arranged inside the stacking bin 601, and the second spring 607 is fixedly connected to the outer wall of the movable plate 606.

[0047] It needs to be further explained that: the inner wall of the stacking bin 601 is slidably connected to the outer wall of the pressure plate 507. When the pressure plate 507 moves under the action of the inclined push rod 506, it will slide inside the stacking bin 601 and press down and fix the plastic packaging bag. The outer wall of the bent plate 602 is installed with an infrared receiver 6021. The infrared receiver 6021 is adapted to the infrared transmitter 401. The setting of the infrared receiver 6021 and the infrared transmitter 401 can detect the position of the stacking assembly 6, thereby improving the accuracy of the cutting blade 503 in cutting the plastic packaging bag. The anti-skid plate 603 is slidably connected to the inside of the stacking bin 601, and the plastic packaging bags are stacked on the outer wall of the anti-skid plate 603. The existence of the anti-skid plate 603 can play a role in preventing the plastic packaging bags from slipping. The outer wall of the slider 604 is slidably connected to the inner wall of the slide rail 605, and the anti-slide plate 603 can drive the slider 604 to slide inside the slide rail 605 inside the stacking bin 601. One end of the movable plate 606 passes through the stacking bin 601 and extends to the outside of the stacking bin 601. The outer wall of the movable plate 606 is slidably connected to the inner wall of the stacking bin 601. The end of the movable plate 606 extending to the outside of the stacking bin 601 is fixedly connected to the outer wall of the bent plate 602, and one side of the spring 2 607 is fixedly connected to the inner wall of the stacking bin 601. Under the push of the pressure plate 507, the stacking bin 601 will slide on the outer wall of the movable plate 606 and apply pressure to the spring 2 607. When the pressure plate 507 contracts, the spring 2 607 will pull the stacking bin 601 to reset.

[0048] By setting a movable plate 606 and a spring 2 607, when the bottom of the pressing plate 507 abuts against the top of the anti-slip plate 603, the outer wall of the pressing plate 507 will contact the inner wall of the stacking bin 601. At this time, the cutting blade 503 continues to descend, and the inclined push rod 506 is driven to rotate on the top of the pressing plate 507 by the spring 1 505 and the moving block 504, so that the pressing plate 507 moves under the action of the inclined push rod 506. The pressing plate 507 drives the stacking bin 601 to move on the outer wall of the movable plate 606 through the slider 604 set on the surface of the anti-slip plate 603. At this time, the anti-slip plate 603 will have a pulling and tightening effect on the plastic packaging bags stacked on the surface of the anti-slip plate 603, further reducing the occurrence of wrinkles during the cutting process of the plastic packaging bags.

[0049] After the stacking bin 601 is moved to a suitable position, the hydraulic push rod 502 is started and pushes the pressure plate 507 to contact the packaging bag through the moving block 504. The hydraulic push rod 502 is continuously started and the moving block 504 is continuously lowered under the action of the spring 1 505. At this time, the pressure plates 507 on both sides will gradually move away from each other under the action of the inclined push rod 506 and the moving block 504 in the descending state. At this time, the pressure plate 507 will push the stacking bin 601 to move on the outer wall of the moving plate 606 and cooperate with the anti-slip plate 603 to tighten the plastic packaging bag until the cutting blade 503 completes the cutting of the plastic packaging bag.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic production line for plastic packaging bags, comprising a conveyor belt (1), a rotating platform (2), a guide platform (3) and a cutting platform (4), wherein the rotating platform (2) is located on the right side of the conveyor belt (1), the guide platform (3) is located in front of the rotating platform (2), the cutting platform (4) is located in front of the guide platform (3), and an infrared emitter (401) is installed on the outer wall of the cutting platform (4), characterized in that: Also includes: A cutting assembly (5), wherein the cutting assembly (5) is mounted on the top of the cutting platform (4); the existence of the cutting assembly (5) can cut the plastic packaging bag and fix the plastic packaging bag before cutting to prevent wrinkles from appearing on the plastic packaging bag during cutting; A stacking assembly (6) is located on the top of the cutting platform (4). The presence of the stacking assembly (6) can stack the plastic packaging bags and assist the cutting assembly (5) in pulling and tightening the plastic packaging bags, thereby further reducing the possibility of wrinkles on the plastic packaging bags when cutting.

2. The automatic production line for plastic packaging bags according to claim 1 is characterized by: The cutting assembly (5) comprises a support rod (501), a hydraulic push rod (502), a cutting blade (503), a moving block (504), a spring (505), an inclined push rod (506), a pressure plate (507), a fixed rod (508) and an abutment plate (509), wherein the support rod (501) is fixedly connected to the top of the cutting platform (4), the hydraulic push rod (502) is fixedly connected to the outer wall of the support rod (501), and the cutting blade (503) is fixedly connected to the outer wall of the hydraulic push rod (502). At the bottom output end, the moving block (504) is installed on the outer wall of the output shaft of the hydraulic push rod (502), the spring 1 (505) is fixedly connected to the bottom of the moving block (504), the inclined push rod (506) is located on the outer wall of the moving block (504), the pressure plate (507) is installed on the bottom end of the inclined push rod (506), the fixed rod (508) is installed on the outer wall of the pressure plate (507), and the abutment plate (509) is fixedly connected to one end of the fixed rod (508) away from the pressure plate (507).

3. The automatic production line for plastic packaging bags according to claim 2 is characterized by: The moving block (504) is slidably connected to the outer wall of the output shaft of the hydraulic push rod (502), and the bottom of the spring 1 (505) is fixedly connected to the top of the cutting blade (503).

4. The automatic production line for plastic packaging bags according to claim 3 is characterized by: Movable parts are respectively installed at both ends of the inclined push rod (506), and the movable parts located at both ends of the inclined push rod (506) are respectively connected to the outer wall of the moving block (504) and the top of the pressing plate (507), and the horizontal height of the pressing plate (507) is lower than the horizontal height of the cutting blade (503).

5. The automatic production line for plastic packaging bags according to claim 4 is characterized by: The abutment plates (509) are distributed on the left and right sides of the cutting blade plate (503) and abut against each other.

6. The automatic production line for plastic packaging bags according to claim 1, characterized in that: The stacking assembly (6) comprises a stacking bin (601), a bent plate (602), an anti-slip plate (603), a slider (604), a slide rail (605), a movable plate (606) and a second spring (607); the stacking bin (601) is located on the top of the cutting platform (4); the bent plate (602) is installed on the outer wall of the stacking bin (601); the anti-slip plate (603) is installed inside the stacking bin (601); the slide rail (605) is opened inside the stacking bin (601); the movable plate (606) is arranged inside the stacking bin (601); and the second spring (607) is fixedly connected to the outer wall of the movable plate (606).

7. The automatic production line for plastic packaging bags according to claim 6, characterized in that: The inner wall of the stacking bin (601) is slidably connected to the outer wall of the pressing plate (507), and an infrared receiver (6021) is installed on the outer wall of the bending plate (602), and the infrared receiver (6021) is adapted to the infrared transmitter (401).

8. The automatic production line for plastic packaging bags according to claim 7, characterized in that: The anti-slide plate (603) is slidably connected to the interior of the stacking bin (601), and the outer wall of the sliding block (604) is slidably connected to the inner wall of the sliding rail (605).

9. The automatic production line for plastic packaging bags according to claim 8, characterized in that: One end of the movable plate (606) passes through the stacking bin (601) and extends to the outside of the stacking bin (601); the outer wall of the movable plate (606) is slidably connected to the inner wall of the stacking bin (601); one end of the movable plate (606) extending to the outside of the stacking bin (601) is fixedly connected to the outer wall of the bent plate (602); and one side of the spring 2 (607) is fixedly connected to the inner wall of the stacking bin (601).

Images