A device for preventing inner layer adhesion of flexible packaging film for bag making machine

Abstract

A device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine relates to the field of flexible packaging film bag making equipment. When the existing conventional flexible packaging film is used for bag making in a bag making machine, the friction coefficient of the heat-sealing layer of the flexible packaging film is too large, which causes the upper and lower sheets of the flexible packaging film to stick together after passing through the traction roller. The utility model includes a front traction unit, a separation guide roller unit, a rear traction unit and a cutting component unit. Both sides of the front traction unit, the separation guide roller unit and the rear traction unit are respectively connected to a crossbeam. A conveying guide roller is installed in front of the front traction unit. The separation guide roller unit is installed in front of the conveying guide roller and is parallel to the conveying guide roller. The rear traction unit is installed in front of the separation guide roller unit and is parallel to the separation guide roller unit. The cutting component unit is located in front of the rear traction unit, which effectively avoids the problem of poor opening of the flexible packaging film with a large and sticky heat-sealed inner layer during bag making. The utility model is used in the field of bag making machine equipment.

Description

Technical Field

[0001] The utility model relates to the field of soft packaging film bag making equipment, in particular to a device for preventing the inner layer of the soft packaging film of a bag making machine from sticking. Background Art

[0002] At present, when conventional flexible packaging films are used in bag making machines, the bag opening is often poor, that is, the heat-sealing layers of the upper and lower pieces of the bag are stuck together. This is usually caused by the large friction coefficient of the heat-sealing layer of the flexible packaging film, which makes the heat-sealing inner layer of the flexible packaging film sticky, resulting in the phenomenon that the upper and lower pieces of the flexible packaging film stick together after passing through the traction roller during bag making. In order to make the friction coefficient of the heat-sealing inner layer of the flexible packaging film meet the requirements of bag making production, the relevant processes usually control the friction coefficient during film blowing or casting of the heat-sealing inner layer of the flexible packaging film, match the tension during lamination, and control the time and temperature of the aging stage to prevent the friction coefficient from being too large. It can be said that the size of the friction coefficient is the result of the combined effect of multiple factors. For example, the food bag that needs to be cooked at high temperature has the characteristics of large glue application and high curing temperature. Large glue application and high curing temperature will consume the lubricant of the heat-sealing inner layer of the flexible packaging film, which will lead to large friction coefficient and stickiness of the heat-sealing inner layer of the flexible packaging film. Due to the stickiness of the heat-sealed inner layer, after the flexible packaging film is made into a bag, the inner layer of the bag sticks and cannot be opened naturally. Relevant personnel need to manually handle it to open it, resulting in reduced production efficiency. Summary of the invention

[0003] The utility model aims to solve the problem that when a conventional flexible packaging film is used in a bag making machine for bag making, the friction coefficient of the heat-sealing layer of the flexible packaging film is too large, resulting in the upper and lower sheets of the flexible packaging film being stuck together after passing through a traction roller during bag making. A device for preventing the inner layer of the flexible packaging film from sticking together for the bag making machine is provided, which can effectively avoid the problem of poor opening of the flexible packaging film with a too large friction coefficient of the heat-sealing inner layer being sticky during bag making, and can greatly improve the production efficiency of the bag making process.

[0004] The technical solution of the utility model is:

[0005] A device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine comprises a front traction unit, a separation guide roller unit, a rear traction unit and a cutting component unit, wherein both sides of the front traction unit, the separation guide roller unit and the rear traction unit are respectively connected to a cross beam, a conveying guide roller is installed in front of the front traction unit, the separation guide roller unit is installed in front of the conveying guide roller and is parallel to the conveying guide roller, the rear traction unit is installed in front of the separation guide roller unit and is parallel to the separation guide roller unit, and the cutting component unit is located in front of the rear traction unit; the front traction unit is installed in front of an external transverse heat sealing device of the bag making machine and is parallel to the heat sealing knife of the transverse heat sealing device of the bag making machine;

[0006] The separation guide roller unit comprises a first rotating support plate, a second rotating support plate, a cylinder support frame, a first separation guide roller, a second separation guide roller and a third cylinder;

[0007] The two ends of the first rotating support plate and the second rotating support plate are connected to the two side beams above the bag making machine, the two ends of the first separation guide roller and the second separation guide roller are respectively connected to the first rotating support plate and the second rotating support plate, one end of the third cylinder is fixedly connected to the cylinder support frame, and the other end of the third cylinder is connected to one side of the first rotating support plate through a cylinder connecting rod.

[0008] Furthermore, the front traction unit includes a front traction support frame, a first cylinder, a second cylinder, a first conveyor belt, a front traction motor, a front traction pressure roller, a front traction guide roller and a conveyor guide roller; the side plates on both sides of the front traction support are connected to the two side beams above the bag making machine, the two ends of the front traction pressure roller and the two ends of the front traction guide roller are respectively connected to the two side side plates of the front traction support frame, the front traction guide roller is placed directly below the front traction pressure roller, the front traction motor is installed below the side plate on one side of the front traction support frame, and the front traction motor and the front traction guide roller are connected together through the first conveyor belt, the first cylinder and the second cylinder are respectively placed above the two ends of the front traction pressure roller, and are connected to the two ends of the front traction pressure roller.

[0009] The height of the opposing rolling surfaces of the front traction pressure roller and the front traction guide roller is lower than the height of the axis of the conveying guide roller.

[0010] Furthermore, the cylinder support frame of the separation guide roller unit is an L-shaped structure and is located outside the first rotating support plate.

[0011] Furthermore, the rear traction unit includes a rear traction support frame, four groups of movable rear traction pressure rollers, a rear traction guide roller, a rear traction motor and a second conveyor belt; the side plates on both sides of the rear traction support frame are respectively fixedly connected to the two side beams above the bag making machine, the rear traction motor is located below the side plate on one side of the rear traction support frame, the rear traction guide roller is located directly below the movable rear traction pressure roller, and the two ends of the rear traction guide roller are fixedly connected to the side plates on both sides of the rear traction support frame, the rear traction motor is located below the side plate on one side of the rear traction support frame, and the rear traction motor is connected to the rear traction guide roller through the second conveyor belt.

[0012] Furthermore, the cutting component unit includes a fourth cylinder, an upper cutter and a lower cutter; the upper cutter and the lower cutter are staggered and located on the same horizontal plane, and the two ends of the upper cutter and the lower cutter are respectively nested in the sliding guide rails, the fourth cylinder is placed on one side of the upper cutter, and the fourth cylinder is connected to the upper cutter through a movable connecting rod.

[0013] Furthermore, a plurality of gear-shaped protrusions are arranged at equal intervals along the axial direction on the outer cylindrical circumferential surfaces of the first separation guide roller and the second separation guide roller on the separation guide roller unit.

[0014] Furthermore, the movable rear traction pressure roller on the rear traction unit is composed of a slidable cylinder and a pressure roller, and the slidable cylinder is located directly above the pressure roller.

[0015] Furthermore, the rear traction support frame on the rear traction unit has a slide rail structure, the sliding cylinder is connected to the slide rail of the top plate of the rear traction support frame, and each group of movable rear traction pressure rollers can slide freely on the sliding guide rail.

[0016] Compared with the prior art, the utility model has the following effects:

[0017] 1. The upper and lower sheets of the flexible packaging film of the utility model enter the front traction unit after passing through the transverse heat sealing device of the bag making machine. The cylinders on both sides above the front traction pressure roller provide a pressing force for the front traction pressure roller, so that the upper and lower sheets of the flexible packaging film are tightly pressed between the front traction pressure roller and the front traction guide roller. As the front traction motor drives the front traction guide roller to rotate through the first transmission belt, the upper and lower sheets of the flexible packaging film are provided with a forward traction force.

[0018] 2. The utility model is provided with a separation guide roller unit, which has a first separation guide roller and a second separation guide roller. Since the first separation guide roller and the second separation guide roller are non-cylindrical structures, their surfaces have gear-shaped protrusions, which will drive apart the upper and lower pieces of the flexible packaging film that have been bonded together, so that the upper and lower pieces of the flexible packaging film remain in a separated state.

[0019] 3. In the utility model, when the upper and lower sheets of the flexible packaging film maintained in a separated state enter the rear traction unit, the multiple groups of movable rear traction rollers in the rear traction unit have a narrow roller width, which is much lower than the width of the front traction roller. As a result, after being pressed with the rear traction guide roller, the contact area between the upper and lower sheets of the flexible packaging film is very small, which is much lower than the surface area of ​​the manufactured bag. At this time, the rear traction unit provides forward traction while avoiding adhesion of the upper and lower sheets of the flexible packaging film.

[0020] 4. The utility model installs a device on the bag making machine to prevent the inner layer of the flexible packaging film from sticking, thereby solving the problem that the inner layer of the bag made of the flexible packaging film cannot be opened naturally due to adhesion, and the relevant personnel need to manually handle it to open it, resulting in reduced production efficiency. The utility model can effectively avoid the problem of poor opening of the flexible packaging film with a large and sticky inner layer friction coefficient during bag making, and can greatly improve the production efficiency of the bag making process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure.

[0023] Figure 3 It is a schematic diagram of the structure of the front traction unit.

[0024] Figure 4 It is a structural schematic diagram of the separation guide roller unit.

[0025] Figure 5 It is a structural schematic diagram of the rear traction unit.

[0026] Figure 6 It is a structural schematic diagram of the cutting component unit.

[0027] Figure 7 It is a structural schematic diagram of a movable rear traction pressure roller.

[0028] In the figure: 1. front traction unit, 2. separation guide roller unit, 3. rear traction unit, 4. cutting component unit, 5. transmission guide roller.

[0029] 11. front traction support frame, 12. first air cylinder, 13. second air cylinder, 14. first transmission belt, 15. front traction motor, 16. front traction pressure roller, 17. front traction guide roller.

[0030] 21. A first rotating support plate, 22. A second rotating support plate, 23. A cylinder support frame, 24. A first separating guide roller, 25. A second separating guide roller, 26. A third cylinder.

[0031] 31. rear traction support frame, 32. movable rear traction pressure roller, 33. rear traction guide roller, 34. rear traction motor, 35. second conveyor belt, 32-1. slidable cylinder, 32-2. pressure roller, 32-3. sliding guide rail, 32-4. fixed lock.

[0032] 41. Fourth cylinder, 42. Upper cutter, 43. Lower cutter. DETAILED DESCRIPTION

[0033] Specific implementation method 1: Combination Figure 1 and Figure 2 The present embodiment is described. The present embodiment is a device for preventing the inner layer of a flexible packaging film from sticking together, which is used in a bag making machine. The device comprises a front traction unit 1, a separation guide roller unit 2, a rear traction unit 3 and a cutting component unit 4. Both sides of the front traction unit 1, the separation guide roller unit 2 and the rear traction unit 3 are respectively connected to a cross beam. A conveying guide roller 5 is installed in front of the front traction unit 1. The separation guide roller unit 2 is installed in front of the conveying guide roller 5 and is parallel to the conveying guide roller 5. The rear traction unit 3 is installed in front of the separation guide roller unit 2 and is parallel to the separation guide roller unit 2. The cutting component unit 4 is located in front of the rear traction unit 3.

[0034] The front traction unit 1 is installed in front of the external transverse heat sealing device of the bag making machine, and is parallel to the heat sealing knife of the transverse heat sealing device of the bag making machine. When the upper and lower pieces of the flexible packaging film pass through the transverse heat sealing device of the bag making machine, they enter the front traction unit 1; the side plates on both sides of the front traction support frame 11 of the front traction unit 1 are fixedly connected to the two side beams above the bag making machine by fixing bolts; the first rotating support plate 21 of the separation guide roller unit 2 is connected to the one side beam of the bag making machine by a movable bolt, and the second rotating support plate 22 is connected to the other side beam of the bag making machine by a movable bolt; the side plates on both sides of the rear traction support frame 31 of the rear traction unit 3 are fixedly connected to the two side beams above the bag making machine by fixing bolts.

[0035] Specific implementation method 2: Combination Figure 3The present embodiment is described. The present embodiment is a device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine. The front traction unit 1 comprises a front traction support frame 11, a first cylinder 12, a second cylinder 13, a first conveyor belt 14, a front traction motor 15, a front traction pressure roller 16, a front traction guide roller 17 and a conveyor guide roller 5; the side plates on both sides of the front traction support frame 11 are connected to the two side beams above the bag making machine, the two ends of the front traction pressure roller 16 and the two ends of the front traction guide roller 17 are respectively connected to the two side plates of the front traction support frame 11, the front traction guide roller 17 is placed directly below the front traction pressure roller 16, the front traction motor 15 is installed below the side plate on one side of the front traction support frame 11, and the front traction motor 15 and the front traction guide roller 17 are connected together through the first conveyor belt 14, the first cylinder 12 and the second cylinder 13 are respectively placed above the two ends of the front traction pressure roller 16, and are connected to the two ends of the front traction pressure roller 16.

[0036] The front traction unit 1 is installed in front of the external transverse sealing and heat sealing device of the bag making machine, and is parallel to the heat sealing knife of the heat sealing unit. The side plates on both sides of the front traction support frame 11 are fixedly connected to the two side beams above the bag making machine through fixing bolts respectively. The bearings at both ends of the front traction pressure roller 16 are connected to the side plates on both sides of the front traction support frame 11 through movable bolts respectively. The first cylinder 12 and the second cylinder 13 are respectively placed above the two ends of the front traction pressure roller 16, and are connected to the movable bolts at both ends of the front traction pressure roller 16. The front traction guide roller 17 is placed directly below the front traction pressure roller 16, and the bearings at both ends are connected to the side plates on both sides of the front traction support frame 11 through fixing bolts respectively. The front traction motor 15 is located below the side plate on one side of the front traction support frame 11, and is fixedly connected to the cross beam on one side of the bag making machine through fixing bolts. The first conveyor belt 14 connects the front traction motor 15 and the front traction guide roller 17 together. The conveying guide roller 5 is located in front of the front traction guide roller 17, and the bearings at both ends are fixedly connected to the cross beams on both sides of the bag making machine through fixing bolts respectively. When the front traction motor 15 is working, it drives the front traction guide roller 17 to rotate through the first transmission belt 14 .

[0037] The cylinders on both sides above the front traction roller 16 of the front traction unit 1 provide pressing force for the front traction roller 16, so that the upper and lower sheets of the flexible packaging film are tightly pressed between the front traction roller 16 and the front traction guide roller 17. As the front traction motor 15 drives the front traction guide roller 17 to rotate through the first conveyor belt 14, traction force is provided for the upper and lower sheets of the flexible packaging film to move forward.

[0038] Specific implementation method three: Combination Figure 4Describe this embodiment. This embodiment is a device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine. The separation guide roller unit 2 includes a first rotating support plate 21, a second rotating support plate 22, a cylinder support frame 23, a first separation guide roller 24, a second separation guide roller 25 and a third cylinder 26; both ends of the first rotating support plate 21 and the second rotating support plate 22 are connected to the cross beams on both sides above the bag making machine, both ends of the first separation guide roller 24 and both ends of the second separation guide roller 25 are connected to the first rotating support plate 21 and the second rotating support plate 22 respectively, one end of the third cylinder 26 is fixedly connected to the cylinder support frame 23, and the other end of the third cylinder 26 is connected to one side of the first rotating support plate 21 through a cylinder connecting rod, and the cylinder support frame 23 is an L-shaped structure and is located outside the first rotating support plate.

[0039] The separation guide roller unit 2 is placed in front of the conveying guide roller 5 and is parallel to the conveying guide roller 5. The first rotating support plate 21 is connected to the cross beam on one side of the bag making machine through a movable bolt, and the second rotating support plate 22 is connected to the cross beam on the other side of the bag making machine through a movable bolt. The outer cylindrical circumferential surfaces of the first separation guide roller 24 and the second separation guide roller 25 on the separation guide roller unit 2 are provided with multiple gear-shaped protrusions at equal intervals along the axial direction.

[0040] The bearings at both ends of the first separation guide roller 24 are fixedly connected to one end of the inner side of the first rotating support plate 21 and the second rotating support plate 22 by fixing bolts, respectively. The bearings at both ends of the second separation guide roller 25 are fixedly connected to the other end of the inner side of the first rotating support plate 21 and the second rotating support plate 22 by fixing bolts, respectively. The cylinder support frame 23 is located on the outer side of the first rotating support plate 21, and is connected to the cross beam on one side of the bag making machine by fixing bolts. One end of the third cylinder 26 is fixedly connected to the upper end of the cylinder support frame 23, and the other end of the third cylinder 26 is connected to one side of the first rotating support plate 21 by a cylinder connecting rod.

[0041] The outer cylindrical circumferential surfaces of the first separation guide roller 24 and the second separation guide roller 25 on the separation guide roller unit 2 are provided with a plurality of gear-shaped protrusions at equal intervals along the axial direction, which will separate the upper and lower sheets of the flexible packaging film that have been bonded together, so that the upper and lower sheets of the flexible packaging film remain separated.

[0042] Specific implementation method four: Combination Figure 5 and Figure 7The present embodiment is described. The present embodiment is a device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine. The rear traction unit 3 includes a rear traction support frame 31, four groups of movable rear traction pressure rollers 32, a rear traction guide roller 33, a rear traction motor 34 and a second conveyor belt 35. The side panels on both sides of the rear traction support frame 31 are respectively fixedly connected to the two side beams above the bag making machine, the rear traction motor 34 is located below the side panel on one side of the rear traction support frame 31, the rear traction guide roller 33 is located directly below the movable rear traction pressure roller 32, and both ends of the rear traction guide roller 33 are fixedly connected to the side panels on both sides of the rear traction support frame 31, the rear traction motor 34 is located below the side panel on one side of the rear traction support frame 31, and the rear traction motor 34 is connected to the rear traction guide roller 33 through a second conveyor belt 35.

[0043] The rear traction unit 3 is placed in front of the separation guide roller unit and is parallel to the separation guide roller unit 2. The side plates on both sides of the rear traction support frame 31 are fixedly connected to the two side beams above the bag making machine by fixing bolts respectively. The top plate of the rear traction support frame 31 has a sliding guide rail 32-3 structure. The movable rear traction pressure roller 32 is composed of a slidable cylinder 32-1 and a pressure roller 32-2. The slidable cylinder 32-1 is located directly above the pressure roller 32-2. The slidable cylinder 32-1 drives the pressure roller 32-2 to rise and fall on the rear traction support frame 31, thereby realizing the adjustment of the roller surface spacing between the pressure roller 32-2 and the rear traction guide roller 33.

[0044] The slidable cylinder 32-1 is connected to the slide rail 32-3 of the top plate of the rear traction support frame 31. The top of the slidable cylinder has a threaded rod, which passes through the gap between the two sliding guide rails 32-3, and a fixing lock 32-4 is screwed into the threaded rod, and the slidable cylinder 32-1 can be fixed by the fixing lock 32-4. Each group of movable rear traction rollers 21 can slide freely on the sliding guide rail 32-3, and the rear traction guide roller 33 is located directly below the movable rear traction roller 32. The bearings at both ends are fixedly connected to the side plates of the rear traction support frame 31 by fixing bolts. The rear traction motor 34 is located below the side plate of one side of the rear traction support frame 31, and is fixedly connected to the crossbeam on one side of the bag making machine by fixing bolts. The second transmission belt 35 connects the rear traction motor 34 and the rear traction guide roller 33 together.

[0045] When the rear traction unit 3 is working, when the upper and lower sheets of the flexible packaging film that remain in a separated state enter the rear traction unit 3, the multiple groups of movable rear traction rollers 32 in the rear traction unit 3 have a narrow roller width, which is much lower than the width of the front traction roller. As a result, after being pressed together with the rear traction guide roller 33, the contact area with the upper and lower sheets of the flexible packaging film is very small, which is much lower than the surface area of ​​the manufactured bag. At this time, the rear traction unit 3 provides forward traction while avoiding adhesion between the upper and lower sheets of the flexible packaging film.

[0046] Specific implementation method five: Combination Figure 6 The present embodiment is described. The present embodiment is a device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine. The cutting component unit 4 includes a fourth cylinder 41, an upper cutter 42 and a lower cutter 43. The upper cutter 42 and the lower cutter 43 are staggered and located on the same horizontal plane, and the two ends of the upper cutter 42 and the lower cutter 43 are respectively embedded in the sliding guide rails. The fourth cylinder 41 is placed on one side of the upper cutter 42, and the fourth cylinder 41 is connected to the upper cutter 42 by a movable connecting rod.

[0047] The two sides of the lower cutter 43 are mounted on the two sides of the side plates of the cutter mounting frame, and the inner sides of the two side plates of the cutter mounting frame are equipped with sliding guide rails, and the upper cutter 42 is driven by the fourth cylinder to move vertically up and down.

[0048] Working principle:

[0049] The upper and lower sheets of the flexible packaging film enter the front traction unit 1 after passing through the transverse heat sealing device of the bag making machine. The cylinders on both sides above the front traction pressure roller 16 provide a pressing force for the front traction pressure roller 16, so that the upper and lower sheets of the flexible packaging film are tightly pressed between the front traction pressure roller 16 and the front traction guide roller 17. As the front traction motor 15 drives the front traction guide roller 17 to rotate through the first conveyor belt 14, the upper and lower sheets of the flexible packaging film are provided with a forward traction force. At this time, if the friction coefficient of the heat-sealed inner layer of the upper and lower sheets of the flexible packaging film is too large and sticky, the flexible packaging film The heat-sealed inner layers of the upper and lower sheets will be stuck together due to the pressing force between the front traction pressure roller 16 and the front traction guide roller 17, resulting in a poor opening of the bag. At this time, the upper and lower sheets of the flexible packaging film pass through the top of the conveying guide roller 5 and enter the separation guide roller unit 2. The upper and lower sheets of the flexible packaging film first pass through the bottom of the first separation guide roller 24 and then pass through the top of the second separation guide roller 25. At this time, the third cylinder 26 applies downward pressure to the second rotating support plate 22 through the cylinder 32-2 connecting rod, which will cause the second rotating support plate 22 to drive the first The separation guide roller 24 deflects downward, and at this time, the first separation guide roller 24 applies a force in a downward direction to the upper and lower sheets of the soft packaging film passing through it. Because the outer cylindrical circumferential surfaces of the first separation guide roller 24 and the second separation guide roller 25 on the separation guide roller unit 2 are provided with a plurality of gear-shaped protrusions at equal intervals along the axial direction, the upper and lower sheets of the soft packaging film that have been bonded together will be driven apart, so that the upper and lower sheets of the soft packaging film remain in a separated state. At this time, the upper and lower sheets of the soft packaging film that remain in a separated state enter the rear traction unit 2, and the rear traction unit The multiple groups of movable rear traction rollers 32 in 3 have a narrow roller width, which is much smaller than the width of the front traction roller 16, resulting in a very small contact area between the upper and lower sheets of the flexible packaging film after being pressed together with the rear traction guide roller 33, which is much smaller than the surface area of ​​the finished bag. At this time, while the rear traction unit 3 provides a forward traction force, the upper and lower sheets of the flexible packaging film will not be adhered to each other. At this time, the upper and lower sheets of the flexible packaging film are cut by the upper and lower cutting knives of the cutting component unit 4 to produce a finished bag with good opening properties and no adhesion between the upper and lower sheets.

Claims

1. A device for preventing the inner layer of a flexible packaging film from sticking together for a bag-making machine, comprising a front traction unit (1) and a cutting component unit (4), characterized in that: It also includes a separation guide roller unit (2) and a rear traction unit (3), the left and right sides of the front traction unit (1), the separation guide roller unit (2) and the rear traction unit (3) are respectively connected to the crossbeam, a transmission guide roller (5) is installed in the front of the front traction unit (1), the separation guide roller unit (2) is installed in front of the transmission guide roller (5) and is parallel to the transmission guide roller (5), the rear traction unit (3) is installed in front of the separation guide roller unit (2) and is parallel to the separation guide roller unit (2), and the cutting component unit (4) is located in front of the rear traction unit (3); The separation guide roller unit (2) comprises a first rotating support plate (21), a second rotating support plate (22), a cylinder support frame (23), a first separation guide roller (24), a second separation guide roller (25) and a third cylinder (26); The two ends of the first rotating support plate (21) and the second rotating support plate (22) are connected to the two side beams above the bag making machine, the two ends of the first separation guide roller (24) and the two ends of the second separation guide roller (25) are respectively connected to the first rotating support plate (21) and the second rotating support plate (22), one end of the third cylinder (26) is fixedly connected to the cylinder support frame (23), and the other end of the third cylinder (26) is connected to one side of the first rotating support plate (21) through a cylinder connecting rod.

2. The device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine according to claim 1, characterized in that: The front traction unit (1) is installed in front of the external transverse heat sealing device of the bag making machine and is parallel to the heat sealing knife of the transverse heat sealing device of the bag making machine.

3. The device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine according to claim 1, characterized in that: The front traction unit (1) comprises a front traction support frame (11), a first cylinder (12), a second cylinder (13), a first transmission belt (14), a front traction motor (15), a front traction pressure roller (16), a front traction guide roller (17) and a transmission guide roller (5); The side plates on both sides of the front traction support frame (11) are connected to the two side beams above the bag making machine, the two ends of the front traction pressure roller (16) and the front traction guide roller (17) are respectively connected to the two side plates of the front traction support frame (11), the front traction guide roller (17) is placed directly below the front traction pressure roller (16), the front traction motor (15) is installed below the side plate on one side of the front traction support frame (11), and the front traction motor (15) and the front traction guide roller (17) are connected together through a first transmission belt (14), the first cylinder (12) and the second cylinder (13) are respectively placed above the two ends of the front traction pressure roller (16) and connected to the two ends of the front traction pressure roller (16), and the height of the opposite rolling surface of the front traction pressure roller (16) and the front traction guide roller (17) is lower than the axis height of the transmission guide roller (5).

4. The device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine according to claim 1, characterized in that: The cylinder support frame (23) on the separation guide roller unit is an L-shaped structure and is located outside the first rotating support plate.

5. The device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine according to claim 1, characterized in that: The rear traction unit (3) comprises a rear traction support frame (31), four groups of movable rear traction pressure rollers (32), a rear traction guide roller (33), a rear traction motor (34) and a second transmission belt (35); The side plates on both sides of the rear traction support frame (31) are respectively fixedly connected to the two side beams above the bag making machine, the rear traction motor (34) is located below the side plate on one side of the rear traction support frame (31), the rear traction guide roller (33) is located directly below the movable rear traction pressure roller (32), and both ends of the rear traction guide roller (33) are fixedly connected to the side plates on both sides of the rear traction support frame (31), the rear traction motor (34) is located below the side plate on one side of the rear traction support frame (31), and the rear traction motor (34) is connected to the rear traction guide roller (33) through a second transmission belt (35).

6. The device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine according to claim 1, characterized in that: The cutting component unit (4) comprises a fourth cylinder (41), an upper cutting knife (42) and a lower cutting knife (43); The upper cutter (42) and the lower cutter (43) are staggered and located on the same horizontal plane, and the two ends of the upper cutter (42) and the lower cutter (43) are respectively embedded in the sliding guide rails, and the fourth cylinder (41) is placed on one side of the upper cutter (42), and the fourth cylinder (41) is connected to the upper cutter (42) through a movable connecting rod.

7. The device for preventing the inner layer of a flexible packaging film from sticking together for a bag making machine according to claim 4, characterized in that: The outer cylindrical circumferential surfaces of the first separation guide roller (24) and the second separation guide roller (25) on the separation guide roller unit (2) are provided with a plurality of gear-shaped protrusions at equal intervals along the axial direction.

8. The device for preventing the inner layer of a flexible packaging film from sticking together for a bag-making machine according to claim 5, characterized in that: The movable rear traction pressure roller (32) on the rear traction unit (3) comprises a slidable cylinder (32-1) and a pressure roller (32-2); The slidable cylinder (32-1) is connected to the pressure roller (32-2), and the slidable cylinder (32-1) is installed directly above the pressure roller (32-2). The slidable cylinder (32-1) drives the pressure roller (32-2) to rise and fall on the rear traction support frame (31), thereby adjusting the roller surface spacing between the pressure roller (32-2) and the rear traction guide roller (33).

9. A device for preventing inner layer adhesion of flexible packaging film for bag making machine according to claim 5 or 8, characterized in that: The rear traction support frame (31) on the rear traction unit (3) has a slide rail structure, a slidable cylinder (32-1) is connected to a slide rail (32-3) on a top plate of the rear traction support frame (31), and each group of movable rear traction rollers (32) can slide freely on the slide rail.

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