An automatic roll switching device for a high-barrier film coating and laminating machine

Abstract

This utility model discloses an automatic roll switching device for a high-barrier film coating and laminating machine, including a base and a roll loading assembly. The roll loading assembly includes a first unwinding roller, a second unwinding roller, a guide roller, a stop roller, and a rotating turntable. The turntable is rotatably connected to the base. The first unwinding roller, the second unwinding roller, and the guide roller are all rotatably connected to the turntable. The guide roller is located above the first unwinding roller and the second unwinding roller. The stop roller is rotatably connected to the turntable and moves back and forth toward the guide roller. The first unwinding roller is equipped with an old film roll, and the second unwinding roller is equipped with a new film roll. The film sheet of the old film roll passes above the guide roller. The advantage is that the stop roller moves toward the guide roller and abuts against the end of the film sheet of the old film roll that has been detached from the first unwinding roller. The turntable drives the first unwinding roller and the second unwinding roller to rotate counterclockwise, so that the end of the new film roll is bonded to the end of the film sheet of the old film roll, thereby completing the replacement of the film roll. The end of the film sheet is set close to the guide roller, which improves the utilization rate of the film roll and saves materials.

Description

Technical Field

[0001] This utility model relates to the technical field of membrane processing, and in particular to an automatic roll switching device for a high-barrier membrane coating and laminating machine. Background Technology

[0002] The production of coated composite films involves unwinding, coating, curing, lamination, and rewinding. Unwinding involves releasing the substrate from a roll, while rewinding involves collecting the processed substrate back into a roll. This means that after unwinding, the substrate is coated with adhesive and then laminated with other materials to form a composite film or a functional layer before being rewound. Using an automatic roll-changing device for unwinding and rewinding the substrate is one existing processing method. For example, patent publication number CN212687068U discloses a paper roll-changing device, which can also be applied to the unwinding of film substrates. This device includes a rotary roll-changing mechanism, which comprises a pair of bases and a rotating shaft rotatably connected to the bases. Two mutually perpendicular first and second rotating arms are fixed at both ends of the rotating shaft. Two unwinding rollers are fixed between the two ends of the first rotating arm. The original paper roll is placed on the unwinding rollers. There is a bracket on one side of the rotating roller changing mechanism, and a cutter is provided on the bracket. When the old paper roll needs to be replaced, the first rotating arm and the second rotating arm rotate, driving one end of the paper of the new paper roll to adhere to the moving paper, thereby connecting the old and new paper rolls. Then, the new paper roll is driven to exchange with the old paper roll. Although the above device can complete the connection between the old and new paper rolls, there is still a distance between the connection part of the old and new paper rolls and the end of the old paper roll, resulting in an overlap between the old and new paper rolls. At the same time, the thickness of the overlap part is twice that of the other parts. The overlap part cannot meet the processing requirements in the subsequent processing, and the overlap part needs to be cut off in the subsequent process, ultimately resulting in material waste.

[0003] Therefore, there is a need to provide a device that can reduce the length of the overlapping portion to address the drawback of the long overlapping portion. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an automatic roll switching device for a high-barrier film coating and laminating machine.

[0005] To achieve the above objectives, this utility model discloses an automatic roll switching device for a high-barrier film coating and laminating machine, comprising a base and a roll loading assembly. The roll loading assembly includes a first roll, a second roll, a guide roller, a stop roller, and a rotating turntable. The turntable is rotatably connected to the base. The first roll, the second roll, and the guide roller are all rotatably connected to the turntable. The guide roller is located above the first roll and the second roll. The stop roller is rotatably connected to the turntable and moves towards the guide roller to abut against it. The first roll is equipped with an old film roll, and the second roll is equipped with a new film roll. The film sheet of the old film roll passes above the guide roller. When the roll is changed and the end of the film sheet of the old film roll needs to be connected to the new film roll, the stop roller moves towards the guide roller and abuts against the film sheet. The turntable rotates to change the positions of the first roll and the second roll, so that the new film roll is bonded to the film sheet.

[0006] The turntable is provided with a guide hole that extends through the turntable along its axial direction and is parallel to the axial direction of the abutment roller. The guide hole extends gradually toward the center of the turntable, and the abutment roller moves within the guide hole.

[0007] The loading assembly further includes a telescopic cylinder, which is mounted on the turntable and drives the abutment roller to extend and retract back and forth along the axial direction of the turntable.

[0008] The telescopic cylinder is a rodless cylinder.

[0009] The winding assembly further includes a driven wheel and a rotating driving wheel. The driving wheel is connected to the driven wheel in a transmission manner. The telescopic cylinder is installed on the end face of the driven wheel. The driven wheel drives the telescopic cylinder and the abutment roller to move along the guide hole.

[0010] The guide hole is an arc-shaped extension, and the center of the driven wheel is concentric with the center of the guide hole.

[0011] The loading assembly further includes an abutment motor, which is mounted on the turntable and connected to the drive wheel.

[0012] The winding assembly includes a switching motor, a shaft, and a rotating component. The switching motor is mounted on the base and drives the shaft to rotate. The rotating component is fixedly sleeved on the shaft, and a reinforcing strip is fixedly connected between the turntable and the rotating component.

[0013] The winding assembly further includes a support wheel, which is rotatably connected to the side of the rotating component. The support wheel and the driven wheel are coaxially arranged, and the two ends of the cylinder body of the telescopic cylinder are respectively fixedly connected between the end face of the support wheel and the end face of the driven wheel.

[0014] The device also includes a cutting assembly, which further includes a cutter, a first pull roller, a second pull roller, a rotating first swing arm, a rotating second swing arm, and a rotating third swing arm. The first pull roller is rotatably connected to the swing side of the first swing arm, and the second pull roller is rotatably connected to the swing side of the second swing arm. The cutter is connected to the third swing arm, and the first, second, and third swing arms are hinged to each other. The cutter is located above the guide roller, and the first and second pull rollers are located on the upper and lower sides of the old film roll, respectively.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: When unwinding, the first roll is equipped with an old film roll that is almost empty, and the second roll is equipped with a new film roll that is fully loaded with unused film. The film sheet passes over the upper side of the guide roller from the first roll, and the abutment roller moves toward the guide roller and abuts against the end of the film sheet of the old film roll that has been separated from the first roll. The side of the guide roller and the side of the abutment roller apply abutment force to the upper and lower surfaces of the film sheet. The turntable drives the first roll and the second roll to rotate counterclockwise, so that the new film roll on the second roll is bonded to the end of the film sheet of the old film roll by the tape, thereby completing the replacement of the film roll.

[0016] Another approach involves bringing the first and second pull rollers close together and pressing the end of the old film roll against them. The first and second pull rollers then pull the end of the old film roll downwards to tighten it. The guide roller and the stop roller also pull the old film roll to tighten it in the opposite direction. The first and second pull rollers cooperate with the guide roller and the stop roller to keep the end of the film taut. The cutter cuts the taut old film roll close to the guide roller, which reduces the overlap length between the old film rolls and further reduces the overlap length of the new film roll, thus saving material.

[0017] When used for winding, the first roll is equipped with an old film roll that is almost fully loaded with film, and the second roll is equipped with an empty new film roll that has not yet collected film. The film sheet passes over the guide roller from the first roll, and the abutment roller moves toward the guide roller and abuts against the end of the film sheet of the old film roll that has been detached from the first roll. The sides of the guide roller and the abutment roller apply abutment force to the upper and lower sides of the film sheet. The cutter then cuts the film in the above manner. The turntable drives the first roll and the second roll to rotate counterclockwise, so that the second roll can continue to load film and continue to wind the film, thereby completing the replacement of the film roll. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention in its processing state;

[0019] Figure 2 This is a front view of the present invention;

[0020] Figure 3 This is a first-view structural schematic diagram of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of region A in the middle;

[0022] Figure 5 This is a structural schematic diagram of the present invention from a second perspective;

[0023] Figure 6 This is a structural schematic diagram of the present invention from a third-person perspective;

[0024] Figure 7 This is a structural schematic diagram of the present invention from a fourth perspective.

[0025] Markings: 11. Base; 12. First roll; 13. Second roll; 14. Guide roll; 15. Abutting roll; 16. Turntable; 17. Guide hole; 18. Telescopic cylinder; 19. Driven wheel; 20. Driving wheel; 21. Abutting motor; 23. Changing motor; 24. Shaft; 25. Rotating component; 26. Support wheel; 37. Cutter; 27. First pull roller; 28. Second pull roller; 29. ​​First swing arm; 30. Second swing arm; 31. Third swing arm; 32. First cutting motor; 33. Second cutting motor; 34. Third cutting motor; 35. First arm cylinder; 36. Second arm cylinder; 38. Reinforcing strip; 39. New film roll; 40. Old film roll; 41. Film sheet; 42. Adhesive tape. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, it should be noted that the orientation of some structures and components of this utility model may change during the manufacturing process. Therefore, to make the description of this utility model clearer, it will be combined with... Figure 1-7 The state shown is described in terms of orientation and structure. Figure 1-7 All of these are states in which this utility model is applicable to the unwinding process, and this utility model is based on... Figure 2 The directions shown are used to describe the location, that is, in the form of Figure 2 Identify directional words such as "front," "back," "up," and "down." Figure 1 This shows the state where the membrane roll is assembled and the membrane sheet 41 is pulled out. Figure 2-7 This shows the state where the membrane roll is assembled but the membrane sheet 41 is not pulled out.

[0027] The following is a detailed description of the solution of this utility model:

[0028] An automatic roll-switching device for a high-barrier film coating and laminating machine includes a base 11 and a roll-loading assembly. The base 11 serves as a basic support. The roll-loading assembly includes a first roll 12, a second roll 13, a guide roller 14, a stop roller 15, and a rotating turntable 16. The turntable 16 is rotatably connected to the base 11 and rotates on the base 11. The first roll 12, the second roll 13, and the guide roller 14 are all rotatably connected to the turntable 16. The first roll 12 and the second roll 13 are arranged radially along the turntable 16 and are centrally symmetrical about the center of the turntable 16. The guide roller 14 is located above the first roll 12 and the second roll 13. Figure 2 The lines connecting the guide roller 14, the first winding roller 12, and the second winding roller 13 form an equilateral triangle. The abutment roller 15 is rotatably connected to the turntable 16. The abutment roller 15 is located above the guide roller 14 and moves back and forth toward the guide roller 14. Figure 1 This utility model is applicable to the roll replacement process during unwinding. The first roll 12 is equipped with an old film roll 40 that is almost empty, and the second roll 13 is equipped with a new film roll 39 that is fully loaded with unused film. The film sheet 41 passes from the first roll 12 over the upper side of the guide roller 14. The abutment roller 15 moves toward the guide roller 14 and abuts against the end of the film sheet 41 of the old film roll 40 that has been detached from the first roll 12. The side of the guide roller 14 and the side of the abutment roller 15 apply abutment force to the upper and lower surfaces of the film sheet 41. The turntable 16 drives the first roll 12 and the second roll 13 to rotate counterclockwise, so that the new film roll 39 on the second roll 13 is bonded to the end of the film sheet 41 of the old film roll 40 by the adhesive tape 42, thereby completing the replacement of the film roll.

[0029] The processing material pulled out from the old membrane roll 40 is the membrane sheet 41.

[0030] In the prior art, the old film roll 40 adheres to the new film roll 39 while the end of the old film roll 40 is still on the first roll roller 12, resulting in a large overlap between the old film roll 40 and the new film roll 39 and wasting film rolls. Compared with the prior art, the present invention adheres to the new film roll 39 only when the end of the old film roll 40 is driven close to the guide roller 14 and the abutment roller 15, reducing the overlap between the old film roll 40 and the new film roll 39 and saving film rolls.

[0031] It should be noted that the overlapping portion of the membrane roll does not meet the processing requirements of the composite membrane, meaning that the overlapping portion of the membrane roll needs to be removed later, resulting in waste of the overlapping portion of the membrane roll.

[0032] The turntable 16 of this utility model is provided with a guide hole 17, which is provided through the turntable 16 along the axial direction. The abutment roller 15 moves in the guide hole 17, and the axial direction of the guide hole 17 is parallel to the axial direction of the abutment roller 15. The extension direction of the guide hole 17 on the turntable 16 is gradually towards the direction close to the axis of the turntable 16 in an arc shape. Through the above arrangement, the guide hole 17 plays a guiding role in the movement of the abutment roller 15.

[0033] Because the new film roll 39 needs to be bonded to the old film roll 40, the turntable 16 needs to rotate counterclockwise half a turn to complete the position swapping of the first roll 12 and the second roll 13. However, when the turntable 16 rotates counterclockwise half a turn, if... Figure 1 The guide roller 14 and the abutment roller 15 located on the lower side rotate counterclockwise, eventually rotating to the upper side. If the abutment roller 15 does not make way for the film sheet 41 of the new film roll 39, the film sheet 41 of the new film roll 39 will eventually abut against the upper side of the abutment roller 15, and the film sheet 41 of the new film roll 39 will not be located between the guide roller 14 and the abutment roller 15. To solve the above problem, the winding assembly of this utility model also includes a telescopic cylinder 18. The telescopic cylinder 18 is installed on the turntable 16, and the cylinder body of the telescopic cylinder 18 is located on the rear side of the turntable 16. The telescopic cylinder 18 drives the abutment roller 15 to extend and retract along the abutment roller 15. When the turntable 16 rotates counterclockwise to change the position of the first winding roller 12 and the second winding roller 13, the telescopic cylinder 18 drives the abutment roller 15 to retract, so as to make way for the position of the film sheet 41 of the new film roll 39 that follows the rotation.

[0034] In the above solution, the telescopic cylinder 18 drives the roller 15 to retract. In order to reduce the axial length of the equipment of this utility model, the telescopic cylinder 18 of this utility model is a rodless cylinder, which saves the axial length of the equipment of this utility model.

[0035] In order for the abutment roller 15 to move within the guide hole 17 and to abut against the guide roller 14, this utility model provides a driving scheme. Specifically, the winding assembly also includes a driven wheel 19 and a rotating driving wheel 20. Both the driving wheel 20 and the driven wheel 19 are located on the rear side of the turntable 16. The driving wheel 20 and the driven wheel 19 are connected by a transmission. A telescopic cylinder 18 is installed on the end face of the driven wheel 19. The center of the driven wheel 19 and the center of the guide hole 17 are concentric. The telescopic cylinder 18 is located outside the center of the end face of the driven wheel 19. The driving wheel 20 rotates, and the rotating driving wheel 20 drives the driven wheel 19 to rotate. When the driven wheel 19 rotates, the telescopic cylinder 18 and the abutment roller 15 are also driven to rotate, and the abutment roller 15 moves inside the guide hole 17.

[0036] Furthermore, the winding assembly also includes an abutment motor 21, which is mounted on the turntable 16 and connected to the drive wheel 20. The abutment motor 21 is located below the driven wheel 19. The abutment motor 21 drives the drive wheel 20 to rotate, and the rotating drive wheel 20 drives the driven wheel 19 to rotate. The driven wheel 19 drives the telescopic cylinder 18 and the abutment roller 15 to rotate.

[0037] The winding assembly of this utility model also includes a switching motor 23, a shaft 24, and a rotating component 25. The switching motor 23 is mounted on the base 11 and drives the shaft 24 to rotate. The turntable 16 is connected to the shaft 24. The rotating component 25 is fixedly sleeved on the shaft 24. A reinforcing strip 38 is fixedly connected between the turntable 16 and the rotating component 25. The switching motor 23 drives the shaft 24 to rotate, and the rotating shaft 24 drives the rotating component 25 and the turntable 16 to rotate synchronously. The reinforcing strip 38 is fixedly connected between the shaft 24 and the turntable 16 to improve the stability of the turntable 16 when it rotates.

[0038] The winding assembly of this utility model also includes a support wheel 26, which is rotatably connected to the front side of the rotating part 25. The support wheel 26 and the driven wheel 19 are coaxially arranged and connected by a shaft. The front and rear ends of the cylinder body of the telescopic cylinder 18 are fixedly connected between the end face of the support wheel 26 and the end face of the driven wheel 19. When rotating, the driven wheel 19 and the telescopic cylinder 18 drive the support wheel 26 to rotate synchronously, thereby improving the stability of the telescopic cylinder 18 when rotating.

[0039] This utility model also includes a cutting component. When the film roll needs to be replaced, the cutting component cooperates with the abutment roller 15 and the guide roller 14 to keep the end of the film sheet 41 of the old film roll 40 in a taut state. The cutting component then cuts the end of the film sheet 41 of the old film roll 40. The specific solution is as follows.

[0040] The cutting assembly also includes a cutter 37, a first pull roller 27, a second pull roller 28, a rotating first swing arm 29, a rotating second swing arm 30, and a rotating third swing arm 31. The first pull roller 27 is rotatably connected to the swing side of the first swing arm 29, and the second pull roller 28 is rotatably connected to the swing side of the second swing arm 30. The cutter 37 is connected to the third swing arm 31. The first swing arm 29, the second swing arm 30, and the third swing arm 31 are hinged to each other. The cutter 37 is located on the upper left side of the guide roller 14. The first pull roller 27 and the second pull roller 28 are located on the upper and lower sides of the old film roll 40, respectively. When changing rolls, the first pull roller 27 and the second pull roller 28 move closer to each other and abut the end of the film sheet 41 of the old film roll 40 against the first pull roller 27 and the second pull roller 28. Between rollers 28, the first pull roller 27 and the second pull roller 28 pull down to tighten the end of the film 41 of the old film roll 40. The guide roller 14 and the abutment roller 15 also pull the film 41 of the old film roll 40 in the opposite direction to tighten it. The first pull roller 27 and the second pull roller 28 cooperate with the guide roller 14 and the abutment roller 15 to make the end of the film 41 taut. The cutter 37 cuts the old film roll 40 in the taut state. The position where the cutter 37 cuts the film 41 of the old film roll 40 is close to the guide roller 14, which can reduce the length of the overlap between the film 41 of the old film roll 40 and further reduce the length of the film overlap. Specifically, it reduces the length of the film overlap of the new film roll 39 and saves materials.

[0041] The cutting assembly also includes a first cutting motor 32, a second cutting motor 33, and a third cutting motor 34. The first cutting motor 32, the second cutting motor 33, and the third cutting motor 34 are all mounted on the base 11. The first cutting motor 32 drives the first pull roller 27 to swing through the first swing arm 29. The second cutting motor 33 drives the second pull roller 28 to swing through the second swing arm 30. The third cutting motor 34 drives the cutter 37 to swing through the third swing arm 31. The first pull roller 27 rotates coaxially. The rotation axis of the cutter 37 is parallel to the rotation axis of the first pull roller 27 and is located on one side of it.

[0042] The first swing arm 29 and the second swing arm 30 are telescopic structures. The first swing arm 29 is equipped with a first arm cylinder 35, and the second swing arm 30 is equipped with a second arm cylinder 36. The first swing arm 29 and the second swing arm 30 are telescopically controlled by the first arm cylinder 35 and the second arm cylinder 36. When the first pull roller 27 abuts against the end of the film 41 of the old film roll 40, the first arm cylinder 35 and the second swing arm 30 respectively drive the first swing arm 29 and the second swing arm 30 to retract. Then, the first pull roller 27 cooperates with the abutting roller 15 and the guide roller 14 to increase the tension at the end of the film 41 of the old film roll 40. The increased tension of the film 41 makes it easier for the cutter 37 to cut it, reducing the risk that the film 41 cannot be cut.

[0043] This utility model is applicable to the roll change process during the winding process. The first roll 12 is equipped with an old film roll 40 that is almost fully loaded with film, and the second roll 13 is equipped with an empty new film roll 39 that has not collected film. The film sheet 41 passes from the first roll 12 over the upper side of the guide roller 14. The abutment roller 15 moves toward the guide roller 14 and abuts against the end of the film sheet 41 of the old film roll 40 that has been detached from the first roll 12. The side of the guide roller 14 and the side of the abutment roller 15 apply abutment force to the upper and lower surfaces of the film sheet 41. The cutter 37 then cuts the film in the above manner. The turntable 16 drives the first roll 12 and the second roll 13 to rotate counterclockwise, so that the second roll 13 continues to load film and continues to wind up the film, thereby completing the film roll change.

[0044] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They cannot be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. An automatic switching roll device of a high-barrier film coating compound machine, characterized by, The system includes a base (11) and a winding assembly. The winding assembly includes a first winding roller (12), a second winding roller (13), a guide roller (14), a stop roller (15), and a rotating turntable (16). The turntable (16) is rotatably connected to the base (11). The first winding roller (12), the second winding roller (13), and the guide roller (14) are all rotatably connected to the turntable (16). The guide roller (14) is located above the first winding roller (12) and the second winding roller (13). The stop roller (15) is rotatably connected to the turntable (16) and faces the guide roller (14). The first roller (12) is equipped with an old film roll (40), and the second roller (13) is equipped with a new film roll (39). The film sheet (41) of the old film roll (40) passes over the upper side of the guide roller (14). When the roll is changed and the end of the film sheet (41) of the old film roll (40) needs to be connected to the new film roll (39), the abutting roller (15) moves toward the guide roller (14) and abuts against the film sheet (41). The turntable (16) rotates to change the position of the first roller (12) and the second roller (13) so that the new film roll (39) is bonded to the film sheet (41).

2. The automatic roll switching device for a high-barrier film coating and laminating machine according to claim 1, characterized in that, The turntable (16) is provided with a guide hole (17), which is provided through the turntable (16) along the axial direction. The axial direction of the guide hole (17) is parallel to the axial direction of the abutment roller (15). The extension direction of the guide hole (17) is gradually towards the center of the turntable (16). The abutment roller (15) moves within the guide hole (17).

3. The automatic switching roll device of a high-barrier film coating composite machine according to claim 2, characterized in that, The loading assembly also includes a telescopic cylinder (18), which is mounted on the turntable (16) and drives the abutment roller (15) to extend and retract along the axial direction of the turntable (16).

4. The automatic switching roll device of a high-barrier film coating composite machine according to claim 3, characterized in that, The telescopic cylinder (18) is a rodless cylinder.

5. The automatic switching roll device of a high-barrier film coating composite machine according to claim 3, characterized in that, The winding assembly also includes a driven wheel (19) and a rotating driving wheel (20). The driving wheel (20) is connected to the driven wheel (19) in a transmission manner. The telescopic cylinder (18) is installed on the end face of the driven wheel (19). The driven wheel (19) drives the telescopic cylinder (18) and the abutment roller (15) to move along the guide hole (17).

6. The automatic switching roll device of a high-barrier film coating composite machine according to claim 5, wherein The guide hole (17) is an arc-shaped extension, and the center of the driven wheel (19) is concentric with the center of the guide hole (17).

7. The automatic switching roll device of a high-barrier film coating composite machine according to claim 5, wherein The loading assembly also includes an abutment motor (21), which is mounted on the turntable (16) and connected to the drive wheel (20).

8. The automatic switching roll device of a high-barrier film coating composite machine according to claim 5, wherein The winding assembly includes a switching motor (23), a shaft (24), and a rotating component (25). The switching motor (23) is mounted on the base (11). The switching motor (23) drives the shaft (24) to rotate. The rotating component (25) is fixedly sleeved on the shaft (24). A reinforcing strip (38) is fixedly connected between the turntable (16) and the rotating component (25).

9. The automatic switching roll device of a high-barrier film coating composite machine according to claim 8, wherein, The winding assembly also includes a support wheel (26), which is rotatably connected to the side of the rotating part (25). The support wheel (26) is coaxially arranged with the driven wheel (19). The two ends of the cylinder body of the telescopic cylinder (18) are respectively fixedly connected between the end face of the support wheel (26) and the end face of the driven wheel (19).

10. The automatic switching roll device of a high-barrier film coating composite machine according to claim 1, characterized in that, It also includes a cutting assembly, which includes a cutter (37), a first pull roller (27), a second pull roller (28), a rotating first swing arm (29), a rotating second swing arm (30), and a rotating third swing arm (31). The first pull roller (27) is rotatably connected to the swing side of the first swing arm (29), and the second pull roller (28) is rotatably connected to the swing side of the second swing arm (30). The cutter (37) is connected to the third swing arm (31). The first swing arm (29), the second swing arm (30), and the third swing arm (31) are hinged to each other. The cutter (37) is located on the upper side of the guide roller (14), and the first pull roller (27) and the second pull roller (28) are located on the upper and lower sides of the old film roll (40), respectively.

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