Anti-wrinkle winding equipment for plastic film production and use method

Abstract

The invention discloses anti-wrinkle winding equipment for plastic film production and a using method, and relates to the technical field of winding equipment.The equipment comprises a bottom plate, two guide rollers are arranged at one end of the upper end face of the bottom plate, an air swelling shaft is arranged at the other end of the bottom plate, and two supporting frames are arranged at the positions, close to the middle, of the bottom plate; a detection roller is arranged at the upper end, close to the guide roller, of the supporting frame, two retaining rollers are arranged on the supporting frame close to the air swelling shaft, and a detection assembly used for detecting wrinkles is arranged at the position, located above the detection roller, of the supporting frame. According to the film flattening device, wrinkles on a film can be detected during use through the arranged detection assembly, when the wrinkles exist, the wrinkle removing assembly is started to flatten the film, and during flattening treatment, the flattening folding plate operates along the surface of the film from inside to outside to flatten the surface of the film and remove the wrinkles on the surface of the film.

Description

Technical Field

[0001] The invention relates to the technical field of winding equipment, in particular to an anti-wrinkle winding equipment for plastic film production and a use method thereof. Background Art

[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly large share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical industry and other fields, among which food packaging accounts for the largest proportion, such as beverage packaging, frozen food packaging, steamed food packaging, fast food packaging, etc. These products have brought great convenience to people's lives.

[0003] In the production of film, the produced film needs to be rolled up. However, in the process of film production, wrinkles are inevitable, and these wrinkles will seriously affect the quality of rolling up. Although there are some ways to eliminate wrinkles in the prior art, such as the prior art CN216971476U proposes an anti-wrinkle winding device for plastic film production;

[0004] However, the current winding device with wrinkle removal function cannot remove wrinkles according to the existence of wrinkles during operation, but directly removes wrinkles on the entire rolled film. De-wrinkling the film without wrinkles not only wastes electricity but also seriously affects the winding efficiency. In view of the above problems, we provide a wrinkle-proof winding device and a method of use for plastic film production to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide an anti-wrinkle winding device for plastic film production and a method of use, so as to solve the problem in the prior art that only wrinkled films cannot be processed.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An anti-wrinkle winding device for plastic film production comprises a bottom plate, two guide rollers are arranged at one end of the upper surface of the bottom plate, an air expansion shaft is arranged at the other end of the bottom plate, two support frames are arranged near the middle of the bottom plate, a detection roller is arranged at the upper end of the support frame near the guide roller, two retaining rollers are arranged on the support frame near the air expansion shaft, and a detection component for detecting wrinkles is arranged at a position above the detection roller on the support frame;

[0008] The bottom plate is also provided with a wrinkle removal component for removing wrinkles;

[0009] The upper end surface of the bottom plate is also provided with a driving component for driving the air inflation shaft and the wrinkle removal component to operate.

[0010] As a further solution of the present invention: the detection component includes a detection rod, which is arranged at a position above the detection roller, a slide groove is provided at the upper end of the support frame, a lifting slider is slidably connected in the slide groove, both ends of the detection rod are rotatably connected to the lifting sliders, one side of the support frame is also fixedly connected to a connecting frame, a side of the connecting frame close to the support frame is fixedly connected to a mounting rod, an L-shaped action rod is rotatably connected to the mounting rod, a torsion spring is installed between the L-shaped action rod and the mounting rod, a pressure wheel is provided at the end of the L-shaped action rod, and a trigger switch cooperating with the L-shaped action rod is also provided in the middle of the upper end of the connecting frame.

[0011] As a further solution of the present invention: the wrinkle removal component includes a rotating rod, which is rotatably connected to the positions on both sides of the bottom plate respectively, and the support frame is also provided with a limit frame rotatably connected to the rotating rod, the upper end of the rotating rod is provided with a smoothing component for smoothing the film, and the lower end of the rotating rod is fixedly connected with a swing rod, the two swing rods are set in opposite directions, and a synchronous connecting rod is provided between the ends of the two swing rods, and the two ends of the synchronous connecting rod are rotatably connected to the swing rod.

[0012] As a further solution of the present invention: the smoothing component includes a fixed box, which is respectively installed on the upper end of the rotating rod at positions on both sides of the winding film, and the fixed box is slidably connected to the side close to the film with a T-shaped iron slider, and a spring is installed between the T-shaped iron slider and the inner end surface of the fixed box, and an electromagnet for attracting the T-shaped iron slider is also provided on the inner end surface of the fixed box, and the lower end of the T-shaped iron slider is fixedly connected with a smoothing folding plate.

[0013] As a further solution of the present invention: the driving component includes a driving motor, the driving motor is installed on one side of the upper end surface of the base plate, the other side of the upper end surface of the base plate is rotatably connected with a transmission shaft, an electromagnetic clutch is installed between the transmission shaft and the output shaft of the driving motor, a first transmission component for driving the smoothing folding plate to swing is provided between the transmission shaft and the rotating rod, and a second transmission component for driving the air expansion shaft to rotate is provided between the output shaft of the driving motor and the air expansion shaft.

[0014] As a further solution of the present invention: the first transmission assembly includes a rotating shaft, which is rotatably connected to the upper end surface of the base plate near the transmission shaft, and the ends of the rotating shaft opposite to the transmission shaft are fixedly connected to the first gear, and the two first gears are meshed with each other, and the end of the rotating shaft away from the first gear is fixedly connected to the rotating disk, and the upper end surface of the base plate near the rotating rod is fixedly connected to a U-shaped frame, and a rack is slidably connected to the U-shaped frame. A second gear meshing with the rack is provided at the lower end of the rotating rod on one side of the base plate, and the end of the rack close to the rotating shaft is rotatably connected to a connecting rod, and the end of the connecting rod away from the rack is rotatably connected to the rotating disk at a position deviating from the center of the circle.

[0015] As a further solution of the present invention: the second transmission assembly includes a two-speed transmission, which is installed on the upper end surface of the base plate near the pneumatic shaft, and a first belt transmission mechanism for transmission is provided between the input shaft of the two-speed transmission and the output end of the drive motor, and a second belt transmission mechanism for transmission is provided between the connecting shaft head of the pneumatic shaft and the output shaft of the two-speed transmission.

[0016] As a further solution of the present invention: the edges of the smoothing folding plate close to the film are all arc-shaped.

[0017] As a further solution of the present invention: a second travel switch is provided at one end of the U-shaped frame, a first limit switch is provided at the other end of the U-shaped frame, and a controller is also provided on the bottom plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention can detect wrinkles on the film during use by setting up a detection component. When wrinkles exist, the wrinkle removal component starts to smooth the film. During the smoothing process, the smoothing folding plate runs along the surface of the film from the inside to the outside to smooth the surface of the film and remove the wrinkles on the surface of the film. When wrinkle removal is performed, the air inflation shaft will automatically reduce the winding speed and the film movement speed to ensure the wrinkle removal effect. At the same time, the detection component can detect wrinkle problems on the surface of the film, so that the wrinkle removal component will be started only when wrinkles exist. When there is no wrinkle problem, the film is rolled up normally, which solves the problem of continuous wrinkle removal affecting the winding efficiency in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the wrinkle removal component in the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the driving component in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the detection component in the present invention.

[0024] Figure 5 It is a schematic diagram of the internal structure of the fixing box in the present invention.

[0025] Wherein: 1. bottom plate; 2. rotating rod; 3. supporting frame; 4. first belt transmission mechanism; 5. guide roller; 6. detection roller; 7. detection rod; 8. fixing box; 9. smoothing folding plate; 10. holding roller; 11. second belt transmission mechanism; 12. air expansion shaft; 13. driving motor; 14. synchronous connecting rod; 15. lifting slider; 16. first gear; 17. mounting rod; 18. pressure wheel; 19. trigger switch; 20. L-shaped action rod; 21. torsion spring; 22. connecting frame; 23. two-speed transmission; 24. swing rod; 25. T-shaped iron slider; 26. electromagnetic clutch; 27. transmission shaft; 28. rotating shaft; 29. ​​first limit switch; 30. second travel switch; 31. U-shaped frame; 32. rack; 33. second gear; 34. connecting rod; 35. rotating disk; 36. spring; 37. electromagnet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0027] See also Figure 1-Figure 5 In an embodiment of the present invention, a wrinkle-proof winding device for producing plastic film comprises a bottom plate 1, wherein two guide rollers 5 are arranged at one end of the upper end surface of the bottom plate 1, and an air-expansion shaft 12 is arranged at the other end of the bottom plate 1. Two support frames 3 are arranged near the middle of the bottom plate 1, and a detection roller 6 is arranged at the upper end of the support frame 3 near the guide roller 5, and two retaining rollers 10 are arranged on the support frame 3 near the air-expansion shaft 12. A detection component for detecting wrinkles is arranged at a position above the detection roller 6 of the support frame 3; a wrinkle removal component for eliminating wrinkles is also arranged on the bottom plate 1; a driving component for driving the air-expansion shaft 12 and the wrinkle removal component to operate is also arranged on the upper end surface of the bottom plate 1. When in use, the driving component drives the air-expansion shaft 12 to rotate to reel up the film, and then the film is detected by the detection component. When wrinkles exist on the film, the detection component is triggered to start the wrinkle removal component to smooth the surface of the film and remove the wrinkles on the surface of the film.

[0028] The detection assembly includes a detection rod 7, which is arranged above the detection roller 6. A slide groove is provided at the upper end of the support frame 3, and a lifting slider 15 is slidably connected in the slide groove. Both ends of the detection rod 7 are rotatably connected to the lifting slider 15 respectively. A connecting frame 22 is also fixedly connected to one side of the support frame 3. A mounting rod 17 is fixedly connected to the connecting frame 22 near the side of the support frame 3. An L-shaped action rod 20 is rotatably connected to the mounting rod 17. A torsion spring 21 is installed between the L-shaped action rod 20 and the mounting rod 17. A pressure wheel 18 is provided at the end, and a trigger switch 19 cooperating with the L-shaped action rod 20 is also provided in the middle of the upper end of the connecting frame 22; during detection, when there are wrinkles on the conveyed film, the wrinkles will cause the detection rod 7 to move slightly upward, and the detection rod 7 will drive the L-shaped action rod 20 to move after moving upward. Since the length of the front section of the L-shaped action rod 20 is smaller than the length of the rear end, when the front section of the L-shaped action rod 20 moves, the movement amplitude of the rear end will be greater than the movement amplitude of the front section, thereby triggering the trigger switch 19, thereby realizing the detection of film wrinkles.

[0029] The wrinkle removal component includes a rotating rod 2, which is rotatably connected to the positions on both sides of the bottom plate 1. The support frame 3 is also provided with a limit frame rotatably connected to the rotating rod 2. The upper end of the rotating rod 2 is provided with a smoothing component for smoothing the film. The lower end of the rotating rod 2 is fixedly connected with a swing rod 24. The two swing rods 24 are set in opposite directions. A synchronous connecting rod 14 is provided between the ends of the two swing rods 24, and the two ends of the synchronous connecting rod 14 are rotatably connected to the swing rod 24; the smoothing component includes a fixed box 8, which is respectively installed at the upper end of the rotating rod 2 at the positions on both sides of the winding film. The fixed box 8 is slidably connected with a T-shaped iron slider 25 on one side close to the film, and a spring is installed between the T-shaped iron slider 25 and the inner end surface of the fixed box 8 36. An electromagnet 37 for attracting the T-shaped iron slider 25 is also provided on the inner end surface of the fixed box 8. The lower end of the T-shaped iron slider 25 is fixedly connected to a smoothing folding plate 9; the edges of the smoothing folding plate 9 close to the film are all arc-shaped; when working, the driving component drives the rotating rod 2 to swing, and then the two rotating rods 2 can swing relative to each other through the set synchronous connecting rod 14. When the smoothing folding plate 9 moves from the outside to the inside, the electromagnet 37 is energized to attract the T-shaped iron slider 25 to make the smoothing folding plate 9 away from the film. At this time, the smoothing folding plate 9 does not contact the film. When the smoothing folding plate 9 moves from the inside to the outside, the electromagnet 37 loses power and the smoothing folding plate 9 contacts the surface of the film under the action of the spring 36, thereby smoothing the film. Wrinkles can be eliminated by repeating this process.

[0030] The driving assembly includes a driving motor 13, and the driving motor 13 is installed at a position on one side of the upper end surface of the base plate 1. The other side of the upper end surface of the base plate 1 is rotatably connected with a transmission shaft 27. An electromagnetic clutch 26 is installed between the transmission shaft 27 and the output shaft of the driving motor 13. A first transmission assembly for driving the smoothing folding plate 9 to swing is provided between the transmission shaft 27 and the rotating rod 2. A second transmission assembly for driving the air expansion shaft 12 to rotate is provided between the output shaft of the driving motor 13 and the air expansion shaft 12. The electromagnetic clutch 26 can be used to cut off and combine the power of the transmission shaft 27.

[0031] The second transmission component includes a two-speed transmission 23, which is installed on the upper end surface of the base plate 1 near the air shaft 12. A first belt transmission mechanism 4 for transmission is provided between the input shaft of the two-speed transmission 23 and the output end of the drive motor 13, and a second belt transmission mechanism 11 for transmission is provided between the connecting shaft head of the air shaft 12 and the output shaft of the two-speed transmission 23. When working, the drive motor 13 drives the first belt transmission mechanism 4 to operate, and the operation of the first belt transmission mechanism 4 drives the input shaft of the two-speed transmission 23 to rotate, and then the power is transmitted to the second belt transmission mechanism 11 after the two-speed transmission 23 changes speed, and then the air shaft 12 is driven to rotate through the transmission of the second belt transmission mechanism 11.

[0032] The first transmission assembly includes a rotating shaft 28, which is rotatably connected to a position on the upper end surface of the base plate 1 near the transmission shaft 27, and the ends of the rotating shaft 28 opposite to the transmission shaft 27 are fixedly connected to the first gear 16, and the two first gears 16 are meshed with each other. The end of the rotating shaft 28 away from the first gear 16 is fixedly connected to a rotating disk 35, and a U-shaped frame 31 is fixedly connected to a position on the upper end surface of the base plate 1 near the rotating rod 2, and a rack 32 is slidably connected to the U-shaped frame 31. The lower end of the rotating rod 2 on one side of the base plate 1 is provided with a second gear 33 meshing with the rack 32, and the rack 32 is close to the rotating shaft 28. One end is rotatably connected with a connecting rod 34, and the end of the connecting rod 34 away from the rack 32 is rotatably connected to the rotating disk 35 at a position offset from the center of the circle; when working, the electromagnetic clutch 26 connects and transmits the transmission shaft 27 to the output shaft of the drive motor 13, and then the transmission shaft 27 drives the first gear 16 to rotate, the rotation of the first gear 16 drives the rotating shaft 28, the rotation of the rotating shaft 28 drives the rotating disk 35 to operate, the operation of the rotating disk 35 drives the connecting rod 34, the rotation of the connecting rod 34 drives the rack 32 to reciprocate, the reciprocating motion of the rack 32 can drive the second gear 33 to swing, and the swing of the second gear 33 drives the rotating rod 2 to swing.

[0033] A second travel switch 30 is disposed at one end of the U-shaped frame 31 , a first limit switch 29 is disposed at the other end of the U-shaped frame 31 , and a controller is also disposed on the bottom plate 1 .

[0034] The working principle of the present invention is as follows: during operation, a winding drum is installed on the air expansion shaft 12, and then the driving motor 13 drives the first belt transmission mechanism 4 to operate. The operation of the first belt transmission mechanism 4 drives the input shaft of the double-speed transmission 23 to rotate, and then the power is transmitted to the second belt transmission mechanism 11 after the double-speed transmission 23 changes speed. Then, the air expansion shaft 12 can be driven to rotate through the transmission of the second belt transmission mechanism 11. The air expansion shaft 12 rotates to reel up the film. When reeling, when there are wrinkles on the conveyed film, the wrinkles will cause the detection rod 7 to move slightly upward. After the detection rod 7 moves upward, it will drive the L-shaped action rod 20 to move. Since the length of the front section of the L-shaped action rod 20 is smaller than the length of the rear end, when the front section of the L-shaped action rod 20 moves, the movement amplitude of the rear end will be greater than the movement amplitude of the front section, and then the trigger switch 19 can be triggered. After the trigger switch 19 is triggered, the double-speed transmission 23 switches to the low speed gear to reduce the reeling speed, and then the electromagnetic clutch 26 couples the transmission shaft 27 with the drive shaft 27. The output shaft of the motor 13 is connected for transmission, and then the transmission shaft 27 drives the first gear 16 to rotate, the first gear 16 rotates to drive the rotating shaft 28, the rotating shaft 28 rotates to drive the rotating disk 35 to operate, the rotating disk 35 operates to drive the connecting rod 34, the connecting rod 34 rotates to drive the rack 32 to reciprocate, the reciprocating motion of the rack 32 can drive the second gear 33 to swing, the swing of the second gear 33 drives the rotating rod 2 to swing, and then the two rotating rods 2 can be made to swing by the synchronous connecting rod 14 set The smoothing folding plate 9 performs relative swinging. When the rack 32 contacts the second stroke switch 30 and the smoothing folding plate 9 moves from the outside to the inside, the electromagnet 37 is energized to attract the T-shaped iron slider 25 to make the smoothing folding plate 9 move away from the film. At this time, the smoothing folding plate 9 is not in contact with the film. When the rack 32 contacts the first limit switch 29 and the smoothing folding plate 9 moves from the inside to the outside, the electromagnet 37 loses power and the smoothing folding plate 9 contacts the surface of the film under the action of the spring 36, thereby smoothing the film. The wrinkles can be eliminated by repeating this process.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Although this specification is described in accordance with the implementation modes, not every implementation mode includes only one technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wrinkle-proof winding device for plastic film production, comprising a bottom plate (1), characterized in that: Two guide rollers (5) are provided at one end of the upper end surface of the bottom plate (1), an air expansion shaft (12) is provided at the other end of the bottom plate (1), two support frames (3) are provided near the middle of the bottom plate (1), a detection roller (6) is provided at the upper end of the support frame (3) near the guide roller (5), two retaining rollers (10) are provided on the support frame (3) near the air expansion shaft (12), and a detection component for detecting wrinkles is provided at a position above the detection roller (6) of the support frame (3); The bottom plate (1) is also provided with a wrinkle removal component for removing wrinkles; The upper end surface of the bottom plate (1) is also provided with a driving component for driving the air inflation shaft (12) and the wrinkle removal component to operate.

2. The wrinkle-proof winding device for plastic film production according to claim 1, characterized in that: The detection assembly comprises a detection rod (7), the detection rod (7) is arranged at a position above the detection roller (6), a slide groove is provided at the upper end of the support frame (3), a lifting slider (15) is slidably connected in the slide groove, and both ends of the detection rod (7) are rotatably connected to the lifting slider (15), one side of the support frame (3) is also fixedly connected with a connecting frame (22), a side of the connecting frame (22) close to the support frame (3) is fixedly connected with a mounting rod (17), an L-shaped action rod (20) is rotatably connected to the mounting rod (17), a torsion spring (21) is installed between the L-shaped action rod (20) and the mounting rod (17), a pressure wheel (18) is provided at the end of the L-shaped action rod (20), and a trigger switch (19) cooperating with the L-shaped action rod (20) is also provided in the middle of the upper end of the connecting frame (22).

3. The wrinkle-proof winding device for plastic film production according to claim 1, characterized in that: The wrinkle removal component comprises a rotating rod (2), the rotating rod (2) being rotatably connected to positions on both sides of the bottom plate (1), the supporting frame (3) being further provided with a limit frame rotatably connected to the rotating rod (2), the upper end of the rotating rod (2) being provided with a smoothing component for smoothing the film, the lower end of the rotating rod (2) being fixedly connected with a swing rod (24), the two swing rods (24) being arranged in opposite directions, a synchronous connecting rod (14) being provided between the ends of the two swing rods (24), and the two ends of the synchronous connecting rod (14) being rotatably connected to the swing rod (24).

4. The wrinkle-proof winding device for plastic film production according to claim 3, characterized in that: The smoothing component comprises a fixed box (8), and the fixed box (8) is respectively mounted on the upper end of the rotating rod (2) at positions on both sides of the winding film. The fixed box (8) is slidably connected to a T-shaped iron slider (25) on one side close to the film. A spring (36) is installed between the T-shaped iron slider (25) and the inner end surface of the fixed box (8). An electromagnet (37) for attracting the T-shaped iron slider (25) is also provided on the inner end surface of the fixed box (8). The lower end of the T-shaped iron slider (25) is fixedly connected to a smoothing folding plate (9).

5. The wrinkle-proof winding device for plastic film production according to claim 4, characterized in that: The driving assembly comprises a driving motor (13), the driving motor (13) being mounted on one side of the upper end surface of the base plate (1), the other side of the upper end surface of the base plate (1) being rotatably connected to a transmission shaft (27), an electromagnetic clutch (26) being mounted between the transmission shaft (27) and the output shaft of the driving motor (13), a first transmission assembly for driving the smoothing folding plate (9) to swing being arranged between the transmission shaft (27) and the rotating rod (2), and a second transmission assembly for driving the air-expanding shaft (12) to rotate being arranged between the output shaft of the driving motor (13) and the air-expanding shaft (12).

6. The wrinkle-proof winding device for plastic film production according to claim 5, characterized in that: The first transmission assembly comprises a rotating shaft (28), the rotating shaft (28) being rotatably connected to a position on the upper end surface of the base plate (1) close to the transmission shaft (27), the ends of the rotating shaft (28) opposite to the transmission shaft (27) being fixedly connected to a first gear (16), the two first gears (16) being meshed with each other, the end of the rotating shaft (28) away from the first gear (16) being fixedly connected to a rotating disk (35), the upper end surface of the base plate (1) being fixedly connected to a position close to the rotating rod (2), the U-shaped frame (31) being slidably connected to a rack (32), the lower end of the rotating rod (2) on one side of the base plate (1) being provided with a second gear (33) meshing with the rack (32), the end of the rack (32) close to the rotating shaft (28) being rotatably connected to a connecting rod (34), the end of the connecting rod (34) away from the rack (32) being rotatably connected to a position of the rotating disk (35) deviating from the center of a circle.

7. The wrinkle-proof winding device for plastic film production according to claim 5, characterized in that: The second transmission assembly comprises a two-speed transmission (23), the two-speed transmission (23) being mounted on the upper end surface of the base plate (1) at a position close to the gas expansion shaft (12), a first belt transmission mechanism (4) for transmission being provided between the input shaft of the two-speed transmission (23) and the output end of the drive motor (13), and a second belt transmission mechanism (11) for transmission being provided between the connecting shaft head of the gas expansion shaft (12) and the output shaft of the two-speed transmission (23).

8. The wrinkle-proof winding device for plastic film production according to claim 4, characterized in that: The edges of the smoothing folding plate (9) close to one side of the film are all in an arc shape.

9. The wrinkle-proof winding device for plastic film production according to claim 6, characterized in that: A second travel switch (30) is provided at one end of the U-shaped frame (31), a first limit switch (29) is provided at the other end of the U-shaped frame (31), and a controller is also provided on the bottom plate (1).

10. A winding method for the wrinkle-proof winding device for plastic film production according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. During operation, a winding drum is installed on the air expansion shaft (12), and then the driving motor (13) drives the first belt transmission mechanism (4) to operate. The operation of the first belt transmission mechanism (4) drives the input shaft of the double-speed transmission (23) to rotate, and then the power is transmitted to the second belt transmission mechanism (11) after the double-speed transmission (23) changes speed. Then, the air expansion shaft (12) is driven to rotate through the second belt transmission mechanism (11), and the air expansion shaft (12) rotates to roll up the film; S2. When the film being transported has wrinkles, the wrinkles will cause the detection rod (7) to move slightly upwards. The upward movement of the detection rod (7) will drive the L-shaped action rod (20) to move. Since the length of the front section of the L-shaped action rod (20) is smaller than the length of the rear section, when the front section of the L-shaped action rod (20) moves, the movement amplitude of the rear section will be greater than the movement amplitude of the front section, thereby triggering the trigger switch (19). After the trigger switch (19) is triggered, the dual-speed transmission (23) switches to the low speed gear to reduce the winding speed. S3, then the electromagnetic clutch (26) connects the transmission shaft (27) and the output shaft of the driving motor (13) for transmission, and then the transmission shaft (27) drives the first gear (16) to rotate, the first gear (16) rotates to drive the rotating shaft (28), the rotating shaft (28) rotates to drive the rotating disk (35) to operate, the rotating disk (35) operates to drive the connecting rod (34), the connecting rod (34) rotates to drive the rack (32) to reciprocate, the reciprocating motion of the rack (32) can drive the second gear (33) to swing, the swing of the second gear (33) drives the rotating rod (2) to swing, and then through the set synchronization The connecting rod (14) can make the two rotating rods (2) swing relative to each other. When the rack (32) contacts the second travel switch (30), the smoothing folding plate (9) moves from the outside to the inside, and the electromagnet (37) is energized to attract the T-shaped iron slider (25) to make the smoothing folding plate (9) away from the film. At this time, the smoothing folding plate (9) is not in contact with the film. When the rack (32) contacts the first limit switch (29), the smoothing folding plate (9) moves from the inside to the outside, and the electromagnet (37) loses power and the smoothing folding plate (9) contacts the surface of the film under the action of the spring (36), thereby smoothing the film. In this way, wrinkles can be eliminated.

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