Anti-puncture composite film rewinding device

Abstract

The utility model provides an anti-puncture composite film rewinding device, and belongs to the field of rewinding devices, in order to solve the problem that an existing rewinding device cannot conveniently and stably position, disassemble and assemble a winding drum, the anti-puncture composite film rewinding device comprises a base, a fixing plate is welded and fixed to the top end face of the base, and a servo motor is welded and fixed to the fixing plate; a positioning frame is fixedly welded to an output shaft of the servo motor, a one-way threaded rod is rotationally connected to the fixing plate, a connecting frame is connected to the one-way threaded rod in a threaded mode, and a connecting plate is slidably connected to the interior of the connecting frame in a limited mode. According to the anti-puncture composite film winding device, by combining clamping and positioning of a clamping rod and a clamping groove, the positions of the rotating cylinders on the two driven shafts can be conveniently and stably switched, so that in the process that the rotating cylinder on one side drives the winding drums to wind the anti-puncture composite film, a worker can fix the other winding drum to the other rotating cylinder to wait for subsequent winding switching work, and the working efficiency is improved. Replacement efficiency of the winding drum can be effectively improved by using idle time.

Description

Technical Field

[0001] This utility model relates to the field of rewinding devices, and more specifically, to a puncture-resistant composite film rewinding device. Background Technology

[0002] In today's packaging materials field, puncture-resistant composite films are widely used in many industries such as food, medicine, and electronics due to their excellent puncture resistance, barrier properties, and wide applicability. With the vigorous development of various industries, the demand for puncture-resistant composite films is showing a continuous growth trend. In the production process of puncture-resistant composite films, a rewinding device is needed to rewind them for easy transportation and subsequent processing.

[0003] Existing rewinding devices have some problems in actual operation. For example, a composite film rewinding device with publication number CN222475633U can limit and correct the deviation of the composite film during the winding process. However, the deviation correction mechanism is directly set on the roll. Therefore, when the winding thickness increases during the subsequent winding process of the composite film, the deviation correction mechanism will hinder the winding work. In addition, it cannot easily and stably position and disassemble the roll during actual operation, and thus cannot easily transfer the wound composite film. It has poor practicality and low work efficiency. Therefore, we have made improvements and proposed a puncture-resistant composite film rewinding device. Utility Model Content

[0004] The purpose of this invention is to address the problems of existing rewinding devices that cannot conveniently and stably limit the position of the composite film during the winding process, and cannot conveniently and stably position and disassemble the roll.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A puncture-resistant composite film rewinding device is provided to improve the above-mentioned problems.

[0007] The application is as follows:

[0008] The device includes a base, a fixed plate welded to the top surface of the base, a servo motor welded to the fixed plate, a positioning frame welded to the output shaft of the servo motor, a one-way threaded rod rotatably connected to the fixed plate, a connecting frame threaded to the one-way threaded rod, a connecting plate slidably connected within the connecting frame, a driven shaft rotatably connected to the connecting plate, a positioning block welded to one end of the driven shaft and engaging within the positioning frame, a rotating cylinder welded to the other end of the driven shaft, a first bidirectional threaded rod rotatably connected to the center of the rotating cylinder, a sliding plate threaded to the first bidirectional threaded rod and slidably connected within the rotating cylinder, a push block welded to the sliding plate, a second spring and a guide rod welded to the rotating cylinder, a guide plate welded to the second spring, a clamping plate welded to the guide plate, the guide rod slidably connected through the guide plate, and the clamping plate slidably connected through the rotating cylinder.

[0009] As a preferred technical solution of this application, the cross-section of the positioning frame and the cross-section of the positioning block are both rectangular. A first spring is welded and fixed at the top center of the connecting frame, and a locking rod is welded and fixed at the top of the first spring. The locking rod is slidably connected to the connecting frame. The top two sides of the connecting plate are provided with locking grooves, and the bottom of the locking rod is engaged and connected to the locking groove. The driven shafts are symmetrically distributed on both sides of the connecting plate, and the locking grooves are located directly above the driven shafts.

[0010] As a preferred technical solution of this application, the driven shaft corresponds one-to-one with the rotating cylinder, the driven shaft is connected to the center of the side end of the rotating cylinder, the sliding plate is symmetrically distributed on both sides of the first bidirectional threaded rod, and the push block is symmetrically distributed on both sides of the sliding plate.

[0011] As a preferred technical solution of this application, the guide rods are symmetrically distributed on both sides inside the rotating cylinder, and the guide rods correspond one-to-one with the guide plates. The clamping plates are symmetrically distributed on both sides of the guide plates, and the cross-sections of the clamping plates and the push blocks are both right-angled triangles.

[0012] As a preferred technical solution of this application, the upper limit sliding connection of the fixed plate is a limit rod, the end cross-section of the limit rod is "T" shaped, a third spring is welded and fixed on the limit rod, the third spring is welded and fixed on the fixed plate, a pressure roller is welded and fixed on the limit rod, the length of the pressure roller is equal to the length of the rotating cylinder, and a second bidirectional threaded rod is rotatably connected to the center of the pressure roller.

[0013] As a preferred technical solution of this application, a first limiting plate is threadedly connected to the second bidirectional threaded rod. The first limiting plate is slidably connected inside the pressure roller. A fourth spring is welded and fixed inside the first limiting plate. A second limiting plate is welded and fixed to the fourth spring. The second limiting plate is slidably connected inside the first limiting plate. A drum is sleeved on the rotating cylinder. The first limiting plates are symmetrically distributed on both sides of the second bidirectional threaded rod. The second limiting plates are symmetrically distributed on both sides inside the first limiting plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] 1. Under the rotation of the first bidirectional threaded rod, the guide plates on both sides can be pushed to move stably to the side by the push block on the slide plate. Combined with the clamping plates on both sides of the guide plates, the clamping and fixing of the roll and the center positioning can be completed conveniently and stably, thereby ensuring the stability and convenience of the subsequent anti-puncture composite film winding operation. Similarly, the clamping and positioning of the roll can be released by rotating the first bidirectional threaded rod in the opposite direction, ensuring the convenience of the subsequent disassembly of the roll.

[0017] 2. By the reciprocating rotation of the set one-way threaded rod, combined with the locking and positioning of the locking rod and the locking groove, the position switching of the rotating drums on the two driven shafts can be conveniently and stably performed. Therefore, during the process of one rotating drum driving the roll to rewind the anti-puncture composite film, the operator can fix the other roll on the other rotating drum and wait for the subsequent switching and rewinding work. The idle time can effectively improve the efficiency of roll replacement, thereby effectively improving the working efficiency of the rewinding device.

[0018] 3. Under the action of the third spring and the limiting rod, the pressure roller can automatically squeeze the puncture-resistant composite film wound on the drum. At the same time, the rotation of the second bidirectional threaded rod can drive the first and second limiting plates on both sides to move towards the middle or both sides. This allows for convenient and stable squeezing and limiting of puncture-resistant composite films of different widths, effectively preventing the puncture-resistant composite film from becoming scattered or skewed during the winding process, and effectively increasing the stability and versatility of the rewinding device. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of the puncture-resistant composite film rewinding device provided in this application;

[0020] Figure 2 A schematic diagram of the connection structure between the positioning frame and the positioning block of the puncture-resistant composite film rewinding device provided in this application;

[0021] Figure 3A schematic diagram of the connection structure between the guide plate and the clamping plate of the puncture-resistant composite film rewinding device provided in this application;

[0022] Figure 4 A schematic diagram of the overall main structure of the puncture-resistant composite film rewinding device provided in this application;

[0023] Figure 5 The puncture-resistant composite film rewinding device provided in this application Figure 4 Enlarged structural diagram at point A in the middle;

[0024] Figure 6 A side view of the connecting frame structure of the puncture-resistant composite film rewinding device provided in this application;

[0025] Figure 7 A schematic diagram of the main cross-sectional structure of the rotating cylinder of the puncture-resistant composite film rewinding device provided in this application;

[0026] Figure 8 A side sectional view of the rotating cylinder structure of the puncture-resistant composite film rewinding device provided in this application;

[0027] Figure 9 A side view of the clamping plate structure of the puncture-resistant composite film rewinding device provided in this application;

[0028] Figure 10 A top view of the limiting rod structure of the puncture-resistant composite film rewinding device provided in this application;

[0029] Figure 11 This is a side sectional view of the first limiting plate of the puncture-resistant composite film rewinding device provided in this application.

[0030] The diagram shows: 1. Base; 2. Fixing plate; 3. Servo motor; 4. Positioning frame; 5. One-way threaded rod; 6. Connecting frame; 7. First spring; 8. Clamping rod; 9. Connecting plate; 10. Clamping slot; 11. Driven shaft; 12. Positioning block; 13. Rotating cylinder; 14. First double-way threaded rod; 15. Slide plate; 16. Push block; 17. Second spring; 18. Guide plate; 19. Clamping plate; 20. Guide rod; 21. Third spring; 22. Limiting rod; 23. Pressure roller; 24. Second double-way threaded rod; 25. First limiting plate; 26. Fourth spring; 27. Second limiting plate; 28. Drum. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0032] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0033] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Example 1:

[0037] like Figures 1-9 As shown, this embodiment proposes a puncture-resistant composite film rewinding device, including a base 1. A fixing plate 2 is welded and fixed to the top surface of the base 1. A servo motor 3 is welded and fixed to the fixing plate 2. A positioning frame 4 is welded and fixed to the output shaft of the servo motor 3. A one-way threaded rod 5 is rotatably connected to the fixing plate 2. A connecting frame 6 is threadedly connected to the one-way threaded rod 5. A connecting plate 9 is slidably connected within the connecting frame 6. A driven shaft 11 is rotatably connected to the connecting plate 9. A positioning block 12 is welded and fixed to one end of the driven shaft 11. The positioning block 12 is engaged within the positioning frame 4. The other end is welded and fixed with a rotating cylinder 13. The center of the rotating cylinder 13 is rotatably connected with a first bidirectional threaded rod 14. A sliding plate 15 is threadedly connected to the first bidirectional threaded rod 14. The sliding plate 15 is limited and slidably connected inside the rotating cylinder 13. A push block 16 is welded and fixed to the sliding plate 15. A second spring 17 and a guide rod 20 are welded and fixed inside the rotating cylinder 13. A guide plate 18 is welded and fixed to the second spring 17. A clamping plate 19 is welded and fixed to the guide plate 18. The guide rod 20 is slidably connected to the guide plate 18. The clamping plate 19 is slidably connected to the rotating cylinder 13.

[0038] Example 2:

[0039] The solution in Example 1 will be further described below with reference to its specific working method.

[0040] like Figure 1 , Figure 2 and Figures 4-6 As shown, in a preferred embodiment, based on the above method, the cross-section of the positioning frame 4 and the cross-section of the positioning block 12 are both rectangular. A first spring 7 is welded and fixed to the top center of the connecting frame 6, and a locking rod 8 is welded and fixed to the top of the first spring 7. The locking rod 8 is slidably connected to the connecting frame 6. The top two sides of the connecting plate 9 are provided with locking grooves 10. The bottom of the locking rod 8 is engaged and connected to the locking groove 10. The driven shafts 11 are symmetrically distributed on both sides of the connecting plate 9. The locking grooves 10 are located directly above the driven shafts 11. With the locking and positioning of the locking rod 8 and the locking grooves 10, the rotating drums 13 on the two driven shafts 11 can be conveniently and stably switched. Therefore, during the process of one rotating drum 13 driving the roll 28 to rewind the anti-puncture composite film, the operator can fix the other roll 28 on the other rotating drum 13 and wait for the subsequent switching and rewinding work. The idle time can effectively improve the replacement efficiency of the roll 28, thereby effectively improving the working efficiency of the rewinding device.

[0041] like Figure 1 , Figure 3 and Figures 7-9 As shown, in a preferred embodiment, based on the above method, the driven shaft 11 corresponds one-to-one with the rotating cylinder 13. The driven shaft 11 is connected to the center of the side end of the rotating cylinder 13. The sliding plate 15 is symmetrically distributed on both sides of the first bidirectional threaded rod 14. The push block 16 is symmetrically distributed on both sides of the sliding plate 15. The guide rod 20 is symmetrically distributed on both sides inside the rotating cylinder 13. The guide rod 20 corresponds one-to-one with the guide plate 18. The clamping plate 19 is symmetrically distributed on both sides of the guide plate 18. The cross-section of the clamping plate 19 and the cross-section of the push block 16 are both right-angled triangles. Under the rotation action of the first bidirectional threaded rod 14, the push block 16 on the sliding plate 15 can push the guide plates 18 on both sides to move stably to the side. Combined with the clamping plates 19 on both sides of the guide plate 18, the clamping and fixing and center positioning of the roll 28 can be completed conveniently and stably, thereby ensuring the stability and convenience of the subsequent anti-puncture composite film winding operation of the roll 28.

[0042] like Figure 1 , Figure 4 , Figure 10 and Figure 11As shown, in a preferred embodiment, based on the above method, the upper limit of the fixed plate 2 is further connected to the limit rod 22, the end cross-section of the limit rod 22 is "T" shaped, a third spring 21 is welded and fixed on the limit rod 22, the third spring 21 is welded and fixed on the fixed plate 2, and a pressure roller 23 is welded and fixed on the limit rod 22. The length of the pressure roller 23 is equal to the length of the rotating cylinder 13. The pressure roller 23 is located directly above one side of the rotating cylinder 13. A second bidirectional threaded rod 24 is rotatably connected to the center of the pressure roller 23. Under the action of the third spring 21 and the limit rod 22, the pressure roller 23 can drive the pressure roller 23 to automatically squeeze the puncture-resistant composite film wound on the roll 28, so as to avoid the puncture-resistant composite film from becoming scattered during the winding process.

[0043] like Figure 1 , Figure 4 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, a first limiting plate 25 is threadedly connected to the second bidirectional threaded rod 24. The first limiting plate 25 is slidably connected inside the pressure roller 23. A fourth spring 26 is welded and fixed inside the first limiting plate 25. A second limiting plate 27 is welded and fixed to the fourth spring 26. The second limiting plate 27 is slidably connected inside the first limiting plate 25. A roll 28 is sleeved on the rotating cylinder 13. The first limiting plates 25 are symmetrically distributed on both sides of the second bidirectional threaded rod 24. The second limiting plates 27 are symmetrically distributed on both sides inside the first limiting plate 25. The elastic force of the third spring 21 is greater than the elastic force of each of the fourth springs 26. By rotating the second bidirectional threaded rod 24, the first limiting plates 25 and the second limiting plates 27 on both sides can be driven to move simultaneously towards the middle or both sides. This allows for convenient and stable extrusion and limiting of puncture-resistant composite films of different widths, thereby effectively preventing the puncture-resistant composite film from becoming skewed during the winding process.

[0044] Specifically, when using this puncture-resistant composite film rewinding device: First, the operator can lift the pressure roller 23 upwards and place the roll 28 to be used on the rotating drum 13 below the pressure roller 23. Then, the operator can hold the rotating drum 13 with one hand and drive the first bidirectional threaded rod 14 on the rotating drum 13 to rotate with the other hand. Under the rotation of the first bidirectional threaded rod 14, the sliding plates 15 connected by threads on both sides can move towards the center at the same time. Under the movement of the sliding plates 15, the guide plates 18 on the guide rods 20 on both sides can be pushed to move towards the side at the same time through the inclined surface of the push block 16. Under the movement of the guide plates 18 on both sides, the clamping plates 19 on both sides of the guide plates 18 can move outwards stably. With the combined action of the inclined surfaces on the clamping plates 19 on both sides, the roll 28 can be clamped and fixed in a convenient and stable manner and the center positioning work can be carried out, ensuring that the roll 28 is located directly below the pressure roller 23, which facilitates the accuracy and stability of the subsequent limiting work of the puncture-resistant composite film.

[0045] After clamping and positioning the roll 28, the pressure roller 23 can be released. At this time, under the elastic action of the third spring 21, the pressure roller 23 can be driven to move downward through the limiting rod 22, which in turn can drive the second limiting plate 27 inside the first limiting plate 25 on both sides to move downward and fit with the roll 28. Moreover, under the elastic action of the third spring 21, the first limiting plate 25 on the pressure roller 23 can continue to move downward, which can squeeze the second limiting plate 27 into the first limiting plate 25. Then, the operator can rotate the second bidirectional threaded rod 24 on the pressure roller 23. Under the rotation of the second bidirectional threaded rod 24, the first limiting plate 25 connected by threads on both sides can be driven to move simultaneously to the middle or both sides, which can drive the second limiting plate 27 to move synchronously, thereby realizing the adjustment and limiting work of the anti-puncture composite film during the winding process.

[0046] During operation, driven by the servo motor 3, the driven shaft 11 on the positioning block 12 rotates via the positioning frame 4 on the output shaft, thereby causing the rotating drum 13 below the pressure roller 23 to rotate stably. Meanwhile, the rotating drum 13 on the other side does not rotate. Under the rotation of the rotating drum 13, the anti-puncture composite film is stably wound up via the roll 28. During winding, the second limiting plates 27 on both sides stably limit the anti-puncture composite film, preventing it from skewing during winding. Simultaneously, During the winding process, the pressure roller 23 can automatically squeeze the puncture-resistant composite film wound on the roll 28 to prevent the puncture-resistant composite film from becoming scattered during the winding process. As the thickness of the winding increases, the puncture-resistant composite film can push the pressure roller 23 to move upward automatically. The pressure roller 23, together with the third spring 21 and the limiting rod 22, can always maintain a downward squeezing state. At the same time, during the upward movement of the pressure roller 23, under the elastic action of the fourth spring 26, it can push the second limiting plate 27 to move downward automatically and always stick to the roll 28 to ensure the stability of the limiting operation.

[0047] During the winding process, while one rotating drum 13 drives the roll 28 to rotate, the operator can clamp and position another roll 28 onto the rotating drum 13 on the other side using the same operation, waiting for the subsequent roll 28 to be replaced. After the winding work is completed, the operator can rotate the one-way threaded rod 5 on the fixed plate 2. At this time, the one-way threaded rod 5 can drive the threaded connecting frame 6 to move stably away from the fixed plate 2, and then drive the positioning block 12 to move away from the positioning frame 4 through the connecting plate 9. Then, simply pull the locking rod 8 upward to move it away from the locking groove 10 on one side, and the connecting plate 9 can be pushed. Sliding inside the connecting frame 6, another rotating cylinder 13 is pushed to below the pressure roller 23. At this time, under the elastic action of the first spring 7, the locking rod 8 can be driven to move automatically downward and engage in the slot 10 on the other side of the connecting plate 9, thus completing the engagement and fixation of the connecting plate 9. Then, by rotating the one-way threaded rod 5 in the opposite direction, the positioning block 12 on the driven shaft 11 on the other side of the connecting plate 9 can be driven by the connecting frame 6 to be stably inserted into the positioning frame 4 on the output shaft of the servo motor 3. Then, under the continued driving action of the servo motor 3, the drum 28 on the other rotating cylinder 13 can be driven to rotate and rewind.

[0048] After switching between the rotating drum 13 and the reel 28, the operator can rotate the first bidirectional threaded rod 14 on the rotating drum 13 in the opposite direction, which will cause the push block 16 on the slide plate 15 to move away from the guide plate 18. At this time, under the elastic action of the second spring 17, the guide plate 18 can be automatically moved to the center to reset, which will cause the clamping plate 19 to move away from the reel 28. Then, the operator can perform stable disassembly and subsequent transfer of the reel 28 after the rewinding is completed without delaying the subsequent winding work. The operator can then repeat the above operation to complete the clamping and positioning of the new reel 28 and wait for the subsequent switching. This process is repeated, which effectively improves the working efficiency of the rewinding device.

[0049] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, as well as all technical solutions and improvements that do not depart from the spirit and scope of practicality, are covered within the scope of the claims of the present utility model.

Claims

1. A puncture-resistant composite film rewinding device comprising a base (1), characterized in that, A fixing plate (2) is welded and fixed to the top surface of the base (1). A servo motor (3) is welded and fixed to the fixing plate (2). A positioning frame (4) is welded and fixed to the output shaft of the servo motor (3). A one-way threaded rod (5) is rotatably connected to the fixing plate (2). A connecting frame (6) is threadedly connected to the one-way threaded rod (5). A connecting plate (9) is slidably connected to the connecting frame (6). A driven shaft (11) is rotatably connected to the connecting plate (9). A positioning block (12) is welded and fixed to one end of the driven shaft (11). The positioning block (12) is engaged in the positioning frame (4). A rotating cylinder (13) is welded and fixed to the other end of the driven shaft (11). The rotating cylinder (13) is rotatably connected to a first bidirectional threaded rod (14) at its center. A sliding plate (15) is threaded onto the first bidirectional threaded rod (14). The sliding plate (15) is slidably connected to the rotating cylinder (13). A push block (16) is welded and fixed onto the sliding plate (15). A second spring (17) and a guide rod (20) are welded and fixed inside the rotating cylinder (13). A guide plate (18) is welded and fixed onto the second spring (17). A clamping plate (19) is welded and fixed onto the guide plate (18). The guide rod (20) is slidably connected to the guide plate (18). The clamping plate (19) is slidably connected to the rotating cylinder (13).

2. The anti-puncture composite film rewinding device according to claim 1, characterized in that, The cross-section of the positioning frame (4) and the cross-section of the positioning block (12) are both rectangular. A first spring (7) is welded and fixed at the top center of the connecting frame (6). A locking rod (8) is welded and fixed at the top of the first spring (7). The locking rod (8) is slidably connected to the connecting frame (6). The top two sides of the connecting plate (9) are provided with locking grooves (10). The bottom of the locking rod (8) is engaged and connected to the locking groove (10). The driven shaft (11) is symmetrically distributed on both sides of the connecting plate (9). The locking groove (10) is located directly above the driven shaft (11).

3. The puncture-resistant composite film rewinding device according to claim 2, characterized in that, The driven shaft (11) corresponds one-to-one with the rotating cylinder (13). The driven shaft (11) is connected to the center of the side end of the rotating cylinder (13). The sliding plate (15) is symmetrically distributed on both sides of the first bidirectional threaded rod (14). The push block (16) is symmetrically distributed on both sides of the sliding plate (15).

4. The anti-puncture composite film rewinding device according to claim 3, characterized in that, The guide rods (20) are symmetrically distributed on both sides inside the rotating cylinder (13). The guide rods (20) correspond one-to-one with the guide plates (18). The clamping plates (19) are symmetrically distributed on both sides of the guide plates (18). The cross-section of the clamping plate (19) and the cross-section of the push block (16) are both right-angled triangles.

5. The anti-puncture composite film rewinding device according to claim 1, characterized in that, The fixed plate (2) is slidably connected to a limit rod (22). The end cross-section of the limit rod (22) is "T" shaped. A third spring (21) is welded and fixed on the limit rod (22). The third spring (21) is welded and fixed on the fixed plate (2). A pressure roller (23) is welded and fixed on the limit rod (22). The length of the pressure roller (23) is equal to the length of the rotating cylinder (13). A second bidirectional threaded rod (24) is rotatably connected to the center of the pressure roller (23).

6. The anti-puncture composite film rewinding device according to claim 5, characterized in that, The second bidirectional threaded rod (24) is threaded with a first limiting plate (25), which is slidably connected to the pressure roller (23). A fourth spring (26) is welded and fixed inside the first limiting plate (25), and a second limiting plate (27) is welded and fixed to the fourth spring (26). The second limiting plate (27) is slidably connected to the first limiting plate (25). A drum (28) is sleeved on the rotating cylinder (13). The first limiting plate (25) is symmetrically distributed on both sides of the second bidirectional threaded rod (24), and the second limiting plate (27) is symmetrically distributed on both sides inside the first limiting plate (25).

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