Winding device for COF composite film and using method of winding device

Abstract

The invention discloses a winding device for a COF composite film and a using method thereof.The winding device comprises a base, a support fixedly connected to the top of the base, a winding wheel in transmission connection to the inner side of the support and a film hung on the surface of the winding wheel, the inner side of the support is movably connected with a shaft rod through a bearing, and the winding wheel is fixedly connected to the surface of the shaft rod; the outer end of the shaft rod penetrates through the support and extends to the outer side of the support, a swing rod arranged on the surface of the shaft rod in a sleeving mode is arranged on the outer side of the support, the side, away from the shaft rod, of the swing rod is movably connected with a tensioning roller through a bearing, the film is hung on the surface of the tensioning roller, and a transmission structure is arranged at the top of the base. Through the support fixedly connected to the base, the winding wheel in transmission connection and the thin film hung on the surface of the winding wheel, the winding function of the COF composite film is achieved, and particularly, through the design of the shaft rod and the tensioning roller which are movably connected through the bearing, a foundation is provided for tension control of the thin film.

Description

Technical Field

[0001] The invention relates to the technical field of COF composite film production, in particular to a winding device for a COF composite film and a use method thereof. Background Art

[0002] COF composite membrane is a composite film that combines the properties of covalent organic framework (COF) materials. Its main components are COF materials and other materials composited with it. COF materials have highly ordered structures and excellent physical and chemical properties, such as high porosity, good optical and electrical properties, etc. COF materials have an ordered porous structure, which makes the composite membrane have a higher specific surface area and porosity, which is conducive to enhancing adsorption performance and separation effect. After processing, it needs to be stored by winding.

[0003] According to the patent application number published on the China Patent Network, it is 202021939449.1, and the patent name is: A composite film winding device, including a base and a winding roller, two sets of frames are fixedly arranged opposite to each other on the top of the base, and a motor is fixedly arranged on the side close to the two sets of frames by bolts, and the motor shaft of the motor is fixedly connected with a rotating shaft, and a slide groove is provided in the support block, and a slider is slidably connected in the slide groove, and the slider is fixedly connected with an adjustment block. The composite film winding device is provided with a slide groove in the support block for connecting the slider, so that the slider can be used to move the position of the adjustment block, and the adjustment block and the fixed block are fixedly connected through the first perforation, the second perforation and the screw, so that the motor can drive the synchronous rotation of the rotating shaft, the support block, the adjustment block, the fixed block and the winding roller, and then the composite film can be wound through the paper tube, and the composite film can be prevented from detaching from the paper tube by the limit ring. The composite film winding device is easy to use, and the winding roller and the paper tube are easy to disassemble and assemble, which can effectively reduce the workload of the staff and has high practicality.

[0004] However, the structure of existing winding equipment is relatively simple. The COF composite film is prone to relax inward during the winding process, and wrinkles are easily formed on the film. These wrinkles not only affect the appearance of the film, but may also reduce its physical properties, such as tensile strength and wear resistance. The relaxation phenomenon will cause uneven tension distribution of the film during the winding process, thereby affecting the tightness and uniformity of the film after winding.

[0005] Therefore, it is necessary to design and modify the winding device for the COF composite film and the method of using the same. Summary of the invention

[0006] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present invention is to provide a winding device for COF composite film and a method of using the same, which has the advantage of ensuring the winding tension and solves the problem that the structure of the existing winding equipment is relatively simple, and the COF composite film is prone to relax inward during the winding process, and wrinkles are easily formed on the film material. These wrinkles not only affect the appearance of the film material, but also may reduce its physical properties, such as tensile strength, wear resistance, etc. The relaxation phenomenon will cause uneven tension distribution of the film material during the winding process, thereby affecting the tightness and uniformity of the film material after winding.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a winding device for a COF composite film and a method for using the same, comprising a base;

[0008] A bracket fixedly connected to the top of the base;

[0009] A winding wheel is connected to the inner side of the bracket;

[0010] A film hung on the surface of the winding wheel;

[0011] The inner side of the bracket is movably connected with a shaft rod via a bearing, the winding wheel is fixedly connected to the surface of the shaft rod, the outer end of the shaft rod passes through the bracket and extends to the outside of the bracket, the outer side of the bracket is provided with a rocker arm sleeved on the surface of the shaft rod, the side of the rocker arm away from the shaft rod is movably connected with a tensioning roller via a bearing, the film is hung on the surface of the tensioning roller, and a transmission structure is provided on the top of the base, and the transmission structure can drive the rocker arm to swing.

[0012] As a preferred embodiment of the present invention, the transmission structure includes a support frame fixedly connected to the top of the base, a screw rod is movably connected to the interior of the support frame through a bearing, a transmission motor for driving the screw rod to rotate is fixedly connected to the interior of the support frame, a transmission frame is threadedly connected to the surface of the screw rod, push rods are fixedly connected on both sides of the transmission frame, the push rods extend away from a side of the transmission frame to the interior of a rocker arm, and the rocker arm is slidably connected to the push rod.

[0013] As a preferred embodiment of the present invention, guide rods located on both sides of the screw rods are fixedly connected to the interior of the support frame, and the transmission frame is sleeved on the surfaces of the guide rods and is slidably connected to the guide rods.

[0014] As a preferred embodiment of the present invention, the top of the swing rod is fixedly connected to an extension rod, the side of the extension rod away from the swing rod is fixedly connected to a vertical plate, the side of the vertical plate away from the extension rod is movably connected to a transmission rod through a bearing, the bottom end of the transmission rod is fixedly connected to a conveying wheel, the conveying wheel can push the outer edge of the film to move outward during rotation, the bottom of the conveying wheel contacts the surface of the film, and the outer end of the extension rod is provided with a linkage structure, which can utilize the torque of the shaft rod.

[0015] As a preferred embodiment of the present invention, the linkage structure includes pulleys respectively connected to the outside of the shaft rod and the extension rod, and a belt is sleeved on the surface of the pulley. The surface of the belt close to the shaft rod and the surface of the transmission rod are fixedly connected with a helical gear, and the teeth on the surface of the helical gear are meshed with each other.

[0016] As a preferred embodiment of the present invention, a cross bar is fixedly connected to the top of the bracket, a connecting rod is movably connected to the side of the cross bar away from the bracket via a pin, and an end of the connecting rod away from the cross bar is movably connected to a lifting roller via a pin, and the film is hung on the surface of the lifting roller.

[0017] As a preferred embodiment of the present invention, a force-bearing rod is fixedly connected to one end of the connecting rod close to the cross rod, and the force-bearing rod extends to the outside of the transmission frame on a side away from the connecting rod. The push rod on the surface of the transmission frame can contact the surface of the force-bearing rod and use the push rod to squeeze the force-bearing rod to swing during the descent of the transmission frame.

[0018] As a preferred embodiment of the present invention, the winding device for COF composite film and the use method thereof include the following steps:

[0019] Initial preparation: Fix one end of the COF composite film on the winding wheel to ensure that the film is flat and firmly connected. Hang the other end of the film on the tensioning roller and adjust the initial position of the tensioning roller so that the film has a certain tension but not too tight. Start the transmission motor and start to rotate. This rotation is the initial power source for the winding process.

[0020] Adjustment of tension roller position: The rotation of the transmission motor drives the screw to start rotating. The rotation of the screw drives the transmission frame to move up and down in the support frame through the threaded connection. As the transmission frame moves, the push rod also moves. The movement direction of the push rod determines the swing direction of the swing rod. When the transmission frame rises, the push rod pushes the swing rod, so that the tension roller is close to the winding wheel, and the film tension is reduced;

[0021] Film flatness control: The shaft rotates under the drive of the winding wheel, generating torque, which is transmitted to the pulley outside the extension rod through the pulley and belt, and then drives the transmission rod and the conveying wheel to rotate. When the conveying wheel rotates, its bottom contacts the surface of the film, pushing the outer edge of the film to move outward. This movement process ensures that the film remains flat during the winding process, preventing the occurrence of wrinkles and accumulation;

[0022] The lifting roller descends: when the transmission frame descends to a certain extent, the push rod will squeeze the force rod, and the squeezing of the force rod will cause the connecting rod to swing, and then the lifting roller will descend. The descent of the lifting roller helps to better control the winding speed and tension of the film. As the thickness of the film increases, the descent of the lifting roller can ensure the appropriate distance between the film and the winding wheel, preventing excessive accumulation or relaxation of the film.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention realizes the winding function of the COF composite film through a bracket fixedly connected to the base, a winding wheel connected by transmission, and a film hung on the surface of the winding wheel. In particular, the design of the shaft rod and the tensioning roller movably connected by the bearing provides a basis for the tension control of the film.

[0025] 2. The present invention realizes precise control of the rocker arm through the design of the transmission structure, including a support frame, a screw rod, a transmission motor, a transmission frame and a push rod. The rotation of the transmission motor can drive the screw rod and the transmission frame to move up and down, and then the push rod can push the rocker arm to swing, adjust the position of the tensioning roller, and thus realize precise control of the film tension.

[0026] 3. The present invention increases the stability of the transmission frame through the design of the guide rod, preventing it from rotating or deviating on the screw rod. The transmission frame is sleeved on the guide rod and slidably connected with the guide rod, ensuring the stability and accuracy of the transmission frame during the up and down movement.

[0027] 4. The present invention realizes the pushing of the outer edge of the film by the conveying wheel through the design of the extension rod and the conveying wheel, especially through the movable connection between the transmission rod and the extension rod, which not only helps to flatten the film during the winding process, but also prevents the film from being too thick or wrinkled on the winding wheel.

[0028] 5. The present invention makes full use of the torsion of the shaft through the design of the linkage structure, and converts the rotation of the shaft into the rotation of the conveying wheel through the transmission of the pulley, belt and bevel gear, which not only improves the energy utilization efficiency, but also coordinates the rotation of the conveying wheel with the adjustment of the tensioning roller, further improving the winding quality and efficiency.

[0029] 6. The design of the lifting roller of the present invention helps to better control the winding speed and tension of the film. As the thickness of the film increases, the lifting roller gradually descends through the action of the connecting rod and the force-bearing rod, thereby maintaining an appropriate distance between the film and the winding wheel and preventing excessive accumulation or relaxation of the film.

[0030] 7. The present invention adopts the design of the stress rod so that the transmission frame can squeeze the stress rod during the descent process, and then drive the lifting roller to descend through the connecting rod, which not only simplifies the control mechanism of the lifting roller, but also improves the compactness and reliability of the entire device. At the same time, the contact between the stress rod and the push rod also ensures that the timing and amplitude of the descent of the lifting roller match the requirements of film winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0033] Figure 3 It is a left-side structural schematic diagram of the present invention;

[0034] Figure 4 It is a schematic diagram of the local structure of the present invention;

[0035] Figure 5 It is a schematic diagram of the partial structure of the present invention;

[0036] Figure 6 For the present invention Figure 5 Enlarged structural diagram at A in the middle.

[0037] In the figure: 1. base; 2. bracket; 3. winding wheel; 4. film; 5. shaft; 6. rocker; 7. tensioning roller; 8. transmission structure; 9. support frame; 10. screw; 11. transmission motor; 12. transmission frame; 13. push rod; 14. guide rod; 15. extension rod; 16. vertical plate; 17. transmission rod; 18. conveying wheel; 19. linkage structure; 20. pulley; 21. belt; 22. bevel gear; 23. cross bar; 24. connecting rod; 25. lifting roller; 26. force-bearing rod. DETAILED DESCRIPTION

[0038] 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.

[0039] like Figures 1 to 6 As shown, the present invention provides a winding device for a COF composite film and a method of using the same, comprising a base 1;

[0040] A bracket 2 fixedly connected to the top of the base 1;

[0041] A winding wheel 3 is connected to the inner side of the bracket 2;

[0042] A film 4 hung on the surface of the winding wheel 3;

[0043] The inner side of the bracket 2 is movably connected with a shaft rod 5 through a bearing, the winding wheel 3 is fixedly connected to the surface of the shaft rod 5, the outer end of the shaft rod 5 passes through the bracket 2 and extends to the outside of the bracket 2, and a rocker rod 6 is provided on the outside of the bracket 2 and is sleeved on the surface of the shaft rod 5. The side of the rocker rod 6 away from the shaft rod 5 is movably connected with a tensioning roller 7 through a bearing, and the film 4 is hung on the surface of the tensioning roller 7. A transmission structure 8 is provided on the top of the base 1, and the transmission structure 8 can drive the rocker rod 6 to swing.

[0044] refer to Figure 3 The transmission structure 8 includes a support frame 9 fixedly connected to the top of the base 1, a screw 10 is movably connected to the inside of the support frame 9 through a bearing, a transmission motor 11 is fixedly connected to the inside of the support frame 9 for driving the screw 10 to rotate, a transmission frame 12 is threadedly connected to the surface of the screw 10, push rods 13 are fixedly connected to both sides of the transmission frame 12, the push rods 13 extend from one side of the transmission frame 12 to the inside of the rocker arm 6, and the rocker arm 6 is slidably connected to the push rods 13.

[0045] As a technical optimization scheme of the present invention, through the design of the transmission structure 8, including the support frame 9, the screw 10, the transmission motor 11, the transmission frame 12 and the push rod 13, precise control of the rocker arm 6 is achieved. Through the rotation of the transmission motor 11, the screw 10 and the transmission frame 12 can be driven to move up and down, and then the rocker arm 6 is pushed to swing through the push rod 13 to adjust the position of the tensioning roller 7, thereby achieving precise control of the tension of the film 4.

[0046] refer to Figure 5 The support frame 9 is fixedly connected to the guide rods 14 located on both sides of the screw rod 10 , and the transmission frame 12 is sleeved on the surface of the guide rods 14 and is slidably connected to the guide rods 14 .

[0047] As a technical optimization solution of the present invention, the design of the guide rod 14 increases the stability of the transmission frame 12, preventing it from rotating or deflecting on the screw rod 10. The transmission frame 12 is sleeved on the guide rod 14 and slidably connected with the guide rod 14, ensuring the stability and accuracy of the transmission frame 12 during the up and down movement.

[0048] refer to Figure 3 The top of the swing rod 6 is fixedly connected to an extension rod 15, and the side of the extension rod 15 away from the swing rod 6 is fixedly connected to a vertical plate 16, and the side of the vertical plate 16 away from the extension rod 15 is movably connected to a transmission rod 17 through a bearing, and the bottom end of the transmission rod 17 is fixedly connected to a conveying wheel 18, and the conveying wheel 18 can push the outer edge of the film 4 to move outward during rotation, and the bottom of the conveying wheel 18 contacts the surface of the film 4, and the outer end of the extension rod 15 is provided with a linkage structure 19, which can utilize the torque of the shaft rod 5.

[0049] As a technical optimization solution of the present invention, through the design of the extension rod 15 and the conveying wheel 18, especially through the movable connection between the transmission rod 17 and the extension rod 15, the conveying wheel 18 pushes the outer edge of the film 4, which not only helps to ensure the flatness of the film 4 during the winding process, but also prevents the film 4 from accumulating too thickly or generating wrinkles on the winding wheel 3.

[0050] refer to Figure 3The linkage structure 19 includes a pulley 20 connected to the outside of the shaft rod 5 and the extension rod 15 respectively. A belt 21 is sleeved on the surface of the pulley 20. The surface of the belt 21 close to the shaft rod 5 and the surface of the transmission rod 17 are fixedly connected with a bevel gear 22, and the teeth on the surface of the bevel gear 22 are meshed with each other.

[0051] As a technical optimization solution of the present invention, the torque of the shaft 5 is fully utilized through the design of the linkage structure 19. The rotation of the shaft 5 is converted into the rotation of the conveying wheel 18 through the transmission of the pulley 20, the belt 21 and the bevel gear 22, which not only improves the energy utilization efficiency, but also coordinates the rotation of the conveying wheel 18 with the adjustment of the tensioning roller 7, further improving the winding quality and efficiency.

[0052] refer to Figure 3 A cross bar 23 is fixedly connected to the top of the bracket 2, and a connecting rod 24 is movably connected to the side of the cross bar 23 away from the bracket 2 through a pin shaft. An end of the connecting rod 24 away from the cross bar 23 is movably connected to a lifting roller 25 through a pin shaft, and the film 4 is hung on the surface of the lifting roller 25.

[0053] As a technical optimization solution of the present invention, the design of the lifting roller 25 helps to better control the winding speed and tension of the film 4. As the thickness of the film 4 increases, the lifting roller 25 gradually descends through the action of the connecting rod 24 and the force-bearing rod 26, thereby maintaining an appropriate distance between the film 4 and the winding wheel 3, preventing excessive accumulation or relaxation of the film 4.

[0054] refer to Figure 4 One end of the connecting rod 24 close to the cross rod 23 is fixedly connected to a force-bearing rod 26, and the force-bearing rod 26 extends to the outside of the transmission frame 12 away from the side of the connecting rod 24. The push rod 13 on the surface of the transmission frame 12 can contact the surface of the force-bearing rod 26 and use the push rod 13 to squeeze the force-bearing rod 26 to swing during the descent of the transmission frame 12.

[0055] As a technical optimization scheme of the present invention, the design of the force-bearing rod 26 enables the transmission frame 12 to squeeze the force-bearing rod 26 during the descent process, and then drives the lifting roller 25 to descend through the connecting rod 24, which not only simplifies the control mechanism of the lifting roller 25, but also improves the compactness and reliability of the entire device. At the same time, the contact between the force-bearing rod 26 and the push rod 13 also ensures that the timing and amplitude of the descent of the lifting roller 25 match the requirements of the winding of the film 4.

[0056] refer to Figure 1 , a winding device for a COF composite film and a method for using the same, comprising the following steps:

[0057] Initial preparation: fix one end of the COF composite film on the winding wheel 3, ensure that the film 4 is flat and firmly connected, hang the other end of the film 4 on the tensioning roller 7, adjust the initial position of the tensioning roller 7, so that the film 4 has a certain tension but not too tight, start the transmission motor 11 and start to rotate. This rotation action is the initial power source of the winding process;

[0058] Adjustment of the position of the tension roller 7: The rotation of the transmission motor 11 drives the screw 10 to start rotating. The rotation of the screw 10 drives the transmission frame 12 to move up and down in the support frame 9 through the threaded connection. As the transmission frame 12 moves, the push rod 13 also moves. The movement direction of the push rod 13 determines the swing direction of the swing rod 6. When the transmission frame 12 rises, the push rod 13 pushes the swing rod 6, so that the tension roller 7 is close to the winding wheel 3, and the tension of the film 4 is reduced;

[0059] Film 4 flatness control: The shaft 5 rotates under the drive of the winding wheel 3, generating torque, which is transmitted to the pulley 20 outside the extension rod 15 through the pulley 20 and the belt 21, thereby driving the transmission rod 17 and the conveying wheel 18 to rotate. When the conveying wheel 18 rotates, its bottom contacts the surface of the film 4, pushing the outer edge of the film 4 to move outward. This movement process ensures that the film 4 remains flat during the winding process, preventing the occurrence of wrinkles and accumulation;

[0060] The lifting roller 25 descends: when the transmission frame 12 descends to a certain extent, the push rod 13 will squeeze the force-bearing rod 26. The squeezing of the force-bearing rod 26 causes the connecting rod 24 to swing, and then the lifting roller 25 descends. The descent of the lifting roller 25 helps to better control the winding speed and tension of the film 4. As the thickness of the film 4 increases, the descent of the lifting roller 25 can ensure the appropriate distance between the film 4 and the winding wheel 3, thereby preventing excessive accumulation or relaxation of the film 4.

[0061] The working principle and use process of the present invention are as follows: the winding device is composed of a base 1, a bracket 2, a winding wheel 3, a tensioning roller 7, a transmission structure 8, etc., one end of the COF composite film is fixed on the winding wheel 3, and it is ensured that the film 4 is flatly hung on the tensioning roller 7, the transmission motor 11 is started, and the screw 10 starts to rotate. The rotation of the screw 10 drives the transmission frame 12 to move up and down in the support frame 9 through a threaded connection. As the transmission frame 12 moves, the push rod 13 also moves and pushes the swing rod 6 to swing. The swing of the swing rod 6 drives the tensioning roller 7 to change its position, thereby adjusting the tension of the film 4. When the transmission frame 12 rises, the push rod 13 pushes the swing rod 6 to make the tensioning roller 7 close to the winding wheel 3, and the tension of the film 4 is reduced. When the transmission frame 12 drops, the push rod 13 pulls the swing rod 6 to make the tensioning roller 7 away from the winding wheel 3, and the film 4 The tension increases, and at the same time, the shaft rod 5 rotates under the drive of the winding wheel 3, generating torque, which is transmitted to the pulley 20 on the outside of the extension rod 15 through the pulley 20 and the belt 21, thereby driving the transmission rod 17 and the conveying wheel 18 to rotate. When the conveying wheel 18 rotates, its bottom contacts the surface of the film 4, pushing the outer edge of the film 4 to move outward to ensure that the film 4 remains flat during the winding process. When the transmission frame 12 drops to a certain extent, the push rod 13 will squeeze the force-bearing rod 26 to make the connecting rod 24 swing, and then the lifting roller 25 drops. The drop of the lifting roller 25 helps to better control the winding speed and tension of the film 4, and prevent the film 4 from accumulating too thick or loose on the winding wheel 3. Under the joint action of the transmission motor 11, the tensioning roller 7, the conveying wheel 18 and the lifting roller 25, the film 4 is continuously wound on the winding wheel 3.

[0062] In summary: the winding device for COF composite film and the use method thereof realize the winding function of the COF composite film through the bracket 2 fixedly connected to the base 1, the winding wheel 3 connected by transmission, and the film 4 hung on the surface of the winding wheel 3. In particular, the design of the shaft rod 5 and the tensioning roller 7 movably connected by the bearing provides a basis for the tension control of the film 4.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A winding device for a COF composite film, comprising a base (1); A bracket (2) fixedly connected to the top of the base (1); A reel (3) drivingly connected to the inner side of the bracket (2); A film (4) hung on the surface of the winding wheel (3); Features: The inner side of the bracket (2) is movably connected to a shaft (5) via a bearing, the winding wheel (3) is fixedly connected to the surface of the shaft (5), the outer end of the shaft (5) passes through the bracket (2) and extends to the outside of the bracket (2), the outer side of the bracket (2) is provided with a swing rod (6) sleeved on the surface of the shaft (5), the side of the swing rod (6) away from the shaft (5) is movably connected to a tensioning roller (7) via a bearing, the film (4) is hung on the surface of the tensioning roller (7), and the top of the base (1) is provided with a transmission structure (8), and the transmission structure (8) can drive the swing rod (6) to swing.

2. A winding device for a COF composite film according to claim 1, characterized in that: The transmission structure (8) comprises a support frame (9) fixedly connected to the top of the base (1); a screw rod (10) is movably connected to the interior of the support frame (9) via a bearing; a transmission motor (11) is fixedly connected to the interior of the support frame (9) for driving the screw rod (10) to rotate; a transmission frame (12) is threadedly connected to the surface of the screw rod (10); push rods (13) are fixedly connected to both sides of the transmission frame (12); the push rod (13) extends from one side of the transmission frame (12) to the interior of the swing rod (6); and the swing rod (6) is slidably connected to the push rod (13).

3. A winding device for a COF composite film according to claim 2, characterized in that: The support frame (9) is fixedly connected to guide rods (14) located on both sides of the screw rod (10), and the transmission frame (12) is sleeved on the surface of the guide rods (14) and is slidably connected to the guide rods (14).

4. A winding device for a COF composite film according to claim 1, characterized in that: The top of the swing rod (6) is fixedly connected to an extension rod (15); the side of the extension rod (15) away from the swing rod (6) is fixedly connected to a vertical plate (16); the side of the vertical plate (16) away from the extension rod (15) is movably connected to a transmission rod (17) via a bearing; the bottom end of the transmission rod (17) is fixedly connected to a conveying wheel (18); the conveying wheel (18) can push the outer edge of the film (4) to move outward during rotation; the bottom of the conveying wheel (18) contacts the surface of the film (4); the outer end of the extension rod (15) is provided with a linkage structure (19); the linkage structure (19) can utilize the torsion of the shaft rod (5).

5. A winding device for a COF composite film according to claim 4, characterized in that: The linkage structure (19) comprises a pulley (20) connected to the outside of the shaft rod (5) and the extension rod (15) respectively, a belt (21) being sleeved on the surface of the pulley (20), a helical gear (22) being fixedly connected to the surface of the belt (21) on the side close to the shaft rod (5) and the surface of the transmission rod (17), and the teeth on the surface of the helical gear (22) are meshed with each other.

6. A winding device for a COF composite film according to claim 2, characterized in that: A cross bar (23) is fixedly connected to the top of the bracket (2); a side of the cross bar (23) away from the bracket (2) is movably connected to a connecting rod (24) via a pin; an end of the connecting rod (24) away from the cross bar (23) is movably connected to a lifting roller (25) via a pin; and the film (4) is hung on the surface of the lifting roller (25).

7. A winding device for a COF composite film according to claim 6, characterized in that: One end of the connecting rod (24) close to the cross rod (23) is fixedly connected to a force-bearing rod (26); a side of the force-bearing rod (26) away from the connecting rod (24) extends to the outside of the transmission frame (12); a push rod (13) on the surface of the transmission frame (12) can contact the surface of the force-bearing rod (26) and use the push rod (13) to squeeze the force-bearing rod (26) to swing during the descending process of the transmission frame (12).

8. The method for using a winding device for a COF composite film according to claim 1, characterized in that: The following steps are involved: Initial preparation: fix one end of the COF composite film on the winding wheel (3) to ensure that the film (4) is flat and firmly connected, hang the other end of the film (4) on the tensioning roller (7), adjust the initial position of the tensioning roller (7) so that the film (4) has a certain tension but not too tight, start the transmission motor (11) and start to rotate. This rotation action is the initial power source of the winding process; Adjustment of the position of the tension roller (7): The rotation of the transmission motor (11) drives the screw rod (10) to start rotating. The rotation of the screw rod (10) drives the transmission frame (12) to move up and down in the support frame (9) through the threaded connection. As the transmission frame (12) moves, the push rod (13) also moves. The movement direction of the push rod (13) determines the swing direction of the swing rod (6). When the transmission frame (12) rises, the push rod (13) pushes the swing rod (6), so that the tension roller (7) is close to the winding wheel (3), and the tension of the film (4) is reduced; Film (4) flatness control: The shaft (5) rotates under the drive of the winding wheel (3), generating torque, which is transmitted to the pulley (20) outside the extension rod (15) through the pulley (20) and the belt (21), thereby driving the transmission rod (17) and the conveying wheel (18) to rotate. When the conveying wheel (18) rotates, its bottom contacts the surface of the film (4), pushing the outer edge of the film (4) to move outward. This movement process ensures that the film (4) remains flat during the winding process, preventing the occurrence of wrinkles and accumulation. The lifting roller (25) descends: when the transmission frame (12) descends to a certain extent, the push rod (13) squeezes the force-bearing rod (26), and the squeezing of the force-bearing rod (26) causes the connecting rod (24) to swing, thereby lowering the lifting roller (25). The lowering of the lifting roller (25) helps to better control the winding speed and tension of the film (4). As the thickness of the film (4) increases, the lowering of the lifting roller (25) can ensure the appropriate distance between the film (4) and the winding wheel (3), thereby preventing the film (4) from being excessively accumulated or loosened.

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