Glue-free automatic composite winding mechanism and roll changing and tape connecting method

Abstract

The invention discloses a rubberizing-free automatic composite rolling mechanism and a roll changing and belt connecting method. The glue-free automatic composite winding mechanism comprises a rack, a guide roller assembly used for transition of a thin film, a cutter assembly used for cutting off the thin film, a pressing roller assembly used for pressing the thin film and adjusting the tension of the thin film, an unwinding assembly used for unwinding a base film and a winding assembly used for winding the thin film and the base film, and the guide roller assembly, the cutter assembly, the pressing roller assembly, the unwinding assembly and the winding assembly are sequentially installed on the rack. The rack is further provided with a static electricity generating device and a static electricity eliminating device which are located between the unwinding assembly and the winding assembly, the static electricity generating device is used for enabling the base film to generate static electricity, the static electricity eliminating device is used for eliminating the static electricity on the base film, and the rack is further fixedly provided with a turnover cross beam. The automatic roll changing device has the advantages of automatic roll changing, high roll changing success rate and high roll changing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of film winding, in particular to an adhesive-free automatic composite winding mechanism and a roll-changing and tape-joining method. Background Art

[0002] PE film is widely used as a separator material for lithium batteries due to its excellent mechanical properties, chemical stability and relatively low cost.

[0003] With the development of lithium battery equipment towards unmanned and intelligent operation, the existing winding structure needs to first stick glue on the roll when changing the roll, and then manually find the glue sticking position and press the glue to stick it before the next winding work can be carried out. It is highly dependent on manual labor and has low winding efficiency.

[0004] In view of this, the purpose of the present invention is to provide a new technical solution to solve the existing technical problems. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a glue-free automatic composite winding mechanism, which solves the problem of manual glue application before winding and low winding efficiency.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A glue-free automatic composite winding mechanism comprises a frame, a guide roller assembly for a transition film which is sequentially installed on the frame, a cutter assembly for cutting the film, a pressure roller assembly for pressing the film and adjusting the film tension, an unwinding assembly for unwinding a base film, and a winding assembly for winding the film and the base film. The frame is also provided with a static electricity generating device and a static electricity eliminating device located between the unwinding assembly and the winding assembly. The static electricity generating device is used to generate static electricity on the base film, and the static electricity eliminating device is used to eliminate static electricity on the base film. A flip beam is also fixedly provided on the frame.

[0008] In the above structure, the winding assembly includes a first winding roller and a second winding roller, and the first winding roller and the second winding roller are respectively arranged on both sides of the frame, and the unwinding assembly includes a first unwinding roller and a second unwinding roller, the first unwinding roller is used to unwind the first base film, the first winding roller is used to compositely wind up the film and the first base film, and the second winding roller is used to compositely wind up the film and the second base film.

[0009] In the above structure, the pressure roller assembly and the cutter assembly are arranged on the side close to the film feed port. When the first winding roller is located on the side close to the feed port, the pressure roller assembly is used to press the film and the first base film onto the first winding roller. When the second winding roller is flipped to the side close to the feed port, the pressure roller assembly is used to press the film and the second base film onto the second winding roller.

[0010] In the above structure, the electrostatic generating device includes a first electrostatic generating device and a second electrostatic generating device, and the electrostatic eliminating device includes a first electrostatic eliminating device and a second electrostatic eliminating device. The first electrostatic generating device and the first electrostatic eliminating device are arranged in the unwinding path of the first unwinding roller and are located before the first base film and the film are bonded. The second electrostatic generating device and the second electrostatic eliminating device are arranged in the unwinding path of the second unwinding roller and are located before the second base film and the film are bonded.

[0011] In the above structure, the unwinding paths of the first unwinding roller and the second unwinding roller are both provided with adjustment rollers, and adjustment components are provided at both ends of the adjustment rollers. By adjusting the adjustment components, the adjustment rollers can be moved toward or away from the electrostatic generating device.

[0012] In the above structure, the adjustment assembly includes a cushion block, a slider, an end block and a screw rod, the cushion block is fixedly connected to the frame, the end block is fixedly connected to the cushion block, a guide shaft is arranged between the two end blocks, the slider is slidably connected to the guide shaft, the screw rod is rotationally connected to the end blocks on both sides and is rotationally connected to the slider, and the end of the adjustment roller is fixedly arranged on the corresponding slider.

[0013] In the above structure, the cushion block is provided with a scale, the screw rod is provided with a rotating handle fixedly connected thereto, the end block is detachably connected with a hand screw, and the hand screw is pressed against the screw rod.

[0014] In the above structure, the cutter assembly includes a winding cutter and a cutter driving cylinder arranged at both ends of the winding cutter, the output shafts of the two cutter driving cylinders are respectively connected to the two ends of the winding cutter, a cutter mounting plate is slidably connected to the frame, and the cutter driving cylinder is fixedly connected to the cutter mounting plate.

[0015] In the above structure, the pressing roller assembly includes a film pressing cylinder and a film pressing rubber roller, two film pressing cylinders are arranged at both ends of the film pressing rubber roller to drive the film pressing rubber roller to press the film, and the film pressing cylinder is fixedly connected to the cutter mounting plate.

[0016] Based on the above structure, the present invention also provides a roll-changing and tape-splicing method, comprising the following steps:

[0017] Step 1, roll change preparation: firstly, install the roll with the second base film on the second unwinding roller, lead the second base film to the second winding roller, and fix the second base film to the second unwinding roller;

[0018] Step 2, tape bonding: when the first winding roller is finished winding, the second static electricity generating device is started to generate static electricity on the surface of the second base film, and the film is bonded to the second base film with static electricity under the action of static electricity adsorption, and then the film pressing cylinder is started to drive the film pressing rubber roller to move away from the film, and the film is now freed from the pressing action of the pressing roller assembly;

[0019] Step 3, switching of the winding and unwinding stations: starting the flipping drive to drive the frame to flip, so that the second winding roller and the second unwinding roller are switched to the side close to the film feed port; after flipping in place, starting the film pressing cylinder again to drive the film pressing rubber roller to move towards the direction close to the film, so that the film and the second base film are pressed tightly against the second winding roller;

[0020] Step 4, cutting the film: starting the cutter drive cylinder, so that the winding cutter approaches the film and cuts the film. At this time, due to the static electricity on the second base film, the film close to the feed end is tightly adsorbed on the second base film;

[0021] Step 5, static electricity elimination: when the second winding roller starts to wind up the film, the second static electricity elimination device is started to eliminate static electricity on the surface of the second base film;

[0022] Step 6, reel change and reeling: the second reeling roller reels the second base film and the film adsorbed on the second base film.

[0023] The beneficial effects of the present invention are as follows: an electrostatic generating device is provided, and when changing rolls, the electrostatic generating device generates static electricity on the base film, so that the film is adsorbed on the base film under the action of static electricity, thereby realizing automatic composite splicing without glue. Compared with the method of manually sticking glue to splice and change rolls, the success rate of roll changing is greatly improved, and the roll changing efficiency is effectively improved; an electrostatic eliminator is provided to eliminate static electricity on the base film after bonding, thereby effectively reducing the possibility of wrinkling of the film due to static electricity during the winding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the film and base film in the present invention;

[0027] Figure 3 It is a cross-sectional schematic diagram of the present invention;

[0028] Figure 4 It is a schematic diagram of the connection structure of the regulating components in the present invention;

[0029] Figure 5It is a schematic diagram of the connection structure of the cutter assembly in the present invention.

[0030] Reference numerals:

[0031] 1. Frame; 11. First static electricity generating device; 12. First static electricity eliminating device; 13. Cutter mounting plate; 131. Cylinder mounting seat; 132. Film pressing guide rail; 133. Rubber roller moving block; 134. Cutter mounting seat; 14. Adjusting roller; 15. Turning beam; 16. Second static electricity generating device; 17. Second static electricity eliminating device

[0032] 2. Unwinding assembly; 21. First unwinding roller; 211. First base film; 22. Second unwinding roller; 221. Second base film;

[0033] 3. Winding assembly; 31. first winding roller; 32. second winding roller;

[0034] 4. Cutter assembly; 41. Winding cutter; 42. Cutter drive cylinder; 43. Bearing seat;

[0035] 5. Pressing roller assembly; 51. Film pressing cylinder; 52. Film pressing rubber roller;

[0036] 6. Guide roller;

[0037] 7. Adjustment assembly; 71. Spacer block; 711. Scale ruler; 72. Slider; 73. Screw rod; 731. Turn handle; 74. End block; 741. Guide shaft; 742. Thumb screw;

[0038] 8. Film. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-5 The present invention is further described.

[0040] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0041] Reference Figures 1 to 5The present invention provides a non-adhesive automatic composite winding mechanism, which is used in the process of winding film 8, so as to realize that in the process of winding and changing rolls, there is no need to glue the empty roll, reduce manual intervention in the winding process, and realize unmanned and automatic roll changing. The non-adhesive automatic composite winding mechanism includes a frame 1, a guide roller assembly, a cutter assembly 4, a pressure roller assembly 5, a reeling assembly 2 and a reeling assembly 3 which are sequentially installed on the frame 1, wherein the frame 1 is the base of the entire reeling mechanism, which is used to carry and install various components; the guide roller assembly is used to transition the film 8 so that it can be smoothly reeled; the cutter assembly 4 is used to cut the film 8, and when the reel on the reeling assembly 3 is finished reeling, the cutter assembly 4 approaches the film 8 to cut the film 8; the pressure roller assembly 5 is used to press the film 8, adjust the tension of the film 8, so that the film 8 is kept taut during the transmission process, and can press the film 8 against the base film, so that the film 8 and the base film are closely attached; the reeling assembly 2 is used to unwind the base film; the reeling assembly 3 is used to reel the film 8 and the base film. The frame 1 is also provided with an electrostatic generating device and an electrostatic eliminating device. The electrostatic generating device is used to generate static electricity on the base film so that the film 8 can be tightly adsorbed on the base film due to the electrostatic effect. The electrostatic eliminating device is used to eliminate the static electricity on the base film. After the tape is connected, the electrostatic eliminating device is started to eliminate the static electricity of the base film to reduce the possibility of wrinkling of the film 8 during the winding process. The frame 1 is also fixedly connected with a conventional structure of the winding mechanism such as a flip beam 15. The flip beam 15 is used to drive the entire frame 1 to flip with an external flip drive (not shown in the figure), so as to realize the switching of the winding and unwinding stations. The installation and connection of the flip drive and the flip beam 15 with the flip drive refer to the prior art, and its connection structure and working principle are not described in detail here.

[0042] The guide roller assembly includes a plurality of guide rollers 6, which are arranged at intervals on the frame 1. When the film 8 is being wound, it passes through the plurality of guide rollers 6 from the feed port, and the guide rollers 6 pull the film 8 onto the winding assembly 3. The guide roller assembly is arranged in the winding path of the film 8 to guide and position the film 8.

[0043] Reference Figures 1 to 3The winding assembly 3 includes a first winding roller 31 and a second winding roller 32 arranged on the frame 1. The first winding roller 31 and the second winding roller 32 are symmetrically arranged on the inner side of the frame 1 along the vertical direction. The frame 1 is connected to a winding driving device (not shown in the figure) for driving the first winding roller 31 and the second winding roller 32 to rotate respectively. The unwinding assembly 2 includes a first unwinding roller 21 and a second unwinding roller 22. The first unwinding roller 21 and the second unwinding roller 22 are symmetrically arranged on the inner side of the frame 1 along the horizontal direction. The frame 1 is connected to an unwinding driving device (not shown in the figure) for driving the first unwinding roller 21 and the second unwinding roller 22 to rotate respectively. Among them, the first unwinding roller 21 is used to unwind the first base film 211, and the first winding roller 31 is used to compositely rewind the film 8 and the first base film 211; the second unwinding roller 22 is used to unwind the second base film 221, and the second winding roller 32 is used to compositely rewind the film 8 and the second base film 221. The first winding roller 31 and the first unwinding roller 21 form a first winding and unwinding station, and the second winding roller 32 and the second unwinding roller 22 form a second winding and unwinding station. The pressure roller assembly 5 and the cutter assembly 4 are arranged on the side close to the film 8 feed inlet. When the first winding and unwinding station is performing winding and unwinding operation, that is, the first winding roller 31 and the second winding roller 32 are located on the side close to the film 8 feed inlet, the pressure roller assembly 5 presses the film 8 on the first winding roller 31, and the cutter assembly 4 can cut the upper film 8 and the base film of the first winding roller 31 and the first unwinding roller 21; when the first winding and unwinding station completes the winding and unwinding work, the flipping drive member is started to drive the frame 1 to flip, and the second winding and unwinding station is flipped to the side close to the film 8 feed inlet. At this time, the pressure roller assembly 5 presses the film 8 on the second winding roller 32, and the cutter assembly 4 can cut the film 8 on the second winding roller 32 and the second unwinding roller 22.

[0044] Further, the electrostatic generating device includes a first electrostatic generating device 11 and a second electrostatic generating device 16, and the electrostatic eliminating device includes a first electrostatic eliminating device 12 and a second electrostatic eliminating device 17. The first electrostatic generating device 11 and the first electrostatic eliminating device 12 are arranged in the unwinding path of the first unwinding roller 21, and are located before the first base film 211 and the film 8 are attached to each other. The two cooperate to generate static electricity and eliminate static electricity for the first base film 211 unwound by the first unwinding roller 21. The second electrostatic generating device 16 and the second electrostatic eliminating device 17 are arranged in the unwinding path of the second unwinding roller 22, and are located before the second base film 221 and the film 8 are attached to each other. The two cooperate to generate static electricity and eliminate static electricity for the second base film 221 unwound by the second unwinding roller 22.

[0045] During winding, the first winding roller 31 and the second winding roller 32 form two winding stations. When the first winding roller 31 is wound, the flip frame 1 can be switched to the second winding roller 32 for winding. When the first winding roller 31 is flipped and switched to the second winding roller 32 for winding, the second static electricity generating device 16 is first started to generate static electricity on the second base film 221. The film 8 is adsorbed and bonded to the second base film 221 under the action of static electricity, and the pressing roller assembly 5 presses the film 8 to the second base film 221. At this time, the cutting knife assembly 4 is driven to cut the film 8, and the connection between the film 8 and the first winding roller 31 is cut off. At this time, the second winding roller 32 is started to wind the film 8. After the film 8 and the second base film 221 are bonded and spliced, the static electricity eliminating device is started to eliminate the static electricity on the surface of the second base film 221 to ensure the normal winding work and effectively avoid the phenomenon of composite winding wrinkling.

[0046] Furthermore, an adjustment roller 14 is provided in the unwinding path of the first unwinding roller 21 and the second unwinding roller 22. The adjustment roller 14 is provided on the side of the base film opposite to the electrostatic generating device. Adjustment components 7 are provided at both ends of the adjustment roller 14. By adjusting the adjustment components 7, the distance between the base film and the electrostatic generating device and the electrostatic eliminating device can be adjusted, so that the electrostatic generating device and the electrostatic eliminating device can better act on the base film.

[0047] Reference Figure 3 and Figure 4 The adjusting assembly 7 includes a cushion block 71, a slider 72, an end block 74 and a screw rod 73. The cushion block 71 is fixedly mounted on the frame 1. A guide shaft 741 is fixedly connected between the two end blocks 74. The slider 72 is slidably connected to the guide shaft 741, and the slider 72 is rotatably connected to the screw rod 73. The screw rod 73 is rotatably mounted on the two end blocks 74. One end of the screw rod 73 passes through a side end cover. The two end blocks 74 are symmetrically fixed on the cushion block 71. The end of the adjusting roller 14 is fixedly connected to the corresponding slider 72. Rotating the screw rod 73 can drive the slider 72 to slide on the guide shaft 741, thereby realizing the adjustment of the distance between the adjusting roller 14 and the electrostatic generating device.

[0048] Furthermore, a scale ruler 711 is fixedly provided on the cushion block 71, and a rotating handle 731 is fixedly connected to one end of the screw rod 73 passing through the end block 74. A hand screw 742 is detachably connected to the end block 74, and the end of the hand screw 742 is pressed against the screw rod 73. The scale ruler 711 is provided so that the adjustment distance can be accurately known, which is conducive to ensuring the adjustment accuracy of the adjustment roller 14; the rotating handle 731 is provided to reduce the difficulty of adjustment. The hand screw 742 is provided to limit and fix the screw rod 73. When the screw rod 73 needs to be rotated, the hand screw 742 is loosened to loosen the limit fixation of the screw rod 73. When the adjustment is completed, the hand screw 742 is tightened to fix the screw rod 73, so as to reduce the possibility that the screw rod 73 deflects under the tension of the base film during use, causing the adjustment roller 14 to shift in position.

[0049] Furthermore, the pressing roller assembly 5 and the cutting knife assembly 4 are arranged on the side close to the feeding port of the film 8. When the first winding roller 31 is located on the side close to the feeding port, that is, when the first winding and unwinding station is performing winding and unwinding operations, the pressing roller assembly 5 presses the film 8 and the first base film 211 against the first winding roller 31; when the second winding roller 32 is turned over to the side close to the feeding port, that is, when the second winding and unwinding station is performing winding and unwinding operations, the pressing roller assembly 5 is used to press the film 8 and the second base film 221 against the second winding roller 32. When the frame 1 performs a turning motion, the positions of the pressing roller assembly 5 and the cutting knife assembly 4 do not change with the turning.

[0050] Reference Figure 3 and Figure 5 The cutter assembly 4 includes a winding cutter 41 and a cutter driving cylinder 42. The two cutter driving cylinders 42 are arranged at both ends of the winding cutter 41, and the output shafts of the cutter driving cylinders 42 are respectively connected to the two ends of the winding cutter 41. The two cutter driving cylinders 42 act simultaneously to drive the winding cutter 41 to act. A cutter mounting plate 13 is slidably connected to the frame 1, and the cutter driving cylinder 42 is fixedly connected to the cutter mounting plate 13.

[0051] Specifically, the cutter mounting plate 13 is fixedly connected with a cylinder mounting seat 131, the cutter driving cylinder 42 is rotatably connected to the cylinder mounting seat 131, the piston rod of the cutter driving cylinder 42 is fixedly connected with a Y-type joint, the cutter mounting plate 13 is fixedly connected with a cutter mounting seat 134, the two ends of the winding cutter 41 are fixedly connected with bearing seats 43, the bearing seats 43 are rotatably connected to the cutter mounting seat 134, and the piston rod of the cutter driving cylinder 42 is rotatably connected to the bearing seats 43 through the Y-type joint. When the piston rod of the cutter driving cylinder 42 is extended, the bearing seats 43 are driven to rotate, driving the winding cutter 41 to rotate, so that the winding cutter 41 is close to the film 8 to cut the film 8; when the piston rod of the cutter driving cylinder 42 is retracted, the winding cutter 41 is driven to move away from the film 8.

[0052] In this embodiment, the cutter assembly 4 is arranged on the side of the film 8 opposite to the second winding roller 32. When the first winding roller 31 completes winding, the cutter assembly 4 cuts the film 8. At this time, the second winding roller 32 can be switched to wind up the film 8.

[0053] The pressing roller assembly 5 includes a film pressing cylinder 51 and a film pressing rubber roller 52 . The two film pressing cylinders 51 are arranged at both ends of the film pressing rubber roller 52 . The two film pressing cylinders 51 act simultaneously to drive the film pressing rubber roller 52 to press the film 8 .

[0054] Specifically, the film pressing cylinder 51 is fixedly connected to the cutter mounting plate 13, a film pressing guide rail 132 is fixedly connected to the cutter mounting plate 13, a rubber roller moving block 133 is slidably connected to the film pressing guide rail 132, both ends of the film pressing rubber roller 52 are respectively fixedly connected to the corresponding rubber roller moving blocks 133, and the piston rod of the film pressing cylinder 51 is fixedly connected to the corresponding rubber roller moving block 133. The extension or retraction of the piston rod of the film pressing cylinder 51 drives the rubber roller moving block 133 to slide on the film pressing guide rail 132, thereby realizing that the film pressing rubber roller 52 presses or releases the film 8, and realizes the tension of the film 8.

[0055] Furthermore, in this embodiment, the film 8 is a PE film, and the base film is a PET film.

[0056] Based on the above-mentioned structure of the glue-free automatic composite winding mechanism, the present invention also provides a roll-changing and tape-joining method, which comprises the following steps:

[0057] Step 1, roll change preparation: firstly, install the roll with the second base film 221 on the second unwinding roller 22, and lead the second base film 221 to the second winding roller 32, and fix the second base film 221 and the second unwinding roller 22;

[0058] Step 2, tape bonding: When the first winding roller 31 is wound up, the second static electricity generating device 16 is started to generate static electricity on the surface of the second base film 221. At this time, the film 8 is bonded to the second base film 221 with static electricity under the action of static electricity adsorption. Then, the film pressing cylinder 51 is started to drive the film pressing rubber roller 52 to move away from the film 8. At this time, the film 8 is freed from the pressing action of the pressing roller assembly.

[0059] Step 3, switching of the winding and unwinding stations: start the flipping drive to drive the frame 1 to flip, so that the second winding roller 32 and the second unwinding roller 22 are switched to the side close to the film 8 feeding port; after flipping to the right position, start the film pressing cylinder 51 again to drive the film pressing rubber roller 52 to move towards the film 8, so that the film 8 and the second base film 221 are pressed tightly against the second winding roller 32;

[0060] Step 4, cutting the film 8: Start the cutter driving cylinder 42, so that the winding cutter 41 approaches the film 8 and cuts the film 8. At this time, due to the static electricity on the second base film 221, the film 8 close to the feed end is tightly adsorbed on the second base film 221;

[0061] Step 5, static electricity elimination: When the second winding roller 32 starts to wind up the film 8, the second static electricity elimination device 17 is started to eliminate static electricity on the surface of the second base film 221;

[0062] Step 6, rewinding: the second rewinding roller 32 rewinds the second base film 221 and the film 8 adsorbed on the second base film 221 .

[0063] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An automatic composite winding mechanism without adhesive, characterized in that: The invention comprises a frame, a guide roller assembly for transition film which is sequentially installed on the frame, a cutter assembly for cutting film, a pressure roller assembly for pressing film and adjusting film tension, an unwinding assembly for unwinding base film, and a winding assembly for winding film and base film. The frame is also provided with a static electricity generating device and a static electricity eliminating device located between the unwinding assembly and the winding assembly. The static electricity generating device is used to generate static electricity on the base film, and the static electricity eliminating device is used to eliminate static electricity on the base film. A flip beam is also fixedly provided on the frame.

2. The non-adhesive automatic composite winding mechanism according to claim 1, characterized in that: The winding assembly includes a first winding roller and a second winding roller, and the first winding roller and the second winding roller are respectively arranged on both sides of the frame. The unwinding assembly includes a first unwinding roller and a second unwinding roller, and the first unwinding roller is used to unwind the first base film, and the first winding roller is used to compositely wind up the film and the first base film, and the second winding roller is used to compositely wind up the film and the second base film.

3. The non-adhesive automatic composite winding mechanism according to claim 2, characterized in that: The pressure roller assembly and the cutter assembly are arranged on the side close to the film feed port. When the first winding roller is located close to the feed port, the pressure roller assembly is used to press the film and the first base film against the first winding roller. When the second winding roller is flipped to the side close to the feed port, the pressure roller assembly is used to press the film and the second base film against the second winding roller.

4. The non-adhesive automatic composite winding mechanism according to claim 2, characterized in that: The electrostatic generating device includes a first electrostatic generating device and a second electrostatic generating device, and the electrostatic eliminating device includes a first electrostatic eliminating device and a second electrostatic eliminating device. The first electrostatic generating device and the first electrostatic eliminating device are arranged in the unwinding path of the first unwinding roller and are located before the first base film and the film are bonded. The second electrostatic generating device and the second electrostatic eliminating device are arranged in the unwinding path of the second unwinding roller and are located before the second base film and the film are bonded.

5. The non-adhesive automatic composite winding mechanism according to claim 4, characterized in that: Adjustable rollers are provided in the unwinding paths of the first unwinding roller and the second unwinding roller, and adjustment components are provided at both ends of the adjustable rollers. By adjusting the adjustment components, the adjustable rollers can be moved toward or away from the electrostatic generating device.

6. The non-adhesive automatic composite winding mechanism according to claim 5, characterized in that: The adjustment assembly includes a cushion block, a slider, an end block and a screw rod, the cushion block is fixedly connected to the frame, the end block is fixedly connected to the cushion block, a guide shaft is arranged between the two end blocks, the slider is slidably connected to the guide shaft, the screw rod is rotatably connected to the end blocks on both sides and is rotatably connected to the slider, and the end of the adjustment roller is fixedly arranged on the corresponding slider.

7. The non-adhesive automatic composite winding mechanism according to claim 6, characterized in that: The cushion block is provided with a scale ruler, the screw rod is provided with a rotating handle fixedly connected thereto, the end block is detachably connected with a hand screw, and the hand screw is tightly pressed against the screw rod.

8. The non-adhesive automatic composite winding mechanism according to claim 1, characterized in that: The cutter assembly includes a winding cutter and a cutter driving cylinder arranged at both ends of the winding cutter, the output shafts of the two cutter driving cylinders are respectively connected to the two ends of the winding cutter, a cutter mounting plate is slidably connected to the frame, and the cutter driving cylinder is fixedly connected to the cutter mounting plate.

9. The non-adhesive automatic composite winding mechanism according to claim 8, characterized in that: The pressing roller assembly comprises a film pressing cylinder and a film pressing rubber roller. The two film pressing cylinders are arranged at both ends of the film pressing rubber roller to drive the film pressing rubber roller to press the film. The film pressing cylinders are fixedly connected to the cutter mounting plate.

10. A roll-changing and tape-joining method based on the non-adhesive automatic composite winding mechanism according to any one of claims 1 to 9, characterized in that: The steps include: Step 1, roll change preparation: firstly, install the roll with the second base film on the second unwinding roller, lead the second base film to the second winding roller, and fix the second base film to the second unwinding roller; Step 2, tape bonding: when the first winding roller is finished winding, the second static electricity generating device is started to generate static electricity on the surface of the second base film, and the film is bonded to the second base film with static electricity under the action of static electricity adsorption, and then the film pressing cylinder is started to drive the film pressing rubber roller to move away from the film, and the film is now freed from the pressing action of the pressing roller assembly; Step 3, switching of the winding and unwinding stations: starting the flipping drive to drive the frame to flip, so that the second winding roller and the second unwinding roller are switched to the side close to the film feed port; after flipping in place, starting the film pressing cylinder again to drive the film pressing rubber roller to move towards the direction close to the film, so that the film and the second base film are pressed tightly against the second winding roller; Step 4, cutting the film: starting the cutter drive cylinder, so that the winding cutter approaches the film and cuts the film. At this time, due to the static electricity on the second base film, the film close to the feed end is tightly adsorbed on the second base film; Step 5, static electricity elimination: when the second winding roller starts to wind up the film, the second static electricity elimination device is started to eliminate static electricity on the surface of the second base film; Step 6, reel change and reeling: the second reeling roller reels the second base film and the film adsorbed on the second base film.

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