Unwinding device for manufacturing battery diaphragm
By introducing a cleaning roller and a leveling component into the unwinding device, the problem of surface contamination of the roll material was solved, a high-quality unwinding process was achieved, and the processing effect of the battery separator was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-03
AI Technical Summary
Existing unwinding devices for battery separator manufacturing lack a structure for cleaning the surface of the roll material during unwinding, which makes the separator easily adsorb impurities such as dust, oil, and static electricity particles during production, handling, and storage, affecting the quality of subsequent processing.
An unwinding device including a cleaning roller and a leveling component is designed. The cleaning roller removes impurities from the surface of the roll material during the unwinding process, and the leveling component eliminates wrinkles through a leveling roller, ensuring that the surface of the roll material is clean and flat.
It effectively removes dust, oil, and static electricity particles from the surface of the roll material, improves the quality of subsequent processing, reduces the scrap rate, and ensures the flatness and thickness consistency of the roll material.
Smart Images
Figure CN224076742U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery separator production technology, and in particular to an unwinding device for battery separator manufacturing. Background Technology
[0002] Battery separators are a key material used inside lithium-ion batteries. They isolate the positive and negative electrodes while allowing ions to pass through, ensuring that the battery can conduct lithium ions normally during charging and discharging, while preventing direct contact between the positive and negative electrodes that could lead to a short circuit. Battery separator manufacturing unwinding equipment is used to continuously transport battery separator materials (such as polyethylene PE and polypropylene PP films) from the roll state to subsequent processing steps.
[0003] When using the existing unwinding device for battery separator manufacturing, the battery separator roll is first installed on the upper part of the unwinding frame. Then, one end of the roll is passed through two guide rollers. The motor is then started to rotate the guide rollers. The rotation of the guide rollers can transport the battery separator roll into the processing equipment, thus completing the unwinding operation.
[0004] Although existing unwinding devices can complete the unwinding operation of battery separators, they lack a structure for cleaning the surface of the roll during unwinding. During production, handling, and storage, the separator easily adsorbs impurities such as dust, oil, and static electricity particles. These impurities will directly enter subsequent processing with the separator, thus affecting the quality of subsequent processing. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides an unwinding device for battery separator manufacturing, which aims to improve the existing technology that lacks a surface cleaning structure for the roll material during unwinding, and that the separator easily adsorbs impurities such as dust, oil, and static electricity particles during production, handling, and storage, which will directly enter subsequent processing along with the separator.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] An unwinding apparatus for manufacturing battery separators, comprising:
[0008] Unwind rack;
[0009] A horizontal plate, which is fixedly connected to the outer left side of the unwinding frame;
[0010] An electric push rod is fixedly connected to the outer front side of the horizontal plate;
[0011] Guide block, which is fixedly connected to the output end of the electric push rod;
[0012] Two fixed rods and two sliders are provided. The two fixed rods are fixedly connected to the inner sides of the horizontal plate, and the two sliders are slidably connected to the outside of the two fixed rods.
[0013] Two connecting plates are rotatably connected at the top to the outer sides of the guide block, and at the bottom to the outside of the two sliders.
[0014] Two cleaning rollers are mounted on the outer left side of the two sliders, and the two cleaning rollers are arranged opposite each other.
[0015] And a leveling component, the leveling component being used to level wrinkles in the roll material.
[0016] Furthermore, the leveling component includes a mounting block, which is fixedly connected to the top of the unwinding frame. The mounting block has an installation cavity inside, and a movable block is slidably connected inside the installation cavity. A connecting rod is fixedly connected to the bottom of the movable block, and a spring is fixedly connected to the top of the movable block. A leveling roller is rotatably connected to the bottom of the connecting rod.
[0017] Furthermore, a placement tray is rotatably connected to the front side of the unwinding frame, a fixing tray is provided on the right side of the placement tray, a bolt is fixedly connected to the outside of the fixing tray, the bolt is located inside the placement tray, and the roll material is placed outside the placement tray.
[0018] Furthermore, through holes are provided on both sides of the inside of the horizontal plate, and the two sliders are slidably connected inside the two through holes.
[0019] Furthermore, a mounting frame is fixedly connected to the outside of the horizontal plate, a motor is installed outside the mounting frame, a gear is fixedly connected to the output end of the motor, rotating rods are rotatably connected to both sides inside the mounting frame, a gear is fixedly connected to the right side of the lower rotating rod, the gear and the gear mesh with each other, and guide rollers are fixedly connected to the outside of both rotating rods.
[0020] Furthermore, a mounting ring is fixedly connected to the outside of the mounting bracket, and the motor is fixedly connected inside the mounting ring.
[0021] Furthermore, a threaded hole is provided on the front side of the interior of the placement tray, and the bolt is threadedly connected to the threaded hole.
[0022] Furthermore, both guide rollers are made of rubber.
[0023] This utility model has the following beneficial effects:
[0024] In this invention, during unwinding, the roll material is first placed outside the placement tray, and then its end passes through the middle of the two cleaning rollers and the guide roller. The electric push rod is activated to push the guide block to move, which drives the connecting plate to make the two sliders slide relative to each other along the fixed rod, thereby making the two cleaning rollers clamp the two sides of the roll material. When the roll material moves, the cleaning rollers can remove impurities on both sides, preventing dust and other particles from entering subsequent processes and improving processing quality.
[0025] In this invention, when installing the roll material, first rotate the fixing plate to disengage the bolts from the placement plate, then load the roll material. The roll material will lift the leveling roller, pushing the connecting rod and the moving block upwards and compressing the spring. When unwinding, as the diameter of the roll material decreases, the reaction force of the spring keeps the leveling roller in close contact with the roll material to eliminate surface wrinkles, ensure flatness and consistent thickness, reduce subsequent processing defects, and lower the scrap rate.
[0026] In this invention, when installing the diaphragm roll, the fixing plate is rotated to disengage the bolts from the threaded holes of the placement plate. After the roll is placed onto the placement plate, the fixing plate is tightened again to complete the disassembly and assembly. The operation is simple and quick. Attached Figure Description
[0027] Figure 1 This is a perspective view of an unwinding device for manufacturing a battery separator according to the present invention.
[0028] Figure 2 This is a schematic diagram of the guide roller structure of an unwinding device for manufacturing battery separators proposed in this utility model;
[0029] Figure 3 This is a schematic diagram of the internal structure of the mounting block of an unwinding device for manufacturing battery separators according to the present invention.
[0030] Figure 4 This is a schematic diagram of the disassembled structure of the fixing disc of the unwinding device for manufacturing battery separators proposed in this utility model;
[0031] Figure 5 for Figure 2 Enlarged view of the structure at point A in the middle;
[0032] Figure 6 for Figure 3 Enlarged view of the structure at point B.
[0033] Legend:
[0034] 1. Unwinding frame; 2. Placement tray; 3. Fixing tray; 4. Bolt; 5. Mounting block; 6. Horizontal plate; 7. Electric push rod; 8. Guide block; 9. Connecting plate; 10. Fixing rod; 11. Slider; 12. Cleaning roller; 13. Through hole; 14. Mounting bracket; 15. Mounting ring; 16. Motor; 17. Gear 1; 18. Gear 2; 19. Rotating rod; 20. Guide roller; 21. Mounting cavity; 22. Moving block; 23. Spring; 24. Connecting rod; 25. Leveling roller; 26. Threaded hole. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0036] Reference Figures 1-5 This utility model provides an embodiment of an unwinding device for battery separator manufacturing, comprising: an unwinding frame 1; a horizontal plate 6 fixedly connected to the outer left side of the unwinding frame 1; an electric push rod 7 fixedly connected to the outer front side of the horizontal plate 6; a guide block 8 fixedly connected to the output end of the electric push rod 7; two fixed rods 10 and two sliders 11, the two fixed rods 10 fixedly connected to the inner sides of the horizontal plate 6, and the two sliders 11 slidably connected to the outer sides of the two fixed rods 10; two connecting plates 9, the tops of the two connecting plates 9 rotatably connected to the outer sides of the guide block 8, and the bottoms of the two connecting plates 9 rotatably connected to the outer sides of the two sliders 11; two cleaning rollers 12, the two cleaning rollers 12 installed on the outer left side of the two sliders 11, and the two cleaning rollers 12 being arranged opposite to each other; and a leveling assembly, the leveling assembly being used to level the wrinkles of the roll material, with through holes 13 provided on both inner sides of the horizontal plate 6, and the two sliders 11 slidably connected inside the two through holes 13, the through holes 13 facilitating the movement of the sliders 11.
[0037] Specifically, during the unwinding operation, firstly, the diaphragm roll needs to be placed outside the placement tray 2. Then, one end of the roll is passed through the middle of the two cleaning rollers 12 and the two guide rollers 20 in sequence. After the basic threading is completed, the electric push rod 7 is activated. After being powered on, the electric push rod 7 starts to move the guide block 8 fixedly connected to its output end. The movement of the guide block 8 then causes the two connecting plates 9 rotatably connected to its outer sides to move synchronously. At the same time as the two connecting plates 9 move, the two sliders 11 rotatably connected to their bottoms also move in relative directions along the outside of the two fixed rods 10. With the relative movement of the two sliders 11, the two cleaning rollers 12 fixedly connected to their outer sides also move in relative directions at the same time, so that the two cleaning rollers 12 can achieve the adhesion and covering of the outer sides of the diaphragm roll, thereby continuously wiping and cleaning its surface during the movement of the roll. This cleaning process can effectively remove dust, oil stains and static electricity particles and other fine impurities attached to the surface of the roll, preventing them from entering the subsequent processing stage and causing adverse effects, thereby improving the quality of subsequent processing.
[0038] Reference Figures 3-6 The leveling component includes a mounting block 5, which is fixedly connected to the top of the unwinding frame 1. The mounting block 5 has a mounting cavity 21 inside, and a movable block 22 is slidably connected inside the mounting cavity 21. A connecting rod 24 is fixedly connected to the bottom of the movable block 22, and a spring 23 is fixedly connected to the top of the movable block 22. A leveling roller 25 is rotatably connected to the bottom of the connecting rod 24. The leveling roller 25 is used to facilitate the leveling of wrinkles on the outside of the diaphragm roll.
[0039] Specifically, when installing the diaphragm roll onto the outside of the placement tray 2, firstly, the fixing plate 3 needs to be manually rotated. This causes the fixing plate 3 to rotate synchronously with the bolts 4 mounted on its exterior. This rotation disengages the fixing plate 3 from the outside of the placement tray 2, thus providing sufficient space for the roll installation. After removing the fixing plate 3, the pre-prepared diaphragm roll is installed onto the outside of the placement tray 2. Once the roll is successfully installed, its own weight and structural support will lift the leveling roller 25. Under the upward thrust from the outside of the roll, the leveling roller 25 rises. Simultaneously, the connecting rod 24 mounted on its top... As it moves upward, the connecting rod 24 further drives the top fixedly connected moving block 22 to move upward. During the upward movement of the moving block 22, it will exert a squeezing force on the spring 23 fixed on its upper part, causing the spring 23 to deform under the action of external force and enter the pre-tight state. As the equipment starts to unwind, the diameter of the roll will continuously decrease as the material is consumed. Under the continuous reaction force of the spring 23, the leveling roller 25 always maintains a close contact with the outer surface of the roll, ensuring that the wrinkles on the outside of the diaphragm roll can be leveled in real time during the entire unwinding process, avoiding processing quality problems caused by wrinkles, curling edges and other defects.
[0040] Reference Figures 1-4 A placement tray 2 is rotatably connected to the front of the unwinding frame 1. A fixing tray 3 is located on the right side of the placement tray 2. Bolts 4 are fixedly connected to the outside of the fixing tray 3 and are located inside the placement tray 2. The roll material is placed on the outside of the placement tray 2. A threaded hole 26 is opened on the front of the inside of the placement tray 2. The bolts 4 and the threaded hole 26 are threadedly connected to each other, which facilitates the installation and removal of the fixing tray 3. A mounting bracket 14 is fixedly connected to the outside of the horizontal plate 6. A motor 16 is installed on the outside of the mounting bracket 14. A gear 17 is fixedly connected to the output end of the motor 16. Rotary rotating parts are rotatably connected to both sides inside the mounting bracket 14. The lower rotating rod 19 has a gear 18 fixedly connected to its outer right side. Gear 17 and gear 18 mesh with each other. Guide rollers 20 are fixedly connected to the outside of both rotating rods 19. The guide rollers 20 facilitate the conveying of the diaphragm roll. The mounting frame 14 has a mounting ring 15 fixedly connected to its outside. The motor 16 is fixedly connected inside the mounting ring 15. The mounting ring 15 facilitates the fixation of the motor 16. Both guide rollers 20 are made of rubber, which can prevent the diaphragm surface from being crushed, scratched, or marked by hard rollers, thus improving the surface quality of the membrane material.
[0041] Specifically, when installing the diaphragm roll, firstly, rotate the rotating fixing plate 3 along with the externally fixed bolt 4, so that the bolt 4 disengages from the threaded hole 26 on the front side of the placement plate 2. Then, put the diaphragm roll on the outside of the placement plate 2. Finally, screw the fixing plate 3 and bolt 4 onto the outside of the placement plate 2 to complete the disassembly and assembly of the diaphragm roll. The operation is simple, time-saving and labor-saving. When conveying the roll, firstly, start the motor 16 to rotate the gear 17 fixed at the output end. The rotation of gear 17 rotates the gear 2 18 meshing at the lower part. When gear 17 and gear 2 18 rotate, they rotate the two internally fixed rotating rods 19. The rotation of the two rotating rods 19 rotates the two externally fixed guide rollers 20. The rotation of the two guide rollers 20 can continuously convey the diaphragm roll.
[0042] Working principle: During unwinding, the roll material is first placed outside the placement tray 2. Then, one end of the roll material is passed through the middle of the two cleaning rollers 12 and the two guide rollers 20. Then, the electric push rod 7 is activated. The electric push rod 7 moves the guide block 8 fixed at the output end. The movement of the guide block 8 moves the connecting plates 9 rotatably connected to the outer sides. The movement of the two connecting plates 9 moves the two sliders 11 rotatably connected to the bottom relative to each other outside the two fixed rods 10. When the two sliders 11 move relative to each other, they move the two cleaning rollers 12 fixed to the outside relative to each other. The relative movement of the two cleaning rollers 12 covers the outer sides of the roll material. Then, during the movement of the roll material, the two cleaning rollers 12 clean the outer sides of the roll material. This makes it easy to clean the outside of the diaphragm roll material during unwinding, and prevents impurities such as dust, oil, and static electricity particles from directly entering the subsequent processing, thereby improving the quality of the subsequent processing.
[0043] When installing the roll material on the outside of the placement tray 2, firstly, the fixing tray 3 is rotated, causing the external fixing bolts 4 to rotate, so that the fixing tray 3 is detached from the outside of the placement tray 2. Then, the roll material is installed on the outside of the placement tray 2. After the roll material is installed, the roll material will lift the leveling roller 25. The leveling roller 25 rises and moves the connecting rod 24 installed at the top upward. The connecting rod 24 moves upward and moves the moving block 22 fixed at the top. The moving block 22 compresses the spring 23 fixed at the top, causing the spring 23 to deform under force. Subsequently, during unwinding, the diameter of the roll material continuously decreases. At the same time, under the reaction force of the spring 23, the leveling roller 25 always adheres to the outside of the roll material. This facilitates the leveling of wrinkles on the outside of the diaphragm roll material during unwinding, avoids defects in subsequent processing, reduces the scrap rate, and improves the flatness and thickness consistency of the diaphragm material.
[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A kind of battery separator manufacturing unwinding device, it is characterized in that, Include: The unwinding frame (1); The horizontal plate (6) is fixedly connected to the outer left side of the unwinding frame (1); The electric push rod (7) is fixedly connected to the outer front side of the horizontal plate (6); The guide block (8) is fixedly connected to the output end of the electric push rod (7); Two fixed rods (10) and two sliding blocks (11) are fixedly connected to the inner two sides of the horizontal plate (6), and two sliding blocks (11) are slidingly connected to the outer sides of the two fixed rods (10); Two connecting plates (9) are rotatably connected to the outer two sides of the guide block (8) at the top, and the bottom of the two connecting plates (9) is rotatably connected to the outer side of the two sliding blocks (11); Two cleaning rollers (12) are installed on the outer left side of the two sliding blocks (11), and the two cleaning rollers (12) are oppositely arranged; And the leveling assembly is used for leveling the wrinkles of the coiled material.
2. The unwinding device for manufacturing a battery separator according to claim 1, characterized by: The leveling assembly includes a mounting block (5) fixedly connected to the top of the unwinding frame (1), an installation cavity (21) is formed in the inner side of the mounting block (5), a moving block (22) is slidingly connected in the installation cavity (21), a connecting rod (24) is fixedly connected to the bottom of the moving block (22), a spring (23) is fixedly connected to the top of the moving block (22), and a leveling roller (25) is rotatably connected to the bottom of the connecting rod (24).
3. The unwinding device for manufacturing a battery separator according to claim 1, characterized by: The unwinding frame (1) is rotatably connected to the outer front side of the unwinding frame (1), and the outer right side of the placing disc (2) is provided with a fixed disc (3). The fixed disc (3) is fixedly connected with a bolt (4) outside, the bolt (4) is arranged in the inner side of the placing disc (2), and the coiled material is placed outside the placing disc (2).
4. The unwinding device for manufacturing a battery separator according to claim 1, characterized by: The inner two sides of the horizontal plate (6) are provided with through holes (13), and the two sliding blocks (11) are slidingly connected in the inner sides of the two through holes (13).
5. The unwinding device for manufacturing a battery separator according to claim 1, characterized in that: The horizontal plate (6) is fixedly connected with a mounting bracket (14) outside, the mounting bracket (14) is provided with a motor (16) outside, the output end of the motor (16) is fixedly connected with a gear one (17), the inner two sides of the mounting bracket (14) are rotatably connected with rotating rods (19), the outer right side of the lower rotating rod (19) is fixedly connected with a gear two (18), the gear one (17) and the gear two (18) are engaged, and the outer sides of the two rotating rods (19) are fixedly connected with guide rollers (20).
6. The unwinding device for manufacturing a battery separator according to claim 5, wherein: The mounting bracket (14) is fixedly connected with a mounting ring (15) outside, and the motor (16) is fixedly connected in the inner side of the mounting ring (15).
7. The unwinding device for manufacturing a battery separator according to claim 3, characterized by: The inner front side of the placing disc (2) is provided with a threaded hole (26), and the bolt (4) is in threaded connection with the threaded hole (26).
8. The unwinding device for manufacturing a battery separator according to claim 5, wherein: The materials of the two guide rollers (20) are rubber.