Winding machine for lithium battery production

Abstract

According to the technical scheme, the winding machine for lithium battery production is characterized in that the winding machine comprises a winding frame, an installation table is fixedly installed on one side of the winding frame, a driving motor is fixedly installed on the inner circle wall face of the installation table, a rotating hole is formed in one side of the winding frame, a winding disc is arranged on the other side of the winding frame, and the driving motor is fixedly installed on the inner circle wall face of the installation table. A shaft of the driving motor is fixedly connected with the winding disc, and two winding rods are arranged on one side of the winding disc. By arranging the two-way lead screw, when the two winding rods are adjusted, a worker can rotate the adjusting head, the adjusting head drives the two-way lead screw to rotate, and a sliding block on the two-way lead screw drives the distance between the winding rods to be adjusted, so that the electrode plate winding device adapts to electrode plates of different thicknesses, and therefore in the using process, winding cores of different models do not need to be prepared; and meanwhile, the winding rod does not need to be replaced, the downtime can be shortened through rapid adjustment, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a winding machine for lithium battery production. Background Art

[0002] In the structure of lithium batteries, the separator is one of the key internal components. It is responsible for isolating the positive and negative electrodes of the lithium battery, preventing contact between the positive and negative electrodes and causing a short circuit in the lithium battery. The separator is also porous, allowing electrolyte ions to pass through. Because the electrolyte of lithium batteries is an organic solvent system, a separator material with organic solvent resistance is required. High-strength thin-film porous polyolefin membranes are generally used.

[0003] According to the Chinese patent application number: CN202320628391.6, a winding machine for lithium battery production is disclosed, which is used in the field of lithium battery production supplies. It includes a base with a frame installed on the top of the base. The utility model is equipped with a connecting plate on the electric telescopic rod, and cooperates with the rotating reel and the stepping motor installed on the connecting plate to achieve the work of winding the electrode sheet on the rotating reel. When unloading is required, the electrode sheet is pulled out from the rotating reel under the action of the limiting sleeve, and there is no need for manual extraction by the staff. It is highly practical and reduces labor. A support rod and a support spring are installed inside the sleeve. When the electrode sheet roll contacted by the pressure wheel installed inside the frame becomes thicker and thicker, the pressure wheel moves downward under the action of the support rod and the support spring and provides a reverse pressure, thereby achieving the purpose of compacting the electrode sheet roll and preventing the electrode sheet from loosening during the winding process.

[0004] At present, there are still some shortcomings in the winding machine used in lithium battery production. For example, the winding mechanism generally rotates the core shaft through a motor. When coils of different thicknesses are required during the production process, core shafts of different diameters often need to be replaced. The replacement steps are complicated and the downtime is long, which affects production efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a winding machine for lithium battery production, which solves the problems mentioned in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A winding machine for lithium battery production includes: a winding frame, a mounting platform fixedly mounted on one side of the winding frame, a driving motor fixedly mounted on the inner circular wall of the mounting platform, a rotating hole opened on one side of the winding frame, a winding disk provided on the other side of the winding frame, the shaft of the driving motor is fixedly connected to the winding disk, and two winding rods are provided on one side of the winding disk; an adjustment component, the adjustment component is arranged on one side of the winding disk and is used to adjust the distance between the two winding rods.

[0008] Preferably, the adjustment component includes: an adjustment slot, the adjustment slot is opened on one side of the winding drum, a bidirectional screw rod is rotatably installed on one side of the inner side of the adjustment slot, the external thread of the bidirectional screw rod is connected to two sliders, the sliders are fixedly connected to the winding rod, an adjustment hole is opened on the outer circular wall surface of the winding drum, an adjustment head is rotatably installed inside the adjustment hole, and the adjustment head is fixedly connected to the bidirectional screw rod.

[0009] Preferably, a limiting frame is provided at one end of the winding rod, a threaded rod is fixedly mounted at one end of the winding rod, the threaded rod passes through the limiting frame, and a nut is connected to the external thread of the threaded rod.

[0010] Preferably, a tensioning plate is fixedly mounted on one side of the winding frame, a mounting frame is provided on the bottom surface of the tensioning plate, and a pressing roller is rotatably mounted inside the mounting frame.

[0011] Preferably, a hydraulic cylinder is fixedly mounted on the top surface of the tensioning plate, a connecting hole is provided on the top surface of the tensioning plate, and the shaft of the hydraulic cylinder is fixedly connected to the mounting frame.

[0012] Preferably, a protective cover is fixedly adhered to the outside of the pressing roller.

[0013] In summary, the present invention has the following beneficial effects:

[0014] By setting up the winding rod, during use, the staff can adjust the spacing between the winding rods according to the thickness of the electrode sheet. The nut on the limit frame can be loosened first, and the adjusting head can be rotated. The adjusting head drives the bidirectional screw to rotate, and the slider on the bidirectional screw drives the spacing between the winding rods to be adjusted, and then the nut is tightened to fix it. The limit frame limits one end of the wound electrode sheet, effectively preventing the lateral sliding of the coil and reducing the offset or unevenness of the coil during the winding process. Therefore, during use, there is no need to prepare different types of winding cores and there is no need to replace the winding rod. Quick adjustment can reduce downtime and improve production efficiency.

[0015] By setting up a pressing roller, when the electrode sheet is wound onto the winding rod, it will pass through the pressing roller, which provides uniform pressing force to the electrode sheet, ensuring the tightness of the material during the winding process and avoiding looseness or wrinkles. The hydraulic cylinder is used to drive the pressing roller up and down to adjust the tension. Precise tension control can be applied to the diaphragm material during the winding process, thereby ensuring that the tension during the winding process is always in a stable and controllable state, preventing the coil from being too tight or too loose. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the disassembly structure of the mounting platform of the utility model;

[0018] Figure 3 This is a schematic diagram of the winding reel structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the tensioning plate structure of the utility model.

[0020] Figure numerals: 1. Winding frame; 2. Mounting platform; 3. Driving motor; 4. Rotating hole; 5. Winding reel; 6. Winding rod; 7. Adjusting slot; 8. Bidirectional screw rod; 9. Slider; 10. Adjusting hole; 11. Adjusting head; 12. Limiting frame; 13. Threaded rod; 14. Nut; 15. Tensioning plate; 16. Mounting frame; 17. Pressure roller; 18. Hydraulic cylinder; 19. Connecting hole; 20. Protective cover. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] refer to Figure 1-Figure 4 A winding machine for lithium battery production includes: a winding frame 1, a mounting platform 2 is fixedly mounted on one side of the winding frame 1, a driving motor 3 is fixedly mounted on the inner circular wall surface of the mounting platform 2, a rotating hole 4 is opened on one side of the winding frame 1, a winding disc 5 is provided on the other side of the winding frame 1, the shaft of the driving motor 3 is fixedly connected to the winding disc 5, and two winding rods 6 are provided on one side of the winding disc 5; an adjustment component is provided on one side of the winding disc 5 for adjusting the distance between the two winding rods 6;

[0023] By setting up the winding rods 6, during use, when it is necessary to wind electrode sheets of different thicknesses, the staff can adjust the spacing between the winding rods 6 by adjusting the components according to the thickness of the electrode sheets, so as to adapt to coils of different thicknesses.

[0024] As a further solution of the present utility model, the adjustment assembly includes: an adjustment slot 7, the adjustment slot 7 is opened on one side of the winding reel 5, a bidirectional screw rod 8 is rotatably installed on one side of the inner side of the adjustment slot 7, the outer side of the bidirectional screw rod 8 is connected to two sliders 9 by threads, the sliders 9 are fixedly connected to the winding rod 6, an adjustment hole 10 is opened on the outer circular wall surface of the winding reel 5, an adjustment head 11 is rotatably installed inside the adjustment hole 10, and the adjustment head 11 is fixedly connected to the bidirectional screw rod 8;

[0025] By setting up a bidirectional screw rod 8, when adjusting the two winding rods 6, the staff can rotate the adjusting head 11, and the adjusting head 11 drives the bidirectional screw rod 8 to rotate. The slider 9 on the bidirectional screw rod 8 drives the spacing between the winding rods 6 to adjust it to adapt to electrode sheets of different thicknesses. Therefore, during use, there is no need to prepare different types of winding cores, and there is no need to replace the winding rods 6. Quick adjustment can reduce downtime and improve production efficiency.

[0026] As a further solution of the present invention, a limit frame 12 is provided at one end of the winding rod 6, a threaded rod 13 is fixedly installed at one end of the winding rod 6, the threaded rod 13 passes through the limit frame 12, and a nut 14 is connected to the outer thread of the threaded rod 13;

[0027] By setting up the limit frame 12, when the winding rod 6 is adjusted, the nut 14 can be loosened to allow the winding rod 6 to slide on the limit frame 12. After sliding to a suitable position, the nut 14 is tightened to fix it. The limit frame 12 limits one end of the wound electrode sheet, effectively preventing the lateral sliding of the coil and reducing the offset or unevenness of the coil during the winding process.

[0028] As a further solution of the present invention, a tensioning plate 15 is fixedly mounted on one side of the winding frame 1, a mounting frame 16 is provided on the bottom surface of the tensioning plate 15, and a pressing roller 17 is rotatably mounted inside the mounting frame 16;

[0029] By setting up the pressing roller 17, when the electrode sheet is wound onto the winding rod 6, it will pass through the pressing roller 17, which provides uniform pressing force to the electrode sheet to ensure the tightness of the material during the winding process and avoid looseness or wrinkles.

[0030] As a further solution of the present invention, a hydraulic cylinder 18 is fixedly mounted on the top surface of the tensioning plate 15. A connecting hole 19 is opened on the top surface of the tensioning plate 15. The shaft of the hydraulic cylinder 18 is fixedly connected to the mounting frame 16.

[0031] By setting up a hydraulic cylinder 18 and utilizing the hydraulic cylinder 18 to drive the pressing roller 17 to stretch up and down and adjust the tension, precise tension control can be applied to the diaphragm material during the winding process, thereby ensuring that the tension during the winding process is always in a stable and controllable state, preventing the coil from being too tight or too loose.

[0032] As a further solution of the present invention, a protective cover 20 is fixedly adhered to the outside of the pressing roller 17;

[0033] By providing the protective cover 20 , which is made of rubber, when the pressing roller 17 presses the electrode sheet, the external protective cover 20 prevents the electrode sheet from being excessively pressed and thus damaged.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A winding machine for lithium battery production, characterized in that: include: A winding frame (1), a mounting platform (2) is fixedly mounted on one side of the winding frame (1), a driving motor (3) is fixedly mounted on the inner circular wall of the mounting platform (2), a rotating hole (4) is opened on one side of the winding frame (1), a winding reel (5) is provided on the other side of the winding frame (1), the shaft of the driving motor (3) is fixedly connected to the winding reel (5), and two winding rods (6) are provided on one side of the winding reel (5); An adjusting component is provided on one side of the winding drum (5) and is used for adjusting the distance between the two winding rods (6).

2. A winding machine for lithium battery production according to claim 1, characterized in that: The adjustment component includes: An adjusting groove (7) is provided on one side of the winding drum (5); a bidirectional screw rod (8) is rotatably mounted on one side of the adjusting groove (7); two sliders (9) are connected to the external threads of the bidirectional screw rod (8); the sliders (9) are fixedly connected to the winding rod (6); an adjusting hole (10) is provided on the outer circular wall surface of the winding drum (5); an adjusting head (11) is rotatably mounted inside the adjusting hole (10); the adjusting head (11) is fixedly connected to the bidirectional screw rod (8).

3. A winding machine for lithium battery production according to claim 2, characterized in that: A limiting frame (12) is provided at one end of the winding rod (6), a threaded rod (13) is fixedly installed at one end of the winding rod (6), the threaded rod (13) passes through the limiting frame (12), and the external thread of the threaded rod (13) is connected to a nut (14).

4. A winding machine for lithium battery production according to claim 1, characterized in that: A tensioning plate (15) is fixedly mounted on one side of the winding frame (1), a mounting frame (16) is provided on the bottom surface of the tensioning plate (15), and a pressing roller (17) is rotatably mounted inside the mounting frame (16).

5. A winding machine for lithium battery production according to claim 4, characterized in that: A hydraulic cylinder (18) is fixedly mounted on the top surface of the tensioning plate (15), a connecting hole (19) is provided on the top surface of the tensioning plate (15), and the shaft of the hydraulic cylinder (18) is fixedly connected to the mounting frame (16).

6. A winding machine for lithium battery production according to claim 4, characterized in that: A protective cover (20) is fixedly adhered to the outside of the pressing roller (17).

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