Multi-station winding mechanism

Abstract

The utility model relates to a multi-station winding mechanism which comprises winding needle assemblies, a rotating disc, a rotating disc and a rotating assembly, the four winding needle assemblies are sequentially installed between the rotating disc and the rotating disc, the rotating disc and the rotating disc are rotationally arranged on a rack, the rotating assembly drives the rotating disc to rotate, and the rotating assembly drives the rotating disc to rotate. The winding needle assembly comprises a winding motor, a transmission unit, a fixed shaft, a connecting plate and a winding needle unit, the fixed shaft is fixedly arranged between the rotating disc and the rotating disc, the fixed shaft is connected with the transmission unit and the winding needle unit through the connecting plate, the transmission unit is connected with the winding needle unit, and the winding motor drives the transmission unit to rotate and drives the winding needle unit to rotate. According to the multi-station winding mechanism, the 1-4 winding needle units can be arranged according to the breadth of the pole piece, so that the multi-station winding process is realized, the production efficiency is improved, each winding needle unit can be independently disassembled and is convenient to disassemble and assemble, a wide winding needle can be quickly changed to wind a wide battery cell, and the winding requirements of different types of battery cells are met.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a multi-station winding mechanism. Background Art

[0002] As the utilization rate of lithium-ion batteries continues to increase, the market demand for them is growing rapidly. Therefore, the requirements for the production capacity and product quality of lithium-ion batteries are also increasing. At the same time, different types of lithium-ion battery automatic winding machines have also appeared on the market.

[0003] The cell of a lithium-ion battery is wound with positive and negative electrodes and two diaphragms. The production speed of lithium batteries depends largely on the speed of winding, so the winding head is a relatively important working component in the lithium battery automatic winding machine. In the past, the turntable of the winding head assembly was formed by casting, and then the next step of fine processing was carried out. This process is not only cumbersome, but the winding needle slide used to support the winding head must be installed on the turntable through a guide rail to allow the winding needle to work. This is inconvenient for the installation of the winding needle and inconvenient for adjustment. Utility Model Content

[0004] The main purpose of the utility model is to provide a multi-station winding mechanism to solve the above technical problems and realize the winding process at multiple stations to improve production efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-station winding mechanism includes a winding needle assembly, a rotating disk, a turntable and a rotating assembly, wherein four winding needle assemblies are installed in order between the rotating disk and the turntable, the rotating disk and the turntable are rotatably arranged on a frame, and the rotating assembly drives the rotating disk to rotate, and the winding needle assembly includes a winding motor, a transmission unit, a fixed shaft, a connecting plate and a winding needle unit, the fixed shaft is fixed between the turntable and the rotating disk, the fixed shaft is connected to the transmission unit and the winding needle unit through the connecting plate, the transmission unit is connected to the winding needle unit, and the winding motor drives the transmission unit to rotate, thereby driving the winding needle unit to rotate.

[0007] As a preferred technical solution, the transmission unit includes a transmission shaft and a transmission gear, the transmission gear is fixed to the transmission shaft, and the transmission shaft passes through the rotating disk and the connecting plate in sequence.

[0008] As a preferred technical solution, the needle winding unit includes a needle winding shaft, a needle winding and a gear sleeve, the gear sleeve is rotatably arranged on the connecting plate, the needle winding is installed on the needle winding shaft, and the gear sleeve is detachably arranged at both ends of the needle winding shaft.

[0009] As a preferred technical solution, the rotating assembly includes a rotating motor and a rotating gear, the rotating gear is engaged with the rotating disk, and the rotating motor drives the rotating gear to rotate.

[0010] The beneficial effect of the utility model is that the above-mentioned multi-station winding mechanism can set 1-4 winding needle units according to the width of the electrode sheet, so as to realize multi-station winding process to improve production efficiency, and each winding needle unit can be disassembled independently for easy disassembly and assembly, and a wide-width winding needle can be quickly replaced to wind wide-width battery cells to meet the winding requirements of different types of battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the multi-station winding mechanism involved in the utility model;

[0012] Figure 2 It is a side view of the multi-station winding mechanism involved in the utility model;

[0013] Figure 3 It is a front view of the multi-station winding mechanism involved in the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0015] like Figure 1-3 As shown, a multi-station winding mechanism includes a winding needle assembly 3, a rotating disk 1, a rotating disk 2 and a rotating assembly 4. The rotating disk 1 and the rotating disk 2 can be rotatably installed on a frame. Four winding needle assemblies 3 are equidistantly installed between the rotating disk 1 and the rotating disk 2. The rotating disk 1 and the rotating disk 2 are used to support the winding needle assembly 3. The winding needle assembly 3 is driven. The first diaphragm d, the positive electrode sheet c, the second diaphragm b and the negative electrode sheet a are wound on the winding needle assembly 3 to form a battery cell. The rotating assembly 4 drives the rotating disk 2 to rotate, so as to drive the winding needle assembly 3 to switch between the winding station, the gluing station, the unloading station and the loading station.

[0016] The winding needle assembly 3 includes a winding motor 31, a transmission unit 33, a fixed shaft 32, a connecting plate 35 and a winding needle unit 34. The fixed shaft 32 is fixed between the turntable 2 and the rotating disk 3. The fixed shaft 32 is connected to the transmission unit 33 and the winding needle unit 34 through the connecting plate 35. The winding needle unit 34 is installed between the two connecting plates 35. In the present embodiment, four winding needle units 34 are provided. In particular, the number of winding needle units 34 can be set according to the width of the electrode sheet. 1-4 conventional battery cells or one wide battery cell can be wound at the same time. The transmission unit 33 is connected to the winding needle unit 34. The winding motor 31 drives the transmission unit 33 to rotate, thereby driving the winding needle unit 34 to rotate.

[0017] The transmission unit 33 includes a transmission shaft 331 and a transmission gear 332 . The transmission gear 332 is fixed to the transmission shaft 331 . The transmission shaft 331 passes through the rotating disk 1 and the connecting plate 35 in sequence. The transmission shaft 331 rotates relative to the rotating disk and the connecting plate 35 .

[0018] The needle winding unit 34 includes a needle winding shaft 342 , a needle winding 341 and a gear sleeve 343 . The gear sleeve 343 is rotatably disposed on the connecting plate 35 . The needle winding 341 is mounted on the needle winding shaft 342 . The gear sleeve 343 is detachably disposed on both ends of the needle winding shaft 342 .

[0019] The rotating assembly 4 includes a rotating motor 41 and a rotating gear 42. The rotating gear 42 is meshed with the rotating disk 2. The rotating motor 41 drives the rotating gear 42 to rotate, thereby driving the winding needle assembly 3 to switch between different workstations.

[0020] Before use, the multi-station winding mechanism is configured to set the number of conventional winding needle units 34 according to the current electrode width or to set a winding needle unit 34 that can wind wide electrode sheets. The winding needle unit 34 is installed between two connecting plates 35 in the loading station. The rotating assembly 4 drives the rotating disk 1 to rotate, so that the winding needle assembly 3 is rotated to the winding station. The first diaphragm d, the positive electrode sheet c, the second diaphragm b and the negative electrode sheet a are wound on the winding needle assembly 3 located on the winding station to form a battery cell. The rotating assembly 4 drives the rotating disk 1 to rotate, so that the winding needle assembly 3 is rotated to the gluing station. After cutting the diaphragm, the battery cell is glued. After the gluing is completed, the rotating assembly 4 drives the rotating disk 1 to rotate, so that the winding needle assembly 3 is rotated to the unloading station, and the winding needle unit 34 is removed from the connecting plate 35 to complete a winding.

[0021] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A multi-station winding mechanism, characterized in that: The invention comprises a winding needle assembly, a rotating disk, a turntable and a rotating assembly, wherein four winding needle assemblies are orderly installed between the rotating disk and the turntable, the rotating disk and the turntable are rotatably arranged on a frame, and the rotating assembly drives the rotating disk to rotate, and the winding needle assembly comprises a winding motor, a transmission unit, a fixed shaft, a connecting plate and a winding needle unit, the fixed shaft is fixed between the turntable and the rotating disk, the fixed shaft is connected to the transmission unit and the winding needle unit through the connecting plate, the transmission unit is connected to the winding needle unit, and the winding motor drives the transmission unit to rotate, thereby driving the winding needle unit to rotate.

2. The multi-station winding mechanism according to claim 1, characterized in that: The transmission unit includes a transmission shaft and a transmission gear. The transmission gear is fixed to the transmission shaft. The transmission shaft passes through the rotating disk and the connecting plate in sequence.

3. The multi-station winding mechanism according to claim 1, characterized in that: The needle winding unit comprises a needle winding shaft, a needle winding and a gear sleeve. The gear sleeve is rotatably arranged on the connecting plate. The needle winding is mounted on the needle winding shaft. The gear sleeve is detachably arranged on both ends of the needle winding shaft.

4. The multi-station winding mechanism according to claim 1, characterized in that: The rotating assembly includes a rotating motor and a rotating gear. The rotating gear is meshed with the rotating disk, and the rotating motor drives the rotating gear to rotate.

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