Winding mechanism of winding equipment

Abstract

The utility model relates to a winding mechanism of winding equipment, which comprises a base, a base, a spring structure, an inner needle structure, a guide rail, a lock nozzle, a slider, a push block and an outer needle, the base is fixedly arranged on the base, the inner needle structure is mounted on the base, the spring structure is mounted between the inner needle structure and the outer needle, the guide rail is fixedly arranged on the inner needle structure, the push block is fixedly arranged at the end of the outer needle, and the lock nozzle is arranged on the guide rail. The sliding block is fixedly arranged on the inner surface of the outer needle, the sliding block and the pushing block move along the guide rail, and the locking mouth pushes the pushing block to move to drive the sliding block and the pushing block to move along the guide rail so as to drive the outer needle to move relative to the inner needle structure. According to the winding mechanism of the winding equipment, the locking nozzle pushes the pushing block to move and drives the sliding block and the pushing block to move along the guide rail, so that the outer needle moves along the inclined step and is driven to be gradually far away from the inner needle, and the diameter and the perimeter of the winding needle are changed to eliminate the distance difference between tabs; the situation that the produced lithium battery cell does not meet the requirement and is scrapped due to the fact that the edges of the tabs are not aligned is avoided, the production quality of the cell can be guaranteed, 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 device rolling mechanism. Background Art

[0002] During the manufacturing process of lithium battery cells, the pole piece and the diaphragm are rolled into a battery cell according to certain requirements through a series of actions of the winding head module. The alignment of the pole tabs on the pole piece is an important parameter of the battery cell quality. Sometimes, due to the difference in the thickness of the pole piece, the positive and negative pole tabs on the side of the battery cell are not aligned, causing the lithium battery cell produced to fail to meet the requirements and be scrapped. Changing the circumference of the winding needle is a way to align the pole tabs.

[0003] At present, the winding needles used in the lithium battery industry or other winding industries are fixed, which will result in the winding diameter being fixed; when the winding diameter needs to be adjusted, the winding needle can only be increased or decreased by replacing the winding needle or sticking a film on the winding needle, but this method is very time-consuming and labor-intensive, and the adjustment accuracy is very low, thus affecting the production quality of the battery cell and the overall production efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a winding device winding mechanism to solve the above technical problems. When the pole ears are not aligned, the mechanism can eliminate the distance difference between the pole ears by quickly changing the circumference of the winding needle, thereby aligning the pole ears, ensuring the production quality of the battery cell and improving production efficiency.

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

[0006] A winding mechanism of a winding device includes a base, a pedestal, a spring structure, an inner needle structure, a guide rail, a locking mouth, a slider, a push block and an outer needle, wherein the base is fixedly mounted on the base, the inner needle structure is installed on the base, the spring structure is installed between the inner needle structure and the outer needle, the guide rail is fixedly mounted on the inner needle structure, the push block is fixedly mounted on the end of the outer needle, the slider is fixedly mounted on the inner surface of the outer needle, the slider and the push block move along the guide rail, the locking mouth pushes the push block to move, and drives the slider and the push block to move along the guide rail, so as to drive the outer needle to move relative to the inner needle structure.

[0007] As a preferred technical solution, the inner needle structure includes an inner needle seat, an inner needle, a hinge plate and an inner needle spring, the inner needle seat is fixed on the base, the hinge plate is hinged to the inner needle seat, the inner needle is hinged to the hinge plate, the inner needle spring is installed on the inner needle seat, and the inner needle spring is respectively abutted against the inner needle and the inner needle seat.

[0008] As a preferred technical solution, an inclined step is provided on the inner needle seat, and the guide rail is fixed on the inclined step.

[0009] As a preferred technical solution, the spring structure includes a first fixed column, a return spring and a second fixed column, the first fixed column is fixed on the inner needle seat, the second fixed column is fixed on the outer needle, and the two ends of the return spring are respectively fixed on the first fixed column and the second fixed column.

[0010] As a preferred technical solution, it further includes a driving structure, which is installed on the base and drives the inner needle to move.

[0011] As a preferred technical solution, the driving structure includes a cylinder and an ejector pin, the cylinder is mounted on the base, the ejector pin passes through the base and abuts against the inner needle, and the cylinder drives the ejector pin to move.

[0012] The beneficial effects of the utility model are: the above-mentioned winding device rolling mechanism, the locking mouth pushes the push block to move, driving the slider and the push block to move along the guide rail, so that the spring structure is stretched, and the outer needle moves along the inclined step, thereby driving the outer needle to gradually move away from the inner needle, so as to change the diameter and circumference of the winding needle to eliminate the distance difference between the pole ears, so as to align the pole ears, avoid the lithium battery cells produced due to the misalignment of the pole ear edges not meeting the requirements and being scrapped, can ensure the quality of cell production, improve production efficiency, and are provided with an inner needle structure and a driving structure, the driving structure can drive the inner needle structure to clamp the end of the diaphragm to facilitate the winding of the winding needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the winding mechanism of the winding equipment 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 1As shown, a winding device winding mechanism includes a base 1, a base 2, a spring structure 7, an inner needle structure 3, a guide rail 4, a locking mouth 9, a slider 5, a driving structure 8, a push block 10 and an outer needle 6. The base 2 is fixed on the base 1, the inner needle structure 3 is installed on the base 2, the spring structure 7 is installed between the inner needle structure 3 and the outer needle 6, the guide rail 4 is fixed on the inner needle structure 3, the push block 10 is fixed on the end of the outer needle 6, the slider 5 is fixed on the inner surface of the outer needle 6, the slider 5 and the push block 10 move along the guide rail 4, the locking mouth 9 pushes the push block 10 to move, and drives the slider 5 and the push block 10 to move along the guide rail 4, so as to drive the outer needle 6 to move relative to the inner needle structure 3, thereby realizing the change of the outer diameter of the winding needle, and the driving structure 10 drives the inner needle structure 3 to move, thereby clamping the diaphragm.

[0016] Specifically, the inner needle structure 3 includes an inner needle seat 31, an inner needle 32, a hinge plate 33 and an inner needle spring 34. The inner needle seat 31 is fixed on the base 2, the hinge plate 33 is hinged to the inner needle seat 31, the inner needle 32 is hinged to the hinge plate 33, the inner needle spring 34 is installed on the inner needle seat 31, and the inner needle spring 34 abuts against the inner needle 32 and the inner needle seat 31 respectively. The driving structure 8 includes a cylinder 81 and an ejector pin 82. The cylinder 81 is installed on the base 1. The ejector pin 82 passes through the base 2 and abuts against the inner needle 32. The cylinder 81 drives the inner needle 31 to move. The movable ejector pin 82 moves. When the diaphragm needs to be clamped, the cylinder 81 drives the ejector pin 82 to reset, and the inner needle spring 34 pushes the inner needle 32 to move relative to the inner needle seat 31, so that the two inner needles 32 abut against each other to clamp the diaphragm between the two inner needles 32. When the diaphragm needs to be loosened, the cylinder 81 drives the ejector pin 82 to extend, and the ejector pin 82 abuts against the end of the inner needle 32. Since the end of the ejector pin 82 is tapered, the inner needle 32 gradually approaches the inner needle seat 31, and the inner needle spring 34 is gradually compressed to open the inner needle 32. An inclined step 35 is provided on the inner needle seat 31, and the guide rail 4 is fixed on the inclined step 35. The lock mouth 9 pushes the push block 10 to move, driving the slider 5 and the push block 10 to move along the guide rail 4, so that the spring structure 7 is stretched, and the outer needle 6 moves along the inclined step 35, thereby driving the outer needle 6 to gradually move away from the inner needle 32, thereby changing the outer diameter of the winding needle.

[0017] Specifically, the spring structure 7 includes a first fixed column 71, a reset spring 72 and a second fixed column 73. The first fixed column 71 is fixed on the inner needle seat 31, the second fixed column 73 is fixed on the outer needle 6, and both ends of the reset spring 72 are respectively fixed on the first fixed column 71 and the second fixed column 72 for resetting the outer needle 6.

[0018] The beneficial effects of the utility model are: the above-mentioned winding device rolling mechanism, the locking mouth pushes the push block to move, driving the slider and the push block to move along the guide rail, so that the spring structure is stretched, and the outer needle moves along the inclined step, thereby driving the outer needle to gradually move away from the inner needle, so as to change the diameter and circumference of the winding needle to eliminate the distance difference between the pole ears, so as to align the pole ears, avoid the lithium battery cells produced due to the misalignment of the pole ear edges not meeting the requirements and being scrapped, can ensure the quality of cell production, improve production efficiency, and are provided with an inner needle structure and a driving structure, the driving structure can drive the inner needle structure to clamp the end of the diaphragm to facilitate the winding of the winding needle.

[0019] 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 winding device roll-up mechanism, characterized in that: It includes a base, a pedestal, a spring structure, an inner needle structure, a guide rail, a locking mouth, a slider, a push block and an outer needle, the base is fixed on the base, the inner needle structure is installed on the base, the spring structure is installed between the inner needle structure and the outer needle, the guide rail is fixed on the inner needle structure, the push block is fixed on the end of the outer needle, the slider is fixed on the inner surface of the outer needle, the slider and the push block move along the guide rail, the locking mouth pushes the push block to move, and drives the slider and the push block to move along the guide rail, so as to drive the outer needle to move relative to the inner needle structure.

2. The winding device reeling mechanism according to claim 1, characterized in that: The inner needle structure includes an inner needle seat, an inner needle, a hinge plate and an inner needle spring. The inner needle seat is fixed on the base, the hinge plate is hinged to the inner needle seat, the inner needle is hinged to the hinge plate, the inner needle spring is installed on the inner needle seat, and the inner needle spring is respectively in contact with the inner needle and the inner needle seat.

3. The winding device reeling mechanism according to claim 2, characterized in that: The inner needle seat is provided with an inclined step, and the guide rail is fixed on the inclined step.

4. The winding device reeling mechanism according to claim 3, characterized in that: The spring structure includes a first fixing column, a return spring and a second fixing column. The first fixing column is fixed to the inner needle seat, the second fixing column is fixed to the outer needle, and both ends of the return spring are respectively fixed to the first fixing column and the second fixing column.

5. The winding device reeling mechanism according to claim 4, characterized in that: It further comprises a driving structure, which is installed on the base and drives the inner needle to move.

6. The winding device reeling mechanism according to claim 5, characterized in that: The driving structure comprises a cylinder and an ejector pin. The cylinder is mounted on the base. The ejector pin passes through the base and abuts against the inner pin. The cylinder drives the ejector pin to move.

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