Winding perimeter adjusting mechanism of winding equipment

Abstract

The utility model relates to a mechanism for adjusting the winding perimeter of winding equipment, which comprises a base, a base, a spring structure, an inner needle structure, a guide rail, a jacking plate, a lock nozzle, a push block, a needle seat and an outer needle, the base is fixedly arranged on the base, the spring structure and the inner needle structure are arranged on the base, the guide rail is fixedly arranged on the inner needle structure, the jacking plate moves along the guide rail, and the lock nozzle is arranged on the push block. The jacking plate abuts against the spring structure, the outer needle and the needle base are fixedly arranged, and the push block is fixedly arranged at the end of the jacking plate. According to the winding equipment winding perimeter adjusting mechanism, the locking nozzle drives the pushing block to move, the jacking plate is driven to move along the guide rail, the rolling wheel rolls along the inclined groove, the spring structure is compressed, then the outer needle is driven to move close to the jacking plate along the guide structure, and therefore the outer needle is jacked up; the distance difference between the tabs is eliminated by changing the diameter and the perimeter of the winding needle, so that the tabs are aligned, 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 circumference adjustment 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 with a circumference adjustment mechanism to solve the above-mentioned 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 device rolling circumference adjustment mechanism includes a base, a pedestal, a spring structure, an inner needle structure, a guide rail, a lifting plate, a locking mouth, a push block, a needle seat and an outer needle, wherein the base is fixed on the base, the spring structure and the inner needle structure are installed on the base, the guide rail is fixed on the inner needle structure, the lifting plate moves along the guide rail, the lifting plate abuts against the spring structure, the outer needle is fixed to the needle seat, the push block is fixed on the end of the lifting plate, a roller is provided on the needle seat, an oblique groove on the lifting plate is provided for the roller to roll, the locking mouth pushes the push block to move, drives the lifting plate to move along the guide rail, the roller rolls along the oblique groove, drives the outer needle to move relative to the lifting plate.

[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 in contact with the inner needle and the guide rail.

[0008] As a preferred technical solution, it further includes a driving structure, which is installed on the base and drives the inner needle to move.

[0009] 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.

[0010] As a preferred technical solution, the spring structure includes a spring seat and a push spring, the spring seat is fixed on the base, one end of the push spring is fixed on the spring seat, and the other end is in contact with the lifting plate.

[0011] As a preferred technical solution, it further includes a guide structure, which is installed between the needle seat and the inner needle structure.

[0012] As a preferred technical solution, the guide structure includes a guide rod and a guide sleeve, the guide sleeve is fixed on the inner needle seat, the guide rod is fixed on the needle seat, and the guide rod is inserted into the guide sleeve.

[0013] As a preferred technical solution, it further includes a return spring, one end of which is fixed on the needle seat, and the other end of which is fixed on the inner needle seat.

[0014] The beneficial effects of the utility model are as follows: the winding device has a rolling circumference adjustment mechanism, which drives the push block to move through the lock mouth, drives the lifting plate to move along the guide rail, and the roller rolls along the inclined groove to compress the spring structure, thereby driving the outer needle to move closer to the lifting plate along the guide structure, thereby lifting the outer needle to change the diameter and circumference of the winding needle to eliminate the distance difference between the pole ears, thereby aligning the pole ears, avoiding the lithium battery cells produced not meeting the requirements and being scrapped due to the misalignment of the pole ear edges, ensuring the quality of cell production, and improving production efficiency, and is 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

[0015] Figure 1 It is a cross-sectional view of the winding circumference adjustment mechanism of the winding equipment involved in the utility model. DETAILED DESCRIPTION

[0016] 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.

[0017] like Figure 1 As shown, a winding device rolling circumference adjustment mechanism includes a base 1, a base 2, a spring structure 11, an inner needle structure 3, a guide rail 4, a lifting plate 5, a locking mouth 9, a push block 8, a needle seat 6, an outer needle 7, a driving structure 10, a guide structure 12 and a reset spring 13. The base 2 and the driving structure 10 are fixed on the base 1, the spring structure 11 and the inner needle structure 3 are fixed on the base 2, the guide rail 4 is fixed on the inner needle structure 3, the lifting plate 5 moves along the guide rail 4, the lifting plate 5 abuts against the spring structure 11, the outer needle 7 is fixed to the needle seat 6, the push block 8 is fixed to the end of the lifting plate 5, the needle seat 6 is provided with a roller 61, and the lifting plate 5 is provided with a roller 62. The inclined groove 51 on the lifting plate 5 can be used for the roller 61 to roll, and the guide structure 12 is installed between the needle seat 6 and the inner needle structure 3, and is used to guide the movement of the outer needle 7. One end of the return spring 13 is fixed on the needle seat 6, and the other end is fixed on the inner needle structure 3, which can make the roller 61 always close to the inclined groove 51. The locking mouth 9 pushes the push block 8 to move, and drives the lifting plate 5 to move along the guide rail 4. The roller 61 rolls along the inclined groove 51, compressing the spring structure 11, and driving the outer needle 7 to move along the guide structure 12 relative to the lifting plate 5, thereby changing the outer diameter of the winding needle, and the driving structure 10 drives the inner needle structure 3 to move, thereby clamping the diaphragm.

[0018] 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 is respectively abutted against the inner needle 32 and the guide rail 4. The driving structure 10 includes a cylinder 101 and a push pin 102. The cylinder 101 is installed on the base 1. The push pin 102 passes through the base 2 and abuts against the inner needle 32. The cylinder 101 drives The ejector pin 102 moves. When the diaphragm needs to be clamped, the cylinder 101 drives the ejector pin 102 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 located between the two inner needles 32. When the diaphragm needs to be loosened, the cylinder 101 drives the ejector pin 102 to extend, and the ejector pin 102 abuts against the end of the inner needle 32. Since the end of the ejector pin 102 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.

[0019] Specifically, the spring structure 11 includes a spring seat 111 and a push spring 112. The spring seat 111 is fixed on the base 2. One end of the push spring 112 is fixed on the spring seat 111, and the other end is in contact with the lifting plate 5. When the lock mouth 9 is away from the push block 8, the push spring 112 is reset, pushing the lifting plate 5 to move along the guide rail 4, and the roller 61 rolls along the oblique groove 51, driving the outer needle 7 to move away from the lifting plate 5 along the guide structure 12, so that the position of the outer needle 7 is reset.

[0020] Specifically, the guide structure 12 includes a guide rod 122 and a guide sleeve 121. The guide sleeve 121 is fixed on the inner needle seat 31, and the guide rod 122 is fixed on the needle seat 6. The guide rod 122 is inserted into the guide sleeve 121 to guide the movement of the outer needle 7.

[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 winding device roll-up circumference adjustment mechanism, characterized in that: It includes a base, a pedestal, a spring structure, an inner needle structure, a guide rail, a lifting plate, a locking mouth, a push block, a needle seat and an outer needle. The base is fixed on the base, the spring structure and the inner needle structure are installed on the base, the guide rail is fixed on the inner needle structure, the lifting plate moves along the guide rail, the lifting plate abuts against the spring structure, the outer needle is fixed to the needle seat, the push block is fixed on the end of the lifting plate, a roller is provided on the needle seat, the lifting plate has an oblique groove for the roller to roll, the locking mouth pushes the push block to move, drives the lifting plate to move along the guide rail, the roller rolls along the oblique groove, drives the outer needle to move relative to the lifting plate.

2. The winding device roll-up circumference adjustment 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 guide rail.

3. The winding device roll-up circumference adjustment mechanism according to claim 2, characterized in that: It further comprises a driving structure, which is installed on the base and drives the inner needle to move.

4. The winding device roll-up circumference adjustment mechanism according to claim 3, 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.

5. The winding device roll-up circumference adjustment mechanism according to claim 2, characterized in that: The spring structure comprises a spring seat and a push spring. The spring seat is fixed on the base. One end of the push spring is fixed on the spring seat, and the other end is in contact with the lifting plate.

6. The winding device roll-up circumference adjustment mechanism according to claim 2, characterized in that: It further comprises a guide structure, which is installed between the needle seat and the inner needle structure.

7. The winding device roll-up circumference adjustment mechanism according to claim 6, characterized in that: The guide structure comprises a guide rod and a guide sleeve, wherein the guide sleeve is fixedly arranged on the inner needle seat, the guide rod is fixedly arranged on the needle seat, and the guide rod is passed through the guide sleeve.

8. The winding device roll-up circumference adjustment mechanism according to claim 2, characterized in that: It further comprises a return spring, one end of which is fixed on the needle seat, and the other end of which is fixed on the inner needle seat.

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