Winding needle mechanism of battery cell winding machine

Abstract

The utility model discloses a winding needle mechanism of a battery cell winding machine, which comprises a winding needle assembly, an inserting piece and a winding needle fixing head, and further comprises a first cylinder, a second cylinder, a third cylinder and a push rod which are sequentially arranged from outside to inside, and the first cylinder, the second cylinder, the third cylinder and the push rod do not rotate relative to one another; the winding needle fixing head is inserted into the front end of the second cylinder body; the winding needle assembly comprises two main winding needles, each main winding needle is connected with a sliding block, and each sliding block is provided with an elastic element; and the third cylinder body is connected with the insertion piece. According to the winding needle mechanism of the battery cell winding machine, the good parallelism between the inserting piece and the winding needle assembly can be always kept in the actual operation process, and the winding quality of a battery cell is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core winding, in particular to a winding needle mechanism of a battery core winding machine. Background Art

[0002] The winding needle mechanism of a battery cell winding machine usually includes a winding needle and an insert, which is used to leave a certain amount of space inside the battery cell after the battery cell is wound. In the prior art, the structure of the winding needle mechanism is relatively complex, and during actual operation, it is difficult to ensure good flatness of the insert and the winding needle during extraction and withdrawal, thereby affecting the battery cell winding effect. In view of the above technical problems, the present application proposes a winding needle mechanism for a battery cell winding machine. By providing a first cylinder, a second cylinder, a third cylinder, and a push rod, etc., not only is the winding needle mechanism structure simple, but the insert and the winding needle maintain good parallelism during operation. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a winding needle mechanism for a battery cell winding machine, aiming to solve the technical problems in the prior art that the winding needle mechanism has a complex structure and it is difficult to ensure good flatness of the insert and the winding needle during extraction and pulling.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A winding needle mechanism of a battery cell winding machine includes a winding needle assembly, an insert, and a winding needle fixing head, and the rear ends of the winding needle assembly and the insert are respectively inserted into the winding needle fixing head; the winding needle mechanism of the battery cell winding machine also includes a first cylinder, a second cylinder, a third cylinder and a push rod arranged in sequence from the outside to the inside, and the first cylinder, the second cylinder, the third cylinder and the push rod do not rotate relative to each other; the front end of the second cylinder is inserted into the winding needle fixing head; the winding needle assembly includes two main winding needles, each main winding needle is connected to a slider, and each slider is provided with an elastic element; the third cylinder is connected to the insert.

[0006] Furthermore, in the winding needle mechanism of the battery cell winding machine, a winding needle sheet is detachably connected to the outer side of each main winding needle.

[0007] Furthermore, in the winding needle mechanism of the battery cell winding machine, the second cylinder is provided with a first guide groove along its length direction, and the first cylinder is provided with a first guide block, one end of the first guide block is inserted into the first guide groove.

[0008] Furthermore, in the winding needle mechanism of the battery cell winding machine, the third cylinder is provided with a second guide groove along its length direction, and the second cylinder is provided with a second guide block, one end of the second guide block is inserted into the second guide groove.

[0009] Furthermore, in the winding needle mechanism of the battery cell winding machine, the second guide groove is a through groove, the push rod is provided with a third guide groove along its length direction, and one end of the second guide block is inserted into the third guide groove.

[0010] Furthermore, in the winding needle mechanism of the battery cell winding machine, an insert guide block is provided in the winding needle fixing head, and the insert passes through the insert guide block.

[0011] Furthermore, in the winding needle mechanism of the battery cell winding machine, each slider is respectively provided with a roller.

[0012] Furthermore, in the winding needle mechanism of the battery cell winding machine, the front end of the push rod is tapered.

[0013] Furthermore, in the winding needle mechanism of the battery cell winding machine, the elastic element is a spring; each slider is provided with a spring hole, and the winding needle fixing head is provided with a spring baffle, one end of the spring is inserted into the corresponding spring hole, and the other end is against the corresponding spring baffle.

[0014] Beneficial Effects: The present invention provides a winding needle mechanism for a battery cell winding machine. Compared to existing technologies, the present invention comprises, from the outside in, a first barrel, a second barrel, a third barrel, and a push rod. These first, second, third barrels, and push rod do not rotate relative to each other. This arrangement not only simplifies the structure but also ensures that the insert and winding needle assembly maintain good parallelism during operation, further guaranteeing the quality of battery cell winding. The provision of a slider, spring element, and other structures ensures that the winding needle assembly can smoothly perform its "opening" and "closing" functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the winding needle mechanism of the battery cell winding machine.

[0016] Figure 2 The three-dimensional needle mechanism of the battery winding machine Figure 1 .

[0017] Figure 3 The three-dimensional needle mechanism of the battery winding machine Figure 2 .

[0018] Figure 4 It is a three-dimensional diagram of the third cylinder.

[0019] Figure 5 For the three-dimensional putter Figure 1 .

[0020] Figure 6 For the three-dimensional putter Figure 2 .

[0021] Figure 7It is a three-dimensional diagram of the third cylinder, the push rod and the insert.

[0022] Figure 8 It is a three-dimensional diagram of the push rod, the winding needle fixing head and the winding needle assembly.

[0023] Figure 9 for Figure 8 A local magnified view of the middle S region. DETAILED DESCRIPTION

[0024] The present invention provides a winding needle mechanism for a battery cell winding machine. To make the purpose, technical solution, and effects of the present invention clearer and more explicit, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention.

[0025] See also Figures 1 to 7 The present invention provides a winding needle mechanism for a battery cell winding machine. The accompanying drawings are only used to explain the structural principles and are not proportional to the actual product. The accompanying drawings only depict structures related to the invention of this application, and some conventional structures are not specifically depicted. The terms "first" and "second" described herein are merely different names for similar structures for the purpose of explanation, and are not intended to limit this application. The "front end" and "rear end" of a certain structure described herein are a set of relative concepts. Figure 1 The "front end" of each component in the perspective is on the right and the "back end" is on the left.

[0026] In order to observe the internal structure, Figure 2 and Figure 3 The upper part of the shell of the winding needle fixing head is not drawn. Figure 3 The first cylinder and other structures are not shown. Figure 8 and Figure 9 The entire housing of the winding needle fixing head is not shown.

[0027] A winding needle mechanism for a battery cell winding machine includes a winding needle assembly 1, an insert 2, and a winding needle fixing head 3, wherein the rear ends of the winding needle assembly and the insert are respectively inserted into the winding needle fixing head. The winding needle mechanism of the battery cell winding machine also includes a first cylinder 41, a second cylinder 42, a third cylinder 43, and a push rod 44, which are arranged in sequence from the outside to the inside. The first cylinder, the second cylinder, the third cylinder, and the push rod do not rotate relative to each other; the front end of the second cylinder is inserted into the winding needle fixing head; the winding needle assembly includes two main winding needles 11, each of which is connected to a slider 31, each slider is provided with an elastic element 32, and the third cylinder 43 is connected to the insert 2. The insert and the main winding needle are arranged in parallel, and the first cylinder, the second cylinder, the third cylinder, and the push rod are arranged coaxially.

[0028] Furthermore, each main winding needle 11 is detachably connected to a winding needle piece 12. This arrangement enables the winding needle assembly to be suitable for winding battery cells of different sizes, thereby increasing the scope of application.

[0029] See also Figure 2 and Figure 3 Furthermore, the second cylinder has a first guide groove 501 along its length, and a first guide block 511 is provided on the first cylinder, one end of which is inserted into the first guide groove. This arrangement provides axial guidance and circumferential limiting for the second cylinder during its extension and retraction, preventing the second cylinder from rotating during the extension and retraction process.

[0030] like Figure 4 As shown, the third cylinder 43 further defines a second guide groove 502 along its length, and the second cylinder 42 is provided with a second guide block 512, one end of which is inserted into the second guide groove. This arrangement provides axial guidance and circumferential limiting for the third cylinder during its extension and retraction, preventing the third cylinder from rotating during the extension and retraction process. Figure 4 The second guide block is actually connected to the second cylinder. In order to facilitate the observation of the second guide groove, Figure 4 The second cylinder is not shown.

[0031] Furthermore, the second guide groove 502 is a through groove, and the push rod is provided with a third guide groove 503 along its length, and one end of the second guide block 512 is inserted into the third guide groove. This arrangement guides the push rod during its extension and retraction, so that the push rod does not rotate during its extension and retraction.

[0032] See also Figure 2 and Figure 3 Furthermore, a blade guide block 20 is provided in the winding needle fixing head 3, and the blade 2 passes through the blade guide block 20. By providing the blade guide block, the blade can be guided for extension and retraction, ensuring the parallelism of the blade and the main winding needle.

[0033] See also Figure 8 and Figure 9 Furthermore, each slider is provided with a roller 33. When the push rod extends forward, its front end passes between the two rollers, overcoming the elastic force of the elastic element, thereby separating the two sliders 31 and the main winding needle 11, achieving the "needle opening" action. When the push rod retracts, the slider 31 returns to its original position under the elastic force of the elastic element 32, achieving the "needle closing" action.

[0034] like Figure 9 As shown, further, the front end 441 of the push rod (i.e., the end corresponding to the roller) is tapered. Preferably, the front end 441 of the push rod is V-shaped. This configuration ensures that the push rod can smoothly pass through the two rollers and push the two rollers and the two sliders to the sides.

[0035] Preferably, the elastic element 32 is a spring; each slider is provided with a spring hole ( Figure 9 The winding needle fixing head is provided with a spring baffle 34, one end of the spring is inserted into the corresponding spring hole, and the other end is against the corresponding spring baffle. In order to facilitate the observation of the internal structure, Figure 8 and Figure 9 The housing of the winding needle fixing head is not shown. The spring baffle is installed in the winding needle fixing head. There is no relative movement between the spring baffle and the winding needle fixing head, thereby ensuring that the spring 32 can be supported.

[0036] See also Figure 1 and Figure 2 In actual use, a gear 91 is provided on the outside of the first cylinder to drive the first cylinder to rotate via gear transmission. A bearing 92 and a bearing seat (not shown) are provided on the outside of the first cylinder, and a bearing 93 and a bearing seat (not shown) are provided on the outside of the second cylinder. This arrangement enables the first, second, and third cylinders, the push rod, the winding needle fixing head, and the winding needle assembly to rotate together via gear transmission.

[0037] There are many ways to realize the linear reciprocating motion of the second cylinder, the third cylinder and the push rod. Here is one solution (but not limited to it): since the second cylinder is provided with a bearing and a bearing seat, the bearing seat of the second cylinder can be pushed by a cylinder or the like to realize the linear reciprocating motion of the second cylinder; the rear end of the third cylinder is provided with a first connecting block 81, which can be pushed by a cylinder or the like to realize the linear reciprocating motion of the third cylinder; the push rod is connected to the cylinder by a pin 83 (such as Figure 6 As shown) is connected to the second connecting block 82, and the second connecting block can be pushed by a cylinder or the like to realize linear reciprocating movement of the push rod (because the pin also passes through the second guide groove, the pin can move linearly and reciprocatingly normally without interfering with the third cylinder).

[0038] Since driving a structure to move linearly back and forth belongs to the existing technology in the mechanical field and is not within the scope of protection of this application, it will not be specifically explained or limited herein.

[0039] During operation, the push rod 44 moves forward, and the front end of the push rod 441 passes between the two rollers 33, separating the two sliders 31 from the main winding needle 11. Once one end of the cell diaphragm (not shown) passes between the two main winding needles, the push rod moves backward, and the slider 31 resets under the action of the elastic element 32, simultaneously driving the two main winding needles 11 to close, thereby clamping the diaphragm. The first cylinder 41 rotates, driving the winding needle assembly and other components such as the insert, allowing the diaphragm to be wound around the winding needle assembly. Depending on the actual situation, after a certain number of windings, the third cylinder 43 can move forward, driving the insert 2 forward, and the diaphragm will continue to be wound around the insert and the main winding needle. Once the cell winding, cutting, and gluing processes are completed, the third cylinder 43 moves backward, driving the insert from the cell; the second cylinder 43 moves backward, driving the winding needle assembly from the cell.

[0040] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the present invention.

Claims

1. A winding needle mechanism for a battery cell winding machine, comprising a winding needle assembly, an insert, and a winding needle fixing head, wherein the rear ends of the winding needle assembly and the insert are respectively inserted into the winding needle fixing head, characterized in that: It also includes a first cylinder, a second cylinder, a third cylinder and a push rod arranged in sequence from the outside to the inside, and the first cylinder, the second cylinder, the third cylinder and the push rod do not rotate relative to each other; the front end of the second cylinder is inserted into the winding needle fixing head; the winding needle assembly includes two main winding needles, each main winding needle is connected to a slider, and each slider is provided with an elastic element; the third cylinder is connected to the insert.

2. The winding needle mechanism of the battery cell winding machine according to claim 1, characterized in that: The outer side of each main winding needle is detachably connected with a needle winding piece.

3. The winding needle mechanism of the battery core winding machine according to claim 1 or 2, characterized in that: The second cylinder is provided with a first guide groove along its length direction, and the first cylinder is provided with a first guide block, one end of which is inserted into the first guide groove.

4. The winding needle mechanism of the battery cell winding machine according to claim 3, characterized in that: The third cylinder is provided with a second guide groove along its length direction, and the second cylinder is provided with a second guide block, one end of which is inserted into the second guide groove.

5. The winding needle mechanism of the battery cell winding machine according to claim 4, characterized in that: The second guide groove is a through groove, and the push rod is provided with a third guide groove along its length direction, and one end of the second guide block is inserted into the third guide groove.

6. The winding needle mechanism of the battery core winding machine according to claim 1 or 2, characterized in that: An insert guide block is provided in the winding needle fixing head, and the insert passes through the insert guide block.

7. The winding needle mechanism of the battery cell winding machine according to claim 1 or 2, characterized in that: Each slider is respectively provided with a roller.

8. The winding needle mechanism of the battery cell winding machine according to claim 7, characterized in that: The front end of the push rod is tapered.

9. The winding needle mechanism of the battery cell winding machine according to claim 7, characterized in that: The elastic element is a spring; each slider is provided with a spring hole, the winding needle fixing head is provided with a spring baffle, one end of the spring is inserted into the corresponding spring hole, and the other end is against the corresponding spring baffle.

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