Winding needle mechanism

Abstract

The utility model provides a winding needle mechanism which comprises a main body comprising a first fixing part and a second fixing part which are oppositely arranged; the winding drum assembly comprises a first winding drum and a second winding drum, the first winding drum is arranged on the first fixing part, and the second winding drum is arranged on the second fixing part; the clamping assembly is arranged between the first fixing part and the second fixing part; the first transmission assembly is in transmission connection with the first winding drum and / or the second winding drum; the second transmission assembly is in transmission connection with the clamping assembly, so that the clamping assembly can be opened or closed; the first transmission assembly is used for being in transmission connection with a first driving assembly, and the second transmission assembly is used for being in transmission connection with a second driving assembly. It can be seen that the winding needle mechanism is simpler in structure and easier to machine and assemble.

Description

Technical Field

[0001] The present application belongs to the technical field of battery production, and more specifically, to a needle winding mechanism. Background Art

[0002] At present, the clamping assembly and the winding drum assembly in the winding needle mechanism are both realized by a transmission assembly to achieve the simultaneous action of the clamping assembly and the winding drum assembly. Since the action directions of the clamping assembly and the winding needle assembly are exactly opposite, the structure of the transmission assembly that transmits the clamping assembly and the winding drum assembly respectively is relatively complex, and the processing and assembly are difficult. Utility Model Content

[0003] The present application aims to provide a needle winding mechanism to solve at least one technical problem mentioned in the above background technology.

[0004] The technical solution adopted in this application is a needle winding mechanism, comprising:

[0005] The main body comprises a first fixing portion and a second fixing portion, wherein the first fixing portion and the second fixing portion are arranged opposite to each other;

[0006] A reel assembly, comprising a first reel and a second reel, wherein the first reel is disposed on the first fixing portion, and the second reel is disposed on the second fixing portion;

[0007] A clamping assembly, disposed between the first fixing portion and the second fixing portion;

[0008] a first transmission assembly, drivingly connected to the first reel and / or the second reel, so that the first reel and the second reel can move closer to or farther from each other; and

[0009] A second transmission assembly is transmission-connected to the clamping assembly so as to enable the clamping assembly to be opened or closed;

[0010] The first transmission assembly is used for transmission connection with the first drive assembly, and the second transmission assembly is used for transmission connection with the second drive assembly.

[0011] It can be seen that the first reel and / or the second reel of the needle winding mechanism in the present application are connected via the first transmission assembly, the clamping assembly is connected via the second transmission assembly, and the first transmission assembly is connected to the first drive assembly, and the second transmission assembly is connected to the second drive assembly. This allows the first transmission assembly and the second transmission assembly to work independently of each other, without the need for linkage with each other, thereby making the structure of the first transmission assembly and the second transmission assembly simpler, and easier to process and assemble. In other words, the structure of the needle winding mechanism is simpler, and easier to process and assemble.

[0012] In addition, since the reel assembly and the clamping assembly are controlled independently, the reel assembly and the clamping assembly can work independently, and the opening distances of the reel assembly and the clamping assembly can be controlled separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 One of the structural schematic diagrams of a needle winding mechanism provided in an embodiment of the present application;

[0015] Figure 2 The second structural schematic diagram of a needle winding mechanism provided in an embodiment of the present application;

[0016] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0017] Figure 4 A partial exploded schematic diagram of a needle winding mechanism provided in an embodiment of the present application;

[0018] Figure 5 A partial exploded schematic diagram of a needle winding mechanism provided in an embodiment of the present application, behind which a winding drum assembly is hidden;

[0019] Figure 6 A schematic diagram of the main body of a needle winding mechanism provided in an embodiment of the present application.

[0020] Reference numerals:

[0021] 100, main body; 110, first fixing portion; 120, second fixing portion; 130, limiting portion; 131, first limiting groove; 132, second limiting groove; 140, base;

[0022] 200, reel assembly; 210, first reel; 220, second reel;

[0023] 300, clamping assembly; 310, first clamping member; 320, second clamping member;

[0024] 400, first transmission assembly; 410, first transmission end; 420, first transmission member; 421, first stop block; 430, first reversing structure; 431, first reversing member; 432, first sliding portion; 433, first reversing slot; 434, third stop slot; 440, first elastic member; 450, second transmission member; 460, second reversing structure; 461, second reversing member; 462, second sliding portion; 463, second reversing slot; 470, second elastic member;

[0025] 500, second transmission assembly; 510, second transmission end; 520, third transmission member; 530, third reversing structure; 531, third sliding portion; 532, third reversing slot; 533, fourth sliding portion; 534, fourth reversing slot; 540, guide member; 550, first mounting seat; 560, second mounting seat. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] It should be noted that when a metastructure is referred to as being "fixed to" or "set on" another metastructure, it can be directly on the other metastructure or indirectly on the other metastructure. When a metastructure is referred to as being "connected to" another metastructure, it can be directly connected to the other metastructure or indirectly connected to the other metastructure.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of some applications, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the production process of lithium batteries, the winding core is formed by winding the separator and the positive and negative electrode sheets through the winding needle mechanism of the winding machine. The winding needle mechanism needs to clamp the separator through the clamping assembly, and the cathode and anode sheets need to be wound through the reel assembly outside the clamping assembly. The clamping assembly needs to be opened and closed to clamp and release the separator, and the reel assembly needs to be reduced in diameter to facilitate the removal of the wound cell from the reel assembly.

[0031] Combination Figure 1 , Figure 3 and Figure 4 As shown, the present application provides a needle winding mechanism, including a main body 100 , a winding drum assembly 200 , a clamping assembly 300 , a first transmission assembly 400 and a second transmission assembly 500 .

[0032] The main body 100 includes a first fixing portion 110 and a second fixing portion 120 , and the first fixing portion 110 and the second fixing portion 120 are disposed opposite to each other.

[0033] The reel assembly 200 includes a first reel 210 and a second reel 220 . The first reel 210 is disposed on the first fixing portion 110 , and the second reel 220 is disposed on the second fixing portion 120 .

[0034] The clamping assembly 300 is disposed between the first fixing portion 110 and the second fixing portion 120 .

[0035] The first transmission assembly 400 is in transmission connection with the first reel 210 and / or the second reel 220 so that the first reel 210 and the second reel 220 can approach or move away from each other.

[0036] For example, in some embodiments, the first transmission assembly 400 may be in transmission connection with the first reel 210 , so that the first reel 210 may be close to or away from the second reel 220 .

[0037] In some embodiments, the first transmission assembly 400 may be in transmission connection with the second reel 220 , so that the second reel 220 may be moved closer to or farther away from the first reel 210 .

[0038] In some embodiments, the first transmission assembly 400 may be partially connected to the first reel 210 and the second reel 220 for transmission, so that the first reel 210 and the second reel 220 move synchronously toward or away from each other.

[0039] The second transmission assembly 500 is in transmission connection with the clamping assembly 300 so that the clamping assembly 300 can be opened or closed.

[0040] During actual use, when a lithium battery winding battery is prepared by the winding needle mechanism of the present application, the clamping assembly 300 can be first opened by the second transmission assembly 500, and the isolation film can be placed in the clamping assembly 300. Then, the second transmission assembly 500 can be used to clamp the isolation film, for example, one end of the isolation film. At the same time, the first transmission assembly 400 can be used to make the first reel 210 and the second reel 220 be in a state of being away from each other, and the cathode sheet, the anode sheet, and the isolation film can be wound in a specific layer sequence on the periphery formed by the first reel 210 and the second reel 220 to form a battery cell.

[0041] When the battery cell is wound, the winding needle mechanism is unlocked to release the battery cell for removal. Specifically, the first transmission assembly 400 can be used to bring the first reel 210 and the second reel 220 closer to each other, and the second transmission assembly 500 can be used to open the clamping assembly 300 to loosen the isolation film, so that the clamped isolation film can be easily removed; at the same time, after the first reel 210 and the second reel 220 are closer to each other, the outer circumference formed between the first reel 210 and the second reel 220 becomes smaller, so the battery cell wound in a specific layer sequence on the outer circumference can also be easily removed. From then on, the winding preparation of the battery cell and the core removal operation after preparation are completed.

[0042] Furthermore, the first transmission assembly 400 is used for transmission connection with the first driving assembly, that is, the first driving assembly can drive the first transmission assembly 400 to make the first reel 210 and the second reel 220 approach or move away from each other.

[0043] The second transmission assembly 500 is used for transmission connection with the second drive assembly, that is, the second drive assembly can drive the second transmission assembly 500 to open or close the clamping assembly 300.

[0044] It can be seen that the first reel 210 and the second reel 220 of the needle winding mechanism in the present application are connected by the first transmission assembly 400, the clamping assembly 300 is connected by the second transmission assembly 500, the first transmission assembly 400 is connected to the first drive assembly, and the second transmission assembly 500 is connected to the second drive assembly. In this way, the first transmission assembly 400 and the second transmission assembly 500 can work independently without the need for linkage with each other, thereby making the structure of the first transmission assembly 400 and the second transmission assembly 500 simpler, and easier to process and assemble. In other words, the structure of the needle winding mechanism is simpler, and easier to process and assemble.

[0045] See also Figure 1The reel assembly 200 in the winding needle mechanism provided in one embodiment of the present application can be divided into a first reel 210 and a second reel 220 along the circumferential direction, that is, the outer circumferential surfaces of the first reel 210 and the second reel 220 can have an arc surface, and the arc surface part is used for winding the cathode sheet, the anode sheet, and the isolation film.

[0046] The first reel 210 and the second reel 220 can be symmetrically arranged. For example, the first reel 210 and the second reel 220 can form a cylindrical shape or can roughly form a cylindrical shape when they are close to each other. This is conducive to the winding of the cathode sheet, the anode sheet, and the isolation membrane, and will not cause damage to the cathode sheet, the anode sheet, and the isolation membrane.

[0047] See also Figure 1 and Figure 3 In the needle winding mechanism provided in one embodiment of the present application, one end of the first transmission assembly 400 is the first transmission end 410, one end of the second transmission assembly 500 is the second transmission end 510, and the second transmission end 510 on the second transmission assembly 500 is the end of the second transmission assembly 500 away from the first transmission end 410.

[0048] In this way, the first drive assembly for transmitting the first transmission assembly 400 and the second drive assembly for transmitting the second transmission assembly 500 do not need to be arranged at the same end, or the first drive assembly and the second drive assembly are located at the same end but staggered with each other. In this way, on the one hand, interference between the first drive assembly and the second drive assembly is avoided, and on the other hand, the arrangement of the first transmission assembly 400 and the second transmission assembly 500 can be facilitated.

[0049] For example, in some embodiments, the first transmission end 410 of the first transmission component 400 can be disposed at one end of the main body 100, i.e., one end where the first fixed portion 110 and the second fixed portion 120 are the same, and the second transmission end 510 of the second transmission component 500 can be disposed at the other end of the main body 100, i.e., the other end where the first fixed portion 110 and the second fixed portion 120 are the same.

[0050] In other embodiments, the first transmission end 410 and the second transmission end 510 may be located at the same end of the first fixing portion 110 and / or the second fixing portion 120 , but the first transmission end 410 and the second transmission end 510 are staggered from each other at the same end.

[0051] It should also be noted that, in some embodiments, the first drive assembly (not shown) and the second drive assembly (not shown) may be external drive assemblies, for example, the first drive assembly and the second drive assembly may be provided on a winding machine.

[0052] Combination Figure 3 , Figure 4 and Figure 5In the needle winding mechanism provided in one embodiment of the present application, the first transmission assembly 400 may include a first transmission member 420 and a first reversing structure 430. One end of the first transmission member 420 is a first transmission end 410. The first transmission member 420 is disposed on the first fixed portion 110, and the first transmission member 420 can move along the length direction of the first fixed portion 110 on the first fixed portion 110. The first reel 210 is movably connected to the first transmission member 420 through the first reversing structure 430. When the first transmission member 420 moves, the first reversing structure 430 enables the first reel 210 to move toward or away from the second reel 220.

[0053] Specifically, when the first drive assembly causes the first transmission member 420 to move along the length direction of the first fixed portion 110 on the first fixed portion 110 through the first transmission end 410, the first transmission member 420 causes the first reversing structure 430 to operate, and the first reversing structure 430 can convert the movement of the first transmission member 420 along the length direction of the first fixed portion 110 into movement of the first reel 210 toward or away from the second reel 220.

[0054] For example, when the length direction of the first fixing portion 110 is horizontal, the first reversing structure 430 can convert the horizontal movement of the first transmission member 420 into the vertical movement of the first reel 210. Alternatively, when the length direction of the first fixing portion 110 is the axial direction of the first reel, the first reversing structure 430 can convert the axial movement of the first transmission member 420 into the radial movement of the first reel 210.

[0055] Furthermore, combined with Figure 4 , Figure 5 and Figure 6 In some embodiments, a limiting portion 130 may be further provided on the first fixing portion 110, and the first transmission member 420 is movably provided on the first fixing portion 110 through the limiting portion 130. The limiting portion 130 can enable the first transmission member 420 to move along the length direction of the first fixing portion 110, and can prevent the first transmission member 420 from being separated from the first fixing portion 110 in the width direction and the height direction of the first fixing portion 110.

[0056] For example, see Figure 6 The limiting portion 130 may include a first limiting groove 131 and a second limiting groove 132 arranged on the first fixing portion 110, the second limiting groove 132 is located on one side or both sides of the first limiting groove 131 and is connected to the first limiting groove 131, and a first limiting block 421 is also arranged on the first transmission member 420, the first transmission member 420 is arranged in the first limiting groove 131, and the first limiting block 421 is located in the second limiting groove 132.

[0057] It can be understood that the first transmission member 420 can move in the first limiting groove 131 and the second limiting groove 132 along the length direction of the first fixing portion 110. The first limiting groove 131 can prevent the first transmission member 420 from being separated from the first fixing portion 110 in the width direction of the first fixing portion 110, and the second limiting groove 132 can prevent the first transmission member 420 from being separated from the first fixing portion 110 in the height direction of the second fixing portion 120.

[0058] Combination Figure 4 and Figure 5 In the needle winding mechanism provided in one embodiment of the present application, the first reversing structure 430 may include a first reversing member 431 and a first sliding portion 432, the first reel 210 is arranged on the first reversing member 431, and a first reversing groove 433 may be arranged on the first reversing member 431, the first sliding portion 432 is connected to the first transmission member 420, and the first sliding portion 432 can be slidably arranged in the first reversing groove 433.

[0059] Specifically, the first transmission member 420 can drive the first sliding part 432 to move along the length direction of the first fixed part 110. During the movement of the first sliding part 432, the first reversing member 431 moves in a direction perpendicular to the moving direction of the first transmission member 420 under the action of the first reversing groove 433 and the first sliding part 432, that is, the first reversing member 431 can drive the first reel 210 to move toward or away from the second reel 220.

[0060] The first sliding portion 432 may be a camshaft.

[0061] The first reversing groove 433 may be an inclined groove. For example, the inclination direction of the first reversing groove 433 may be that one end of the first reversing groove 433 gradually inclines downward toward the other end or gradually inclines upward.

[0062] Furthermore, a third limiting groove 434 may be provided on the first switching member 431 . The third limiting groove 434 extends along the length direction of the first transmission member 420 . One end of the first transmission member 420 away from the first fixing portion 110 is located in the third limiting groove 434 .

[0063] It can be understood that, since the end of the first transmission member 420 away from the first fixing portion 110 is located in the third limiting groove 434, on the one hand, the first transmission member 420 and the first switching member 431 can move relative to each other in the length direction of the first transmission member 420, and on the other hand, the third limiting groove 434 can prevent the first switching member 431 from being disengaged in the width direction of the first transmission member 420. In addition, since the first sliding portion 432 is located in the first switching groove 433, the first switching groove 433 can prevent the first switching member 431 from being disengaged in the height direction of the first transmission member 420.

[0064] See also Figure 3 In the needle winding mechanism provided in one embodiment of the present application, one end of the first transmission member 420 is the first transmission end 410, and the first transmission end 410 is used to abut and connect with the first driving component, and a first elastic member 440 is arranged between the other end of the first transmission member 420 and the first fixed part 110.

[0065] For example, the driving end of the first driving component can be abutted against the first driving end 410 of the first transmission member 420 to drive the first transmission member 420 to move. When the first driving component drives the first transmission member 420 to move, the first elastic member 440 is compressed. When the first driving component withdraws the force on the first transmission member 420, the first elastic member 440 can make the first transmission member 420 move in the opposite direction to the initial position.

[0066] Specifically, in some embodiments, a first elastic member 440 may be disposed between the first transmission member 420 and an end wall of the first limiting groove 131 away from the first transmission end 410. The first elastic member 440 may be a spring.

[0067] In some embodiments, the end of the first reversing groove 433 close to the first transmission end 410 gradually slopes downward toward the end away from the first transmission end 410. In this way, when the first driving assembly drives the first transmission member 420 to move, the first reversing member 431 can drive the first reel 210 to move in a direction away from the first fixing portion 110, that is, the first reel 210 is away from the second reel 220; when the first elastic member 440 moves the first transmission member 420, the first reversing member 431 can drive the first reel 210 to move in a direction close to the first fixing portion 110, that is, the first reel 210 is close to the second reel 220.

[0068] Combination Figure 4 and Figure 5 In the needle winding mechanism provided in one embodiment of the present application, the second reel 220 can move on the second fixing portion 120 toward or away from the first reel 210 .

[0069] The first transmission assembly 400 may include a second transmission member 450 and a second reversing structure 460. One end of the second transmission member 450 is the first transmission end 410. The second transmission member 450 may be movably disposed on the second fixing portion 120 along the length direction of the second fixing portion 120. The second reel 220 is movably connected to the second transmission member 450 via the second reversing structure 460. The second reversing structure 460 enables the second reel 220 to move toward or away from the first reel 210.

[0070] Specifically, when the first drive assembly causes the second transmission member 450 to move along the length direction of the second fixed portion 120 on the second fixed portion 120 through the first transmission end 410, the second transmission member 450 causes the second reversing structure 460 to operate, and the second reversing structure 460 can convert the movement of the second transmission member 450 along the length direction of the second fixed portion 120 into movement of the second reel 220 toward or away from the first reel 210.

[0071] It should be noted that, in some embodiments, when one end of the first transmission member 420 is also the first transmission end 410, that is, when the first transmission member 420 and the second transmission member 450 are both provided with the first transmission end 410, the first drive assembly can be connected through transmission with the first transmission end 410 on the first transmission member 420 and the second transmission member 450.

[0072] Further, the second reversing structure 460 may include a second reversing member 461 and a second sliding portion 462. The second reversing member 461 is provided with a second reversing groove 463. The second sliding portion 462 is connected to the second transmission member 450 and the second sliding portion 462 is slidably disposed in the second reversing groove 463. The second reel 220 is disposed on the second reversing member 461.

[0073] Furthermore, the second reversing groove 463 and the first reversing groove 433 are symmetrical along the axis direction between the first reel 210 and the second reel 220 .

[0074] It can be understood that when the first reversing groove 433 and the second reversing groove 463 are symmetrical along the axis direction between the first reel 210 and the second reel 220, the moving directions of the first reel 210 and the second reel 220 are just opposite, that is, the first reel 210 and the second reel 220 can move in a direction away from each other at the same time, or move in a direction close to each other at the same time. This method is more conducive to winding the battery cell.

[0075] Furthermore, the first transmission end 410 of the second transmission member 450 is used for abutting connection with the first driving assembly, and a second elastic member 470 is disposed between the other end of the second transmission member 450 and the second fixing portion 120 .

[0076] For example, the driving end of the first driving component can be abutted against the first driving end 410 of the second transmission member 450 to drive the second transmission member 450 to move. When the first driving component drives the second transmission member 450 to move, the second elastic member 470 is compressed. When the first driving component withdraws the force on the second transmission member 450, the second elastic member 470 can make the second transmission member 450 move in the opposite direction to the initial position.

[0077] In addition, it should be noted that the connection method between the second transmission member 450 and the second fixed part 120 can be the same as the connection direction between the first transmission member 420 and the first fixed part 110, the connection direction between the second reversing member 461 and the second transmission member 450 can be the same as the connection direction between the first reversing member 431 and the first transmission member 420, and the installation method of the second elastic member 470 can also be the same as the installation method of the first elastic member 440, which will not be repeated here.

[0078] Combination Figure 1 , Figure 3 and Figure 4 In the needle winding mechanism provided in one embodiment of the present application, the main body 100 may further include a base 140, and the first fixing portion 110 and the second fixing portion 120 may be disposed on the base 140. The base 140 may enable the first fixing portion 110, the second fixing portion 120, and the components disposed on the first fixing portion 110 and the second fixing portion 120 to form a whole, which is beneficial for assembling the needle winding mechanism on the winding machine.

[0079] Furthermore, the second transmission assembly 500 may include a third transmission member 520 and a third reversing structure 530, one end of the third transmission member 520 is the second transmission end 510, the third transmission member 520 may be movably disposed on the base 140, and the third transmission member 520 is transmission-connected to the clamping assembly 300 via the third reversing structure 530.

[0080] For example, the third transmission member 520 can move on the base 140 along the axial direction between the first reel 210 and the second reel 220. The third reversing structure 530 can enable the clamping assembly 300 to open or close under the movement of the third transmission member 520. For example, the clamping assembly 300 can open or close in a direction perpendicular to the axial direction between the first reel 210 and the second reel 220.

[0081] Furthermore, the second transmission end 510 is fixedly connected to the driving end of the second driving assembly, that is, the second driving assembly can drive the third transmission member 520 to move back and forth in the axial direction between the first reel 210 and the second reel 220 through the second transmission end 510, that is, to realize the opening or closing movement of the clamping assembly 300.

[0082] Combination Figure 1 and Figure 3 In the needle winding mechanism provided in one embodiment of the present application, the clamping jaw assembly may include a first clamping member 310 and a second clamping member 320, and the first clamping member 310 and the second clamping member 320 are relatively arranged between the first fixing portion 110 and the second fixing portion 120, and the first clamping member 310 and the second clamping member 320 can be close to or away from each other.

[0083] For example, the first clamping member 310 and the second clamping member 320 can move closer to or farther from each other in a direction perpendicular to the axial direction between the first reel 210 and the second reel 220 , thereby achieving opening or closing between the first clamping member 310 and the second clamping member 320 .

[0084] Further, in some embodiments, the third reversing structure 530 may include a third sliding portion 531 and a third reversing groove 532 disposed on the third transmission member 520 , the third sliding portion 531 is connected to the first clamping member 310 , and the third sliding portion 531 may be slidably disposed in the third reversing groove 532 .

[0085] Specifically, when the third transmission member 520 moves, the first clamping member 310 moves toward or away from the second clamping member 320 under the cooperation of the third sliding portion 531 and the third reversing groove 532, so that the first clamping member 310 and the second clamping member 320 can be opened or closed. The third sliding portion 531 can be a camshaft, and the third reversing groove 532 can be an inclined groove.

[0086] In some embodiments, the third reversing structure 530 may include a fourth sliding portion 533 and a fourth reversing groove 534 disposed on the third transmission member 520 , the fourth sliding portion 533 is connected to the first clamping member 310 , and the fourth sliding portion 533 is slidably disposed in the fourth reversing groove 534 .

[0087] Specifically, when the third transmission member 520 moves, the second clamping member 320 moves toward or away from the first clamping member 310 under the cooperation of the fourth sliding portion 533 and the fourth reversing groove 534, so that the first clamping member 310 and the second clamping member 320 can be opened or closed. The fourth sliding portion 533 can be a camshaft, and the fourth reversing groove 534 can be an oblique groove.

[0088] Furthermore, in some embodiments, the third reversing structure 530 may include a third sliding portion 531 and a third reversing groove 532 disposed on the third transmission member 520. At the same time, the third reversing structure 530 also includes a fourth sliding portion 533 and a fourth reversing groove 534 disposed on the fourth transmission member. At this time, the fourth reversing groove 534 and the third reversing groove 532 may be symmetrical along the axial direction between the first clamping member 310 and the second clamping member 320.

[0089] It can be understood that when the fourth reversing groove 534 is symmetrical to the third reversing groove 532, during the movement of the third transmission member 520, the first clamping member 310 and the second clamping member 320 can move synchronously in opposite directions, that is, the first clamping member 310 and the second clamping member 320 can move synchronously in the direction of moving away from or approaching each other. This method can reduce the stroke of the single movement of the first clamping member 310 and the second clamping member 320, and is more convenient for the structural design of the needle winding mechanism.

[0090] See also Figure 3 In order to improve the stability of the movement of the first clamping member 310, a guide member 540 may be further provided on the base 140, and the first clamping member 310 is slidably provided on the guide member 540 through the first mounting seat 550, and the first mounting seat 550 is connected to the third sliding portion 531.

[0091] In order to improve the stability of the movement of the second clamping member 320 , the second clamping member 320 is slidably disposed on the guide member 540 via the second mounting seat 560 , and the second mounting seat 560 is connected to the fourth sliding portion 533 .

[0092] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of some applications should be included in the protection scope of some applications.

Claims

1. A needle winding mechanism, characterized in that: include: The main body comprises a first fixing portion and a second fixing portion, wherein the first fixing portion and the second fixing portion are arranged opposite to each other; A reel assembly, comprising a first reel and a second reel, wherein the first reel is disposed on the first fixing portion, and the second reel is disposed on the second fixing portion; A clamping assembly, disposed between the first fixing portion and the second fixing portion; a first transmission assembly, drivingly connected to the first reel and / or the second reel, so that the first reel and the second reel can move closer to or farther from each other; and A second transmission assembly is transmission-connected to the clamping assembly so as to enable the clamping assembly to be opened or closed; The first transmission assembly is used for transmission connection with the first drive assembly, and the second transmission assembly is used for transmission connection with the second drive assembly.

2. The needle winding mechanism according to claim 1, characterized in that: One end of the first transmission assembly is a first transmission end, and one end of the second transmission assembly is a second transmission end, the first transmission end is used for transmission connection with the first drive assembly, and the second transmission end is used for transmission connection with the second drive assembly; and The second transmission end is an end of the second transmission component away from the first transmission end.

3. The needle winding mechanism according to claim 2, characterized in that: The first transmission assembly includes a first transmission member and a first reversing structure, one end of the first transmission member is the first transmission end, the first transmission member is disposed on the first fixing portion, and can move along the length direction of the first fixing portion; and The first reel is movably connected to the first transmission member via the first reversing structure. When the first transmission member moves, the first reversing structure enables the first reel to move toward or away from the second reel.

4. The needle winding mechanism according to claim 3, characterized in that: The first fixing portion is provided with a limiting portion, and the first transmission member is movably disposed on the first fixing portion through the limiting portion.

5. The needle winding mechanism according to claim 4, characterized in that: The limiting portion includes a first limiting groove and a second limiting groove provided on the first fixing portion, wherein the second limiting groove is located on one side or both sides of the first limiting groove and is communicated with the first limiting groove; and A first limiting block is also provided on the first transmission member, the first transmission member is arranged in the first limiting groove, and the first limiting block is located in the second limiting groove.

6. The needle winding mechanism according to any one of claims 3 to 5, characterized in that: The first reversing structure includes a first reversing member and a first sliding portion, and the first reel is disposed on the first reversing member; The first reversing member is provided with a first reversing groove, the first sliding portion is connected to the first transmission member, and the first sliding portion is slidably disposed in the first reversing groove; or The first transmission member is provided with a first reversing groove, the first sliding portion is provided on the first reversing member, and the first sliding portion is slidably provided in the first reversing groove.

7. The needle winding mechanism according to claim 6, characterized in that: The first switching member is provided with a third limiting groove, the third limiting groove extends along the length direction of the first transmission member, and one end of the first transmission member away from the first fixing portion is located in the third limiting groove.

8. The needle winding mechanism according to any one of claims 3 to 5, characterized in that: The first transmission end of the first transmission member is used for abutting connection with the first drive assembly; and A first elastic member is disposed between the other end of the first transmission member and the first fixing portion.

9. The needle winding mechanism according to claim 6, characterized in that: The first transmission assembly further includes a second transmission member and a second reversing structure, one end of the second transmission member is a first transmission end, and the second transmission member can be movably disposed on the second fixing portion along the length direction of the second fixing portion; and The second reel is movably connected to the second transmission member via the second reversing structure, and the second reversing structure enables the second reel to move toward or away from the first reel.

10. The needle winding mechanism according to claim 9, characterized in that: The second reversing structure comprises a second reversing member and a second sliding portion, the second reversing member is provided with a second reversing groove, the second sliding portion is connected to the second transmission member, and the second sliding portion is slidably disposed in the second reversing groove; The second reel is disposed on the second reversing member; The second reversing groove is symmetrical to the first reversing groove along the axis between the first drum and the second drum; The first transmission end of the second transmission member is used for abutting connection with the first drive assembly; and A second elastic member is disposed between the other end of the second transmission member and the second fixing portion.

11. The needle winding mechanism according to claim 8, characterized in that: The main body further comprises a base, and the first fixing portion and the second fixing portion are arranged on the base; The second transmission assembly includes a third transmission member and a third reversing structure. One end of the third transmission member is the second transmission end. The third transmission member is movably disposed on the base. The third transmission member is transmission-connected to the clamping assembly via the third reversing structure.

12. The needle winding mechanism according to claim 11, characterized in that: The second transmission end is fixedly connected to the driving end of the second driving assembly; and The first transmission end is located at one end side that is the same as the first fixing portion and the second fixing portion, and the second transmission end is located at the other end side that is the same as the first fixing portion and the second fixing portion.

13. The needle winding mechanism according to claim 11, characterized in that: The clamping assembly comprises a first clamping member and a second clamping member, wherein the first clamping member and the second clamping member are relatively arranged between the first fixing portion and the second fixing portion, and the first clamping member and the second clamping member can be moved closer to or farther from each other; The third reversing structure includes a third sliding part and a third reversing groove arranged on the third transmission member, the third sliding part is connected to the first clamping member, and the third sliding part is slidably arranged in the third reversing groove; The third reversing structure further includes a fourth sliding portion and a fourth reversing groove provided on the third transmission member, the fourth sliding portion is connected to the second clamping member, and the fourth sliding portion is slidably provided in the fourth reversing groove, and the fourth reversing groove is symmetrical with the third reversing groove along the axis direction between the first clamping member and the second clamping member; A guide member is provided on the base, the first clamping member is slidably provided on the guide member via a first mounting seat, the second clamping member is slidably provided on the guide member via a second mounting seat, the first mounting seat is connected to the third sliding portion, and the second mounting seat is connected to the fourth sliding portion.

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