CN219130610U

CN219130610U - Semi-automatic tab bending mechanism

Info

Publication number: CN219130610U
Application number: CN202223325678.6U
Authority: CN
Inventors: 章荣忠; 陈志勇; 李钊波; 陈雷
Original assignee: Jiangxi Weidian New Energy Co Ltd
Current assignee: Jiangxi Weidian New Energy Co Ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-06-06
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to the technical field of lithium battery preparation, and discloses a semi-automatic tab bending mechanism, which comprises: the base assembly is used for placing the battery cell; the bending assembly comprises a bending block and a pressing block, the pressing block is elastically connected with the base assembly, the bending block is arranged on one surface of the pressing block, which is close to the base assembly, and the bending block is positioned above the electrode lug of the battery cell; the pressing assembly comprises a roller, a supporting piece and a handle driving piece, the supporting piece is arranged on the base assembly, the handle driving piece is arranged on the supporting piece, the roller is connected with the handle driving piece and is in rolling connection with the pressing block, the handle driving piece drives the roller to move downwards under the action of external force, the roller drives the bending block to bend the tab, and the bending mechanism has the characteristics of simple structure, simplicity and convenience in operation and labor saving and improves the bending efficiency of the tab.

Description

Semi-automatic tab bending mechanism

Technical Field

The utility model relates to the technical field of lithium battery preparation, in particular to a semi-automatic tab bending mechanism.

Background

In the preparation process of the lithium battery, the tab is required to be bent into a specific shape, then operations such as shell entering and welding are performed, the traditional tab bending operation adopts manual bending, and the mode has the defects of poor bending consistency and low efficiency, so that the tab is bent by adopting a bending device in the prior art, but the conventional bending device is complex in general structure and inconvenient to operate, or can be bent only once. Therefore, it is necessary for the developer in the art to provide a new tab bending mechanism.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a semi-automatic tab bending mechanism which has the characteristics of simple structure, simplicity and convenience in operation and labor saving, and the tab bending efficiency is improved.

The aim of the utility model is realized by the following technical scheme:

a semiautomatic tab bending mechanism, comprising:

the base assembly is used for placing the battery cell;

the bending assembly comprises a bending block and a pressing block, the pressing block is elastically connected with the base assembly, the bending block is arranged on one surface of the pressing block, which is close to the base assembly, and the bending block is positioned above the electrode lug of the battery cell;

the pressing assembly comprises a roller, a supporting piece and a handle driving piece, wherein the supporting piece is arranged on the base assembly, the handle driving piece is arranged on the supporting piece, the roller is rotationally connected with the handle driving piece and is in rolling connection with the pressing and holding block, the handle driving piece drives the roller to move downwards under the action of external force, and the roller drives the bending block to bend the tab.

In one embodiment, the base assembly comprises a base body and a battery cell positioning block, wherein the base body is provided with a containing groove, the battery cell positioning block is placed in the containing groove, and the battery cell positioning block is provided with a U-shaped limiting groove matched with the battery cell.

In one embodiment, the cell positioning block is detachably connected with the base body.

In one embodiment, two end corners at the bottom of the U-shaped limiting groove are respectively provided with an avoidance groove.

In one embodiment, the depth of the U-shaped limiting groove is smaller than the thickness of the battery cell body.

In one embodiment, the pressing block is connected with the base body through a plurality of elastic pieces, each elastic piece comprises a spring and a guide column, the guide column comprises a column body and a limiting part, one end of the column body is connected with the base body, the other end of the column body is connected with the limiting part, the spring is sleeved on the column body, the pressing block is in sliding connection with the column body, one end of the spring is connected with the base body, and the other end of the spring is connected with the pressing block.

In one embodiment, the cylinder employs a ball bushing guide assembly.

In one embodiment, the handle driving part comprises a handle, a rotating shaft and a connecting arm, wherein the rotating shaft penetrates through the supporting component and is rotationally connected with the supporting part, one end of the rotating shaft is connected with the handle, the other end of the rotating shaft is connected with one end of the connecting arm, and the other end of the connecting arm is rotationally connected with the idler wheel through a bearing pin.

In one embodiment, the bending block is provided with a first bending surface and a second bending surface, the first bending surface is connected with the second bending surface, when the bending block is pressed downwards, the first bending surface enables the tab to complete primary bending, and the second bending surface enables the tab to complete secondary bending.

In one embodiment, the first bending surface and the second bending surface have an included angle of 87-89 degrees.

Compared with the prior art, the utility model has at least the following advantages:

according to the semi-automatic tab bending mechanism, the base component, the bending component and the pressing component are arranged, the base component is used for placing the battery core, the bending component is used for realizing the bending operation of the battery core tab, and the pressing component can drive the bending component to move through the cooperation of the handle driving piece and the roller, so that the semi-automatic tab bending mechanism has the characteristics of simple structure, simplicity and convenience in operation and labor saving, can simultaneously complete primary bending and secondary bending, and improves tab bending efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a semiautomatic tab bending mechanism according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a semi-automatic tab bending mechanism shown in FIG. 1;

FIG. 3 is a schematic view of a semi-automatic tab bending mechanism shown in FIG. 1;

fig. 4 is a schematic diagram of a cell structure after bending.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 3, a semiautomatic tab bending mechanism 10 includes: the base assembly 100, the bending assembly 200 and the pressing assembly 300, wherein the base assembly 100 is used for placing a battery cell; the bending assembly 200 comprises a bending block 210 and a pressing block 220, the pressing block 220 is elastically connected with the base assembly 100, the bending block 210 is arranged on one surface of the pressing block 220, which is close to the base assembly 100, and the bending block 210 is positioned above the electrode lug 400 of the battery cell; the pressing assembly 300 comprises a roller 310, a support member 320 and a handle driving member 330, wherein the support member 320 is arranged on the base assembly 100, the handle driving member 330 is arranged on the support member 320, the roller 310 is rotationally connected with the handle driving member 330 and is in rolling connection with the pressing block 220, the handle driving member 330 drives the roller 310 to move downwards under the action of external force, and the roller 310 drives the bending block 210 to bend the tab 400.

It should be noted that, traditional manual bending operation size uniformity is poor, and current bending mechanism 10 general structure is complicated, or bending operation is more laborious, the semi-automatic tab 400 bending mechanism 10 that this application provided just can accomplish the tab 400 simultaneously and bend once and secondary through simple structural design, place the battery cell on base subassembly 100, tab 400 is placed and is being close to the one end of bending the subassembly, only need hold handle driver 330 downwards, handle driver 330 drives gyro wheel 310 and moves downwards, roll drive press-holding piece 220, drive at last and buckle piece 210 and buckle the operation to tab 400, whole operation flow is simple swift, and can make tab 400 buckle the size keep unanimous, tab 400 efficiency and quality of buckling have been improved.

Referring to fig. 1, further, the base assembly 100 includes a base body 110 and a battery cell positioning block 120, the base body 110 is provided with a receiving groove 111, the battery cell positioning block 120 is placed in the receiving groove 111, and the battery cell positioning block 120 is provided with a U-shaped limiting groove 121 matched with the battery cell.

It should be noted that, the U-shaped limiting groove 121 limits the battery core body 500, and the end of the battery core with the tab 400 is placed at the non-open end of the U-shaped limiting groove 121, meanwhile, the U-shaped limiting groove 121 is provided with the open end, so that the battery core is more convenient for operators to take and place, and the production efficiency is improved.

Further, the cell positioning block 120 is detachably connected with the base body 110, so that the cell positioning block 120 matched with the cell positioning block 120 can be replaced according to different types of cells, the application range of the bending mechanism 10 can be expanded, and the application efficiency of the bending mechanism 10 can be improved.

Referring to fig. 1, further, two bottom end corners of the U-shaped limiting groove 121 are provided with avoiding grooves 1211.

It should be noted that, when the battery cell is in a square structure, the avoiding groove 1211 is formed to further improve the picking and placing efficiency of the battery cell, so as to avoid the difficulty in picking and placing caused by the tight clamping between the battery cell and the end angle of the U-shaped limiting groove 121.

Referring to fig. 3, further, the depth of the U-shaped limiting groove 121 is smaller than the thickness of the cell body 500.

It should be noted that, after the battery cell is placed, the side of the battery cell body 500, where the tab 400 is disposed, is located at one end of the U-shaped limiting groove 121 near the bending block 210, and the tab 400 is located between the battery cell positioning block 120 and the bending block 210, when the bending block 210 is pressed downward, the bending block 210 and the side wall of the battery cell body 500 bend the tab 400 once, and the bending block 210 and the battery cell positioning block 120 bend the tab 400 twice, so that the primary bending and the secondary bending operations of the tab 400 are completed.

Referring to fig. 3 and 4, further, the bending block 210 has a first bending surface 211 and a second bending surface 212, the first bending surface 211 is connected with the second bending surface 212, when the bending block 210 is pressed downward, the first bending surface 211 makes the tab 400 complete a first bending, and the second bending surface 212 makes the tab 400 complete a second bending.

It should be noted that, when the bending block 210 moves towards the direction of the cell positioning block 120, the first bending surface 211 and the side wall of the cell body 500 first perform a first bending operation on the tab 400, the bending block 210 continues to move downwards, the first bending surface 211 is attached to the cell body 500, and the second bending surface 212 is attached to the cell positioning block 120, so that the tab 400 is subjected to a second bending operation.

Referring to fig. 3, further, the angle α between the first bending surface 211 and the second bending surface 212 is 87 ° to 89 °.

It should be noted that, because the metal bending has a rebound effect, when the tab 400 needs to be bent by 90 °, the included angle needs to be set to be smaller than 90 °, so that the rebound effect can be eliminated.

Referring to fig. 1 and 2, further, the pressing block 220 is connected to the base body 110 through a plurality of elastic members 230, each elastic member 230 includes a spring 231 and a guide post 232, the guide post 232 includes a post and a limiting portion, one end of the post is connected to the base body 110, the other end of the post is connected to the limiting portion, the spring 231 is sleeved on the post, the pressing block 220 is slidably connected to the post, one end of the spring 231 is connected to the base body 110, and the other end of the spring 231 is connected to the pressing block 220.

It should be noted that, under the driving of the pressing assembly 300, the pressing block 220 drives the bending block 210 to move downward along the guide post 232 to perform bending operation, after the bending operation is completed, the pressing block 220 resets under the action of the elastic force of the spring 231, so that the bending operation of the next cell can be performed rapidly, and meanwhile, the guide post 232 can enable the bending block 210 and the cell positioning block 120 to be aligned accurately, so that the uniformity of the bending angle and the size is improved.

Further, the guide post 232 employs a ball bushing guide assembly. It should be noted that, the ball bushing guiding assembly is a guiding mechanism commonly used in machinery and dies, and includes a guide sleeve, a guide post, a bushing, a ball, and other structures, and friction between the guide sleeve and the guide post during relative movement can be reduced through the bushing and the ball, so that abrasion between moving parts is reduced, and the guiding post 232 adopts the ball bushing guiding assembly, so that service life can be prolonged, up-and-down movement smoothness of the part bending assembly is improved, and therefore the bending mechanism 10 is more labor-saving, and production efficiency is improved.

Referring to fig. 1 and 2, in one embodiment, the handle driving member 330 includes a handle 331, a rotating shaft 332 and a connecting arm 333, the rotating shaft 332 penetrates through the supporting assembly and is rotatably connected with the supporting member 320, one end of the rotating shaft 332 is connected with the handle 331, the other end of the rotating shaft 332 is connected with one end of the connecting arm 333, and the other end of the connecting arm 333 is rotatably connected with the roller 310 through a bearing pin 3331.

It should be noted that, when the handle 331 is pressed downward by an external force, the handle 331 drives the connecting arm 333 to move downward through the rotating shaft 332, and meanwhile, the connecting arm 333 drives the roller 310 to move downward, so that the roller 310 drives the pressing block 220 to move, and the combination of the handle driving piece 330 and the roller 310 makes the operation of an operator more labor-saving, and improves the production efficiency.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. Semi-automatic utmost point ear mechanism of bending, its characterized in that includes:

the base assembly is used for placing the battery cell;

2. The semiautomatic tab bending mechanism of claim 1, wherein the base assembly comprises a base body and a cell positioning block, the base body is provided with a containing groove, the cell positioning block is placed in the containing groove, and the cell positioning block is provided with a U-shaped limiting groove matched with the cell.

3. The semiautomatic tab bending mechanism of claim 2, wherein the cell positioning block is detachably connected to the base body.

4. The semiautomatic tab bending mechanism according to claim 2, wherein two bottom corners of the U-shaped limiting groove are respectively provided with an avoiding groove.

5. The semiautomatic tab bending mechanism of claim 2, wherein the U-shaped limiting groove has a depth less than the thickness of the cell body.

6. The semiautomatic tab bending mechanism according to claim 2, wherein the pressing block is connected with the base body through a plurality of elastic members, each elastic member comprises a spring and a guide post, the guide post comprises a post body and a limiting portion, one end of the post body is connected with the base body, the other end of the post body is connected with the limiting portion, the spring is sleeved on the post body, the pressing block is slidably connected with the post body, one end of the spring is connected with the base body, and the other end of the spring is connected with the pressing block.

7. The semi-automatic tab bending mechanism of claim 6, wherein the post employs a ball bushing guide assembly.

8. The semiautomatic tab bending mechanism according to claim 1, wherein the handle driving member comprises a handle, a rotating shaft and a connecting arm, the rotating shaft penetrates through the supporting member and is rotatably connected with the supporting member, one end of the rotating shaft is connected with the handle, the other end of the rotating shaft is connected with one end of the connecting arm, and the other end of the connecting arm is rotatably connected with the roller through a bearing pin.

9. The semi-automatic tab bending mechanism of claim 1, wherein the bending block has a first bending surface and a second bending surface, the first bending surface is connected with the second bending surface, when the bending block is pressed downwards, the first bending surface makes the tab complete a primary bending, and the second bending surface makes the tab complete a secondary bending.

10. The semiautomatic tab bending mechanism of claim 9, wherein the first bending surface and the second bending surface have an angle of 87 ° to 89 °.