Auxiliary limiting device for welding tab material strip

Abstract

The utility model relates to the field of tab production, in particular to an auxiliary limiting device for tab material strip welding. Comprising a workbench, a first sliding rail is horizontally arranged on the workbench, limiting tables are symmetrically and slidably connected to the first sliding rail, one side of each limiting table is fixedly connected with a first air cylinder for driving the limiting table to move along the first sliding rail, a detachable limiting mold and a welding platform are arranged on the limiting tables, and limiting grooves are evenly formed in the limiting mold at intervals; the welding platform is arranged on the side, close to the adjacent limiting table, of the limiting table, a laser welding device is fixedly arranged on the workbench, mounting holes are formed in the two sides of the limiting mold and the two sides of the welding platform correspondingly, matching holes are formed in the limiting tables correspondingly, and the limiting tables are detachably connected with the limiting mold and the welding platform in the mode that bolts penetrate through the mounting holes and the matching holes correspondingly. The welding device is simple in structural design, the limiting die and the welding platform can be rapidly replaced, the production cost is saved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrode production, specifically to an auxiliary limiting device for welding electrode strips. Background Technology

[0002] In the manufacturing process of lithium battery tabs, welding nickel after cutting the tab strip is a key process step. The main purpose is to solve the material compatibility, improve conductivity, and ensure battery safety. The negative electrode of lithium battery tabs usually uses copper as the base material. In the existing technology, the limiting mold and the welding platform are integrally formed structures. However, in the actual welding process, the welding platform is heated for a long time, which will cause thermal fatigue of the material, resulting in local softening or oxidation. Once the welding platform is replaced, the limiting mold must also be replaced, which increases the production cost. In addition, in order to ensure welding quality, both the limiting mold and the welding platform are made of copper, which is expensive. Moreover, the tab strip is very thin, and the inner wall of the limiting groove will be scratched by friction with the tab strip for a long time, affecting the limiting effect. Therefore, an auxiliary limiting device for welding tab strips is proposed, which can flexibly replace the limiting mold or the welding platform, effectively saving costs. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary limiting device for welding electrode strips, so as to solve the problems mentioned in the background art.

[0004] An auxiliary limiting device for welding tab strips is characterized by comprising a worktable, on which a first slide rail is horizontally arranged, and limiting platforms are symmetrically slidably connected on the first slide rail. Each limiting platform is fixedly connected to one side with a first cylinder that drives it to move along the first slide rail. Each limiting platform is provided with a detachable limiting mold and a welding platform. The limiting mold is provided with limiting grooves at even intervals. The welding platform is located on the side of the limiting platform near the adjacent limiting platform. A laser welder is fixedly arranged on the worktable. Mounting holes are provided on both sides of the limiting mold and the welding platform. The limiting platforms are correspondingly provided with mating holes. The limiting platforms are detachably connected to the limiting mold and the welding platform by bolts passing through the mounting holes and mating holes.

[0005] Preferably, two clamping slide rails are vertically and symmetrically arranged on the limiting platform, and a clamping block is slidably connected between the two clamping slide rails. The limiting mold is provided with a welding clamping platform that matches the contour of the clamping block, and the clamping block is located directly above the welding clamping platform.

[0006] Preferably, the limiting mold is made of stainless steel and the welding platform is made of copper.

[0007] Preferably, the lower end of the limiting platform is provided with an installation block, and the limiting platform is provided with an installation groove that matches the installation block, and the installation block is engaged in the installation groove.

[0008] Beneficial effects

[0009] (1) In this utility model, the limiting mold or welding platform can be replaced individually, which saves production costs.

[0010] (2) The limiting mold in this utility model is made of stainless steel. Stainless steel has a higher hardness than copper, which can improve the service life of the limiting mold and save production costs.

[0011] In this invention, the clamping block can work with the welding clamping platform to clamp the tab strip during the welding process, maintaining the stability of the tab strip during welding and ensuring the welding quality. Attached Figure Description

[0012] Figure 1 This is a top view of the structure of this utility model;

[0013] Figure 2 This is a side view of the structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the limiting mold and welding platform in this utility model;

[0015] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0016] In the diagram: 1. Workbench, 2. First slide rail, 3. Mounting hole, 4. Limiting platform, 401. Pressing slide rail, 402. Pressing block, 403. First cylinder, 5. Limiting mold, 501. Limiting groove, 502. Welding pressing platform, 503. Mounting block, 6. Welding platform, 7. Feeding device, 701. Feeding slide rail, 702. Feeding platform, 703. Clamping block, 8. Cutting device, 801. Cutting slide rail, 802. Lifting platform, 803. Cutting table, 804. Cutting blade, 9. Laser welder. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] like Figure 1-4 As shown, an auxiliary limiting device for welding tab strips includes a worktable 1, a first slide rail 2 horizontally arranged on the worktable, and limiting platforms 4 symmetrically slidably connected on the first slide rail. Each limiting platform is fixedly connected to one side with a first cylinder 403 that drives it to move along the first slide rail. The two first cylinders are activated simultaneously to push the two limiting platforms to move towards or away from each other along the first slide rail. The limiting platforms are provided with detachable limiting molds 5 and welding platforms 6. The limiting molds are provided with limiting grooves 501 evenly spaced. When the production line is in operation, the tab strips are placed in the respective limiting grooves. The welding platform is located on the side of the limiting platform close to the adjacent limiting platform. A laser welder 9 is fixedly arranged on the worktable and is located directly above the worktable.

[0020] The limiting mold and welding platform are each provided with mounting holes 3 on both sides. The limiting platform is provided with corresponding mating holes. The limiting platform is detachably connected to the limiting mold and welding platform by bolts passing through the mounting holes and mating holes. Each mating hole is provided with internal threads. Two clamping slide rails 401 are vertically and symmetrically arranged on the limiting platform. A clamping block 402 is slidably connected between the two clamping slide rails. The two ends of the clamping block are slidably connected to the two clamping slide rails. A cylinder is connected to one side of the clamping block to drive the clamping block to slide within the clamping slide rail. The limiting mold is provided with a welding clamping platform 502 that matches the contour of the clamping block. The clamping block is located directly above the welding clamping platform. The clamping block moves down to fit against the welding clamping platform, thereby fixing the electrode strip on the limiting mold and preventing the electrode strip from shifting during the welding process. The limiting mold is made of stainless steel, while the tab strip is made of copper. Stainless steel is harder than copper, which prevents the inner wall of the limiting groove from being scratched due to long-term friction, thus affecting the limiting effect on the tab strip. The welding platform is made of copper, which can achieve efficient heat dissipation and ensure welding quality. Stainless steel has much poorer thermal conductivity, resulting in poor quality tabs welded using a stainless steel welding platform.

[0021] The lower end of the limiting stage is provided with an installation block 503, and the limiting stage is provided with an installation groove that matches the installation block. The installation block is locked in the installation groove. The installation groove can realize the quick positioning of the limiting mold. At the same time, the installation groove can prevent the limiting mold from shifting when installing the limiting mold, thus improving the installation efficiency.

[0022] A feeding device is provided on one side of the workbench, and a cutting device is provided on the other side. The cutting device includes a cutting slide rail 801 horizontally set on the workbench. A lifting platform 802 is slidably connected to the cutting slide rail. A cylinder is connected to one side of the lifting platform to push it to slide on the cutting slide rail. A cutting table 803 is fixedly connected to one side of the lifting platform. A moving slide rail is vertically set on one side of the lifting platform. A cutting blade 804 is slidably connected to the moving slide rail. A cylinder is connected to the cutting blade to push it to move on the moving slide rail to cut the tab material strip. This is an existing mature technology and will not be described in detail here.

[0023] The feeding device includes a feeding slide rail 701 horizontally mounted on the worktable, a feeding platform 702 slidably connected to the feeding slide rail, a clamping slide rail vertically mounted on one side of the feeding platform, and two clamping blocks 703 slidably connected to the clamping slide rail. Each clamping block is connected to a cylinder for driving it to move on the clamping slide rail. The nickel sheet is placed between the two clamping blocks, which fix the nickel sheet in place. The feeding platform is connected to a cylinder that drives it to move on the feeding slide rail. The movement of the feeding platform causes the nickel sheet to move, so that the nickel sheet is between two limiting platforms to facilitate welding of both ends of the nickel sheet. This is an existing mature technology and will not be described in detail here.

[0024] Working principle

[0025] The device is equipped with moving rollers on both sides of the worktable to drive the material strips. Multiple electrode strips move in corresponding limiting grooves 501. After moving to the position to be welded, nickel sheets matching the number of electrode strips are placed between two clamping blocks 703. The cutting device 8 is activated, and the lifting platform 802 moves to the electrode strip, positioning it between the cutting blade 804 and the cutting table 803. The cutting blade cuts the strip. After cutting, the lifting platform returns to its original position, and the moving roller on the right side of the device drives the strips to move a specified distance, creating space between the strips for welding nickel sheets. The cylinder 403 is activated, causing the two limiting platforms 4 to move towards each other. The limiting mold 5 on the limiting platform limits the strip, and the clamping block 402 clamps the strip to ensure that it does not deviate. Then, the clamping block 703 moves the nickel sheet between the two strips. At this time, the contact points between the nickel sheet and the strip are located on the welding platform 6. The laser welder 9 is activated to weld the two ends of the nickel sheet, so that the nickel sheet is welded to the tab strip. After the welding is completed, the feeding device returns to its original position, the two limiting platforms return to their original position, and the moving roller on the production line continues to move the tab strip, and then continues to weld the next position of the strip to be welded.

[0026] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An auxiliary limiting device for tab stock belt welding, characterized in that: The utility model provides a laser welding device, including workbench, first slide rail is horizontally equipped on the workbench, a plurality of limit tables are symmetrically connected on the first slide rail, each limit table one side is fixedly connected with first air cylinder that drives it moves along the first slide rail, detachable limit mould and welding platform are equipped on the limit table, limit groove is uniformly spaced and is equipped on the limit mould, welding platform is equipped on the limit table and is close to the side of adjacent limit table, laser welding device is fixedly equipped on the workbench, both sides of limit mould and welding platform are equipped with mounting hole, and limit table is correspondingly provided with cooperation hole, and limit table respectively and limit mould, welding platform realize detachable connection through bolt through mounting hole and cooperation hole.

2. The auxiliary limiting device for tab belt welding according to claim 1, characterized in that: Two vertical symmetrical compression slide rails are arranged on the limit table, a compression block is slidably connected between the two compression slide rails, and a welding compression platform matching the profile of the compression block is arranged on the limit mould.

3. The auxiliary limiting device for tab belt welding according to claim 1, characterized in that: The limit mould is made of stainless steel, and the welding platform is made of copper.

4. The auxiliary limiting device for tab belt welding according to claim 1, characterized in that: The lower end of the limit table is provided with a mounting block, and the limit table is provided with a mounting groove matching the mounting block, and the mounting block is clamped in the mounting groove.

Images