Welding dust removal device

Abstract

The utility model discloses a dust removal device for welding. The dust removal device comprises a dust collection cavity, a dust removal pipe communicated with the dust collection cavity, and a semi-surrounding structure covering a dust collection opening of the dust collection cavity, the semi-surrounding structure and the dust collection cavity are horizontally and slidably connected. The enclosure of a semi-enclosed structure is designed on the dust suction port, the distance between the enclosure and a welding head can be adjusted, and the safety problems such as short circuit caused by dust splashing into a battery cell are avoided.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production, and in particular to a welding dust removal device. Background Technology

[0002] In the production of lithium batteries, the welding process of the cell tabs plays an indispensable and crucial role. During the welding process between the welding head and the metal tabs, welding slag and metal dust such as copper and aluminum are typically generated. If this dust remains inside the cell, it may trigger lithium crystallization during battery charging and discharging; if the dust penetrates the separator, it may also cause a short circuit and increase the battery's self-discharge rate. Therefore, a dust removal device is required during welding.

[0003] To ensure the quality of battery cell production, the design and development of a highly efficient and safe dust removal device for removing welding slag, dust, and other impurities generated during the welding process is crucial. Existing dust removal devices mainly consist of an air inlet, a suction system, a filter, and an exhaust system, all bolted to a bracket. However, because the suction inlet of existing devices is relatively far from the dust generation point, dust easily accumulates near the welding joint, significantly reducing the dust removal efficiency. Therefore, this invention aims to provide a highly efficient, simple, and easy-to-install dust removal device to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a welding dust removal device, which features a semi-enclosed structure on the dust suction port. The distance between the enclosed structure and the welding head can be adjusted to prevent dust from splashing into the battery cell and causing safety issues such as short circuits.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a welding dust removal device, including a dust suction chamber, a dust removal pipe connected to the dust suction chamber, and a semi-enclosed structure covering the dust suction port of the dust suction chamber; the semi-enclosed structure is horizontally slidably connected to the dust suction chamber.

[0007] A further embodiment: The semi-enclosed structure includes a top plate and side plates connected to both ends of the top plate; the bottom end of the side plate is provided with a guide rail in the same direction as the direction of the welding medium spraying, and the sides of the dust suction port are provided with slides for accommodating the guide rail, and the guide rail moves back and forth in the slides in a restricted manner.

[0008] A further embodiment: The side plate includes a first plate and a second plate that is slidably connected to the first plate.

[0009] A further solution: the dust suction port and the welding head are detachably connected.

[0010] A further embodiment: the welding head end has a stepped structure, and the dust suction port has an inner wall profile that matches the stepped structure.

[0011] A further option: The stepped structure is two in number, symmetrically arranged at both ends of the welding head.

[0012] A further solution: There are two dust removal pipes, which are symmetrically connected to both sides of the dust suction chamber.

[0013] A further solution: The welding head has a dust suction channel that communicates with the dust suction port.

[0014] A further solution: the extension end of the dust removal pipe is bent upwards.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes an adjustable semi-enclosed structure design to bring the suction port closer to the dust generation point, maximizing the absorption of freely scattered metal dust and effectively solving the dust accumulation problem, thereby significantly improving dust removal efficiency. A welding head connects the welding head to the suction chamber, and combined with an optimized suction port structure, this increases the tightness of the connection between the welding head and the suction port, reducing the possibility of welding slag and dust escaping from the welding area. This further reduces dust accumulation in the welding area, preventing dust from splashing into the battery cell and greatly reducing the risk of internal short circuits caused by dust residue. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 for Figure 1 Exploded structure diagram;

[0019] In the diagram: 1-Dust suction chamber, 11-Dust suction port, 2-Dust removal pipe, 3-Semi-enclosed structure, 31-Top plate, 32-Side plate, 321-First plate, 322-Second plate, 323-Guide rail, 4-Welding head connection handle, 5-Welding head, 51-Step structure. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. 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.

[0022] Please see Figure 1-2 In this embodiment, a welding dust removal device includes a dust collection chamber 1, a dust removal pipe 2 connected to the dust collection chamber 1, and a semi-enclosed structure 3 covering the dust collection port 11 of the dust collection chamber 1. The welding head 5 is connected to the dust collection port 11. The semi-enclosed structure 3 is used to block the welding slag that splashes during the welding process, preventing the welding slag from remaining inside the battery cell and greatly reducing the risk of internal short circuits caused by welding slag residue. The semi-enclosed structure 3 is horizontally slidably connected to the dust collection chamber 1, and the relative position of the semi-enclosed structure 3 and the welding point can be slidably adjusted to absorb the freely scattered welding slag to the maximum extent and solve the problem of welding slag accumulation.

[0023] Furthermore, the semi-enclosed structure 3 includes a top plate 31 and side plates 32 connected to both ends of the top plate 31; the top plate 31 and the side plates 32 form a U-shaped plate that covers the welding point. The bottom end of the side plate 32 is provided with a guide rail 323 in the same direction as the welding head 3, and the dust suction port 11 has slides on both sides to accommodate the guide rail 323. The guide rail 323 moves back and forth in a restricted manner in the slides, so as to adjust the distance between the semi-enclosed structure 3 and the welding point.

[0024] Furthermore, the side plate 32 includes a first plate 321 and a second plate 322 that is slidably connected to the first plate 321. The first plate 321 slides relative to the second plate 322 to change the longitudinal length of the side plate 32, which facilitates the placement of the welding head 5.

[0025] Furthermore, the welding head 5 has a stepped structure 51 at its end, and the dust suction port 11 has an inner wall profile that matches the stepped structure 51. The tight connection between the welding head 5 and the dust suction port 11 forms a relatively effective sealed area, reducing the possibility of welding slag dust escaping from the welding area and further reducing dust accumulation in the welding area. Considering the dust suction path, a dust suction channel that communicates with the dust suction port 11 is opened on the welding head 5. This dust suction channel can be an annular structure or a porous structure. Dust generated during the welding process enters the dust suction chamber 1 through this dust suction channel and the dust suction port 11 using negative pressure technology.

[0026] Furthermore, the welding head 5 and the welding head connecting handle 4 are detachably connected. This symmetrical design allows for quick disassembly when the welding head needs to be replaced or maintained, reducing downtime.

[0027] Furthermore, there are two stepped structures 51, which are symmetrically arranged at both ends of the welding head 5, making installation and disassembly more convenient.

[0028] Furthermore, there are two dust collection pipes 2, symmetrically connected to both sides of the suction chamber. The dust collection pipes 2 are connected to a negative pressure device. The symmetrical distribution of the two dust collection pipes 2 creates a more balanced airflow field, forming a more comprehensive suction area, and enabling more effective dust capture.

[0029] Furthermore, the upward bending of the extension end of the dust removal pipe 2 can significantly optimize the airflow path, reduce dust accumulation, and prevent dust blockage inside the dust removal pipe 2.

[0030] Before welding begins, the first plate 321 is pulled upwards to mount the welding head 5 onto the dust extraction port 11, and then the first plate 321 is pressed downwards. The distance between the semi-enclosed structure 3 and the welding head 5 is adjusted according to their position, and then secured with bolts. Welding is initiated, and simultaneously, the negative pressure equipment is activated for dust extraction. Splashing dust is blocked by the semi-enclosed structure 3, preventing it from entering the battery cell. Dust accumulated at the end of the welding head 5 is drawn into the dust extraction port 11 through its internal dust removal channel, enters the dust extraction chamber 1, and is finally discharged from the dust extraction pipe 2. When the welding head needs to be replaced or maintained, the equipment is stopped first. Then, the welding head 5 is removed from the dust extraction port 11, and the welding head 5 is separated from the welding head connection handle 4. A new welding head can then be installed.

[0031] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0032] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A welding fume extraction device characterized by, Including dust absorption cavity (1), dust removal pipe (2) communicated with the dust absorption cavity (1), cover in the dust absorption cavity (1) dust absorption mouth (11) on the semi-enclosed structure (3);The semi-enclosed structure (3) and the dust absorption cavity (1) horizontal sliding connection setting.

2. The welding fume extraction device of claim 1, wherein The semi-enclosed structure (3) includes a top plate (31), a side plate (32) connected to both ends of the top plate (31), the bottom end of the side plate (32) is provided with a guide rail (323) in the same direction as the welding medium injection direction, both sides of the dust suction port (11) are provided with a slide for accommodating the guide rail (323), and the guide rail (323) moves back and forth in the slide.

3. The welding fume extraction device of claim 2, wherein, The side plate (32) includes a first plate (321), a second plate (322) slidably connected to the first plate (321) up and down.

4. The welding fume extraction device of claim 1, wherein The dust suction port (11) and the welding head (5) are detachably connected.

5. The welding fume extraction device of claim 4, wherein, The welding head (5) has a stepped structure (51) at the end, and the dust suction port (11) has an inner wall contour matching the stepped structure (51).

6. The welding fume extraction device of claim 5, wherein, The number of stepped structures (51) is two, which are symmetrically arranged at both ends of the welding head (5).

7. The welding fume extraction device of claim 1, wherein The number of dust removal pipes (2) is two, which are symmetrically connected to both sides of the dust absorption cavity (1).

8. The welding fume extraction device of claim 4, wherein, The welding head (5) is provided with a dust suction channel communicated with the dust suction port (11).

9. The welding fume extraction device of claim 1, wherein, The extension end of the dust removal pipe (2) is bent upward.

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