Welding head dust removal device

Abstract

The utility model discloses a dust removal device for a welding head. The dust removal device comprises a dust removal mechanism and a dust removal pipeline which are connected together, the dust removal mechanism comprises a flow guide cavity and a dust collection cavity, the flow guide cavity is communicated with the welding head, and the dust collection cavity is communicated with the dust removal pipeline; the flow guide cavity and the dust collection cavity are communicated through a multi-stage negative pressure opening formed in the dust flow direction. The multi-stage negative pressure openings are formed in the inner wall of the flow guide cavity, air suction coverage areas are increased in the horizontal direction and the depth direction, it is guaranteed that dust in the whole welding area can be effectively removed, and dust removal comprehensiveness and efficiency are improved.

Description

Technical Field

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

[0002] In the research and development and manufacturing of prismatic lithium batteries, the core is connected to the connecting piece via ultrasonic welding, and then the connecting piece is connected to the cover plate via laser welding. The process of laser welding the connecting piece to the cover plate is called cover plate welding. Laser welding generates welding slag and dust, posing a risk of puncturing the separator and insulating tape, causing internal short circuits in the lithium battery. This significantly impacts the battery's short circuit and self-discharge, and may even lead to thermal runaway risks such as fire and explosion, affecting the battery's safety and stability, and causing irreparable damage. Therefore, cover plate welding machines need to be equipped with dust removal devices to reduce the impact of welding slag and dust on the battery. Currently, traditional dust removal devices use a single-channel suction, leaving dead corners within the chamber, resulting in some dust not being effectively removed. Utility Model Content

[0003] The purpose of this utility model is to provide a welding head dust removal device. By arranging multiple negative pressure ports on the inner wall of the guide cavity, the suction coverage area is increased in both the horizontal and vertical directions, ensuring that dust in the entire welding area can be effectively removed, thereby improving the comprehensiveness and efficiency of dust removal.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model discloses a welding head dust removal device, including a dust removal mechanism and a dust removal pipe connected together; the dust removal mechanism includes a flow guiding cavity and a dust collection cavity, wherein the flow guiding cavity is connected to the welding head, and the dust collection cavity is connected to the dust removal pipe; the flow guiding cavity and the dust collection cavity are connected through a multi-stage negative pressure port arranged along the dust flow direction.

[0006] A further solution: The dust collection chamber has an opening along the side wall contour of the end connecting the guide chamber and the welding head, and the gap between the opening and the outer wall of the guide chamber forms an air outlet slit.

[0007] A further solution: the air outlet is a U-shaped air outlet.

[0008] A further solution: an air inlet is provided at the end of the flow guide cavity opposite to the welding head, and the air inlet is provided with a baffle for adjusting the size of the air inlet.

[0009] A further solution: One end of the stop block is provided with an oblong hole, and the stop block and the guide cavity are connected together by a fastener passing through the oblong hole.

[0010] A further solution: The multi-stage negative pressure outlet includes at least three parallel, vertically arranged, straight-line air outlets.

[0011] A further solution: the multi-stage negative pressure ports are symmetrically opened on the two opposite walls of the flow guiding cavity, and the straight air outlet is inclined towards the welding head.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention expands the suction coverage area by setting multi-stage negative pressure ports with a highly layered design on the side wall of the guide cavity, preventing dust from accumulating in the welding head or dust removal device chamber, ensuring that dust in the entire welding area can be effectively removed, and improving the comprehensiveness and efficiency of dust removal. The elongated design of the straight air outlet and the narrow air outlet increases wind speed and pressure, maximizing wind speed under the same air volume, thus saving energy and reducing costs.

[0014] A baffle is installed at the air inlet to adjust the opening of the air inlet. The air volume can be adjusted according to the welding conditions to avoid the problem of insufficient airflow. Attached Figure Description

[0015] Figure 1 This is the front view of the present utility model;

[0016] Figure 2 This is a bottom view of the present invention;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 This is a schematic diagram of the installation of this utility model;

[0019] In the diagram: 1-Dust removal mechanism, 11-Guiding cavity, 12-Dust collection cavity, 121-Opening, 2-Dust removal pipe, 3-Welding head, 4-Multi-stage negative pressure port, 41-Line-shaped air outlet, 5-Narrow air outlet, 6-Air inlet, 7-Block, 71-Oval hole, 8-Welding head support, 9-Cover plate. 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 1-4 In this embodiment, a welding head dust removal device includes a dust removal mechanism 1 and a dust removal pipe 2 connected together. The dust removal mechanism 1 includes a flow guiding chamber 11 and a dust collection chamber 12, wherein the flow guiding chamber 11 is connected to the welding head 3, and the dust collection chamber 12 is connected to the dust removal pipe 2. The flow guiding chamber 11 and the dust collection chamber 12 are connected by multi-stage negative pressure ports 4 arranged along the dust flow direction. The dust removal pipe 2 is connected to a negative pressure device, which causes the multi-stage negative pressure ports 4 to generate suction, drawing dust upward from the welding head 3 into the flow guiding chamber 11, and then through the multi-stage negative pressure ports 4 into the dust collection chamber 12, and finally into the dust removal pipe 2. The multi-layer design of the multi-stage negative pressure ports 4 can adsorb dust at different heights, avoiding dead corners, i.e., dust accumulation in the welding area or on the inner wall of the flow guiding chamber 11.

[0023] Furthermore, the dust collection chamber 12 has an opening 121 along the side wall contour of the end connecting the guide chamber 11 and the welding head 3. The gap between the opening 121 and the outer wall of the connecting end forms an air outlet 5. The air outlet 5 has a small cross-section, which increases the air velocity and avoids the problem of energy waste caused by requiring a larger air volume to achieve the same dust removal effect.

[0024] Furthermore, the air outlet 5 is a U-shaped air outlet.

[0025] Furthermore, an air inlet 6 is provided at the end of the guide cavity 11 opposite to the welding head 3, and the air inlet 6 is provided with a baffle 7 for adjusting the size of the air inlet. By adjusting the baffle 7, the opening of the air inlet 6 is controlled, thereby adjusting the air intake according to the actual welding conditions.

[0026] Furthermore, one end of the baffle 7 is provided with an oblong hole 71, and the baffle 7 and the guide cavity 11 are connected together by fasteners passing through the oblong hole 71. By adjusting the relative position of the fasteners in the oblong hole 71, the air intake volume can be adjusted to avoid the problem of uneven airflow.

[0027] Furthermore, the multi-stage negative pressure outlet 4 includes at least three parallel vertically arranged linear air vents 41. The elongated shape of these linear air vents 41 increases the airflow velocity and pressure, further enhancing the dust collection effect.

[0028] Furthermore, multi-stage negative pressure ports 4 are symmetrically opened on the two opposite walls of the flow guiding cavity 11, and the straight air outlet 41 is inclined towards the welding head 3. The inclined design optimizes the airflow direction, ensuring that the airflow is directly aimed at the welding area and improving the dust collection efficiency.

[0029] During installation, the outer wall of the dust collection chamber 12 is fixed above the welding head support 8 using locking plates. The lower part of the welding head support 8 is connected to the laser welding head 3 via locking plates. The flow guide chamber 11 is connected to the laser welding head 3, and the welding head 3 is placed on the connecting plate and cover plate 9. The position of the baffle 7 is pre-adjusted according to the actual welding conditions, and the appropriate air intake is adjusted. During operation, the extension end of the dust collection pipe 2 is connected to a negative pressure device, which generates negative pressure suction at the multi-stage negative pressure port 4 and the air outlet slit 5, drawing dust from the welding area upwards. Most of the dust enters the dust collection chamber 12 from the multi-stage negative pressure port 4, while a small portion of the dust enters the dust collection chamber 12 directly from the air outlet slit 5. The dust entering the dust collection chamber 12 is then drawn into the dust collection pipe 2.

[0030] 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.

[0031] 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 head dust removal device, characterized in that, It includes a dust removal mechanism (1) and a dust removal pipe (2) connected together; the dust removal mechanism (1) includes a flow guiding cavity (11) and a dust collection cavity (12), wherein the flow guiding cavity (11) is connected to the welding head (3) and the dust collection cavity (12) is connected to the dust removal pipe (2); the flow guiding cavity (11) and the dust collection cavity (12) are connected by a multi-stage negative pressure port (4) arranged along the dust flow direction.

2. The welding head dust removal device according to claim 1, characterized in that, The dust collection chamber (12) has an opening (121) along the side wall contour of the end connecting the flow guide chamber (11) and the welding head (3), and the gap between the opening (121) and the flow guide chamber (11) forms an air outlet slit (5).

3. The welding head dust removal device according to claim 2, characterized in that, The air outlet (5) is a U-shaped air outlet.

4. The welding head dust removal device according to claim 1, characterized in that, An air inlet (6) is provided at the end of the flow guide cavity (11) opposite to the welding head (3), and the air inlet (6) is provided with a baffle (7) for adjusting the size of the air inlet.

5. The welding head dust removal device according to claim 4, characterized in that, The stop block (7) has a waist-shaped hole (71) at one end, and the stop block (7) and the guide cavity (11) are connected together by a fastener that passes through the waist-shaped hole (71).

6. The welding head dust removal device according to claim 1, characterized in that, The multi-stage negative pressure port (4) includes at least three parallel vertical air vents (41).

7. The welding head dust removal device according to claim 6, characterized in that, The multi-stage negative pressure port (4) is symmetrically opened on the two opposite walls of the flow guide cavity (11), and the straight air outlet (41) is inclined towards the welding head (3).

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