Laser welding shielding gas device

Abstract

This utility model relates to a laser welding shielding gas device, belonging to the field of welding technology. It includes a gas holder, with a mounting base constructed at the apex of the inner wall of the gas holder. Each mounting base has a symmetrically arranged first step and a symmetrically arranged second step. A porous ceramic plate is matched to each pair of adjacent first steps along the length direction and adjacent first steps along the width direction of the gas holder. Ventilation holes are evenly distributed on the porous ceramic plate. Each porous ceramic plate forms a gas cavity between itself and the corresponding inner wall of the gas holder. The gas holder is provided with gas pipe interfaces connecting to the respective gas cavities. This utility model can effectively improve the coverage and protection of the welding area by the shielding gas, prevent oxidation during welding, and improve the welding quality of ultra-thin metal plates.

Description

Technical Field

[0001] This utility model relates to a protective gas device for laser welding, belonging to the field of welding technology. Background Technology

[0002] With the increasing application of ultra-thin metal sheets, their structures are becoming more complex, and the welding requirements are constantly improving. Currently, when laser welding ultra-thin metal sheets, the shielding gas is typically injected unidirectionally and coaxially through the laser welding head nozzle, which is insufficient to cover complex weld contours, leading to lateral oxidation and spatter adhesion. Designing a dedicated welding shielding gas chamber would be prohibitively expensive. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a laser welding protective gas device that can effectively improve the coverage and protection of the welding area by the protective gas, avoid oxidation during welding, and improve the welding quality of ultra-thin metal plates.

[0004] According to the technical solution provided by this utility model, a laser welding protective gas device includes a gas seat, and a mounting seat is respectively constructed at the top corner of the inner wall of the gas seat. Each mounting seat is constructed with a first step and a second step arranged symmetrically.

[0005] A porous ceramic plate is matched and matched for two adjacent first steps along the length direction of the gas seat and two adjacent first steps along the width direction of the gas seat, and the porous ceramic plate is evenly provided with air vents.

[0006] Each of the porous ceramic plates forms an air cavity between itself and the inner wall of the corresponding gas seat, and the gas seat is provided with an air pipe interface that connects to the corresponding air cavity.

[0007] As a further improvement of this utility model, three air pipe interfaces are evenly distributed along the long side of the gas seat, and two air pipe interfaces are evenly distributed along the short side of the gas seat.

[0008] As a further improvement of this utility model, the outer surface of the gas seat is provided with an integrally connected and outwardly extended connecting part, a magnet is installed in the groove of the connecting part, and a connecting bolt is provided in the bolt hole of the connecting part.

[0009] As a further improvement of this utility model, the porous ceramic plate is pressed by a pressure plate provided on the second step, and the pressure plate is fixedly connected to the gas seat by fixing bolts.

[0010] Compared with existing technologies, this utility model has the following advantages: The structure is simple, compact, and reasonable; using porous ceramics as the gas distribution layer decomposes the protective gas into micro-flows, forming a laminar flow barrier, effectively covering the welding path area with the protective gas; the annular arrangement of the porous ceramics effectively covers the entire area of ​​the ultra-thin metal plate; using magnets or bolts for assembly with existing welding fixtures allows it to be compatible with most existing ultra-thin metal plate welding fixtures; multiple gas pipe interfaces are arranged around the device, effectively improving the uniformity of protective gas distribution within the device; this annular protective gas device is simple, reliable, low-cost, and easy to maintain. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 yes Figure 1 A sectional view along the AA direction;

[0013] Figure 3 yes Figure 1 BB direction sectional view.

[0014] Explanation of reference numerals in the attached diagram: 1. Fixed pressure plate; 2. Gas seat; 2-1. Mounting seat; 2-2. First step; 2-3. Second step; 3. Perforated ceramic plate; 4. Gas pipe interface; 5. Fixing bolt; 6. Magnet; 7. Connecting bolt. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] This utility model discloses a laser welding protective gas device, including a gas seat 2. The top corner of the inner wall of the gas seat 2 is respectively constructed with a mounting seat 2-1. Each mounting seat 2-1 is constructed with a first step 2-2 and a second step 2-3 symmetrically arranged.

[0018] A porous ceramic plate 3 is matched and installed on each of the two adjacent first steps along the length direction of the gas seat 2 and the two adjacent first steps along the width direction of the gas seat 2. The porous ceramic plate 3 is provided with air vents evenly distributed on the porous ceramic plate 3.

[0019] Each of the porous ceramic plates 3 forms an air cavity between itself and the inner wall of the corresponding gas seat 2, and the gas seat 2 is provided with an air pipe interface 4 that connects to the corresponding air cavity.

[0020] Three air tube ports are evenly distributed along the long side of the gas holder 2, and two air tube ports are evenly distributed along the short side of the gas holder 2.

[0021] The outer surface of the gas holder 2 has an integrally connected and outwardly extending connecting part. A magnet 6 is installed in the groove of the connecting part, and a connecting bolt 7 is installed in the bolt hole of the connecting part. The main function of the magnet 6 is to facilitate the installation of the annular protective gas device onto existing welding fixtures that can be attracted by magnets. The main function of the connecting bolt 7 is to allow the annular protective gas device to be installed onto existing welding fixtures via bolts.

[0022] The porous ceramic plate 3 is pressed by the pressure plate 1 set on the second step 2-3, and the pressure plate 1 is fixedly connected to the gas seat 2 by the fixing bolts 5.

[0023] The working principle of this invention is as follows: This is an annular protective gas device that blows protective gas onto the welding area of ​​an ultra-thin metal plate. During operation, the protective gas enters the gas seat 2 through the gas pipe interface 4, filling the gas chamber with protective gas. The protective gas then covers the welding area of ​​the part through the porous ceramic plate 3. The main function of the protective gas device is to ensure that the protective gas is evenly distributed over the welding area.

[0024] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A laser welding shielding gas device, characterized by: The gas seat (2) includes a gas seat (2), and a mounting seat (2-1) is constructed at the top corner of the inner wall of the gas seat (2). Each mounting seat (2-1) is constructed with a first step (2-2) and a second step (2-3) arranged symmetrically. Two adjacent first steps along the length direction of the gas seat (2) and two adjacent first steps along the width direction of the gas seat (2) are respectively matched with a porous ceramic plate (3), and the porous ceramic plate (3) is evenly provided with air vents; Each of the porous ceramic plates (3) forms an air cavity between the inner wall of the corresponding gas seat (2), and the gas seat (2) is provided with an air pipe interface (4) that connects to the corresponding air cavity.

2. The laser welding shielding gas device as described in claim 1, characterized in that: The gas seat (2) has three air pipe ports evenly distributed along its long side and two air pipe ports evenly distributed along its short side.

3. The laser welding shielding gas device of claim 1, wherein: The outer surface of the gas seat (2) is provided with an integrally connected and outwardly extended connecting part, a magnet (6) is installed in the groove of the connecting part, and a connecting bolt (7) is provided in the bolt hole of the connecting part.

4. The laser welding shielding gas device of claim 1, wherein: The porous ceramic plate (3) is pressed by the pressure plate (1) set on the second step (2-3), and the pressure plate (1) is fixedly connected to the gas seat (2) by the fixing bolt (5).

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