Nut laser welding annular gas protection device

Abstract

The utility model relates to an annular gas protection device for nut laser welding. The annular gas protection device comprises a workbench, a positioning groove formed in the workbench, a positioning mechanism used for positioning a workpiece and a pressing mechanism used for pressing the workpiece. The pressing mechanism comprises a first pressing plate, a second pressing plate arranged below the first pressing plate and connected with the first pressing plate, a position adjusting assembly connected with the first pressing plate, a welding hole formed in the first pressing plate, an air inlet hole and an annular air outlet hole formed in the second pressing plate, and the air inlet hole communicates with the annular air outlet hole. The annular air outlet hole is formed in the outer side below the welding hole and is communicated with the welding hole; the positioning mechanism comprises a containing groove formed in the workbench, the workpiece is connected with the containing groove in a clamped mode, and the positioning groove is used for containing a nut. According to the welding device, accurate positioning of a workpiece and a nut can be rapidly achieved, so that the welding efficiency is improved, inert gas is conveyed to a welding part through the annular gas outlet holes, and then the welding quality is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of laser welding technology, in particular to a nut laser welding annular gas protection device. BACKGROUND

[0002] As an advanced fusion welding method, laser welding technology has been widely used in industrial manufacturing in recent years. By impacting the workpiece joint with a high-energy-density laser beam, efficient and precise welding results can be achieved. It plays an important role in the fields of automobile manufacturing, aerospace and electronic devices, not only improving production efficiency, but also significantly improving product performance and quality, becoming one of the indispensable key technologies in modern manufacturing.

[0003] In a specific application scenario, an installation hole is provided on a workpiece to be processed, and a nut needs to be welded to the workpiece by laser welding. When welding the nut to the workpiece, inert gas needs to be used for protection to prevent oxidation at the welding site. The existing inert gas supply channel has the problem of uneven gas supply, which affects the quality of laser welding. And before welding, the relative position of the nut and the workpiece needs to be adjusted, and the positioning process is relatively cumbersome, thus reducing the efficiency of laser welding. CONTENT OF THE INVENTION

[0004] In order to solve the above technical problems, the application provides a nut laser welding annular gas protection device.

[0005] The nut laser welding annular gas protection device provided by the application adopts the following technical scheme:

[0006] A nut laser welding annular gas protection device, comprising a workbench, a positioning groove provided on the workbench, a positioning mechanism for positioning a workpiece, and a pressing mechanism for pressing the workpiece; the pressing mechanism comprises a first pressing plate, a second pressing plate arranged below the first pressing plate and connected with the first pressing plate, a position adjusting assembly connected with the first pressing plate, a welding hole provided on the first pressing plate, an air inlet hole, and an annular air outlet hole provided on the second pressing plate, the air inlet hole and the annular air outlet hole are in communication, the annular air outlet hole is arranged below and outside the welding hole and is in communication with the welding hole; the positioning mechanism comprises a placing groove provided on the workbench, the workpiece is clamped with the placing groove, and the positioning groove is used for placing the nut.

[0007] By adopting the above technical solution, the positioning groove on the worktable can quickly place the nut, and the placement slot in the positioning mechanism engages with the workpiece, ensuring accurate positioning of the workpiece during the welding process, thereby improving welding efficiency. The first and second pressure plates in the clamping mechanism, in conjunction with the position adjustment component, can firmly clamp the workpiece, ensuring welding stability. The welding hole is used for laser welding operations, and the annular gas outlet is located below and on the outer side of the welding hole and communicates with it, enabling uniform delivery of inert gas to the welding area, effectively preventing oxidation during welding, and thus significantly improving welding quality.

[0008] Preferably, the first pressure plate has an air supply channel, which is used to connect the air inlet and the air outlet, and the air supply channel has a ring structure.

[0009] By adopting the above technical solution, the gas delivery channel is designed to connect the inlet and outlet ports, ensuring that the inert gas can be smoothly delivered to the welding area. The annular structure of the gas delivery channel further ensures the uniformity of gas delivery, thereby effectively improving the welding quality.

[0010] Preferably, the positioning mechanism further includes a positioning hole formed on the workpiece and a positioning post disposed on the worktable, wherein the positioning post engages with the positioning hole.

[0011] By adopting the above technical solution, the snap-fit ​​between the positioning hole and the positioning post can quickly achieve accurate positioning between the workpiece and the worktable, thereby simplifying the positioning operation before welding and improving the efficiency of laser welding.

[0012] Preferably, a guide block is provided at the end of the positioning post away from the worktable, and the diameter of the end of the guide block away from the positioning post is smaller than the diameter of the end of the guide block close to the positioning post.

[0013] By adopting the above technical solution, the guide block can guide the positioning pin and the positioning hole to quickly align, thereby reducing the adjustment time during the positioning process and improving the positioning efficiency of the workpiece and nut. The smaller diameter of the end of the guide block away from the positioning pin makes it easier for the positioning pin to be inserted into the positioning hole, further improving the convenience and accuracy of positioning.

[0014] Preferably, there are multiple positioning holes and multiple positioning posts.

[0015] By adopting the above technical solution, the arrangement of multiple positioning holes and multiple positioning pins can further improve the positioning accuracy between the workpiece and the worktable. Specifically, the cooperation of multiple positioning holes and positioning pins provides the workpiece with more positioning points during placement, thereby reducing the possibility of positional deviation and ensuring a more accurate relative position between the workpiece and the nut. This improvement effectively enhances the positioning reliability during the welding process, thereby improving the overall welding efficiency and quality.

[0016] Preferably, the position adjustment assembly includes a mounting bracket disposed on the worktable and a cylinder disposed on the mounting bracket, the cylinder being connected to the first pressure plate.

[0017] By adopting the above technical solution, the cylinder is connected to the first pressure plate, which can drive the first pressure plate to adjust its position, thereby achieving precise clamping and positioning of the workpiece and improving welding efficiency. Combined with the mounting bracket on the worktable, the stability and reliability of the position adjustment component are ensured, further optimizing the relative position adjustment process between the nut and the workpiece, reducing the tedium of manual operation, and improving the overall efficiency of laser welding.

[0018] Preferably, the diameter of the end of the vent near the first pressure plate is greater than the diameter of the end of the vent away from the first pressure plate.

[0019] By adopting the above technical solution, the diameter of the vent hole is larger at the end closer to the first pressure plate and smaller at the end farther from the first pressure plate. This structural design allows for a more uniform airflow distribution when the inert gas flows out. Specifically, the larger end helps to accommodate more inert gas and reduce the pressure difference when the gas flows out, thereby ensuring that the gas can flow smoothly and evenly from the annular vent hole to the welding area, effectively preventing oxidation during the welding process, and thus significantly improving the quality of laser welding.

[0020] Preferably, the diameter of the end of the welding hole near the second pressure plate is smaller than the diameter of the end of the welding hole away from the second pressure plate.

[0021] By adopting the above technical solution, the diameter of the end of the welding hole near the second pressure plate is smaller than the diameter of the end of the welding hole away from the second pressure plate, thus forming a conical structure. This structure can effectively guide the laser beam to accurately focus on the welding area, improving the precision and energy concentration of laser welding, thereby further improving the welding quality.

[0022] In summary, this application has the following beneficial technical effects:

[0023] 1. Through the cooperation of positioning grooves, placement slots and positioning mechanisms, the workpiece and nut can be accurately positioned quickly, simplifying the operation process and significantly improving welding efficiency;

[0024] 2. The coordinated design of the annular vent and the welding hole ensures that the inert gas can evenly cover the welding area, effectively preventing oxidation and thus improving the welding quality;

[0025] 3. The clamping mechanism not only fixes the workpiece, but also integrates the inert gas delivery function, making the device structure more compact and further optimizing the ease of operation of the welding process. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the annular gas protection device for laser welding of nuts provided in the embodiments of this application;

[0027] Figure 2 This is a partial cross-sectional structural schematic diagram of the annular gas protection device for laser welding of nuts provided in the embodiments of this application;

[0028] Figure 3 This is a schematic diagram of the structure of the worktable and workpiece provided in the embodiments of this application;

[0029] Figure 4 This is a cross-sectional structural diagram of the worktable, positioning mechanism, and workpiece provided in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Worktable; 11. Positioning groove; 2. Positioning mechanism; 21. Placement slot; 22. Positioning hole; 23. Positioning post; 24. Guide block; 3. Clamping mechanism; 31. First pressure plate; 311. Welding hole; 312. Air inlet; 313. Air supply channel; 32. Second pressure plate; 321. Annular air outlet; 33. Position adjustment assembly; 331. Mounting bracket; 332. Cylinder; 4. Workpiece; 5. Nut. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0032] This application discloses an annular gas protection device for laser welding of nuts.

[0033] Reference Figure 1 , Figure 2 and Figure 3 A ring gas protection device for laser welding of nuts includes a worktable 1, a positioning groove 11 formed on the worktable 1, a positioning mechanism 2 for positioning workpiece 4, and a clamping mechanism 3 for clamping workpiece 4.

[0034] The clamping mechanism 3 includes a first pressure plate 31, a second pressure plate 32 fixedly disposed below and connected to the first pressure plate 31, a position adjustment component 33 connected to the first pressure plate 31, a welding hole 311 formed on the first pressure plate 31, an air inlet 312, and an annular air outlet 321 formed on the second pressure plate 32. The air inlet 312 communicates with the annular air outlet 321, which is located below and outside the welding hole 311 and communicates with it. An air supply channel 313 is formed on the first pressure plate 31, which connects the air inlet 312 and the air outlet. The air supply channel 313 has an annular structure.

[0035] The diameter of the vent hole near the first pressure plate 31 is larger than the diameter of the vent hole away from the first pressure plate 31. The diameter of the welding hole 311 near the second pressure plate 32 is smaller than the diameter of the welding hole 311 away from the second pressure plate 32.

[0036] The position adjustment assembly 33 includes a mounting bracket 331 fixedly mounted on the workbench 1 and a cylinder 332 fixedly mounted on the mounting bracket 331. The cylinder 332 is fixedly connected to the first pressure plate 31.

[0037] Reference Figure 2 , Figure 3 and Figure 4 The positioning mechanism 2 includes a placement groove 21 formed on the worktable 1, with the workpiece 4 engaging with the placement groove 21. A positioning groove 11 is used to place a nut 5, which is also engaged with the positioning groove 11. The positioning mechanism 2 also includes a positioning hole 22 formed on the workpiece 4 and a positioning post 23 fixedly mounted on the worktable 1, with the positioning post 23 engaging with the positioning hole 22. The positioning groove 11 communicates with the placement groove 21.

[0038] A guide block 24 is fixedly provided at the end of the positioning post 23 away from the worktable 1. The diameter of the end of the guide block 24 away from the positioning post 23 is smaller than the diameter of the end of the guide block 24 close to the positioning post 23. In the embodiments of this application, there are two positioning holes 22 and two positioning posts 23.

[0039] The implementation principle of the annular gas protection device for laser welding of nuts in this application embodiment is as follows: By setting an annular vent 321 and a positioning mechanism 2, uniform delivery of inert gas and rapid positioning of the workpiece 4 are achieved. The annular vent 321 and the annular gas delivery channel 313 ensure that the inert gas is evenly distributed in the welding area, ensuring sufficient protection of the welding area and avoiding oxidation. The multi-point positioning method of the positioning mechanism 2 significantly improves the positioning accuracy and stability of the workpiece 4, thereby improving welding efficiency and quality. The overall structure is simple and reliable, and easy to operate and maintain.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A ring-shaped gas protection device for laser welding of nuts, characterized in that: The device includes a worktable (1), a positioning groove (11) formed on the worktable (1), a positioning mechanism (2) for positioning the workpiece (4), and a clamping mechanism (3) for clamping the workpiece (4). The clamping mechanism (3) includes a first pressure plate (31), a second pressure plate (32) disposed below the first pressure plate (31) and connected to the first pressure plate (31), a position adjustment assembly (33) connected to the first pressure plate (31), and a welding hole (311) formed on the first pressure plate (31). An air inlet (312) and an annular air outlet (321) are provided on the second pressure plate (32). The air inlet (312) is connected to the annular air outlet (321). The annular air outlet (321) is located on the outer side below the welding hole (311) and is connected to the welding hole (311). The positioning mechanism (2) includes a placement groove (21) provided on the worktable (1). The workpiece (4) is engaged with the placement groove (21). The positioning groove (11) is used to place the nut (5).

2. The annular gas protection device for laser welding of nuts according to claim 1, characterized in that: The first pressure plate (31) is provided with an air supply channel (313), which is used to connect the air inlet (312) and the air outlet. The air supply channel (313) is a ring structure.

3. The annular gas protection device for laser welding of nuts according to claim 1, characterized in that: The positioning mechanism (2) further includes a positioning hole (22) opened on the workpiece (4) and a positioning post (23) set on the worktable (1), wherein the positioning post (23) is engaged with the positioning hole (22).

4. The annular gas protection device for laser welding of nuts according to claim 3, characterized in that: The positioning post (23) is provided with a guide block (24) at the end away from the worktable (1). The diameter of the end of the guide block (24) away from the positioning post (23) is smaller than the diameter of the end of the guide block (24) close to the positioning post (23).

5. The annular gas protection device for laser welding of nuts according to claim 4, characterized in that: The number of positioning holes (22) and positioning posts (23) is multiple.

6. The annular gas protection device for laser welding of nuts according to claim 1, characterized in that: The position adjustment assembly (33) includes a mounting bracket (331) disposed on the workbench (1) and a cylinder (332) disposed on the mounting bracket (331), the cylinder (332) being connected to the first pressure plate (31).

7. The annular gas protection device for laser welding of nuts according to claim 1, characterized in that: The diameter of the end of the vent near the first pressure plate (31) is greater than the diameter of the end of the vent away from the first pressure plate (31).

8. The annular gas protection device for laser welding of nuts according to claim 1, characterized in that: The diameter of the end of the welding hole (311) near the second pressure plate (32) is smaller than the diameter of the end of the welding hole (311) away from the second pressure plate (32).

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