Welding device for producing and processing environment-friendly C-shaped steel

Abstract

The welding device comprises a first L-shaped plate and a second L-shaped plate, sliding grooves are formed in the horizontal faces and the vertical faces of the first L-shaped plate and the second L-shaped plate correspondingly, moving parts are slidably connected into the sliding grooves, vertical grooves are formed in the two sides of each moving part correspondingly, and first sealing parts are installed in the vertical grooves; second sealing pieces are installed on the two side faces, perpendicular to the vertical groove, of the moving piece, a connecting pipe with one end communicated with vacuumizing equipment is installed in the moving piece, an adjusting piece is installed on the upper surface of the moving piece, and a welding gun is installed in the adjusting piece. The sealing barrel is sealed through the first sealing structure and the second sealing structure, gas overflow generated in the welding process is reduced, the second sealing structure can change the angle of a sector plate through an extrusion structure composed of a supporting plate, an abutting rod and a second elastic piece, the sector plate is made to adapt to sealing of different positions of two pieces of C-shaped steel, and the sealing effect is improved. And the sealing stability is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of C-shaped steel welding, and particularly to a welding device for the production and processing of environment-friendly C-shaped steel. Background Technique

[0002] During the production process of C-shaped steel, welding is required. While melting the welding rod and the welded part, a large amount of smoke and dust is generated. The smoke and dust particles are diffused in the working environment, and long-term inhalation will cause fibrotic lesions of the lung tissue, damaging the physical health of patients.

[0003] The existing method for collecting smoke and dust mainly uses a vacuum extraction device for collecting smoke and dust. However, since the smoke and dust are exposed to the air during welding, a large amount of smoke and dust still cannot be extracted during the extraction process by the vacuum extraction device.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a welding device for the production and processing of environment-friendly C-shaped steel is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding device for the production and processing of environment-friendly C-shaped steel to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A welding device for the production and processing of environment-friendly C-shaped steel, including a first L-shaped plate and a second L-shaped plate. The horizontal part of the first L-shaped plate is in sliding contact with the horizontal part of the second L-shaped plate. The horizontal and vertical planes of the first L-shaped plate and the second L-shaped plate are both provided with sliding grooves. A moving member is slidably connected in the sliding grooves. Vertical grooves are opened on both sides of the moving member. A first sealing member is installed in the vertical grooves. Second sealing members are installed on the two side surfaces of the moving member perpendicular to the vertical grooves. The second sealing members are in contact with the first sealing member. A connecting pipe with one end communicating with a vacuum extraction device is installed in the moving member. An adjusting member is installed on the upper surface of the moving member, and a welding torch is installed in the adjusting member.

[0007] Further, the moving member includes a sealing cylinder. The connecting pipe is installed in the sealing cylinder. A plurality of support rods are installed on both sides of the sealing cylinder. The end of the support rod away from the sealing cylinder is inserted into the sliding groove. The vertical grooves are opened on both sides of the sealing cylinder. Second sealing members are installed on the two side surfaces of the sealing cylinder perpendicular to the vertical grooves. A through groove is opened on the upper surface of the sealing cylinder. The moving member is inserted into the through groove and connected to the second sealing member.

[0008] Further, the first seal includes a sealing plate, both ends of the sealing plate are in contact with two second seals respectively, the sealing plate is inserted into the vertical groove, a plurality of first elastic members are installed at one end of the sealing plate in the vertical groove, and the ends of the first elastic members away from the sealing plate are installed in the vertical groove.

[0009] Further, the second seal includes two round rods. Two round rods are arranged on two side surfaces of the sealing cylinder perpendicular to the sealing plate. Sector plates are rotatably connected to the circumferential surfaces of the two round rods, the sector plates are in contact with the sealing plate, an extrusion member is installed on the side of the round rod facing the sealing cylinder, the extrusion member is connected to the sealing cylinder, moving grooves are formed on the side of the sealing cylinder facing the sector plate and on the side of the sector plate facing the sealing cylinder, a moving block is installed in each of the two moving grooves, and a moving rod is rotatably connected between the two moving blocks.

[0010] Further, the extrusion member includes a support plate, the support plate is connected to the sealing cylinder, a groove is formed on the side of the support plate facing the sector plate, two abutting rods are slidably connected in the groove, second elastic members are installed at the ends of the two abutting rods in the groove, a connecting block is installed at the ends of the two abutting rods outside the groove, the connecting block is connected to the moving member, the round rod is connected to the connecting block, third elastic members are installed on the opposite sides of the two abutting rods, a rotating rod is rotatably connected to the side of the sector plate away from the sealing cylinder, and the end of the third elastic member away from the abutting rod is connected to the rotating rod.

[0011] Further, a pressure sensor is installed in the moving groove on the sector plate, the pressure sensor is electrically connected to the vacuum pumping device, a fourth elastic member is installed on the side of the pressure sensor facing the moving block, and the end of the fourth elastic member away from the pressure sensor is connected to the moving block.

[0012] Further, the moving member includes a moving plate, the moving plate is inserted into the through groove, the welding torch is installed in the moving plate, L-shaped rods are installed on both sides of the moving plate outside the sealing cylinder, and the ends of the L-shaped rods away from the moving block are connected to the connecting block.

[0013] Further, a pulling rod is installed on the side of the sealing cylinder, and a push switch for turning the welding torch on and off is installed on the pulling rod.

[0014] Further, arc surfaces are provided at the corners of the first L-shaped plate and the second L-shaped plate, and an induction switch for turning the welding torch on and off is provided at the arc surface.

[0015] Further, cylinders are installed on one side of the vertical parts of the first L-shaped plate and the second L-shaped plate that face each other. A cross bar is inserted into the two cylinders. Fifth elastic members are installed at both ends of the cross bar, and the ends of the fifth elastic members away from the cross bar are installed inside the cylinders.

[0016] The present invention provides a welding device for the production and processing of environmentally friendly C-shaped steel, which has the following beneficial effects: This welding device for the production and processing of environmentally friendly C-shaped steel, through the mutual cooperation of multiple components, can not only...

[0017] 1. The present invention uses the first sealing structure composed of the first elastic member and the sealing plate, and the second sealing structure composed of the sector plate, round rod, moving block and moving rod to seal the sealing cylinder, reducing the overflow of gas generated during the welding process, thereby reducing the harm to workers. Moreover, the second sealing structure can change the angle of the sector plate by the extrusion structure composed of the support plate, abutting rod and second elastic member, enabling the sector plate to adapt to the sealing of two C-shaped steels in different positions and ensuring the stability of the sealing.

[0018] 2. The present invention uses the first L-shaped plate and the second L-shaped plate to limit the movement of the sealing cylinder, ensuring that the movement trajectory of the moving cylinder is a straight line, thereby avoiding the situation of curved welding trajectories during the welding process. Moreover, the distance between the first L-shaped plate and the second L-shaped plate is adjusted according to the welding angle between the two C-shaped steels, further ensuring the stability of the welding gun during welding.

[0019] 3. After the sector plate contacts two C-shaped steels with different angles, the present invention drives the moving block to move in the moving groove, thereby squeezing the pressure sensor, enabling the different pressures received by the pressure sensor to adjust the power of the vacuum pumping device, and realizing the adjustment of the air extraction speed in different-sized sealed spaces inside the sealing cylinder. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a welding device for the production and processing of environmentally friendly C-shaped steel according to the present invention; Figure 2 is a schematic structural diagram of the sealing cylinder of a welding device for the production and processing of environmentally friendly C-shaped steel according to the present invention; Figure 3 is an assembly schematic diagram of the sealing cylinder and the sealing plate of a welding device for the production and processing of environmentally friendly C-shaped steel according to the present invention; Figure 4 is an assembly schematic diagram of the support plate, abutting rod and sector plate of a welding device for the production and processing of environmentally friendly C-shaped steel according to the present invention; Figure 5 is an assembly schematic diagram of the support plate, abutting rod and connecting block of a welding device for the production and processing of environmentally friendly C-shaped steel according to the present invention; Figure 6Schematic assembly diagram of the sector plate and the sealing cylinder of a welding device for the production and processing of environmentally friendly C-shaped steel according to the present invention; Figure 7 Schematic assembly diagram of the sector plate of a welding device for the production and processing of environmentally friendly C-shaped steel according to the present invention when contacting the sealing cylinder at the convex surface, parallel surface and concave surface of two C-shaped steels.

[0021] In the figure: 1. First L-shaped plate; 2. Slide groove; 3. Second L-shaped plate; 4. Arc surface; 5. Cylinder; 6. Cross bar; 7. Pulling rod; 8. Welding torch; 9. Moving plate; 10. Connecting pipe; 11. Sealing cylinder; 12. Support rod; 13. Sealing plate; 14. Sector plate; 15. L-shaped rod; 16. First elastic member; 17. Support plate; 18. Second elastic member; 19. Supporting rod; 20. Third elastic member; 21. Round rod; 22. Moving groove; 23. Connecting block; 24. Moving block; 25. Fourth elastic member; 26. Pressure sensor; 27. Moving rod. Detailed implementation manners

[0022] Please refer to Figures 1 to 7 , the present invention provides a technical solution: a welding device for the production and processing of environmentally friendly C-shaped steel, including a first L-shaped plate 1 and a second L-shaped plate 3. The horizontal part of the first L-shaped plate 1 is in sliding contact with the horizontal part of the second L-shaped plate 3. Slide grooves 2 are provided on both the horizontal and vertical planes of the first L-shaped plate 1 and the second L-shaped plate 3. A sealing cylinder 11 is slidably connected in the slide groove 2. A connecting pipe 10 with one end communicated with a vacuum pumping device is installed in the sealing cylinder 11. A plurality of support rods 12 are installed on both sides of the sealing cylinder 11. One end of the support rod 12 away from the sealing cylinder 11 is inserted into the slide groove 2. A through groove is provided on the upper surface of the sealing cylinder 11, and a moving plate 9 is inserted into the through groove. A welding torch 8 is installed in the moving plate 9.

[0023] The support rod 12 is used to ensure the movement of the sealing cylinder 11 in the slide groove 2, and a plurality of support rods 12 can be adapted to be used alternately on the first L-shaped plate 1 and the second L-shaped plate 3, ensuring that the sealing cylinder 11 drives the welding torch 8 to perform welding according to the track of the slide groove 2 provided on the first L-shaped plate 1 and the second L-shaped plate 3. Moreover, the distance between the first L-shaped plate 1 and the second L-shaped plate 3 is adjusted according to the welding angle between the two C-shaped steels, further ensuring the stability of the welding of the welding torch 8.

[0024] Vertical grooves are provided on both sides of the sealing cylinder 11. A sealing plate 13 is inserted into the vertical groove. A plurality of first elastic members 16 are installed at one end of the sealing plate 13 in the vertical groove. The first elastic member 16 is a spring, and the spring is in a compressed state. One end of the first elastic member 16 away from the sealing plate 13 is installed in the vertical groove. By using the first sealing structure composed of the first elastic member 16 and the sealing plate 13, it is ensured that the two side surfaces of the sealing cylinder 11 parallel to the first L-shaped plate 1 are in contact with the two C-shaped steels, reducing the overflow of gas from both sides during the welding process, and thus reducing the harm to workers.

[0025] Two round rods 21 are arranged on the two sides of the sealing cylinder 11 perpendicular to the vertical groove, and two round rods 21 are arranged on the two sides of the sealing cylinder 11 perpendicular to the sealing plate 13. The annular surfaces of the two round rods 21 are rotatably connected with the sector plate 14, and the sector plate 14 is in contact with the sealing plate 13. A support plate 17 is arranged above the round rod 21, and the support plate 17 is connected to the sealing cylinder 11. A groove is provided on the side of the support plate 17 facing the sector plate 14, and two abutting rods 19 are slidably connected in the groove. A second elastic member 18 is installed at one end of the two abutting rods 19 in the groove. The second elastic member 18 is a spring. The second elastic member 18 is in a compressed state. The two abutting rods 19 are slidably connected in the groove. A connecting block 23 is installed at one end of the holding rod 19 outside the groove, and the round rod 21 is connected to the connecting block 23. A third elastic member 20 is installed on the side opposite to the two supporting rods 19. The third elastic member 20 is a spring. The third elastic member 20 is in a compressed state. The side of the fan plate 14 away from the sealing cylinder 11 is rotatably connected with a rotating rod, and the end of the third elastic member 20 away from the supporting rod 19 is connected to the rotating rod. A moving groove 22 is provided on the side of the sealing cylinder 11 facing the fan plate 14 and the side of the fan plate 14 facing the sealing cylinder 11. Moving blocks 24 are slidably connected in the two moving grooves 22, and a moving rod 27 is rotatably connected between the two moving blocks 24.

[0026] The first sealing structure composed of the first elastic member 16 and the sealing plate 13 and the second sealing structure composed of the fan plate 14, the round rod 21, the moving block 24 and the moving rod 27 seal the sealing tube 11 to reduce the gas overflow generated during the welding process, thereby reducing the harm to the workers. The second sealing structure can change the angle of the fan plate 14 in the extrusion structure composed of the support plate 17, the supporting rod 19 and the second elastic member 18, so that the fan plate 14 can adapt to the sealing of different positions of the two C-shaped steels to ensure the stability of the seal.

[0027] A pressure sensor 26 is installed in the movable groove 22 on the fan-shaped plate 14. The pressure sensor 26 is electrically connected to the vacuum equipment. A fourth elastic member 25 is installed on the side of the pressure sensor 26 facing the movable block. The fourth elastic member 25 is a spring. The fourth elastic member 25 is in a normal state. The end of the fourth elastic member 25 away from the pressure sensor 26 is connected to the movable block 22. After the fan-shaped plate 14 contacts with two C-shaped steels at different angles, the movable block 22 is driven to move in the movable groove, thereby squeezing the pressure sensor 26, so that the different pressures on the pressure sensor 26 adjust the power of the vacuum equipment, thereby realizing the adjustment of the vacuuming speed in the sealed spaces of different sizes in the sealing tube 11.

[0028] An L-shaped rod 15 is mounted on the upper surface of the connecting block 23. One end of the L-shaped rod 15 away from the connecting block 23 is connected to the moving plate 9. By mounting the welding torch 8 on the moving plate 9 and then connecting the moving plate 9, the L-shaped rod 15 and the connecting block 23, the position change of the connecting block 23 is used to drive the position change of the welding torch 8, thereby ensuring the distance between the welding torch 8 and the two C-shaped steels, and further ensuring that the welding distance between the welding torch 8 and the two C-shaped steels is appropriate, reducing welding errors.

[0029] A pulling rod 7 is mounted on the side of the sealing cylinder 11. A push switch for opening and closing the welding torch 8 is mounted on the pulling rod 7. Arc-shaped surfaces 4 are provided at the corners of the first L-shaped plate 1 and the second L-shaped plate 3. An induction switch for opening and closing the welding torch 8 is provided at the arc-shaped surface 4.

[0030] Cylinders 5 are mounted on the opposite sides of the vertical parts of the first L-shaped plate 1 and the second L-shaped plate 3. A cross bar 6 is inserted into the two cylinders 5. Fifth elastic members are mounted at both ends of the cross bar 6. The fifth elastic member is a spring and is in a normal state. The end of the fifth elastic member away from the cross bar 6 is mounted in the cylinder 5. When the C-shaped steel enters between the first L-shaped plate 1 and the second L-shaped plate 3, the fifth elastic member is in a stretched state. When the C-shaped steel is taken out from between the first L-shaped plate 1 and the second L-shaped plate 3 after welding is completed, the fifth elastic member pulls the first L-shaped plate 1 and the second L-shaped plate 3 to restore their positions.

[0031] In summary, when using this welding device for the production and processing of environmentally friendly C-shaped steels, first, the two C-shaped steels are respectively inserted into the space formed by the first L-shaped plate 1 and the second L-shaped plate 3 from both sides. Subsequently, the push switch on the pulling rod 7 is activated, and the welding torch 8 starts to weld the edges of the protrusions of the two C-shaped steels from the vertical part of the first L-shaped plate 1. When the welding of the protrusions is completed, the sealing cylinder 11 moves to the arc-shaped surface 4 on the first L-shaped plate 1. At this time, the sealing cylinder 11 contacts the induction switch provided at the arc-shaped surface 4, and the welding torch 8 stops welding. When the sealing cylinder 11 moves back to the horizontal part of the first L-shaped plate 1 and contacts the induction switch again, the welding torch 8 restarts to weld the horizontal parts of the two C-shaped steels. As it moves, the sealing cylinder 11 gradually enters the chute 2 opened on the second L-shaped plate 3, and the position of the sealing cylinder 11 is limited by the chute 2 on the second L-shaped plate 3. When the sealing cylinder 11 reaches the arc-shaped surface 4 on the second L-shaped plate 3 and contacts the induction switch provided at the arc-shaped surface 4 of the second L-shaped plate 3, the welding torch 8 stops welding again. Subsequently, when the sealing cylinder 11 moves out of the arc-shaped surface 4 again, the welding torch 8 contacts the induction switch again and starts, and at this time, the depressions of the two C-shaped steels are welded. After the welding of the depressions is completed, the push switch on the pulling rod 7 is turned off, and the welding of the three connecting surfaces of the two C-shaped steels is completed.

[0032] When the welding gun 8 is welding at the vertical part of the first L-shaped plate 1, the sealing plate 13 is squeezed by the first elastic member 16 and contacts the C-shaped steel. At the same time, the two fan-shaped plates 14 are squeezed by the third elastic member 20, so that the two fan-shaped plates 14 are also respectively in contact with the two C-shaped steels, thereby forming a seal. When the third elastic member 20 squeezes the fan-shaped plate 14 to make the fan-shaped plate 14 contact with the C-shaped steel, the moving block 24 in the sealing cylinder 11 and the moving plate 9 on the fan-shaped plate 14 are pulled by the moving rod 27, and are thus located where the two fan-shaped plates 14 are close to each other, and the moving plate 9 is restricted by the connecting block 23, so that the convex surface of the welding gun 8 in contact with the two C-shaped steels maintains a stable distance.

[0033] When the welding gun 8 is welding at the horizontal parts of the first L-shaped plate 1 and the second L-shaped plate 3, the sealing plate 13 squeezes the first elastic member 16 to move into the vertical groove, and the fan-shaped plate 14 also deflects and squeezes the third elastic member 20. At this time, the fan-shaped plate 14 at the round rod 21 is still supported by the two horizontal surfaces of the C-shaped steels, so that the supporting rod 19 cannot push the round rod 21 to move to the side away from the welding gun 8. If the round rod 21 cannot move, the connecting block 23 cannot move either. At this time, the convex surface of the welding gun 8 in contact with the two C-shaped steels still maintains a stable distance.

[0034] When the welding gun 8 moves to the vertical part of the second L-shaped plate 3 for welding, that is, when welding the two C-shaped steel recesses, the moving block 24 loses its obstruction and moves to the side away from the support plate 17. The movement of the connecting block 23 drives the moving plate 9 and the welding gun 8 to move toward the two C-shaped steel recesses, thereby ensuring that the welding gun 8 maintains a stable distance from the two C-shaped steels. When the moving block 24 moves toward the two C-shaped steel recesses, it also drives the round rod 21 and the fan-shaped plate 14 connected to the round rod 21 to move toward the two C-shaped steel recesses, so that the two fan-shaped plates 14 are still in contact with the two C-shaped steels to maintain sealing. At this time, the fan-shaped plate 14 and the moving block 24 in the sealing cylinder 11 move to the side away from the two fan-shaped plates 14.

[0035] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A welding device for producing and processing environmentally friendly C-shaped steel, characterized in that: The invention comprises a first L-shaped plate (1) and a second L-shaped plate (3), wherein the horizontal portion of the first L-shaped plate (1) is in sliding contact with the horizontal portion of the second L-shaped plate (3), the horizontal surfaces and vertical surfaces of the first L-shaped plate (1) and the second L-shaped plate (3) are both provided with slide grooves (2), a moving part is slidably connected in the slide grooves (2), both sides of the moving part are provided with vertical grooves, a first sealing part is installed in the vertical grooves, and second sealing parts are installed on both sides of the moving part perpendicular to the vertical grooves, the second sealing part is in contact with the first sealing part, a connecting pipe (10) having one end communicating with a vacuum pumping device is installed in the moving part, an adjusting part is installed on the upper surface of the moving part, and a welding gun (8) is installed in the adjusting part.

2. A welding device for producing and processing environmentally friendly C-shaped steel according to claim 1, characterized in that: The movable member comprises a sealing cylinder (11), the connecting pipe (10) is installed in the sealing cylinder (11), a plurality of support rods (12) are installed on both sides of the sealing cylinder (11), one end of the support rod (12) away from the sealing cylinder (11) is inserted into the slide groove (2), the vertical groove is provided on both sides of the sealing cylinder (11), a second sealing member is installed on two side surfaces of the sealing cylinder (11) perpendicular to the vertical groove, a through groove is provided on the upper surface of the sealing cylinder (11), the movable member is inserted into the through groove and connected to the second sealing member.

3. A welding device for producing and processing environmentally friendly C-shaped steel according to claim 2, characterized in that: The first sealing member comprises a sealing plate (13), two ends of the sealing plate (13) respectively contacting two second sealing members, the sealing plate (13) being inserted into the vertical groove, a plurality of first elastic members (16) being installed at one end of the sealing plate (13) in the vertical groove, and an end of the first elastic member (16) away from the sealing plate (13) being installed in the vertical groove.

4. A welding device for producing and processing environmentally friendly C-shaped steel according to claim 3, characterized in that: The second sealing member comprises two round rods (21). Two round rods (21) are arranged on two side surfaces of the sealing cylinder (11) perpendicular to the sealing plate (13). The annular surfaces of the two round rods (21) are rotatably connected to a sector plate (14). The sector plate (14) is in contact with the sealing plate (13). An extrusion member is installed on the side of the round rod (21) facing the sealing cylinder (11). The extrusion member is connected to the sealing cylinder (11). A movable groove (22) is provided on the side of the sealing cylinder (11) facing the sector plate (14) and the side of the sector plate (14) facing the sealing cylinder (11). A movable block (24) is installed in the two movable grooves (22). A movable rod (27) is rotatably connected between the two movable blocks (24).

5. A welding device for producing and processing environmentally friendly C-shaped steel according to claim 4, characterized in that: The extrusion member comprises a support plate (17), wherein the support plate (17) is connected to the sealing cylinder (11), a groove is provided on a side of the support plate (17) facing the fan-shaped plate (14), two abutting rods (19) are slidably connected in the groove, a second elastic member (18) is installed at one end of the two abutting rods (19) in the groove, a connecting block (23) is installed at one end of the two abutting rods (19) outside the groove, the connecting block (23) is connected to the moving member, the round rod (21) is connected to the connecting block (23), a third elastic member (20) is installed on the opposite sides of the two abutting rods (19), a rotating rod is rotatably connected to the side of the fan-shaped plate (14) facing away from the sealing cylinder (11), and one end of the third elastic member (20) away from the abutting rod (19) is connected to the rotating rod.

6. A welding device for producing and processing environmentally friendly C-shaped steel according to claim 4, characterized in that: A pressure sensor (26) is installed in the movable groove (22) on the sector plate, and the pressure sensor (26) is electrically connected to the vacuum pumping device. A fourth elastic member (25) is installed on the side of the pressure sensor (26) facing the movable block (24), and one end of the fourth elastic member (25) away from the pressure sensor (26) is connected to the movable block (24).

7. The welding device for producing and processing environmentally friendly C-shaped steel according to claim 5, characterized in that: The movable member comprises a movable plate (9), the movable plate (9) being inserted into the through groove, the welding gun (8) being mounted in the movable plate (9), and L-shaped rods (15) being mounted on both sides of the movable plate (9) outside the sealing cylinder (11), and one end of the L-shaped rod (15) away from the movable block (24) being connected to the connecting block (23).

8. The welding device for producing and processing environmentally friendly C-shaped steel according to claim 2 is characterized in that: A pull rod (7) is installed on the side of the sealing cylinder (11), and a push switch for turning the welding gun (8) on and off is installed on the pull rod (7).

9. The welding device for producing and processing environmentally friendly C-shaped steel according to claim 1, characterized in that: The first L-shaped plate (1) and the second L-shaped plate (3) are both provided with arc-shaped surfaces (4) at their corners, and an induction switch for turning on and off the welding gun (8) is provided on the arc-shaped surface (4).

10. The welding device for producing and processing environmentally friendly C-shaped steel according to claim 1, characterized in that: A cylinder (5) is installed on one side of the vertical portion of the first L-shaped plate (1) and the vertical portion of the second L-shaped plate (3) opposite to each other, a cross bar (6) is inserted into the two cylinders (5), and a fifth elastic member is installed at both ends of the cross bar (6), and an end of the fifth elastic member away from the cross bar (6) is installed in the cylinder (5).

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