A welding device for part processing

Abstract

The present invention discloses a welding device for part processing, which relates to the technical field of mechanical part welding. It includes a processing table and further includes a clamping device. Among them, a placement rack is fixedly installed on the top of the processing table, a placement hole is opened on the top of the placement rack, a welding device is arranged inside the placement hole, a support groove is opened on the top of the processing table, a support rod is fixedly installed on the inner wall of the support groove, a displacement device is slidably installed on the circumferential surface of the support rod, a support frame is fixedly installed on the top of the processing table, and a support plate is fixedly installed on the surface of the displacement device. The two arc-shaped plates move away from each other and contact the inner wall of the tubular workpiece and squeeze and fix the inner wall of the tubular workpiece. Fixing the inner wall of the tubular workpiece can ensure the stability of the position of the tubular workpiece during the welding process, which helps to avoid problems such as weld offset or uneven quality caused by the instability of the position of the tubular workpiece during the welding process.

Description

[0001] This application is a divisional application of the application filed on October 8, 2024, with the application number 202411392525.4 and the invention title "A Welding Device for Machining Mechanical Parts". Technical Field

[0002] The present invention relates to the technical field of mechanical part welding, and specifically to a welding device for part machining. Background Art

[0003] The welding device for part machining usually consists of parts such as a welding device, a control device, a cooling system, and a protection device.

[0004] The patent with the patent announcement number CN221337236U relates to an automatic welding device for machining mechanical parts, including a workbench. Above the workbench, there is an adjusting mechanism. Two support plates are fixedly arranged on the lower surface of the workbench. Between the two support plates, a mounting plate is horizontally fixed. Above the mounting plate, there is a driving mechanism. The back side of the workbench is fixedly provided with an automatic welding device main body. For this automatic welding device for machining mechanical parts, when starting the motor, the movable column drives two first gears to rotate. Since the two mounting boxes and the two moving plates are located outside the movable column and do not contact the movable column, the two mounting boxes and the two moving plates will not be affected by the rotation of the movable column. Ring-shaped chutes slidably connected to a plurality of sliding rods are provided on the left and right sides of the two first gears, positioning the first gears, enabling the two first gears to slide outside the movable column and be driven by the movable column to rotate, and making the workpiece start to rotate, achieving the purpose of facilitating the adjustment of the welding angle of the workpiece.

[0005] In the above patent, by providing ring-shaped chutes slidably connected to a plurality of sliding rods on the left and right sides of the two first gears, the first gears are positioned, enabling the two first gears to slide outside the movable column and be driven by the movable column to rotate, and making the workpiece start to rotate, achieving the purpose of facilitating the adjustment of the welding angle of the workpiece. However, when welding a tubular workpiece, it is difficult to fix the inner wall of the workpiece. During the welding process, if the inner wall of the pipe is not firmly fixed, the pipe will move or shake during the welding process, thereby increasing the safety risk of the welding operation and affecting the weld quality. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a welding device for part machining, which solves the problems raised in the above background art.

[0007] To achieve the above object, the present invention is realized through the following technical solutions: A welding device for part processing, including a processing table, further including a clamping device. Among them, a placement rack is fixedly installed on the top of the processing table, a placement hole is opened on the top of the placement rack, a welding device is arranged inside the placement hole, a support groove is opened on the top of the processing table, a support rod is fixedly installed on the inner wall of the support groove, a displacement device is slidably installed on the circumferential surface of the support rod, a support frame is fixedly installed on the top of the processing table, and a support plate is fixedly installed on the surface of the displacement device. Among them, the clamping device includes a load-bearing plate, load-bearing rods, a U-shaped plate, a stabilizing plate, stabilizing rods, a sliding plate, L-shaped rods, and arc-shaped plates. The two L-shaped rods move away from each other under the extrusion of the U-shaped plate. The two L-shaped rods moving away from each other drive the two arc-shaped plates to move away from each other. The two arc-shaped plates moving away from each other contact the inner wall of the tubular workpiece and squeeze and fix the inner wall of the tubular workpiece. The load-bearing plate is fixedly installed on the surface of the support plate. The load-bearing rods slidably penetrate the front and rear walls of the load-bearing plate. The U-shaped plate is fixedly installed at both ends of the load-bearing rods. The stabilizing plate is fixedly installed on one side of the support plate close to the displacement device. The stabilizing rods are fixedly installed at the bottom of the stabilizing plate. The sliding plate is slidably installed on the circumferential surface of the stabilizing rods. The L-shaped rods are fixedly installed on the side of the sliding plate away from the displacement device. The arc-shaped plates are fixedly installed on the tops of the L-shaped rods.

[0008] According to the above technical solution, a load-bearing spring is arranged between the load-bearing plate and the load-bearing rods. The load-bearing spring can drive the load-bearing rods to reset. A stabilizing groove is opened on the surface of the support plate. One end of the L-shaped rod close to the displacement device is set as an inclined surface.

[0009] According to the above technical solution, a first spring is arranged between the stabilizing rods and the sliding plate. The first spring can drive the sliding plate to reset. The arc-shaped plates are elastic. The sliding plate contacts the inner wall of the stabilizing groove. There are two groups of stabilizing plates, stabilizing rods, sliding plates, L-shaped rods, and arc-shaped plates. And in the other group, the stabilizing rods are fixedly installed on the tops of the stabilizing plates, and the arc-shaped plates are fixedly installed on the bottoms of the L-shaped rods.

[0010] According to the above technical solution, it further includes a support device and a detection device. The support device includes an auxiliary frame, auxiliary rods, a rotating rod, a lifting plate, a return spring, and a hollow block. The lifting plate is squeezed by the auxiliary rods, so that one end of the lifting plate close to the tubular workpiece rotates upward. The upward rotation of the lifting plate contacts the bottom of the tubular workpiece to assist in supporting the bottom of the tubular workpiece. The auxiliary frame is fixedly installed at the bottom of the support plate. The auxiliary rods slidably penetrate the top of the auxiliary frame. The rotating rod rotates through the inner and outer walls of the auxiliary frame. The lifting plate is fixedly installed on the circumferential surface of the rotating rod. The return spring is arranged between the auxiliary frame and the auxiliary rods. The hollow block is fixedly installed on the top inner wall of the auxiliary frame.

[0011] According to the above technical solution, the end of the auxiliary rod close to the L-shaped rod is set as an arc surface, the hollow block contacts the top of the inner wall of the auxiliary frame, and a clockwork spring is arranged between the rotating rod and the auxiliary frame, and the rotating rod can be driven to reset by the clockwork spring.

[0012] According to the above technical solution, the detection device includes a protection frame, a detection frame, a detection plate, a detection rod, a limit frame, a limit plate, a limit rod, a button and a protection groove. The limit plate moves downward to drive the limit rod to move downward. The limit rod moves downward to break away from the contact with the protective groove and releases the limit on the button. The protection frame is fixedly installed at the bottom of the auxiliary frame, the detection frame is fixed through the bottom of the inner wall of the protection frame, the detection plate is slidably installed on the inner wall of the detection frame, the detection rod is fixedly installed on the top of the detection plate, the limit frame is fixedly installed on the side of the displacement device away from the support frame, the limit plate is slidably installed on the inner wall of the limit frame, the limit rod is fixedly installed on the bottom of the limit plate, the button is fixedly installed on the side of the displacement device away from the support frame, and the protection groove is opened on the surface of the button.

[0013] According to the above technical solution, a hose is provided between the detection frame and the limit frame, the button is electrically connected to the welding device, the limit rod is in contact with the inner wall of the protection groove, and the button can be limited by the limit rod and the protection groove.

[0014] According to the above technical solution, liquid is arranged inside the detection frame, liquid is arranged inside the limit frame, a No. 2 spring is arranged between the detection frame and the detection plate, one end of the No. 2 spring is arranged at the bottom of the inner wall of the detection frame and the other end is arranged at the bottom of the detection plate, and the No. 2 spring can drive the detection plate to reset.

[0015] The present invention provides a welding device for parts processing, which has the following beneficial effects:

[0016] (1) The welding equipment used for processing the parts drives two arc plates to move backwards by moving two L-shaped rods backwards. The two arc plates move backwards to contact the inner wall of the tubular workpiece and squeeze and fix the inner wall of the tubular workpiece. Fixing the inner wall of the tubular workpiece can ensure the stability of the position of the tubular workpiece during welding, make the position and quality of the welding weld more accurate, and help avoid the problem of weld offset or uneven quality caused by the unstable position of the tubular workpiece during welding, thereby improving the overall welding quality. At the same time, the tubular workpiece is preliminarily positioned by the support frame before welding. The support frame can provide stable support and positioning, ensure the accurate position of the tubular workpiece before clamping, and avoid welding deviation or quality problems caused by inaccurate position of the tubular workpiece.

[0017] (2) The welding equipment for processing this part uses the lifting plate to rotate upward and contact the bottom of the tubular workpiece to provide auxiliary support for the bottom of the tubular workpiece. When the lifting plate rotates upward and contacts the bottom of the tubular workpiece, it can provide additional support force to support the tubular workpiece and prevent it from shaking or moving during the welding process, thereby further ensuring the accuracy and consistency of the weld position during the welding process. At the same time, the rotating rod rotates downward to drive the lifting plate to rotate downward and reset. When the lifting plate rotates and resets, it impacts the hollow block to generate vibration. The vibration of the lifting plate shakes off the surface welding slag, which can make the contact between the lifting plate and the bottom of the tubular workpiece closer and improve the supporting effect of the lifting plate.

[0018] (3) The welding equipment for processing this part uses the limiting plate to move downward to drive the limiting rod to move downward. When the limiting rod moves downward, it disengages from the contact with the protection groove and releases the limit on the button. Only after the limit on the button is released can the button be pressed to drive the welding device to perform welding operations. Ensuring that the tubular workpiece is stably fixed before welding can reduce the safety risks caused by the sudden movement or inclination of the tubular workpiece during the welding process, protect the safety of operators and equipment, and further avoid problems such as welding position deviation or poor weld quality caused by the improper fixation of the tubular workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the position structure of the placement hole and the welding device of the present invention;

[0021] Figure 3 is a schematic diagram of the position structure of the support rod and the displacement device of the present invention;

[0022] Figure 4 is the present invention Figure 3 magnified schematic diagram of the structure of part A;

[0023] Figure 5 is a schematic diagram of the position structure of the detection frame and the detection plate of the present invention;

[0024] Figure 6 is the present invention Figure 5 magnified schematic diagram of the structure of part B;

[0025] Figure 7 is a schematic diagram of the position structure of the rotating rod and the lifting plate of the present invention.

[0026] In the figure: 1, processing table; 2, placement rack; 3, placement hole; 4, welding device; 5, support groove; 6, support rod; 7, support frame; 8, displacement device; 9, support plate; 10, load-bearing plate; 11, load-bearing rod; 12, load-bearing spring; 13, U-shaped plate; 14, stabilizing plate; 15, stabilizing rod; 16, sliding plate; 17, L-shaped rod; 18, arc-shaped panel; 19, stabilizing groove; 201, auxiliary frame; 202, auxiliary rod; 203, rotating rod; 204, lifting plate; 205, return spring; 206, hollow block; 211, protection frame; 212, detection frame; 213, detection plate; 214, detection rod; 215, limiting frame; 216, limiting plate; 217, limiting rod; 218, button; 219, protection groove. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1-6 , an embodiment of the present invention is: a welding device for part processing, including a processing table 1, and further including a clamping device. Among them, a placement rack 2 is fixedly installed on the top of the processing table 1, a placement hole 3 is opened on the top of the placement rack 2, a welding device 4 is arranged inside the placement hole 3, a support groove 5 is opened on the top of the processing table 1, a support rod 6 is fixedly installed on the inner wall of the support groove 5, a displacement device 8 is slidably installed on the circumferential surface of the support rod 6, a support frame 7 is fixedly installed on the top of the processing table 1, and a support plate 9 is fixedly installed on the surface of the displacement device 8. Among them, the clamping device includes a load-bearing plate 10, a load-bearing rod 11, a U-shaped plate 13, a stabilizing plate 14, a stabilizing rod 15, a sliding plate 16, an L-shaped rod 17 and an arc-shaped panel 18. The load-bearing plate 10 is fixedly installed on the surface of the support plate 9, the load-bearing rod 11 slidably penetrates through the front and rear walls of the load-bearing plate 10, the U-shaped plate 13 is fixedly installed at both ends of the load-bearing rod 11, the stabilizing plate 14 is fixedly installed on the side of the support plate 9 close to the displacement device 8, the stabilizing rod 15 is fixedly installed at the bottom of the stabilizing plate 14, the sliding plate 16 is slidably installed on the circumferential surface of the stabilizing rod 15, the L-shaped rod 17 is fixedly installed on the side of the sliding plate 16 away from the displacement device 8, and the arc-shaped panel 18 is fixedly installed on the top of the L-shaped rod 17. Fixing the inner wall of the tubular workpiece can ensure the stability of the position of the tubular workpiece during the welding process, which helps to avoid problems such as weld offset or uneven quality caused by the unstable position of the tubular workpiece during the welding process, thereby improving the overall welding quality.

[0029] A load-bearing spring 12 is arranged between the load-bearing plate 10 and the load-bearing rod 11. The load-bearing rod 11 can be driven to reset by the load-bearing spring 12. A stabilizing groove 19 is formed on the surface of the support plate 9. One end of the L-shaped rod 17 close to the displacement device 8 is provided with an inclined surface.

[0030] A first spring is arranged between the stabilizing rod 15 and the sliding plate 16. The sliding plate 16 can be driven to reset by the first spring. The arc-shaped panel 18 is elastic. The sliding plate 16 contacts the inner wall of the stabilizing groove 19. There are two groups of stabilizing plates 14, stabilizing rods 15, sliding plates 16, L-shaped rods 17 and arc-shaped panels 18. In the other group, the stabilizing rod 15 is fixedly installed at the top of the stabilizing plate 14, and the arc-shaped panel 18 is fixedly installed at the bottom of the L-shaped rod 17.

[0031] During the operation of this embodiment: Place two sections of tubular workpieces on the top of the support frame 7 for preliminary positioning. After the tubular workpieces are placed stably, the displacement device 8 operates and moves in the direction close to the tubular workpieces. The displacement device 8 moves in the direction close to the tubular workpieces, driving the support plate 9 to move in the direction close to the tubular workpieces. The support plate 9 moves in the direction close to the tubular workpieces, driving the U-shaped plate 13 to move. The U-shaped plate 13 moves and contacts the tubular workpieces and clamps the tubular workpieces. When the U-shaped plate 13 moves, it drives the load-bearing rod 11 to move. The load-bearing rod 11 moves and squeezes the load-bearing spring 12. The load-bearing spring 12 deforms and stores energy under the extrusion of the load-bearing rod 11. At the same time, the U-shaped plate 13 moves in the direction close to the sliding plate 16 under the reaction force of the extruded tubular workpieces. The U-shaped plate 13 moves in the direction close to the sliding plate 16 and contacts two L-shaped rods 17 and squeezes the two L-shaped rods 17. The two L-shaped rods 17 move away from each other under the extrusion of the U-shaped plate 13. The two L-shaped rods 17 move away from each other, driving the two arc-shaped panels 18 to move away from each other. The two arc-shaped panels 18 move away from each other and contact the inner wall of the tubular workpieces and squeeze and fix the inner wall of the tubular workpieces. When the two L-shaped rods 17 move away from each other, they drive the two sliding plates 16 to move. The two sliding plates 16 move and squeeze the first spring. The first spring deforms and stores energy under the extrusion of the sliding plate 16. After the two sections of tubular workpieces are positioned and clamped stably, the welding device 4 operates to weld the two sections of tubular workpieces. After the welding operation is completed, the displacement device 8 moves away from the tubular workpieces, so that the load-bearing rod 11 moves in the direction close to the tubular workpieces under the elastic force of the load-bearing spring 12. The load-bearing rod 11 moves and drives the U-shaped plate 13 to move away from the contact with the L-shaped rod 17. After the L-shaped rod 17 disengages from the contact with the U-shaped plate 13, the two sliding plates 16 move towards each other under the elastic force of the first spring. The two sliding plates 16 move towards each other, driving the two L-shaped rods 17 to move towards each other. The two L-shaped rods 17 move towards each other, driving the two arc-shaped panels 18 to move towards each other and reset to disengage from the contact with the inner wall of the tubular workpieces, facilitating the removal of the tubular workpieces.

[0032] Please refer to Figures 1-7, on the basis of the above embodiments, in another embodiment of the present invention, it further includes a support device and a detection device. The support device includes an auxiliary frame 201, an auxiliary rod 202, a rotating rod 203, a lifting plate 204, a return spring 205, and a hollow block 206. The auxiliary frame 201 is fixedly installed at the bottom of the support plate 9. The auxiliary rod 202 slidably penetrates through the top of the auxiliary frame 201. The rotating rod 203 rotatably penetrates through the inner and outer walls of the auxiliary frame 201. The lifting plate 204 is fixedly installed on the circumferential surface of the rotating rod 203. The return spring 205 is arranged between the auxiliary frame 201 and the auxiliary rod 202. The hollow block 206 is fixedly installed at the top of the inner wall of the auxiliary frame 201. The lifting plate 204 rotates upward and contacts the bottom of the tubular workpiece, which can provide additional support force to support the tubular workpiece. At the same time, the vibration of the lifting plate 204 to shake off the surface welding slag can make the contact between the lifting plate 204 and the bottom of the tubular workpiece closer, improving the support effect of the lifting plate 204.

[0033] One end of the auxiliary rod 202 close to the L-shaped rod 17 is set as an arc surface. The hollow block 206 contacts the top of the inner wall of the auxiliary frame 201. A clockwork spring is arranged between the rotating rod 203 and the auxiliary frame 201, and the rotating rod 203 can be driven to reset by the clockwork spring.

[0034] The detection device includes a protection frame 211, a detection frame 212, a detection plate 213, a detection rod 214, a limit frame 215, a limit plate 216, a limit rod 217, a button 218, and a protection groove 219. The protection frame 211 is fixedly installed at the bottom of the auxiliary frame 201. The detection frame 212 is fixedly penetrated through the bottom of the inner wall of the protection frame 211. The detection plate 213 is slidably installed on the inner wall of the detection frame 212. The detection rod 214 is fixedly installed on the top of the detection plate 213. The limit frame 215 is fixedly installed on the side of the displacement device 8 away from the support frame 7. The limit plate 216 is slidably installed on the inner wall of the limit frame 215. The limit rod 217 is fixedly installed at the bottom of the limit plate 216. The button 218 is fixedly installed on the side of the displacement device 8 away from the support frame 7. The protection groove 219 is opened on the surface of the button 218, ensuring that the welding operation is carried out after the tubular workpiece is stably fixed, which can reduce the safety risks brought by the sudden movement or inclination of the tubular workpiece during the welding process and protect the safety of the operator and the equipment.

[0035] A hose is arranged between the detection frame 212 and the limit frame 215. The button 218 is electrically connected to the welding device 4. The limit rod 217 contacts the inner wall of the protection groove 219, and the button 218 can be limited by the limit rod 217 and the protection groove 219.

[0036] There is liquid inside the detection frame 212 and inside the limit frame 215. A second spring is arranged between the detection frame 212 and the detection plate 213. One end of the second spring is arranged at the bottom of the inner wall of the detection frame 212 and the other end is arranged at the bottom of the detection plate 213. The detection plate 213 can be driven to reset by the second spring.

[0037] When the present embodiment is working, the two L-shaped rods 17 move away from each other and contact the auxiliary rod 202 and squeeze the auxiliary rod 202. The auxiliary rod 202 moves downward under the pressure of the L-shaped rod 17. The auxiliary rod 202 squeezes the return spring 205. The return spring 205 is deformed and accumulates force under the pressure of the auxiliary rod 202. At the same time, the auxiliary rod 202 moves downward and contacts the lifting plate 204 and squeezes the lifting plate 204. The lifting plate 204 is squeezed by the auxiliary rod 202 so that the lifting plate 204 is close to the end of the tubular workpiece and rotates upward. The lifting plate 204 rotates upward and contacts the bottom of the tubular workpiece to provide auxiliary support for the bottom of the tubular workpiece, and the lifting plate 20 The upward rotation will drive the rotating rod 203 to rotate, and the rotating rod 203 rotates to squeeze the spring spring. The spring spring is squeezed by the rotating rod 203 to deform and accumulate force. After the two L-shaped rods 17 move toward each other and break away from the contact with the auxiliary rod 202, the auxiliary rod 202 moves upward and resets under the action of the reset spring 205. The auxiliary rod 202 moves upward and resets to break away from the contact with the lifting plate 204. After the lifting plate 204 breaks away from the contact with the auxiliary rod 202, the rotating rod 203 rotates downward under the elastic force of the spring spring. The rotating rod 203 rotates downward and drives the lifting plate 204 to rotate downward and reset. The lifting plate 204 rotates and resets to hit the hollow block 206 to generate vibration.

[0038] The lifting plate 204 is squeezed by the auxiliary rod 202 so that the end of the lifting plate 204 away from the tubular workpiece rotates downward, and the end of the lifting plate 204 away from the tubular workpiece rotates downward to contact the detection rod 214 and squeeze the detection rod 214. The detection rod 214 moves downward under the pressure of the end of the lifting plate 204 away from the tubular workpiece. The downward movement of the detection rod 214 drives the detection plate 213 to move downward. The detection plate 213 moves downward to squeeze the liquid inside the detection frame 212. The liquid inside the detection frame 212 is squeezed. The liquid squeezed to the detection plate 213 enters the limit frame 215 through the hose, and the liquid entering the limit frame 215 squeezes the limit plate 216. The limit plate 216 moves downward due to the squeeze of the liquid entering the limit frame 215. The limit plate 216 moves downward, driving the limit rod 217 to move downward. The limit rod 217 moves downward to break away from the contact with the protective groove 219 and releases the limit on the button 218. Only after the limit of the button 218 is released, the button 218 can be pressed to drive the welding device 4 to perform welding operations.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for part processing, comprising a processing table (1), characterized in that: It also includes a clamping device, a supporting device and a detecting device; Among them, a placing rack (2) is fixedly installed on the top of the processing table (1), a placing hole (3) is opened on the top of the placing rack (2), a welding device (4) is arranged inside the placing hole (3), a supporting groove (5) is opened on the top of the processing table (1), a supporting rod (6) is fixedly installed on the inner wall of the supporting groove (5), a displacement device (8) is slidably installed on the circumferential surface of the supporting rod (6), a supporting frame (7) is fixedly installed on the top of the processing table (1), and a supporting plate (9) is fixedly installed on the surface of the displacement device (8); Among them, the clamping device includes a load-bearing plate (10), a load-bearing rod (11), a U-shaped plate (13), a stabilizing plate (14), a stabilizing rod (15), a sliding plate (16), an L-shaped rod (17) and an arc-shaped panel (18). The load-bearing plate (10) is fixedly installed on the surface of the supporting plate (9). The load-bearing rod (11) slidably penetrates through the front and rear walls of the load-bearing plate (10). The U-shaped plate (13) is fixedly installed at both ends of the load-bearing rod (11). The stabilizing plate (14) is fixedly installed on one side of the supporting plate (9) close to the displacement device (8). The stabilizing rod (15) is fixedly installed at the bottom of the stabilizing plate (14). The sliding plate (16) is slidably installed on the circumferential surface of the stabilizing rod (15). The L-shaped rod (17) is fixedly installed on one side of the sliding plate (16) away from the displacement device (8). The arc-shaped panel (18) is fixedly installed on the top of the L-shaped rod (17); A load-bearing spring (12) is arranged between the load-bearing plate (10) and the load-bearing rod (11). A stabilizing groove (19) is opened on the surface of the supporting plate (9). One end of the L-shaped rod (17) close to the displacement device (8) is provided with an inclined surface; A first spring is arranged between the stabilizing rod (15) and the sliding plate (16). The arc-shaped panel (18) is elastic. The sliding plate (16) is in contact with the inner wall of the stabilizing groove (19); The supporting device includes an auxiliary frame (201), an auxiliary rod (202), a rotating rod (203), a lifting plate (204), a reset spring (205) and a hollow block (206). The auxiliary frame (201) is fixedly installed at the bottom of the supporting plate (9). The auxiliary rod (202) slidably penetrates through the top of the auxiliary frame (201). The rotating rod (203) rotatably penetrates through the inner and outer walls of the auxiliary frame (201). The lifting plate (204) is fixedly installed on the circumferential surface of the rotating rod (203). The reset spring (205) is arranged between the auxiliary frame (201) and the auxiliary rod (202). The hollow block (206) is fixedly installed on the top inner wall of the auxiliary frame (201); One end of the auxiliary rod (202) close to the L-shaped rod (17) is provided with an arc surface. The hollow block (206) is in contact with the top inner wall of the auxiliary frame (201). A clockwork spring is arranged between the rotating rod (203) and the auxiliary frame (201); The detection device includes a protection frame (211), a detection frame (212), a detection plate (213), a detection rod (214), a limit frame (215), a limit plate (216), a limit rod (217), a button (218), and a protection groove (219). The protection frame (211) is fixedly installed at the bottom of the auxiliary frame (201). The detection frame (212) fixedly penetrates the bottom of the inner wall of the protection frame (211). The detection plate (213) is slidably installed on the inner wall of the detection frame (212). The detection rod (214) is fixedly installed at the top of the detection plate (213). The limit frame (215) is fixedly installed on the side of the displacement device (8) away from the support frame (7). The limit plate (216) is slidably installed on the inner wall of the limit frame (215). The limit rod (217) is fixedly installed at the bottom of the limit plate (216). The button (218) is fixedly installed on the side of the displacement device (8) away from the support frame (7). The protection groove (219) is formed on the surface of the button (218). A hose is provided between the detection frame (212) and the limit frame (215). The button (218) is electrically connected to the welding device (4). The limit rod (217) is in contact with the inner wall of the protection groove (219). A liquid is provided inside the detection frame (212). A liquid is provided inside the limit frame (215). A second spring is provided between the detection frame (212) and the detection plate (213).

Images