Semi-automatic electric arc welding device and method for automobile parts

Abstract

The invention discloses an automobile part semi-automatic electric arc welding device and method, and relates to the technical field of automobile part welding, the automobile part semi-automatic electric arc welding device comprises a workbench, supporting legs are symmetrically installed at the bottom of the workbench, a welding groove is formed in the top of the workbench in a penetrating mode, a welding gun is arranged above the welding groove, and the automobile part semi-automatic electric arc welding device further comprises a supporting assembly, the supporting assembly is arranged on one side and above the workbench, the supporting assembly comprises a rotating seat and positioning assemblies arranged on the two sides of the rotating seat, the rotating seat is rotationally connected to one side of the workbench, a rotating plate is hinged to the side, away from the workbench, of the rotating seat, and mounting frames are symmetrically mounted on one side of the rotating plate; fixing rods are fixedly mounted on the sides, close to each other, of the two mounting frames; according to the welding device, when parts are welded, it can be guaranteed that welding spots are located on the same straight line, the welding quality is improved, the welding height can be conveniently and rapidly adjusted in the welding process, and convenience and practicability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive component welding, and particularly to a semi-automatic arc welding device and method for automotive components. Background Art

[0002] A semi-automatic arc welding machine means that during the welding process, operations such as wire feeding, arc starting, and current and voltage adjustment are automatically completed by a mechanical or electrical system, while the movement trajectory of the welding torch still needs to be manually controlled.

[0003] For example, an automatic temperature control transformer with the publication number CN115673483B, through a first limiting component and a first adjusting component connected between the main body and the first gun barrel, a second limiting component and a second adjusting component connected between the first gun barrel and the second gun barrel, and according to the scale rings provided on the main body and the second adjusting wheel, when the staff adjusts the angle, by rotating the first adjusting wheel in the first adjusting component to adjust the up and down movement angle of the first gun barrel, after the adjustment is completed, then move the first moving block in the first limiting component to limit the position of the first adjusting wheel. Subsequently, rotate the second adjusting wheel in the second adjusting component to adjust the left and right movement angle of the second gun barrel, and after the adjustment is completed, then move the second moving block in the second limiting component to limit the position of the second adjusting wheel, so that the staff can flexibly adjust the angle of the welding torch without moving the position of the welding torch, greatly increasing the flexibility and practicality of the device. However, in actual use, when welding automotive components by semi-automatic arc welding, the staff needs to always hold the welding torch for welding. When butt welding or spot welding automotive components, it is necessary to keep the movement trajectory of the welding torch as a straight line. Since the welding torch is controlled by the staff, it will be affected by experience during the welding process, and it is easy to deviate during the butt welding process of automotive components, which will affect the welding quality and efficiency, and there are certain defects in use.

[0004] Therefore, we propose a semi-automatic arc welding device and method for automotive components to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of the present invention is to provide a semi-automatic arc welding device and method for automotive components to solve the problems in the above background art that when welding automotive components by semi-automatic arc welding, the staff needs to always hold the welding torch for welding. When butt welding or spot welding automotive components, it is necessary to keep the movement trajectory of the welding torch as a straight line. Since the welding torch is controlled by the staff, it will be affected by experience during the welding process, and it is easy to deviate during the butt welding process of automotive components, which will affect the welding quality and efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution: A semi-automatic arc welding device for automobile parts, including a workbench, support legs are symmetrically installed at the bottom of the workbench, and a welding groove is penetrated through the top of the workbench, and a welding torch is arranged above the welding groove;

[0007] It further includes:

[0008] A support assembly, arranged on one side and above the workbench, the support assembly includes a rotating seat;

[0009] A positioning assembly, arranged on both sides of the rotating seat;

[0010] The rotating seat is rotatably connected to one side of the workbench, a rotating plate is hinged to the side of the rotating seat away from the workbench, mounting brackets are symmetrically installed on one side of the rotating plate, and fixing rods are fixedly installed on the sides of the two mounting brackets close to each other. At the same time, a rotating sleeve is rotatably connected between the two fixing rods, and an adjusting rod is slidably connected inside the rotating sleeve;

[0011] A mounting sleeve is fixedly installed at the top end of the adjusting rod, a moving rod is slidably connected inside the mounting sleeve, a fixing sleeve is fixedly installed at one end of the moving rod, a movable rod is slidably connected inside the fixing sleeve, and a positioning bolt is threadedly connected above the inside of the movable rod. At the same time, support frames are symmetrically installed on one side of the top of the movable rod.

[0012] Preferably, a rotating rod is rotatably connected between the two support frames, a fixing frame is fixedly installed on the outside of the rotating rod, and two groups of limiting blocks are symmetrically installed on both sides of the fixing frame on the outside of the rotating rod. At the same time, positioning blocks are symmetrically installed on both sides of the two support frames close to each other and on both sides of the two groups of limiting blocks, and a positioning sleeve is fixedly installed at the top end of the fixing frame, and a knurled screw is threadedly connected above the inside of the positioning sleeve.

[0013] By adopting the above technical solution, the angle of the welding torch can be finely adjusted during the welding process.

[0014] Preferably, cams are fixedly installed on one side of the outside of the two fixing rods, a through groove is penetrated through one side of the rotating sleeve, a positioning plate is arranged inside the through groove, a plurality of rubber bumps are fixedly installed on one side of the positioning plate, and two groups of mounting blocks are symmetrically installed on both sides of the positioning plate.

[0015] By adopting the above technical solution, it is convenient to position the adjusting rod.

[0016] Preferably, guide rods are slidably connected inside both groups of mounting blocks, and the guide rods are fixedly connected to the rotating sleeve. Moreover, movable frames are fixedly installed on the outer sides of each pair of mounting blocks on each side away from each other. At the same time, a limiting frame is slidably connected to the outer side of the movable frame, and the limiting frame is fixedly connected to the rotating sleeve. And at one end of each pair of movable frames on each side, a moving frame is fixedly installed, and the moving frame is slidably connected to the cam.

[0017] By adopting the above technical solution, when the rotating sleeve rotates to the vertical mounting frame, the moving frame can be pushed to move by the cam.

[0018] Preferably, first magnet blocks are symmetrically installed on both sides of the two fixed rods on the outside of the rotating sleeve, and L-shaped frames are symmetrically installed on both sides of the two mounting frames on both sides of the cam. And a second magnet block is fixedly installed on the side of the L-shaped frame close to the first magnet block, and the second magnet block is adsorbed to the first magnet block.

[0019] By adopting the above technical solution, the rotating sleeve can be positioned by the first magnet block and the second magnet block.

[0020] Preferably, a mounting rod is fixedly installed above the rotating seat on one side of the workbench, and a fixed seat is fixedly installed at the end of the mounting rod away from the workbench. And a limiting rod is fixedly installed inside the fixed seat, and a movable block is slidably connected to the outside of the limiting rod.

[0021] By adopting the above technical solution, the movement of the movable block is limited and supported.

[0022] Preferably, an inclined annular groove is formed on the side of the rotating plate close to the rotating seat, and a spherical member is slidably connected above the inside of the inclined annular groove, and the spherical member is fixedly connected to the movable block.

[0023] By adopting the above technical solution, after the rotating seat rotates half a circle, the spherical member can pull the rotating plate to rotate.

[0024] Preferably, the positioning assembly includes fixed blocks symmetrically arranged on both sides of the rotating seat, and both fixed blocks are fixedly connected to the workbench. And through holes are formed through one side of both fixed blocks. At the same time, positioning pins are inserted into the inside of both fixed blocks, and a positioning hole is formed through one side of the rotating seat, and the positioning pin is adapted to be connected to the positioning hole.

[0025] By adopting the above technical solution, it is convenient to position the rotating seat and facilitate the adjustment of the rotating seat.

[0026] Preferably, a support block is fixedly installed on one side of one fixed block, a positioning rod is slidably connected inside the support block, a positioning groove is formed on the outer side of the positioning pin, the positioning rod is engaged with the positioning groove, a telescopic spring is sleeved on the outer side of the positioning rod on one side of the support block, and both ends of the telescopic spring are fixedly connected to the positioning rod and the support block respectively.

[0027] By adopting the above technical solution, the positioning rod can automatically reset after moving, which is convenient for positioning the positioning pin.

[0028] A semi-automatic arc welding method for automobile parts is as follows:

[0029] Step 1:

[0030] When welding automobile parts, place the two parts to be fixed on the workbench so that the butt joint is parallel to the welding groove above the welding groove. Then, the staff can move the adjusting rod according to the required welding height, which can change the height of the welding torch. The staff can move the movable rod according to the welding position to adjust the front and back position of the welding torch. After adjustment, tighten the positioning bolt to position the movable rod. Then rotate the adjusting rod so that the rotating sleeve rotates on the two fixed rods. After the rotating sleeve rotates, the moving frame rotates. With the rotation of the rotating sleeve, under the action of the cam, the moving frame moves during rotation. Furthermore, the positioning plate can be driven to move through the movable frame and the mounting block. After the positioning plate moves, the rubber bump can be closely attached to the adjusting rod, so as to reliably position the adjusting rod. At this time, the height of the welding torch is fixed, and the rotating sleeve is perpendicular to the ground, so that the first magnet block and the second magnet block are adsorbed to each other, and the position of the adjusting rod will not change. Then, the parts can be spot welded or continuously welded by the welding torch. When welding the parts, move the position of the welding torch to drive the moving rod to slide on the mounting sleeve, which can ensure that the welding positions are on the same straight line. The welding torch can be fixed by the knurled screw. The fixing frame can drive the rotating rod to rotate, and the rotation range of the rotating rod is limited by the positioning block. When vertical welding the parts, the inclination angle of the welding torch is small, which can ensure the welding quality, and the angle of the welding torch can be finely adjusted according to the actual welding situation. When it is necessary to adjust the height of the welding torch during vertical welding, directly rotate the adjusting rod so that the first magnet block and the second magnet block are separated, so that the adjusting rod loses its limit, and the height of the welding torch can be directly adjusted. After adjustment, rotate the adjusting rod to the vertical state to position the adjusting rod;

[0031] Step 2:

[0032] When welding the bottom of the part docking, the movable fixing sleeve fits with the mounting sleeve, and then the rotating seat is rotated half a turn, so that the welding torch rotates under the workbench. During the rotation of the rotating seat, the rotating plate is driven to rotate. When the rotating plate rotates, the spherical part slides in the inclined annular groove. After the rotating plate rotates half a turn, the rotating plate can be pulled to rotate on the rotating seat through the spherical part. When the welding torch rotates under the workbench, the included angle between the welding torch and the part can be reduced, so as to reduce the risk of the molten pool dripping due to gravity during the overhead welding of the part. There is no need for the staff to hold the welding torch all the time. During the overhead welding process, since the moving rod is not perpendicular to the ground, the knurled screw on the positioning sleeve can be loosened to make the welding torch in a movable state. The staff can control the movement of the welding torch and the moving rod together, and can separately adjust the position of the welding torch on the positioning sleeve;

[0033] Step three:

[0034] Before the rotating seat rotates, it is positioned by the positioning pin. When the rotating seat needs to be rotated, the positioning rod can be pulled to stretch the telescopic spring, so that the positioning rod is separated from the positioning groove, so that the positioning pin can lose its limit. Then the positioning pin can be removed, so that the rotating seat loses its limit. The rotating seat can be rotated to adjust the welding position. After the rotating seat rotates, the positioning pin is passed through the two fixing blocks and the positioning hole on the rotating seat. Then the positioning rod is pulled to adjust the position of the positioning pin so that the positioning rod is aligned with the positioning groove. Then the positioning rod is released, and under the action of the telescopic spring, the positioning rod is engaged with the positioning groove, so that the positioning pin is positioned, and the rotating seat is positioned by the positioning pin, thus facilitating the positioning of the rotating seat.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows: The semi-automatic arc welding device and method for automotive parts can ensure that the welding points are on the same straight line when welding parts, improve the welding quality, and can conveniently and quickly adjust the welding height during the welding process, improving the convenience and practicability;

[0036] 1. When welding automotive parts, place the two parts to be fixed on the workbench so that the butt joint is above the welding groove and parallel to it. Then, the operator can move the adjusting rod according to the required welding height, which can change the height of the welding torch. The operator can move the movable rod according to the welding position to adjust the front and rear position of the welding torch. After adjustment, tighten the positioning bolt to position the movable rod. Then, rotate the adjusting rod so that the rotating sleeve rotates on the two fixed rods. After the rotating sleeve rotates, the moving frame rotates. With the rotation of the rotating sleeve, under the action of the cam, the moving frame moves during rotation. Thus, the positioning plate can be driven to move through the movable frame and the mounting block. After the positioning plate moves, the rubber bump can closely fit with the adjusting rod, enabling reliable positioning of the adjusting rod. At this time, the height of the welding torch is fixed, and the rotating sleeve is perpendicular to the ground, so that the first magnet block and the second magnet block are attracted to each other, and the position of the adjusting rod will not change. Then, the parts can be spot-welded or continuously welded with the welding torch. When welding the parts, move the position of the welding torch to drive the moving rod to slide on the mounting sleeve, which can ensure that the welding positions are on the same straight line. The welding torch can be fixed by a knurled screw. The fixing frame can drive the rotating rod to rotate, and the rotation range of the rotating rod is limited by the positioning block. When vertical welding the parts, the inclination angle of the welding torch is small, which can ensure the welding quality, and the angle of the welding torch can be finely adjusted according to the actual welding situation. When the height of the welding torch needs to be adjusted during vertical welding, directly rotate the adjusting rod to separate the first magnet block from the second magnet block, so that the adjusting rod loses its limit, and the height of the welding torch can be directly adjusted. After adjustment, rotate the adjusting rod to a vertical state to position the adjusting rod, so that when welding the parts, the welding points can be ensured to be on the same straight line, improving the welding quality, and the welding height can be adjusted conveniently and quickly during the welding process, enhancing the convenience and practicality;

[0037] 2. When welding the bottom of the part butt joint, move the fixed sleeve to fit with the mounting sleeve, and then rotate the rotating seat half a turn so that the welding torch rotates under the workbench. During the rotation of the rotating seat, the rotating plate is driven to rotate. When the rotating plate rotates, the spherical part slides in the inclined ring groove. After the rotating plate rotates half a turn, the rotating plate can be pulled to rotate on the rotating seat through the spherical part. Thus, when the welding torch rotates under the workbench, the included angle between the welding torch and the part can be reduced, reducing the risk of the molten pool dripping due to gravity during the overhead welding of the part, without the operator holding the welding torch all the time. During the overhead welding process, since the moving rod is not perpendicular to the ground, the knurled screw on the positioning sleeve can be loosened to make the welding torch in an active state. The operator can control the welding torch and the moving rod to move together, and can separately adjust the position of the welding torch on the positioning sleeve, facilitating spot welding and continuous welding of the parts during overhead welding, reducing the working difficulty of the operator during overhead welding, improving the welding efficiency, and enhancing the practicality;

[0038] 3. Before rotation, the rotating seat is positioned by the positioning pin. When it is necessary to rotate the rotating seat, the positioning rod can be pulled to stretch the telescopic spring, so that the positioning rod is disengaged from the positioning groove, the positioning pin can lose its limit, and then the positioning pin can be removed, so that the rotating seat loses its limit and the rotating seat can be rotated to adjust the welding position. After the rotating seat rotates, the positioning pin is passed through the two fixing blocks and the positioning hole on the rotating seat. Then, the positioning rod is pulled to adjust the position of the positioning pin so that the positioning rod is aligned with the positioning groove. Then, the positioning rod is released, and under the action of the telescopic spring, the positioning rod is engaged with the positioning groove, so that the positioning pin is positioned, and the rotating seat is positioned by the positioning pin, thus facilitating the positioning of the rotating seat, facilitating the adjustment of the welding position, and preventing the rotating seat from accidentally rotating after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 is a schematic diagram of the overall structure of another state of the present invention;

[0041] Figure 3 is a schematic diagram of the support assembly structure of the present invention;

[0042] Figure 4 is a schematic diagram of the positioning sleeve structure of the present invention;

[0043] Figure 5 is a schematic diagram of a partial structure of the support assembly of the present invention;

[0044] Figure 6 is a schematic diagram of the cross-sectional structure of the rotating sleeve of the present invention;

[0045] Figure 7 is a schematic diagram of another state of the support assembly of the present invention;

[0046] Figure 8 of the present invention Figure 7 is an enlarged schematic diagram of part A;

[0047] Figure 9 is a schematic diagram of the cross-sectional structure of the rotating plate of the present invention;

[0048] Figure 10 is a schematic diagram of the positioning assembly structure of the present invention.

[0049] In the figure: 1. Workbench; 101. Support leg; 102. Welding groove; 103. Welding torch; 2. Support assembly; 201. Rotating base; 202. Rotating plate; 203. Mounting bracket; 204. Fixed rod; 205. Rotating sleeve; 206. Adjusting rod; 207. Mounting sleeve; 208. Moving rod; 209. Fixed sleeve; 210. Movable rod; 211. Positioning bolt; 212. Support frame; 213. Rotating rod; 214. Fixed frame; 215. Positioning sleeve; 216. Knurled screw; 217. Limiting block; 218. Positioning block; 219. Cam; 220. Positioning plate; 221. Mounting block; 222. Guide rod; 223. Movable frame; 224. Limiting frame; 225. Moving frame; 226. First magnet block; 227. L-shaped frame; 228. Second magnet block; 229. Mounting rod; 230. Fixed seat; 231. Limiting rod; 232. Movable block; 233. Inclined annular groove; 234. Spherical part; 3. Positioning assembly; 301. Fixed block; 302. Positioning pin; 303. Positioning hole; 304. Support block; 305. Positioning rod; 306. Telescopic spring; 307. Positioning groove. Detailed implementation manners

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0051] Please refer to Figures 1 - 10 , the present invention provides a technical solution: a semi-automatic arc welding device for automobile parts, including a workbench 1, support legs 101 symmetrically installed at the bottom of the workbench 1, a welding groove 102 penetrating through the top of the workbench 1, and a welding torch 103 arranged above the welding groove 102;

[0052] It further includes:

[0053] A support assembly 2, arranged on one side and above the workbench 1, and the support assembly 2 includes a rotating base 201;

[0054] The rotating base 201 is rotatably connected to one side of the workbench 1, a rotating plate 202 is hinged to the side of the rotating base 201 away from the workbench 1, mounting brackets 203 are symmetrically installed on one side of the rotating plate 202, fixed rods 204 are fixedly installed on the sides of the two mounting brackets 203 close to each other, a rotating sleeve 205 is rotatably connected between the two fixed rods 204, and an adjusting rod 206 is slidably connected inside the rotating sleeve 205;

[0055] The mounting sleeve 207 is fixedly installed at the top end of the adjusting rod 206. A moving rod 208 is slidably connected inside the mounting sleeve 207. One end of the moving rod 208 is fixedly installed with a fixed sleeve 209. A movable rod 210 is slidably connected inside the fixed sleeve 209. At the same time, a positioning bolt 211 is threadedly connected to the upper part inside the movable rod 210. Moreover, a support frame 212 is symmetrically installed on one side of the top of the movable rod 210;

[0056] A rotating rod 213 is rotatably connected between the two support frames 212. A fixed frame 214 is fixedly installed on the outer part of the rotating rod 213. Moreover, two groups of limiting blocks 217 are symmetrically installed on both sides of the fixed frame 214 on the outer part of the rotating rod 213. At the same time, positioning blocks 218 are symmetrically installed on both sides of the two support frames 212 close to each other and on both sides of the two groups of limiting blocks 217. Moreover, a positioning sleeve 215 is fixedly installed at the top end of the fixed frame 214. A knurled screw 216 is threadedly connected to the upper part inside the positioning sleeve 215;

[0057] On one side of the outer parts of the two fixed rods 204, a cam 219 is fixedly installed. A through groove is formed through one side of the rotating sleeve 205. A positioning plate 220 is arranged inside the through groove. At the same time, a number of rubber bumps are fixedly installed on one side of the positioning plate 220. Moreover, two groups of mounting blocks 221 are symmetrically installed on both sides of the positioning plate 220;

[0058] Guide rods 222 are slidably connected inside the two groups of mounting blocks 221. The guide rods 222 are fixedly connected to the rotating sleeve 205. Moreover, on the side far from each other of the two mounting blocks 221 on each side, a movable frame 223 is fixedly installed. At the same time, a limiting frame 224 is slidably connected to the outer side of the movable frame 223. The limiting frame 224 is fixedly connected to the rotating sleeve 205. And at one end of the two movable frames 223 on each side, a moving frame 225 is fixedly installed. The moving frame 225 is slidably connected to the cam 219;

[0059] On both sides of the rotating sleeve 205 outside the two fixed rods 204, first magnet blocks 226 are symmetrically installed. On both sides of the cam 219, L-shaped frames 227 are symmetrically installed on the two mounting frames 203. Moreover, a second magnet block 228 is fixedly installed on the side of the L-shaped frame 227 close to the first magnet block 226. At the same time, the second magnet block 228 is adsorbed to the first magnet block 226.

[0060] Example 1: As Figures 1 - 7As shown in the figure, when welding automotive parts, place the two parts to be fixed on the workbench 1 so that the butt joint is above the welding groove 102 and parallel to the welding groove 102. Then, the operator can move the adjusting rod 206 according to the required welding height, which can change the height of the welding torch 103. The operator can move the movable rod 210 according to the welding position to adjust the front and rear position of the welding torch 103. After adjustment, tighten the positioning bolt 211 to position the movable rod 210. Then, rotate the adjusting rod 206 so that the rotating sleeve 205 rotates on the two fixed rods 204. After the rotating sleeve 205 rotates, the moving frame 225 rotates. With the rotation of the rotating sleeve 205, under the action of the cam 219, the moving frame 225 moves during rotation. Furthermore, the positioning plate 220 can be driven to move through the movable frame 223 and the mounting block 221. After the positioning plate 220 moves, the rubber bump can closely fit with the adjusting rod 206, so that the adjusting rod 206 can be reliably positioned. At this time, the height of the welding torch 103 is fixed, and the rotating sleeve 205 is perpendicular to the ground, so that the first magnet block 226 and the second magnet block 228 are adsorbed to each other, and the position of the adjusting rod 206 will not change. Then, the parts can be spot welded or continuously welded by the welding torch 103. When welding the parts, move the position of the welding torch 103 to drive the moving rod 208 to slide on the mounting sleeve 207, which can ensure that the welding positions are on the same straight line. The welding torch 103 can be fixed by the knurled screw 216. The fixing frame 214 can drive the rotating rod 213 to rotate, and the rotation range of the rotating rod 213 is limited by the positioning block 218. When performing vertical welding on the parts, the inclination angle of the welding torch 103 is small, which can ensure the welding quality, and the angle of the welding torch 103 can be finely adjusted according to the actual welding situation. When it is necessary to adjust the height of the welding torch 103 during vertical welding, directly rotate the adjusting rod 206 so that the first magnet block 226 and the second magnet block 228 are separated, so that the adjusting rod 206 loses its limit, and the height of the welding torch 103 can be directly adjusted. After adjustment, rotate the adjusting rod 206 to a vertical state to position the adjusting rod 206, so that when welding the parts, the welding points can be ensured to be on the same straight line, improving the welding quality, and the welding height can be conveniently and quickly adjusted during the welding process, improving the convenience and practicality.

[0061] On one side of the workbench 1 above the rotating seat 201, a mounting rod 229 is fixedly installed, and at the end of the mounting rod 229 away from the workbench 1, a fixed seat 230 is fixedly installed. Inside the fixed seat 230, a limiting rod 231 is fixedly installed, and an active block 232 is slidably connected to the outside of the limiting rod 231;

[0062] On one side of the rotating plate 202 close to the rotating seat 201, an inclined annular groove 233 is formed, and a spherical member 234 is slidably connected above the inside of the inclined annular groove 233, and the spherical member 234 is fixedly connected to the movable block 232.

[0063] Embodiment 2: As Figures 3 - 9 shown, when welding the bottom of the part docking, the movable fixing sleeve 209 is fitted with the mounting sleeve 207, and then the rotating seat 201 is rotated half a turn, so that the welding torch 103 is rotated under the workbench 1. During the rotation of the rotating seat 201, the rotating plate 202 is driven to rotate. When the rotating plate 202 rotates, the spherical member 234 slides in the inclined annular groove 233. After the rotating plate 202 rotates half a turn, the rotating plate 202 can be pulled to rotate on the rotating seat 201 through the spherical member 234. Thus, when the welding torch 103 rotates under the workbench 1, the included angle between the welding torch 103 and the part can be reduced, so as to reduce the risk of the molten pool dripping due to gravity during the overhead welding of the part. It is not necessary for the worker to hold the welding torch 103 all the time. Since the moving rod 208 is not perpendicular to the ground during the overhead welding, the knurled screw 216 on the positioning sleeve 215 can be loosened, so that the welding torch 103 is in an active state. The worker can control the welding torch 103 and the moving rod 208 to move together, and can separately adjust the position of the welding torch 103 on the positioning sleeve 215, which is convenient for spot welding and continuous welding of the part during the overhead welding, reduces the working difficulty of the worker during the overhead welding, improves the welding efficiency, and improves the practicability.

[0064] The positioning assembly 3 is arranged on both sides of the rotating seat 201;

[0065] The positioning assembly 3 includes fixed blocks 301 symmetrically arranged on both sides of the rotating seat 201, and both fixed blocks 301 are fixedly connected to the workbench 1. One side of each of the two fixed blocks 301 is provided with a through hole. At the same time, a positioning pin 302 is inserted into the inside of the two fixed blocks 301. One side of the rotating seat 201 is provided with a positioning hole 303, and the positioning pin 302 is adapted to be connected with the positioning hole 303;

[0066] A support block 304 is fixedly installed on one side of one of the fixed blocks 301. A positioning rod 305 is slidably connected inside the support block 304. A positioning groove 307 is formed on the outer side of the positioning pin 302. At the same time, the positioning rod 305 is engaged with the positioning groove 307. A telescopic spring 306 is sleeved on the outer side of the positioning rod 305 on one side of the support block 304, and both ends of the telescopic spring 306 are fixedly connected to the positioning rod 305 and the support block 304 respectively.

[0067] Embodiment 3: As Figures 1 - 3 and Figure 10As shown, before rotation, the rotating seat 201 is positioned by the positioning pin 302. When it is necessary to rotate the rotating seat 201, the positioning rod 305 can be pulled to stretch the telescopic spring 306, so that the positioning rod 305 is disengaged from the positioning groove 307, and the positioning pin 302 can lose its limit. Then, the positioning pin 302 can be removed, and the rotating seat 201 loses its limit, and the rotating seat 201 can be rotated to adjust the welding position. After the rotating seat 201 rotates, the positioning pin 302 is passed through the two fixing blocks 301 and the positioning hole 303 on the rotating seat 201. Then, the positioning rod 305 is pulled to adjust the position of the positioning pin 302 so that the positioning rod 305 is aligned with the positioning groove 307. Then, the positioning rod 305 is released, and under the action of the telescopic spring 306, the positioning rod 305 is engaged with the positioning groove 307, so that the positioning pin 302 is positioned, and the rotating seat 201 is positioned by the positioning pin 302. Thus, it is convenient to position the rotating seat 201, convenient to adjust the welding position, and the rotating seat 201 can be prevented from accidentally rotating after adjustment.

[0068] Working principle: When using this semi-automatic arc welding device for automobile parts, first, according to Figures 1 - 10As shown, when welding automotive parts, place the two parts to be fixed on the workbench 1 so that the butt joint is above the welding groove 102 and parallel to the welding groove 102. Then, the operator can move the adjusting rod 206 according to the required welding height, which can change the height of the welding torch 103. The operator can move the movable rod 210 according to the welding position to adjust the front and rear position of the welding torch 103. After adjustment, tighten the positioning bolt 211 to position the movable rod 210. Then, rotate the adjusting rod 206 so that the rotating sleeve 205 rotates on the two fixed rods 204. After the rotating sleeve 205 rotates, the moving frame 225 rotates. With the rotation of the rotating sleeve 205, under the action of the cam 219, the moving frame 225 moves during rotation. Furthermore, the positioning plate 220 can be driven to move through the movable frame 223 and the mounting block 221. After the positioning plate 220 moves, the rubber bump can be closely attached to the adjusting rod 206, so that the adjusting rod 206 can be reliably positioned. At this time, the height of the welding torch 103 is fixed, and the rotating sleeve 205 is perpendicular to the ground, so that the first magnet block 226 and the second magnet block 228 are adsorbed to each other, and the position of the adjusting rod 206 will not change. Then, the parts can be spot welded or continuously welded by the welding torch 103. When welding the parts, move the position of the welding torch 103 to drive the moving rod 208 to slide on the mounting sleeve 207, which can ensure that the welding positions are on the same straight line. The welding torch 103 can be fixed by the knurled screw 216. The fixing frame 214 can drive the rotating rod 213 to rotate, and the rotation range of the rotating rod 213 is limited by the positioning block 218. When vertical welding the parts, the inclination angle of the welding torch 103 is small, which can ensure the welding quality, and the angle of the welding torch 103 can be finely adjusted according to the actual welding situation. When it is necessary to adjust the height of the welding torch 103 during vertical welding, directly rotate the adjusting rod 206 so that the first magnet block 226 and the second magnet block 228 are separated, so that the adjusting rod 206 loses its limit, and the height of the welding torch 103 can be directly adjusted. After adjustment, rotate the adjusting rod 206 to a vertical state to position the adjusting rod 206;

[0069] When welding the bottom of the part docking, the movable fixing sleeve 209 fits with the mounting sleeve 207. Then, the rotating seat 201 is rotated half a turn, so that the welding torch 103 rotates under the workbench 1. During the rotation of the rotating seat 201, the rotating plate 202 is driven to rotate. When the rotating plate 202 rotates, the spherical part 234 slides in the inclined ring groove 233. After the rotating plate 202 rotates half a turn, the rotating plate 202 can be pulled to rotate on the rotating seat 201 through the spherical part 234. Thus, when the welding torch 103 rotates under the workbench 1, the angle between the welding torch 103 and the part can be reduced, so as to reduce the risk of the molten pool dripping due to gravity during the overhead welding of the part. There is no need for the staff to hold the welding torch 103 all the time. During the overhead welding process, since the moving rod 208 is not perpendicular to the ground, the knurled screw 216 on the positioning sleeve 215 can be loosened, so that the welding torch 103 is in an active state. The staff can control the welding torch 103 and the moving rod 208 to move together, and can separately adjust the position of the welding torch 103 on the positioning sleeve 215. Before the rotating seat 201 rotates, it is positioned by the positioning pin 302. When the rotating seat 201 needs to be rotated, the positioning rod 305 can be pulled to stretch the telescopic spring 306, so that the positioning rod 305 is disengaged from the positioning groove 307, and the positioning pin 302 can lose its limit. Then, the positioning pin 302 can be removed, so that the rotating seat 201 loses its limit, and the rotating seat 201 can be rotated to adjust the welding position. After the rotating seat 201 rotates, the positioning pin 302 is passed through the two fixing blocks 301 and the positioning hole 303 on the rotating seat 201. Then, the positioning rod 305 is pulled to adjust the position of the positioning pin 302 so that the positioning rod 305 is aligned with the positioning groove 307. Then, the positioning rod 305 is released, and under the action of the telescopic spring 306, the positioning rod 305 is engaged with the positioning groove 307, so as to position the positioning pin 302, and the rotating seat 201 is positioned by the positioning pin 302.

[0070] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0071] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semi-automatic arc welding device for automobile parts, comprising a workbench (1), wherein support legs (101) are symmetrically mounted on the bottom of the workbench (1), a welding groove (102) is formed through the top of the workbench (1), and a welding gun (103) is arranged above the welding groove (102); It is characterized in that Also includes: A support assembly (2) is arranged on one side and above the workbench (1), and the support assembly (2) comprises a rotating seat (201); Positioning components (3) are arranged on both sides of the rotating seat (201); A rotating seat (201) is rotatably connected to one side of the workbench (1); a rotating plate (202) is hingedly connected to the side of the rotating seat (201) away from the workbench (1); a mounting frame (203) is symmetrically installed on one side of the rotating plate (202); and a fixing rod (204) is fixedly installed on the two sides of the mounting frames (203) that are close to each other; a rotating sleeve (205) is rotatably connected between the two fixing rods (204); and an adjusting rod (206) is slidably connected inside the rotating sleeve (205); The mounting sleeve (207) is fixedly mounted on the top of the adjusting rod (206); the interior of the mounting sleeve (207) is slidably connected to a moving rod (208); one end of the moving rod (208) is fixedly mounted with a fixing sleeve (209); the interior of the fixing sleeve (209) is slidably connected to a movable rod (210); a positioning bolt (211) is threadedly connected to the upper interior of the movable rod (210); and a support frame (212) is symmetrically mounted on one side of the top of the movable rod (210).

2. A semi-automatic arc welding device for automobile parts according to claim 1, characterized in that: A rotating rod (213) is rotatably connected between the two support frames (212), and a fixed frame (214) is fixedly installed on the outside of the rotating rod (213), and two groups of limit blocks (217) are symmetrically installed on the outside of the rotating rod (213) and located on both sides of the fixed frame (214), and positioning blocks (218) are symmetrically installed on the sides of the two groups of limit blocks (217) on the sides of the two support frames (212) that are close to each other, and on the top of the fixed frame (214), a positioning sleeve (215) is fixedly installed, and a knurled screw (216) is threadedly connected to the upper part of the inner part of the positioning sleeve (215).

3. The semi-automatic arc welding device for automobile parts according to claim 1, characterized in that: A cam (219) is fixedly mounted on one side of the exterior of the two fixed rods (204), and a through slot is penetrated through one side of the rotating sleeve (205), and a positioning plate (220) is arranged inside the through slot, and a plurality of rubber protrusions are fixedly mounted on one side of the positioning plate (220), and two groups of mounting blocks (221) are symmetrically mounted on both sides of the positioning plate (220).

4. A semi-automatic arc welding device for automobile parts according to claim 3, characterized in that: The insides of the two groups of mounting blocks (221) are slidably connected with guide rods (222), and the guide rods (222) are fixedly connected to the rotating sleeve (205), and a movable frame (223) is fixedly installed on the side away from each other of the two mounting blocks (221) on each side, and at the same time, a limiting frame (224) is slidably connected to the outer side of the movable frame (223), and the limiting frame (224) is fixedly connected to the rotating sleeve (205), and a moving frame (225) is fixedly installed on one end of the two movable frames (223) on each side, and the moving frame (225) is slidably connected to the cam (219).

5. The semi-automatic arc welding device for automobile parts according to claim 3, characterized in that: The first magnet blocks (226) are symmetrically installed on both sides of the two fixed rods (204) outside the rotating sleeve (205), and the two mounting frames (203) are symmetrically installed on both sides of the cam (219), and the second magnet block (228) is fixedly installed on one side of the L-shaped frame (227) close to the first magnet block (226), and the second magnet block (228) is adsorbed to the first magnet block (226).

6. The semi-automatic arc welding device for automobile parts according to claim 1, characterized in that: A mounting rod (229) is fixedly mounted on one side of the workbench (1) above the rotating seat (201), and a fixed seat (230) is fixedly mounted on one end of the mounting rod (229) away from the workbench (1), and a limiting rod (231) is fixedly mounted inside the fixed seat (230), and a movable block (232) is slidably connected to the outside of the limiting rod (231).

7. A semi-automatic arc welding device for automobile parts according to claim 6, characterized in that: An inclined annular groove (233) is provided on one side of the rotating plate (202) close to the rotating seat (201), and a spherical member (234) is slidably connected to the upper part of the inclined annular groove (233), and the spherical member (234) is fixedly connected to the movable block (232).

8. The semi-automatic arc welding device for automobile parts according to claim 1, characterized in that: The positioning assembly (3) comprises fixed blocks (301) symmetrically arranged on both sides of the rotating seat (201), and the two fixed blocks (301) are fixedly connected to the workbench (1), and one side of the two fixed blocks (301) is penetrated by a through hole, and the inside of the two fixed blocks (301) is penetrated by a positioning pin (302), and one side of the rotating seat (201) is penetrated by a positioning hole (303), and the positioning pin (302) is adaptively connected to the positioning hole (303).

9. The semi-automatic arc welding device for automobile parts according to claim 8, characterized in that: A support block (304) is fixedly installed on one side of the fixed block (301), and a positioning rod (305) is slidably connected inside the support block (304), and a positioning groove (307) is opened on the outer side of the positioning pin (302), and the positioning rod (305) is engaged with the positioning groove (307), and a telescopic spring (306) is sleeved on the outer side of the positioning rod (305) located on one side of the support block (304), and the two ends of the telescopic spring (306) are respectively fixedly connected to the positioning rod (305) and the support block (304).

10. A semi-automatic arc welding method for automobile parts, using the semi-automatic arc welding device for automobile parts as claimed in claim 8, characterized in that: The specific steps are as follows: Step 1: When welding automobile parts, two parts to be fixed are placed on a workbench (1) so that the butt joint is located above the welding groove (102) and parallel to the welding groove (102). Then, the worker can move the adjustment rod (206) according to the required welding height, so that the height of the welding gun (103) can be changed. The movable rod (210) can be moved according to the welding position, so that the front and rear positions of the welding gun (103) can be adjusted. After the adjustment, the positioning bolt (211) can be tightened to position the movable rod (210). Then, the adjustment rod (206) can be rotated so that the rotating sleeve (206) can be rotated. 5) rotating on the two fixed rods (204), the movable frame (225) rotates after the rotating sleeve (205) rotates, and as the rotating sleeve (205) rotates, the movable frame (225) moves during the rotation process under the action of the cam (219), and then the positioning plate (220) can be driven to move through the movable frame (223) and the mounting block (221), so that after the positioning plate (220) moves, the rubber protrusion can fit tightly with the adjustment rod (206), so that the adjustment rod (206) can be reliably positioned, and at this time the height of the welding gun (103) is fixed, and the rotating sleeve (205) is vertically The first magnet block (226) and the second magnet block (228) are placed on the ground so that the first magnet block (226) and the second magnet block (228) are attracted to each other, and the position of the adjusting rod (206) does not change. Then, the parts can be spot welded or continuously welded by the welding gun (103). When welding the parts, the position of the moving welding gun (103) drives the moving rod (208) to slide on the mounting sleeve (207), which can ensure that the welding positions are on the same straight line. The welding gun (103) can be fixed by a knurled screw (216), and the fixing frame (214) can drive the rotating rod (213) to rotate, and the rotation range of the rotating rod (213) is limited by the positioning The restriction of the block (218) makes it possible for the welding gun (103) to have a small inclination angle when performing vertical welding on parts, thereby ensuring the quality of welding, and the angle of the welding gun (103) can be fine-tuned according to the actual welding situation. When the height of the welding gun (103) needs to be adjusted during the vertical welding process, the adjusting rod (206) can be directly rotated to disengage the first magnet block (226) from the second magnet block (228), so that the adjusting rod (206) loses its limit, and the height of the welding gun (103) can be directly adjusted. After the adjustment, the adjusting rod (206) can be rotated to a vertical state, and the adjusting rod (206) can be positioned; Step 2: When welding the bottom of the parts, the movable fixing sleeve (209) is fitted with the mounting sleeve (207), and then the rotating seat (201) is rotated half a circle, so that the welding gun (103) is rotated to the bottom of the workbench (1). The rotating seat (201) drives the rotating plate (202) to rotate during the rotation process. When the rotating plate (202) rotates, the spherical member (234) slides in the inclined annular groove (233). After the rotating plate (202) rotates half a circle, the spherical member (234) can pull the rotating plate (202) to rotate on the rotating seat (201), and then the welding gun (103) is rotated to the working table (1). When the welding gun (103) is below the platform (1), the angle between the welding gun (103) and the part can be reduced, so that the risk of the molten pool dripping due to gravity when the welding gun (103) is welding on the part is reduced during overhead welding, and the staff does not need to hold the welding gun (103) all the time. During the overhead welding process, since the moving rod (208) is not perpendicular to the ground, the knurled screw (216) on the positioning sleeve (215) can be loosened to make the welding gun (103) active. The staff can control the welding gun (103) to move together with the moving rod (208), and can adjust the position of the welding gun (103) on the positioning sleeve (215) separately; Step 3: The rotating seat (201) is positioned by the positioning pin (302) before it is rotated. When the rotating seat (201) needs to be rotated, the positioning rod (305) can be pulled and the telescopic spring (306) can be stretched, so that the positioning rod (305) is separated from the positioning groove (307), so that the positioning pin (302) can lose the limit, and then the positioning pin (302) can be removed, so that the rotating seat (201) loses the limit, and the rotating seat (201) can be rotated to adjust the welding position. After the rotating seat (201) is rotated, the positioning pin (302) is passed through The two fixing blocks (301) are aligned with the positioning holes (303) on the rotating seat (201), and then the positioning rod (305) is pulled to adjust the position of the positioning pin (302) so that the positioning rod (305) is aligned with the positioning groove (307), and then the positioning rod (305) is loosened, and the positioning rod (305) is engaged with the positioning groove (307) under the action of the telescopic spring (306), so that the positioning pin (302) is positioned, and the rotating seat (201) is positioned through the positioning pin (302), thereby facilitating the positioning of the rotating seat (201).

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