CN118720626A - Automobile parts welding device - Google Patents

Abstract

The invention discloses an automobile parts welding device, which belongs to the technical field of automobile parts processing, and comprises a bottom plate, a clamping assembly for clamping and fixing automobile parts is slidably connected to the top of the bottom plate, an electric welding clamp for welding automobile parts is slidably connected to the side end of the clamping assembly, and two groups of automobile parts are welded together by welding rods clamped inside the electric welding clamp; the invention arranges two groups of strip grooves, and the two groups of strip grooves are connected by connecting pipes, so that the water levels inside the two groups of strip grooves are the same, and after the two groups of floating blocks move down to the water surface, the two groups of supporting blocks follow the floating blocks and stay at corresponding heights, so that when the clamping assembly clamps the automobile parts, the axis center points of the two groups of cylindrical automobile parts are at the same height, thereby ensuring the accuracy and quality during welding, and avoiding the cylindrical automobile parts from having gaps in the formed workpieces due to the axis center point offset, which affects the appearance.

Description

Automobile parts welding device

Technical Field

The invention relates to the field of automobile parts processing, in particular to an automobile parts welding device.

Background Art

Auto parts are interrelated and interdependent. Together, they form the whole of the car and ensure that the car can run normally and safely. At the same time, with the continuous development of automobile technology, the types and functions of auto parts are also constantly updated and improved to meet people's higher requirements for automobile performance, safety, comfort and other aspects.

After massive searches, it was found that the prior art publication number is CN210499081U, which discloses an automobile parts welding device, including a support plate, an electric welding machine is arranged on the lower surface of the support plate, a first limiting slide rail is arranged on the upper surface of the support plate, and a fixing mechanism is arranged above the support plate, the fixing mechanism includes a first limiting slide seat, and limiting slide grooves corresponding to the first limiting slide rail are arranged at both ends of the lower surface of the first limiting slide seat, and second limiting slide seats are arranged at both ends of the upper surface of the first limiting slide seat, and a second limiting slide rail corresponding to the second limiting slide seat is arranged on the first limiting slide; when in use, the utility model can adjust the position of the fixing plate according to the size of the automobile exhaust pipe, so that the fixing plate has a better fixing effect on the automobile exhaust pipe, thereby facilitating the user to weld the automobile exhaust pipe, thereby enhancing the user's experience of using the welding device.

Therefore, based on the above search and in combination with the existing ones, after the above device fixes the auto parts, the staff needs to manually adjust and compare whether the two sets of auto parts match each other. However, due to the differences seen at different angles, there is instability in the manual comparison and adjustment using the naked eye, resulting in the two sets of auto parts being welded without being fully aligned. In this case, the welding points may be offset or incompletely fused, resulting in substandard welding quality and reduced strength and durability of the joints. In addition, due to the misalignment of the auto parts, the appearance of the welded auto parts may be uneven, with obvious gaps affecting the appearance.

Summary of the invention

The object of the present invention is to provide an automobile parts welding device to solve the problems raised in the above background technology.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising a bottom plate, a clamping assembly for clamping and fixing automobile parts is slidably connected to the top of the bottom plate, an electric welding clamp for welding automobile parts is slidably connected to the side end of the clamping assembly, and two groups of automobile parts are welded together by welding rods clamped inside the electric welding clamp, an adjusting assembly for helping the two groups of clamping assemblies to be adjusted to a horizontal state is rotatably connected to the top of the inner cavity of the bottom plate, the adjusting assembly includes a rotatably connected limiting assembly, and the limiting assembly is used to limit the adjusting assembly;

The adjustment component includes two groups of floats, both of which are slidably connected to the inner cavity of the base plate. A magnetic block for attracting the clamping component is fixedly installed in the inner cavity of the float. A strip groove for sliding of the float is provided inside the base plate, and the two groups of floats are adjusted to a horizontal state by water stored in the strip groove. The placement positions of the clamping assembly and the floats correspond to each other, so that the two groups of clamping assemblies drive the axis points of the automobile parts clamped inside to be adjusted to the same horizontal line according to the floats.

Furthermore, the top of the bottom plate is rotatably connected to an axle rod for pulling the floating block up and down, the outer wall of the axle rod is fixedly wrapped with a pull rope for pulling the floating block up and down, the outer wall of the pull rope is sleeved with a soft plate for reducing the entry of particles into the strip groove, and the evaporation rate of water inside the strip groove is slowed down by the soft plate.

Furthermore, the limiting assembly includes gear one, one end of which is fixedly connected to the shaft rod, the outer wall of gear one is rotatably connected to a cylindrical sleeve rod for limiting gear one, the cylindrical sleeve rod is fixedly connected to a support block one for supporting it, a plurality of sets of tooth blocks are fixedly connected inside the cylindrical sleeve rod, and when gear one is moved up and meshed with the tooth blocks through the tooth blocks, the shaft rod is limited by a pair of gears so that the shaft rod cannot rotate.

Furthermore, one end of the gear 1 close to the cylindrical sleeve rod is fixedly connected to a connecting rod for driving the gear 1 to rotate, and the bottom of the connecting rod is rotatably connected to a push plate for pushing the connecting rod to move upward.

Furthermore, a cylinder for pushing the welding clamp to move up and down is fixedly connected to the bottom of the welding clamp, and a threaded shaft for driving the welding clamp to move left and right is threadedly connected to the bottom of the cylinder.

Furthermore, the clamping assembly includes a support block 1, which is slidably connected to the top of the inner cavity of the base plate, and a push block is slidably connected inside the support block 1, and one end of the push block away from the support block 1 is fixedly connected to a clamping rod for clamping automobile parts, and one end of the push block away from the clamping rod is fixedly connected to a rotating gear for pushing the push block to move.

Furthermore, one end of the support block 1 is fixedly and slidably connected to the support block 2, a hydraulic rod for pushing the support block 1 to move is fixedly connected between the support blocks 1 and 2, and a threaded column for driving the support block 2 to move up and down is internally threadedly connected to the support block 2.

Furthermore, one end of the support block 2 away from the support block 1 is fixedly connected to the contact block, and one end of the contact block away from the support block 2 is slidably connected to the magnetic block 2, and the positions of the magnetic block 2 and the magnetic block 1 correspond.

Furthermore, a plurality of groups of strip blocks are fixedly connected to the inner cavity of the bottom plate, a box for storing sand is slidably connected to the bottom of the strip blocks, and a handle for pulling the box to move is fixedly connected to one end of the box away from the bottom plate.

Beneficial Effects

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention sets two groups of strip grooves, and the two groups of strip grooves are connected by connecting pipes, so that the water levels inside the two groups of strip grooves are the same. After the two groups of floating blocks move down to the water surface, the two groups of support blocks follow the floating blocks and stay at the corresponding heights. When the clamping assembly clamps the automobile parts, the axis points of the two groups of cylindrical automobile parts are at the same height, thereby ensuring the accuracy and quality during welding and avoiding the occurrence of gaps in the formed workpiece due to the offset of the axis point of the cylindrical automobile parts, which affects the appearance.

2. The present invention provides twelve groups of clamping rods, so that when the clamping rods drive the rubber columns to fix the cylindrical automobile parts, the outer wall of the cylindrical automobile parts is uniformly clamped, thereby avoiding the cylindrical automobile parts from being offset during the welding process due to the smooth outer wall of the cylindrical automobile parts having no gripping points, thereby affecting the welding product.

3. The present invention sets up a box and stores sand inside the box. When welding slag appears during welding, the welding slag can pass through the gap between the strip blocks and fall into the inner cavity of the box, so that the sand inside the box wraps the welding slag for easy removal, thereby preventing the welding slag from falling into the equipment, which makes it difficult to remove the welding slag after it cools down.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a cross-sectional view of the structure of the bottom plate of the present invention;

FIG3 is a cross-sectional view of the structure of a support block 1 of the present invention;

FIG4 is a schematic structural diagram of a cylindrical sleeve rod according to the present invention;

FIG5 is a schematic structural diagram of a rotating gear according to the present invention;

FIG6 is a schematic structural diagram of a threaded column according to the present invention;

FIG7 is a cross-sectional view of the structure of the support block 2 of the present invention;

FIG8 is a structural cross-sectional view of the box body of the present invention.

In the figure: 1, bottom plate; 2, clamping assembly; 3, welding clamp; 4, adjustment assembly; 5, limit assembly; 6, strip block; 201, support block 1; 202, push block; 203, clamp rod; 204, rubber column; 205, rotating gear; 206, motor 1; 207, arc groove; 208, push rod; 209, support block 2; 210, hydraulic rod; 211, threaded column; 212, motor 2; 213, limit rod; 214, contact block; 215, magnetic block 2; 216, block groove; 217, spring 2; 218, ear block; 301, air Cylinder; 302, threaded shaft; 303, square groove; 401, floating block; 402, strip groove; 403, connecting pipe; 404, shaft; 405, pull rope; 406, magnetic block 1; 407, extension block; 408, water tank; 409, soft board; 501, gear 1; 502, cylindrical sleeve rod; 503, gear block; 504, support block 1; 505, support block 2; 506, connecting rod; 507, push plate; 508, rotating plate; 509, spring 1; 510, oval groove; 601, box body; 602, handle; 603, through groove.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1: Please refer to Figures 1 to 8. A welding device for automobile parts comprises a bottom plate 1. A clamping assembly 2 for clamping and fixing automobile parts is slidably connected to the top of the bottom plate 1. An electric welding clamp 3 for welding automobile parts is slidably connected to the side end of the clamping assembly 2. Two groups of automobile parts are welded together by welding rods clamped inside the electric welding clamp 3. An adjusting assembly 4 for helping the two groups of clamping assemblies 2 to be adjusted to a horizontal state is rotatably connected to the top of the inner cavity of the bottom plate 1. The adjusting assembly 4 comprises a rotatably connected limiting assembly 5. The limiting assembly 5 limits the adjusting assembly 4 to prevent the adjusting assembly 4 from loosening during use.

The adjusting component 4 includes two groups of floating blocks 401, and the two groups of floating blocks 401 are both slidably connected to the inner cavity of the bottom plate 1. A magnetic block 406 for attracting the clamping component 2 is fixedly installed in the inner cavity of the floating block 401. A strip groove 402 for sliding of the floating block 401 is provided inside the bottom plate 1, and the two groups of floating blocks 401 are adjusted to a horizontal state by the water stored in the strip groove 402. The placement positions of the clamping component 2 and the floating block 401 correspond to each other, so that the two groups of clamping components 2 drive the axis points of the automobile parts clamped inside to be adjusted to the same horizontal line according to the floating block 401. Specifically, the two groups of strip grooves 402 opened in the inner cavity of the bottom plate 1 are connected by a connecting pipe 403, so that the horizontal lines inside the two groups of strip grooves 402 have the same height; a water tank 408 for storing water is fixedly installed on the outer wall of the bottom plate 1, and the connecting pipe 403 passes through the bottom plate 1 and is fixedly connected to the water tank 408 through a booster pump.

Please refer to Figure 2. The top of the bottom plate 1 is rotatably connected to an axis rod 404 for pulling the float 401 up and down. The outer wall of the axis rod 404 is fixedly wrapped with a pull rope 405 for pulling the float 401 up and down. The outer wall of the pull rope 405 is sleeved with a soft plate 409 for reducing the entry of particulate matter into the strip groove 402, and the soft plate 409 is used to slow down the evaporation rate of water inside the strip groove 402. Specifically, the top of the bottom plate 1 is fixedly connected to an extension block 407, and the extension block 407 is rotatably connected to the middle part of the outer wall of the axis rod 404, so that when the axis rod 404 rotates in the inner cavity of the extension block 407, the pull rope 405 is pulled to drive the float 401 to rise and reset, or the pull rope 405 is relaxed, so that the float 401 uses its own weight to pull the end of the pull rope 405 downward.

Please refer to Figures 3-4. The limiting component 5 includes a gear 501, one end of which is fixedly connected to the shaft 404. The outer wall of the gear 501 is rotatably connected to a cylindrical sleeve rod 502 for limiting the gear 501. The outside of the cylindrical sleeve rod 502 is fixedly connected to a support block 504 for supporting it. The inside of the cylindrical sleeve rod 502 is fixedly connected to multiple groups of tooth blocks 503, and when the gear 501 is moved up and meshed with the tooth blocks 503, the shaft 404 is limited by the gear 501, so that the shaft 404 cannot rotate. Specifically, there are multiple groups of tooth blocks 503 and the array is symmetrically arranged around the cylindrical sleeve rod 502 and fixedly connected to the inner cavity of the cylindrical sleeve rod 502. The end of the shaft 404 away from the support block 504 is rotatably connected to the support block 2 505 through a bearing, and the bottoms of the support block 1 504 and the support block 2 505 are fixedly connected to the top of the base plate 1.

One end of the gear 501 close to the cylindrical sleeve rod 502 is fixedly connected to a connecting rod 506 for driving the gear 501 to rotate, and the bottom of the connecting rod 506 is rotatably connected to a push plate 507 for pushing the connecting rod 506 to move upward. Specifically, the end of the connecting rod 506 away from the gear 501 passes through the support block 504 and is fixedly connected to a rotating plate 508 for driving the connecting rod 506 to rotate, and the rotating plate 508 is rotated to drive the connecting rod 506 and the gear 501 to rotate. When the gear 501 drives the shaft 404 to rotate, the cylindrical sleeve rod 502 An elliptical groove 510 is provided inside for providing the connecting rod 506 with the ability to slide up and down; a spring 509 is fixedly connected to the bottom of the push plate 507 for pushing the push plate 507 upward, so that when the float 401 contacts the water surface, the connecting rod 506 loses the gravity of the float 401, causing the spring 509 to push the push plate 507 upward, causing the gear 501 to mesh with the tooth block 503 inside the cylindrical sleeve rod 502, thereby limiting the position of the gear 501 and preventing the shaft 404 from rotating, thereby preventing the pull rope 405 from loosening and causing the float 401 to shake.

Embodiment 2: Please refer to Figure 1. A welding device for automobile parts is different from Embodiment 1 in that a cylinder 301 for pushing the welding clamp 3 to move up and down is fixedly connected to the bottom of the welding clamp 3, and a threaded shaft 302 for driving the welding clamp 3 to move left and right is threadedly connected to the bottom of the cylinder 301. Specifically, a square groove 303 is opened in the inner cavity of the bottom plate 1, and both ends of the threaded shaft 302 are rotatably connected to the inner cavity of the square groove 303 through bearings. A motor for driving the threaded shaft 302 to rotate is fixedly installed in the inner cavity of the bottom plate 1, so that by driving the motor, the motor output shaft drives the threaded shaft 302 to rotate, so that the threaded shaft 302 drives the welding clamp 3 to move left and right, and the driving cylinder 301 pushes the welding clamp 3 to move up and down, thereby driving the welding clamp 3 to move, and the welding rod clamped inside the welding clamp 3 is used to weld automobile parts.

Please refer to FIG5 , the clamping assembly 2 includes a support block 201, the support block 201 is slidably connected to the top of the inner cavity of the bottom plate 1, a push block 202 is slidably connected inside the support block 201, the end of the push block 202 away from the support block 201 is fixedly connected to a clamping rod 203 for clamping automobile parts, the end of the push block 202 away from the clamping rod 203 is fixedly connected to a rotating gear 205 for pushing the push block 202 to move, specifically, the end of the rotating gear 205 away from the push block 202 is fixedly connected to a motor 206 for driving the rotating gear 205 to rotate, the outer wall of the motor 206 is fixedly connected to the inner cavity of the support block 201, and the inner cavity of the rotating gear 205 is provided with an arc groove 207 The inner cavity of the arc groove 207 is slidably connected with a push rod 208 for pushing the push block 202 to move, and the end of the push rod 208 away from the push block 202 is fixedly connected to the push block 202, so that when the motor 206 is working, its output shaft drives the rotating gear 205 to rotate, and uses the arc groove 207 inside the rotating gear 205 to push the push rod 208 to drive the push block 202 to drive the clamping rod 203 to move, so that the clamping rod 203 clamps and fixes the outer wall of the automobile part; the outer wall of the clamping rod 203 is fixedly connected with a rubber column 204 for increasing friction, and when the clamping rod 203 clamps the automobile part through the rubber column 204, the grip of the rubber column 204 itself is used to increase the stability of the automobile part.

Please refer to Figures 5-6. One end of the support block 1 201 is connected to the support block 209. A hydraulic rod 210 is fixedly connected between the support block 1 201 and the support block 209 for pushing the support block 1 201 to move. The support block 209 is internally threaded with a threaded column 211 for driving the support block 209 to move up and down. The bottom of the threaded column 211 is fixedly connected to a motor 212. When the motor 212 rotates, the output shaft of the motor 212 drives the threaded column 211 to rotate, so that the threaded column 211 drives the support block 209 to move up and down. The support block 209 is internally slidably connected with a limit rod 213. The bottom of the limit rod 213 is fixedly connected to the top of the inner cavity of the bottom plate 1, and the top of the limit rod 213 is fixedly connected to the bottom of the extension block 407, so that the limit rod 213 limits the support block 209 when the support block 209 moves up and down.

Please refer to Figures 6 and 7. The end of the second support block 209 away from the first support block 201 is fixedly connected to the contact block 214. The end of the contact block 214 away from the second support block 209 is slidably connected to the second magnetic block 215. The position of the second magnetic block 215 corresponds to that of the first magnetic block 406. Specifically, when the second support block 209 drives the second magnetic block 215 to move to the same height as the first magnetic block 406, the first magnetic block 406 will attract the second magnetic block 215, so that the second magnetic block 215 moves toward the end of the first magnetic block 406, so that the second magnetic block 215 and the contact block 215 are connected. When separated, the contact block 214 can turn off the second motor 212 through the wireless module, so that the second support block 209 stays at the height, so that the axis points of the two groups of columnar automobile parts stay at the same horizontal line; the second support block 209 is provided with a block groove 216, and the second spring 217 is fixedly connected inside the block groove 216. One end of the second spring 217 is fixedly connected to an ear block 218. There are two groups of ear blocks 218, which are respectively fixedly connected to the two ends of the outer wall of the second magnetic block 215, so that the second spring 217 pushes the ear block 218 to drive the second magnetic block 215 to reset.

Embodiment 3: Please refer to Figure 8. A welding device for automobile parts is different from Embodiment 1 in that a plurality of groups of strip blocks 6 are fixedly connected to the inner cavity of the bottom plate 1, and a box 601 for storing sand is slidably connected to the bottom of the strip blocks 6. A handle 602 for pulling the box 601 to move is fixedly connected to the end of the box 601 away from the bottom plate 1. Specifically, a through groove 603 is provided in the inner cavity of the bottom plate 1, and a plurality of groups of strip blocks 6 are arranged and fixedly connected horizontally in the inner cavity of the through groove 603. A slide groove for providing sliding of the box 601 is provided in the inner cavity of the bottom plate 1, and the box 601 is slidably connected in the inner cavity of the slide groove; the strip blocks 6 are in the shape of a pointed top and a flat bottom, so when the welding slag falls on the top of the strip blocks 6, it can slide downward following its shape, so that during the welding process, when welding slag appears, the welding slag can pass through the gap between the strip blocks 6 and the strip blocks 6 and fall into the inner cavity of the box 601, so that the sand inside the box 601 wraps the welding slag, thereby preventing the welding slag from adhering to the top of the equipment and being difficult to remove.

The working principle of the present invention is as follows: first, the booster pump is driven according to the size of the automobile parts, so that the water in the inner cavity of the water tank 408 enters the inner cavity of the two groups of strip grooves 402 through the connecting pipe 403. When the automobile parts are large, a large amount of water can be injected, and vice versa, a small amount of water can be injected, so that the connecting rod 506 drives the shaft rod 404 to rotate by rotating the rotating plate 508, and the pull rope 405 is loosened to move the floating block 401 down to the horizontal plane. When the floating block 401 contacts the water surface, the buoyancy of the water is used to move the floating block 401 is lifted up, so that the connecting rod 506 loses the gravity of the floating block 401, and the spring 1 509 pushes the push plate 507 to move up, so that the gear 1 501 is meshed and connected with the tooth block 503 inside the cylindrical sleeve rod 502, thereby limiting the position of the gear 1 501, so that the shaft 404 cannot rotate, thereby positioning the position height of the two groups of floating blocks 401, and driving the two groups of motors 212 at the same time. When the threaded column 211 rotates, the support block 209 is driven to move downward. When the magnetic block 215 inside the support block 209 is When the magnetic block 1 406 moves to the same height as the magnetic block 1 406, the magnetic block 1 406 will attract the magnetic block 2 215, so that the magnetic block 215 moves toward the end of the magnetic block 1 406. When the magnetic block 215 is separated from the contact block 214, the contact block 214 can turn off the motor 212 through the wireless module, so that the support block 209 stays at this height, and drives the hydraulic rod 210 to make the two groups of support blocks 1 201 approach the end of the automobile parts, and drive the motor 1 206, so that its output shaft drives the rotating gear 205 to rotate. , and use the arc groove 207 inside the rotating gear 205 to push the push rod 208 to drive the push block 202 to drive the clamping rod 203 to move, so that the clamping rod 203 clamps and fixes the outer wall of the automobile part through the rubber column 204, so that the electric welding clamp 3 welds the connection between the two groups of automobile parts. During the welding process, when welding slag appears, the welding slag can pass through the gap between the strip blocks 6 and the strip blocks 6 and fall into the inner cavity of the box 601, so that the sand inside the box 601 wraps the welding slag, so as to facilitate the removal of the welding slag.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims (9)

1. An automobile parts welding device, comprising a base plate (1), characterized in that: a clamping assembly (2) for clamping and fixing automobile parts is slidably connected to the top of the base plate (1), an electric welding clamp (3) for welding automobile parts is slidably connected to the side end of the clamping assembly (2), and two groups of automobile parts are welded together by welding rods clamped inside the electric welding clamp (3), and an adjusting assembly (4) for helping the two groups of clamping assemblies (2) to adjust to a horizontal state is rotatably connected to the top of the inner cavity of the base plate (1), and the adjusting assembly (4) includes a rotatably connected limiting assembly (5), and the limiting assembly (5) is used to limit the adjusting assembly (4); The adjusting component (4) comprises two groups of floating blocks (401), both of which are slidably connected to the inner cavity of the bottom plate (1), and a magnetic block (406) for attracting the clamping component (2) is fixedly installed in the inner cavity of the floating block (401). A strip groove (402) for sliding the floating blocks (401) is provided inside the bottom plate (1), and the two groups of floating blocks (401) are adjusted to a horizontal state by water stored inside the strip groove (402). The placement positions of the clamping component (2) and the floating blocks (401) correspond to each other, so that the two groups of clamping components (2) drive the axis points of the automobile parts clamped inside to be adjusted to the same horizontal line according to the floating blocks (401). 2. An automobile parts welding device according to claim 1, characterized in that: the top of the base plate (1) is rotatably connected to a shaft rod (404) for pulling the floating block (401) up and down, and the outer wall of the shaft rod (404) is fixedly wrapped with a pull rope (405) for pulling the floating block (401) up and down, and the outer wall of the pull rope (405) is sleeved with a soft plate (409) for reducing the entry of particulate matter into the strip groove (402), and the evaporation rate of water inside the strip groove (402) is slowed down by the soft plate (409). 3. An automobile parts welding device according to claim 2, characterized in that: the limiting assembly (5) includes a gear 1 (501), one end of the gear 1 (501) is fixedly connected to the shaft (404), the outer wall of the gear 1 (501) is rotatably connected to a cylindrical sleeve rod (502) for limiting the gear 1 (501), the cylindrical sleeve rod (502) is fixedly connected to a support block 1 (504) for supporting it, and the cylindrical sleeve rod (502) is fixedly connected to a plurality of groups of tooth blocks (503) inside, and when the gear 1 (501) is moved up and meshed with the tooth blocks (503), the shaft (404) is limited by the gear 1 (501), so that the shaft (404) cannot rotate. 4. An automobile parts welding device according to claim 3, characterized in that: one end of the gear 1 (501) close to the cylindrical sleeve rod (502) is fixedly connected to a connecting rod (506) for driving the gear 1 (501) to rotate, and the bottom of the connecting rod (506) is rotatably connected to a push plate (507) for pushing the connecting rod (506) upward. 5. An automobile parts welding device according to claim 1, characterized in that: a cylinder (301) for pushing the welding clamp (3) to move up and down is fixedly connected to the bottom of the welding clamp (3), and a threaded shaft (302) for driving the welding clamp (3) to move left and right is threadedly connected to the bottom of the cylinder (301). 6. An automobile parts welding device according to claim 5, characterized in that: the clamping assembly (2) includes a support block (201), the support block (201) is slidably connected to the top of the inner cavity of the base plate (1), a push block (202) is slidably connected inside the support block (201), the end of the push block (202) away from the support block (201) is fixedly connected to a clamping rod (203) for clamping automobile parts, and the end of the push block (202) away from the clamping rod (203) is fixedly connected to a rotating gear (205) for pushing the push block (202) to move. 7. An automobile parts welding device according to claim 6, characterized in that: one end of the support block 1 (201) is fixedly and slidably connected to the support block 2 (209), a hydraulic rod (210) is fixedly connected between the support block 1 (201) and the support block 2 (209) for pushing the support block 1 (201) to move, and the support block 2 (209) is internally threadedly connected to a threaded column (211) for driving the support block 2 (209) to move up and down. 8. An automobile parts welding device according to claim 7, characterized in that: the end of the second support block (209) away from the first support block (201) is fixedly connected to the contact block (214), and the end of the contact block (214) away from the second support block (209) is slidably connected to the second magnetic block (215), and the position of the second magnetic block (215) corresponds to that of the first magnetic block (406). 9. An automobile parts welding device according to claim 1, characterized in that: a plurality of groups of strip blocks (6) are fixedly connected to the inner cavity of the base plate (1), a box (601) for storing sand is slidably connected to the bottom of the strip blocks (6), and a handle (602) for pulling the box (601) to move is fixedly connected to one end of the box (601) away from the base plate (1).