Auxiliary welding device for automobile metal parts

Abstract

The invention relates to the technical field of welding assistance, and discloses an automobile metal part welding assisting device which comprises a base, a supporting plate is fixedly connected to the top of the base, a reciprocating lead screw is rotatably connected to the inner wall of the supporting plate, a moving plate is movably connected to the circumferential face of the reciprocating lead screw, and a limiting column is fixedly connected to the inner wall of the supporting plate. And the inner wall of the moving plate is fixedly connected with an L-shaped block, and the right side of the L-shaped block is fixedly connected with an elastic telescopic rod I. The stability of the device in the clamping process of large automobile metal parts can be improved, the clamping and fixing efficiency of the device on the automobile metal parts is improved, and in the moving process of a moving column, the clamping and fixing efficiency of the device on the automobile metal parts is improved. According to the device, the automobile metal part can be centered and positioned before being clamped and fixed, the subsequent welding efficiency of the device can be improved, parts of different sizes can be clamped through a mechanical means, numerical control clamping parameters do not need to be frequently modified, and the production efficiency of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of welding auxiliary technology, specifically to a welding auxiliary device for automotive metal parts. Background Technology

[0002] When welding automotive metal parts, the diverse sizes and complex shapes of the workpieces necessitate auxiliary devices for precise positioning and stable clamping to ensure welding quality. Traditional auxiliary devices suffer from poor versatility and inconvenient adjustment. Tooling customized for specific workpieces has limited adaptability, requiring redesign during model changes, increasing costs and time. Manually adjustable positioning mechanisms have low precision and are prone to welding deformation and weld misalignment due to unstable clamping. As automotive manufacturing moves towards lightweighting and high precision, the requirements for automation and flexibility in auxiliary devices are increasing. Servo drives, sensor detection, and other technologies are needed to achieve rapid model changes, precise positioning, and adaptive clamping, meeting the needs of multi-variety, small-batch production, reducing reliance on manual labor, and improving welding efficiency and consistency.

[0003] Patent CN218695574U discloses a welding auxiliary device for automotive parts, relating to the field of automotive parts technology. It includes a rectangular plate with an L-shaped column fixed to its top and a U-shaped column fixed to its top. Two connecting rods are rotatably connected inside the U-shaped column, and a gear is fixedly sleeved on the outer surface of one of the connecting rods. This patent, through the cooperation of the U-shaped column, connecting rods, gear, rotating plate, concave block, stepper motor, first connecting block, threaded rod, and driver, can drive automotive parts fixed on a fixed mechanism to rotate at accurate angles. This ensures that the angle of fixed automotive parts requiring angle adjustment can be adjusted, effectively improving the efficiency of the welding auxiliary device while ensuring the stability of two parts when welded together, thus guaranteeing the welding quality of the manufactured automotive parts.

[0004] However, when using the above-mentioned device to clamp automotive parts of different sizes, it is necessary to adjust the data parameters of the clamping operation multiple times to meet the different clamping requirements of the parts. This can easily lead to a decrease in the welding clamping efficiency of automotive metal parts and affect the subsequent welding speed. Therefore, an auxiliary device for welding automotive metal parts is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a welding auxiliary device for automotive metal parts, which addresses the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a welding auxiliary device for automotive metal parts, including a base, a support plate fixedly connected to the top of the base, a reciprocating screw rotatably connected to the inner wall of the support plate, a movable plate movably connected to the circumferential surface of the reciprocating screw, a limit post fixedly connected to the inner wall of the support plate, an L-shaped block fixedly connected to the inner wall of the movable plate, an elastic telescopic rod I fixedly connected to the right side of the L-shaped block, a clamping plate fixedly connected to the telescopic end of the elastic telescopic rod I, a stabilizing post fixedly connected to the inner wall of the L-shaped block, a placement plate rotatably connected to the inner wall of the support plate, an isolation ring fixedly connected to the top of the placement plate, a gear fixedly connected to the bottom of the placement plate, a rack fixedly connected to the inner wall of the movable plate, a stop plate fixedly connected to the top of the movable plate, an elastic telescopic rod II fixedly connected to the circumferential surface of the isolation ring, a roller block fixedly connected to the telescopic end of the elastic telescopic rod II, a movable post fixedly connected to the right side of the roller block, and a motor fixedly connected to the inner wall of the support plate. The top of the support plate is equipped with a multi-functional welding machine and a protective mechanism for workpiece protection. The inner wall of the support plate is equipped with a cooling mechanism for ventilation. The moving plate is slidably connected to the circumferential surface of the limiting column, which limits the movement of the moving plate. The reciprocating screw is fixedly connected to the output end of the motor. The L-block contacts the support plate, and the abutment plate contacts the support plate, used for the movement of the roller block. The moving column is slidably connected to the inner wall of the isolation ring, and is used to quickly position the automotive metal parts. This improves the stability of the device during the clamping process of larger automotive metal parts, increases the efficiency of clamping and fixing automotive metal parts, and indirectly improves the welding efficiency of the device. During its movement, the moving column can center the automotive metal parts before clamping and fixing them, improving the subsequent welding efficiency of the device and assisting in the subsequent welding of automotive metal parts.

[0007] Preferably, the protective mechanism includes a fixed frame, an electric push rod, a connecting frame, a protective cover, a fixed block, and a connecting round block. The fixed frame is fixedly connected to the top of the support plate, the electric push rod is fixedly connected to the inner wall of the fixed frame, the connecting frame is fixedly connected to the top of the support plate, the protective cover is rotatably connected to the inner wall of the connecting frame, the fixed block is fixedly connected to the telescopic end of the electric push rod, and the connecting round block is fixedly connected to the top of the protective cover. The protective mechanism also includes an inclined plate, a guide plate, an elastic telescopic rod, and a pressure plate. The inclined plate is fixedly connected to the top of the L-shaped block, the guide plate is fixedly connected to the inner wall of the clamping plate, and the elastic telescopic rod is fixedly connected to the inclined plate. The inner wall of the plate is fixedly connected to the telescopic end of the elastic telescopic rod three. The connecting round block is rotatably connected to the inner wall of the fixed block. The pressure plate is in contact with the guide plate and is used to press down on the automotive metal parts from above, so that the protective cover can relatively close the welding area, which can prevent the operator from accidentally touching the welded automotive metal parts. The surface temperature of the welded automotive metal parts is high, which can improve the efficiency of the device. The pressure plate can apply downward pressure to the automotive metal parts, which can improve the clamping and fixing effect of the device on the automotive metal parts and prevent the automotive metal parts from shifting during the welding process, thus affecting the subsequent welding quality.

[0008] Preferably, the cooling mechanism includes a fourth elastic telescopic rod, a long frame block, a first protrusion, a second protrusion, and a sealing plate. The fourth elastic telescopic rod is fixedly connected to the inner wall of the support plate. The long frame block is fixedly connected to the telescopic end of the fourth elastic telescopic rod. The first protrusion is fixedly connected to the inner wall of the protective cover. The second protrusion is fixedly connected to the inner wall of the long frame block. The sealing plate is fixedly connected to the inner wall of the long frame block. The cooling mechanism also includes a fixed column and a top plate. The fixed column is fixedly connected to the top of the sealing plate, and the top plate is fixedly connected to the top of the fixed column. The second protrusion is located on the movement trajectory of the first protrusion. The top plate is in contact with the placement tray, and the top plate is used to cause the placement tray to shake briefly, so that the sealing plate can open the bottom area of ​​the placement tray, which can achieve air convection efficiency, accelerate the cooling speed of automotive metal parts after welding, and improve the utilization efficiency of the device. The rise of the fixed column will drive the top plate to rise. During the rise, the top plate can tap the bottom of the placement tray, which can cause debris to fall off during the welding process and ensure the welding stability of subsequent parts.

[0009] The present invention, by adopting the above technical solution, can bring the following beneficial effects:

[0010] 1. This automotive metal parts welding auxiliary device, through the coordinated movement of the base, support plate, reciprocating lead screw, moving plate, limiting post, L-block, elastic telescopic rod one, clamping plate, stabilizing post, placement plate, isolation ring, gear, rack, abutment plate, elastic telescopic rod two, roller block, and moving post, can improve the stability of the device during the clamping process of larger automotive metal parts, improve the efficiency of the device in clamping and fixing automotive metal parts, and indirectly improve the welding efficiency of the device for automotive metal parts. During the movement of the moving post, it can center and position the automotive metal parts before clamping and fixing them, which can improve the subsequent welding efficiency of the device and assist in the subsequent welding of automotive metal parts. At the same time, it can clamp parts of different sizes by mechanical means without frequent modification of CNC clamping parameters, thus improving the production efficiency of the device.

[0011] 2. This automotive metal parts welding auxiliary device, through the coordinated movement of a fixed frame, electric push rod, connecting frame, protective cover, fixed block, connecting round block, inclined plate, guide plate, elastic telescopic rod, and pressure plate, enables the protective cover to relatively close the welding area, preventing operators from accidentally touching the welded automotive metal parts. The high surface temperature of the welded automotive metal parts improves the efficiency of the device. The pressure plate applies downward pressure to the automotive metal parts, improving the clamping and fixing effect of the device and preventing displacement of the automotive metal parts during the welding process, which would affect the subsequent welding quality.

[0012] 3. This automotive metal parts welding auxiliary device, through the coordinated movement of the elastic telescopic rod four, long frame block, protrusion one, protrusion two, sealing plate, fixing column, and top plate, enables the sealing plate to open the bottom area of ​​the placement tray, achieving efficient air convection and accelerating the cooling speed of automotive metal parts after welding, thus improving the efficiency of the device. The rising of the fixing column will drive the top plate to rise, and during the rising process, the top plate can tap the bottom of the placement tray, causing debris to fall off during the welding process and ensuring the stability of subsequent parts welding. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a half-sectional view of the support plate structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the reciprocating lead screw structure of the present invention;

[0016] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0017] Figure 5 This is a schematic diagram of the protective mechanism of the present invention;

[0018] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point B in the middle;

[0019] Figure 7 This is a schematic diagram of the cooling mechanism of the present invention;

[0020] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point C.

[0021] In the diagram: 1. Base; 2. Support plate; 3. Reciprocating screw; 4. Protective mechanism; 5. Cooling mechanism; 6. Moving plate; 7. Limiting post; 8. L-block; 9. Elastic telescopic rod one; 10. Clamping plate; 11. Stabilizing post; 12. Placement tray; 13. Isolation ring; 14. Gear; 15. Rack; 16. Support plate; 17. Elastic telescopic rod two; 18. Roller block; 19. Moving post; 401. Fixed frame; 402. Electric push rod; 403. Connecting frame; 404. Protective cover; 405. Fixed block; 406. Connecting round block; 407. Inclined plate; 408. Guide plate; 409. Elastic telescopic rod three; 410. Pressure plate; 501. Elastic telescopic rod four; 502. Long frame block; 503. Protrusion one; 504. Protrusion two; 505. Sealing plate; 506. Fixed post; 507. Top plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-8One embodiment of the present invention is: a welding auxiliary device for automotive metal parts, comprising a base 1, a support plate 2 fixedly connected to the top of the base 1, a reciprocating screw 3 rotatably connected to the inner wall of the support plate 2, a movable plate 6 movably connected to the circumferential surface of the reciprocating screw 3, a limit post 7 fixedly connected to the inner wall of the support plate 2, an L-block 8 fixedly connected to the inner wall of the movable plate 6, an elastic telescopic rod 9 fixedly connected to the right side of the L-block 8, a clamping plate 10 fixedly connected to the telescopic end of the elastic telescopic rod 9, and a stabilizing post 11 fixedly connected to the inner wall of the L-block 8. The inner wall of the plate 6 is rotatably connected to a placement plate 12. An isolation ring 13 is fixedly connected to the top of the placement plate 12. A gear 14 is fixedly connected to the bottom of the placement plate 12. A rack 15 is fixedly connected to the inner wall of the moving plate 6. A stop plate 16 is fixedly connected to the top of the moving plate 6. An elastic telescopic rod 17 is fixedly connected to the circumferential surface of the isolation ring 13. A roller block 18 is fixedly connected to the telescopic end of the elastic telescopic rod 17. A moving column 19 is fixedly connected to the right side of the roller block 18. A motor is fixedly connected to the inner wall of the support plate 2. A multi-functional welding machine is installed on the top of the support plate 2.

[0024] When the device is activated, the operator first needs to place the welded automotive metal parts on the top area of ​​the placement tray 12. After the automotive metal parts are placed, the motor will start, and the output end of the motor will drive the reciprocating screw 3 to rotate. The rotation of the reciprocating screw 3 will drive the moving plate 6 to rotate. However, the moving plate 6 is limited by the movement of the limiting post 7. The limiting post 7 will cause the moving plate 6 to move laterally back and forth through the reciprocating groove on the surface of the reciprocating screw 3 during the rotation of the reciprocating screw 3. The movement of the moving plate 6 will drive the L block 8 to move, the movement of the L block 8 will drive the elastic telescopic rod 9 to move, the movement of the elastic telescopic rod 9 will drive the clamping plate 10 to move, and the movement of the L block 8 will drive the stabilizing post 11 to move. After the clamping plate 10 has moved a certain distance, the placement tray 12 will be in contact with the automotive metal parts on the top area of ​​the placement tray 12. Upon contact, block L8 continues to move, causing elastic telescopic rod 9 to move further. The continued movement of elastic telescopic rod 9 then moves clamping plate 10, enabling it to clamp and fix the automotive metal parts. During the movement of clamping plate 10, the automotive metal parts exert a reaction force, pushing clamping plate 10 to press against elastic telescopic rod 9. This shortens the distance between clamping plate 10 and stabilizing column 11 until they contact. Stabilizing column 11 strengthens the connection of clamping plate 10, improving the stability of the device during clamping of larger automotive metal parts, increasing the efficiency of clamping and fixing automotive metal parts, and indirectly improving the welding efficiency of automotive metal parts. This allows for the clamping of parts of different sizes using mechanical means, eliminating the need for frequent modifications to CNC clamping parameters and improving the device's production efficiency.

[0025] The top of the support plate 2 is provided with a protective mechanism 4 for workpiece protection, and the inner wall of the support plate 2 is provided with a cooling mechanism 5 for ventilation. The moving plate 6 is slidably connected to the circumferential surface of the limiting post 7, and the limiting post 7 is used to limit the movement of the moving plate 6. The reciprocating screw 3 is fixedly connected to the output end of the motor. The L block 8 is in contact with the support plate 2, the abutment plate 16 is in contact with the support plate 2, and the abutment plate 16 is used for the movement of the roller block 18. The moving post 19 is slidably connected to the inner wall of the isolation ring 13, and the moving post 19 is used to push the automotive metal parts for rapid positioning.

[0026] When the device is activated, the movement of the movable plate 6 will drive the rack 15 to move, and at the same time, the end of the movable plate 6 will also drive the abutment plate 16 to move. After the rack 15 has traveled a certain distance, the rack 15 will contact and mesh with the gear 14. At this time, during the movement of the rack 15, the rack 15 will push the gear 14 to rotate. The rotation of the gear 14 will drive the placement plate 12 to rotate, the rotation of the placement plate 12 will drive the isolation ring 13 to rotate, and the rotation of the isolation ring 13 will drive the elastic telescopic rod 17 to rotate. The roller block 18 will rotate, and the rotation of the roller block 18 will cause the moving column 19 to rotate. When the roller block 18 rotates to a certain angle, the roller block 18 will contact the abutment plate 16. At this time, the abutment plate 16 will squeeze and push the roller block 18 to move. The movement of the roller block 18 will cause the moving column 19 to move. During the movement, the moving column 19 can center and position the automotive metal parts before clamping and fixing them, which can improve the subsequent welding efficiency of the device and assist in the subsequent welding of automotive metal parts.

[0027] Overall working principle: The distance between the clamping plate 10 and the stabilizing column 11 is shortened until the clamping plate 10 contacts the stabilizing column 11. At this time, the stabilizing column 11 can strengthen the connection strength of the clamping plate 10, which can improve the stability of the device during the clamping process of larger automotive metal parts, improve the efficiency of the device in clamping and fixing automotive metal parts, and indirectly improve the welding efficiency of the device for automotive metal parts. The movement of the roller block 18 will drive the moving column 19 to move. During the movement, the moving column 19 can center and position the automotive metal parts before clamping and fixing them, which can improve the subsequent welding efficiency of the device and assist the subsequent welding of automotive metal parts.

[0028] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, the protective mechanism 4 includes a fixed frame 401, an electric push rod 402, a connecting frame 403, a protective cover 404, a fixed block 405, and a connecting round block 406. The fixed frame 401 is fixedly connected to the top of the support plate 2, the electric push rod 402 is fixedly connected to the inner wall of the fixed frame 401, the connecting frame 403 is fixedly connected to the top of the support plate 2, the protective cover 404 is rotatably connected to the inner wall of the connecting frame 403, the fixed block 405 is fixedly connected to the telescopic end of the electric push rod 402, and the connecting round block 406 is fixedly connected to the top of the protective cover 404.

[0029] After the device finishes welding, the electric push rod 402 will be activated. The telescopic end of the electric push rod 402 will drive the fixed block 405 to move. The movement of the fixed block 405 will drive the connecting block 406 to move. During the movement of the fixed block 405 and the connecting block 406, the angle between the fixed block 405 and the connecting block 406 will be adjusted. At the same time, the movement of the connecting block 406 will drive the protective cover 404 to move. At this time, the protective cover 404 will rotate around the rotation point of the connecting frame 403. After rotating a certain angle, the protective cover 404 can open the welding area relatively. The principle is that when the telescopic end of the electric push rod 402 is reset, the protective cover 404 can close the welding area relatively, which can prevent the operator from accidentally touching the welded automotive metal parts. The surface temperature of the welded automotive metal parts is high, which can improve the efficiency of the device.

[0030] The protective mechanism 4 also includes an inclined plate 407, a guide plate 408, an elastic telescopic rod 409, and a pressure plate 410. The inclined plate 407 is fixedly connected to the top of the L block 8, the guide plate 408 is fixedly connected to the inner wall of the clamping plate 10, the elastic telescopic rod 409 is fixedly connected to the inner wall of the inclined plate 407, and the pressure plate 410 is fixedly connected to the telescopic end of the elastic telescopic rod 409. The connecting round block 406 is rotatably connected to the inner wall of the fixed block 405. The pressure plate 410 is in contact with the guide plate 408 and is used to press down on the automotive metal parts from above.

[0031] When the device is activated, the movement of block L8 will cause the inclined plate 407 to move, which in turn will cause the elastic telescopic rod 409 to move. The movement of the elastic telescopic rod 409 will cause the pressure plate 410 to move, and the movement of the clamping plate 10 will cause the guide plate 408 to move. When the clamping plate 10 contacts and clamps the automotive metal parts, the automotive parts will react and push the clamping plate 10. As the clamping plate 10 approaches block L8, it will simultaneously drive the guide plate 408 to move. After the guide plate 408 has moved a certain distance, it will no longer contact the pressure plate 410. At this time, the limit of the pressure plate 410 is released, and the pressure plate 410 will reset and move downward through the elastic telescopic rod 409. At this time, the pressure plate 410 can apply downward pressure to the automotive metal parts, which can improve the clamping and fixing effect of the device on the automotive metal parts and prevent the automotive metal parts from shifting during the welding process, thus affecting the subsequent welding quality.

[0032] The cooling mechanism 5 includes a four-elastic telescopic rod 501, a long frame block 502, a first protrusion 503, a second protrusion 504, and a sealing plate 505. The four-elastic telescopic rod 501 is fixedly connected to the inner wall of the support plate 2. The long frame block 502 is fixedly connected to the telescopic end of the four-elastic telescopic rod 501. The first protrusion 503 is fixedly connected to the inner wall of the protective cover 404. The second protrusion 504 is fixedly connected to the inner wall of the long frame block 502. The sealing plate 505 is fixedly connected to the inner wall of the long frame block 502.

[0033] When the device is started, the rotation of the protective cover 404 will cause the first protrusion 503 to rotate. After the first protrusion 503 rotates to a certain angle, it will contact the second protrusion 504 and push the second protrusion 504 to move by its own convex surface. At this time, the second protrusion 504 will move downward under the pressure of the first protrusion 503. The downward movement of the second protrusion 504 will cause the long frame block 502 to move downward. The movement of the long frame block 502 will cause the sealing plate 505 to move. After the sealing plate 505 moves downward, the sealing plate 505 can open the bottom area of ​​the placement plate 12, which can realize the air convection efficiency, accelerate the cooling speed of automotive metal parts after welding, and improve the efficiency of the device.

[0034] The cooling mechanism 5 also includes a fixed column 506 and a top plate 507. The fixed column 506 is fixedly connected to the top of the sealing plate 505, and the top plate 507 is fixedly connected to the top of the fixed column 506. The second protrusion 504 is located on the movement trajectory of the first protrusion 503. The top plate 507 is in contact with the placement plate 12, and the top plate 507 is used to make the placement plate 12 vibrate briefly.

[0035] When the device is started, as the sealing plate 505 moves downward, the movement of the sealing plate 505 will cause the fixing column 506 to move downward. The movement of the fixing column 506 will cause the top plate 507 to move. After the elastic telescopic rod 501 resets through its own reset characteristics, the sealing plate 505 will similarly cause the fixing column 506 to rise. The rise of the fixing column 506 will cause the top plate 507 to rise. During the rise, the top plate 507 can tap the bottom of the placement plate 12, which can cause debris to fall off during the welding process and ensure the stability of the welding of subsequent parts.

[0036] Overall working principle: The protective cover 404 can relatively open the welding area. When the electric push rod 402 returns to its original position, the protective cover 404 can relatively close the welding area, preventing operators from accidentally touching the welded automotive metal parts. The surface temperature of the welded automotive metal parts is high, which improves the efficiency of the device. The pressure plate 410 will move downwards via the elastic telescopic rod 409, applying downward pressure to the automotive metal parts. This improves the clamping and fixing effect of the device on the automotive metal parts, preventing displacement of the automotive metal parts during welding and affecting subsequent processes. To ensure continued welding quality, after the sealing plate 505 moves downward, it can open the bottom area of ​​the placement tray 12, enabling air convection efficiency and accelerating the cooling speed of automotive metal parts after welding, thus improving the efficiency of the device. When the elastic telescopic rod 501 resets through its own reset characteristics, the sealing plate 505 will similarly drive the fixing column 506 to rise. The rise of the fixing column 506 will drive the top plate 507 to rise. During the rise, the top plate 507 can tap the bottom of the placement tray 12, causing debris to fall off during the welding process and ensuring the stability of subsequent part welding.

[0037] This invention provides an auxiliary device for welding automotive metal parts. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A welding auxiliary device for automotive metal parts, comprising a base (1), characterized in that: A support plate (2) is fixedly connected to the top of the base (1). A reciprocating screw (3) is rotatably connected to the inner wall of the support plate (2). A moving plate (6) is movably connected to the circumferential surface of the reciprocating screw (3). A limit post (7) is fixedly connected to the inner wall of the support plate (2). An L-block (8) is fixedly connected to the inner wall of the moving plate (6). An elastic telescopic rod (9) is fixedly connected to the right side of the L-block (8). A clamping plate (10) is fixedly connected to the telescopic end of the elastic telescopic rod (9). A stabilizing post (11) is fixedly connected to the inner wall of the L-block (8). A placement plate (12) is rotatably connected to the inner wall of the support plate (2). An isolation ring (13) is fixedly connected to the top of the placement tray (12), a gear (14) is fixedly connected to the bottom of the placement tray (12), a rack (15) is fixedly connected to the inner wall of the moving plate (6), a stop plate (16) is fixedly connected to the top of the moving plate (6), an elastic telescopic rod (17) is fixedly connected to the circumferential surface of the isolation ring (13), a roller block (18) is fixedly connected to the telescopic end of the elastic telescopic rod (17), a moving column (19) is fixedly connected to the right side of the roller block (18), a motor is fixedly connected to the inner wall of the support plate (2), and a multi-functional welding machine is provided on the top of the support plate (2).

2. The welding auxiliary device for automotive metal parts according to claim 1, characterized in that: The top of the support plate (2) is provided with a protective mechanism (4) for workpiece protection, and the inner wall of the support plate (2) is provided with a cooling mechanism (5) for ventilation. The moving plate (6) is slidably connected to the circumferential surface of the limiting post (7), and the limiting post (7) is used to limit the movement of the moving plate (6). The reciprocating screw (3) is fixedly connected to the output end of the motor, and the L block (8) is in contact with the support plate (2).

3. The welding auxiliary device for automotive metal parts according to claim 2, characterized in that: The abutment (16) contacts the support plate (2), and the abutment (16) is used for the movement of the roller block (18). The moving column (19) is slidably connected to the inner wall of the isolation ring (13), and the moving column (19) is used to push the automotive metal parts for rapid positioning.

4. The welding auxiliary device for automotive metal parts according to claim 3, characterized in that: The protective mechanism (4) includes a fixed frame (401), an electric push rod (402), a connecting frame (403), a protective cover (404), a fixed block (405), and a connecting round block (406). The fixed frame (401) is fixedly connected to the top of the support plate (2). The electric push rod (402) is fixedly connected to the inner wall of the fixed frame (401). The connecting frame (403) is fixedly connected to the top of the support plate (2). The protective cover (404) is rotatably connected to the inner wall of the connecting frame (403). The fixed block (405) is fixedly connected to the telescopic end of the electric push rod (402). The connecting round block (406) is fixedly connected to the top of the protective cover (404).

5. The welding auxiliary device for automotive metal parts according to claim 4, characterized in that: The protective mechanism (4) also includes an inclined plate (407), a guide plate (408), an elastic telescopic rod three (409), and a pressure plate (410). The inclined plate (407) is fixedly connected to the top of the L block (8), the guide plate (408) is fixedly connected to the inner wall of the clamping plate (10), the elastic telescopic rod three (409) is fixedly connected to the inner wall of the inclined plate (407), and the pressure plate (410) is fixedly connected to the telescopic end of the elastic telescopic rod three (409).

6. The welding auxiliary device for automotive metal parts according to claim 5, characterized in that: The connecting block (406) is rotatably connected to the inner wall of the fixed block (405), the pressure plate (410) is in contact with the guide plate (408), and the pressure plate (410) is used to press down on the automotive metal parts from above.

7. The welding auxiliary device for automotive metal parts according to claim 6, characterized in that: The cooling mechanism (5) includes a four-elastomer telescopic rod (501), a long frame block (502), a first protrusion (503), a second protrusion (504), and a sealing plate (505). The four-elastomer telescopic rod (501) is fixedly connected to the inner wall of the support plate (2). The long frame block (502) is fixedly connected to the telescopic end of the four-elastomer telescopic rod (501). The first protrusion (503) is fixedly connected to the inner wall of the protective cover (404). The second protrusion (504) is fixedly connected to the inner wall of the long frame block (502). The sealing plate (505) is fixedly connected to the inner wall of the long frame block (502).

8. The welding auxiliary device for automotive metal parts according to claim 7, characterized in that: The cooling mechanism (5) further includes a fixing column (506) and a top plate (507). The fixing column (506) is fixedly connected to the top of the sealing plate (505), and the top plate (507) is fixedly connected to the top of the fixing column (506).

9. The welding auxiliary device for automotive metal parts according to claim 8, characterized in that: The second protrusion (504) is located on the movement trajectory of the first protrusion (503), the top plate (507) is in contact with the placement disk (12), and the top plate (507) is used to cause the placement disk (12) to shake briefly.

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