Auxiliary welding device for automobile parts

Abstract

The invention discloses an automobile part welding auxiliary device which comprises a fixing frame, supporting rods are symmetrically and rotationally connected to the two ends of the bottom face of the fixing frame, and rolling wheels used for sliding of the bottoms of the supporting rods are arranged at the bottom ends of the supporting rods; wherein a sleeve rod is fixedly installed on the outer side of the bottom end of the supporting rod, a first telescopic rod is connected to the interior of the sleeve rod in a telescopic mode, and a traction mechanism capable of adjusting and controlling the opening angle of the supporting rod is arranged on the inner side of the sleeve rod; the top end of the sliding plate is connected to the interior of the supporting rod in a sliding mode, and a second telescopic rod is installed on the inner side of the tail end of the sliding plate in a telescopic mode; and the fixing frame is integrally arranged in the middle of the fixing frame, and an adjusting mechanism is arranged on the inner side of the fixing frame. According to the auxiliary welding device for the automobile parts, the automobile parts to be welded, machined and maintained can be conveniently and rapidly limited, adjustment and use can be conveniently conducted according to different parts, and the welding efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and more particularly to the technical field of automobile part welding, and specifically to a welding auxiliary device for automobile parts. Background Art

[0002] With the continuous development of new energy technologies, the research and development and production of new energy vehicles have been continuously progressing, resulting in an increasing usage of new energy vehicles. When performing operations such as processing and repairing automobiles, it is often necessary to carry out welding processing on automobile parts to maintain the integrity of the automobile parts and improve the overall strength. For example, the patent with the authorization announcement number CN 219053344 U discloses a welding auxiliary device for automobile parts, which relates to the field of automobile part welding. It includes a bottom plate. A fixed block is fixedly connected to the top of the bottom plate. A push rod is threadedly connected inside the fixed block. Rotating rods are rotatably connected to both sides of the bottom plate. One end of the rotating rod away from the bottom plate is fixedly connected to a mounting plate. A fixator is fixedly connected to the top of the mounting plate. A connecting plate is fixedly connected to the top of the bottom plate. A moving box is fixedly connected to the surface of the connecting plate. By placing the main workpiece on the top of the bottom plate and using the push rod to fix the workpiece, and then fixing the tubular part in the pipe clamp, by rotating the rotating handle, the control rod rotates. Under the action of the thread, the control rod moves upward and drives the connecting plate connected to the moving box to move upward, lifting the bottom plate. When the angle reaches the required value, welding work can be carried out. The structure of the present utility model is simple, saving the repetitive operations in welding work and improving work efficiency. Another example is the patent with the application publication number CN 119820188 A, which discloses an auxiliary welding device for automobile parts. It includes a workbench. A bottom welding box is fixedly connected to the upper surface of the workbench. Two side plates are fixedly connected to the upper surface of the workbench. A driving component is arranged on one side of each side plate. A limiting frame is arranged on the side of the two side plates close to each other. The limiting frame is driven by the driving component. A welding head is slidably arranged on the upper surfaces of the two side plates. First guide rails are fixedly connected to the upper surfaces of the two side plates. The same second guide rail is slidably connected to the two first guide rails. A third guide rail is slidably connected to the lower surface of the second guide rail. A welding head is fixedly connected to the lower surface of the sliding block. The welding head is used for welding the abutting part of the upper end faces of two parts. By setting a grinding component and a dissolving component, the problem of oil stains or residual cutting burrs adhering to the butting end faces of workpieces is solved. However, considering the actual use of the current welding auxiliary devices, there are still certain drawbacks, such as: 1. Automobile parts to be welded are generally large. For conventional auxiliary devices, most of them require manual lifting and fixing of the parts to be welded, which is time-consuming and laborious and not convenient for quickly limiting the use of the parts. 2. Since automotive parts generally have different curve radians, general auxiliary devices are not convenient for adjusting and using for automotive parts, which affects the welding efficiency. Therefore, we propose a welding auxiliary device for automotive parts to facilitate solving the problems raised above. Summary of the Invention

[0003] The purpose of the present invention is to provide a welding auxiliary device for automotive parts to solve the problems in the current welding auxiliary device for automotive parts in the above-mentioned background technology, which is time-consuming and laborious, not convenient for adjustment, and not conducive to improving the welding efficiency.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A welding auxiliary device for automotive parts, including: A fixed frame, two ends of the bottom surface of the fixed frame are symmetrically and rotatably connected with support rods, and rollers for sliding at the bottom of the support rods are arranged at the bottom ends of the support rods. Among them, a sleeve rod is fixedly installed on the outer side of the bottom end of the support rod, a first telescopic rod is telescopically connected inside the sleeve rod, and a pulling mechanism capable of regulating the opening angle of the support rod is arranged inside the sleeve rod. A sliding plate, the top end of the sliding plate is slidably connected inside the support rod, and a second telescopic rod is telescopically installed inside the inner side of the end of the sliding plate. A fixed frame, the fixed frame is integrally arranged in the middle of the fixed frame, an adjusting mechanism is arranged inside the fixed frame, the inside of the fixed frame is connected with a limiting seat through the adjusting mechanism, the limiting seat is a cylindrical structure, and a limiting cover is slidably installed on the top of the limiting seat.

[0005] Furthermore: The top end of the support rod is correspondingly rotatably connected with the bottom surface of the fixed frame through a connecting block, the inner side of the top end of the connecting block is a flat structure, and the rotation angle range of the support rod is 0 - 90°.

[0006] Furthermore: The pulling mechanism includes: A housing, the housing is fixedly installed inside the sleeve rod, and a rotating shaft is rotatably installed inside the housing. A pull rope, the top end of the pull rope is wound and connected to the outer side of the rotating shaft, and the end of the pull rope passes through a wire releasing hole opened on the surface of the housing and is connected with a limiting head. A clamping head, the clamping head is arranged opposite to the housing, and a clamping groove capable of corresponding assembly with the limiting head is opened inside the clamping head.

[0007] Furthermore: A worm gear is integrally and fixedly installed at the top end of the rotating shaft, and a worm is meshed and connected to the outer side of the worm gear, and the worm is rotatably installed inside the housing.

[0008] Furthermore: An installation groove is recessed on the outer side surface of the support rod. A sliding plate is arranged inside the installation groove. A pressing plate for pressing and limiting the sliding plate is arranged at the top of the installation groove. A first sliding groove is formed inside the pressing plate; Wherein, limiting convex rods corresponding to and engaging with the first sliding groove are symmetrically formed on the outer side surface of the top end of the sliding plate. A first fixing bolt is threadedly connected to the middle of the outer side of the end of the sliding plate. A pressing block is welded and fixed to the outer side of the middle of the first fixing bolt. The pressing block is located outside the pressing plate.

[0009] Furthermore: Ball beads are symmetrically embedded on the inner side surface of the top end of the sliding plate. The ball beads are rotatably installed on the inner side surface of the sliding plate. The outer sides of the ball beads are in contact with a second sliding groove formed at the bottom of the installation groove.

[0010] Furthermore: Limiting rings are symmetrically installed on the upper and lower inner side surfaces of the end of the sliding plate. A second telescopic rod is inserted through the limiting rings. A second fixing bolt for fixing the second telescopic rod is arranged in the middle of the outer side of the limiting rings.

[0011] Furthermore: A back plate is integrally fixed to the outer side surface of the fixed frame. Third sliding grooves are formed on the top and bottom end faces of the fixed frame. Sliders are slidably installed inside the third sliding grooves. An adjusting rod is rotatably installed in the middle of the inner sides of the sliders. A vertical rod vertically connected to the inner sides of the sliders is arranged on the outer side of the adjusting rod. An adjusting block is slidably connected to the outer side of the vertical rod. A handle rod is installed at the top end of the adjusting rod.

[0012] Furthermore: A limiting seat is installed at the top end of the adjusting block. An arc-shaped structure protrudes outward from the bottom of the limiting seat. A limiting cover with the same outer diameter as the limiting seat is slidably installed on the top of the limiting seat. Third fixing bolts are symmetrically connected to the outer side of the limiting cover; Wherein, a fourth sliding groove is formed on the outer side surface of the limiting seat. A clamping block corresponding to and engaging with the fourth sliding groove is arranged on the inner side of the limiting cover.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: This welding auxiliary device for automotive parts facilitates the rapid limiting of automotive parts to be welded, processed, and repaired, is convenient for adjusting and using according to different parts, and is beneficial to improving the welding efficiency; 1. The support rod rotates within a range of 0 - 90° through the connecting block and can be opened, causing the height of the fixing frame to decrease, so as to facilitate the entry of automotive parts. At the same time, the inner side of the support rod is telescopically connected through the sleeve rod and the first telescopic rod, and the distance between the two groups of fixing frames can be adjusted to facilitate adapting to different automotive parts quickly; 2. The sliding plate can slide inside the support rod. After the two groups of sliding plates are connected by the second telescopic rod, the sliding of the sliding plate facilitates placing automotive parts on the surface of the sliding plate and sliding them from a lower position to a higher position, which is convenient for quickly limiting the use of automotive parts; 3. The slider can slide inside the fixed frame, and the lifting block can be lifted by rotating the adjusting rod. It is convenient to adjust the relative position of the limiting seat by adjusting the adjusting blocks inside the two opposite fixed frames, which is convenient for limiting the ends of automotive parts with the same curvature; 4. By providing a limiting seat with an arc-shaped protrusion at the bottom, it is convenient to place the end of the automotive part. And by sliding the limiting cover on the limiting seat, the limiting cover can be covered outside the end of the automotive part. The end of the automotive part is limited by screwing in the third fixing bolt to maintain stability, so as to facilitate welding use. Description of the Drawings

[0014] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings: Figure 1 It is a left-side axonometric structure schematic diagram of the present invention; Figure 2 It is a rear-side axonometric structure schematic diagram of the present invention; Figure 3 It is a side-sectional structure schematic diagram of the present invention; Figure 4 It is a front-sectional structure schematic diagram of the present invention; Figure 5 It is a decomposition structure schematic diagram of the pulling mechanism of the present invention; Figure 6 It is a decomposition structure schematic diagram of the sliding plate installation of the present invention; Figure 7 It is a decomposition structure schematic diagram of the limiting seat installation of the present invention.

[0015] In the figure: 1, fixing frame; 2, support rod; 3, connecting block; 4, roller; 5, sleeve rod; 6, first telescopic rod; 7, housing; 8, rotating shaft; 9, pull rope; 10, wire outlet hole; 11, limiting head; 12, chuck; 13, clamping groove; 14, worm gear; 15, worm; 16, installation groove; 17, sliding plate; 18, pressing plate; 19, first chute; 20, limiting convex rod; 21, connecting platform; 22, first fixing bolt; 23, pressing block; 24, ball; 25, second chute; 26, limiting ring; 27, second telescopic rod; 28, second fixing bolt; 29, fixing frame; 30, back plate; 31, third chute; 32, slider; 33, adjusting rod; 34, vertical rod; 35, adjusting block; 36, handle bar; 37, limiting seat; 38, limiting cover; 39, fourth chute; 40, clamping block; 41, third fixing bolt. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention, so as to fully understand the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects and implement accordingly. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0017] To solve the problems existing in the prior art, please refer to Figures 1 - 7 , the present invention provides the following technical solutions: An auxiliary device for welding automotive parts, comprising: a fixing frame 1, a support rod 2, a connecting block 3, a roller 4, a sleeve rod 5, a first telescopic rod 6, a housing 7, a rotating shaft 8, a pull rope 9, a wire outlet hole 10, a limiting head 11, a chuck 12, a clamping groove 13, a worm gear 14, a worm 15, an installation groove 16, a sliding plate 17, a pressing plate 18, a first chute 19, a limiting convex rod 20, a connecting platform 21, a first fixing bolt 22, a pressing block 23, a ball 24, a second chute 25, a limiting ring 26, a second telescopic rod 27, a second fixing bolt 28, a fixing frame 29, a back plate 30, a third chute 31, a slider 32, an adjusting rod 33, a vertical rod 34, an adjusting block 35, a handle bar 36, a limiting seat 37, a limiting cover 38, a fourth chute 39, a clamping block 40 and a third fixing bolt 41; Among them: As in Figures 1 - 3 , at both ends of the bottom surface of the fixing frame 1, support rods 2 are symmetrically and rotatably connected. At the bottom end of the support rod 2, rollers 4 for sliding at the bottom are provided. Outside the bottom end of the support rod 2, a sleeve rod 5 is fixedly installed. Inside the sleeve rod 5, a first telescopic rod 6 is telescopically connected. Inside the sleeve rod 5, a pulling mechanism capable of regulating the opening angle of the support rod 2 is provided. The top end of the support rod 2 is correspondingly rotatably connected to the bottom surface of the fixing frame 1 through a connecting block 3. The inner side of the top end of the connecting block 3 is a flat structure. The rotation angle range of the support rod 2 is 0-90°.

[0018] In a specific application scenario, such as Figure 1 In [the scenario], there are 2 sets of fixing frames 1 arranged oppositely. The bottom of the fixing frame 1 is correspondingly connected between the sleeve rod 5 and the first telescopic rod 6 through symmetrically arranged support rods 2, so that both ends of the first telescopic rod 6 are respectively connected to the opposite sleeve rods 5, so that the 2 sets of opposite fixing frames 1 can be assembled and used. At the same time, such as Figure 2 and Figure 3 In [the scenario], rollers 4 are arranged at the bottom of the support rod 2. By sliding the bottom of the support rod 2 outward through the rollers 4 and using the opening of the support rod 2, the overall height of the fixing frame 1 is decreased, so as to facilitate the use of limiting automotive parts after unfolding.

[0019] Adopting the above technical solution: By the opening of the support rod 2, the fixing frame 1 can be lifted and lowered, so as to facilitate the use of limiting heavier automotive parts. And the inner plane of the connecting block 3 is arranged, which is convenient for limiting the rotation angle of the support rod 2, so that the support rod 2 can be vertically limited with respect to the fixing frame 1, which is convenient for overall moving and storing.

[0020] Among them: Such as Figures 1 - 3 and Figure 5 In [the scenario], the pulling mechanism includes: a housing 7, a rotating shaft 8, a pulling rope 9, a wire releasing hole 10, a limiting head 11, a clamping head 12, a clamping groove 13, a worm gear 14 and a worm 15. The housing 7 is fixedly installed inside the sleeve rod 5. A rotating shaft 8 is rotatably installed inside the housing 7. The top end of the pulling rope 9 is wound and connected to the outside of the rotating shaft 8. The end of the pulling rope 9 passes through the wire releasing hole 10 opened on the surface of the housing 7 and is connected to a limiting head 11. The clamping head 12 is arranged oppositely to the housing 7. A clamping groove 13 capable of corresponding assembly with the limiting head 11 is opened inside the clamping head 12. The top end of the rotating shaft 8 is integrally and fixedly installed with a worm gear 14. A worm 15 is meshed and connected to the outside of the worm gear 14. The worm 15 is rotatably installed inside the housing 7.

[0021] In a specific application scenario, such as Figure 2 and Figure 5 In [the scenario], the worm 15 is rotated inside the housing 7. By the meshing transmission between the worm 15 and the worm gear 14, the worm gear 14 is rotated. Through the integral structure between the worm gear 14 and the rotating shaft 8, the rotating shaft 8 is driven to rotate. By winding the pulling rope 9 by the rotating shaft 8, the rotating shaft 8 winds and unwinds the pulling rope 9. By the clamping connection between the end of the pulling rope 9 and the clamping head 12 through the limiting head 11, it is convenient to adjust the distance between the left and right opposite sleeve rods 5. So as to adjust the unfolding angle of the support rod 2 below the fixing frame 1 through the winding and unwinding of the pulling rope 9, so that the fixing frame 1 is lowered by the unfolding of the support rod 2, so as to facilitate the fixing frame 1 to limit automotive parts.

[0022] Adopt the above technical solution: The drawstring 9 is wound and unwound by the rotating shaft 8, which is convenient for adjusting the opening angle of the support rod 2 for use, so as to conveniently adjust the height of the fixing frame 1. The rotating shafts of the connecting blocks 3 on the left and right sides can be driven in reverse by gears or belts to maintain the synchronization device.

[0023] Among them: As Figures 1 - 4 and Figure 6 shown in, the top end of the sliding plate 17 is slidably connected inside the support rod 2. The inner side of the end of the sliding plate 17 is telescopically installed with a second telescopic rod 27. An installation groove 16 is recessed on the outer side surface of the support rod 2. The sliding plate 17 is arranged inside the installation groove 16. A pressing plate 18 for pressing and limiting the sliding plate 17 is arranged at the top of the installation groove 16. A first sliding groove 19 is opened inside the pressing plate 18. Symmetrically arranged on the outer side surface of the top end of the sliding plate 17 are limiting convex rods 20 that are correspondingly engaged with the first sliding groove 19. A first fixing bolt 22 is threadedly connected to the middle outer part of the end of the sliding plate 17. A pressing block 23 is welded and fixed to the outer side of the middle of the first fixing bolt 22. The pressing block 23 is located outside the pressing plate 18. Symmetrically embedded on the inner side surface of the top end of the sliding plate 17 are balls 24. The balls 24 are rollingly installed on the inner side surface of the sliding plate 17. The outer side of the balls 24 is in contact with a second sliding groove 25 opened at the bottom of the installation groove 16. Symmetrically installed on the inner side surface of the end of the sliding plate 17 are limiting rings 26. The second telescopic rod 27 is inserted through the limiting rings 26. A second fixing bolt 28 for fixing the second telescopic rod 27 is arranged at the middle outer side of the limiting rings 26.

[0024] In a specific application scenario, when the support rod 2 is opened at the bottom of the fixing frame 1, the bottom end of the support rod 2 approaches the ground. Slide the sliding plate 17 inside the installation groove 16 so that the sliding plate 17 moves to the bottom end of the installation groove 16. Move the automotive parts to the surface of the sliding plate 17. Slide the sliding plate 17 inside the installation groove 16 towards the fixing frame 1, so that the automotive parts on the surface of the sliding plate 17 move to the inside of the limiting seat 37 for limiting. Among them, the top end of the sliding plate 17 is slidably connected inside the first sliding groove 19 on the inner side of the pressing plate 18 through the limiting convex rod 20 for limiting. And balls 24 are rollingly arranged on the inner side of the top end of the sliding plate 17. The sliding of the sliding plate 17 can be kept stable through the sliding of the balls 24 and the second sliding groove 25. And by screwing in the first fixing bolt 22 at the end of the connecting table 21, it is convenient for the first fixing bolt 22 to be squeezed between the pressing block 23 and the pressing plate 18, which can limit the sliding plate 17. And a second telescopic rod 27 that can be telescoped inside the limiting ring 26 is arranged at the rear side of the sliding plate 17. It is convenient to fix the second telescopic rod 27 and the limiting ring 26 through the second fixing bolt 28 to limit the distance between the front and rear sliding plates 17 and adapt to automotive parts of different widths.

[0025] Adopting the above technical solution: It is convenient to adjust to different automotive parts through the expansion and contraction between the sliding plate 17 and the second telescopic rod 27, and through the sliding of the sliding plate 17 on the inner side of the expanded support rod 2, it is convenient to slide the automotive parts upward on the left or right side, so as to quickly fix and use the automotive parts.

[0026] Among them: As Figures 1 - 4 and Figure 7 shown in, the fixed frame 29 is integrally arranged in the middle of the fixed bracket 1. An adjusting mechanism is arranged inside the fixed frame 29. The inside of the fixed frame 29 is connected to the limit seat 37 through the adjusting mechanism. The limit seat 37 is of a cylindrical structure. A limit cover 38 is slidably installed on the top of the limit seat 37. A back plate 30 is integrally fixed on the outer side surface of the fixed frame 29. Third sliding grooves 31 are opened on the top and bottom end faces of the fixed frame 29. Sliders 32 are slidably installed inside the third sliding grooves 31. An adjusting rod 33 is rotatably installed in the middle of the inner side of the slider 32. A vertical rod 34 vertically connected to the inner side of the slider 32 is arranged on the outer side of the adjusting rod 33. An adjusting block 35 is slidably connected to the outer side of the vertical rod 34. A handle rod 36 is installed at the top end of the adjusting rod 33. A limit seat 37 is installed at the top end of the adjusting block 35. The bottom of the limit seat 37 protrudes outward in an arc structure. A limit cover 38 with the same outer diameter as it is slidably installed on the top of the limit seat 37. Third fixing bolts 41 are symmetrically connected to the outer side of the limit cover 38. A fourth sliding groove 39 is opened on the outer surface of the limit seat 37. A clamping block 40 corresponding to the fourth sliding groove 39 is arranged on the inner side of the limit cover 38.

[0027] In a specific application scenario, by sliding the slider 32 inside the third sliding groove 31 opened on the side of the fixed frame 29, the left and right positions of the limit seat 37 can be adjusted. By rotating the adjusting rod 33 with the handle rod 36, the adjusting block 35 can be driven to slide up and down on the outer side of the vertical rod 34, so as to adjust the height position of the limit seat 37, so as to adapt to the use of automotive parts with different curvatures through the position adjustment of the limit seats 37 on the front and rear sides. At the same time, the bottom of the limit seat 37 protrudes outward in an arc structure, which can stably carry the automotive parts. And by sliding the limit cover 38 outward on the top of the limit seat 37, the limit cover 38 can be covered above the automotive parts on the limit seat 37. By screwing in the third fixing bolt 41 on the top of the limit cover 38, the automotive parts are limited, so as to be stably welded and used.

[0028] Adopting the above technical solution: It is convenient to adjust to different automotive parts through the position adjustment of the limit seat 37, and through the sliding between the limit seat 37 and the limit cover 38, it is convenient to quickly limit the automotive parts, so as to stably install the automotive parts, thereby improving the welding efficiency.

[0029] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention; the content not described in detail in this specification belongs to the prior art well-known to those of ordinary skill in the art. In addition, the directional terms such as up, down, left, right, front, and back in the text only represent their relative positions rather than absolute positions.

[0030] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be elaborated here.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for 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 welding auxiliary device for automotive parts, characterized in that Comprising: A fixing frame (1), at both ends of the bottom surface of the fixing frame (1), support rods (2) are symmetrically and rotatably connected. At the bottom end of the support rod (2), a roller (4) for sliding at its bottom is provided; Among them, a sleeve rod (5) is fixedly installed on the outer side of the bottom end of the support rod (2). A first telescopic rod (6) is telescopically connected inside the sleeve rod (5). Inside the sleeve rod (5), a pulling mechanism capable of regulating the opening angle of the support rod (2) is provided; A sliding plate (17), the top end of the sliding plate (17) is slidably connected inside the support rod (2), and a second telescopic rod (27) is telescopically installed inside the end of the sliding plate (17); A fixing frame (29), the fixing frame (29) is integrally arranged in the middle of the fixing frame (1). An adjusting mechanism is arranged inside the fixing frame (29). The inside of the fixing frame (29) is connected to a limit seat (37) through the adjusting mechanism. The limit seat (37) is a cylindrical structure, and a limit cover (38) is slidably installed on the top of the limit seat (37).

2. The welding auxiliary device for automotive parts according to claim 1, wherein: The top end of the support rod (2) is correspondingly rotatably connected to the bottom surface of the fixing frame (1) through a connecting block (3). The inner side of the top end of the connecting block (3) is a flat structure, and the rotation angle range of the support rod (2) is 0 - 90°; 3. An auxiliary device for welding automotive parts according to claim 1, characterized in that: The pulling mechanism includes: A housing (7), the housing (7) is fixedly installed inside the sleeve rod (5), and a rotating shaft (8) is rotatably installed inside the housing (7); A pulling rope (9), the top end of the pulling rope (9) is wound and connected to the outer side of the rotating shaft (8), and the end of the pulling rope (9) passes through a wire releasing hole (10) opened on the surface of the housing (7) and is connected to a limit head (11); A clamping head (12), the clamping head (12) is oppositely arranged with the housing (7). A clamping groove (13) capable of correspondingly assembling with the limit head (11) is opened inside the clamping head (12); 4. An auxiliary device for welding automotive parts according to claim 3, wherein: The top end of the rotating shaft (8) is integrally and fixedly installed with a worm gear (14). A worm (15) is meshed and connected to the outer side of the worm gear (14), and the worm (15) is rotatably installed inside the housing (7); 5. An auxiliary device for welding automotive parts according to claim 1, characterized in that: An installation groove (16) is recessed on the outer side surface of the support rod (2). A sliding plate (17) is arranged inside the installation groove (16). A pressing plate (18) for pressing and limiting the sliding plate (17) is arranged at the top of the installation groove (16). A first sliding groove (19) is opened inside the pressing plate (18); Among them, limiting convex rods (20) correspondingly engaged with the first sliding groove (19) are symmetrically opened on the outer side surface of the top end of the sliding plate (17). A first fixing bolt (22) is threadedly connected to the middle outer side of the end of the sliding plate (17). A pressing block (23) is welded and fixed to the outer side of the middle of the first fixing bolt (22). The pressing block (23) is located outside the pressing plate (18).

6. The welding auxiliary device for automotive parts according to claim 5, wherein: On the inner side of the top end of the sliding plate (17), balls (24) are symmetrically embedded. The balls (24) are rotatably installed on the inner side of the sliding plate (17), and the outer sides of the balls (24) are in contact with the second sliding groove (25) opened at the bottom of the installation groove (16).

7. An auxiliary device for welding automotive parts according to claim 1, characterized in that: On the inner side of the end of the sliding plate (17), limiting rings (26) are symmetrically installed up and down. A second telescopic rod (27) is inserted through the inside of the limiting rings (26), and a second fixing bolt (28) for fixing the second telescopic rod (27) is arranged in the middle of the outer side of the limiting rings (26).

8. An auxiliary device for welding automotive parts according to claim 1, characterized in that: On the outer side of the fixed frame (29), a back plate (30) is integrally fixed. Third sliding grooves (31) are opened at the top and bottom end faces of the fixed frame (29). Sliders (32) are slidably installed inside the third sliding grooves (31). An adjusting rod (33) is rotatably installed in the middle of the inner side of the slider (32). A vertical rod (34) vertically connected to the inner side of the slider (32) is arranged on the outer side of the adjusting rod (33). An adjusting block (35) is slidably connected to the outer side of the vertical rod (34). A handle rod (36) is installed at the top end of the adjusting rod (33).

9. An auxiliary device for welding automotive parts according to claim 8, characterized in that: A limiting seat (37) is installed at the top end of the adjusting block (35). The bottom of the limiting seat (37) protrudes outward in an arc shape. A limiting cover (38) with the same outer diameter as it is slidably installed on the top of the limiting seat (37). Third fixing bolts (41) are symmetrically connected to the outer side of the limiting cover (38); Among them, a fourth sliding groove (39) is opened on the outer surface of the limiting seat (37), and a clamping block (40) corresponding to and engaging with the fourth sliding groove (39) is arranged on the inner side of the limiting cover (38).

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