CN116214041A

CN116214041A - Auxiliary equipment for welding automobile sheet metal

Info

Publication number: CN116214041A
Application number: CN202310134099.3A
Authority: CN
Inventors: 刘兴尧; 袁杰; 邵新忠; 赵明; 赵启明; 陈家勇; 贾超超; 黄政杰; 王金泰; 常瑞; 李晓东; 陈科羽; 朱玉
Original assignee: Sichuan Vocational and Technical College Communications
Current assignee: Sichuan Vocational and Technical College Communications
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-06-06

Abstract

The invention discloses auxiliary equipment for welding automobile sheet metal, which comprises a base, a mounting rod, a frame body, a plurality of sliding columns and a spacing adjusting mechanism, wherein the mounting rod is arranged on the base; support plates are fixed on two sides of the top of the base; the mounting rod is horizontally erected between the two support plates; the frame body is arranged above the mounting rod, and the bottom of the frame body is fixed with the top of the mounting rod through a connecting rod; the sliding columns are clamped in the frame body in a sliding way, and each sliding column is provided with a clamping assembly; the output end of the interval adjusting mechanism is connected with a plurality of sliding columns and used for adjusting the interval between the sliding columns. According to the invention, the distance between the clamping assemblies can be correspondingly adjusted through the distance adjusting mechanism according to the positions of the cracks of the bumper, the positions of the cracks of the bumper are exposed, the welding is convenient for maintenance personnel, and the clamping assemblies uniformly clamp the bumper at the same time, so that the stress of the clamping assemblies is uniform, the surfaces of two sides of the cracks of the bumper can be kept flush, and the welding effect is prevented from being influenced.

Description

Auxiliary equipment for welding automobile sheet metal

Technical Field

The invention relates to the technical field of automobile maintenance, in particular to auxiliary equipment for welding automobile sheet metal.

Background

The automobile sheet metal is a technical means for repairing automobiles, and the automobile sheet metal is equal to the automobile sheet metal repair in the aspect that the automobile body is to be repaired after the automobile collides, namely all the work except the spraying work for carrying out corrosion prevention and decoration on the automobile body. Such as analysis of automobile body damage, measurement of automobile body, shaping of automobile body metal plates, stretching and correcting, stress relief welding, assembly of automobile body accessories, adjustment and the like.

The automobile bumper is a safety device for absorbing and slowing down external impact force and protecting the front and rear parts of an automobile body, after an automobile collides, the automobile bumper can buffer the collision force so as to protect a driver, the automobile bumper is damaged and cracked after colliding, welding repair is needed to be carried out on the cracks, when the automobile bumper is seriously damaged, the bumper needs to be disassembled so as to weld the inside of the bumper, because the outer surface of the bumper is welded singly, the defect that a plastic welding rod cannot polish after welding is finished is caused, the disassembled bumper needs to be fixed in an auxiliary mode through a clamp, and a maintainer is convenient to weld repair.

The traditional anchor clamps generally are equipped with two sets of, carry out the centre gripping to the both sides of bumper, and the interval between most two sets of anchor clamps can't be adjusted, when some cracks appear in the centre gripping position, can exist anchor clamps and shelter from thereby lead to influencing the shortcoming of welding repair process to bumper crack department, but also only adopt two sets of anchor clamps to fix the bumper both sides, can lead to the uneven surface atress of bumper, especially the clamping face of crack department both sides is difficult to guarantee the parallel and level to can lead to the deformation in the welding process, thereby lead to the fact the influence to the welding effect.

Disclosure of Invention

The invention aims to provide auxiliary equipment for welding automobile sheet metal, which solves the problems of the background technology.

The technical scheme of the invention is as follows: an auxiliary device for welding automobile sheet metal comprises a base, a mounting rod, a frame body, a plurality of sliding columns and a spacing adjusting mechanism; support plates are fixed on two sides of the top of the base; the mounting rod is horizontally erected between the two support plates; the frame body is arranged above the mounting rod, and the bottom of the frame body is fixed with the top of the mounting rod through a connecting rod; a plurality of sliding columns are clamped in the frame body in a sliding way, and each sliding column is provided with a clamping assembly; the output end of the interval adjusting mechanism is connected with the sliding columns and used for adjusting the interval between the sliding columns.

Preferably, the interval adjusting mechanism comprises a first chute, a moving plate and a lifting assembly; the first sliding groove is formed in the top of the frame body and is arranged along the length direction of the frame body, and penetrates through the frame body; the movable plate is vertically and slidably clamped in the first chute, a plurality of guide grooves are formed in the movable plate, the guide grooves are obliquely arranged, the slope of each guide groove is sequentially reduced from the center of the movable plate to the edge of the movable plate, and one ends of the slide columns are correspondingly and slidably clamped in the guide grooves one by one; the lifting component is arranged on the frame body, and the output end of the lifting component is connected with the moving plate and used for driving the moving plate to vertically move.

Preferably, the lifting assembly comprises a rotating shaft, a first gear and a first rack; the rotating shaft is arranged in the frame body and is rotationally connected with the side wall of the frame body, one end of the rotating shaft extends out of the frame body, and a first self-locking hand wheel is fixedly sleeved outside the frame body; the first gear is sleeved and fixed on a shaft section of the rotating shaft positioned in the frame body; the first rack is vertically fixed on the moving plate and meshed with the first gear.

Preferably, the movable plate is provided with two limiting blocks on the side walls of the sliding columns, and the two limiting blocks are respectively positioned on the upper side and the lower side of the frame body.

Preferably, the clamping assembly comprises an internal thread sleeve, a second self-locking hand wheel, a screw rod, a plurality of L-shaped connecting blocks, a plurality of clamping blocks and a plurality of reset springs; the internal thread sleeve is vertically arranged, and the lower end of the internal thread sleeve is rotationally connected with the top of the frame body; the second self-locking hand wheel is sleeved and fixed at the upper end of the internal thread sleeve; the screw rod is vertically arranged, the upper end of the screw rod is sleeved in the internal thread sleeve and is in threaded connection with the internal thread sleeve, and a pressing block which is horizontally arranged is fixed below the lower end of the screw rod extending to the frame body; the vertical ends of the L-shaped connecting blocks are slidably clamped in a second sliding groove, the second sliding groove is formed in the top of the frame body and is positioned between the first sliding groove and the internal thread sleeve, the second sliding groove is arranged in parallel with the first sliding groove, the second sliding groove penetrates through the frame body, one ends of the sliding columns, far away from the moving plate, are in one-to-one correspondence with the vertical end side walls of the L-shaped connecting blocks, and a third sliding groove which is vertically arranged is formed in the side wall of each L-shaped connecting block, facing away from the sliding column; the clamping blocks are horizontally arranged and positioned below the pressing blocks, and the first sections of the clamping blocks are correspondingly and slidably clamped in the third sliding grooves one by one; the plurality of reset springs are vertically arranged in the plurality of third sliding grooves in a one-to-one correspondence mode, the lower end of each reset spring is connected with the top of the clamping block, and the upper end of each reset spring is connected with the inner top surface of the third sliding groove.

Preferably, the installation pole is the cylinder, be equipped with angle adjustment mechanism in the backup pad, angle adjustment mechanism's output is connected with the installation pole for adjust the circumference angle of installation pole.

Preferably, the angle adjusting mechanism comprises a mounting groove, a second gear, a second rack and a linear displacement assembly; the mounting groove is formed in the side wall of one of the support plates and is arranged along the width direction of the support plate, and the groove walls on two sides of the mounting groove are provided with cylindrical grooves; the second gear is vertically arranged in the mounting groove, turntables are fixed on the side walls of the two sides of the second gear, the two turntables are correspondingly clamped in the two cylindrical grooves in a sliding way respectively and can rotate in the cylindrical grooves, one end of the mounting rod extends into the cylindrical grooves to be fixed with the center of the side wall of one of the turntables, and the other end of the mounting rod is rotationally connected with the side wall of the other supporting plate through a bearing; the second rack is arranged in the mounting groove and positioned below the second gear, and the second rack is meshed with the second gear; the linear displacement assembly is arranged on a supporting plate provided with a mounting groove, the output end of the linear displacement assembly is fixed with the second rack, and the linear displacement assembly is used for driving the second rack to move in the mounting groove.

Preferably, the linear displacement assembly is an electric push rod or a hydraulic cylinder or an air cylinder.

Preferably, a chip collecting groove is formed in the top of the base.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the distance between the clamping assemblies can be correspondingly adjusted through the distance adjusting mechanism according to the positions of the cracks of the bumper, so that the positions of the cracks of the bumper are exposed, the welding is convenient for maintenance personnel, the plurality of clamping assemblies uniformly clamp the bumper at the same time, the stress is uniform, the surfaces on two sides of the cracks of the bumper can be ensured to be kept flush, the welding effect is prevented from being influenced, and meanwhile, the bumpers with different sizes can be clamped and fixed through the plurality of clamping assemblies.

2. According to the invention, the angle of the mounting rod can be adjusted through the arranged angle adjusting mechanism, and then the bumper is driven to overturn under the cooperation of the clamping assembly, so that the bumper can be overturned to an angle convenient for welding.

Drawings

FIG. 1 is a schematic diagram of a front view of the present invention;

FIG. 2 is a schematic view of a partial enlarged structure of the portion A in FIG. 1 according to the present invention;

FIG. 3 is a schematic view of a partially enlarged structure of the present invention at B in FIG. 1;

FIG. 4 is a schematic cross-sectional view of the invention at C-C of FIG. 1;

FIG. 5 is a schematic view of a partially enlarged structure of the invention at D in FIG. 4;

FIG. 6 is a schematic top view of the present invention;

fig. 7 is a schematic structural view of the angle adjusting mechanism of the present invention driving the mounting rod to rotate.

Detailed Description

The following describes in detail the embodiments of the present invention with reference to fig. 1 to 7. In the description of the invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

Example 1

As shown in fig. 1 to 6, an embodiment of the present invention provides an auxiliary device for welding sheet metal of an automobile, which includes a base 1, a mounting rod 2, a frame 3, a plurality of slide posts 4 and a spacing adjustment mechanism; support plates 101 are fixed on two sides of the top of the base 1; the mounting rod 2 is horizontally erected between the two support plates 101; the frame body 3 is arranged above the mounting rod 2, and the bottom of the frame body 3 is fixed with the top of the mounting rod 2 through a connecting rod 31; a plurality of slide columns 4 are slidably clamped in the frame body 3, and each slide column 4 is provided with a clamping component; the output end of the spacing adjustment mechanism is connected with a plurality of slide posts 4 for adjusting the spacing between the slide posts 4.

When welding the repair to the bumper that dismantles, come corresponding interval between a plurality of slide posts 4 through interval adjustment mechanism according to the position of bumper crackle, and then adjust the interval of a plurality of clamping assembly, expose the position of bumper crackle department, be convenient for maintenance personal welds to a plurality of clamping assembly evenly centre gripping the bumper simultaneously, make its atress even, can guarantee that bumper crackle department both sides surface keeps the parallel and level, avoid influencing the welding effect, and because evenly centre gripping the bumper through a plurality of clamping assembly, therefore can carry out the centre gripping to the bumper of equidimension.

Example 2

The present embodiment defines a specific structure of a pitch adjustment mechanism on the basis of embodiment 1, and as shown in fig. 1, 3, 4 and 5, the pitch adjustment mechanism includes a first chute 51, a moving plate 52 and a lifting assembly; the first sliding groove 51 is formed in the top of the frame body 3 and is arranged along the length direction of the frame body 3, and the first sliding groove 51 penetrates through the frame body 3; the movable plate 52 is vertically and slidably clamped in the first chute 51, a plurality of guide grooves 53 are formed in the movable plate 52, the guide grooves 53 are obliquely arranged, the slope of each guide groove 53 is sequentially reduced from the center of the movable plate 52 to the edge of the movable plate 52, and one ends of the slide columns 4 are slidably clamped in the guide grooves 53 in a one-to-one correspondence manner; the lifting assembly is arranged on the frame body 3, and the output end of the lifting assembly is connected with the moving plate 52 and used for driving the moving plate 52 to vertically move.

When the interval of a plurality of slide columns 4 is adjusted through interval adjustment mechanism, drive the vertical removal of movable plate 52 through control lifting unit, the in-process of vertical removal of movable plate 52 can extrude a plurality of slide columns 4 through a plurality of guide slots 53, because a plurality of slide columns 4 slip clamps in framework 3, consequently the guide slot 53 extrusion slide column 4 that sets up through the slope can make slide column 4 horizontal migration in framework 3, can make the interval increase between a plurality of slide columns 4 when movable plate 52 descends, can make the interval between a plurality of slide columns 4 narrow when movable plate 52 rises.

Specifically, the lifting assembly includes a rotating shaft 54, a first gear 56, and a first rack 57; the rotating shaft 54 is arranged in the frame body 3 and is rotationally connected with the side wall of the frame body 3, one end of the rotating shaft 54 extends to the outside of the frame body 3, and a first self-locking hand wheel 55 is sleeved and fixed; the first gear 56 is sleeved and fixed on a shaft section of the rotating shaft 54 positioned in the frame body 3; the first rack gear 57 is vertically fixed to the moving plate 52, and the first rack gear 57 is engaged with the first gear 56.

When the moving plate 52 is driven to ascend or descend through the lifting assembly, the rotating shaft 54 and the first gear 56 are driven to rotate through the first self-locking hand wheel 55, and because the first gear 56 is meshed with the first rack 57, the first rack 57 is driven to vertically move when the first gear 56 rotates, the moving plate 52 is driven to vertically move, the ascending or descending process of the moving plate 52 can be controlled through controlling the direction of the first self-locking hand wheel 55, when the moving plate 52 moves to a required position, the rotating shaft 54 is locked through the first self-locking hand wheel 55, the rotating shaft 54 is prevented from rotating, and the moving plate 52 is kept unchanged at the current position.

Further, in order to avoid that the first gear 56 is separated from the first rack 57 in the process of driving the first rack 57 to lift by rotating the first gear 56, two limiting blocks 6 are arranged on the side walls of the moving plate 52, which are opposite to the sliding columns 4, and the two limiting blocks 6 are respectively positioned on the upper side and the lower side of the frame body 3, and limiting positions of the moving plate 52, which are raised or lowered, can be limited by the two limiting blocks 6, so that the first gear 56 is guaranteed to be always meshed with the first rack 57.

Example 3

The specific structure of the clamping assembly is limited on the basis of embodiment 2, and as shown in fig. 1, 3, 4 and 6, the clamping assembly comprises an internal threaded sleeve 71, a second self-locking hand wheel 72, a screw 73, a plurality of L-shaped connecting blocks 75, a plurality of clamping blocks 78 and a plurality of return springs 79; the internal thread sleeve 71 is vertically arranged, and the lower end of the internal thread sleeve 71 is rotationally connected with the top of the frame body 3; the second self-locking hand wheel 72 is sleeved and fixed at the upper end of the internal thread sleeve 71; the screw rod 73 is vertically arranged, the upper end of the screw rod 73 is sleeved in the internal thread sleeve 71 and is in threaded connection with the internal thread sleeve 71, and a pressing block 74 which is horizontally arranged is fixed below the lower end of the screw rod 73 extending to the frame body 3; the vertical ends of the plurality of L-shaped connecting blocks 75 are slidably clamped in the second sliding grooves 76, the second sliding grooves 76 are formed in the top of the frame body 3 and are positioned between the first sliding grooves 51 and the internal thread sleeves 71, the second sliding grooves 76 are arranged in parallel with the first sliding grooves 51, the second sliding grooves 76 penetrate through the frame body 3, one ends of the plurality of sliding columns 4, which are far away from the moving plate 52, are in one-to-one correspondence to the vertical end side walls of the plurality of L-shaped connecting blocks 75, and a third sliding groove 77 which is vertically arranged is formed in the side wall of each L-shaped connecting block 75, which is opposite to the sliding column 4; the plurality of clamping blocks 78 are horizontally arranged and positioned below the pressing blocks 74, and the first sections of the plurality of clamping blocks 78 are correspondingly and slidably clamped in the plurality of third sliding grooves 77 one by one; the plurality of return springs 79 are vertically arranged in the plurality of third sliding grooves 77 in a one-to-one correspondence manner, the lower end of each return spring 79 is connected with the top of the clamping block 78, and the upper end of each return spring 79 is connected with the inner top surface of the third sliding groove 77.

When the bumper is clamped and fixed through the clamping assembly, the side edges of the bumper are firstly placed between the clamping blocks 78 and the L-shaped connecting blocks 75, then the second self-locking hand wheel 72 is rotated to drive the inner threaded sleeve 71 to rotate, the side wall of the pressing block 74 fixed at the lower end of the screw rod 73 is propped against the side wall of the L-shaped connecting blocks 75, so that the screw rod 73 can not rotate, the inner threaded sleeve 71 can rotate, the screw rod 73 is driven to move in the vertical direction through the threads of the pressing rod 73 when the inner threaded sleeve 71 rotates, the pressing block 74 is driven to descend through the screw rod 73, the clamping blocks 78 are extruded in the descending process of the pressing block 74 to drive the clamping blocks 78 to move downwards, the clamping blocks 78 are matched with the horizontal ends of the L-shaped connecting blocks 75, the side wall of the bumper is clamped and fixed, a maintainer can weld the bumper conveniently, the second self-locking hand wheel 72 is rotated in the reverse direction to drive the pressing block 74 to ascend, the clamping blocks 78 can automatically ascend under the elastic acting force of the reset spring 79, and the clamping blocks 78 can be loosened, and the maintainer can conveniently take down the bumper.

Example 4

In this embodiment, on the basis of embodiment 1, in order to adjust the angle of the clamped bumper according to the welding requirement, the mounting rod 2 is set to be a column, and the supporting plate 101 is provided with an angle adjusting mechanism, and an output end of the angle adjusting mechanism is connected with the mounting rod 2 for adjusting the circumferential angle of the mounting rod 2.

Specifically, as shown in fig. 1, 4, 6 and 7, the angle adjusting mechanism includes a mounting groove 81, a second gear 83, a second rack 85 and a linear displacement assembly 86; the mounting groove 81 is formed in the side wall of one of the support plates 101 and is arranged along the width direction of the support plate 101, and the groove walls on two sides of the mounting groove 81 are provided with the column-shaped grooves 82; the second gear 83 is vertically arranged in the mounting groove 81, turntables 84 are fixed on the side walls of the two sides of the second gear 83, the two turntables 84 are respectively correspondingly and slidably clamped in the two cylindrical grooves 82 and can rotate in the cylindrical grooves 82, one end of the mounting rod 2 extends into the cylindrical grooves 82 to be fixed with the center of the side wall of one turntable 84, and the other end of the mounting rod 2 is rotatably connected with the side wall of the other supporting plate 101 through a bearing; the second rack 85 is arranged in the mounting groove 81 and is positioned below the second gear 83, and the second rack 85 is meshed with the second gear 83; the linear displacement assembly 86 is disposed on the support plate 101 provided with the mounting groove 81, an output end of the linear displacement assembly 86 is fixed with the second rack 85, and the linear displacement assembly 86 is used for driving the second rack 85 to move in the mounting groove 81.

When adjusting the angle of installation pole 2 through angle adjustment mechanism, control linear displacement subassembly drives second rack 85 and removes, because second rack 85 and second gear 83 meshing, can drive second gear 83 and rotate when consequently second rack 85 removes, and second gear 83 rotates and can drive carousel 84 and rotate, and then drives installation pole 2 and rotate to under clamping assembly's cooperation, drive the bumper upset to the angle that makes things convenient for the welding.

Further, as alternative embodiments of the linear displacement assembly 86, in this example, the linear displacement assembly 86 may be an electric push rod or a hydraulic cylinder or an air cylinder.

Further, as shown in fig. 1 and 6, in order to recover chips generated during welding of the bumper, a chip collecting groove 91 is formed at the top of the base 1.

The foregoing disclosure is only illustrative of the preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any variations within the scope of the present invention will be apparent to those skilled in the art.

Claims

1. An automobile sheet metal welding auxiliary device, comprising:

the base (1) is provided with support plates (101) fixed on two sides of the top;

the mounting rod (2) is horizontally erected between the two support plates (101);

the frame body (3) is arranged above the mounting rod (2), and the bottom of the frame body (3) is fixed with the top of the mounting rod (2) through a connecting rod (31);

a plurality of sliding columns (4) are slidably clamped in the frame body (3), and each sliding column (4) is provided with a clamping assembly;

and the output end of the interval adjusting mechanism is connected with the sliding columns (4) and is used for adjusting the interval between the sliding columns (4).

2. The automotive sheet metal welding auxiliary device according to claim 1, wherein the pitch adjustment mechanism comprises:

the first sliding groove (51) is formed in the top of the frame body (3) and is arranged along the length direction of the frame body (3), and the first sliding groove (51) penetrates through the frame body (3);

the movable plate (52) is vertically and slidably clamped in the first sliding groove (51), a plurality of guide grooves (53) are formed in the movable plate (52), the guide grooves (53) are obliquely arranged, the slope of each guide groove (53) is sequentially reduced from the center of the movable plate (52) to the edge of the movable plate (52), and one end of each sliding column (4) is slidably clamped in the guide grooves (53) in a one-to-one correspondence manner;

the lifting assembly is arranged on the frame body (3), and the output end of the lifting assembly is connected with the moving plate (52) and used for driving the moving plate (52) to vertically move.

3. The automotive sheet metal welding auxiliary device according to claim 2, wherein the lifting assembly comprises:

the rotating shaft (54) is arranged in the frame body (3) and is rotationally connected with the side wall of the frame body (3), one end of the rotating shaft (54) extends to the outside of the frame body (3), and a first self-locking hand wheel (55) is sleeved and fixed outside the frame body (3);

the first gear (56) is sleeved and fixed on a shaft section of the rotating shaft (54) positioned in the frame body (3);

and a first rack (57) vertically fixed on the moving plate (52), the first rack (57) being engaged with the first gear (56).

4. An automobile sheet metal welding auxiliary device according to claim 3, wherein two limiting blocks (6) are arranged on the side walls of the movable plate (52) opposite to the sliding columns (4), and the two limiting blocks (6) are respectively arranged on the upper side and the lower side of the frame body (3).

5. The automotive sheet metal welding auxiliary device of claim 2, wherein the clamping assembly comprises:

the internal thread sleeve (71) is vertically arranged, and the lower end of the internal thread sleeve (71) is rotationally connected with the top of the frame body (3);

the second self-locking hand wheel (72) is sleeved and fixed at the upper end of the internal thread sleeve (71);

the screw rod (73) is vertically arranged, the upper end of the screw rod (73) is sleeved in the internal thread sleeve (71) and is in threaded connection with the internal thread sleeve (71), and a pressing block (74) which is horizontally arranged is fixed below the frame body (3) and extends from the lower end of the screw rod (73);

the plurality of L-shaped connecting blocks (75) are slidably clamped in the second sliding grooves (76), the second sliding grooves (76) are formed in the top of the frame body (3) and located between the first sliding grooves (51) and the inner threaded sleeves (71), the second sliding grooves (76) are arranged in parallel with the first sliding grooves (51), the second sliding grooves (76) penetrate through the frame body (3), one ends, far away from the moving plate (52), of the plurality of sliding columns (4) are in one-to-one correspondence with the vertical end side walls of the plurality of L-shaped connecting blocks (75) and are fixed, and a third sliding groove (77) which is vertically arranged is formed in the side wall, opposite to the sliding columns (4), of each L-shaped connecting block (75);

the clamping blocks (78) are horizontally arranged and positioned below the pressing blocks (74), and the first sections of the clamping blocks (78) are correspondingly and slidably clamped in the third sliding grooves (77);

the plurality of return springs (79) are vertically arranged in the plurality of third sliding grooves (77) in a one-to-one correspondence mode, the lower end of each return spring (79) is connected with the top of the clamping block (78), and the upper end of each return spring (79) is connected with the inner top surface of the third sliding groove (77).

6. The automobile sheet metal welding auxiliary device according to claim 1, wherein the mounting rod (2) is a column body, an angle adjusting mechanism is arranged on the supporting plate (101), and an output end of the angle adjusting mechanism is connected with the mounting rod (2) and used for adjusting the circumferential angle of the mounting rod (2).

7. The automotive sheet metal welding auxiliary device according to claim 6, wherein the angle adjusting mechanism comprises:

the mounting grooves (81) are formed in the side wall of one of the supporting plates (101) and are arranged along the width direction of the supporting plate (101), and the groove walls on two sides of the mounting grooves (81) are provided with cylindrical grooves (82);

the second gear (83) is vertically arranged in the mounting groove (81), rotary tables (84) are fixed on the side walls of the two sides of the second gear (83), the two rotary tables (84) are correspondingly and slidably clamped in the two cylindrical grooves (82) respectively and can rotate in the cylindrical grooves (82), one end of the mounting rod (2) extends into the cylindrical grooves (82) and is fixed at the center of the side wall of one rotary table (84), and the other end of the mounting rod (2) is rotatably connected with the side wall of the other supporting plate (101) through a bearing;

a second rack (85) arranged in the mounting groove (81) and positioned below the second gear (83), wherein the second rack (85) is meshed with the second gear (83);

the linear displacement assembly (86) is arranged on a supporting plate (101) provided with a mounting groove (81), the output end of the linear displacement assembly (86) is fixed with the second rack (85), and the linear displacement assembly (86) is used for driving the second rack (85) to move in the mounting groove (81).

8. The automotive sheet metal welding auxiliary device according to claim 7, characterized in that the linear displacement assembly (86) is an electric push rod or a hydraulic cylinder or an air cylinder.

9. The automobile sheet metal welding auxiliary device according to claim 1, wherein a chip collecting groove (91) is formed in the top of the base (1).