Welding fixing device for automobile traction mechanism

Abstract

The utility model discloses a welding and fixing device for an automobile traction mechanism, which realizes precise positioning and clamping of a part to be welded and ensures that the size of the mechanism obtained by welding is stable and the deformation is controllable. The clamp comprises a clamp bottom plate and a cross beam supporting seat, first positioning block assemblies are arranged on the two sides of the cross beam supporting seat, a front-back telescopic air cylinder is arranged at the rear end of the cross beam supporting seat, a front convex positioning column is arranged at the front end of the front-back telescopic air cylinder, and a front stop limiting plate is arranged at the front end of the cross beam supporting seat; each group of side supporting seats comprises a bottom height supporting block and a surface profiling positioning plate; the trailer hook positioning mechanism comprises a telescopic material returning air cylinder, a telescopic positioning air cylinder, a rear convex positioning column, a sliding seat and a vertical seat; and the cross beam pressing and attaching mechanism comprises a lifting air cylinder and a pressing and attaching cross rod, and the output end of the upper portion of the lifting air cylinder is connected with the pressing and attaching cross rod through a connecting frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile accessory welding, in particular to automobile traction mechanism welding fixing device. BACKGROUND

[0002] The automobile traction mechanism comprises a crossbeam, two side installation positioning plates and a trailer hook, the two ends of the crossbeam in the length direction are welded with the corresponding side installation positioning plates, a protruding welding plate is preset at the center position of the crossbeam in the length direction, and the protruding welding plate is used for welding the two sides of the trailer hook at the corresponding positions, the existing automobile traction mechanism welding fixing device is fixed by using a magnetic block or a manual clamp, the degree of automation is low, meanwhile, the magnetic block or the manual clamp is used for positioning, the accurate positions of the parts cannot be quickly found, the parts are of different sizes, and many magnetic blocks and manual clamps of different specifications are needed to fix the parts every time, in addition, if the parts are not regular in shape, the magnetic block and the manual clamp cannot be accurately fixed, and in addition, the welded parts cannot be accurately positioned, which can result in unstable sizes of the welded mechanism, uncontrollable deformation and other problems. SUMMARY

[0003] In view of the above problems, the utility model provides an automobile traction mechanism welding fixing device which realizes precise positioning and clamping of the parts to be welded, ensures the stable sizes of the welded mechanism and controllable deformation.

[0004] The automobile traction mechanism welding fixing device comprises the following components.

[0005] A clamp bottom plate,

[0006] A crossbeam supporting seat, two first positioning block assemblies are arranged on the two sides of the crossbeam supporting seat, a front and rear telescopic cylinder is arranged at the rear end of the crossbeam supporting seat, a front protruding positioning column is arranged at the front end of the front and rear telescopic cylinder, the front protruding positioning column is used for inserting and assembling in the center positioning hole of the crossbeam and reliably positioning, and a front stop limiting plate is arranged at the front end of the crossbeam supporting seat;

[0007] Two groups of side supporting seats, each group of side supporting seats comprises a bottom height supporting block and a surface profiling positioning plate, at least two profiling supporting blocks are arranged on the upper surface of the surface profiling positioning plate, a corresponding pressing block is arranged at the upper portion of each group of profiling supporting blocks, the pressing block is connected with a corresponding rotary pressing cylinder, the rotary pressing cylinder is sleeved with the output rod end of the rotary pressing cylinder at the rotating end of the pressing block, and the pressing end of the pressing block is separated from the upper surface of the profiling supporting block when the pressing end is not pressed, so that the side installation positioning plate is placed on the surface profiling positioning plate from top to bottom for positioning and placing;

[0008] The trailer hook positioning mechanism comprises a telescopic material-returning cylinder, a telescopic positioning cylinder, a rear convex positioning column, a sliding seat and a vertical seat, the upper surface of the vertical seat is provided with the sliding seat through a straight rail, the upper surface of the sliding seat is provided with the telescopic positioning cylinder, the lower vertical plate of the vertical seat is fixedly provided with the telescopic material-returning cylinder, the front end of the telescopic material-returning cylinder is fixedly connected with the rear end vertical surface of the sliding seat through a connecting rod and a transmission seat, the rear output end of the telescopic positioning cylinder is fixedly connected with the rear convex positioning column, and the rear convex positioning column is used for sleeving the trailer hook.

[0009] The cross beam pressing mechanism comprises a lifting cylinder and a pressing cross beam, and the upper output end of the lifting cylinder is connected with the pressing cross beam through a connecting frame.

[0010] The rear end of the center position of the length direction of the clamp bottom plate is provided with a cross beam supporting seat, the both sides of the length direction of the clamp bottom plate are respectively provided with side supporting seats, the front end of the center position of the length direction of the clamp bottom plate is provided with the trailer hook positioning mechanism, and the rear end outside of the center position of the clamp bottom plate is provided with the cross beam pressing mechanism.

[0011] Further features are as follows.

[0012] A group of first sensing devices are arranged on both sides of the length direction of the cross beam supporting seat, and the first sensing devices are used for sensing whether the cross beam is placed in place.

[0013] A group of second sensing devices are arranged on the upper surface of each surface profiling positioning plate, and the second sensing devices are used for sensing whether the side installation positioning plate is placed in place.

[0014] The rear end surface of the transmission seat is fixedly provided with a mounting bracket, the mounting bracket is provided with third sensing devices arranged upward, and the third sensing devices are used for sensing whether the trailer hook is placed in place.

[0015] The front end surface of the front stop limiting plate is the rear limiting end surface of the trailer hook, which ensures that the position of the trailer hook is stable and reliable.

[0016] The bottom height supporting block is connected with the surface profiling positioning plate through the adjusting block on the outer side, the connecting bolt on the adjusting block adjusts the lateral position of the surface profiling positioning plate through the tightness, so that the lateral position can be adjusted, the manufacturing precision can be relatively reduced, and the manufacturing cost is reduced.

[0017] The lifting cylinder is fixedly connected with the cross beam supporting seat through the connecting plate, so that the positioning connection is stable and reliable.

[0018] The first positioning block assembly comprises a bottom supporting plate and a side profiling guide block, which enables the setting of the cross beam installation side profiling guide block to be arranged, so that the placement position of the cross beam is stable and reliable.

[0019] After the above technical scheme, firstly, the whole device needs to be connected to the power supply and the gas source, the pressing end of the pressing block is separated from the upper surface position of the profiling support block, the cross beam is placed to the cross beam support seat, and the corresponding position of the cross beam is placed in the corresponding area of the first positioning block assembly, the side installation positioning plates on both sides are placed from top to bottom on the profiling support block, the welding holes are inserted into the corresponding end of the cross beam, and the side installation positioning plates can be reliably pressed and attached to all the profiling support blocks, the telescopic positioning cylinder is extended, so that the trailer hook is arranged on the rear convex positioning column, the rotary pressing cylinder is actuated to press and attach the side installation positioning plates on both sides, the front and rear telescopic cylinders are actuated to make the front convex positioning column inserted into the center positioning hole of the cross beam, and the lifting cylinder drives the pressing cross bar to press and attach the cross beam, so that the positions of the cross beam and the side installation positioning plates are stable and reliable, then the telescopic pushing cylinder is extended, so that the trailer hook is inserted into the corresponding position of the front end of the cross beam, so that the assembly positions of the trailer hook, the cross beam and the side installation positioning plates are stable and reliable, then the welding mechanism is automatically welded, after the welding is completed, the cylinders are reset, and the automobile traction mechanism which has been welded is removed, the device is simple to operate, does not need complex operation, has low requirement on the operator, and is high in safety and production efficiency; the device realizes precise positioning and clamping on the parts to be welded, ensures that the size of the mechanism obtained by welding is stable, and the deformation amount is controllable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view structure diagram of the utility model Figure 1 ;

[0021] Figure 2 It is a perspective view structure diagram of the utility model Figure 2 ;

[0022] Figure 3 It is a perspective view of the utility model provided with an automobile traction mechanism

[0023] The names corresponding to the serial numbers in the drawing are as follows:

[0024] Cross beam 1, convex welding plate 101, side installation positioning plate 2, welding hole 201, trailer hook 3

[0025] Clamp base plate 10, beam support seat 20, front and rear telescopic cylinder 21, front convex positioning column 22, front stop limiting plate 23, first sensing device 24, side support seat 30, bottom height support block 31, surface profiling positioning plate 32, profiling support block 33, pressing block 34, rotating end 341, pressing end 342, rotary pressing cylinder 35, output rod end 351, second sensing device 36, adjusting block 37, connecting bolt 38, trailer hook positioning mechanism 40, telescopic material withdrawing cylinder 41, telescopic positioning cylinder 42, rear convex positioning column 43, sliding seat 44, vertical seat 45, lower vertical plate 451, linear rail 46, guide seat 47, connecting rod 48, transmission seat 49, beam pressing mechanism 50, lifting cylinder 51, pressing cross bar 52, connecting frame 53, connecting plate 54, mounting bracket 60, third sensing device 61, first positioning block assembly 70, bottom support plate 71, side profiling guide block 72. DETAILED DESCRIPTION

[0026] Automobile traction mechanism welding fixing device, see Figures 1-3 , which comprises a clamp base plate 10, a beam support seat 20, two groups of side support seats 30, a trailer hook positioning mechanism 40, and a beam pressing mechanism 50.

[0027] The rear end of the length direction center position of the clamp base plate 10 is provided with the beam support seat 20, and the two side positions of the length direction of the clamp base plate 10 are respectively provided with the side support seat 30, the two groups of side support seats 30 are symmetrically arranged, the front end of the length direction center position of the clamp base plate 10 is provided with the trailer hook positioning mechanism 40, and the outer side of the rear end of the center position of the clamp base plate 10 is provided with the beam pressing mechanism 50.

[0028] The two sides of the beam support seat 20 are provided with the first positioning block assembly 70, the first positioning block assembly 70 comprises a bottom support plate 71 and a side profiling guide block 72, which enables the beam 1 to be arranged along the setting of the side profiling guide block 72 during installation, ensuring that the placement position of the beam 1 is stable and reliable, the rear end of the beam support seat is provided with the front and rear telescopic cylinder 21, the front end of the front and rear telescopic cylinder 21 is provided with the front convex positioning column 22, the front convex positioning column 22 is used for inserting and positioning in the center positioning hole of the beam 1, and the front end of the beam support seat 20 is provided with the front stop limiting plate 23.

[0029] Each group of side supporting seat 30 includes bottom height supporting block 31, surface profiling positioning plate 32, the upper surface of surface profiling positioning plate 32 is provided with three groups of profiling support block 33, the upper part of each group of profiling support block 33 is provided with corresponding pressing block 34, pressing block 34 is connected with corresponding rotary pressing cylinder 35, the rotating end 341 of pressing block 34 is sleeved on the output rod end 351 of rotary pressing cylinder 35, the pressing end 342 of pressing block 34 is separated from the upper surface of profiling support block 33 when not pressing, so that side installation positioning plate 2 is placed from top to bottom to surface profiling positioning plate 32 for positioning placement;

[0030] Trailer hook positioning mechanism 40 includes telescopic material returning cylinder 41, telescopic positioning cylinder 42, rear convex positioning column 43, sliding seat 44, vertical seat 45, sliding seat 44 is slidably connected to the upper surface of vertical seat 45 through straight rail 46, the upper surface of sliding seat 44 is provided with telescopic positioning cylinder 41 and guide seat 47, telescopic material returning cylinder 41 is fixed on the lower vertical plate 451 of vertical seat 45, the front end of telescopic material returning cylinder 41 is fixed to the rear end vertical surface of sliding seat 44 through connecting rod 48 and transmission seat 49, the rear output end of telescopic positioning cylinder 42 is fixed to rear convex positioning column, rear convex positioning column 43 is convexly located behind guide hole of guide seat 47, the rear end of rear convex positioning column 43 is protruded for sleeving trailer hook 3;

[0031] Cross beam pressing mechanism 50 includes lifting cylinder 51 and pressing cross beam 52, the upper output end of lifting cylinder 51 is connected to pressing cross beam 52 through connecting frame 53, pressing cross beam 52 is profiled in the corresponding length area of cross beam 1 to ensure reliable pressing.

[0032] In specific implementation, first sensing device 24 is arranged on one side of cross beam supporting seat 20 along the length direction, and first sensing device 24 is used for sensing whether cross beam 1 is placed in place or not;

[0033] Second sensing device 36 is arranged on the upper surface of each surface profiling positioning plate 32, and second sensing device 36 is used for sensing whether side installation positioning plate 2 is placed in place or not;

[0034] Third sensing device 61 is arranged on mounting bracket 60 of rear end surface of transmission seat 49, third sensing device 61 is used for sensing whether trailer hook 3 is placed in place or not;

[0035] The rear limiting end surface of trailer hook 3 is the front end surface of front stop limiting plate 23, which ensures that the position of trailer hook 3 is stable and reliable.

[0036] In the embodiment, the bottom height supporting block 31 is connected with the surface profiling positioning plate 32 through the adjusting block 37 on the outer side, and the connecting bolt 38 on the adjusting block 37 adjusts the lateral position of the surface profiling positioning plate 32 by the tightness, so that the lateral position can be adjusted, the manufacturing precision can be relatively reduced, and the manufacturing cost is reduced.

[0037] The lifting cylinder 51 is fixedly connected with the cross beam supporting seat 20 through the connecting plate 54, and the positioning and connection are stable and reliable.

[0038] The working principle is as follows: first, the whole device needs to be connected with the power supply and the gas source, the pressing end 342 of the pressing block 34 is separated from the upper surface position of the profiling supporting block 33, the cross beam 1 is placed to the cross beam supporting seat 20, and the corresponding position of the cross beam 1 is placed in the corresponding area of the first positioning block assembly 70, the side installation positioning plate 2 on both sides is placed on the profiling supporting block 33 from top to bottom, the welding hole 201 is inserted into the corresponding end of the cross beam 1, and the side installation positioning plate 2 is reliably pressed to all the profiling supporting blocks 33, the telescopic positioning cylinder 42 is extended, the trailer hook 3 is sleeved on the rear convex positioning column 43, the first sensing device, the second sensing device and the third sensing device simultaneously judge whether the product to be welded is missing and whether it is placed in place, the judgment is completed in an instant, then the rotating pressing cylinder 35 acts, the front and rear telescopic cylinder 21 is front-topped, the lifting cylinder 51 drives the pressing cross rod 52 to press down synchronously, then the telescopic pushing cylinder 41 is extended, the trailer hook 3 is inserted into the corresponding position of the front end of the cross beam 1 on both sides of the convex welding plate 101, the assembly position of the trailer hook 3, the cross beam 1 and the side installation positioning plate 2 is stable and reliable, then the welding mechanism automatically welds, after the welding is completed, the various cylinders are reset, and the automobile traction mechanism that has been welded is taken off, the device is simple to operate, does not need complex operation, has low requirement on the operator, and has high safety and production efficiency; the device realizes precise positioning and clamping of the parts to be welded, ensures that the size of the mechanism obtained by welding is stable, and the deformation amount is controllable.

[0039] It is obvious for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0040] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A welding fixture for automotive traction mechanisms, characterized in that, It comprises: Clamp base plate, Crossbeam support seat, the two sides of the crossbeam support seat are provided with a first positioning block assembly, the rear end of the crossbeam support seat is provided with a front and rear telescopic air cylinder, the front end of the front and rear telescopic air cylinder is provided with a front convex positioning column, the front convex positioning column is used for inserting into the center positioning hole of the crossbeam and reliably positioning, the front end of the crossbeam support seat is provided with a front stop limiting plate; Two groups of side support seats, each group of side support seats comprises a bottom height support block and a surface profiling positioning plate, the upper surface of the surface profiling positioning plate is provided with at least two profiling support blocks, the upper part of each group of profiling support blocks is provided with a corresponding pressure block, the pressure block is connected with a corresponding rotary pressure attachment air cylinder, the rotating end of the pressure block is sleeved on the output rod end of the rotary pressure attachment air cylinder, and the pressure attachment end of the pressure block is separated from the upper surface of the profiling support block when not being pressed, so that the side installation positioning plate is placed from top to bottom on the surface profiling positioning plate for positioning. The trailer hook positioning mechanism comprises a telescopic material returning air cylinder, a telescopic positioning air cylinder, a rear convex positioning column, a sliding seat and a vertical seat, the upper surface of the vertical seat is provided with the sliding seat through a straight rail, the upper surface of the sliding seat is provided with the telescopic positioning air cylinder, the lower vertical plate of the vertical seat is fixedly provided with the telescopic material returning air cylinder, the front end of the telescopic material returning air cylinder is fixedly connected with the rear end vertical surface of the sliding seat through a connecting rod and a transmission seat, the rear output end of the telescopic positioning air cylinder is fixedly connected with the rear convex positioning column, and the rear convex positioning column is used for sleeving the trailer hook. And a crossbeam pressure attachment mechanism comprising a lifting air cylinder and a pressure attachment crossbar, the upper output end of the lifting air cylinder is connected with the pressure attachment crossbar through a connecting frame. The rear end of the center position of the length direction of the clamp base plate is provided with the crossbeam support seat, the two side positions of the length direction of the clamp base plate are respectively provided with the side support seat, the front end of the center position of the length direction of the clamp base plate is provided with the trailer hook positioning mechanism, and the rear end outside the center position of the clamp base plate is provided with the crossbeam pressure attachment mechanism.

2. The automotive traction mechanism welding fixture of claim 1, wherein: The crossbeam support seat is respectively provided with a group of first sensing devices on the two sides along the length direction, and the first sensing devices are used for sensing whether the crossbeam is placed in place.

3. The automotive traction mechanism welding fixture of claim 1, wherein: The upper surface of each surface profiling positioning plate is provided with a group of second sensing devices, and the second sensing devices are used for sensing whether the side installation positioning plate is placed in place.

4. The automotive traction mechanism welding fixture of claim 1, wherein: The rear end surface of the transmission seat is fixedly provided with a mounting bracket, the mounting bracket is provided with a third sensing device arranged upward, and the third sensing device is used for sensing whether the trailer hook is placed in place.

5. The automotive traction mechanism welding fixture of claim 1, wherein: The front end surface of the front stop limiting plate is the rear limiting end surface of the trailer hook.

6. The automotive draw mechanism welding fixture of claim 1, wherein: The bottom height support block is connected with the surface profiling positioning plate through the adjusting block on the outer side, and the connecting bolt on the adjusting block adjusts the lateral position of the surface profiling positioning plate through the tightness.

7. The automotive draw mechanism welding fixture of claim 1, wherein: The lifting air cylinder is fixedly connected with the crossbeam support seat through a connecting plate.

8. The automotive draw mechanism welding fixture of claim 1, wherein: The first positioning block assembly comprises a bottom support plate and a side profiling guide block.

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