Welding fixing device for automobile traction mechanism

Abstract

The invention discloses a welding and fixing device for an automobile traction mechanism, which is used for precisely positioning and clamping a part to be welded and ensuring that a mechanism obtained by welding is stable in size and controllable in deformation. 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 invention relates to the technical field of automobile accessory welding, in particular to an automobile traction mechanism welding fixing device. Background Art

[0002] The automobile traction mechanism includes a crossbeam, two side mounting positioning plates, and a trailer hook. The corresponding frontal mounting positioning plates are welded at both ends of the crossbeam in the length direction. A raised welding plate is preset at the center position of the length direction of the crossbeam. The raised welding plate is used to weld the corresponding positions on both sides of the trailer hook. The existing welding and fixing devices for automobile traction mechanisms are all fixed by magnetic blocks or manual clamps, and the degree of automation is low. At the same time, the use of magnetic blocks or manual clamps for positioning cannot quickly find the exact position of each part. At the same time, due to the different sizes of parts, many specifications of magnetic blocks and manual clamps are required for each welding fixation. In addition, if the parts are not of regular shape, the magnetic blocks and manual clamps cannot be accurately fixed. Furthermore, because the welded parts are not accurately positioned, the size of the mechanism obtained by welding will be unstable and the deformation will be uncontrollable. Summary of the invention

[0003] In view of the above problems, the present invention provides a welding fixture for an automobile traction mechanism, which can achieve precise positioning and clamping of the parts to be welded, thereby ensuring that the dimensions of the mechanism obtained by welding are stable and the deformation is controllable.

[0004] The welding fixing device of automobile traction mechanism is characterized in that it comprises:

[0005] Fixture base plate,

[0006] A beam support seat, wherein first positioning block assemblies are arranged on both sides of the beam support seat, a front and rear telescopic cylinder is arranged at the rear end of the beam support seat, a front convex positioning column is arranged at the front end of the front and rear telescopic cylinder, and the front convex positioning column is used to be inserted into the central positioning hole of the beam for reliable positioning, and a front stop limit plate is arranged at the front end of the beam support seat;

[0007] Two groups of side support seats, each group of the side support seats includes 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 pressing block, the pressing block is connected with a corresponding rotary pressing cylinder, the rotating end of the pressing block is sleeved on the output rod end of the rotary pressing cylinder, and the pressing end of the pressing block is detached from the upper surface of the profiling support block when not pressed, so that the side installation positioning plate is placed from top to bottom on the surface profiling positioning plate for positioning and placement;

[0008] The trailer hook positioning mechanism comprises a telescopic material-returning cylinder, a telescopic positioning cylinder, a rear convex positioning column, a slide seat, and a vertical seat. The slide seat is arranged on the upper surface of the vertical seat through a linear track. The telescopic positioning cylinder is arranged on the upper surface of the slide seat. The telescopic material-returning cylinder is fixedly arranged on the lower vertical plate of the vertical seat. The front end of the telescopic material-returning cylinder is fixedly connected to the rear end vertical surface of the slide seat through a connecting rod and a transmission seat. The rear output end of the telescopic positioning cylinder is fixedly connected to the rear convex positioning column. The rear convex positioning column is used to sleeve the trailer hook.

[0009] and a crossbeam pressing mechanism, which comprises a lifting cylinder and a pressing crossbar, wherein the upper output end of the lifting cylinder is connected to the pressing crossbar via a connecting frame;

[0010] A crossbeam support seat is arranged at the rear end of the center position in the length direction of the clamp base plate, side support seats are arranged on both sides of the length direction of the clamp base plate, the trailer hook positioning mechanism is arranged at the front end of the center position in the length direction of the clamp base plate, and the crossbeam pressing mechanism is arranged on the outer side of the rear end of the center position of the clamp base plate.

[0011] It is further characterized by:

[0012] A group of first sensing devices are respectively arranged on both sides of the beam support seat along the length direction, and the first sensing devices are used to sense whether the beam is placed in place;

[0013] A set of second sensing devices is provided on the upper surface of each of the surface profiling positioning plates, and the second sensing devices are used to sense whether the side mounting positioning plates are placed in place;

[0014] A mounting bracket is fixedly mounted on the rear end surface of the transmission seat, and a third sensing device arranged upward is provided on the mounting bracket, and the third sensing device is used to sense whether the trailer hook is placed in place;

[0015] The front end surface of the front stop limit plate is the rear limit end surface of the trailer hook, which ensures that the position of the trailer hook is stably and reliably set;

[0016] The bottom height support block is connected to the surface profiling positioning plate through the outer adjustment block, and the connecting bolts on the adjustment block adjust the lateral position of the surface profiling positioning plate by the degree of tightness, so that the lateral position can be adjusted, so that the manufacturing accuracy can be relatively reduced, and the manufacturing cost is reduced;

[0017] The lifting cylinder is fixedly connected to the beam support seat through a connecting plate to ensure stable and reliable positioning connection;

[0018] The first positioning block assembly includes a bottom support plate and a side contour guide block, which allows the setting of the side contour guide block for the crossbeam to be arranged to ensure that the placement position of the crossbeam is stable and reliable.

[0019] After adopting the above technical scheme, first the whole set of equipment needs to be connected to the power supply and air source, the pressing end of the pressing block is separated from the upper surface position of the contour support block, the crossbeam is placed on the crossbeam support seat, and the corresponding position of the crossbeam is placed in the corresponding area of ​​the first positioning block assembly, the side mounting positioning plates on both sides are placed on the contour support block from top to bottom, and the welding holes are inserted into the corresponding ends of the crossbeam, and the side mounting positioning plates are reliably pressed and attached to all the contour support blocks, the telescopic positioning cylinder is extended, so that the trailer hook is set on the rear convex positioning column, the rotating pressing cylinder is moved so that the pressing block presses the side mounting positioning plates on both sides, and at the same time the front and rear telescopic cylinders are pushed forward so that the front convex positioning column is inserted into the center positioning of the crossbeam. The hole is formed in the hole, and the lifting cylinder drives the pressing cross bar to press the cross beam, so that the position of the cross beam and the side mounting positioning plate is stable and reliable. Then the telescopic pushing cylinder is extended, so that the trailer hook is inserted into the corresponding position of the raised welding plates on both sides of the front end of the cross beam, so that the assembly position of the trailer hook, the cross beam and the side mounting positioning plate is stable and reliable. Then the welding mechanism performs automatic welding. After the welding is completed, each cylinder is reset, and the welded automobile traction mechanism can be removed. This device is simple to operate, does not require complicated operations, has low requirements for operators, and has high safety and production efficiency. It realizes precise positioning and clamping of the parts to be welded, ensuring that the size of the mechanism obtained by welding is stable and the deformation is controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The three-dimensional structure diagram of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The three-dimensional structure diagram of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 A three-dimensional diagram of a vehicle traction mechanism provided with the present invention;

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

[0024] Crossbeam 1, raised welding plate 101, side mounting positioning plate 2, welding hole 201, trailer hook 3;

[0025] Clamp bottom plate 10, beam support seat 20, front and rear telescopic cylinder 21, front convex positioning column 22, front stop limit 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, rotating pressing cylinder 35, output rod end 351, second sensing device 36, adjustment block 37, connecting bolt 38, trailer hook positioning machine Structure 40, telescopic material return cylinder 41, telescopic positioning cylinder 42, rear convex positioning column 43, slide seat 44, stand seat 45, lower stand plate 451, linear rail 46, guide seat 47, connecting rod 48, transmission seat 49, crossbeam 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 contour guide block 72. DETAILED DESCRIPTION

[0026] Automobile traction mechanism welding fixture, see Figure 1-Figure 3 , which includes a fixture bottom plate 10, a crossbeam support seat 20, two sets of side support seats 30, a trailer hook positioning mechanism 40, and a crossbeam pressing mechanism 50;

[0027] A crossbeam support seat 20 is provided at the rear end of the center position in the length direction of the clamp bottom plate 10, and side support seats 30 are respectively provided at the two sides of the length direction of the clamp bottom plate 10, and the side support seats 30 on both sides are arranged symmetrically, a trailer hook positioning mechanism 40 is provided at the front end of the center position in the length direction of the clamp bottom plate 10, and a crossbeam pressing mechanism 50 is provided at the outer side of the rear end of the center position of the clamp bottom plate 10;

[0028] The first positioning block assembly 70 is arranged on both sides of the beam support seat 20. The first positioning block assembly 70 includes a bottom support plate 71 and a side profiling guide block 72, which allows the beam 1 to be arranged along the setting of the side profiling guide block 72 when installed, ensuring that the placement position of the beam 1 is stable and reliable. The rear end of the beam support seat is provided with a front and rear telescopic cylinder 21, and the front end of the front and rear telescopic cylinder 21 is provided with a front convex positioning column 22. The front convex positioning column 22 is used to be inserted into the central positioning hole of the beam 1 for reliable positioning. The front end of the beam support seat 20 is provided with a front stop limit plate 23;

[0029] Each set of side support seats 30 includes a bottom height support block 31 and a surface profiling positioning plate 32. Three sets of profiling support blocks 33 are arranged on the upper surface of the surface profiling positioning plate 32. A corresponding pressing block 34 is arranged on the upper part of each set of profiling support blocks 33. The pressing block 34 is connected to a corresponding rotary pressing cylinder 35. The rotating end 341 of the pressing block 34 is sleeved on the output rod end 351 of the rotary pressing cylinder 35. The pressing end 342 of the pressing block 34 is detached from the upper surface of the profiling support block 35 when not pressed, so that the side mounting positioning plate 2 is placed from top to bottom on the surface profiling positioning plate 32 for positioning.

[0030] The trailer hook positioning mechanism 40 includes a telescopic material-returning cylinder 41, a telescopic positioning cylinder 42, a rearward convex positioning column 43, a slide seat 44, and a stand seat 45. The upper surface of the stand seat 45 is slidably connected to the slide seat 44 through a linear track 46. The upper surface of the slide seat 44 is provided with a telescopic positioning cylinder 41 and a guide seat 47. The telescopic material-returning cylinder 41 is fixedly provided on the lower vertical plate 451 of the stand seat 45. The front end of the telescopic material-returning cylinder 41 is fixedly connected to the rear end vertical surface of the slide seat 44 through a connecting rod 48 and a transmission seat 49. The rear output end of the telescopic positioning cylinder 42 is fixedly connected to the rearward convex positioning column. The rearward convex positioning column 43 convexly passes through the guide hole of the guide seat 47. The rear end of the rearward convex positioning column 43 extends out to be used for sleeve installation of the trailer hook 3.

[0031] The crossbeam pressing mechanism 50 includes a lifting cylinder 51 and a pressing crossbar 52. The upper output end of the lifting cylinder 51 is connected to the pressing crossbar 52 through a connecting frame 53. The pressing crossbar 52 is arranged in a corresponding length area of ​​the crossbeam 1 to ensure that the pressing is fully reliable.

[0032] In specific implementation, a group of first sensing devices 24 are respectively provided on both sides of the beam support seat 20 along the length direction, and the first sensing device 24 is used to sense whether the beam 1 is placed in place;

[0033] A set of second sensing devices 36 are provided on the upper surface of each surface profiling positioning plate 32, and the second sensing devices 36 are used to sense whether the side mounting positioning plate 2 is placed in place;

[0034] A mounting bracket 60 is fixedly mounted on the rear end surface of the transmission seat 49, and a third sensing device 61 arranged upward is disposed on the mounting bracket 60, and the third sensing device 61 is used to sense whether the trailer hook 3 is placed in place;

[0035] The front end surface of the front stop limit plate 23 is the rear limit end surface of the trailer hook 3, which ensures that the position of the trailer hook 3 is stably and reliably set.

[0036] In specific implementation, the bottom height support block 31 is connected to the surface profiling positioning plate 32 through the outer adjustment block 37, and the connecting bolt 38 on the adjustment block 37 adjusts the lateral position of the surface profiling positioning plate 32 by the degree of tightness, so that the lateral position can be adjusted, so that the manufacturing accuracy can be relatively reduced, and the manufacturing cost is reduced;

[0037] The lifting cylinder 51 is fixedly connected to the crossbeam support seat 20 through the connecting plate 54 to ensure that the positioning connection is stable and reliable.

[0038] Its working principle is as follows. First, the whole set of equipment needs to be connected to the power supply and air source. The pressing end 342 of the pressing block 34 is separated from the upper surface position of the profiling support block 33. The crossbeam 1 is placed on the crossbeam support seat 20, and the corresponding position of the crossbeam 1 is placed in the corresponding area of ​​the first positioning block assembly 70. The side mounting positioning plates 2 on both sides are placed from top to bottom on the profiling support block 33, and the welding holes 201 are inserted into the corresponding ends of the crossbeam 1, and the side mounting positioning plates 2 are reliably pressed and attached to all the profiling support blocks 33. The telescopic positioning cylinder 42 is extended to make the trailer hook 3 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 or not and whether it is put in place, and judge in an instant The assembly of the trailer hook 3, the cross beam 1 and the side mounting positioning plate 2 is completed in a stable and reliable manner. After that, the welding mechanism performs automatic welding. After the welding is completed, each cylinder is reset, and the welded automobile traction mechanism can be removed. This device is simple to operate, does not require complicated operations, has low requirements on operators, and has high safety and production efficiency. It realizes precise positioning and clamping of the parts to be welded, ensures the dimensional stability of the mechanism obtained by welding, and the deformation is controllable.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A welding and fixing device for automobile traction mechanism, characterized in that: It includes: Fixture base plate, A beam support seat, wherein first positioning block assemblies are arranged on both sides of the beam support seat, a front and rear telescopic cylinder is arranged at the rear end of the beam support seat, a front convex positioning column is arranged at the front end of the front and rear telescopic cylinder, and the front convex positioning column is used to be inserted into the central positioning hole of the beam for reliable positioning, and a front stop limit plate is arranged at the front end of the beam support seat; Two groups of side support seats, each group of the side support seats includes 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 pressing block, the pressing block is connected with a corresponding rotary pressing cylinder, the rotating end of the pressing block is sleeved on the output rod end of the rotary pressing cylinder, and the pressing end of the pressing block is detached from the upper surface of the profiling support block when not pressed, so that the side installation positioning plate is placed from top to bottom on the surface profiling positioning plate for positioning and placement; The trailer hook positioning mechanism comprises a telescopic material-returning cylinder, a telescopic positioning cylinder, a rear convex positioning column, a slide seat, and a stand seat. The slide seat is arranged on the upper surface of the stand seat through a linear track. The telescopic positioning cylinder is arranged on the upper surface of the slide seat. The telescopic material-returning cylinder is fixedly arranged on the lower stand plate of the stand seat. The front end of the telescopic material-returning cylinder is fixedly connected to the rear end stand of the slide seat through a connecting rod and a transmission seat. The rear output end of the telescopic positioning cylinder is fixedly connected to the rear convex positioning column. The rear convex positioning column is used to sleeve the trailer hook. and a crossbeam pressing mechanism, which comprises a lifting cylinder and a pressing crossbar, wherein the upper output end of the lifting cylinder is connected to the pressing crossbar via a connecting frame; A crossbeam support seat is arranged at the rear end of the center position in the length direction of the clamp base plate, side support seats are arranged on both sides of the length direction of the clamp base plate, the trailer hook positioning mechanism is arranged at the front end of the center position in the length direction of the clamp base plate, and the crossbeam pressing mechanism is arranged on the outer side of the rear end of the center position of the clamp base plate.

2. The automobile traction mechanism welding and fixing device according to claim 1, characterized in that: A group of first sensing devices are respectively arranged on both sides of the beam support seat along the length direction, and the first sensing devices are used to sense whether the beam is placed in place.

3. The automobile traction mechanism welding and fixing device according to claim 1, characterized in that: A group of second sensing devices are arranged on the upper surface of each of the surface profiling positioning plates, and the second sensing devices are used to sense whether the side-mounted positioning plates are placed in place.

4. The automobile traction mechanism welding and fixing device according to claim 1, characterized in that: A mounting bracket is fixedly mounted on the rear end surface of the transmission seat, and a third sensing device arranged upward is provided on the mounting bracket. The third sensing device is used to sense whether the trailer hook is placed in place.

5. The automobile traction mechanism welding and fixing device according to claim 1, characterized in that: The front end surface of the front stop limiting plate is the rear limiting end surface of the trailer hook.

6. The automobile traction mechanism welding and fixing device according to claim 1, characterized in that: The bottom height support block is connected to the surface profiling positioning plate through an outer adjustment block, and the connecting bolts on the adjustment block adjust the lateral position of the surface profiling positioning plate according to the degree of tightness.

7. The automobile traction mechanism welding and fixing device according to claim 1, characterized in that: The lifting cylinder is fixedly connected to the beam support seat via a connecting plate.

8. The automobile traction mechanism welding and fixing device according to claim 1, characterized in that: The first positioning block assembly includes a bottom support plate and a side contour guide block.

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