CN202336686U - Repair welding clamp - Google Patents

Abstract

The utility model discloses a repair welding fixture, which comprises a base, on which a first connecting plate is fixed, the bottom of the first connecting plate is connected with the cylinder, the top end of the piston rod of the cylinder is connected with the first shaft joint, and the first shaft joint is A clamping arm is hinged, and the middle part of the clamping arm is hinged with the first connecting plate; a second connecting plate is fixed on the side opposite to the first connecting plate on the base, and a longitudinal sliding device is arranged in the second connecting plate. It is connected with the first clamping block; a hole is opened at the end of the second connecting plate close to the cylinder, and a second shaft joint connected with the first shaft joint is arranged above the opening; a strut is hinged on the second shaft joint, and the strut runs through After opening the hole, it is fixed on the second clamping block. The repair welding jig provided by the utility model has a small device and a compact structure, and functions as a repair welding workbench. Reduce equipment costs and improve work efficiency.

Description

A repair welding fixture

technical field

The utility model relates to a jig in automobile manufacturing, in particular to a repair welding jig used in an automobile welding production line. the

Background technique

At present, when welding parts on the automobile welding production line, welding fixtures are usually used for clamping and positioning. The existing welding fixtures mainly include a base, a connecting plate fixed on the base, a cylinder connected to the connecting plate, and a piston connected to the cylinder. Structures such as clamping arms with hinged rods. As we all know, the welding fixtures used for parts of different shapes and sizes also have their own advantages and disadvantages. For parts with complex shapes and high welding requirements, the requirements for welding fixtures are also high and the structure is more complicated. Therefore, when using complex welding fixtures, the clamping block of the fixture may cover part of the welding position and spot welding cannot be performed. . the

In view of the above-mentioned defect that the complex welding fixtures cannot be spot-welded in all directions, most manufacturers complete all the welding by adding multiple stations. Specifically, the welding part of the part is first clamped to position the welding spot, and then the clamp is released to take out the part and place it on the clamping arm as a repair welding workbench, or transfer the part to another station for repair welding. The disadvantages of the above technical solutions are: ①If the parts are directly placed on the clamping arm without fixing the repair welding, the positioning accuracy of the easily worn parts will affect the accuracy of the vehicle body; at the same time, this repair welding method will easily make the parts Sliding and collision during repair welding will affect the welding strength; ② If the parts are transferred to other stations for repair welding, this method of diverting welding tongs and adding stations will increase equipment costs, cause waste of resources, and reduce work efficiency. the

Utility model content

The utility model provides a repair welding jig, which solves the technical defects of easy wear of parts, poor welding strength, high equipment cost and low work efficiency caused by the existing welding jig. the

The technical scheme adopted in the utility model is specifically as follows:

A repair welding fixture, comprising a base, on which a first connecting plate is fixed, the bottom of the first connecting plate is connected to a cylinder, the top end of a piston rod of the cylinder is connected to a first shaft joint, and a clamping arm is hinged on the first shaft joint , the middle part of the clamping arm is hinged with the first connecting plate; on the base, a second connecting plate is fixed on the side opposite to the first connecting plate, and a longitudinal sliding device is arranged in the second connecting plate, which is connected with the first connecting plate The clamping blocks are connected; a hole is opened at the end of the second connecting plate close to the cylinder, and a second shaft joint connected with the first shaft joint is arranged above the opening; a strut is hinged on the second shaft joint, and the strut passes through the hole Fixed on the second clamping block. the

In a preferred technical solution, the sliding device includes a longitudinal chute and a sliding bar sliding up and down in the chute, the chute passes through the second connecting plate inside and outside, and the sliding bar is fixedly connected with the first clamping block. the

In a more preferred technical solution, the first clamping block is fixedly connected to the slide bar through bolts; the first clamping block slides up and down in the chute, and the distance between the first clamping block and the second clamping block can be manually adjusted. The distance between them is convenient for clamping parts and repairing welding. the

In the preferred technical solution, the first shaft joint is a groove structure, the notch of the groove is upward, the bottom of the groove is connected with the piston rod of the cylinder, and the two walls of the groove are provided with the first connection hinged with the clamping arm pole. the

In the preferred technical solution, the second shaft joint is a groove structure, the notch of the groove is outward, the bottom of the groove is connected with the first connecting rod, and the two walls of the groove are provided with a second connection hinged with the support rod pole. The above-mentioned technical design of the first shaft joint and the second shaft joint enables the clamping arm, the strut, and the second clamping block fixedly connected to the strut to move under force when the cylinder is ventilated to generate force. the

In a preferred technical solution, the upper part of the first connecting plate is slotted, and the front part of the clamping arm is provided with a slot matching the first connecting plate. the

In a more preferred technical solution, the upper part of the first connecting plate is provided with a groove with an upward opening, and the front part of the clamping arm is provided with a groove with a downward opening; the groove is mainly for more stable placement of different shapes parts. the

In a preferred technical solution, the first clamping block is vertically parallel to the second clamping block. the

The repair welding jig provided by the utility model has a small device and a compact structure, and the parts of the jig are mostly connected with each other, which is convenient for disassembly and maintenance and precision adjustment; at the same time, the first clamping is added on the basis of the existing welding jig. Clamping mechanisms such as the first clamping block and the second clamping block function as repair welding workbenches. The operation is simple, time-saving and labor-saving, which not only increases the welding strength, reduces the wear of parts during welding, but also saves equipment costs. ,Improve work efficiency. The repair welding fixture provided by the utility model can also be used in conjunction with multiple fixtures to jointly clamp more complicated parts, has strong versatility, and can be applied to various stations that need repair welding. the

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of the repair welding fixture of the present invention. the

Fig. 2 is a schematic view of the front structure of the repair welding jig of the present invention. the

Fig. 3 is a side view structural schematic diagram of the repair welding fixture of the present invention. the

Fig. 4 is a working schematic diagram of a plurality of welding repair fixtures of the present invention assembled together. the

Detailed ways

As shown in Figures 1 and 2, a repair welding fixture includes a base 1. The base 1 is an L-shaped structure. Connected, the top end of the piston rod of the cylinder 3 is connected to the first shaft joint 4, the first shaft joint 4 is hinged to one end of the clamping arm 5, and the middle part of the clamping arm 5 is hinged to the top of the first connecting plate 2. the

The other side of the upper part of the base 1 is fixed with a second connecting plate 6, the position of the second connecting plate 6 is opposite to the first connecting plate 2; the second connecting plate 6 is provided with a longitudinal sliding device, and the sliding device includes a longitudinal chute 7 and the slide bar 8 that can slide up and down in the chute 7, the chute 7 runs through the second connecting plate 6 inside and outside, the first clamping block 9 is set on the slide bar 8, and the two ends of the slide bar 8 are bolted The first clamping block 9 is screwed and fixed. the

The sliding device in the present invention is not limited to the structural form of the chute 7 and the sliding bar 8 mentioned in this embodiment, as long as the first clamping block 9 connected to the sliding device can slide up and down. At the same time, it is not limited to the fixing method of 8 sets of bolts on the sliding rod, as long as the fixing of the first clamping block 9 on the sliding device is satisfied. the

In addition, the upper part of the first connecting plate 2 is provided with a groove opening upward, and the front part of the clamping arm 5 is provided with a groove opening downward and matching with the groove position of the first connecting plate 2 . the

As shown in Figure 3, the first shaft joint 4 is a groove structure, the notch of the groove is upward, the bottom of the groove is connected with the piston rod of the cylinder 3, and the two walls of the groove are provided with a first joint hinged with the clamping arm 5 A connecting rod 10 . the

The upper part of the second connecting plate 6, one end close to the cylinder 3 is provided with an opening 11, and the top of the opening 11 is provided with a second shaft joint 12 connected with the first shaft joint 4; the second shaft joint 12 is also a groove structure , the notch of the groove is outward, the bottom of the groove is connected with the first connecting rod 10 , and the two walls of the groove are provided with the second connecting rod 14 hinged with the strut 13 . the

As mentioned above, one end of the strut 13 is hinged to the second shaft joint 12 , and the other end of the strut 13 passes through the hole 11 and is fixed on the second clamping block 15 . the

The working process of the repair welding fixture provided by the utility model is as follows:

Place the repair welding fixture of the present utility model on the workbench, fix the base 1 of the fixture on the workbench by bolts; take the parts to be welded, put them in the groove on the top of the first connecting plate 2, and start the cylinder 3. the

After the cylinder 3 is ventilated, its piston rod drives the clamping arm 5 to descend, and after the parts are clamped, spot welding is carried out to some welding positions. the

After the spot welding is completed, start the cylinder 3 to make the clamping arm 5 rise, take out the parts, turn them over and put them between the first clamping block 9 and the second clamping block 15; according to the actual size of the parts, they can slide up and down The spacing of the first clamping blocks 9 is adjusted so as to clamp the components. the

After the adjustment is completed, start the cylinder 3 again, and its piston rod drives the first shaft joint 4, the second shaft joint 12, and the strut 13 in turn, so that the second clamping block 15 fixedly connected with the strut 13 descends, and firmly clamps it. Components, repair welding for positions that have not been welded before. the

After the repair welding is completed, the operation is the same as above, start the cylinder 3, and take out the welded parts. the

If you want to weld more complex large-scale parts, you can assemble a plurality of repair welding fixture devices of the present utility model together on the workbench. The assembly position is shown in Figure 4. The first support 16 is assembled in the middle of the two repair welding fixtures, and the second support 17 is assembled at the front end of the workbench; the parts are placed in the groove of the clamping arm 5 and the first connecting plate 2 for initial welding, After the initial welding is completed, the operation is the same as the above-mentioned use process, and the parts are turned over and placed between the first clamping block 9 and the second clamping block 15 for repair welding. the

Claims (8)

1. A repair welding fixture, comprising a base (1), the base (1) is fixed with a first connecting plate (2), the bottom of the first connecting plate (2) is connected with the cylinder (3), the cylinder (3) The top of the piston rod is connected with the first shaft joint (4), and the clamping arm (5) is hinged on the first shaft joint (4), and the middle part of the clamping arm (5) is hinged with the first connecting plate (2). That is, a second connecting plate (6) is fixed on the side opposite to the first connecting plate (2) on the base (1), and a longitudinal sliding device is arranged in the second connecting plate (6), and the sliding device is connected with the first connecting plate (2). The first clamping block (9) is connected; the second connecting plate (6) has a hole (11) near one end of the cylinder (3), and the hole (11) is provided with a joint with the first shaft (4) connected second shaft joint (12); the second shaft joint (12) is hinged with a strut (13), and the strut (13) is fixed on the second clamping block (15) after penetrating the opening (11) )superior. 2. Repair welding fixture according to claim 1, is characterized in that, described sliding device comprises longitudinal chute (7) and the slide bar (8) that slides up and down in chute (7), chute ( 7) The second connecting plate (6) passes through inside and outside, and the sliding rod (8) is fixedly connected with the first clamping block (9). 3. The repair welding fixture according to claim 1 or 2, characterized in that, the first clamping block (9) is fixedly connected to the sliding rod (8) through bolts. 4. The repair welding fixture according to claim 1, characterized in that, the first shaft joint (4) is a groove structure, the notch of the groove is upward, and the bottom of the groove is in contact with the cylinder (3) The piston rods are connected, and the two walls of the groove are provided with a first connecting rod (10) hinged with the clamping arm (5). 5. The repair welding fixture according to claim 1 or 4, characterized in that, the second shaft joint (12) is a groove structure, the groove's notch is outward, and the bottom of the groove is in contact with the first A connecting rod (10) is connected, and the two walls of the groove are provided with a second connecting rod (14) hinged with the support rod (13). 6. The welding repair fixture according to claim 1, characterized in that, the upper part of the first connecting plate (2) is slotted, and the front part of the clamping arm (5) is provided with the The matching groove of the first connecting plate (2). 7. The repair welding fixture according to claim 6, characterized in that, the upper part of the first connecting plate (2) is provided with a groove opening upward, and the front part of the clamping arm (5) is provided with There are grooves that open downward. 8. The welding repair fixture according to claim 1, characterized in that, the first clamping block (9) and the second clamping block (15) are vertically parallel.

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