CN203062146U - Automobile welding fixture - Google Patents

Abstract

The utility model discloses an automobile welding fixture, which comprises a base, a base frame, a connecting plate, and a cylinder. The base frame is fixed on the base, and the connecting plate is horizontally arranged above the base frame. The lower side of the left end of the connecting plate, the cylinder is fixed on the left side of the base frame, the left side of the connecting plate is hinged on the base frame, the upper side of the base frame is provided with a U-shaped groove, and the upper side of the U-shaped groove corresponds to two sides respectively A supporting block is fixedly connected, two first pressing blocks are fixedly connected to the lower side of the connecting plate, the pressing blocks correspond to the positions of the supporting blocks, and a positioning pin is fixed at the bottom of the U-shaped groove. This solution allows for good positioning, simplifies fixtures, and increases soldering access.

Description

An automobile welding jig

technical field

The utility model relates to a welding jig, in particular to an automobile welding jig.

Background technique

A large number of pneumatic welding fixtures are used in the automobile welding production line. Among the many positioning methods, the 3-2-1 positioning method is used as the basis, and each part is positioned by two positioning pins and multiple positioning surfaces. There is a large distance between the positioning pin and the positioning surface. This positioning method is feasible and reliable for most parts. However, for larger assemblies or components with more complex structures, this positioning method is unreasonable. For example, for the frame welding assembly, due to the large number of positioning mechanisms, many welding tongs are blocked. Even this positioning mode can't be realized sometimes, for most rear floor welding assemblies, because the cavity structure is formed between the rear floor side beam and the rear floor, the briquetting block of the fixture can't compress the corresponding positioning block. the

Utility model content

The purpose of the utility model is to provide an automobile welding jig, which has a simple structure, can be positioned conveniently, and can increase welding passages. the

The purpose of this utility model is achieved through the following technical solutions. An automobile welding fixture, including a base, a base frame, a connecting plate, and a cylinder, the base frame is fixed on the base, the connecting plate is arranged horizontally, and is located above the base frame, and the piston rod on the cylinder is vertically hinged under the left end of the connecting plate side, the cylinder is fixed on the left side of the pedestal, the left side of the connecting plate is hinged on the pedestal, the upper side of the pedestal is provided with a U-shaped groove, and the two sides of the upper side of the U-shaped groove are respectively fixedly connected with a support block, The lower side of the connecting plate is fixedly connected with two first pressing blocks, the pressing blocks correspond to the positions of the supporting blocks, and a positioning pin is fixed at the bottom of the U-shaped groove. Using this fixture, put the sheet metal part A to be welded into the U-shaped groove and position it with positioning pins. The two sides of the upper side of the sheet metal part A are located on the support block. The piston rod moves upward, and the piston rod drives the connecting plate to rotate downward, and the first pressing block on the connecting plate compresses sheet metal part B and sheet metal part A, and welding can be performed. After the welding is completed, the piston rod of the cylinder moves downward, and the piston rod drives the connecting plate to rotate upward, so that the sheet metal parts can be taken out. The scheme has a simple structure, can be positioned conveniently, and can increase welding channels. the

Preferably, the positioning pin is provided with a fastening device. The sheet metal part A is fastened by the fastening device, so that the positioning of the positioning pin is convenient, accurate and fast.

Preferably, the fastening device includes a fastening block and a spring, the fastening block is composed of a horizontally arranged connecting block and a second pressing block perpendicular to the connecting block, the connecting block is hinged on the positioning pin, One end of the spring is connected to the positioning pin, and the other end of the spring is connected to the second pressing block. Using this scheme, insert the sheet metal part A into the positioning pin, pull up the fastening block, and then press the fastening block on the sheet metal part A. The scheme is simple in structure and easy to use.

The beneficial effect of the utility model is that the structure is simple, the positioning is convenient, accurate and fast, and the welding channel is increased. the

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the positioning pin of the present invention.

Detailed ways

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment:

As shown in Figures 1 to 2, an automobile welding fixture includes a base 1, a base frame 2, a connecting plate 7, and a cylinder 11. The base frame is fixed on the base, and the connecting plate is arranged horizontally above the base frame. The piston rod 10 on the cylinder is vertically hinged on the lower side of the left end of the connecting plate, the cylinder is fixed on the left side of the base frame, the left side of the connecting plate is hinged on the base frame, and the upper side of the base frame is provided with a U-shaped groove 4 The two sides of the upper side of the U-shaped groove are respectively fixedly connected with a support block 5, and the lower side of the connecting plate is fixedly connected with two first compression blocks 6, the position of the compression block corresponds to the position of the support block, and the bottom of the U-shaped groove is fixed with a Locating pin 3. The positioning pin is provided with a fastening device. The fastening device includes a fastening block 31 and a spring 32, the fastening block is composed of a horizontally arranged connecting block and a second pressing block perpendicular to the connecting block, the connecting block is hinged on the positioning pin, and the spring One end of the spring is connected to the positioning pin, and the other end of the spring is connected to the second pressing block. When in use, put the sheet metal part A8 to be welded into the U-shaped groove and position and clamp it with positioning pins. The two sides of the upper side of the sheet metal part A are located on the support block, and the sheet metal part B9 is placed on the sheet metal part A. , the piston rod of the cylinder moves upwards, and the piston rod drives the connecting plate to rotate downwards, and the first pressing block on the connecting plate compresses the sheet metal part B and the sheet metal part A, and then welding can be carried out. After the welding is completed, the piston rod of the cylinder moves downward, and the piston rod drives the connecting plate to rotate upward, so that the sheet metal parts can be taken out. This solution allows for good positioning, simplifies fixtures, and increases welding access. the

The above descriptions are preferred specific implementation modes of the present utility model, and are not intended to limit the implementation scope of the present utility model. The utility model can also have other embodiments, as long as it does not deviate from the spirit of the utility model, no matter what kind of transformation in form all falls within the protection scope of the utility model.

Claims (3)

1. auto welding jig, it is characterized in that, comprise base (1), pedestal (2), connecting plate (7), cylinder (11), described pedestal is fixed on the base, connecting plate is horizontally disposed with, be positioned at the pedestal top, piston rod on the cylinder (10) is vertically hinged on the downside of connecting plate left end, cylinder is fixed on the left side of pedestal, and the left side of described connecting plate is hinged on the pedestal, and the pedestal upside is provided with U-shaped groove (4), U-shaped groove upside both sides are a fixedly connected back-up block (5) respectively, fixedly connected two first compact heaps of the downside of connecting plate (6), compact heap is corresponding with the back-up block position, and an alignment pin (3) is fixed in the bottom of U-shaped groove.

2. a kind of auto welding jig according to claim 1 is characterized in that, described alignment pin is provided with fastener.

3. a kind of auto welding jig according to claim 2, it is characterized in that, described fastener comprises a fastening block (31) and a spring (32), fastening block is made up of with second compact heap vertical with contiguous block a horizontally disposed contiguous block, contiguous block is hinged on the alignment pin, one end of spring is connected on the alignment pin, and the other end of spring is connected on second compact heap.

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