Quick positioning mechanism for L-shaped small part

Abstract

The invention discloses a quick positioning mechanism for an L-shaped small part. The quick positioning mechanism comprises a first compressing mechanism, a second compressing mechanism and a positioning pin. The first compressing mechanism comprises a first air cylinder, a first linkage mechanism and a first pressing block, the first air cylinder controls the first pressing block to conduct lifting displacement through the first linkage mechanism, the first pressing block presses a vehicle body large part, and a storing plate is arranged below the vehicle body large part. The second compressing mechanism comprises a second air cylinder, a second linkage mechanism and second pressing blocks, the second air cylinder controls the second pressing blocks to move in the left-right direction through the second linkage mechanism, and a through hole allowing the positioning pin to be inserted into is formed in the side end of the storing plate. The L-shaped small part is placed in the throughhole and fixed through the positioning pin, and thus the L end of the L-shaped small part is connected with the bottom of the large part. Firstly, the vehicle body large part is positioned through thefirst compressing mechanism, and then the L-shaped small part is positioned through the second compressing mechanism, so that the positioning effect before welding is achieved.

Description

technical field [0001] The invention relates to the technical field of vehicle body welding, in particular to a quick positioning mechanism for L-shaped small parts. Background technique [0002] At present, in the design of automobile welding process and tooling, considering the stable characteristics of body welding, welding process splitting, welding process welding sequence, picking and placing parts after welding, it is particularly difficult to fix small parts on large parts of the car body, and it is particularly difficult to fix small parts on the body frame. Positioning welding of small parts, sheet metal parts are small, and there are few positioning and restraining pins, which occupy welding space and affect the welding channel and space. At present, the positioning of L-shaped small parts is a technological problem in the field of welding. Therefore, it is particularly important to solve this type of problem. important. SUMMARY OF THE INVENTION [0003] In vie...

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Problems solved by technology

[0002] At present, in the design of automobile welding process and tooling, considering the characteristics of stable welding of the car body, the splitting of the welding process, the welding sequence of the welding process, and the picking and placing of parts after welding, it is particularly difficult to fix small parts on the large parts of the car body. Positioning welding of small parts, sheet metal parts themselves are small, and positioning restraint pins are few, occupying welding space and affecting welding channels and spaces. At present, the positioning of L-shaped small parts is a technical problem in the field of welding. Therefore, it is particularly important to solve this type of problem. important

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