Pneumatic propulsion device of welding fixture positioning pin for automobile body and work method thereof

Abstract

The invention discloses a pneumatic propulsion device of a welding fixture positioning pin for an automobile body, comprising the positioning pin. The pneumatic propulsion device is characterized by consisting of a driving part and a positioning part, wherein the driving part is fixed on a clamp body; a gas source is input from the input end of the driving part; the out end of the driving part is connected with the welding fixture positioning pin for the automobile body; and the positioning part is fixedly arranged on the driving part. The work method of the pneumatic propulsion device comprises the following steps of: arranging the positioning pin on a front-end guide rod of an air cylinder driving rod of the air cylinder; arranging a stamping part for installing the positioning pin on a corresponding clamp; connecting the gas source to push out the air cylinder driving rod and allowing the positioning pin to penetrate into a preserved positioning hole in the stamping part; and finishing the accurate positioning of the positioning pin on the stamping part in the welding process of the automobile body. The pneumatic propulsion device has the advantages of small size, simple work flow, stable work state, convenience for installation and operation and capable of positioning the positioning pin on the stamping part accurately; and with low construction cost of the device, the cost of the production flow can be greatly reduced.

Description

(1) Technical field: [0001] The invention relates to a pneumatic propulsion device, in particular to a pneumatic propulsion device and a working method thereof for positioning pins of automobile body welding fixtures. (two) background technology: [0002] During the assembly and welding process of the automobile body, each stamping part needs to be accurately positioned on the fixture with a positioning pin to ensure the accurate installation of the automobile interior and other accessories. Therefore, in the automobile assembly and welding fixture mechanism, it is necessary to install a large number of positioning pin device. Among these locating pins, some are fixed and can be directly installed on the fixture body; there are also a large number of locating pins that must be designed as The movable pin is removed when the stamping is installed, and the positioning pin is returned to the designated position after the stamping is installed to accurately position the stampin...

AI Technical Summary

Problems solved by technology

The manual method is to control the reciprocating motion of the positioning pin with human power as the power source. According to this method, the cost of design and manufacture is relatively high, and it takes up a lot of space. There is often insufficient installation space, and it is time-consuming, laborious and inconvenient to operate.

Images