Multi-section aluminum foil pasting device for shell of gas generator

Abstract

The invention discloses a multi-section aluminum foil pasting device for a shell of a gas generator. The device comprises a shell conveying rotary disc, a film taking and placing mechanism and a rolling film pasting mechanism; the film taking and placing mechanism comprises a film suction cylinder, a rotation driving device for driving the film suction cylinder to rotate, and a film suction cylinder driving device for driving the film suction cylinder to move back and forth between a film taking station and a film placing station; a multi-claw pneumatic chuck in the film suction cylinder at the film placing station drives a jacking block to extend out of an opening in the film suction cylinder so as to jack and press multiple sections of to-be-pasted aluminum foils on the outer circumferential wall of the film suction cylinder on the inner wall of the shell to be locally fixed; and the rolling film pasting mechanism comprises a roller for rolling and pasting all the aluminum foil on the inner wall of the shell and a roller driving device. According to the multi-section aluminum foil pasting device, aluminum foil is divided into multiple sections to be pasted, internal stress caused by pulling of the aluminum foil in the rolling process is effectively reduced, it is ensured that the aluminum foil is not wrinkled and degummed, and the air tightness is not affected, the aluminum foil is adsorbed to the film suction cylinder, locally pressed and pasted to the inner wall of the shell for pre-positioning and then rolled and pasted to the inner wall of the shell through the roller, the relative position precision after pasting is ensured, and the manufacturing process is stable and reliable.

Description

technical field [0001] The invention relates to an aluminum foil pasting device for the inner wall of a gas generator shell. Background technique [0002] Coating a layer of aluminum foil on the inner wall of the gas generator shell is mainly to seal the gas-generating medicine inside the shell, so as to ensure that the gas-generating medicine will not be affected by moisture and will not pass through the gas-generating medicine during the use of the car. The air hole leaks into the interior of the car's airbag. Thereby ensuring that the generator on the car can be detonated smoothly when an accident occurs in the car, and the gas can quickly break through the aluminum film to ensure that the airbag can pop out safely to play a protective role. At present, there are a lot of automation equipment in the field of automatic film sticking on the inner wall, but the relative position control of the film and the shell is not good, and the difference between the upper and lower po...

AI Technical Summary

Problems solved by technology

At present, there are a lot of automation equipment in the field of automatic film sticking on the inner wall, but the relative position control of the film and the shell is not good, and the difference between the upper and lower positions is very easy to be 1-3 mm, which is unacceptable for the generator and will fail. Very high risk of leaks

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