Compact liner coating equipment

Abstract

The invention relates to compact liner coating equipment. The compact liner coating equipment comprises an adhesive pushing module, an adhesive storing module, a spray gun base and a rotating spray gun, wherein the adhesive pushing module consists of a cantilever spray rod, a bottom disc and a driving mechanism, and the driving mechanism is mounted on the bottom disc and consists of a motor, a speed reducer and a linear die set; the adhesive storing module consists of an adhesive storing sleeve, an adhesive storing barrel flange block, a dismountable sliding block seat, a ball head, a piston, an adhesive storing barrel upper fixing block and an adhesive storing barrel lower fixing block, and is mounted in the cantilever spray rod; the dismountable sliding block seat is connected with the linear die set; one end of the piston is inserted into the adhesive storing sleeve; the spray gun base consists of a spray gun baseplate, a central adhesive pipe, a compressed-air pipe and a fast-inserting type pipe joint, wherein one end of the central rubber pipe is connected with a quick change joint in the center of the adhesive storing barrel flange block; the compressed-air pipe is connected to the baseplate through the fast-inserting type pipe joint; the baseplate is connected with the cantilever spray rod; the rotating spray gun is mounted on the specially-made spray gun baseplate. According to the compact liner coating equipment disclosed by the invention, the accuracy and the efficiency for manufacturing a liner of an engine can be improved.

Description

technical field [0001] The invention belongs to the technical field of solid engine liner manufacturing, and in particular relates to liner spraying equipment. Background technique [0002] The liner is one of the structural components in the combustion chamber of the solid rocket motor. It is located between the thermal insulation layer and the propellant grain, with a thickness of 0.3mm~1.0mm. It mainly plays the role of bonding the thermal insulation layer and the propellant. The liner is a polyurethane polymer material, which is a high-viscosity adhesive with poor fluidity before curing, and becomes an elastomer material after curing. The forming process of the liner includes steps such as preparation of slurry, coating on the surface of the thermal insulation layer, pre-curing before charge and solidification of charge together with the propellant. The coating process of the lining layer is currently commonly used with centrifugal process, manual scraping, high-pressur...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a compact liner spraying equipment, which is used to solve the problems of low liner coating efficiency, out-of-control local thickness, excessive process loss, and difficult cleaning of residual glue in the equipment.

Images