Paint spraying method for car lamp polycarbonate matched mirror

Abstract

The invention discloses a method for spraying lacquer on car lamp lens made from polycarbonate material, comprising the following steps of (1) removing dust, specifically, removing dust of a lens work piece that is processed by injection molding and made from polycarbonate material by an electrostatic dust removing gun, or wiping the work piece by an ethanol aqueous solution with the volume concentration of 50-99.5% by weight percentage to remove dust; (2) coating lacquer by spraying; (3) infrared leveling, specifically, irradiating the lens work piece that is coated with lacquer by spraying and is made from polycarbonate material through infrared light, leveling for 3-5min at 30-60 DEG C; (4) drying; and (5) annealing at a high temperature. All steps are accomplished according to above sequence on a production line. The method of the invention is continuously accomplished through coating lacquer on the work piece by spraying and removing surface stress on a production line, avoids the defect that the work piece is polluted by firstly annealing the work piece in prior art, improves the quality of the hard film on the surface of the work piece coated with lacquer by spraying, and effectively improves work efficiency. The processed product has good appearance and quality, and the qualification rate of the product is improved.

Description

technical field [0001] The invention relates to the technical field of spraying, in particular to a method for spraying paint on polycarbonate mirrors of vehicle lights. Background technique [0002] The process of spraying hard film mainly involves on the light distribution mirror of the car light. At present, the method of spraying paint on the light distribution mirror of the polycarbonate material of the car lamp is to use an annealing furnace to remove the surface stress of the light distribution mirror before the automatic spraying of the light distribution mirror. These two operations are carried out in stages. Under the action of the high temperature of the annealing furnace, the surface of the optical mirror workpiece generates static electricity, which is easier to absorb dust in the environment. After automatic spraying, the surface of the optical mirror workpiece is prone to pitting, which affects the quality of the optical mirror product. This spraying process ...

AI Technical Summary

Problems solved by technology

At present, the method of spraying paint on the light distribution mirror of the polycarbonate material of the car lamp is to use an annealing furnace to remove the surface stress of the light distribution mirror before the automatic spraying of the light distribution mirror. These two operations are carried out in stages. Under the action of the high temperature of the annealing furnace, the surface of the optical mirror workpiece generates static electricity, which is easier to absorb dust in the environment. After automatic spraying, the surface of the optical mirror workpiece is prone to pitting, which affects the quality of the optical mirror product.

This kind of spraying process of the light distribution mirror of the car lamp cannot meet the quality requirements of the motor vehicle industry, especially the rapid development of the automobile industry.