Tail box door spring surface spraying and flocking method

Abstract

The invention provides a tail box door spring surface spraying and flocking method. The method comprises the following steps of preparing waterproof and oilproof polyurethane flocking glue, and cleaning tail box door springs to make the surfaces of the tail box door springs smooth; uniformly spraying the waterproof and oilproof polyurethane flocking glue to the surfaces of the tail box door springs to be solidified to form an inner flocking layer; spraying a layer of waterproof and oilproof polyurethane flocking glue on the surface of the inner flocking layer to serve as an outer flocking layer and conducting flocking on the outer flocking layer through electrostatic flocking before the outer flocking layer is completely solidified. According to the tail box door spring surface spraying and flocking method, two layers of the waterproof and oilproof polyurethane flocking glue are spated on the surfaces of the tail box door springs to be flocked, flocks are located on the outer flockinglayer located on the outer side, and the stable and excellent flocking effect is ensured; and meanwhile, during daily use f the tail box door springs, it can be ensured that the tail box door springshave the excellent waterproof and oilproof effect, it is ensured that the flocking surface does not crack, and occurrence of abnormal touch sounds is avoided to the maximum extent.

Description

technical field [0001] The invention belongs to the field of auto parts, and in particular relates to a method for spraying and flocking the surface of a trunk door spring. Background technique [0002] Spring is a commonly used component in production and life. The spring can be deformed under the action of external force and return to its original shape after the external force is removed. In some applications, in addition to certain requirements for the material and mechanical properties of the spring, there are special requirements for the outer surface treatment fluid of the spring, such as the car tailgate spring, which is mainly used for the tailgate of the car. When opening and closing, it needs to make no sound when it touches other parts of the tail box door during the working process to avoid abnormal noise. At the same time, its appearance also needs a certain degree of aesthetics, so the surface of the tail box door spring usually chooses flocking deal with. H...

AI Technical Summary

Problems solved by technology

However, after the existing flocking process, the car trunk door spring has a certain aesthetic effect, but it is often affected by water vapor or lubricating oil in daily use, resulting in cracking of the flocking surface, which affects the appearance and produces Abnormal noise