Manufacturing process of automobile cover plate

Abstract

The invention provides a manufacturing process of an automobile cover plate. The manufacturing process comprises the following steps: laying a material: tiling a surface material on a net chain, positioning and nailing; flatly placing a PP (Propene Polymer) fly ash plate at a specified position of another net chain without fixing through nailing; adopting a retainer to retain the outer edge of a mix on the four sides; performing baking temperature softening: feeding the PP fly ash plate laid on the net chain into a baking box to perform the baking temperature softening, wherein the baking temperature is 200-400 DEG C and the baking temperature is 85-105 s; determining single-action drawing die blank holder stroke, wherein the size of the stroke guarantees that the plate is placed on the blank holder without lapping on a drawing male die and is 10-20 mm higher than a molded surface of the male die; when a single-action drawing die blank holder is ejected, the effective contact area of a slide guide surface of the blank holder is greater than 50-80 mm; upper and lower dies are guided by using a guide plate and are guided in for at least 50 mm before drawing is performed. According to the manufacturing process of the automobile cover plate, the rigidity of the cover plate is uniform, and early damage does not occur easily.

Description

technical field [0001] The invention relates to a manufacturing process of an automobile cover plate, belonging to the technical field of automobile parts manufacturing. Background technique [0002] The requirements for the roof of the car are generally relatively high, the surface quality is high, the rigidity is high, and the shape process is relatively complicated. When the roof is stretched, due to the unevenness of its plastic deformation, the rigidity of a certain part will often be poor. When the poor cover plate vibrates, it is easy to produce a hollow sound. After the car has run a certain amount of distance, it is easy to produce a clanging sound, causing early damage to the cover plate and making the passengers very uncomfortable. Contents of the invention [0003] The object of the present invention is to provide a manufacturing process of the automobile cover plate, which makes the cover plate rigid and uniform, and is not prone to early damage. [0004] In ...

AI Technical Summary

Problems solved by technology

[0002] The requirements for the roof of the car are generally relatively high, the surface quality is high, the rigidity is high, and the shape process is relatively complicated. When the roof is stretched, due to the unevenness of its plastic deformation, the rigidity of a certain part will often be poor. When the poor cover plate vibrates, it is easy to produce a hollow sound, so that after the car has run a certain amount of distance, it is easy to produce a clanging sound, causing early damage to the cover plate and making the passengers very uncomfortable.