Method for improving buckling deformation of automobile headlight mask

Abstract

The invention relates to a method for improving buckling deformation of an automobile headlamp mask, and belongs to the field of automobile lamp manufacturing. The method comprises the following specific steps: designing a product, designing a mold, optimizing a mold, testing a mold, confirming the stability of an injection molding process, correcting mold flow analysis deviation, manufacturing pre-deformation data, copying a mold core and testing the mold again. According to the invention, through the analysis of factors influencing buckling deformation of the automobile headlight, the injection molding process parameters are subjected to analogue simulation and reciprocating correction, so buckling deformation generated in the manufacturing process of the automobile headlight mask is overcome, and the part yield of the automobile headlight mask is increased; meanwhile, the machining process precision of the automobile headlight mask is greatly improved, the production cost is reduced, and economic profits are increased.

Description

technical field [0001] The invention belongs to the field of automobile lamp manufacturing, and in particular relates to a method for improving the warpage and deformation of an automobile headlight mask. Background technique [0002] Automobile headlights are an important part of automobiles. They are installed at the front of the vehicle body and have both high functional requirements and high appearance requirements. The headlight mask is completely curved and irregular, and needs to be matched with parts such as the grille, fender, roof cover, front bumper, etc. Some cars also need to be matched with the grille lamp, and the matching accuracy is particularly high. Therefore, the single-piece dimensional accuracy of the automobile headlight mask is required to be particularly high. However, since automotive headlight covers are injection molded from polycarbonate material, the inherent properties of the plastic material cause the part to shrink and warp. The greater the...

AI Technical Summary

Problems solved by technology

These characteristics and constraints are difficult to eliminate, so the headlight mask has the phenomenon of warping and deformation

[0003] At present, mainstream vehicle customers generally require the deviation of the matching surface to be ±0.5mm. The existing technology cannot completely achieve the deviation of the parts within ±0.5mm. The only way is to adjust the process, adjust the process to the limit, and then , allowing customers to accept deviations, which also greatly reduces the designer's design, making the actual production of vehicles less than perfect design effect

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