Automobile door interior trimming plate manufacturing technology

Abstract

The invention discloses an automobile door interior trimming plate manufacturing technology. The technology sequentially comprises the following steps: interior trimming plate skin and an injection molding interior trimming framework are obtained through thermoplastic polyolefin skin male mold formation; the skin is bonded with the framework in a foaming mode; a whole foaming element formed after the skin is bonded with the framework is milled; the thermoplastic polyolefin skin male mold formation is characterized in that thermoplastic polyolefin coiled materials are heated up and softened, and are sent into a vacuum formation device for male mold vacuum formation; the bonding between the skin and the framework in the foaming mode is characterized in that polyurethane foamed materials are poured on the inner side of the skin of an interior trimming plate, and are bonded with the framework; and the milling is characterized in that an automatic milling robot mills technology edge of a foaming element. The technology enables the surface of the interior trimming plate to have good handfeel; the size is accurate; the generation of a combined seam of the interior trimming plate and a sheet metal part in the subsequent production is reduced; the service life of a mold is prolonged; and the production cost is lowered.

Description

technical field [0001] The invention relates to a manufacturing process of an automobile interior trim, more specifically, to a manufacturing process of an automobile door trim panel. Background technique [0002] Existing automotive door trim manufacturing processes usually include direct mold injection molding with leather texture, vacuum compounding of PVC skin and injection-molded skeleton, and foaming process of slush-molded skin and injection-molded skeleton. [0003] Direct injection molding with molds with leather texture: This process is simple, the parts feel bad and the surface is stiff. Generally, this process will be discarded in mid-to-high-end models. Sprayed soft touch paint to alleviate the rough feel and texture, but the effect is still not satisfactory. [0004] Vacuum compounding of PVC skin and injection molded skeleton: Compared with direct injection molding with leather texture, the vacuum compounding technology of PVC skin has improved in terms of te...

AI Technical Summary

Problems solved by technology

Moreover, the more follow-up processes are added after the substrate is formed, the more unfavorable it is to control the size of the gap.

However, the cost of slush plastic skin is too high. It is suitable for the skin forming process of a single instrument panel. For the processing of automotive door trim panels, it needs 4 molds, and it is not ideal in terms of environmental protection of the production process and skin transportation cost.