A kind of automobile bumper mold

Abstract

The invention provides a die of a vehicle bumper. The die comprises a die base, wherein a groove for containing an interior drawer structure is formed in the die base; the interior drawer structure comprises an interior drawer block and a wedge block; the interior drawer block is less than the groove of the die base in width; the interior drawer block is arranged inside the groove in the width direction of the groove in a sliding manner; a plurality of concave parts and bulges, which are arranged at intervals, are arranged on one side face, which departs from the lateral wall in the width direction of the groove, of the interior drawer block; the wedge block is arranged inside the groove along the length direction of the groove in the sliding manner; one side surface of the wedge block in the width direction is matched with the lateral wall of the groove; the other side surface of the wedge block in the width direction is matched with the interior drawer block; a plurality of pits and beads, which are arranged at intervals, are arranged on the matched assemble surfaces of the wedge block and the interior drawer block; the pits and the beads correspond to the concave parts and the bulges in position; the beads are not more than the concave parts in width. The die provided by the invention has the advantages of simple structure and convenience in de-molding; the elastic transformation is prevented due to the interior drawer block; a cavity is stably filled in the injection molding process; a product of the bumper is attractive in molding.

Description

technical field [0001] The invention relates to a mold, in particular to a mold with side flange structures on both sides of an automobile bumper, and belongs to the field of plastic molds. Background technique [0002] With the development of the automobile industry, consumers have higher and higher requirements for the appearance quality of automobiles. The bumper is the main exterior part of the car. Due to the complex structure and large size of the bumper product, the mold used for production is heavy in tonnage and the cost of mold development is high. To ensure the beautiful appearance of the production, the mold structure design is in the mold development process Extremely important. [0003] According to the parting line, the injection mold of the bumper has two structures: inner parting and outer parting. The outer parting structure usually has a sloping roof structure, an outer pull structure and an inner draw structure. Among them, the structural design of the...

AI Technical Summary

Problems solved by technology

However, since the positioning blocks are only provided at both ends of the inner drawing block, there is still a large gap in the middle between the inner drawing block and the side wall of the groove of the mold base, and the inner drawing block is easy to bend under the action of injection molding force during production. Deformation, splicing lines form a step difference, and the product produces a dark mark on the appearance, which affects the appearance of the product

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