an injection mold

Abstract

The invention provides an injection mold, which comprises a lower template, a square iron, a lower mold core, a rear mold core, an ejector assembly, a push assembly and an elastic part. A plate cavity is formed at the upper end of the rear mold core, and the middle part of the rear mold core Each is provided with a cavity hole, and the pushing assembly includes a push tube inner needle and a push tube, and the elastic part includes a cylinder, a guide head arranged at one end of the cylinder, and a plurality of side edges arranged at the other end of the cylinder. The rib is positioned, and the guide head fits with the end of the needle in the push tube. When processing the above-mentioned injection mold, snap the guide head of the elastic part into the end of the needle in the push tube, and make the positioning rib abut against the inner wall of the push tube, so that the cylinder is located at the center of the push tube, close the mold and inject plastic, so that the plastic A square plate is formed in the plate cavity, and a thick round rubber column is formed in the push tube in the cavity hole. Among them, the plastic-wrapped elastic parts form a thick round rubber column, so that there is no need for heat dissipation inside the thick round rubber column, which solves the problem of insufficient product strength. , The problem of product appearance deformation.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to an injection mold. Background technique [0002] In injection molding products, there is a structural product, which includes square plates and thick round rubber columns. The basic wall thickness of square plates is T. When processing, the product requires good front appearance and no basic defects. Among them, thick round rubber The diameter of the column is multiple times of T, the thick round plastic column is set at the root of the connection of the outer surface of the square plate, and the thick column is solid. [0003] The difficulty in processing this type of structural product is that the rubber at the root of the thick round rubber column is too thick. After the melt fills the mold cavity, the heat is concentrated and it is not easy to cool down; It takes a long time to cool, and there are serious shrinkage pit defects on the appearance of the thick round r...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an injection mold to solve the problem of insufficient product strength and deformation of the product appearance due to the thick round rubber column being too thick and difficult to cool when the existing injection mold produces products composed of square plates and thick round rubber columns. question

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