An injection mold for automobile rearview mirror gasket

Abstract

The invention discloses an injection molding mold for an automobile rearview mirror gasket. The injection molding mold comprises a first sprue gate, a second sprue gate, a first group of splitter plates, a second group of splitter plates, a first group of movable mold cores and fixed mold cores and a second group of movable mold cores and fixed mold cores, wherein the first group of splitter plates are connected with the first sprue gate; the second splitter plates are connected with the second sprue gate; the first group of movable mold cores and fixed mold cores are arranged below the first group of splitter plates and are used for receiving casting materials of the first sprue gate; the second group of movable mold cores and fixed mold cores are arranged below the second group of splitter plates and are used for receiving the casting materials of the second sprue gate; the second group of movable mold cores are the same as the first group of movable mold cores in shape and are slightly smaller than the first group of movable mold cores in dimension; the first group of movable mold cores and fixed mold cores form a first group of annular hollow cavities; the second group of movable mold cores and fixed mold cores form a second group of annular hollow cavities; the second groups of annular hollow cavities are the same as the first group of annular hollow cavities in shape, and are slightly smaller than the first group of annular hollow cavities in dimension; and a third group of annular hollow cavities are also formed in the upper surfaces of the second group of annular hollow cavities in an overlapping manner. According to the injection molding mold, the cost of production equipment is reduced; dual-material injection molding is achieved; and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of manufacturing molds for spare parts for automobiles, in particular to an injection mold for gaskets for rearview mirrors of automobiles. Background technique [0002] With the development and progress of society, fashionable and durable automobile products are more and more favored by consumers and become the mainstream of the market. Such products are inseparable from high-quality double-material / two-color injection molds. The molding principle of this technology is to plasticize two plastics of different materials or colors in two injection molding machine barrels, and then through the sequential injection of the injection molding machine and the conversion of the mold cavity , inject two kinds of molten materials into the cavity of the mold respectively, and form plastic products with two kinds of materials or colors. [0003] The traditional two-color injection mold consists of two fixed mold cores and two mov...

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Problems solved by technology

[0004] For the above-mentioned traditional double-material / two-color injection mold, after the semi-finished product is rotated 180° around the axis, the movable and fixed molds of the mold must match, and the design must take into account how to position and match. The mold design is more complicated, and the processing technology requirements are more refined. In addition, a special double-material / two-color injection molding machine must be used, and the cost of the entire set of injection molding equipment will be doubled accordingly; and because the shape and size of the two sets of movable molds are the same, and the size of the semi-finished product will be slightly reduced after cooling, the first in a large cavity. Glue overflow will be found during secondary injection molding, which will affect the surface finish of the finished product

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