Injection mold core with air suction, discharge and rapid cooling functional structure

Abstract

The invention provides an injection mold core with an air suction, discharge and rapid cooling functional structure. The injection mold core consists of a core body (1), a ventilated surface (2), an air suction and discharge channel (3) and a heat-conductive pin (4). In the injection mold core, the technical scheme that: the core body is made from a beryllium copper material with high heat conductivity; the ventilated surface which is made of porous ventilated steel is fixedly inlaid at the top of the core body; the air suction and discharge channel which is connected with a mold is reserved in the core body; and the heat-conductive pin which is directly inserted into a mold cooling water pipe is arranged at the bottom of the core body is adopted, so that the problems of low qualification rate, high cost and poor quality consistency of products in the molding of small-diameter deep-cavity injection products in the prior art are solved. The injection mold core with the air suction, discharge and rapid cooling functional structure provided by the invention fulfills the aims of improving the qualification rate, reducing the cost and ensuring the quality consistency of the products of the molding of the small-diameter deep-cavity injection products by increasing cooling rate and improving air suction and discharging conditions of the core body structurally.

Description

technical field [0001] The invention relates to a core structure of an injection mold, in particular to an injection mold core with a suction and exhaust and rapid cooling function structure applied to the movable mold part of the injection mold. Background technique [0002] The core is the component that forms the back or internal surface of the injection molded product in the injection mold. The core in the prior art is made of steel, which does not have the functions of suction, exhaust, and cooling; The air in the formed cavity is discharged through the parting surface of the core and the cavity; when ejected from the mold, the product coated on the core is formed by the dynamic force of the core draft angle during the push. The slit sucks in the air and demoulds; the cooling of the core is through the cooling channels set in the movable template and the core. However, the core used to form small-diameter deep-cavity injection molding products cannot be equipped with c...

AI Technical Summary

Problems solved by technology

However, the core used to form small-diameter deep-cavity injection molding products cannot be equipped with cooling water channels due to its small size. It can only rely on the heat conduction of the steel itself to cool slowly through the movable platen with cooling water channels, resulting in molding production due to waiting for cooling. Low efficiency; in addition, it is difficult to exhaust and inhale air at the top of the deep cavity of the product, and it is easy to cause air retention during molding injection, and vacuum coating occurs between the product and the core when the mold is ejected; In each molded product, some products will have defects of air resistance and lack of material and defects of vacuum coating and demoulding damage, which makes it difficult to maintain consistent product quality, low pass rate of products, and high overall cost

Therefore, due to the slow cooling of the small-diameter deep-cavity core in the prior art and poor suction and exhaust, the molding of the small-diameter deep-cavity injection molding products in the prior art has the problems and shortcomings of low pass rate, high cost, and poor product quality consistency.

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