Mold 3D exhaust system for molding thin-wall plastic products

Abstract

The invention discloses a mold 3D exhaust system for molding thin-wall plastic products. Multiple exhaust ports are formed in a mold core, and are distributed in front and back rows; along each exhaust port, a vertical exhaust way is provided in an extending manner; the front row of vertical exhaust ways communicate through a front longitudinal air way horizontally arranged; the back row of vertical exhaust ways communicate through a back longitudinal air way; the front longitudinal air way and the back longitudinal air way extend to the side surfaces of an exhaust gradient gap part to form longitudinal exhaust ports, and communicate through a transverse air way therebetween; the transverse air way extends to the side surface of the exhaust gradient gap part to form a transverse exhaust port; and a main exhaust air way communicating with the transverse air way communicates with the external of a mold. When the mold is used for injection molding, gas in a molding cavity is quickly and timely exhausted outside the cavity, so that the molding filling time and the molding period are shortened by 35% or above, the exhaust problem is thoroughly solved, and such defects as gas marks and burns on the surfaces of products caused by gas trapping are prevented.

Description

technical field [0001] The invention relates to a mold 3D exhaust system for forming thin-walled plastic products. Background technique [0002] At present, the production of thin-walled molding molds is characterized by fast injection speed, very thin products, and the cavity must be filled quickly in a short time, which puts forward higher requirements for rapid exhaust of the mold. Products <0.008mm will not have long flash. However, this depth cannot discharge all the gas out of the cavity in a short period of time during high-speed injection, resulting in product quality problems such as gas marks, burnt, etc., and the exhaust depth is slightly deeper. Flashing occurs. [0003] The right amount of exhaust depth is very contradictory at present, resulting in the inability to take into account product quality, high incidence of defective products, affecting product delivery, and reducing technical competitiveness. Contents of the invention [0004] The purpose of t...

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Problems solved by technology

[0002] At present, the production of thin-walled molding molds is characterized by fast injection speed, very thin products, and the cavity must be filled quickly in a short time, which puts forward higher requirements for rapid exhaust of the mold. Products <0.008mm will not have long flash. However, this depth cannot discharge all the gas out of the cavity in a short period of time during high-speed injection, resulting in product quality problems such as gas marks, burnt, etc., and the exhaust depth is slightly deeper. flashing

[0003] The right amount of exhaust depth is very contradictory at present, which leads to the inconsistency in product quality, high incidence of defective products, affecting product delivery, and reducing technical competitiveness

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