Blowing device for molded parts

Abstract

The invention discloses an air blowing device for a mold forming part. The air blowing device comprises a forming part and a movable air needle, wherein a ventilation channel used for introducing air is formed in the forming part; the front end of the ventilation channel penetrates through the molding surface of the forming part, and an air outlet is formed; and the movable air needle is movably arranged in the ventilation channel and can move between a closing position at which the air outlet is blocked so as to close the air outlet and an opening position at which the air outlet is opened so as to allow the air in the ventilation channel to be discharged outwards by virtue of the air outlet. Before the product is separated from the forming part, the movable air needle moves to the opening position, the air in the ventilation channel flows to the product from the air outlet, and the covering force of the product on the forming part is weakened by utilizing the air, so that assisted demolding can be realized, and a product pulling damage phenomenon can be reduced and even avoided when the product is separated from the forming part. Moreover, motion power is provided for the movable air needle by utilizing a spring and the air in the ventilation channel, and the aim of reducing the energy consumption can be achieved.

Description

technical field [0001] The invention relates to an air blowing device for molded parts. Background technique [0002] At present, in order to facilitate processing, various boxes (such as glove boxes of automobiles) are often processed by injection molding. In the injection molding process, the molding surface of the molded part (such as a molding slider, etc.) is often used to process the surface corresponding to the molding surface on the product, but some products cover a large area on the molding surface of the molded part. And the demoulding angle is small, causing when the product is separated from the molded part, the surface of the product is often scratched, thereby causing the product quality to be unqualified and far from meeting industrial requirements. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an air blowing device for molded parts, which can reduce the scratchi...

AI Technical Summary

Problems solved by technology

In the injection molding process, the molding surface of the molded part (such as a molding slider, etc.) is often used to process the surface corresponding to the molding surface on the product, but some products cover a large area on the molding surface of the molded part. And the demoulding angle is small, so when the product is separated from the molded part, the surface of the product often suffers from scratches, resulting in poor product quality and far from meeting industrial requirements

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