Multi-runner automobile part injection mold and machining method

Abstract

The invention discloses a multi-runner automobile part injection mold. The multi-runner automobile part injection mold comprises an injection plate, a concave mold plate, a convex mold plate and a demolding plate, all of which are sequentially attached to one another. An injection cavity is formed in the middle of the side, away from the concave mold plate, of the injection plate, an injection connecting pipe communicating with the injection cavity is inserted into the injection plate, and multiple injection runners are symmetrically formed in the cavity wall of the injection cavity. The invention further discloses a multi-runner automobile part injection molding machining method. The multi-runner automobile part injection molding machining method comprises the following steps of melt injection, multi-runner filling, double-temperature cooling and forming and demolding. The injection molding speed is increased through simultaneous injection molding of the multiple runners, the demolding difficulty is reduced through high-low-temperature partitioned cooling, the fluidity of molten plastic during demolding is reduced, overflowing is avoided, the re-hot-melting speed of the plastic is increased, and the injection molding efficiency is improved; and through reverse injection molding of the convex mold bent runners, the end face is located on the narrow edge of formed plastic, the flatness of large-area inner and outer surfaces is kept, and the quality of injection molded products is improved.

Description

technical field [0001] The invention relates to the field of auto parts production, in particular to a multi-channel auto parts injection mold and a processing method thereof. Background technique [0002] With the improvement of the family economy, more and more families buy at least one car for transportation. The huge demand for cars requires auto manufacturers to increase production capacity and improve efficiency, and auto manufacturers need timely supply of auto parts. Most parts in cars Both require the use of injection molding technology, and optimizing the injection mold can increase the production capacity of parts. [0003] Existing injection molds for auto parts are usually single-channel injection molding, that is, injecting molten plastic into the mold through one channel. , the broken surface is usually located on the outer surface of the part, which affects the flatness, and affects the processes such as painting, and after cooling and ejecting the mold, all...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the disadvantages in the prior art that the single-channel injection molding is slow, the injection molding section is located on the outer surface of the molding body, which affects the flatness, and after cooling and molding, it needs to contact the cooled plastic in the molten flow channel again to affect the injection molding efficiency. Multi-channel auto parts injection mold and processing method thereof

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