A new type of injection mold for the production of plastic products with mold opening and anti-marking

Abstract

The invention discloses a mold opening impression prevention novel injection mold for plastic product production. The mold opening impression prevention novel injection mold for plastic product production structurally comprises a demolding assisting device, a base, a lower mold, an upper mold, an air flow main channel, limiting blocks and air flow branch channels. The four corners of the bottom surface of the upper mold are matched with locating holes at the four corners of the top surface of the lower mold through locating columns correspondingly. Compared with the prior art, the mold openingimpression prevention novel injection mold for plastic product production has the beneficial effects that air is compressed through the polarity repulsion and attraction principle; the area of the air flow channels is limited, air flow is concentrated and acts on a movable disk to expand the area of the air flow main channel, channel openings of air flow branch channel opening appearance and disappearance startup groups, and the air flow is guided out from the channel openings of the air flow branch channels to act on plastic products. Cooling on the plastic products is accelerated. Moreover,the plastic products can be ejected by the air flow to be subjected to rapid demolding. An ejector rod ejection method is abandoned. The plastic products are efficiency protected against impression.The attractiveness of the plastic products can be ensured. Manufacturing resources are saved. The manufacturing cost is lowered.

Description

technical field [0001] The invention relates to the technical field of injection molds, in particular to a new type of injection mold for the production of plastic products that prevents mold from leaving marks. Background technique [0002] Injection mold is a tool for producing plastic products. Since the colder the plastic material is, it will harden and shrink. Therefore, it is often necessary to push out the molded plastic product when opening the mold. [0003] Most of the existing injection molds use ejector pins to eject the molded plastic products, but the cavity pressure is too high, the mold rigidity is insufficient, and the cooling time of the mold is too short, which will lead to high mold temperature in some parts and unreasonable mold design. It will cause marks on the ejector pin on the formed product, which will affect the appearance of the product, and may even become a defective product due to the marks, wasting production resources and increasing producti...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing injection molds use ejector pins to eject the molded plastic products, but the cavity pressure is too high, the mold rigidity is insufficient, and the cooling time of the mold is too short, which will lead to high mold temperature in some parts and unreasonable mold design. It will cause marks on the ejector pin on the formed product, which will affect the appearance of the product, and may even become a defective product due to the mark, which wastes production resources and increases production costs.

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