Injection molding gas-assisted mold concealing overflow material handle mechanism and overflow material storage method

Abstract

Injection molding gas-assisted mold hides overflow material handle mechanism and overflow material storage method, including upper doubler plate and lower doubler plate, cavity is installed under the upper doubler plate, and core is installed above the lower doubler plate, characterized in that: installation on the cavity There is an insert and a material handle assembly, and a core-pulling hole is opened in the insert; the material handle assembly includes a needle and a telescopic device, and the needle is inserted into the core-pulling hole for installation, and can be installed in the core-pulling hole under the expansion and contraction of the telescopic device. Axial sliding; there is also an overflow hole in the insert, the overflow hole is connected with the middle part of the core-pulling hole, and the axial sliding of the needle can close the overflow hole or communicate with the core-pulling hole. The present invention adopts the structure of installing the insert and the material handle assembly on the cavity, moves the needle back and blows air into the mold, so that the excess plastic is blown into the core-pulling hole, and then flows out through the overflow hole, and the pumping The forward movement of the needle can push the plastic in the core-pulling hole back into the mold, thereby hiding the material handle, which can not only improve production efficiency, but also increase the compactness of injection molded products and improve product quality.

Description

technical field [0001] The invention relates to the field of injection molds, and more specifically relates to a mechanism for hiding overflow material in an injection molding gas-assisted mold and a method for storing overflow material. Background technique [0002] Gas-assisted injection molding is used to manufacture plastic parts. After the injection molding of the normal gas-assisted mold is completed, there will be material handles on the gas-assisted plastic product. The traditional method is to trim the product manually, and the use of manual labor will increase the additional cost and cost of the OEM. time. Moreover, for normal injection molded gas-assisted products, when the material is left on the product, even if it is trimmed manually, it will leave ugly gate marks on the product. Therefore, if the process can be used to remove or hide the handle during the injection molding process, the production efficiency and product quality will be greatly improved. Cont...

AI Technical Summary

Problems solved by technology

[0002] Gas-assisted injection molding is used to manufacture plastic parts. After the injection molding of the normal gas-assisted mold is completed, there will be material handles on the gas-assisted plastic product. The traditional method is to trim the product manually, and the use of manual labor will increase the additional cost and cost of the OEM. time

Moreover, for normal injection-molded gas-assisted products, when the material is left on the product, even if it is trimmed manually, it will leave ugly gate marks on the product.

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