Injection mold facilitating vacuum-pumping

Abstract

The invention discloses an injection mold facilitating vacuum-pumping. The injection mold comprises an upper mold and a lower mold, wherein an injection mold cavity is formed when the upper mold and the lower mold are matched; a feeding hole is formed in the top of the upper mold; a sealing ring structure is arranged between the upper mold and the lower mold and arranged on the periphery of the injection mold cavity; the sealing ring structure comprises a sealing ring and a sealing ring groove which are in clearance fit; the sealing ring is arranged on the lower surface of the upper mold; and the sealing ring groove is formed in the upper surface of the lower mold. The disclosed injection mold facilitating vacuum-pumping is reasonable in structural design; and the sealing ring structure added between the upper mold and the lower mold can effectively improve the sealing condition during vacuum-pumping operation of the mold, so that better and more stable vacuum degree can be obtained by the injection mold cavity faster, and the finished product quality of a plastic injection product is improved.

Description

technical field [0001] The invention relates to an injection mold, in particular to an injection mold with excellent sealing performance and convenient vacuuming operation, which belongs to the technical field of molds. Background technique [0002] Injection mold is a tool for producing plastic products, and it is also a tool for giving plastic products complete structure and precise dimensions. The injection mold consists of two parts, the movable mold and the fixed mold. The movable mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form the gating system and the mold Cavity, when the mold is opened, the movable mold and the fixed mold are separated to take out the plastic product. There are many types of injection molds, which can be divided into thermosetting plastic molds and thermo...

AI Technical Summary

Problems solved by technology

The current injection molds often have problems such as insufficient cavity filling, compressed air burns on the product, streamlines on the surface of the product, and focal spots during the injection molding process. The main cause of these problems is poor cavity exhaust. Open air vents on the surface and add thimbles to the upper mold, but the effect of this measure is not ideal, the production process is unstable, and the molding quality of injection molded products is not high

For this reason, people have developed a vacuum technology, which can effectively avoid the phenomenon of insufficient filling of raw materials and air burns, but the current technology is not ideal in terms of cavity sealing performance, and the vacuum degree of the mold is low, which directly affects the quality of injection molded products. Finished product quality

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