Liquid silicone rubber injection mould

Abstract

The invention discloses a liquid silicone rubber injection mould. The liquid silicone rubber injection mould comprises an upper mould and a lower mould, wherein a lower mould cavity for holding a plastic piece to be machined is formed in the lower mould. The liquid silicone rubber injection mould is characterized in that the upper mould consists of a first upper mould and a second upper mould; an upper mould cavity is formed in the bottom of the first upper mould; the second upper mould is fixedly arranged inside the upper mould cavity; the adhesion part of the lateral wall of the second upper mould and the inner lateral wall of the upper mould cavity is used as a mould joint; a sealant face is formed at the periphery of the upper mould cavity and on the upper edge of the first upper mould; the sealant face and the plastic piece are tightly adhered to form a sealing area for injecting silicone rubber in a mould closing process. According to the liquid silicone rubber injection mould, the adhesion part of the lateral wall of the second upper mould and the inner lateral wall of the upper mould cavity is used as the mould joint, so that one part of the silicone rubber piece is individually machined. Therefore, not only can the machining difficulty be reduced, but also air discharge can be realized through the middle joint and the mould repairing and modification in a later period are convenient. According to the liquid silicone rubber injection mould, the injection effect of silicone rubber is good, and the quality of products in scale production is stable and reliable.

Description

technical field [0001] The invention relates to a mold structure, in particular to a liquid silicone rubber injection mold. Background technique [0002] Liquid silicone rubber injection mold is a kind of thermosetting plastic mold. Liquid silicone rubber can be used as molding raw material, which is fed into the silicone injection molding machine through a special mixing system, and the heated liquid silicone rubber is injected by the silicone injection molding machine at a certain pressure speed. In order to obtain silicone products in the mold, fully automatic production can be realized, which has the advantage of high efficiency. [0003] At present, the silicone parts used for waterproof, dustproof and drop-resistant for mobile phones and electronic products are mostly made of liquid silicone rubber injection molds. The traditional liquid silicone rubber injection mold silicone generally has the disadvantage of unreasonable parting surface selection, which leads to mold...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a liquid silicone rubber injection mold, which has the characteristics of low processing difficulty, good silicone injection effect and reliable and stable quality of processed products, so as to solve the problems existing in the liquid silicone rubber injection mold in the prior art

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