Tech, for producing sebific duct of silicon rubber and special mould core thereof

Abstract

A technology for preparing silicon rubber pipe includes such steps as directly forming the rubber pipe blank on the surface of a rubber bag suitable for the internal diameter of rubber pipe, putting them in the cavity of mould, closing the mould, applying pressure to internal space of rubber bag, sulfurizing, releasing internal pressure, and removing said rubber bag. Said rubber bag is just its dedicated moulding core.

Description

technical field

[0001] The invention relates to a novel silicon rubber hose production process. Background technique

[0002] The existing production process of silicone rubber hose mainly adopts preforming of hard core (such as iron core, aluminum core, etc.) or directly discharges material (silicone rubber) in the mold cavity, and then pressurizes the mold to make the silicone rubber Fill the cavity for vulcanization. This production process has the following fatal defects in the production of rubber hoses: First, when manufacturing corrugated hoses, the core must have corrugated protrusions consistent with the mold cavity, so there is a problem of difficult demoulding in the later stage of production. It is convenient to demould, so that the mold core is connected by several core segments (as shown in Figure 1), but due to the seams at the joints of the core segments, there are burrs and burrs on the inner wall of the produced product (as shown in Figure 1). 3), if the ...

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