Vulcanization forming mold of center line rubber butterfly valve seat

Abstract

The invention provides a vulcanization forming mold of a center line rubber butterfly valve seat. The vulcanization forming mold comprises an outer mold, an inner mold, an upper mold, a lower mold, anupper mold core and a screw rod assembly, wherein the inner mold and the outer mold are arranged on the lower mold and are fixedly connected through the screw rod assembly, the upper mold core is placed on the inner mold, a mold cavity is formed among the outer mold, the inner mold and the upper mold core, a material loading part is arranged on the upper surface of the upper mold core and the upper surface of the outer mold, a material extruding part is arranged in the material loading part, and the material extruding part is used for applying pressure through a press machine. The vulcanization forming mold has the beneficial effects that 1, a worker only needs to put milled rubber materials into the material loading part, and the rubber materials are pressed into the mold cavity througha press machine, so that the labor intensity is reduced; 2, the material loading part, the material pressing part and the press machine are used for pressing the rubber materials into the mold, so that the mold cavity can be filled with the rubber materials, and the pressed valve seat does not generate defects caused by insufficient rubber materials; and 3, the valve seat is high in yield, raw materials are saved, and the cost is reduced.

Description

Technical field [0001] The invention relates to a mold, in particular to a vulcanization molding mold for a valve seat. Background technique [0002] At present, the valve seat vulcanization molding mold of the centerline rubber-lined butterfly valve is mainly composed of main parts such as an outer mold, an inner mold, an upper mold, a lower mold, and a screw assembly. When the mold is assembled and ready to vulcanize the valve seat, the rubber raw material is first made into small flat pieces, then manually put into the cavity of the mold, and finally placed on a flat vulcanizing machine for vulcanization. Since the rubber raw material is put into the cavity of the mold by hand, the rubber raw material cannot completely fill the mold cavity, resulting in defects in the vulcanized valve seat due to insufficient rubber material, so that the valve seat is qualified for one-time molding. The rate is reduced and the manufacturing cost is increased. Contents of the invention ...

AI Technical Summary

Problems solved by technology

Since the rubber raw material is put into the mold cavity by hand, the rubber raw material cannot completely fill the mold cavity, resulting in defects in the vulcanized valve seat due to insufficient rubber material, so that the valve seat is qualified for one-time molding. rate decreases, increasing manufacturing costs

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