A rubber bush vulcanization mold

Abstract

The invention discloses a vulcanization mold for rubber bushings. A plurality of clutch mechanisms are arranged between the first upper mold plate and the second upper mold plate, which are used to bounce off and always connect the first upper mold plate and the second upper mold plate. The parts are embedded in the first upper formwork, the second upper formwork is provided with a plurality of second upper mold cavities, the middle formwork is provided with a plurality of middle mold cavities, and the lower formwork is provided with a plurality of lower molds for fixedly installing lower mold inserts Cavity, the upper mold insert part extends into the second upper cavity, the lower mold insert part extends into the middle cavity, the upper end of the lower mold insert and the intersection of the outer pipe are provided with multiple glue discharge ports at intervals, and the middle template is set There is a glue tank connected with the glue discharge port; its advantage is to prevent the bushing from hanging on the second upper template when the mold is opened, which is convenient for mold opening and picking; it ensures that the excess glue and gas are discharged into the glue through the glue discharge port In the groove, it is convenient to seal the rubber, which saves the work of repairing the waste edge in the later stage, improves the quality and pass rate of the bushing, and reduces the labor intensity of the workers.

Description

technical field [0001] The invention relates to a vulcanization mold, in particular to a rubber bushing vulcanization mold. Background technique [0002] A large number of flexible connections such as rubber bushings are used in modern automobile parts to meet the needs of vehicle shock absorption and noise reduction. A bushing commonly used at present includes two inserts, which are an outer tube and an inner tube with hobbing carburized iron. The manufacturing process is to put the two inserts into the cavity of the rubber bushing vulcanization mold first. Inside, the insert and the rubber are vulcanized and bonded together through a vulcanization process. [0003] The existing rubber bush vulcanization mold comprises a sprue bushing, a runner plate, an upper template, an upper mold insert, a middle template, a lower template, a lower mold insert and a backing plate. The upper formwork is provided with multiple upper mold cavities for installing upper mold inserts, the m...

AI Technical Summary

Problems solved by technology

For the rubber bushing vulcanization mold with this structure, although the rubber-sealed ribs are also designed at the intersection of the upper mold insert and the inner tube, due to the high hardness of the inner tube (up to HRC40-42) and too hard The mold cannot press the inner tube, and it is easy to wear the mold, and the upper end surface of the inner tube is equipped with 0.5mm deep teeth, and because the rubber is pervasive, it is difficult to seal the rubber, and the rubber is easy to enter during the injection process. in the bore of the inner tube

In this way, during the vulcanization process, the inner tube and the upper template are easy to get stuck or hang on the upper template when the mold is opened. Even if the product is opened and taken out, there are many waste edges, and the finished product needs to be repaired, which reduces the production efficiency.

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