Double-color rubber oil seal mold

Abstract

The invention discloses a double-color rubber oil seal mold. The double-color rubber oil seal mold comprises a pressure injection mold, an upper mold, a middle mold, a lower mold and a mold core, wherein the upper mold is located below the pressure injection mold; the middle mold and the mold core are arranged between the upper mold and the lower mold; a first material cavity and a second materialcavity which are sunken downwards are formed in the top end of the upper mold; the bottom structure of the pressure injection mold is matched with the first material cavity and the second material cavity; the middle mold, the lower mold and the mold core are matched to form a concave cavity; edge tearing grooves are formed in the joint of the lower mold and the middle mold and the joint of the lower mold and the mold core; an annular boss is arranged at the bottom of the upper mold; the annular boss extends into the concave cavity of the lower mold to form a first cavity used for containing an inner sealing body together with the side surface of the mold core; and the annular boss extends into the concave cavity of the lower mold to form a second cavity for accommodating an outer sealingbody together with the side surface of the middle mold. The invention belongs to the technical field of oil seal molds, and particularly relates to the double-color rubber oil seal mold capable of simultaneously vulcanizing and molding rubber materials with two different colors in the same oil seal product in the mold.

Description

technical field [0001] The invention belongs to the technical field of oil seal molds, in particular to a two-color rubber oil seal mold. Background technique [0002] Oil seal is the customary title of general seals, simply speaking, it is the seal of lubricating oil. As the name implies: The oil seal is a mechanical element used to seal oil (oil is the most common liquid substance in the transmission system, and also generally refers to the general liquid substance). Oil leaks. The sealing of the oil seal is formed by the interference fit between a flexible sealing element (leather, rubber, polytetrafluoroethylene, polychlorotrifluoroethylene or polyimide, etc.) and the rotating shaft. [0003] The oil seals in the prior art generally include a skeleton and a sealing body, and the sealing body includes an inner sealing body and an outer sealing body. The inner sealing body and the outer sealing body of the oil seal in the prior art are generally the same rubber material,...

AI Technical Summary

Problems solved by technology

[0003] The oil seals in the prior art generally include a skeleton and a sealing body, and the sealing body includes an inner sealing body and an outer sealing body. The inner sealing body and the outer sealing body of the oil seal in the prior art are generally the same rubber material, and in In China, the requirements for the rubber material of the inner seal body and the outer seal body are often different. If the same rubber material is used for the inner and outer seal bodies, the material will be wasted to a certain extent, and the cost of the oil seal will also be increased.

[0004] At present, the mold used to press the two rubber oil seals on the protective sleeve has a complex structure and troublesome operation. It needs a second press to press the two-color rubber oil seal to the two positions of the protective sleeve, which wastes a lot of materials and consumes a lot of energy such as electricity.

Excess plastic will overflow and affect the quality of the finished product; in addition, there will often be air in the finished product, which will also lead to poor quality of the finished product

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