A rubber product mold core mold

Abstract

The invention discloses a core die of a rubber product die. The core die comprises an upper core die and a lower core die, wherein holes are formed in the upper core die and the lower core die; the lower part of the upper core die is provided with a stepped boss or a concave groove; the upper part of the lower core die is correspondingly provided with a concave groove or a stepped boss; the concave groove or the stepped boss of the lower core die is sleeved on the stepped boss or the concave groove of the upper core die; and the joint part of the lower core die and the upper core die is communicated with the holes in the centers of the upper core die and the lower core die. In order to solve the bubble problem, the core die does not take general technical measures, but adopts a technical scheme for eliminating or reducing bubble-induced defective products by a splitting technical principle according to the core die structure, wherein a conventionally designed solid core die is decomposed into an exhaust core die combined by parts with cavities, so that gas can smoothly escape during production, and bad residues and defects are absent on the surface of rubber products in contact with the exhaust core die. The core die has the advantages of being simple and compact in structure, convenient for integration and standard design and manufacturing and beneficial to reduction of an installation space.

Description

technical field [0001] The invention relates to a rubber product mold core mold. Background technique [0002] During the production process of rubber products, quality defects such as air bubbles on the surface or inside of rubber products may be caused by mold, temperature, pressure, formula design and other factors. Bubbles are a common adverse phenomenon, which can affect the appearance quality of the product in the slightest, and cause scrapping of the product in severe cases, waste labor and materials, and increase manufacturing costs. There are many reasons for inducing bubbles. For example, the residual gas in the rubber will expand and produce bubbles under appropriate temperature and other conditions; the moisture on the surface of the rubber or the mold may also generate bubbles under certain conditions; The gas cannot be discharged smoothly during vulcanization, which may also promote the occurrence of air bubbles. The above three situations, in actual producti...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a rubber product mold core mold for solving or improving the production of defective rubber products caused by air bubbles

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