Accurate-feeding type rubber mold and vulcanization operation method

Abstract

The invention provides an accurate-feeding type rubber mold and a vulcanization operation method. The rubber mold comprises a vulcanized mold, an upper pre-forming die, a feeding plate, a lower pre-forming mold and an ejection plate. A pressing boss is arranged on the upper pre-forming mold, a feeding cavity and a pre-forming cavity are formed in the feeding plate, and a guiding boss and an ejection pin are arranged on the ejection plate. The outlet end of the pre-forming cavity is in one-to-one correspondence to the pouring gate of a vulcanized mold cavity in the vulcanized mold, and the caliber of the outlet end of the pre-forming cavity is smaller than or equal to the caliber of the pouring gate of the inlet end of the vulcanized mold cavity. The rubber vulcanization operation method includes the steps that rubber raw materials are pre-pressed to pre-formed rubber materials, and the pre-formed rubber materials are ejected into the vulcanized mold cavity. The rubber raw materials can be accurately fed and prevented from being wasted in the feeding process, the rubber product formed in a vulcanized mode is free of slitter edges, the appearance quality of the formed rubber product is guaranteed, and the production cost for the rubber product is lowered.

Description

technical field [0001] The invention relates to the technical field of rubber molds, in particular to an accurate feeding type rubber mold and a vulcanization operation method. Background technique [0002] In the process of using the vulcanization mold to produce rubber products, the vulcanization mold needs to set different vulcanization temperatures according to different rubber materials. The rubber raw materials are directly fed into the cavity of the vulcanization mold, and the rubber in the cavity is vulcanized by high temperature. This feeding method cannot guarantee the accuracy of rubber raw material feeding, and its defects mainly lie in the following two points: [0003] 1. If the feeding is insufficient, although the rubber raw material falling into the cavity of the vulcanization mold can be heated and vulcanized well, the product after vulcanization and molding cannot meet the specified qualification standards, which directly leads to a significant increase in...

AI Technical Summary

Problems solved by technology

This feeding method cannot guarantee the accuracy of rubber raw material feeding, and its defects mainly lie in the following two points:

[0003] 1. If the feeding is insufficient, although the rubber raw material falling into the cavity of the vulcanization mold can be heated and vulcanized well, the product after vulcanization and molding cannot meet the specified qualification standards, which directly leads to a significant increase in the scrap rate of the final molded rubber product. Increase, but increase the production cost of rubber products

[0004] 2. If too much material is fed, the rubber raw material falling into the cavity of the vulcanization mold cannot be heated and vulcanized well, which will affect the molding quality of the vulcanized product, and the final rubber product is also prone to waste edges, which must be post-processed manually operation to remove the waste edge of the molded product, thereby increasing the labor cost, and the manual removal of the waste edge is easy to damage the appearance quality of the molded product, and its operation efficiency is also low; in addition, the rubber raw materials scattered outside the cavity of the vulcanization mold will also Due to the high temperature of the vulcanization mold, it is melted and bonded to the mold, resulting in waste of rubber raw materials, which is not conducive to the production cost control of rubber products.

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