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Rapid vulcanization forming process for rubber parts, and die

A technology of rapid vulcanization and molding process, applied in the field of rubber vulcanization, can solve the problems of low efficiency of secondary vulcanization treatment, achieve the effects of shortening vulcanization time, improving quality, and dense microstructure

Active Publication Date: 2016-08-10
HEFEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to overcome the deficiencies of the prior art, the present invention provides a rapid vulcanization molding process for rubber parts to solve the problem of low efficiency of secondary vulcanization treatment in the prior art. Another purpose of the present invention is to provide a special mold for this process

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  • Rapid vulcanization forming process for rubber parts, and die

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Embodiment Construction

[0021] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or It is implied that the device or element referred to must have a specific orientation, specific orientation structure and operation,...

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Abstract

The invention relates to the field of rubber vulcanization, and particularly relates to a rapid vulcanization forming process for rubber parts, and a die. According to the rapid vulcanization forming process disclosed by the invention, an injection vulcanization process is adopted, a used injection die-pressing chamber is divided into an upper part and a lower part, the upper part is a pre-vulcanization cavity, the lower part is a vulcanization cavity, and a pin-point gate is arranged in the bottom of the vulcanization cavity. According to the rapid vulcanization forming process disclosed by the invention, double compounds are heated in one process through an injection die, injection vulcanization process is carried out in two times, and because the compound in the vulcanization cavity is in a positive vulcanization phase, the physical performances of the compound are far higher than those of the compound in a pre-vulcanization phase in the pre-vulcanization cavity. Therefore, the added compound can be prevented from being mixed with the compound in the vulcanization cavity, and quality of the rubber parts cannot be influenced. The cycle is continuously repeated, and a vulcanization time for the rubber parts can be reduced by half, thus the production efficiency is greatly improved.

Description

Technical field [0001] The invention relates to the field of rubber vulcanization, in particular to a rapid vulcanization molding process and mold for rubber parts. Background technique [0002] The process in which rubber macromolecules react with the crosslinking agent sulfur under heating to form a three-dimensional network structure. The vulcanized rubber is called vulcanized rubber. Vulcanization is the last step in rubber processing, which can obtain rubber molded products with practical value. [0003] Rubber vulcanization is a complex chemical reaction process. The vulcanization process can be divided into four stages: vulcanization induction, pre-vulcanization, normal vulcanization and over-vulcanization (for natural rubber, reversion to the original). [0004] During the vulcanization induction period (scorch time), cross-linking has not yet started, and the rubber compound has good fluidity. This stage determines the scorch and processing safety of the rubber compound. ...

Claims

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Application Information

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IPC IPC(8): B29C45/02B29C45/32B29C35/02
CPCB29C35/02B29C45/02B29C45/32
Inventor 赵茂俞
Owner HEFEI UNIV
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