Method setting exhausting parameters of vulcanizing machine according to vulcanization curve of rubber compound and used for producing sealing part

Abstract

The invention discloses a method setting exhausting parameters of a vulcanizing machine according to the vulcanization curve of a rubber compound and used for producing a sealing part. The method comprises the following steps that the product of 1 / ML and T10 in the vulcanization curve of corresponding temperature of the rubber compound serves as the reference base for setting the exhausting parameters, when the product is equal to 0.5, the product is supposed to be a critical value, and at the critical value, the exhausting parameters are set in the manner that exhausting is carried out twice,initial pressure stays for 2 s, the exhausting length is 2 s, and exhausting stays for 2 s; the time sum of all the exhausting parameters is smaller than T10 time; an ML value represents the lowest torque, the unit is dNm, a T10 value represents scorching time of a rubber material, and the unit is min; along with increase of the product of 1 / ML and T10, the exhausting speed is increased, and namely, exhausting time is shortened; and along with reduction of the product of the 1 / ML and T10, the exhausting speed is reduced, namely, the exhausting time is prolonged, debugging time is effectivelysaved, the problem of air choking is solved, the phenomenon of air choking occurring to products is avoided, the yield is increased, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of sealing technology, in particular to a method for setting the exhaust parameters of a vulcanizer according to the vulcanization curve of a compound rubber used in the production of a seal. Background technique [0002] At present, in the vulcanization production process of seal products such as water seals and oil seals, often due to incomplete gas discharge, a small amount of gas stagnates in the cavity, causing the rubber material to fail to fill the cavity, resulting in lack of rubber or spongy defects in the finished product, called It's the product's anger. Measures such as adding vent holes in the mold cavity and using a vacuum vulcanizer can greatly reduce the occurrence of the above defects. However, due to fluctuations in the fluidity of the rubber material, simply using a vacuum vulcanizer cannot simply solve the problem of product nesting, and often requires Exploring and debugging wastes manpower and m...

AI Technical Summary

Problems solved by technology

Measures such as adding vent holes in the mold cavity and using a vacuum vulcanizer can greatly reduce the occurrence of the above defects. However, due to fluctuations in the fluidity of the rubber material, simply using a vacuum vulcanizer cannot simply solve the problem of product nesting, and often requires Exploring and debugging, wasting manpower and material resources

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