METHOD FOR CONTROLLING TYRE VULCANIZATION

PURPOSE:To enable the most suitable vulcanization time to be determined accurately and exactry without damaging the tyre by using specified elements predicting the temperature distribution in a tyre at every minute time of vulcanization at the vulcanization process of the tyre in the guage direction of the tyre. CONSTITUTION:The step S1 where the temperature distribution in a tyre at every minute time of vulcanization in tyre vulcanization process is predicted in the gauge direction of the tyre, is regarded as the tyre shape of the part to be predicated in vulcanization. Boundry membrane layers are set at a mold, a tyre and outside the ejection of inner pressure medium, and each gauge corresponding to the tyre and the boundry layer is inputted, and then the temperature of the tyre before vulcanization is inputted. Next, the boundry temperature between the mold and the membrane layer and the temperature outside the ejection of inner pressure medium are continuously detected. Then, the heat diffusion constant of each member of the part to be predicted, and the average heat diffusion constant corresponding to shape of the gauge and the tyre pattern are calculated. Next, the temperature distribution in the tyre is predicted by a finite difference method or finite element method at every lapse of minute time DELTAt.