PURPOSE: To carry out the vulcanization without causing irregularity in a vulcanization state and enhanced the productivity or quality by estimating the energy at the time of next vulcanization so that the fluctuation tendency of energy calculated between a plurality of materials to be vulcanized enters into a specific range and controlling next vulcanization on the basis of this estimation.
CONSTITUTION: In vulcanization treatment, the update data at the time of initial vulcanization stored in an external memory device as a data base is read, for example, five times and a vulcanization state value is estimated from the read data to judge whether the vulcanization state value is within a specific tolerance range. When the estimated value is within the tolerance range, a tire is vulcanized as it is and, when the value is out of the torelance range, the energy for vulcanizing the tire 48 is determined while the vulcanization state value is held within the torelance range. That is, the energy allowing all of the values of a vulcanization time, a vulcanization degree and the max. temp. to enter the torelance range is operated to determine the energy at the time of the next vulcanization of the tire. The temp. of the heating fluid supplied to a jacket 16 and upper and lower platens 22, 24 is altered by the determined energy to be reflected to the next tire 48.
ITO MICHIO
HIRUKAWA TETSUYA
