Tire vulcanizer and method of operating the same.

摘要

In a tire vulcanizer (1) according to the present invention configured to perform opening and closing of a mold (10) by an elevating means using an efficient ball screw shaft (55a) or the like, a top mold mounting member (20) holding a top mold (11) is lifted and lowered by rotating the ball screw shaft with a driving mechanism (59) to vertically lift and lower a ball nut (55b), and the lifting and lowering of the top mold mounting member is stopped by fixing the ball screw shaft with an excitation-free electromagnetic brake (57) connected directly to the ball screw shaft independently from the driving mechanism. According to such a structure, the opening and closing of the mold can be stopped, even if abnormality of the driving mechanism or the brake occurs.