PURPOSE: To improve operation efficiency sharply by cutting a rubber pipe not vulcanized, which is molded continuously by means of an extrusion molding machine, at every predetermined length and putting each pipe in dies, to carry them successively into a vulcanizing chamber and press-vulcanizing them.

CONSTITUTION: A rubber tube not vulcanized is extruded from an extrusion molding machine, and cut by means of a fixed-size cutter. The rubber tube not vulcanized cut in prescribed length is charged into a recess 12, and encased into a cope 15 and a drag 11 (they function as the die 18). The die 18 is carried into the vulcanizing chamber 21 by means of a conveyor 20, and vulcanized. Holding frames 24 in the vulcanizing chamber 21 complete vulcanization while being turned in the counterclockwise direction, and discharge the die 18 from a carry-out port 27. The die 18 is opened, and the rubber tube vulcanized is extracted.