Patent ID: 7625511

Claim:
A method for manufacturing a tire's annular member by use of a first mold that includes a profile mold having a molding face defining an annular recess that corresponds to a shape of the tire's annular member and of a second mold capable of facing and coming into contact with the first mold to close an opening of the profile mold, and further using an extruder for delivering vulcanizable rubber mass to the annular recess of the profile mold, the steps of the method comprising: supporting the first mold ( 10 ) on a base ( 50 ) movable toward and away from the second mold ( 20 ), supporting the second mold ( 20 ) and extruder ( 30 ) on a second base ( 60 ) movable in a direction perpendicular to the direction of movement of the first base ( 50 ) by movement of the second base ( 60 ), simultaneously moving the second mold ( 20 ) from the position at which the second mold ( 20 ) faces the first mold ( 10 ) to a standby position, and moving the extruder ( 30 ) from a standby position to the position at which the extruder ( 30 ) faces the first mold ( 10 ), in a state where the extruder ( 30 ) faces the first mold ( 10 ), continuously extruding and supplying a to-be vulcanized rubber body into a recess of the profile mold using an extruder, and rotating the profile mold simultaneously with the extruding, so as to make the rubber body annularly continuous in the recess; and, subsequently, moving the second base ( 60 ), simultaneously moving the extruder ( 30 ) from the position where the extruder ( 30 ) faces the first mold ( 20 ) to the standby position, and moving the second mold ( 20 ) from the standby position to the position at which the second mold ( 20 ) faces the first mold ( 10 ), and thereafter, moving the first base ( 50 ), thereby moving the first mold ( 10 ) toward the second mold ( 20 ), whereby making the first mold and the second mold face each other and then contact with each other so as to press the rubber body by the profile mold and the second mold, and thus shaping the rubber body into a predetermined shape defined by the profile mold ( 11 ), and thereafter separating the second mold ( 20 ) from the first mold ( 10 ) and retrieving a molded annular member ( 1 ).