Manufacturing device and molding method for rotary-component reinforcement carbon fiber reinforced plastic

A molding method for a rotary-component reinforcement carbon fiber reinforced plastic, the method molding a ring comprising a carbon fiber reinforced plastic for reinforcement of a rotary component having a circular cross section as an outermost layer of the rotary component, characterized in that, in a process in which a unidirectional prepreg, comprising a thermosetting resin and carbon fibers, is heated and cured in a mold after being wound on the rotary component, an annular pressure source utilizing its own thermal expansion is interposed between a cavity of the mold and the unidirectional prepreg, and an external pressure is applied to the unidirectional prepreg by the annular pressure source;

• wherein the cavity of the mold is formed as a through hole, the rotary component, the unidirectional prepreg and the annular pressure source are assembled in a predetermined positional relationship to form a pre-assembly, and after the pre-assembly is inserted into the through hole from one side and the ring is molded, an assembly in which the ring is molded is demolded from the other side of the through hole opposite the one side;
• and
• wherein when demolding the assembly in which the ring is molded, the annular pressure source is thermally shrunk to be demolded by locally cooling the assembly in which the ring is molded while keeping a temperature of the mold constant.