TIRE PREHEATING APPARATUS, TIRE VULCANIZATION SYSTEM, TIRE PREHEATING METHOD, AND TIRE MANUFACTURING METHOD

摘要

A tire preheating apparatus (50) of the present invention, includes an external preheating portion (51) which surrounds the outside of a green tire (40X) having an easy vulcanization region (A2) and a difficult vulcanization region (A1), and heats the green tire (40X) to a normal temperature or more from an outer surface side of the green tire (40X) at a temperature less than the temperature at which a vulcanization reaction is promoted in the green tire, and an internal preheating portion (54) which is disposed inside the green tire (40X), and heats the green tire (40X) to a normal temperature or more from an inner surface side of the green tire (40X) at a temperature less than the temperature at which a vulcanization reaction is promoted in the green tire (40X), in which the external preheating portion (51) includes a first tire heater (52) which heats an outer surface of the easy vulcanization region (A2), and a second tire heater (53) which heats an outer surface of the difficult vulcanization region (A1) at a higher heating value than that of the first tire heater (52).