| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing process of tires which is capable of stably manufacturing high-quality tires. SOLUTION: The manufacturing process comprises (1) a step in which a raw cover is formed, (2) a step in which an abutting surface 58 inclined to the radial direction inwardly toward the vertical direction and a hook 46 having a holding surface 60 extending from the abutting surface 58 in the radial direction outwardly are arranged facing toward the inner side of the raw cover in the radial direction and the bead portion of the raw cover is abutted against the abutting surface 58, (3) a step in which the raw cover is lifted on the hook 46 as it is elevated, and the bead portion is placed on the holding surface 60, (4) a step in which the raw cover is put into the mold, and (5) a step in which the raw cover is pressurized and heated in the mold. Preferably, the angle of inclination of the abutting surface 58 is≥30°and≤60°and the angle of inclination of the holding surface 60 is≥60°and≤90°. COPYRIGHT: (C)2009,JPO&INPIT |
