| 摘要 |
The purpose is to provide a convenient-to-use tire holding unit which allows vulcanization molding to be efficiently carried out, and prevents a green tire from being deformed, molding dies having the same, and a tire vulcanization method using the same. Molding dies 12 have a tire holding unit 14 for holding a green tire 30; a lower die main body 28; and an upper die main body 22. The tire holding unit 14 includes a center post 16 which is freely mountable to and dismountable from the molding dies 12; a bladder 18 mounted to the center post 16; and a central upper die part 24 and a central lower die part 26 mounted to the center post 16 at either end side of the bladder, respectively. The central upper die part 24 is freely mountable to and dismountable from the center post 16. In addition, the die-radial outside edge 26 E of the central lower die part 26 is located at an outer side in a die radial direction of a location which corresponds to half the tire section height H of the molding dies 12. The upper die main body 22 and the central upper die part 24 constitute an upper die 21, and the lower die main body 28 and the central lower die part 26 constitute a lower die 29.
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