| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire vulcanizing machine and method for enabling the lowering of a carcass lift ratio while preventing the biting of rubber at the time of mold closing. SOLUTION: The tire molding machine is equipped with a plurality of segments 2 having a sector mold 1 mounted thereon, plates 4, 6 having molds 3, 5 mounted thereon and a bladder 13. The molding machine is constituted so that the segments 2 are separated from the upper mold plate 6 to be mounted on the lower mold plate 4. The segments 2 are constituted so as to freely expand and contract in a tire diametric direction and a type P equipped with mutually parallel dividing surfaces as the segments 2 and a type R equipped with dividing surfaces matched with the type P are alternately arranged. In this tire vulcanizing machine, a green tire T is inserted in the molds and the segments 2 of the type R are closed up t a predetermined position and, subsequently, the segments 2 of the type P are closed while slid to the segments 2 of the adjacent type R and the green tire T is vulcanized while pressed from its inner surface side by the bladder 13.
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