Tire vulcanizing apparatus and tire vulcanizing method
AssigneeSumitomo Rubber Industries, Ltd.
InventorsTakashi TANAKA, Kazuo HAYASHI
Life of this patent
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Abstract
A tire vulcanizing apparatus 1 comprises: a vulcanizing mold 2 for vulcanization-molding an unvulcanized tire T, a tire-vulcanizing bladder assembly 3 inflatable with a fluid to press the unvulcanized tire against the vulcanizing mold, a supply means 4 for the fluid, and a discharge means 5 for the fluid from the assembly 3. The tire-vulcanizing bladder assembly 3 compresses an outside bladder 8 for abutting on the inner surface of the unvulcanized tire, and an inside bladder 9 disposed in the outside bladder. The fluid includes a first fluid G1 supplied between the outside and inside bladders, and a second fluid G2 supplied to the inside bladder.
Claims20
A tire vulcanizing apparatus comprising:
- a vulcanizing mold for vulcanization-molding an unvulcanized tire;
- a tire-vulcanizing bladder assembly to be disposed in the inner cavity of the unvulcanized tire disposed in the vulcanizing mold, and being inflatable with a fluid so as to press the unvulcanized tire against the vulcanizing mold;
- a supply port configured to supply the fluid to the tire-vulcanizing bladder assembly;
- and
- a discharge port configured to discharge the fluid from the tire-vulcanizing bladder assembly,
- wherein the tire-vulcanizing bladder assembly compresses:
- an outside bladder for abutting on the inner surface of the unvulcanized tire;
- and
- an inside bladder disposed inside the outside bladder, and
- wherein the fluid includes:
- a first fluid supplied between the outside bladder and the inside bladder;
- and
- a second fluid supplied to the inside of the inside bladder.
A tire vulcanizing method, which is for vulcanization-molding an unvulcanized tire while the unvulcanized tire disposed in a vulcanizing mold is pressed against the vulcanizing mold by the use of an outside bladder abutting on the inner surface of the unvulcanized tire, and an inside bladder disposed inside the outside bladder, and which comprises:
- a first supply process of supplying a first fluid between the outside bladder and the inside bladder;
- a discharge process of discharging the first fluid between the outside bladder and the inside bladder;
- and
- a second supply process of supplying a second fluid to the inside of the inside bladder,
- wherein by the first supply process and the discharge process, during vulcanization-molding the unvulcanized tire, the first fluid continuously flows through a path formed between the outside bladder and the inside bladder.
Dependencies are inferred from the claim text.