Tire manufacturing apparatus
AssigneeSumitomo Rubber Industries, Ltd.
InventorShuji KAGIMOTO
Life of this patent
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Abstract
An apparatus for manufacturing a pneumatic tire, comprises: a cylindrical former for forming a tire base from rubber members, a carcass and bead cores; and bead lock devices arranged at both ends of the former in its axial direction. Each bead lock device is expandable and contractable in diameter, and comprises a holding portion for supporting the bead core from the inside in the radial direction when expanded. The holding portion comprises an axially inner flange, an axially outer flange, and a bottom surface connecting therebetween. The height of the axially inner flange is greater than the height of the outer flange by 5 mm or more.
Claims16
A tire manufacturing apparatus for manufacturing a pneumatic tire, comprising:
- a cylindrical former for forming a tire base from rubber members, a carcass and a pair of bead cores;
- and
- a pair of bead lock devices arranged at both ends of the former in its axial direction,
- wherein
- each of the bead lock devices is expandable and contractable, and has a holding portion for supporting the bead core from the inside in the radial direction when expanded, wherein
- the holding portion comprises a radially-supporting surface for the bead core, an axially inner flange located axially inside the radially-supporting surface, an axially outer flange located axially outside the radially-supporting surface, and a bottom connecting between the inner flange and the outer flange, and
- a radial height of the axially inner flange from the bottom is greater than a radial height of the axially outer flange from the bottom, and the difference therebetween is 5 mm or more.
Dependencies are inferred from the claim text.