TIRE BUILDING MACHINE STITCHING

摘要

1512336 Tyre building method, and a stitching roller for use therein GOODYEAR TIRE & RUBBER CO 1 Sept 1976 [14 Oct 1975] 36133/76 Heading B7C A breaker and tread stitching roller 10 comprises an inflatable sleeve secured at its ends to hubs 52 rotatably mounted in a shaft 30 non-rotatably mounted in a yoke 36. The yoke is movable towards and away from a tire building drum (not shown) by supplying air to the appropriate end of cylinder 44. Guides 38 carry adjustable stops 37. In use, a belt ply or plies and tread stock T applied to a toroidal radial carcass ply C are nipped between the roller and the carcass. The air pressure within the sleeve is preferably equal to or less than that within the carcass. End belts 20 (only one being shown) support the belt and tread and expose a zone CZ of the carcass to which the belt is applied.