Tyre manufacturing process and building drum to be used for carrying out the process.

摘要

The lifting device (20) at one end of the mounting surface (3), comprises fingers (22) distributed around the central shaft (2). These extend radially, with one surface resting against a tire component. The fingers can be extended further out from the drum (1), moved radially by actuators (23). An Independent claim is included for the method of tire manufacture. Carcass reinforcement is placed on the cylindrical mounting surface. A rubbery mixture profile is placed near one edge of the carcass reinforcement. This edge is turned around the profile and back onto itself. A (wire bead-reinforcing) rod is placed over the returned section. Preferably, the fingers participate in the action of turning back the end of the profile.