METHOD AND APPARATUS FOR MANUFACTURING PNEUMATIC TYRES

摘要

A green pneumatic tyre (2) is built on a rigid toroidal support (10) externally having a forming surface (10a) of a conformation corresponding to the inner shape of the tyre (2). The green tyre (2) engaged on the expandable toroidal support (10) is introduced into a vulcanisation mould (29) and submitted to a vulcanisation cycle. During vulcanisation, axial moving apart of side portions (19) of the toroidal support (10) is caused so as to press the beads (5) and sidewalls (8) of the tyre (2) against the vulcanisation mould (29).