| 摘要 |
<p>A process and an apparatus for building a pneumatic tyre for vehicle wheels, in which the tyre (1) comprises a carcass structure including at least one carcass ply (2, 2'), at least one annular reinforcing structure (10) associated with said carcass structure, a tread band at a position radially external to the carcass structure, and a pair of sidewalls at axially opposite positions on the carcass structure. The apparatus has a toroidal support (13) and at least one turning-up device (100) provided with an annularly continuous presser element (3) axially translatable along the axis X-X1 of the toroidal support (13) and radially expandable and contractible relative to the axis of the toroidal support (13) to contact the axially internal surfaces of the strip- like elements (15) and turn them up around at least one reinforcing element.</p> |
