Pirelli Tyre S.p.a.

Prometeon Tyre Group S.r.l.

Bruno Lodi

Davide Lupo Conti

Gian Luigi Bosio

A green tyre () for bicycles is built, comprising at least one carcass ply () having axially opposite end flaps () engaged with respective bead cores () and a tread band () applied in a radially outer position around said at least one carcass ply (). The built tyre () removed from the building drum, is profiled so as to translate the tread band () in a radially outer direction with respect to the bead cores (), so as to impart a cross-sectional convex profile to the tyre () in a radially outer direction. The profiled tire is engaged by means of a transfer member () comprising a gripping device () which holds it hanging and loads it into a vulcanisation mould () by axially positioning an axial centreline plane (M) of the green tyre at an axial reference () arranged at a predetermined height along a reference axis (K) of a central body () of the vulcanisation mould ().

Apparatus for moulding and vulcanising a green tyre for bicycle

A green tyre () for bicycles is built, comprising at least one carcass ply () having axially opposite end flaps () engaged with respective bead cores () and a tread band () applied in a radially outer position around said at least one carcass ply (). The built tyre () removed from the building drum, is profiled so as to translate the tread band () in a radially outer direction with respect to the bead cores (), so as to impart a cross-sectional convex profile to the tyre () in a radially outer direction. The profiled tyre is engaged by means of a transfer member () comprising a gripping device () which retains it at the radially outer surface () so as to maintain said cross-sectional convex profile in a radially outer direction.

Method and plant for handling a green tyre for bicycle

A green tyre () for bicycles is built, comprising at least one carcass ply () having axially opposite end flaps () engaged with respective bead cores () and a tread band () applied in a radially outer position around said at least one carcass ply (). The green tyre () removed from the building drum, is profiled so as to translate the tread band () in a radially outer direction with respect to the bead cores (), so as to impart a cross-sectional convex profile to the tyre () in a radially outer direction. The profiled tyre is engaged by means of a transfer member () while the tyre itself is mechanically restrained so as to maintain at least partly said cross-sectional convex profile in the radially outer direction.

Process and apparatus for handling green tyres for bicycles

A green tyre () for bicycles is built, comprising at least one carcass ply () having axially opposite end flaps (a) engaged with respective bead cores () and a tread band () applied in a radially outer position around the at least one carcass ply (). The built tyre () removed from the building drum, is profiled so as to translate the tread band () in a radially outer direction with respect to the bead cores (), so as to impart a cross-sectional convex profile to the tyre () in a radially outer direction. The profiled tyre is engaged by means of a transfer member () comprising a gripping device () which retains it at the radially outer surface (b) so as to maintain the cross-sectional convex profile in a radially outer direction.

A vulcanised bicycle tyre () is retained by exerting a thrust action on the radially inner surface of the tyre directed radially away from the geometric axis of rotation thereof (X). An unloading device () provided with at least one frame () and at least one support member () of the tyre () is positioned with respect to the tyre () by aligning it with the geometric axis of rotation (X) of the tyre. The support member () is handled with respect to the frame () towards an operating position in which it is close to the radially outer surface () of the tyre (). Finally, the radial thrust action on the radially inner surface () of the tyre () is interrupted for releasing said tyre () with the radially outer surface () thereof on a contact surface () of the support member ().

Growing community of inventors

Santo Andre, Brazil

Bruno Lodi