Patent ID: 11951702
Assignee: PIRELLI TYRE S.P.A.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 10:
11. An apparatus for building tyres for vehicle wheels, comprising:
a shaping drum comprising two half-drums and two supports, wherein each half-drum comprises support elements engaging beads of a carcass sleeve;
and each support is operatively associated with one of the half-drums and carries a plurality of application levers with free ends facing towards the respective half-drum,
wherein the application levers of each support are movable among:
a contracted configuration, in which the application levers lie substantially parallel to a rotation axis (X) of the shaping drum,
an intermediate configuration, in which the application levers are in a partially radially open position, and
an expanded configuration, in which the application levers are radially open,

wherein the free ends of the application levers comprise a radially outer surface,
wherein each support carries a respective sidewall arranged as a ring directly against the radially outer surfaces of the application levers, making an axial appendage of the sidewall protrude axially beyond the free ends of the respective application levers; and
wherein each support is axially movable with respect to the respective half-drum for bringing the free ends of the application levers and the axial appendage in proximity to the support elements of the respective half-drum while the application levers are fixed in the intermediate configuration to engage the axial appendage with the carcass sleeve.