US 12,377,625 B2
Apparatus for building a carcass structure of a tyre for vehicle wheels
Maurizio Marchini, Milan (IT); Gianni Mancini, Milan (IT); and Gaetano Lo Presti, Milan (IT)
Assigned to PIRELLI TYRE S.p.A., Milan (IT)
Filed by Pirelli Tyre S.p.A., Milan (IT)
Filed on Mar. 23, 2022, as Appl. No. 17/656,122.
Application 17/656,122 is a division of application No. 16/405,076, filed on May 7, 2019, granted, now 11,312,095.
Application 16/405,076 is a division of application No. 15/187,023, filed on Jun. 20, 2016, granted, now 10,322,553, issued on Jun. 18, 2019.
Application 15/187,023 is a division of application No. 12/743,135, granted, now 9,409,360, issued on Aug. 9, 2016, previously published as PCT/IB2007/003500, filed on Nov. 15, 2007.
Prior Publication US 2022/0212428 A1, Jul. 7, 2022
Int. Cl. B29D 30/24 (2006.01); B29D 30/32 (2006.01)
CPC B29D 30/244 (2013.01) [B29D 30/245 (2013.01); B29D 30/32 (2013.01); B29D 2030/3207 (2013.01); B29D 2030/3214 (2013.01); B29D 2030/3221 (2013.01); B29D 2030/3278 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for building a carcass structure of a tyre for a vehicle wheel on a forming support, the carcass structure comprising a carcass ply, and, at an end edge of the carcass ply, an annular anchoring structure comprising a substantially circumferential annular insert and a filling insert associated with the substantially circumferential annular insert, comprising:
a positioning member of the annular anchoring structure on the end edge of the carcass ply, wherein the positioning member is configured to bring the annular anchoring structure in contact with the end edge of the carcass ply;
a ring having a side surface with a predetermined profile, wherein the predetermined profile of the side surface of the ring is conjugated to a profile of a side surface of the filling insert when pulled down on the end edge of the carcass ply to act on the entire side surface of the filling insert annularly and radially; and
a turning-up member of a turned up end portion of the carcass ply;
wherein the ring is configured to slide with respect to the positioning member and is adapted to act on the filling insert while the positioning member retains the substantially circumferential insert in a contact position with the end edge of the carcass ply and before the turning-up member formed the turned up end portion of the carcass ply; and
wherein the ring is controlled by a hydraulic cylinder with a piston, the piston passes through the positioning member to contact the ring, and
wherein the side surface of the ring only moves along a direction parallel to a longitudinal axis of the piston.