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公开(公告)号：US20170355158A1
公开(公告)日：2017-12-14
申请号：US15643199
申请日：2017-07-06
申请人： PIRELLI TYRE S.p.A.
发明人： Mauro BIGOGNO , Gianni Portinari , Pietro Dale'
CPC分类号： B29D30/12 , B29D30/245 , B29D30/246 , B29D30/36 , B29D2030/3257 , B29D2030/3264
摘要： In a process for building tyres for vehicle wheels, a carcass sleeve is arranged on a shaping drum including two half-drums and two supports. Each support is operatively associated with one of the half-drums and carries a plurality of turning-up levers having free ends positioned close to the respective half-drum. Two annular anchoring structures are disposed around the carcass sleeve and each of the two supports is locked to the respective half-drum by interposing only stiff mechanical elements in mutual contact between the support and the half-drum. The carcass sleeve is shaped in a toroidal conformation, by setting a threaded shaft in rotation and moving the half-drums close to each other. Subsequently, each of the two supports is unlocked from the respective half-drum and the threaded shaft is set in rotation to move each support close to the respective half-drum and lift up the free ends of the turning-up levers until the end flaps of the carcass sleeve are turned up around the annular anchoring structures.
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公开(公告)号：US20220297398A1
公开(公告)日：2022-09-22
申请号：US17596228
申请日：2020-05-28
申请人： Pirelli Tyre S.p.A.
摘要： A mould for vulcanising tyres for vehicle wheels, comprising—at least one sidewall plate (3) on which a moulding surface (4) is defined,—a removable insert (10) arranged to be received in a seat (5) which is made in said sidewall plate and open on said moulding surface, said insert comprising a main body (11; 111) on which a base surface (12) is defined which is intended for contacting a portion of a sidewall (52) of the green tyre, and—a retaining member (20) for retaining said insert (10) inside said seat. The retaining member comprises at least one locking element which is mounted on one out of said insert and said sidewall plate and can be moved in an operating direction (Y) between a locking position, in which said insert is retained inside said seat, and a release position, in which said insert is free to leave said seat.
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公开(公告)号：US20170320223A1
公开(公告)日：2017-11-09
申请号：US15603134
申请日：2017-05-23
申请人： PIRELLI TYRE S.P.A.
发明人： Mauro BIGOGNO , Gianni PORTINARI
CPC分类号： B26D5/16 , B26D1/085 , B26D3/003 , B29D30/3028 , B29D30/46
摘要： Within tyre manufacturing, a reinforcing structure of the tyre, such as the zero-degree layer of the belt structure, is made by an apparatus having devices for guiding a continuous elongated element towards a forming drum, devices for applying the elongated element against a laying surface of the drum, and a cutting unit to cut off the continuous elongated element when application has been completed. Once the cutting operation has been carried out, the free end of the continuous elongated element is set to a grip position downstream of the cutting unit, through a reciprocating slider and a threading element blocking the continuous elongated element with respect to the slider when the latter moves towards the forming drum.
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