PROCESS AND PLANT FOR PRODUCING TYRES FOR VEHICLE WHEELS

PROCESS AND PLANT FOR PRODUCING TYRES FOR VEHICLE WHEELS

A process and a plant for producing tyres for vehicle wheels are described. Building of a crown structure of the tyre includes building a crossed belt structure on a substantially cylindrical first forming drum, transferring the crossed belt structure from the first forming drum to an annular holdin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PORTINARI, Gianni Enrico, DE COL, Christian, CONTI, Davide
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
PERFORMING OPERATIONS
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:A process and a plant for producing tyres for vehicle wheels are described. Building of a crown structure of the tyre includes building a crossed belt structure on a substantially cylindrical first forming drum, transferring the crossed belt structure from the first forming drum to an annular holding member, positioning a second forming drum in a radially inner position with respect to the annular holding member, transferring the crossed belt structure from the annular holding member to the second forming drum by radially expanding the second forming drum until it is brought into contact with the crossed belt structure so as to toroidally shape the crossed belt structure, and depositing at least one zero degrees belt layer on the second forming drum in a radially outer position with respect to the toroidally-shaped crossed belt structure.