CARCASS SHAPING METHOD AND DRUM FOR MANUFACTURING A TYRE FOR VEHICLE WHEELS

A cylindrical casing sleeve (80), comprising at least one casing ply having terminal flaps turned around corresponding annular reinforcing structures (84), is formed on a building drum (4). An outer sleeve comprising a tread applied to the exterior of a belt structure is formed on an auxiliary drum...

Full description

Saved in:
Bibliographic Details
Main Authors RUNGO, ROBERTO, BOSIO, GIANLUIGI
Format Patent
LanguageEnglish
French
Published 20.02.2003
Edition7
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:A cylindrical casing sleeve (80), comprising at least one casing ply having terminal flaps turned around corresponding annular reinforcing structures (84), is formed on a building drum (4). An outer sleeve comprising a tread applied to the exterior of a belt structure is formed on an auxiliary drum (8). The casing sleeve (80) and the outer sleeve are transferred in succession to a shaping drum (2) on which two sidewalls (81) have previously been positioned. The sidewalls (81) are held by their inner edges next to the annullar reinforcing structures (84) used to hold the casing sleeve (80) on to the shaping drum (2). The casing sleeve (80) is shaped into a toroidal shape in order to join it to the outer sleeve. The sidewalls (81) are then turned over and applied to the lateral surfaces of the casing sleeve (80). La présente invention concerne un procédé dans lequel on forme un manchon d'enveloppe de forme cylindrique (80), comportant au moins une nappe carcasse présentant des bandes jantes d'extrémité enroulées autour de structures de renfort annulaires correspondants (84), sur un tambour de fabrication (4). On forme un manchon externe comportant une bande appliquée à l'extérieur d'une structure de courroie sur un tambour auxiliaire (8). On effectue le transfert du manchon d'enveloppe (80) et le manchon externe successivement vers un tambour de formage (2) sur lequel deux flancs (81) ont déjà été positionnés. On maintient les flancs (81) par leur bords internes adjacents aux structures de renfort annulaires (84) utilisées pour maintenir en place le manchon d'enveloppe (80) sur le tambour de formage (2). On forme le manchon d'enveloppe (80) en une forme torique afin de l'assembler au manchon externe. On retourne ensuite les flancs (81) et on les applique aux surfaces latérales du manchon d'enveloppe (80).
Bibliography:Application Number: WO2002EP08186