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1. WO2021019183 - EXPANDABLE DRUM FOR SHAPING PNEUMATIC TYRES THAT COMPRISES A PARALLELOGRAM-TYPE EXPANDER DEVICE FOR RETAINING THE BEAD WIRE

Publication Number WO/2021/019183
Publication Date 04.02.2021
International Application No. PCT/FR2020/051388
International Filing Date 28.07.2020
IPC
B29D 30/24 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
30Producing pneumatic or solid tyres or parts thereof
06Pneumatic tyres or parts thereof
08Building tyres
20by the flat-tyre method, i.e. building on cylindrical drums
24Drums
B29D 30/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
30Producing pneumatic or solid tyres or parts thereof
06Pneumatic tyres or parts thereof
08Building tyres
20by the flat-tyre method, i.e. building on cylindrical drums
32Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
CPC
B29D 2030/3214
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
30Producing pneumatic or solid tyres or parts thereof
06Pneumatic tyres or parts thereof ; (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
08Building tyres
20by the flat-tyre method, i.e. building on cylindrical drums
32Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
3214Locking the beads on the drum; details of the drum in the bead locking areas, e.g. drum shoulders
B29D 30/245
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
30Producing pneumatic or solid tyres or parts thereof
06Pneumatic tyres or parts thereof ; (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
08Building tyres
20by the flat-tyre method, i.e. building on cylindrical drums
24Drums
244for manufacturing substantially cylindrical tyre components with cores or beads, e.g. carcasses
245Drums for the single stage building process, i.e. the building-up of the cylindrical carcass and the toroidal expansion of it are realised on the same drum
B29D 30/247
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
30Producing pneumatic or solid tyres or parts thereof
06Pneumatic tyres or parts thereof ; (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
08Building tyres
20by the flat-tyre method, i.e. building on cylindrical drums
24Drums
244for manufacturing substantially cylindrical tyre components with cores or beads, e.g. carcasses
246Drums for the multiple stage building process, i.e. the building-up of the cylindrical carcass is realised on one drum and the toroidal expansion is realised after transferring on another drum
247Arrangements for the first stage only, e.g. means for radially expanding the drum to lock the beads
Applicants
  • COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN [FR]/[FR]
Inventors
  • TORRES-CASTELLANO, Miguel
Agents
  • REDOUTE, Gilles
Priority Data
FR190882301.08.2019FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) EXPANDABLE DRUM FOR SHAPING PNEUMATIC TYRES THAT COMPRISES A PARALLELOGRAM-TYPE EXPANDER DEVICE FOR RETAINING THE BEAD WIRE
(FR) TAMBOUR EXPANSIBLE POUR LA CONFORMATION DE BANDAGES PNEUMATIQUES COMPRENANT UN DISPOSITIF EXTENSEUR A PARALLÉLOGRAMME POUR LE MAINTIEN DE LA TRINGLE
Abstract
(EN)
The invention relates to a drum (1) for manufacturing a pneumatic tyre (2) that is provided with a plurality of clamping jaws (12) mounted so as to be movable between a retracted configuration and a deployed configuration that allows said clamping jaws (12) to engage with a bead wire (3) of the tyre (2), said clamping jaws (12) being placed for this purpose under the control of a deployment system (13) that comprises an articulated parallelogram (20) having a first fixed base (25) secured to a shaft (11) and a second movable base (26) secured to a clamping jaw (12), and also a drive mechanism (30) arranged to cooperate with the articulated parallelogram (20) so as to be able to select and modify the radial position (d26) of the movable base (26) with respect to the fixed base (25) in order to switch from the retracted configuration to the deployed configuration, and vice versa.
(FR)
L'invention concerne un tambour (1) de fabrication d'un bandage (2) pneumatique pourvu d'une pluralité de mors de serrage (12) montés mobiles entre une configuration rétractée et une configuration déployée qui permet auxdits mors de serrage (12) de venir en prise sur une tringle (3) du bandage (2), lesdits mors de serrage (12) étant placés à cet effet sous le contrôle d'un système de déploiement (13) qui comprend un parallélogramme articulé (20) présentant une première base (25) fixe solidaire d'un fût (11) et une seconde base (26) mobile solidaire d'un mors de serrage (12), ainsi qu'un mécanisme d'entraînement (30) agencé pour coopérer avec le parallélogramme articulé (20) de manière à pouvoir sélectionner et modifier la position radiale (d26) de la base mobile (26) par rapport à la base fixe (25) afin de passer de la configuration rétractée à la configuration déployée et inversement.
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