Compagnie Generale Des Etablissements Michelin

Florian Ferriere

Jean-Claude Aperce

Stéphane Chaland

Florent Jolain

Philippe Cealis

Luc Ouamane

Tommaso Ottaiano

Romain Viard

The tire mold comprises lowerand upper portionswhich are movable relative to one another between a close-together position for molding the tire and a distanced position for extracting said tire from the mold, and a plurality of central sectorswhich are in axial contact with the lowerand upper portionsin their close-together molding position. For each sector, the mold comprises an upper memberfor permanently coupling said sector to the upper portion, and a lower memberfor temporarily coupling said sector to the lower portion, said coupling membersbeing configured so as to obtain, during an axial distancing movement of the lowerand upper portionsfrom their close-together molding position, a radial displacement of said sectortoward the outside followed by an angular pivoting.

Mold with sectors for tires, in particular tires for agricultural vehicles, and associated molding method

A self-locking mold () includes sectors () circumferentially distributed around a shell () to resist internal pressure and remain in the closed position without the aid of additional components during curing. The mold () includes shoulder spacers () that, in the closed position of the mold, are arranged between the shell () and the sectors (). An elastic means () is employed so as to avoid friction between them.

Self-locking mold comprising a shoulder spacer for molding and vulcanization of tires

Growing community of inventors

Clermont-Ferrand, France

Florian Ferriere