LEAK DETECTION METHOD WITH TIME DELAY FOR DETECTING A LEAK THAT AFFECTS A TYRE CURING MEMBRANE OR THE INFLATION CIRCUIT THEREOF

• Main Authors: MOREY, Julien, BINDA, Yann, CHAMBONNIERE, Benoit, BAUBIAT, Sébastien
• Format: Patent
• Language: English; French
• Published: 27.06.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; MEASURING; PERFORMING OPERATIONS; PHYSICS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a method for detecting a leak in a curing membrane within a facility (1) for curing tyres (2) in a mould (3), the method comprising, after opening the mould (3), a test step (S200) which comprises a sub-step (S201) of partial re-inflation during which the curing membrane (10) is reinflated and, when the internal pressure prevailing in the curing membrane reaches a predetermined threshold, referred to as the "test pressure" (P test), the curing membrane (10) is isolated and a predetermined time delay (d_202) is allowed to elapse, at the end of which the value of the internal pressure, referred to as the "reference pressure" (P_ref), is measured, followed by a sub-step (S203) of observation during which changes to the internal pressure relative to the reference pressure (P_ref) are observed in order to identify a leak situation. L'invention concerne un procédé de détection d'une fuite d'une membrane de cuisson au sein d'une installation (1) permettant de cuire des bandages (2) dans un moule (3), ledit procédé comprenant, après ouverture du moule (3), une étape (S200) de test qui comprend une sous-étape (S201) de regonflage partiel au cours de laquelle on provoque un regonflage de la membrane de cuisson (10), et, lorsque la pression interne régnant dans la membrane de cuisson atteint un seuil prédéterminé, dit « pression de test » (P test), on isole la membrane de cuisson (10) et on laisse s'écouler une période de temporisation (d_202) prédéterminée, au terme de laquelle on mesure la valeur dite « pression de référence » (P_ref) de la pression interne, puis une sous-étape (S203) d'observation au cours de laquelle on observe l'évolution de la pression interne par rapport à la pression de référence (P_ref) afin d'identifier une situation de fuite.