DEVICE AND METHOD FOR DEPOSITING PARTICLES ON THE TREAD OF A TYRE

• Main Authors: LUTZ, MATTHIEU, BOR, GÉRARD, PIALOT, FRÉDÉRIC
• Format: Patent
• Language: English; French
• Published: 27.11.2014
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A device (1) for depositing powder particles (2) on a tread (3) before vulcanisation comprising: - means for mounting on a support (9) capable of receiving a tread (3), - means (5) for storing the particles capable of supplying by gravity - dosing means (6) capable of controlling the quantity of particles coming from the storage means (5) and cooperating with - means (7) for transferring the particles to the tread during a relative movement between the transfer means and the support, According to the invention, - the dosing means comprise a rotary dosing cylinder (60) of which the generator comprises at least one cavity in communication with the storage means (5) intended to collect the powder and move it out of the storage means when the cylinder is moved in rotation. Dispositif (1) de dépôt de particules (2) en poudre sur une bande de roulement (3) avant vulcanisation comprenant: - des moyens de montage sur un support (9) apte à recevoir une bande de roulement (3), - des moyens de stockage (5) des particules aptes à alimenter par gravité - des moyens de dosage (6) aptes à contrôler la quantité de particules en provenance des moyens de stockage (5) et à coopérer avec - des moyens de transfert (7) des particules vers la bande de roulement lors d'un déplacement relatif entre les moyens de transfert et le support, Selon l'invention, - les moyens de dosage comprennent un cylindre doseur rotatif (60) dont la génératrice comporte au moins une cavité en communication avec les moyens de stockage (5) destinée à recueillir la poudre et à l'entraîner hors desdits moyens de stockage lorsque le cylindre est mû en rotation.