Apparatus and method for reducing vehicle tires

B - Operations – Transporting – 26 – D

Patent

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Details

B26D 3/00 (2006.01) B02C 18/14 (2006.01) B02C 18/18 (2006.01) B02C 19/18 (2006.01) B26D 1/00 (2006.01) B26D 7/10 (2006.01) B29B 17/02 (2006.01)

Patent

CA 2178326

Apparatus for reducing to particles tread portions and beaded side wall portions of vehicle tires (19), particularly extra large vehicle tires (19), or for preparing such vehicle tires (19) for recapping, comprises a tire holder assembly (10), having a paired set of dual jacks (163 carried by opposite ends, respectively, or elongate, rigid. tire clamping frames (14). and a rotary, cutter blade assembly (13) made up of chisel type offset from one another to provide a helically oriented series of such cutting blades (13). An optional but important feature of the invention is the progressive cutting of the tire (19) in a cryogenic atmosphere which freezes exposed surfaces of the tire, and the mounting of a group of separate, residual, beaded side wall portions (19-1) of sequentially cut tires (19) in the tire holder assembly (13) of the same apertures for cutting such side wall portions (19-1) down to the heavily reinforced beads (51) thereof.

L'invention concerne un appareil de réduction en particules de bandes de roulement et de flancs à talon de pneumatiques de véhicules (19), et plus particulièrement des pneumatiques de grandes dimensions (19), ou de préparation desdits pneumatiques (19) au rechapage. Ledit appareil comporte un ensemble porte-pneus (10) doté d'une paire de vérins doubles (16) supportés par des extrémités opposées, ou des châssis de fixation pneumatiques rigides ou allongés (14), ainsi qu'un ensemble à lames rotatif (13) constitué de ciseaux décalés les uns par rapport aux autres formant une série hélicoïdale de lames (13). Une caractéristique optionnelle mais importante du procédé selon l'invention consiste à découper progressivement le pneu (19) dans une atmosphère cryogénique de sorte que les surfaces exposées du pneu gèlent, et à monter un groupe de flancs à talon résiduels séparés (19-1) de pneumatiques découpés de manière séquentielle (19) dans l'ensemble porte-pneus (13) du même appareil de manière à découper lesdits flancs (19-1) au ras de leur talon (51) hautement renforcé.

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