Pneumatic press for the selection of silicon carbide

B - Operations – Transporting – 30 – B

Patent

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Details

B30B 9/00 (2006.01) B02C 1/00 (2006.01) B07B 1/00 (2006.01)

Patent

CA 2238145

This pneumatic press is provided for the selection of silicon carbide in laminar or radial layers of different qualities, and is based on a horizontal and intermittently movable structure combined with the vertical movement of a pressure wear plate which rests on and presses against the silicon carbide parts or chunks arranged over a fixed screen in a manner that said intermittent movements and vertical pressure grind the chunks over the screen to select, according to layers, the silicon carbide contained in the compound or product forming the chunks. The driving means are pneumatic, the vertical pressure of the plate being exerted through twin shaft pressure jacks which enable tilting of the plate and provide for perfect adaptation of the chunks over the screen.

La présente invention vise une presse pneumatique servant à entamer le carbure de silicium en couches laminaires ou radiales de différentes qualités. La presse est réalisée avec une structure horizontale à déplacement intermittent se combinant au mouvement vertical d'une plaque d'usure à pression qui repose sur les pièces ou les mandrins en carbure de silicium et les comprime autour d'un tamis fixe de manière que les mouvements intermittents de la structure et la pression verticale exercée par la plaque d'usure meulent les mandrins au-dessus du tamis pour extraire, selon les couches, le carbure de silicium que contient le substrat ou le produit avec lequel ces mandrins ont été fabriqués. Les mécanismes d'entraînement sont pneumatiques, la pression verticale exercée par la plaque étant transmise par des vérins pneumatiques à double tige qui autorisent l'inclinaison de cette plaque et permettent ainsi un ajustement parfait des mandrins sur le tamis.

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