Liner for a casting shake out and reclaimer

Details Liner for a casting shake out and reclaimer Liner for a casting shake out and reclaimer

B - Operations, Transporting

22

D

B22D 29/00 (2006.01)

Patent

CA 2658816

A tumbling unit such as a casting shake-out unit, rotary media drum, sand reclaimer or the like includes a cylindrical outer shell (3) and a cylindrical inner liner (5). The inner liner (5) is formed of a series of interfitting segments (9). The segments (9) each have an inner surface, an outer surface, side edges (17), a front edge and a back edge (19), and two vanes (21) extending from the outer surface. The side edges (17) of the segments (9) have a groove (25) and the grooves (25) of neighboring segments (9) define a channel between the segments (9). A pin (27) in the channel urges the neighboring segments (9) apart to form a tight interfit among the segments (9) in a row of the liner (5). The pin (27) conforms in shape and size to the cross section of the vanes (21), and align with the vanes (21) of the adjacent segments (9) to form a continuous spiral upon the outside of the liner (5).

L'invention porte sur une unité tambour telle qu'une unité de démoulage de pièce coulée, un tambour rotatif, un récupérateur de sable ou analogue, qui comprend une enveloppe cylindrique externe et une chemise cylindrique interne. La chemise interne est formée d'une série de segments qui s'ajustent les uns aux autres. Les segments possèdent chacun une surface interne, une surface externe, des bords latéraux, un bord antérieur, un bord postérieur, et deux ailettes s'étendant depuis la surface externe. Les bords latéraux des segments comportent une rainure, les rainures de segments adjacents définissant un canal entre les segments. Une broche dans le canal écarte les segments adjacents afin de former un agencement à ajustement serré entre les segments d'une rangée de la chemise interne. La broche possède une forme et un taille adaptées à la section transversale des ailettes, et s'aligne sur les ailettes de segments adjacents afin de former une spirale continue à l'extérieur de la chemise interne.

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