Continuous extrusion of complex articles

B - Operations – Transporting – 21 – C

Patent

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Details

B21C 23/00 (2006.01) B21C 23/14 (2006.01) B21K 1/38 (2006.01)

Patent

CA 2163354

An apparatus (20) for continuously extrud- ing shaped articles includes providing a frictional extrusion source for extruding a feed material (31), a chamber (42) for holding frictionally extruded material (29) received from the extrusion source, a plurality of die chambers (10), each of the die chambers (10) receiving extruded material (29) from the holding chamber (42), means (44, 45) for directing extruded material (29) from the holding chamber (42) to each die chamber (10) for selec- tively filling each die chamber (10) with extruded feed material (29) and means for monitoring filling of each die chamber (10) of said plurality of die chambers (10) with extruded feed material (29). The directing means (44, 45) is responsive to the monitoring means so that extruded material (29) can be directed from a filled die chamber to an empty die chamber for subsequent filling, thereby permitting continuous extrusion.

L'appareil (20) d'extrusion en continu d'articles à former comporte une source d'extrusion par friction destinée à extruder la matière (31) qui lui est fournie, une chambre (42) contenant la matière extrudée par friction (29) provenant de la source d'extrusion, plusieurs chambres (10) constituées de matrices, recevant chacune la matière extrudée en provenance d'une chambre réservoir (42), un moyen (44, 45) acheminant la matière extrudée (29) de la chambre réservoir (42) vers chacune des chambres (10) constituées de matrices et permettant de charger, de façon sélective, en matière extrudée (29), les différentes chambre (10) constituées de matrices (10), des dispositifs de contrôle du remplissage en matière extrudée de chacune desdites chambres (10) constituées de matrices. Le moyen d'acheminement (44, 45) est asservi aux dispositifs de contrôle de sorte que la matière extrudée (29) peut être envoyée d'une chambre constituée de matrices, pleine, vers une autre chambre constituée de matrices, vide, ce qui permet de charger cette dernière à son tour, et garantit donc une extrusion en continu.

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