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 2205575

An apparatus (20) for continuously extruding shaped articles includes a frictional extrusion source for extruding a feed material (31), a chamber for holding (42, 43) frictionally extruded material received from the extrusion source, a plurality of die chambers (10, 10a), each of the die chambers (10, 10a) receiving extruded material from the holding chamber (42, 43), a conduit (44, 45) for directing extruded material from the holding chamber (42, 43) to each die chamber (10, 10a) for selectively filling each die chamber (10, 10a) with extruded feed material and a monitor (53) for filling of each die chamber (10, 10a) of said plurality of die chambers with extruded feed material. The conduit (44, 45) is responsive to the monitor (53) so that extruded material can be directed from a filled die chamber (10, 10a) to an empty die chamber (10, 10a) for subsequent filling, thereby permitting continuous extrusion.

La présente invention concerne un appareil (20) permettant l'extrusion en continu d'articles façonnés. Cet appareil est constitué d'une source d'extrusion par friction permettant l'extrusion d'une matière d'alimentation (31), d'une chambre (42, 43) destinée à contenir la matière extrudée par friction provenant de la source d'extrusion, d'une pluralité de chambres de moulage (10, 10a), chaque chambre de moulage (10, 10a) recevant la matière extrudée de la chambre de contenance (42, 43) d'un conduit (44, 45) dirigeant la matière extrudée de la chambre de contenance (42, 43) vers chacune des chambres de moulage (10, 10a) afin de remplir sélectivement de matière extrudée chaque chambre de moulage, et d'un dispositif de contrôle (53) servant au remplissage de matière d'alimentation extrudée dans chaque chambre de ladite pluralité de chambres de moulage (10, 10a). Le conduit (44, 45) réagit au dispositif de contrôle (53) de façon à diriger la matière extrudée d'une chambre de moulage (10, 10a) remplie vers une chambre de moulage (10, 10a) vide destinée à être ensuite remplie, ce qui permet l'extrusion en continu.

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