Cross-head die

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 47/28 (2006.01) B29C 47/02 (2006.01)

Patent

CA 2361142

A cross-head die (20) which is comprised of a die body (25) with a flow chamber (38), a plurality of die cavities (30), die elements (48) within the die cavities (30), communication between the die cavities (30) and the flow chamber (38), a means for individual flow adjustment to each die cavity (30), and a means for axial motion of the filamentary members (14) through the die elements (48). The single flow chamber (38) communicates to a plurality of die cavities (30) through individual radial flow ports (40). The flow chamber (38) is open at one end (27) and closed (28) at the other except for a cleaning hole (23). Within each of the radial flow ports (40) resides a device for adjusting flow restriction. Within each die cavity (30) is a cylindrical die piston (32). A gap created between the die piston (32) and the die cavity (30) defines a path for resin flow. The resin flow path is tapered to a point at which the filamentary member (14) exits from a smaller cylindrical hole (34) through the center of the die piston (32). The resin is deposited on the filamentary member (14) as it moves through the die piston (32) to produce a composite matrix strand.

L'invention porte sur une filière en crosse (20) comprenant un corps (25) abritant une chambre d'écoulement (38) et plusieurs cavités (30), des éléments (48) placés dans les cavités (30), des passages reliant les cavités (30) à la chambre d'écoulement (38), un moyen de réglage du flux traversant chaque cavité (30), et un moyen de déplacement axial des matières (14) filamentaires dans les éléments (48). L'unique chambre d'écoulement (38) communique avec les cavités par des ports radiaux individuels (40). La chambre d'écoulement (38) est ouverte à une extrémité (27) et fermée (28) à l'autre à l'exception d'un trou (23) de nettoyage. Chacun des ports (40) possède son propre dispositif de réglage du flux, et chacune des cavités (30) comporte son piston (32) d'extrusion. L'espace entre le piston (32) et la cavité (30) constitue un passage pour le flux de résine. Ledit passage est effilé jusqu'à un point où les matières filamentaires (14) sortent d'un plus petit trou cylindrique (34) percé dans le centre du piston (32). La résine se dépose sur les matières filamentaires (14) en traversant le piston (32) de manière à produire un câble à matrice composite.

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