Nozzle for injection molds and nozzle assembly

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/20 (2006.01) B29C 45/27 (2006.01) B29C 45/74 (2006.01)

Patent

CA 2398500

The invention relates to a nozzle (10) for an injection moulding tool, comprising a nozzle body (12), which may be mounted on a tool or distributor and in which at least one flow channel (22) for a material melt is arranged, which discharges at the end of, or in a nozzle tip (26). The nozzle body (12) comprises at least one essentially flat side surface (14, 15), which carries or accepts, in a plane contact and/or arrangement, a heating and/or cooling device (28, 28'), for the material melt, in order to be able to arrange the moulding cavities extremely closely in two independent spatial directions. In a particular embodiment, the nozzles (10) are arranged parallel and tightly packed together in a nozzle row (R), whereby two side surfaces (S), of the nozzle row (R), which face each other, are provided with heating or cooling devices (28, 28'), which may be collectively connected, by means of a common external connector (34), to a heating or cooling circuit.

L'invention concerne une buse (10) destinée à un outil de moulage par injection, comprenant un corps de buse (12) pouvant être monté sur un outil ou sur une torpille, ce corps de buse comportant au moins un canal d'écoulement (22) conçu pour une fonte de matériau et aboutissant côté terminal ou dans une pointe de buse (26). Pour pouvoir réaliser des écarts de cavités très réduits dans deux directions spatiales indépendantes, le corps de buse (12) présente au moins une surface latérale (14, 15) essentiellement plane, portant ou recevant en liaison et/ou en montage surfacique un dispositif de chauffage et/ou de refroidissement (28, 28') conçu pour la fonte de matériau. Dans un mode de réalisation particulier, les buses (10) sont disposées parallèlement, étroitement l'une à côté de l'autre dans une rangée de buses (R), deux surfaces latérales (S) opposées de la rangée de buses (R) étant pourvues de dispositifs de chauffage et/ou de refroidissement (28, 28') pouvant être raccordés par groupe à un circuit de chauffage ou de refroidissement au moyen d'un raccordement extérieur commun (34).

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