Sprue apparatus

Details Sprue apparatus Sprue apparatus

B - Operations, Transporting

29

C

B29C 45/27 (2006.01) B22D 17/20 (2006.01)

Patent

CA 2514715

A sprue apparatus for use in a molding apparatus for connecting the melt duct of a molding machine nozzle with a runner system of a molding apparatus. The sprue apparatus includes a plurality of thermal regulators that regulate a plurality of thermal zones that segment the length of the sprue apparatus for the purpose of localized temperature control in support of a molding process. The plurality of thermal zones may be thermally regulated such as to enable a substantially leak-free junction between the machine nozzle and the molding apparatus. The sprue apparatus may include an isolating coupler that substantially isolates a heated sprue bushing from carriage force. The invention has been found particularly useful when injecting metal alloys such as magnesium based alloys when in the thixotropic state.

L'invention concerne un appareil de carotte (51) utilisé dans un appareil de moulage pour relier un conduit de fusion (89) de buse (48) de machine de moulage à un système de canal d'appareil de moulage (26). Ledit appareil de carotte comprend une pluralité de thermorégulateurs qui régulent une pluralité de zones thermiques segmentant la longueur de l'appareil de carotte (51) afin de réguler la température locale dans un support de processus de moulage. La pluralité de zones peut être thermorégulée afin d'établir une jonction sensiblement sans fuite entre la buse de machine et l'appareil de moulage. L'appareil de carotte comprend également un coupleur d'isolation (53) qui isole sensiblement une buse de moule chauffée d'une force de transport. Cette invention est particulièrement utilisée pour injecter des alliages de métaux, tels des alliages à base de magnésium, à l'état thixotropique.

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