B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/32 (2006.01) F16L 29/04 (2006.01)
Patent
CA 2473921
An injection molding apparatus comprises a first sprue bar (36) element having a first sprue channel (34) for receiving a melt stream of moldable material under pressure. A second sprue bar element (38) has a second sprue channel (39) for selectively receiving the melt stream from the first sprue channel. A manifold (50) has a manifold channel for receiving the melt stream from the second sprue channel (30) and delivering the melt stream to a nozzle channel of a nozzle (44). A mold cavity (30,32) receives the melt stream from the nozzle (44). The nozzle channel communicates with the mold cavity through a mold gate (46). A first gate (180) assembly is coupled to an outlet of the first sprue bar element for selectively restricting the flow of the melt stream from the first sprue channel. The first gate assembly is movable to restrict the flow when the flow of the melt stream between the first sprue channel and the second sprue channel is interrupted.
L'invention concerne un appareil de moulage par injection, qui comprend un premier ~l~ment de tige de coul~e (36) comportant un premier canal de coul~e (34) pour recevoir un flux de matire fondue d'un mat~riau moulable sous pression. Un second ~l~ment de tige de coul~e (38) comporte un second canal de coul~e (39) pour recevoir s~lectivement le flux de matire fondue du premier canal de coul~e. Un collecteur (50) pr~sente un canal de collecteur pour recevoir le flux de matire fondue du second canal de coul~e (30) et le transf~rer ~ un canal d'une buse (44). Une cavit~ de moulage (30,32) re×oit le flux de matire fondue de la buse (44). Le canal de la buse communique avec la cavit~ de moulage par une entr~e de moulage (46). Un premier ensemble d'entr~e (180) est coupl~ ~ un orifice de sortie du premier ~l~ment de tige de coul~e pour limiter s~lectivement l'~coulement de la matire fondue provenant du premier canal de coul~e. Le premier ensemble d'entr~e peut Útre d~plac~ pour limiter l'~coulement lorsque l'~coulement de la matire fondue entre le premier canal de coul~e et le second canal de coul~e est interrompu.
Mold-Masters (2007) Limited
Mold-Masters Limited
Ridout & Maybee Llp
LandOfFree
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