Nozzle sleeve for an injection molding apparatus

Details Nozzle sleeve for an injection molding apparatus Nozzle sleeve for an injection molding apparatus

B - Operations, Transporting

29

C

B29C 45/20 (2006.01) B29C 45/18 (2006.01) B29C 45/27 (2006.01)

Patent

CA 2666280

An injection molding apparatus (100) that includes a hot runner (104) and a mold (108). The hot runner (104) includes at least one nozzle (112) that engages a nozzle-receiving cavity (152) of the mold (108). The molding apparatus (100) further includes a nozzle sleeve (120) surrounding a portion of the nozzle (112) and having a nozzle-sealing opening (160) that receives the nozzle (112). The nozzle sleeve (120) is movably secured to the hot runner (104) or the mold (108) so that when the mold (108) is removed from the hot runner (104), the nozzle sleeve (120) remains secured to the corresponding part of the apparatus (100). When the mold (108) and hot runner (104) are engaged with one another, the nozzle sleeve (120) is springingly urged into sealing engagement with a sealing surface of the nozzle receiving cavity (152) of the mold (108).

La présente invention concerne un appareil de moulage par injection (100) qui comprend un canal chauffé (104) et un moule (108). Le canal chauffé (104) comprend au moins une buse (112) qui entre en prise avec une cavité de réception de buse (152) du moule (108). L'appareil de moulage (100) comprend en outre une chemise de buse (120) qui entoure une partie de la buse (112) et qui possède une ouverture de scellage de buse (160) qui reçoit la buse (112). La chemise de buse (120) est fixée de façon mobile au canal chauffé (104) ou au moule (108) de sorte que, lorsque le moule (108) est retiré du canal chauffé (104), la chemise de buse (120) reste fixée à la partie correspondante de l'appareil (100). Lorsque le moule (108) et le canal chauffé (104) sont en prise l'un avec l'autre, la chemise de buse (120) est poussée de façon élastique en prise de scellage avec la surface de scellage de la cavité de réception de buse (152) du moule (108).

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