A combined heater and heat diffuser for an injection nozzle...

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/27 (2006.01) B29C 45/17 (2006.01) H05B 3/42 (2006.01) H05B 3/44 (2006.01)

Patent

CA 2514221

A combined heater and heat diffuser for fitting to an injection nozzle (10) for moulding plastics materials, where the nozzle comprises a tubular metal core (12) with an injection duct (14) and a cylindrical lateral surface (13). The heater and heat diffuser includes a resistor (40) housed in a channel- shaped seat (32) formed in a cylindrical internal surface (30d) of a heat diffuser (30) made of a metal material of a tubular shape for fitting around the core (12) of the nozzle.

L'invention concerne un élément chauffant et un diffuseur de chaleur combinés destinés à être disposés dans une buse d'injection (10) destinée au moulage de matériaux en plastique. La buse comprend une partie centrale (12) métallique tubulaire pourvue d'une conduite d'injection (14) et d'une surface latérale cylindrique (13). La combinaison de l'élément chauffant et du diffuseur de chaleur comprend une résistance (40) logée dans une partie siège (32) en forme de canal formée dans une surface intérieure cylindrique (30d) du diffuseur de chaleur (30), ce dernier étant constitué d'un matériau métallique de forme tubulaire, et étant destiné à être disposé autour de la partie centrale (12) de ladite buse.

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