Cavity cooling system

Details Cavity cooling system Cavity cooling system

B - Operations, Transporting

29

C

18/708

B29C 45/73 (2006.01) B29C 45/27 (2006.01)

Patent

CA 1234264

ABSTRACT OF THE DISCLOSURE A cavity member (26) is disclosed for use in an injection molding machine. The cavity member (26) has one portion which includes a molding surface (46) for forming the molded article (48) and a second portion (56) for reducing heat transmission to the first portion. The second portion (56) forms a cap on the nozzle end of the cavity member (26) and includes an aperture aligned with the gate (54) of the cavity member so as to permit plastic (24) from the nozzle (12) of an injection molding machine to enter into the mold (47). The cap (56) includes channels (62-68) which can cooperate with pockets (76, 78) in the nozzle end of the second portion (56) for liquid cooling. The nozzle (12) is spaced from the cap (56) by a short distance (15, 115) to provide a thermal break which break can be filled with plastic (24) from the injection molding unit to provide further insulation.

483320

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