Injection molding machine and method

Details Injection molding machine and method Injection molding machine and method

B - Operations, Transporting

29

C

18/703

B29C 45/30 (2006.01) B29C 45/28 (2006.01)

Patent

CA 1085125

INJECTION MOLDING MACHINE AND METHOD ABSTRACT OF THE DISCLOSURE A machine and method for injecting structural foam or other thermoplastic materials into one or more mold cavities. The machine comprises at least one mold-mounted shut-off bushing having a material delivery chamber formed between an outer body and a shank, with a shut-off pin slidably mounted in the shank, a heater being disposed between the pin and shank so as to heat the material passage as well as the shut-off pin tip. Closing of the shut-off bushings is independent of material pressures and is carried out from the space between a mold half and its platen by a cylinder operated cam rod.

247562

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