Piston ring assembly for an injection unit

Details Piston ring assembly for an injection unit Piston ring assembly for an injection unit

B - Operations, Transporting

29

C

B29C 45/53 (2006.01) B29C 45/58 (2006.01)

Patent

CA 2607433

A piston assembly for injection unit of a molding machine is provided. The piston assembly includes a piston housing defining a piston chamber that has apertures at opposing ends. An injection piston is slidably located at least partially within the piston chamber and extends through both the apertures. The injection piston is movable between a retracted position and an extended position by selective pressurization of the piston chamber. Support structures for the injection piston are located within the piston housing proximate the first aperture and the second aperture, the support structures operable to maintain pressure in the piston chamber.

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