Injection apparatus for a die casting machine

Details Injection apparatus for a die casting machine Injection apparatus for a die casting machine

1995-09-14

1997-04-22

Hail, III, Joseph J.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164312, 1641553, 1641541, 164113, B22D 1732

Patent

active

056222173

ABSTRACT:
Operation can be switched from low- or high-speed injection process to intensified-pressure injection process by using only one accumulator, and an injection cylinder is composed of a single-acting cylinder, so that the space can be saved, and intensified-pressure surge can be reduced. A coaxial small-diameter portion is formed on the pressure surface side of a piston of the accumulator, a hydraulic oil discharge passage having an inside diameter corresponding to the outside diameter of the small-diameter portion is provided coaxial with the piston, and a passage is provided for guiding intensified-pressure oil in a cylinder chamber of the accumulator.

REFERENCES:
patent: 5299626 (1994-04-01), Iwamoto

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