Prime mover for hot chamber die casting machines

Details Prime mover for hot chamber die casting machines Prime mover for hot chamber die casting machines

1982-01-07

1985-03-19

Lin, Kuang Y.

Metal founding

With safety control means

Apparatus safety means

B22D 1704

Patent

active

045053170

ABSTRACT:
A prime mover for hot chamber die casting machines and the like, comprises a cylindrical housing with a piston slidably mounted therein for translation between extended and retracted positions. A rod connects the piston with an injection plunger portion of the casting machine. A closed reservoir, retaining high pressure gas therein, communicates with the power side of the piston, and urges the same toward the extended position. The piston is translated to the retracted position, and selectively released, whereby the high pressure gas contained in the reservoir quickly accelerates the piston to a fast speed portion of the shot stroke, and also facilitates substantially instantaneous deceleration of the piston at the end of the shot stroke without substantial backlash.

REFERENCES:
patent: 3248879 (1966-05-01), Natho
patent: 4174656 (1979-11-01), Duffey
patent: 4245690 (1981-01-01), Walchli

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