Diecasting machine

Details Diecasting machine Diecasting machine

2007-01-09

2007-01-09

Kerns, Kevin P. (Department: 1725)

Metal founding

Means to shape metallic material

Pressure shaping means

C164S341000

Reexamination Certificate

active

10712930

ABSTRACT:
A direct-acting type diecasting machine having an inexpensive and simplified hydraulic circuit is provided, which includes: a mold clamping cylinder for clamping and opening/closing a mold in a direct-acting manner; a single two-way hydraulic pump driven by a driving motor for supplying hydraulic fluid to the mold clamping cylinder in two directions; a hydraulic circuit for driving the mold clamping cylinder by controlling supply of hydraulic fluid from the two-way hydraulic pump to the mold clamping cylinder and discharge of hydraulic fluid from the mold clamping cylinder which proceeds in accordance with movement of a piston of the mold clamping cylinder; and a hydraulic controller for controlling rotational speed of the driving motor associated with the two-way hydraulic pump in opening/closing the mold at high speed and controlling torque of the driving motor in clamping the mold.

REFERENCES:
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patent: 4861259 (1989-08-01), Takada
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patent: 2000-033472 (2000-02-01), None
patent: 2001-047299 (2001-01-01), None

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