Method for controlling injection in a die casting machine and ap

Details Method for controlling injection in a die casting machine and ap Method for controlling injection in a die casting machine and ap

1997-03-05

1999-11-23

Pyon, Harold Y.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164113, 164312, 1641553, 1641554, 1641555, 1641541, B22D 4600, B22D 1732

Patent

active

059882603

ABSTRACT:
A method for controlling injection in a die casting machine and apparatus for the same capable of producing high-quality die-casting products, which are not produced with fins, even in a high-speed cast or the use of the die with a low precision. A pressurizing controllable valve (21) is a flow adjustable type. A main spool (211) is structured to have a two-way valve (212) with a check-valve function and a position detector (213) for controlling servo, so that the flow of hydraulic fluid charged to a pressurizing cylinder device 20 is not controlled to be switched between ON-OFF but is allowed to adjustably flow, and a pressurizing process is controlled in response to a fin critical curve, thereby fins are previously avoided to be produced, thus producing the high-quality die-casting productions.

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patent: 5662159 (1997-09-01), Iwamoto et al.
patent: 5671797 (1997-09-01), Nozaki et al.

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