Squeeze pin control system in die casting machine

Details Squeeze pin control system in die casting machine Squeeze pin control system in die casting machine

1996-12-20

1998-08-04

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164321, B22D 2711

Patent

active

057879630

ABSTRACT:
A method of precisely controlling the stroke of movement of at least one squeeze pin in a die casting machine, which pressurizes locally the molten metal charged into a cavity of a metal mold. The method comprises detecting a flow rate of the pressure oil at the back pressure side of a squeeze pin cylinder which drives the squeeze pin of the die casting machine, calculating the stroke of the squeeze pin on the basis of the detected flow rate, and controlling the stroke of the squeeze pin toward a target value with the detected flow rate as a parameter.

REFERENCES:
patent: 5161598 (1992-11-01), Iwamoto et al.
patent: 5555924 (1996-09-01), Iwamoto et al.

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