Injection control method of die cast machine

Details Injection control method of die cast machine Injection control method of die cast machine

1991-08-09

1993-05-04

Batten, Jr., J. Reed

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164154, 164155, B22D 1732

Patent

active

052072673

ABSTRACT:
A stroke-end position of an injection cylinder of the die cast machine is detected and a position of the injection cylinder for sending a boosting-signal is set. This position is a predetermined standard boost stroke distance from the stroke-end position. When the injection cylinder reaches the position for sending the boosting-signal in the casting cycle, an oil-pressure intensifier is advanced. In this method, before casting is performed, a value representing a stroke after slowing-down and a setting value of the plunger stopping position are determined and the start point for slowing-down is calculated by subtracting the value of the stroke after slowing down from the setting value.

REFERENCES:
patent: 3731727 (1973-05-01), Mitamura et al.
patent: 4019561 (1977-04-01), Aoki
patent: 4660620 (1987-04-01), Ozeki
patent: 4884621 (1989-12-01), Ban et al.
"The Twin Circuit Multiplier System", Article describing the German application 2,021,182.
Derwent World Patents Index, English Abstract of German application 2,021,182.

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