Die casting machine and casting method

Details Die casting machine and casting method Die casting machine and casting method

2006-03-28

2006-03-28

Kerns, Kevin (Department: 1725)

Metal founding

Process

With measuring, testing, inspecting, or condition determination

C164S155300, C164S155400, C164S155500, C164S065000, C164S113000, C164S305000, C164S314000

Reexamination Certificate

active

07017649

ABSTRACT:
A die casting machine obtain to obtain a suitable reduced pressure and reliably prevent the entry of molten metal into a valve when reducing the pressure in a cavity and injecting and filling it with a molten metal for casting, provided with the valve for opening and closing an exhaust path, a position detector for detecting an open/closed state of the exhaust path by the valve, an injection apparatus, a position detector for detecting the position of the injection plunger, and a control apparatus for controlling the injection. The control apparatus outputs a control instruction for making it close the exhaust path to the valve when the detected position of the injection plunger reaches a valve closing position set before the speed switching position and stops the drive of the injection plunger when not detecting completion of closure of the exhaust path when the injection plunger reaches the speed switching position.

REFERENCES:
patent: 2785448 (1957-03-01), Hodler
patent: 4463793 (1984-08-01), Thurner
patent: 5022457 (1991-06-01), Iwamoto et al.
patent: 6808008 (2004-10-01), Kubota

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