Apparatus and method for manufacturing die-cast product

Details Apparatus and method for manufacturing die-cast product Apparatus and method for manufacturing die-cast product

2005-03-29

2005-03-29

Stoner, Kiley S. (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S137000, C164S452000, C249S064000, C249S151000

Reexamination Certificate

active

06871688

ABSTRACT:
Fluid pressure of a first fluid chamber of a driving means, which acts as a back pressure, is monitored by a monitoring means when a core pin is driven by the driving means in an inserting direction before injection of a molten material into a cavity of a die arrangement. When the monitored fluid pressure of the first fluid chamber exhibits abnormal behavior that is different from normal behavior observed during a normal period, the monitoring means controls the driving means to stop the driving of the core pin in the inserting direction.

REFERENCES:
patent: 4919189 (1990-04-01), Sato et al.
patent: 4958676 (1990-09-01), Kuntz
patent: 6460601 (2002-10-01), Brehm
patent: 6681835 (2004-01-01), Maeyama et al.

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