Method of detection of abnormality of squeeze pin and...

Details Method of detection of abnormality of squeeze pin and... Method of detection of abnormality of squeeze pin and...

2007-02-20

2008-05-13

Johnson, Jonathan (Department: 1793)

Metal founding

Process

With measuring, testing, inspecting, or condition determination

C164S120000, C164S319000, C164S154200, C164S154800, C164S155300, C164S155400

Reexamination Certificate

active

07370687

ABSTRACT:
A molding machine able to stably detect an abnormality of a squeeze pin, for example, a die cast machine having a squeeze pin able to apply pressure to a melt of a cavity repeatedly performing a molding cycle including a pressing process making the squeeze pin advance and applying pressure to the melt of the cavity in a state where the melt is filled in the cavity and a spray process making the squeeze pin advance and performing at least one of lubrication and cooling of the squeeze pin in the state where the melt is not filled in the cavity, and, in the spray process, detecting a stroke of the squeeze pin and detecting an abnormality of the squeeze pin based on a comparison of the detection result about the stroke and a predetermined reference value.

REFERENCES:
patent: 5787963 (1998-08-01), Tsuji et al.
patent: 6810940 (2004-11-01), Tsuji et al.
patent: 07328758 (1995-12-01), None
patent: H09-225619 (1997-02-01), None
patent: 2001-212661 (2001-08-01), None
patent: 2004154805 (2004-06-01), None
Korean Office Action issued in counterpart Application No. 10-2007-0016882 mailed Jan.21, 2008.
English Abstract of JP Publication No. 2001-212661, published on Aug. 7, 2001.

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