Method and apparatus for charging metal to a die cast

U.S. Patent Number: 5388633

Abstract: An automatic ladling system is described for delivering a molten metal to the mold or die of a molding or casting machine. The ladling system comprises a programmable logic controller (PLC) for monitoring and controlling the sequential delivery of shots of a precise quantity of molten metal from a furnace or holding pot to a shot delivery apparatus of the casting machine. In the preferred system, the PLC also monitors and/or controls the temperature of the molten metal in the holding pot, the temperature of the molten metal in a metal transfer system, the operation of a pump for pumping molten metal from the holding pot to the shot delivery apparatus, the level of molten metal in the pot, and the operation of the casting machine.

Inventors: Mercer, II; William E. (Clute, TX), Baker; Carl F. (Lake Jackson, TX), King; Harvey L. (Lake Jackson, TX)

Assignee: The Dow Chemical Company (Midland, MI)

Application Number: 08/017,099

Issued: 1995-02-14

Expired: 2007-02-14

Classes: 164/457 ; 164/136; 164/155.4; 164/155.7; 164/312; 164/337

Field of search: 164/3,4.1,133,136,155,312,304,305,335,337,500,250.1,457,155.5,155.6,155.7,150.1 266/230

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