Automatically controlled casting plant

Details Automatically controlled casting plant Automatically controlled casting plant

1980-05-13

1981-11-10

Baldwin, Robert D.

Metal founding

Control means responsive to or actuated by means sensing or...

Control of feed material enroute to shaping area

164335, B22D 3700

Patent

active

042992680

ABSTRACT:
A casting plant comprises a pressure ladle and a small-capacity tilting ladle to regulate the filling of molds making up a casting line and successively moving to a position beneath the tilting ladle. The control system comprises two servo loops. One servo loop includes sensors acting upon a motor to control the angular position of the tilting ladle so that the level of metal in the pouring gate of the mold remains constant during the pouring operation. During this time, an optical sensor, an angular-position sensor, and a pressure sensor included in the other servo loop supply input data which are processed to supply a signal acting upon a valve in a gas line feeding the pressure ladle. This valve regulates the flow of molten metal from the pressure ladle to the tilting ladle so that the quantity of metal contained in the tilting ladle remains substantially constant.

REFERENCES:
patent: 3343591 (1967-09-01), Lorang
patent: 3791437 (1974-02-01), Yamada et al.
patent: 3818971 (1974-06-01), Schutz
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patent: 3842894 (1974-10-01), Southworth et al.
patent: 4019563 (1977-04-01), Bergman et al.
patent: 4084631 (1978-04-01), Kunzmann
patent: 4210192 (1980-07-01), Lavanchy et al.
patent: 4227565 (1980-10-01), Lavanchy et al.

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