Dispensing – Molten metal dispensing – With subjacent flow guide
Patent
1985-07-26
1987-09-15
Rolla, Joseph J.
Dispensing
Molten metal dispensing
With subjacent flow guide
222600, 222512, 222567, 198576, 198736, B22D 3700
Patent
active
046934014
ABSTRACT:
An apparatus for changing casting nozzles such as immersion nozzles easily, quickly, and reliably. The apparatus has a holder frame fixed to the bottom of a molten metal pouring device and defining a substantially C-shaped casting nozzle travel passageway composed of a new-nozzle insertion passage, an old-nozzle ejection passage extending parallel thereto in spaced-apart relationship, and a joint passage connecting the new-nozzle insertion passage and the old-nozzle ejection passage to each other, and having a casting position where the casting nozzle is held under compression; a spring box mounted in the holder frame and having outer side portions resiliently supported by springs on opposite sides of the holder frame across the casting nozzle travel passageway, the spring box having on inner sides thereof guide rails forming part of side portions of the casting nozzle travel passageway, a nozzle moving mechanism mounted on the holder frame for moving the casting nozzle along the guide rails; and a lifting mechanism for lifting the casting nozzle in unison with the spring box in response to movement of the casting nozzle along the guide rails until the casting nozzle is fittingly held against the bottom of the molten metal pouring device.
REFERENCES:
patent: 2999579 (1961-09-01), Kostrzewa
patent: 3352465 (1967-11-01), Shapland
patent: 3907022 (1975-09-01), Simons et al.
patent: 4079869 (1978-03-01), Meier et al.
patent: 4220271 (1980-09-01), Szadkowski
patent: 4415103 (1983-11-01), Shapland et al.
Nishimura Takahiro
Ohnuma Masao
Handren Frederick R.
Kurosaki Refractories Co. Ltd.
Rolla Joseph J.
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