Mold-pressing machine with liquid-mist injection
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United States of America Patent
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Feb 27, 1996
Grant Date -
N/A
app pub date -
Nov 18, 1994
filing date -
Dec 2, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a mold-pressing machine with liquid-mist injection, using atomizing nozzles (9) with a vortex chamber (27) delivering atomized liquid mixed with air through outlet apertures (26), compressed air constantly being supplied to the atomizing-air nozzle (29), while the liquid nozzle (28) receives liquid under pressure through a liquid conduit (19,25), a liquid duct (31) and a slave valve (32,33) controlled by the liquid pressure solely in those periods, during which the liquid mist is desired to be injected, the new feature is that the liquid conduit (19,25) comprises a fast-acting air-escape valve (13), possibly of the same kind as those being used with pneumatic cylinders, causing any air having penetrated into the liquid duct (31) during the rest intervals because of a leak in the slave valve (32,33) to flow to an escape conduit (21). With this arrangement, the formation of air pockets in the liquid conduit is prevented: such air pockets would otherwise reduce the quantity of the liquid being supplied to the liquid nozzle (28) during each succeeding cycle.
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