Individual cavity shut-off valve for an injection molding apparatus
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United States of America Patent
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Sep 28, 2010
Grant Date -
Feb 26, 2009
app pub date -
Oct 6, 2008
filing date -
Jun 16, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
An injection molding apparatus includes a first nozzle having a first nozzle melt channel in fluid communication with a manifold melt channel, and a second nozzle having a second nozzle melt channel in fluid communication with the first nozzle melt channel. A nozzle link is provided between the first nozzle and the second nozzle and includes a nozzle link melt passage for fluidly coupling the first nozzle melt channel and the second nozzle melt channel. The second nozzle includes a plurality of outwardly extending melt passages in fluid communication with the second nozzle melt channel. The outwardly extending melt passages deliver melt to a plurality of mold cavities through a plurality of respective gate seals and mold gates. At least one shut-off valve is disposed within the second nozzle. The shut-off valve is associated with an outwardly extending melt passage and switchable between an open position and a closed position.
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