Cooling arrangement for valve stem gates in hot runner injection molding machine systems
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United States of America Patent
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-
Dec 10, 1991
Grant Date -
N/A
app pub date -
Mar 2, 1990
filing date -
Mar 2, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An injection molding machine and method in which a hot runner has heated nozzles and piston operated nozzles valves, the stems of the nozzle valves and the nozzle bushings have passages connected to the cylinders to carry cooling fluid to the cylinders to actuate the nozzle valves.
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