Melt Control in an Injection Molding System
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United States of America Patent
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Issued Date -
Oct 13, 2016
app pub date -
Mar 12, 2014
filing date -
Mar 18, 2013
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Abstract
Injection molding systems described herein are configured to produce more uniform injection molded parts in one or more mold cavities corresponding to nozzles of a hot runner. The injection molding systems include sensors that detect one or more physical properties of a melt having been dispensed into the respective one or more mold cavities. A controller is configured to adjust the heat output from one or more heaters based on the sensed physical properties of the dispensed melt. Further, each nozzle of a hot runner may include a balance heater for heating an area of the nozzle body and a tip heater for heating an area of the nozzle tip. The controller of the injection molding system is configured to independently adjust the heat output of each balance heater of the hot runner.
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