Power supply device for electrically driven injection molding machine and electrically driven injection molding machine
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United States of America Patent
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Aug 7, 2012
Grant Date -
Oct 1, 2009
app pub date -
Feb 9, 2009
filing date -
Mar 28, 2008
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power supply device for supplying an electric power to a servo amplifier is configured by an AC/DC converter and a power accumulating device. Among a molding cycle, during a process where an amount of consumed power is small, a DC voltage is supplied to the servo amplifier from the AC/DC converter and a power is accumulated in the power accumulating device. In a process such as an injection process where a large power is required, a high DC voltage is supplied to the servo amplifier from the power accumulating device in place of the AC/DC converter.
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