Mold fastening device and method of controlling the mold fastening device
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United States of America Patent
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May 6, 2014
Grant Date -
May 6, 2010
app pub date -
Nov 5, 2009
filing date -
Nov 6, 2008
priority date (Note) -
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Abstract
A mold fastening device has a fixed die plate, a rear plate, a movable die plate that can move back and forth, a toggle mechanism, and a drive motor that drives a cross-head. The position where the cross-head should be stopped is associated with the rate at which to accelerate the cross-head from that position or the rate at which to decelerate the cross-head to that position. The cross-head is operated at an acceleration that corresponds to that position. The drive motor is thereby driven at a constant output torque, regardless of the position of the movable die plate. Further, the time for opening and closing metal molds can be shortened.
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