Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Feed control of material en route to shaping area
Patent
1989-06-23
1991-01-29
Heitbrink, Timothy
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Feed control of material en route to shaping area
264 403, 264 405, 264 407, 318138, 318254, 425149, 425150, 425589, B29C 4577
Patent
active
049882732
ABSTRACT:
An injection molding machine utilizing brushless DC motors in its servomechanism drive systems. Brushless DC motors provide a cost effective high power drive system which has the simplicity of control of brush-type DC motors. By utilizing higher resolution encoders and controlling pressure with the servomotor velocity control loop, motor cogging and zero velocity oscillatiions are minimized.
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Fanuc Autoshot T Series brochure.
Three Phase, Asynchronous Servo Drive Systems by Ludwig Gall, Sep. 3-10, '86.
Getting the Most from Expanding Motor Technology, A Comparison of AC and Brushless DC by Howard G. Murphy.
Design Consideration and Performance of Brushless Permanent Magnet Servo Motors by A. Weschta.
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Faig Harold J.
Sparer Ronald M.
Cincinnati Milacron Inc.
Eby C. Richard
Heitbrink Timothy
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