Control device and method for controlling the driving system of a packaging machine
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United States of America Patent
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-
Mar 20, 1990
Grant Date -
N/A
app pub date -
May 11, 1988
filing date -
May 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a packaging machine in which a leading unit for advancing a film web and forming it into a continuous tubular shape during its travel, a feeding unit for supplying articles to be wrapped into the film tube, and a cutting unit for at least sealing the film tube along the transverse direction, are driven by independent motors, a method for controlling the motors includes controlling the running speeds of the motors for the feeding unit and the sealing unit on the basis of the running speed of the motor for the leading unit. A control device for carrying out such a method includes detectors for detecting conditions including positions of the leading unit, feeding unit and sealing unit, and a control unit connected to the detectors for controlling the motors of the feeding unit and the sealing unit on the basis of signals from the detector which detects operating conditions of the leading unit.
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