Conveyors: power-driven – Conveying system having plural power-driven conveying sections – With means for altering the speed of a section
Patent
1993-05-10
1994-06-07
Bidwell, James R.
Conveyors: power-driven
Conveying system having plural power-driven conveying sections
With means for altering the speed of a section
198572, 198781, 1983431, B65G 3700
Patent
active
053181670
ABSTRACT:
A control system for a power driven conveyor line having power driven conveyor zones adjoined end to end. Each conveyor zone includes a single drive motor, a transmission, driven conveying elements extending the length of the conveyor zone, and an adjacent workstation having a designated stopping point located therein. The control system includes a local controller for controlling the operation of one or more conveyor zones via remote command signals, a respective zone controller associated with each conveyor zone for controlling the operation of the conveyor zone in response to the remote command signals, and first and second sensors coupled to each zone controller for detecting different load positions along the conveyor zone. The first sensor detects the load which causes the zone controller to linearly decelerate the motor, and necessarily the load, from a first speed to a second speed. The second sensor, located downstream from the first sensor, detects the load which causes the zone controller to stop the motor via a DC injection braking signal. The load is stopped at the designated stopping point as it reaches the second speed.
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Bronson Stephen R.
Kettelson Russell W.
Bidwell James R.
Newcor, Inc.
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