Package making – With means responsive to a sensed condition – Of individual contents or group feed or delivery
Patent
1997-06-03
1999-06-08
Coan, James F.
Package making
With means responsive to a sensed condition
Of individual contents or group feed or delivery
53 481, 53201, 53257, 53507, 493478, 493479, B65B 5700, B65B 5900
Patent
active
059100907
ABSTRACT:
An apparatus for positioning a guide slidably mounted on a machine wherein the guide is driven by a lead screw turned by a DC motor through a worm drive gearhead. The DC motor is controlled by a programmable logic controller (PLC) with input from an operator interface and feedback from a hollow shaft encoder attached directly to a shaft extending from the lead screw. Ladder logic programming in the PLC directs the motor to run or stop based on comparing a target position for the guide with the current position based on electrical signals from said encoder. A home position for each guide corresponds to the guide's position when it has moved fully outward encountering an outward stop. The programming also allows manual jogging of the guide through the operator interface. The programming takes up mechanical backlash in the apparatus on each move by overshooting the target position a predetermined amount when a move is made in an outward direction. Moves in an inward direction proceed directly to the target position. A changeover cycle moves all guides to positions selected from previously stored positions.
REFERENCES:
patent: 5057068 (1991-10-01), Capdeboscq
patent: 5157903 (1992-10-01), Nakashima et al.
patent: 5517798 (1996-05-01), Klopfenstein
patent: 5626002 (1997-05-01), Ford et al.
Coan James F.
McLary Steve
Riverwood International Corporation
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