Advancing material of indeterminate length – With material-responsive control means – To regulate longitudinal movement of material
Patent
1993-10-12
1994-10-18
Stodola, Daniel P.
Advancing material of indeterminate length
With material-responsive control means
To regulate longitudinal movement of material
226 27, 226 36, 226152, B65H 2000, B41F 1354
Patent
active
053560620
ABSTRACT:
A roll feed apparatus of the type including a pair of rolls for clamping a workpiece therebetween and for intermittently feeding the workpiece, comprises a differential gear, operatively connected to at least one of the rolls, for rotating the roll(s). A mechanical feeding mechanism is connected to the deferential gear for outputting a rotational output thereof to the differential gear for effecting the intermittent feeding. Fine adjustment of the intermittent feeding is effected by an adjustment arrangement which includes a servomotor, also connected to the differential gear, for outputting a rotational output thereof to the differential gear, a rotational angle sensor for sensing a rotational angle of the servomotor to output a rotational angle signal representing the rotational angle sensed, reference position providing element for providing a reference position signal representing a reference position of the workpiece, and servomotor controller for comparing the rotational angle signal with the reference position signal to produce a signal representing the difference therebetween for controlling the servomotor to correct the difference.
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Sankyo Manufacturing Co. Ltd.
Stodola Daniel P.
Stryjewski William
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