Article dispensing – Automatic control – Of discharge assistant operation
Patent
1981-12-04
1983-09-06
Rolla, Joseph J.
Article dispensing
Automatic control
Of discharge assistant operation
221 22, 221 73, 156584, B65C 942
Patent
active
044024240
ABSTRACT:
A machine for individually dispensing die cut pressure-sensitive labels from the carrier web of a label train. An AC synchronous stepping motor rotates a pair of drive rolls for a predetermined time period sufficient to move the label train from a supply roll past an infrared detecting member to a discharge end of the machine. The web moves downwardly over the discharge end of the machine and partially discharges an individual label. A microswitch is actuated upon complete dispensing of a label, which sends a pulse through appropriate control circuitry to reactuate the stepping drive motor which advances the label train to partially dispense the next label. The infrared detecting member senses the density difference of the label gap between adjacent labels on the moving web and sends a stop signal to a timer of the control circuitry which will deactivate the motor at the end of the predetermined preset time period. A potentiometer in the control circuitry enables the label feed time to be adjusted by modifying a time delay signal in the motor stop circuitry. The gap sensing prevents accumulated error in the stop position of the partially dispensed labels due to misplacement of labels on the carrier web, and the potentiometer enables the machine to be readily adjusted to accommodate labels of various lengths.
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Columbia Research and Manufacturing Co., Inc. Bulletin RSE.
Ohio Electronics Machinery, Inc.
Rolla Joseph J.
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