The Procter Gamble Company

The Procter & Gambel Company

Myron Lee Stuebe

Stephen Douglas Congleton

James Michael Fleming

Mark David Whaley

Eric Christopher Berg

Todd Michael Yeagle

A control arrangement decoupled two driven inputs for driven belt web accumulators using gear trains, gear trains with torque feed-forward control or gear trains with toque feed-forward control and velocity feedback control.

Web accumulator having limited torque disturbance

The automatic registration control system of the present invention is a closed loop system including a driving mechanism for feeding a continuous web of disposable absorbent articles, such as diaper pads, toward a cutter. The cutter may separate completed pads from the web. A sensor is positioned along the manufacturing line, and preferably preceding the cutter, for detecting at least one preselected feature of each diaper pad and producing a detection signal when the feature passes by the sensor. A position resolver determines the angular position of the cutter at the moment when the preselected diaper feature is detected, and the average angular position is calculated from a predetermined number of cutter positions. The average cutter position is compared to and subtracted from a target cutter position to produce an error signal. The error signal is then converted into a control signal and supplied to a phase variator which adjusts the position of the cutter in response to the control signal.

Diaper registration control system

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Cincinnati, OH, United States of America

Myron Lee Stuebe