Apparatus for controlling the angular orientation of the end of

Details Apparatus for controlling the angular orientation of the end of Apparatus for controlling the angular orientation of the end of

1976-10-08

1977-07-26

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Automatic and/or material-triggered control

156361, 156446, 242 56R, B26D 500

Patent

active

040381277

ABSTRACT:
An apparatus for accurately positioning the end of a web being wound on a roll at a predetermined angle of the roll. An operator sets up in thumbwheel switches a predetermined number representing the additional angular rotation of the roll after the web has been cut at a winding station in order to have the tail of the roll located at a desired predetermined angle at a second station. As the roll is wound, a sensor responds to an index that rotates in synchronism with the roll to provide a signal indicating that the roll is oriented at a known reference angle. A first pulse source generates pulses wherein each pulse represents a known angle of rotation of the roll as the web is being wound on the core. An electronic counter counts the number of pulses generated by the first pulse source between the occurrence of the signal indicating that the web has been cut and the reference angle signal generated by the winding station sensor. The number of pulses counted by the counter is combined with the predetermined number set up in the thumbwheel switches to generate a second control number representing the further angular rotation of the roll as measured from the reference angle in order to have the tail oriented at the desired predetermined angle. A sensor associated with the second location responds to the index to generate a signal indicating that the roll is at the reference angle when it is at the second station. A second pulse source generates pulses wherein each pulse represents a fixed angle of rotation of the roll at the second station. A counter counts the number of pulses generated by the second pulse source after the occurrence of a signal from the second station sensor. When the number in the counter is equal to the second control number, the roll will be prevented from further rotation and the end of the web will be at the desired angle.

REFERENCES:
patent: 3123315 (1964-03-01), Couzens
patent: 3282524 (1966-11-01), Couzens et al.
patent: 3477657 (1969-11-01), Norbisrath
patent: 3567145 (1971-03-01), Ernoult

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