Electronics in the Control of Automatic Splicing.

A recent improvement to splicing on the fly is the introduction of an electronic control system to the Butler splicer. This small solid state analog computer employs highly reliable integrated circuit electronics and is compatible with the conventional electric and pneumatic circuitry it commands. Tachometers provide such input intelligence as web speed and roll rpm while a potentiometer supplies information on dancer position. The output of the electronics is converted to a pneumatic signal by means of an electric/pneumatic transducer. During the splice cycle, dancer velocity as well as the braking of the expiring roll to a stop is under control of the electronic package. Desirable auxiliary features include automatic splice actuation through continuous computation of running roll diameter and electronic sensing of dancer velocity and zero web speed. supplies information on dancer position. The output of the electronics is converted to a pneumatic signal by means of an electric/pneumatic transducer. During the splice cycle, dancer velocity as well as the braking of the expiring roll to a stop is under control of the electronic package. Desirable auxiliary features include automatic splice actuation through continuous computation of running roll diameter and electronic sensing of dancer velocity and zero web speed.