Slitter-rewinder apparatus.

摘要

A control system for a slitter-rewinder apparatus which forms a web (14) of material into a plurality of individual rolls, the web (14) being unwound from around a supply core (16) and slit into strips (22) which are rewound about a plurality of individual product cores. The slitter-rewinder apparatus has at least one takeup roller (24; 26) adapted to slidably receive the product cores there about. The supply core (16) and the takeup roller (24; 26) are rotatably supported in spaced apart relationship with a portion of the web (14) extending therebetween, around at least one idler roller (18) and past a plurality of knives (20) which cut the web into strips (22). The slitter-rewinder apparatus further has a first controllable motor (32) for rotating the takeup roller and a second controllable motor (38) for rotating the supply core. The control system includes a sensor (50) for detecting the rotational speed of the product cores. The system also has control mechanisms responsive to the sensor for operating the second motor (38) to cause the speed of the supply core (16) to automatically increase and decrease in order to maintain a predetermined relationship between the speed of the product cores and the speed of the takeup roller (24; 26) throughout the rewinding process.