Method for determination of the size and location of an end head and the location of an end head stack in a roll wrapper

摘要

This publication discloses a method for the determination of size and location of end heads in a roll wrapper. According to the method, the end head is transferred by means of a pickup arm over photocells and the instants of photocell output signal changes are measured. The distances between the intersect points are determined on the basis of the obtained intersect times and the speed of the end head, and the size and location of the end head are then determined on the basis of the obtained intersect distances and the distance between the photocells. The obtained measurement results are used for controlling the end heading machine.