Automatic diameter measurement

As coils can reach diameters of up to 3m, sensors are required that have a measuring range between 0.1m and 3m. optoNCDT ILR laser distance sensors are suitable for this. These sensors can measure distances of up to 150m and are often used in logistics, cranes or even for diameter measurement. The optoNCDT ILR 118x sensors used operate according to the phase comparison principle and so are significantly more accurate than conventional sensors, which operate using the time of flight principle.

When the spooling drive is accelerated to its laying speed, the ring diameter at the decoiler drive must be known in order that both drive stations accelerate at the correct speed for the same strip tension. Mechanical engineering company MEMA from Menden produces, amongst other things, respooling machines for metal strips. Finished coils are produced in the respooling machine from individual ring-shaped metal bands. The metal rings are joined together coil by coil so that one continuous coil is produced.