The main task of the aluminum strip cross cutting machine is to cut the aluminum strip that has been rolled by the cold rolling mill to the head and tail, trimming, straightening, crosscutting, and boring. The main equipments include uncoiling machines, cutting heads, disc shears, straightening machines, flying shears, belt conveyors, and sampan plates. The flying shear is one of the key equipments. It ensures high-precision cutting of the tape in the translational movement according to the required length, while ensuring that the shearing blade and the speed of other machines and strips of the machine are synchronized. System technical performance parameters: High machine speed: 60m/min, cut length: 1000-4500mm, shear error: less than ± 0.5mm, Unwinding larger tension: 20000N, uncoiling roll diameter: φ500-φ1700mm incoming width: 622-1060mm, incoming thickness: 0. 2-3. 2mm (depends on leveler). A. Positioning the traditional proximity switch to the automatic positioning of the shear-edge pulse code disc (automatically positioning when debugging or replacing the code disc) eliminates the disadvantages of proximity switches that have dead zones and are susceptible to temperature, vibration, and other factors. ; B. The cycle time of the main program execution is less than 1mS, which fundamentally guarantees the control accuracy. C. Changing the machine speed or cutting length online does not affect the normal cutting; D. The use of special optimized prescribing procedures greatly reduces the execution time of the prescribing procedure; E. The PLC adopts the master-slave mode of the PROFIBUS bus structure, which greatly reduces the on-site cable and wiring work. At the same time, the reliability of the system has also been greatly improved.
