Just a few years ago, no one would have expected the rapid speed of screw packaging machines going digital. With the speed of the electronic process getting faster, there is a need to increase the distribution box. However, when the number of cables required for a bus system can be greatly reduced, together with the appearance of decentralized computers, it means that there is no need to increase the size of the distribution box. Today, stand-alone distribution boxes are not necessary in the packaging industry. Digital packaging machines take up less space than previous mechanical or electromechanical packaging machines.
Automation brings about packaging changes: The automation era of the packaging industry began about a year ago. At the time, all-mechanical equipment was equipped with a programmable logic controller (PLC) for controlling the logic functions and the mechanical power shaft of the drive. However, the flexibility of this first generation of automation equipment is not satisfactory. Consumer products, especially foods, have a shortened life cycle and the products tend to diversify, inspiring greater demand for equipment flexibility. In later developed second-generation automation equipment, more and more functions were transferred from the mechanical power shaft to the electronic drive system, and the logic function was still controlled by the PLC system.
The logic functions originally performed by the PLC are losing its importance, and now it is the electronic motion function that prevails. As the requirements for the flexibility of the equipment have progressed, the number of servo motors has also increased. This means that physical and logical interfaces are no longer needed due to different programming languages and systems. Since the mid-nineties, some companies have driven the trend of integrated motion control and logic control solutions in the area of screw packaging machines.