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Before Leonardo appeared, standard rotomoulding machines required a lot of manual labor to manually load and unload molds. With conventional methods, the mold was rotated in a large furnace and the temperature was raised to 177°C. After warming up, the mold is sprayed with water and the mold is cooled until the plastic part can be pulled out of the mold. The combination of extreme temperatures and direct water cooling creates a harsh environment where standard automated methods such as hydraulics or pneumatics are not feasible. Moreover, because the ambient temperature affects the heating and cooling conditions, rotomoulding is only suitable for materials with many processing methods, such as PE and PVC.
With the Leonardo machine, Persico has developed a system that directly heats and cools molds in a temperature-controlled closed-loop system. This simple step no longer uses a large furnace, reducing energy consumption to a fraction of the previous level. Due to the controlled process temperature, Leonardo offers the ability to shape materials with less processing methods such as PP and other thermoplastics. Persico can use automatic material loading and loading and unloading of plastic parts to fully automate the machine and reduce manual labor to only one person at the start-up phase. Only one operator can control 4-8 machines like injection molding or extrusion.
Leonardo also has many indirect benefits. Because the temperature of conventional furnaces is high, the aluminum mold mounted on the steel frame is the only mold that can withstand the furnace temperature for a long period of time. The oxidation of steel and the contamination of plastic parts are a constant challenge for processing plants. The continuous expansion and contraction of aluminum and steel can cause mold friction, deformation and boundary problems. By changing the heating/cooling method, all of these problems do not exist. Leonardo produces a quiet and clean environment, offering stable, reliable and quality products.
Leonardo can also achieve die changeability and efficient, innovative cycle designs through operator-friendly process controllers. The machine operates at a single station, and all heating, cooling, and loading and unloading operations are performed at the same location. Compared with carousel machines, the required footprint of the aircraft is greatly reduced.
From the loading of the inserts to the pulling out of the molded parts, the Leonardo automatic rotomoulding machine can handle any task. From complicated multi-action molds to simple repetitive production, Leonardo provides an effective solution for increasing labor and energy costs.
Persico Launches New Automatic Rotational Molding System
Italy's Persico has introduced Leonardo, a new fully automatic rotomolding system that promises to revolutionize the rotomoulding industry.