Sumitomo Demag’s latest productivity-enhancing solution in injection molding is an automatic inline color changing system from Japanese vendor PigMic coupled with one its SE50EV-A injection machines equipped with a screw especially designed for quick color changes. The PigMic system directly feeds dry color pigment to the injection screw at a loading of 0.2–0.3%. The machine on show at IPF was also equipped with a camera from Japanese company CAM Co. used to monitor the color change process and detect rejects optically. Color changes can typically be accomplished within eight minutes using the system.
|Quick color changes are the forte of the PigMic system here coupled with a Sumitomo Demag 50-tonne all-electric machine.|
Sumitomo Demag also introduced a high-speed, all-electric injection molding machine for thin-wall container molding. The 350-tonne clamping force SE350HSZ-Pack was molding PP cups weighing 26 g each in an eight-cavity mold in a cycle time of 4.5 seconds. The fast cycle time, 0.4 seconds quicker than previously possible, was achieved through what Sumitomo Demag calls CYC-Link, which allows more overlapping of the individual steps of the injection molding cycle. The machine also featured improved performance through high-response injection and high plasticizing capacity. In all, the SE350HSZ-Pack can reportedly produce 400,000 more cups per month than a machine that does not employ CYC-Link.