Three years ago, at the last NPE, Mitsubishi fans got to see the company's first all-electric injection molding machines, but learned the company would use hybrid technology on large-tonnage machines. At NPE 2003, the results were on display.
MHI Injection Molding Machinery Inc., which sells the Japanese presses in the United States, displayed an EM Series hybrid press with 1,200 tons of clamping force. Everything on the press is powered by electricity except for the hydraulically powered final clamp-up, nozzle touch and core pull, according to David May, national sales manager of MHI in Addison, Ill.
Mitsubishi Heavy Industries Ltd. of Nagoya, Japan, sells all-electric presses up to 610 tons. The MEt series runs from 35-300 tons. The ME line goes from 390-610 tons. Hybrid technology runs the show in presses above 610 tons. The first hybrid EM press, a 950-tonner, was shown in late 2001 at an open house in Japan.
Also at NPE, the firm showed two ME all-electric presses of 55 tons and 390 tons.