Niigata is fielding its fourth-generation MD S-IV Series all-vertical and parting-line, double-toggle all-electric molding machines (35 to 165 tons). Key features include hundreds of patented and patent-pending standards, many said by company sources to be industry firsts. These include injection speeds up to 300 mm/sec, 1.5-second shockless table oscillation speed, and the longest pack and hold times of any vertical.
A-c servomotors drive everything from injection, screw rotation, mold open-close, ejection, and table oscillation. CPF control, one of those patent-pending specials mentioned above, smoothly decreases injection speed during fill, reportedly producing consistent, peak-free filling pressure.
Locating a load cell behind the screw for a more responsive reaction to melt pressure is another pending patent. Controllers, equipped with a color touch-screen GUI, are packed with all the features found in controllers for Niigata?s fourth-generation series of all-electric horizontal-clamp presses.
Prices range from $125,000 to $299,000, depending on configuration. Niigata has 21 years under its belt in manufacturing servodriven all-electrics. Its line of horizontal clamp presses range from 35 to 2000 tons. The company has discontinued building hydraulically driven presses, except for special orders.
Niigata Engineering Co. Ltd.
Daiichi Jitsusyo (American) Inc.