More News in Electric and Hybrid Machines

Injection speeds up to 500 mm/sec are now standard on smaller sizes of all-electric Elject NEX machines from Nissei, represented here by Nissei America Inc., Anaheim, Calif.

Injection speeds up to 500 mm/sec are now standard on smaller sizes of all-electric Elject NEX machines from Nissei, represented here by Nissei America Inc., Anaheim, Calif. The 20-, 33-, and 55-ton models get the speed increase (from 300 mm/sec previously) through new low-inertia, high-powered servomotors that also deliver a 16-millisec response time—half that of previous design. That was just one new development from Nissei at the Tokyo IPF show. Another was an all-electric vertical machine for automotive insert molding. Model TNS50RE5VE is a 55-tonner with injection speed up to 300 mm/sec, 1-sec indexing time for the turntable, and swing-out injection unit. The compact design leaves room in three directions to coordinate additional automated auxiliary operations. Nissei also showed a new “X-Pump” system for the new series of PNX machines. All functions are hydraulic, though the hydraulics are driven by electric servomotors. These are adapted from the PN series, which have variable-volume hydraulic pumps, but are said to use 55% less oil and 40% less energy. The PNX series comes in 41 and 66 tons. It delivers injection speeds from 1 to 300 mm/sec with a 0.05-sec injection response time. The machines can retain high holding pressure for long periods. Nissei also demonstrated the X-Pump on a modification of its popular FN series, the 88-ton FNX 80, and on a hybrid version of the NEX machine with servo-driven hydraulics on the injection unit.