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INJECTION MOLDING: New Servo-Hydraulic Presses With Larger, Faster Touchscreen Controller

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Toggle presses from 180 to 500 metric tons.

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Negri Bossi North America, New Castle, Del., recently introduced the new Canbio ST series of servo-pump, toggle-clamp injection machines from 180 to 500 metric tons. They utilize new GH4 series hydraulic pumps from Bosch-Rexroth together with the latest three-phase synchronous motors and drive from Baumuller. The new servo-pump design is said to greatly improve energy efficiency and reduce sound levels to 50 dbA (comparable to a normal conversation). System response time reportedly has been cut in half, and improved pressure overshoot control minimizes material waste through overpacking.

The moving platen rides on linear bearings; the clamp also features “generous” tiebar spacing, long ejector strokes, and parts-discharge access on three sides. The injection unit slides on linear bearings and pivots with a quick barrel release.

A major feature of these presses is the new Tactus touchscreen controller with 43% larger (21.5-in.) display that can be operated even when wearing gloves. The controller offers communication speeds of only 2 millisec, vs. 4-8 millisec for other systems. It also has configurable option keys for quick selection and a Favorites function. Screens include the “cycle optimizer” and energy-consumption monitor. Also standard is AMICO software for remote real-time machine monitoring, parameter modification, I/O configuring, production reporting, software upgrades, etc.


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