Negri Bossi USA Inc. rolled out a hybrid press called Janus at NPE2009, molding chip-dip bowls on a press with 350 tons of clamping force.
General Manager Liam Burns said the hybrid design, combing hydraulic and electric motion technologies, is attractive to buyers who might balk at the price differential in higher tonnages between all-electric and hydraulic machines, but who still want an energy efficient press.
Direct-drive servo motors power mold clamping and screw rotation. Smart-pump hydraulics run injection, ejector/core pull and carriage movement.
At NPE2009 in Chicago, Burns said Negri Bossi can outfit the Janus with an accumulator.
Janus series presses come in eight sizes, from 160-900 metric tons, with shot capacities from 3 ounces to 220 ounces.
Standard components include Bosch hydraulics and smart pumps, Siemens servomotors and drives, digital proportional valves, a bimetallic barrel with a hardened screw and ceramic heater bands.
Burns said Negri Bossi is in a good position to offer customers the best technology whether that be all-electric, hydraulic or hybrid with the same controller across the full range of machines. The company is based in New Castle, Del.
Also at NPE2009, Negri Bossi:
* Molded liquid silicone rubber cupcake trays on a 132-ton Canbel LSR series VR all-electric, Negri Bossi's next generation of servo-driven presses. The cycle time was 35 seconds. M.R. Mold & Engineering of Brea, Calif., supplied the mold, which had a sequential valve gate system.
* Showed a 610-ton Canbel VE all-electric press, sporting an injection capacity of 56 ounces.
Copyright 2009 Crain Communications Inc. All Rights Reserved.