Machinery manufacturer Arburg (Lossburg / Germany; www.arburg.com) has introduced the “Allrounder H” range of injection moulding machines at a series of “technology days” at its Lossburg headquarters. The machines’ “Hidrive” hydbrid drive combines servo-electric and hydraulic components and offers high performance and production capacities combined with energy efficiency.

The range’s servo-electric clamping units originate from the electric “Allrounder A” series and are complemented by hydraulic injection units from the “Allrounder S” and performance-adapted hydraulic accumulator technology. Arburg says that Allrounder H machines also boast a correspondingly high injection performance in relation to the clamping force, thanks to “generously sized” injection units.

Servo-electric toggle-type clamping units allow fast, dynamic mould movements, leading to reduced cycle times. The axes can be moved independently, so simultaneous movements are possible in any combination. Highly dynamic injection and a large maximum injection flow rate also feature, along with the option of “flying” injection with simultaneous closing of the mould.

Servo-electric drives optimise energy use with up to 40% energy savings achievable as the braking energy of the servo motors is recovered and fed back into the mains, further optimising the machines’ overall energy consumption. Charging of the hydraulic accumulator is regulated so the pressure level is automatically adapted in line with real demand.