17/04/2009 - From 4 to 8 May 2009, ARBURG will be represented with two ALLROUNDERs at the Brasilplast in Sao Paulo. At the exhibition injection moulding experts will have the opportunity to experience the high performance of the ARBURG machines at first hand. An electric ALLROUNDER 420 A with a high-speed, thin-wall application from the packaging sector and a hydraulic ALLROUNDER 570 C GOLDEN EDITION representing the cost-efficient and globally-successful GOLDEN EDITION machine series will be presented.

“The ARBURG ALLROUNDER GOLDEN EDITION machines have carved out the largest market share in Brazil; they are synonymous for economical injection moulding among our customers,” says Kai Wender, general manager of the Brazil subsidary, regarding the local situation.
 
Consequently, the presence of this successful machine series is a must at the Brasilplast: An ALLROUNDER 570 GPOLDEN EDITION with a clamping force of 2,000 kN and a size 800 injection unit will be presented. The maximum shot weight of this machine is 434 grams of PS. A stacking box weighing 259 grams will be produced from PP on the exhibition machine, which is equipped with a single-cavity mould. The cycle time will be 35 seconds.The successful GOLDEN EDITION machine series now comprises not only horizontal machines with clamping forces from 400 to 4,600 kN, but also vertical rotary table machines with a table diameter of 1,200 millimetres and clamping forces of 800 and 1,000 kN.
 
All the GOLDEN EDITION feature fixed clamping force/injection unit combinations and technologically-superior standard equipment. This includes, for example, highly wear-resistant plasticising cylinders for a long service life, fast-switching valve technology for high control precision and consequently high injection moulding quality. Furthermore, dual-pump technology permits simultaneous machine movements and the associated short cycle times. The SELOGICA ‘direct’ control system with touchscreen monitor offers a high level of operating convenience.

To meet the demands of the fast-growing packaging sector, ARBURG will demonstrate the high performance of its electric ALLROUNDER A at the Brasilplast by exhibiting a high-speed thin-wall application: A 500-gram rectangular container will be produced in a cycle time of 3.7 seconds on an electric ALLROUNDER 420 A with a clamping force of 1,000 kN and a size 400 injection unit. The part weight will be 15.7 grams.
 
The main axes of the ALLROUNDER A, with servo-electric drive as standard, enable simultaneous machine movements and the resulting short cycle times. Depending on requirements, the auxiliary axes can be driven either electrically or hydraulically via a small-accumulator hydraulic system. The high level of efficiency of the servo-electric drives and the toggle-type clamping unit ensure an energy-efficient operating procedure. Accordingly, the ALLDRIVE machines bear the ARBURG “e²” energy efficiency label.

High reproducibility and part quality are ensured thanks to the excellent positioning accuracy of the electric movement axes. The accuracy of the axis movements means that synchronous entry into the mould can be performed quickly and precisely, optimising cycle times.