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Arburg will focus on cost-efficient injection-moulding automation solutions and fully electric Allrounder machines at the NPE in Chicago, from 22-26 June 2009.

The fully electric Allrounder A machine series features servo-electrically driven axes, which enable simultaneous machine movements and resulting short cycle times.

The high level of efficiency of the servo-electric drives and the toggle-type clamping unit ensure energy-efficient operation.

The excellent positioning accuracy of the electric-movement axes ensures high reproducibility and part quality.

The accuracy of the axis movements allows quick and precise synchronous entry into the mould, which optimises cycle times.

At the NPE, this will be demonstrated on the largest representatives of the Alldrive machine series, which now covers a clamping force range of 500 to 3,200kN (55 to 352 tonf).

An assembly injection-moulding application will be presented on an Allrounder 520 A with a clamping force of 1,500kN (165 tonf).

This process can increase moulded-part complexity, integrate assembly steps into the injection-moulding process and increase the cost-efficiency.

The high flexibility of the fully electric Arburg machines is demonstrated by the 570 A, with a clamping force of 2,000kN (220 tonf).

This is not merely a two-component machine: an LSR is processed in parallel with a thermoplastic.

Furthermore, both machines are equipped with a vertically operating Multilift V robotic system.

Rico and Simtec, co-operation partners of Arburg, will use a hydraulic, two-component Allrounder 570 S with a clamping force of 2,000kN (220 tonf) to present a further automated LSR/thermoplastics application.

The third fully electric machine is the new Allrounder 720 A with a clamping force of 3,200kN (352 tonf).

The largest Alldrive machine was presented for the first time at Technology Days and will have its first trade-fair appearance at the NPE.

Although production systems in the injection-moulding sector are becoming more complex, programming and control must remain simple and reliable.

The Selogica control system fulfils this requirement.

A production cell in conjunction with a vertical machine on which metallic inserts are encapsulated, shows how the advantages of such a system can be transferred to external robotics.

The hydraulic Allrounder 375 V features a clamping force of 500kN (55 tonf) and a size 170 (3.7oz) injection unit.

This vertical machine thus represents a machine series that is ideal for the encapsulation of inserts.

The Allrounder V machines are characterised by their free-space system and the fixed lower-mould platen.

The advantage of this is that the inserts do not become dislodged.

Due to the free-space system and the low table-heights, these Allrounders are suitable for manual and automated insertion and removing moulded parts, which is demonstrated at the NPE.

Here, a six-axis robotic system is used, the control system of which features an integral Selogica user interface.

This enables the machine installation technician to program all movements of the robotic system in a schematic sequence within his familiar injection-moulding environment, without external assistance.

Communication with the Selogica control system is via the robotic interface and an additional fieldbus expansion.

This expanded real-time connection makes complex mould-entry operations easy to implement.

The advantages of this solution can be clearly seen.

Operation of the six-axis robotic system is in accordance with the same simple principles as that of the Selogica machine-control system.

The entire sequences are programmed via symbols.

This means that no specialised knowledge is required for programming.

Arburg will also present the smallest Allrounder machine of the S series, a hydraulic Allrounder 170 S with a clamping force of 150kN (17 tonf), a size-30 (0.5oz) injection unit and a position-controlled 12mm screw.

The exhibit is equipped with an eight-cavity mould and will produce micro gear wheels with a part weight of 0.001g, in a cycle time of 9.5 seconds.

A special POM micro-granulate will be used for the production of these micro components.

Because of the intricate structure and small size of the part, a vacuum performs individual removal.

To perform removal with high precision, the removal unit of the Multilift H robotic system is centred on the mould.

Two vacuum circuits for the gripper and discharge functions, as well as two further circuits, are required for reliable pick-up of these precision components.

Finally, the precision parts are set down according to cavity via a tubular system.

A comprehensive pre and after-sales service is available.

The range of services is rounded off by training courses and fast spare-parts delivery.

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