Safe printing with igus energy chain system

Design company ensures reliable ‘lights-out’ robot operation

Whether creating unique store concepts, futuristic concrete stairs and modern building facades, Dutch architectural design company Aectual produces very special architectural projects, with the help of its robot-driven XXL 3D printer.

For reliable ‘lights-out’ robot operation, the designers opted for highly flexible chainflex cables from igus in a triflex R energy chain, with a pneumatic retraction system. In the 7th axis, an E4/light energy guide supplies the robot with energy and data.

Aectual’s design projects are described as “unique, modern and functional”. The company manufactures custom-made floor coverings, features, walls and stairs that create a special, visual experience. Using 3D printing, Aectual can realise even the most complicated concepts of designers, project developers, builders and architects.

Art works are high-flyers

These printed works of art can be found, for example, in Amsterdam's Schiphol Airport, where 2,000 square metres of floor space with an integrated floor guidance system adorn the airport concourse. The facades and interior elements are manufactured with the printer, one of the largest of its kind in Europe and the only printer if its size that runs "lights-out" i.e., remotely without server access.

The robot can print at speeds of up to half a metre per second. Aectual's material extrusion technology is integrated directly into the robot. The raw material or granulate, which consists of bio-based or recycled material, is melted in the extruder and pushed directly into the push nozzle via a screw. The extruder uses several different sensors and driven components to control the process.

When laying the material, using analogue and digital signal cables proved to be a challenge. The many cables should be arranged as compactly and robustly as possible to maintain lights-out operation. igus was able to supply the right cable protection system with its energy chains and cables.

Safe cable routing on the robot

"With the help of chainflex robot cables, we were able to make our system cleaner, more reliable and more efficient,” explains Hedwig Heinsman, co-founder & chief commercial officer at Aectual. “Since all cables have the same connectors, they can be easily replaced when they need to be changed. The design of the easy line replacement also gives us the opportunity to equip our extruder with other digital manufacturing tools in the future."

All cables are guided safely by a triflex R energy chain, which is specially developed for three-dimensional applications on robots. It ensures there are no line twists or fails. Aectual relies on a pneumatic retraction system (RSP) to retract the cables on the robot head. "In this way, we guarantee safe guidance of the cables and hoses, even with large arm diameters and very complex movements," says Justin Leonard, e-chains director at igus UK. "The retraction forces are infinitely adjustable to the individual application by using a pneumatic cylinder."

igus motion plastics products

As well as the six axes of the robot, Aectual also relies on igus motion plastics products for supplying power to the robot’s 7th axis, where the developers use an E4/light energy chain to move the cables safely. The chain is characterised by its low weight, large interior space and a cost-effective price.

A triflex R energy chain filled with chainflex cables ensures fail-safe operation of the XXL 3D printer. (Source: Aectual)
A triflex R energy chain filled with chainflex cables ensures fail-safe operation of the XXL 3D printer. (Source: Aectual)
Aectual’s print shop produces unique products for interior design and architecture, such as B room dividers and façade panels, protective and façade systems (Source: Ossip)
Aectual’s print shop produces unique products for interior design and architecture, such as B room dividers and façade panels, protective and façade systems (Source: Ossip)

igus (UK) Ltd

51A Caswell Road
Brackmills
Northampton
NN4 7PW
UNITED KINGDOM

+44 (0)1604 677240

sales@igus.co.uk

www.igus.co.uk

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