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Four-fold increase in load capacity

Multi-dimensionally moving energy supply system for a palletising robot

This energy supply system easily moves in all axis and reliably guides cables even with difficult geometries. This distiguishes it from corrugated hoses, which do not hold up over the long term when exposed to pronounced rotating motions. Expensive equipment downtime is the result. A German company relies on a universal module for all robot motions on its palletizing robot in a fully automated packaging line. The solution guarantees a long service life and reliability.
"We have rigorously relied on robot technology for our packaging plants for about 20 years", reports Michael Ruf, procurator and Deputy General Manager at Transnova-RUF Verpackungs- und Palettiertechnik GmbH in Ansbach (Central Franconia). They are each tailored to the respective customer application. Each year, we integrate more than 200 robots into our plants", states Michael Ruf. "They give our customers a maximum of flexibility for the final packaging process. “

Compact universal module

A foil packaging plant that is delivered as a turnkey facility now uses a compact triflex® RS universal module made by igus® GmbH, Cologne, for the palletising robot. The module ensures that the energy chain is always guided closely to the robot to avoid loops and unnecessary cable stresses. It is assembled on the existing mounting points on the robot and consists of a triflex® R multi-axis energy supply system, model 'easy', version B (TRE 60.B). The series is predestined for fast insertion of the various cables. Version B also provides an improved connection mechanism and increased stability, therefore resulting in further improvements of machinery or plant availability.
Limit stop dogs also ensure a defined mobility limit, therefore providing additional protection. The system also uses integrated fibre rods to reliably guide the energy chain and a cover system. This is a cover that holds the energy supply system in place when the robot operates in a vertical or overhead orientation.

Efficient and reliable packaging

With its approx. 220 employees, transnova-RUF supplies solutions for final packaging and palletising tasks, ranging from planning to design-engineering, assembly and commissioning. The product range includes individual compact machines for top and side loading, picking systems for fast pick&place applications, and robot systems for order picking, palletising, and depalletising tasks, and even fully customised final packaging lines.
"We are equipped to handle any type of primary packaging", Michael Rug explains. "This ranges from button batteries for hearing aids to complete control cabinets with a length of 2.20 m. " Ranging from food and non-food applications to medical or pharmaceutical technology: the specialist has flexible packaging solutions for any industry. The company has been growing in double-digits for years. 75 percent of its customers are located in Germany. And 90 percent of these are repeat customers. They are expanding existing plants or rely on the specialist for new investments.

Flexibility due to robotic palletising.

"Our robot palletising technology is principally characterised by high flexibility and a maximum of reliability", the procurator clarifies. Modular function groups allow handling of cartons, buckets, bags, plastic buffers, etc. The picking tools are capable of handling a wide range of pallets and intermediate layers.
In total, a foil packaging plant has a length of 60 m. Each foil roll is dedicated to a customer-specific order. Each foil roll can have a different length and/or thickness, and a resulting difference in weight. The foil material itself also differs. The various foil rolls are fed to the packaging plant in a chaotic manner and need to be flexibly handled based on the sequenced production orders. "This task is predestined for robot technology", explains Michael Ruf. "A total of nine robots are in use. “
The packaging process consists of the following steps: after production, the foils travel from cardboard rollers into the plant. Here, they are staged in a buffer or sorting station before they are subsequently coated with a protective hose-foil. The hose-bag protrusion is blown into the roll core with compressed air. The primary packaging unit has now been packaged and is then individually packaged, labeled, and sealed. The product is then palletised on two pallets by a long-arm robot. A top stretch winding secures the two respective pallet packaging units.
"The packaging plant will be operated 24/7", Michael Ruf underscores the requirement profile. The respective packaging weight ranges between 2 kg and 60 kg. The conveyor technology speed is approx. 40 m/min. 20 rolls per minute can be packaged.
Photo of the palletising robot. The turnkey packaging plant employs a very compact triflex® RS universal module for its palletising robot. It is installed on the existing mounting points on the robot and consists of a multi-axis energy supply system, integrated fibre rods and an enclosure for special protection.
Cables are easily and conveniently clipped in. Cables can be easily and conveniently clipped into the energy supply system.
Photo of the additional stop dog The additional stop dog ensures even greater stability. The bending radius increases four-fold.
Photo of the component Components for the multi-dimensionally moving energy supply system from the construction kit system.
Picture of the involved persons Werner Pecher (igus® GmbH, left), Michael Ruf (transnova-RUF GmbH, right).

Four-fold load capability

The requirements profile for the energy supply system is quickly summarised: long service life and high mechanical protection for cables. Axis 3 to 6 in particular are subject to pronounced rotating motions. A corrugated hose cannot rotate around its own axis. When torsion occurs, there is a risk that it will tear and disintegrate into its constituent components. The entire plant shuts down. Cable damage must also be prevented for the long-term. For the named reasons, the packaging specialist has decided to rely on a plastic energy supply system.
The multi-dimensionally moving multi-talent triflex® R is permanently torsionable. The high flexibility is an additional feature. A rotation of approx. +/- 10° per chainlink in the length axis is possible. This makes guiding cables around difficult geometries child's play. In contrast to corrugatesd hose, it also has a defined radius, which prevents kinking or damaging cables. The dual chamber system is yet another feature that ensures a clean interior separation. Bus and compressed air lines can be routed separately.
But this application has even more advantages: even greater tensile force absorption is accomplished with the updated trailer mechanism in the B version. It provides greater stability due to an additional stop dog. Due to its modular design, the energy chain can in principle be easily shortened or lengthened. In contrast to other commercially available systems, where the individual elements are connected with wire ropes, this allows length changes to be made quickly and conveniently. The triflex® R system connection works based on the trailer mechanism, similar to a trailer hitch. Due to the new operating principle of the triflex® R version, the bending radius load capability is increased by four-fold. In addition, much larger torsion forces are compensated.
The retract system with the two integrated fibre rods is an additional feature. The energy chain is located closely to the robot arm and always returns to its original position without hooking or forming loops. The cover, which protects the entire system, can also accommodate valve terminals when required, allowing the generally restricted installation space on robot applications to be exploited further.

Free samples

Both companies have been collaborating for years. In order to guarantee plant reliability, the packaging specialist relies on the multi-dimensionally moving energy supply system in the long arm robot in this application. Free samples during the preliminary design phase ensured that all design-engineering specifications could be thoroughly tested. "We had a positive experience. We were able to determine that the plastic chain remains shape-stable under any circumstance", Michael Ruf concludes. "This allows us to ensure high functionality. And since the requirements for load absorption continue to increase, a long-term collaboration is conceivable. “

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Los términos "Apiro", "AutoChain", "CFRIP", "chainflex", "chainge", "chains for cranes", "ConProtect", "cradle-chain", "CTD", "drygear", "drylin", "dryspin", "dry-tech", "dryway", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-loop", "energy chain", "energy chain systems", "enjoyneering", "e-skin", "e-spool", "fixflex", "flizz", "i.Cee", "ibow", "igear", "iglidur", "igubal", "igumid", "igus", "igus improves what moves", "igus:bike", "igusGO", "igutex", "iguverse", "iguversum", "kineKIT", "kopla", "manus", "motion plastics", "motion polymers", "motionary", "plastics for longer life", "print2mold", "Rawbot", "RBTX", "readycable", "readychain", "ReBeL", "ReCyycle", "reguse", "robolink", "Rohbot", "savfe", "speedigus", "superwise", "take the dryway", "tribofilament", "triflex", "twisterchain", "when it moves, igus improves", "xirodur", "xiros" y "yes" son marcas comerciales legalmente protegidas de igus® GmbH en la República Federal de Alemania y otros países. Esta es una lista no exhaustiva de las marcas comerciales de igus GmbH o de empresas afiliadas de igus en Alemania, la Unión Europea, EE.UU. y/u otros países o jurisdicciones.

igus® GmbH puntualiza que no vende ningún producto de las empresas Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsubishi, NUM, Parker, Bosch Rexroth, SEW, Siemens, Stöber y cualquier otro fabricante mencionado en esta página web. Los productos que ofrece igus® S.L.U. son los de igus® GmbH.