EuroWire September 2023

Technology News

New flange-driven winder

Increasing demand and the need for sustainable design have led Kurre Systems to expand its range of flange driven winders with the new AB-W-1250 XL and AUF-W-1250 XL models. In response to customer requests for higher bobbin loads, the previous maximum load of 1,200kg has been increased to 2,500kg. To accommodate this high load, the engineers at Kurre subsidiary Siebe Engineering GmbH developed a new plastic compound. Despite the high loads, a take-off speed of up to 50m/min is possible. The new winders use bobbins with a diameter of 800 to 1,250mm and a maximum width of 930mm. The winder itself requires a footprint of just under three square metres, fully assembled. With its improved parameters, the new winder can be used more flexibly. During the redesign, special attention was paid to occupational safety. “The previous safety concept of the flange-driven winder was detailed, investigated and further developed,” said Arnaldo Martins, head of design at the Kurre Group. Handling during the individual production phases is closely linked to work safety. Mr Martins continued, “Only a concept that convinces the operator is a good one and will be accepted.” To ensure this, customers were able to test the new winder during the prototype phase. The findings from these tests were fed into

The new flange-driven winder features an increased bobbin load of up to 2.5 tons, with floor-level loading

the final design. A significant new concept, for example, is the infeed and outfeed of the bobbin at floor level. The operator simply rolls the bobbin into the winder – only approximate positioning is required. Kurre expects the new flange-driven winder to be used in applications such as braiding, taping and stranding lines, test rewind stands, heat treatment lines, quality assurance and cleaning. The technology will also be used in existing flange driven winder types in the future. Kurre Spezialmaschinenbau GmbH www.kurre-systems.de

Low-space mechanical wire cleaning GEO’s LS WST mechanical wire cleaning system removes trouble-causing con- tamination such as particles, fines and excessive drawing agents on wires and cables. The mechanical LS WST is suitable for treating most kinds of wire material, including soft metals such as copper or aluminium. The system uses textile tapes for cleaning or coating wires with round or rectangular cross-sections up to 13mm. The standard system layout consists of two modules – the drive unit for the textile tape transport, and one or two process zones. In the process zones of the wiping system, a woven textile tape is wrapped once around the wire surface. The continuously adjustable forward feed of the tape ensures that there is always clean textile strip in contact with the wire to be cleaned. Liquids for cleaning or lubrication purposes can be evenly applied to the material surface via an applicator by means of optional metering systems.

LS WST mechanical wire cleaning system

Owing to the short contact time between textile and material, as well as the low friction force required for cleaning, an accumulation of metal particles in the cleaning tape is avoided. Applications include in-line cleaning after the drawing process; cleaning of copper conductors before extrusion; and wiping before enamelling or cleaning and coating of welding wire. Customised versions are available, for example for use with flammable solvents.

GEO Reinigungstechnik GmbH www.geo-reinigungstechnik.de

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September 2023