EW January 2011

Stranding, twisting, bundling & bunching

Drive units for bunchers Techna International represents Joachim Uhing KG, a manufacturer of rolling-ring and timing-belt linear drive units and systems. A recent development in this field is the RegBlue wireless signal transmission system for double twist bunchers.

Rolling-ring drives operate by converting unidirectional, rotary motion of a round, unthreaded, hardened shaft into totally backlash- free, automatically reciprocating, bi-directional linear travel. Such drives are equipped with infinitely variable pitch and can, by utilising slowdown reversal mechanisms, reach a speed of up to 4.2m per second. A simple “free-movement” lever allows for manual disengagement and re-positioning of the unit on the shaft and automatic reciprocating travel is achieved with a constant shaft speed and rotational direction, with automatic reversal at set positions (changeable by the user) or controlled by pneumatic or electromagnetic actuators. All functions (reversal, stroke width, pitch per revolution and free-movement) can be remotely controlled and heavy loads or high forces can be accommodated with additional load carriers.

RegBlue from Uhing ▲ ▲

Eight models cover shaft diameters from 15mm to 80mm diameter with up to 3,600N side thrust. The RegBlue system provides interference-immune Bluetooth wireless technology for handling signal transfer for traverse winding units without slip-rings and in particular, for use with double twist bunchers. Operators can externally adjust the stops of a rolling-ring drive, or can control the reversal points of a traverse unit with a spindle or timing-belt, while the system is operational. Optional length measurement of wound material and the connection of wire-break sensors causing the machine to stop can be provided where required. The RegBlue system consists of (1) a receiver unit installed inside the rotating bows of a buncher, (2) a controller with transmitter installed in the machine’s switch cabinet (antenna must be inside the soundproof hood) and (3) a control box located where visual contact with the spool is possible (all three can be installed in a separate single enclosure). Techna International Ltd – UK Fax : +44 1923 219700 Email : sales@techna.co.uk Website : www.techna.eu

GER SA sells stranding and bunching machinery park

GER SA Nessonvaux (Belgium) plays a major part in buying and selling second hand-machines on a worldwide scale.

The company recently sold the entire stranding and bunching machinery park of a medium-sized wire and wire rope factory in Italy to one of its long-term customers in India, also a well-known producer of wire ropes.   The sale included 15 tubular stranders/closers of different configurations and sizes, six double-twist bunchers as well as accessories and more than 600 bobbins. GER SA – Belgium Fax : +32 87 26 02 01 Email : ger@ger.be Website : www.ger.be

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EuroWire – January 2011