WCA September 2018

Technology news

A flexible and adaptable approach to wire coiling

IN 1992, the Swedish company Lämneå Bruk invented a wire coiling machine – the No Twist Coiler (NTC). This flexible and adaptable machine enables fast and precise wire coiling at up to 40m/second. It is user-friendly with an up-to-date PLC control system. What makes this machine so flexible is that it can be used for a wide variety of different wire types ranging from welding, staple and fluxcore to spring wire. The machine is also suitable for drums of different shapes and sizes, depending on the individual customer needs. At this year’s wire Düsseldorf, Germany, and Wire Expo in Nashville, USA, Lämneå Bruk presented one of its new bestsellers: the No Twist Coiler (NTC) for spring wire. This machine will set a high standard of bedding and seating wire coiling and offers an advanced solution for spring wire coiling. The NTC reverses the pre-twist, and the wire comes out twist-free and straight. The wire drum is placed directly on the floor with no rotation. The wire is then uncoiled over top and guided through a conduit into the wire coiling machine. Additionally, the machine offers the advantage that no further straighteners are needed in the process, saving space and resources since no power is needed for the payoff. Due to that and the fact that there is no driven payoff, there is a constant back tension in the wire. This has been beneficial in producing springs of consistent and even quality, while the wire consumption per spring can be reduced at the same time. There is also the possibility to weld the drums together to have a continuous payoff into the spring machine.

❍ The No Twist Coiler (NTC) for spring wire

The coiling speed is increased with this machine for more efficient and high-quality output. Furthermore, the NTC for spring wire is equipped with an advanced PLC control system with eye-level display and user-friendly operator control. Lämneå Bruk AB – Sweden Website : www.lamnea.se

New-design rotary inline or crosshead die features speeds up to 1,000 rpm

co-rotating tip and die, rotating die with conventional tip, rotating tip with conventional die, crosshead or inline, multi-layer, striping, certain profiles and optional quick-change cartridges that minimise cleaning downtime. By using rotary dies, extruders can realise cost savings due to the elimination of secondary processes; cosmetic enhance- ment of the end product with the elimination of weld or parting lines; and reduction or complete elimination of ovality. Guill Tool offers its new high-speed rotary models as turnkey packages, complete with die cart, tools and all accessories for installation and maintenance. Guill Tool & Engineering – USA Website : www.guill.com

Guill Tool has launched a new design for its high-production rotary models, both inline and crosshead style. Doubling the increase in speed, models running to 1,000 rpm, depending on the application, are now available. By rotating the tooling in relation to the material flow, a rotary head increases the wall strength of an extrusion, thereby allowing a thinner wall with less material and the corresponding cost savings for the user. Typical applications for rotary heads include medical and multi-lumen tubing plus various high-end extrusions with interlocking layer or multiple striping requirements. Features offered on these new rotating extrusion dies include counter-rotating tip and die,

❍ The new design from Guill Tool

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Wire & Cable ASIA – September/October 2018

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