EoW January 2014

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News
Technology
January 2014 59
Since forming, WTM has always had customer satisfaction as
its main target.
This has meant listening and understanding the different
production needs and designing the equipment with the aim of
offering the best and the most advanced technological solution.
Together with the evolution of the cable industry, WTM has
achieved a very high technical and technological level with its
machines, in different fields of tape application and treatment.
The taping lines for the insulation with polyimide and PTFE
tapes have been integrated with sintering (sealing) systems
developing the technology of salt bath ovens in addition to the
traditional IR light and resistors ovens.
The taping machines, in particular those with horizontal layout,
are put in line with induction pre-heaters, if requested, then
ovens, with fully automatic opening and closing movements
during start-stop phases.
Subsequently, the layer is consolidated by compacting units
and cooling equipment. WTM offers the treatment of multiple
wires, including with different diameters, to obtain final
products of very high quality.
Knowing all the problems and criticality of coaxial cables, WTM
has designed lines that treat such cables with extreme delicacy,
through the elimination of vibration sources and of repetitive
errors/noises.
Dancers are also eliminated from these lines with the aim of
reducing the quantity of surfaces in contact with the cable, and
even devices that help to avoid curving the cables through the
production process are employed.
The results are cables suitable for extremely high frequencies
having good signal transmission and reduced stationery waves.
In the field of the machines for testing cables, WTM produces
lines that allows the testing of cables through torsions and
bending movements so to submit the production at the most
severe international norms.
WTM test machines are multi-position, and have the widest
possibility of setting: times, rotation angles, speed, cycle
numbers, etc.
One of the latest and most advanced solutions is the Visio
System which has been created for helping cable production
with several overlapped tapes wrapped in the same direction
with constant displacement.
It is now available for many different measurements and for
quality control procedures, even on the whole surface of the
taped cable.
WTM Srl – Italy
Website :
WTM’S innovations through the years
Competitive advantage through
radio-based wire tension control
With its radio-based RTM X42-series and a wide range of
force measuring rollers, FMS offers innovative, trend-setting
systems for wire tension control in stranding machines.
Since its first introduction two years ago, RTM X42 has
evolved from a pure tension monitoring device to a
multi-purpose control and analysis system. Its ingenious
interface concept has been expanded to now provide recipe
controlled operation and the processing of encoder signals.
The product family is offered in four different basic versions. A
sensible combination of these versions is possible.
• RTM X42.IO: With analogue outputs for controlling
capability via a PLC
• RTM X42.PC: Tension monitoring with data processing
and analysis capability
• RTM X42.MODBUS: Provides a flexible interface concept
adapting to any bus system used in the machine. It allows
real-time control of breaks or drives
• RTM X42.MP: Processing of encoder signals eg for close
loop control of drives and the control of the traverse
guide in individual bobbins
RTM X42 utilises force measurement rollers to capture the
tension value of individual wires or strands, and then securely
transmits this data from the rotating to the static portion of
the machine. This all happens over a radio link and without
troublesome slip rings.
FMS Force Measuring Systems AG – Switzerland
Website:
Phone: +1. 828.885.8444
Phone USA 800.992.2402
Fax: +1. 828 884.7494
E-mail:
Website:
KEIRManufacturing Inc.
Features:
• Improved bow strength (no
holes)
• Wire is out of the airstream
• Bow shaped like a wing for
improved aerodynamics and
low cw factor
• Wear strip eliminated and
replaced by wear bushings
with windows for easy
inspection and dust cleaning
• Wear bushings can be
changed while bow is
mounted on the rotor
Advantages:
• Lower power (amps)
consumption and reduced
noise
• Higher TPM – maintaining
wire quality
• Reduced bow breakage
• Increased life on wear
surfaces reducing down-
times andmaintenance
• Wire breakds are contained
within the bow – extending
bow life
USPatent 6,233,513
, , andOther
PatentsPending
Wire 2014
Stand 10C63