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Wire & Cable ASIA – November/December 2014
Technologynews
CABLES must meet ever more
demanding tasks. As a
consequence, cable design is
continually becoming more and
more complex. In order to comply
with these requirements, cable
manufacturers need up-to-date
equipment which operates
economically and can be used to
produce reliably and efficiently all
types of data and special cables.
The DSI type double-twist
stranding machines developed by
Niehoff meet all these
requirements.
The DSI stranding concept is
based on the successful design of
Niehoff’s D series double-twist
bunching machines, which
represents a long-established
experience in the design of wire
bunching and cable stranding
machines dating back to the late
1960s.
After the newly developed series D
bunching machine had been met with
great acclaim by the market on its
introduction in 1997, the first Niehoff
stranding machine followed in the early
2000s, based on this series of
machines. The already field proven
double-twist stranding machines DSI
631 and DSI 1001 are designed to
manufacture insulated conductors into
pairs or quads or to strand conductor
pairs into special cables with or
without foils.
Compared to conventional cable
stranding machines, energy
consumption and noise emissions of
the DSI machines are significantly
reduced due to their one-bow design
and a state-of-the-art energy saving
drive technology. A further
characteristic is the contactless
machine data transfer system which
minimises maintenance and
operational and material costs. The
new DSI type machines are equipped
with the newly designed and
standardised NMI (Niehoff Machine
Interface) touch-screen display with
colour user interface and simplified
navigation structure.
The DSI machines are built for a wide
conductor cross section range and a
maximum strand diameter of 8.5mm or
15mm, respectively. The lay length can
be freely adjusted over a wide
range within a very narrow
tolerance band. A DSI stranding
machine can be combined with a
whole range of units and pay-offs
thanks to its modular design. One
of the special features is the
double-twist backtwist pay-off,
which enables up to three foils to
be applied to a cable under
controlled foil tension in inline
operation. With the ‘triple twist’
function, the production speed can
be substantially increased even
further.
Because of the modular concept,
DSI stranding lines can be
adapted to the requirements of
each user and flexibly modified to
manufacturing scheduling and
planning and to changing cable
designs and specifications. If a
line is not fully utilised with the
stranding of data cables, it can be
used to manufacture other cables. It is
also possible to realise new
manufacturing processes and to test
the production of new products.
Another advantage for users of these
and other Niehoff systems is that the
company supports customers with
comprehensive process knowledge, a
professional after sales services and
expedient customer service. The users
of Niehoff technology therefore have
the tools at hand to benefit from further
development in the cable sector.
Maschinenfabrik Niehoff GmbH
& Co KG – Germany
Website:
Cutting-edge data cable manufacturing equipment
❍ Interior of a DSI 1001 type double-twist stranding
machine
Sicme Italia Impianti, a manufacturer of enamelled wire
machines, has introduced its latest high-technology wire
enamelling machine, the Super EG.
This machine can change the way enamelled wire is
produced and is the result of six years of hard work,
research and development.
The prototype of this plant was on display a week after wire
2014 and during the demonstration the machine was
running for aluminium wire diameter of 0.28mm at speed of
720m/minute producing excellent quality magnet wire with
tan-delta 197.0/ 251.7 C. This would make the Super EG
one of the fastest machines with 40 per cent more
production capability.
This super high speed and low cost production is possible
by a combination of electrical energy for motive and any
combustible gas like methane, propane, LPG, butane, etc,
for thermal energy.
Sicme Italia Impianti has already patented this technology
and is in the process of getting safety certificates from
governments of various countries.
Sicme Italia Impianti – Italy
Website:
Super fast from Sicme
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