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March 2013 32 EuroWire – January 2012
All components under control
▲ ▲ New cable coating system from Extrudex s
Technologynews
3
High-end technology guarantees speed,
accuracy and sustainability.
This could be the headline for the order to
develop and produce a new cable coating
system.
The line was ordered by the cable
manufacturer Lapp GmbH, at the end
of 2011, designed and built by Extrudex
Kunststoff in Mühlacker, Germany, and
accepted by the customer at the end of
June 2012. The line went into production
at Lapp GMBH Kabelwerke in Stuttgart,
Germany, during the summer of 2012.
Lapp designs and produces cables
and conductors for different industries
and markets, such as mechanical and
systems engineering, the automotive
industry, MSR technology, electrical
and installations engineering, and EDC,
among many others.
The trial run of the new cable coating line
ran just like clockwork. It was quite an
achievement to jacket a variety of cables
in a variety of polymers (PVC, PUR, TPE
and HFFR) during the entire acceptance
phase.
The more than pin-point accurate laser
measurement system integrated into
the line – to an accuracy of 10,000th of
a millimetre – monitors even higher
accuracy than the permitted tolerance for
the cable.
This is entirely due to highly precise Lenze
servo control.
The system is extremely accurate
with regard to wall thickness control,
performance enhancing and economic
when it comes to materials as well
as energy. The system is easily and
quickly changed over, for example
from a yellow-coated single-core 7mm
earth cable with two green stripes to
multi-core and thicker or thinner cables.
Extrudex can manufacture power lines
with a maximum thickness of 55mm.
Those, however, will be run straight, ie
without dancer or cable accumulator and
without diverters. Cables up to 30mm
diameter are run with dancer and cable
accumulator control.
The entire line has a length of 43 metres,
with a process length more than three
times that. As a space-saving measure,
storage lines are placed above the
cooling line, running in the opposite
direction. They are indispensable in
allowing the change of the cable drum
without stoppage.
Extrudex Kunststoff GmbH – Germany
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