The long view for ring spinners
SENTINEL is the key to optimized yarn production.
Ring spinning machines are getting longer. And that’s a trend
that is noticeable in some markets, where ringframes run to as
many as 2,000 spindles – or about 70 meters in length. Even with
good human eyesight capable of reaching 5,000 meters, it’s still
not possible to have a total overview of end-breaks along the
full extent of the frame. Only an automated system can monitor
if the spindles are all operating correctly.
Since normal walking pace is about 4,000 meters per hour, an
operative would typically need about one minute to arrive at an
end-break at the last spindle on the frame. So, the spindle
could be easily back in action again within two minutes –
assuming, of course, that the operative knows exactly where to
USTER® SENTINEL – The Ring Spinning Optimization
Ring spinning optimization
It’s a fact that high-performance potential and enormous
ring-spinning machine capacity are worthless if spindles are at
a standstill because of end-breaks. USTER® SENTINEL is the
answer: its bobbin build-up report is the key to optimized yarn
production. The system’s unmatched detection of end-breaks
provides the basic platform. USTER® SENTINEL guides machine
operators straight to spindle breaks, through clear and simple
indications by red light dots.
End-break levels are a key indicator of ring spinning
performance, so USTER® SENTINEL’s intuitive bobbin build-up
report includes every parameter influencing end-breaks. Clear
visuals point to exact reasons for breaks, making optimization
easy. Spinners can then make the required improvements, focused
on ambient conditions, wear of mechanical parts and machine
With real-time performance information, USTER® SENTINEL
offers mills the data to raise yarn production efficiency to the
next level. Its easy-to-use software gives a rapid, tailor-made
overview of machine performance, highlighting exactly the most
relevant production and laboratory data. An attractive feature
is the real-time information on energy consumption. Only with
real-time data can mills take the opportunity of immediate
The real difference
Combining this total control of end-breaks with USTER® ROVING
STOP leverages the efficiency of yarn production. The instant
stop of roving feed at an end-break reduces waste significantly
and makes raw material usage more cost-effective. Calculations
show that 70% less pneumafil waste equates to a saving of nearly
1% in raw material, based on current spinning conditions.
Obviously, this makes for a shorter investment payback too.
Reduced levels of waste and uncontrolled fiber fluff prevent
quality issues around neighboring spindles and along the entire
Furthermore, better operating conditions and reduced repair
times result in higher yield and fewer quality issues.
Badly-performing spindles are reliably identified and other
issues which often impair the spinning process – such as idle,
rogue and uniquely off-quality spindles, as well as spindle slip
– are all monitored for fast response.
The summit of production efficiency
Human limitations on eyesight and speed are irrelevant with
USTER® SENTINEL in place – and even the multiple number of
spindles in a ringframe makes no difference. Downtime is kept at
the lowest possible level – an unbeatable achievement also
thanks to the unique design of USTER’s ring spinning
optimization system. The streamlined and uncluttered profile of
the USTER® ROVING STOP is geared to optimum machine performance.
The distinct compact shape ensures easy and effortless piecing
access, since its sensors don’t need to be positioned too close
to the ring, which also saves time and speeds up responses.
For the ultimate in quality optimization, USTER® SENTINEL is
ready for connection to the Total Testing Center of USTER®
TESTER 6. Here, data from all spinning processes is integrated
and interpreted, providing comprehensive guidance for users to
maximize both efficiency and quality.