G 37 – High-Quality Ring Yarns Produced with High Efficiency and Unprecedented Flexibility

With the G 37 customers profit from a
top-quality machine, efficient energy utilisation with LENA spindles and IE4 main
motors as well as an optimised suction system. The semi-electronic drafting system allows a fast
change of yarn parameters. As a result, only little time is required for a
machine changeover. The integrated individual spindle monitoring system ISM
premium reduces personnel costs significantly and opens the door to the world
of digitisation. Besides efficiency, the G 37 is also very flexible. With the
new generation of compacting devices for compact yarn production and systems
for slub and core yarns, customers are optimally prepared to easily adapt to
new market conditions.

Energy-Efficient
Drives and Spindles

In ring yarn production, 50-60 per cent of
the energy costs of the whole spinning process are caused by the end spinning
machine. For this reason, Rieter is particularly investing in energy-efficient
and reliable technologies for the most important components like motors,
inverters and drive systems.

More than 80 per cent of the energy of the
end spinning machine is used for the spindle drive. Here, energy savings can be
achieved with the extremely efficient permanent magnetic IE4 main motor which
is developed for high spindle speeds. The motor can also be used profitably on
machines with fewer spindles and low speeds due to its permanent magnetic functioning.

In addition, the proven Rieter 4-spindle
tape drive with only one large drive motor shows great advantages. This drive
is energy-efficient, easy to handle and operates without failure. The low
contact pressure due to only 90° enlacement guarantees low energy consumption.
Furthermore, the LENA spindle reduces the overall energy consumption of the
machine by up to 4 per cent and is recommended for yarn counts Ne 28 and
finer.

Short Machine Changeover Time

In terms of efficiency, an outstanding
advantage of the G 37 machine is the easy yarn setting. The semi-electronic
drafting system allows quick gear change for yarn count settings (Fig. 1).
Parameters such as yarn twist and twist direction can be simply set by
fingertip on the operating unit. There is no need to change gears or make any
other mechanical adjustments which leads to less work for operating personnel.
The machine changeover time for a complete yarn parameter change including yarn
count, twist and Z or S twist direction is reduced to 65 minutes, compared to
145 minutes for a competitor’s mechanical system. The spinning of small batches
becomes much more economical.

CATEGORIES Spinning