Page 46 - July-August-2018

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the take-off roller is fed back into the electricity grid.
A further refinement that makes the A 12 UNIfloc
extremely energy-efficient.

A 12 UNIfloc – The Art of Safety is prioritized
With the design of the new model, personal safety
Modern Automatic Bale Opening has been givien high priority. Especially with the 2D
scanner, significant progress has been achieved in
terms of safety standards. The 2D scanner is
The A 12 UNIfloc is an extremely robust and stable Bale profiling – innovative bale scanning immune to external influences such as temperature
new development with a previously unrealized With the new design of the A12, a new control and air currents and immediately recognizes when
machine concept. The machine has been newly technique has been realized. Alongside the new a person enters the danger area. Additional
designed from scratch and offers the customer high servo-drive concept, it also includes an innovative mechanical devices secure the working area of the
productivity, flexibility and easy handling. and efficient „bale profiling“. The take-off unit A12 UNIfloc.
determines the bale height and bale condition by
means of scanning force measurement. This allows By measuring of the volume flow rate, the process
rapid equalization of the bale laydown. is monitored and congestion of the machine is
prevented. In this way, all prerequisites for safe and
Quick changeover with multi-assortment operation smooth production are complied with.

Fig1. A 12 UNI oc – the modern and e cient method of opening bales
In 1978, Rieter revolutionized the principle of
automatic bale opening and thus the blowroom
process with the A 1 UNIfloc. Then, for the first time, Fig2. High production after bale group change thanks to patented bale scanning
bales were processed from above with a take-off unit Fig3. Gentle, continuous extraction of the microtufts - thanks to patented
wobble disc take-o roller
mounted on a mobile tower. Since then, Rieter has The UNIfloc with innovative bale scanning (Fig.2)
successively developed this machine in line with rapidly achieves high production after changing to a Microtufts – the basis for good cleaning
market requirements. The new A 12 UNIfloc sets new new bale group. With 2 000 kg/h line production, it The interplay between the scanning force
standards in terms of performance, stable reliably supplies the cards. measurement and the patented wobble disc
construction, modern safety technology and energy take-off roller with 312 double teeth ensures a
efficiency (Fig.1). Furthermore, the multi-assortment operation continuous extraction to small, uniform fiber tufts,
provides flexibility by processing up to three different the so-called microtufts (Fig. 3). Opening bales to
Solid and maintenance-friendly assortments simultaneously. In cotton processing, microtufts is the basis for effective cleaning and
The construction basis for the A 12 is the the VARIOset function on all Rieter cleaning dedusting by the subsequent blowroom process.
„monocoque“ design. This was developed for the machines allows a maximal raw material yield to be
aircraft industry to allow a light, robust and achieved, as every assortment is allocated an The new A 12 is the absolute highlight and
torsion-free construction. This method was also used optimal machine setting. Therefore, the subsequent innovation in the technology of automatic bale
to build the cockpit of the Formula 1 vehicles, to B 12 UNIclean pre-cleaner is automatically adjusted opening and offers Rieter quality right from the start
reliably protect the pilot. via VARIOset to the properties of the material type of the production process.
being fed.
The new, innovative construction with the A 12
UNIfloc is especially shown by the self-supporting Energy efficiency with the latest drive technology
construction of the tower and the take-off unit. In To fulfill the strictest energy standards, drives Uwe Nick
comparison to the previous generation, the number belonging to the highest efficiency class are used. Product Manager Blowroom /
of individual parts has been massively reduced, as The future-oriented drive concept of the A 12 has Card Machines & Systems
been systematically developed on torque-controlled
no profiles and covers are necessary. The focus was servomotors. A servo unit with the latest technology uwe.nick@rieter.com
on a robust, maintenance-friendly machine designed enables energy to be recovered. So, for example, the
for highest production. brake power which is generated during reversal of

July/August 2018