RIETER – YOUR SYSTEMS SUPPLIER
Integrated installations from Rieter off er more than just spinning machinery covering the entire process range from fi ber to yarn. Perfect coordination of the machines throughout the process chain ensures economical manufacturing of the required yarn quality. In addition to its machine expertise and as a result of numerous engineering innovations, Rieter off ers its customers support from the original business idea right through to the achievement of market success through yarn innovations.
RIETER – YOUR PARTNER FOR THE FUTURE
With Rieter as your partner you benefi t from the following supplementary services:
· complete mill planning, spinning schedule computation and cost calculation
· automation options tailored exactly to customer needs
· SPIDERweb data acquisition system for on-line monitoring of the entire spinning mill
· process optimization and technical recommendations derived from broad-based technological expertise covering all spinning process stages right through to downstream processing
· worldwide service network and intensive customer training on-site or at the Rieter Training Center
· spare parts deliveries, a wide range of innovative and technically superior solutions in the sphere of conversions
You can have confi dence in solutions from Rieter!
UNCOMPROMISING QUALITY
The foundations for yarn quality and thus the quality of the textile end product are laid in the blowroom process. This is the basis for the successful, worldwide use of Rieter’s A 11 UNIfl oc automatic bale opener. The A 11 UNIfl oc bale opener processes the fi ber material gently and effi ciently into microtufts, from which impurities can be removed especially readily in the subsequent processes. This eff ectively supports the quality and economic effi ciency of yarn manufacturing.
The A 11 UNIfl oc is the fi rst element of a complete, self-contained process chain in Rieter’s quality- and performance-oriented blowroom system. The distinguishing features of this highly effi cient bale opener are:
· bale opening into microtufts for eff ective cleaning and dust extraction
· uniform take-off of bale lay-down by means of «bale profi ling»
· simultaneous processing of up to 4 assortments
· patented, individually interchangeable double teeth on the opening roller
· processing of cotton from all sources and man-made fi bers in staple lengths of up to 65 mm
· output of up to 1 400 kg/h (carded sliver)
· bale lay-down over a length of 7.2 to 47.2 meters
· take-off width selectable between 1 700 and 2 300 mm
· graphic interface for easy, intuitive operation at the control panel
· interface to higher-level control and information systems available
· maximum yield due to optimized processes
THE UNIFLOC OPERATING PRINCIPLE
Gentle bale opening
FUNCTIONAL TO THE LAST DETAIL
The A 11 UNIfl oc processes cotton from all sources and manmade fi bers in staple lengths of up to 65 mm. The bales being opened are placed lengthwise or crosswise on both sides of th bale opener, and the take-off unit can process up to four diff er ent assortments.
Reduction of the raw material into microtufts is assured by the patented double teeth on the take-off roller and the grid with closely set clamping rails.
The unique geometry of the double teeth ensures the uniform treatment of the entire bale surface. Retaining rollers traveling with the take-off unit prevent bale layers from sloughing and ensure precise, controlled operation over the entire height of the bale.
The take-off unit is lowered by a preselected or computed distance at each pass. Running-in and running-out programs compensate for the diff ering hardness of the bales over their cross section and ensure a uniform level of production. The fan in-
corporated in the swiveling tower extracts the opened tufts and feeds them into the tuft channel running between the guide rails. Transport to the following machine is pneumatic.
THE PERFECT SYNTHESIS
Quality for economy
INTEGRATED BALE PROFILING
Bale Profi ling guarantees totally uniform bale take-off . The height profi le of the bale lay-down is precisely detected by light barriers and memorized. Scanning is performed at a constant speed of 9 m/min. Tufts are already taken off in the profi ling phase. Continuous feeding of the subsequent machines is thus ensured from the outset.
During the subsequent passes the bales are opened at the preselected speed of travel and take-off depth. In the process the system automatically compensates for diff erences in height in the bale profi le. Labor-intensive manual leveling is eliminated. After the required height range, take-off depth and speed of travel have been entered for each group of bales, take-off proceeds fully automatically.
CONSISTENTLY HIGH OPERATIONAL READINESS
The double teeth enable maintenance intervals to be halved. The teeth are mounted individually. They can easily and quickly be replaced if required, without removing the take-off roller. This explains the exceptionally high operational readiness of the A 11 UNIfl oc.
SAFETY INCLUDED
Precision for high productivity
MICROTUFTS – PREREQUISITE FOR SUPERIOR YARN QUALITY Trash and dust can only be removed from natural fi bers gently and effi ciently on the surface of the tufts. This fi nding was an essential consideration in the design of the A 11 UNIfl oc. The take-off unit is at the heart of the system. The patented take-off roller and the grid design with small gaps between the clamping rails enables small fi ber tufts – microtufts – to be extracted. The twin-tooth profi le ensures uniform, gentle and effi cient extraction of the tufts, also irrespective of the take-off roller’s direction of rotation.
EFFECTIVE PROTECTION OF PERSONNEL AND MACHINERY
A comprehensive safety concept ensures that the process is totally safe for personnel and machinery. A wide variety of actions contribute to the eff ective shielding of potentially endangered zones:
· ultrasonic sensors on the take-off unit register movements and bring the machine to an immediate standstill if necessary
· collision safeguards on the chassis and take-off unit stop the machine in the event of prohibited manipulation by personnel, detect obstacles and prevent collisions
· a core safety feature is the mechanical drop safeguard of the take-off unit; it provides eff ective protection for both personnel and machinery
· the articulated fl ap integrated in the take-off unit actuates a
machine stoppage on contact with large extraneous matter in
order to protect the A 11 UNIfl oc and subsequent machines
All hazardous areas are protected. Personnel can therefore perform operations such as checking extraneous matter, collecting samples and laying down bales directly at bale lay-down. The safety systems are also prevented from responding unnecessarily to minor interventions and thus actuating interruptions to production. The unit’s effi ciency therefore remains at a consistently high level.
AUTOMATIC BALE OPENING
Flexible bale lay-down
There is space on each side of the A 11 UNIfl oc bale opener for laying down up to four groups of bales of diff erent lengths;
up to four assortments can be assigned to these in optional sequence.
A wide range of customer needs are catered for with possible bale lay-down lengths of 7.2 to 47.2 meters and two take-off unit lengths of 1 700 mm and 2 300 mm. The maximum version can accommodate up to 40 000 kg of raw material. This ensures fl exible, economical and largely autonomous processing on the A 11 UNIfl oc bale opener.
INTELLIGENT SOLUTIONS
Tower rotating programs enable the number of take-off cycles on one side of the bale to be specifi ed before rotation through 180° as required. The tower is rotated via position slides, which can be located at any point between the assortments.
In the system as a whole four carding lines can be connected with a wide range of assortments. This high degree of integration is a further outstanding indication of the operational flexibility of Rieter’s A 11 UNIfl oc automatic bale opener.
EASY OPERATION
The control panel is placed facing the extraction duct, providing a clear view and safety for operating the machine. Setting and control of the A 11 UNIfl oc can easily be performed at the screen. In the interests of optimum monitoring of the installation as a whole, this modern machine control unit can be connected to the UNIcontrol or UNIcommand control system. UNIcontrol und UNIcommand also provide the interface to Rieter’s higher-level SPIDERweb mill monitoring system.
Rieter Machine Works Ltd. Klosterstrasse 20
CH-8406 Winterthur T +41 52 208 71 71 F +41 52 208 83 20 sales.sys@rieter.com
