Uster Quantum Clearer

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a brief history about quantum clearer and the modern Quantum clearer on Winding machine

Text of Uster Quantum Clearer

Comparative analysis of USTER Electronic Yarn Clearers of last 10 years

Submitted To:

Mr. Zulfiqar

Submitted by:

Raheem umer Spinning E

05-NTU-043 8th Semester

Raheem Umer

05-NTU-043

Yarn Faults:................................................................................................................3 Electronic Yarn Clearing.............................................................................................4 Short history about the USTER yarn clearers..............................................................5 Brief Description of different models of Uster yarn clearers of...................................5 Uster Spectomatic...................................................................................................5 Uster automatic D...................................................................................................6 Uster Automatic C/W...............................................................................................6 Uster Polymatic.......................................................................................................6 Uster Peyer Clearer.................................................................................................6 Uster Quantum Clearer...........................................................................................6 Functions of the USTER QUANTUM CLEARER..............................................................7 1Triggering of alarms for exception events...........................................................7 Monitoring of Thick Places....................................................................................7 Uster Quantum Clearer Parameters:..........................................................................7 The capacitive measuring principle............................................................................8 The optical measuring principle.................................................................................9 23456USTER GRADES..................................................................................................10 USTER QUANTUM EXPERT with CAY...................................................................11 Foreign fiber clearing with USTER QUANTUM CLEARER.....................................12 Class Alarms.......................................................................................................14 Monitoring of the yarn joint process with the USTER QUANTUM CLEARER.........14

Raheem Umer

05-NTU-043

Monitoring of the yarn joint process with the USTER QUANTUM CLEARER

Yarn Faults:The principles of the spinning process for short and long staple yarns remained the same for many decades. Changes took place especially in the field of automation and production quantity per production hour in order to reach the highest production of yarn in a good quality at the least expenses for personnel, capital, and energy. For this, big technological progresses in each process stage were essential Despite this progress and many years of experience in spinning technology, it is still not possible to produce a fault-free yarn straight off. Depending on the raw material and state of the machinery park, there are about 20 to 100 events over a length of 100km yarn, which do not correspond to the desired appearance of the yarn. This means, that the yarn exhibits a yarn faults every 1 to 5 km. these kinds of yarn faults are places, which are too thick or too thin. Foreign fibers or dirty places in the yarn are also counted as yarn faults

Yarn faults cause disruptions in the subsequent process stages, which affect production and quality. Yarn faults, which get in the woven or knitted fabric, can only be removed at very high costs or not at all. Therefore, the yarn processing industry demands a fault-free yarn from the yarn producer. The spinner has to fulfill these demands; otherwise he could not sell the yarn covering his costs. The spinner can fulfill these demands by a combination of two measures: Raheem Umer 05-NTU-043

1- Prevent the origin of yarn faults by adequate measures. Remove yarn faults by the aid of yarn clearers. The measures to avoid the origin of yarn faults are numerous and start with the choice of the raw material, the maintenance of the machines up to the cleanliness in the spinning mill. Well educated, motivated personnel and an efficient quality management play also an important role.

Electronic Yarn ClearingYarn faults can be removed by following principle:

1- During the winding process from bobbin to cone, the yarn is completely monitored for yarn faults with an electronic device , the yarn clearer 2- As soon as the yarn clearer detects a yarn fault, the yarn will be separated by the cutter. The winding process is interrupted. 3- The yarn fault will be removed by the suction of the winding machine. 4- Ends, the upper yarn from the cone as well as the lower yarn from the bobbin, are going to be combined again. The yarn joint is done by splicing with a splicing device or knotting with a knotting device. The latter is only used very rarely for special yarns. A good splice should not be realized by the human eye. Present yarn clearer also monitors the quality of the yarn joint.

Raheem Umer

05-NTU-043

5- The winding process continues up to the next fault or until there is no yarn on the bobbin anymore

Short history about the USTER yarn clearersIn 1960, Uster technologies launched the first electronic yarn clearer, the USTER SPECTOMATIC. With one single, central setting it could be determined, form which size on a thick place should be cut. Once on the market, the demands for the yarn clearer rose steadily. Since then, USTER technologies could always fulfill the demands of the customers to their full satisfaction with innovative clearer models

Raheem Umer

05-NTU-043

Brief Description of different models of Uster yarn clearers ofUster SpectomaticUster Spectomatic was the first ever clearing device of the USTER Company. It was able to measure the thickness of the running yarn only at that time. This yarn clearer was introduced 1st in1960. This yarn clearing device was more like yarn monitoring device equipped with the USTER Knotter.

Uster automatic DUster Automatic D was a type of yarn monitoring telling the thin places as well. This device was basically for the coarser yarn which was easy to check for thin places. This yarn clearing device was optional in getting data of the yarn. This was first introduced in 1962 by uster with winding position control option.

Uster Automatic C/WThis model was introduced in 1977. It was made better then Uster Automatic D as it was able to measure the Long Thick places as well along with the thin places. It also had automatic adjustments to the different fibers.

Uster PolymaticThis was the famous Yarn Clearer patent by USTER co. in 1990. It was a complete yarn clearing device giving the option of all SLT monitoring. It has the following extra parameters which made it successful. Yarn count monitoring Yarn fault alarm Report Printer Event display

Uster polymatic was the most successful yarn clearer device which was just made better by adding some parameters. Otherwise the Modern USTER Quantum clearer is the basic Uster Polymatic.

Uster Peyer ClearerUster peyer clearer was the yarn clearer introduced by uster in 1996 with the addition of foreign matter detection. This yarn clearer had the metallurgy as well as the monitoring, was same as of uster Polymatic. This type had an improvement in

Raheem Umer

05-NTU-043

software which gave Pearl Chain and Scatter Plott which made things easier to understand.

Uster Quantum ClearerThis type was introduced in 1999. This is the latest model produced by the Uster co. this clearer type is modified day by day by adding some parameters but this clearer is the most compact form of clearer ever produced by Uster. It is still the unbeatable in autocone winders. This is clearer is equipped with all the previous clearer specialities and basic NSLT sensing.

Functions of the USTER QUANTUM CLEARERThe basic version of the USTER QUANTUM CLEARER can be expanded by several features and options. The numerous functions of the USTER QUANTUM CLEARER for a comprehensive yarn control can be summed up as follows: Monitoring and elimination of disturbing yarn faults Monitoring and controlling of machine functions Determination of quality parameters of the yarn Triggering of alarms for exception events In order to define the functions, over 100 settings can be carried out at the USTER QANTUM CLEARER. This stands in contrast to one single setting of the first clearer generation. One year after the introduction of USTER QUANTUM Clearer, uster technologies developed the software Computer Aided Yarn ClearingCAY as an option to the USTER QUANTUM CLEARER installation. The option is an easy-to-use tool to optimize the clearer limits for yarns which are not yet available in the data bank

Uster Quantum Clearer Parameters: 1- Monitoring of Thick PlacesIn order to be able to monitor and to evaluate thick and thin places as well as deviation from the desired yarn count, the thickness of the yarn must be converted into a proportional electrical voltage. The course of the voltage is called yarn signal

Raheem Umer

05-NTU-043

In USTER QUANTUM CLEARER, the conversion is carried out either with the sensor of the capacitive measuring principle or with the sensor of the optical measuring principle. The sensor is part of the intelligent measuring head iMK, which also consists of the electronic system to convert mass or diameter variation into an electric signal.

The sensor must be able to monitor a yarn which runs