WO2003031699A1 - Procede et appareil de controle pour verifier les valeurs caracteristiques d'un materiau fibreux - Google Patents

Procede et appareil de controle pour verifier les valeurs caracteristiques d'un materiau fibreux Download PDF

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Publication number
WO2003031699A1
WO2003031699A1 PCT/CH2002/000552 CH0200552W WO03031699A1 WO 2003031699 A1 WO2003031699 A1 WO 2003031699A1 CH 0200552 W CH0200552 W CH 0200552W WO 03031699 A1 WO03031699 A1 WO 03031699A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber material
fiber
characteristic values
sliver
testing
Prior art date
Application number
PCT/CH2002/000552
Other languages
German (de)
English (en)
Inventor
Theodor Götz GRESSER
Original Assignee
Maschinenfabrik Rieter Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10214657A external-priority patent/DE10214657A1/de
Application filed by Maschinenfabrik Rieter Ag filed Critical Maschinenfabrik Rieter Ag
Publication of WO2003031699A1 publication Critical patent/WO2003031699A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/26—Arrangements facilitating the inspection or testing of yarns or the like in connection with spinning or twisting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/006—On-line measurement and recording of process and product parameters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/36—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls with means for taking away impurities
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36—Textiles
    • G01N33/362—Material before processing, e.g. bulk cotton or wool

Definitions

  • the present invention relates to a method for testing fiber material for its characteristic values, a fiber material sample being fed to a testing device, separated and then processed into a sliver or yarn, and a corresponding testing device for testing fiber material.
  • DE 3448 095 C2 discloses a method for determining and classifying dirt and fine dust content in fiber materials. The fiber materials are opened to remove dirt and / or fine dust
  • the fiber materials and the excretions are then collected separately.
  • the fiber material is dissolved and exposed to a stream of suction air.
  • the fiber material is then centrifuged and the deposited deposits are discharged through separation openings and collected. Finally, the fiber material is fed to a fiber collection container.
  • the fiber material collected in the fiber collection container is in the form of a fiber band from the
  • Fiber collection container removed and inserted into the feed device of a rotor spinning unit. There it is processed into a yarn. With this device, it is possible to determine the percentage of good fibers, the trash content, the dust content and fiber fragments. Although very useful results are achieved, the work is still very time consuming. It must be one first
  • the characteristic values are automatically recorded and / or displayed at different points in the course of the processing of the fiber material sample in the testing device, in accordance with the characteristic values to be determined, and / or further processed to recommendations for the use of raw materials, for spinning processes and / or for machine settings.
  • the test device is equipped with various sensors which automatically examine the fiber material sample and determine a corresponding characteristic value of this fiber material sample.
  • the various characteristic values can be determined all the way through the test device. It is possible to check the dissolution behavior of the fibers both when feeding the fiber material, which will take place in particular as a fiber flake.
  • the fiber length, the short fiber content, the fiber fineness, the color, various irregularities such as trash, nits or dust and many other quality parameters of the fibers can be tested.
  • the test device also makes it possible to also examine the sliver or yarn resulting from the fiber material sample. Such examinations can be, for example, uniformity, hairiness, fineness or, in turn, impurities such as trash, nits and thick or
  • simulations for the further processing process can be represented from the determined yarn values. This can be simulations of thread, fabric and / or knitted fabric.
  • the recommendations or characteristic values determined in this way are automatically recorded by evaluating the signals determined from the sensors and can be displayed. If necessary, recommendations for the use of raw materials, spinning processes and for machine settings, which can also be displayed on a screen or on a printout.
  • the sample is processed continuously from the fiber flake or the fiber sliver to the fiber sliver or yarn.
  • the test device independently performs the check for the characteristic values or recommendations of the fiber material.
  • a sliver or yarn is produced from the fiber material sample without human intervention being necessary until then. This ensures that the fiber material sample can be examined quickly, safely and without the risk of falsification. It is therefore possible to have such a test carried out with a fiber material sample even when purchasing a fiber material, since the processing time until the characteristic values are ascertained can take less than 10 minutes. In special applications, however, it can also be advantageous if the process is carried out discontinuously. The process is interrupted and the fiber structure produced up to that point is fed back into the process.
  • the cleaning effort expresses the effort in numbers to clean the fiber material to a certain level.
  • To determine the cleaning effort of the Fiber material is the sum of the trash content of the fiber material in relation to the willingness to clean (Tges./Rw).
  • Another characteristic value created in an inventive manner is the processing behavior of the fiber material.
  • the processing behavior influences the process behavior and the visual appearance of the yarn or fabric.
  • susceptibility to nits is crucial here.
  • Such a characteristic value enables the fiber material to be assessed with regard to the quality of the further processed yarn.
  • Deteriorations in individual parameters can be achieved by processing the fiber material sample several times.
  • the tests can be carried out repeatedly in the device. This is particularly fast, reliable and therefore advantageous.
  • the material can also be passed through the test device several times and the corresponding characteristic value can be determined more reliably using these different results and with the possibility of further statements about the fiber material.
  • the tests may result in deviations in the measurement results.
  • the influence of the processing on the fiber material sample can thus be determined. From this, knowledge can be obtained as to how such processing affects the fiber material and, if necessary, whether such processing, which is often associated with damage to the fiber material, can also be omitted. If several processes of the same type are carried out on the fiber material sample, and the similar tests are carried out after each process, the knowledge can be drawn from this that a more or only slight improvement of the fiber material is achieved with more intensive or multiple processing.
  • Another criterion for the assessment of the fiber material is the load on individual components of the testing device when processing the fiber material sample. This load can also be recorded in characteristic values and used to assess the fiber material. For example, the motor load on an opening roller for separating the fibers can be more or less high. A criterion of the willingness to dissolve the fiber material can be derived from this.
  • Fiber material from a first measurement is set in relation to the sum of the characteristic values of the first with at least one further measurement.
  • the characteristic value thus results from the quotient from the first characteristic value with the sum of the further characteristic values.
  • the sum of the other characteristic values consists of at least two values, which also includes the first characteristic value of the counter. From this newly obtained characteristic value, the change in the characteristic value is determined when the fiber material is processed several times. It can thus be concluded how useful it is to process the fiber material several times in order to improve the fiber material. If necessary, with regard to damage to the fiber material due to multiple processing or loss of fiber material due to the multiple processing, the production engineering processing of the entire material can be weighed up.
  • the change in trash content will usually be exponential. This means that a lot of trash is removed from the fiber material during the first processing, while a correspondingly smaller proportion of trash will be removed during a further processing. The extent to which this change in the trash content results from further processing is demonstrated by the characteristic value of the willingness to clean.
  • the sum of the trash content of the fiber material is set in relation to the willingness to clean (Tges./Rw).
  • the cleaning effort influences the process sequence and the machine settings that have to be selected in order to bring the fiber material to the desired level.
  • Np N1: N total.
  • the nep factor Np describes how easily or how difficult it is to remove nits from the raw material. This parameter influences the process sequence as well as the machine settings. This affects the processing behavior and thus the appearance of the yarn. Here, too, the change in the number of nits can be seen through further processing of the fiber material.
  • Determining the processing behavior (processing) of the fiber material is the sum of the number of nits (N total) of the fiber material in relation to the vulnerability Np (N total / Np).
  • the spinning method used in the testing device corresponds to the spinning method which is used in a later processing of the entire material. This means that when the spinning material is further processed using a rotor spinning method, a rotor spinning device which corresponds as closely as possible to the original spinning device should be present in the testing device. The same applies to the
  • the characteristic values determined in the testing device are generally sufficient to simulate a yarn which, with the corresponding lengths, offers the appearance of a yarn table. This actually generated or the simulated thread table can then be viewed or, for example, displayed on a screen or even printed out with a high-quality printer. Further simulations can be carried out based on the characteristic values. These concern the fabric and knitted fabric simulation.
  • a testing device is equipped with a feed device for a fiber material sample, a fiber separation device and a device for producing a fiber sliver or yarn for testing the fiber values for their characteristic values.
  • Sensor devices are provided at different points in the test device for determining the characteristic values during the processing of the fiber material sample.
  • an evaluation device is provided for the automatic detection of the sensor signals and for the formation of corresponding characteristic values.
  • the determined characteristic values or machine settings can be displayed on a display device, for example a screen or a printer.
  • the tester is used to help the spinner evaluate a fiber material sample.
  • the fiber material sample which runs through the test device from the individual to the later yarn product in the sense of a miniaturized spinning mill, determines characteristic values that allow a quality assessment of the fiber material.
  • the facilities for processing the fiber material sample from the fiber flake or the fiber ribbon to the fiber ribbon or yarn are arranged continuously, and as a result the spinner has no influence on the fiber material as soon as it is in the testing device, it is very reliable, safe and without interference determinable set of characteristic values enables.
  • test devices it can also be advantageous to arrange the devices for processing the sample discontinuously from the fiber flake or the fiber sliver to the fiber sliver or yarn.
  • Sensor devices for similar fiber material examinations are advantageously arranged several times in succession in the test device. In this way, similar tests can be carried out several times, which improves the assessment of the fiber material.
  • the sensor devices for similar fiber material examinations are arranged before and after a processing point of the fiber material sample, the direct influence of the processing point on the fiber material is to be determined.
  • the sensor in front of the processing point measures the original condition of the fiber material, while the sensor after the processing point measures the processing success. By comparing these values, a criterion can be obtained that allows statements to be made about the benefits of such processing. If several similar processing points of the fiber material sample are provided in the test device, a characteristic value must be determined from which it emerges whether multiple processing of the fiber material is advantageous or possibly leads to fiber damage or fiber loss. It is possible, for example, that such processing stations of the same type are two opening rollers which are arranged one behind the other.
  • the Fasermate.rial is combed out twice, which shows whether, for example, the trash content that is removed from the fiber material is significantly higher with double processing than with simple processing.
  • a further sensor is arranged between the two opening rollers, which evaluates the processing result of the first opening roller and a last sensor is provided after the second opening roller, which assesses the overall result of the dissolution of the fiber material.
  • Sensor devices are advantageously provided for determining the load on individual components of the test device. For example, it is possible for the motor load on a dissolving roller to be monitored during the dissolving process of the fiber material sample. If high engine power is required, the dissolution behavior of the fiber material should be assessed rather negatively. A higher fiber damage can be expected. The heating of individual components can also be checked, for example, in order to obtain information about the fiber properties here.
  • the test device for producing a yarn from the fiber material sample contains a spinning device which corresponds to the later processing of the entire material.
  • a spinning device as is also intended for the later processing of the material, very realistic values are obtained, the spinner being provided with characteristic values which are likely to be obtained in the production operation. This allows the spinner to quickly decide, for example, when purchasing the fiber material whether the fiber material will meet its quality requirements. Further advantages of the present invention are described in the following exemplary embodiments. It shows the
  • Figure 1 is a schematic example of a test device
  • Figure 2 is a schematic example of another test device.
  • a fiber material sample 1 is fed over a feed device, which consists of a
  • Feed trough 2 and a feed roller 3 is supplied to an opening roller 4.
  • the fibers in the fiber material sample 1 are dissolved.
  • dirt is removed from the fiber material by means of centrifugal force.
  • the fiber material conveyed by the opening roller 4 is observed by a sensor 7.
  • nits which are in the dissolved fiber material are determined via the sensor 7.
  • the material detached in the dirt discharge opening 5, which essentially consists of dirt particles (trash 6), is examined by means of a sensor 8.
  • the fiber material is conveyed further in the direction of the second opening roller 4 '.
  • the opening roller 4 ' removes the fibers from the opening roller 4 and in turn conveys them past a sensor 7', which determines the number of nits.
  • a further dirt separation opening 5 ' allows the dirt 6 1 still contained in the fiber material to be separated again by centrifugal force.
  • the trash 6 ' is one
  • a further sensor 7 ′′ is arranged in the region of the housing of the opening roller 4 ′.
  • a third value of a number of nits of the fiber material sample 1 is obtained.
  • a dust extraction 9 is provided between the opening rollers 4 and 4 '.
  • the dust which is not transported further with the fibers, is extracted and by means of a sensor 10 measured.
  • the dust extraction 9 could also be designed differently than in the example shown here, as a result of which the separated dust can be differentiated according to whether it is supplied by the first opening roller 4 or by the second opening roller 4 '.
  • the fibers finally enter the spinning rotor 12, in which they are formed into a yarn 13.
  • the yarn 13 is wound onto a bobbin 14.
  • a sensor 15 which checks the yarn properties.
  • sensors of the same type are present multiple times in the test device.
  • sensors 7 to 7 ' each monitor the nit content in the fibers at different stations of the testing device.
  • the difference in measurement results between sensors 7 and 7' can be used to determine the effect on the nits by processing a dissolving roller 4.
  • a comparison between the sensor 7 'and 7 determines the influence of two dissolving processes on the number of nits.
  • a comparison between the measurement results of the sensors 7 ′′ and 7 ′ ′′ yields findings with regard to the nits possibly rotating with the opening roller 4 ′ in comparison to the nits actually entering the fiber feed channel 11. If the measurement results from the sensor 7 are divided by the sum of the measurement results from the sensors 7 to 7 ′ ′′, a characteristic value can be obtained with regard to the dissolution behavior of the fiber material sample 1.
  • the measurement results of the sensors 8 and 8 ' are compared with one another, for example by dividing the measurement result from sensor 8 by the sum of the measurement results from sensor 8 and sensor 8', a characteristic value for the ease of cleaning of the fiber material can be determined. It can be seen from this to what extent a significantly improved cleaning by using two Dissolving operations is obtained. In addition, the characteristic value provides information about the strength of the adhesion of the trash particles to the individual fibers.
  • the dust content of the fiber material sample 1 is examined by the sensor 10 and can be evaluated accordingly.
  • the sensor 15 gives an indication of the quality of a yarn spun with the fiber material sample 1.
  • a rotor spinning device has been shown schematically.
  • a similarly constructed test device can also be provided for a ring spinning or an air spinning device or other spinning processes. It is essential that a fiber material sample is processed and examined several times in the testing device in order to determine a certain behavior of the fiber material. It is most advantageous if the components used correspond to the later spinning device and, if possible, the later spinning preparation devices.
  • the fiber material to be spun into the yarn. It may well be sufficient to determine individual parameters, for example, to produce only one sliver. This is shown in Figure 2. Most of the elements shown correspond to those of the exemplary embodiment in FIG. 1. Only the production of the fiber structure is different. A sliver is produced instead of a yarn. The sliver can already be sufficient for the evaluation of the fiber material. However, the sliver can also be further processed, for example in a spinning device. This creates a discontinuous process.
  • a rotating pot 16 is provided in the manner of a rotor spinning device.
  • the individual fibers are fed to the rotating pot 16 and combine to form a relatively thick sliver.
  • the sliver can be removed continuously from the pot 16, so that a longer piece of sliver is obtained.
  • the pot 16 can be stopped when it is sufficiently filled with fibers. In this case, the sliver then contained therein can be removed and, if necessary, further processed or examined.
  • test device is of course also possible with only one opening roller. Contrary to the exemplary embodiment shown, the process can also be carried out discontinuously in accordance with one aspect of the invention.
  • the fiber material can be passed through the test device several times to determine individual characteristic values and the corresponding values can be determined by the same sensor.
  • the test device determines recommendations from the characteristic values and the recommendations are forwarded to a control unit for the spinning line or machine control.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

L'invention concerne un procédé permettant de vérifier les valeurs caractéristiques d'un matériau fibreux, selon lequel un échantillon de matériau fibreux est acheminé jusqu'à un appareil de contrôle, est isolé, puis est travaillé en un ruban de fibres ou en un fil. L'invention concerne en outre un appareil de contrôle correspondant servant à vérifier le matériau fibreux.
PCT/CH2002/000552 2001-10-05 2002-10-03 Procede et appareil de controle pour verifier les valeurs caracteristiques d'un materiau fibreux WO2003031699A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10149326.6 2001-10-05
DE10149326 2001-10-05
DE10214657A DE10214657A1 (de) 2001-10-05 2002-04-03 Verfahren und Prüfgerät zum Prüfen von Fasermaterial auf dessen Kennwerte
DE10214657.8 2002-04-03

Publications (1)

Publication Number Publication Date
WO2003031699A1 true WO2003031699A1 (fr) 2003-04-17

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PCT/CH2002/000552 WO2003031699A1 (fr) 2001-10-05 2002-10-03 Procede et appareil de controle pour verifier les valeurs caracteristiques d'un materiau fibreux

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007014475A1 (fr) * 2005-07-30 2007-02-08 Uster Technologies Ag Appareil de controle de fil
CN102621290A (zh) * 2012-03-21 2012-08-01 互太(番禺)纺织印染有限公司 一种织物表面毛尘的评估方法及其评估装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686744A (en) * 1982-09-30 1987-08-18 Ppm, Inc. Methods for aeromechanical and electrodynamic release and separation of foreign matter from fiber
US5321496A (en) * 1990-03-14 1994-06-14 Zellweger Uster, Inc. Apparatus for monitoring trash in a fiber sample
EP0604874A2 (fr) * 1992-12-31 1994-07-06 Zellweger Uster, Inc. Contrôle directe des paramètres d'essai ou du rendement de traitement d'une fibre, par application d'un courant de gaz contrôlé et conditioné
US5365640A (en) * 1992-03-06 1994-11-22 Shlomo Sterin Apparatus for sorting fibers
US5469253A (en) * 1990-03-14 1995-11-21 Zellweger Uster, Inc. Apparatus and method for testing multiple characteristics of single textile sample with automatic feed
US5822972A (en) * 1997-06-30 1998-10-20 Zellweger Uster, Inc. Air curtain nep separation and detection

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686744A (en) * 1982-09-30 1987-08-18 Ppm, Inc. Methods for aeromechanical and electrodynamic release and separation of foreign matter from fiber
US5321496A (en) * 1990-03-14 1994-06-14 Zellweger Uster, Inc. Apparatus for monitoring trash in a fiber sample
US5469253A (en) * 1990-03-14 1995-11-21 Zellweger Uster, Inc. Apparatus and method for testing multiple characteristics of single textile sample with automatic feed
US5365640A (en) * 1992-03-06 1994-11-22 Shlomo Sterin Apparatus for sorting fibers
EP0604874A2 (fr) * 1992-12-31 1994-07-06 Zellweger Uster, Inc. Contrôle directe des paramètres d'essai ou du rendement de traitement d'une fibre, par application d'un courant de gaz contrôlé et conditioné
US5822972A (en) * 1997-06-30 1998-10-20 Zellweger Uster, Inc. Air curtain nep separation and detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007014475A1 (fr) * 2005-07-30 2007-02-08 Uster Technologies Ag Appareil de controle de fil
CN102621290A (zh) * 2012-03-21 2012-08-01 互太(番禺)纺织印染有限公司 一种织物表面毛尘的评估方法及其评估装置

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