EP1574607B1 - Verfahren zur Überwachung der Garnqualität in einer Spinnmaschine - Google Patents

Verfahren zur Überwachung der Garnqualität in einer Spinnmaschine Download PDF

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Publication number
EP1574607B1
EP1574607B1 EP20050004108 EP05004108A EP1574607B1 EP 1574607 B1 EP1574607 B1 EP 1574607B1 EP 20050004108 EP20050004108 EP 20050004108 EP 05004108 A EP05004108 A EP 05004108A EP 1574607 B1 EP1574607 B1 EP 1574607B1
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EP
European Patent Office
Prior art keywords
fiber bundle
quality
spinning machine
yarn
machine
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP20050004108
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English (en)
French (fr)
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EP1574607A2 (de
EP1574607A3 (de
Inventor
Yutaka Shinozaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
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Toyota Industries Corp
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Publication date
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Publication of EP1574607A3 publication Critical patent/EP1574607A3/de
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Publication of EP1574607B1 publication Critical patent/EP1574607B1/de
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    • 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
    • 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

Definitions

  • the present invention relates to a quality control method for a fiber bundle such as yarn or sliver spun in a spinning machine.
  • the above known arts disclosed in the above Publications are all directed so that a detection device for yarn is provided with the spinning machine, quality of yarn is monitored and then controlled through data obtained from the detection signal.
  • a reference value for judging whether the obtained data is non-defective or defective is an experiential value or experimental value.
  • the yarn detection devices are not consistent, and a yarn detection device at one spindle of the spinning machine is different from the aforementioned standard inspection machine in measurement point and sensitivity of a detector. Therefore, it is difficult to obtain such detection accuracy as the standard inspection machine.
  • yarn quality data measured by the yarn detection device on the spinning machine may not be the equivalent data to that obtained by the standard inspection machine and is not reliable.
  • yarn detection device employed for yarn quality control. Normally, it is an actual situation of the quality control that requires the sample yarn to be set in the standard inspection machine, as described above.
  • the present invention is directed to provide a quality control method for a fiber bundle, whereby substantially an equivalent result to that obtained by a standard inspection machine is obtained through a quality data obtained by measuring a traveling fiber bundle after being spun in a spinning machine.
  • a quality control method for a fiber bundle spun in a spinning machine including the steps of: detecting the spun fiber bundle by installing a quality measurement and processing unit for the fiber bundle in the spinning machine, and storing a data on quality of the fiber bundle obtained from a detection signal; inspecting the quality of the fiber bundle with a standard inspection machine in an inspection room; setting the data on the quality of the fiber bundle in the quality measurement and processing unit at a period of time while the fiber bundle, which is judged to be non-defective by the standard inspection machine, is spun as a reference value for judging the quality of the fiber bundle spun in the spinning machine; and judging the quality of the spun fiber bundle during operation of the spinning machine based on the reference value.
  • FIG. 1 is a schematic view showing a part of a ring spinning machine.
  • the ring spinning machine includes a bobbin 3a which is connected to a drive source (not shown) for rotation, and a ring rail 2 which rises and falls relative to the bobbin 3a for forming a cop 3 provided by a yarn 4 which is delivered from a drafting portion (not shown).
  • the delivered yarn 4 is passed through a snail wire 5 and then wound around the bobbin 3a one after another though a traveler 6 with forming a ballooning shape.
  • a quality measurement and processing unit 1 for the yarn 4 will now be described with reference to FIG. 1 .
  • a projector 7 and an optical receiver 8 sandwich a path of the yarn 4 which travels from the drafting portion to the snail wire 5.
  • the projector 7 and the optical receiver 8 form an optical yarn detector.
  • the optical receiver 8 is connected to an arithmetic-logic unit 11 through an amplifier 9 and an A/D converter 10.
  • the arithmetic-logic unit 11 is connected to a read-only memory 12 and a random-access memory 13.
  • the read-only memory 12 stores a publicly known program for computing a data, which reflects a quality item such as yarn unevenness or yarn fuzz, based on a receiving signal of the optical receiver 8.
  • the random-access memory 13 stores a measurement data obtained by the optical receiver 8, a computed yarn quality item data, and a reference value and a control limit value (Refer to the following section for detail).
  • the arithmetic-logic unit 11 is further connected to an indicator 14 which indicates the foregoing various datum and an input device 15 into which an operator is capable of entering a necessary data.
  • the amount of light received by the optical receiver 8 is varied by the factor such as the thickness of the yarn 4 or quantity of fuzz thereof.
  • the receiving signal of the optical receiver 8 is amplified by the amplifier 9, and converted into a digital signal by the A/D converter 10, and thereafter transmitted to the arithmetic-logic unit 11.
  • the arithmetic-logic unit 11 stores the digital signal as it is or in its processed state, as a measurement data which reflects a state of the yarn 4 in real time, in the random-access memory 13.
  • the arithmetic-logic unit 11 also computes the quality item data, which reflects generation of the yarn unevenness or the yarn fuzz, from the measurement data with the arithmetic program which is read out from the read-only memory 12, and stores the quality item data in the random-access memory 13.
  • the data for the yarn unevenness in the present embodiment is represented by U % which reflects the dispersion of the yarn thickness
  • the data for the yarn fuzz in the present embodiment is represented by the number of fibers which protrudes from the yarn per unit length.
  • the indicator 14 indicates the measurement data in real time, and also reads out and indicates the computed data for the yarn unevenness and the yarn fuzz.
  • the reference value, the control limit value and another necessary data are entered into the input device 15 in which comparative evaluation of the measurement data and the quality item data is performed.
  • the bobbin 3a is first set on a spindle (not shown) by a publicly known method. As a spinning operation of the ring spinning machine is started, the yarn 4 drafted by the drafting portion is delivered therefrom, and passed through the snail wire 5 and then wound around the bobbin 3a one after another though the traveler 6 with forming the ballooning shape. Meanwhile, the operator adjusts the operation of the ring spinning machine for obtaining a prescribed yarn quality.
  • the optical yarn detector is operated, so that the projected light from the projector 7 is received by the optical receiver 8 while being partially blocked off by the traveling yarn 4.
  • This received light is amplified by the amplifier 9, and then converted into the digital signal by the A/D converter 10, and thereafter transmitted to the arithmetic-logic unit 11 as described above.
  • the arithmetic-logic unit 11 stores the measurement data and the yarn quality item data in the random-access memory 13 based on the yarn detection signal transmitted in real time, every predetermined spinning period one after another.
  • the ring spinning machine is stopped for replacing the fully wound cop 3.
  • the fully wound cop 3 is replaced one after another, and a plurality of cops 3 is taken as samples.
  • the sample cops 3 are carried into an inspection room in which a standard inspection machine (not shown) is installed for quality inspection.
  • a standard inspection machine (not shown) is installed for quality inspection.
  • an inspector inspects the quality of the sample cops 3 for obtaining various datum on the factor such as the yarn unevenness or the yarn fuzz with the standard inspection machine by a publicly known method. These inspection datum are used in print if needed. Also, the inspector judges the quality of each of the sample cops 3 based on the above inspection datum.
  • the operator reads out the measurement data at the period of time while the inspected yarn in the sample cop 3 is spun, and the quality item data, such as the yarn unevenness or the yarn fuzz, calculated from the measurement data, from the random-access memory 13 through the input device 15, and stores those datum as a reference value in the random-access memory 13. Also, the operator inputs the control limit value relative to the reference value, based on a statistical value about dispersion of the yarn quality item data, or a predetermined rate, to the input device 15 for storing it in the random-access memory 13.
  • the operator starts spinning operation of the ring spinning machine after setting the forgoing reference value and the control limit value.
  • the ring spinning machine continuously receives the digital signal from the optical receiver 8 of the optical yarn detector during the spinning operation.
  • the arithmetic-logic unit 11 stores the measurement data based on the digital signal and the yarn quality item data computed from the measurement data in the random-access memory 13 while monitoring generation of quality abnormality of spun yarn in real time by comparing those datum with the set reference value or control limit value.
  • the indicator 14 or another display unit indicates abnormal signal for warning the operator about the generation of quality abnormality, thereby enabling the operator to take a necessary action with regard to the target ring spinning machine.
  • the operator operates the input device 15 so that the indicator 14 indicates change of the yarn quality item data for the cop 3 while the cop 3 is spun, thereby enabling the operator to check the yarn state at an optional time. Also, in the case where the sample cop 3 is judged to be defective by inspection of the standard inspection machine, the spinning operation of the ring spinning machine is re-adjusted. Thereafter, a cop obtained by the re-adjusted operation is inspected by the standard inspection machine as aforementioned.
  • the first preferred embodiment of the present invention has the following effects.
  • the data acquisition about the quality of the yarn at the time of spinning of the spinning machine may be performed by each spindle or an average value of each spindle.
  • the arithmetic-logic unit, the indicator and the input device may be shared with a controller of the ring spinning machine.
  • the method of judging whether the yarn quality is abnormal or not in the quality measurement and processing unit is not limited to a level wherein whether the quality item data exceeds the reference value (or the control limit value) or not is judged as described in the above embodiments, but may be judged by a magnitude of the value obtained by differentiating the data with respect to time.
  • the yarn quality in the quality measurement and processing unit is judged to be abnormal due to the change of roving set in the ring spinning machine or the change of the yarn quality data measured by the quality measurement and processing unit by abrasion of a traveler or other parts
  • the cop spun at the time is inspected by the standard inspection machine and the inspection result is judged to be non-defective, the data which is stored in the quality measurement and processing unit at the time when the cop is spun is reset as a renewed reference value.
  • this method lowers a control level of the yarn quality, even in the control level the quality of the spun yarn passes the inspection of the standard inspection machine. This means that kinds of yarn which is used in the ring spinning machine with the same level of the quality control are increased.
  • a detection device for yarn used in the quality measurement and processing unit may employ a capacitance detector which is capable of detecting yarn unevenness.
  • the length of the yarn set in the standard inspection machine is not limited to a unit of cop as described in the first and second embodiments, but may be a unit of a divided bundle.
  • the reference value about the yarn unevenness may be set by a histogram, besides U % which reflects the dispersion of the yarn thickness.
  • a yarn count may be combined with the U % reflecting the dispersion, or the histogram.
  • the reference value about the fuzz may be set by the number of the fuzzes, the length of the fuzz and the number of the fuzzes, or the total length of the fuzzes.
  • the reference value about the fuzz may also be set by the histogram of these values.
  • the inspection result from the standard inspection machine is transmitted to the quality measurement and processing unit of the ring spinning machine via communication.
  • the operator may input the reference value and the control limit value to the quality measurement and processing unit by hand after checking the inspection result on the indicator of the quality measurement and processing unit.
  • the present invention is not only embodied to the ring spinning machine as exemplified in the first and second embodiments, but may be implemented to the spinning machine such as a ring twister, an open-end spinning machine, a bundling spinning machine, a winder, a roving machine, or a drawing machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)

Claims (6)

  1. Qualitätssteuerverfahren für ein Faserspinnbündel in einer Spinnmaschine, welche eine Vielzahl von Wicklungsabschnitten aufweist, die das Faserspinnbündel um eine Garnrolle wickeln,
    Erfassen des Faserspinnbündels durch Installieren einer Qualitätsmessungs- und Verarbeitungseinheit für das Faserspinnbündel in der Spinnmaschine, und Speichern der Daten über die Qualität des Faserbündels, die aus einem Erfassungssignal erhalten werden;
    Überprüfen der Qualität des Faserbündels mit einer Standardüberprüfungsmaschine in einem Überprüfungsraum;
    gekennzeichnet durch
    Festlegen der Daten über die Qualität des Faserbündels in der Qualitätsmessungs- und Verarbeitungseinheit in einer Zeitspanne, während das Faserbündel, welches durch die Standardüberprüfungsmaschine als nicht fehlerhaft beurteilt wird, als ein Referenzwert für die Beurteilung der Qualität des Faserbündelpinnens in der Spinnmaschine gesponnen wird; und
    Beurteilen der Qualität des gesponnenen Faserbündels während des Betriebs der Spinnmaschine, basierend auf dem Referenzwert.
  2. Verfahren nach Anspruch 1, ferner umfassend den Schritt des Festsetzens eines Steuergrenzwerts der Spinnmaschine relativ zu dem Referenzwert, durch einen statistischen Wert oder eine vorbestimmte Rate über die Qualität des Faserbündels.
  3. Verfahren nach Anspruch 1 oder 2, ferner umfassend die Schritte:
    Versehen der Qualitätsmessungs- und Verarbeitungseinheit der Spinnmaschine mit einem ersten Steuermittel, umfassend ein erstes Kommunikationsmittel;
    Versehen der Standardüberprüfungsmaschine mit einem zweiten Steuermittel umfassend ein zweites Kommunikationsmittel, während des Installierens der Standardüberprüfungsmaschine in dem Überprüfungsraum;
    Übermitteln eines Überprüfungsergebnisses des Faserbündels, das durch die Standardüberprüfungsmaschine überprüft wird, von dem zweiten Steuermittel der Standardüberprüfungsmaschine an das erste Steuermittel der Spinnmaschine mittels einer Kommmunikation; und
    Festsetzen des Referenzwerts in der Qualitätsmessungs- und Verarbeitungseinheit durch das erste Steuermittel der Spinnmaschine basierend auf einem Signal des Überprüfungsergebnisses des Faserbündels, welches als nicht fehlerhaft beurteilt wurde.
  4. Verfahren nach Anspruch 1 oder 2, ferner umfassend die Schritte:
    Versehen der Qualitätsmessungs- und Verarbeitungseinheit der Spinnmaschine mit einem ersten Steuermittel umfassend ein erstes Kommunikationsmittel;
    Versehen der Standardüberprüfungsmaschine mit einem zweiten Steuermittel umfassend ein zweites Kommunikationsmittel, während des Installierens der Standardüberprüfungsmaschine in dem Überprüfungsraum;
    Übermitteln eines Überprüfungsergebnisses des Faserbündels, das durch die Standardüberprüfungsmaschine überprüft wird, von dem zweiten Steuermittel der Standardüberprüfungsmaschine an das erste Steuermittel der Spinnmaschine mittels einer Kommmunikation; und
    Festsetzen des Referenzwerts und des Steuergrenzwerts in der Qualitätsmessungs- und Verarbeitungseinheit durch das erste Steuermittel der Spinnmaschine basierend auf einem Signal des Überprüfungsergebnisses des Faserbündels, welches als nicht fehlerhaft beurteilt wurde.
  5. Verfahren nach einem der Ansprüche 1 bis 4, bei dem die Daten über die Qualität des Faserbündels, die durch die Qualitätsmessungs- und Verarbeitungseinheit erhalten werden, Echtzeitmessdaten aufweisen, die aus dem Erfassungssignal eines Detektors erhalten werden, der das Faserbündel erfasst, das zu der Garnrolle des Wicklungsabschnitts läuft, und Qualitätseinheitsdaten des Faserbündels aufweisen, die aus den Messdaten berechnet werden.
  6. Verfahren nach Anspruch 5, bei dem eine Qualitätseinheit des Faserbündels zumindest eine Faserbündelungleichheit aufweist.
EP20050004108 2004-03-01 2005-02-25 Verfahren zur Überwachung der Garnqualität in einer Spinnmaschine Not-in-force EP1574607B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004055793A JP4049107B2 (ja) 2004-03-01 2004-03-01 紡績機における繊維束の品質管理方法
JP2004055793 2004-03-01

Publications (3)

Publication Number Publication Date
EP1574607A2 EP1574607A2 (de) 2005-09-14
EP1574607A3 EP1574607A3 (de) 2006-05-24
EP1574607B1 true EP1574607B1 (de) 2010-10-06

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EP20050004108 Not-in-force EP1574607B1 (de) 2004-03-01 2005-02-25 Verfahren zur Überwachung der Garnqualität in einer Spinnmaschine

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EP (1) EP1574607B1 (de)
JP (1) JP4049107B2 (de)
CN (1) CN100385052C (de)
DE (1) DE602005023922D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020188452A1 (en) 2019-03-15 2020-09-24 Invista Textiles (U.K.) Limited Yarn quality control

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CN101398435B (zh) * 2007-09-29 2013-08-28 深圳市比克电池有限公司 一种卷绕机卷绕材料品质的监测方法
JP5413560B2 (ja) * 2008-09-25 2014-02-12 村田機械株式会社 異物検出装置、繊維機械及び異物検出方法
CN102507590A (zh) * 2011-10-14 2012-06-20 李军生 用于检测棉纱的多功能综合测控仪
JP5796558B2 (ja) * 2012-09-05 2015-10-21 株式会社豊田自動織機 紡機の糸検出装置
CN102944562A (zh) * 2012-11-21 2013-02-27 吴江征明纺织有限公司 一种断丝警示器
CN104101697A (zh) * 2013-04-10 2014-10-15 苏州华觉智能科技有限公司 检测装置
CZ304447B6 (cs) * 2013-08-02 2014-05-07 Vysoké Učení Technické V Brně Zařízení ke kontrole extrudovaného vlákna
CN107815761A (zh) * 2016-09-13 2018-03-20 第伊沃尔维克斯私人有限公司 用于加工连续条状纺织材料的机器的测量系统
CN107817335A (zh) * 2016-09-13 2018-03-20 普瑞米尔伊沃维克斯私人有限公司 在纺织单元进行在线监测和离线测试的集成系统和方法
JP2018066084A (ja) * 2016-10-19 2018-04-26 村田機械株式会社 紡績機械管理システム及び管理方法
CN110546113B (zh) * 2017-06-06 2022-05-17 日本电气硝子株式会社 玻璃纤维原丝的制造方法
CN107561122A (zh) * 2017-08-31 2018-01-09 盐城工学院 一种条干均匀度测试方法
CN110271915A (zh) * 2019-07-30 2019-09-24 安徽华茂纺织股份有限公司 自动络筒机工艺参数验证方法
CN111411429A (zh) * 2020-04-01 2020-07-14 东华大学 一种四罗拉环锭细纱机的须条检测装置

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JPS61132644A (ja) * 1984-11-27 1986-06-20 Murata Mach Ltd 紡績機における糸品質管理方法
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Publication number Priority date Publication date Assignee Title
WO2020188452A1 (en) 2019-03-15 2020-09-24 Invista Textiles (U.K.) Limited Yarn quality control

Also Published As

Publication number Publication date
CN1664193A (zh) 2005-09-07
JP2005248333A (ja) 2005-09-15
JP4049107B2 (ja) 2008-02-20
DE602005023922D1 (de) 2010-11-18
EP1574607A2 (de) 2005-09-14
CN100385052C (zh) 2008-04-30
EP1574607A3 (de) 2006-05-24

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