EP1067224A1 - Procédé et dispositif de surveillance de la qualité des fils - Google Patents

Procédé et dispositif de surveillance de la qualité des fils Download PDF

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Publication number
EP1067224A1
EP1067224A1 EP99113196A EP99113196A EP1067224A1 EP 1067224 A1 EP1067224 A1 EP 1067224A1 EP 99113196 A EP99113196 A EP 99113196A EP 99113196 A EP99113196 A EP 99113196A EP 1067224 A1 EP1067224 A1 EP 1067224A1
Authority
EP
European Patent Office
Prior art keywords
drive
speed
monitoring
current
local
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.)
Granted
Application number
EP99113196A
Other languages
German (de)
English (en)
Other versions
EP1067224B1 (fr
Inventor
Michael Paul Dr. Witzak
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.)
SSM Schaerer Schweiter Mettler AG
Original Assignee
SSM Schaerer Schweiter Mettler 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
Application filed by SSM Schaerer Schweiter Mettler AG filed Critical SSM Schaerer Schweiter Mettler AG
Priority to EP99113196A priority Critical patent/EP1067224B1/fr
Priority to AT99113196T priority patent/ATE258241T1/de
Priority to DE59908371T priority patent/DE59908371D1/de
Publication of EP1067224A1 publication Critical patent/EP1067224A1/fr
Application granted granted Critical
Publication of EP1067224B1 publication Critical patent/EP1067224B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01H13/10—Tension devices
    • D01H13/108—Regulating tension by regulating speed of driving mechanisms of unwinding, paying-out, forwarding, winding or depositing devices, e.g. automatically in response to variations in tension
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams

Definitions

  • the invention is in the field of quality monitoring of yarns, which are so-called Supplying plants are led, such as those in rewinding machines, whirling machines, Texturing machines and stretching machines are used.
  • the drive rollers In these machines there are different numbers of delivery plants or generally drive rollers used that perform various tasks in the thread course. In the case of texturing machines or stretching machines, the drive rollers are heated and are referred to as godets.
  • One of the tasks of the drive rollers is to decouple from Deduction tensions of winding forms from the actual winding tension, with the drive rollers have several, preferably two to ten yarn loops, depending on the type of yarn and the number of loops the slip between the yarn and the surface of the drive roller certainly.
  • the invention relates to a method for quality monitoring of yarns in the yarn path of Drive rollers, each drive roller being driven individually and the drive from a central one Spindle calculator is regulated.
  • each drive roller is local is monitored and regulated based on this local monitoring.
  • a first preferred embodiment of the method according to the invention is characterized in that that the yarn tension is checked during local monitoring.
  • a second preferred embodiment of the method according to the invention is characterized in that that the speed of each drive roller is measured to monitor the thread tension and compared with a target value and that of each drive motor of the drive rollers supplied current is monitored.
  • a third preferred embodiment of the method according to the invention is characterized in that that the instantaneous load of each drive roller is recorded separately, with about the current flowing current to regulate a control error to the current load torque is calculated back.
  • a fourth preferred embodiment of the method according to the invention is characterized in that that the entire chain of signal acquisition and signal transmission from the sensor up to which the computer evaluating the sensor signals is monitored.
  • decentralized or local regulation and Monitoring of the individual delivery plants whereby delivery plant controls are provided are, in addition to the actual engine control, the function of monitoring the Take over the running behavior of the supplying plants.
  • the latter guarantees that every meter of yarn is included monitored tension is processed. Because the thread tension among the most important Belongs to process parameters, this guarantees perfect yarn quality.
  • the invention further relates to a device for performing the above method, with a winding unit and a drive motor controlled by the central spindle computer for every drive roller.
  • each drive roller at least a sensor for the speed of the drive motor and a local computer are assigned is to which the signals of the at least one sensor are fed for processing.
  • a first preferred embodiment of the device according to the invention is characterized in that that a constant on-line regulation of the delay and delivery the individual drive rollers in the thread run certain thread tension ratios.
  • a second preferred embodiment is characterized in that a separate detection the speed and the momentary load of each drive roller takes place.
  • the acquisition is carried out redundantly and is carried out by two mutually controlling Sensors.
  • a third preferred embodiment of the device according to the invention is characterized in that that an internal motor sensor for monitoring the current drawn and a sensor for detecting the speed of each drive motor are provided, and that in the local computers are compared with the signals from the two sensors.
  • Another preferred embodiment of the device according to the invention is characterized in that that the local computers are connected to the central spindle computer, and that based on the monitoring of the speeds and that recorded by the drive motors Electricity monitoring of sensors, electrical connections, computers and drive motors existing signal chain, each error on any Make a detectable fluctuation in the running speed and / or fluctuation in the system effected by a drive motor current.
  • Fig. 1 is an example to explain the function of delivery plants or drive rollers Thread run in an air swirling machine for high and highest production speeds shown.
  • air swirling machines are about an endless elastane thread with one or more filament or staple fiber yarns or customized To combine mixed forms of such yarns.
  • a yarn A drawn off from a template runs over a deflection roller 1 to a first delivery plant L 1 and, depending on the respective process, loops around it with a specific number of loops.
  • the yarn A can be a single filament or staple thread, but several threads can also be put together.
  • the yarn A is led from the first supply plant L 1 to a second supply plant L 2 .
  • a thread B which is usually a special thread, for example an elastane thread, is drawn off from a template (not shown) by a third delivery unit L 3 and fed to the second delivery unit L 2 and picked up there with a number of wraps.
  • the two yarns A and B arrive in a process section 2, in which the air swirl takes place.
  • the yarn created by the air swirling is led via a fourth delivery unit L 4 to a winding unit 3.
  • the number of wraps is process-dependent, that is to say dependent on the yarn, the intermingling quality to be achieved and the process speed.
  • the function of the supplying plants is defined by their position in the thread run.
  • the first delivery unit L 1 together with the deflection roller 1, has the task of eliminating those thread tension fluctuations in the yarn A which arise due to the balloon tension of the template. In addition to these noticeably periodic fluctuations, there is a steady increase in voltage due to the decreasing diameter of the template. Both effects are eliminated by the delivery unit L 1 in connection with the deflection roller 1, so that the yarn A supplied to the delivery unit L 2 is calmed.
  • the yarn can be "drawn". This means that you deliver with the delivery plant L 1 and deliver with the delivery plant L 2 . In relation to the speed of the delivery plant L 4, this means that L 1 is driven somewhat slower and L 2 somewhat faster than L 4 . Thus the yarn A is stretched between L 1 and L 2 and stretched between L 2 and L 4 .
  • the supplying plant L 4 determines the overall elastane warping, the size of which depends on the desired final quality of the yarn; Common elastane distortions are in the range from 1: 1.3 to 1: 4.
  • the delivery units L 1 to L 4 are controlled electronically in synchronism with the speed of the winding unit 3, the regulation being programmed on decentralized control computers (FIG. 2).
  • Fig. 2 shows a schematic representation of the structure of the control and monitoring of the delivery systems of an air swirling machine.
  • four delivery systems L 1 to L 4 are shown, each having a drive motor M 1 to M 4 and a spindle S 1 to S 4 driven by the latter.
  • Each of the delivery plants L 1 to L 4 is assigned a local control computer or processor P 1 to P 4 , to which sensor signals are supplied on the one hand via lines 4 and 5 and which on the other hand outputs a control signal to the motor M 1 to M 4 via a line 6.
  • the processors are connected to a central spindle computer 8 via a bus 7.
  • the elastane distortion is of considerable influence for the quality of the end product produced by process 2. Since the elastane warpage is determined by the speeds and speed ratios of the delivery plants L 1 to L 4 , the quality of the elastane yarn is primarily dependent on the speeds of the delivery plants L 1 to L 4 . These speeds are measured on the one hand via encoders in the motors M 1 to M 4 and fed to the processors P 1 to P 4 via the lines 4. On the other hand, an external speed detection is additionally provided, which is used to monitor the angular accuracy and is supplied to the processors P 1 to P 4 via the lines 5.
  • the motor-internal encoders measure the current supplied to the motors and the actual speed is compared with the target speed in the processors and the flowing current is monitored. In the event of speed deviations, the current is increased accordingly or the braking effect is increased. If the current or the power consumed becomes too high, the motor in question is switched off.
  • the processors continuously evaluate this speed information on-line and thereby monitor the runtime behavior of the supplying plants L 1 to L 4 .
  • the spindle computer 8 supplies the warping and the corresponding target speeds to the individual delivery plants L 1 to L 4 , warping always meaning speed differences of the delivery plants among themselves and relative to the winding unit 3.
  • the spindle computer 8 defines the deviation of the speed of each delivery mechanism from the spindle speed, the thread tension decreasing at a higher speed of a delivery mechanism and increasing at a lower speed.
  • the delivery mechanisms L 1 to L 4 are continuously electronically controlled synchronously with the speed of the winding unit 3, the regulation being programmed on the local control computers P 1 to P 4 . Since each supplier has its own computer and sensors, each supplier can be monitored separately. In addition, the control computers work with redundant information by measuring the number of revolutions on the one hand in the motors M 1 to M 4 and on the other hand externally. Both speed information are continuously evaluated online so that the runtime behavior of the drives is monitored online. All control and monitoring is done digitally.
  • the individual components of the entire device act in this online control of the Thread tension or the tension of the thread mixture in the process (air turbulence, texturing or stretching the yarn) together to guarantee perfect yarn quality. It is important that the signal chain (Fig. 2) is completely monitored and that every meter Yarn is processed under monitored tension conditions. Because the thread tension is one of the most important in these processes in addition to the yarn speed and air pressure Process parameters.
  • the signal chain consists of sensors, electrical connections (cables with contacts), computers and engines. If an error occurs anywhere in the signal chain, so express this is a system error, which is a fluctuation in the speed of the supplying plant in question causes, which is recorded in the associated control computer. Such a system error would be For example, a permanent, non-controllable control deviation due to contact problems (Leakage currents) or a sensor malfunction. This way the entire chain the signal acquisition and transmission from the individual sensor to the spindle computer is monitored.
  • the main property of the described device for quality monitoring is that in addition to the function of the actual engine control, the delivery control systems take over the function of monitoring the running behavior of the delivery plants L 1 to L 4 , and that this running behavior enables clear conclusions to be drawn about a number of potential sources of error .
  • Monitoring of the running behavior of the delivery plants is made possible by the sensors and the decentralized computers. In the event of malfunctions or overloading due to incorrect settings, the process is immediately intervened and the relevant workstation is shut down.
  • the device described can also be used to regulate and monitor the supplying plants also statistical evaluations to determine the frequency of failure and to monitor service life be made.
  • the digital and decentralized control and monitoring enables the parameterization of the individual delivery plants with a central operating computer.
  • the use of the device in air swirling processes leads to high quality and reproducibility, the application in stretching processes leads to a very uniform Guaranteed quality yarn.
  • Fancy yarns are produced,

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
EP99113196A 1999-07-08 1999-07-08 Procédé et dispositif de surveillance de la qualité des fils Expired - Lifetime EP1067224B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99113196A EP1067224B1 (fr) 1999-07-08 1999-07-08 Procédé et dispositif de surveillance de la qualité des fils
AT99113196T ATE258241T1 (de) 1999-07-08 1999-07-08 Verfahren und vorrichtung zur qualitätsüberwachung von garnen
DE59908371T DE59908371D1 (de) 1999-07-08 1999-07-08 Verfahren und Vorrichtung zur Qualitätsüberwachung von Garnen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99113196A EP1067224B1 (fr) 1999-07-08 1999-07-08 Procédé et dispositif de surveillance de la qualité des fils

Publications (2)

Publication Number Publication Date
EP1067224A1 true EP1067224A1 (fr) 2001-01-10
EP1067224B1 EP1067224B1 (fr) 2004-01-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99113196A Expired - Lifetime EP1067224B1 (fr) 1999-07-08 1999-07-08 Procédé et dispositif de surveillance de la qualité des fils

Country Status (3)

Country Link
EP (1) EP1067224B1 (fr)
AT (1) ATE258241T1 (fr)
DE (1) DE59908371D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006094931A1 (fr) * 2005-03-03 2006-09-14 Angeloni, Germano Dispositif permettant de commander l’association de deux fils ou plus dans des machines textiles
WO2017080899A1 (fr) * 2015-11-11 2017-05-18 Oerlikon Textile Gmbh & Co. Kg Procédé de contrôle de la qualité lors de la texturation et dispositif de texturation
ES2784920A1 (es) * 2020-02-10 2020-10-02 Twistperfect S L Maquina y proceso de desenrollado y enrollado de hilo a una velocidad superior a 1m/s
CN114481399A (zh) * 2020-10-24 2022-05-13 欧瑞康纺织有限及两合公司 导丝盘转速控制方法和引导、定向和/或松弛纱线的装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300703A1 (de) * 1983-01-11 1984-07-12 Siemens AG, 1000 Berlin und 8000 München Verfahren zur zugkraftregelung bei langgestrecktem gut
EP0466049A1 (fr) * 1990-07-13 1992-01-15 Maschinenfabrik Rieter Ag Entraînement pour un système d'étirage
WO1992022691A1 (fr) * 1991-06-10 1992-12-23 Grossenhainer Textilmaschinenbau Gmbh Banc d'etirage ou similaire
DE4424619A1 (de) * 1993-07-28 1995-02-02 Barmag Spinnzwirn Gmbh Verfahren zur Regelung einer Aufwickelgeschwindigkeit von fadenförmigem Gut

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300703A1 (de) * 1983-01-11 1984-07-12 Siemens AG, 1000 Berlin und 8000 München Verfahren zur zugkraftregelung bei langgestrecktem gut
EP0466049A1 (fr) * 1990-07-13 1992-01-15 Maschinenfabrik Rieter Ag Entraînement pour un système d'étirage
WO1992022691A1 (fr) * 1991-06-10 1992-12-23 Grossenhainer Textilmaschinenbau Gmbh Banc d'etirage ou similaire
DE4424619A1 (de) * 1993-07-28 1995-02-02 Barmag Spinnzwirn Gmbh Verfahren zur Regelung einer Aufwickelgeschwindigkeit von fadenförmigem Gut

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006094931A1 (fr) * 2005-03-03 2006-09-14 Angeloni, Germano Dispositif permettant de commander l’association de deux fils ou plus dans des machines textiles
WO2017080899A1 (fr) * 2015-11-11 2017-05-18 Oerlikon Textile Gmbh & Co. Kg Procédé de contrôle de la qualité lors de la texturation et dispositif de texturation
CN108350616A (zh) * 2015-11-11 2018-07-31 欧瑞康纺织有限及两合公司 用于监控在织造期间的质量的方法以及织造装置
CN108350616B (zh) * 2015-11-11 2021-08-06 欧瑞康纺织有限及两合公司 用于监控在变形期间的质量的方法以及变形装置
ES2784920A1 (es) * 2020-02-10 2020-10-02 Twistperfect S L Maquina y proceso de desenrollado y enrollado de hilo a una velocidad superior a 1m/s
WO2021160913A1 (fr) * 2020-02-10 2021-08-19 Twistperfect, S.L. Machine et procédé de déroulement et d'enroulement de fil à une vitesse supérieure à 1m/s
CN114481399A (zh) * 2020-10-24 2022-05-13 欧瑞康纺织有限及两合公司 导丝盘转速控制方法和引导、定向和/或松弛纱线的装置
CN114481399B (zh) * 2020-10-24 2023-08-08 欧瑞康纺织有限及两合公司 导丝盘转速控制方法和引导、定向和/或松弛纱线的装置

Also Published As

Publication number Publication date
ATE258241T1 (de) 2004-02-15
DE59908371D1 (de) 2004-02-26
EP1067224B1 (fr) 2004-01-21

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