EP1520827B1 - Procédé et dispositif pour la régulation de la tension du fil dans une machine textile et l'utilisation du procédé - Google Patents

Procédé et dispositif pour la régulation de la tension du fil dans une machine textile et l'utilisation du procédé Download PDF

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Publication number
EP1520827B1
EP1520827B1 EP03022333A EP03022333A EP1520827B1 EP 1520827 B1 EP1520827 B1 EP 1520827B1 EP 03022333 A EP03022333 A EP 03022333A EP 03022333 A EP03022333 A EP 03022333A EP 1520827 B1 EP1520827 B1 EP 1520827B1
Authority
EP
European Patent Office
Prior art keywords
thread
tension
guide
yarn
thread tension
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.)
Expired - Lifetime
Application number
EP03022333A
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German (de)
English (en)
Other versions
EP1520827A1 (fr
Inventor
Franz Böni
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 EP03022333A priority Critical patent/EP1520827B1/fr
Priority to AT03022333T priority patent/ATE345303T1/de
Priority to DE50305700T priority patent/DE50305700D1/de
Publication of EP1520827A1 publication Critical patent/EP1520827A1/fr
Application granted granted Critical
Publication of EP1520827B1 publication Critical patent/EP1520827B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/005—Means compensating the yarn tension in relation with its moving due to traversing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/31—Tensile forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for controlling the thread tension on a textile machine, on which the thread is withdrawn by a thread supply from a supply and fed to a yarn guide having thread laying, wherein a controlled variable for the delivery speed of the thread is obtained.
  • 24 034 are provided in a thread-consuming machine, in particular a circular knitting machine having a plurality of thread-processing sites, correspondingly many delivery facilities for the thread-like material.
  • a thread tensioning device which cooperates with the thread-like material and contains a sensor and a measuring circuit.
  • the apparatus for controlling yarn feeding on a textile machine such as a knitting, kneading or winding machine described in EP-A-0 950 742 includes a thread tension measuring sensor, a yarn feeding speed measuring means and a precise setting control these two parameters, wherein preferably the yarn delivery speed is controlled by the thread tension.
  • a similar device is described in EP-A-0 875 479 by Shurer Schweiter Mettler AG.
  • EP-A-1 318 097 a method of the type mentioned in the beginning is described in which a distinction is made between the disturbances causing the fluctuations of the thread tension after periodic and stochastic disturbances, and the periodic disturbances calculated and taken into account for the said controlled variable.
  • the stochastic disturbances are the disturbances caused by the withdrawal of the thread
  • the periodic disturbances which are considerably larger than the stochastic ones, are the disturbances caused by the laying of the thread. Since the latter are geometric, they can be calculated.
  • this known method for controlling the thread tension on a textile machine should now be improved so that the quality of the compensation of the periodic thread tension fluctuations further improved and thereby the tolerance range of the thread tension in the product produced becomes narrower.
  • This object is achieved according to the invention in a method of the type mentioned in that the thread tension is measured by the position of the thread guide dependent and measured fluctuations in the thread tension for said controlled variable are taken into account, with a current synchronization between the position of the thread guide and the Control of the thread delivery takes place and thus a position-dependent measurement of the thread tension is obtained, and that an averaging of the measured values of the thread tension for the individual positions takes place over a number of laying cycles.
  • a first preferred embodiment of the method according to the invention is characterized in that the measurement of the thread tension at fixed positions takes place n times through a stroke of the thread guide, and that the measured values for each position are determined and averaged over m laying cycles.
  • the position-dependent determination of the thread tension and the associated synchronization of the delivery speed of the thread is independent of the stroke and the speed of the thread guide. This independence allows the compensation of periodic fluctuations in the thread tension even at start and stop ramps and at low production speeds.
  • a second preferred embodiment of the method according to the invention is characterized in that disturbances of the thread tension due to the deviation of the current position-dependent measured value from the value averaged over m cycles are recognized.
  • the position-dependent measured value of the thread tension is used as basic controlled variable, which is superimposed on the reversal points of the thread guide a correction value for a short-term braking of the delivery mechanism.
  • a fourth preferred embodiment is characterized in that, on the basis of the position-dependent measured value of the thread tension, an adaptive adaptation of the delivery speed takes place in which the delivery speed is increased or reduced as a function of the respective position of the thread guide.
  • the invention further relates to a device for controlling the thread tension on a textile machine, with a motor-driven delivery mechanism for the thread and a thread laying with a thread guide for winding the thread on a yarn carrier, wherein the drive of the delivery mechanism is controlled so that a balance of the thread laying conditional disturbances of the thread tension occurs.
  • the device according to the invention is characterized by a sensor for measuring the thread tension and by an evaluation stage for the sensor signals, in which an assignment of the measured values of the sensor to the respective position of the thread guide and an averaging of the measured values of the thread tension for the individual positions takes place over a number of laying cycles , and means for a continuous synchronization between the position of the thread guide and the control of the thread delivery.
  • a first preferred embodiment of the device according to the invention is characterized in that the determination of said controlled variable takes place taking into account the instantaneous yarn speed.
  • a second preferred embodiment is characterized in that a first control stage for the drive of the yarn carrier and the thread laying and associated with this second control stage for driving the delivery mechanism are provided, one of which contains said evaluation stage, and that between the two Control stages a continuous transmission and synchronization of the position of the thread guide takes place.
  • a further preferred embodiment of the device according to the invention is characterized in that the thread guide performs a reciprocating traversing movement, and that the drive of the delivery mechanism is regulated so that at the reversing positions of the thread guide to reduce the downtime of the thread guide serving reducing the yarn delivery speed ,
  • the invention further relates to an application of said method on winding machines, aircovering machines or texturing machines.
  • the winding station shown in Fig. 1 consists of a Aufsteckung 1 for receiving a feed bobbin 2 with a thread F, a thread insulation 3, a driven by a motor 4 delivery 5, a sensor 6 for measuring the tension of the thread F and a winding unit.
  • the latter consists of a by a motor (not shown) drivable spindle 8 for receiving and holding a bobbin 9, on which a coil 10 is wound, and a thread laying 11.
  • the drive of the coil 10 via a motor-driven friction roller on which the coil 10 rests (see EP-A-1 125 878).
  • the thread laying 11 contains, as the most essential element, a yarn guide 12, which performs an oscillating traversing movement along the axis of the spool 10.
  • a yarn guide 12 which performs an oscillating traversing movement along the axis of the spool 10.
  • an oscillating traversing exporting thread guide 12 may also be provided a so-called wing thread laying of the type described in EP-A-0 997 422.
  • a wing-thread laying has two counter-rotatable, superposed yarn guide wings and a bow disk. The yarn guide wings emerge from the contour of the sheet disk and dive back into it, wherein at the immersion points of the yarn guide wings in each case the transfer of the thread takes place.
  • the yarn guide 12 is mounted on a sliding in a rail or groove-like guide back and forth slide 13, on which a traversing element 14 engages.
  • This is designed as a flexible and traversing stiff element for transmitting tensile forces and, for example, by a string, a wire, a metal cable, a flat, toothed or V-belt, a metal band, a chain or the like. Formed.
  • the traversing element 14 passes over two rollers 15 and 16, one of which, according to the roller 16, serves as a drive wheel for driving the traversing element 14.
  • the drive wheel 16 is driven by a servomotor (not shown), preferably a stepping motor.
  • the drive wheel 16 is mounted directly on the motor shaft.
  • the motor is a sensor (not shown) for detecting the rotational position of the drive wheel 16 and thus associated with the traversing position of the yarn guide 12.
  • the sensor is a consisting of a transmitting and a receiving diode photoelectric sensor, the Movement of the drive wheel 16 or scanned with this rigidly connected disc.
  • the drive wheel 16 or the disc is provided for this purpose with suitable optically scannable markers, for example, arranged along a circle holes or slots.
  • the drive motors of the spindle 8 and the drive wheel 16, the sensor for the traversing position of the yarn guide 12 and any other sensors, such as the speed of the coil 10 are connected to a spindle control 17, which said motors based on programmed winding parameters and winding laws and the controls data supplied by the sensors.
  • the spindle control 17 is also connected to a delivery control 18, which in turn is connected to the yarn tension sensor 6 and to the drive motor 4 of the delivery mechanism 5.
  • the thread tension sensor 6 measures the fluctuations of the thread tension at fixed positions n times by one stroke. These measured values are determined over m laying cycles and averaged. The values thus obtained thus show an image of the thread shortening or thread extension before the thread laying 11 and form the precontrol value for the controlled variable of the thread delivery.
  • Important for the position-dependent determination of the thread tension is the information at which position the thread guide 12 is at a certain time. This information is continuously exchanged with high priority between the spindle controller 17 and the delivery controller 18 and there is a synchronization of the time base.
  • Periodic thread fluctuations are disturbances caused by the thread laying 11.
  • a look at the geometry of the thread laying shows that because of the linear movement of the thread guide 12, the length of the thread F between this and the thread tension sensor 6 at the reversal points of the traversing movement is greater than in the middle.
  • the geometry of the thread laying 11, which is known, is used to brake the yarn delivery 5 at the reversal points of the yarn guide 12 briefly. At these reversal points is a significant, but dependent on the Bewicklungsin throttling of the motor 4 to compensate for the downtime of the yarn guide 12 at the reversal points.
  • the diagram of Fig. 2 shows the control loop for the described control of the thread tension:
  • the upper left recognizes the spindle control 17 specifiable parameter 19, which is the Verlegungsgeometrie and Aufwickelgeometrie, including the delivery control 18 predetermined target value 20 of the thread tension.
  • the latter is linked to the parameters 19 via an adder 21 and a transfer function 22.
  • the adder 21 is also supplied with the actual value of the thread tension measured and processed by the thread tension sensor 6.
  • Transfer function 22 denotes the mathematical relationship between input and output signal, taking into account a time delay. In other words, upon a change in the input of transfer function 22, its output will characteristically respond with a new value.
  • the combination of the output of the transfer function 22 with the parameters 19 reaches the controlled system 23, which is the element to be influenced or the part of the control loop to be regulated.
  • the controlled system 23 is the element to be influenced or the part of the control loop to be regulated.
  • these are the thread F and the properties of the elements which the thread F touches on its way.
  • Such properties are, for example, the surface of the drive roller (delivery mechanism 5) and the surfaces of all deflection points.
  • the material parameters 24 of the thread F are essential for the scheme. They are listed as a separate box because other rule settings can be used, depending on the material.
  • the output of the stage 24 is the actual value of the yarn tension / thread tension.
  • the thread tension is measured n times at fixed positions (angle synchronous) and averaged by the controller in a step 25 over m scans.
  • the thread tension thus represents the position-dependent actual value of the variable to be controlled.
  • the control algorithm 26 is, for example, a PD controller, PID controller or 3-point controller. Faults in the thread tension are recognized as such because their current value deviates from the value averaged over m periods.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (10)

  1. Procédé de régulation de la tension du fil sur une machine textile, sur laquelle le fil (F) est dévidé d'une réserve (12) par un dispositif (5) de fourniture du fil et est envoyé à un dispositif (11) de pose du fil ayant un guide-fil (12), une grandeur de régulation de la vitesse de livraison du fil (F) étant obtenue, caractérisé en ce que l'on mesure la tension du fil en fonction de la position du guide-fil et l'on tient compte des fluctuations ainsi mesurées de la tension du fil pour ladite grandeur de réglage, une synchronisation continue entre la position du guide-fil (12) et la commande (18) du dispositif (5) de livraison du fil étant effectuée et une valeur de mesure de la tension du fil en fonction de la position étant ainsi obtenue et en ce que l'on effectue une moyenne des valeurs de mesure de la tension du fil pour les diverses positions sur un certain nombre de cycles de pose.
  2. Procédé suivant la revendication 1, caractérisé en ce que l'on effectue la mesure de la tension du fil en des positions fixes n fois sur une course du guide-fil (12) et en ce que l'on détermine les valeurs de mesure pour chaque position sur n cycles de pose et on en fait la moyenne.
  3. Procédé suivant la revendication 2, caractérisé en ce que l'on détecte des perturbations de la tension du fil en raison de l'écart entre la valeur de mesure instantanée en fonction de la position et la valeur dont on a fait la moyenne sur n cycles.
  4. Procédé suivant la revendication 3, caractérisé en ce que l'on utilise la valeur de mesure de la tension du fil en fonction de la position comme grandeur de réglage de base à laquelle est superposée aux points de rebroussement du guide-fil (12) une valeur de correction pour un freinage à bref délai du dispositif (5) de livraison.
  5. Procédé suivant l'une des revendications 1 à 4, caractérisé en ce que l'on effectue au moyen de la valeur de mesure de la tension du fil en fonction de la position une adaptation adaptive de la vitesse de livraison pour laquelle on augmente ou on réduit la vitesse de livraison en fonction de la position respective du guide-fil (12).
  6. Installation de régulation de la tension du fil sur une machine textile comprenant un dispositif (5) motorisé de livraison du fil (F) et un dispositif (11) de pose du fil ayant un guide-fil (12) pour bobiner le fil (F) sur un porte-fil (9), l'entraînement du dispositif (5) de livraison étant réglé de façon à effectuer une compensation des perturbations de la tension du fil provoquées par le disposition (11) de pose du fil, caractérisée par un capteur (6) de mesure de la tension du fil et par un étage (25) d'exploitation des signaux du capteur dans lequel s'effectue une association des valeurs de mesure du capteur à la position respective du guide-fil (12) et la formation d'une moyenne des valeurs de mesure de la tension du fil pour les diverses positions sur un certain nombre de cycles de pose, et par des moyens (26) pour une synchronisation continue entre la position du guide-fil (12) et la commande (18) du dispositif (5) de livraison de fil.
  7. Installation suivant la revendication 6, caractérisée en ce que la détermination de ladite grandeur de réglage s'effectue en tenant compte de la vitesse instantanée du fil.
  8. Installation suivant la revendication 6 ou 7, caractérisée en ce qu'il est prévu un premier étage (17) de commande pour l'entraînement du support (9) de fil et du dispositif (12) de pose du fil et un deuxième étage (18) de commande relié à celui-ci pour l'entraînement du dispositif (5) de livraison dont l'un comporte ledit étage (25) d'exploitation et en ce qu'il s'effectue entre les deux étages (17, 18) de commande une transmission continue et une synchronisation de la position du guide-fil (12).
  9. Installation suivant l'une des revendications 6 à 8, caractérisée en ce que le guide-fil (12) exécute un mouvement de changement en va-et-vient et en ce que l'entraînement du dispositif (5) de livraison est réglé de façon à effectuer aux positions de rebroussement du guide-fil (12) une réduction de la vitesse de livraison du fil servant à compenser le temps d'arrêt du guide-fil (12).
  10. Utilisation du procédé suivant l'une des revendications 1 à 5 sur des machines à bobiner, des machines aircovering ou des machine de texturation.
EP03022333A 2003-10-04 2003-10-04 Procédé et dispositif pour la régulation de la tension du fil dans une machine textile et l'utilisation du procédé Expired - Lifetime EP1520827B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03022333A EP1520827B1 (fr) 2003-10-04 2003-10-04 Procédé et dispositif pour la régulation de la tension du fil dans une machine textile et l'utilisation du procédé
AT03022333T ATE345303T1 (de) 2003-10-04 2003-10-04 Verfahren und vorrichtung zur regelung der fadenspannung auf einer textilmaschine, sowie anwendung des verfahrens
DE50305700T DE50305700D1 (de) 2003-10-04 2003-10-04 Verfahren und Vorrichtung zur Regelung der Fadenspannung auf einer Textilmaschine, sowie Anwendung des Verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03022333A EP1520827B1 (fr) 2003-10-04 2003-10-04 Procédé et dispositif pour la régulation de la tension du fil dans une machine textile et l'utilisation du procédé

Publications (2)

Publication Number Publication Date
EP1520827A1 EP1520827A1 (fr) 2005-04-06
EP1520827B1 true EP1520827B1 (fr) 2006-11-15

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EP03022333A Expired - Lifetime EP1520827B1 (fr) 2003-10-04 2003-10-04 Procédé et dispositif pour la régulation de la tension du fil dans une machine textile et l'utilisation du procédé

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EP (1) EP1520827B1 (fr)
AT (1) ATE345303T1 (fr)
DE (1) DE50305700D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101913515B (zh) * 2010-07-15 2012-06-27 上海世纤新材料科技有限公司 卷绕机采用机械和电子自动调整线绳张力的恒张力系统
DE102014013652A1 (de) * 2014-09-21 2016-03-24 Hanning Elektro-Werke Gmbh & Co. Kg Antriebsanordnung
CN108425174B (zh) * 2018-05-24 2023-09-01 浙江理工大学 一种恒张力携纱装置及其工作方法
CN109230870B (zh) * 2018-10-12 2023-07-07 常州市新创智能科技有限公司 碳纤维展纤纱架分组力矩控制装置及控制方法
IT201900011448A1 (it) * 2019-07-11 2021-01-11 Lgl Electronics Spa Metodo per l'alimentazione di una pluralita' di filati ad una macchina tessile mediante rispettivi alimentatori di filato positivi
JP2022030632A (ja) * 2020-08-07 2022-02-18 Ｔｍｔマシナリー株式会社 糸巻取機
CN113682891B (zh) * 2021-09-07 2023-05-19 巨石集团有限公司 一种单机头双分拉饼络机及其饼络方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6023065B2 (ja) * 1978-02-16 1985-06-05 東レ株式会社 糸条巻取装置
US5141169A (en) * 1990-08-06 1992-08-25 Teijin Seiki Co., Ltd. Method and apparatus for winding a yarn according to desired tension and winding speed
GB9024396D0 (en) * 1990-11-09 1991-01-02 Jeftex Limited Thread package building
EP1125880A3 (fr) * 2000-02-17 2002-08-28 Schärer Schweiter Mettler AG Dispositif de production de bobines sur une machine à filer à bout libre
EP1318097B1 (fr) * 2001-12-05 2010-02-24 SSM Schärer Schweiter Mettler AG Procédé et dispositif pour contrôler la tension du fil dans une machine textile et l'usage de ce procédé

Also Published As

Publication number Publication date
DE50305700D1 (de) 2006-12-28
EP1520827A1 (fr) 2005-04-06
ATE345303T1 (de) 2006-12-15

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