EP1520825B1 - Procédé et dispositif pour la régulation de la tension du fil sur un bobinoir et l'utilisation du procédé - Google Patents

Procédé et dispositif pour la régulation de la tension du fil sur un bobinoir et l'utilisation du procédé Download PDF

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Publication number
EP1520825B1
EP1520825B1 EP03022331A EP03022331A EP1520825B1 EP 1520825 B1 EP1520825 B1 EP 1520825B1 EP 03022331 A EP03022331 A EP 03022331A EP 03022331 A EP03022331 A EP 03022331A EP 1520825 B1 EP1520825 B1 EP 1520825B1
Authority
EP
European Patent Office
Prior art keywords
thread
thread tension
tension
guide
yarn
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
EP03022331A
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German (de)
English (en)
Other versions
EP1520825A1 (fr
Inventor
Erwin Tschümperlin
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 DE50305699T priority Critical patent/DE50305699D1/de
Priority to AT03022331T priority patent/ATE345302T1/de
Priority to EP03022331A priority patent/EP1520825B1/fr
Publication of EP1520825A1 publication Critical patent/EP1520825A1/fr
Application granted granted Critical
Publication of EP1520825B1 publication Critical patent/EP1520825B1/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
    • B65H2515/12—Density
    • 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 winder on which the thread is withdrawn by a thread delivery from a supply and fed to a thread 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 is described in which a distinction of the fluctuations of the thread tension causing disturbances after periodic and stochastic disturbances takes place, and the periodic disturbances are calculated and taken into account for said controlled variable.
  • the stochastic disturbances are the disturbances caused by the withdrawal of the thread and the periodic ones Faults are caused by the thread laying disturbances. Since the latter are geometric, they can be calculated. It has been found that by this method, the variations in the thread tension are not sufficiently well compensated in all cases, so that the tolerance range of the thread tension in the product produced is still relatively high.
  • this known method for regulating the thread tension on a winding machine is to be improved in such a way that the compensation of the periodic thread tension fluctuations is further improved, thereby narrowing the tolerance range of the thread tension in the product produced and improving the quality of the spool.
  • edge softening a targeted softening or optionally also hardening of the edges should be possible, which is only possible with the machines in operation today by a stroke of the thread laying process influencing.
  • a cyclical shortening of the stroke of the thread guide of the thread laying takes place.
  • this method is only time-controlled and has no link with the current position of the thread guide.
  • edge softening can not be re-processed under different operating conditions.
  • the 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 the measured fluctuations in the thread tension for said controlled variable are taken into account, with a continuous synchronization between the position of the thread guide and the control of the thread delivery takes place, and that a thread tension profile is specified.
  • 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.
  • the thread tension can be selectively changed, whereby both a reproducible edge softening and a compensation of bulges is possible.
  • the method can also be used for bevels of the coil edges and asymmetric coil construction.
  • a first preferred embodiment of the method according to the invention is characterized in that the thread tension profile is predetermined by entering an effective distance and a percentage reduction of the nominal thread tension.
  • the effective distance is preferably entered as a distance from an edge of a coil to be produced.
  • a second preferred embodiment of the method according to the invention is characterized in that the thread tension profile is predetermined by inputting a curve consisting of several pairs of values with the position of the thread guide and the thread tension, which relates to the stroke length to be wound.
  • the thread tension profile can be predetermined as a function of the coil diameter and / or of further parameters.
  • Such further parameters are formed for example by the stroke of the thread guide, the bevel of the coil to be produced or the compensation of bulges.
  • the invention further relates to a device for controlling the thread tension on a winder, 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 inventive device is characterized by a sensor for measuring the thread tension, 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 takes place, by means for a continuous synchronization between the position of the thread guide and the control of Thread delivery and by means for the specification of a thread tension profile.
  • a first preferred embodiment is characterized in that a control of the delivery mechanism corresponding to the thread tension profile takes place.
  • a second preferred embodiment of the device according to the invention is characterized in that the specification of the thread tension profile is effected by entering an effective distance and a percentage reduction of the nominal thread tension.
  • a third preferred embodiment is characterized in that the specification of the thread tension profile is effected by inputting a curve consisting of several pairs of values with the position of the thread guide and the associated thread tension and relating to the stroke length to be wound.
  • the invention further relates to an application of said method for influencing the quality of the coil edges.
  • the application according to the invention is characterized in that the position-dependent control of the thread tension is used for softening or hardening the edges of the manufactured coils, for producing bevelled coil flanks, for compensating bulges or for asymmetrical coil construction of cylindrical or conical coils.
  • 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, which scans the movement of the drive wheel 16 or a rigidly connected to this 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 thread guide 12 and any other sensors, such as the speed of the coil 10, are connected to a spindle control 17, which said motors on the basis of programmed Spulparametem 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.
  • This difference in length corresponds to a difference in the thread tension, which is greater at the reversal points than in the middle.
  • the thread tension thus reaches its maximum value at a reversal point, decreases towards the middle, reaches its lowest value there and then rises again until the reversal point.
  • 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.
  • a thread tension profile is predetermined in order to improve the quality of the spool 10 overall and in particular at the spool edges.
  • the quality improvement measures include targeted edge softening or edge hardening, as well as influencing the thread tension on beveling of the coil flanks, compensation of bulges and asymmetric coil construction.
  • the yarn tension profile is dependent on the diameter of the coil 10 and / or the stroke of the yarn guide 12 and it is realized by the thread laying 11 by a corresponding control of the yarn feeding by the yarn delivery 5.
  • the thread tension is specified by inputting an effective distance, which is, for example, the distance from an edge of the spool 10, and a percentage change in the nominal thread tension or by entering a curve defined from several value pairs, which relates in each case to the stroke length to be wound. In most cases (edge softening), changing the thread tension will be a thread tension reduction.
  • the named value pairs are the position of the thread guide 12 and the corresponding thread tension. Different winding lengths and take-up speeds can be considered, and the yarn tension profile is adaptable depending on other parameters, such as bevel or compensation, and it is also applicable to conical bobbins where the yarn tension change is reproducible and can be operated under all operating conditions.
  • the diagram of FIG. 2 shows the control loop for the described control of the thread tension:
  • the upper left recognizes the parameters of the spindle control 17, 19 this is the laying geometry and the Aufwickelgeometrie, including the delivery control 18 specifiable setpoint 20 of the thread tension and the predetermined thread tension profile.
  • the latter are 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.

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

Claims (13)

  1. Procédé de régulation de la tension du fil sur un bobinoir, sur lequel le fil (F) est dévidé d'une réserve (2) par un dispositif (5) de livraison de fil et est apporté à un dispositif (11) de pose du fil ayant un guide-fil (12), une grandeur de réglage 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 (12) et l'on tient compte des fluctuations ainsi mesurées de la tension du fil pour ladite grandeur de réglage, une synchronisation continue s'effectuant entre la position du guide-fil (12) et la commande (18) du dispositif (5) de livraison du fil et en ce qu'il est prescrit un profil de tension du fil.
  2. Procédé suivant la revendication 1, caractérisé en ce que l'on prescrit le profil de tension du fil par entrée d'une distance efficace et d'une diminution en pourcentage de la tension de consigne du fil.
  3. Procédé suivant la revendication 2, caractérisé en ce qu'on entre la distance efficace sous la forme d'une distance à un bord d'une bobine (10) à produire.
  4. Procédé suivant la revendication 1, caractérisé en ce que l'on prescrit le profil de tension du fil en entrant une courbe constituée de plusieurs paires de valeurs suivant la position du guide-fil (12) et de la tension du fil, la courbe se rapportant à la longueur de course de bobinage.
  5. Procédé suivant l'une des revendications 1 à 4, 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.
  6. Procédé suivant l'une des revendications 1 à 5, caractérisé en ce que l'on peut prescrire le profil de tension du fil en fonction du diamètre de la bobine et/ou d'autres paramètres.
  7. Procédé suivant la revendication 6, caractérisé en ce que l'on forme lesdits autres paramètres par la course du guide-fil (12), l'inclinaison de la bobine (10) à produire ou la compensation de bombements.
  8. Installation de régulation de la tension du fil sur un bobinoir 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 (4) du dispositif (5) de livraison étant réglé de manière 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'évaluation des signaux du capteur dans lequel il s'effectue une association des valeurs de mesure du capteur (6) à la position respective du guide-fil (12), 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 et par des moyens pour la prescription d'un profil de tension du fil.
  9. Installation suivant la revendication 8, caractérisée en ce qu'une commande du dispositif (5) de livraison du fil s'effectue conformément au profil de la tension du fil.
  10. Installation suivant la revendication 9, caractérisée en ce que la prescription du profil de la tension du fil s'effectue en entrant une distance efficace et une diminution en pourcentage de la tension de consigne du fil.
  11. Installation suivant la revendication 9, caractérisée en ce que la prescription du profil de la tension du fil s'effectue par entrée d'une courbe constituée de plusieurs paires de valeurs suivant la position du guide-fil (12) et de la tension du fil associée et se rapportant à la longueur de course de bobinage.
  12. Installation suivant l'une des revendications 8 à 11, caractérisée par un premier étage (17) de commande pour l'entraînement du porte-fil (9) et du dispositif (11) de pose du fil et par un deuxième étage (18) de commande relié à celui-ci pour l'entraînement du dispositif (5) de fourniture du fil 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).
  13. Application du procédé suivant l'une des revendications 1 à 7 pour influer sur la qualité des bords de la bobine, caractérisée en ce que l'on utilise la régulation en fonction de la position de la tension du fil pour ramollir ou durcir les bords de la bobine (10) produite, pour la production de flancs de bobine inclinés, pour la compensation de bombements ou dans la construction dissymétrique de bobines cylindriques ou coniques.
EP03022331A 2003-10-04 2003-10-04 Procédé et dispositif pour la régulation de la tension du fil sur un bobinoir et l'utilisation du procédé Expired - Lifetime EP1520825B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE50305699T DE50305699D1 (de) 2003-10-04 2003-10-04 Verfahren und Vorrichtung zur Regelung der Fadenspannung auf einer Spulmaschine, sowie Anwendung des Verfahrens
AT03022331T ATE345302T1 (de) 2003-10-04 2003-10-04 Verfahren und vorrichtung zur regelung der fadenspannung auf einer spulmaschine, sowie anwendung des verfahrens
EP03022331A EP1520825B1 (fr) 2003-10-04 2003-10-04 Procédé et dispositif pour la régulation de la tension du fil sur un bobinoir et l'utilisation du procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03022331A EP1520825B1 (fr) 2003-10-04 2003-10-04 Procédé et dispositif pour la régulation de la tension du fil sur un bobinoir et l'utilisation du procédé

Publications (2)

Publication Number Publication Date
EP1520825A1 EP1520825A1 (fr) 2005-04-06
EP1520825B1 true EP1520825B1 (fr) 2006-11-15

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EP03022331A Expired - Lifetime EP1520825B1 (fr) 2003-10-04 2003-10-04 Procédé et dispositif pour la régulation de la tension du fil sur un bobinoir et l'utilisation du procédé

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EP (1) EP1520825B1 (fr)
AT (1) ATE345302T1 (fr)
DE (1) DE50305699D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5730557B2 (ja) * 2010-12-14 2015-06-10 Ｔｍｔマシナリー株式会社 糸条巻取機
DE102012004910A1 (de) * 2012-03-09 2013-09-12 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Optimieren der Spulgeschwindigkeit einer Arbeitsstelle eines Spulautomaten
CN115520724B (zh) * 2022-09-29 2023-11-07 浙江康立自控科技有限公司 一种络丝机卷绕装置纠偏控制系统及方法

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

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Publication number Publication date
ATE345302T1 (de) 2006-12-15
EP1520825A1 (fr) 2005-04-06
DE50305699D1 (de) 2006-12-28

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