EP1960574B1 - Procede pour rattacher un fil ainsi que machine de filature a rotor pour la mise en uvre du procede - Google Patents

Procede pour rattacher un fil ainsi que machine de filature a rotor pour la mise en uvre du procede Download PDF

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Publication number
EP1960574B1
EP1960574B1 EP06818335.9A EP06818335A EP1960574B1 EP 1960574 B1 EP1960574 B1 EP 1960574B1 EP 06818335 A EP06818335 A EP 06818335A EP 1960574 B1 EP1960574 B1 EP 1960574B1
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EP
European Patent Office
Prior art keywords
thread
rotor
spinning
function
piecing
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EP06818335.9A
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German (de)
English (en)
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EP1960574A1 (fr
Inventor
Manfred Lassmann
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Saurer Spinning Solutions GmbH and Co KG
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Saurer Germany GmbH and Co KG
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Publication of EP1960574A1 publication Critical patent/EP1960574A1/fr
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • D01H4/50—Piecing arrangements; Control therefor for rotor spinning
    • 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

Definitions

  • the present invention relates to a method for piecing the thread according to the preamble of claim 1 and to a rotor spinning machine according to the preamble of claim 13.
  • the piecing is usually carried out at the individual spinning stations of the open-end rotor spinning machines by a spinning along the spinning machine piecing, the so-called piecing.
  • the control of piecing is done by means of a piecing program.
  • the quality of piecing in terms of their appearance and strength is significantly influenced by an optimal parameterization of the piecing program.
  • the very complex process of determining the optimal piecing parameters must hitherto be carried out after each batch change and after each change of spinning parameters, such as, for example, a change in the draft, the rotation coefficient, the rotor speed and the like. Even with experienced users, a sufficiently good attitude can often only be found after hours. This task is made more difficult in the spinning of fine yarns with high yarn counts. With the small thread diameters, for example 0.2 mm with a yarn count of Nm 50, it is no longer possible for the user to visually record the deviations occurring in the 100th millimeter range without a machine visualization of the thread diameter.
  • the sliver feeder is turned off.
  • the trailing opening roller still releases fibers from the tuft.
  • the tuft is equalized before each piecing. Until piecing fibers are combed out of the tuft, whereby the tuft is shortened.
  • the pre-feed to form a fiber ring occurs for a predetermined time and is then turned off.
  • the amount of fibers fed in addition to the duration of the pre-feed can also be controlled by the adjustment of the feed rate.
  • the process of piecing begins with the rotor start. Upon reaching a preset piecing rotor speed, feeding of fibers begins. In this case, a certain delay occurs in the achievement of the required fiber flow and optionally causes a diameter deviation after the piecer. Therefore, the fiber feed is switched on again shortly before the start of the thread take-off.
  • the withdrawal speed then has a value which corresponds to the instantaneous rotor speed while maintaining the desired rotation of the spooled yarn. Until the operating rotor speed is reached, the take-off speed follows the increase in the rotor speed.
  • the fiber flow will react with delay even when the feed speed is increased. This can lead to diameter deviations of the thread occurring after the piecing. To avoid these unwanted diameter deviations, a so-called intake loading is performed.
  • the draw-in addition attempts to ensure that 100% of the required amount of fiber is present in the rotor at each draw-off time.
  • the intake charge equalizes the temporary shortfall due to a higher intake speed.
  • a linear increase of the fiber flow is assumed.
  • the optimization of the piecing requires the knowledge among other things of the parameters: accumulation length, accumulation amount and lead time of the feeder, whereby the necessary lead time of the feeder is assumed to be constant for a given spinning geometry.
  • a piecing device which is set up to determine the length of the draw-in addition required for the compensation of the diameter deviation from the determined length of the diameter deviation.
  • a predeterminable number of Testanspinnern is generated without Aufzugsaufaddtechnik, but with reduced distortion, the number of which is determined depending on the height of the nominal delay.
  • the starting point for the summation is an empirical value based on the average stack length. In staple length distributions of natural fibers, which vary accordingly, this leads from the outset to a relatively high degree of inaccuracy. This first piecing is followed by a longer optimization phase in which additional influences, such as opening roller set, opening roller speed, rotor ramp time, etc., are to be compensated, which makes the empirical determination relatively tedious. In addition, the result of this optimization is reasonably satisfactory only with great effort.
  • the DE 199 55 674 A1 an algorithm that determines the length of the thin spot using test piecings made without draw-in addition. So that these Testanspinner can develop with pronounced thin spot at the end of the piecing, for these Testanspinner the delay is reduced to obtain a spinnable yarn end. This distortion reduction must be re-calculated by an appropriate algorithm to obtain the actual values for the thin spot.
  • the determination of the fiber flow behavior under laboratory conditions can be done by video recordings of the fiber flow in the fiber guide channel.
  • the high technical complexity does not allow this method to be used on every machine.
  • the determination of the fiber flow behavior is to be carried out again with each change of the sliver.
  • both methods do not capture the actual effects of fiber flow behavior on the yarn since the determination of fiber flow can not be made at the point of yarn formation because the interior of the rotor is inaccessible to measurement during operation. In addition, both methods neglect the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the remind the gearing place in the rotor.
  • the invention is therefore based on the object to provide a method for piecing the thread, by the parameterization of a piecing process is simplified and to propose a rotor spinning machine, which is adapted to carry out the method.
  • Delay can be supplied, which reproduces the fiber flow behavior in the form of the respective fiber sliver quantity supplied to the rotor depending on the transport path of the sliver, and that from the rotor speed dependent run-up of the yarn take-off by means of the sliver function with time delay, the speed of Faserbandeinzuges so controlled.wird that resulting from the sliver function resulting fiber deficit is compensated by dynamic load addition in height and length.
  • the sliver function determined after the measurement phase makes it possible to determine the fiber sliver weight available for each intake path and the instantaneous speed of the intake resulting from this intake path for any combination of settings of the spinning parameters.
  • the sliver function determined according to the invention takes into account the fiber flow behavior which is subject to a number of influences, the main influence of which results from the natural short-wave and long-wave scattering of the sliver and which has an effect in the spinning rotor at the point of origin of the thread.
  • the parameterization of the piecing process can be considerably simplified, since the fiber flow behavior, which decisively influences the piecing process, is taken into account by this function.
  • the fiber band function describes the fiber flow behavior at the location of yarn formation, in the rotor, and takes into account the backdoubling of the forming thread taking place in the rotor.
  • a sliver characteristic value can be calculated, which is independent of a variation of the spinning parameters and / or spinning means and reflects the fiber flow behavior.
  • the sliver characteristic value is used to simplify the description of the sliver function. Therefore, a new calculation of the sliver characteristic value or determination of the sliver function is required only with a sliver change as a result of a lot change with other sliver material, since the fiber flow behavior may vary depending on the sliver material used.
  • the time offset between thread withdrawal and sliver feed which results from the geometric structure of the components involved in the spinning process, can be determined by measurement.
  • the speed profiles of the retraction drive and the trigger drive during the measurement phase can be synchronized taking into account the delay. This takes into account the influence of the delay occurring when switching on the drive of the sliver retraction.
  • the speed of the retraction drive is calculated as a function of the rotor speed at the time of the take-off, the rotation and the delay. To determine the rotor speed at the time of withdrawal, the measured speed increase of the rotor during startup can be used.
  • the distortion reduced in the measuring phase should be selected such that the diameter of the spun-out thread is not less than 70% of the average thread diameter. This ensures that the diameter deviations generated in the measuring phase after the piecer have a sufficient characteristic that allows a suitable assessment of the Anspinnerprofiles averaged from the Anspinnern. Too large distortions would lead to a shallow increase of the piecing profile after the thin spot of the averaged piecing and complicate piecing, while too small distortion of the increase within the first rotor circumference and thus the increase of the piecing profile is concealed by the thinner of the averaged piecing by this , Preferably, the spinning distortions are halved.
  • the piecers created in the measuring phase should be discarded.
  • the piecers produced during the measuring phase can be sucked off after their detection by a suction device. This ensures that the piecings produced during the measuring phase with the reduced distortion do not reach the cross-wound bobbin to be produced.
  • the piecers produced during the measuring phase can be unwound from the bobbin before the next piecing operation.
  • the sensor device can be calibrated before each piecing process.
  • external influences caused for example by Avivage or fine dust and the like, which affect the measurement accuracy in the form of a basic shading, take into account.
  • a thread length should be measured in the measurement phase for the respective piecing, which corresponds to a minimum fiber length depending on the selected delay. This serves to detect all occurring variations in the thread diameter, such as thick and thin spots of the thread, which can be caused by the natural diameter variations of the sliver, or the like, over a thread length, which corresponds due to the selected delay a particular sliver feeder.
  • the fiber band function may be defined as an exponential function, in particular as an e-function.
  • the exponential function on which the fiber band function is based specifies the course of the yarn profile of the averaged piecer in more detail than the prior art linearization of the thread diameter deviation in the area after the piecer, and is thus better suited for describing the fiber flow behavior.
  • the fiber band function can be calculated to compensate for thread diameter fluctuations as a function of different threshold values.
  • control device is set up for carrying out the measurement phase and the evaluation for averaging and for determining the sliver function.
  • the degree of automation for automatic piecing can be increased.
  • the parameterization of the piecing process is simplified and can be carried out faster compared to the prior art.
  • the at least one spinning station can be designed as a pilot spinning station set up to carry out the method, which serves to determine the sliver function in the event of a change in the fiber sliver used.
  • the pilot spinning station can be determined for a pending lot change, in which a sliver with other properties is used, as the previously processed sliver, the sliver function.
  • the piecing parameters are determined from the sliver function determined for the fiber sliver or the fiber sliver characteristic which describes it, and then forwarded to the spinning stations at which the new sliver is to be processed.
  • Both a single spinning station for the entire rotor spinning machine and a spinning station per section of the rotor spinning machine can be designed as a pilot spinning station.
  • the control device can control the measurement and averaging of the reference thread.
  • the reference thread diameter determined in this way serves as the basis for normalizing the thread diameter of the piecing elements measured in the subsequent measuring phase.
  • a reference thread diameter to be used for the calculation of the sliver characteristic value is used, which serves as the basis for the assessment of the thread diameter deviation during piecing.
  • the control device can control the measurement, evaluation and averaging of the thread diameters of the at least five piecers produced in the measuring phase.
  • the recording, evaluation and processing of the determined data takes place at a central point of the rotor spinning machine.
  • control device can be connected via an operative connection with a control device of the respective spinning station, for example in the form of a bus system or by wirelessly communicating devices.
  • the rotor spinning machine may comprise at least one piecing device, in which the control device is integrated.
  • each spinning station may comprise a piecing device in which the control device is integrated.
  • Fig. 1 is schematically in side view one half of a cross-wound producing open-end rotor spinning machine, shown.
  • Such rotor spinning machines have, as is known, between their (not shown) end frames via a plurality of similar spinning stations 1, whose components are driven by a single motor.
  • the spinning station 1 has a resolving device 2, in which by means of the feed roller 4, a sliver 5 is introduced.
  • the drive of the feed roller 4 is effected by a continuously variable feed motor.
  • the sliver 5 is presented to a rotating in the housing 6, single-motor driven opening roller 7, which dissolves the fed sliver 5 into individual fibers 8.
  • the separated fibers 8 pass through the fiber guide channel 9 on the tapered sliding surface 10 of a spinning rotor 11 and from there into the fiber collecting groove 12. From the fiber collecting groove 12 of the spooled thread 16 is withdrawn through the thread withdrawal tube 17 in the direction of arrow 18 by means of a withdrawal direction 19 ,
  • the spinning rotor 11 is mounted on a shaft 13, which is preferably designed as an external rotor of a single-motor drive 14.
  • the take-off device 19 for the spun yarn 16 has a pair of rollers, between which the thread 16 to be withdrawn is guided. During normal spinning operation, the thread 16 follows the take-off device 19 of the broken line 15 and is continuously wound onto a cross-wound bobbin, not shown here.
  • the spinning stations 1 are each supplied with a piecing unit which can be moved along the rotor spinning machine and which carries out the automatic piecing operation. The piecing is not shown here for reasons of simplification.
  • each spinning station has suitable devices that perform the automatic piecing, without the use of one or more movable Anspinnaggregate needed.
  • the thread 16 is partially guided in the piecing unit, which is indicated schematically by the thread deflection between the take-off device 19 and a yarn guide 20.
  • the thread 16 extends here in piecing unit not shown between two further yarn guides 21 and 22 by a sensor device 23, with which the thread diameter is continuously measured during the piecing process.
  • the test signals for the length-related thread diameter measured values become one Control device 24 of the piecing unit supplied.
  • the yarn guide 20 is a cleaner 25 next seeded.
  • the cleaner 25 comprises a sensor device 23, which monitors the occurrence of diameter fluctuations of the thread 16 and, if necessary, outputs a thread break signal. If a thread interruption signal is output by the cleaner 25, this leads to an intake interruption of the sliver 5.
  • the cleaner 25 and the sensor device 23 may be designed as a related assembly, which is provided at each spinning station 1.
  • the arrangement of this assembly may preferably be provided in the region between the thread withdrawal tube 17 and the take-off device 19.
  • the spooled thread 16 is held under tension by the draw-off device 19, which ensures accurate measurement of the thread diameter.
  • the thread diameter is checked during the run-up of the spinning rotor 11 on the accelerated thread 16.
  • the thread 16 corresponding to the increasing spinning rotor speed, is withdrawn at an increasing speed from the thread withdrawal tube 17 by means of the take-off device 19.
  • the measuring frequency of the sensor device 23 can be adjusted to the changing speed of the accelerated thread 16
  • 27 pulses are picked up by the driven by a drive 26 thread take-off roller of the drawing device 19 by means of a sensor. These pulses provide information about the take-off speed and the length of the thread 16.
  • the sensor signals are fed to the control device 24, which controls the measuring frequency of the sensor 27 and adjusts the thread withdrawal speed.
  • the determination of the thread withdrawal speed can alternatively by, for example, a Non-contact measurement directly on the thread 16 done.
  • the control device 24 is connected to a control device 28 of the spinning station 1.
  • the control device 28 is connected via the line 29 with other modules of the rotor spinning machine.
  • the automatic piecing process requires optimum parameterization of the piecing program to be processed by the piecing unit.
  • a sliver function is described according to the invention for automatic parameterization, which describes the fiber flow behavior, wherein the flow behavior is influenced mainly by the natural short- and long-wave scattering of the sliver 5.
  • the sliver function gives the fiber flow behavior in the form of each of the spinning rotor 11 supplied sliver amount in response to the transport path of the sliver feeder.
  • a yarn length of at least 400 m is first spun out in a test phase. About this thread length of the thread diameter is measured by the sensor device 23 and forwarded to the control device 24.
  • an average value is formed, which is used as a reference thread diameter for further evaluation.
  • the reference thread diameter representing a thread diameter of 100%, is used to normalize subsequently measured thread diameters.
  • the draw-in addition during the test phase is set in the manner known from the prior art ( Raasch et. al. "Automatic piecing at OE rotor spinning ", Melliand Textile Reports 4/1989, pages 251-256 ).
  • the subsequent measurement phase is carried out in contrast to the previous test phase without load accumulation.
  • the draft is reduced, with the thread diameter of the diameter deviation arising after the piecer being not less than 70% of the reference thread diameter.
  • the delay is reduced by 50% by the feed speed of the sliver 5 is doubled.
  • the "rotation" describes the number of turns on 1 meter of thread 16 and n rotor the rotor speed at the time of withdrawal.
  • the calculation of the intake speed v intake thus requires the knowledge of the rotor speed n rotor (Startabzug) at the time of withdrawal of the thread 16.
  • n rotor indicates the rotor speed to be determined at the time of departure of the trigger
  • n rotor StarttzugGG
  • n rotor slope
  • the lead time indicates the length of time by which the draw-in motor 3 must precede the drive 26 of the draw-off device 19 in order to provide fiber material for the piecer.
  • a calibration of the sensor device 23 is performed. This is done in such a way that a measurement is carried out with the sensor device 23, without this the yarn 16 is supplied, so as to determine the existing Grundabschattung due to Avivage or other impurities such as fine dust particles and the like. In this way, the influences influencing the measurement result are taken into account in the subsequent measurements of the thread diameter by means of the sensor device 23.
  • the drive of the cross wound package to be wound up and the thread guide 20 are put out of operation.
  • the piecings produced in the measuring phase and the thread lengths adjoining the piecing are removed via the thread withdrawal tube 17. This ensures that the newly spun during the measurement phase Thread 16 with half the yarn count is not used as a piecing thread.
  • the measuring phase begins with the start of the withdrawal of the thread 16 when the rotor 11 has reached the minimum speed required for piecing. In this case, approximately 7 meters of the thread 16 are spun out and its thread diameter is recorded via the sensor device 23. Subsequently, the averaged measured values of the thread diameters of the measurement phase are normalized by means of the reference thread diameter already determined in the test phase.
  • the entire measurement phase is repeated at least 5 times in order to determine a meaningful sliver function.
  • An averaged piecer is formed from the recorded and normalized thread diameter values of the piecings.
  • the thread length before the averaged piecer remains unconsidered and does not flow into the subsequent determination of the fiber band function.
  • a thread profile is now used, which begins with the averaged piecing, as in Fig. 2 shown.
  • the averaged piecer has in its course of the thread profile a significant diameter deviation, from the course of which the fiber flow behavior describing the fiber band function is subsequently calculated.
  • the profile of the thread profile of the averaged piecer in the region of the diameter deviation can be reproduced essentially by the course of an exponential function, in particular an e-function.
  • Fig. 5 the course of the thread profile of the averaged piecing and the course of the corresponding sliver function are shown.
  • the X and Y coordinates of the minimum value of the yarn profile of the averaged piecer are first determined. Subsequently, the calculation of threshold values Y for different percent deviations from the reference thread diameter takes place.
  • the threshold values Y represent different percent thread diameters depending on different tau values.
  • the value for the yarn means rotor run-up results from the averaged thread diameter, which is measured at the end of the rotor run-up in the measuring phase, which is referenced for normalization to the reference thread diameter.
  • thread means Rotor Acceleration averaged thread diameter after rotor run-up Reference thread diameter ,
  • the calculated threshold values Y are compared with the actual profile of the yarn profile of the averaged teaser. For this purpose, if the calculated threshold values Y are exceeded, the corresponding X coordinate from the diagram representing the profile of the thread profile of the averaged piecing ( Fig. 3 ). In this way, a corresponding X value is determined for each tau value.
  • the thread length s is first used as a function in Depending on the thresholds Y and the determined values of the X-coordinate of the respective threshold value Y calculated for the respective Tau values.
  • the thread length s indicates the distance between the smallest thread diameter and the X coordinate when the respective threshold value Y is exceeded.
  • a yarn length mean value s M is formed from all yarn lengths s (X, Y) calculated by means of the fiber band function.
  • sliver characteristic s FKB X, Y
  • the feed motor 3 must precede the drive 26 of the trigger 19 by the required Auskmmzeit. Basically, the drive function of the feed motor 3 follows the drive function of the drive 26. For this purpose, it is necessary to simulate the drive function of the drive 26 of the take-off device 19 for the drive function of the feed motor 3.
  • the drive function of the feed motor 3 is determined by means of the sliver function s (X, Y).
  • the time t sub-section for spinning a leg is determined from the thread take-off s deduction and the instantaneous withdrawal speed v deduction.
  • the parameters required for the automatic piecing can be determined from the automatically determined sliver function or the sliver characteristic automatically determined from the sliver function, the sliver characteristic independent of a change in spinning parameters or spinning means, for example when using a rotor with a larger or smaller one Diameter than that used to calculate the sliver characteristic, can be used as a basis for the automatic determination of piecing parameters.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (16)

  1. Procédé de rattachement du fil sur une machine de filage à rotors équipée de plusieurs postes de filage (1) et dans laquelle un ruban de fibres, fourni par un élément d'insertion de rubans de fibres à partir d'une réserve en rubans, et détaché au moyen d'un dispositif d'ouverture, est délivré aux rotors de filage sous la forme d'un flux de fibres individuelles, sachant que le fil, filé dans le rotor de filage, est extrait dudit rotor de filage par un système d'extraction, comprenant au moins un système de commande (24) conçu pour saisir et interpréter des données d'une opération de rattachement automatique au niveau d'au moins un poste de filage (1), ainsi qu'au moins un système de détection (23) conçu pour mesurer le diamètre du fil et pour détecter la position du point de mesure associé d'une amorce de rattachement produite au cours de ladite opération de rattachement, la production successive de plusieurs amorces de rattachement étant commandée au moyen dudit système de commande (24), durant une phase de mesure, sans surcroît d'alimentation et avec étirage réduit,
    - des amorces de rattachement, dont le nombre est supérieur à cinq, étant successivement produites durant ladite phase de mesure, caractérisé par le fait
    - que les coordonnées des valeurs mesurées sont vouées, conjointement aux valeurs mesurées associées émanant des mesures individuelles des amorces de rattachement, à une interprétation visant à établir une moyenne et à déterminer, avec prise en compte de l'étirage réduit pour lesdites valeurs mesurées, une fonction de ruban de fibres qui reproduit le comportement du flux de fibres sous la forme de la quantité de ruban de fibres respectivement délivrée au rotor, d'une manière tributaire du trajet de transport de l'élément d'insertion du ruban de fibres, et
    - que, sur la base de la marche à plein régime de l'extraction du fil, tributaire de la vitesse de rotation dudit rotor, la vitesse dudit élément d'insertion du ruban de fibres est commandée avec décalage temporel, au moyen de ladite fonction de ruban de fibres, de façon telle que la hauteur et la longueur de la quantité de fibres manquante, résultant de ladite fonction de ruban de fibres, soient compensées par surcroît d'alimentation dynamique.
  2. Procédé selon la revendication 1, caractérisé par le fait qu'une valeur caractéristique du ruban de fibres, calculée sur la base de la fonction de ruban de fibres, est indépendante d'une variation des paramètres de filage et/ou des moyens de filage, et reproduit le comportement du flux de fibres.
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé par le fait que le décalage temporel entre l'extraction du fil et l'insertion du ruban de fibres, qui résulte de la structure géométrique des groupes structurels prenant part au processus de filage, est déterminé par mesure.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé par le fait que les allures de vitesse de l'entraînement d'insertion et de l'entraînement d'extraction sont synchronisées, durant la phase de mesure, avec prise en compte de l'étirage.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé par un rejet des amorces de rattachement produites durant la phase de mesure.
  6. Procédé selon la revendication 5, caractérisé par le fait que les amorces de rattachement produites durant la phase de mesure sont évacuées par aspiration, à l'issue de leur détection, par l'intermédiaire d'un système d'évacuation par aspiration.
  7. Procédé selon la revendication 5, caractérisé par le fait que les amorces de rattachement, produites durant la phase de mesure, sont dévidées de la bobine à l'issue de leur détection.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé par le fait que le système de détection (23) est calibré avant chaque opération de rattachement.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé par le fait que l'étirage, réduit durant la phase de mesure, est sélectionné de telle sorte que le diamètre du fil, à filage achevé, ne devienne pas inférieur à 70 % du diamètre de fil moyenné de la phase de test.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé par le fait qu'une longueur de fil, mesurée durant la phase de mesure pour l'amorce de rattachement considérée, correspond à une longueur minimale de ruban de fibres d'une manière tributaire de l'étirage sélectionné.
  11. Procédé selon l'une des revendications 1 à 10, caractérisé par le fait que la fonction de ruban de fibres est définie comme une fonction exponentielle.
  12. Procédé selon l'une des revendications 1 à 11, caractérisé par le fait que la fonction de ruban de fibres est calculée d'une manière tributaire de différentes valeurs de seuil (Y), en vue de compenser des fluctuations de diamètre du fil.
  13. Machine de filage à rotors, dévolue à la mise en oeuvre d'un procédé conforme à l'une des revendications 1 à 12, comprenant plusieurs postes de filage, au moins un système de commande (24) conçu pour saisir et interpréter des données d'une opération de rattachement automatique au niveau d'au moins un poste de filage (1), ainsi qu'au moins un système de détection (23) conçu pour mesurer le diamètre du fil et pour détecter la position du point de mesure associé d'une amorce de rattachement produite au cours de ladite opération de rattachement, la machine textile étant équipée d'un système de commande (24) agencé en vue de commander, durant une phase de mesure, la production successive de plusieurs amorces de rattachement, sans surcroît d'alimentation et avec étirage réduit, caractérisée par le fait que le système de commande (24) est agencé en vue de l'exécution automatique de la phase de mesure, et de l'interprétation et de l'établissement d'une moyenne ciblant la détermination de la fonction de ruban de fibres qui reproduit le comportement du flux de fibres, sous la forme de la quantité de fibres respectivement délivrée au rotor, d'une manière tributaire du trajet de transport de l'élément d'insertion du ruban de fibres.
  14. Machine de filage à rotors, selon la revendication 13, caractérisée par le fait que le système de commande (24) est raccordé, par l'intermédiaire d'une liaison opérante, à un dispositif de commande (28) du poste de filage (1) considéré.
  15. Machine de filage à rotors, selon l'une des revendications 13 ou 14, caractérisée par le fait que ladite machine de filage à rotors inclut au moins un dispositif de reprise de filage, dans lequel le système de commande (24) est intégré.
  16. Machine de filage à rotors, selon l'une des revendications 13 ou 14, caractérisée par le fait que chaque poste de filage inclut un dispositif de reprise de filage, dans lequel le système de commande (24) est intégré.
EP06818335.9A 2005-12-10 2006-11-02 Procede pour rattacher un fil ainsi que machine de filature a rotor pour la mise en uvre du procede Ceased EP1960574B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005059078A DE102005059078A1 (de) 2005-12-10 2005-12-10 Verfahren zum Anspinnen eines Fadens sowie Rotorspinnmaschine zur Durchführung des Verfahrens
PCT/EP2006/010502 WO2007065506A1 (fr) 2005-12-10 2006-11-02 Procede pour rattacher un fil ainsi que machine de filature a rotor pour la mise en œuvre du procede

Publications (2)

Publication Number Publication Date
EP1960574A1 EP1960574A1 (fr) 2008-08-27
EP1960574B1 true EP1960574B1 (fr) 2014-12-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06818335.9A Ceased EP1960574B1 (fr) 2005-12-10 2006-11-02 Procede pour rattacher un fil ainsi que machine de filature a rotor pour la mise en uvre du procede

Country Status (5)

Country Link
US (1) US8061116B2 (fr)
EP (1) EP1960574B1 (fr)
CN (1) CN101321901B (fr)
DE (1) DE102005059078A1 (fr)
WO (1) WO2007065506A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007018536B4 (de) * 2007-04-19 2018-05-30 Saurer Germany Gmbh & Co. Kg Offenend-Spinnmaschine
CN101565866B (zh) * 2009-04-17 2010-10-27 北京经纬纺机新技术有限公司 转杯纺纱机全自动接头控制方法及装置
DE102009050582A1 (de) * 2009-10-24 2010-05-20 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Anspinnen einer Offenend-Rotorspinnvorrichtung
CN103060967B (zh) * 2013-01-06 2015-05-13 经纬纺织机械股份有限公司 转杯纺纱机控制接头纱线位置的装置
EP3052416B1 (fr) * 2013-10-01 2018-03-28 Maschinenfabrik Rieter AG Épurateur de fil et poste de filage d'un métier à filer équipé dudit épurateur, ainsi que procédé permettant de faire fonctionner un poste de filage
CN109837625B (zh) * 2017-11-28 2021-06-18 张家港扬子纺纱有限公司 一种倍捻机精密定长检测仪
DE102020106124A1 (de) 2020-03-06 2021-09-09 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Spinnmaschine sowie Spinnmaschine
CN112848190A (zh) * 2021-01-04 2021-05-28 北京机科国创轻量化科学研究院有限公司 一种热塑坯料纤维含量实时监测方法与装置
CN113073408A (zh) * 2021-05-14 2021-07-06 江苏圣蓝科技有限公司 在线检测和判定转杯纺纱机纺纱部件故障的方法、装置和系统
CN115652486A (zh) * 2022-10-26 2023-01-31 上海兰宝传感科技股份有限公司 一种加弹机在线dty质量监测控制方法及系统

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DE3903782C2 (de) 1989-02-09 1994-02-24 Rieter Ingolstadt Spinnerei Verfahren zum Anspinnen einer Offenend-Spinnvorrichtung und Offenend-Spinnmaschine mit einer Einrichtung zum Anspinnen einzelner oder mehrerer Spinnvorrichtungen
DE4030100C2 (de) * 1990-09-22 2000-03-23 Schlafhorst & Co W Verfahren und Einrichtung zum Bestimmen der Änderungen von Kriterien eines automatischen Anspinnvorgangs
US5509261A (en) 1993-03-26 1996-04-23 W. Schlafhorst Ag & Co. Stepping motor arrangement for driving a silver feed roller in a rotor spinning machine
CH691687A5 (de) 1995-12-20 2001-09-14 Schlafhorst & Co W Verfahren zum Ueberprüfen des Fadenprofils beim Anspinnen in einer Offenend-Spinnmaschine.
CZ44097A3 (cs) * 1997-02-13 1998-10-14 Rieter Elitex A.S. Způsob individuálního zapřádání příze na pracovním místě rotorového dopřádacího stroje a zařízení k provádění tohoto způsobu
DE19955674A1 (de) 1999-11-19 2001-05-23 Schlafhorst & Co W Anspinnvorrichtung mit einer Auswerteeinrichtung zur Ermittlung von Parametern eines automatischen Anspinnvorgangs
DE10139072B4 (de) * 2001-08-09 2009-12-17 Oerlikon Textile Gmbh & Co. Kg Serviceaggregat zum Wiederanspinnen von Arbeitsstellen einer Offenend-Spinnmaschine
DE10327370A1 (de) 2003-06-18 2005-01-13 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren und Vorrichtung zum Anspinnen eines Fadens in einer Offenend-Spinnvorrichtung
DE102004040214A1 (de) * 2004-08-19 2006-03-02 Maschinenfabrik Rieter Ag Textilmaschine und Verfahren zur Ansetzeroptimierung
DE102005033562A1 (de) * 2005-07-19 2007-01-25 Saurer Gmbh & Co. Kg Verfahren zum Betreiben einer Offenend-Spinnvorrichtung

Also Published As

Publication number Publication date
CN101321901A (zh) 2008-12-10
DE102005059078A1 (de) 2007-06-14
WO2007065506A1 (fr) 2007-06-14
CN101321901B (zh) 2011-04-13
EP1960574A1 (fr) 2008-08-27
US20100071341A1 (en) 2010-03-25
US8061116B2 (en) 2011-11-22

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