EP0439183B1 - Method for measuring the traction force of a yarn - Google Patents
Method for measuring the traction force of a yarn Download PDFInfo
- Publication number
- EP0439183B1 EP0439183B1 EP91100967A EP91100967A EP0439183B1 EP 0439183 B1 EP0439183 B1 EP 0439183B1 EP 91100967 A EP91100967 A EP 91100967A EP 91100967 A EP91100967 A EP 91100967A EP 0439183 B1 EP0439183 B1 EP 0439183B1
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- European Patent Office
- Prior art keywords
- signal
- yarn
- value
- false
- twisting element
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- Expired - Lifetime
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
- D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
Definitions
- the invention relates to a method for monitoring the thread tension according to the preamble of claim 1. This method is known from EP 207 471 A1.
- the object of the invention is to control the twist on the one hand, but on the other hand, by thread tension measurement to still be able to carry out quality monitoring by measuring the tensile force.
- twist transmission of the false twister is understood to mean the magnitude of the frictional force of the false twister on the thread and / or the division of the frictional force into the twist-giving component and the promoting component.
- the principle of operation of the friction false twister is that one or more moving surfaces exert a frictional force on the thread, which has a twist-imparting and a thread tension-generating component.
- the twist-distributing component generates a torque on the thread, as a result of which it is twisted upstream, as seen in the direction of the thread. If the magnitude of the friction force e.g. changes by changing the coefficient of friction, so changes both the twist-distributing component and the thread tension generating component, i.e. the change in thread tension has an indirect value for the intensity of the texturing process.
- the invention succeeds in combining the quality-increasing measure of a regulated thread tension with a time-constant mean value and the quality-relevant detection of changes in friction force.
- the means is available, as suggested by claim 2, to influence the rotational speed of the friction false twister.
- this change does not significantly influence the twist distribution on the thread.
- the quality-enhancing effect of the largely constant thread tension remains. It is also possible to influence the thread tension behind the swirl device via a geometric adjustment on the swirl device, e.g. by changing the center distance.
- a friction false twister which consists of three axes arranged on the corners of an isosceles triangle with spanned disks that overlap in the center of the triangle, is characterized in particular for the implementation of the method by the characterizing features of claim 3, second alternative.
- the axes can be adjusted in particular by mounting two axes on eccentrics, which can be adjusted by a drive device.
- the figure shows a schematic representation of a processing point of a false twist crimping machine.
- the synthetic thread 1 is drawn off from the supply spool 2 by the input delivery unit 3.
- the texturing zone is formed between the input delivery unit 3 and the take-off delivery unit 9. It mainly comprises a heating rail 4, a cooling rail 5 and the friction false twister 6.
- the friction false twister has endlessly moving surfaces which are moved transversely to the thread axis and against which the thread lies. These surfaces give the thread a twist in the direction of the input delivery unit, which dissolves again in the direction of the output delivery unit 9.
- a thread tension measuring instrument 8 is arranged, by means of which the thread tension, also called “thread tension”, is measured and passed on as an output signal. It should be noted that after the starting delivery unit 9 there is a winding or an intermediate treatment by heating.
- the long-term value LW is supplied to a control device 12 together with a target value.
- the target value and the long-term value are compared with one another and converted into an adjustment variable VS.
- the adjusting variable VS adjusts an actuator 7, by means of which the twist transmission of the friction false twister 6 onto the thread is controlled.
- the output signal Z of the tensile force meter 8 as well as the adjustment signal VS of an evaluation device 10 are given.
- the adjustment signal VS represents the mean value.
- the monitoring of the adjustment signal within certain limits thus replaces the monitoring of the mean value according to this invention.
- the evaluation device 10 provides an evaluation of the current output signal Z, which represents the currently measured thread tension in accordance with the principles described in EP 207 471 A1. This means that an upper limit value and a lower limit value for the adjustment signal VS (GOVS, GUVS) are stored in the evaluation device 10. If the adjustment signal VS exceeds one of these limit values, an alarm signal is issued.
- the difference value DU between the current output signal Z and the adjustment signal VS - after both have previously been converted into compatible, comparable quantities - is formed in the evaluation device 10.
- the upper limit value and the lower limit value of this difference signal DU are stored in the evaluation device 10, and an alarm signal A occurs when the difference signal DU between the adjustment signal and the currently measured output signal Z exceeds one of the limit values GODU, GUDU .
- the adjusting device 7 can be the drive motor of the friction false twister, for example.
- the device 12 converts the difference signal from the long-term value and the target value into a variable, for example into a frequency, which determines the rotational speed of the drive motor 7 of the friction false twister designed as a synchronous motor or as an asynchronous motor.
- the adjusting device 7 can alternatively or additionally adjust the center distance, for example by the axes are each supported on an eccentric and the eccentrics are rotated accordingly depending on the adjustment signal VS (cf. DE-AS 21 30 550).
- the friction false twister consists of two disks, which clamp the thread between them and of which an elastic disk is pressed against the other disk by a pressing device (see e.g. EP 22 743 A1)
- the pressing force can be adjusted by the adjustment signal VS.
- DE-A1 33 06 594 For this purpose, reference is also made to DE-A1 33 06 594.
- the adjustment signal (VS) is to be output as an electrical current by the control device 12.
- this electric current is fed to the electromagnet and determines the frictional force that is exerted on the thread. This current is therefore also responsible for the fact that the thread tension can fluctuate only briefly and - measured over a longer period - is adjusted to the setpoint specified by the control device (R).
- this electrical current is used to determine other errors, such as those mentioned above.
- the electrical current and the current measured value - after conversion into comparable signal quality - are compared with one another and it is determined whether the current measured value leaves a specified tolerance band for the electrical current and / or it is determined when the electrical current leaves a predefined second tolerance band .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren zur Überwachung der Fadenzugkraft nach dem Oberbegriff des Anspruchs 1. Dieses Verfahren ist durch die EP 207 471 A1 bekannt.The invention relates to a method for monitoring the thread tension according to the preamble of claim 1. This method is known from EP 207 471 A1.
Dieses Verfahren gewährleistet, daß beim Falschzwirntexturieren die Qualitätsausbeute wesentlich verbessert wird.This process ensures that the quality yield is significantly improved in false twist texturing.
Durch die DE 33 06 594 A1 ist ein Verfahren zum Falschzwirntexturieren bekannt, bei dem das von dem Friktionsfalschdrallgeber auf den Faden übertragene Drallmoment in Abhängigkeit von der Zugkraft verstellt wird, und zwar indem die Anpreßkraft zweier auf den Faden einwirkenden Oberflächen entsprechend verstellt wird. Mit diesem Verfahren kann die Fadenzugkraft auf einen konstanten Wert eingeregelt werden. Der Nachteil dieses Verfahrens bei gleichzeitiger Anwendung des eingangs geschilderten bekannten Verfahrens ist jedoch, daß Schwankungen des Mittelwertes nicht mehr in Erscheinung treten und daher u.U. Fehler, die durch die Fadenzugkraftmessung erfaßt werden sollten, nicht mehr erfaßt werden können. Wenn also z.B. durch Verschleiß eines Lieferwerkes oder Fehler in der Temperaturführung der Texturierzone Fadenzugkraftänderungen auftreten, so dient das Meßverfahren nach der EP 207 471 A1 dem Zweck, diese Fehler aufzudecken. Durch Anwendung des Verfahrens nach der DE 33 06 594 A1 wird die Fadenzugkraft jedoch unter Außerachtlassung dieser Fehler ausgeregelt und dadurch werden diese Fehler überdeckt.
Aufgabe der Erfindung ist es, durch Fadenzugkraftmessung einerseits die Drallgebung zu steuern, andererseits aber trotzdem die Möglichkeit zu erhalten, durch Zugkraftmessung auch eine Qualitätsüberwachung durchzuführen.From DE 33 06 594 A1, a method for false twist texturing is known, in which the twist moment transmitted from the friction false twist transmitter to the thread is adjusted as a function of the tensile force, specifically by adjusting the contact pressure of two surfaces acting on the thread. With this method the thread tension can be adjusted to a constant value. The disadvantage of this method with simultaneous use of the known method described at the outset, however, is that fluctuations in the mean value no longer appear and therefore errors which should be detected by the thread tension measurement can no longer be detected. If, for example, changes in the tensile force occur due to wear of a delivery unit or errors in the temperature control of the texturing zone, the measuring method according to EP 207 471 A1 serves the purpose of detecting these errors. By applying the method according to DE 33 06 594 A1, however, the thread tension is corrected without taking these errors into account and these errors are thereby covered.
The object of the invention is to control the twist on the one hand, but on the other hand, by thread tension measurement to still be able to carry out quality monitoring by measuring the tensile force.
Die Lösung ergibt sich aus dem Kennzeichen des Anspruchs 1.The solution results from the characterizing part of claim 1.
Unter Drallübertragung des Falschdrallgebers wird in dieser Anmeldung die Größe der Reibkraft des Falschdrallers am Faden und/oder die Aufteilung der Reibkraft in die Drallgebende Komponente und fördernde Komponente verstanden.In this application, twist transmission of the false twister is understood to mean the magnitude of the frictional force of the false twister on the thread and / or the division of the frictional force into the twist-giving component and the promoting component.
Das Funktionsprinzip des Friktionsfalschdrallers besteht darin, daß eine oder mehrere bewegte Oberflächen eine Reibkraft auf den Faden ausüben, die eine drallerteilende und eine fadenzugkrafterzeugende Komponente aufweist. Die drallerteilende Komponente erzeugt ein Drehmoment am Faden, wodurch dieser - in Laufrichtung des Fadens gesehen - stromaufwärts gezwirnt wird. Wenn sich die Größe der Reibkraft z.B. durch Änderung des Reibbeiwertes ändert, so ändert sich sowohl die drallerteilende Komponente wie auch die fadenzugkrafterzeugende Komponente, d.h. die Änderung der Fadenzugkraft hat einen indirekten Aussagewert für die Intensität des Texturierprozesses.The principle of operation of the friction false twister is that one or more moving surfaces exert a frictional force on the thread, which has a twist-imparting and a thread tension-generating component. The twist-distributing component generates a torque on the thread, as a result of which it is twisted upstream, as seen in the direction of the thread. If the magnitude of the friction force e.g. changes by changing the coefficient of friction, so changes both the twist-distributing component and the thread tension generating component, i.e. the change in thread tension has an indirect value for the intensity of the texturing process.
Erfahrungsgemäß stehen einige Texturierfehler wie Kapillarbrüche, Stellen mit nicht aufgelöstem Drall (tight spots) und die Dichte der Aufwickelpakete in direktem Zusammenhang mit der Fadenzugkraft nach dem Drallgeber. Insofern wirkt es qualitätsverbessernd, wenn die Fadenzugkraft innerhalb enger vorgegebener Grenzen gehalten wird.Experience has shown that some texturing errors such as capillary breaks, places with undissolved twist (tight spots) and the density of the winding packages are directly related to the thread tension after the twist sensor. In this respect, it improves quality if the thread tension is kept within narrow, predetermined limits.
Mit der Erfindung gelingt es, die qualitätssteigernde Maßnahme einer geregelten Fadenspannung mit zeitlich konstantem Mittelwert und die qualitätsrelevante Erfassung von Reibkraftänderungen miteinander zu verbinden.The invention succeeds in combining the quality-increasing measure of a regulated thread tension with a time-constant mean value and the quality-relevant detection of changes in friction force.
Zur Beeinflussung der Drallübertragung steht - wie durch Anspruch 2 vorgeschlagen - insbesondere das Mittel zur Verfügung, die Drehgeschwindigkeit des Friktionsfalschdrallers zu beeinflussen. Bei entsprechender Auslegung der Geometrie im Drallgeber wird durch diese Änderung (innerhalb gewisser Grenzen) die Drallerteilung am Faden nicht wesentlich beeinflußt. Es bleibt der qualitätsfördernde Effekt der weitgehend konstanten Fadenzugkraft. Eine Beeinflussung der Fadenzugkraft hinter dem Drallgeber ist auch über eine geometrische Verstellung am Drallgeber möglich z.B. durch gezielte Veränderung des Achsabstandes.In order to influence the twist transmission, the means is available, as suggested by
Bei einem Friktionsfalschdraller, der aus zwei Oberflächen besteht, die den Faden zwischen sich einklemmen - vergleiche z.B. EP 22 743 (Bag. 1187), US-PS 4,145,871 - wird vorzugsweise der Andruck verstellt, wie es auch durch die DE-A1 33 06 594 vorgeschlagen wird.For a friction false twister that consists of two surfaces that pinch the thread between them - compare e.g. EP 22 743 (Bag. 1187), US Pat. No. 4,145,871 - the pressure is preferably adjusted, as is also proposed by DE-A1 33 06 594.
Ein Friktionsfalschdraller, der aus drei auf den Ecken eines gleichschenkligen Dreiecks angeordneten Achsen mit darauf aufgespannten, sich im Zentrum des Dreiecks überlappenden Scheiben besteht, zeichnet sich zur Ausführung des Verfahrens insbesondere durch die kennzeichnenden Merkmale des Anspruchs 3, zweite Alternative, aus.
Die Verstellung der Achsen kann insbesondere dadurch geschehen, daß zwei Achsen auf Exzentern gelagert werden, welche durch eine Antriebseinrichtung verstellt werden können.A friction false twister, which consists of three axes arranged on the corners of an isosceles triangle with spanned disks that overlap in the center of the triangle, is characterized in particular for the implementation of the method by the characterizing features of
The axes can be adjusted in particular by mounting two axes on eccentrics, which can be adjusted by a drive device.
Durch die DE-A1 33 06 594 ist es auch bekannt, das Fadenzugkraftsignal zur Ermittlung der Betriebsfähigkeit der Texturierstelle zu verwenden, indem das Meßsignal der Fadenzugkraft auf einen Grenzwertsignalgeber gegeben wird, der bei Überschreiten gewisser Maximalwerte und/oder Minimalwerte der Fadenzugkraft ein Ausgangssignal gibt. Dabei wird jedoch die Aussagekraft des Meßverfahrens nach der EP 207 471 A1, bei der der laufende Meßwert auf den Mittelwert bezogen wird, nicht erreicht.From DE-A1 33 06 594 it is also known to use the thread tension signal to determine the operability of the texturing point by passing the measurement signal of the thread tension to a limit signal generator which gives an output signal when certain maximum values and / or minimum values of the thread tension are exceeded. However, the informative value of the measuring method according to the EP 207 471 A1, in which the current measured value is related to the mean value, has not been reached.
Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnung beschrieben.Exemplary embodiments of the invention are described below with reference to the drawing.
Die Figur zeigt eine schematische Darstellung einer Bearbeitungsstelle einer Falschzwirnkräuselmaschine. Der synthetische Faden 1 wird durch das Eingangslieferwerk 3 von der Vorlagespule 2 abgezogen. Die Texturierzone wird zwischen dem Eingangslieferwerk 3 und dem Abzugslieferwerk 9 gebildet. Sie umfaßt vor allem eine Heizschiene 4, eine Kühlschiene 5 und den Friktionsfalschdraller 6. Der Friktionsfalschdraller weist endlos bewegte Oberflächen auf, die quer zur Fadenachse bewegt sind und an denen der Faden anliegt. Diese Oberflächen erteilen dem Faden in Richtung Eingangslieferwerk eine Zwirnung, die sich in Richtung des Ausgangslieferwerks 9 wieder auflöst.The figure shows a schematic representation of a processing point of a false twist crimping machine. The synthetic thread 1 is drawn off from the
Zwischen dem Friktionsfalschdraller 6 und dem Ausgangslieferwerk 9 ist ein Fadenzugkraftmeßinstrument 8 angeordnet, durch welches die Fadenzugkraft, auch "Fadenspannung" genannt, gemessen und als Ausgangssignal weitergegeben wird. Es sei bemerkt, daß hinter dem Ausgangslieferwerk 9 eine Aufwicklung oder noch eine Zwischenbehandlung durch Erwärmung folgt.Between the friction false twister 6 and the
Das Ausgangssignal Z des Zugkraftmessers 8, welches die gemessene Fadenzugkraft repräsentiert, wird über einen Filter 11 in einen Langzeitwert LW umgeformt. Der Langzeitwert LW wird gemeinsam mit einem Sollwert einer Regeleinrichtung 12 zugeführt. In der Regeleinrichtung 12 werden der Sollwert und der Langzeitwert miteinander verglichen und in eine Verstellgröße VS umgeformt. Durch die Verstellgröße VS wird ein Stellglied 7 verstellt, durch welches die Drallübertragung des Friktionsfalschdrallers 6 auf den Faden gesteuert wird.The output signal Z of the
Das Ausgangssignal Z des Zugkraftmessers 8 wird ebenso wie das Verstellsignal VS einer Auswerteinrichtung 10 aufgegeben. In der Auswerteinrichtung 10 repräsentiert das Verstellsignal VS den Mittelwert. Die Überwachung des Verstellsignals innerhalb bestimmter Grenzen ersetzt also nach dieser Erfindung die Überwachung des Mittelwertes. Die Auswerteinrichtung 10 liefert eine Auswertung des aktuellen Ausgangssignals Z, welches die aktuell gemessene Fadenzugkraft repräsentiert entsprechend den Grundsätzen, die in der EP 207 471 A1 beschrieben sind. Das bedeutet: In der Auswerteinrichtung 10 ist ein oberer Grenzwert und ein unterer Grenzwert für das Verstellsignal VS eingespeichert (GOVS, GUVS). Wenn das Verstellsignal VS einen dieser Grenzwerte überschreitet, erfolgt ein Alarmsignal. Ferner wird in der Auswerteinrichtung 10 der Differenzwert DU zwischen dem aktuellen Ausgangssignal Z und dem Verstellsignal VS - nachdem beide zuvor in kompatible, vergleichbare Größen gewandelt worden sind - gebildet. Schließlich ist in der Auswerteinrichtung 10 der obere Grenzwert und der untere Grenzwert dieses Differenzsignales DU (GODU, GUDU) gespeichert, und es erfolgt ein Alarmsignal A, wenn das Differenzsignal DU zwischen dem Verstellsignal und dem aktuell gemessenen Ausgangssignal Z einen der Grenzwerte GODU, GUDU überschreitet.The output signal Z of the
Die Verstelleinrichtung 7 kann z.B. der Antriebsmotor des Friktionsfalschdrallers sein. In diesem Falle erfolgt in der Einrichtung 12 eine Umwandlung des Differenzsignals aus dem Langzeitwert und dem Sollwert in eine Größe, z.B. in eine Frequenz, die die Drehzahl des als Synchronmotor oder als Asynchronmotor ausgelegten Antriebsmotors 7 des Friktionsfalschdrallers bestimmt.The adjusting
Wenn der Friktionsfalschdraller aus drei Achsen besteht, die auf den Eckpunkten eines gleichseitigen Dreiecks angeordnet sind und auf welchen Scheiben aufgespannt sind, die sich im Zentrum des Dreiecks überlappen, so kann durch die Verstelleinrichtung 7 alternativ oder zusätzlich der Achsabstand verstellt werden, indem z.B. die Achsen auf jeweils einem Exzenter gelagert und die Exzenter in Abhängigkeit von dem Verstellsignal VS entsprechend verdreht werden (vgl. DE-AS 21 30 550).If the friction false twister consists of three axes, which are arranged on the corner points of an equilateral triangle and on which discs are spanned, which overlap in the center of the triangle, the adjusting
Wenn der Friktionsfalschdraller aus zwei Scheiben besteht, die den Faden zwischen sich einklemmen und von denen eine elastische Scheibe durch eine Andrückeinrichtung gegen die andere Scheibe gedrückt wird (vgl. z.B. EP 22 743 A1), so kann durch das Verstellsignal VS die Anpreßkraft verstellt werden. Hierzu wird auch auf die DE-A1 33 06 594 verwiesen.If the friction false twister consists of two disks, which clamp the thread between them and of which an elastic disk is pressed against the other disk by a pressing device (see e.g. EP 22 743 A1), the pressing force can be adjusted by the adjustment signal VS. For this purpose, reference is also made to DE-A1 33 06 594.
Wenn die Anpreßkraft durch einen Stößel ausgeübt wird, welcher durch einen Elektromagneten auf die Rückseite einer der Scheiben gedrückt wird, so ist das Verstellsignal (VS) als elektrischer Strom durch die Regeleinrichtung 12 auszugeben. Dieser elektrische Strom wird einerseits dem Elektromagneten zugeführt und bestimmt die Reibkraft, die auf den Faden ausgeübt wird. Damit ist dieser Strom auch dafür verantwortlich, daß die Fadenzugkraft nur kurzzeitig schwanken kann und - über längere Zeit gemessen - auf den der Regeleinrichtung (R) vorgegebenen Sollwert ausgeregelt wird.
Andererseits wird dieser elektrische Strom aber genutzt zur Ermittlung von sonstigen Fehlern, z.B. den oben erwähnten. Dazu werden der elektrische Strom und der laufende Meßwert - nach Umformung in vergleichbare Signalqualität - miteinander verglichen und festgestellt, ob der laufende Meßwert ein vorgegebenes Toleranzband zum elektrischen Strom verläßt und/oder es wird festgestellt, wann der elektrische Strom ein für ihn vorgegebenes zweites Toleranzband verläßt.If the contact pressure is exerted by a plunger, which is pressed onto the back of one of the disks by an electromagnet, the adjustment signal (VS) is to be output as an electrical current by the
On the other hand, this electrical current is used to determine other errors, such as those mentioned above. For this purpose, the electrical current and the current measured value - after conversion into comparable signal quality - are compared with one another and it is determined whether the current measured value leaves a specified tolerance band for the electrical current and / or it is determined when the electrical current leaves a predefined second tolerance band .
Claims (3)
- Method for monitoring the tensile force of the moving yarn in the texturing zone of a multistation false-twist crimping machine, with the following features:
The tensile force of the yarn is measured continuously or intermittently (measurement signal: U);
an alarm signal (A) is produced at the measuring point if a signal (VS) representing the instantaneous mean value (MU) of the instantaneous measured value leaves a predetermined tolerance range between an upper limit value (GOVS) of the signal (VS) and a lower limit value (GUVS) of the signal (VS) and/or if a differential signal (DU) formed from the signal (VS) and the instantaneous measured value leaves a second predetermined tolerance range between an upper limit value of the differential value (GODU) and a lower limit value of the differential value (GUDU),
and with the characterising feature:
The yarn tension is corrected by converting the yarn tension into an adjusting signal (VS) by means of a time filter and using the adjusting signal (VS) to control the magnitude and/or the division of the frictional force of the false-twisting element into components at the yarn; the adjusting signal (VS) is used as the signal which represents the instantaneous mean value (MU) of the instantaneous measured value for quality monitoring. - Method according to claim 1, characterised in that the speed of the friction twisting element is controlled by the adjusting signal (VS).
- Method according to claim 1, characterised in that the frictional force between the moving surfaces of the friction false-twisting element and the yarn is adjusted by the adjusting signal (VS) in that, when using a friction false-twisting element with two surfaces which are moved with respect to one another and between which the yarn is guided, the contact pressure of the surfaces on the yarn is adjusted or, when using a friction false-twisting element with three spindles and discs which are fixed to the latter and overlap at the centre, the spindle spacing is adjusted.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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DE4002211 | 1990-01-26 | ||
DE4002211 | 1990-01-26 | ||
DE4005074 | 1990-02-17 | ||
DE4005074 | 1990-02-17 |
Publications (2)
Publication Number | Publication Date |
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EP0439183A1 EP0439183A1 (en) | 1991-07-31 |
EP0439183B1 true EP0439183B1 (en) | 1994-04-27 |
Family
ID=25889413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91100967A Expired - Lifetime EP0439183B1 (en) | 1990-01-26 | 1991-01-25 | Method for measuring the traction force of a yarn |
Country Status (5)
Country | Link |
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US (1) | US5146739A (en) |
EP (1) | EP0439183B1 (en) |
DE (1) | DE59101465D1 (en) |
ES (1) | ES2051528T3 (en) |
RU (1) | RU2043630C1 (en) |
Cited By (3)
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EP0495446A1 (en) * | 1991-01-17 | 1992-07-22 | Barmag Ag | Method and apparatus of monitoring the quality of a false twist textured yarn |
GB2263913A (en) * | 1992-02-05 | 1993-08-11 | British Tech Group | False twist texturing |
EP0751244A2 (en) * | 1995-06-30 | 1997-01-02 | B a r m a g AG | Method for controlling yarn tension |
Families Citing this family (12)
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EP0555639B1 (en) * | 1992-02-10 | 1995-04-05 | Barmag Ag | Method for controlling the yarn tension of travelling yarns on a falsetwist texturing machine |
JPH0796730B2 (en) * | 1992-08-31 | 1995-10-18 | 村田機械株式会社 | False twisting device |
EP0604876B1 (en) * | 1992-12-31 | 1999-07-14 | Zellweger Uster, Inc. | Methods for optimally controlling fiber processing machines |
DE4435923B4 (en) * | 1993-10-19 | 2008-01-24 | Oerlikon Textile Gmbh & Co. Kg | Apparatus and method for uniformly texturing a running thread |
JP3147024B2 (en) * | 1997-03-07 | 2001-03-19 | 村田機械株式会社 | False twisting device |
JP3147027B2 (en) * | 1997-03-14 | 2001-03-19 | 村田機械株式会社 | Tension control system in false twisting machine |
JP3331356B2 (en) * | 1998-06-12 | 2002-10-07 | 村田機械株式会社 | Tension control method by fluff controller |
US6163733A (en) | 1999-04-06 | 2000-12-19 | Rubel; Laurence P. | Monitor and malfunction predictor for textile machines |
DE102006040065A1 (en) * | 2006-08-26 | 2008-02-28 | Oerlikon Textile Gmbh & Co. Kg | Procedure for thermal treatment of a running yarn at a twisting machine with workplaces, comprises passing the yarn by a delivery mechanisms to a device for the thermal treatment of the yarn in tension free manner and spooling the yarn |
WO2008151454A1 (en) * | 2007-06-13 | 2008-12-18 | Uster Technologies Ag | Device and method for testing yarn |
CN105274723B (en) * | 2015-10-26 | 2017-03-29 | 武汉纺织大学 | A kind of ultraphotic clean weft-knitting method of many fibrous yarn lines |
DE102017130516A1 (en) * | 2017-12-19 | 2019-06-19 | Maschinenfabrik Rieter Ag | Method for measuring the tension of a thread and device for the deflection of a running thread |
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DE2213147C3 (en) * | 1972-03-17 | 1979-07-19 | Kugelfischer Georg Schaefer & Co, 8720 Schweinfurt | False twist device |
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US4015414A (en) * | 1974-06-12 | 1977-04-05 | The Warner & Swasey Textile Machine Company | Monitored twist control apparatus and method |
US4144700A (en) * | 1976-12-14 | 1979-03-20 | Murata Kikai Kabushiki Kaisha | False twisting apparatus |
JPS5390451A (en) * | 1977-01-21 | 1978-08-09 | Toshiba Machine Co Ltd | Apparatus for falseetwisting |
EP0022743B1 (en) * | 1979-07-14 | 1984-01-04 | b a r m a g Barmer Maschinenfabrik Aktiengesellschaft | Apparatus for false-twisting yarns, and application of this apparatus to make a yarn |
US4424664A (en) * | 1979-07-14 | 1984-01-10 | Barmag Barmer Maschinenfabrik Ag | Friction false twist apparatus |
US4383405A (en) * | 1980-09-08 | 1983-05-17 | Barmag Barmer Maschinenfabrik Ag | Yarn false twisting apparatus and method |
US4445322A (en) * | 1981-02-23 | 1984-05-01 | Milliken Research Corporation | Apparatus to measure yarn tension |
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DE3306594A1 (en) * | 1982-05-21 | 1983-11-24 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Process for false-twist texturing |
DE3245574C2 (en) * | 1982-12-09 | 1985-10-03 | FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt | Method for monitoring the texturing process in a friction false twist unit |
CH662827A5 (en) * | 1983-02-25 | 1987-10-30 | Barmag Barmer Maschf | FALSE TWISTING DEVICE. |
CN1027926C (en) * | 1985-07-03 | 1995-03-15 | 巴马格巴默机器制造股份公司 | Continuous monitoring method for running yarns |
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1991
- 1991-01-24 US US07/645,464 patent/US5146739A/en not_active Expired - Lifetime
- 1991-01-25 RU SU914894261A patent/RU2043630C1/en not_active IP Right Cessation
- 1991-01-25 DE DE59101465T patent/DE59101465D1/en not_active Expired - Fee Related
- 1991-01-25 ES ES91100967T patent/ES2051528T3/en not_active Expired - Lifetime
- 1991-01-25 EP EP91100967A patent/EP0439183B1/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0495446A1 (en) * | 1991-01-17 | 1992-07-22 | Barmag Ag | Method and apparatus of monitoring the quality of a false twist textured yarn |
US5440870A (en) * | 1991-01-17 | 1995-08-15 | Barmag Ag | Method and apparatus of monitoring the quality of a false twist textured yarn |
GB2263913A (en) * | 1992-02-05 | 1993-08-11 | British Tech Group | False twist texturing |
GB2263913B (en) * | 1992-02-05 | 1996-04-03 | British Tech Group | Texturing yarn |
US5802832A (en) * | 1992-02-05 | 1998-09-08 | University Of Manchester Institute Of Science And Technology | Texturing yarn |
EP0751244A2 (en) * | 1995-06-30 | 1997-01-02 | B a r m a g AG | Method for controlling yarn tension |
CN1066500C (en) * | 1995-06-30 | 2001-05-30 | 巴马格股份公司 | Method for regulating tension force of yarn |
EP0751244A3 (en) * | 1995-06-30 | 2001-09-19 | B a r m a g AG | Method for controlling yarn tension |
Also Published As
Publication number | Publication date |
---|---|
RU2043630C1 (en) | 1995-09-10 |
EP0439183A1 (en) | 1991-07-31 |
ES2051528T3 (en) | 1994-06-16 |
DE59101465D1 (en) | 1994-06-01 |
US5146739A (en) | 1992-09-15 |
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