EP2985252A1 - Device for detecting an unwanted thread roll formation - Google Patents

Device for detecting an unwanted thread roll formation Download PDF

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Publication number
EP2985252A1
EP2985252A1 EP15002141.8A EP15002141A EP2985252A1 EP 2985252 A1 EP2985252 A1 EP 2985252A1 EP 15002141 A EP15002141 A EP 15002141A EP 2985252 A1 EP2985252 A1 EP 2985252A1
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EP
European Patent Office
Prior art keywords
roller
support roller
winding
thread
filament winding
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Granted
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EP15002141.8A
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German (de)
French (fr)
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EP2985252B1 (en
Inventor
Franz-Josef Flamm
Dietmar Froesch
Alexander Marx
Peter Schwartz
Michael Stümke
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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 EP2985252A1 publication Critical patent/EP2985252A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/003—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to winding of yarns around rotating cylinders
    • 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 invention relates to a device for detecting unwanted filament winding on a rotating support roller, which is in frictional contact with a package of a winding device of a textile machine and having a rotatably mounted roller in the vicinity of the support roller.
  • the winding devices of a textile machine include, inter alia, a creel for rotatably supporting a package, a drive means for rotating the package, a Fadenchangier adopted for traversing the run-up on the package yarn and a support roller.
  • drive rollers are often used to drive the package on friction.
  • the iridescent guidance of the thread to be wound is then carried out either via a separate and separately driven, or via a thread guide integrated in the drive roller. If the thread guide integrated into the drive roller, this is referred to as grooved drum.
  • the package can be acted upon directly by a motor.
  • the support roller usually has a smooth surface and supports the defined laying of the thread along the spool axis on the package.
  • the DE 199 41 722 A1 discloses an apparatus for monitoring unwanted filament winding based on the opto-electronic principle.
  • an optical fiber assembly is introduced in the drive roller to be monitored. This optical fiber assembly receives the light emitted from a light emitter and transmits it to a light receiver. If a filament winding forms, the light path between the light transmitter and the light receiver is interrupted.
  • sensors in the form of optoelectronic transducers are arranged in the thread guide groove of the thread guide drum, wherein the shrinkage of the thread between a light transmitter and a light receiver is registered as shading and a corresponding electrical output signal is generated.
  • a capacitive transducer can be used, the capacity of which is changed by the running in of the thread between the capacitor plates of the measuring transducer and a corresponding pulse for confirming the traversing movement is generated.
  • a sensor is fixedly arranged at an invariable distance next to the roller and designed to be capable of oscillating such that a structure-borne noise is generated on contact with the filament winding on the sensor.
  • the structure-borne sound generated at the sensor is detected by a sensor means and converted into a signal.
  • a disadvantage of this approach is that the diameter increase of the package is calculated. This entails the danger that systemic inaccuracies creep in.
  • the DE 10 2007 062 631 A1 discloses another device for monitoring an unwanted yarn package.
  • a stationary, rigid and immovable limiting means is arranged in the vicinity of the roller.
  • a thread winding accumulates between roller and limiting means and causes a braking torque of the roller. This braking torque is detected by the control unit and is considered an indication that a filament winding has occurred.
  • the JP H08-59083 A discloses a device for winding filaments. Filaments are simultaneously wound on a plurality of bobbins, the bobbins being driven by means of a contact roller extending over a plurality of work stations. The threads are changed by means of a number of jobs corresponding number of yarn guides.
  • a roller provided with two flattened, extending over the contact roller and limited rotatably mounted roller is arranged parallel to the contact roller. If a filament winding is created, the roller turns slightly and the end of the flat abuts against a lever, which in turn pushes a pin into a switch. This triggers the shutdown of the workplace.
  • a disadvantage of this device is that the roller must be aligned very precisely parallel to the contact roller in order to detect early and at any point a filament winding can.
  • the roller is arranged too close to the contact roller, it may happen that due to vibrations of the coil frame, the roller falsely abuts against the lever and the corresponding job is stopped without a filament winding present.
  • Object of the present invention is therefore to enable a fast and reliable detection of unwanted filament winding on rotating support rollers in textile machines.
  • the roller is formed and arranged at least at one point of the traversing range so that it just in a portion of the coil width remains out of contact with the rotating, unwound support roller, an unwanted filament winding, however immediately set the role in rotational movement, and that each job has a device that sensory detects a rotational movement of the role and forwards to a control device, which then controls the job needs.
  • a fast and reliable detection of emerging filament winding is achieved by a rotatably arranged roller, which runs very smoothly and near the support roller is arranged. So a barely noticeable thread application on the support roller is sufficient to move the roller in motion.
  • the roller does not have to be aligned parallel to the support roller, but it is sufficient for a punctual proximity to the support roller. Even without a parallel arrangement of the entire roller surface so that an accurate detection of a running thread can be ensured.
  • a sensor monitors the movement of the roll. As soon as a rotational movement or a rotation of the roller is detected, a corresponding signal is sent to a, advantageously workstation-own, control device.
  • the winding process can be interrupted so early, before the filament winding is larger.
  • the roller covers only a certain axial portion of the support roller.
  • the roller according to the invention reacts very sensitively and can early indicate a tarnished thread and thus a resulting filament winding.
  • the support roller is formed as a drive roller.
  • the support roller causes the package to rotate by means of friction.
  • the inventive design ensures immediate and reliable detection as soon as a filament winding is created.
  • the backup roller is often formed as a grooved drum.
  • Such a grooved drum has a sweeping thread-like groove over its circumference and displaces the yarn along its axis on the package.
  • the thread guide is operated independently of the support roller.
  • the device for sensory detection of the rotation of the roller advantageously comprises a Hall sensor.
  • Such Hall sensors have the advantage that they are simple in construction and low in manufacturing costs. At the same time they are able to react precisely even with slow movements and thus small changes of the magnetic field, so that also slow movements can be better grasped.
  • FIG. 1 shows in side view and FIG. 2 in front view a winding device.
  • a yarn 2 is a moving yarn guide 4, which is reciprocated by means of a yarn guide rod 5, alternately fed via a drive roller 3 a package 1.
  • the take-up reel 1 driving drive roller 3 is mechanically connected to an electric motor 7 for transmitting a drive torque.
  • the motor 7 is connected via the control line 8 to the control device 9, which takes over both the control of the motor 7 and the evaluation of the detected signals of the sensor 10 for detecting a thread winding on the drive roller 3.
  • a roller 11 is arranged at its periphery parallel to its axis. When an undesirable thread winding is formed on the drive roller 3, some thread layers run up and close the gap between the drive roller 3 and roller 11. Then, the roller 11 begins to rotate. This movement is detected by the sensor 10 and transported as a signal to the control device 9, which then interrupts the winding process.
  • FIG. 3 shows an alternative embodiment of the device according to the invention in a simplified front view.
  • the grooved drum 12 crossed on its outer circumference arranged Faden arrangementsnuten 13 for traversing the take-up reel 14 fed yarn 15.
  • the guided in the Faden Installationsnuten 13 thread 15 is moved from the circumferential grooved drum 12 alternately from one side of the coil to the other side of the coil.
  • the device has a motor 16 which is connected via the control line 17 to the control device 18.
  • the roller 18 is not arranged in parallel and thus forms a gap.
  • the mode of action is according to the first embodiment.
  • a not-to-be-displayed in the front view sensor detects the movement of the roller 11 and passes the signal to the controller 18 on.
  • FIG. 4 shows a further embodiment of the solution according to the invention.
  • the roller 19, which extends over the entire length of the grooved drum 12, is formed in a central region so that it only just remains out of contact with the rotating, unwound grooved drum 12 in this central region.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung zum Detektieren einer unerwünschten Fadenwickelbildung auf einer rotierenden Stützwalze, die mit einer Auflaufspule (1, 14) einer Wickeleinrichtung einer Textilmaschine in Reibkontakt steht und mit einer rotierbar gelagerten Rolle in der Nähe der Stützwalze. Erfindungsgemäß ist die Rolle (6, 11, 19) an mindestens einer Stelle des Changierbereiches so ausgebildet und angeordnet, dass sie in einem Teilbereich der Spulenbreite gerade noch außer Kontakt mit der rotierenden, unbewickelten Stützwalze bleibt, ein unerwünschter Fadenwickel jedoch unmittelbar die Rolle (6, 11, 19) in Drehbewegung versetzt, und jede Arbeitsstelle weist eine Einrichtung auf, die sensorisch eine Drehbewegung der Rolle (6, 11, 19) erfasst und an eine Steuereinrichtung (9, 18) weiterleitet, die daraufhin die Arbeitsstelle bedarfsgerecht ansteuert.The invention relates to a device for detecting an unwanted filament winding on a rotating support roller, which is in frictional contact with a take-up reel (1, 14) of a winding device of a textile machine and with a rotatably mounted roller in the vicinity of the support roller. According to the invention, the roller (6, 11, 19) is formed and arranged at at least one point of the traversing region so that it remains just out of contact with the rotating, unwound support roller in a partial region of the reel width, but an unwanted filament winding directly engages the roller (6 , 11, 19) in rotary motion, and each workstation has a device which sensory detects a rotational movement of the roller (6, 11, 19) and forwards to a control device (9, 18), which then controls the workstation as needed.

Description

Die Erfindung betrifft eine Vorrichtung zum Detektieren einer unerwünschten Fadenwickelbildung auf einer rotierenden Stützwalze, die mit einer Auflaufspule einer Wickeleinrichtung einer Textilmaschine in Reibkontakt steht und mit einer rotierbar gelagerten Rolle in der Nähe der Stützwalze.The invention relates to a device for detecting unwanted filament winding on a rotating support roller, which is in frictional contact with a package of a winding device of a textile machine and having a rotatably mounted roller in the vicinity of the support roller.

Die Wickeleinrichtungen einer Textilmaschine weisen unter anderem jeweils einen Spulenrahmen zum drehbaren Haltern einer Auflaufspule, eine Antriebseinrichtung zum Rotieren der Auflaufspule, eine Fadenchangiereinrichtung zum Traversieren des auf die Auflaufspule auflaufenden Fadens sowie eine Stützwalze auf.The winding devices of a textile machine include, inter alia, a creel for rotatably supporting a package, a drive means for rotating the package, a Fadenchangiereinrichtung for traversing the run-up on the package yarn and a support roller.

Um die Auflaufspule in Rotation zu versetzen, werden häufig Antriebswalzen verwendet, um über Reibung die Auflaufspule anzutreiben. Die changierende Führung des aufzuwickelnden Fadens erfolgt dann entweder über einen gesonderten und separat angetriebenen, oder über einen in die Antriebswalze integrierten Fadenführer. Ist der Fadenführer in die Antriebswalze integriert, wird diese als Nutentrommel bezeichnet.To put the package in rotation, drive rollers are often used to drive the package on friction. The iridescent guidance of the thread to be wound is then carried out either via a separate and separately driven, or via a thread guide integrated in the drive roller. If the thread guide integrated into the drive roller, this is referred to as grooved drum.

Alternativ kann die Auflaufspule auch direkt durch einen Motor beaufschlagt werden. In diesem Fall weist die Stützwalze in der Regel eine glatte Oberfläche auf und unterstützt die definierte Verlegung des Fadens längs der Spulenachse auf die Auflaufspule.Alternatively, the package can be acted upon directly by a motor. In this case, the support roller usually has a smooth surface and supports the defined laying of the thread along the spool axis on the package.

Beim Spulen tritt immer wieder das Problem von Fadenwickeln auf der Stützwalze auf. Diese Fadenwickel entstehen zumeist durch Brüche des Fadens unmittelbar vor dem Auflaufen auf die Auflaufspule. Der Faden läuft daraufhin nicht mehr auf die Auflaufspule, sondern auf die Stützwalze auf und innerhalb kürzester Zeit bildet sich ein unerwünschter Fadenwickel auf der Stützwalze. Ein solcher Fadenwickel kann zu größeren Schäden in der Textilmaschine führen.When spooling occurs again and again the problem of filament winding on the support roller. These filament windings are usually caused by fractures of the thread immediately before emergence on the package. The thread then no longer runs on the package, but on the support roller and within a very short time, an unwanted filament winding forms on the support roller. Such a thread winding can lead to major damage in the textile machine.

Je später ein Fadenwickel erkannt wird, umso schwieriger ist es, diesen zu entfernen. Bei einer als Nutentrommel ausgebildeten Stützwalze ist die Entfernung etwas leichter, da man mit einem Messer oder ähnlichem die Fäden in den Nuten zerschneiden kann. Bei einer glatten Stützwalze hingegen hat man kaum einen Ansatzpunkt dafür und läuft Gefahr, die Oberfläche der Stützwalze zu beschädigen. Alternativ kann der auf die Stützwalze aufgelaufene Faden abgewickelt werden, was allerdings sehr zeitintensiv ist. Entsprechend wichtig ist die frühzeitige Erkennung eines Fadenwickels.The later a filament winding is detected, the more difficult it is to remove it. In a trained as a grooved drum backup roller, the distance is slightly easier because you can cut the threads in the grooves with a knife or the like. With a smooth back-up roller, on the other hand, one hardly has a starting point for it and runs Danger of damaging the surface of the back-up roller. Alternatively, the accumulated on the support roller thread can be handled, which is very time consuming. Accordingly important is the early detection of a filament winding.

Aus dem Stand der Technik sind unterschiedliche Möglichkeiten zur Detektierung derartiger unerwünschter Fadenwickel bekannt.From the prior art different ways to detect such unwanted filament winding are known.

Die DE 199 41 722 A1 offenbart eine Vorrichtung zum Überwachen einer unerwünschten Fadenwickelbildung, die auf dem opto-elektronischen Prinzip beruht. In die zu überwachende Antriebswalze wird eine Lichtleiteranordnung eingebracht. Diese Lichtleiteranordnung empfängt das von einem Lichtsender emittierte Licht und sendet es an einen Lichtempfänger weiter. Bildet sich ein Fadenwickel, wird der Lichtpfad zwischen dem Lichtsender und dem Lichtempfänger unterbrochen.The DE 199 41 722 A1 discloses an apparatus for monitoring unwanted filament winding based on the opto-electronic principle. In the drive roller to be monitored, an optical fiber assembly is introduced. This optical fiber assembly receives the light emitted from a light emitter and transmits it to a light receiver. If a filament winding forms, the light path between the light transmitter and the light receiver is interrupted.

Nachteilig daran ist, dass diese Vorrichtung aufwendig und kostenintensiv ist, da jede einzelne Arbeitsstelle respektive Stützwalze dementsprechend ausgerüstet werden muss. Zudem besteht die Gefahr, dass durch Verschmutzung die Sende- und Empfangsqualität beeinträchtigt wird.The disadvantage of this is that this device is complicated and costly, since each individual job respectively support roller must be equipped accordingly. In addition, there is the danger that the quality of transmission and reception will be impaired by contamination.

Durch die DE 42 25 348 A1 ist es bekannt, bei der Herstellung von Kreuzspulen die Changierung des über eine Fadenführungstrommel zugeführten Fadens zu überwachen. Zu diesem Zweck sind Sensoren in Form opto-elektronischer Messwertaufnehmer in der Fadenführungsnut der Fadenführungstrommel angeordnet, wobei das Einlaufen des Fadens zwischen einem Lichtsender und einem Lichtempfänger als Abschattung registriert und ein entsprechendes elektrisches Ausgangssignal erzeugt wird. Alternativ anstelle der Verwendung eines opto-elektronischen Messwertaufnehmers kann auch ein kapazitiver Messwertaufnehmer zum Einsatz kommen, wobei durch das Einlaufen des Fadens zwischen die Kondensatorplatten des Messwertaufnehmers dessen Kapazität verändert und ein entsprechender Impuls zur Bestätigung der Changierbewegung erzeugt wird.By the DE 42 25 348 A1 It is known to monitor the traversing of fed via a yarn guide drum thread in the manufacture of cheeses. For this purpose, sensors in the form of optoelectronic transducers are arranged in the thread guide groove of the thread guide drum, wherein the shrinkage of the thread between a light transmitter and a light receiver is registered as shading and a corresponding electrical output signal is generated. Alternatively, instead of using an optoelectronic transducer, a capacitive transducer can be used, the capacity of which is changed by the running in of the thread between the capacitor plates of the measuring transducer and a corresponding pulse for confirming the traversing movement is generated.

Diese Vorgehensweise besitzt den Vorteil, dass unerwünschte Fadenwickel früh erkannt werden können. Diese Lösung ist jedoch relativ teuer und bei auftretenden Fehlführungen unsicher und aufgrund der aufwendigen Sensorik fehleranfällig.This approach has the advantage that unwanted filament winding can be detected early. However, this solution is relatively expensive and unsafe in the case of errors occurring and due to the complex sensor error prone.

Eine weiteres Verfahren und eine Vorrichtung zur Erkennung eines Fadenwickels wird durch die DE 101 12 679 A1 offenbart. Ein Fühler ist fest mit unveränderlichem Abstand neben der Walze angeordnet und derart schwingungsfähig ausgebildet, dass bei Kontakt mit dem Fadenwickel an dem Fühler ein Körperschall erzeugt wird. Der an dem Fühler erzeugte Körperschall wird durch ein Sensormittel erfasst und zu einem Signal umgewandelt.Another method and apparatus for detecting a yarn package is by the DE 101 12 679 A1 disclosed. A sensor is fixedly arranged at an invariable distance next to the roller and designed to be capable of oscillating such that a structure-borne noise is generated on contact with the filament winding on the sensor. The structure-borne sound generated at the sensor is detected by a sensor means and converted into a signal.

Diese Lösung ist zwar relativ preiswert, weist jedoch den Nachteil auf, dass es durch Vibrationen mit anderer Ursache zu fehlerhaften Unterbrechungen des Wickelprozesses kommen kann.Although this solution is relatively inexpensive, it has the disadvantage that vibrations due to other causes can lead to erroneous interruptions of the winding process.

Durch die DE 37 03 869 A1 ist es bekannt, bei Nutentrommeln den Zuwachs des Durchmessers der Auflaufspule zu überwachen, um einen unerwünschten Fadenwickel zu erkennen. Dabei wird von der Steuerung des Spulprozesses während des Spulens kontinuierlich der zeitliche Durchmesserzuwachs der Auflaufspule überwacht. Da bei Auftreten eines unerwünschten Fadenwickels auf der Nutentrommel das Garn bzw. der Faden auf die Nutentrommel aufgewickelt wird, erfolgt zu diesem Zeitpunkt kein Durchmesserzuwachs auf der Auflaufspule. Wird dieser Zustand von der Spulstellensteuerung erkannt, wird der Spulprozess unterbrochen.By the DE 37 03 869 A1 It is known to monitor the increase in the diameter of the package in grooved drums to detect an unwanted filament winding. It is monitored by the control of the winding process during winding continuously increases the time diameter of the package. Since the occurrence of an undesirable thread winding on the grooved drum, the yarn or the thread is wound onto the grooved drum, no diameter increase occurs on the package at this time. If this state is detected by the winding unit control, the winding process is interrupted.

Nachteilig an dieser Vorgehensweise ist, dass der Durchmesserzuwachs der Auflaufspule berechnet wird. Dies birgt die Gefahr, dass sich systembedingt Ungenauigkeiten einschleichen.A disadvantage of this approach is that the diameter increase of the package is calculated. This entails the danger that systemic inaccuracies creep in.

Die DE 10 2007 062 631 A1 offenbart eine weitere Vorrichtung zur Überwachung eines unerwünschten Fadenwickels. Ein ortsfestes, starres und unbewegliches Begrenzungsmittel ist in der Nähe der Walze angeordnet. Ein Fadenwickel staut sich zwischen Walze und Begrenzungsmittel und verursacht ein Bremsmoment der Walze. Dieses Bremsmoment wird von der Steuereinheit erfasst und gilt als Hinweis, dass ein Fadenwickel entstanden ist.The DE 10 2007 062 631 A1 discloses another device for monitoring an unwanted yarn package. A stationary, rigid and immovable limiting means is arranged in the vicinity of the roller. A thread winding accumulates between roller and limiting means and causes a braking torque of the roller. This braking torque is detected by the control unit and is considered an indication that a filament winding has occurred.

Nachteilig daran ist, dass der Fadenwickel erst eine gewisse Größe erreichen muss, bis ein Bremsmoment auf die Walze ausgeübt werden kann.The disadvantage of this is that the filament winding must first reach a certain size until a braking torque can be exerted on the roller.

Die JP H08-59083 A offenbart eine Vorrichtung zum Aufwinden von Filamenten. Auf mehreren Spulen werden gleichzeitig Filamente aufgewickelt, wobei die Spulen mittels einer Kontaktwalze, die sich über eine Vielzahl von Arbeitsstellen erstreckt, angetrieben werden. Die Fäden werden mittels einer der Arbeitsstellen entsprechenden Anzahl von Fadenführern changiert. Um einen Fadenwickel auf der Kontaktwalze zu erkennen, ist eine mit zwei Abflachungen versehene, sich über die Kontaktwalze erstreckende und begrenzt rotierbar gelagerte Walze parallel zur Kontaktwalze angeordnet. Entsteht ein Fadenwickel, dreht sich die Walze geringfügig und das Ende der Abflachung stößt gegen einen Hebel, der wiederum einen Stift in einen Schalter drückt. Dies löst das Stillsetzen der Arbeitsstelle aus.The JP H08-59083 A discloses a device for winding filaments. Filaments are simultaneously wound on a plurality of bobbins, the bobbins being driven by means of a contact roller extending over a plurality of work stations. The threads are changed by means of a number of jobs corresponding number of yarn guides. In order to detect a thread winding on the contact roller, a roller provided with two flattened, extending over the contact roller and limited rotatably mounted roller is arranged parallel to the contact roller. If a filament winding is created, the roller turns slightly and the end of the flat abuts against a lever, which in turn pushes a pin into a switch. This triggers the shutdown of the workplace.

Nachteilig an dieser Vorrichtung ist, dass die Walze sehr präzise parallel zu der Kontaktwalze ausgerichtet sein muss, um frühzeitig und an beliebiger Stelle einen Fadenwickel detektieren zu können. Wird die Walze aber zu nah an der Kontaktwalze angeordnet, kann es passieren, dass aufgrund von Schwingungen des Spulenrahmens die Walze fälschlicherweise gegen den Hebel stößt und die entsprechende Arbeitsstelle stillgesetzt wird, ohne das ein Fadenwickel vorliegt. Aufgabe der vorliegenden Erfindung ist es daher, eine schnelle und sichere Erkennung von unerwünschten Fadenwickeln auf rotierenden Stützwalzen in Textilmaschinen zu ermöglichen.A disadvantage of this device is that the roller must be aligned very precisely parallel to the contact roller in order to detect early and at any point a filament winding can. However, if the roller is arranged too close to the contact roller, it may happen that due to vibrations of the coil frame, the roller falsely abuts against the lever and the corresponding job is stopped without a filament winding present. Object of the present invention is therefore to enable a fast and reliable detection of unwanted filament winding on rotating support rollers in textile machines.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Zur Lösung der Aufgabe ist, gemäß Anspruch 1, vorgesehen, dass die Rolle an mindestens einer Stelle des Changierbereiches so ausgebildet und angeordnet ist, dass sie in einem Teilbereich der Spulenbreite gerade noch außer Kontakt mit der rotierenden, unbewickelten Stützwalze bleibt, ein unerwünschter Fadenwickel jedoch unmittelbar die Rolle in Drehbewegung versetzt, und dass jede Arbeitsstelle eine Einrichtung aufweist, die sensorisch eine Drehbewegung der Rolle erfasst und an eine Steuereinrichtung weiterleitet, die daraufhin die Arbeitsstelle bedarfsgerecht ansteuert.To achieve the object, according to claim 1, provided that the roller is formed and arranged at least at one point of the traversing range so that it just in a portion of the coil width remains out of contact with the rotating, unwound support roller, an unwanted filament winding, however immediately set the role in rotational movement, and that each job has a device that sensory detects a rotational movement of the role and forwards to a control device, which then controls the job needs.

Eine schnelle und zuverlässige Detektion entstehender Fadenwickel wird durch eine rotierbar angeordnete Rolle erreicht, die sehr leichtgängig läuft und nahe der Stützwalze angeordnet ist. So reicht ein kaum spürbarer Fadenauftrag auf der Stützwalze aus, um die Rolle in Bewegung zu versetzen.A fast and reliable detection of emerging filament winding is achieved by a rotatably arranged roller, which runs very smoothly and near the support roller is arranged. So a barely noticeable thread application on the support roller is sufficient to move the roller in motion.

Dabei muss die Rolle nicht parallel zur Stützwalze ausgerichtet sein, sondern es reicht eine punktuelle Nähe zur Stützwalze aus. Auch ohne eine parallele Anordnung der gesamten Rollenoberfläche kann damit eine exakte Erfassung eines auflaufenden Fadens gewährleistet werden.The roller does not have to be aligned parallel to the support roller, but it is sufficient for a punctual proximity to the support roller. Even without a parallel arrangement of the entire roller surface so that an accurate detection of a running thread can be ensured.

Sobald die ersten fehlerhaft aufgewickelten Fadenlagen den Spalt zwischen Stützwalze und Rolle schließen, gerät die Rolle in Bewegung und zeigt damit frühzeitig den Aufbau eines Fadenwickels an.As soon as the first faultily wound thread layers close the gap between the back-up roll and the roll, the roll starts to move, thus indicating early on the structure of a thread roll.

Mit einem Sensor wird die Bewegung der Rolle überwacht. Sobald eine Drehbewegung respektive ein Rotieren der Rolle detektiert wird, wird ein entsprechendes Signal an eine, vorteilhafterweise arbeitsstelleneigene, Steuereinrichtung gesendet. Der Wickelprozess kann so frühzeitig unterbrochen werden, bevor der Fadenwickel größer wird.A sensor monitors the movement of the roll. As soon as a rotational movement or a rotation of the roller is detected, a corresponding signal is sent to a, advantageously workstation-own, control device. The winding process can be interrupted so early, before the filament winding is larger.

In einer bevorzugten Ausführungsform, wie in Anspruch 2 beschrieben, deckt die Rolle nur einen bestimmten Axialabschnitt der Stützwalze ab.In a preferred embodiment, as described in claim 2, the roller covers only a certain axial portion of the support roller.

Durch die geringere Masse einer Rolle, die nur einen Teil der Stützwalze abdeckt, muss auch nur ein geringerer Widerstand überwunden werden, um die Rolle rotieren zu lassen. Dadurch reagiert die erfindungsgemäße Rolle sehr sensibel und kann frühzeitig einen auflaufenden Faden und somit einen entstehenden Fadenwickel anzeigen.Due to the lower mass of a roll, which covers only a part of the support roller, only a lower resistance must be overcome in order to rotate the roller. As a result, the roller according to the invention reacts very sensitively and can early indicate a tarnished thread and thus a resulting filament winding.

Vorteilhafterweise ist, gemäß Anspruch 3, die Stützwalze als Antriebswalze ausgebildet.Advantageously, according to claim 3, the support roller is formed as a drive roller.

Es ist in der Praxis in der Regel so, dass die Stützwalze mittels Friktion die Auflaufspule in Rotation versetzt. Dabei gewährleistet die erfindungsgemäße Ausgestaltung eine unmittelbare und zuverlässige Erkennung, sobald ein Fadenwickel entsteht.In practice, it is generally the case that the support roller causes the package to rotate by means of friction. The inventive design ensures immediate and reliable detection as soon as a filament winding is created.

Wie in Anspruch 4 beschrieben, ist die Stützwalze häufig als Nutentrommel ausgebildet.As described in claim 4, the backup roller is often formed as a grooved drum.

Eine derartige Nutentrommel weist eine kehrgewindeartige Nut über ihren Umfang auf und verlegt den Faden längs ihrer Achse auf die Auflaufspule.Such a grooved drum has a sweeping thread-like groove over its circumference and displaces the yarn along its axis on the package.

Bei dieser Ausführung reicht es aus, wenn die Rolle eine oder mehrere Kreuzungsstellen der Nuten abdeckt, da der Fadenwickel insbesondere an diesen Stellen auftritt.In this embodiment, it is sufficient if the role covers one or more intersections of the grooves, since the filament winding occurs especially at these points.

Gemäß Anspruch 5 wird alternativ der Fadenführer unabhängig von der Stützwalze betrieben.According to claim 5, alternatively, the thread guide is operated independently of the support roller.

Es ist vorteilhaft, dass nach einem Fadenbruch und Ausbilden eines detektierbaren Fadenwickels nur wenig Fadenauftrag auf die Stützwalze für die Detektion nötig ist. Dadurch wird vermieden, dass der Faden zu lange auf die Stützwalze weiter verlegt wird, bis ein so ausreichend großer Fadenwickel entsteht, der beispielsweise ein Bremsmoment ausüben kann, denn bei einem separaten Fadenführer wird die Detektion eines entstehenden Fadenwickels erschwert durch die Tatsache, dass der Zuwachs an Fadenlagen nur sehr gering ist, da der Fadenführer nach einem Fadenbruch und während der Faden auf die Stützwalze aufläuft, kontinuierlich weiterchangiert, während bei einer Nutentrommel die Changierung in der Regel aussetzt.It is advantageous that after a yarn breakage and forming a detectable yarn package only a small amount of yarn application to the support roller for the detection is necessary. This avoids that the thread is laid too long on the support roller until such a sufficiently large filament winding is created, which can exert a braking torque, for example, because with a separate thread guide the detection of a resulting filament winding is hampered by the fact that the increase At thread layers is very low, since the yarn guide runs after a yarn breakage and while the thread runs on the support roller, continuously weiterchangiert, while suspended in a grooved drum traversing in the rule.

Daher reicht es in diesem Falle aus, wenn die Rolle nur einen beliebigen Teil der Changierbreite abdeckt.Therefore, it is sufficient in this case, if the role covers only an arbitrary part of the traversing width.

Nach Anspruch 6 umfasst die Einrichtung zur sensorischen Erfassung der Rotation der Rolle vorteilhaft einen Hallsensor.According to claim 6, the device for sensory detection of the rotation of the roller advantageously comprises a Hall sensor.

Derartige Hallsensoren weisen den Vorteil auf, dass sie einfach im Aufbau und gering in den Herstellungskosten sind. Gleichzeitig sind sie in der Lage, auch bei langsamen Bewegungen und somit geringen Änderungen des Magnetfeldes präzise zu reagieren, so dass auch langsame Bewegungen besser erfasst werden können.Such Hall sensors have the advantage that they are simple in construction and low in manufacturing costs. At the same time they are able to react precisely even with slow movements and thus small changes of the magnetic field, so that also slow movements can be better grasped.

Selbstverständlich ist es im Rahmen dieser Erfindung auch denkbar, andere Sensoren zu verwenden, der Hallsensor ist an dieser Stelle lediglich exemplarisch erwähnt.Of course, it is within the scope of this invention also conceivable to use other sensors, the Hall sensor is mentioned at this point only by way of example.

Die vorliegende Erfindung wird nachfolgend anhand einer schematisiert dargestellten Arbeitsstelle einer Textilmaschine erläutert.The present invention is explained below with reference to a schematically illustrated workstation of a textile machine.

Es zeigen:

Figur 1
eine stark vereinfachte Seitenansicht einer Wickeleinrichtung mit einer erfindungsgemäßen Vorrichtung;
Figur 2
eine vereinfachte Vorderansicht einer Wickeleinrichtung mit einer erfindungsgemäßen Vorrichtung;
Figur 3
eine vereinfachte Vorderansicht einer Wickeleinrichtung mit einer alternativen erfindungsgemäßen Vorrichtung;
Figur 4
eine weitere, alternative Ausführungsform der erfindungsgemäßen Vorrichtung.
Show it:
FIG. 1
a greatly simplified side view of a winding device with a device according to the invention;
FIG. 2
a simplified front view of a winding device with a device according to the invention;
FIG. 3
a simplified front view of a winding device with an alternative device according to the invention;
FIG. 4
a further alternative embodiment of the device according to the invention.

Die Figur 1 zeigt in Seitenansicht und Figur 2 in Vorderansicht eine Wickeleinrichtung. Ein Faden 2 wird einem beweglichen Fadenführer 4, der mittels einer Fadenführerstange 5 hin- und herbewegt wird, über eine Antriebswalze 3 einer Auflaufspule 1 changierend zugeführt. Die die Auflaufspule 1 antreibende Antriebswalze 3, ist mit einem elektrischen Motor 7 zur Übertragung eines Antriebsmomentes mechanisch verbunden. Der Motor 7 ist über die Steuerleitung 8 mit der Steuereinrichtung 9 verbunden, die sowohl die Regelung des Motors 7 als auch die Auswertung der detektierten Signale des Sensors 10 zur Erkennung eines Fadenwickels auf der Antriebswalze 3 übernimmt.The FIG. 1 shows in side view and FIG. 2 in front view a winding device. A yarn 2 is a moving yarn guide 4, which is reciprocated by means of a yarn guide rod 5, alternately fed via a drive roller 3 a package 1. The take-up reel 1 driving drive roller 3 is mechanically connected to an electric motor 7 for transmitting a drive torque. The motor 7 is connected via the control line 8 to the control device 9, which takes over both the control of the motor 7 and the evaluation of the detected signals of the sensor 10 for detecting a thread winding on the drive roller 3.

Über einem Teilabschnitt unterhalb der Antriebswalze 3 ist an ihrem Umfang parallel zu ihrer Achse eine Rolle 11 angeordnet. Wenn auf der Antriebswalze 3 ein unerwünschter Fadenwickel entsteht, laufen einige Fadenlagen auf und schließen den Spalt zwischen Antriebswalze 3 und Rolle 11. Daraufhin beginnt die Rolle 11 zu rotieren. Diese Bewegung wird von dem Sensor 10 detektiert und als Signal an die Steuereinrichtung 9 transportiert, die daraufhin den Wickelprozess unterbricht.About a portion below the drive roller 3, a roller 11 is arranged at its periphery parallel to its axis. When an undesirable thread winding is formed on the drive roller 3, some thread layers run up and close the gap between the drive roller 3 and roller 11. Then, the roller 11 begins to rotate. This movement is detected by the sensor 10 and transported as a signal to the control device 9, which then interrupts the winding process.

Figur 3 zeigt eine alternative Ausgestaltung der erfindungsgemäßen Vorrichtung in vereinfachter Vorderansicht. In diesem Fall weist die Nutentrommel 12 auf ihrem Außenumfang gekreuzt angeordnete Fadenführungsnuten 13 zum Changieren des der Auflaufspule 14 zugeführten Fadens 15 auf. Der in den Fadenführungsnuten 13 geführte Faden 15 wird von der umlaufenden Nutentrommel 12 abwechselnd von einer Spulenseite auf die andere Spulenseite verlegt. Die Vorrichtung weist einen Motor 16 auf, der über die Steuerleitung 17 mit der Steuereinrichtung 18 verbunden ist. In unmittelbarer Nähe zur Nutentrommel 12 ist die Rolle 18 nicht parallel angeordnet und bildet so einen Spalt. Die Wirkungsweise ist dabei entsprechend des ersten Ausführungsbeispiels. Ein in der Vorderansicht nicht darzustellender Sensor erfasst die Bewegung der Rolle 11 und leitet das Signal an die Steuereinrichtung 18 weiter. FIG. 3 shows an alternative embodiment of the device according to the invention in a simplified front view. In this case, the grooved drum 12 crossed on its outer circumference arranged Fadenführungsnuten 13 for traversing the take-up reel 14 fed yarn 15. The guided in the Fadenführungsnuten 13 thread 15 is moved from the circumferential grooved drum 12 alternately from one side of the coil to the other side of the coil. The device has a motor 16 which is connected via the control line 17 to the control device 18. In the immediate vicinity of the grooved drum 12, the roller 18 is not arranged in parallel and thus forms a gap. The mode of action is according to the first embodiment. A not-to-be-displayed in the front view sensor detects the movement of the roller 11 and passes the signal to the controller 18 on.

Figur 4 zeigt eine weitere Ausführungsform der erfindungsgemäßen Lösung. Die Rolle 19, die sich über die gesamte Länge der Nutentrommel 12 erstreckt, ist in einem mittleren Bereich so ausgebildet, dass sie nur in diesem mittleren Bereich gerade noch außer Kontakt mit der rotierenden, unbewickelten Nutentrommel 12 bleibt. FIG. 4 shows a further embodiment of the solution according to the invention. The roller 19, which extends over the entire length of the grooved drum 12, is formed in a central region so that it only just remains out of contact with the rotating, unwound grooved drum 12 in this central region.

Claims (6)

Vorrichtung zum Detektieren einer unerwünschten Fadenwickelbildung auf einer rotierenden Stützwalze, die mit einer Auflaufspule (1, 14) einer Wickeleinrichtung einer Textilmaschine in Reibkontakt steht, mit einer rotierbar gelagerten Rolle in der Nähe der Stützwalze,
dadurch gekennzeichnet,
dass die Rolle (6, 11, 19) an mindestens einer Stelle des Changierbereiches so ausgebildet und angeordnet ist, dass sie in einem Teilbereich der Spulenbreite gerade noch außer Kontakt mit der rotierenden, unbewickelten Stützwalze bleibt, ein unerwünschter Fadenwickel jedoch unmittelbar die Rolle (6, 11, 19) in Drehbewegung versetzt, unddass jede Arbeitsstelle eine Einrichtung aufweist, die sensorisch eine Drehbewegung der Rolle (6, 11, 19) erfasst und an eine Steuereinrichtung (9, 18) weiterleitet, die daraufhin die Arbeitsstelle bedarfsgerecht ansteuert.Device for detecting unwanted filament winding on a rotating support roller in frictional contact with a take-up spool (1, 14) of a winding device of a textile machine, with a rotatably mounted roller in the vicinity of the support roller,
characterized,
that the roller (6, 11, 19) at least one point of the traversing portion is configured and arranged so that they just out of contact with the rotating, non-wound backing roll remains in a portion of the coil width, an undesired thread winding but immediately the roller (6 , 11, 19), and each work station comprises means sensory to detecting rotation of the roller (6, 11, 19) and relaying it to a control device (9, 18) which then controls the workstation as needed. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rolle (6, 11, 19) nur einen bestimmten Axialabschnitt abdeckt.Apparatus according to claim 1, characterized in that the roller (6, 11, 19) covers only a certain axial portion. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Stützwalze als Antriebswalze (3) ausgebildet ist.Apparatus according to claim 1, characterized in that the support roller is designed as a drive roller (3). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Stützwalze als Nutentrommel (12) ausgebildet ist.Apparatus according to claim 1, characterized in that the support roller is formed as a grooved drum (12). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Fadenführer (4) unabhängig von der Stützwalze betrieben wird.Apparatus according to claim 3, characterized in that the yarn guide (4) is operated independently of the support roller. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Einrichtung zur sensorischen Erfassung der Rotation der Rolle (6, 11, 19) einen Hallsensor (10) umfasst.Apparatus according to claim 1, characterized in that the means for sensory detection of the rotation of the roller (6, 11, 19) comprises a Hall sensor (10).
EP15002141.8A 2014-08-12 2015-07-17 Device for detecting an unwanted thread roll formation Not-in-force EP2985252B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014011937.8A DE102014011937A1 (en) 2014-08-12 2014-08-12 Device for detecting unwanted filament winding

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TR (1) TR201819861T4 (en)

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US3169716A (en) * 1958-06-11 1965-02-16 Reiners Walter Drum-wrap and thread-break lockout for winding machines
DE3623678A1 (en) * 1986-07-12 1988-01-28 Sucker & Franz Mueller Gmbh Device for detecting a thread lap
DE3703869A1 (en) 1987-02-07 1988-08-18 Schlafhorst & Co W METHOD FOR MONITORING AND / OR CONTROLLING THE WINDING PROCESS AND SPOOL FOR CARRYING OUT THE METHOD
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JPH0859083A (en) 1994-08-17 1996-03-05 Murata Mach Ltd Detector or yarn winding to touch roller in winder
DE19941722A1 (en) 1999-09-02 2001-03-08 Schlafhorst & Co W Bobbin winder for cross wound bobbins has an optic fiber monitor at the yarn guide roller to carry light between a transmitter and receiver with an interruption if yarn has wound itself around the roller
DE10112679A1 (en) 2000-03-28 2001-10-04 Barmag Barmer Maschf System for the detection of clinging wound yarn around a roller has a feeler which is oscillated by any yarn to generate a noise which is registered and converted into electrical voltage signals
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Publication number Publication date
EP2985252B1 (en) 2018-10-17
DE102014011937A1 (en) 2016-02-18
JP2016040200A (en) 2016-03-24
CN105366437A (en) 2016-03-02
TR201819861T4 (en) 2019-01-21
CN105366437B (en) 2018-03-27
JP6645767B2 (en) 2020-02-14

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