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EP1238937A1 - Method and device for clearing yarn by cutting out defects - Google Patents

Method and device for clearing yarn by cutting out defects Download PDF

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Publication number
EP1238937A1
EP1238937A1 EP01104536A EP01104536A EP1238937A1 EP 1238937 A1 EP1238937 A1 EP 1238937A1 EP 01104536 A EP01104536 A EP 01104536A EP 01104536 A EP01104536 A EP 01104536A EP 1238937 A1 EP1238937 A1 EP 1238937A1
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EP
European Patent Office
Prior art keywords
yarn
defects
accumulation
cut out
detected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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EP01104536A
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German (de)
French (fr)
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EP1238937B1 (en
Inventor
Heinrich Scherer
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Loepfe AG Gebrueder
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Loepfe AG Gebrueder
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Application filed by Loepfe AG Gebrueder filed Critical Loepfe AG Gebrueder
Priority to DE50103313T priority Critical patent/DE50103313D1/en
Priority to EP01104536A priority patent/EP1238937B1/en
Priority to CZ20020752A priority patent/CZ301260B6/en
Priority to JP2002056833A priority patent/JP4194784B2/en
Publication of EP1238937A1 publication Critical patent/EP1238937A1/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
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for cleaning a yarn from defects according to Preamble of claim 1 and a yarn cleaner Execution of the procedure.
  • the yarn is usually passed a measuring head, which is able to detect the defects. If an intolerable fault is found, then it is cut out. The yarn ends are back spliced and yarn cleaning continues. On corresponding procedure is e.g. in CH 680 803.
  • the thread must be removed to remove a defect stopped, which leads to a loss of time. Furthermore affects the splice when removing a fault occurs, the quality of the yarn. This leads to an accumulation of defects the cleaning process is extremely slow and many Splice points arise. In addition, the winding quality impaired.
  • a cluster when a cluster is detected suppresses cutting out of defects as long as until the cluster is over or until a predetermined maximum length of yarn has passed the measuring head. Thereby it ensures that a whole "cluster" of defects can be recorded.
  • the maximum length is included e.g. given by the length that is automatically removed can be.
  • the method according to the invention is preferred when winding yarn from one or more cops placed on a package.
  • a yarn cleaner according to the invention can e.g. be arranged at a rewinding station, as shown in Fig. 1 is shown.
  • the yarn 1 is made by one or several cops 2 rewound onto a package 3. there it passes through a yarn cleaner 4.
  • the yarn cleaner 4 comprises a measuring head 5, in which one or more parameters of the yarn are measured such as the yarn thickness or the presence of Impurities.
  • Appropriate devices are the specialist e.g. known from EP 553 446.
  • the signals from the measuring head 5 become one Control 6 fed where they are analyzed.
  • the controller 6 configured to discrete, to recognize individual imperfections in yarn 1.
  • a flaw is e.g. a thickening of the yarn in the form of a Nisse considered, in which the yarn diameter is one exceeds the predetermined limit, or a thin spot or a change in the optical reflection properties of the yarn.
  • the controller 6 can be between tolerable and intolerable imperfections, whereby e.g. is specified by the machine operator in which If the measured parameters are an intolerable defect describe. In the following, unless otherwise noted, under the term "fault" an intolerable Understood fault that removed from the yarn 1 must become.
  • the cheese 3 is stopped.
  • the yarn is rewound, the missing part removed and the yarn spliced again.
  • the purpose is a cutting and splicing device 7 intended.
  • the yarn cleaner has 4 two states. In a first state (normal mode) he works like a conventional yarn cleaner. In a second state (cluster mode) it works in a modified way.
  • the yarn cleaner 4 if it detects a "cluster end", i.e. when he no longer accumulates defects finds. This can in turn be the number of defects measured per unit length, or their distances. As soon as the number of defects per unit length one Falls below the limit (e.g. less than three defects on ten meters of yarn) or as soon as the distances between each other following defects larger than a given one Value (e.g. greater than three meters) takes the Control 6 indicates that the cluster has ended. The yarn cleaner 4 goes into normal mode.
  • Step 22 checked whether an (intolerable) Fault has been detected. Is that the case, it is checked in step 24 whether there is a cluster start, e.g. by using one of the above criteria becomes.
  • the yarn cleaner is after this Check in cluster mode (step 26), so there is a cluster of missing parts and an immediate cutting out the defect is temporarily suppressed.
  • the thread cleaner is at step 26 not in cluster mode, the defect is an isolated one Defect.
  • the controller 6 initiates immediately a cleaner cut (step 28).
  • the yarn 1 is cut in the area of the measuring head 5, the cheese 3 is stopped.
  • the yarn end is in the cutting and Retrieved splicer 7, there it will be the Cut missing piece of yarn and that Yarn is spliced. Then the rewinding operation of Again.
  • step 30 If there is no defect in step 22, then is checked in step 30 whether the yarn cleaner 4 in Cluster mode. If this is not the case, it is the yarn 1 is perfect and the execution goes to the point 20 back.
  • the yarn cleaner 4 is in step 30 in cluster mode, it is checked whether a cluster end is present (step 32).
  • One of the criteria mentioned above can be used.
  • the yarn cleaner 4 is after this Check no longer in cluster mode (step 34), so was one end of the cluster was detected. Now the cluster can removed from the yarn (step 36). To do this basically the same steps as in step 28 performed, the yarn 1, however, rewound as far is that the whole cluster will be cut out can. For this purpose, the controller 6 stores each the position of the cluster start.
  • the thread cleaner 4 is at step 34 still in cluster mode, so in one step 38 checked whether the length of the present cluster is one exceeds the specified maximum length.
  • This maximum length is given by the length by which the yarn 1 is maximal can be rewound (e.g. 80 meters). exceeds the length of a cluster this maximum length, so becomes the part of the cluster that already has the measuring head 5 happened, cut out (step 40).
  • a warning can be issued and if necessary the process can be stopped so that the machine operator if necessary, can replace the cops 2.

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

Abstract

In a process to remove spinning faults from textile yarn (1) the faults are detected by a sensor and cut out, the good ends being spliced. When a sequence of faults occurs, the initial sequence of faulty material is not immediately cut out, but accumulated and then cut out in a single length. Also claimed is commensurate a yarn-cleaning assembly with a sensor head (8), a cutting and splice unit (7) with a control unit (6). The process has several yarn-cleaning stations. At a first cleaning station the faulty yarn section is removed at once. At a second cleaning station the faulty yarn is not immediately removed. If a cluster of faults is detected, operation of the two stations is synchronised to form a single operation. The system activates the cutting operation using the number of faults detected per unit length of yarn.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Reinigung eines Garns von Fehlstellen gemäss Oberbegriff von Anspruch 1 sowie einen Garnreiniger zur Durchführung des Verfahrens.The present invention relates to a method for cleaning a yarn from defects according to Preamble of claim 1 and a yarn cleaner Execution of the procedure.

Zur Reinigung eines Garns von Fehlstellen, wie z.B. Dickstellen, Dünnstellen und Fremdpartikeln, wird das Garn in der Regel an einem Messkopf vorbei geführt, der in der Lage ist, die Fehlstellen zu detektieren. Wird eine untolerierbare Fehlstelle festgestellt, so wird sie herausgeschnitten. Die Garnenden werden wieder verspleisst und die Garnreinigung wird fortgesetzt. Ein entsprechendes Verfahren ist z.B. in CH 680 803 beschrieben.To clean a yarn from defects, such as. Thick spots, thin spots and foreign particles, the yarn is usually passed a measuring head, which is able to detect the defects. If an intolerable fault is found, then it is cut out. The yarn ends are back spliced and yarn cleaning continues. On corresponding procedure is e.g. in CH 680 803.

Zum Entfernen einer Fehlstelle muss das Garn angehalten werden, was zu einem Zeitverlust führt. Ausserdem beeinträchtigt die Spleissstelle, die beim entfernen einer Fehlstelle entsteht, die Qualität des Garns. Dies führt dazu, dass bei einer Häufung von Fehlstellen der Reinigungsprozess äusserst langsam wird und viele Spleissstellen entstehen. Ausserdem wird die Wickelqualität beeinträchtigt.The thread must be removed to remove a defect stopped, which leads to a loss of time. Furthermore affects the splice when removing a fault occurs, the quality of the yarn. This leads to an accumulation of defects the cleaning process is extremely slow and many Splice points arise. In addition, the winding quality impaired.

Es stellt sich deshalb die Aufgabe, ein Reinigungsverfahren bereitzustellen, welches diese Nachteile zumindest teilweise umgeht. Diese Aufgabe wird durch die unabhängigen Patentansprüche gelöstIt is therefore the task of a cleaning process provide which has these disadvantages at least partially circumvents. This task is accomplished by the independent claims solved

Erfindungsgemäss wird also bei Detektion einer Häufung von Fehlstellen ein unmittelbares Herausschneiden einzelner Fehlstellen unterdrückt, um sodann mehrere Fehlstellen gemeinsam herauszuschneiden. Dadurch wird einerseits die Zahl der Spleissstellen reduziert, andererseits die Verarbeitungsgeschwindigkeit erhöht, da mehrere Fehlstellen gleichzeitig in einem einzigen Reinigungsschritt herausgeschnitten werden. According to the invention, one is therefore upon detection Accumulation of defects immediately cut out suppressed individual defects, then to cut out several missing parts together. Thereby the number of splices is reduced, on the other hand, the processing speed increases because multiple defects at the same time in a single cleaning step be cut out.

Vorzugsweise wird bei Detektion einer Häufung von Fehlstellen das Herausschneiden so lange unterdrückt, bis die Häufung vorüber ist oder bis eine vorgegebene Maximallänge von Garn den Messkopf passiert hat. Dadurch wird sichergestellt, dass ein ganzer "Cluster" von Fehlstellen erfasst werden kann. Die Maximallänge ist dabei z.B. gegeben durch diejenige Länge, die automatisch entfernt werden kann.Preferably, when a cluster is detected suppresses cutting out of defects as long as until the cluster is over or until a predetermined maximum length of yarn has passed the measuring head. Thereby it ensures that a whole "cluster" of defects can be recorded. The maximum length is included e.g. given by the length that is automatically removed can be.

Das erfindungsgemässe Verfahren wird vorzugsweise beim Umspulen von Garn von einem oder mehreren Cops auf eine Kreuzspule eingesetzt.The method according to the invention is preferred when winding yarn from one or more cops placed on a package.

Weitere bevorzugte Ausführungen und Aspekte der Erfindung ergeben sich aus den abhängigen Ansprüchen sowie der nun folgenden Beschreibung anhand der Figuren. Dabei zeigen:

  • Fig. 1 schematisch den Aufbau einer Umspulstation mit einer Ausführung des Garnreinigers,
  • Fig. 2 ein schematisches Zustandsdiagramm des Garnreinigers und
  • Fig. 3 ein vereinfachtes Flussdiagramm des Reinigungsalgorithmus.
    • Further preferred embodiments and aspects of the invention result from the dependent claims and the following description based on the figures. Show:
  • 1 schematically shows the construction of a rewinding station with an embodiment of the yarn cleaner,
  • Fig. 2 is a schematic state diagram of the yarn cleaner and
  • Fig. 3 is a simplified flow diagram of the cleaning algorithm.

    • Ein erfindungsgemässer Garnreiniger kann z.B. an einer Umspulstation angeordnet sein, wie dies in Fig. 1 dargestellt wird. Hier wird das Garn 1 von einem oder mehreren Cops 2 auf eine Kreuzspule 3 umgespult. Dabei durchläuft es einen Garnreiniger 4.A yarn cleaner according to the invention can e.g. be arranged at a rewinding station, as shown in Fig. 1 is shown. Here the yarn 1 is made by one or several cops 2 rewound onto a package 3. there it passes through a yarn cleaner 4.

    Der Garnreiniger 4 umfasst einen Messkopf 5, in welchem ein oder mehrere Parameter des Garns gemessen werden, wie z.B. die Garndicke oder das Vorhandensein von Verunreinigungen. Entsprechende Geräte sind dem Fachmann z.B. aus EP 553 446 bekannt.The yarn cleaner 4 comprises a measuring head 5, in which one or more parameters of the yarn are measured such as the yarn thickness or the presence of Impurities. Appropriate devices are the specialist e.g. known from EP 553 446.

    Die Signale des Messkopfs 5 werden einer Steuerung 6 zugeführt, wo sie analysiert werden. Insbesondere ist die Steuerung 6 ausgestaltet, um diskrete, einzelne Fehlstellen im Garn 1 zu erkennen. Als Fehlstelle wird dabei z.B. eine Verdickung des Garns in Form einer Nisse betrachtet, bei welcher der Garndurchmesser einen vorgegebenen Grenzwert übersteigt, oder eine Dünnstelle oder ein Wechsel der optischen Reflektionseigenschaften des Garns.The signals from the measuring head 5 become one Control 6 fed where they are analyzed. In particular is the controller 6 configured to discrete, to recognize individual imperfections in yarn 1. As a flaw is e.g. a thickening of the yarn in the form of a Nisse considered, in which the yarn diameter is one exceeds the predetermined limit, or a thin spot or a change in the optical reflection properties of the yarn.

    Die Steuerung 6 kann dabei zwischen tolerierbaren und untolerierbaren Fehlstellen unterscheiden, wobei z.B. vom Maschinenführer vorgegeben wird, in welchen Fällen die gemessenen Parameter eine untolerierbare Fehlstelle beschreiben. Im folgenden wird, soweit nicht anders vermerkt, unter dem Begriff "Fehlstelle" eine untolerierbare Fehlstelle verstanden, die aus dem Garn 1 entfernt werden muss.The controller 6 can be between tolerable and intolerable imperfections, whereby e.g. is specified by the machine operator in which If the measured parameters are an intolerable defect describe. In the following, unless otherwise noted, under the term "fault" an intolerable Understood fault that removed from the yarn 1 must become.

    Zum Entfernen einer einzelnen Fehlstelle wird das Garn beim Messkopf 5 geschnitten. Die Kreuzspule 3 wird angehalten. Das Garn wird zurückgespult, die Fehlstelle entfernt und das Garn wieder verspleisst. Für diesen Zweck ist eine Schneide- und Spleissvorrichtung 7 vorgesehen.To remove a single defect cut the yarn at measuring head 5. The cheese 3 is stopped. The yarn is rewound, the missing part removed and the yarn spliced again. For this The purpose is a cutting and splicing device 7 intended.

    In konventionellen Garnreinigern wird bei Detektion einer Fehlstelle unverzüglich ein Reinigerschnitt eingeleitet, d.h. jede Fehlstelle wird normalerweise einzeln herausgeschnitten. Der vorliegende Garnreiniger geht in differenzierterer Weise vor. Insbesondere ist er in der Lage, Häufungen ("Cluster") von Fehlstellen zu erkennen, und er versucht, möglichst alle Fehlstellen eines solchen Clusters mit einem einzigen Reinigerschnitt zu entfernen.In conventional yarn cleaners is used for detection a cleaner cut immediately if there is a defect initiated, i.e. each defect is usually individual cut out. The present yarn cleaner works in a more differentiated way. In particular, he is in able to identify clusters of defects, and he tries to find all the missing parts of one such clusters with a single cleaner cut remove.

    Wie in Fig. 2 dargestellt, besitzt der Garnreiniger 4 zwei Zustände. In einem ersten Zustand (Normal-Modus) arbeitet er wie ein konventioneller Garnreiniger. In einem zweiten Zustand (Cluster-Modus) arbeitet er in modifizierter Weise.As shown in Fig. 2, the yarn cleaner has 4 two states. In a first state (normal mode) he works like a conventional yarn cleaner. In a second state (cluster mode) it works in a modified way.

    Vom Normal- in den Cluster-Modus gelangt der Garnreiniger 4, wenn er einen "Cluster-Start" detektiert, d.h. wenn er feststellt, dass eine Häufung von Fehlstellen den Messkopf 5 passiert. Hierzu zählt er z.B. die Zahl der Fehlstellen pro Längeneinheit, oder er misst die Abstände zwischen den Fehlstellen. Sobald die Zahl der Fehlstellen pro Längeneinheit eine gewisse Fehlerzahl-Limite überschreitet (z.B. mehr als drei Fehlstellen auf zehn Meter Garn) bzw. sobald mehrere nahe aufeinander folgende Fehlstellen detektiert werden (z.B. mehr als drei Fehlstellen mit Abständen kleiner als eine vorgegebene Abstands-Limite von beispielsweise drei Metern), nimmt die Steuerung 6 an, dass eine Häufung vorliegt. Der Garnreiniger 4 geht in den Cluster-Modus über.The switch from normal to cluster mode Yarn cleaner 4, if it detects a "cluster start", i.e. if he finds an accumulation of defects passes the measuring head 5. This includes e.g. the Number of defects per unit length, or he measures the Distances between the missing parts. Once the number of Defects per length unit have a certain number of defects exceeds (e.g. more than three defects ten meters of yarn) or as soon as several close together the following defects are detected (e.g. more than three defects with distances smaller than a given one Distance limit of, for example, three meters), the controller 6 assumes that there is a cluster. The Yarn cleaner 4 goes into cluster mode.

    Vom Cluster-Modus in den Normal-Modus gelangt der Garnreiniger 4, wenn er ein "Cluster-Ende" detektiert, d.h. wenn er keine Häufung von Fehlstellen mehr feststellt. Hierzu kann wiederum die Zahl der Fehlstellen pro Längeneinheit gemessen werden, oder deren Abstände. Sobald die Zahl der Fehlstellen pro Längeneinheit einen Grenzwert unterschreitet (z.B. weniger als drei Fehlstellen auf zehn Meter Garn) bzw. sobald die Abstände aufeinander folgender Fehlstellen grösser als ein vorgegebener Wert werden (z.B. grösser als drei Meter), nimmt die Steuerung 6 an, dass die Häufung zu Ende ist. Der Garnreiniger 4 geht in den Normal-Modus über.Switched from cluster mode to normal mode the yarn cleaner 4, if it detects a "cluster end", i.e. when he no longer accumulates defects finds. This can in turn be the number of defects measured per unit length, or their distances. As soon as the number of defects per unit length one Falls below the limit (e.g. less than three defects on ten meters of yarn) or as soon as the distances between each other following defects larger than a given one Value (e.g. greater than three meters) takes the Control 6 indicates that the cluster has ended. The yarn cleaner 4 goes into normal mode.

    Ein möglicher Reinigungsalgorithmus ist vereinfacht in Fig. 3 dargestellt.A possible cleaning algorithm is simplified shown in Fig. 3.

    Ausgehend von Punkt 20 wird in einem ersten Schritt 22 geprüft, ob vom Messkopf 5 eine (untolerierbare) Fehlstelle detektiert worden ist. Ist dies der Fall, so wird in Schritt 24 geprüft, ob ein Cluster-Start vorliegt, z.B. indem eines der oben genannten Kriterien verwendet wird. Befindet sich der Garnreiniger nach dieser Prüfung im Cluster-Modus (Schritt 26), so liegt eine Häufung von Fehlstellen vor und ein unmittelbares Herausschneiden der Fehlstelle wird vorläufig unterdrückt.Starting from point 20, a first Step 22 checked whether an (intolerable) Fault has been detected. Is that the case, it is checked in step 24 whether there is a cluster start, e.g. by using one of the above criteria becomes. The yarn cleaner is after this Check in cluster mode (step 26), so there is a cluster of missing parts and an immediate cutting out the defect is temporarily suppressed.

    Befindet sich der Garnreiniger bei Schritt 26 nicht im Cluster-Modus, so ist die Fehlstelle eine vereinzelte Fehlstelle. Die Steuerung 6 initiiert unmittelbar einen Reinigerschnitt (Schritt 28). Das Garn 1 wird im Bereich des Messkopfs 5 geschnitten, die Kreuzspule 3 wird gestoppt. Das Garnende wird in die Schneide- und Spleissvorrichtung 7 zurückgeholt, dort wird das die Fehlstelle enthaltende Garnstück abgeschnitten und das Garn wird verspleisst. Dann beginnt der Umspulbetrieb von Neuem.The thread cleaner is at step 26 not in cluster mode, the defect is an isolated one Defect. The controller 6 initiates immediately a cleaner cut (step 28). The yarn 1 is cut in the area of the measuring head 5, the cheese 3 is stopped. The yarn end is in the cutting and Retrieved splicer 7, there it will be the Cut missing piece of yarn and that Yarn is spliced. Then the rewinding operation of Again.

    Liegt bei Schritt 22 keine Fehlstelle vor, so wird in Schritt 30 geprüft, ob sich der Garnreiniger 4 im Cluster-Modus befindet. Ist dies nicht der Fall, so ist das Garn 1 einwandfrei und die Ausführung geht zu Punkt 20 zurück. Befindet sich der Garnreiniger 4 in Schritt 30 im Cluster-Modus, so wird geprüft, ob ein Cluster-Ende vorliegt (Schritt 32). Hierzu kann wiederum eines der oben erwähnten Kriterien verwendet werden.If there is no defect in step 22, then is checked in step 30 whether the yarn cleaner 4 in Cluster mode. If this is not the case, it is the yarn 1 is perfect and the execution goes to the point 20 back. The yarn cleaner 4 is in step 30 in cluster mode, it is checked whether a cluster end is present (step 32). One of the criteria mentioned above can be used.

    Befindet sich der Garnreiniger 4 nach dieser Prüfung nicht mehr im Cluster-Modus (Schritt 34), so wurde ein Ende des Clusters detektiert. Nun kann der Cluster aus dem Garn entfernt werden (Schritt 36). Hierzu werden im Prinzip die gleichen Schritte wie bei Schritt 28 durchgeführt, wobei das Garn 1 jedoch so weit zurückgespult wird, dass der ganze Cluster herausgeschnitten werden kann. Zu diesem Zweck speichert die Steuerung 6 jeweils die Position des Cluster-Anfangs ab.The yarn cleaner 4 is after this Check no longer in cluster mode (step 34), so was one end of the cluster was detected. Now the cluster can removed from the yarn (step 36). To do this basically the same steps as in step 28 performed, the yarn 1, however, rewound as far is that the whole cluster will be cut out can. For this purpose, the controller 6 stores each the position of the cluster start.

    Befindet sich der Garnreiniger 4 bei Schritt 34 immer noch im Cluster-Modus, so wird in einem Schritt 38 geprüft, ob die Länge des vorliegenden Clusters eine vorgegebene Maximallänge überschreitet. Diese Maximallänge wird durch die Länge gegeben, um welche das Garn 1 maximal zurückgespult werden kann (z.B. 80 Meter). Überschreitet die Länge eines Clusters diese Maximallänge, so wird der Teil des Clusters, der den Messkopf 5 bereits passiert hat, herausgeschnitten (Schritt 40). Zudem (oder alternativ) kann eine Warnung ausgegeben und gegebenenfalls der Prozess gestoppt werden, so dass der Maschinenführer gegebenenfalls den Cops 2 auswechseln kann.The thread cleaner 4 is at step 34 still in cluster mode, so in one step 38 checked whether the length of the present cluster is one exceeds the specified maximum length. This maximum length is given by the length by which the yarn 1 is maximal can be rewound (e.g. 80 meters). exceeds the length of a cluster this maximum length, so becomes the part of the cluster that already has the measuring head 5 happened, cut out (step 40). In addition (or alternatively) a warning can be issued and if necessary the process can be stopped so that the machine operator if necessary, can replace the cops 2.

    Wenn die Länge des Clusters in Schritt 38 die Maximallänge nicht überschreitet, so geht die Ausführung bei Punkt 20 weiter. If the length of the cluster in step 38 is the Execution does not exceed the maximum length continue at point 20.

    Durch das hier beschriebene Verfahren wird erreicht, dass bei einer Häufung von Fehlstellen nicht jede Fehlstelle einzeln herausgeschnitten wird. Vielmehr wird das Garn 1 solange am Messkopf 5 vorbeigespult, bis die Häufung vorüber ist (oder die maximale Cluster-Länge erreicht wird), und erst dann wird die Entfernung aller Fehlstellen gemeinsam durchgeführt. Dadurch wird der Vorgang beschleunigt und die Zahl der Spleissstellen wird reduziert.Through the procedure described here achieved that with an accumulation of defects not each defect is cut out individually. Much more the yarn 1 is spooled past the measuring head 5 until the cluster is over (or the maximum cluster length is reached), and only then will all be removed Flaws carried out together. This will make the process accelerated and the number of splices will be reduced.

    Claims (9)

    Verfahren zur Reinigung eines Garns (1) von Fehlstellen, bei welchem
       in einem Messkopf (5) mindestens ein Garnparameter gemessen wird,
       aufgrund des Garnparameters untolerierbare Fehlstellen detektiert werden und
       die Fehlstellen aus dem Garn (1) herausgeschnitten werden,
       dadurch gekennzeichnet, dass
       bei Detektion einer Häufung von Fehlstellen ein unmittelbares Herausschneiden einzelner Fehlstellen unterdrückt wird um sodann mehrere Fehlstellen gemeinsam herauszuschneiden.    Process for cleaning a yarn (1) from defects, in which
    at least one yarn parameter is measured in a measuring head (5),
    intolerable imperfections are detected due to the yarn parameter and
    the imperfections are cut out of the yarn (1),
    characterized in that
    upon detection of an accumulation of defects, immediate cutting out of individual defects is suppressed in order to then cut out several defects together.         Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass mehrere Reinigerzustände vorgesehen sind, wobei in einem ersten Reinigerzustand Fehlstellen unmittelbar herausgeschnitten werden und in einem zweiten Reinigerzustand das unmittelbare Herausschneiden einzelner Fehlstellen unterdrückt wird, wobei ein Übergang zwischen dem ersten in den zweiten Reinigerzustand erfolgt, wenn eine Häufung von Fehlstellen detektiert wird.A method according to claim 1, characterized in that a plurality of cleaning states are provided, defects being cut out immediately in a first cleaning state and the immediate cutting out of individual defects being suppressed in a second cleaning state, a transition taking place between the first and the second cleaning state when one Accumulation of defects is detected. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass ein Übergang zwischen dem zweiten und dem ersten Reinigerzustand erfolgt, wenn ein Ende der Häufung von Fehlstellen detektiert wird.A method according to claim 2, characterized in that there is a transition between the second and the first cleaner state when an end of the accumulation of defects is detected. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Häufung von Fehlstellen detektiert wird, wenn die Zahl von Fehlstellen pro Längeneinheit eine Fehlerzahl-Limite überschreitet oder wenn der Abstand aufeinander folgender Fehlstellen eine Abstands-Limite unterschreitet.Method according to one of the preceding claims, characterized in that an accumulation of defects is detected if the number of defects per unit length exceeds a number of defects or if the distance between successive defects falls below a distance limit. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass bei Detektion der Häufung von Fehlstellen das Herausschneiden so lange unterdrückt wird, bis keine Häufung von Fehlstellen mehr detektiert wird oder bis eine vorgegebene Maximallänge von Garn den Messkopf (5) passiert hat.Method according to one of the preceding claims, characterized in that upon detection of the accumulation of defects, the cutting out is suppressed until an accumulation of defects is no longer detected or until a predetermined maximum length of yarn has passed the measuring head (5). Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass, wenn die vorgegebene Maximallänge von Garn den Messkopf (5) passiert hat, ohne dass die Häufung von Fehlstellen vorüber ist,
       die bisherige Häufung von Fehlstellen herausgeschnitten wird, und/oder
       ein Warnsignal erzeugt wird.    A method according to claim 5, characterized in that when the predetermined maximum length of yarn has passed the measuring head (5) without the accumulation of defects has passed,
    the previous accumulation of defects is cut out, and / or
    a warning signal is generated.         Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Garn (1) nach dem Messkopf (5) auf eine Spule (3) aufgespult wird und dass nach Ende der Häufung von Fehlstellen das Garn (1) soweit von der Spule (3) zurückgespult wird, dass alle Fehlstellen der Häufung herausgeschnitten werden können.Method according to one of the preceding claims, characterized in that the yarn (1) is wound onto a bobbin (3) after the measuring head (5) and that after the accumulation of defects, the yarn (1) is so far from the bobbin (3) is rewound that all missing parts of the cluster can be cut out. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es beim Umspulen von Garn von einem oder mehreren Cops (2) auf eine Kreuzspule (3) durchgeführt wird.Method according to one of the preceding claims, characterized in that it is carried out when rewinding yarn from one or more cops (2) onto a cross-wound bobbin (3). Garnreiniger mit einem Messkopf (5), einer Schneide- und Spleissvorrichtung (7) und einer Steuerung (6), wobei die Steuerung (6) ausgestaltet ist zur Durchführung des Verfahrens nach einem der vorangehenden Ansprüche.Yarn cleaner with a measuring head (5), one Cutting and splicing device (7) and a control (6), the controller (6) being designed for implementation of the method according to one of the preceding claims.
    EP01104536A 2001-03-05 2001-03-05 Method and device for clearing yarn by cutting out defects Expired - Lifetime EP1238937B1 (en)

    Priority Applications (4)

    Application Number Priority Date Filing Date Title
    DE50103313T DE50103313D1 (en) 2001-03-05 2001-03-05 Method and device for cleaning yarn by cutting out imperfections
    EP01104536A EP1238937B1 (en) 2001-03-05 2001-03-05 Method and device for clearing yarn by cutting out defects
    CZ20020752A CZ301260B6 (en) 2001-03-05 2002-02-28 Method to remove spinning faults from textile yarn
    JP2002056833A JP4194784B2 (en) 2001-03-05 2002-03-04 Thread washing method and thread washing apparatus by excision of defective part

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP01104536A EP1238937B1 (en) 2001-03-05 2001-03-05 Method and device for clearing yarn by cutting out defects

    Publications (2)

    Publication Number Publication Date
    EP1238937A1 true EP1238937A1 (en) 2002-09-11
    EP1238937B1 EP1238937B1 (en) 2004-08-18

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01104536A Expired - Lifetime EP1238937B1 (en) 2001-03-05 2001-03-05 Method and device for clearing yarn by cutting out defects

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    EP (1) EP1238937B1 (en)
    JP (1) JP4194784B2 (en)
    CZ (1) CZ301260B6 (en)
    DE (1) DE50103313D1 (en)

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    Publication number Priority date Publication date Assignee Title
    DE102004013776A1 (en) * 2004-03-20 2005-10-06 Rieter Ingolstadt Spinnereimaschinenbau Ag To clean a yarn of spinning faults, especially at an open-end spinner, on detection of a deviation from nominal values the spinning is interrupted and the spinner stopped for a yarn length to be calculated for removal
    WO2008151454A1 (en) * 2007-06-13 2008-12-18 Uster Technologies Ag Device and method for testing yarn
    DE102012100553A1 (en) 2012-01-24 2013-07-25 Maschinenfabrik Rieter Ag Method and device for splicing yarn
    DE102012103344A1 (en) * 2012-04-17 2013-10-17 Maschinenfabrik Rieter Ag Function unit of a winding unit with a yarn splicing device and a yarn cleaner
    CN103569796A (en) * 2012-07-27 2014-02-12 村田机械株式会社 Yarn defect detecting device and winding device
    EP2774883A1 (en) * 2013-03-08 2014-09-10 Gebrüder Loepfe AG Method for winding and cleaning a yarn

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    EP0628509A1 (en) * 1993-05-12 1994-12-14 Murata Kikai Kabushiki Kaisha Taking-up method and apparatus for automatic winder

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    JPS62255366A (en) * 1986-04-25 1987-11-07 Murata Mach Ltd Yarn defect detecting method
    DE3932667A1 (en) * 1989-09-29 1991-04-11 Rieter Ag Maschf METHOD FOR CLEANING YARN ERRORS AND YARN CLEANER FOR CARRYING OUT THE METHOD

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    EP0628509A1 (en) * 1993-05-12 1994-12-14 Murata Kikai Kabushiki Kaisha Taking-up method and apparatus for automatic winder

    Cited By (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102004013776A1 (en) * 2004-03-20 2005-10-06 Rieter Ingolstadt Spinnereimaschinenbau Ag To clean a yarn of spinning faults, especially at an open-end spinner, on detection of a deviation from nominal values the spinning is interrupted and the spinner stopped for a yarn length to be calculated for removal
    DE102004013776B4 (en) * 2004-03-20 2017-07-27 Rieter Ingolstadt Gmbh Method and device for cleaning yarn defects
    WO2008151454A1 (en) * 2007-06-13 2008-12-18 Uster Technologies Ag Device and method for testing yarn
    DE102012100553A1 (en) 2012-01-24 2013-07-25 Maschinenfabrik Rieter Ag Method and device for splicing yarn
    WO2013110390A1 (en) 2012-01-24 2013-08-01 Maschinenfabrik Rieter Ag Method and device for splicing yarn
    DE102012100553A8 (en) * 2012-01-24 2013-09-26 Maschinenfabrik Rieter Ag Method and device for splicing yarn
    DE102012103344A1 (en) * 2012-04-17 2013-10-17 Maschinenfabrik Rieter Ag Function unit of a winding unit with a yarn splicing device and a yarn cleaner
    CN103569796A (en) * 2012-07-27 2014-02-12 村田机械株式会社 Yarn defect detecting device and winding device
    EP2690046A3 (en) * 2012-07-27 2015-01-14 Murata Machinery, Ltd. Yarn defect detecting device and winding device
    EP2774883A1 (en) * 2013-03-08 2014-09-10 Gebrüder Loepfe AG Method for winding and cleaning a yarn

    Also Published As

    Publication number Publication date
    CZ2002752A3 (en) 2002-10-16
    JP2002308529A (en) 2002-10-23
    DE50103313D1 (en) 2004-09-23
    EP1238937B1 (en) 2004-08-18
    CZ301260B6 (en) 2009-12-23
    JP4194784B2 (en) 2008-12-10

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