EP0678605B1 - Warp yarn control device - Google Patents

Warp yarn control device Download PDF

Info

Publication number
EP0678605B1
EP0678605B1 EP94810223A EP94810223A EP0678605B1 EP 0678605 B1 EP0678605 B1 EP 0678605B1 EP 94810223 A EP94810223 A EP 94810223A EP 94810223 A EP94810223 A EP 94810223A EP 0678605 B1 EP0678605 B1 EP 0678605B1
Authority
EP
European Patent Office
Prior art keywords
warp yarn
weaving machine
accordance
warp
shed weaving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94810223A
Other languages
German (de)
French (fr)
Other versions
EP0678605A1 (en
Inventor
Thomas Dr. Weber
Dietmar Markward
Jaques Peulen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Itema Switzerland Ltd
Maschinenfabrik Rueti AG
Original Assignee
Sultex AG
Maschinenfabrik Rueti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sultex AG, Maschinenfabrik Rueti AG filed Critical Sultex AG
Priority to EP94810223A priority Critical patent/EP0678605B1/en
Priority to DE59408393T priority patent/DE59408393D1/en
Priority to JP7060975A priority patent/JPH07300747A/en
Priority to US08/419,889 priority patent/US5575313A/en
Publication of EP0678605A1 publication Critical patent/EP0678605A1/en
Application granted granted Critical
Publication of EP0678605B1 publication Critical patent/EP0678605B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/20—Warp stop motions
    • D03D51/28—Warp stop motions electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H61/00—Applications of devices for metering predetermined lengths of running material
    • B65H61/005—Applications of devices for metering predetermined lengths of running material for measuring speed of running yarns
    • 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
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • B65H63/032—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic
    • B65H63/0321—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators
    • 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 Row shed weaving machine with a device for Monitoring a warp thread, especially one Leno warp thread according to the preamble of claim 1.
  • a leno binding creates one or more leno edges to create a solidified tissue edge.
  • These warp threads also called leno warp threads, are usually performed separately from the other warp threads and monitored. It is known with a warp stop monitor a break in a warp thread by it is detected whether a warp thread is present or Not.
  • a warp stop monitor monitor a break in a warp thread by it is detected whether a warp thread is present or Not.
  • Such a device is for example from the US-A-4,372,346. In this device carries each warp thread has a lamella that breaks when the Warp thread two conductors and conductors thereby closing a circuit.
  • JP-A-60-157463 discloses an apparatus for Detection of thread breaks in which a beam is periodic is blocked by a rotating disc, the Disk is driven by the thread. At a Thread break the signal loses its periodicity, whereby the thread break can be detected.
  • the present invention is based on the object a series shed loom with a device for Monitoring a warp thread, especially one Leno warp thread to be provided, the device is further developed in such a way that Monitoring the warp thread improved properties having.
  • the Trigger movement or the trigger speed of the Warp threads with an electronic sensor approximately or is precisely detectable in particular it can be determined whether the deduction movement or the Take-off speed a very low or one has a relatively high value.
  • a very low value especially when the warp threads are at a standstill ongoing weaving process, may indicate a break in the warp thread getting closed.
  • Threshold value of the withdrawal speed can be concluded that the warp thread on a unwanted species was torn away, so that a Error signal is generated to the weaving process interrupt.
  • Trigger movement or the approximate speed of a Monitor thread for example optical Correlation measurements, capacitive measurements, measurements with laser etc.
  • the electronic signals from the sensors become one Signal processing device supplied, the one can include digital or analog evaluation electronics, so e.g. also a microprocessor to get a measured value to compare with a specifiable setpoint, and at an error signal if it is exceeded or undershot generate, which is forwarded to a higher-level unit to shut down a weaving machine, for example.
  • digital or analog evaluation electronics so e.g. also a microprocessor to get a measured value to compare with a specifiable setpoint, and at an error signal if it is exceeded or undershot generate, which is forwarded to a higher-level unit to shut down a weaving machine, for example.
  • the rotor 1 shows the device according to the invention in Combination with a row shed loom with an in Direction of rotation 1a rotating weaving rotor 1.
  • the rotor 1 has Guide elements 2a, 2b, 2c, into which by means of a Inserting device 9a, 9b the warp threads 3a, 3b in such a way be inserted that through the guide elements 2a, 2b, 2c an open shed is formed in which the Weft threads 10a, 10b can be inserted.
  • the Insertion device 9a, 9b controls the insertion of the Warp threads 3a, 3b in such a way that at the edge of the fabric 11, which comprises weft threads 10c, 10d, forms an edge 3d.
  • the two Thread rolls 5a, 5b are connected via a coupling part, e.g. a Overrunning clutch or a slip clutch 5c, 5d a common axis 5e mounted.
  • the axis 5e is with an electronic sensor 6 connected to the rotation the axis 5e detected, and the electronic signal over a signal line 7a of a signal processing device 7 forwards.
  • Eyelets 8 are used to guide the warp threads 3a, 3b to guide them on the thread roll 5a, 5b and around an approximately constant wrap angle guarantee.
  • the thread rolls 5a, 5b can be like only shown with a fraction of a full circle to be entangled, or to be entangled several times in order to thereby the friction between warp threads 3a, 3b and Increase thread roll 5a, 5b.
  • the device according to Fig. 1 has the advantage that with a single Monitor a plurality of warp threads at the same time to let. 1 are not shown Braking devices that may be required to the warp threads 3a, 3b, for example between the Thread supply 4a, 4b and the thread roll 5a, 5b arranged is to apply a braking force.
  • the angular velocity of the weaving rotor 1 in the direction of rotation 1a is significantly higher than that during web operation Speed of movement of the warp thread 3a, 3b in Towards fabric 11. Occurs when inserting a warp thread 3a, 3b an error in a guide element 2a, 2b, 2c, such as this with the help of the warp thread 3c is shown, it can happen that the warp thread 3c is entrained by the guide element 2b and thereby on a speed is accelerated by that Angular velocity of the weaving rotor 1 is determined. Kick such an acceleration in one or both of the Threads 3a, 3b, so accelerates Rotational speed of the common axis 5e, so that the occurrence of such an error with the sensor 6 is detectable.
  • the signal processing device 7 is a threshold value 12 can be predefined, if it exceeds or fall below the signal processing device 7 Error signal 13 generated, for example, the weaving rotor 1 to stop.
  • Fig. 2 shows further embodiments of Devices for determining the speed of a Warp thread.
  • the arrangement 16 consists of two sensors 6a, 6b, which are spaced apart in the running direction of the warp thread 3a and monitor the warp thread 3a.
  • the electronic Signals from sensors 6a, 6b are transmitted via signal lines 7a, 7b fed to a signal processing device 7, by means of a correlation of the measured values Speed of the warp thread 3a determined.
  • the between part of the warp thread 3a lying between the two sensors 6a, 6b is by eyelets 8 on a straight line as possible guided, one acting on the warp thread 3a Thread brake 14 keeps the warp thread 3a stretched.
  • the sensors 6a, 6b are based for example on an optical or capacitive Measuring principle.
  • Another arrangement 16 for determining the Speed of the warp thread 3b comprises three eyelets 8, 8a, to deflect the warp thread 3b in a U-shape, the as Retaining means designed eyelet 8a via an elastic Element, for example a spring 15, with a fixed Body is connected.
  • the eyelet 8a experiences depending on the Speed of the warp thread 3b, a deflection that with a sensor 6c, for example an optical sensor or a displacement sensor that can be detected, and via a Signal line 7c of a signal processing device 7 is fed.
  • the arrangement 16 also allows one to detect jerky deflection of the warp thread 3b.
  • Fig. 3 shows an example of a leno binding consisting from three warp threads 3a, 3b, 3c, which with a Row shed weaving machine according to FIG. 1 can be created if three controlled by insertion devices 9a, 9b Warp threads 3a, 3b, 3c are used.
  • the number of required warp threads depends on the type of one too creating fabric edge or an auxiliary edge.
  • the warp threads 3a, 3b, 3c expressed more differentially than leno warp threads 3a, 3c and referred to as a standing thread 3b.

Description

Die vorliegende Erfindung betrifft eine Reihenfachwebmaschine mit einer Vorrichtung zum Überwachen eines Kettfadens, insbesondere eines Dreherkettfadens gemäss dem Oberbegriff von Anspruch 1.The present invention relates to a Row shed weaving machine with a device for Monitoring a warp thread, especially one Leno warp thread according to the preamble of claim 1.

An den Rändern eines Gewebes können mit Kettfäden durch eine Dreherbindung eine oder mehrere Dreherkanten erzeugt werden, um eine verfestigte Gewebekante zu erstellen. Diese Kettfäden, auch Dreherkettfäden genannt, werden üblicherweise getrennt von den übrigen Kettfäden geführt und überwacht. Es ist bekannt mit einem Kettfadenwächter einen Bruch eines Kettfadens zu überwachen, indem detektiert wird, ob ein Kettfaden vorhanden ist oder nicht. Eine solche Vorrichtung ist beispielsweise aus der US-A-4,372,346 bekannt. Bei dieser Vorrichtung trägt jeder Kettfaden eine Lamelle, die bei Bruch des Kettfadens zwei Stromschienen leitend verbidet und dadurch einen Stromkreis schliesst.At the edges of a fabric you can use warp threads a leno binding creates one or more leno edges to create a solidified tissue edge. These warp threads, also called leno warp threads, are usually performed separately from the other warp threads and monitored. It is known with a warp stop monitor a break in a warp thread by it is detected whether a warp thread is present or Not. Such a device is for example from the US-A-4,372,346. In this device carries each warp thread has a lamella that breaks when the Warp thread two conductors and conductors thereby closing a circuit.

Die JP-A-60-157463 offenbart eine Vorrichtung zur Detektion von Fadenbrüchen, bei der ein Strahl periodisch durch eine rotierende Scheibe blockiert wird, wobei die Scheibe durch den Faden angetrieben wird. Bei einem Fadenbruch verliert das Signal seine Periodizität, wodurch der Fadenbruch detektierbar ist.JP-A-60-157463 discloses an apparatus for Detection of thread breaks in which a beam is periodic is blocked by a rotating disc, the Disk is driven by the thread. At a Thread break the signal loses its periodicity, whereby the thread break can be detected.

Bei gewissen Webverfahren oder Webmaschinen, so zum Beispiel bei Mehrphasenwebmaschinen mit einem Webrotor, ergibt sich das Problem, dass ein Kettfaden beziehungsweise ein Dreherkettfaden vom sich drehende Webrotor erfasst und auf den Webrotor aufgewickelt werden kann, ohne dass der Kettfaden oder Dreherkettfaden dabei reisst. Die bekannten Kettfadenwächter können einen solchen Fehler nicht erkennen.With certain weaving processes or weaving machines, so for Example for multi-phase weaving machines with a weaving rotor, the problem arises that a warp thread or a leno warp thread from the rotating one Web rotor recorded and wound on the web rotor can without the warp thread or leno warp thread tears. The well-known warp thread monitors can not recognize such error.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Reihenfachwebmaschine mit einer Vorrichtung zum Überwachen eines Kettfadens, insbesondere eines Dreherkettfadens, bereitzustellen, wobei die Vorrichtung derart weitergebildet ist, dass sie bezüglich der Überwachung des Kettfadens verbesserte Eigenschaften aufweist.The present invention is based on the object a series shed loom with a device for Monitoring a warp thread, especially one Leno warp thread to be provided, the device is further developed in such a way that Monitoring the warp thread improved properties having.

Diese Aufgabe wird erfindungsgemäss gelöst durch den Gegenstand mit den in Anspruch 1 definierten Merkmalen. Die Unteransprüche 2 bis 9 beziehen sich auf weitere, vorteilhafte Ausgestaltungen der Erfindung.According to the invention, this object is achieved by the Object with the features defined in claim 1. The sub-claims 2 to 9 relate to further, advantageous embodiments of the invention.

Die Vorteile der Erfindung sind darin zu sehen, dass die Abzugsbewegung oder die Abzugsgeschwindigkeit der Kettfäden mit einem elektronischen Sensor ungefähr oder genau erfassbar ist, insbesondere ist feststellbar, ob die Abzugsbewegung beziehungsweise die Abzugsgeschwindigkeit einen sehr tiefen oder einen relativ hohen Wert aufweist. Bei einem sehr tiefen Wert, insbesondere bei einem Stillstand der Kettfäden beim laufenden Webvorgang, kann auf einen Bruch des Kettfadens geschlossen werden. Bei einem über einem vorgebbaren Schwellenwert liegenden Wert der Abzugsgeschwindigkeit kann geschlossen werden, dass der Kettfaden auf eine unerwünschte Art fortgerissen wurde, sodass ein Fehlersignal erzeugt wird, um den Webvorgang zu unterbrechen.The advantages of the invention are that the Trigger movement or the trigger speed of the Warp threads with an electronic sensor approximately or is precisely detectable, in particular it can be determined whether the deduction movement or the Take-off speed a very low or one has a relatively high value. At a very low value, especially when the warp threads are at a standstill ongoing weaving process, may indicate a break in the warp thread getting closed. With one over a predefinable one Threshold value of the withdrawal speed can be concluded that the warp thread on a unwanted species was torn away, so that a Error signal is generated to the weaving process interrupt.

Nebst den in den Ausführungsbeispielen dargestellten Methoden gibt es eine Vielzahl von Möglichkeiten, die Abzugsbewegung oder die ungefähre Geschwindigkeit eines Fadens zu überwachen, so zum Beispiel optische Korrelationsmessungen, kapazitive Messungen, Messungen mit Laser usw.In addition to those shown in the exemplary embodiments There are a variety of ways that methods Trigger movement or the approximate speed of a Monitor thread, for example optical Correlation measurements, capacitive measurements, measurements with laser etc.

Die elektronischen Signale der Sensoren werden einer Signalverarbeitungsvorrichtung zugeführt, die eine digitale oder analoge Auswerteelektronik umfassen kann, so z.B. auch einen Mikroprozessor, um einen gemessenen Wert mit einem vorgebbaren Sollwert zu vergleichen, und bei dessen Über- oder Unterschreiten ein Fehlersignal zu erzeugen, das einer übergeordneten Einheit weitergeleitet wird, um zum Beispiel eine Webmaschine stillzusetzen.The electronic signals from the sensors become one Signal processing device supplied, the one can include digital or analog evaluation electronics, so e.g. also a microprocessor to get a measured value to compare with a specifiable setpoint, and at an error signal if it is exceeded or undershot generate, which is forwarded to a higher-level unit to shut down a weaving machine, for example.

Im folgenden wird die Erfindung anhand von in den Zeichnungen dargestellten Ausführungsbeispielen im einzelnen erläutert. Es zeigt:

Fig. 1
Eine Vorrichtung zum Überwachen eines Kettfadens an einer Reihenfachwebmaschine;
Fig. 2
eine weitere Vorrichtung zum Überwachen eines Kettfadens an einer Webmaschine;
Fig. 3
ein Beispiel einer aus Kettfäden bestehenden Dreherbindung.
The invention is explained in detail below on the basis of exemplary embodiments illustrated in the drawings. It shows:
Fig. 1
A device for monitoring a warp thread on a series shed loom;
Fig. 2
a further device for monitoring a warp thread on a weaving machine;
Fig. 3
an example of a leno weave consisting of warp threads.

Fig. 1 zeigt die erfindungsgemässe Vorrichtung in Kombination mit einer Reihenfachwebmaschine mit einem in Drehrichtung 1a drehenden Webrotor 1. Der Rotor 1 weist Führungselemente 2a, 2b, 2c auf, in die mittels einer Einlegevorrichtung 9a, 9b die Kettfäden 3a, 3b derart eingelegt werden, dass durch die Führungselemente 2a, 2b, 2c ein offenes Webfach gebildet wird, in das die Schussfäden 10a, 10b eintragbar sind. Die Einlegevorrichtung 9a, 9b steuert das Einlegen der Kettfäden 3a, 3b derart, dass sich am Rand des Gewebes 11, das Schussfäden 10c, 10d umfasst, eine Kante 3d bildet. Eine Anordnung 5 zum Erfassen der Bewegung der Kettfäden 3a, 3b umfasst im vorliegenden Ausführungsbeispiel für jeden Kettfaden 3a, 3b eine Fadenrolle 5a, 5b, auf welcher der Kettfaden 3a, 3b aufliegt, und die durch den sich in Richtung des Gewebes 11 bewegenden Kettfaden 3a, 3b eine Rotation in Drehrichtung 5f erfährt. Die beiden Fadenrollen 5a, 5b sind über ein Kupplungsteil, z.B. eine Freilaufkupplung oder eine Rutschkupplung 5c, 5d, auf einer gemeinsamen Achse 5e gelagert. Die Achse 5e ist mit einem elektronischen Sensor 6 verbunden, der die Drehung der Achse 5e erfasst, und das elektronische Signal über eine Signalleitung 7a einer Signalverarbeitungsvorrichtung 7 weiterleitet. Ösen 8 dienen zur Führung der Kettfäden 3a, 3b, um diese auf der Fadenrolle 5a, 5b zu führen und um einen ungefähr konstanten Umschlingungswinkel zu gewährleisten. Die Fadenrollen 5a, 5b können wie dargestellt nur mit einem Bruchteil eines Vollkreises umschlungen sein, oder auch mehrfach umschlungen sein, um dadurch die Reibung zwischen Kettfaden 3a, 3b und Fadenrolle 5a, 5b zu erhöhen. Die Vorrichtung gemäss Fig. 1 weist den Vorteil auf, dass sich mit einem einzigen Sensor eine Mehrzahl von Kettfäden gleichzeitig überwachen lassen. Nicht dargestellt sind in Fig. 1 Bremsvorrichtungen, die unter Umständen erforderlich sind, um auf die Kettfäden 3a, 3b, zum Beispiel zwischen dem Fadenvorrat 4a, 4b und der Fadenrolle 5a, 5b angeordnet ist, eine Bremskraft zu bewirkten.1 shows the device according to the invention in Combination with a row shed loom with an in Direction of rotation 1a rotating weaving rotor 1. The rotor 1 has Guide elements 2a, 2b, 2c, into which by means of a Inserting device 9a, 9b the warp threads 3a, 3b in such a way be inserted that through the guide elements 2a, 2b, 2c an open shed is formed in which the Weft threads 10a, 10b can be inserted. The Insertion device 9a, 9b controls the insertion of the Warp threads 3a, 3b in such a way that at the edge of the fabric 11, which comprises weft threads 10c, 10d, forms an edge 3d. An arrangement 5 for detecting the movement of the warp threads 3a, 3b in the present exemplary embodiment for each warp thread 3a, 3b a thread roll 5a, 5b, on which the warp thread 3a, 3b rests, and which by the in Warp thread 3a, 3b moving in the direction of the fabric 11 Experience rotation in the direction of rotation 5f. The two Thread rolls 5a, 5b are connected via a coupling part, e.g. a Overrunning clutch or a slip clutch 5c, 5d a common axis 5e mounted. The axis 5e is with an electronic sensor 6 connected to the rotation the axis 5e detected, and the electronic signal over a signal line 7a of a signal processing device 7 forwards. Eyelets 8 are used to guide the warp threads 3a, 3b to guide them on the thread roll 5a, 5b and around an approximately constant wrap angle guarantee. The thread rolls 5a, 5b can be like only shown with a fraction of a full circle to be entangled, or to be entangled several times in order to thereby the friction between warp threads 3a, 3b and Increase thread roll 5a, 5b. The device according to Fig. 1 has the advantage that with a single Monitor a plurality of warp threads at the same time to let. 1 are not shown Braking devices that may be required to the warp threads 3a, 3b, for example between the Thread supply 4a, 4b and the thread roll 5a, 5b arranged is to apply a braking force.

Die Winkelgeschwindigkeit des Webrotors 1 in Drehrichtung 1a ist während dem Webbetrieb wesentlich höher als die Geschwindigkeit der Bewegung des Kettfadens 3a, 3b in Richtung Gewebe 11. Tritt beim Einlegen eines Kettfadens 3a, 3b in ein Führungselement 2a, 2b, 2c ein Fehler auf, wie dies zum Beispiel an Hand des Kettfadens 3c dargestellt ist, so kann es vorkommen, dass der Kettfaden 3c vom Führungselement 2b mitgerissen wird und dadurch auf eine Geschwindigkeit beschleunigt wird, die durch die Winkelgeschwindigkeit des Webrotors 1 bestimmt ist. Tritt eine solche Beschleunigung bei einem oder beiden der Drehfäden 3a, 3b auf, so beschleunigt sich die Rotationsgeschwindigkeit der gemeinsamen Achse 5e, sodass das Auftreten eines solchen Fehlers mit dem Sensor 6 erfassbar ist. Der Signalverarbeitungsvorrichtung 7 ist ein Schwellenwert 12 vorgebbar, bei dessen über- oder unterschreiten die Signalverarbeitungsvorrichtung 7 ein Fehlersignal 13 erzeugt, um zum Beispiel den Webrotor 1 anzuhalten.The angular velocity of the weaving rotor 1 in the direction of rotation 1a is significantly higher than that during web operation Speed of movement of the warp thread 3a, 3b in Towards fabric 11. Occurs when inserting a warp thread 3a, 3b an error in a guide element 2a, 2b, 2c, such as this with the help of the warp thread 3c is shown, it can happen that the warp thread 3c is entrained by the guide element 2b and thereby on a speed is accelerated by that Angular velocity of the weaving rotor 1 is determined. Kick such an acceleration in one or both of the Threads 3a, 3b, so accelerates Rotational speed of the common axis 5e, so that the occurrence of such an error with the sensor 6 is detectable. The signal processing device 7 is a threshold value 12 can be predefined, if it exceeds or fall below the signal processing device 7 Error signal 13 generated, for example, the weaving rotor 1 to stop.

Ist für jede Fadenrolle 5a, 5b ein separater Sensor 6 zur Erfassung der Rotation vorgesehen, so erlaubt die Anordnung 5 auch einen Fadenbruch zu detektieren. Unterschreitet beim Weben die Winkelgeschwindigkeit einen vorgebbaren Sollwert, zum Beispiel bei einem Stillstand einer Fadenrolle 5a, 5b, so kann daraus geschlossen werden, dass ein Fadenbruch des Kettfadens 3a, 3b aufgetreten ist, oder dass der Fadenvorrat 4a, 4b aufgebraucht ist.Is a separate sensor 6 for each thread roll 5a, 5b Detection of the rotation provided, so the Arrangement 5 also to detect a thread break. Falls below the angular velocity during weaving Predefinable setpoint, for example during a standstill a thread roll 5a, 5b, so it can be concluded be that a thread break of the warp thread 3a, 3b has occurred, or that the thread supply 4a, 4b is used up.

Fig. 2 zeigt weitere Ausführungsbeispiele von Vorrichtungen zum Bestimmen der Geschwindigkeit eines Kettfadens. Die Anordnung 16 besteht aus zwei Sensoren 6a, 6b, die in Laufrichtung des Kettfadens 3a beabstandet sind und den Kettfaden 3a überwachen. Die elektronischen Signale der Sensoren 6a, 6b werden über Signalleitungen 7a, 7b einer Signalverarbeitungsvorrichtung 7 zugeführt, die mittels einer Korrelation der gemessenen Werte die Geschwindigkeit des Kettfadens 3a ermittelt. Das zwischen den beiden Sensoren 6a, 6b liegende Teil des Kettfadens 3a wird durch Ösen 8 auf einer möglichst geraden Linie geführt, wobei eine auf den Kettfaden 3a wirkende Fadenbremse 14 den Kettfaden 3a gestreckt hält. Der Kettfaden 3a wird über eine Fadenrolle 5a umgelenkt und einer Webmaschine zugeführt. Die Sensoren 6a, 6b basieren zum Beispiel auf einem optischen oder kapazitiven Messprinzip.Fig. 2 shows further embodiments of Devices for determining the speed of a Warp thread. The arrangement 16 consists of two sensors 6a, 6b, which are spaced apart in the running direction of the warp thread 3a and monitor the warp thread 3a. The electronic Signals from sensors 6a, 6b are transmitted via signal lines 7a, 7b fed to a signal processing device 7, by means of a correlation of the measured values Speed of the warp thread 3a determined. The between part of the warp thread 3a lying between the two sensors 6a, 6b is by eyelets 8 on a straight line as possible guided, one acting on the warp thread 3a Thread brake 14 keeps the warp thread 3a stretched. Of the Warp thread 3a is deflected via a thread roll 5a and fed to a weaving machine. The sensors 6a, 6b are based for example on an optical or capacitive Measuring principle.

Eine weitere Anordnung 16 zum Bestimmen der Geschwindigkeit des Kettfadens 3b umfasst drei Ösen 8, 8a, um den Kettfaden 3b U-förmig auszulenken, wobei die als Haltemittel ausgebildete Öse 8a über ein elastisches Element, zum Beispiel einer Feder 15, mit einem festen Körper verbunden ist. Die Öse 8a erfährt, abhängig von der Geschwindigkeit des Kettfadens 3b, eine Auslenkung, die mit einem Sensor 6c, zum Beispiel einem optischen Sensor oder einem Wegsensor, erfassbar ist, und über eine Signalleitung 7c einer Signalverarbietungsvorrichtung 7 zugeführt wird. Die Anordnung 16 erlaubt auch eine ruckartige Auslenkung des Kettfadens 3b zu detektieren.Another arrangement 16 for determining the Speed of the warp thread 3b comprises three eyelets 8, 8a, to deflect the warp thread 3b in a U-shape, the as Retaining means designed eyelet 8a via an elastic Element, for example a spring 15, with a fixed Body is connected. The eyelet 8a experiences depending on the Speed of the warp thread 3b, a deflection that with a sensor 6c, for example an optical sensor or a displacement sensor that can be detected, and via a Signal line 7c of a signal processing device 7 is fed. The arrangement 16 also allows one to detect jerky deflection of the warp thread 3b.

Fig. 3 zeigt ein Beispiel einer Dreherbindung, bestehend aus drei Kettfäden 3a, 3b, 3c, die mit einer Reihenfachwebmaschine gemäss Fig. 1 erstellbar ist, wenn dazu drei durch Einlegevorrichtungen 9a, 9b angesteuerte Kettfäden 3a, 3b, 3c verwendet werden. Die Anzahl der erforderlichen Kettfäden hängt ab von der Art einer zu erstellenden Gewebekante beziehungsweise einer Hilfskante. In der vorliegenden Dreherbindung werden die Kettfäden 3a, 3b, 3c differenzierter ausgedrückt als Dreherkettfäden 3a, 3c und als ein Steherfaden 3b bezeichnet.Fig. 3 shows an example of a leno binding consisting from three warp threads 3a, 3b, 3c, which with a Row shed weaving machine according to FIG. 1 can be created if three controlled by insertion devices 9a, 9b Warp threads 3a, 3b, 3c are used. The number of required warp threads depends on the type of one too creating fabric edge or an auxiliary edge. In the present leno weave, the warp threads 3a, 3b, 3c expressed more differentially than leno warp threads 3a, 3c and referred to as a standing thread 3b.

Claims (9)

  1. Series shed weaving machine comprising a weaving rotor (1) with guide elements (2a, 2b, 2c) arranged at the surface for the holding of warp threads (3a, 3b), characterized in that an apparatus (5; 16) is provided for detecting a movement of at least one warp yarn (3a, 3b), in particular of a leno warp yarn (3a, 3b, 3c), in the drawing-off direction, and in that the apparatus (5; 16) has an electronic sensor (6; 6a, 6b; 6c).
  2. Series shed weaving machine in accordance with claim 1, characterized in that an electronic sensor (6; 6a, 6b; 6c) is associated with each warp yarn (3a, 3b).
  3. Series shed weaving machine in accordance with one of the claims 1 or 2, characterized in that a speed of the warp yarn (3a, 3b) is detected.
  4. Series shed weaving machine in accordance with one of the claims 1 to 3, characterized in that the electronic sensor (6; 6a, 6b; 6c) is connected to a signal processing apparatus (7), in that a threshold value (12) can be preset for the signal processing apparatus (7), and in that the signal processing apparatus (7) produces an error signal (13) when the value of the electronic sensor (6) exceeds or falls short of the threshold value (12).
  5. Series shed weaving machine in accordance with one of the claims 1 to 4, characterized in that the arrangement (5) comprises at least one yarn roller (5a, 5b) which is connected to a common axle (5e) via a coupling means (5c, 5d), and in that an electronic sensor (6) detects the rotational motion of the common axle (5e).
  6. Series shed weaving machine in accordance with one of the claims 1 to 4, characterized in that the arrangement (16) comprises two sensors (6a, 6b) which are separated from one another in the running direction of the warp yarn (3a, 3b) and which monitor the warp yarn (3a, 3b), and in that the signal processing apparatus (7) determines the speed of the warp yarn (3a, 3b) from the signals (7a, 7b) of the two sensors (6a, 6b) by correlation.
  7. Series shed weaving machine in accordance with one of the claims 1 to 4, characterized in that the arrangement (16) comprises an elastically secured holding means (8a) through which a warp yarn (3a, 3b) runs, in that the holding means (8a) is deflectable by the warp yarn (3a, 3b), and in that a sensor (6c) detects the deflection.
  8. Series shed weaving machine in accordance with one of the claims 1 to 7, characterized in that the sensor (6) utilizes an optical or a capacitive measurement principle.
  9. Series shed weaving machine in accordance with one of the claims 1 to 7, characterized in that the sensor (6) measures a path or a force.
EP94810223A 1994-04-22 1994-04-22 Warp yarn control device Expired - Lifetime EP0678605B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP94810223A EP0678605B1 (en) 1994-04-22 1994-04-22 Warp yarn control device
DE59408393T DE59408393D1 (en) 1994-04-22 1994-04-22 Device for monitoring a warp thread
JP7060975A JPH07300747A (en) 1994-04-22 1995-03-20 Warp inspection apparatus
US08/419,889 US5575313A (en) 1994-04-22 1995-04-11 Apparatus for monitoring a warp yarn movement in a multi-phase weaving machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94810223A EP0678605B1 (en) 1994-04-22 1994-04-22 Warp yarn control device

Publications (2)

Publication Number Publication Date
EP0678605A1 EP0678605A1 (en) 1995-10-25
EP0678605B1 true EP0678605B1 (en) 1999-06-09

Family

ID=8218240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810223A Expired - Lifetime EP0678605B1 (en) 1994-04-22 1994-04-22 Warp yarn control device

Country Status (4)

Country Link
US (1) US5575313A (en)
EP (1) EP0678605B1 (en)
JP (1) JPH07300747A (en)
DE (1) DE59408393D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29909242U1 (en) * 1999-05-27 1999-09-16 Dornier Gmbh Lindauer Weft brake for weaving machines
ES2282343T3 (en) * 2001-06-09 2007-10-16 Gebruder Klocker Gmbh DEVICE FOR THE DETECTION OF RETURNS OF RETURN GASA THREAD IN MACHINES OF TEJER OR MACHINE OF TEJER, IN PARTICULAR WITH MARKS OF LIZO AND A DEVICE FOR THE DETECTION OF BREAKS OF THREAD.
DE10133800C1 (en) * 2001-06-09 2003-02-06 Kloecker Entwicklungs Gmbh Geb Device for determining thread breaks in leno threads in weaving machines or looms, in particular with heald frames, and a device for determining thread breaks
US20040212803A1 (en) * 2003-04-22 2004-10-28 Sultex Ag Measuring device for movements on a weaving machine
DE202013010963U1 (en) 2013-12-05 2014-01-22 Gebrüder Klöcker GmbH Device for monitoring the breakage of leno threads of a textile machine, in particular a weaving machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372346A (en) * 1979-09-03 1983-02-08 Aktiengesellschaft Adolph Saurer Electrical warp thread-monitoring apparatus for a loom

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1333993A (en) * 1962-07-17 1963-08-02 Loepfe Ag Geb Thread breaker device for textile machines
FR1523985A (en) * 1966-05-31 1968-05-03 Heberlein & Co Ag Weft controller applied to a loom
FR1492492A (en) * 1966-09-08 1967-08-18 Elitex Zavody Textilniho Thread sensor safety device for winders, as well as winders provided with said device
SE390070B (en) * 1975-05-05 1976-11-29 Rydborn S A O APPARATUS FOR INDICATING WHETHER ONE OR MORE PREPARATIONS ARE MOVING
FR2421131A1 (en) * 1978-03-30 1979-10-26 Godier Roger Electronic control device for textile machinery - controls delivery rollers, knives, cam systems, etc.
US4177838A (en) * 1978-04-06 1979-12-11 Appalachian Electronic Instruments, Inc. Stop motion system for high speed looms and the like
JPS60157463A (en) * 1984-01-26 1985-08-17 Mitsubishi Heavy Ind Ltd Thread breakage detector
BE1000900A4 (en) * 1987-09-02 1989-05-09 Picanol Nv MEET-AND detection device FOR DETERMINING THE LOCATION OF A BREACH OF A CHAIN ​​WIRE FOR LOOMS.
TW210363B (en) * 1992-01-24 1993-08-01 Tsudakoma Ind Co Ltd
FR2698962B1 (en) * 1992-12-07 1995-02-10 Commissariat Energie Atomique Method and device for non-contact measurement of the tension and the running speed of a wire.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372346A (en) * 1979-09-03 1983-02-08 Aktiengesellschaft Adolph Saurer Electrical warp thread-monitoring apparatus for a loom

Also Published As

Publication number Publication date
US5575313A (en) 1996-11-19
DE59408393D1 (en) 1999-07-15
JPH07300747A (en) 1995-11-14
EP0678605A1 (en) 1995-10-25

Similar Documents

Publication Publication Date Title
EP1953282B1 (en) Method and device for inserting weft thread into a loom
EP0490106A1 (en) Device for preventing damage in a printing machine
DE60017693T2 (en) Method and device for controlling electrically controlled weft yarn brakes for automatic adjustment of the mechanical tension of a weft thread in textile machines with mechanical weft insertion
DE60003895T2 (en) METHOD AND DEVICE FOR MONITORING YARN
EP0678605B1 (en) Warp yarn control device
DE4130679C2 (en) Device for preventing printing unit damage
EP1440193B1 (en) Yarn processing system
EP0769581B1 (en) Device for reducing the load of a weft yarn to be inserted in the shed of a loom
DE19611878B4 (en) Method for fault detection in the transport of a continuous paper web in a printing machine
EP0816545B1 (en) Defective weft insertion detection device on a gripper loom
EP1270780A2 (en) Device for detecting leno yarn breakages on weaving looms and loom, particularly with heald frames and a device for detecting yarn breakages
DE69909907T2 (en) Device for monitoring the thread reserve in weft supply devices for weaving machines
EP0686838B1 (en) Device for measuring yarn tension and loom
EP1640485A2 (en) Device for determining the yarn tension of a single yarn in a yarn sheet in textile processing
EP1350878B1 (en) Method for monitoring the weft thread in a loom
DE2329303C3 (en) Device for monitoring the weft thread as it is being wound into the shuttle of shaft shed looms
EP0866155B1 (en) Method and device for controlling the formation of the lease shed on a warping machine
EP1099784B1 (en) Weaving machine with a device for inserting a plurality of generally different weft threads
EP0570875B1 (en) Process to determine a characteristic value for the operation of a loom and loom for the execution of this process
DD209862A5 (en) SAFETY DEVICE FOR FLAT KNITTING MACHINES
DE19716587C1 (en) On=line supervisory control for weft monitoring system of air jet loom
DE60211233T2 (en) Method for monitoring the operation of an entry brake
DE3814600C2 (en) Weaving process and shuttle for its implementation
AT377541B (en) WIFE MONITORING DEVICE FOR PARTICULARLY PROTECTIVE WEAVING MACHINES
DE4011944C2 (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR IT

17P Request for examination filed

Effective date: 19960326

17Q First examination report despatched

Effective date: 19960828

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19990609

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19990609

REF Corresponds to:

Ref document number: 59408393

Country of ref document: DE

Date of ref document: 19990715

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20020412

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020418

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030430

BERE Be: lapsed

Owner name: *SULZER RUTI A.G.

Effective date: 20030430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031101