EP1357213A2 - Device and method to regulate the yarn tension in textile machines - Google Patents

Device and method to regulate the yarn tension in textile machines Download PDF

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Publication number
EP1357213A2
EP1357213A2 EP03004706A EP03004706A EP1357213A2 EP 1357213 A2 EP1357213 A2 EP 1357213A2 EP 03004706 A EP03004706 A EP 03004706A EP 03004706 A EP03004706 A EP 03004706A EP 1357213 A2 EP1357213 A2 EP 1357213A2
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EP
European Patent Office
Prior art keywords
thread
force
brake
braking
tension
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
Application number
EP03004706A
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German (de)
French (fr)
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EP1357213B1 (en
EP1357213A3 (en
Inventor
Wilhelm Herrlein
Manuel Renz
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Publication date
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Publication of EP1357213A2 publication Critical patent/EP1357213A2/en
Publication of EP1357213A3 publication Critical patent/EP1357213A3/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/24—Surfaces movable automatically to compensate for variation in tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/31—Tensile forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • 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 and a method for regulating the Thread tension of a thread in textile processing machines, in particular in Looms according to the preamble of the independent claims.
  • Such devices often referred to as thread brakes, are available in many different ways Designs known and are e.g. as a weft brake in weaving machines used.
  • DE 34 46 567 C1 shows a weft brake with controllable braking effect, the of two resiliently opposed, picking up the weft thread between them lamella-like parts.
  • Electromagnetically controllable means are provided which act on at least one of the slat-like parts and thereby an adjustable Apply braking force to the thread.
  • a similar design of a weft brake is from DE 43 06 911 C1 previously known.
  • This weft brake also has a lamella-like structure underlying, the location of at least one of the slats by a stepper motor is changeable, the via an eccentrically arranged on the motor shaft actuator the lamella acts.
  • a variety of other types of thread brakes are known, e.g. with a Brake band and a controllable brake body, between which the weft thread is performed according to EP 0 475 892 A1, or so-called wrap brakes, in which the braking force is adjustable by changing the wrap angle, from Basic principle based on a thread tensioning device in EP 0 467 059 A1 described.
  • the thread brake consists essentially of one Thread tension sensor and the actual thread brake. On the thread tension sensor the thread must measure the current thread tension or the applied thread tension Braking force are redirected, causing a force proportional to the thread tension a corresponding measuring element can be transmitted. Resulting from the redirection but there is an unnecessary mechanical stress on the thread, even if the Thread brake is not working, i.e. is open.
  • the object of the invention is therefore a device and a method for control to further develop the thread tension of a thread in textile processing machines, that the mechanical stress on the thread is minimized.
  • the thread brake then comprises at least one with the Braking element mechanically coupled force transducer for measuring one from the thread the braking element exercised, directed in the running direction of the thread and for Thread tension proportional force F, and a control device for controlling the Thread tension by changing the braking force B depending on the measured force F.
  • the new principle of the controlled thread brake is based on the thread tension generated by the braking element and simultaneously measured directly on the braking element is so that the braking force of the braking element exerted on the thread is dependent the thread tension can be regulated.
  • the thread tension is monitored and regulated at the same time.
  • the thread had to be redirected for the tension measurement.
  • the thread can be completely free through the open brake be passed through.
  • the thread must be used for thread tension measurement and braking not be redirected, i.e. the weft can be absolutely straight through the Thread brake are performed.
  • the braking element comprises two opposite and picking up the thread between them Power transmission means, wherein at least one of the power transmission means controllable actuating element acts, the position of at least one of the Power transmission means adjusted against the other.
  • At least one of the force transmission means is linear in the running direction of the thread movably mounted and acts on the force transducer, which preferably as piezoelectric force transducer is formed.
  • the actuating element can be a piezoelectric actuating element that very fast adjustment movements allowed.
  • FIG. 1 schematically shows a thread brake 1 of the type that can be used, for example, to brake a weft thread in a weaving machine.
  • the thread.2 is guided in the running direction 3 by the thread brake.
  • the braking force B is generated by two actuating elements 8, 9 and is introduced into the thread 2 via two brake plates 4, 5 which receive the thread 2 between them.
  • the brake plates 4, 5 lie opposite one another and are preferably designed to be resilient, wherein they are mounted in corresponding bearings 6, 7. When the thread brake is open, the thread 2 runs unhindered, without contact with the brake plates 4, 5 and without deflection through the thread brake.
  • a thread tension force F generated in the thread which in the brake plates 4, 5 each in the direction 3 of the Faden's opposing force generated by F / 2.
  • the brake plates 4, 5 are in the running direction 3 of the thread 2 is movably supported and mechanically with fixed force transducers 10, 11 coupled.
  • the counterforce F / 2 acting on the brake plates 4, 5 is proportional to the thread tension force F and is measured by the force transducers 10, 11 and one Control device supplied.
  • the measured force F is independent of the thread diameter and the coefficient of friction of the Thread 2 and the braking elements. However, it is directly proportional to that on the thread applied braking force B, and thus proportional to the thread tension.
  • the control device 12 regulates the thread tension by changing the braking force B. of the actuating elements 8, 9 in dependence on the measured force F such that sets a desired thread tension in thread 2.
  • Figure 2 shows an embodiment of a thread brake 1 with a passive brake plate 13 with adjustable bias, which is received in a fixed bearing 13.
  • the braking force B applied by an actuating element 15 is transmitted to a brake plate 16 which rests on the brake plate 13, the thread 2 being passed between the brake plate 13 and the brake plate 16.
  • the thread tension force F generated in the thread is transferred equally to the brake plate 13 and the brake plate 16 and in each case generates a counterforce F / 2 which is measured by a force transducer 17 mechanically coupled to the brake plate 16 and fed to a control device 18.
  • the regulating device 18 regulates the thread tension by changing the braking force B. of the actuating element 15 in dependence on the measured force F such that sets a desired thread tension in thread 2.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

A thread tension regulator comprises a force pickup transducer that is mechanically coupled to a first thread brake of a thread brake arrangement to receive from the first thread brake a reaction force that is oriented parallel to the thread and that is exerted by the thread onto the first brake. The force pickup transducer has a signal output adapted to provide a measurement signal representing a measurement of the reaction force. A thread tension regulator comprises a thread brake arrangement (1) including a control signal input and a first thread brake (4) arranged to adjustably press against the thread to apply an adjustable braking force (B) onto the thread; a force pickup transducer (10, 11) that is mechanically coupled to the first thread to receive from the first thread a reaction force that is oriented parallel to the thread and that is exerted by the thread onto the first brake, wherein the force pickup transducer has a signal output adapted to provide a measurement signal representing a measurement of the reaction force; and a thread tension regulating arrangement that includes a measurement signal input connected to the signal output of the force pickup transducer and a control signal output connected to the control signal input of the thread brake arrangement and that is adapted to provide at the control signal output a control signal dependent on and responsive to the measurement signal received at the measurement signal input. The thread brake arrangement adjusts the thread brake in response to the control signal to adjust the braking force dependent on the reaction force.

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Regelung der Fadenspannung eines Fadens bei Textilverarbeitungsmaschinen, insbesondere bei Webmaschinen, gemäß dem Oberbegriff der unabhängigen Patentansprüche.The invention relates to a device and a method for regulating the Thread tension of a thread in textile processing machines, in particular in Looms according to the preamble of the independent claims.

Derartige, oft auch als Fadenbremse bezeichnete Vorrichtungen, sind in vielfältigen Ausführungen bekannt und werden z.B. als Schussfadenbremse in Webmaschinen eingesetzt.Such devices, often referred to as thread brakes, are available in many different ways Designs known and are e.g. as a weft brake in weaving machines used.

Die DE 34 46 567 C1 zeigt eine Schussfadenbremse mit steuerbarer Bremswirkung, die aus zwei federnd gegeneinander liegenden, den Schussfaden zwischen sich aufnehmenden lamellenartigen Teilen besteht. Es sind elektromagnetisch steuerbare Mittel vorgesehen, die auf mindestens eines der lamellenartigen Teile einwirken und dadurch eine einstellbare Bremskraft auf den Faden ausüben.DE 34 46 567 C1 shows a weft brake with controllable braking effect, the of two resiliently opposed, picking up the weft thread between them lamella-like parts. Electromagnetically controllable means are provided which act on at least one of the slat-like parts and thereby an adjustable Apply braking force to the thread.

Eine ähnliche Ausführung einer Schussfadenbremse ist aus der DE 43 06 911 C1 vorbekannt. Dieser Schussfadenbremse liegt ebenfalls ein lamellenartiger Aufbau zugrunde, wobei die Lage mindestens einer der Lamellen durch einen Schrittmotor veränderbar ist, der über ein exzentrisch auf der Motorwelle angeordnetes Stellelement auf die Lamelle einwirkt.A similar design of a weft brake is from DE 43 06 911 C1 previously known. This weft brake also has a lamella-like structure underlying, the location of at least one of the slats by a stepper motor is changeable, the via an eccentrically arranged on the motor shaft actuator the lamella acts.

Es sind eine Vielzahl anderer Arten von Fadenbremsen bekannt, z.B. mit einem Bremsband und einem steuerbaren Bremskörper, zwischen welchen der Schussfaden geführt wird gemäß EP 0 475 892 A1, oder sogenannte Umschlingungsbremsen, bei denen die Bremskraft durch Änderung des Umschlingungswinkels einstellbar ist, vom Grundprinzip her anhand einer Fadenspannvorrichtung in der EP 0 467 059 A1 beschrieben.A variety of other types of thread brakes are known, e.g. with a Brake band and a controllable brake body, between which the weft thread is performed according to EP 0 475 892 A1, or so-called wrap brakes, in which the braking force is adjustable by changing the wrap angle, from Basic principle based on a thread tensioning device in EP 0 467 059 A1 described.

Bei allen bekannten Lösungen besteht die Fadenbremse im wesentlichen aus einem Fadenspannungssensor und der eigentlichen Fadenbremse. Am Fadenspannungssensor muss der Faden für eine Messung der aktuellen Fadenspannung bzw. der anliegenden Bremskraft umgelenkt werden, wodurch eine der Fadenspannung proportionale Kraft auf ein entsprechendes Messelement übertragen werden kann. Durch die Umlenkung ergibt sich aber eine unnötige mechanische Beanspruchung des Fadens, auch dann, wenn die Fadenbremse nicht arbeitet, d.h. geöffnet ist.In all known solutions, the thread brake consists essentially of one Thread tension sensor and the actual thread brake. On the thread tension sensor the thread must measure the current thread tension or the applied thread tension Braking force are redirected, causing a force proportional to the thread tension a corresponding measuring element can be transmitted. Resulting from the redirection but there is an unnecessary mechanical stress on the thread, even if the Thread brake is not working, i.e. is open.

Die Aufgabe der Erfindung ist es daher, eine Vorrichtung und ein Verfahren zur Regelung der Fadenspannung eines Fadens bei Textilverarbeitungsmaschinen derart weiterzubilden, dass die mechanische Beanspruchung des Fadens minimiert wird.The object of the invention is therefore a device and a method for control to further develop the thread tension of a thread in textile processing machines, that the mechanical stress on the thread is minimized.

Die Aufgabe wird erfindungsgemäß durch die Merkmale der unabhängigen Patentansprüche gelöst.The object is achieved by the features of the independent Claims resolved.

Danach umfasst die Fadenbremse erfindungsgemäß mindestens einen mit dem Bremselement mechanisch gekoppelten Kraftaufnehmer zur Messung einer vom Faden auf das Bremselement ausgeübten, in Laufrichtung des Fadens gerichteten und zur Fadenspannung proportionalen Kraft F, und eine Regelungseinrichtung zur Regelung der Fadenspannung durch Verändern der Bremskraft B in Abhängigkeit der gemessenen Kraft F.According to the invention, the thread brake then comprises at least one with the Braking element mechanically coupled force transducer for measuring one from the thread the braking element exercised, directed in the running direction of the thread and for Thread tension proportional force F, and a control device for controlling the Thread tension by changing the braking force B depending on the measured force F.

Das neuartige Prinzip der gesteuerten Fadenbremse beruht darauf, dass die Fadenspannung durch das Bremselemente erzeugt und gleichzeitig direkt am Bremselement gemessen wird, so dass die auf den Faden ausgeübte Bremskraft des Bremselements in Abhängigkeit der Fadenspannung geregelt werden kann.The new principle of the controlled thread brake is based on the thread tension generated by the braking element and simultaneously measured directly on the braking element is so that the braking force of the braking element exerted on the thread is dependent the thread tension can be regulated.

Die Fadenspannung wird gleichzeitig überwacht und geregelt. Bei bisherigen Lösungen musste der Faden für die Spannungsmessung umgelenkt werden. Bei der vorliegenden, neuartigen Lösung kann der Faden vollkommen frei durch die geöffnete Bremse hindurchgeführt werden. Der Faden muss für die Fadenspannungsmessung und Bremsung nicht umgelenkt werden, d.h. der Schussfaden kann absolut geradlinig durch die Fadenbremse geführt werden.The thread tension is monitored and regulated at the same time. With previous solutions the thread had to be redirected for the tension measurement. In the present, innovative solution, the thread can be completely free through the open brake be passed through. The thread must be used for thread tension measurement and braking not be redirected, i.e. the weft can be absolutely straight through the Thread brake are performed.

Gemäß einer bevorzugten Ausgestaltung der Erfindung umfasst das Bremselement zwei sich gegenüberliegende und den Faden zwischen sich aufnehmende Kraftübertragungsmittel, wobei auf wenigstens eines der Kraftübertragungsmittel ein steuerbares Betätigungselement einwirkt, das die Lage wenigstens eines der Kraftübertragungsmittel gegenüber dem anderen verstellt. According to a preferred embodiment of the invention, the braking element comprises two opposite and picking up the thread between them Power transmission means, wherein at least one of the power transmission means controllable actuating element acts, the position of at least one of the Power transmission means adjusted against the other.

Mindestens eines der Kraftübertragungsmittel ist in Laufrichtung des Fadens linear beweglich gelagert und wirkt auf den Kraftaufnehmer, der vorzugsweise als piezoelektrischer Kraftaufnehmer ausgebildet ist.At least one of the force transmission means is linear in the running direction of the thread movably mounted and acts on the force transducer, which preferably as piezoelectric force transducer is formed.

Gleichermaßen kann das Betätigungselement ein piezoelektrisches Stellelement sein, das sehr schnelle Stellbewegungen erlaubt.Likewise, the actuating element can be a piezoelectric actuating element that very fast adjustment movements allowed.

Die Erfindung wird nachfolgend anhand von zwei Ausführungsbeispielen näher beschrieben.
Es zeigen:

Figur 1:
eine vereinfachte Darstellung einer ersten Ausführungsform der geregelten Fadenbremse;
Figur 2:
eine vereinfachte Darstellung einer zweiten Ausführungsform der geregelten Fadenbremse.
The invention is described in more detail below using two exemplary embodiments.
Show it:
Figure 1:
a simplified representation of a first embodiment of the controlled thread brake;
Figure 2:
a simplified representation of a second embodiment of the controlled thread brake.

Figur 1 zeigt schematisch eine Fadenbremse 1, wie sie z.B. zum Abbremsen eines Schussfadens in einer Webmaschine verwendet werden kann. Der Faden.2 wird in Laufrichtung 3 durch die Fadenbremse geführt. Die Bremskraft B wird von zwei Betätigungselementen 8, 9 erzeugt und über zwei den Faden 2 zwischen sich aufnehmende Bremsbleche 4, 5 in den Faden 2 eingeleitet. Die Bremsbleche 4, 5 liegen sich gegenüber und sind vorzugsweise federelastisch ausgebildet, wobei sie in entsprechenden Lagerungen 6, 7, gelagert sind.
Bei geöffneter Fadenbremse läuft der Faden 2 ungehindert, ohne Kontakt zu den Bremsblechen 4, 5 und ohne Umlenkung durch die Fadenbremse hindurch.FIG. 1 schematically shows a thread brake 1 of the type that can be used, for example, to brake a weft thread in a weaving machine. The thread.2 is guided in the running direction 3 by the thread brake. The braking force B is generated by two actuating elements 8, 9 and is introduced into the thread 2 via two brake plates 4, 5 which receive the thread 2 between them. The brake plates 4, 5 lie opposite one another and are preferably designed to be resilient, wherein they are mounted in corresponding bearings 6, 7.
When the thread brake is open, the thread 2 runs unhindered, without contact with the brake plates 4, 5 and without deflection through the thread brake.

Durch Aufbringen einer Bremskraft B auf den Faden 2 wird eine Fadenspannungskraft F im Faden erzeugt, welche in den Bremsblechen 4, 5 jeweils eine in Laufrichtung 3 des Fadens wirkende Gegenkraft von F/2 erzeugt. Die Bremsbleche 4, 5 sind in Laufrichtung 3 des Fadens 2 beweglich gelagert und mechanisch mit ortsfesten Kraftaufnehmern 10, 11 gekoppelt. Die jeweils auf die Bremsbleche 4, 5 wirkende Gegenkraft F/2 ist proportional zur Fadenspannungskraft F und wird von den Kraftaufnehmern 10, 11 gemessen und einer Regelungseinrichtung zugeführt.By applying a braking force B to the thread 2, a thread tension force F generated in the thread, which in the brake plates 4, 5 each in the direction 3 of the Faden's opposing force generated by F / 2. The brake plates 4, 5 are in the running direction 3 of the thread 2 is movably supported and mechanically with fixed force transducers 10, 11 coupled. The counterforce F / 2 acting on the brake plates 4, 5 is proportional to the thread tension force F and is measured by the force transducers 10, 11 and one Control device supplied.

Die gemessene Kraft F ist unabhängig vom Fadendurchmesser und dem Reibbeiwert des Fadens 2 und der Bremselemente. Sie ist jedoch direkt proportional zu der auf den Faden ausgeübten Bremskraft B, und somit proportional zur Fadenspannung. The measured force F is independent of the thread diameter and the coefficient of friction of the Thread 2 and the braking elements. However, it is directly proportional to that on the thread applied braking force B, and thus proportional to the thread tension.

Die Regelungseinrichtung 12 regelt die Fadenspannung durch Verändern der Bremskraft B der Betätigungselemente 8, 9 in Abhängigkeit der gemessenen Kraft F derart, dass sich eine gewünschte Fadenspannung im Faden 2 einstellt.The control device 12 regulates the thread tension by changing the braking force B. of the actuating elements 8, 9 in dependence on the measured force F such that sets a desired thread tension in thread 2.

Figur 2 zeigt eine Ausgestaltung einer Fadenbremse 1 mit einem passiven Bremsblech 13 mit einstellbarer Vorspannung, das in einer ortsfesten Lagerung 13 aufgenommen ist.
Die von einem Betätigungselement 15 aufgebrachte Bremskraft B wird auf eine Bremsplatte 16 übertragen, die am Bremsblech 13 anliegt, wobei der Faden 2 zwischen Bremsblech 13 und Bremsplatte 16 hindurch geführt ist.
Die im Faden erzeugte Fadenspannungskraft F überträgt sich gleichermaßen auf das Bremsblech 13 und die Bremsplatte 16 und erzeugt hier jeweils eine Gegenkraft F/2 die von einem mit der Bremsplatte 16 mechanisch gekoppelten Kraftaufnehmer 17 gemessen und einer Regelungseinrichtung 18 zugeführt wird.Figure 2 shows an embodiment of a thread brake 1 with a passive brake plate 13 with adjustable bias, which is received in a fixed bearing 13.
The braking force B applied by an actuating element 15 is transmitted to a brake plate 16 which rests on the brake plate 13, the thread 2 being passed between the brake plate 13 and the brake plate 16.
The thread tension force F generated in the thread is transferred equally to the brake plate 13 and the brake plate 16 and in each case generates a counterforce F / 2 which is measured by a force transducer 17 mechanically coupled to the brake plate 16 and fed to a control device 18.

Die Regelungseinrichtung 18 regelt die Fadenspannung durch Verändern der Bremskraft B des Betätigungselementes 15 in Abhängigkeit der gemessenen Kraft F derart, dass sich eine gewünschte Fadenspannung im Faden 2 einstellt. The regulating device 18 regulates the thread tension by changing the braking force B. of the actuating element 15 in dependence on the measured force F such that sets a desired thread tension in thread 2.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Fadenbremsethread brake
22
Fadenthread
33
Laufrichtungdirection
44
BremsblechBremsblech
55
BremsblechBremsblech
66
Lagerungstorage
77
Lagerungstorage
88th
Betätigungselementactuator
99
Betätigungselementactuator
1010
KraftaufnehmerLoad cell
1111
KraftaufnehmerLoad cell
1212
Regelungseinrichtungcontrol device
1313
BremsblechBremsblech
1414
Lagerungstorage
1515
Betätigungselementactuator
1616
Bremsplattebrake plate
1717
KraftaufnehmerLoad cell
1818
Regelungseinrichtungcontrol device

Claims (7)

Vorrichtung zur Regelung der Fadenspannung eines Fadens bei Textilverarbeitungsmaschinen, mit mindestens einem auf den Faden wirkenden Bremselement zur Ausübung einer einstellbaren Bremskraft B auf den Faden, gekennzeichnet durch
mindestens einen mit dem Bremselement mechanisch gekoppelten Kraftaufnehmer (10; 11; 17) zur Messung einer vom Faden (2) auf das Bremselement wirkenden, in Laufrichtung (3) des Fadens gerichteten und zur Fadenspannung proportionalen Kraft F, und
eine Regelungseinrichtung (12) zur Regelung der Fadenspannung durch Verändern der Bremskraft B in Abhängigkeit der gemessenen Kraft F.Device for regulating the thread tension of a thread in textile processing machines, with at least one braking element acting on the thread for exerting an adjustable braking force B on the thread, characterized by
at least one force transducer (10; 11; 17) mechanically coupled to the braking element for measuring a force F, and acting on the braking element from the thread (2) and directed in the running direction (3) of the thread and
a regulating device (12) for regulating the thread tension by changing the braking force B as a function of the measured force F. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Bremselement zwei sich gegenüberliegende und den Faden zwischen sich aufnehmende Kraftübertragungsmittel (4, 5; 13, 16) umfasst, wobei auf wenigstens eines der Kraftübertragungsmittel (4; 5; 16) ein steuerbares Betätigungselement (8; 9; 15) einwirkt, das die Lage wenigstens eines der Kraftübertragungsmittel gegenüber dem anderen verstellt.Device according to claim 1, characterized in that the braking element comprises two opposing force transmission means (4, 5; 13, 16) receiving the thread between them, with a controllable actuating element (8 ; 9; 15) acts, which adjusts the position of at least one of the power transmission means with respect to the other. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass mindestens eines der Kraftübertragungsmittel (4; 5; 16) in Laufrichtung (3) des Fadens (2) beweglich gelagert ist.Device according to claim 1 or 2, characterized in that at least one of the force transmission means (4; 5; 16) is movably mounted in the running direction (3) of the thread (2). Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kraftaufnehmer (10; 11; 17) ein piezoelektrischer Kraftaufnehmer ist.Device according to one of claims 1 to 3, characterized in that the force transducer (10; 11; 17) is a piezoelectric force transducer. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Betätigungselement (8; 9; 15) ein piezoelektrisches Stellelement ist.Device according to one of claims 1 to 4, characterized in that the actuating element (8; 9; 15) is a piezoelectric actuating element. Verfahren zur Regelung der Fadenspannung eines Fadens bei Textilverarbeitungsmaschinen, bei dem mittels eines auf den Faden wirkenden Bremselements eine Bremskraft B auf den Faden ausgeübt wird,
dadurch gekennzeichnet, dass mittels eines Kraftaufnehmers (10; 11; 17) eine vom Faden (2) auf das Bremselement wirkende, in Laufrichtung (3) des Fadens gerichtete und zur Fadenspannung proportionale Kraft F gemessen wird, und die Fadenspannung durch Verändern der Bremskraft B in Abhängigkeit der gemessenen Kraft F geregelt wird. Method for regulating the thread tension of a thread in textile processing machines, in which a braking force B is exerted on the thread by means of a braking element acting on the thread,
characterized in that a force transducer (10; 11; 17) is used to measure a force F acting from the thread (2) on the braking element, directed in the running direction (3) of the thread and proportional to the thread tension, and the thread tension by changing the braking force B is regulated depending on the measured force F. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der Faden (2) bei geöffnetem Bremselement ungehindert und ohne Berührung und Umlenkung durch das Bremselement geführt ist.A method according to claim 6, characterized in that the thread (2) is passed through the brake element unhindered and without contact and deflection when the brake element is open.
EP03004706A 2002-04-23 2003-03-04 Device and method to regulate the yarn tension in textile machines Expired - Lifetime EP1357213B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10218059A DE10218059A1 (en) 2002-04-23 2002-04-23 Device and method for regulating the thread tension of a thread in textile processing machines
DE10218059 2002-04-23

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EP1357213A2 true EP1357213A2 (en) 2003-10-29
EP1357213A3 EP1357213A3 (en) 2004-02-11
EP1357213B1 EP1357213B1 (en) 2006-10-18

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EP (1) EP1357213B1 (en)
JP (1) JP3977276B2 (en)
AT (1) ATE343008T1 (en)
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US7543610B2 (en) * 2006-06-16 2009-06-09 Sultex Ag Thread clamp for a rapier head
EP1961686B1 (en) * 2007-02-20 2016-09-14 Iro Ab Yarn tension monitoring and setting system
US8960596B2 (en) 2007-08-20 2015-02-24 Kevin Kremeyer Energy-deposition systems, equipment and method for modifying and controlling shock waves and supersonic flow
DE102013222679A1 (en) * 2013-11-07 2015-05-07 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Method of measuring tissue tension in a loom
US10669653B2 (en) * 2015-06-18 2020-06-02 Kevin Kremeyer Directed energy deposition to facilitate high speed applications
ITUB20155266A1 (en) * 2015-10-30 2016-01-30 Roj S R L Pilot operated electromagnetic brake for checking the weft yarn tension in textile machines

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EP0296132A1 (en) * 1987-05-27 1988-12-21 Sten Ake Olaus Rydborn A thread signal emitter
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JP3977276B2 (en) 2007-09-19
JP2003313750A (en) 2003-11-06
DE10218059A1 (en) 2003-11-13
EP1357213B1 (en) 2006-10-18
ATE343008T1 (en) 2006-11-15
US20030196718A1 (en) 2003-10-23
DE50305395D1 (en) 2006-11-30
EP1357213A3 (en) 2004-02-11
US7077168B2 (en) 2006-07-18

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