EP1440929B1 - Device for control the yarn tension of a yarn being drawn of a bobbin located on a bobbin holder for a leno selvage device - Google Patents

Device for control the yarn tension of a yarn being drawn of a bobbin located on a bobbin holder for a leno selvage device Download PDF

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Publication number
EP1440929B1
EP1440929B1 EP03028793A EP03028793A EP1440929B1 EP 1440929 B1 EP1440929 B1 EP 1440929B1 EP 03028793 A EP03028793 A EP 03028793A EP 03028793 A EP03028793 A EP 03028793A EP 1440929 B1 EP1440929 B1 EP 1440929B1
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EP
European Patent Office
Prior art keywords
brake
bobbin
thread
yarn
brake drum
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EP03028793A
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German (de)
French (fr)
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EP1440929A1 (en
Inventor
Christoph Schwemmlein
Kurt Hockemeyer
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Gebrueder Kloecker GmbH
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Gebrueder Kloecker GmbH
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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
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package
    • B65H59/04—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package by devices acting on package or support
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms

Definitions

  • the invention relates to a device for adjusting the tension of a withdrawn from a yarn package of a yarn package holder thread for leno device, wherein the device comprises a brake drum which receives the yarn package holder, wherein the brake drum has a braking device and wherein the device is an elastic guide arm for the thread of Spool shows, wherein the braking device comprises a pivotable brake lever with a voltage applied to the brake drum brake shoe, wherein the brake lever has the guide arm with an eyelet for the thread withdrawn from the spool, wherein under load of the guide arm, the brake shoe is relieved by the brake lever.
  • a leno selvedge device is an example of a honeydew-halfhair combination.
  • two healdges in conjunction with a half heal, serve to produce a so-called leno selvedge.
  • Such lifting seats are attached directly or indirectly to the heald frames of a loom.
  • the leno thread is passed between half heald and huckle, the ground thread is passed through the eye of the half heald.
  • the weft thread is tied off in combination with the ground thread by the leno edge that arises in the process.
  • the leno selvedge prevents the fabric from reeling in this area
  • a device in which a similar leno selvedge is produced is characterized by two rotating arms which receive the leno threads at the end, and wherein the weft thread is tied off by the leno threads.
  • This device is also known under the name "Propellerfeler” (EP 0 839 219).
  • the threads which are fed to the leno selvedge device and which are withdrawn from a rotating yarn package are, in principle, always under a constant, continuous tension.
  • the threads are stretched jerky, in which case there is a risk of tearing, in particular with sensitive threads, for example glass fiber threads.
  • there is the risk of jerky stress with the risk of tearing of such a thread if the thread due to whatever circumstances is always tense, the voltage dissolves abruptly, and the coil runs ahead and thereby a sort of thread reserve is formed, which then after processing in turn causes a jerky tightening of the thread.
  • a device for regulating the thread tension is already known from EP 1 036 228;
  • a thread hold-down device is provided immediately in front of the leno edge device, which already regulates the thread tension immediately in front of the leno selvedge device.
  • This thread retainer is designed for this purpose elastically yielding. The arrangement of this device for regulating the thread tension immediately before the leno selvedge device ensures that the thread tension can be compensated due to the spring action of the holder at shed opening.
  • GB 541 417 A a further device for regulating the yarn tension is described, in which on the one hand the yarn tension is influenced as a function of the diameter of the yarn package, and on the other hand, the tension of the leno yarn on a guide arm causes a regulation of the yarn tension.
  • the braking effect is provided by the use of a band brake.
  • the invention is therefore an object of the invention to provide a device of the type mentioned, which causes a regulation of the thread tension, in the sense of equalizing the tension of the yarn withdrawn from the yarn package and in addition the direction of rotation of the yarn package has no effect on the Has braking effect.
  • the pivot point of the brake lever is located on a tangent, wherein the position of the tangent is determined by the intersection of the center line of the brake drum with the center line of the brake shoe.
  • halves the center line halves the brake shoe in equal parts on both sides of the center line of the brake drum. That is, at the vertex of the brake drum, the brake shoe extends in equal parts on either side of the midpoint line.
  • the spring action of the guide arm must correlate with the force exerted on the brake shoe.
  • an adjustable spring can be provided, which acts as a component of the braking device on the brake shoe. That is, it is in any case to ensure that the guide arm is deflected at voltage spikes, which act on the brake shoe, before the brake shoe lifts off the brake drum. Thus, it is possible to adjust the braking force to the specific needs of the yarn withdrawn from the yarn package.
  • the ratio of the distance between the eyelet of the guide arm and the center line of the braking device on the one hand and the pivot point of the brake lever to the center line of the braking device on the other hand has a certain ratio, and preferably between 9: 1 and 12: 1 , preferably 11: 1.
  • the length of the guide arm is in turn dependent on the elasticity of the guide arm.
  • Influence also has the diameter of the brake drum in relation to the diameter of the coil; advantageous here a ratio of the diameter of the brake drum to the diameter of the full bobbin of about 3: 1 is provided.
  • a uniform tension of the thread is also effected when the brake drum has a uniform surface on its circumference on which the brake shoe is applied.
  • pivot point of the brake lever is located on a tangent, wherein the position of the tangent is determined by the intersection of the center line of the brake drum and the center line of the brake shoes.
  • the designated with 1 brake drum is rotatably received by a holder 2, wherein via a bracket 3, the braking device 4 is held.
  • the brake drum 1 carries the yarn package 5, the yarn withdrawn from the yarn package 5 has the reference numeral 6.
  • the braking device generally designated 4, comprises the brake lever 10, which is pivotably mounted on the axle 11. It is essential now that this axis 11 lies with its center on the tangent 12.
  • the tangent 12 tangents the surface of the brake drum 1 at the intersection of the center line 13 of the brake drum 1. That is, the same braking surface of the brake shoe 14 is available on both sides of the center line 13, which is arranged on the lever 10.
  • the lever 10 itself is loaded by the spring 16, which is adjustable by means of a threaded nut 17 in its force.
  • the brake lever 10 also has the guide arm 20, the end an eyelet 21 for the thread 6 shows.
  • the thread tension is regulated in two stages, on the one hand by the guide arm 20, and on the other hand as a second stage by loosening or lifting or pivoting the brake lever 10.
  • the setting of the braking torque or the moment when the brake shoe or Brake lever 10 ultimately lifts off from the brake drum or the force acting on the brake drum force is reduced by the braking force depends, inter alia of the force of the spring 16, of the surface of the brake drum and of the size of the brake drum and also of the elasticity of the guide arm 20.
  • Essential for a uniform thread withdrawal is also the ratio of H2 to H1, which should preferably be 11: 1.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Looms (AREA)
  • Braking Arrangements (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

Yarn (6) for a twist selvedge is supplied from a bobbin (5) that can rotate on a carrier against the restraint of a brake drum (1) with a hinged, adjustably spring-loaded brake shoe (14). The action of the brake is controlled by a flexible lever arm (20) that has an eyelet (21) at its end through which the yarn (6) is drawn off. The fulcrum (11) of the brake shoe housing is along a tangent (12) to the brake drum (1) drawn at the center line (13) of the brake shoe (14). The ratio of the lever action between lever arm (H2) and brake shoe (H1) is between 9 and 12 to 1. The diameter of the brake drum (1) is about three times that of a full bobbin (5).

Description

Die Erfindung betrifft eine Vorrichtung zur Regulierung der Fadenspannung eines von einer Garnspule einer Garnspulenhalterung abgezogenen Fadens für eine Dreherkanteneinrichtung, wobei die Vorrichtung eine Bremstrommel umfasst, die die Garnspulenhalterung aufnimmt, wobei die Bremstrommel eine Bremseinrichtung aufweist und wobei die Vorrichtung einen elastischen Führungsarm für den Faden der Garnspule zeigt, wobei die Bremseinrichtung einen schwenkbaren Bremshebel mit einer an der Bremstrommel anliegenden Bremsbacke umfasst, wobei der Bremshebel den Führungsarm mit einer Öse für den von der Spule abgezogenen Faden aufweist, wobei bei Belastung des Führungsarms die Bremsbacke durch den Bremshebel entlastet wird.The invention relates to a device for adjusting the tension of a withdrawn from a yarn package of a yarn package holder thread for leno device, wherein the device comprises a brake drum which receives the yarn package holder, wherein the brake drum has a braking device and wherein the device is an elastic guide arm for the thread of Spool shows, wherein the braking device comprises a pivotable brake lever with a voltage applied to the brake drum brake shoe, wherein the brake lever has the guide arm with an eyelet for the thread withdrawn from the spool, wherein under load of the guide arm, the brake shoe is relieved by the brake lever.

Eine Dreherkanteneinrichtung stellt sich beispielhaft als Hebelitzen-Halblitzen-Kombination dar. Hierbei dienen zwei Hebelitzen in Verbindung mit einer Halblitze der Herstellung einer sogenannten Dreherkante. Derartige Hebelitzen sind unmittelbar oder mittelbar an den Webschäften einer Webmaschine befestigt. Hierbei wird zwischen Halblitze und Hebelitze der Dreherfaden geführt, wobei der Steherfaden durch die Öse der Halblitze geführt ist. Durch wechselseitiges Wandern des Dreherfadens von der einen Seite der Halblitze auf die andere Seite der Halblitze wird in Kombination mit dem Steherfaden der Schussfaden durch die hierbei entstehende Dreherkante abgebunden. Durch die Dreherkante wird verhindert, dass das Gewebe in diesem Bereich aufriffeltA leno selvedge device is an example of a honeydew-halfhair combination. In this case, two healdges, in conjunction with a half heal, serve to produce a so-called leno selvedge. Such lifting seats are attached directly or indirectly to the heald frames of a loom. Here, the leno thread is passed between half heald and huckle, the ground thread is passed through the eye of the half heald. By mutual migration of the leno thread from one side of the half heald to the other side of the healn heald, the weft thread is tied off in combination with the ground thread by the leno edge that arises in the process. The leno selvedge prevents the fabric from reeling in this area

Eine Vorrichtung, bei der eine ähnliche Dreherkante erzeugt wird, zeichnet sich durch zwei rotierende Arme aus, die endseitig die Dreherfäden aufnehmen, und wobei durch die Dreherfäden der Schussfaden abgebunden wird. Diese Vorrichtung ist auch unter der Bezeichnung "Propellerdreher" (EP 0 839 219) bekannt.A device in which a similar leno selvedge is produced, is characterized by two rotating arms which receive the leno threads at the end, and wherein the weft thread is tied off by the leno threads. This device is also known under the name "Propellerdreher" (EP 0 839 219).

Wesentlich ist nun, dass die Fäden, die der Dreherkantenvorrichtung zugeführt werden, und die von einer rotierenden Garnspule abgezogen werden, vom Grundsatz her immer unter einer gleichbleibenden kontinuierlichen Spannung stehen. Insbesondere ist zu vermeiden, dass die Fäden ruckhaft gespannt werden, wobei dann insbesondere bei empfindlichen Fäden, beispielsweise Glasfaserfäden, die Gefahr des Reißens besteht. Insbesondere besteht die Gefahr der ruckhaften Beanspruchung mit der Gefahr des Reißens eines solchen Fadens dann, wenn der Faden aufgrund welcher Umstände auch immer gespannt wird, die Spannung sich abrupt löst, und die Spule vorläuft und hierdurch gewissermaßen eine Fadenreserve gebildet wird, die dann nach Abarbeitung wiederum ein ruckhaftes Anziehen des Fadens bewirkt.It is essential that the threads which are fed to the leno selvedge device and which are withdrawn from a rotating yarn package are, in principle, always under a constant, continuous tension. In particular, it should be avoided that the threads are stretched jerky, in which case there is a risk of tearing, in particular with sensitive threads, for example glass fiber threads. In particular, there is the risk of jerky stress with the risk of tearing of such a thread, if the thread due to whatever circumstances is always tense, the voltage dissolves abruptly, and the coil runs ahead and thereby a sort of thread reserve is formed, which then after processing in turn causes a jerky tightening of the thread.

Insofern ist bereits aus der EP 1 036 228 eine Vorrichtung zur Regulierung der Fadenspannung bekannt; hierbei ist unmittelbar vor der Dreherkantenvorrichtung ein Fadenniederhalter vorgesehen, der bereits die Fadenspannung unmittelbar vor der Dreherkanteneinrichtung reguliert. Dieser Fadenniederhalter ist zu diesem Zwecke elastisch nachgiebig ausgebildet. Durch die Anordnung dieser Vorrichtung zur Regulierung der Fadenspannung unmittelbar vor der Dreherkantenvorrichtung wird erreicht, dass die Fadenspannung aufgrund der Federwirkung der Halterung bei Fachöffnung ausgeglichen werden kann.In this respect, a device for regulating the thread tension is already known from EP 1 036 228; In this case, a thread hold-down device is provided immediately in front of the leno edge device, which already regulates the thread tension immediately in front of the leno selvedge device. This thread retainer is designed for this purpose elastically yielding. The arrangement of this device for regulating the thread tension immediately before the leno selvedge device ensures that the thread tension can be compensated due to the spring action of the holder at shed opening.

In der GB 541 417 A ist eine weitere Vorrichtung zur Regulierung der Fadenspannung beschrieben, bei der zum einen die Fadenspannung in Abhängigkeit des Durchmessers der Garnspule beeinflusst wird, und zum anderen durch die Spannung des Dreherfadens auf einen Führungsarm eine Regulierung der Fadenspannung stattfindet. Die Bremswirkung wird durch den Einsatz einer Bandbremse bereitgestellt.In GB 541 417 A a further device for regulating the yarn tension is described, in which on the one hand the yarn tension is influenced as a function of the diameter of the yarn package, and on the other hand, the tension of the leno yarn on a guide arm causes a regulation of the yarn tension. The braking effect is provided by the use of a band brake.

Aus der GB 406 931 A ist eine Vorrichtung der eingangs genannten Art bekannt, bei der allerdings die Drehrichtung der Garnspule Einfluss auf die Bremskraft hat. Das heißt, es muss sichergestellt sein, dass die Garnspulen nur in einer bestimmten Drehrichtung ablaufen können.From GB 406 931 A a device of the aforementioned type is known in which, however, the direction of rotation of the yarn package has an influence on the braking force. This means that it must be ensured that the bobbins can only run in a certain direction of rotation.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art bereitzustellen, die eine Regulierung der Fadenspannung bewirkt, und zwar im Sinne einer Vergleichmäßigung der Spannung des von der Garnspule abgezogenen Fadens und bei der darüber hinaus die Drehrichtung der Garnspule keinen Einfluss auf die Bremswirkung hat.The invention is therefore an object of the invention to provide a device of the type mentioned, which causes a regulation of the thread tension, in the sense of equalizing the tension of the yarn withdrawn from the yarn package and in addition the direction of rotation of the yarn package has no effect on the Has braking effect.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Drehpunkt des Bremshebels auf einer Tangente liegt, wobei die Lage der Tangente durch den Schnittpunkt der Mittelpunktslinie der Bremstrommel mit der Mittellinie der Bremsbacke bestimmt ist. Hierbei halbiert die Mittellinie die Bremsbacke zu gleichen Teilen auf beiden Seiten der Mittelpunktlinie der Bremstrommel. Das heißt, dass auf dem Scheitelpunkt der Bremstrommel sich die Bremsbacke zu gleichen Teilen zu beiden Seiten der Mittelpunktslinie erstreckt. Vorteilhaft bei dieser Ausgestaltung ist hierbei insbesondere auch, dass dann für die Bremswirkung völlig gleich ist, zu welcher Richtung die Bremstrommel dreht. Es findet kein Auf- bzw. Ablaufen der Bremsbacke auf der Bremstrommel statt. Die Bremswirkung bleibt immer gleich.The object is achieved in that the pivot point of the brake lever is located on a tangent, wherein the position of the tangent is determined by the intersection of the center line of the brake drum with the center line of the brake shoe. Here, halves the center line halves the brake shoe in equal parts on both sides of the center line of the brake drum. That is, at the vertex of the brake drum, the brake shoe extends in equal parts on either side of the midpoint line. An advantage of this embodiment is in particular also that then for the braking effect is completely equal to which direction the brake drum rotates. It there is no rise or fall of the brake shoe on the brake drum. The braking effect always remains the same.

In der Zusammenwirkung der Bremse des Bremshebels mit dem Führungsarm, der den Faden aufnimmt, wird insbesondere eine Vergleichmäßigung der Spannung des von der Garnspule abgezogenen Fadens erreicht. Dies insofern, als bei Auftreten von Spannung diese Spannung von dem federnd elastisch ausgebildeten Führungsarm aufgenommen wird, wobei dann, auch gleichzeitig die Bremsbacke des Bremshebels von der Bremstrommel gelöst bzw. im Extremfall sogar abgehoben wird. Das bedeutet, dass bei unter Spannung stehenden Fäden sich der Führungsarm, der, wie bereits ausgeführt, elastisch nachgiebig ausgebildet ist, in Richtung der einwirkenden Kraft verbiegt, wobei gleichzeitig dann aufgrund dieser Kraft der Bremshebel, der mit dem Führungsarm eine Einheit bildet, seine Kraft auf die Bremstrommel vermindert bzw. abgehoben wird, und hiermit die Bremswirkung auf die Bremstrommel vermindert bzw. im Extremfall sogar aufgehoben wird. Die Federwirkung des Führungsarmes muss hierbei mit der Kraft korrelieren, die auf die Bremsbacke ausgeübt wird. Hierbei kann insbesondere eine einstellbare Feder vorgesehen sein, die als Bestandteil der Bremseinrichtung auf die Bremsbacke wirkt. Das heißt, es ist in jedem Fall sicherzustellen, dass der Führungsarm bei Spannungsspitzen, die auf die Bremsbacke wirken, ausgelenkt wird, bevor die Bremsbacke von der Bremstrommel abhebt. Es besteht somit die Möglichkeit, die Bremskraft auf die spezifischen Bedürfnisse des von der Garnspule abgezogenen Fadens einzustellen.In the interaction of the brake of the brake lever with the guide arm, which receives the thread, in particular equalization of the tension of the withdrawn from the yarn package thread is achieved. This insofar as when tension occurs, this tension is absorbed by the spring-elastic guide arm, in which case, at the same time, the brake shoe of the brake lever is released from the brake drum or, in the extreme case, even lifted off. This means that when the threads are under tension, the guide arm, which, as already stated, is elastically yielding, bends in the direction of the applied force, at the same time then due to this force, the brake lever, which forms a unit with the guide arm, its force is reduced or lifted to the brake drum, and hereby the braking effect on the brake drum is reduced or even canceled in extreme cases. The spring action of the guide arm must correlate with the force exerted on the brake shoe. In this case, in particular, an adjustable spring can be provided, which acts as a component of the braking device on the brake shoe. That is, it is in any case to ensure that the guide arm is deflected at voltage spikes, which act on the brake shoe, before the brake shoe lifts off the brake drum. Thus, it is possible to adjust the braking force to the specific needs of the yarn withdrawn from the yarn package.

Insbesondere ist wesentlich, dass das Verhältnis des Abstandes zwischen der Öse des Führungsarmes und der Mittelpunktlinie der Bremseinrichtung einerseits und des Drehpunktes des Bremshebels zur Mittelpunktlinie der Bremseinrichtung andererseits (H2 zu H1) ein bestimmtes Verhältnis aufweist und vorzugsweise zwischen 9:1 und 12:1 liegt, bevorzugt 11:1 beträgt. Die Länge des Führungsarmes ist wiederum abhängig von der Elastizität des Führungsarmes. Einfluss hat ebenfalls auch der Durchmesser der Bremstrommel im Verhältnis zum Durchmesser der Spule; vorteilhaft ist hierbei ein Verhältnis vom Durchmesser der Bremstrommel zum Durchmesser der vollen Spule von etwa 3:1 vorgesehen. Eine gleichmäßige Spannung des Fadens wird ebenfalls dann bewirkt, wenn die Bremstrommel auf ihrem Umfang, auf dem die Bremsbacke anliegt, eine gleichmäßige Oberfläche aufweist.In particular, it is essential that the ratio of the distance between the eyelet of the guide arm and the center line of the braking device on the one hand and the pivot point of the brake lever to the center line of the braking device on the other hand (H2 to H1) has a certain ratio, and preferably between 9: 1 and 12: 1 , preferably 11: 1. The length of the guide arm is in turn dependent on the elasticity of the guide arm. Influence also has the diameter of the brake drum in relation to the diameter of the coil; advantageous here a ratio of the diameter of the brake drum to the diameter of the full bobbin of about 3: 1 is provided. A uniform tension of the thread is also effected when the brake drum has a uniform surface on its circumference on which the brake shoe is applied.

Insbesondere vorteilhaft ist, wenn der Drehpunkt des Bremshebels auf einer Tangente liegt, wobei die Lage der Tangente durch den Schnittpunkt der Mittelpunktlinie der Bremstrommel und der Mittellinie der Bremsbacken bestimmt ist.It is particularly advantageous if the pivot point of the brake lever is located on a tangent, wherein the position of the tangent is determined by the intersection of the center line of the brake drum and the center line of the brake shoes.

Weitere vorteilhafte Merkmale sind den Unteransprüchen zu entnehmen.Further advantageous features can be found in the dependent claims.

Anhand der Zeichnungen wird die Erfindung nachstehend beispielhaft näher erläutert:

Figur 1
zeigt die Bremseinrichtung in einer Seitenansicht;
Figur 2
zeigt eine Ansicht von oben.
With reference to the drawings, the invention is explained in more detail below by way of example:
FIG. 1
shows the braking device in a side view;
FIG. 2
shows a view from above.

Die mit 1 bezeichnete Bremstrommel ist durch eine Halterung 2 drehbar aufgenommen, wobei über einen Bügel 3 die Bremseinrichtung 4 gehalten ist. Die Bremstrommel 1 trägt die Garnspule 5, der von der Garnspule 5 abgezogene Faden besitzt das Bezugszeichen 6. Die insgesamt mit 4 bezeichnete Bremseinrichtung umfasst den Bremshebel 10, der auf der Achse 11 verschwenkbar gelagert ist. Wesentlich ist nunmehr, dass diese Achse 11 mit ihrem Mittelpunkt auf der Tangente 12 liegt. Die Tangente 12 tangiert die Oberfläche der Bremstrommel 1 im Schnittpunkt der Mittelpunktslinie 13 der Bremstrommel 1. Das heißt, dass zu beiden Seiten der Mittelpunktslinie 13 die gleiche Bremsfläche der Bremsbacke 14 zur Verfügung steht, die an dem Hebel 10 angeordnet ist. Der Hebel 10 selbst wird durch die Feder 16 belastet, die mittels einer auf einem Gewinde angeordneten Mutter 17 in ihrer Kraft einstellbar ist. Der Bremshebel 10 besitzt darüber hinaus den Führungsarm 20, der endseitig eine Öse 21 für den Faden 6 zeigt.The designated with 1 brake drum is rotatably received by a holder 2, wherein via a bracket 3, the braking device 4 is held. The brake drum 1 carries the yarn package 5, the yarn withdrawn from the yarn package 5 has the reference numeral 6. The braking device, generally designated 4, comprises the brake lever 10, which is pivotably mounted on the axle 11. It is essential now that this axis 11 lies with its center on the tangent 12. The tangent 12 tangents the surface of the brake drum 1 at the intersection of the center line 13 of the brake drum 1. That is, the same braking surface of the brake shoe 14 is available on both sides of the center line 13, which is arranged on the lever 10. The lever 10 itself is loaded by the spring 16, which is adjustable by means of a threaded nut 17 in its force. The brake lever 10 also has the guide arm 20, the end an eyelet 21 for the thread 6 shows.

Die Funktionsweise der Vorrichtung stellt sich nun wie folgt dar:The operation of the device is now as follows:

Gerät der Faden 6 unter Zug, dann verschwenkt der Führungsarm 20 in Richtung des Pfeils 30. Steigt die Spannung am Führungsarm 20, dann wird der Hebel 10 in Richtung des Pfeils 31 verschwenkt, wobei dann die Bremsbacke 14 die Oberfläche der Bremstrommel entlastet, bzw. von der Oberfläche der Bremstrommel im Extremfall abhebt, wenn nämlich die Fadenspannung zu groß wird. Lässt die Fadenspannung nach, dann legt sich danach die Bremsbacke 14 wieder an die Oberfläche der Bremstrommel 1 an, wobei auch die Spannung im Führungsarm 20 nachlässt, und dieser schlussendlich in seine Ausgangsstellung zurückgelangt.Device of the thread 6 under train, then pivots the guide arm 20 in the direction of arrow 30. If the voltage rises on the guide arm 20, then the lever 10 is pivoted in the direction of arrow 31, in which case the brake shoe 14 relieves the surface of the brake drum, or lifts off the surface of the brake drum in extreme cases, namely, if the thread tension is too large becomes. If the thread tension lags, then the brake shoe 14 then abuts against the surface of the brake drum 1 again, wherein the tension in the guide arm 20 also decreases, and this finally returns to its starting position.

Wesentlich ist, dass die Fadenspannung zweistufig reguliert wird, und zwar zum einen durch den Führungsarm 20, und zum anderen als zweite Stufe durch Lösen bzw. Abheben oder Verschwenken des Bremshebels 10. Die Einstellung des Bremsmomentes bzw. des Momentes, wann die Bremsbacke bzw. Bremshebel 10 schlussendlich von der Bremstrommel abhebt bzw. die auf die Bremstrommel durch die Bremskraft einwirkende Kraft vermindert wird, ist abhängig u.a. von der Kraft der Feder 16, von der Oberfläche der Bremstrommel und von der Größe der Bremstrommel bzw. auch von der Elastizität des Führungsarmes 20. Wesentlich für einen gleichmäßigen Fadenabzug ist ebenfalls das Verhältnis von H2 zu H1, das bevorzugt 11:1 betragen soll. Insbesondere durch die Lagerung des Bremshebels 10 auf der zuvor beschriebenen Tangente 12 wird erreicht, dass unabhängig von der Drehrichtung der Trommel die Bremswirkung immer gleich ist, da ein Auf- bzw. Ablaufen der Bremsbacke auf der Trommel nicht zu befürchten ist.It is essential that the thread tension is regulated in two stages, on the one hand by the guide arm 20, and on the other hand as a second stage by loosening or lifting or pivoting the brake lever 10. The setting of the braking torque or the moment when the brake shoe or Brake lever 10 ultimately lifts off from the brake drum or the force acting on the brake drum force is reduced by the braking force depends, inter alia of the force of the spring 16, of the surface of the brake drum and of the size of the brake drum and also of the elasticity of the guide arm 20. Essential for a uniform thread withdrawal is also the ratio of H2 to H1, which should preferably be 11: 1. In particular, by the storage of the brake lever 10 on the tangent 12 described above is achieved that regardless of the direction of rotation of the drum, the braking effect is always the same, as an increase or expiration of the brake shoe on the drum is not to be feared.

Claims (6)

  1. An apparatus for regulating the tension of a thread (6) unwound from a bobbin of a bobbin-holder for a leno selvedge apparatus, said apparatus comprising a brake drum (1) for receiving the bobbin-holder, said brake drum (1) having a brake device and said apparatus exhibiting an elastic guide arm (20) for the thread of the bobbin (5), said brake device (4) comprising a pivotable brake lever (10) having a brake shoe (14) resting against said brake drum (1), with said brake lever (10) having said guide arm (20) provided with an eye (21) for passage of the thread (6) unwound from the bobbin (5), said brake shoe being unloaded by the brake lever when the guide arm is loaded,
    characterized in
    that the fulcrum of said brake lever (10) lies on a tangent (12), with the position of said tangent (12) being determined by the intersection of the center point line (13) of said brake drum (1) and the center line of said brake shoe (14).
  2. The apparatus according to claim 1,
    characterized in
    that the brake shoe (14) is under the action of a force and, more specifically, is spring-loaded.
  3. The apparatus according to claim 2,
    characterized in that
    the force, more specifically the force of the spring, of the brake device is adjustable to the brake shoe (14).
  4. The apparatus according to any one of the claims 1 - 3,
    characterized in
    that the ratio of the distance between the eye (21) of the guide arm (20) and the center point line (13) of the brake device (4) on the one side and of the fulcrum of the brake lever (10) to the center point line (13) of the brake device on the other side (H2 to H1) is comprised between 9:1 and 12:1.
  5. The device according to claim 1,
    characterized in
    that the brake drum (1) has a uniform surface on its circumference against which the brake shoe (14) is resting.
  6. The device according to claim 1,
    characterized in
    that the diameter of the brake drum (1) is approximately three times the diameter of a full bobbin (5).
EP03028793A 2003-01-23 2003-12-13 Device for control the yarn tension of a yarn being drawn of a bobbin located on a bobbin holder for a leno selvage device Expired - Lifetime EP1440929B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10302730A DE10302730A1 (en) 2003-01-23 2003-01-23 Device for regulating the thread tension of a thread drawn from a thread spool of a thread spool holder for a leno selvedge device
DE10302730 2003-01-23

Publications (2)

Publication Number Publication Date
EP1440929A1 EP1440929A1 (en) 2004-07-28
EP1440929B1 true EP1440929B1 (en) 2006-08-30

Family

ID=32520087

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Application Number Title Priority Date Filing Date
EP03028793A Expired - Lifetime EP1440929B1 (en) 2003-01-23 2003-12-13 Device for control the yarn tension of a yarn being drawn of a bobbin located on a bobbin holder for a leno selvage device

Country Status (7)

Country Link
US (1) US7040354B2 (en)
EP (1) EP1440929B1 (en)
JP (1) JP4157046B2 (en)
CN (1) CN100339285C (en)
AT (1) ATE338003T1 (en)
DE (2) DE10302730A1 (en)
RU (1) RU2280005C2 (en)

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Publication number Priority date Publication date Assignee Title
DE102020100857A1 (en) 2020-01-15 2021-07-15 Gebrüder Klöcker GmbH Textile fabric with warp and weft threads

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ATE446399T1 (en) * 2004-12-31 2009-11-15 Dornier Gmbh Lindauer LONE WEAVE AND METHOD AND WEAVING MACHINE FOR THE PRODUCTION THEREOF
CN100467688C (en) * 2005-04-12 2009-03-11 洪桂焕 Automatic stop device for radial unwinding bobbin of warping machine
CN102505318A (en) * 2011-11-06 2012-06-20 张洪周 Automatic adjusting device for passive yarn feeding resistance of reels
DE102012009420A1 (en) * 2012-05-11 2013-11-14 Gebrüder Klöcker GmbH Device for producing a fabric
EP3162934B1 (en) * 2015-10-28 2018-03-28 Gebrüder Klöcker GmbH Device for forming a leno selvedge, in particular for a loom, and projectile weaving loom equipped with said device
JP6344411B2 (en) * 2016-02-25 2018-06-20 株式会社豊田自動織機 Warp opening device for loom
CN105951229A (en) * 2016-07-18 2016-09-21 吴江福爱梁纺织有限公司 Broken yarn type laminated yarn tension control float

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DE102020100857A1 (en) 2020-01-15 2021-07-15 Gebrüder Klöcker GmbH Textile fabric with warp and weft threads

Also Published As

Publication number Publication date
RU2280005C2 (en) 2006-07-20
US7040354B2 (en) 2006-05-09
JP4157046B2 (en) 2008-09-24
RU2004101386A (en) 2005-07-10
EP1440929A1 (en) 2004-07-28
DE10302730A1 (en) 2004-08-12
CN1517291A (en) 2004-08-04
JP2004225236A (en) 2004-08-12
US20040154680A1 (en) 2004-08-12
DE50304842D1 (en) 2006-10-12
CN100339285C (en) 2007-09-26
ATE338003T1 (en) 2006-09-15

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