EP1304407A2 - Process and device to influence the braking force of a yarn brake which is arranged between a yarn supply system and a yarn storage in a weaving machine - Google Patents

Process and device to influence the braking force of a yarn brake which is arranged between a yarn supply system and a yarn storage in a weaving machine Download PDF

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Publication number
EP1304407A2
EP1304407A2 EP02020032A EP02020032A EP1304407A2 EP 1304407 A2 EP1304407 A2 EP 1304407A2 EP 02020032 A EP02020032 A EP 02020032A EP 02020032 A EP02020032 A EP 02020032A EP 1304407 A2 EP1304407 A2 EP 1304407A2
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EP
European Patent Office
Prior art keywords
yarn
brake
weft
thread
yarn supply
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.)
Withdrawn
Application number
EP02020032A
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German (de)
French (fr)
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EP1304407A3 (en
Inventor
Herbert Reinhardt
Werner Birner
Christian Hannes
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP1304407A2 publication Critical patent/EP1304407A2/en
Publication of EP1304407A3 publication Critical patent/EP1304407A3/en
Withdrawn legal-status Critical Current

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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
    • B65H59/18—Driven rotary elements
    • 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
    • B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
    • 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 method and a device for influencing the Thread braking force one between a yarn supply system and one Thread store of a weft brake arranged in a loom, according to the preamble of claim 1.
  • the weft thread is drawn off from a fixedly arranged yarn supply system which, for example, comprises one or more yarn supply bobbins. Due to the high take-off speed during the weft insertion in rapier and rifle shooter looms and due to the non-positive weft insertion in air and water jet looms, thread stores, also referred to as pre-winding devices, are used, the required thread length being deducted from a reserve thread which is located on a drum of the thread store , The thread length then results from the number of windings drawn off and the drum diameter. In the case of elastic yarns, the winding tension of the thread on the drum can influence the thread length to be entered in the shed more or less.
  • the running behavior of the yarn from a yarn supply spool is variable.
  • the thread tension at a given take-off speed is lower with a full bobbin than with a bobbin with a low thread supply.
  • unregulated thread brake systems are currently used, which are set to "brake" so strongly that the thread tension generated thereby is higher than the maximum natural thread tension that occurs when the thread is taken off the spool of thread.
  • Yarn weak points are created that lead to thread breaks when the weft is inserted. Many weavers try to work without a break-in brake. The weft yarn is treated more gently. However, the yarn length has fluctuations that increase the yarn length drop.
  • the object of the invention is that by the deduction of the yarn bobbin and mechanical use caused by thread braking systems Strain on the weft thread in the area between the yarn supply spool and to reduce the thread storage and the winding tension in Keep thread store essentially constant so that yarn waste is low to keep.
  • Thread tension can be regulated.
  • Spool overflow sensor changes from empty to full when the spool overflows Supply reel switched to adjustable infeed braking. Subsequently the control takes over its task for the fine adjustment of the braking force.
  • any type of thread brake that can vary in braking force can be used be used.
  • a leaf spring brake or a Wrapping brake used.
  • a weft thread 4 is made by one Yarn supply spool 2 of a yarn supply system withdrawn and over a Weft brake 5 and 16 guided to a thread store 11, on the Drum 12 wound up a thread length required for the weft insertion is before it through an entry member 13 in the loom of the loom is introduced.
  • the aim is to have the winding tension on the drum 12 to keep the thread store 11 as constant as possible in order to maintain a constant one Ensure the entry length of the weft thread 4.
  • this is achieved in that the thread tension of the Weft 4 in front of the thread store 11 with the help of a Thread tension sensor 10 is measured.
  • the measurement signals are electronically forwarded to a control device 14, which is preferably is part of the weaving machine control.
  • the control device the measured actual thread tension is compared with a target thread tension. If the actual thread tension deviates from the nominal thread tension, the Control device 14 outputs a signal which is used for regulation or Correction of the braking force of the weft brake 5 or 16 is used until the target thread tension is set.
  • Corresponding setpoint specifications and others, including the one used Yarn-dependent setting parameters can be made by the weaver via an input unit 15 are entered, which are part of a higher-level input unit of the Loom can be.
  • the weft brake is designed as a leaf spring brake 5 and comprises a fixed brake part 6 and one designed as a leaf spring movable brake part 7.
  • the weft 4 is between the stationary brake part 6 and the movable brake part 7 passed.
  • a motor 9 and an eccentric 8 the Contact force of the movable brake part 7 on the fixed brake part 6 can be set, whereby the braking force on the Weft 4 changed.
  • FIG. 2 shows a belt brake 16 Weft brake.
  • This comprises a disc-shaped, fixed one Brake part 17 and a disc-shaped, movable brake part 18, both are connected to each other via an axis.
  • the weft 4 is each passed through an eyelet on the edge of the disk-like parts 17, 18.
  • the movable disc part 18 can be compared to the fixed part 17 are rotated, whereby the weft 4 more or is less wrapped around the connecting axis, so that the Braking force on the weft 4 changed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

To control the braking action on a weft yarn (4), between the supply bobbin (1,2) and the yarn store (11) at a shuttleless loom, the braking force at the weft brake (5) is set to give a constant yarn tension in the windings around the yarn store. The weft brake is controlled through a yarn tension sensor (10), which passes the yarn tension measurements to a control unit (14) to set the yarn brake accordingly. A sensor (3) at the bobbins registers the change from an empty bobbin to a replacement full bobbin, to activate the control to set an initial and adjustable braking level at the yarn brake. The weft brake is a leaf spring, or a brake which takes the weft in a loop around it.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Beeinflussung der Fadenbremskraft einer zwischen einem Garnvorratssystem und einem Fadenspeicher einer Webmaschine angeordneten Schussfadenbremse, nach dem Oberbegriff des Anspruchs 1.The invention relates to a method and a device for influencing the Thread braking force one between a yarn supply system and one Thread store of a weft brake arranged in a loom, according to the preamble of claim 1.

Bei schützenlosen Webmaschinen wird der Schussfaden von einem ortsfest angeordneten Garnvorratssystem, das z.B. eine oder mehrere Garnvorratsspulen umfasst, abgezogen. Aufgrund der hohen Abzugsgeschwindigkeit während des Schusseintrages bei Greifer- und Greiferschützenwebmaschinen und aufgrund des kraftschlüssigen Schusseintrags bei Luft - und Wasserdüsenwebmaschinen werden Fadenspeicher, auch bezeichnet als Vorspulgeräte, eingesetzt, wobei die erforderliche Fadenlänge aus einer Reservewindung abgezogen wird, die sich auf einer Trommel des Fadenspeichers befindet. Die Fadenlänge ergibt sich dann aus der Anzahl der abgezogenen Windungen und dem Trommeldurchmesser. Bei elastischen Garnen kann die Wickelspannung des Fadens auf der Trommel die in das Webfach einzutragende Fadenlänge mehr oder weniger stark beeinflussen.
Das Ablaufverhalten des Garnes von einer Garnvorratsspule ist veränderlich. Die Fadenspannung bei einer vorgegebenen Abzugsgeschwindigkeit ist bei voller Spule niedriger als bei einer Spule mit geringem Garnvorrat. Um die nachteiligen Fadenspannungsveränderungen und die sich daraus ergebenden unterschiedlichen Fadenlängen auszuschalten, werden derzeit ungeregelte Fadenbremssysteme verwendet, die so stark auf "bremsen" eingestellt sind, dass die dadurch erzeugte Fadenspannung höher ist als die maximal auftretende natürliche Fadenspannung beim Abzug von der Garnvorratsspule. Das bedeutet aber, dass das Garn mehr beansprucht wird als notwendig wäre. Es werden Garnschwachstellen erzeugt, die beim Schusseintrag zu Fadenbrüchen führen. Viele Weber versuchen auch ohne Einlaufbremse zu arbeiten. Dabei wird das Schussgarn schonender behandelt. Jedoch weist die Garnlänge Schwankungen auf, die den Garnlängenabfall vergrößern.In the case of defenseless weaving machines, the weft thread is drawn off from a fixedly arranged yarn supply system which, for example, comprises one or more yarn supply bobbins. Due to the high take-off speed during the weft insertion in rapier and rifle shooter looms and due to the non-positive weft insertion in air and water jet looms, thread stores, also referred to as pre-winding devices, are used, the required thread length being deducted from a reserve thread which is located on a drum of the thread store , The thread length then results from the number of windings drawn off and the drum diameter. In the case of elastic yarns, the winding tension of the thread on the drum can influence the thread length to be entered in the shed more or less.
The running behavior of the yarn from a yarn supply spool is variable. The thread tension at a given take-off speed is lower with a full bobbin than with a bobbin with a low thread supply. In order to eliminate the disadvantageous thread tension changes and the resulting different thread lengths, unregulated thread brake systems are currently used, which are set to "brake" so strongly that the thread tension generated thereby is higher than the maximum natural thread tension that occurs when the thread is taken off the spool of thread. However, this means that the yarn is subjected to more stress than would be necessary. Yarn weak points are created that lead to thread breaks when the weft is inserted. Many weavers try to work without a break-in brake. The weft yarn is treated more gently. However, the yarn length has fluctuations that increase the yarn length drop.

Aufgabe der Erfindung ist es, die durch den Abzug von der Garnvorratsspule und den Einsatz von Fadenbremssystemen hervorgerufene mechanische Beanspruchung des Schussfadens im Bereich zwischen der Garnvorratsspule und dem Fadenspeicher zu verringern und die Wickelspannung im Fadenspeicher im wesentlichen konstant zu halten, um so den Garnabfall gering zu halten.The object of the invention is that by the deduction of the yarn bobbin and mechanical use caused by thread braking systems Strain on the weft thread in the area between the yarn supply spool and to reduce the thread storage and the winding tension in Keep thread store essentially constant so that yarn waste is low to keep.

Erfindungsgemäß wird diese Aufgabe durch die im Patentanspruch 1 angegebenen Merkmale gelöst.According to the invention, this object is achieved by the in claim 1 specified features solved.

Mit Hilfe des vorgeschlagenen Bremssystems kann die erforderliche Bremskraft in Abhängigkeit einer mit einem Fadenspannungssensor gemessenen Fadenspannung geregelt werden. Durch Einbeziehung eines Spulenüberlaufsensors wird beim Spulenüberlauf von leerer auf volle Vorratsspule auf eine einstellbare Einlaufbremsung umgeschaltet. Anschließend übernimmt die Regelung ihre Aufgabe für die Feineinstellung der Bremskraft.With the help of the proposed braking system, the required braking force depending on one measured with a thread tension sensor Thread tension can be regulated. By including one Spool overflow sensor changes from empty to full when the spool overflows Supply reel switched to adjustable infeed braking. Subsequently the control takes over its task for the fine adjustment of the braking force.

Damit wird gewährleistet, dass der Schussfaden nur soviel gebremst wird wie es für eine konstante Wickelspannung am Fadenspeicher erforderlich ist. Das heißt beim Abziehen des Schußgarns von einer vollen Vorratsspule, wird mehr gebremst, wogegen beim Abziehen des Schußgarnes von einer nahezu leeren Vorratsspule sich die Bremse in nahezu geöffnetem Zustand befindet.This ensures that the weft thread is only braked as much as it is is required for a constant winding tension on the thread store. This means pulling the weft from a full supply spool will add more braked, while pulling the weft from an almost empty Supply spool the brake is almost open.

Dadurch, dass der Schussfaden erfindungsgemäß nur so viel wie nötig gebremst wird, wird die Garnbeanspruchung optimiert und die Wickelspannung am Fadenspeicher konstant gehalten, womit die Abfalllänge auf die minimal erforderliche Länge konstant bleibt.The fact that according to the invention the weft thread is braked only as much as necessary the yarn load is optimized and the winding tension on Thread store kept constant, which keeps the waste length to a minimum required length remains constant.

Grundsätzlich kann jede Art einer in der Bremskraft veränderlichen Fadenbremse verwendet werden. Vorzugsweise wird eine Blattfederbremse oder eine Umschlingungsbremse verwendet.In principle, any type of thread brake that can vary in braking force can be used be used. A leaf spring brake or a Wrapping brake used.

Die Erfindung wird nachfolgend anhand von zwei Ausführungsbeispielen mit Bezugnahme auf die Zeichnungen näher beschrieben.
Dabei zeigt:

Figur 1:
eine schematische Darstellung des Schussfadenverlaufs zwischen Garnvorratsspule und Eintragsorgan mit einer ersten Ausführungsform der erfindungsgemäßen, geregelten Fadenbremse; und
Figur 2:
eine schematische Darstellung des Schussfadenverlaufs zwischen Garnvorratsspule und Eintragsorgan mit einer zweiten Ausführungsform der erfindungsgemäßen, geregelten Fadenbremse.
The invention is described below using two exemplary embodiments with reference to the drawings.
It shows:
Figure 1:
is a schematic representation of the weft thread course between the yarn supply bobbin and the entry member with a first embodiment of the regulated thread brake according to the invention; and
Figure 2:
is a schematic representation of the weft thread course between the yarn supply bobbin and the entry member with a second embodiment of the regulated thread brake according to the invention.

Wie aus den Figuren 1 und 2 ersichtlich ist, wird ein Schussfaden 4 von einer Garnvorratsspule 2 eines Garnvorratssystems abgezogen und über eine Schussfadenbremse 5 bzw. 16 zu einem Fadenspeicher 11 geführt, auf dessen Trommel 12 eine für den Schusseintrag erforderliche Fadenlänge aufgespult wird, bevor sie durch ein Eintragsorgan 13 in das Webfach der Webmaschine eingebracht wird. Es wird angestrebt, die Wickelspannung auf der Trommel 12 des Fadenspeichers 11 möglichst konstant zu halten, um eine gleichbleibende Eintragslänge des Schussfadens 4 sicherzustellen.As can be seen from FIGS. 1 and 2, a weft thread 4 is made by one Yarn supply spool 2 of a yarn supply system withdrawn and over a Weft brake 5 and 16 guided to a thread store 11, on the Drum 12 wound up a thread length required for the weft insertion is before it through an entry member 13 in the loom of the loom is introduced. The aim is to have the winding tension on the drum 12 to keep the thread store 11 as constant as possible in order to maintain a constant one Ensure the entry length of the weft thread 4.

Erfindungsgemäß wird dies dadurch erreicht, dass die Fadenspannung des Schussfadens 4 vor dem Fadenspeicher 11 mit Hilfe eines Fadenspannungssensors 10 gemessen wird. Die Messsignale werden elektronisch an eine Steuerungseinrichtung 14 weitergeleitet, die vorzugsweise ein Teil der Webmaschinensteuerung darstellt. In der Steuerungseinrichtung wird die gemessene Ist-Fadenspannung mit einer Soll-Fadenspannung verglichen. Weicht die Ist-Fadenspannung von der Soll-Fadenspannung ab, so wird von der Steuerungseinrichtung 14 ein Signal ausgegeben, welches zur Regelung bzw. Korrektur der Bremskraft der Schussfadenbremse 5 bzw. 16 verwendet wird, bis sich die Soll-Fadenspannung einstellt.According to the invention this is achieved in that the thread tension of the Weft 4 in front of the thread store 11 with the help of a Thread tension sensor 10 is measured. The measurement signals are electronically forwarded to a control device 14, which is preferably is part of the weaving machine control. In the control device the measured actual thread tension is compared with a target thread tension. If the actual thread tension deviates from the nominal thread tension, the Control device 14 outputs a signal which is used for regulation or Correction of the braking force of the weft brake 5 or 16 is used until the target thread tension is set.

Entsprechende Sollwertvorgaben und andere, unter anderem vom verwendeten Garn abhängige Einstellparameter, können vom Weber über eine Eingabeeinheit 15 eingegeben werden, die Teil einer übergeordneten Eingabeeinheit der Webmaschine sein kann.Corresponding setpoint specifications and others, including the one used Yarn-dependent setting parameters can be made by the weaver via an input unit 15 are entered, which are part of a higher-level input unit of the Loom can be.

Die beim Abzug des Schussfadens 4 von der Vorratsspule 2 entstehende Fadenspannung ist bei einer vorgegebenen Abzugsgeschwindigkeit bei voller Vorratsspule 2 niedriger als bei einer Vorratsspule 2 mit geringem Garnvorrat. Ist die Vorratsspule 2 leer und muss auf eine volle Vorratsspule 1 übergegangen werden, ergibt sich hierbei eine abrupte Änderung der Fadenspannung. Ein derartiger Spulenwechsel wird durch einen Spulenüberlaufsensor 3 erkannt und als Signal an die Steuerungseinrichtung 14 übertragen. Die Steuerungseinrichtung 14 schaltet die Fadenbremse 5 bzw. 16 auf eine einstellbare Einlaufbremskraft (Grobeinstellung). Anschließend erfolgt die oben beschriebene Feinregelung der Bremskraft.The resulting when the weft thread 4 is pulled from the supply spool 2 Thread tension is full at a given take-off speed Supply spool 2 is lower than a supply spool 2 with a low yarn supply. is the supply spool 2 is empty and must be transferred to a full supply spool 1 there is an abrupt change in thread tension. On such a bobbin change is recognized by a bobbin overflow sensor 3 and transmitted as a signal to the control device 14. The Control device 14 switches the thread brake 5 or 16 to one adjustable infeed braking force (rough setting). Then the above is done described fine control of the braking force.

In Figur 1 ist die Schussfadenbremse als Blattfederbremse 5 ausgebildet und umfasst ein feststehendes Bremsenteil 6 und ein als Blattfeder ausgebildetes bewegliches Bremsenteil 7. Der Schussfaden 4 wird zwischen dem feststehenden Bremsenteil 6 und dem beweglichen Bremsenteil 7 hindurchgeführt. Mittels eines Motors 9 und eines Exzenterstellers 8 kann die Anpresskraft des beweglichen Bremsenteils 7 auf das feststehende Bremsenteil 6 eingestellt werden, wodurch sich gleichzeitig die Bremskraft auf den Schussfaden 4 verändert.In Figure 1, the weft brake is designed as a leaf spring brake 5 and comprises a fixed brake part 6 and one designed as a leaf spring movable brake part 7. The weft 4 is between the stationary brake part 6 and the movable brake part 7 passed. By means of a motor 9 and an eccentric 8, the Contact force of the movable brake part 7 on the fixed brake part 6 can be set, whereby the braking force on the Weft 4 changed.

Figur 2 zeigt eine als Umschlingungsbremse 16 ausgebildete Schussfadenbremse. Diese umfasst ein scheibenförmiges, feststehendes Bremsenteil 17 und ein scheibenförmiges, bewegliches Bremsenteil 18, die beide über eine Achse miteinander verbunden sind. Der Schussfaden 4 wird jeweils durch eine Öse am Rand der scheibenartigen Teile 17, 18 hindurchgeführt. Mittels eines Motors 19 kann das bewegliche Scheibenteil 18 gegenüber dem feststehenden Teil 17 verdreht werden, wodurch der Schussfaden 4 mehr oder weniger um die verbindende Achse geschlungen wird, so dass sich die Bremskraft auf den Schussfaden 4 verändert. FIG. 2 shows a belt brake 16 Weft brake. This comprises a disc-shaped, fixed one Brake part 17 and a disc-shaped, movable brake part 18, both are connected to each other via an axis. The weft 4 is each passed through an eyelet on the edge of the disk-like parts 17, 18. By means of a motor 19, the movable disc part 18 can be compared to the fixed part 17 are rotated, whereby the weft 4 more or is less wrapped around the connecting axis, so that the Braking force on the weft 4 changed.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
GarnvorratsspuleGarnvorratsspule
22
GarnvorratsspuleGarnvorratsspule
33
SpulenüberlaufsensorCoils overflow sensor
44
Schussfadenweft
55
Schussfadenbremse (Blattfederbremse)Weft brake (leaf spring brake)
66
Bremsenteil (fest)Brake part (fixed)
77
Bremsenteil (beweglich)Brake part (movable)
88th
Exzentereccentric
99
Motorengine
1010
FadenspannungssensorYarn tension sensor
1111
Fadenspeicheryarn storage
1212
TommelTommel
1313
SchussfadeneintragsorganWeft insertion member
1414
Steuerungseinrichtungcontrol device
1515
Eingabeeinheitinput unit
1616
SchussfadenbremseWeft brake
1717
Bremsenteil (fest)Brake part (fixed)
1818
Bremsenteil (beweglich)Brake part (movable)
1919
Motorengine

Claims (4)

Verfahren zur Beeinflussung der Fadenbremskraft einer zwischen einem Garnvorratssystem und einem Fadenspeicher einer Webmaschine angeordneten Schussfadenbremse, wobei das Garnvorratssystem aus einer ersten Garnvorratsspule, aus wenigstens einer zweiten Garnvorratsspule und aus einem den Überlauf des Garnes von der ersten zur zweiten Vorratsspule detektierenden Sensor besteht, wonach der Zeitpunkt des Überlaufs des Garnes einer Steuerungseinrichtung signalübertragend zugeführt wird, daraufhin ein Stellmittel der Schussfadenbremse signalübertragend von der Steuerung zum Grobeinstellen der Bremskraft angesteuert wird und nachfolgend ständig in Abhängigkeit des von einem Fadenspannungssensor gemessenen Fadenspannungs-lstwertes die Steuerung ein Soll-lstwertvergleich ausführt, in dessen Ergebnis das Stellmittel der Schussfadenbremse eine ständige Feineinstellung (Regelung) erfährt.Method for influencing the thread braking force between one Yarn supply system and a thread store of a loom arranged Weft brake, the yarn supply system from a first Yarn supply spool, from at least a second yarn supply spool and out one the overflow of the yarn from the first to the second supply spool Detecting sensor exists, after which the time of the overflow of the yarn is supplied to a control device in a signal-transmitting manner Positioning means of the weft brake transmitting signals from the control to Coarse settings of the braking force is controlled and then constantly in Dependence of that measured by a thread tension sensor Thread tension actual values the control executes a target actual value comparison, in the result of which is the permanent means of the weft brake Undergoes fine adjustment (regulation). Einrichtung zur Verfahrensdurchführung nach Anspruch 1, wobei der Schussfaden mittels eines Fadenspeichers aus einem Garnvorratssystem abgezogen wird, und zwischen dem Garnvorratssystem und dem Fadenspeicher eine Schussfadenbremse mit einstellbarer Bremskraft angeordnet ist, und wobei das Garnvorratssystem aus wenigstens einer ersten Garnvorratsspule, einer zweiten Garnvorratsspule und aus einem den Überlauf des Garnes von der ersten zur zweiten Garnvorratsspule detektierenden Sensor besteht, und ferner bestehend aus einer elektronischen Steuerungseinrichtung, dadurch gekennzeichnet, dass nach der Schussfadenbremse (5, 16) ein Fadenspannungssensor (10) angeordnet ist, der die Fadenspannung des Schussfadens (4) als Istwert misst und den Messwert an die Steuerungseinrichtung (14) überträgt, welche die Bremskraft in Abhängigkeit von der gemessenen Fadenspannung regelt.Device for carrying out the method according to claim 1, wherein the weft thread is drawn off from a yarn supply system by means of a thread store, and a weft brake with an adjustable braking force is arranged between the yarn supply system and the thread store, and wherein the yarn supply system consists of at least a first yarn supply spool, a second yarn supply spool and one the overflow of the yarn from the first to the second yarn supply spool detecting sensor, and further consisting of an electronic control device, characterized in that a thread tension sensor (10) is arranged after the weft brake (5, 16), which detects the thread tension of the weft (4) measures as the actual value and transmits the measured value to the control device (14), which regulates the braking force as a function of the measured thread tension. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Schussfadenbremse als Blattfederbremse (5) ausgebildet ist.Device according to claim 2, characterized in that the weft brake is designed as a leaf spring brake (5). Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Schussfadenbremse als Umschlingungsbremse (16) ausgebildet ist.Device according to claim 2, characterized in that the weft brake is designed as a wrap brake (16).
EP02020032A 2001-10-19 2002-09-06 Process and device to influence the braking force of a yarn brake which is arranged between a yarn supply system and a yarn storage in a weaving machine Withdrawn EP1304407A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10151780A DE10151780C1 (en) 2001-10-19 2001-10-19 Method and device for influencing the thread braking force of a weft thread brake arranged between a yarn supply system and a thread store of a weaving machine
DE10151780 2001-10-19

Publications (2)

Publication Number Publication Date
EP1304407A2 true EP1304407A2 (en) 2003-04-23
EP1304407A3 EP1304407A3 (en) 2003-11-05

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EP02020032A Withdrawn EP1304407A3 (en) 2001-10-19 2002-09-06 Process and device to influence the braking force of a yarn brake which is arranged between a yarn supply system and a yarn storage in a weaving machine

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US (1) US6810918B2 (en)
EP (1) EP1304407A3 (en)
JP (1) JP2003183949A (en)
DE (1) DE10151780C1 (en)

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US6810918B2 (en) 2004-11-02

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