EP0532922B1 - Yarn feeding device - Google Patents

Yarn feeding device Download PDF

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Publication number
EP0532922B1
EP0532922B1 EP92114043A EP92114043A EP0532922B1 EP 0532922 B1 EP0532922 B1 EP 0532922B1 EP 92114043 A EP92114043 A EP 92114043A EP 92114043 A EP92114043 A EP 92114043A EP 0532922 B1 EP0532922 B1 EP 0532922B1
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EP
European Patent Office
Prior art keywords
thread
friction
swivel
swivel arm
parallel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92114043A
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German (de)
French (fr)
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EP0532922A1 (en
Inventor
Franz Schmid
Fritz Walker
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H Stoll GmbH and Co KG
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H Stoll GmbH and Co KG
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Publication of EP0532922A1 publication Critical patent/EP0532922A1/en
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Publication of EP0532922B1 publication Critical patent/EP0532922B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • D04B15/52—Thread-feeding devices for straight-bar knitting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/12—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements in spaced relation to provide a series of independent forwarding surfaces around which material is passed or wound
    • 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 for the simultaneous delivery of several threads with two spacing parallel friction rollers, the peripheral speed is higher than the thread take-off speed.
  • the invention is therefore based on the object of designing a thread delivery device with two friction rollers of parallel spacing parallel to one another of the type mentioned at the outset in such a way that they also provide guidance and individual control allows multiple threads over a very wide wrap angle range.
  • all mutually interacting but not necessarily jointly controllable swivel arm pairs of which one swivel arm is assigned to the first and the other swivel arm to the second friction roller, can have at their free ends two thread deflecting rollers arranged with parallel axes.
  • any number of swivel arms for guiding separate threads can be arranged over a correspondingly wide, identical friction roller.
  • the thread delivery device can also have two friction rollers running parallel to one another at a distance, with each thread guided over both friction rollers being assigned at least one thread guide element arranged on a swivel arm on each friction roller and the thread guide elements being all pivotable into the distance between the two friction rollers.
  • each of several threads can be individually influenced in its feed rate, and wrap angles can be set on the friction rollers, which can be from 0 ° (lifting the thread from the friction roller) to over 270 °.
  • the swivel arms of the thread delivery device according to the invention can be arranged on a common axis running outside an associated friction roller, so that they can also be coupled together for a common adjustment if necessary.
  • the associated friction roller can advantageously be designed as a continuous long roller with a stepped surface, so that after a thread break forming thread winding of each of the driven threads can be pushed over a free end of the friction roller after pivoting the adjacent threads.
  • a thread delivery device designed according to the invention is particularly suitable for textile machines, for example flat knitting machines, with an automatic regulation of the thread feed, the tension of the individual threads being measured and an adjustment motor assigned to each individual swivel arm and acting on it being driven depending on the measured thread tension.
  • end stops can be expediently provided, which limit its swivel range overall, with an infinitely adjustable intermediate stop being arranged within the maximum wrap range defined by the end stops, with which a swivel angle determined as favorable can be determined such that a swivel arm after one temporary pivoting can be pivoted back into this convenient position.
  • the thread guiding device shown has a flat and essentially circular cylindrical housing 10, in which two friction rollers 11 and 12 projecting over the one end face of the housing 10 and running parallel to one another at a distance are overhung.
  • An electric motor 13 is flanged to the other end face of the housing 10 and drives the two friction rollers 11 and 12 at a peripheral speed that is greater than a desired thread take-off speed via a gear (not shown) housed in the housing 10.
  • a rod 14 is fastened in the housing 10, on each of which several of two types of swivel arms 15 and 16 are alternately supported in succession.
  • the swivel arms 15 are the friction roller 12 and the swivel arms 16 are assigned to the friction roller 11.
  • the pivot arms 15 and 16 are substantially longer than the diameter of the friction rollers 11 and 12 and curved so that they can be seen from their support rod 14 in the space between the two friction rollers 11 and 12 through the common imaginary connection plane of the axes 11.1 and 12.1 of the two friction rollers 11 can be pivoted through without touching the friction rollers 11, 12.
  • Each swivel arm 15, 16 carries at its free end two deflection rollers 15/1, 15/2 or 16/1, 16/2, which are mounted parallel to one another and freely rotatable.
  • the plurality of threads to be driven are first fed to the friction roller 11 via a thread guide rail 18 which is shown in FIG. 2 and is provided with thread guide eyelets 17. For reasons of clarity, only a single thread 20 is shown in the drawing. 1, the thread passes through a thread guide eyelet 17 of the thread guide rail onto the friction roller 11. Its wrap angle around the friction roller 11 is determined by the deflection roller 16/2 of a swivel arm 16, through which the thread is derived from the friction roller 11 and passed to the friction roller 12 becomes.
  • the wrap angle alpha 2 of the thread 20 around the friction roller 12 is determined by the deflecting roller 15/2 of a swivel arm 15 adjacent to the swivel arm 16, through which the thread is lifted from the friction roller 12 and passed again to the friction roller 11.
  • the thread 20 is finally discharged downward from the friction roller 11 to a thread guide member, not shown.
  • both pivot arms 15 and 16 are also shown with dash-dotted lines in a second pivot position, in which they each give the thread 20 'also drawn for this position a smaller wrap angle betta 1 and betta 2 around the friction rollers 11 and 12.
  • the thread 20 ' is guided over the deflection rollers 15/1 and 16/1.
  • the swivel arms 15 and 16 can be adjusted by hand using a grip pin 19 indicated in FIG. 1.
  • This grip pin can be assigned to an intermediate stop, not shown, which is infinitely adjustable between end stops and with which a swivel arm setting can be fixed.
  • the end stops can be determined, for example, by the ends of guide slots 21, one of which is also indicated in FIG. 2.
  • each of the swivel arms 15 and 16 is assigned an adjusting motor 22 which engages the swivel arms 15 or 16 on a second arm, here on an arm 16/3 of a swivel arm 16.
  • Each thread is passed in the direction of travel behind the thread delivery device via a thread tension meter 23, which supplies a control signal to a control circuit 24, from which the individual adjustment motors 22 receive their adjustment signals, for example adjustment pulses.
  • the drive motors can have any suitable structure. All swivel arms 15 and / or all swivel arms 16 can also have a thru-axle, not shown, for which the swivel arms have a through-opening 25, are positively coupled to one another so that all swivel arms 15 or 16 can be adjusted together, for example by means of a single drive motor 22.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Knitting Machines (AREA)

Description

Die Erfindung betrifft eine Vorrichtung für die gleichzeitige Lieferung auch mehrerer Fäden mit zwei mit Abstand parallel zueinander verlaufenden Friktionswalzen, deren Umfangsgeschwindigkeit höher als die Fadenabzugsgeschwindigkeit ist.The invention relates to a device for the simultaneous delivery of several threads with two spacing parallel friction rollers, the peripheral speed is higher than the thread take-off speed.

Es ist bekannt, bei einer Vorrichtung mit nur einer angetriebenen Friktionswalze den Faden über zwei gleichachsige und jeweils gleichzeitig und gegensinnig gegenüber der Friktionswalze verschwenkbare, mit Umlenkrollen an ihren Enden versehene Schwenkarme zu führen (GB-A-951 728), um dadurch den Faden von der Friktionswalze ganz abzuheben oder mit einem veränderbaren Umschlingungswinkel an die Friktionswalze anzulegen. Bei dieser bekannten Vorrichtung, wie auch bei anderen vorbekannten Friktions-Fadenliefervorrichtungen (EP-A-387 546), wird der Faden mehrfach über die Friktionswalze und die an den Schwenkarmen befindlichen Umlenkrollen geführt, die zu diesem Zweck mehrere Fadenführungsnuten aufweisen. Dies erschwert das von Hand erforderliche Auflegen des Fadens auf die Schwenkarme und verhindert praktisch die Bildung einer Fadenliefervorrichtung für die gleichzeitige Lieferung mehrerer Fäden über die gleiche Friktionswalze oder - wie im vorliegenden Falle - über zwei mit Abstand parallel zueinander verlaufende Friktionswalzen. Bei der vorbekannten Fadenliefervorrichtung nach der GB-A-951 728 können außerdem die beiden Schwenkarme die Friktionswalze nicht vollständig hintergreifen, so daß der Umschlingungswinkelbereich kaum größer als 180° sein kann.It is known in a device with only one driven friction roller to guide the thread over two coaxial axes which can be pivoted at the same time and in opposite directions with respect to the friction roller and are provided with deflection rollers at their ends (GB-A-951 728), to thereby remove the thread from lift off the friction roller completely or place it on the friction roller with a variable wrap angle. In this known device, as in other known friction thread delivery devices (EP-A-387 546), the thread is passed several times over the friction roller and the deflection rollers located on the swivel arms, which have several thread guide grooves for this purpose. This complicates the manual laying of the thread on the swivel arms and practically prevents the formation of a thread delivery device for the simultaneous delivery of several threads over the same friction roller or - as in the present case - over two spaced-apart friction rollers. In the prior art yarn delivery device according to GB-A-951 728, moreover, the two swivel arms cannot completely engage behind the friction roller, so that the wrap angle range can hardly be greater than 180 °.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Fadenliefervorrichtung mit zwei mit Abstand parallel zueinander verlaufenden Friktionswalzen der eingangs genannten Art so auszubilden, daß sie auch eine Führung und individuelle Steuerung mehrerer Fäden über einen sehr breiten Umschlingungswinkelbereich ermöglicht.The invention is therefore based on the object of designing a thread delivery device with two friction rollers of parallel spacing parallel to one another of the type mentioned at the outset in such a way that they also provide guidance and individual control allows multiple threads over a very wide wrap angle range.

Die gestellte Aufgabe wird erfindungsgemäß durch die Merkmalskombination des Hauptanspruches gelöst. Vorteilhafterweise können alle miteinander zusammenwirkenden, aber nicht zwangsläufig gemeinsam steuerbare Schwenkarmpaare, von denen der eine Schwenkarm der ersten und der andere Schwenkarm der zweiten Friktionswalze zugeordnet ist, an ihren freien Enden zwei mit Abstand parallelachsig angeordnete Fadenumlenkrollen aufweisen.The object is achieved according to the invention by the combination of features of the main claim. Advantageously, all mutually interacting but not necessarily jointly controllable swivel arm pairs, of which one swivel arm is assigned to the first and the other swivel arm to the second friction roller, can have at their free ends two thread deflecting rollers arranged with parallel axes.

Bei einer erfindungsgemäß ausgebildeten Fadenliefervorrichtung können beliebig viele Schwenkarme zur Führung gesonderter Fäden über eine entsprechend breite gleiche Friktionswalze angeordnet werden. Die Fadenliefervorrichtung kann auch zwei mit Abstand parallel zueinander verlaufende Friktionswalzen aufweisen, wobei jedem über beide Friktionswalzen geführten Faden an jeder Friktionswalze mindestens ein an einem Schwenkarm angeordnetes Fadenleitorgan zugeordnet ist und die Fadenleitorgane alle bis in den Abstandsbereich zwischen den beiden Friktionswalzen hinein verschwenkbar sind. Mit der Fadenliefervorrichtung läßt sich jeder von mehreren Fäden individuell in seiner Vorschubgeschwindigkeit beeinflussen, und es lassen sich an den Friktionswalzen Umschlingungswinkel einstellen, die von 0° (Abhebung des Fadens von der Friktionswalze) bis zu über 270° betragen können.In a thread delivery device designed according to the invention, any number of swivel arms for guiding separate threads can be arranged over a correspondingly wide, identical friction roller. The thread delivery device can also have two friction rollers running parallel to one another at a distance, with each thread guided over both friction rollers being assigned at least one thread guide element arranged on a swivel arm on each friction roller and the thread guide elements being all pivotable into the distance between the two friction rollers. With the thread delivery device, each of several threads can be individually influenced in its feed rate, and wrap angles can be set on the friction rollers, which can be from 0 ° (lifting the thread from the friction roller) to over 270 °.

Die Schwenkarme der Fadenliefervorrichtung gemäß der Erfindung können auf einer gemeinsamen, außerhalb einer zugeordneten Friktionswalze verlaufenden Achse angeordnet sein, so daß sie bei Bedarf auch für eine gemeinsame Verstellung miteinander koppelbar sind. Die zugeordnete Friktionswalze kann vorteilhafterweise als durchgehende Langwalze mit ungestufter Oberfläche ausgebildet sein, so daß sich nach einem Fadenriß bildende Fadenwickel eines jeden der angetriebenen Fäden nach einem Abschwenken der benachbarten Fäden über ein freies Ende der Friktionswalze abschieben lassen.The swivel arms of the thread delivery device according to the invention can be arranged on a common axis running outside an associated friction roller, so that they can also be coupled together for a common adjustment if necessary. The associated friction roller can advantageously be designed as a continuous long roller with a stepped surface, so that after a thread break forming thread winding of each of the driven threads can be pushed over a free end of the friction roller after pivoting the adjacent threads.

Eine erfindungsgemäß ausgebildete Fadenliefervorrichtung eignet sich insbesondere für Textilmaschinen, beispielsweise Flachstrickmaschinen, mit einer automatischen Regelung des Fadenvorschubes, wobei die Spannung der einzelnen Fäden gemessen und ein jedem einzelnen Schwenkarm zugeordneter und an ihm angreifender Verstellmotor in Abhängigkeit von der gemessenen Fadenspannung angetrieben wird.A thread delivery device designed according to the invention is particularly suitable for textile machines, for example flat knitting machines, with an automatic regulation of the thread feed, the tension of the individual threads being measured and an adjustment motor assigned to each individual swivel arm and acting on it being driven depending on the measured thread tension.

Für jeden Schwenkarm der erfindungsgemäß ausgebildeten Fadenliefervorrichtung können zweckmäßig Endanschläge vorgesehen sein, die seinen Verschwenkbereich insgesamt begrenzen, wobei innerhalb des durch die Endanschläge festgelegten Maximalumschlingungsbereiches ein stufenlos verstellbarer Zwischenanschlag angeordnet ist, mit welchem ein als günstig ermittelter Verschwenkwinkel so festlegbar ist, daß ein Schwenkarm nach einem vorübergehenden Abschwenken wieder in diese günstige Position eingeschwenkt werden kann.For each swivel arm of the thread delivery device designed according to the invention, end stops can be expediently provided, which limit its swivel range overall, with an infinitely adjustable intermediate stop being arranged within the maximum wrap range defined by the end stops, with which a swivel angle determined as favorable can be determined such that a swivel arm after one temporary pivoting can be pivoted back into this convenient position.

Nachfolgend wird ein Ausführungsbeispiel einer erfindungsgemäß ausgebildeten Fadenliefervorrichtung anhand der beiliegenden Zeichnung näher erläutert.An exemplary embodiment of a thread delivery device designed according to the invention is explained in more detail below with reference to the accompanying drawing.

Im einzelnen zeigen:

Fig. 1
eine stirnseitige Ansicht einer zwei Friktionswalzen aufweisenden Fadenliefervorrichtung in Richtung des Pfeiles I in Fig. 2;
Fig. 1a
eine der Fig. 1 entsprechende Ansicht einer Fadenliefervorrichtung mit motorischer Verstellung der Schwenkarme;
Fig. 2
eine Draufsicht auf eine Vorrichtung nach Fig. 1.
In detail show:
Fig. 1
an end view of a two friction rollers thread delivery device in the direction of arrow I in Fig. 2;
Fig. 1a
a view corresponding to Figure 1 of a thread delivery device with motorized adjustment of the swivel arms.
Fig. 2
2 shows a plan view of a device according to FIG. 1.

Die dargestellte Fadenleitvorrichtung weist ein flaches und im wesentlichen kreiszylindrisches Gehäuses 10 auf, in welchem zwei über die eine Stirnseite des Gehäuses 10 vorstehende und mit Abstand parallel zueinander verlaufende Friktionswalzen 11 und 12 fliegend gelagert sind. An der anderen Stirnseite des Gehäuses 10 ist ein Elektromotor 13 angeflanscht, der über ein im Gehäuse 10 untergebrachtes, nicht dargestelltes Getriebe, die beiden Friktionswalzen 11 und 12 mit einer Umfangsgeschwindigkeit antreibt, die größer ist als eine gewünschte Fadenabzugsgeschwindigkeit. Mit Abstand parallel zu der Friktionswalze 12 ist im Gehäuse 10 ein Stab 14 befestigt, auf welchem jeweils mehrere von zwei Arten von Schwenkarmen 15 und 16 abwechselnd aufeinanderfolgend gelagert sind. Die Schwenkarme 15 sind der Friktionswalze 12 und die Schwenkarme 16 sind der Friktionswalze 11 zugeordnet. Wie aus Fig. 1 ersichtlich ist, sind die Schwenkarme 15 und 16 wesentlich länger als der Durchmesser der Friktionswalzen 11 und 12 und so gekrümmt, daß sie von ihrem Lagerstab 14 aus gesehen in den zwischen den beiden Friktionswalzen 11 und 12 bestehenden Zwischenraum durch die gemeinsame gedachte Verbindungsebene der Achsen 11.1 und 12.1 der beiden Friktionswalzen 11 hindurch verschwenkbar sind, ohne die Friktionswalzen 11, 12 zu berühren. Jeder Schwenkarm 15, 16 trägt an seinem freien Ende zwei mit Abstand parallel zueinander und frei drehbar gelagerte Umlenkrollen 15/1, 15/2 oder 16/1, 16/2.The thread guiding device shown has a flat and essentially circular cylindrical housing 10, in which two friction rollers 11 and 12 projecting over the one end face of the housing 10 and running parallel to one another at a distance are overhung. An electric motor 13 is flanged to the other end face of the housing 10 and drives the two friction rollers 11 and 12 at a peripheral speed that is greater than a desired thread take-off speed via a gear (not shown) housed in the housing 10. At a distance parallel to the friction roller 12, a rod 14 is fastened in the housing 10, on each of which several of two types of swivel arms 15 and 16 are alternately supported in succession. The swivel arms 15 are the friction roller 12 and the swivel arms 16 are assigned to the friction roller 11. As can be seen from Fig. 1, the pivot arms 15 and 16 are substantially longer than the diameter of the friction rollers 11 and 12 and curved so that they can be seen from their support rod 14 in the space between the two friction rollers 11 and 12 through the common imaginary connection plane of the axes 11.1 and 12.1 of the two friction rollers 11 can be pivoted through without touching the friction rollers 11, 12. Each swivel arm 15, 16 carries at its free end two deflection rollers 15/1, 15/2 or 16/1, 16/2, which are mounted parallel to one another and freely rotatable.

Die mehreren anzutreibenden Fäden werden über eine aus Fig. 2 ersichtliche, mit Fadenleitösen 17 versehene Fadenleitschiene 18 zunächst der Friktionswalze 11 zugeführt. In der Zeichnung ist aus Gründen der Übersichtlichkeit nur ein einziger Faden 20 eingezeichnet. Gemäß Fig. 1 gelangt der Faden durch eine Fadenleitöse 17 der Fadenleitschiene auf die Friktionswalze 11. Sein Umschlingungswinkel um die Friktionswalze 11 wird durch die Umlenkrolle 16/2 eines Schwenkarmes 16 bestimmt, durch welche der Faden von der Friktionswalze 11 abgeleitet und zur Friktionswalze 12 geleitet wird. Der Umschlingungswinkel alpha 2 des Fadens 20 um die Friktionswalze 12 wird durch die Umlenkrolle 15/2 eines dem Schwenkarm 16 benachbarten Schwenkarmes 15 bestimmt, durch welche der Faden von der Friktionswalze 12 abgehoben und erneut zur Friktionswalze 11 geleitet wird. Von der Friktionswalze 11 wird der Faden 20 schließlich nach unten zu einem nicht dargestellten Fadenleitorgan abgeführt.The plurality of threads to be driven are first fed to the friction roller 11 via a thread guide rail 18 which is shown in FIG. 2 and is provided with thread guide eyelets 17. For reasons of clarity, only a single thread 20 is shown in the drawing. 1, the thread passes through a thread guide eyelet 17 of the thread guide rail onto the friction roller 11. Its wrap angle around the friction roller 11 is determined by the deflection roller 16/2 of a swivel arm 16, through which the thread is derived from the friction roller 11 and passed to the friction roller 12 becomes. The wrap angle alpha 2 of the thread 20 around the friction roller 12 is determined by the deflecting roller 15/2 of a swivel arm 15 adjacent to the swivel arm 16, through which the thread is lifted from the friction roller 12 and passed again to the friction roller 11. The thread 20 is finally discharged downward from the friction roller 11 to a thread guide member, not shown.

In Fig. 1 sind beide Schwenkarme 15 und 16 mit strichpunktierten Linien zusätzlich in einer zweiten Schwenkstellung dargestellt, in welcher sie dem für diese Stellung ebenfalls eingezeichneten Faden 20' jeweils einen kleineren Umschlingungswinkel betta 1 und betta 2 um die Friktionswalzen 11 und 12 verleihen. In dieser zweiten Schwenkstellung ist der Faden 20' über die Umlenkrollen 15/1 und 16/1 geführt. Das Verstellen der Schwenkarme 15 und 16 kann von Hand mittels eines in Fig. 1 angedeuteten Griffstiftes 19 erfolgen. Dieser Griffstift kann einem zwischen Endanschlägen stufenlos verstellbaren, nicht dargestellten Zwischenanschlag zugeordnet sein, mit welchem sich eine Schwenkarm-Einstellung fixieren läßt. Die Endanschläge können beispielsweise durch die Enden von Führungsschlitzen 21 bestimmt sein, von denen einer ebenfalls in Fig. 2 angedeutet ist.In Fig. 1 both pivot arms 15 and 16 are also shown with dash-dotted lines in a second pivot position, in which they each give the thread 20 'also drawn for this position a smaller wrap angle betta 1 and betta 2 around the friction rollers 11 and 12. In this second swivel position, the thread 20 'is guided over the deflection rollers 15/1 and 16/1. The swivel arms 15 and 16 can be adjusted by hand using a grip pin 19 indicated in FIG. 1. This grip pin can be assigned to an intermediate stop, not shown, which is infinitely adjustable between end stops and with which a swivel arm setting can be fixed. The end stops can be determined, for example, by the ends of guide slots 21, one of which is also indicated in FIG. 2.

Fig. 1a zeigt eine Ausführungsform der Fadenliefervorrichtung, bei welcher jedem der Schwenkarme 15 und 16 ein Verstellmotor 22 zugeordnet ist, der an einem zweiten Arm, hier an einem Arm 16/3 eines Schwenkarmes 16, der Schwenkarme 15 oder 16 angreift. Jeder Faden ist in Durchlaufrichtung hinter der Fadenliefervorrichtung über einen Fadenspannungsmesser 23 geleitet, der ein Regelsignal auf eine Regelschaltung 24 liefert, von welcher die einzelnen Verstellmotore 22 ihre Verstellsignale, beispielsweise Verstellimpulse, erhalten.1a shows an embodiment of the thread delivery device in which each of the swivel arms 15 and 16 is assigned an adjusting motor 22 which engages the swivel arms 15 or 16 on a second arm, here on an arm 16/3 of a swivel arm 16. Each thread is passed in the direction of travel behind the thread delivery device via a thread tension meter 23, which supplies a control signal to a control circuit 24, from which the individual adjustment motors 22 receive their adjustment signals, for example adjustment pulses.

Die Antriebsmotore können einen beliebigen passenden Aufbau haben. Alle Schwenkarme 15 und/oder alle Schwenkarme 16 können auch über eine nicht dargestellte Steckachse, für welche die Schwenkarme eine Durchgangsöffnung 25 aufweisen, miteinander zwangsgekoppelt werden, so daß alle Schwenkarme 15 oder 16 gemeinsam, beispielsweise mittels eines einzigen Antriebsmotors 22, verstellbar sind.The drive motors can have any suitable structure. All swivel arms 15 and / or all swivel arms 16 can also have a thru-axle, not shown, for which the swivel arms have a through-opening 25, are positively coupled to one another so that all swivel arms 15 or 16 can be adjusted together, for example by means of a single drive motor 22.

Claims (6)

  1. Device for the simultaneous feeding of even a plurality of threads, comprising two friction rolls (11, 12) extending in parallel and at a distance from one another, the circumferential speed of which is higher than the thread take-off speed and via which each thread (20) is guided and diverted via at least one thread guide element (16/1, 16/2; 15/1, 15/2) associated with the first friction roll (11) and at least one thread guide element (16/1, 16/2; 15/1, 15/2) associated with the second friction roll (12), said thread guide elements being in the form of deflecting rollers, the position of which determines the angle of contact of the thread around the friction rolls and which are arranged on a swivel arm (16; 15) which is supported on an axis (14) arranged outside the axes (11.1, 12.1) of the two friction rolls (11, 12) and which, if its length exceeds the diameter of the friction rolls (11, 12), is curved in such a manner that it can be swivelled together with the deflecting roller (16/1, 16/2; 15/1, 15/2) into the intermediate space between the friction rolls (11, 12) through the entire imaginary connecting plane of the friction roll axes (11.1, 12.1) without contacting the friction rolls (11, 12).
  2. Device according to claim 1, characterised in that the two swivel arms (15, 16) associated with each thread (20) are each provided at their free ends with two thread deflecting rollers (15/1, 15/2; 16/1, 16/2) arranged in an axially parallel manner at a distance from one another.
  3. Device according to claim 1 or claim 2, characterised in that all of the swivel arms (15; 16) are arranged in parallel and at a distance from one another on a common axis (14) extending parallel to the friction roll axes (11.1, 12.1).
  4. Device according to one of claims 1 to 3, characterised in that the plurality of coaxial swivel arms (15, 16) are coupled together for the purposes of joint adjustment.
  5. Device according to one of claims 1 to 4, characterised in that each swivel arm is coupled to a controllable adjusting motor (22).
  6. Device according to one of claims 1 to 5, characterised in that end stops and an intermediate stop (19) progressively adjustable within the swivelling range delimited by the end stops are provided for each swivel arm (15, 16) so that the swivel arm can be fixed in position in a reproducible manner.
EP92114043A 1991-09-20 1992-08-18 Yarn feeding device Expired - Lifetime EP0532922B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4131322A DE4131322A1 (en) 1991-09-20 1991-09-20 THREAD DELIVERY DEVICE
DE4131322 1991-09-20

Publications (2)

Publication Number Publication Date
EP0532922A1 EP0532922A1 (en) 1993-03-24
EP0532922B1 true EP0532922B1 (en) 1996-04-17

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EP92114043A Expired - Lifetime EP0532922B1 (en) 1991-09-20 1992-08-18 Yarn feeding device

Country Status (5)

Country Link
US (1) US5320294A (en)
EP (1) EP0532922B1 (en)
JP (1) JP2509133B2 (en)
DE (2) DE4131322A1 (en)
ES (1) ES2087370T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016015018A1 (en) * 2016-12-16 2018-06-21 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Friktionsfournisseur
CN107964728B (en) * 2018-01-12 2024-03-19 泰山玻璃纤维有限公司 Textile device for warp knitting fabric

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE484053A (en) *
NL71675C (en) * 1947-04-14
US2641913A (en) * 1947-04-15 1953-06-16 Poron Ets Yarn feeding method and apparatus for knitting machines
GB951728A (en) * 1962-03-10 1964-03-11 Spinner Oy Thread-feeding device
FR2071546A5 (en) * 1969-12-31 1971-09-17 Verdol Mecaniques Yarn tensioner - for yarn let-off mechanism feeding ring spinner
US3831873A (en) * 1970-05-26 1974-08-27 Leesona Corp Take-up system
CS158783B1 (en) * 1972-02-14 1974-12-27
DE2245869A1 (en) * 1972-09-19 1974-03-28 Karl Bous PROCESS AND DEVICE FOR DELIVERING AND TENSIONING YARNS WITH ADJUSTABLE, CONSTANT THREAD TENSION
JPS5424218U (en) * 1977-07-20 1979-02-17
JPS60188272A (en) * 1984-03-06 1985-09-25 Fukuhara Seiki Seisakusho:Kk Positively thread feeding apparatus in knitting machine
DE3416195A1 (en) * 1984-05-02 1985-11-14 Gustav 7290 Freudenstadt Memminger THREAD DELIVERY DEVICE FOR THREAD PROCESSING TEXTILE MACHINES, BSPW. CIRCULAR KNITTING OR KNITTING MACHINES
JPS60248572A (en) * 1984-05-22 1985-12-09 Toyoda Autom Loom Works Ltd Winding tension correcting device of fine spinning machine
DE3732102C1 (en) * 1987-09-24 1989-05-03 Gustav Memminger Thread delivery device for textile machines with different times of thread consumption, in particular knitting and knitting machines
DE3908012A1 (en) * 1989-03-11 1990-09-13 Sobrevin DELIVERY DEVICE FOR RUNNING THREADS

Also Published As

Publication number Publication date
JPH05214647A (en) 1993-08-24
ES2087370T3 (en) 1996-07-16
JP2509133B2 (en) 1996-06-19
US5320294A (en) 1994-06-14
DE4131322A1 (en) 1993-03-25
DE59206014D1 (en) 1996-05-23
EP0532922A1 (en) 1993-03-24

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