EP0057015B1 - Method and device for the manufacturing of an effect yarn - Google Patents

Method and device for the manufacturing of an effect yarn Download PDF

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Publication number
EP0057015B1
EP0057015B1 EP82100523A EP82100523A EP0057015B1 EP 0057015 B1 EP0057015 B1 EP 0057015B1 EP 82100523 A EP82100523 A EP 82100523A EP 82100523 A EP82100523 A EP 82100523A EP 0057015 B1 EP0057015 B1 EP 0057015B1
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EP
European Patent Office
Prior art keywords
thread
effect
false twist
fibres
chamber
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EP82100523A
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German (de)
French (fr)
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EP0057015A2 (en
EP0057015A3 (en
Inventor
Georgi Mitov Dipl.-Ing. Petrov
Kiril Kostov Dipl.-Ing. Boev
Igor Alexandrov Fidelski
Jordan Vassilev Pirgov
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INSTITUT PO OBLEKLO I TEXTIL
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INSTITUT PO OBLEKLO I TEXTIL
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    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
    • D02G3/343Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns using hollow spindles

Definitions

  • the invention relates to a process for the production of fancy yarns from a basic thread transported with constant tension and delivery speed and a fancy thread material to which a false twist is given, the effects formed by the fancy thread material are fixed to the basic thread by additional thread material and the fancy yarn formed with the delivery speed of the basic thread is subtracted.
  • the invention further relates to a device for carrying out this method with a feed for the basic thread via a tensioning device, with a feed for effect thread material, with a pair of draw-off rollers for the fancy yarn formed and with a rotatable hollow spindle arranged in front of it in the thread running direction and carrying a false twist element on the outlet side.
  • a device for the production of fancy yarn in which a base thread and a fancy thread in the form of a thread or a fiber band are used.
  • the device also has a hollow spindle with a false twist element attached to it and rotating around it.
  • a thin fastening thread is wound on the hollow spindle.
  • the object on which the invention is based is to design the method and the device of the type mentioned at the outset in such a way that, at high production speeds, reliable fixing and strengthening of the effects formed from threads and / or fibers on the fancy yarn produced is made possible in a simple manner.
  • the one ends of the fibers solidifying the fancy yarn can be bound in by the false twist of the base thread and at least one fancy thread. It is also possible that together with the fibers that solidify the fancy yarn, other fibers are inflated that are longer and stronger than the fibers that solidify the fancy yarn and that are twisted around the basic thread in the confined space to form effects. The other fibers are at least twice as long as the fibers that consolidate the fancy yarn and up to ten times stronger than these.
  • the fibers can be separated by warping from roving immediately before inflation, both the shorter fibers used for the consolidation and the longer fibers which produce the effects.
  • the fibers forming the effects can also be provided in addition to an effect thread.
  • the stated object is achieved on the basis of the device of the type mentioned at the outset by a chamber arranged in the thread running direction directly in front of the hollow spindle with an inlet and an outlet, which are aligned in the thread running direction, and a channel for the pneumatic fiber transport, which ends at the end with a side opening into the chamber solved, the other end is assigned to a fiber supply plant.
  • the diameter of the inlet into the chamber and its outlet is expediently at most three to four times that largest cross-sectional dimension of the fancy yarn formed.
  • the axis of the channel expediently forms an angle with the axis of the chamber in the thread running direction that is less than 90 °.
  • the chamber can be double-walled in the thread running direction after the opening of the channel, the inner wall being penetrated by air outlet holes.
  • an air suction device can be arranged downstream of the chamber in the thread running direction, which is connected to the air supply for the pneumatic fiber conveyance in the channel.
  • the fibers drawn off from the supplying plant are separated in the required manner, whereby at the end of the channel they have a speed that is greater than the speed of the supplying plant feeding them. If the fibers hit the wrongly twisted base thread and, if applicable, effect thread, they are gripped by one end of it, while their free end is kept taut. Due to their length, however, the fibers do not rotate around the base thread, possibly with effect thread, but only when the twisting occurs after leaving the false twist element, as a result of which the effects formed are consolidated and fixed.
  • the device shown in FIG. 1 has a fiber delivery unit 1 consisting of several pairs of rollers, with which fibers are drawn from a roving 14 in the form of a fiber band and guided over a channel 7 for a pneumatic fiber transport.
  • a base thread 4 is guided via a tensioning device in the form of a thread brake 5 via a deflection roller either through the groove 3 in a pair of delivery rollers 2 without being conveyed by this pair of delivery rollers, or is guided past the pair of delivery rollers 2 by a guide deflector 3.1.
  • the delivery roller pair 2 conveys a fancy yarn consisting of a sliver 13 or a thread at a speed which is 20 to 300% greater than the speed of the base thread 4.
  • the base thread 4 with the effect thread 13 passes through a rotating hollow spindle 9 and is over guided with the hollow spindle 9 false twist element 12.
  • the effect yarn 15 formed is removed by a pair of draw-off rollers 10 arranged in the running direction after the false twist element 12 at the speed of the base thread 4.
  • the basic thread is held taut by the brake 5 and the pair of draw rollers 10.
  • the effect thread 13 forms effects, for example loops, due to the false twist given between the false twist element 12 and the junction point of base thread 4 and effect thread 13, the junction point either through the nip of the delivery roller pair 2 of the effect thread 13 or at the feed point of the base thread to the effect thread via the guide deflector 3.1 is defined.
  • an air suction device 11 In the thread running direction immediately in front of the hollow spindle 9 there is an air suction device 11 and in front of it a chamber 8 which has an inlet 16 and an outlet 17 arranged flush with it in the thread running direction and into which the channel 7 opens out to the side, the air suction device 11 also being shown in the exemplary embodiment shown the air supply 6 is connected in the channel 7 for the pneumatic transport.
  • the chamber 8 has an inlet 16 and an outlet 17, the inner diameter of which exceeds and reaches three to four times the diameter of the finished yarn, the connection 17.1 of the suction device 11 or the hollow spindle 9 is dimensioned accordingly.
  • the channel 7 opens laterally into the chamber 8, the distance A from the inlet end of the chamber 8 being adjustable, which influences the formation of the effects, for example the formation of thick spots due to the accumulation of strengthening fibers.
  • the axis of the channel 7 forms an angle with the axis of the chamber 8 to the thread entry side, which is less than 90 °.
  • the chamber 8 is double-walled.
  • the inner wall 20 is on. Broken holes Chen, can pass through the air, which is then discharged through a concentric opening in the air suction device 11.
  • the holes for the air discharge are provided in a sleeve 20 ′, which is adjacent to the chamber 8 in the thread running direction and is provided with the outlet 17.
  • the effect thread 13 in the form of a sliver, yarn or thread is fed through the pair of delivery rollers 2 at a greater speed than the base thread 4.
  • the false twist element 12 rotates, a false twist that runs back to the nip of the delivery roller pair 2 occurs, the effect thread forming loops.
  • a fiber sliver 14 is fed through the fiber delivery unit 1, the fibers of which finally reach the channel 7 more or less occasionally, in which a further fiber separation takes place due to the negative pressure prevailing therein and depending on the length.
  • the fibers are fed pneumatically into the chamber 8, where they meet the wrongly rotated basic thread with effect thread and are caught at one end by the rotating threads.
  • the fibers thus detected reach the effective zone of the false twist element 12 without receiving a twist due to the rotation of their free end.
  • the detected fibers receive an actual rotation during the untwisting and reliably compress the basic and effect thread, the effects formed being consolidated and fixed in the form of loops.
  • This strengthening is reinforced by maintaining a certain rotation between the base thread and the effect thread, this rotation having the direction of rotation in the section between the false twist element 12 and the take-off rollers 10.
  • the fancy yarn 15 thus produced is drawn off from the pair of draw-off rollers 10 and wound up in a known manner on a spool, not shown.
  • two roving yarns 13 and 14 in the form of fiber ribbons are guided and separated from the channel 7 by the fiber delivery plant 1, the roving yarn 14 giving the fibers for fixing and strengthening, while the roving yarn 13 gives fibers for an effect formation .
  • the fibers of the roving 14 are six to ten times thinner than the fibers of the roving 13 and considerably shorter than this, for example the length of the fibers resulting from the roving 14 is 60 mm, while the fibers from the roving 13 have a length of 100 mm or more.
  • the fibers from the rovings 13 and 14, after they are separated in the required manner, are pneumatically guided via the channel 7 into the chamber 8 through which the basic thread 4 runs, which is given by the false twist element 12 and false twist, in which case shown embodiment is additionally assigned an effect thread 21, which, however, need not be present.
  • the shorter and thinner fibers from the roving 14 are gripped with one end by the base thread 4 as in the embodiment of FIG. 1, but do not get any twist to the false twist element 12, while the considerably longer and thicker fibers from the roving 13 around the base thread 4 be twisted and form effects.
  • the shorter and thinner fibers obtained from the roving 14 strengthen the false twist between the basic thread 4 and the longer fibers obtained from the roving 13 by a rotation against the pair of take-off rollers 10, thereby enriching the effects still contributed by the bobbin 22 effect thread 21, which is also fixed in the manner described.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Effektgarnen aus einem mit konstanter Spannung und Liefergeschwindigkeit transportierten Grundfaden und einem Effektfadenmaterial, denen ein Falschdrall erteilt wird, wobei die vom Effektfadenmaterial gebildeten Effekte am Grundfaden durch zusätzliches Fadenmaterial fixiert werden und das gebildete Effektgarn mit der Liefergeschwindigkeit des Grundfadens abgezogen wird.The invention relates to a process for the production of fancy yarns from a basic thread transported with constant tension and delivery speed and a fancy thread material to which a false twist is given, the effects formed by the fancy thread material are fixed to the basic thread by additional thread material and the fancy yarn formed with the delivery speed of the basic thread is subtracted.

Die Erfindung betrifft weiterhin eine Vorrichtung zur Durchführung dieses Verfahrens mit einer Zuführung für den Grundfaden über eine Spanneinrichtung, mit einer Zuführung für Effektfadenmaterial, mit einem Abzugswalzenpaar für das gebildete Effektgarn und mit einer in Fadenlaufrichtung davor angeordneten, austrittseitig ein Falschdrallelement tragenden drehbaren Hohlspindel.The invention further relates to a device for carrying out this method with a feed for the basic thread via a tensioning device, with a feed for effect thread material, with a pair of draw-off rollers for the fancy yarn formed and with a rotatable hollow spindle arranged in front of it in the thread running direction and carrying a false twist element on the outlet side.

Es ist bereits bekannt, aus Faserbandmaterial gezogene Fasern zusammen mit einem Grundfaden auf zwei sich drehende Lochtrommein in einem Luftstrom zu führen, der aufgrund einer Luftabsaugung im Trommelinneren erzeugt wird. Die Fasern oder Faserbändchen und der Grundfaden können einen Falschdrall bilden. Eine Festigung dieses Falschdralls erfolgt durch Führen des gebildeten Garns über eine Kardierwalze (Spinnsystem DREF-3).It is already known to guide fibers drawn from sliver material together with a basic thread onto two rotating perforated drums in an air flow which is generated on the inside of the drum due to air suction. The fibers or ribbon and the base thread can form a false twist. This false twist is consolidated by guiding the yarn formed over a carding roller (DREF-3 spinning system).

Durch die Verwendung der rotierenden Lochtrommeln zur Erzeugung des Falschdralls lässt sich eine zufriedenstellende Verdichtung zur Fixierung des Falschdralls und somit der Effekt nicht erreichen. Ausserdem ist die die Lochtrommeln, das Faserlieferwerk und die Kardierwalze umfassende Anlage sehr kompliziert und erfordertfür den Betrieb sehr viel Energie.By using the rotating perforated drums to generate the false twist, a satisfactory compression for fixing the false twist and thus the effect cannot be achieved. In addition, the system comprising the perforated drums, the fiber delivery plant and the carding roller is very complicated and requires a great deal of energy for operation.

Zur Festigung eines Falschdralls in einem Kern aus Stapelfasern ist es bekannt, die Stapelfasern von einer Kardiervorrichtung einem einen Unterdruckkanal durchlaufenden falsch gedrehten Faden aus Stapelfasern zuzuführen, wodurch sich ein glattes Kerngarn ohne Schlingen ergibt (SU-A 445 210).To fix a false twist in a core made of staple fibers, it is known to feed the staple fibers from a carding device to a wrongly twisted thread made of staple fibers passing through a vacuum channel, which results in a smooth core yarn without loops (SU-A 445 210).

Es hat sich gezeigt, dass die dabei erreichbare Kernverdichtung unzureichend ist, so dass das fertige Garn unbefestigte Abschnitte aufweist, wodurch die Garnfestigkeit so weit reduziert wird, dass das Garn praktisch unbrauchbar für die Weiterverarbeitung ist.It has been shown that the core compression that can be achieved is inadequate, so that the finished yarn has unsecured sections, as a result of which the yarn strength is reduced to such an extent that the yarn is practically unusable for further processing.

Bekannt ist schliesslich eine Vorrichtung zur Herstellung von Effektgarn (DE-B-2439732), bei der ein Grundfaden und ein Effektfaden in Form eines Fadens oder eines Faserbands verwendet werden. Die Vorrichtung hat ausserdem eine Hohlspindel mit einem mit dieser umlaufenden daran befestigten Falschdrallelement. Auf der Hohlspindel ist ein dünner Befestigungsfaden aufgewickelt. Beim Durchlaufen der Hohlspindel und beim Laufen über das Falschdrallelement werden der Grundfaden und der Effektfaden falsch gedreht. Die Fixierung der dadurch gebildeten Effekte erfolgt durch den von der Hohlspindel abgewickelten Befestigungsfaden.Finally, a device for the production of fancy yarn is known (DE-B-2439732), in which a base thread and a fancy thread in the form of a thread or a fiber band are used. The device also has a hollow spindle with a false twist element attached to it and rotating around it. A thin fastening thread is wound on the hollow spindle. When running through the hollow spindle and when running over the false twist element, the basic thread and the effect thread are rotated incorrectly. The effects thus formed are fixed by the fastening thread unwound from the hollow spindle.

Die Verwendung der rotierenden Hohlspindel mit dem darauf aufgewickelten Befestigungsfaden erfordert nach dem Fadenaufbrauch einen Austausch der Spindel, wofür der Herstellungsprozess unterbrochen werden muss. Ausserdem erfordert die richtige Bewicklung der Hohlspindel mit dem Befestigungsfaden weitere spezielle Einrichtungen. Dadurch, dass die Masse der Spindel mit dem darauf aufgewickelten Befestigungsfaden relativ gross ist, wird die Fertigungsgeschwindigkeit für das Effektgarn begrenzt.The use of the rotating hollow spindle with the fastening thread wound on it requires an exchange of the spindle after the thread has been used up, for which purpose the production process must be interrupted. In addition, the correct winding of the hollow spindle with the fastening thread requires further special devices. Because the mass of the spindle with the fastening thread wound on it is relatively large, the production speed for the fancy yarn is limited.

Die der Erfindung zugrunde liegende Aufgabe besteht darin, das Verfahren bzw. die Vorrichtung der eingangs genannten Art so auszubilden, dass bei hoher Produktionsgeschwindigkeit auf einfache Weise eine zuverlässige Fixierung und Festigung der aus Fäden und/oder Fasern gebildeten Effekte am erzeugten Effektgarn ermöglicht wird.The object on which the invention is based is to design the method and the device of the type mentioned at the outset in such a way that, at high production speeds, reliable fixing and strengthening of the effects formed from threads and / or fibers on the fancy yarn produced is made possible in a simple manner.

Diese Aufgabe wird bei dem Verfahren der eingangs genannten Art dadurch gelöst, dass wenigstens auf den Grundfaden beim Durchlauf durch einen umgrenzten vor dem Falschdrallelement angeordneten Raum während der Ausbildung des Falschdralls vereinzelte Fasern aufgeblasen werden, deren Länge so bemessen ist, dass nur ihr eines Ende durch den Falschdrall eingebunden wird, während ihr freies Faserende beim teilweisen Aufdrehen des Falschdralls um das gebildete Effektgarn gedreht wird.This object is achieved in the method of the type mentioned at the outset that at least on the basic thread as it passes through a delimited space arranged in front of the false twist element during the formation of the false twist, individual fibers are blown, the length of which is such that only one end thereof passes through the false twist is integrated, while its free fiber end is rotated around the fancy yarn formed when the false twist is partially untwisted.

Dabei können die einen Enden der das Effektgarn verfestigende Fasern durch den Falschdrall des Grundfadens und wenigstens eines Effektfadens eingebunden werden. Es ist auch möglich, dass zusammen mit den das Effektgarn verfestigenden Fasern weitere Fasern aufgeblasen werden, die länger und stärker sind als die das Effektgarn verfestigenden Fasern und die um den Grundfaden im umgrenzten Raum unter Bildung von Effekten verdreht werden. Dabei sind die weiteren Fasern wenigstens doppelt so lang wie die das Effektgarn verfestigenden Fasern und bis zum Zehnfachen stärker als diese.The one ends of the fibers solidifying the fancy yarn can be bound in by the false twist of the base thread and at least one fancy thread. It is also possible that together with the fibers that solidify the fancy yarn, other fibers are inflated that are longer and stronger than the fibers that solidify the fancy yarn and that are twisted around the basic thread in the confined space to form effects. The other fibers are at least twice as long as the fibers that consolidate the fancy yarn and up to ten times stronger than these.

Die Fasern können unmittelbar vor dem Aufblasen durch Verziehen aus Vorgarn vereinzelt werden, und zwar sowohl die für die Verfestigung verwendeten kürzeren als auch die Effekte bildenden längeren Fasern. Die Effekte bildenden Fasern können auch zusätzlich zu einem Effektfaden vorgesehen werden.The fibers can be separated by warping from roving immediately before inflation, both the shorter fibers used for the consolidation and the longer fibers which produce the effects. The fibers forming the effects can also be provided in addition to an effect thread.

Die genannte Aufgabe wird ausgehend von der Vorrichtung der eingangs genannten Art durch eine in Fadenlaufrichtung unmittelbar vor der Hohlspindel angeordnete Kammer mit einem Einlass und einem Auslass, die in Fadenlaufrichtung fluchten, und einen fadeneintrittseitig mit einem Ende seitlich in die Kammer mündenden Kanal für den pneumatischen Fasertransport gelöst, dessen anderes Ende einem Faserlieferwerk zugeordnet ist.The stated object is achieved on the basis of the device of the type mentioned at the outset by a chamber arranged in the thread running direction directly in front of the hollow spindle with an inlet and an outlet, which are aligned in the thread running direction, and a channel for the pneumatic fiber transport, which ends at the end with a side opening into the chamber solved, the other end is assigned to a fiber supply plant.

Dabei beträgt der Durchmesser des Einlasses in die Kammer und ihres Auslasses zweckmässigerweise höchstens das drei- bis vierfache der grössten Querschnittsabmessung des gebildeten Effektgarns.The diameter of the inlet into the chamber and its outlet is expediently at most three to four times that largest cross-sectional dimension of the fancy yarn formed.

Die Achse des Kanals bildet mit der Achse der Kammer in Fadenlaufrichtung gesehen zweckmässigerweise einen Winkel, der kleiner als 90° ist.The axis of the channel expediently forms an angle with the axis of the chamber in the thread running direction that is less than 90 °.

Die Kammer kann in Fadenlaufrichtung nach der Einmündung des Kanals doppelwandig ausgebildet sein, wobei die innere Wand von Luftauslasslöchern durchbrochen ist.The chamber can be double-walled in the thread running direction after the opening of the channel, the inner wall being penetrated by air outlet holes.

Weiterhin kann der Kammer in Fadenlaufrichtung eine Luftabsaugeinrichtung nachgeordnet werden, die mit der Luftzuführung für die pneumatische Fasernförderung im Kanal verbunden ist.Furthermore, an air suction device can be arranged downstream of the chamber in the thread running direction, which is connected to the air supply for the pneumatic fiber conveyance in the channel.

Aufgrund der Druckverhältnisse und der Grösse bzw. Länge des Kanals für die pneumatische Faserförderung werden die vom Lieferwerk abgezogenen Fasern in der erforderlichen Weise vereinzelt, wobei sie am Ende des Kanals eine Geschwindigkeit haben, die grösser ist als die Geschwindigkeit des sie zuführenden Lieferwerks. Wenn die Fasern auf den falsch gedrehten Grundfaden und gegebenenfalls Effektfaden treffen, werden sie mit ihrem einen Ende davon erfasst, während ihr freies Ende gespannt gehalten wird. Aufgrund ihrer Länge drehen sich die Fasern jedoch nicht um den Grundfaden, gegebenenfalls mit Effektfaden, sondern erst bei der nach dem Verlassen des Falschdrallelements auftretenden Entzwirnung, wodurch die gebildeten Effekte gefestigt und fixiert werden. Wenn längere Fasern mit aufgeblasen werden, werden diese von dem falsch gedrehten Grundfaden, gegebenenfalls mit Effektfaden, erfasst und legen sich im Gegensatz zu den kürzeren Fasern um den Grundfaden, wobei die Verfestigung anschliessend in der genannten Weise durch die kürzeren Fasern beim Entzwirnen bzw. Aufdrehen des Falschdralls erfolgt. Nach dem erfindungsgemässen Verfahren und mit der erfindungsgemässen Vorrichtung lassen sich verschiedene Fasern und Fäden verarbeiten, wobei für die Festigung Polyesterfasern mit einer Länge bis 80 mm eingesetzt werden können. Aufgrund der geringen Masse der rotierenden Falschdralleinrichtung sowie aufgrund der geringen Masse der Luftabsaugeinrichtung lassen sich sehr hohe Produktionsgeschwindigkeiten in der Grössenordnung von bis zu 250 m/min erreichen. Die eingesetzte Vorrichtung ist äusserst kompakt in ihrer Bauweise, braucht wenig Platz, wenig Energie und ist sehr unkompliziert aufgebaut.Due to the pressure ratios and the size or length of the channel for the pneumatic fiber conveying, the fibers drawn off from the supplying plant are separated in the required manner, whereby at the end of the channel they have a speed that is greater than the speed of the supplying plant feeding them. If the fibers hit the wrongly twisted base thread and, if applicable, effect thread, they are gripped by one end of it, while their free end is kept taut. Due to their length, however, the fibers do not rotate around the base thread, possibly with effect thread, but only when the twisting occurs after leaving the false twist element, as a result of which the effects formed are consolidated and fixed. If longer fibers are also inflated, they are caught by the wrongly twisted base thread, if necessary with effect thread, and, in contrast to the shorter fibers, lie around the base thread, with the consolidation then in the manner mentioned by the shorter fibers when twisting or untwisting of false twist. Various fibers and threads can be processed according to the method according to the invention and with the device according to the invention, wherein polyester fibers with a length of up to 80 mm can be used for the strengthening. Due to the low mass of the rotating false twist device and the low mass of the air suction device, very high production speeds in the order of up to 250 m / min can be achieved. The device used is extremely compact in its construction, requires little space, little energy and is constructed in a very uncomplicated manner.

Anhand der Zeichnungen wird die Erfindung beispielsweise näher erläutert. Es zeigt:

  • Fig. 1 eine erste Ausführungsform einer erfindungsgemässen Vorrichtung;
  • Fig. 2 im Längsschnitt eine erste Ausführungsform der in der Vorrichtung eingesetzten Kammer;
  • Fig. 3 in einer Ansicht wie Fig. 2 eine zweite Ausführungsform der Kammer, und
  • Fig. 4 in einer Ansicht wie Fig. 1 eine zweite Ausführungsform der Vorrichtung.
The invention is explained in more detail, for example, with reference to the drawings. It shows:
  • 1 shows a first embodiment of a device according to the invention;
  • Figure 2 shows in longitudinal section a first embodiment of the chamber used in the device.
  • Fig. 3 in a view like Fig. 2, a second embodiment of the chamber, and
  • Fig. 4 in a view like Fig. 1 shows a second embodiment of the device.

Die in Fig. 1 gezeigte Vorrichtung hat ein aus mehreren Walzenpaaren bestehendes Faserlieferwerk 1, mit dem aus einem Vorgarn 14 in Form eines Faserbandes Fasern gezogen und über einen Kanal 7 für einen pneumatischen Fasertransport geführt werden. Von einer nicht gezeigten Vorratsspule wird ein Grundfaden 4 über eine Spanneinrichtung in Form einer Fadenbremse 5 über eine Umlenkrolle entweder durch die Nut 3 in einem Lieferwalzenpaar 2 geführt, ohne von diesem Lieferwalzenpaar gefördert zu werden, oder am Lieferwalzenpaar 2 durch einen Führungsablenker 3.1 vorbeigeführt. Durch das Lieferwalzenpaar 2 wird ein aus einem Faserband 13 oder einem Faden bestehendes Effektgarn mit einer Geschwindigkeit gefördert, die um 20 bis 300% grösser ist als die Geschwindigkeit des Grundfadens 4. Der Grundfaden 4 mit dem Effektfaden 13 durchläuft eine rotierende Hohlspindel 9 und ist über ein mit der Hohlspindel 9 umlaufendes Falschdrallelement 12 geführt. Das gebildete Effektgarn 15 wird durch ein in Laufrichtung nach dem Falschdrallelement 12 angeordnetes Abzugswalzenpaar 10 mit der Geschwindigkeit des Grundfadens 4 abgeführt. Der Grundfaden wird durch die Bremse 5 und das Abzugswalzenpaar 10 gespannt gehalten. Der Effektfaden 13 bildet aufgrund des erteilten Falschdralls zwischen dem Falschdrallelement 12 und der Zusammenführungsstelle von Grundfaden 4 und Effektfaden 13 Effekte, beispielsweise Schlingen, wobei die Zusammenführungsstelle entweder durch den Walzenspalt des Lieferwalzenpaares 2 des Effektfadens 13 oder an der Zuführungsstelle des Grundfadens zum Effektfaden über den Führungsablenker 3.1 definiert ist.The device shown in FIG. 1 has a fiber delivery unit 1 consisting of several pairs of rollers, with which fibers are drawn from a roving 14 in the form of a fiber band and guided over a channel 7 for a pneumatic fiber transport. From a supply spool, not shown, a base thread 4 is guided via a tensioning device in the form of a thread brake 5 via a deflection roller either through the groove 3 in a pair of delivery rollers 2 without being conveyed by this pair of delivery rollers, or is guided past the pair of delivery rollers 2 by a guide deflector 3.1. The delivery roller pair 2 conveys a fancy yarn consisting of a sliver 13 or a thread at a speed which is 20 to 300% greater than the speed of the base thread 4. The base thread 4 with the effect thread 13 passes through a rotating hollow spindle 9 and is over guided with the hollow spindle 9 false twist element 12. The effect yarn 15 formed is removed by a pair of draw-off rollers 10 arranged in the running direction after the false twist element 12 at the speed of the base thread 4. The basic thread is held taut by the brake 5 and the pair of draw rollers 10. The effect thread 13 forms effects, for example loops, due to the false twist given between the false twist element 12 and the junction point of base thread 4 and effect thread 13, the junction point either through the nip of the delivery roller pair 2 of the effect thread 13 or at the feed point of the base thread to the effect thread via the guide deflector 3.1 is defined.

In Fadenlaufrichtung unmittelbar vor der Hohlspindel 9 ist eine Luftabsaugeinrichtung 11 und davor eine Kammer 8 angeordnet, die einen Einlass 16 und einen fluchtend in Fadenlaufrichtung dazu angeordneten Auslass 17 aufweist und in die seitlich der Kanal 7 mündet, wobei die Luftabsaugeinrichtung 11 bei dem gezeigten Ausführungsbeispiel mit der Luftzuführung 6 in dem Kanal 7 für den pneumatischen Tranport verbunden ist.In the thread running direction immediately in front of the hollow spindle 9 there is an air suction device 11 and in front of it a chamber 8 which has an inlet 16 and an outlet 17 arranged flush with it in the thread running direction and into which the channel 7 opens out to the side, the air suction device 11 also being shown in the exemplary embodiment shown the air supply 6 is connected in the channel 7 for the pneumatic transport.

Wie aus den Fig. 2 und 3 zu ersehen ist, hat die Kammer 8 einen Einlass 16 und einen Auslass 17, deren Innendurchmesser den drei- bis vierfachen Durchmesser des fertigen Garns übersteigt und erreicht, wobei der Anschluss 17.1 der Saugeinrichtung 11 bzw. der Hohlspindel 9 entsprechend bemessen ist. Der Kanal 7 mündet seitlich in die Kammer 8, wobei der Abstand A vom Eintrittsende der Kammer 8 aus eingestellt werden kann, was die Ausbildung der Effekte beeinflusst, beispielsweise die Ausbildung von Dickstellen aufgrund von Ansammlungen von festigenden Fasern begünstigt. Die Achse des Kanals 7 bildet mit der Achse der Kammer 8 zur Fadeneintrittsseite hin einen Winkel, der kleiner als 90° ist. In Fadenlaufrichtung nach der Mündung des Kanals 7 ist die Kammer 8 doppelwandig ausgebildet. Die innere Wand 20 ist vOn. Löchern durchbrochen, durch die Luft hindurchtreten kann, die dann durch eine konzentrische Öffnung in die Luftabsaugeinrichtung 11 abgeführt wird.As can be seen from FIGS. 2 and 3, the chamber 8 has an inlet 16 and an outlet 17, the inner diameter of which exceeds and reaches three to four times the diameter of the finished yarn, the connection 17.1 of the suction device 11 or the hollow spindle 9 is dimensioned accordingly. The channel 7 opens laterally into the chamber 8, the distance A from the inlet end of the chamber 8 being adjustable, which influences the formation of the effects, for example the formation of thick spots due to the accumulation of strengthening fibers. The axis of the channel 7 forms an angle with the axis of the chamber 8 to the thread entry side, which is less than 90 °. In the thread running direction after the mouth of the channel 7, the chamber 8 is double-walled. The inner wall 20 is on. Broken holes Chen, can pass through the air, which is then discharged through a concentric opening in the air suction device 11.

Bei der in Fig. 3 gezeigten Ausführungsvariante sind die Löcher für die Luftabführung in einer an die Kammer 8 in Fadenlaufrichtung angrenzenden Hülse 20' vorgesehen, die mit dem Auslass 17 versehen ist.In the embodiment variant shown in FIG. 3, the holes for the air discharge are provided in a sleeve 20 ′, which is adjacent to the chamber 8 in the thread running direction and is provided with the outlet 17.

Der Effektfaden 13 in Form eines Faserbandes, Garns oder Fadens wird durch das Lieferwalzenpaar 2 mit einer grösseren Geschwindigkeit als der Grundfaden 4 zugeführt. Bei rotierendem Falschdrallelement 12 stellt sich ein bis zum Spalt des Lieferwalzenpaars 2 zurücklaufender Falschdrall ein, wobei der Effektfaden Schlingen bildet. Durch das Faserlieferwerk 1 wird ein Faserband 14 zugeführt, dessen Fasern schliesslich mehr oder weniger vereinzelt den Kanal 7 erreichen, in dem durch den darin herrschenden Unterdruck und abhängig von der Länge eine weitere Faservereinzelung stattfindet. Die Fasern werden pneumatisch in die Kammer 8 geführt, wo sie auf den falsch gedrehten Grundfaden mit Effektfaden treffen und mit ihrem einen Ende von den sich drehenden Fäden erfasst werden. Die so erfassten Fasern erreichen die Wirkungszone des Falschdrallelements 12, ohne einen Drall aufgrund der Umdrehung ihres freien Endes zu erhalten. In Fadenlaufrichtung hinter dem Falschdrallelement 12 erhalten dann die erfassten Fasern bei der Entzwirnung eine tatsächliche Drehung und verdichten zuverlässig den Grund- und Effektfaden, wobei die gebildeten Effekte in Form von Schlingen gefestigt und fixiert werden. Diese Festigung wird durch die Beibehaltung einer gewissen Drehung zwischen dem Grundfaden und dem Effektfaden verstärkt, wobei diese Drehung die Drehrichtung im Abschnitt zwischen dem Falschdrallelement 12 und den Abzugswalzen 10 aufweist. Das so hergestellte Effektgarn 15 wird von dem Abzugswalzenpaar 10 abgezogen und in bekannter Weise auf einer nicht gezeigten Spule aufgewickelt.The effect thread 13 in the form of a sliver, yarn or thread is fed through the pair of delivery rollers 2 at a greater speed than the base thread 4. When the false twist element 12 rotates, a false twist that runs back to the nip of the delivery roller pair 2 occurs, the effect thread forming loops. A fiber sliver 14 is fed through the fiber delivery unit 1, the fibers of which finally reach the channel 7 more or less occasionally, in which a further fiber separation takes place due to the negative pressure prevailing therein and depending on the length. The fibers are fed pneumatically into the chamber 8, where they meet the wrongly rotated basic thread with effect thread and are caught at one end by the rotating threads. The fibers thus detected reach the effective zone of the false twist element 12 without receiving a twist due to the rotation of their free end. In the thread running direction behind the false twist element 12, the detected fibers receive an actual rotation during the untwisting and reliably compress the basic and effect thread, the effects formed being consolidated and fixed in the form of loops. This strengthening is reinforced by maintaining a certain rotation between the base thread and the effect thread, this rotation having the direction of rotation in the section between the false twist element 12 and the take-off rollers 10. The fancy yarn 15 thus produced is drawn off from the pair of draw-off rollers 10 and wound up in a known manner on a spool, not shown.

Bei der in Fig. 4 gezeigten Ausführungsform werden vom Faserlieferwerk 1 zwei Vorgarne 13 und 14 in Form von Faserbändern zum Kanal 7 geführt und vereinzelt, wobei das Vorgarn 14 die Fasern für die Fixierung und Festigung ergibt, während das Vorgarn 13 Fasern für eine Effektbildung ergibt. Die Fasern des Vorgarns 14 sind um das sechs- bis zehnfache dünner als die Fasern des Vorgarns 13 und erheblich kürzer als diese, beispielsweise beträgt die Länge der sich aus dem Vorgarn 14 ergebenden Fasern 60 mm, während die Fasern aus dem Vorgarn 13 eine Länge von 100 mm oder mehr aufweisen. Die Fasern aus den Vorgarnen 13 und 14 werden, nachdem sie in der erforderlichen Weise vereinzelt sind, über den Kanal 7 pneumatisch in die Kammer 8 geführt, durch die der Grundfaden 4 läuft, dem durch das Falschdrallelement 12 und Falschdrall erteilt wird, wobei bei dem gezeigten Ausführungsbeispiel zusätzlich noch ein Effektfaden 21 zugeordnet ist, der jedoch nicht vorhanden zu sein braucht. Die kürzeren und dünneren Fasern aus dem Vorgarn 14 werden wie bei der Ausführungsform von Fig. 1 mit einem Ende vom Grundfaden 4 erfasst, erhalten jedoch bis zum Falschdrallelement 12 keine Drehung, während die erheblich längeren und dickeren Fasern aus dem Vorgarn 13 um den Grundfaden 4 verdreht werden und Effekte bilden. In Fadenlaufrichtung hinter dem Falschdrallelement 12 festigen die aus dem Vorgarn 14 erhaltenen kürzeren und dünneren Fasern in der beschriebenen Weise den Falschdrall zwischen dem Grundfaden 4 und den aus dem Vorgarn 13 erhaltenen längeren Fasern durch eine Drehung gegen das Abzugswalzenpaar 10 hin, wobei zur Bereicherung der Effekte noch der von einer Spule 22 abgezogene Effektfaden 21 beiträgt, der auf die beschriebene Weise ebenfalls fixiert wird.In the embodiment shown in FIG. 4, two roving yarns 13 and 14 in the form of fiber ribbons are guided and separated from the channel 7 by the fiber delivery plant 1, the roving yarn 14 giving the fibers for fixing and strengthening, while the roving yarn 13 gives fibers for an effect formation . The fibers of the roving 14 are six to ten times thinner than the fibers of the roving 13 and considerably shorter than this, for example the length of the fibers resulting from the roving 14 is 60 mm, while the fibers from the roving 13 have a length of 100 mm or more. The fibers from the rovings 13 and 14, after they are separated in the required manner, are pneumatically guided via the channel 7 into the chamber 8 through which the basic thread 4 runs, which is given by the false twist element 12 and false twist, in which case shown embodiment is additionally assigned an effect thread 21, which, however, need not be present. The shorter and thinner fibers from the roving 14 are gripped with one end by the base thread 4 as in the embodiment of FIG. 1, but do not get any twist to the false twist element 12, while the considerably longer and thicker fibers from the roving 13 around the base thread 4 be twisted and form effects. In the thread running direction behind the false twist element 12, the shorter and thinner fibers obtained from the roving 14 strengthen the false twist between the basic thread 4 and the longer fibers obtained from the roving 13 by a rotation against the pair of take-off rollers 10, thereby enriching the effects still contributed by the bobbin 22 effect thread 21, which is also fixed in the manner described.

Claims (10)

1. Process for the production of effect yarns from a base thread transported at constant tension and delivery speed, and an effect thread material, to which is given a false twist, whereby the effects on the base thread formed by the effect thread material are fixed by additional thread material, and the effect yarn formed is drawn-off by the delivery speed of the base thread, characterised in that single fibres are blown at least onto the base thread as it passes through an enclosed area disposed in front of the false twist element during formation of the false twist, the length of which single fibres is so dimensioned that only its one end is bound-in by the false twist, whilst its free fibre end is twisted round the effect yarn formed during the partial twisting of the false twist.
2. Process according to claim 1, characterised in that the one ends of the fibres securing the effect yarn are bound-in by the false twist of the base thread and of at least one effect thread.
3. Process according to claim 1 or 2, characterised in that together with the fibres securing the effect yarn, further fibres are blown on which are longer and stronger than the fibres securing the effect yarn and which are twisted round the base thread in the surrounded space during the formation of effects.
4. Process according to claim 3, characterised in that the other fibres are at least twice as long as the fibres securing the effect yarn and up to ten times stronger than these.
5. Process according to one of the perceding claims, characterised in that the fibres are separated by distorting from pre-yarn directly before the blowing-on.
6. Device for carrying out the process according to one of the preceding claims, with a supply line for the base thread over a tensioning device, with a supply line for the effect thread material, with a pair of draw-off rollers for the effect yarn formed, and with a rotatable hollow spindle arranged in front of it in the thread path direction and carrying a false twist element on the discharge side, characterised by a chamber (8) disposed directly in front of the hollow spindle (9) in the thread path direction, with an inlet (16) and an outlet (17), which are in alignment'in the thread path direction, and a duct (7), for pneumatic fibre transport, which opens on the thread inlet side with one end laterally into the chamber (8), the other end of which is associated with a fibre supply unit (1).
7. Device according to claim B, characterised in that the diameter of the inlet (16) into the chamber (8) and of its outlet (17) is at the most three to four times the largest cross section measurement of the effect yarn formed.
8. Device according to claim 6 or 7, characterised in that the axis of the duct (7) forms with the axis of the chamber (8) in the thread path direction an angle which is smaller than 90°.
9. Device according to one of claims 6 to 8, characterised in that the chamber (8) in the thread path direction is constructed with double walls after the discharge from the duct (7), whereby the inner wall (20) is interrupted by air outlet apertures.
10. Device according to one of claims 6 to 9, characterised by an air suction device (11) connected subsequently to the chamber (8) in the thread path direction, which device is connected to the air supply line (6) for the.pneumatic fibre supply in the duct (7).
EP82100523A 1981-01-26 1982-01-26 Method and device for the manufacturing of an effect yarn Expired EP0057015B1 (en)

Applications Claiming Priority (2)

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BG50541/81 1981-01-26
BG8150541A BG33984A1 (en) 1981-01-26 1981-01-26 A method of and a device for the production of effective yarns

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EP0057015A2 EP0057015A2 (en) 1982-08-04
EP0057015A3 EP0057015A3 (en) 1982-08-25
EP0057015B1 true EP0057015B1 (en) 1984-06-20

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EP (1) EP0057015B1 (en)
JP (1) JPS57149519A (en)
BG (1) BG33984A1 (en)
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DD (1) DD202189A5 (en)
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ES (1) ES8305858A1 (en)

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DE3719280A1 (en) * 1987-06-10 1988-12-22 Fritz Stahlecker TWO COMPONENT THREAD
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ITPO20130006A1 (en) * 2013-09-06 2015-03-07 Temat Snc Di Marzano Nicola & C METHOD FOR THE PRODUCTION OF FANTASY YARN
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CN107503015B (en) * 2017-08-21 2019-05-17 江南大学 A kind of colour-spun yarns process units and production method
CN109811442B (en) * 2019-03-13 2023-10-27 经纬智能纺织机械有限公司 Six-channel alternating drafting twisting coating ring spindle fancy yarn forming device and method
CN109825918B (en) * 2019-03-13 2024-02-02 江南大学 Single-draft channel hollow spindle fancy yarn forming device and method
JP6822708B1 (en) * 2020-03-25 2021-01-27 株式会社Itoi生活文化研究所 Composite paper yarn, the manufacturing apparatus, and the manufacturing method
CN112725960B (en) * 2020-12-28 2022-03-18 江苏恒力化纤股份有限公司 Cotton and combed doffed cotton yarn and spinning method thereof
CN112760772B (en) * 2020-12-28 2022-03-18 江苏恒力化纤股份有限公司 Spinning method of cotton-flax fancy yarn
CN112725961B (en) * 2020-12-28 2022-03-18 江苏恒力化纤股份有限公司 Spinning method of cotton-wool blended yarn and cotton-wool blended yarn

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ES508938A0 (en) 1983-05-01
BG33984A1 (en) 1983-06-15
ES8305858A1 (en) 1983-05-01
CA1213131A (en) 1986-10-28
US4450675A (en) 1984-05-29
DE3260256D1 (en) 1984-07-26
JPS57149519A (en) 1982-09-16
DD202189A5 (en) 1983-08-31
EP0057015A2 (en) 1982-08-04
EP0057015A3 (en) 1982-08-25
JPS6219528B2 (en) 1987-04-30

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