EP1038997A1 - Apparatus for interlacing at least one staple fibre yarn with an elastane yarn - Google Patents

Apparatus for interlacing at least one staple fibre yarn with an elastane yarn Download PDF

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Publication number
EP1038997A1
EP1038997A1 EP99106310A EP99106310A EP1038997A1 EP 1038997 A1 EP1038997 A1 EP 1038997A1 EP 99106310 A EP99106310 A EP 99106310A EP 99106310 A EP99106310 A EP 99106310A EP 1038997 A1 EP1038997 A1 EP 1038997A1
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EP
European Patent Office
Prior art keywords
yarn
nozzles
air
jets
yarns
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.)
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EP99106310A
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German (de)
French (fr)
Inventor
Benno JL. Sukarno-Hatta 51 Grob
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SSM Schaerer Schweiter Mettler AG
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SSM Schaerer Schweiter Mettler AG
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Priority to EP99106310A priority Critical patent/EP1038997A1/en
Publication of EP1038997A1 publication Critical patent/EP1038997A1/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/08—Twist arresters
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams

Definitions

  • the invention is in the field of the production of elastic yarns by air swirling or swirling.
  • Elastic yarns the possible uses of which are have increased significantly recently (e.g. underwear, sportswear, outerwear, Shirts, pullovers) are increasingly processed as composite yarns, namely in Form of winding yarns, twists and core yarns.
  • the twisted yarns are either by whirling (also referred to in the literature as AC for "air-covering") or by twisting (also known as CC for "conventional covering” in the literature) manufactured;
  • AC whirling
  • CC Conventional covering
  • the filament yarn is aerodynamically interlaced a kind of loop thread with the elastane.
  • the swirled yarn shows large volume differences, the elastane component being connected to the filament yarn only in a punctiform manner and the elastane yarn is partially visible.
  • the CC process is the elastane component completely covered by filament yarn and practically invisible, and that twisted yarn shows a relatively even structure.
  • the AC process has so far been limited to filament yarns and can be used for pure staple yarns are not used, the main reason being that the connection between the elastane component and filament yarn discontinuously on each other spaced points, so the two yarns between the connection points lie loosely next to each other.
  • This known device is now to be improved by the invention in such a way that by enabling high yarn speeds, the economy of the above new process can be increased significantly.
  • the stability of the improved from the elastic yarn and the staple yarn wrapped yarn so far that this can be easily processed.
  • the present invention relates at least to a device for air swirling a stacking yarn with elastane by means of three nozzles arranged one behind the other, which Whirl the yarn continuously with air, one in the two outer nozzles Twisting of the yarn in one direction and in the middle nozzle in the other direction he follows.
  • the device according to the invention is characterized in that in the yarn running direction means for blocking the rotation are provided before the first and after the last nozzle are.
  • these blocking agents are those according to the invention Device arranged offset relative to the axis of the nozzles Yarn guides formed.
  • the device for each yarn guide is opposite to the axis of the nozzles offset yarn deflection assigned.
  • the use of versus the nozzle and Garnachse offset yarn guides as a blocking agent has the advantage that much higher production speeds can be achieved. That through the twisting yarn formed has an extraordinarily high stability and can be processed very well, e.g. twisted, knitted or woven.
  • the device according to the invention serves as an accompanying function for folding to tie the elastic yarn with the staple yarn and allows thereby the "twisting" of elastic cotton yarn in double wire machines, which was previously not possible.
  • a third preferred embodiment of the device according to the invention is thereby characterized that the nozzles each other and the yarn guides from the nozzles each are equally spaced, the distance from the yarn guides to the adjacent one Nozzle is less than the distance between the nozzles.
  • The is preferably Distance of the yarn guides from the nozzles about half the distance between the Nozzles.
  • the distance between the nozzles is between 30 and 80 mm and is preferably 44 mm.
  • a further preferred embodiment of the device according to the invention is thereby characterized in that the nozzles are connected to a chamber-like air reservoir are, which has two compressed air connections, which are arranged so that at all Nozzles have a uniform air flow.
  • the swirling device designated by the reference symbol V essentially exists from a serving as an air reservoir, box-shaped chamber 1 with three on the Chamber assembled and from this with compressed air fed nozzles 2, 2 'and 2 "and with bearing arms (not shown) fixed to or attached to the chamber Yarn guide rollers 3 and deflection rollers 4.
  • the chamber 1 also has two compressed air connections 5 on.
  • the device V is for installation in an AC (Air Covering) machine provided, in which the device V at least one staple yarn F and Elastane yarn E for interlacing and the resulting from interlacing Umwindegarn U is guided by the device V to a winding AW.
  • the direction of the thread is indicated by an arrow A.
  • the yarn is preferably obtained through the middle one Nozzle 2 'has a Z-turn and through the outer nozzles 2 and 2 "an S-turn.
  • the Swirling takes place through the nozzles 2, 2 'and 2 "depending on the yarn materials and their fineness in the flow, in counterflow or in neutral flow.
  • the compressed air connections 5 of the chamber 1 are arranged symmetrically and are in the Middle between the nozzles 2, 2 'and 2', 2 ", so that in the area of the feed lines to the Nozzles have the same pressure and flow conditions and are present on all nozzles uniform air flow takes place.
  • the arranged outside the outer nozzles 2 and 2 " Yarn guide rollers 3 are offset against the axis of the nozzles 2, 2 'and 2 ", so that the yarns F and E and the wrapping yarn U easily out of the axis of the nozzles 2, 2 'and 2 "are deflected and not only lie tangentially on the yarn guide rollers 3, but also wrap them around at a certain angle. This ensures that the yarn twist caused by the outer nozzles 2 and 2 ", that of these nozzles too the yarn guide rollers 3 runs, is blocked on the yarn guide rollers and not can continue.
  • the distance between the outer nozzles 2, 2 "and the yarn guide rollers 3 is half the distance between the nozzles, preferably 22 mm.
  • the size of this Distance has a significant impact on the quality of the swirl and therefore on the quality of the thread.
  • the lateral displacement of the thread guide rollers 3 relative to the nozzle axis is relatively small and is a few, preferably about 2 to 10 mm. This offset enables a higher thread speed.
  • Every thread guide roll 3 is assigned a deflection roller 4, which is in the opposite direction to the axis of the nozzles is staggered.
  • the deflection rollers 4 are for setting the thread tension adjustably fastened on its carrier. Both the yarn guide rollers 3 and the guide rollers 4 are ball-bearing.
  • the air supply to the nozzles 2, 2 'and 2 " is controlled by means of a proportional valve (not shown). This brings the air pressure to the thread speed adapted, which is particularly important for fine yarns. If with the device Single thread to be swirled with elastane is to control the air pressure in Thread speed function to ensure the quality of the interlacing required. Such a control proves to be in the case of thread breaks and their removal also very beneficial.
  • Thread insulation for example a disc brake, can be provided, which the clamping force reduced when starting with increasing thread speed and when braking and stopping increased with decreasing thread speed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The appts. to combine a staple fiber yarn (F) with an elastane stretch yarn (E), by an air eddy action, has at least three jets (2,2',2) in succession where the yarns (F,E) are continuously eddied by air. The two outer jets (2,2) twist the yarns in one direction, and the center jet (2') twists the yarns in the opposite direction. A unit to block yarn twisting is in front of the first jet (2) and after the final jet (2) in the direction (A) of yarn travel. The yarn twist block is applied by yarn guides (3), offset from the axis of the jets (2,2',2). Each yarn guide (3) works with a yarn deflector (4), offset from the jet axis in the opposite direction to the yarn guide position. The yarn guides (3) and deflectors (4) are rotating rollers. The intervals are equal between the jets (2,2',2), at 30-80 mm and pref. 44 mm. The gaps between the yarn guides (3) and their adjacent jets are equal, but less than the gaps between the jets and pref. one-half the jet interval. The jets (2,2',2) are connected to an air reservoir chamber (1), with two air connections (5) to give an equal air delivery to all the jets (2,2',2). The air delivery to the jets is controlled by a proportional valve to set the air pressure as a function of the yarn travel speed. A controlled yarn brake is at the entry into the assembly (V), with a clamping force which is indirectly proportional to the yarn movement speed. The entry zone into the assembly (V) has a sufficient length to compensate for tension swings in the two yarns (E,F), or the staple fiber yarn (F) and the elastane stretch yarn (E) are fed into the system by separate feeds (6,7).

Description

Die Erfindung liegt auf dem Gebiet der Herstellung von elastischen Garnen durch Luftverwirbelung oder Umwirbelung. Elastische Garne, deren Einsatzmöglichkeiten sich in letzter Zeit stark vergrössert haben (z.B. Unterwäsche, Sportbekleidung, Oberbekleidung, Shirts, Pullover) werden in steigendem Mass als Verbundgarne verarbeitet, und zwar in Form von Umwindegarnen, Zwirnen und Umspinngarnen. Die Umwindegarne werden entweder durch Umwirbeln (in der Literatur auch als AC für "Air-Covering" bezeichnet) oder durch Umzwirnen (in der Literatur auch als CC für "Conventional-Covering" bezeichnet) hergestellt; mit Ausnahme des AC-Verfahrens wird also das Elastomergarn bei allen anderen Verfahren umzwirnt oder umsponnen. Obwohl diese mechanischen Verfahren sehr langsam sind, hat sich das wesentlich schnellere und bezüglich der Produktionskosten billigere AC-Verfahren bisher nur in Teilbereichen durchsetzen können.The invention is in the field of the production of elastic yarns by air swirling or swirling. Elastic yarns, the possible uses of which are have increased significantly recently (e.g. underwear, sportswear, outerwear, Shirts, pullovers) are increasingly processed as composite yarns, namely in Form of winding yarns, twists and core yarns. The twisted yarns are either by whirling (also referred to in the literature as AC for "air-covering") or by twisting (also known as CC for "conventional covering" in the literature) manufactured; With the exception of the AC process, the elastomer yarn is used all other processes twisted or wound. Although this mechanical process are very slow, it has become much faster and in terms of production costs So far, cheaper AC processes have only been able to be implemented in some areas.

Beim AC-Verfahren entsteht durch die aerodynamische Verwirbelung des Filamentgarns mit dem Elastan eine Art Schlingenzwirn. Das verwirbelte Garn zeigt grosse Volumenunterschiede, wobei die Elastankomponente mit dem Filamentgarn nur punktförmig verbunden und das Elastangarn teilweise sichtbar ist. Beim CC-Verfahren hingegen ist die Elastankomponente vom Filamentgarn vollständig umhüllt und praktisch unsichtbar, und das umzwirnte Garn zeigt eine relativ gleichmässige Struktur.With the AC process, the filament yarn is aerodynamically interlaced a kind of loop thread with the elastane. The swirled yarn shows large volume differences, the elastane component being connected to the filament yarn only in a punctiform manner and the elastane yarn is partially visible. In the CC process, however, is the elastane component completely covered by filament yarn and practically invisible, and that twisted yarn shows a relatively even structure.

Das AC-Verfahren ist bisher ausschliesslich auf Filamentgarne beschränkt und kann für reine Stapel garne nicht eingesetzt werden, wobei der Hauptgrund dafür darin liegt, dass die Verbindung zwischen Elastankomponente und Filamentgarn diskontinuierlich an voneinander beabstandeten Punkten erfolgt, so dass die beiden Garne zwischen den Verbindungspunkten lose nebeneinander liegen.The AC process has so far been limited to filament yarns and can be used for pure staple yarns are not used, the main reason being that the connection between the elastane component and filament yarn discontinuously on each other spaced points, so the two yarns between the connection points lie loosely next to each other.

Zur Vermeidung dieses Nachteils und zur Ermöglichung der Anwendung des AC-Verfahrens auf Stapel garne wurde vor kurzem vorgeschlagen, zur Verwirbelung eine Gruppe von drei hintereinander angeordneten Düsen zu verwenden, welche das Garn kontinuierlich verwirbeln, wobei in den beiden äusseren Düsen eine Verdrehung des Garns in der einen und in der inneren Düse in der anderen Richtung erfolgt. Die kontinuierliche Verwirbelung ermöglicht die Verarbeitung von Stapelgarnen und die Anordnung mit den drei Düsen liefert eine relativ stabile Verbindung zwischen den beiden Garnen.To avoid this disadvantage and to enable the use of the AC method On staple yarns, it has recently been proposed to swirl a group of three nozzles arranged one behind the other, which feed the yarn continuously intermingling, with a twist of the yarn in the one and in the inner nozzle in the other direction. The continuous swirl enables the processing of staple yarns and the arrangement with the three Nozzles provide a relatively stable connection between the two yarns.

Durch die Erfindung soll nun diese bekannte Vorrichtung so verbessert werden, dass durch die Ermöglichung hoher Garngeschwindigkeiten die Wirtschaftlichkeit des genannten neuen Verfahrens erheblich gesteigert werden kann. Ausserdem soll die Stabilität des aus dem elastischen Garn und dem Stapelgarn gebildeten Umwindegarns so weit verbessert werden, dass dieses problemlos weiterverarbeitet werden kann.This known device is now to be improved by the invention in such a way that by enabling high yarn speeds, the economy of the above new process can be increased significantly. In addition, the stability of the improved from the elastic yarn and the staple yarn wrapped yarn so far that this can be easily processed.

Die vorliegende Erfindung betrifft eine Vorrichtung zur Luftverwirbelung mindestens eines Stapelgarns mit Elastan mittels dreier hintereinander angeordneter Düsen, welche die Garne kontinuierlich mit Luft verwirbeln, wobei in den beiden äusseren Düsen eine Verdrehung des Garns in der einen und in der mittleren Düse in der anderen Drehrichtung erfolgt.The present invention relates at least to a device for air swirling a stacking yarn with elastane by means of three nozzles arranged one behind the other, which Whirl the yarn continuously with air, one in the two outer nozzles Twisting of the yarn in one direction and in the middle nozzle in the other direction he follows.

Die erfindungsgemässe Vorrichtung ist dadurch gekennzeichnet, dass in Garnlaufrichtung vor der ersten und nach der letzten Düse Mittel zur Blockierung der Verdrehung vorgesehen sind.The device according to the invention is characterized in that in the yarn running direction means for blocking the rotation are provided before the first and after the last nozzle are.

Diese Blockierungsmittel sind gemäss einer ersten bevorzugten Ausführungsform der erfindungsgemässen Vorrichtung durch relativ zur Achse der Düsen versetzt angeordnete Garnführungen gebildet. Bei einer zweiten bevorzugten Ausführungsform der erfindungsgemässen Vorrichtung ist jeder Garnführung eine gegenüber der Achse der Düsen in Gegenrichtung versetzte Garnumlenkung zugeordnet.According to a first preferred embodiment, these blocking agents are those according to the invention Device arranged offset relative to the axis of the nozzles Yarn guides formed. In a second preferred embodiment of the invention The device for each yarn guide is opposite to the axis of the nozzles offset yarn deflection assigned.

Die Mittel zur Blockierung der Verdrehung führen zu einer definierten und reproduzierbaren Umhüllung der Elastankomponente durch das Stapelgarn, wobei das umwirbelte Garn eine relativ gleichmässige Struktur zeigt. Die Verwendung von gegenüber der Düsen- und Garnachse versetzten Garn führungen als Blockierungsmittel hat den Vorteil, dass wesentlich höhere Produktionsgeschwindigkeiten erreicht werden können. Das durch die Verwirbelung gebildete Umwindegarn besitzt eine ausserordentlich hohe Stabilität und kann sehr gut weiterverarbeitet, beispielsweise verzwirnt, gestrickt oder gewebt, werden. Bei der Vorstufe des Zwirnens dient die erfindungsgemässe Vorrichtung als Begleitfunktion für das Fachen zum Binden des elastischen Garns mit dem Stapelgarn und ermöglicht dadurch das "Zwirnen" von elastischen Baumwollgarnen in Doppeldrahtmaschinen, was bisher nicht möglich war.The means for blocking the twist lead to a defined and reproducible Wrapping the elastane component by the staple yarn, the swirled Yarn shows a relatively uniform structure. The use of versus the nozzle and Garnachse offset yarn guides as a blocking agent has the advantage that much higher production speeds can be achieved. That through the twisting yarn formed has an extraordinarily high stability and can be processed very well, e.g. twisted, knitted or woven. In the preliminary stage of twisting, the device according to the invention serves as an accompanying function for folding to tie the elastic yarn with the staple yarn and allows thereby the "twisting" of elastic cotton yarn in double wire machines, which was previously not possible.

Eine dritte bevorzugte Ausführungsform der erfindungsgemässen Einrichtung ist dadurch gekennzeichnet, dass die Düsen gegenseitig und die Garnführungen von den Düsen je gleich beabstandet sind, wobei der Abstand von den Garnführungen zur jeweils benachbarten Düse geringer ist als der Abstand zwischen den Düsen. Vorzugsweise beträgt der Abstand der Garnführungen von den Düsen etwa die Hälfte des Abstands zwischen den Düsen.A third preferred embodiment of the device according to the invention is thereby characterized that the nozzles each other and the yarn guides from the nozzles each are equally spaced, the distance from the yarn guides to the adjacent one Nozzle is less than the distance between the nozzles. The is preferably Distance of the yarn guides from the nozzles about half the distance between the Nozzles.

Bei einer vierten bevorzugten Ausführungsform der erfindungsgemässen Vorrichtung liegt der Abstand zwischen den Düsen zwischen 30 und 80 mm und beträgt vorzugsweise 44 mm.In a fourth preferred embodiment of the device according to the invention the distance between the nozzles is between 30 and 80 mm and is preferably 44 mm.

Eine weitere bevorzugte Ausführungsform der erfindungsgemässen Vorrichtung ist dadurch gekennzeichnet, dass die Düsen an ein kammerartiges Luftreservoir angeschlossen sind, welches zwei Druckluftanschlüsse aufweist, welche so angeordnet sind, dass an allen Düsen ein gleichmässiger Luftdurchsatz erfolgt.A further preferred embodiment of the device according to the invention is thereby characterized in that the nozzles are connected to a chamber-like air reservoir are, which has two compressed air connections, which are arranged so that at all Nozzles have a uniform air flow.

Im folgenden wird die Erfindung anhand eines in der einzigen Zeichnung dargestellten Ausführungsbeispiels näher erläutert; die Zeichnung zeigt eine schematische Darstellung einer erfin-dungsgemässen Vorrichtung zur Luftverwirbelung eines Stapelgarns mit Elastan.The invention is illustrated below with the aid of one in the single drawing Exemplary embodiment explained in more detail; the drawing shows a schematic representation an inventive device for air swirling a staple yarn with elastane.

Die mit dem Bezugszeichen V bezeichnete Verwirbelungsvorrichtung besteht im wesentlichen aus einer als Luftreservoir dienenden, schachtelförmigen Kammer 1 mit drei an der Kammer montierten und aus dieser mit Druckluft gespeisten Düsen 2, 2' und 2" und mit an der Kammer fixierten oder an diese angearbeiteten Lagerarmen (nicht dargestellt) mit Garnführungsrollen 3 und Umlenkrollen 4. Die Kammer 1 weist ausserdem zwei Druckluftanschlüsse 5 auf. Die Vorrichtung V ist zum Einbau in eine AC(Air-Covering)-Maschine vorgesehen, in welcher der Vorrichtung V mindestens ein Stapelgarn F und ein Elastangarn E zur Verwirbelung zugeliefert werden und das bei der Verwirbelung entstandene Umwindegarn U von der Vorrichtung V zu einer Aufwicklung AW geführt ist. Die Fadenlaufrichtung ist mit einem Pfeil A bezeichnet.The swirling device designated by the reference symbol V essentially exists from a serving as an air reservoir, box-shaped chamber 1 with three on the Chamber assembled and from this with compressed air fed nozzles 2, 2 'and 2 "and with bearing arms (not shown) fixed to or attached to the chamber Yarn guide rollers 3 and deflection rollers 4. The chamber 1 also has two compressed air connections 5 on. The device V is for installation in an AC (Air Covering) machine provided, in which the device V at least one staple yarn F and Elastane yarn E for interlacing and the resulting from interlacing Umwindegarn U is guided by the device V to a winding AW. The direction of the thread is indicated by an arrow A.

Wie in der Zeichnung angedeutet ist, wird sowohl das Stapelgarn F als auch das Elastan E von einem Lieferwerk 6 bzw. 7 geliefert, wobei das Lieferwerk 7 für das Elastan seitlich des Fadenlaufs angeordnet ist und im Fadenlauf eine Umlenkwalze 8 für das Elastan E vorgesehen ist. Es ist möglich, auf die Lieferwerke 6 und 7 zu verzichten, wobei aber in diesem Fall in Fadenlaufrichtung A vor der Vorrichtung V ein ausreichend langer Fadeneinlauf vorgesehen sein muss, welcher zum Ausgleich von Spannungsschwankungen erforderlich ist.As indicated in the drawing, both the staple yarn F and the elastane E delivered by a delivery unit 6 or 7, the delivery unit 7 for the elastane on the side the thread path is arranged and in the thread path a deflection roller 8 for the elastane E. is provided. It is possible to dispense with the delivery plants 6 and 7, but in in this case in the thread running direction A in front of the device V a sufficiently long thread inlet must be provided, which is required to compensate for voltage fluctuations is.

Die Düsen 2, 2' und 2", durch die das Stapelgarn F um das Elastan E herumgedreht wird, liegen auf einer gemeinsamen Achse und sind so ausgebildet, dass durch die beiden äusseren Düsen 2 und 2" eine Drehung des Stapelgarns in der einen und durch die mittlere Düse 2' in der anderen Richtung erfolgt. Vorzugsweise erhält das Garn durch die mittlere Düse 2' eine Z-Drehung und durch die äusseren Düsen 2 und 2" eine S-Drehung. Die Düsen 2, 2' und 2" sind voneinander gleich weit beabstandet, wobei der Abstand von Düsenmitte zu Düsenmitte zwischen 30 und 80 mm liegt und vorzugsweise 44 mm beträgt. Das Verwirbeln erfolgt durch die Düsen 2, 2' und 2" in Abhängigkeit von den Garnmaterialien und deren Feinheit im Förderstrom, im Gegenstrom oder im Neutralstrom.The nozzles 2, 2 'and 2 "through which the staple yarn F is rotated around the elastane E, lie on a common axis and are designed so that the two outer Nozzles 2 and 2 "a turn of the staple yarn in one and through the middle Nozzle 2 'takes place in the other direction. The yarn is preferably obtained through the middle one Nozzle 2 'has a Z-turn and through the outer nozzles 2 and 2 "an S-turn. The nozzles 2, 2 'and 2 "are equally spaced from one another, the distance from the center of the nozzle to the center of the nozzle is between 30 and 80 mm and is preferably 44 mm. The Swirling takes place through the nozzles 2, 2 'and 2 "depending on the yarn materials and their fineness in the flow, in counterflow or in neutral flow.

Die Druckluftanschlüsse 5 der Kammer 1 sind symmetrisch angeordnet und liegen in der Mitte zwischen den Düsen 2, 2' und 2', 2", so dass im Bereich der Zuleitungen zu den Düsen gleiche Druck- und Strömungsverhältnisse herrschen und an allen Düsen ein gleichmässiger Luftdurchsatz erfolgt. Die ausserhalb der äusseren Düsen 2 und 2" angeordneten Garnführungsrollen 3 sind gegen die Achse der Düsen 2, 2' und 2" versetzt, so dass die Garne F und E und das Umwindegarn U leicht aus der Achse der Düsen 2, 2' und 2" ausgelenkt werden und an den Garnführungsrollen 3 nicht nur tangential anliegen, sondern diese mit einem bestimmten Winkel umschlingen. Dadurch ist gewährleistet, dass die von den äusseren Düsen 2 und 2" bewirkte Garndrehung, die von diesen Düsen zu den Garnführungsrollen 3 läuft, an den Garnführungsrollen blockiert wird und sich nicht weiter fortsetzen kann. The compressed air connections 5 of the chamber 1 are arranged symmetrically and are in the Middle between the nozzles 2, 2 'and 2', 2 ", so that in the area of the feed lines to the Nozzles have the same pressure and flow conditions and are present on all nozzles uniform air flow takes place. The arranged outside the outer nozzles 2 and 2 " Yarn guide rollers 3 are offset against the axis of the nozzles 2, 2 'and 2 ", so that the yarns F and E and the wrapping yarn U easily out of the axis of the nozzles 2, 2 'and 2 "are deflected and not only lie tangentially on the yarn guide rollers 3, but also wrap them around at a certain angle. This ensures that the yarn twist caused by the outer nozzles 2 and 2 ", that of these nozzles too the yarn guide rollers 3 runs, is blocked on the yarn guide rollers and not can continue.

Der Abstand zwischen den äusseren Düsen 2, 2" und den Garnführungsrollen 3 beträgt die Hälfte des Abstands zwischen den Düsen, vorzugsweise also 22 mm. Die Grösse dieses Abstands hat einen wesentlichen Einfluss auf die Qualität der Verwirbelung und damit auf die Qualität des Umwindegarns. Die seitliche Versetzung der Garnführungsrollen 3 relativ zur Düsenachse ist relativ gering und beträgt einige, vorzugsweise etwa 2 bis 10 mm. Diese Versetzung ermöglicht eine höhere Fadengeschwindigkeit. Jeder Garnführungsrolle 3 ist eine Umlenkrolle 4 zugeordnet, welche zur Achse der Düsen in der Gegenrichtung versetzt angeordnet ist. Die Umlenkrollen 4 sind zur Einstellung der Fadenspannung auf ihrem Träger verstellbar befestigt. Sowohl die Garnführungsrollen 3 als auch die Umlenkrollen 4 sind kugelgelagert.The distance between the outer nozzles 2, 2 "and the yarn guide rollers 3 is half the distance between the nozzles, preferably 22 mm. The size of this Distance has a significant impact on the quality of the swirl and therefore on the quality of the thread. The lateral displacement of the thread guide rollers 3 relative to the nozzle axis is relatively small and is a few, preferably about 2 to 10 mm. This offset enables a higher thread speed. Every thread guide roll 3 is assigned a deflection roller 4, which is in the opposite direction to the axis of the nozzles is staggered. The deflection rollers 4 are for setting the thread tension adjustably fastened on its carrier. Both the yarn guide rollers 3 and the guide rollers 4 are ball-bearing.

Die Steuerung der Luftzufuhr zu den Düsen 2, 2' und 2" erfolgt mittels eines Proportionalventils (nicht dargestellt). Dadurch wird der Luftdruck an die Fadengeschwindigkeit angepasst, was besonders für feine Garne sehr wichtig ist. Wenn mit der Vorrichtung ein Einfachfaden mit Elastan verwirbelt werden soll, ist die Steuerung des Luftdrucks in Funktion zur Fadengeschwindigkeit zur Sicherung der Qualität der Verwirbelung unbedingt erforderlich. Bei Fadenbrüchen und deren Behebung erweist sich eine solche Steuerung ebenfalls als sehr vorteilhaft.The air supply to the nozzles 2, 2 'and 2 "is controlled by means of a proportional valve (not shown). This brings the air pressure to the thread speed adapted, which is particularly important for fine yarns. If with the device Single thread to be swirled with elastane is to control the air pressure in Thread speed function to ensure the quality of the interlacing required. Such a control proves to be in the case of thread breaks and their removal also very beneficial.

Zur weiteren Sicherung der Qualität der Verwirbelung und damit des Umwindegarns U kann im Einlaufteil zwischen der Umlenkwalze 8 und der Vorrichtung V eine gesteuerte Fadendämmung, beispielsweise eine Tellerbremse, vorgesehen sein, welche die Klemmkraft beim Anfahren mit zunehmender Fadengeschwindigkeit verringert und beim Abbremsen und Anhalten mit abnehmender Fadengeschwindigkeit erhöht.To further ensure the quality of the intermingling and thus of the wrap yarn U can be controlled in the inlet part between the deflection roller 8 and the device V. Thread insulation, for example a disc brake, can be provided, which the clamping force reduced when starting with increasing thread speed and when braking and stopping increased with decreasing thread speed.

Claims (10)

Vorrichtung zur Luftverwirbelung mindestens eines Stapelgarns (F) mit Elastan (E) mittels dreier hintereinander angeordneter Düsen (2, 2', 2"), welche die Garne (E, F) kontinuierlich mit Luft verwirbeln, wobei in den beiden äusseren Düsen (2, 2") eine Verdrehung des Garns in der einen und in der mittleren Düse (2') in der anderen Drehrichtung erfolgt, dadurch gekennzeichnet, dass in Garnlaufrichtung (A) vor der ersten (2) und nach der letzten Düse (2") Mittel zur Blockierung der Verdrehung vorgesehen sind.Air swirling device for at least one staple yarn (F) with elastane (E) by means of three nozzles (2, 2 ', 2 ") arranged one behind the other, which feed the yarns (E, F) Whirl continuously with air, one in the two outer nozzles (2, 2 ") Twist of the yarn in one and in the middle nozzle (2 ') in the other direction of rotation takes place, characterized in that in the yarn running direction (A) before the first (2) and after the last nozzle (2 ") means for blocking the rotation are. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Blockierungsmittel durch relativ zur Achse der Düsen (2, 2', 2") versetzt angeordnete Garnführungen (3) gebildet sind.Device according to claim 1, characterized in that the blocking means through yarn guides (3) arranged offset relative to the axis of the nozzles (2, 2 ', 2 ") are formed. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass jeder Garnführung (3) eine gegenüber der Achse der Düsen (2, 2', 2") in Gegenrichtung versetzte Garnumlenkung (4) zugeordnet ist.Device according to claim 2, characterized in that each yarn guide (3) a yarn deflection offset in the opposite direction with respect to the axis of the nozzles (2, 2 ', 2 ") (4) is assigned. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Gamführungen (3) und die Garnumlenkungen (4) durch rotierbar gelagerte Rollen gebildet sind.Apparatus according to claim 3, characterized in that the game guides (3) and the yarn deflections (4) are formed by rotatably mounted rollers. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Düsen (2, 2', 2") gegenseitig und die Gamführungen (3) von den Düsen (2, 2', 2") je gleich beabstandet sind, wobei der Abstand von den Garnführungen (3) zur jeweils benachbarten Düse (2, 2") geringer ist als der Abstand zwischen den Düsen (2, 2', 2") und vorzugsweise etwa die Hälfte des letzteren beträgt.Device according to one of claims 2 to 4, characterized in that the nozzles (2, 2 ', 2 ") each other and the game guides (3) from the nozzles (2, 2', 2") each are equally spaced, the distance from the yarn guides (3) to the adjacent one Nozzle (2, 2 ") is less than the distance between the nozzles (2, 2 ', 2") and preferably about half of the latter. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Abstand zwischen den Düsen (2, 2', 2") zwischen 30 und 80 mm liegt und vorzugsweise 44 mm beträgt.Apparatus according to claim 5, characterized in that the distance between the nozzles (2, 2 ', 2 ") is between 30 and 80 mm and is preferably 44 mm. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Düsen (2, 2', 2") an ein kammerartiges Luftreservoir (1) angeschlossen sind, welches zwei Druckluftanschlüsse (5) aufweist, welche so angeordnet sind, dass an allen Düsen (2, 2', 2") ein gleichmässiger Luftdurchsatz erfolgt. Device according to one of claims 1 to 6, characterized in that the nozzles (2, 2 ', 2 ") are connected to a chamber-like air reservoir (1) which has two compressed air connections (5), which are arranged so that on all nozzles (2, 2 ', 2 ") there is a uniform air throughput. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Luftzufuhr zu den Düsen (2, 2', 2") durch ein Proportionalventil gesteuert ist, so dass eine Steuerung des Luftdrucks in Funktion zur Fadengeschwindigkeit erfolgt.Apparatus according to claim 7, characterized in that the air supply to the Nozzles (2, 2 ', 2 ") is controlled by a proportional valve, so that control of the Air pressure in function of the thread speed. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass im Einlaufbereich der Vorrichtung (V) eine gesteuerte Fadenbremse angeordnet ist, deren Klemmkraft indirekt proportional zur Fadengeschwindigkeit gesteuert ist.Device according to one of claims 1 to 8, characterized in that in the inlet area the device (V) a controlled thread brake is arranged, the Clamping force is controlled indirectly proportional to the thread speed. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Einlaufbereich der Vorrichtung (V) eine zum Ausgleich von Spannungsschwankungen der Garne (E, F) ausreichende Länge aufweist, oder dass das Stapel garn (F) und das Elastan (E) je von einem Lieferwerk (6 bzw. 7) geliefert werden.Device according to one of claims 1 to 9, characterized in that the inlet area the device (V) one to compensate for voltage fluctuations Yarn (E, F) has sufficient length, or that the pile of yarn (F) and the elastane (E) can be delivered from one supplier (6 or 7).
EP99106310A 1999-03-26 1999-03-26 Apparatus for interlacing at least one staple fibre yarn with an elastane yarn Withdrawn EP1038997A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1081259A1 (en) * 1999-09-01 2001-03-07 Schärer Schweiter Mettler AG Apparatus controlling the air supply to the jet of an air intermingling device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2110461A1 (en) * 1970-10-15 1972-06-02 Teijin Ltd
US3775958A (en) * 1970-06-01 1973-12-04 Celanese Corp Pneumatic false twisting interlacer
US4736578A (en) * 1985-04-23 1988-04-12 E. I. Du Pont De Nemours And Company Method for forming a slub yarn
FR2735501A1 (en) * 1995-06-15 1996-12-20 Payen & Cie L Stretch cladded thick yarn prodn. covered with false twisted elements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775958A (en) * 1970-06-01 1973-12-04 Celanese Corp Pneumatic false twisting interlacer
FR2110461A1 (en) * 1970-10-15 1972-06-02 Teijin Ltd
US4736578A (en) * 1985-04-23 1988-04-12 E. I. Du Pont De Nemours And Company Method for forming a slub yarn
FR2735501A1 (en) * 1995-06-15 1996-12-20 Payen & Cie L Stretch cladded thick yarn prodn. covered with false twisted elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1081259A1 (en) * 1999-09-01 2001-03-07 Schärer Schweiter Mettler AG Apparatus controlling the air supply to the jet of an air intermingling device

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