EP1568807B1 - Roller assembly for a device for manufacturing a self-twist yarn and a method of manufacturing a self-twist yarn - Google Patents

Roller assembly for a device for manufacturing a self-twist yarn and a method of manufacturing a self-twist yarn Download PDF

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Publication number
EP1568807B1
EP1568807B1 EP04029752A EP04029752A EP1568807B1 EP 1568807 B1 EP1568807 B1 EP 1568807B1 EP 04029752 A EP04029752 A EP 04029752A EP 04029752 A EP04029752 A EP 04029752A EP 1568807 B1 EP1568807 B1 EP 1568807B1
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EP
European Patent Office
Prior art keywords
roller
rovings
twisting
guide
self
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EP04029752A
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German (de)
French (fr)
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EP1568807A2 (en
EP1568807A3 (en
Inventor
Markus Beerli
Carlo Xotta
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OC Oerlikon Textile Holding AG
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Saurer Hamel AG
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Priority to PL04029752T priority Critical patent/PL1568807T3/en
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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
    • D02G3/26Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28Doubled, plied, or cabled threads
    • D02G3/286Doubled, plied, or cabled threads with alternatively "S" and "Z" direction of twist, e.g. Self-twist process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/044Manufacture and assembly of cutter blocks

Definitions

  • the invention relates to a roller assembly for a device for producing a self-twisting yarn according to the preamble of claim 1, an apparatus for producing a self-twisting yarn, which comprises such a roller assembly and a method for producing a self-twisting yarn according to the preamble of claim 12.
  • a generic method for producing a self-twisting yarn and an apparatus for performing this method is known from DE 100 32 708 C1 known.
  • first at least two rovings are alternately provided with S and Z turns, which are separated by areas without rotation. These rovings are then brought together on a guide roller so that they automatically rotate together due to their tendency to reverse, the areas without rotation in the twisted self-twisting yarn having a phase difference.
  • This phase difference is adjusted by passing one of the rovings over a diverting pulley and from there onto the idler, whereby this roving has to travel a longer distance compared to the other roving until it joins the other roving.
  • the present invention seeks to provide a method and apparatus for producing a self-twisting yarn, with which a twisted self-twisting yarn is produced, which is characterized by a uniform phase characteristic of the untwisted portions of the rovings along the twisted Edzwirngarns.
  • the invention proposes a roller assembly for a device for producing a self-twisting yarn with the features of claim 1 and a set of roller assemblies according to claim 5. Preferred embodiments of the roller assembly can be found in the dependent claims 2 to 4.
  • each of the rovings is given false rotations, so that each roving has alternating ranges of S and Z turns. Subsequently, these rovings are brought together so that they twine automatically to the self-twisting yarn.
  • the tendency to reverse the misaligned rovings is utilized. It is known that the strength of the twisted self-twisting yarn depends very much on the phase of the areas without rotation of the two rovings. The rovings are therefore usually merged so that their areas are out of phase without rotation. This is illustrated by way of illustration in FIGS. 1 and 2, wherein FIG.
  • FIG. 1 shows the situation in which the two rovings 2, 3 are arranged parallel next to one another, the regions without rotation (0) facing each other or in phase.
  • Figure 2 shows the preferred situation for the production of a self-twisting yarn of high strength, in which the areas without rotation (0) of the two rovings 2, 3 are out of phase.
  • the phase difference between the unrotated portions of the rovings 2, 3 will hereinafter be denoted by ⁇ .
  • Figure 7 shows a perspective view of an apparatus for producing a self-twisting yarn 1 from two rovings 2 and 3.
  • the rovings 2, 3 are first generated in a drafting system, not shown here and then parallel next to each other running guided in a false twisting device 10.
  • the rovings 2, 3 are given periodically alternately regions with S and Z turns, which are separated from each other by regions without rotation (0).
  • the rovings 2, 3 are brought together in a twisting device 11 in such a way that they twist together due to their tendency to reverse and twist together to form the self-twisting yarn 1.
  • the false twisting device 10 is formed as a Nitschel device.
  • This has two substantially cylindrical and axially parallel arranged Nitschelwalzen 12, 13.
  • the Nitschelwalzen 12, 13 rotate on the one hand in opposite directions to each other about their axes of rotation 12a, 13a, which are arranged parallel to each other.
  • the rovings 2, 3 are conveyed through the slips 12, 13.
  • the two Nitschelwalzen 12, 13 oscillate in the axial direction between two limit positions. By this axial oscillation, the rovings 2, 3 carried out are twisted and thus obtain a rotation.
  • the rovings In one direction of oscillation, the rovings receive an S-twist and a Z-twist in the opposite direction of oscillation. Since the Nitschelwalzen 12, 13 resting at the reversal points of their axial movement, receive the rovings 2, 3 at these times no rotation. Therefore, the alternating ranges of S and Z rotations are separated by areas of no rotation (0) and areas of lesser rotation, respectively.
  • the twisting device 11 in which the rovings 2, 3 are subsequently twisted together, comprises a roller arrangement which comprises a first deflection roller 5, a second deflection roller 7 and a guide roller 6.
  • This roller arrangement is shown schematically in Figure 3 and in Figures 4 to 6 in detail.
  • the one roving 3 is located over a portion of the outer circumference of the first guide roller 5 and is deflected by this from the original Garnlaufraum C and guided on the second guide roller 7, wraps around a portion (about 270 °) of the outer periphery of this second guide roller 7 and finally passed to the guide roller 6, where it wraps around a portion (about 225 °) of the outer circumference until it reaches the merge point 22 on the guide surface of the guide roller 6.
  • the other roving 2 is guided directly on the guide roller 6, where it merges with the roving 3 at the merge point 22.
  • the rollers 5, 6 and 7 are each mounted on a base plate 4 in the arrangement shown above.
  • yarn guide 8 and 9 are arranged.
  • the yarn guides 8, 9 serve to guide the roving 2 on the outer circumference of the guide roller 6 and the roving 3 on the outer circumference of the first guide roller 5.
  • the yarn guide 8 is arranged with respect to its associated guide roller 6 so that the roving 2 is deflected such that it rests only point-shaped at the merge point 22 on the outer circumference of the guide roller 6.
  • the yarn guide 9 serves to guide the roving 3 on the outer circumference of the first guide roller 5, wherein the first bearing point of the roving 3 is referred to the guide roller 5 in the following by reference numeral 33.
  • the first guide roller 5 and the guide roller 6 are arranged so that their axes 5A and 6A are parallel to each other and lie in a plane E, which is parallel to the plane which is spanned by the axes of rotation 12a, 13a of the Nitschelwalzen 12, 13.
  • a plane E which is parallel to the plane which is spanned by the axes of rotation 12a, 13a of the Nitschelwalzen 12, 13.
  • this line lies exactly in the plane E, which is spanned by the axes A5 and A6.
  • the points 22 and 33 thus each have the same distance from the Nitschelwalzen 12, 13. Starting from the attachment point 33, the one roving 3 then wraps around a substantial part of the circumference of the second guide roller 7 (at the arrangement shown in Figure 4, the wrap angle is about 270 °).
  • the path difference between the abutment point 33 and the merge point 22 determines the phase difference ⁇ between the unrotated portions of the rovings in the twisted self-twisting yarn. For this reason, the exact observance of the contact points 22 and 33 during the entire process duration of particular importance in terms of uniformity of the self-twisting yarn produced 1.
  • the roller assembly comprises the base plate 4 and an intermediate plate 14. On the base plate 4, the two pulleys 5 and 7 and the guide roller 6 are arranged.
  • the second guide roller 7 is rotatably mounted on a bearing 15 in a receiving plate 16 which is fixed to the base plate 4, stored.
  • the guide rollers 5 and 7 and the guide roller 6 are each cylindrical in shape, wherein in the cylinder jacket in each case a guide groove 5a, 6a and 7a is cut.
  • the guide grooves serve to keep the rovings 2, 3 running over the respective roller on the cylinder jacket surface of the deflection or guide rollers 5, 6, 7 and to prevent them from slipping off.
  • the two yarn guides 8 and 9 are further attached, which are formed in the embodiment described here as a thread guide eyelets. Alternatively, thread guide pins can be used.
  • the guide roller 6 is in this case the yarn guide 8 and the first guide roller 5, the yarn guide 9 is assigned.
  • the yarn guides 8 and 9 are in this case arranged so that they are in the yarn running direction C immediately in front of the guide roller 6 and der Umlenkrolle 5.
  • the base plate 4 is attached via a quick release on the intermediate plate 14.
  • the quick release is formed by two permanent magnets 17, 18 which are inserted in recesses 19, 20 of the intermediate plate.
  • the metallic base plate is held by the magnetic force of the magnets 17, 18 on the intermediate plate 14.
  • other quick fasteners such as B. a bayonet closure, are used.
  • a holder 21 is fastened via screw connections. This holder 21 serves to support the intermediate plate 14 in the apparatus for producing a self-twisting yarn, as shown in FIG.
  • a set of roller assemblies consisting of a plurality of roller assemblies as shown in Figs. 4-6 and 9 is provided ,
  • the individual roller arrangements of this set are identical in construction to the roller arrangements shown in FIGS. 4 to 6 and 9, but differ in the distance D between the axis A7 of the second guide pulley 7 and the plane E which passes through the axes A5 and A6 of the first guide roller 5 and the guide roller 6 is defined.
  • phase difference ⁇ When starting a twisting process for producing a self-twisting yarn from two rovings with predetermined properties, it is therefore possible to set the phase difference ⁇ to a desired value by selecting a suitable roller arrangement, this desired value will generally depend on the properties of the rovings 2, 3 ,
  • the twisted self-twisting yarn (1) is guided over a discharge yarn guide immediately after leaving the guide roller (6). This allows a stable guidance of the twisted self-twisting yarn 1.
  • the outlet yarn guide is here also like the thread guides 8 and 9 designed as a thread guide eye or as a thread guide pin.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Ropes Or Cables (AREA)

Abstract

The assembly to produce a self-acting twisted yarn, from at least two rovings, gives the yarn zones with alternating left and right twists. At least one deflection roller (5) leads one roving (3) from its path to a guide roller (6) to be combined with the other roving (2) and be twisted into a self-acting twisted yarn (1). The roller structure, with the guide roller and deflection roller and a further deflection roller (7) are mounted on a base plate (4) so that the axes of the guide and first deflection roller are parallel on one plane. The axis of the second deflection roller is at a gap from the plane.

Description

Die Erfindung betrifft eine Rollenanordnung für eine Vorrichtung zur Herstellung eines Selbstzwirngarns nach dem Oberbegriff des Anspruchs 1, eine Vorrichtung zur Herstellung eines Selbstzwirngarns, welche eine solche Rollenanordnung umfaßt sowie ein Verfahren zur Herstellung eines Selbstzwirngarns nach dem Oberbegriff des Anspruchs 12.The invention relates to a roller assembly for a device for producing a self-twisting yarn according to the preamble of claim 1, an apparatus for producing a self-twisting yarn, which comprises such a roller assembly and a method for producing a self-twisting yarn according to the preamble of claim 12.

Ein gattungsgemäßes Verfahren zur Herstellung eines Selbstzwirngarns sowie eine Vorrichtung zur Durchführung dieses Verfahrens ist aus der DE 100 32 708 C1 bekannt. Bei dem Verfahren werden zunächst mindestens zwei Vorgarnen abwechselnd Bereiche mit S- und Z-Drehungen erteilt, welche durch Bereiche ohne Drehung voneinander getrennt sind. Diese Vorgarne werden anschließend auf einer Führungsrolle so zusammengeführt, dass sie sich aufgrund ihrer Rückdrehtendenz selbsttätig zusammendrehen, wobei die Bereiche ohne Drehung im zusammengedrehten Selbstzwirngarn eine Phasendifferenz aufweisen. Diese Phasendifferenz wird eingestellt, indem eines der Vorgarne über eine Umlenkrolle und von dort auf die Führungsrolle geführt wird, wodurch dieses Vorgarn verglichen mit dem anderen Vorgarn einen längeren Weg zurückzulegen hat, bis es zur Vereinigung mit dem anderen Vorgarn kommt.A generic method for producing a self-twisting yarn and an apparatus for performing this method is known from DE 100 32 708 C1 known. In the method, first at least two rovings are alternately provided with S and Z turns, which are separated by areas without rotation. These rovings are then brought together on a guide roller so that they automatically rotate together due to their tendency to reverse, the areas without rotation in the twisted self-twisting yarn having a phase difference. This phase difference is adjusted by passing one of the rovings over a diverting pulley and from there onto the idler, whereby this roving has to travel a longer distance compared to the other roving until it joins the other roving.

Bei dem bekannten Verfahren hat sich gezeigt, dass die vorgegebene Phasendifferenz zwischen den Bereichen ohne Drehung im zusammengedrehten Selbstzwirngarn nicht gleichmäßig längs des zusammengedrehten Selbstzwirngarns eingehalten werden kann. Dies führt bei Geweben, welche aus einem solchen Selbstzwirngarn hergestellt sind, zu einem uneinheitlichen Webbild.In the known method it has been found that the predetermined phase difference between the areas without rotation in the twisted Selbstzwirngarn can not be maintained uniformly along the twisted Selbstzwirngarns. This results in fabrics made of such a self-twisting yarn into a nonuniform weave pattern.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zur Herstellung eines Selbstzwirngarns bereitzustellen, mit denen ein zusammengedrehtes Selbstzwirngarn herstellbar ist, welches sich durch einen gleichmäßigen Phasenverlauf der ungedrehten Bereiche der Vorgarne längs des zusammengedrehten Selbstzwirngarns auszeichnet.On this basis, the present invention seeks to provide a method and apparatus for producing a self-twisting yarn, with which a twisted self-twisting yarn is produced, which is characterized by a uniform phase characteristic of the untwisted portions of the rovings along the twisted Selbstzwirngarns.

Gelöst wird diese Aufgabe mit einem Verfahren mit den Merkmalen des Anspruchs 12 sowie mit einer Vorrichtung mit den Merkmalen des Anspruchs 6. Bevorzugte Ausführungsbeispiele der Vorrichtung zur Herstellung eines Selbstzwirngarns sind den Unteransprüchen 7 bis 11 entnehmbar und bevorzugte Ausführungsbeispiele des Verfahrens zur Herstellung eines Selbstzwirngarns sind in den Unteransprüchen 13 und 14 aufgezeigt.This object is achieved with a method having the features of claim 12 and with an apparatus having the features of claim 6. Preferred embodiments of the apparatus for producing a self-twisting yarn are the dependent claims 7 to 11 and preferred embodiments of the method for producing a self-twisting yarn are in the subclaims 13 and 14 shown.

Es besteht weiterhin die Aufgabe, eine Vorrichtung aufzuzeigen, mit der ein Selbstzwirngarn aus mindestens zwei Vorgarnen herstellbar ist, wobei die Phasendifferenz zwischen den ungedrehten Bereichen der Vorgarne auf einfache Art auf einen gewünschten Wert einstellbar und während der Dauer des Zwirnvorgangs auf diesem Wert möglichst gleichbleibend fixierbar ist. Zur Lösung dieser Aufgabe schlägt die Erfindung eine Rollenanordnung für eine Vorrichtung zur Herstellung eines Selbstzwirngarns mit den Merkmalen des Anspruchs 1 sowie einen Satz von Rollenanordnungen nach Anspruch 5 vor. Bevorzugte Ausführungsbeispiele der Rollenanordnung sind den Unteransprüchen 2 bis 4 zu entnehmen.It is a further object to provide a device with which a self-twisting yarn can be produced from at least two rovings, wherein the phase difference between the untwisted areas of the rovings in a simple manner adjustable to a desired value and fixed as constant as possible during the duration of the twisting operation at this value is. To solve this problem, the invention proposes a roller assembly for a device for producing a self-twisting yarn with the features of claim 1 and a set of roller assemblies according to claim 5. Preferred embodiments of the roller assembly can be found in the dependent claims 2 to 4.

Die Erfindung wird nachfolgend unter Bezugnahme auf die begleitenden Zeichnungen anhand eines Ausführungsbeispiels näher erläutert. Die Zeichnungen zeigen:

Figur 1:
Illustrative Darstellung zweier Vorgarne, welche jeweils abwechselnde Bereiche mit S- und Z-Drehungen aufweisen, wobei die beiden Vorgarne so nebeneinander angeordnet sind, dass die Bereiche ohne Drehung in Phase liegen;
Figur 2:
Illustrative Darstellung der beiden Vorgarne von Figur 1, wobei die Vorgarne hier so parallel nebeneinander liegend angeordnet sind, dass ein Versatz zwischen den ungedrehten Bereichen vorliegt;
Figur 3:
Schematische Darstellung einer Rollenanordnung für eine Vorrichtung zur Herstellung eines Selbstzwirngarns, mit der die Zusammenführung von mit Falschdrehungen versehenen Vorgarnen zu einem Selbstzwirngarn erfolgt;
Figur 4:
Perspektivische Darstellung der in Figur 3 schematisch dargestellten Rollenanordnung;
Figur 5:
Weitere perspektivische Darstellung der Rollenanordnung von Figur 4 in geänderter Perspektive und zusammen mit einer Haltevorrichtung zum Einbau dieser Rollenanordnung in eine Vorrichtung zur Herstellung eines Selbstzwirngarns;
Figur 6:
Draufsicht auf die Rollenanordnung mit Haltevorrichtung von Figur 5;
Figur 7:
Perspektivische Darstellung einer Vorrichtung zur Herstellung eines Selbstzwirngarns, welche eine Rollenanordnung nach Figur 5 umfaßt;
Figur 8:
Draufsicht auf die Vorrichtung von Figur 7;
Figur 9:
Explosionsdarstellung der Rollenanordnung mit Haltevorrichtung von Figur 5.
The invention will be explained in more detail below with reference to the accompanying drawings with reference to an embodiment. The drawings show:
FIG. 1:
Illustrative illustration of two rovings, each having alternating areas with S and Z turns, wherein the two rovings are arranged side by side so that the areas are in phase without rotation;
FIG. 2:
Illustrative representation of the two rovings of Figure 1, wherein the rovings are arranged here parallel to each other lying side by side, that there is an offset between the unrotated areas;
FIG. 3:
Schematic representation of a roller assembly for a device for producing a self-twisting yarn, with the merger of false-twisted rovings is made into a self-twisting yarn;
FIG. 4:
Perspective view of the roller assembly shown schematically in Figure 3;
FIG. 5:
Further perspective view of the roller assembly of Figure 4 in a changed perspective and together with a holding device for installation of this roller assembly in an apparatus for producing a self-twisting yarn;
FIG. 6:
Top view of the roller assembly with holding device of Figure 5;
FIG. 7:
Perspective representation of an apparatus for producing a self-twisting yarn, which comprises a roller assembly according to Figure 5;
FIG. 8:
Top view of the device of Figure 7;
FIG. 9:
Exploded view of the roller assembly with holding device of Figure 5.

Bei der Herstellung eines Selbstzwirngarns aus mehreren Vorgarnen werden zunächst jedem der Vorgarne Falschdrehungen erteilt, so dass jedes Vorgarn sich abwechselnde Bereiche mit S- und Z-Drehungen aufweist. Anschließend werden diese Vorgarne so zusammengeführt, dass sie sich selbsttätig zu dem Selbstzwirngarn verzwirnen. Hierbei wird die Rückdrehtendenz der mit Falschdrehungen versehenen Vorgarne ausgenutzt. Es ist bekannt, dass die Festigkeit des zusammengedrehten Selbstzwirngarns ganz wesentlich von der Phasenlage der Bereiche ohne Drehung der beiden Vorgarne abhängt. Die Vorgarne werden deshalb in der Regel so zusammengeführt, dass ihre Bereiche ohne Drehung außer Phase liegen. In den Figuren 1 und 2 ist dies illustrativ gegenübergestellt, wobei die Figur 1 die Situation zeigt, in der die beiden Vorgarne 2, 3 parallel nebeneinander liegend angeordnet sind, wobei die Bereiche ohne Drehung (0) einander gegenüber bzw. in Phase liegen. Demgegenüber zeigt die Figur 2 die für die Herstellung eines Selbstzwirngarns hoher Festigkeit bevorzugte Situation, in der die Bereiche ohne Drehung (0) der beiden Vorgarne 2, 3 außer Phase liegen. Die Phasendifferenz zwischen den ungedrehten Bereichen der Vorgarne 2, 3 wird im Folgenden mit ϕ bezeichnet.In producing a self-twisting yarn from a plurality of rovings, first, each of the rovings is given false rotations, so that each roving has alternating ranges of S and Z turns. Subsequently, these rovings are brought together so that they twine automatically to the self-twisting yarn. Here, the tendency to reverse the misaligned rovings is utilized. It is known that the strength of the twisted self-twisting yarn depends very much on the phase of the areas without rotation of the two rovings. The rovings are therefore usually merged so that their areas are out of phase without rotation. This is illustrated by way of illustration in FIGS. 1 and 2, wherein FIG. 1 shows the situation in which the two rovings 2, 3 are arranged parallel next to one another, the regions without rotation (0) facing each other or in phase. In contrast, Figure 2 shows the preferred situation for the production of a self-twisting yarn of high strength, in which the areas without rotation (0) of the two rovings 2, 3 are out of phase. The phase difference between the unrotated portions of the rovings 2, 3 will hereinafter be denoted by φ.

Figur 7 zeigt in perspektivischer Darstellung eine Vorrichtung zur Herstellung eines Selbstzwirngarns 1 aus zwei Vorgarnen 2 und 3. Die Vorgarne 2, 3 werden zunächst in einem hier nicht dargestellten Streckwerk erzeugt und anschließend parallel nebeneinander verlaufend in eine Falschdreheinrichtung 10 geführt. In der Falschdreheinrichtung 10 werden den Vorgarnen 2, 3 periodisch abwechselnd Bereiche mit S- und Z-Drehungen erteilt, welche durch Bereiche ohne Drehung (0) voneinander getrennt sind. Nach Durchlaufen der Falschdreheinrichtung 10 werden die Vorgarne 2, 3 in einer Zwirnvorrichtung 11 so zusammengeführt, dass sie sich aufgrund ihrer Rückdrehtendenz miteinander verzwirnen und sich zu dem Selbstzwirngarn 1 zusammendrehen.Figure 7 shows a perspective view of an apparatus for producing a self-twisting yarn 1 from two rovings 2 and 3. The rovings 2, 3 are first generated in a drafting system, not shown here and then parallel next to each other running guided in a false twisting device 10. In the false twisting device 10, the rovings 2, 3 are given periodically alternately regions with S and Z turns, which are separated from each other by regions without rotation (0). After passing through the false twisting device 10, the rovings 2, 3 are brought together in a twisting device 11 in such a way that they twist together due to their tendency to reverse and twist together to form the self-twisting yarn 1.

Bei dem in Figur 7 gezeigten Ausführungsbeispiel ist die Falschdreheinrichtung 10 als Nitschel-Vorrichtung ausgebildet. Diese weist zwei im wesentlichen zylindrische und achsenparallel angeordnete Nitschelwalzen 12, 13 auf. Die Nitschelwalzen 12, 13 rotieren dabei einerseits gegensinnig zueinander um ihre Drehachsen 12a, 13a, welche parallel zueinander angeordnet sind. Durch die Rotationsbewegung werden die Vorgarne 2, 3 durch die Nitschelwalzen 12, 13 gefördert. Zusätzlich zu ihrer Rotation oszillieren die beiden Nitschelwalzen 12, 13 in axialer Richtung zwischen zwei Grenzstellungen. Durch diese axiale Oszillation werden die durchgeführten Vorgarne 2, 3 verdrillt und erhalten somit eine Drehung. In einer Oszillationsrichtung erhalten die Vorgarne eine S-Drehung und in der entgegengesetzten Osziallationsrichtung eine Z-Drehung. Da die Nitschelwalzen 12, 13 an den Umkehrpunkten ihrer axialen Bewegung stillstehen, erhalten die Vorgarne 2, 3 zu diesen Zeitpunkten keine Drehung. Daher sind die sich abwechselnden Bereiche mit S- und Z-Drehungen durch Bereiche ohne Drehung (0) bzw. durch Bereiche mit geringerer Drehung getrennt.In the embodiment shown in Figure 7, the false twisting device 10 is formed as a Nitschel device. This has two substantially cylindrical and axially parallel arranged Nitschelwalzen 12, 13. The Nitschelwalzen 12, 13 rotate on the one hand in opposite directions to each other about their axes of rotation 12a, 13a, which are arranged parallel to each other. As a result of the rotational movement, the rovings 2, 3 are conveyed through the slips 12, 13. In addition to their rotation, the two Nitschelwalzen 12, 13 oscillate in the axial direction between two limit positions. By this axial oscillation, the rovings 2, 3 carried out are twisted and thus obtain a rotation. In one direction of oscillation, the rovings receive an S-twist and a Z-twist in the opposite direction of oscillation. Since the Nitschelwalzen 12, 13 resting at the reversal points of their axial movement, receive the rovings 2, 3 at these times no rotation. Therefore, the alternating ranges of S and Z rotations are separated by areas of no rotation (0) and areas of lesser rotation, respectively.

Alternativ zu einer Falschdreheinrichtung mit Nitschelwalzen können auch andere Falschdreheinrichtungen eingesetzt werden, wie z. B. solche des Klemmtyps oder Falschdreheinrichtungen, welche den Vorgarnen durch Luftverwirbelung eine Drehung erteilen.As an alternative to a false twisting device with Nitschelwalzen other false twisting can be used, such. B. those of the clamping type or false twisting, which give the rovings by Luftverwirbelung a rotation.

Die Zwirnvorrichtung 11, in der die Vorgarne 2, 3 anschließend miteinander verzwirnt werden, umfasst eine Rollenanordnung, welche eine erste Umlenkrolle 5, eine zweite Umlenkrolle 7 und eine Führungsrolle 6 umfasst. Diese Rollenanordnung ist in Figur 3 schematisch und in den Figuren 4 bis 6 im Einzelnen dargestellt.The twisting device 11, in which the rovings 2, 3 are subsequently twisted together, comprises a roller arrangement which comprises a first deflection roller 5, a second deflection roller 7 and a guide roller 6. This roller arrangement is shown schematically in Figure 3 and in Figures 4 to 6 in detail.

Aus Figur 3 ist ersichtlich, dass die Achsen A5 bzw. A6 der ersten Umlenkrolle 5 und der Führungsrolle 6 parallel zueinander verlaufen und eine Ebene E definieren. Die Achse A7 der zweiten Umlenkrolle 7 ist in einem Abstand D zu dieser Ebene E angeordnet, und zwar in Garnlaufrichtung C hinter dieser Ebene E und in der Projektion auf die Ebene E in etwa mittig zwischen den Achsen A5 und A6. Das eine Vorgarn 3 liegt über einen Teilbereich am Außenumfang der ersten Umlenkrolle 5 an und wird von dieser aus der ursprünglichen Garnlaufrichtung C umgelenkt und auf die zweite Umlenkrolle 7 geführt, umschlingt einen Teilbereich (ca. 270°) des Außenumfangs dieser zweiten Umlenkrolle 7 und wird schließlich auf die Umlenkrolle 6 geleitet, wo sie einen Teilbereich (ca. 225°) des Außenumfangs umschlingt bis es zum Zusammenführungspunkt 22 auf der Führungsfläche der Führungsrolle 6 gelangt. Das andere Vorgarn 2 wird direkt auf die Führungsrolle 6 geführt, wo es sich am Zusammenführungspunkt 22 mit dem Vorgarn 3 vereinigt.From Figure 3 it can be seen that the axes A5 and A6 of the first guide roller 5 and the guide roller 6 parallel to each other and define a plane E. The axis A7 of second guide roller 7 is arranged at a distance D to this plane E, in the yarn running direction C behind this plane E and in the projection on the plane E approximately centrally between the axes A5 and A6. The one roving 3 is located over a portion of the outer circumference of the first guide roller 5 and is deflected by this from the original Garnlaufrichtung C and guided on the second guide roller 7, wraps around a portion (about 270 °) of the outer periphery of this second guide roller 7 and finally passed to the guide roller 6, where it wraps around a portion (about 225 °) of the outer circumference until it reaches the merge point 22 on the guide surface of the guide roller 6. The other roving 2 is guided directly on the guide roller 6, where it merges with the roving 3 at the merge point 22.

Aus Figur 4 ist der Aufbau der Rollenanordnung ersichtlich. Die Rollen 5, 6 und 7 sind jeweils in der oben dargestellten Anordnung auf einer Grundplatte 4 befestigt. In Garnlaufrichtung vor der ersten Umlenkrolle 5 und vor der Führungsrolle 6 sind jeweils Fadenführer 8 und 9 angeordnet. Die Fadenführer 8, 9 dienen dazu, das Vorgarn 2 auf den Außenumfang der Führungsrolle 6 bzw. das Vorgarn 3 auf den Außenumfang der ersten Umlenkrolle 5 zu lenken. Bevorzugt ist der Fadenführer 8 bezüglich der ihm zugeordneten Führungsrolle 6 so angeordnet, dass das Vorgarn 2 derart umgelenkt wird, dass es nur punktförmig am Zusammenführungspunkt 22 am Außenumfang der Führungsrolle 6 anliegt. Der Fadenführer 9 dient dazu das Vorgarn 3 auf den Außenumfang der ersten Umlenkrolle 5 zu führen, wobei der erste Anlagepunkt des Vorgarns 3 an der Umlenkrolle 5 im folgenden mit Bezugsziffer 33 bezeichnet wird.From Figure 4, the structure of the roller assembly can be seen. The rollers 5, 6 and 7 are each mounted on a base plate 4 in the arrangement shown above. In Garnlaufrichtung before the first guide roller 5 and before the guide roller 6 yarn guide 8 and 9 are arranged. The yarn guides 8, 9 serve to guide the roving 2 on the outer circumference of the guide roller 6 and the roving 3 on the outer circumference of the first guide roller 5. Preferably, the yarn guide 8 is arranged with respect to its associated guide roller 6 so that the roving 2 is deflected such that it rests only point-shaped at the merge point 22 on the outer circumference of the guide roller 6. The yarn guide 9 serves to guide the roving 3 on the outer circumference of the first guide roller 5, wherein the first bearing point of the roving 3 is referred to the guide roller 5 in the following by reference numeral 33.

Um den Ort 22 der Zusammenführung der Vorgarne 2, 3 auf der Führungsfläche der Führungsrolle 6 exakt zu definieren und während des gesamten Verfahrensverlaufs einhalten zu können sind die erste Umlenkrolle 5 und die Führungsrolle 6 so angeordnet, dass ihre Achsen 5A und 6A parallel zueinander verlaufen und in einer Ebene E liegen, welche parallel zu der Ebene verläuft, welche durch die Rotationsachsen 12a, 13a der Nitschelwalzen 12, 13 aufgespannt wird. Auf diese Weise wird gewährleistet, dass der Zusammenführungspunkt 22 und der Anlagepunkt 33 auf einer Linie liegen, welche parallel zu den Rotationsachsen der Nitschelwalzen 12, 13 verläuft. Bevorzugt liegt diese Linie genau in der Ebene E, welche durch die Achsen A5 und A6 aufgespannt wird. Die Punkte 22 und 33 haben damit jeweils gleichen Abstand zu den Nitschelwalzen 12, 13. Ausgehend vom Anlagepunkt 33 umschlingt das eine Vorgarn 3 dann einen wesentlichen Teil des Umfangs der zweiten Umlenkrolle 7 (bei der in Figur 4 dargestellten Anordnung beträgt der Umschlingungswinkel ca. 270°). Die Wegdifferenz zwischen dem Anlagepunkt 33 und dem Zusammenführungspunkt 22 bestimmt die Phasendifferenz ϕ zwischen den ungedrehten Bereichen der Vorgarne im zusammengedrehten Selbstzwirngarn. Aus diesem Grunde ist die exakte Einhaltung der Anlagepunkte 22 bzw. 33 während der gesamten Verfahrensdauer von besonderer Bedeutung hinsichtlich der Gleichmäßigkeit des hergestellten Selbstzwirngarns 1. Neben der exakten Ausrichtung der Umlenkrolle 5 und der Führungsrolle 6 mit ihren Achsen 5A und 6A in der Ebene E tragen hierzu auch die Fadenführer 8 und 9 bei, welche die Vorgarne 2, 3 zu ihrem jeweiligen Anlagepunkt 22 bzw. 33 auf der Führungsrolle 6 bzw. der Umlenkrolle 5 leiten.In order to accurately define the location 22 of the merging of the rovings 2, 3 on the guide surface of the guide roller 6 and to be able to comply throughout the process, the first guide roller 5 and the guide roller 6 are arranged so that their axes 5A and 6A are parallel to each other and lie in a plane E, which is parallel to the plane which is spanned by the axes of rotation 12a, 13a of the Nitschelwalzen 12, 13. In this way, it is ensured that the converging point 22 and the contact point 33 lie on a line which runs parallel to the axes of rotation of the Nitschelwalzen 12, 13. Preferably, this line lies exactly in the plane E, which is spanned by the axes A5 and A6. The points 22 and 33 thus each have the same distance from the Nitschelwalzen 12, 13. Starting from the attachment point 33, the one roving 3 then wraps around a substantial part of the circumference of the second guide roller 7 (at the arrangement shown in Figure 4, the wrap angle is about 270 °). The path difference between the abutment point 33 and the merge point 22 determines the phase difference φ between the unrotated portions of the rovings in the twisted self-twisting yarn. For this reason, the exact observance of the contact points 22 and 33 during the entire process duration of particular importance in terms of uniformity of the self-twisting yarn produced 1. In addition to the exact alignment of the guide roller 5 and the guide roller 6 with their axes 5A and 6A in the plane E wear For this purpose, the yarn guides 8 and 9, which lead the rovings 2, 3 to their respective contact point 22 and 33 on the guide roller 6 and der Umlenkrolle 5.

Die Komponenten der Rollenanordnung und ihr Aufbau ist insbesondere der Explosionsdarstellung der Figur 9 zu entnehmen. Die Rollenanordnung umfasst die Grundplatte 4 und eine Zwischenplatte 14. Auf der Grundplatte 4 sind die beiden Umlenkrollen 5 und 7 sowie die Führungsrolle 6 angeordnet. Die zweite Umlenkrolle 7 ist dabei über ein Lager 15 drehbar in einem Aufnahmeteller 16, der auf der Grundplatte 4 befestigt ist, gelagert. Die Umlenkrollen 5 und 7 sowie die Führungsrolle 6 sind jeweils zylinderförmig ausgebildet, wobei im Zylindermantel jeweils eine Führungsrille 5a, 6a bzw. 7a eingeschnitten ist. Die Führungsrillen dienen dazu, die über die jeweilige Rolle laufenden Vorgarne 2, 3 auf der Zylindermantelfläche der Umlenk- bzw. Führungsrollen 5, 6, 7 zu halten und ein Abrutschen zu verhindern. Auf der Grundplatte 4 sind weiterhin die beiden Fadenführer 8 und 9 befestigt, welche in dem hier beschriebenen Ausführungsbeispiel als Fadenführerösen ausgebildet sind. Alternativ hierzu können auch Fadenführerstifte eingesetzt werden. Der Führungsrolle 6 ist hierbei der Fadenführer 8 und der ersten Umlenkrolle 5 ist der Fadenführer 9 zugeordnet. Die Fadenführer 8 und 9 sind hierbei so angeordnet, dass sie in Garnlaufrichtung C unmittelbar vor der Führungsrolle 6 bzw. der Umlenkrolle 5 liegen.The components of the roller assembly and their structure can be seen in particular the exploded view of Figure 9. The roller assembly comprises the base plate 4 and an intermediate plate 14. On the base plate 4, the two pulleys 5 and 7 and the guide roller 6 are arranged. The second guide roller 7 is rotatably mounted on a bearing 15 in a receiving plate 16 which is fixed to the base plate 4, stored. The guide rollers 5 and 7 and the guide roller 6 are each cylindrical in shape, wherein in the cylinder jacket in each case a guide groove 5a, 6a and 7a is cut. The guide grooves serve to keep the rovings 2, 3 running over the respective roller on the cylinder jacket surface of the deflection or guide rollers 5, 6, 7 and to prevent them from slipping off. On the base plate 4, the two yarn guides 8 and 9 are further attached, which are formed in the embodiment described here as a thread guide eyelets. Alternatively, thread guide pins can be used. The guide roller 6 is in this case the yarn guide 8 and the first guide roller 5, the yarn guide 9 is assigned. The yarn guides 8 and 9 are in this case arranged so that they are in the yarn running direction C immediately in front of the guide roller 6 and der Umlenkrolle 5.

Die Grundplatte 4 ist über einen Schnellverschluss an der Zwischenplatte 14 befestigt. Bei dem Ausführungsbeispiel der Figur 9 ist der Schnellverschluss durch zwei Permanentmagnete 17, 18 gebildet, welche in Ausnehmungen 19, 20 der Zwischenplatte eingelegt sind. Die metallische Grundplatte wird hierbei durch die Magnetkraft der Magnete 17, 18 auf der Zwischenplatte 14 gehalten. Alternativ zu diesem Magnet-Schnellverschluss können auch andere Schnellverschlüsse, wie z. B. ein Bajonett-Verschluss, zur Anwendung kommen.The base plate 4 is attached via a quick release on the intermediate plate 14. In the embodiment of Figure 9, the quick release is formed by two permanent magnets 17, 18 which are inserted in recesses 19, 20 of the intermediate plate. The metallic base plate is held by the magnetic force of the magnets 17, 18 on the intermediate plate 14. As an alternative to this magnetic quick release, other quick fasteners, such. B. a bayonet closure, are used.

An der Unterseite der Zwischenplatte 14 ist über Schraubverbindungen ein Halter 21 befestigt. Dieser Halter 21 dient zur Halterung der Zwischenplatte 14 in der Vorrichtung zur Herstellung eines Selbstzwirngarns, wie in der Figur 7 dargestellt.At the bottom of the intermediate plate 14, a holder 21 is fastened via screw connections. This holder 21 serves to support the intermediate plate 14 in the apparatus for producing a self-twisting yarn, as shown in FIG.

Um eine Einstellung einer gewünschten Phasendifferenz ϕ zwischen den ungedrehten Bereichen der Vorgarne 2, 3 im zusammengedrehten Selbstzwirngarn 1 zu ermöglichen, wird ein Satz von Rollenanordnungen bereitgestellt, der aus einer Mehrzahl von Rollenanordnungen besteht, wie sie in den Figuren 4 bis 6 und 9 dargestellt sind. Die einzelnen Rollenanordnungen dieses Satzes sind in ihrem Aufbau jeweils identisch zu den in den Figuren 4 bis 6 und 9 gezeigten Rollenanordnungen, sie unterscheiden sich jedoch in dem Abstand D zwischen der Achse A7 der zweiten Umlenkrolle 7 und der Ebene E, welche durch die Achsen A5 und A6 der ersten Umlenkrolle 5 und der Führungsrolle 6 definiert ist. Mittels des Schnellverschlusses ist es möglich, eine Rollenanordnung gegen eine andere Rollenanordnung auf einfache und schnelle Weise auszutauschen. Bei Start eines Zwirnprozesses zur Herstellung eines Selbstzwirngarns aus zwei Vorgarnen mit vorgegebenen Eigenschaften ist es deshalb möglich, durch Wahl einer geeigneten Rollenanordnung die Phasendifferenz ϕ auf einen gewünschten Wert einzustellen, wobei dieser gewünschte Wert in der Regel von den Eigenschaften der Vorgarne 2, 3 abhängen wird.In order to enable adjustment of a desired phase difference φ between the unrotated portions of the rovings 2, 3 in the twisted self-twisting yarn 1, a set of roller assemblies consisting of a plurality of roller assemblies as shown in Figs. 4-6 and 9 is provided , The individual roller arrangements of this set are identical in construction to the roller arrangements shown in FIGS. 4 to 6 and 9, but differ in the distance D between the axis A7 of the second guide pulley 7 and the plane E which passes through the axes A5 and A6 of the first guide roller 5 and the guide roller 6 is defined. By means of the quick release, it is possible to replace a roller assembly against another roller assembly in a simple and fast way. When starting a twisting process for producing a self-twisting yarn from two rovings with predetermined properties, it is therefore possible to set the phase difference φ to a desired value by selecting a suitable roller arrangement, this desired value will generally depend on the properties of the rovings 2, 3 ,

In einem hier nicht zeichnerisch dargestellten Ausführungsbeispiel ist vorgesehen, dass das zusammengedrehte Selbstzwirngarn (1) unmittelbar nach Verlassen der Führungsrolle (6) über einen Auslauffadenführer geführt wird. Dadurch wird eine stabile Führung des zusammengedrehten Selbstzwirngarns 1 ermöglicht. Der Auslauffadenführer ist hierbei ebenfalls wie die Fadenführer 8 und 9 als Fadenführeröse oder als Fadenführerstift ausgebildet.In an embodiment not shown here in the drawing, it is provided that the twisted self-twisting yarn (1) is guided over a discharge yarn guide immediately after leaving the guide roller (6). This allows a stable guidance of the twisted self-twisting yarn 1. The outlet yarn guide is here also like the thread guides 8 and 9 designed as a thread guide eye or as a thread guide pin.

Mit der beschriebenen Rollenanordnung wird ermöglicht, dass der längere Weg, den das eine Vorgarn 3 gegenüber dem anderen Vorgarn 2 zwischen der Falschdreheinrichtung 10 und dem Vereinigungspunkt 22 auf der Führungsrolle 6 zurückzulegen hat, einerseits eindeutig definiert ist und andererseits auch während der gesamten Verfahrensdauer beibehalten werden kann. Auf diese Weise wird erreicht, dass die Phasendifferenz ϕ zwischen den ungedrehten Bereichen 0 längs des zusammengedrehten Selbstzwirngarns 1 konstant bleibt, was zu einem qualitativ höherwertigen Endprodukt führt. Mit dem bereitgestellten Satz von Rollenanordnungen ist es darüber hinaus möglich, die gewünschte Phasendifferenz ϕ der jeweils verwendeten Sorte der Vorgarne anzupassen, indem vor Beginn des Selbstzwirnvorgangs eine Rollenanordnung mit passendendem Abstand D zwischen der zweiten Umlenkrolle 7 und der Ebene E ausgewählt und in die Verzwirneinrichtung 11 eingesetzt wird.With the described roller arrangement it is made possible that the longer path which one roving 3 has to travel on the guide roller 6 in relation to the other roving 2 between the false twisting device 10 and the junction point 22 is unambiguously defined on the one hand and maintained during the entire process duration, on the other hand can. In this way it is achieved that the phase difference φ between the unrotated regions O remains constant along the twisted self-twisting yarn 1, resulting in a higher-quality end product. With the provided set of Roller arrangements, it is also possible to adjust the desired phase difference φ of the particular type of roving used by a roller assembly is selected with appropriate distance D between the second guide roller 7 and the plane E and inserted into the twisting device 11 before the start of the self-twisting operation.

Claims (14)

  1. Roller arrangement for a device for manufacturing a self-twist yarn (1) from at least two rovings (2, 3) which alternately exhibit areas with S and Z twisting, with at least one deflection roller (5) and a guide roller (6), the deflection roller (5) serving to deflect at least one of the rovings (3) out of the original yarn running direction (C) and guide it on to the guide roller (6) on which combination with at least one other roving (2) takes place so that they twist together automatically to form a self-twist yarn (1), characterised in that the roller arrangement comprises the guide roller (6) and a first deflection roller (5) and a second deflection roller (7) which are arranged on a base plate (4) so that the axes (A5, A6) of the first deflection roller (5) and the guide roller (6) lie parallel to one another in one plane (E) and the axis (A7) of the second deflection roller (7) is arranged a distance (D) from this plane (E).
  2. Roller arrangement according to claim 1, characterised in that the guide roller (6) and the deflection rollers (5, 7) are mounted rotatably on the base plate (4).
  3. Roller arrangement according to claim 1 or 2, characterised in that a quick-change fastening is provided on the base plate (4) with which the roller arrangement can be fastened interchangeably in a device for manufacturing a self-twist yarn (1).
  4. Roller arrangement according to one of claims 1 to 3, characterised in that a thread guide (8) is arranged on the base plate (4) near and before and/or after the guide roller (6) in the yarn running direction.
  5. Set of roller arrangements consisting of a plurality of roller arrangements according to one of the preceding claims, characterised in that the distance (D) between the axis (A7) of the second deflection roller (7) and the plane (E) in each of the roller arrangements is different.
  6. Device for manufacturing a self-twist yarn (1) from at least two rovings (2, 3), with at least one false twisting device (10) in which the rovings (2, 3) can alternately be given areas with S and Z twisting which are separated from one another by areas without any twisting (0), and a twisting device (11) for twisting the rovings (2, 3) together, characterised in that the twisting device (11) comprises a roller arrangement according to one of claims 1 to 4.
  7. Device according to claim 6, characterised in that the roller arrangement is arranged in the device so that the plane (E) in which the axes (A5, A6) of the first deflection roller (5) and the guide roller (6) lie stands perpendicular to the original running direction (C) of the rovings (2, 3) and the axis (A7) of the second deflection roller (7) is arranged a distance (D) from this plane (E) and behind this plane (E) in the yarn running direction.
  8. Device according to claim 6 or 7, characterised in that the second deflection roller (7) can be moved in relation to the first deflection roller (5) and fixed in desired positions in order to be able to set a desired phase difference (φ) between the areas of the rovings (2, 3) without twisting (0) in the self-twist yarn (1) after twisting together.
  9. Device according to claim 4, characterised in that the roller arrangement is fastened in the device by means of a quick-change fastening.
  10. Device according to one of claims 6 to 9, characterised in that a thread guide (8) is arranged before and/or after the guide roller (6) in the yarn running direction.
  11. Device according to claim 10, characterised in that the thread guide is a thread guide eye.
  12. Method for manufacturing a self-twist yarn (1) in which firstly at least two rovings (2, 3) are guided through between at least one false twisting device (10), through which the rovings (2, 3) are each periodically given alternating areas with S and Z twisting which are separated from one another by areas without twisting (0), and the rovings (2, 3) are then combined together so that they twist together automatically due to their own twisting, and at least one of the rovings (3) after guidance through the false twisting device (10) is guided by means of at least one deflection roller (5) onto a guide roller (6) on which combination of the rovings (2, 3) takes place, characterised in that one of the rovings (3) after guidance through the false twisting device (10) is initially guided by means of a first deflection roller (5) and then by means of a second deflection roller (7), the deflection rollers (5, 7) being arranged so that their axes (A5, A7) run parallel to one another and the axes of the first deflection roller (5) and the guide roller (6) lie in a plane (E) which stands perpendicular to the original yarn running direction (C) and the axis (A7) of the second deflection roller (7) is arranged a distance from this plane (E) and behind this plane (E) in the yarn running direction.
  13. Method according to claim 12, characterised in that the rovings (2, 3) are each guided by means of a thread guide (8, 9) which deflects them on to the external circumference of the guide roller (6) or the first deflection roller (5).
  14. Method according to claim 12 or 13, characterised in that immediately after leaving the guide roller (6) the self-twist yarn (1) after twisting together is guided by means of an outlet thread guide.
EP04029752A 2004-01-17 2004-12-16 Roller assembly for a device for manufacturing a self-twist yarn and a method of manufacturing a self-twist yarn Not-in-force EP1568807B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04029752T PL1568807T3 (en) 2004-01-17 2004-12-16 Roller assembly for a device for manufacturing a self-twist yarn and a method of manufacturing a self-twist yarn

Applications Claiming Priority (2)

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DE102004002502A DE102004002502B3 (en) 2004-01-17 2004-01-17 Twister to give a self-acting twisted yarn, from at least two rovings, has a roller assembly on a base plate with two deflection rollers for a roving leading it from its path to a guide roller with the other roving
DE102004002502 2004-01-17

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EP1568807A2 EP1568807A2 (en) 2005-08-31
EP1568807A3 EP1568807A3 (en) 2006-05-03
EP1568807B1 true EP1568807B1 (en) 2007-07-25

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KR (1) KR20050075698A (en)
CN (1) CN1641084B (en)
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CN103938320B (en) * 2014-04-14 2016-08-17 上海八达纺织印染服装有限公司 A kind of processing method of polyester-cotton blend self-twisted yarn line

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PL1568807T3 (en) 2007-12-31
DE102004002502B3 (en) 2005-02-10
EP1568807A2 (en) 2005-08-31
ES2286555T3 (en) 2007-12-01
DE502004004430D1 (en) 2007-09-06
CN1641084B (en) 2010-05-26
ATE368140T1 (en) 2007-08-15
EP1568807A3 (en) 2006-05-03
KR20050075698A (en) 2005-07-21
CN1641084A (en) 2005-07-20

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