EP0165398B1 - Method and device for manufacturing a yarn with a friction spinning device - Google Patents

Method and device for manufacturing a yarn with a friction spinning device Download PDF

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Publication number
EP0165398B1
EP0165398B1 EP85104480A EP85104480A EP0165398B1 EP 0165398 B1 EP0165398 B1 EP 0165398B1 EP 85104480 A EP85104480 A EP 85104480A EP 85104480 A EP85104480 A EP 85104480A EP 0165398 B1 EP0165398 B1 EP 0165398B1
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EP
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Prior art keywords
friction spinning
fibres
fibers
yarn
spinning means
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EP85104480A
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German (de)
French (fr)
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EP0165398A1 (en
Inventor
Herbert Stalder
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Priority to AT85104480T priority Critical patent/ATE32109T1/en
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    • 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

Definitions

  • the invention relates to a method and a device for producing a yarn or the like, by means of friction spinning means, as described in the preamble of the first method and in the preamble of the first device claim.
  • Friction spinning is a spinning process in which fibers are released from a fiber structure, released onto a perforated, moving surface and twisted together on it.
  • the perforated surface is interspersed with a suction air flow in a predetermined area, so that the fibers discharged onto the surface in this area are captured by the air flow, brought to the surface and transported there up to the end of this area, viewed in the direction of movement of the surface and then screwed in.
  • the screwing in takes place by the flow portion which is directed in this end region of the flow, the direction of movement of the surface, which thereby detects the fibers lying on the surface and continuously screwing them in.
  • a method and a device are known from German Offenlegungsschrift 1 902 111, by means of which a yarn mentioned at the outset is produced.
  • fibers are released from a toothed roller from a fiber structure and transferred to an air stream surrounding this roller, within which the fibers rotate from a position in the circumferential direction to a position essentially parallel to the axis of rotation of the roller.
  • these fibers After these fibers have reached the said position parallel to the axis of rotation, they are transferred to a suction drum, on the surface of which they in turn are conveyed in a position essentially parallel to the axis of rotation of this suction drum up to the previously mentioned limit region of such a suction air flow and, as described earlier, together rotated and drawn off as a finished yarn by appropriate means.
  • the twisting of the fibers into the yarn is supported by another roller lying parallel to the suction drum and almost touching the suction drum. Accordingly, the directions of movement of the latter two rollers are opposite at the narrowest point, i. H. the directions of rotation of the two rollers are the same.
  • a major disadvantage of this method is that the fibers should undergo a change in direction by means of the air flow on the circumference of the toothed roller, which happens only with insufficient uniformity. This gives the fibers on the subsequent suction drum an uneven position and thus an uneven density, which leads to undesirable unevenness in the yarn, especially when fibers with relatively short staple lengths are processed, as is done, for example, in the area of cotton spinning.
  • This device consists in the fact that the fibers have to be braked practically to zero when they hit the gusset gap due to the high transport speed in the air flow, which can lead to compression of these fibers and thus to an undrawn position of the fibers in the yarn.
  • FIG. 1 and 2 show a drafting system 1, with a pair of input rollers 2, a middle pair of rollers 3 and an output pair of rollers 4.
  • the middle pair of rollers is provided with a pair of straps 5 in a manner known per se.
  • the drafting system processes a fiber band 6 or the like and delivers a correspondingly stretched fiber structure 7 to a first friction spinning drum 8.
  • This first friction spinning drum 8 is perforated (not shown) and contains a suction channel 9 which, by means of its walls 9.1 and 9.2, delimits a suction zone on the circumference of the friction spinning drum 8.
  • the walls 9.1 and 9.2 reach the cylindrical inner wall of the friction spinning drum 8.
  • the fibers of the fiber structure 7 are held within the suction zone on the corresponding surface part of the rotating friction spinning drum and ultimately twisted in the limit region of the suction zone given by the wall 9.2 of the suction channel 9 to form a yarn 10.
  • the friction spinning drum 8 rotates in a direction indicated by the arrow U.
  • the first friction spinning drum 8 is assigned a second friction spinning drum 11, which is arranged so close to the first friction spinning drum 8 that the yarn formed in the intermeshing gap of both friction spinning drums is turned into a firmer yarn than without this second drum 11.
  • the direction of movement R of the second friction spinning drum 11 is opposite to the narrowest point of the direction of movement U of the first friction spinning drum 8.
  • a pair of draw-off rollers 12 is provided in a manner known per se in addition to the friction spinning drum, as seen in the axial direction of the friction spinning drum.
  • the yarn 10 is then wound up (not shown).
  • an additional pressure roller 13 (indicated in FIG. 1 and with dash-dotted lines) can be provided.
  • This roller 13 can either be driven at the same peripheral speed as the first friction spinning drum 8 or can be provided as a so-called towed roller.
  • Fig. 2 it is indicated by dash-dotted lines that the pair of draw rollers 12 can also be arranged at the opposite end of the friction spinning drums, i. H. that in such a case the yarn 10 formed is drawn off in the corresponding opposite direction.
  • the sliver 6 is delivered from a spinning can (not shown) and drawn in the drafting device 1 to form a parallelized fiber structure 7.
  • peripheral speed of the friction spinning drums 8 and 11 is a multiple, e.g. B. corresponds to two to twenty times the speed of the fiber structure 7, there is a strong distortion between the pair of output rollers 4 and the first friction spinning drum 8, which on the one hand causes additional stretching of the fibers and on the other hand a strong thinning of the fiber accumulations on this friction spinning drum 8.
  • drawing off the twisted yarn 10 by means of the draw-off rollers 12 in the yarn creates a stretch compressing the yarn, the tension required for the stretching being generated by the friction between the yarn and the friction spinning drums.
  • the friction between the first friction spinning drum 8 and the fibers captured by this drum is increased, so that the slippage between these fibers and the moving friction spinning drum surface is reduced and the removal of the fibers from the fiber assembly 7 is improved.
  • the reduced drafting system is designated 1.1.
  • the pressure roller 13 is permanently assigned.
  • the other elements correspond to those of FIGS. 1 and 2 and are provided with the same reference numerals accordingly.
  • the further device according to the invention shown with FIG. 5 has a disintegration unit 100, which the fibers onto the friction spinning drum 8 or. 11 feeds.
  • the opening unit 100 comprises a feed trough 101, a feed roller 102 and a opening roller 103.
  • the feeding roller 102 and the opening roller 103 are rotatably mounted in a housing 104 and can be driven.
  • the feed roller 102 is provided with longitudinal corrugations (not shown).
  • the opening roller 103 To dissolve the sliver 105 by the opening roller 103, the latter is provided with needles 106 or teeth (not shown) in a manner known per se.
  • FIG. 6 shows a schematic and partial view of a plan
  • FIG. 7 shows a schematic side view of the device from FIG. 5.
  • the housing 1-04 and the feed roller 102 are omitted for the sake of clarity .
  • FIG. 7 further shows a suction channel 107 located in the first friction spinning drum 8 with the side walls 108 and 109 which extend to the inner cylindrical wall of the first friction spinning drum. As described earlier, the walls 108 and 109 delimit the suction zone of the first friction spinning drum 8.
  • the feed roller 102 pushes the sliver 105 against the needles 106 of the opening roller 103, so that the opening roller 103 rotating at high speed releases fibers from the sliver 7 by means of the needles 106 and conveys them onto the first friction spinning drum 8.
  • This width D differs depending on the ratio of the feeding speed of the sliver 105 and the peripheral speed of the opening roller 103.
  • the fibers of the fiber stream 110 pass on the first friction spinning drum 8 into the gusset gap between the two friction spinning drums 8 and 8 respectively. 11, in which the yarn 10 is formed in a known manner.
  • the yarn 10 is drawn off by the pair of draw rollers.
  • the second friction spinning drum 11 can be a deeper one. occupy a higher position than the first friction spinning drum 8.
  • the suction channel 107 must also be shifted so that the wall 109 changes the position 109A or. the layer 109B and the wall 108 the layer 108A, respectively. occupies position 108B.
  • the suction channel 107 can be replaced each time the position of the second friction spinning drum 11 changes, so that the position of the wall 108A remains for all three variants.
  • the pair of draw-off rollers can also be arranged as a variant on the opposite end of the friction spinning drums, as a result of which the finished yarn 10 is drawn off in the corresponding opposite direction.
  • the fibers released by the opening roller 103 undergo further deflection when they are taken over by the friction spinning rollers, which is conducive to the stretching of the fibers.
  • FIG. 8 shows a variant of the device of FIG. 5, in that in this device the axis of rotation of the opening roller 103 lies essentially parallel to the axes of rotation of the friction spinning drum 8 and 11.
  • the stretching of the fibers during the transfer from the opening roller 103 to the first friction spinning drum 8 also takes place in the variants with a opening roller 103 due to the higher peripheral speed of the friction spinning drum 8 compared to the fiber speed in Area of the transfer point. All that is required is a slightly higher peripheral speed of the friction spinning drum in order to obtain sufficient stretching of the fibers. It can be seen from the position of the second friction spinning drum 11 shown with the broken line that the position of the gusset gap in which the yarn 10 is produced can also be adapted to the length of the fibers to be processed with this variant. The suction channel 117 must also be adapted accordingly.
  • FIG. 9 shows a friction spinning disc 120 instead of a first friction spinning drum 8 and a friction spinning cone 121 instead of a second friction spinning drum 11. Both elements can be driven (not shown) and each rotate about an axis 122 (indicated by a cross) ) resp. 123 (indicated by a dash-dotted line).
  • the friction spinning disc 120 is perforated and in the region 124 indicated by dash-dotted lines through which there is an air flow through a suction channel (not shown) located below the disc.
  • this principle with the drafting system 1, respectively. 1.1 of FIGS. 1 and 2, respectively. 3 and 4 or combined with the resolving unit 100 of FIG. 5 such that the fiber is delivered to the friction spinning disc 120 in one of the directions M. 1 to M. 4 or in any direction in between.
  • the lowest peripheral speed of the disk 120 in the area 124 is greater than the fiber delivery speed, so that the fibers are stretched when they are taken over by the disk 120.

Abstract

In a method and an apparatus for producing a yarn by means of friction spinning drums, a fiber sliver is transformed into a body of fibers and transferred to a first perforated friction spinning drum of such friction spinning drums. At this first perforated friction spinning drum, the fibers are entrained by a suction air stream, produced by a suction passage located in the first perforated friction spinning drum, and are then fed into a converging space formed by and between the friction spinning drums. In this converging space the fibers are twisted into a spun yarn. The spun yarn is withdrawn by withdrawal rollers located near end faces of the friction spinning drums. The suction air stream required for entraining or catching the fibers is limited by walls forming the suction passage. The advantage of this apparatus is that the fibers are mechanically guided over the whole length of their travel path, i.e. from the body of fibers to the twisted yarn. As a result, the fibers never swim freely.

Description

Die Erfindung bezieht sich auf ein Verfahren und auf eine Vorrichtung zur Herstellung eines Garnes oder dergleichen, mittels Friktionsspinnmitteln, wie beschrieben im Oberbegriff des ersten Verfahrens- und im Oberbegriff des ersten Vorrichtungssanspruches.The invention relates to a method and a device for producing a yarn or the like, by means of friction spinning means, as described in the preamble of the first method and in the preamble of the first device claim.

Beim Friktionsspinnen handelt es sich um ein Spinnverfahren, bei welchem Fasern aus einem Faserverband herausgelöst, auf eine perforierte, bewegte Oberfläche abgegeben und auf dieser zusammengedreht werden. Die perforierte Oberfläche ist dazu in einem vorgegebenen Bereich mit einem Saugluftstrom durchsetzt, so dass die in diesem Bereich auf die Oberfläche abgegebenen Fasern durch die Luftströmung erfasst, auf die Oberfläche gebracht und auf dieser bis zum Ende dieses Bereiches, in Bewegungsrichtung der Fläche gesehen, transportiert und anschliessend eingedreht werden. Das Eindrehen geschieht dabei durch den in diesem Endbereich der Strömung, der Bewegungsrichtung der Fläche entgegengesetzt gerichteten Strömungsanteil, welcher dadurch die auf der Fläche liegenden Fasern erfasst und fortlaufend eindreht.Friction spinning is a spinning process in which fibers are released from a fiber structure, released onto a perforated, moving surface and twisted together on it. For this purpose, the perforated surface is interspersed with a suction air flow in a predetermined area, so that the fibers discharged onto the surface in this area are captured by the air flow, brought to the surface and transported there up to the end of this area, viewed in the direction of movement of the surface and then screwed in. The screwing in takes place by the flow portion which is directed in this end region of the flow, the direction of movement of the surface, which thereby detects the fibers lying on the surface and continuously screwing them in.

Durch das ebenfalls zum Verfahren gehörende fortlaufende Abziehen der zusammengedrehten Fasern entsteht ein fertiges Garn mit echter Drehung.The continuous pulling of the twisted fibers, which is also part of the process, creates a finished yarn with real twist.

Aus der deutschen Offenlegungsschrift 1 902 111 ist ein Verfahren und eine Vorrichtung bekannt, mittels welchem ein eingangs erwähntes Garn hergestellt wird.A method and a device are known from German Offenlegungsschrift 1 902 111, by means of which a yarn mentioned at the outset is produced.

Darin werden Fasern von einer gezahnten Walze aus einem Faserverband herausgelöst und einem diese Walze umgebenden Luftstrom übergeben, innerhalb welchem sich die Fasern aus einer Lage in Umfangsrichtung, in eine Lage im wesentlichen parallel zur Rotationsachse der Walze drehen. Nachdem diese Fasern die genannte Lage parallel zur Rotationsachse erreicht haben, werden diese an eine Saugtrommel übergeben, auf deren Oberfläche sie wiederum in einer Lage im wesentlichen parallel zur Rotationsachse dieser Saugtrommel bis zum früher erwähnten Grenzbereich eines solchen Sauglufstromes gefördert und, wie früher beschrieben, zusammen gedreht und durch entsprechende Mittel als fertiges Garn abgezogen werden. Dabei wird das Eindrehen der Fasern zum Garn durch eine zur Saugtrommel parallel liegende und die Saugtrommel beinahe berührende weitere Walze unterstützt. Dementsprechend sind die Bewegungsrichtungen der beiden letztgenannten Walzen an der engsten Stelle entgegengesetzt, d. h. die Drehrichtungen der beiden Walzen sind gleich.In it, fibers are released from a toothed roller from a fiber structure and transferred to an air stream surrounding this roller, within which the fibers rotate from a position in the circumferential direction to a position essentially parallel to the axis of rotation of the roller. After these fibers have reached the said position parallel to the axis of rotation, they are transferred to a suction drum, on the surface of which they in turn are conveyed in a position essentially parallel to the axis of rotation of this suction drum up to the previously mentioned limit region of such a suction air flow and, as described earlier, together rotated and drawn off as a finished yarn by appropriate means. The twisting of the fibers into the yarn is supported by another roller lying parallel to the suction drum and almost touching the suction drum. Accordingly, the directions of movement of the latter two rollers are opposite at the narrowest point, i. H. the directions of rotation of the two rollers are the same.

Ein wesentlicher Nachteil dieses Verfahrens liegt darin, dass die Fasern mittels des Luftstromes am Umfang der verzahnten Walze eine Richtungsänderung erfahren sollten, was nur mit ungenügender Gleichmässigkeit geschieht. Dadurch erhalten die Fasern an der nachfolgenden Saugtrommel eine ungleiche Lage und damit auch eine ungleiche Dichte, was zu unerwünschten Ungleichmässigkeiten im Garn führt, insbesondere, wenn Fasern mit relativ kurzen Stapellängen verarbeitet werden, wie dies beispielsweise im Bereich der Baumwollspinnerei geschieht.A major disadvantage of this method is that the fibers should undergo a change in direction by means of the air flow on the circumference of the toothed roller, which happens only with insufficient uniformity. This gives the fibers on the subsequent suction drum an uneven position and thus an uneven density, which leads to undesirable unevenness in the yarn, especially when fibers with relatively short staple lengths are processed, as is done, for example, in the area of cotton spinning.

Im weiteren ist aus der deutschen Offeniegungsschrift 2 943 063 bekannt, dass Fasern mittels einer verzahnten oder mit Nadeln beschichteten Trommel aus einem Faserverband herausgelöst und einem Luftstrom übergeben werden. Am Ende dieses Luftstromes werden die Fasern in den Zwickelspalt zweier mit gleicher Drehrichtung rotierender Trommeln abgegeben, in welchem die Fasern zusammen gedreht und als Garn abgezogen werden. Dabei ist eine der beiden Trommeln als perforierte Saugtrommel vorgesehen, um dadurch den Fasern die bereits früher beschriebene Möglichkeit des Eindrehens zu erlauben.Furthermore, it is known from German Offenlegungsschrift 2 943 063 that fibers are detached from a fiber structure by means of a toothed drum or coated with needles and transferred to an air stream. At the end of this air flow, the fibers are released into the gusset gap of two drums rotating in the same direction of rotation, in which the fibers are rotated together and drawn off as yarn. One of the two drums is provided as a perforated suction drum in order to allow the fibers to be screwed in as described earlier.

Der Nachteil dieses Verfahrens resp. dieser Vorrichtung besteht darin, dass die Fasern beim Auftreffen im Zwickelspalt aus der hohen Transportgeschwindigkeit im Luftstrom praktisch auf Null abgebremst werden müssen, was zu Stauchungen dieser Fasern und damit zu einer nicht gestreckten Lage der Fasern im Garn führen kann.The disadvantage of this method, respectively. This device consists in the fact that the fibers have to be braked practically to zero when they hit the gusset gap due to the high transport speed in the air flow, which can lead to compression of these fibers and thus to an undrawn position of the fibers in the yarn.

Mit der Erfindung sollen diese Nachteile behoben und ein Verfahren resp. eine Vorrichtung geschaffen werden, bei welchem die Fasern beim Eindrehen zum Garn im wesentlichen eine ge-streckte Lage und eine im wesentlichen gleichmässige Dichte haben. Diese Aufgabe wird durch die im Kennzeichen des ersten Verfahrensanspruches und durch die im Kennzeichen des ersten Vorrichtungsanspruches beschriebenen Massnahmen erfüllt.With the invention, these disadvantages are to be remedied and a method resp. a device are provided in which the fibers during insertion into yarn have substantially a g e-stretched position and a substantially uniform density. This object is achieved by the measures described in the characteristic of the first method claim and by the measures described in the characteristic of the first device claim.

Die Erfindung wird im folgenden anhand von lediglich Ausführungswege darstellenden Zeichnungen näher erläutert.The invention is explained in more detail below with the aid of drawings which only show execution routes.

Es zeigen :

  • Fig. 1 Ein Querschnitt durch eine erfindungsgemässe Vorrichtung, halbschematisch dargestellt,
  • Fig. 2 eine Draufsicht der Vorrichtung von Fig. 1,
  • Fig. 3 ein Querschnitt durch eine Variante der erfindungsgemässen Vorrichtung, halbschematisch dargestellt,
  • Fig. 4 eine Draufsicht der Vorrichtung von Fig. 3,
  • Fig. 5 ein Querschnitt durch eine weitere erfindungsgemässe Vorrichtung, halbschematisch dargestellt,
  • Fig. 6 ein Ausschnitt der Vorrichtung von Fig. 5 als Draufsicht dargestellt,
  • Fig. 7 die Vorrichtung von Fig. 5, ausschnittsweise und in Richtung I (Fig. 5) dargestellt,
  • Fig. 8 eine weitere Variante der Vorrichtung von Fig. 5, halbschematisch dargestellt,
  • Fig. 9 eine Variante eines Teiles der erfindungsgemässen Vorrichtungen, halbschematisch dargestellt.
Show it :
  • 1 shows a cross section through a device according to the invention, shown semi-schematically,
  • 2 is a top view of the device of FIG. 1,
  • 3 shows a cross section through a variant of the device according to the invention, shown semi-schematically,
  • 4 is a top view of the device of FIG. 3;
  • 5 shows a cross section through a further device according to the invention, shown semi-schematically,
  • 6 shows a detail of the device of FIG. 5 as a top view,
  • 7 shows the device from FIG. 5, in sections and in the direction I (FIG. 5),
  • 8 shows a further variant of the device of FIG. 5, shown semi-schematically,
  • Fig. 9 shows a variant of part of the devices according to the invention, shown semi-schematically.

Die Fig. 1 und 2 zeigen ein Streckwerk 1, mit einem Eingangswalzenpaar 2, einem mittleren Walzenpaar 3 und einem Ausgangswalzenpaar 4. Dabei ist das mittlere Walzenpaar in an sich bekannter Weise mit einem Riemchenpaar 5 versehen.1 and 2 show a drafting system 1, with a pair of input rollers 2, a middle pair of rollers 3 and an output pair of rollers 4. The middle pair of rollers is provided with a pair of straps 5 in a manner known per se.

Das Streckwerk verarbeitet ein Faserband 6 oder dergleichen und gibt einen entsprechend verstrecken Faserverband 7 an eine erste Friktionsspinntrommel 8 ab.The drafting system processes a fiber band 6 or the like and delivers a correspondingly stretched fiber structure 7 to a first friction spinning drum 8.

Diese erste Friktionsspinntrommel 8 ist perforiert (nicht dargestellt) und beinhaltet einen Saugkanal 9, welcher durch seine Wände 9.1 und 9.2 eine Saugzone am Umfang der Friktionsspinntrommel 8 abgrenzt. Die Wände 9.1 und 9.2 reichen dabei an die zylindrische Innenwand der Friktionsspinntrommel 8.This first friction spinning drum 8 is perforated (not shown) and contains a suction channel 9 which, by means of its walls 9.1 and 9.2, delimits a suction zone on the circumference of the friction spinning drum 8. The walls 9.1 and 9.2 reach the cylindrical inner wall of the friction spinning drum 8.

Durch diese vom Saugkanal 9 erzeugte Luftströmung werden die Fasern des Faserverbandes 7 innerhalb der Saugzone am entsprechenden Oberflächenteil der drehenden Friktionsspinntrommel festgehalten und letztlich in dem durch die Wand 9.2 des Saugkanales 9 gegebenen Grenzbereich der Saugzone, zur Bildung eines Garnes 10 eingedreht. Die Friktionsspinntrommel 8 dreht dabei in einer mit dem Pfeil U gekennzeichneten Richtung.By means of this air flow generated by the suction channel 9, the fibers of the fiber structure 7 are held within the suction zone on the corresponding surface part of the rotating friction spinning drum and ultimately twisted in the limit region of the suction zone given by the wall 9.2 of the suction channel 9 to form a yarn 10. The friction spinning drum 8 rotates in a direction indicated by the arrow U.

Das Eindrehen der Fasern und Bilden des Garnes 10 geschieht in der eingangs erwähnten Art und Weise.The twisting of the fibers and the formation of the yarn 10 takes place in the manner mentioned at the beginning.

Um dieses Eindrehen zu unterstützen ist der ersten Friktionsspinntrommel 8 eine zweite Friktionsspinntrommel 11 zugeordnet, welche derart nahe an der ersten Friktionsspinntrommel 8 angeordnet ist, dass das im Zwickelspalt beider Friktionsspinntrommeln gebildete Garn zu einem festeren Garn gedreht wird als ohne diese zweite Trommel 11.In order to support this turning in, the first friction spinning drum 8 is assigned a second friction spinning drum 11, which is arranged so close to the first friction spinning drum 8 that the yarn formed in the intermeshing gap of both friction spinning drums is turned into a firmer yarn than without this second drum 11.

Die Bewegungsrichtung R der zweiten Friktionsspinntrommel 11 ist, wie bereits früher erwähnt, an der engsten Stelle der Bewegungsrichtung U der ersten Friktionsspinntrommel 8 entgegengesetzt.As already mentioned earlier, the direction of movement R of the second friction spinning drum 11 is opposite to the narrowest point of the direction of movement U of the first friction spinning drum 8.

Um das Garn 10 abzuziehen, ist in an sich bekannter Weise neben den Friktionsspinntrommein, in Achsrichtung der Friktionsspinntrommel gesehen, ein Abzugswalzenpaar 12 vorgesehen. Im Anschluss daran wird das Garn 10 aufgewunden (nicht gezeigt).In order to draw off the yarn 10, a pair of draw-off rollers 12 is provided in a manner known per se in addition to the friction spinning drum, as seen in the axial direction of the friction spinning drum. The yarn 10 is then wound up (not shown).

Im weiteren kann, um die Fasern fester gegen die erste Friktionsspinntrommel anzupressen, eine zusätzliche Anpresswalze 13 (in Fig. 1 und mit strichpunktierten Linien angedeutet) vorgesehen werden. Diese Walze 13 kann entweder mit gleicher Umfangsgeschwindigkeit wie die erste Friktionsspinntrommel 8 angetrieben oder als sogenannte geschleppte Walze vorgesehen werden.Furthermore, in order to press the fibers more firmly against the first friction spinning drum, an additional pressure roller 13 (indicated in FIG. 1 and with dash-dotted lines) can be provided. This roller 13 can either be driven at the same peripheral speed as the first friction spinning drum 8 or can be provided as a so-called towed roller.

In Fig. 2 ist mit strichpunktierten Linien angedeutet, dass das Abzugswalzenpaar 12 ebenfalls am gegenüberliegenden Ende der Friktionsspinntrommeln angeordnet werden kann, d. h. dass in einem solchen Falle das gebildete Garn 10 in der entsprechend entgegengesetzten Richtung abgezogen wird.In Fig. 2 it is indicated by dash-dotted lines that the pair of draw rollers 12 can also be arranged at the opposite end of the friction spinning drums, i. H. that in such a case the yarn 10 formed is drawn off in the corresponding opposite direction.

Im Betrieb wird das Faserband 6 aus einer Spinnkanne (nicht gezeigt) angeliefert und im Streckwerk 1 zu einem parallelisierten Faserverband 7 verstreckt.In operation, the sliver 6 is delivered from a spinning can (not shown) and drawn in the drafting device 1 to form a parallelized fiber structure 7.

Durch die Saugwirkung des Saugkanales 9. d. h. durch das Ansaugen der Fasern des Faserverbandes 7 gegen die erste Friktionsspinntrommel 8, kombiniert mit der Rotation der ersten Friktionsspinntrommel 8, werden die Fasern aus dem Faserverband 7 herausgelöst und, wie in Fig. 1 gezeigt, in den Zwickelspalt zwischen die beiden Friktionsspinntrommeln 8 und 11 gefördert, in welchem die Fasern zu einem Garn 10 gedreht werden, welches von den Abzugswalzen 12 abgezogen wird.Due to the suction effect of the suction channel 9. d. H. by sucking the fibers of the fiber assembly 7 against the first friction spinning drum 8, combined with the rotation of the first friction spinning drum 8, the fibers are released from the fiber assembly 7 and, as shown in FIG. 1, into the gusset gap between the two friction spinning drums 8 and 11 promoted, in which the fibers are twisted into a yarn 10, which is drawn off from the take-off rollers 12.

Da die Umfangsgeschwindigkeit der Friktionsspinntrommeln 8 und 11 einem Mehrfachen, z. B. dem zwei- bis zwanzigfachen der Geschwindigkeit des Faserverbandes 7 entspricht, entsteht zwischen dem Ausgangswalzenpaar 4 und der ersten Friktionsspinntrommel 8 ein starker Verzug, welcher einerseits eine zusätzliche Streckung der Fasern und andererseits eine starke Verdünnung der Faseransammlungen auf dieser Friktionsspinntrommel 8 verursacht.Since the peripheral speed of the friction spinning drums 8 and 11 is a multiple, e.g. B. corresponds to two to twenty times the speed of the fiber structure 7, there is a strong distortion between the pair of output rollers 4 and the first friction spinning drum 8, which on the one hand causes additional stretching of the fibers and on the other hand a strong thinning of the fiber accumulations on this friction spinning drum 8.

Durch diese Verdünnung und zusätzliche Verstreckung entsteht ein dünner, jedoch gleichmässig lockerer Verband von Stapelfasern, welcher zu einem gleichmässigen Garn eingedreht wird.This thinning and additional stretching result in a thin, but evenly looser bandage of staple fibers, which is twisted into a uniform yarn.

Im weiteren entsteht durch das Abziehen des gedrehten Garnes 10 mittels der Abzugswalzen 12 im Garn eine das Garn verdichtende Streckung, wobei die für die Streckung notwendige Spannung durch die Reibung zwischen dem Garn und den Friktionsspinntrommeln erzeugt wird.Furthermore, drawing off the twisted yarn 10 by means of the draw-off rollers 12 in the yarn creates a stretch compressing the yarn, the tension required for the stretching being generated by the friction between the yarn and the friction spinning drums.

Bei Verwendung der Anpresswalze 13 wird mittels dieser die Reibung zwischen der ersten Friktionsspinntrommel 8 und den durch diese Trommel erfassten Fasern erhöht, so dass der Schlupf zwischen diesen Fasern und der bewegten Friktionsspinntrommel-Oberfläche verkleinert und ein Herauslösen der Fasern aus dem Faserverband 7 verbessert wird.When the pressure roller 13 is used, the friction between the first friction spinning drum 8 and the fibers captured by this drum is increased, so that the slippage between these fibers and the moving friction spinning drum surface is reduced and the removal of the fibers from the fiber assembly 7 is improved.

Die Fig. 3 und 4 zeigen eine Variante, in welcher im wesentlichen das Ausgangswalzenpaar 4 fehlt und das Riemchenpaar 5 die Fasern direkt auf die erste Friktionsspinntrommel 8 gibt.3 and 4 show a variant in which the pair of exit rollers 4 is essentially missing and the pair of straps 5 gives the fibers directly onto the first friction spinning drum 8.

Das reduzierte Streckwerk wird mit 1.1 bezeichnet.The reduced drafting system is designated 1.1.

In dieser Variante ist die Anpresswalze 13 fest zugeordnet. Die weiteren Elemente entsprechen denjenigen der Fig. 1 und 2 und sind entsprechend mit denselben Bezugszeichen versehen.In this variant, the pressure roller 13 is permanently assigned. The other elements correspond to those of FIGS. 1 and 2 and are provided with the same reference numerals accordingly.

Vergleicht man die Vorrichtung von Fig. 1 mit und ohne Antriebswalze 13 mit der Vorrichtung von Fig. 3, so kann in bezug auf die Führung der Fasern des Faserverbandes 7 folgendes festgestellt werden :Comparing the device of FIG. 1 with and without the drive roller 13 with the device of FIG. 3, the following can be found with regard to the guidance of the fibers of the fiber structure 7:

1. Mit der Vorrichtung von Fig. 1 ohne Antriebswalze 13 ist nebst der bereits erwähnten schlechteren Erfassung der Fasern des Faserverbandes 7 durch die erste Friktionsspinntrommel 8 noch der Effekt festzustellen, dass die Fasern sich infolge der gegen diese gerichteten Luftströmung im Ausgangsspalt des rotierenden Ausgangswalzenpaares 4 bündeln, d. h. nicht gleichmässig verteilt abgegeben werden. Diese in Achsrichtung der Ausgangswalzen 4 gegeneinander gerichteten Luftströmungen entstehen, wie an sich bekannt, durch den im Austrittsspalt zweier gegeneinandergepresster Walzen vorhandenen Unterdruck.1. With the device of FIG. 1 without drive roller 13, in addition to the already mentioned poorer detection of the fibers of the fiber structure 7 by the first friction spinning drum 8, the effect that the fibers are due to the air flow directed against them in the exit nip of the rotating exit rollers can also be determined bundle pairs 4, ie not be distributed evenly. These air flows directed towards one another in the axial direction of the outlet rollers 4 arise, as is known per se, from the negative pressure present in the outlet nip of two rollers pressed against one another.

2. Mit der Anpresswalze 13 bleiben die Fasern 7 besser geführt, so dass die genannten Querströmungen nur einen minimalen negativen Einfluss auf die Führung der Fasern 7 ausüben können.2. With the pressure roller 13, the fibers 7 remain better guided, so that the cross flows mentioned can exert only a minimal negative influence on the guidance of the fibers 7.

In der Anwendung der Vorrichtung von Fig. 1 und 3 mit Anpresswalze 13, besteht die Bedingung, dass der Abstand H (Fig. 1) zwischen dem Klemmpunkt der Ausgangswalzen 4 und dem Klemmpunkt der ersten Friktionsspinntrommel 8 und der Anpresswalze 13 die Länge der längsten zu verarbeitenden Fasern nicht unterschritten werden darf, um ein Zerreissen der Fasern zu vermeiden, während in der Anwendung der Vorrichtung ohne Anpresswalze 13 der Abstand H die genannte längste Länge nicht überschreiten darf, um das Erfassen der Fasern durch die Friktionsspinntrommel zu gewährleisten.1 and 3 with the pressure roller 13, the condition exists that the distance H (FIG. 1) between the nip point of the output rollers 4 and the nip point of the first friction spinning drum 8 and the pressure roller 13 increases the length of the longest processing fibers must not be undercut to avoid tearing of the fibers, while in the application of the device without pressure roller 13, the distance H must not exceed the longest length mentioned in order to ensure that the fibers are gripped by the friction spinning drum.

3. Mit der mit Fig. 3 gezeigten Variante besteht gegenüber den beiden vorgenannten Ausführungen der vorteil, dass die Fasern näher gegen den Klemmpunkt zwischen der ersten Friktionsspinntrommel 8 und der Anpresswalze 13 geführt werden, so dass eine Querströmung praktisch keinen Einfluss mehr hat und damit die Verteilung der Fasern 7 auf der ganzen Breite B (Fig. 2 und 4) gleichmässig bleibt.3. With the variant shown in FIG. 3, there is the advantage over the two aforementioned embodiments that the fibers are guided closer to the clamping point between the first friction spinning drum 8 and the pressure roller 13, so that a cross flow has practically no influence and thus the Distribution of the fibers 7 remains uniform over the entire width B (FIGS. 2 and 4).

Die mit Fig. 5 gezeigte weitere erfindungsgemässe Vorrichtung weist ein Auftöseaggregat 100 auf, welches die Fasern auf die Friktionsspinntrommel 8 resp. 11 speist.The further device according to the invention shown with FIG. 5 has a disintegration unit 100, which the fibers onto the friction spinning drum 8 or. 11 feeds.

Das Auflöseaggregat 100 umfasst eine Speisemulde 101, eine Speisewalze 102 sowie eine Auflösewalze 103. Die Speisewalze 102 sowie die Auflösewalze 103 sind drehbar in einem Gehäuse 104 gelagert und antreibbar.The opening unit 100 comprises a feed trough 101, a feed roller 102 and a opening roller 103. The feeding roller 102 and the opening roller 103 are rotatably mounted in a housing 104 and can be driven.

Um ein Faserbanb 105 der Mulde 101 entlang gegen die Auflösewalze 103 zu fördern, ist die Speisewalze 102 mit Längsriffeln (nicht gezeigt) versehen.In order to convey a fiber web 105 along the trough 101 against the opening roller 103, the feed roller 102 is provided with longitudinal corrugations (not shown).

Für das Auflösen des Faserbandes 105 durch die Auflösewalze 103 ist diese in an sich bekannter Weise mit Nadeln 106 oder Zähnen (nicht gezeigt) versehen.To dissolve the sliver 105 by the opening roller 103, the latter is provided with needles 106 or teeth (not shown) in a manner known per se.

Solche Auflöseaggregate sind an sich aus dem Rotor Offen-End-Spinnen bekannt und deshalb nicht weiter beschrieben.Such dissolving units are known per se from the rotor open-end spinning and are therefore not described further.

Die Fig. 6 zeigt schematisch und ausschnittsweise einen Grundriss und die Fig. 7 schematisch und ausschnittsweise eine Seitenansicht der Vorrichtung von Fig. 5. In Fig. 6 wie in Fig. 7 ist der Uebersicht halber das Gehäuse 1-04 sowie die Speisewalze 102 weggelassen.FIG. 6 shows a schematic and partial view of a plan and FIG. 7 shows a schematic side view of the device from FIG. 5. In FIG. 6, as in FIG. 7, the housing 1-04 and the feed roller 102 are omitted for the sake of clarity .

Fig. 7 zeigt im weiteren einen sich in der ersten Friktionsspinntrommel 8 befindlichen Saugkanal 107 mit den Seitenwänden 108 und 109, welche an die innere zylindrische Wand der ersten Friktionsspinntrommel reichen. Die Wände 108 und 109 grenzen, wie bereits früher beschrieben, die Saugzone der ersten Friktionsspinntrommel 8 ab.FIG. 7 further shows a suction channel 107 located in the first friction spinning drum 8 with the side walls 108 and 109 which extend to the inner cylindrical wall of the first friction spinning drum. As described earlier, the walls 108 and 109 delimit the suction zone of the first friction spinning drum 8.

Im Betrieb schiebt die Speisewalze 102 das Faserband 105 gegen die Nadeln 106 der Auflösewalze 103, so dass die mit hoher Drehzahl drehende Auflösewalze 103 mittels der Nadeln 106 Fasern aus dem Faserband 7 herauslöst und diese auf die erste Friktionsspinntrommel 8 fördert. Dadurch entsteht ein Faserstrom 110, welcher, wie in Fig. 5 gezeigt, eine gewisse Breite D aufweist. Diese Breite D ist je nach Verhältnis der Einspeisegeschwindigkeit des Faserbandes 105 und der Umfangsgeschwindigkeit der Auflösewalze 103 unterschiedlich.In operation, the feed roller 102 pushes the sliver 105 against the needles 106 of the opening roller 103, so that the opening roller 103 rotating at high speed releases fibers from the sliver 7 by means of the needles 106 and conveys them onto the first friction spinning drum 8. This creates a fiber stream 110 which, as shown in FIG. 5, has a certain width D. This width D differs depending on the ratio of the feeding speed of the sliver 105 and the peripheral speed of the opening roller 103.

Die Fasern des Faserstromes 110 gelangen auf der ersten Friktionsspinntrommel 8 in den Zwickelspalt zwischen den beiden Friktionsspinntrommeln 8 resp. 11, in welchem in bekannter Weise das Garn 10 gebildet wird.The fibers of the fiber stream 110 pass on the first friction spinning drum 8 into the gusset gap between the two friction spinning drums 8 and 8 respectively. 11, in which the yarn 10 is formed in a known manner.

Wie in den vorangehenden Vorrichtungen wird das Garn 10 durch das Abzugswalzenpaar abgezogen.As in the previous devices, the yarn 10 is drawn off by the pair of draw rollers.

Wie in Fig. 7 mit gestrichelten resp. mit strichpunktierten Linien dargestellt, kann die zweite Friktionsspinntrommel 11 eine tiefere resp. eine höhere Lage gegenüber der ersten Friktionsspinntrommel 8 einnehmen.As shown in Fig. 7 with dashed lines. Shown with dash-dotted lines, the second friction spinning drum 11 can be a deeper one. occupy a higher position than the first friction spinning drum 8.

Mit dieser Lageveränderung kann die Lage des Eindrehens der Fasern z. B. der Faserlänge der zu verarbeitenden Fasern angepasst werden. Das heisst, dass bei längeren Fasern die zweite Friktionsspinntrommel 11 nach unten, während bei kürzeren Fasern diese nach oben, d. h. gegen die Auflösewalze 103 hin, verschoben wird.With this change in position, the position of the insertion of the fibers z. B. the fiber length of the fibers to be processed. This means that with longer fibers, the second friction spinning drum 11 downwards, while with shorter fibers, these upwards, i. H. against the opening roller 103, is moved.

Bei einer Lageveränderung der zweiten Friktionsspinntrommel 11 muss auch der Saugkanal 107 verschoben werden, so dass die Wand 109 die Lage 109A resp. die Lage 109B und die Wand 108 die Lage 108A resp. die Lage 108B einnimmt.If the position of the second friction spinning drum 11 changes, the suction channel 107 must also be shifted so that the wall 109 changes the position 109A or. the layer 109B and the wall 108 the layer 108A, respectively. occupies position 108B.

Um keinen zu hohen Luftverbrauch durch unnötig eingesaugte Luftmengen zu erhalten, kann der Saugkanal 107 jeweils bei Veränderung der Lage der zweiten Friktionsspinntrommel 11 ausgewechselt werden, so dass die Lage der Wand 108A für alle drei Varianten bleibt.In order not to receive excessive air consumption due to unnecessarily sucked-in air quantities, the suction channel 107 can be replaced each time the position of the second friction spinning drum 11 changes, so that the position of the wall 108A remains for all three variants.

Im weiteren ist aus Fig. 5 ersichtlich, dass das Abzugswalzenpaar als Variante auch auf der gegenüberliegenden Stirnseite der Friktionsspinntrommeln angeordnet werden kann, wodurch das fertige Garn 10 in der entsprechend entgegengesetzten Richtung abgezogen wird.5 that the pair of draw-off rollers can also be arranged as a variant on the opposite end of the friction spinning drums, as a result of which the finished yarn 10 is drawn off in the corresponding opposite direction.

In der Variante von Fig. 7 erfahren die von der Auflösewalze 103 abgegebenen Fasern bei der Uebernahme durch die Friktionsspinnwalzen im weiteren eine Umlenkung, welche der Streckung der Fasern förderlich ist.In the variant of FIG. 7, the fibers released by the opening roller 103 undergo further deflection when they are taken over by the friction spinning rollers, which is conducive to the stretching of the fibers.

Fig. 8 zeigt eine Variante der Vorrichtung von Fig. 5, indem bei dieser Vorrichtung die Rotationsachse der Auflösewalze 103 im wesentlichen parallel zu den Rotationsachsen der Friktionsspinntrommel 8 und 11 liegt.FIG. 8 shows a variant of the device of FIG. 5, in that in this device the axis of rotation of the opening roller 103 lies essentially parallel to the axes of rotation of the friction spinning drum 8 and 11.

Die Streckung der Fasern bei der Uebergabe von der Auflösewalze 103 auf die erste Friktionsspinntrommel 8 geschieht bei den Varianten mit einer Auflösewalze 103 ebenfalls durch die höhere Umfangsgeschwindigkeit der Friktionsspinntrommel 8 gegenüber der Fasergeschwindigkeit im Bereich der Uebergabestelle. Dabei genügt lediglich bereits eine leicht höhere Umfangsgeschwindigkeit der Friktionsspinntrommel, um eine genügende Streckung der Fasern zu erhalten. Aus der mit gestrichelter Linie gezeigten Lage der zweiten Friktionsspinntrommel 11 ist ersichtlich, dass auch mit dieser Variante die Lage des Zwickelspaltes, in welchem das Garn 10 erzeugt wird, der Länge der zu verarbeitenden Fasern angepasst werden kann. Entsprechend muss auch der Saugkanal 117 angepasst werden.The stretching of the fibers during the transfer from the opening roller 103 to the first friction spinning drum 8 also takes place in the variants with a opening roller 103 due to the higher peripheral speed of the friction spinning drum 8 compared to the fiber speed in Area of the transfer point. All that is required is a slightly higher peripheral speed of the friction spinning drum in order to obtain sufficient stretching of the fibers. It can be seen from the position of the second friction spinning drum 11 shown with the broken line that the position of the gusset gap in which the yarn 10 is produced can also be adapted to the length of the fibers to be processed with this variant. The suction channel 117 must also be adapted accordingly.

Letztlich zeigt Fig. 9 anstelle einer ersten Friktionsspinntrommel 8 eine die aus dem Faserverband herausgelösten Fasern aufnehmende Friktionsspinnscheibe 120 und anstelle einer zweiten Friktionsspinntrommei 11 einen Friktionsspinnkegel 121. Beide Elemente sind antreibbar (nicht gezeigt) und rotieren je um eine Achse 122 (mit einem Kreuz angedeutet) resp. 123 (mit einer strichpunktierten Linie angedeutet).Finally, FIG. 9 shows a friction spinning disc 120 instead of a first friction spinning drum 8 and a friction spinning cone 121 instead of a second friction spinning drum 11. Both elements can be driven (not shown) and each rotate about an axis 122 (indicated by a cross) ) resp. 123 (indicated by a dash-dotted line).

Die Friktionsspinnscheibe 120 ist gelocht und in dem mit strichpunktierten Linien angedeuteten Bereich 124 durch einen sich unterhalb der Scheibe befindlichen Saugkanal (nicht gezeigt) mit einer Luftströmung durchsetzt.The friction spinning disc 120 is perforated and in the region 124 indicated by dash-dotted lines through which there is an air flow through a suction channel (not shown) located below the disc.

Dieses Prinzip ist aus der GB-Patentschrift 1 231 198 her bekannt.This principle is known from GB Patent 1,231,198.

Erfindungsgemäss wird dieses Prinzip mit dem Streckwerk 1 resp. 1.1 der Fig. 1 und 2 resp. 3 und 4 oder mit dem Auflöseaggregat 100 der Fig. 5 derart kombiniert, dass die Faserabgabe an die Friktionsspinnscheibe 120 in einer der Richtungen M. 1 bis M. 4 oder in irgend einer dazwischen liegenden Richtung erfolgt.According to the invention this principle with the drafting system 1, respectively. 1.1 of FIGS. 1 and 2, respectively. 3 and 4 or combined with the resolving unit 100 of FIG. 5 such that the fiber is delivered to the friction spinning disc 120 in one of the directions M. 1 to M. 4 or in any direction in between.

In allen Fällen ist die kleinste Umfangsgeschwindigkeit der Scheibe 120 im Bereich 124 grösser als die Faserabgabegeschwindigkeit, so dass die Fasern bei der Uebernahme durch die Scheibe 120 eine Streckung erfahren.In all cases, the lowest peripheral speed of the disk 120 in the area 124 is greater than the fiber delivery speed, so that the fibers are stretched when they are taken over by the disk 120.

Durch das mechanische Führen der Fasern bis in das fertige Garn entsteht auch hier der Vorteil, dass die Verteilung der Fasern im Faserbandfluss im wesentlichen konstant bleibt und dass die Fasern eine auf der ersten Friktionsspinntrommel resp. Friktionsspinnscheibe eingenommene Lage auf dem ganzen Weg im wesentlichen beibehalten.By mechanically guiding the fibers into the finished yarn, there is also the advantage that the distribution of the fibers in the sliver flow remains essentially constant and that the fibers are held on the first friction spinning drum. Maintain the friction spinning disc position all the way.

Letztlich ist der Antrieb und die Lagerung aller rotierender Elemente an sich bekannt und deshalb nicht Gegenstand der Erfindung und der Einfachheit halber nicht detailliert erwähnt, sondern lediglich schematisch durch die Achsen A resp. 122 und 123 gekennzeichnet. Ebenfalls ist der Saugkanal in den Fig. 2, 4, 5 und 6 der Einfachheit halber nicht eingezeichnet, es ist jedoch an sich bekannt, dass der stationär angeordnete Saugkanal am nicht gelagerten Ende der Friktionsspinntrommel in diese hineinragt. Dabei ist das gelagerte Ende durch die in den Fig. 2, 4, 5 und 6 eingezeichneten Achsen A gekennzeichnet.Ultimately, the drive and the storage of all rotating elements is known per se and is therefore not the subject of the invention and not mentioned in detail for the sake of simplicity, but only schematically by the axes A and. Marked 122 and 123. Likewise, the suction channel is not shown in FIGS. 2, 4, 5 and 6 for the sake of simplicity, but it is known per se that the stationary suction channel protrudes into the non-supported end of the friction spinning drum. The supported end is characterized by the axes A shown in FIGS. 2, 4, 5 and 6.

Claims (17)

1. Method for the production of a yarn or the like using friction spinning means (8, 11) in which fibres are separated from a fibre strand and are transferred to the friction spinning means to form the yarn and in which the spun yarn (10) is withdrawn in a direction given by the friction spinning means, characterised in that the fibres are guided substantially mechanically over the whole way from the fibre strand until they are taken up by the friction spinning means (8, 11).
2. Method according to claim 1, characterised in that the fibres are taken up by the friction spinning means directly from the fibre strand (7) in such manner that the leading end of the fibres, viewed in the direction of fibre movement, is already caught by the friction spinning means while the trailing end of the fibres has still not left the fibre strand.
3. Method according to claim 1, characterised in that the fibres are separated from the fibre strand (105) by opening means (103) substantially according to the open end method and thereafter are taken up directly by the friction spinning means (8,11) in such manner that the leading end of the fibres, viewed in the direction of fibre movement, is already caught by the friction spinning means while the trailing end of the fibres has still not left the opening means (103).
4. Method according to one of claims 1 to 3, characterised in that the friction spinning means (8, 11) has a higher speed than the fibres to be taken up.
5. Method according to one of claims 1 to 4, characterised in that the fibres are straightened by the friction spinning means (8, 11) during take-up.
6. Method according to claim 1, characterised in that the fibres are transferred to the friction spinning means (8, 11) in a direction extending at right angles to or parallel to the direction of movement of the friction spinning means or in a direction lying between the said directions.
7. Apparatus for production of a yarn or the like, comprising means (1 1.1 ; 103) for delivering fibres from a fibre strand and friction spinning means (8, 11) for taking up the fibres and forming a yarn (10) and means (12) for withdrawing the spun yarn, characterised in that the means (1 ; 1.1 ; 103) for delivering the fibres is arranged so close to the friction spinning means (8, 11) that the fibres to be taken up by the friction spinning means are guided mechanically until take-up by those means.
8. Apparatus according to claim 7, characterised in that the means to deliver fibres is a drafting arrangement (1, 1.1) or a fibre strand (7) leaving the drafting arrangement.
9. Apparatus according to claim 7, characterised in that the means for delivering fibres comprises an opening roller (103).
10. Apparatus according to claim 7, characterised in that the friction spinning means comprises at least one perforated surface (8) movable in a given direction, and in that means are provided to define a suction zone in this surface in such manner that thereby the leading end of the fibres, already released by the means for delivering fibres, is caught by the suction air stream and passed to the perforated moving surface.
11. Apparatus according to claim 10, characterised in that a second surface is provided moving in a direction opposed to the first said surface and assisting twisting of the fibres into a yarn.
12. Apparatus according to claim 10, characterised in that the perforated moving surface is the surface of a disk (120).
13. Apparatus according to claims 11 and 12, characterised in that the second moving surface is formed by the rotational surface of a frusto- cone (121).
14. Apparatus according to claim 10, characterised in that the perforated moving surface is the rotational surface of a cylinder (8).
15. Apparatus according to claims 11 and 12, characterised in that the second moving surface is the rotational surface of a second cylinder (11).
16. Apparatus according to claims 7 and 10, characterised in that the means for delivering the fibres are so arranged that the fibres are delivered in a direction which lies substantially parallel or at right angles to the direction of movement of the moving surface or in a direction lying at an angle between these said directions.
17. Apparatus according to one or more of claims 10 to 15, characterised in that the friction spinning means (8) is also provided with a rotational body (13) frictionally cooperating with the friction spinning means (8) to grasp the leading end of the fibres.
EP85104480A 1984-05-18 1985-04-12 Method and device for manufacturing a yarn with a friction spinning device Expired EP0165398B1 (en)

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AT85104480T ATE32109T1 (en) 1984-05-18 1985-04-12 METHOD AND DEVICE FOR THE MANUFACTURE OF A YARN USING FRICTION SPINNING MEANS.

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CH2450/84 1984-05-18
CH245084 1984-05-18

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EP (1) EP0165398B1 (en)
JP (1) JPS60246824A (en)
AT (1) ATE32109T1 (en)
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AT344552B (en) * 1976-02-02 1978-07-25 Fehrer Ernst Gmbh DEVICE FOR SPINNING TEXTILE FIBERS
AT340809B (en) * 1976-06-21 1978-01-10 Fehrer Ernst Gmbh DEVICE FOR SPINNING TEXTILE FIBERS
ATA170978A (en) * 1977-03-30 1990-09-15 Schlafhorst & Co W METHOD AND DEVICE FOR SPINNING A SINGLE FIBER THREAD
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FR2439832A1 (en) * 1978-10-26 1980-05-23 Platt Saco Lowell Ltd Fibre transfer device for open=end spinning appts. - which deposits fibres parallel to the yarn doffing direction
DE3047987C2 (en) * 1980-01-28 1986-01-23 Ernst Dr. Linz Fehrer Apparatus for producing a yarn
FR2480799A1 (en) * 1980-04-17 1981-10-23 Alsacienne Constr Meca Direct spinning of textile fibres without rotor - using offset surfaces moving in the same direction
US4392343A (en) * 1980-10-08 1983-07-12 Alan Parker Friction spinning apparatus
AT367104B (en) * 1981-02-09 1982-06-11 Fehrer Ernst DEVICE FOR PRODUCING A YARN
ATE28338T1 (en) * 1981-02-21 1987-08-15 Hollingsworth Uk Ltd FRICTION SPINNING DEVICE.
JPS5944406B2 (en) * 1981-11-24 1984-10-29 村田機械株式会社 Spinning method
AT381731B (en) * 1982-12-10 1986-11-25 Fehrer Ernst METHOD AND DEVICE FOR PRODUCING A YARN FROM A STRETCHED FIBER LUN
JPS58214536A (en) * 1982-06-03 1983-12-13 Toray Ind Inc Production of truly twisted spun yarn and apparatus therefor
IN164144B (en) * 1984-05-18 1989-01-21 Rieter Ag Maschf
JPH106529A (en) * 1996-06-19 1998-01-13 Canon Inc Ink jet printer

Also Published As

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US4660371A (en) 1987-04-28
AU4094585A (en) 1985-11-21
JPH0149806B2 (en) 1989-10-26
ATE32109T1 (en) 1988-02-15
IN164144B (en) 1989-01-21
DE3561475D1 (en) 1988-02-25
JPS60246824A (en) 1985-12-06
AU573327B2 (en) 1988-06-02
EP0165398A1 (en) 1985-12-27
US4783956A (en) 1988-11-15

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