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EP0372255B1 - Air jet spinning machine - Google Patents

Air jet spinning machine Download PDF

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Publication number
EP0372255B1
EP0372255B1 EP89120931A EP89120931A EP0372255B1 EP 0372255 B1 EP0372255 B1 EP 0372255B1 EP 89120931 A EP89120931 A EP 89120931A EP 89120931 A EP89120931 A EP 89120931A EP 0372255 B1 EP0372255 B1 EP 0372255B1
Authority
EP
European Patent Office
Prior art keywords
false twist
rollers
pair
jet spinning
draw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89120931A
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German (de)
French (fr)
Other versions
EP0372255A1 (en
Inventor
Herbert Dr. Stalder
Felix Blattmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to AT89120931T priority Critical patent/ATE89617T1/en
Publication of EP0372255A1 publication Critical patent/EP0372255A1/en
Application granted granted Critical
Publication of EP0372255B1 publication Critical patent/EP0372255B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • D01H1/115—Spinning by false-twisting using pneumatic means

Definitions

  • the invention relates to a nozzle spinning device with a drafting system, the front cylinders of which are followed by a false twist unit in the working direction, and with a pair of draw-off rollers arranged in the working direction after the false twist unit.
  • Such nozzle spinning devices are known.
  • the front cylinders deliver a stretched staple fiber ribbon to the false twist unit, which twists the fibers together, so that an incorrectly twisted yarn core is formed, which extends into the area of the front cylinders.
  • Edge fibers are wound on the rotating yarn core with a pitch that is significantly greater than the pitch of the fibers in the yarn core.
  • the large distance not only leads to a large space requirement for the nozzle spinning device, but also to other shortcomings, as explained below.
  • the object of the invention is to avoid existing disadvantages of known nozzle spinning devices, in particular the large space requirement.
  • the object is achieved in that the distance from the clamping line of the front cylinders to the clamping line of the draw-off roller pair 15 is up to 30 cm.
  • the distance from the exit of the false twist unit to the clamping line of the pair of output rollers is preferably only about 10 cm.
  • Dig. 1 shows schematically three lower cylinders 1, 2 and 3 of a drafting system.
  • the associated upper cylinders are not visible in Fig. 1.
  • the front cylinder 3 of the drafting system is followed by a false twist unit 4 in the working direction (from top to bottom in FIG. 1).
  • this contains an intake duct 5 tapering in the working direction, one at the narrowest point of the intake duct adjoining throttle point 6 and a swirl duct 7 adjoining this, in which at least one air supply bore 8 opens, the axis of which crosses the axis of the swirl duct at a distance at an acute angle.
  • the swirl channel 7 forms, together with the throttle point 6, a false twist nozzle.
  • a pair of take-off rollers Arranged in the working direction after the false twist unit 4 is a pair of take-off rollers, of which only the lower roller 9 is visible in FIG. 1.
  • the mode of operation of such a nozzle spinning device is known.
  • the front cylinders 3 deliver a staple fiber strip S into the intake duct 5.
  • the compressed air introduced into the swirl duct 7 through the inclined air supply bore 8 produces a suction effect which sucks the fibers through the throttle point 6.
  • the fibers are twisted together by the air currents in the swirl duct 7, and a wrongly twisted yarn core 10 is formed, which extends into the area of the front cylinders 3.
  • the rotating yarn core 10 detects the majority of the fibers which are fed in the central region of the fiber sliver S via a spinning triangle.
  • edge fibers F are fed into the fiber sliver S, the front ends of which are only gripped by the rotating yarn core 10 in the intake duct 5 and which then wind on the yarn core with a slope that is substantially greater than the slope of the fibers in the core 10.
  • the yarn formed is then drawn off from the false twist unit 4 by the pair of draw rollers 9, the wrong twist of the yarn core 10 largely dissolving.
  • the edge fibers F the slope of which reverses, then form wrapping fibers on the yarn core.
  • the yarn moves approximately along a rotating helix, the pitch of which gradually increases towards the draw roller pair, while at the same time the diameter of the helix gradually decreases.
  • the distance A is from Clamping line K3 of the front cylinder 3 to the clamping line K9 of the take-off rollers 9 is only 15 to 30 cm, preferably 15 to 25 cm, for example approximately 20 cm.
  • the distance B from the outlet 4a of the false twist unit 4 to the clamping line K9 of the take-off rollers 9 is at most 15 cm and is preferably about 10 cm.
  • the spinning process proceeds in the desired manner as described.
  • the yarn core 10 and the helical shape formed by the yarn between the throttle point 6 and the take-off rollers 9 rotate faster than at larger distances.
  • the faster rotation leads to better strength of the yarn produced and / or enables a higher working speed (yarn speed or peripheral speeds of the front cylinders 3 and the take-off rollers 9).
  • the small distances A and B according to the invention naturally reduce the space required for the nozzle spinning device.
  • the reduced space requirement can be advantageously used in a spinning machine in which a space for receiving a spinning can, the drafting device 1, 2, 3, the false twist unit 4, the take-off roller pair 9 and a winding unit are arranged one above the other on a front side or operating side of the machine.
  • a space for receiving a spinning can, the drafting device 1, 2, 3, the false twist unit 4, the take-off roller pair 9 and a winding unit are arranged one above the other on a front side or operating side of the machine.
  • FIG. 2 The drafting device 1, 2, 3, the false twist unit 4 and the take-off roller pair 9 are arranged according to FIG. 2 such that the working direction runs obliquely upwards. The working direction could also run vertically upwards.
  • Below the drafting device 1, 2, 3 there is a space 12 in a machine housing 11 indicated by broken lines for receiving a spinning can 13 from which a fiber sliver 14 is fed to the drafting device 1, 2, 3.
  • a winding unit 15 is arranged for the spun yarn. Due
  • false twist unit 4 has only been described as an example.
  • other false twist units could also be used in the nozzle spinning device, including those which, in addition to the false twist nozzle 6, 7, also contain an additional nozzle upstream of this in the working direction, which lay the edge fibers F around the rotating yarn core 10, with one Slope that is opposite to that of the fibers in the core 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The machine comprises a false twisting unit (4), to which a staple sliver (S) is fed by front cylinders (3) of drawing rollers (1, 2, 3). A pair of delivery rollers (9) for the winding yarn produced is arranged in the operating direction downstream from the false twisting unit (4). The distance (A) from the clamping line (K3) of the front cylinders (3) to the clamping line (K9) of the delivery rollers (9) is only 15 to 30 cm, preferably approximately 20 cm. The distance (B) from the exit (4A) of the false twisting unit (4) to the clamping line (K9) of the delivery rollers (9) can be approximately 10 cm. By virtue of these short distances (A, B), the false twisting unit (4) can twist the yarn faster. By this means, the quality of the yarn is better and/or a higher operating speed is possible. Additionally, the space requirement of the air jet spinning machine is smaller. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Düsenspinnvorrichtung mit einem Streckwerk, dessen Vorderzylindern in Arbeitsrichtung eine Falschdralleinheit nachgeschaltet ist, und mit einem in Arbeitsrichtung nach der Falschdralleinheit angeordneten Abzugswalzenpaar.The invention relates to a nozzle spinning device with a drafting system, the front cylinders of which are followed by a false twist unit in the working direction, and with a pair of draw-off rollers arranged in the working direction after the false twist unit.

Solche Düsenspinnvorrichtungen sind bekannt. In ihnen liefern die Vorderzylinder ein verstrecktes Stapelfaserband an die Falschdralleinheit, welche die Fasern zusammendreht, so dass ein falschgedrallter Garnkern entsteht, der sich bis in den Bereich der Vorderzylinder erstreckt. Auf den rotierenden Garnkern wickeln sich Randfasern mit einer Steigung, die wesentlich grösser ist als die Steigung der Fasern im Garnkern.Such nozzle spinning devices are known. In them, the front cylinders deliver a stretched staple fiber ribbon to the false twist unit, which twists the fibers together, so that an incorrectly twisted yarn core is formed, which extends into the area of the front cylinders. Edge fibers are wound on the rotating yarn core with a pitch that is significantly greater than the pitch of the fibers in the yarn core.

Zwischen der Falschdralleinheit und dem Abzugswalzenpaar, wo sich das Garn als Ganzes längs einer rotierenden Schraubenlinie mit allmählich zunehmender Steigung und abnehmendem Durchmesser bewegt, löst sich der falsche Drall des Garnkerns allmählich wieder auf. Die Randfasern, deren Steigung dabei umkehrt, bilden danach Umwindefasern auf dem Garnkern.Between the false twist unit and the pair of draw rollers, where the yarn as a whole moves along a rotating helix with a gradually increasing pitch and decreasing diameter, the wrong twist of the yarn core gradually dissolves. The edge fibers, whose pitch reverses, then form wrapping fibers on the yarn core.

In bekannten Düsenspinnvorrichtungen ist der Abstand zwischen dem Austritt der Falschdralleinheit und der Klemmlinie des Abzugswalzenpaares recht gross, vermutlich zu dem Zweck, den geordneten Ablauf des beschriebenen Spinnvorgangs zu ermöglichen.In known nozzle spinning devices, the distance between the exit of the false twist unit and the clamping line of the pair of draw-off rollers is quite large, presumably for the purpose of enabling the spinning process described to proceed in an orderly manner.

Der grosse Abstand führt nicht nur zu einem grossen Platzbedarf für die Düsenspinnvorrichtung, sondern auch noch zu anderen Unzulänglichkeiten, wie nachstehend erläutert.The large distance not only leads to a large space requirement for the nozzle spinning device, but also to other shortcomings, as explained below.

Die Aufgabe der Erfindung besteht darin, vorhandene Nachteile bekannter Düsenspinnvorrichtungen, insbesondere den grossen Platzbedarf, zu vermeiden.The object of the invention is to avoid existing disadvantages of known nozzle spinning devices, in particular the large space requirement.

Die Aufgabe wird bei einer Düsenspinnvorrichtung der eingangs angegebenen Art erfindungsgemäss dadurch gelöst, dass der Abstand von der Klemmlinie der Vorderzylinder zur Klemmlinie des Abzugswalzenpaares 15 bis 30 cm beträgt.In a nozzle spinning device of the type specified at the outset, the object is achieved in that the distance from the clamping line of the front cylinders to the clamping line of the draw-off roller pair 15 is up to 30 cm.

Der Abstand vom Austritt der Falschdralleinheit zur Klemmlinie des Ausgangswalzenpaares beträgt vorzugsweise nur etwa 10 cm.The distance from the exit of the false twist unit to the clamping line of the pair of output rollers is preferably only about 10 cm.

Ueberraschenderweise ist gefunden worden, dass bei diesen kleinen Abständen, die einen entsprechend reduzierten Platzbedarf für die Düsenspinnvorrichtung zur Folge haben, nicht nur der Spinnvorgang in gewünschter Weise abläuft, sondern auch bei sonst gleichen Bedingungen ein Garn höherer Qualität, insbesondere höherer Festigkeit, erzielt werden kann oder bei mindestens gleicher Garnqualität eine höhere Spinngeschwindigkeit angewandt werden kann (jeweils im Vergleich mit bekannten Düsenspinnvorrichtungen, in denen die Abstände zum Abzugswalzenpaar wesentlich grösser sind). Ein Grund hierfür liegt vermutlich darin, dass die kürzere Schraubenlinie, die das Garn zwischen der Falschdralleinheit und dem Abzugswalzenpaar bildet, weniger Luftreibung ausgesetzt wird und sich daher rascher drehen kann als eine längere Schraubenlinie, wodurch die Garnqualität besser wird und/oder eine höhere Spinngeschwindigkeit ermöglicht wird.Surprisingly, it has been found that with these small distances, which result in a correspondingly reduced space requirement for the nozzle spinning device, not only does the spinning process take place in the desired manner, but a yarn of higher quality, in particular higher strength, can also be obtained under otherwise identical conditions or with at least the same yarn quality, a higher spinning speed can be used (in each case in comparison with known nozzle spinning devices in which the distances from the pair of draw-off rollers are significantly greater). One reason for this is probably that the shorter helix that forms the yarn between the false twist unit and the pair of take-off rollers is exposed to less air friction and can therefore turn faster than a longer helix, which improves the yarn quality and / or enables a higher spinning speed becomes.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. In dieser zeigen:

  • Fig. 1 eine schematische Schnittansicht der wesentlichen Elemente einer Düsenspinnvorrichtung nach der Erfindung und
  • Fig. 2 eine schematische Seitenansicht einer Düsenspinnvorrichtung mit zusätzlichen Teilen in einer Spinnmaschine.
Embodiments of the invention are explained below with reference to the drawing. In this show:
  • Fig. 1 is a schematic sectional view of the essential elements of a nozzle spinning device according to the invention and
  • Fig. 2 is a schematic side view of a nozzle spinning device with additional parts in a spinning machine.

Dig Fig. 1 Zeigt schematisch drei Unterzylinder 1, 2 und 3 eines Streckwerks. Die zugehörigen Oberzylinder sind in Fig. 1 nicht sichtbar. Dem Vorderzylinder 3 des Streckwerks ist in Arbeitsrichtung (in Fig. 1 von oben nach unten) eine Falschdralleinheit 4 nachgeschaltet. Diese enthält in der dargestellten Ausführungsform einen sich in Arbeitsrichtung verjüngenden Ansaugkanal 5, eine sich an die engste Stelle des Ansaugkanals anschliessende Drosselstelle 6 und einen an diese anschliessenden Drallkanal 7, in welchen wenigstens eine Luftzufuhrbohrung 8 mündet, deren Achse die Achse des Drallkanals in einem Abstand Spitzwinklig kreuzt. Der Drallkanal 7 bildet zusammen mit der Drosselstelle 6 eine Falschdralldüse. In Arbeitsrichtung nach der Falschdralleinheit 4 ist ein Abzugswalzenpaar angeordnet, von dem wiederum nur die Unterwalze 9 in Fig. 1 sichtbar ist.Dig. 1 shows schematically three lower cylinders 1, 2 and 3 of a drafting system. The associated upper cylinders are not visible in Fig. 1. The front cylinder 3 of the drafting system is followed by a false twist unit 4 in the working direction (from top to bottom in FIG. 1). In the embodiment shown, this contains an intake duct 5 tapering in the working direction, one at the narrowest point of the intake duct adjoining throttle point 6 and a swirl duct 7 adjoining this, in which at least one air supply bore 8 opens, the axis of which crosses the axis of the swirl duct at a distance at an acute angle. The swirl channel 7 forms, together with the throttle point 6, a false twist nozzle. Arranged in the working direction after the false twist unit 4 is a pair of take-off rollers, of which only the lower roller 9 is visible in FIG. 1.

Die Wirkungsweise einer solchen Düsenspinnvorrichtung ist bekannt. Die Vorderzylinder 3 liefern ein Stapelfaserband S in den Ansaugkanal 5. Die durch die geneigte Luftzufuhrbohrung 8 in den Drallkanal 7 eingeführte Druckluft erzeugt eine Saugwirkung, welche die Fasern durch die Drosselstelle 6 saugt. Gleichzeitig werden die Fasern durch die Luftströme im Drallkanal 7 zusammengedreht, und es entsteht ein falschgedrallter Garnkern 10, der sich bis in den Bereich der Vorderzylinder 3 erstreckt. Dort erfasst der rotierende Garnkern 10 über ein Spinndreieck den grössten Teil der Fasern, die im mittleren Bereich des Faserbandes S zugeführt werden. Daneben werden im Faserband S Randfasern F zugeführt, deren vordere Enden erst im Ansaugkanal 5 vom rotierenden Garnkern 10 erfasst werden und die sich dann mit einer Steigung auf den Garnkern wikkeln, die wesentlich grösser ist als die Steigung der Fasern im Kern 10.The mode of operation of such a nozzle spinning device is known. The front cylinders 3 deliver a staple fiber strip S into the intake duct 5. The compressed air introduced into the swirl duct 7 through the inclined air supply bore 8 produces a suction effect which sucks the fibers through the throttle point 6. At the same time, the fibers are twisted together by the air currents in the swirl duct 7, and a wrongly twisted yarn core 10 is formed, which extends into the area of the front cylinders 3. There, the rotating yarn core 10 detects the majority of the fibers which are fed in the central region of the fiber sliver S via a spinning triangle. In addition, edge fibers F are fed into the fiber sliver S, the front ends of which are only gripped by the rotating yarn core 10 in the intake duct 5 and which then wind on the yarn core with a slope that is substantially greater than the slope of the fibers in the core 10.

Das gebildete Garn wird dann durch das Abzugswalzenpaar 9 aus der Falschdralleinheit 4 abgezogen, wobei sich der falsche Drall des Garnkerns 10 weitgehend auflöst. Die Randfasern F, deren Steigung dabei umkehrt, bilden dann Umwindefasern auf dem Garnkern. Zwischen der Drosselstelle 6 und dem Abzugswalzenpaar 9 bewegt sich das Garn etwa längs einer rotierenden Schraubenlinie, deren Steigung gegen das Abzugswalzen paar hin allmählich zunimmt, während gleichzeitig der Durchmesser der Schraubenlinie allmählich abnimmt.The yarn formed is then drawn off from the false twist unit 4 by the pair of draw rollers 9, the wrong twist of the yarn core 10 largely dissolving. The edge fibers F, the slope of which reverses, then form wrapping fibers on the yarn core. Between the throttle point 6 and the pair of draw rollers 9, the yarn moves approximately along a rotating helix, the pitch of which gradually increases towards the draw roller pair, while at the same time the diameter of the helix gradually decreases.

Erfindungsgemäss beträgt der Abstand A von der Klemmlinie K3 der Vorderzylinder 3 zur Klemmlinie K9 der Abzugswalzen 9 nur 15 bis 30 cm, vorzugsweise 15 bis 25, z.B. etwa 20 cm. Der Abstand B vom Austritt 4a der Falschdralleinheit 4 zur Klemmlinie K9 der Abzugswalzen 9 beträgt höchstens 15 cm und liegt vorzugsweise bei etwa 10 cm.According to the invention, the distance A is from Clamping line K3 of the front cylinder 3 to the clamping line K9 of the take-off rollers 9 is only 15 to 30 cm, preferably 15 to 25 cm, for example approximately 20 cm. The distance B from the outlet 4a of the false twist unit 4 to the clamping line K9 of the take-off rollers 9 is at most 15 cm and is preferably about 10 cm.

Es ist gefunden worden, dass auch bei diesen kleinen Abständen A und B der Spinnvorgang in der gewünschten Weise wie beschrieben abläuft. Gleichzeitig wird festgestellt, dass bei den angegebenen kleinen Abständen bei gleichbleibender Luftzufuhr durch die Luftzufuhrbohrung(en) 8 der Garnkern 10 und die vom Garn zwischen der Drosselstelle 6 und den Abzugswalzen 9 gebildete Schraubenlinienform rascher drehen als bei grösseren Abständen. Die raschere Drehung führt zu einer besseren Festigkeit des erzeugten Garns und/oder ermöglicht eine höhere Arbeitsgeschwindigkeit (Garngeschwindigkeit bzw. Umfangsgeschwindigkeiten der Vorderzylinder 3 und der Abzugswalzen 9). Zudem wird durch die erfindungsgemäss kleinen Abstände A und B natürlich der Platzbedarf für die Düsenspinnvorrichtung verringert.It has been found that even with these small distances A and B, the spinning process proceeds in the desired manner as described. At the same time, it is found that with the specified small distances with constant air supply through the air supply bore (s) 8, the yarn core 10 and the helical shape formed by the yarn between the throttle point 6 and the take-off rollers 9 rotate faster than at larger distances. The faster rotation leads to better strength of the yarn produced and / or enables a higher working speed (yarn speed or peripheral speeds of the front cylinders 3 and the take-off rollers 9). In addition, the small distances A and B according to the invention naturally reduce the space required for the nozzle spinning device.

Der verringerte Platzbedarf lässt sich vorteilhaft in einer Spinnmaschine ausnutzen, in der ein Raum zur Aufnahme einer Spinnkanne, das Streckwerk 1, 2, 3, die Falschdralleinheit 4, das Abzugswalzenpaar 9 und eine Aufspuleinheit übereinander an einer Vorderseite oder Bedienungsseite der Maschine angeordnet sind. Eine solche Anordnung ist in Fig. 2 schematisch dargestellt. Das Streckwerk 1, 2, 3, die Falschdralleinheit 4 und das Abzugswalzenpaar 9 sind gemäss Fig. 2 so angeordnet, dass die Arbeitsrichtung schräg nach oben verläuft. Die Arbeitsrichtung könnte auch vertikal nach oben verlaufen. Unterhalb des Streckwerks 1, 2, 3 befindet sich in einem mit unterbrochenen Linien angedeuteten Maschinengehäuse 11 ein Raum 12 zur Aufnahme einer Spinnkanne 13, aus der dem Streckwerk 1, 2, 3 ein Faserband 14 zugeführt wird. Oberhalb des Abzugswalzenpaares 9 ist eine Aufspuleinheit 15 für das gesponnene Garn angeordnet. Durch den verringerten Platzbedarf der Düsenspinnvorrichtung liegt die von der Aufspuleinheit 15 gebildete Garnspule weniger hoch oben.The reduced space requirement can be advantageously used in a spinning machine in which a space for receiving a spinning can, the drafting device 1, 2, 3, the false twist unit 4, the take-off roller pair 9 and a winding unit are arranged one above the other on a front side or operating side of the machine. Such an arrangement is shown schematically in FIG. 2. The drafting device 1, 2, 3, the false twist unit 4 and the take-off roller pair 9 are arranged according to FIG. 2 such that the working direction runs obliquely upwards. The working direction could also run vertically upwards. Below the drafting device 1, 2, 3 there is a space 12 in a machine housing 11 indicated by broken lines for receiving a spinning can 13 from which a fiber sliver 14 is fed to the drafting device 1, 2, 3. Above the pair of draw rollers 9 a winding unit 15 is arranged for the spun yarn. Due to the reduced space requirement of the nozzle spinning device, the bobbin formed by the winding unit 15 is less high above.

Abschliessend sei noch bemerkt, dass die Falschdralleinheit 4 nur als Beispiel beschrieben worden ist. Anstelle der Falschdralleinheit 4 könnten in der Düsenspinnvorrichtung auch andere Falschdralleinheiten verwendet werden, auch solche, die zusätzlich zu der Falschdralldüse 6, 7 noch eine dieser in Arbeitsrichtung vorgeschaltete zusätzliche Düse enthalten, welche die Randfasern F um den rotierenden Garnkern 10 herumlegen, und zwar mit einer Steigung, die derjenigen der Fasern im Kern 10 entgegengesetzt ist.Finally, it should be noted that the false twist unit 4 has only been described as an example. Instead of the false twist unit 4, other false twist units could also be used in the nozzle spinning device, including those which, in addition to the false twist nozzle 6, 7, also contain an additional nozzle upstream of this in the working direction, which lay the edge fibers F around the rotating yarn core 10, with one Slope that is opposite to that of the fibers in the core 10.

Claims (6)

  1. Jet spinning apparatus with a drafting arrangement (1, 2, 3) in which a false twist unit (4) is provided behind the front rollers (3) in the processing direction and with a pair of draw-off rollers (9) arranged behind the false twist unit (4) in the processing direction, characterized in that the distance (A) from the clamping line (K3) of the front roller (3) to the clamping line (K9) of the pair of draw-off rollers (9) is 15 to 30 cm.
  2. Jet spinning apparatus as claimed in claim 1, characterized in that said distance (A) is 15 to 25 cm, preferably approx. 20 cm.
  3. Jet spinning apparatus as claimed in claim 1 or 2, characterized in that the distance (B) from the exit (4a) of the false twist unit (4) to the clamping line (K9) of the pair of draw-off rollers (9) is not more than 15 cm, preferably approx. 10 cm.
  4. Jet spinning apparatus as claimed in one of the claims 1 to 3, characterized in that the false twist unit (4) comprises a false twist nozzle (6, 7) and a nozzle arranged in the processing direction before said false twist nozzle.
  5. Jet spinning apparatus as claimed in one of the claims 1 to 3, characterized in that the false twist unit (4) comprises a suction duct (5) tapering in the processing direction and a false twist nozzle (6, 7) following said suction duct and comprising a throttling position (6) and a twist duct (7) into which at least one air supply bore (8) opens out.
  6. Jet spinning apparatus as claimed in one of the claims 1 to 5, characterized in that the drafting arrangement (1, 2, 3), the false twist unit (4) and the pair of draw-off rollers (9) are arranged in such a way that the processing direction is upwardly inclined or vertically upwardly and that a chamber (12) for receiving a sliver can (13) which supplies a sliver (14) to the drafting arrangement (1, 2, 3) is provided below the drafting arrangement (1, 2, 3) and a winder unit (15) for the spun yarn is provided above the pair of draw-off rollers (9).
EP89120931A 1988-11-23 1989-11-11 Air jet spinning machine Expired - Lifetime EP0372255B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89120931T ATE89617T1 (en) 1988-11-23 1989-11-11 JET SPINNING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4357/88 1988-11-23
CH4357/88A CH676860A5 (en) 1988-11-23 1988-11-23

Publications (2)

Publication Number Publication Date
EP0372255A1 EP0372255A1 (en) 1990-06-13
EP0372255B1 true EP0372255B1 (en) 1993-05-19

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EP89120931A Expired - Lifetime EP0372255B1 (en) 1988-11-23 1989-11-11 Air jet spinning machine

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EP (1) EP0372255B1 (en)
JP (1) JP2915940B2 (en)
AT (1) ATE89617T1 (en)
CH (1) CH676860A5 (en)
DE (1) DE58904428D1 (en)

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CH685123A5 (en) * 1991-11-21 1995-03-31 Rieter Ag Maschf Drafting system for a fine spinning machine, in particular a nozzle spinning machine.
JP3185393B2 (en) * 1992-08-28 2001-07-09 村田機械株式会社 Spinning method
JPH10204731A (en) * 1997-01-16 1998-08-04 Murata Mach Ltd Spinning apparatus
US5950413A (en) * 1997-04-18 1999-09-14 Wellman, Inc. Spinning apparatus, method of producing yarns, and resulting yarns
US5970700A (en) * 1997-04-18 1999-10-26 Wellman, Inc. Drafting apparatus and method for producing yarns

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JPS53119334A (en) * 1977-03-24 1978-10-18 Murata Machinery Ltd Direct spinning device
JPS5921725A (en) * 1982-07-21 1984-02-03 Toyoda Autom Loom Works Ltd False twist nozzle for bind spinning
FR2532336A3 (en) * 1982-08-27 1984-03-02 Rieter Ag Maschf AIR JET SPINNING MACHINE
JPS60209026A (en) * 1984-03-27 1985-10-21 Murata Mach Ltd Spinning machine
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JPS6385123A (en) * 1986-09-22 1988-04-15 Murata Mach Ltd Production of spun yarn and apparatus therefor

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EP0372255A1 (en) 1990-06-13
CH676860A5 (en) 1991-03-15
ATE89617T1 (en) 1993-06-15
JP2915940B2 (en) 1999-07-05
DE58904428D1 (en) 1993-06-24
JPH02182923A (en) 1990-07-17

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