EP1802794B1 - Two-for-one twisting spindle comprising a pneumatically actuated threading device - Google Patents

Two-for-one twisting spindle comprising a pneumatically actuated threading device Download PDF

Info

Publication number
EP1802794B1
EP1802794B1 EP05784111A EP05784111A EP1802794B1 EP 1802794 B1 EP1802794 B1 EP 1802794B1 EP 05784111 A EP05784111 A EP 05784111A EP 05784111 A EP05784111 A EP 05784111A EP 1802794 B1 EP1802794 B1 EP 1802794B1
Authority
EP
European Patent Office
Prior art keywords
spindle
injector
compressed air
thread
spindle bolt
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.)
Not-in-force
Application number
EP05784111A
Other languages
German (de)
French (fr)
Other versions
EP1802794A1 (en
Inventor
Heinz Fink
Ludwig Appelhans
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP1802794A1 publication Critical patent/EP1802794A1/en
Application granted granted Critical
Publication of EP1802794B1 publication Critical patent/EP1802794B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/007—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for two-for-one twisting machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/86—Multiple-twist arrangements, e.g. two-for-one twisting devices ; Threading of yarn; Devices in hollow spindles for imparting false twist
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/88—Hollow-spindle arrangements

Definitions

  • the invention relates to a double-twisting spindle with pneumatically operated threading device according to the preamble of claim 1.
  • the thread is usually withdrawn from the stationary supply spool up, introduced into the upper end of a thread inlet tube, deflected downward and guided to the spindle rotor, which he leaves by a Fadenleitkanal or a thread outlet channel in the radial direction.
  • a thread guide eyelet serves as a balloon limiter.
  • the thread then passes over a traversing yarn guide and is wound up on a package.
  • the threading of the thread is made on modern double-twisting machines by means of compressed air and Einfädelinjektor.
  • the Einfädelinjektor compressed air is supplied, whereby a negative pressure is generated, which sucks the thread through the spindle hollow axis, and whereby the thread is then conveyed by means of an air flow through the yarn guide radially outward.
  • the Einfädelinjektor is arranged for example on the stationary part of the hollow shaft, and the air supply is fed horizontally through the protective pot of the double-twisting spindle as it EP 0 489 225 B1 shows.
  • the injector is part of the rotating storage disc. The air supply takes place through the hollow axis of the spindle bolt.
  • EP1101847 A1 is considered to be the closest prior art to the subject-matter of claim 1. It discloses a double-twisting spindle with pneumatically operated threading device for a thread and a rotatable around its vertically disposed spindle axis spindle pin, wherein an injector opens into a Fadenleitkanal, the injector is temporarily connected by a compressed air supply to a compressed air source and the thread during the threading by means of a Air flow is conveyed through the Fadenleitkanal, wherein the compressed air supply has an upstream of the injector annular chamber which is formed at least by the spindle bolt and by a spindle bolt extending around the lip seal element. In this case, the lip seal is firmly connected to the bearing hub attached to the spindle hub.
  • the double-twisting spindle according to the invention represents a compact, space and weight-saving design. For the production no complicated and complicated machining operations are required. Does the compressed air supply to the injector upstream annular chamber, which is formed by a running around the spindle bolt and fixedly connected to this rigid annular flange can the outer diameter of the spindle bolt are kept small and with the help of the annular chamber a strong and uniform injector effect can be achieved. Although it is quite possible within the scope of the invention to form the annular flange in several parts, the number of parts to be mounted is kept low with a one-piece annular flange. A U-shaped ring flange is easy to manufacture and stable.
  • An insert according to claim 4 is simple and inexpensive to produce. As the material of the insert plastic can be selected. On the surfaces of the insert element, which can wear through the running thread, an excellent wear protection can be achieved by the use of ceramic elements.
  • the hollow screw according to claim 6 is used in addition to the air flow at the same time for fastening the Antriebswirtels. Additional fasteners for the drive whisker are unnecessary.
  • the inventive double-twisting spindle is simple in construction and installation and is inexpensive to produce.
  • the injector creates an effective uniformized air flow for threading the thread.
  • Fig. 1 is a double-twisting spindle with a spindle bearing 1 shown.
  • the spindle bolt 2 is rotatably mounted in the bearing housing 5 by means of ball bearings 3, 4.
  • the bearing housing 5 is fixed to the spindle bank 6.
  • the spindle bolt 2 carries a Fadenleitring 7, a U-shaped Ring flange 8 with annular chamber 9 and a drive whorl 10 which is driven by means of a tangential 11.
  • the spindle bolt 2 has an injector 12 whose injector mouth 13 is directed onto the yarn guide channel 14.
  • the injector 12 is temporarily connected to a compressed air source 15.
  • the air flow in the compressed air line 16 can be interrupted by means of a shut-off device 19.
  • the pipe mouth 17 of the leading from the compressed air source 15 to the spindle bolt 2 compressed air line 16 is arranged stationarily below the spindle bolt 2 Such a stationary compressed air supply is in the DE 30 12 427 C2 described in detail.
  • the compressed air line 16 terminates at a short distance from the head of a hollow screw 18. In this embodiment, seals between the pipe mouth 17 and the hollow screw 18 can be dispensed with. Compressed air losses are largely avoided.
  • the hollow screw 18 is attached to the lower end of the spindle bolt 2 and guides the air flow to the coaxial with the spindle bolt 2 extending supply bore 20.
  • the feed hole 20 opens into a transverse bore 21, which in turn ends in the annular chamber 9.
  • the injector 12 is connected via the flange bore 22 and the guide ring bore 23 with the annular chamber 9.
  • the upper part of the spindle bolt 2 holds by means of ball bearings 24, the hollow hub 25 and the bobbin base 26.
  • the bobbin base 26 is rotatable relative to the spindle bolt 2 and is with rotating spindle bolt 2 in position to the bearing housing 5 and the spindle bank 6 by magnetic force from the permanent magnet 27, 28 held.
  • the spindle bolt 2 comprises an insertion element 29 made of plastic with a thread guide 30 made of ceramic.
  • the Insertion element 29 has an oval shape, as in Fig. 2 is shown, and can be used in a corresponding recess of the spindle bolt 2. It can be produced inexpensively and accurately as a molded part.
  • the U-shaped annular flange 8 is fixed in a press fit on the spindle bolt 2.
  • the press fit not only provides a secure, stable connection between the annular flange 8 and the spindle bolt 2, but also a good sealing of the annular chamber 9.
  • the Fadenleitring 7 surrounds the spindle bolt 2 in the amount of Einsetziatas 29 and rests on the annular flange 8, with which it is firmly connected by screws not shown in the figures.
  • the screws engage in threaded holes 31 in the annular flange 8.
  • the location of the threaded holes 31 is the Fig. 3 removable. Even if the threaded holes 31 are performed continuously with a small wall thickness of the annular flange 8 into the annular chamber 9, a good seal is ensured by the formation of the threaded holes 31 with fine thread.
  • the horizontal and thus at right angles to the axis of rotation 33 of the spindle bolt 2 extending Fadenleitkanal 14 of Fadenleitringes 7 has at its outer end a yarn guide ring 32 made of ceramic.
  • the Fadenleitring 7 carries the turntable 34th
  • the thread 35 is withdrawn from the stationary supply spool 36 upwards.
  • the shut-off device 19 is opened and the compressed air flows through the hollow screw 18, the feed bore 20 and the transverse bore 21st in the annular chamber 9 and from there through the flange bore 22, the guide ring bore 23 and the injector 12 to the injector 13th
  • the annular chamber 9 acts as a compressed air reservoir, and it is formed a compressed air buffer.
  • a uniformly high air pressure is achieved at the injector mouth 13 after the pressure buildup.
  • the injected from the injector 12 air generates an air flow to the exit of Fadenleitkanals 14 and a negative pressure in the thread inlet tube 37 of the spindle bolt 2.
  • the thread 35 is sucked by the negative pressure in the thread inlet tube 37, deflected at Fadenleitelement 30 and promoted by the air flow through the Fadenleitkanal 14 , At the thread guide ring 32, the thread 35 is taken and deflected by the air flowing up there. After the threading process, the shut-off device 19 is activated and the connection between compressed air source 15 and spindle bolt 2 is interrupted again.

Abstract

Disclosed is a two-for-one twisting spindle comprising a pneumatically actuated threading device, a spindle bolt (2) that is rotatable about the vertical rotary shaft (33) thereof, and an injector (12) which extends into a thread guiding channel (14). Said injector (12) can be temporarily connected to a compressed air source (15). The thread (35) is conveyed through the thread guiding channel (14) by means of an air flow during the threading process. The compressed air supply unit is provided with an annular chamber (9) which is mounted upstream of the injector (12) and is formed by a rigid annular flange (8) that extends around the spindle bolt (2) and is joined thereto in a fixed manner. The invention can be used in two-for-one twisters.

Description

Die Erfindung betrifft eine Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a double-twisting spindle with pneumatically operated threading device according to the preamble of claim 1.

Bei Doppeldraht-Zwirnspindeln wird der Faden üblicherweise von der stillstehenden Lieferspule nach oben abgezogen, in das obere Ende eines Fadeneinlaufrohres eingeführt, nach unten umgelenkt und zum Spindelrotor geführt, den er durch einen Fadenleitkanal beziehungsweise einen Fadenaustrittskanal in radialer Richtung verlässt.In double-twisting spindles, the thread is usually withdrawn from the stationary supply spool up, introduced into the upper end of a thread inlet tube, deflected downward and guided to the spindle rotor, which he leaves by a Fadenleitkanal or a thread outlet channel in the radial direction.

Nach dem Austritt aus dem Fadenleitkanal wird der Faden nach oben geführt und bildet dabei einen um die Lieferspule rotierenden Ballon. Eine Fadenführungsöse dient als Ballonbegrenzer. Der Faden läuft anschließend über einen Changierfadenführer und wird auf einer Auflaufspule aufgewickelt.After exiting the Fadenleitkanal the thread is guided upwards and forms a rotating around the supply spool balloon. A thread guide eyelet serves as a balloon limiter. The thread then passes over a traversing yarn guide and is wound up on a package.

Das Einfädeln des Fadens wird an modernen Doppeldraht-Zwirnmaschinen mittels Druckluft und Einfädelinjektor vorgenommen. Für den Einfädelvorgang wird dem Einfädelinjektor Druckluft zugeführt, wodurch ein Unterdruck erzeugt wird, der den Faden durch die Spindelhohlachse ansaugt, und wodurch der Faden anschließend mittels eines Luftstromes durch den Fadenleitkanal radial nach außen gefördert wird.The threading of the thread is made on modern double-twisting machines by means of compressed air and Einfädelinjektor. For the threading the Einfädelinjektor compressed air is supplied, whereby a negative pressure is generated, which sucks the thread through the spindle hollow axis, and whereby the thread is then conveyed by means of an air flow through the yarn guide radially outward.

Der Einfädelinjektor ist beispielsweise am stillstehenden Teil der Hohlachse angeordnet, und die Luftzuführung wird horizontal durch den Schutztopf der Doppeldraht-Zwirnspindel zugeführt, wie es die EP 0 489 225 B1 zeigt. In einem weiteren, in der gattungsbildenden DE 30 12 427 C2 dargestellten Ausführungsbeispiel ist der Injektor Bestandteil der rotierenden Speicherscheibe. Die Luftzuführung erfolgt durch die Hohlachse des Spindelbolzens.The Einfädelinjektor is arranged for example on the stationary part of the hollow shaft, and the air supply is fed horizontally through the protective pot of the double-twisting spindle as it EP 0 489 225 B1 shows. In another, in the generic DE 30 12 427 C2 illustrated embodiment, the injector is part of the rotating storage disc. The air supply takes place through the hollow axis of the spindle bolt.

Das Dokument EP1101847 A1 wird als nächstliegender Stand der Technik gegenüber dem Gegenstand des Anspruchs 1 angesehen. Es offenbart einen Doppeldraht - Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung für einen Faden und mit einem um seine vertikal angeordnete Rotationsachse drehbaren Spindelbolzen, wobei ein Injektor in einen Fadenleitkanal mündet, der Injektor durch eine Druckluftzuführung mit einer Druckluftquelle temporär verbindbar ist und der Faden während des Einfädelvorgangs mittels eines Luftstromes durch den Fadenleitkanal hindurch gefördert wird, wobei die Druckluftzuführung eine dem Injektor vorgeordnete Ringkammer aufweist, die mindestens vom Spindelbolzen und von einem um den Spindelbolzen verlaufenden Lippendichtungselement gebildet ist. Dabei ist das Lippendichtungselement mit der am Spindelbank befestigten Lagernabe fest verbunden.The document EP1101847 A1 is considered to be the closest prior art to the subject-matter of claim 1. It discloses a double-twisting spindle with pneumatically operated threading device for a thread and a rotatable around its vertically disposed spindle axis spindle pin, wherein an injector opens into a Fadenleitkanal, the injector is temporarily connected by a compressed air supply to a compressed air source and the thread during the threading by means of a Air flow is conveyed through the Fadenleitkanal, wherein the compressed air supply has an upstream of the injector annular chamber which is formed at least by the spindle bolt and by a spindle bolt extending around the lip seal element. In this case, the lip seal is firmly connected to the bearing hub attached to the spindle hub.

Diese Ausführungen sind mit dem Nachteil behaftet, dass relativ viele Bauteile zueinander abgedichtet und angepasst werden müssen. Insbesondere für die Luftführung sind aufwendige Bearbeitungsvorgänge der Bauteile, beispielsweise zur Bildung der Luftkanäle, notwendig.These embodiments have the disadvantage that a relatively large number of components have to be sealed and adapted to each other. In particular, for the air flow consuming processing operations of the components, for example, to form the air ducts necessary.

Es ist Aufgabe der Erfindung, eine Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung der gattungsgemäßen Art zu verbessern.It is an object of the invention to improve a double-twisting spindle with pneumatically operated threading device of the generic type.

Diese Aufgabe wird mittels einer Doppeldraht-Zwirnspindel mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by means of a double-twisting spindle with the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Die erfindungsgemäße Doppeldraht-Zwirnspindel stellt eine kompakte, raum- und gewichtssparende Ausführung dar. Zur Herstellung sind keine aufwendigen und komplizierten Bearbeitungsvorgänge erforderlich. Weist die Druckluftzuführung eine dem Injektor vorgeordnete Ringkammer auf, die von einem um den Spindelbolzen verlaufenden und mit diesem fest verbundenen starren Ringflansch gebildet ist, kann der Außendurchmesser des Spindelbolzens klein gehalten werden und mit Hilfe der Ringkammer eine starke und gleichmäßige Injektorwirkung erzielt werden. Auch wenn es im Rahmen der Erfindung durchaus möglich ist, den Ringflansch mehrteilig auszubilden, wird mit einem einteiligen Ringflansch die Anzahl der zu montierenden Teile gering gehalten. Ein U-förmiger Ringflansch ist einfach herstellbar und stabil. Mit einem Presssitz des Ringflansches auf dem Spindelbolzen ist eine feste Verbindung zwischen Ringflansch und Spindelbolzen geschaffen und gleichzeitig eine gute, keinem Verschleiß ausgesetzte Abdichtung erzielt. Zusätzliche Dichtelemente sind für die Abdichtung zwischen Ringflansch und Spindelbolzen nicht erforderlich.The double-twisting spindle according to the invention represents a compact, space and weight-saving design. For the production no complicated and complicated machining operations are required. Does the compressed air supply to the injector upstream annular chamber, which is formed by a running around the spindle bolt and fixedly connected to this rigid annular flange can the outer diameter of the spindle bolt are kept small and with the help of the annular chamber a strong and uniform injector effect can be achieved. Although it is quite possible within the scope of the invention to form the annular flange in several parts, the number of parts to be mounted is kept low with a one-piece annular flange. A U-shaped ring flange is easy to manufacture and stable. With a press fit of the annular flange on the spindle bolt a firm connection between the annular flange and the spindle bolt is created while achieving a good, no wear exposed seal. Additional sealing elements are not required for sealing between the annular flange and the spindle bolt.

Ein Einsetzelement nach Anspruch 4 ist einfach und kostengünstig herstellbar. Als Material des Einsetzelementes kann Kunststoff gewählt werden. An den Flächen des Einsetzelementes, die durch den laufenden Faden verschleißen können, ist durch Einsatz von Keramikelementen ein ausgezeichneter Verschleißschutz erzielbar.An insert according to claim 4 is simple and inexpensive to produce. As the material of the insert plastic can be selected. On the surfaces of the insert element, which can wear through the running thread, an excellent wear protection can be achieved by the use of ceramic elements.

Mit einer Ausbildung der Doppeldraht-Zwirnspindel nach Anspruch 5 ist eine stationär angeordnete Druckluftzuführung zum Spindelbolzen möglich. Die lotrecht verlaufende Zuführbohrung und die Querbohrung bilden eine T-förmige Druckluftzuführung zur Ringkammer. Mit dieser Ausbildung wird eine vergleichmäßigte Aufrechterhaltung eines hohen Luftdrucks in der Ringkammer und der Injektormündung gewährleistet.With a design of the double-twisting spindle according to claim 5, a stationary compressed air supply to the spindle bolt is possible. The vertically extending feed bore and the transverse bore form a T-shaped compressed air supply to the annular chamber. With this training, a uniform maintenance of a high air pressure in the annular chamber and the injector is ensured.

Die Hohlschraube nach Anspruch 6 dient neben der Luftführung gleichzeitig zur Befestigung des Antriebswirtels. Zusätzliche Befestigungselemente für den Antriebswirtel erübrigen sich.The hollow screw according to claim 6 is used in addition to the air flow at the same time for fastening the Antriebswirtels. Additional fasteners for the drive whisker are unnecessary.

Bei dieser Befestigungsart mittels Hohlschraube ist eine Drehzahländerung durch Austausch des montierten Antriebswirtels gegen einen Antriebswirtel mit anderem Außendurchmesser leicht und schnell durchführbar.With this type of fastening by means of banjo bolt a speed change by replacing the assembled drive whisker against a drive whip with other outer diameter is easily and quickly feasible.

Die erfindungsgemäße Doppeldraht-Zwirnspindel ist einfach in Aufbau sowie Montage und ist kostengünstig herstellbar. Der Injektor erzeugt einen wirkungsvollen vergleichmäßigten Luftstrom zur Einfädelung des Fadens.The inventive double-twisting spindle is simple in construction and installation and is inexpensive to produce. The injector creates an effective uniformized air flow for threading the thread.

Ein Ausführungsbeispiel der Erfindung ist anhand der Figuren erläutert.An embodiment of the invention is explained with reference to the figures.

Es zeigt:

Fig. 1
eine Teildarstellung einer Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung im Axialschnitt,
Fig. 2
eine Seitenansicht eines teilmontierten Spindelbolzens der Doppeldraht-Zwirnspindel der Fig. 1 mit Einsetzelement,
Fig. 3
eine Draufsicht auf den mit dem Spindelbolzen verbundenen Ringflansch und einen Schnitt A-A durch den Spindelbolzen.
It shows:
Fig. 1
a partial view of a double-twisting spindle with pneumatically operated threading device in axial section,
Fig. 2
a side view of a partially assembled spindle bolt of the double-twisting spindle of Fig. 1 with insertion element,
Fig. 3
a plan view of the connected to the spindle bolt ring flange and a section AA through the spindle bolt.

In der Fig. 1 ist eine Doppeldraht-Zwirnspindel mit einer Spindellagerung 1 dargestellt. Der Spindelbolzen 2 ist mittels Kugellagern 3, 4 drehbar im Lagergehäuse 5 gelagert. Das Lagergehäuse 5 ist an der Spindelbank 6 befestigt. Der Spindelbolzen 2 trägt einen Fadenleitring 7, einen U-förmigen Ringflansch 8 mit Ringkammer 9 und einen Antriebswirtel 10, der mittels eines Tangentialriemens 11 antreibbar ist. Der Spindelbolzen 2 weist einen Injektor 12 auf, dessen Injektormündung 13 auf den Fadenleitkanal 14 gerichtet ist. Der Injektor 12 ist temporär an eine Druckluftquelle 15 angeschlossen. Der Luftstrom in der Druckluftleitung 16 kann mittels einer Absperreinrichtung 19 unterbrochen werden. Die Rohrmündung 17 der von der Druckluftquelle 15 zum Spindelbolzen 2 führenden Druckluftleitung 16 ist stationär unterhalb des Spindelbolzens 2 angeordnet Eine derartige stationäre Druckluftzuführung ist in der DE 30 12 427 C2 ausführlich beschrieben. Die Druckluftleitung 16 endet in geringem Abstand vom Kopf einer Hohlschraube 18. Bei dieser Ausbildung kann auf Dichtungen zwischen der Rohrmündung 17 und der Hohlschraube 18 verzichtet werden. Druckluftverluste werden weitgehend vermieden. Die Hohlschraube 18 ist am unteren Ende des Spindelbolzens 2 befestigt und führt den Luftstrom zu der koaxial zum Spindelbolzen 2 verlaufenden Zuführbohrung 20. Die Zuführbohrung 20 mündet in eine Querbohrung 21, die ihrerseits jeweils in der Ringkammer 9 endet. Der Injektor 12 ist über die Flanschbohrung 22 und die Leitringbohrung 23 mit der Ringkammer 9 verbunden.In the Fig. 1 is a double-twisting spindle with a spindle bearing 1 shown. The spindle bolt 2 is rotatably mounted in the bearing housing 5 by means of ball bearings 3, 4. The bearing housing 5 is fixed to the spindle bank 6. The spindle bolt 2 carries a Fadenleitring 7, a U-shaped Ring flange 8 with annular chamber 9 and a drive whorl 10 which is driven by means of a tangential 11. The spindle bolt 2 has an injector 12 whose injector mouth 13 is directed onto the yarn guide channel 14. The injector 12 is temporarily connected to a compressed air source 15. The air flow in the compressed air line 16 can be interrupted by means of a shut-off device 19. The pipe mouth 17 of the leading from the compressed air source 15 to the spindle bolt 2 compressed air line 16 is arranged stationarily below the spindle bolt 2 Such a stationary compressed air supply is in the DE 30 12 427 C2 described in detail. The compressed air line 16 terminates at a short distance from the head of a hollow screw 18. In this embodiment, seals between the pipe mouth 17 and the hollow screw 18 can be dispensed with. Compressed air losses are largely avoided. The hollow screw 18 is attached to the lower end of the spindle bolt 2 and guides the air flow to the coaxial with the spindle bolt 2 extending supply bore 20. The feed hole 20 opens into a transverse bore 21, which in turn ends in the annular chamber 9. The injector 12 is connected via the flange bore 22 and the guide ring bore 23 with the annular chamber 9.

Der obere Teil des Spindelbolzens 2 haltert mittels Kugellagern 24 die Hohlnabe 25 und den Spulenträgerboden 26. Der Spulenträgerboden 26 ist relativ zum Spindelbolzen 2 drehbar und wird bei rotierendem Spindelbolzen 2 in seiner Position zum Lagergehäuse 5 beziehungsweise zur Spindelbank 6 durch Magnetkraft von den Dauermagneten 27, 28 gehalten.The upper part of the spindle bolt 2 holds by means of ball bearings 24, the hollow hub 25 and the bobbin base 26. The bobbin base 26 is rotatable relative to the spindle bolt 2 and is with rotating spindle bolt 2 in position to the bearing housing 5 and the spindle bank 6 by magnetic force from the permanent magnet 27, 28 held.

Der Spindelbolzen 2 umfasst ein Einsetzelement 29 aus Kunststoff mit einem Fadenleitelement 30 aus Keramik. Das Einsetzelement 29 weist eine ovale Form, wie sie in Fig. 2 dargestellt ist, auf und ist in eine entsprechende Ausnehmung des Spindelbolzens 2 einsetzbar. Es kann als Spritzteil kostengünstig und passgenau hergestellt werden.The spindle bolt 2 comprises an insertion element 29 made of plastic with a thread guide 30 made of ceramic. The Insertion element 29 has an oval shape, as in Fig. 2 is shown, and can be used in a corresponding recess of the spindle bolt 2. It can be produced inexpensively and accurately as a molded part.

Der U-förmig ausgebildete Ringflansch 8 ist im Presssitz auf dem Spindelbolzen 2 befestigt. Durch den Presssitz ist nicht nur eine sichere, stabile Verbindung zwischen Ringflansch 8 und Spindelbolzen 2 geschaffen, sondern auch eine gute Abdichtung der Ringkammer 9.The U-shaped annular flange 8 is fixed in a press fit on the spindle bolt 2. The press fit not only provides a secure, stable connection between the annular flange 8 and the spindle bolt 2, but also a good sealing of the annular chamber 9.

Der Fadenleitring 7 umschließt den Spindelbolzen 2 in Höhe des Einsetzelementes 29 und liegt auf dem Ringflansch 8 auf, mit dem er durch in den Figuren nicht dargestellte Schrauben fest verbunden ist. Die Schrauben greifen in Gewindebohrungen 31 im Ringflansch 8 ein. Die Lage der Gewindebohrungen 31 ist der Fig. 3 entnehmbar. Auch wenn die Gewindebohrungen 31 bei gering gewählter Wandstärke des Ringflansches 8 bis in die Ringkammer 9 durchgehend ausgeführt sind, ist eine gute Abdichtung durch die Ausbildung der Gewindebohrungen 31 mit Feingewinde gewährleistet.The Fadenleitring 7 surrounds the spindle bolt 2 in the amount of Einsetzelementes 29 and rests on the annular flange 8, with which it is firmly connected by screws not shown in the figures. The screws engage in threaded holes 31 in the annular flange 8. The location of the threaded holes 31 is the Fig. 3 removable. Even if the threaded holes 31 are performed continuously with a small wall thickness of the annular flange 8 into the annular chamber 9, a good seal is ensured by the formation of the threaded holes 31 with fine thread.

Der horizontal und damit rechtwinklig zur Rotationsachse 33 des Spindelbolzens 2 verlaufende Fadenleitkanal 14 des Fadenleitringes 7 weist an seinem äußeren Ende einen Fadenführring 32 aus Keramik auf. Der Fadenleitring 7 trägt den Drehteller 34.The horizontal and thus at right angles to the axis of rotation 33 of the spindle bolt 2 extending Fadenleitkanal 14 of Fadenleitringes 7 has at its outer end a yarn guide ring 32 made of ceramic. The Fadenleitring 7 carries the turntable 34th

Zum Einfädeln wird der Faden 35 von der stillstehenden Lieferspule 36 nach oben abgezogen. Die Absperreinrichtung 19 wird geöffnet und die Druckluft strömt durch die Hohlschraube 18, die Zuführbohrung 20 und die Querbohrung 21 in die Ringkammer 9 und von dort weiter durch die Flanschbohrung 22, die Leitringbohrung 23 und den Injektor 12 bis zur Injektormündung 13. Die Ringkammer 9 wirkt als Druckluftspeicher, und es wird ein Druckluftpuffer gebildet. Dadurch wird an der Injektormündung 13 nach dem Druckaufbau ein gleichmäßig hoher Luftdruck erzielt. Die vom Injektor 12 eingeblasene Luft erzeugt eine Luftströmung zum Ausgang des Fadenleitkanals 14 hin und einen Unterdruck im Fadeneinlaufrohr 37 des Spindelbolzens 2. Der Faden 35 wird vom Unterdruck in das Fadeneinlaufrohr 37 gesaugt, am Fadenleitelement 30 umgelenkt und von der Luftströmung durch den Fadenleitkanal 14 gefördert. Am Fadenführring 32 wird der Faden 35 von der dort nach oben strömenden Luft mitgenommen und umgelenkt. Nach dem Einfädelvorgang wird die Absperreinrichtung 19 aktiviert und die Verbindung zwischen Druckluftquelle 15 und Spindelbolzen 2 wieder unterbrochen.For threading the thread 35 is withdrawn from the stationary supply spool 36 upwards. The shut-off device 19 is opened and the compressed air flows through the hollow screw 18, the feed bore 20 and the transverse bore 21st in the annular chamber 9 and from there through the flange bore 22, the guide ring bore 23 and the injector 12 to the injector 13th The annular chamber 9 acts as a compressed air reservoir, and it is formed a compressed air buffer. As a result, a uniformly high air pressure is achieved at the injector mouth 13 after the pressure buildup. The injected from the injector 12 air generates an air flow to the exit of Fadenleitkanals 14 and a negative pressure in the thread inlet tube 37 of the spindle bolt 2. The thread 35 is sucked by the negative pressure in the thread inlet tube 37, deflected at Fadenleitelement 30 and promoted by the air flow through the Fadenleitkanal 14 , At the thread guide ring 32, the thread 35 is taken and deflected by the air flowing up there. After the threading process, the shut-off device 19 is activated and the connection between compressed air source 15 and spindle bolt 2 is interrupted again.

Claims (7)

  1. Two-for-one twisting spindle comprising a pneumatically actuated threading device for a thread (35) and comprising a spindle bolt (2) that is rotatable about its vertically arranged rotational axis, wherein an injector (12) opens into a thread guiding channel (14), the injector can be temporarily connected to a compressed air source (15) by a compressed air supply (16) and the thread (35) is conveyed through the thread guiding channel (14) by means of an air flow during the threading process,
    characterised in that
    the compressed air supply has an annular chamber (9) which is mounted upstream of the injector (12) and which is formed at least by the spindle bolt (2) and by a rigid annular flange (8) which extends around the spindle bolt (2) and is rigidly connected thereto.
  2. Two-for-one twisting spindle according to claim 1, characterised in that the annular flange (8) is configured in one part.
  3. Two-for-one twisting spindle according to claim 1 or 2, characterised in that the annular flange (8) is configured in a U-shape.
  4. Two-for-one twisting spindle according to claim 1, 2 or 3, characterised in that the annular flange (8) is arranged in a press fit on the spindle bolt (2) and the seal of the annular chamber (9) between the spindle bolt (2) and the annular flange (8) is formed by the press fit.
  5. Two-for-one twisting spindle according to any one of claims 1 to 4, characterised in that both a thread guiding element (30) acting as the deflection point of the thread (35) into the thread guiding channel (14) and the injector opening (13) of the injector (12) are arranged in an insertion element (29) which can be introduced into the spindle bolt (2).
  6. Two-for-one twisting spindle according to any one of claims 1 to 5, characterised in that the spindle bolt (2) has in its lower part, a supply bore (20) extending coaxially therein as a compressed air supply, the bore opening into a horizontally arranged transverse bore (21), and in that the supply bore (20) is connected to the annular chamber (9) by means of the transverse bore (21).
  7. Two-for-one twisting spindle according to any one of claims 1 to 6, characterised in that the supply bore (20) begins at the lower end of the spindle bolt (2) in a hollow screw (18) and the compressed air supply runs through the hollow screw (18) on the way from the compressed air source (15) to the injector (12), in that the spindle bolt (2) can be driven by means of a drive wharve (10) and the drive wharve (10) is connected by means of the hollow screw (18) so as to be rotationally secure with the spindle bolt (2).
EP05784111A 2004-10-14 2005-08-06 Two-for-one twisting spindle comprising a pneumatically actuated threading device Not-in-force EP1802794B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004050180A DE102004050180A1 (en) 2004-10-14 2004-10-14 Double-twisting spindle with pneumatically operated threading device
PCT/EP2005/008548 WO2006042578A1 (en) 2004-10-14 2005-08-06 Two-for-one twisting spindle comprising a pneumatically actuated threading device

Publications (2)

Publication Number Publication Date
EP1802794A1 EP1802794A1 (en) 2007-07-04
EP1802794B1 true EP1802794B1 (en) 2010-12-01

Family

ID=35385158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05784111A Not-in-force EP1802794B1 (en) 2004-10-14 2005-08-06 Two-for-one twisting spindle comprising a pneumatically actuated threading device

Country Status (5)

Country Link
US (1) US7467508B2 (en)
EP (1) EP1802794B1 (en)
CN (1) CN101006218B (en)
DE (2) DE102004050180A1 (en)
WO (1) WO2006042578A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029055A1 (en) * 2006-06-24 2007-12-27 Oerlikon Textile Gmbh & Co. Kg Double-twisting spindle with pneumatically operated threading device
FR2937056A1 (en) * 2008-10-13 2010-04-16 Ritm Thread drawing device for textile industry, has control unit controlling compressed air supply unit of coupler and command unit of drive motor of spindle to connect coupler with orifice to create air flow during drawing time
CN103541069A (en) * 2013-09-26 2014-01-29 吴江伊莱纺织科技有限公司 Pneumatic threading spindle
CN103696056A (en) * 2013-11-30 2014-04-02 宁波屹立特沃纺织机械有限公司 Integrated type yarn storing and twisting mechanism
CN107151838B (en) * 2017-06-19 2022-12-20 浙江文源智能科技有限公司 Electric four-twisting spindle
DE102019105072A1 (en) * 2019-02-28 2020-09-03 Saurer Technologies GmbH & Co. KG Coil pot storage

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH533180A (en) 1970-07-15 1973-01-31 Palitex Project Co Gmbh Two-for-one twisting machine with compressed air operated threading device
DE2733318C3 (en) * 1977-07-23 1980-04-30 Palitex Project-Company Gmbh, 4150 Krefeld Two-for-one twisting spindle with a compressed air-operated threading device
DE2756504C3 (en) * 1977-12-19 1980-11-13 Palitex Project-Company Gmbh, 4150 Krefeld Two-for-one twisting spindle with a threading device operated from a compressed air source
US4168605A (en) * 1977-12-28 1979-09-25 Officine Savio, S.P.A. Spindle for double twisting with pneumatic threading
DE3012427A1 (en) * 1980-03-31 1981-04-16 Saurer-Allma Gmbh, 8960 Kempten Pneumatic threading device for two-for-one spindle - with fixed feed jet forming non-sealed union with spindle
DE3118873C2 (en) * 1981-05-13 1985-01-03 Palitex Project-Company Gmbh, 4150 Krefeld Two-for-one twisting spindle
DE3310438C2 (en) * 1983-03-23 1985-04-04 Palitex Project-Company Gmbh, 4150 Krefeld Device for changing the diameter of a drainage aid for the overhead withdrawal of a thread to be wound onto a take-up bobbin from a supply bobbin
DE3336714C2 (en) * 1983-10-08 1986-07-10 Palitex Project-Company Gmbh, 4150 Krefeld Two-for-one twisting spindle without balloon limiter
DE59108176D1 (en) 1990-11-29 1996-10-17 Palitex Project Co Gmbh Double-wire twisting spindle with air-operated threading device
IT1250757B (en) * 1991-08-02 1995-04-21 Savio Spa PERFECTED METHOD FOR PNEUMATIC THREADING IN A TWISTED CABLE SPINDLE WITH A SPINDLE
DE4408262C2 (en) * 1993-04-13 1996-03-14 Palitex Project Co Gmbh Device for setting capsule thread brakes on twisting machines, in particular double-wire twisting machines
DE19540790C1 (en) * 1995-11-02 1996-12-05 Palitex Project Co Gmbh Centrifugal spin twister capsular brake
DE69932549T2 (en) * 1998-07-14 2007-07-12 Murata Kikai K.K. Single twisting machine of the single spindle type
DE19955399C2 (en) 1999-11-18 2001-10-04 Volkmann Gmbh Cable and double wire twist spindle

Also Published As

Publication number Publication date
US20080047250A1 (en) 2008-02-28
DE502005010633D1 (en) 2011-01-13
CN101006218A (en) 2007-07-25
WO2006042578A1 (en) 2006-04-27
EP1802794A1 (en) 2007-07-04
DE102004050180A1 (en) 2006-04-20
US7467508B2 (en) 2008-12-23
CN101006218B (en) 2010-06-02

Similar Documents

Publication Publication Date Title
EP2035606B1 (en) Two-for-one twisting spindle having a pneumatically actuated threading device
EP1748094B1 (en) Spinning machine for the manufacture of yarn by using air vortex streams
EP1802794B1 (en) Two-for-one twisting spindle comprising a pneumatically actuated threading device
EP2329066B1 (en) Air jet spinning unit having spindle-shaped component
DE102009034206A1 (en) Component for an air jet spinning device
EP2403981B1 (en) Open-end rotor spinning device
EP2454403B1 (en) Air-jet spinning apparatus
EP2487282A2 (en) Fibre guidance channel device for an open ended spinning machine
DE19955399A1 (en) Cable and double wire twist spindle
EP0615011B1 (en) Spindle for producing a yarn or a thread
EP0616057B1 (en) Spindle for producing a yarn or a thread
DE4307685C1 (en) Method for building up a thread reserve on a rotating balloon limiter of a multi-wire twisting spindle and multi-wire twisting spindle with rotating balloon limiter
EP0701014A2 (en) Procedure for piecing yarn in a device, for producing a twisted yarn in an integrated spinning and twisting process, as well as a device to carry out the procedure
DE102016006832A1 (en) Twister head rotor
DE102005048041A1 (en) Thread withdrawal device for a cross-wound textile machine
EP0939152B1 (en) Procedure for producing a twisted yarn in an integrated spinning and twisting process using the two-for-one principle, as well as a device to carry out the procedure
EP0697476B1 (en) Procedure for producing a twisted yarn in an integrated spinning and twisting process using the two-for-one principle, as well as a device to carry out the procedure
DE2939702A1 (en) DOUBLE WIRE SPIDER OR TWIN SPINDLE WITH COMPRESSED AIR ACTUATED FEEDER
DE19905184C1 (en) Combined spinning/twisting assembly has the sliver loosening units in a common assembly under the spindle with curved fiber feed tubes to the spinning rotors to save space
EP1361301A2 (en) Cabling spindle, and usage of a self threading yarn guide or centering hole in the area of the cabling hood (protective hood) of a cabling spindle
DE2756504C3 (en) Two-for-one twisting spindle with a threading device operated from a compressed air source
EP0338240A1 (en) Spinning apparatus
DE10359417B4 (en) fiber guide channel
DE3130614C2 (en) Multi-stage thread storage disk for a two-for-one twisting spindle
DE3033046A1 (en) Cladded yarn spinner - has ballooning limit sleeve and inner airflow to remove line from cladding thread

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070514

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH CZ DE FR IT LI TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OERLIKON TEXTILE GMBH & CO. KG

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): CH CZ DE FR IT LI TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: OERLIKON TEXTILE GMBH & CO. KG

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH CZ DE FR IT LI TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 502005010633

Country of ref document: DE

Date of ref document: 20110113

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20110902

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502005010633

Country of ref document: DE

Effective date: 20110902

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502005010633

Country of ref document: DE

Owner name: SAURER GERMANY GMBH & CO. KG, DE

Free format text: FORMER OWNER: OERLIKON TEXTILE GMBH & CO. KG, 42897 REMSCHEID, DE

Effective date: 20130918

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCHMAUDER AND PARTNER AG PATENT- UND MARKENANW, CH

Ref country code: CH

Ref legal event code: PUE

Owner name: SAURER GERMANY GMBH AND CO. KG, DE

Free format text: FORMER OWNER: OERLIKON TEXTILE GMBH AND CO. KG, DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCOW

Free format text: NEW ADDRESS: LEVERKUSER STRASSE 65, 42897 REMSCHEID (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20140821

Year of fee payment: 10

Ref country code: CZ

Payment date: 20140723

Year of fee payment: 10

Ref country code: DE

Payment date: 20140902

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: SAURER GERMANY GMBH & CO. KG, DE

Effective date: 20141013

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20140805

Year of fee payment: 10

Ref country code: FR

Payment date: 20140822

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140806

Year of fee payment: 10

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005010633

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150806

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150831

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150831

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150806

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150806