EP2035606B1 - Two-for-one twisting spindle having a pneumatically actuated threading device - Google Patents
Two-for-one twisting spindle having a pneumatically actuated threading device Download PDFInfo
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- EP2035606B1 EP2035606B1 EP07725354.0A EP07725354A EP2035606B1 EP 2035606 B1 EP2035606 B1 EP 2035606B1 EP 07725354 A EP07725354 A EP 07725354A EP 2035606 B1 EP2035606 B1 EP 2035606B1
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- Prior art keywords
- twisting spindle
- compressed air
- injector
- connection element
- spindle according
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- 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- the thread is usually withdrawn from the stationary supply spool up, introduced into the upper end of a thread inlet tube, deflected downward and guided by a thread brake in the spindle rotor or in the spindle shaft, which he again through a Fadenleitkanal in the radial direction leaves.
- the thread After emerging from the Fadenleitkanal the thread is guided upward and forms a twisting around the supply spool balloon. The thread then passes through a thread guide and is twisted twisted onto a package.
- the DE 3012427 C2 discloses a double-twisting spindle with a pneumatically operated threading device in which the spindle rotor has a coaxially extending connecting channel through which compressed air is supplied.
- the compressed air entering the connecting channel during the threading process flows through the injector and, in the hollow spindle in the upper part of the spindle rotor, generates the suction required for sucking the thread. After completion of the Einfädelvorgangs the compressed air supply is interrupted again.
- the generic DE 10250423 A1 shows a double-twisting spindle with a compressed air-operated threading device, in which the compressed air channel is performed in the lower part of the spindle shaft initially centric and before reaching the yarn storage disc as an oblique bore.
- An air channel in an injector element adjoins the compressed air channel in the spindle shaft, which opens into the thread channel as an injector and generates the required air flow radially outwards in the latter.
- the EP 0 795 634 A2 discloses a double twisting spindle according to the preamble of claim 1.
- the injector is formed as a separate component and includes a curved air duct through which compressed air is supplied.
- the manufacturing costs of these known designs are high. In particular, the production of the channels in the spindle shaft is expensive.
- the efficiency of the known designs is insufficiently low.
- a measure of the efficiency is the static or the dynamic negative pressure, which can be generated in the thread inlet tube or in the thread channel depending on the pressure of the pressure source used. ever lower while the pressure of the compressed air source to achieve a sufficiently high vacuum for sucking the thread, the more economical or efficient the threading is feasible.
- the formation of the air duct in the known designs for the thread channel limits the efficiency.
- the abrupt deflection of the air flow by approximately 90 ° or more causes the compressed air emerging from the compressed air duct first to strike the wall of the injector element perpendicularly before the compressed air flow is deflected and accelerated in the injector element.
- the turbulence occurring in the deflection reduce the efficiency of the injector, since the compressed air supply must be made with a higher pressure to compensate for this effect.
- the compressed air supply comprises a connecting element with a curved air channel which connects the supply bore with the injector, and wherein the connecting element is formed as a separate component and the air duct is adapted to the fluidic requirements.
- the executed as a separate component connecting element has the significant advantage that it can be easily designed in aerodynamically optimized manner to contribute to the optimization of the compressed air-operated threading device.
- the production is easy and inexpensive.
- the inventive fluidic design of the compressed air supply increases the injector effect.
- the pressure of the compressed air source can be lowered in comparison to known devices, without the negative pressure generated for the suction of the thread decreases.
- the negative pressure increases at the same pressure of the compressed air source, so that the suction effect is increased to the thread.
- a calming of the compressed air entering the air duct of the connecting element is achieved by reducing occurring turbulences of the compressed air during the flow through the air duct, which occur after the abrupt deflection on exiting the feed bore into the connecting element. This effect also contributes to be able to reduce the air pressure of the supplied compressed air, without reducing the efficiency of the implementation of the Einfädelvorganges.
- the injector effect in the injector element is improved at a reduced pressure compared to the prior art, which increases the economic efficiency of the twin-wire twisting spindle with compressed air-operated threading device.
- Advantageous embodiments of the connecting element according to one of claims 2 to 7 contribute to the particularly streamlined supply of compressed air to the injector and increase the effect of the injector element.
- the spindle shaft and the thread guide ring preferably have recesses into which the connecting element can be inserted.
- the angular position of the Fadenleitrings on the spindle shaft is adjustable and fixable by the inserted connection element. If the thread guide ring has been pushed with its recess over the connecting element, the Fadenleitkanal and the output of the injector element are aligned. A rotation of spindle shaft and Fadenleitring each other is not possible in the assembled state, since the inserted connection element acts as a rotation.
- a connecting element which consists of two firmly interconnected components, which are mirror images of each other, is simple and less expensive to produce compared with a one-piece connector.
- connection element is made of glass fiber reinforced plastic, it can be produced inexpensively, has little weight and is durable.
- a sealing ring in each case between the connecting element and the spindle shaft and between the connecting element and the injector element is an inexpensive and functionally reliable sealing of the compressed air supply.
- the formation of the connecting element as a separate component allows easy production and adjustment of the air duct to the fluidic requirements. This contributes to cost, a double-twisting spindle according to the invention to be able to produce. The economy in threading is improved by low compressed air consumption, which is possible due to the increased injector.
- FIG. 1 is a double-twisting spindle with a spindle bearing 1 shown.
- the integrally formed spindle shaft 2 is rotatably supported in the bearing housing 4 by means of a ball bearing 3.
- the bearing housing 4 is fixed to the spindle bank 5.
- the spindle shaft 2 carries a Antriebswirtel 6, a Fadenleitring 7 and a bobbin 8 with bobbin base 9 and hollow hub 10.
- the hollow hub 10 is mounted by means of ball bearings 11, 12 on the spindle shaft 2 and has a coaxial thread tube 13.
- the thread tube 13 opens into the upper hollow shaft 14 of the spindle shaft 2 a.
- the spindle shaft 2 is rotatable about the vertical axis of rotation 15.
- Transverse to the axis of rotation 15 extends through the spindle shaft 2 continuous recess with an oval cross-section.
- an injector 16 is inserted from plastic. It can be inexpensive as a molded part and accurately, according to the fluidic requirements, are produced.
- the thread channel 17 of the injector element 16 connects the upper hollow shaft 14 of the spindle shaft 2 with the Fadenleitkanal 18 of Fadenleitringes 7. In the thread channel 17, both the air flow during threading and the thread is deflected. The thread runs over a deflection element 19 made of ceramic.
- the horizontal and thus at right angles to the axis of rotation 15 of the spindle shaft 2 extending Fadenleitkanal 18 of Fadenleitringes 7 has at its outer end a yarn guide 29 made of ceramic.
- the thread guide ring 7 carries the turntable 28.
- the bobbin base 9 is rotatable relative to the spindle shaft 2 and is held at a rotating spindle shaft 2 in its position to the bearing housing 4 and the spindle bank 5 by magnetic force of permanent magnets 41.42 with inferences.
- the injector 16 is temporarily connected to a compressed air source 20.
- the air flow in the compressed air line 21 can be interrupted by means of a shut-off device 22.
- the pipe mouth 23 of the leading from the compressed air source 20 to the spindle shaft 2 compressed air line 21 is arranged stationarily below the spindle shaft 2.
- Such a stationary arranged compressed air supply to the spindle shaft 2 is for example in the DE 3012427 C2 described in detail.
- the compressed air line 21 terminates at a short distance from the supply bore 24 of the spindle shaft 2. In this embodiment can be dispensed with seals between the pipe mouth 23 and the spindle shaft 2. Compressed air losses are largely avoided.
- the compressed air is first fed to the spindle shaft 2 in the feed bore 24 running coaxially to the axis of rotation 15.
- the feed bore 24 opens into a transverse bore 25.
- the transverse bore 25 is connected via the air channel 26 of the connecting element 27 with the injector 16.
- the air channel 26 is semicircular.
- the midline 37 the air channel 26 and the axis of rotation 15 of the spindle shaft 2 lie in one plane.
- the semicircle formed by the center line 37 has a radius between 3 mm and 6 mm.
- FIG. 2 shows the connecting element 27 and the injector 16 in the unassembled state.
- the air channel 26 is largely semicircular.
- the deflection in the connecting element 27 is 180 °.
- the air channel 26 has a circular cross-section and has at its entrance a larger cross section than at its output, which rests in the assembled state on the injector 16. Accordingly, the air duct diameter D E at the inlet of the air duct 26 is greater than the air duct diameter D A at the outlet of the air duct 26.
- the connecting element 27 for receiving sealing rings 30, 31 is formed.
- the injector 16 includes an injector bore 32 in the thread channel 17th opens and which is directed to the yarn guide channel 18.
- the Injektorbohrung 32 and the Fadenleitkanal 18 are arranged in alignment.
- the diameter of the injector bore 32 is significantly smaller than the diameter of the thread channel 17. This creates a step 40, as in FIG. 1 shown.
- the air emerging from the injector bore 32 as an injector jet can flow freely in the direction of the yarn guide channel 18.
- the straight injector bore 32 has a constant diameter.
- Such Injektorbohrung 32 with a length between 5 mm and 6 mm allows a homogenization of the injector jet.
- the thread channel mouth 33 is adapted to the circular shape of the cross section of the spindle shaft 2 and opens directly into the Fadenleitkanal 18 a.
- the deflecting element 19, which is exposed to the friction by the running thread, is pressed into the injector 16 and held by the resilient retaining tabs 34, 35.
- the deflecting element 19 forms the upper wall of the thread channel 17 in the installed state, as in FIG. 1 shown. While the injector element 16 is made of plastic, the deflecting element consists of highly wear-resistant ceramic.
- FIG. 3 shows a connecting element half 36.
- the center line 37 of the air duct 26 extends at the entrance of the air duct 26 in a straight line, then semicircular and at the outlet of the air duct 26 again in a straight line. Also clearly visible in this illustration is that the air duct diameter D E at the inlet of the air duct 26 is significantly larger than the air duct diameter D A at the outlet of the air duct 26.
- connecting element half 36 and a mirror-image second connecting element half are joined together to form the connecting element 27 in such a way that the air duct 26 forms with a circular cross section.
- the connecting element half 36 and the second connecting element half are made of plastic, the connecting element 27 can be produced from the two components, for example by means of ultrasonic welding. In this way, simple molds for the injection molding process can be used and the production becomes cheaper.
- the shut-off device 22 is opened and the compressed air flows from the compressed air source 20 through the compressed air line 21, the feed bore 24 and the transverse bore 25 in the connecting element 27 and from there through the Injektorbohrung 32 in the thread channel 17.
- the injected from the Injektorbohrung 32 air generates an air flow to the output the Fadenleitkanals 18 and a negative pressure in the thread tube 13, which propagates, for example, to the mouth of the thread inlet tube.
- the ready held end of the thread is sucked by the negative pressure in the thread inlet tube and the thread tube 13, deflected at the deflecting element 19 and further promoted by the air flow through the Fadenleitkanal 18.
- the thread exits with the air flowing out there and can then be detected manually by the operator.
- the shut-off device 22 is activated and the connection between the compressed air source 20 and injector bore 32 is interrupted again.
- the inventive design of the double-twisting spindle allows the air pressure of the compressed air source 20 in comparison to a known training, as they DE 10250423 A1 shows, for example, reduce from 3 bar to 1.7 bar, without the negative pressure with which the thread is sucked, is lower. This reduces the air consumption during threading by 60 to 70%. The lower air consumption leads to increased efficiency of the double-twisting spindle according to the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
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 still stehenden Lieferspule nach oben abgezogen, in das obere Ende eines Fadeneinlaufrohres eingeführt, nach unten umgelenkt und durch eine Fadenbremse in den Spindelrotor beziehungsweise in den Spindelschaft geführt, den er durch einen Fadenleitkanal in radialer Richtung wieder 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 by a thread brake in the spindle rotor or in the spindle shaft, which he again through a Fadenleitkanal in the radial direction leaves.
Nach dem Austritt aus dem Fadenleitkanal wird der Faden nach oben geführt und bildet beim Zwirnen einen um die Lieferspule rotierenden Ballon. Der Faden läuft anschließend durch einen Fadenführer und wird verzwirnt auf eine Auflaufspule aufgewickelt.After emerging from the Fadenleitkanal the thread is guided upward and forms a twisting around the supply spool balloon. The thread then passes through a thread guide and is twisted twisted onto a package.
An modernen Doppeldraht-Zwirnmaschinen wird das Einfädeln des Fadens mittels Druckluft und Einfädelinjektor vorgenommen. Für den Einfädelvorgang wird dem Einfädelinjektor Druckluft zugeführt. Die aus dem Einfädelinjektor ausströmende Luft erzeugt im Fadenleitkanal einen zur Mündung des Fadenleitkanals nach außen gerichteten Luftstrom. Es entsteht ein Unterdruck in dem als Hohlspindel ausgebildeten Teil des Spindelschaftes. Die angesaugte Luft zieht den bereit gehaltenen Faden in die Einmündung am oberen Ende des Fadeneinlaufrohres ein. Der Luftstrom befördert den Faden durch den Fadenleitkanal nach außen. Nach Verlassen des Fadenleitkanals kann der Faden von der Bedienungsperson manuell erfasst und für weitere Bearbeitungsschritte von der Lieferspule abgezogen und positioniert werden.At modern double-twisting machines the threading of the thread by means of compressed air and Einfädelinjektor is made. For Einfädelvorgang the Einfädelinjektor compressed air is supplied. The air flowing out of the Einfädelinjektor generated in Fadenleitkanal a directed to the mouth of Fadenleitkanals outward airflow. The result is a negative pressure in the form of a hollow spindle part of the spindle shaft. The sucked air pulls the prepared held thread in the junction at the upper end of the thread inlet tube. The air flow conveys the thread through the Fadenleitkanal outward. After leaving the Fadenleitkanals the thread of the Manually detected and removed from the supply spool and positioned for further processing steps.
Die
Die gattungsbildende
Die
Die Herstellungskosten dieser bekannten Ausführungen sind hoch. Insbesondere die Fertigung der Kanäle im Spindelschaft ist aufwendig. Die Effizienz der bekannten Ausführungen ist unzureichend niedrig. Ein Maß für die Effizienz ist dabei der statische beziehungsweise der dynamische Unterdruck, der im Fadeneinlaufrohr beziehungsweise im Fadenkanal in Abhängigkeit vom Druck der eingesetzten Druckquelle erzeugbar ist. Je niedriger dabei der Druck der Druckluftquelle zur Erzielung eines ausreichend hohen Unterdruckes zum Ansaugen des Fadens ist, desto wirtschaftlicher beziehungsweise effizienter ist der Einfädelvorgang durchführbar. Die Ausbildung der Luftführung bei den bekannten Ausführungen zum Fadenkanal beschränkt die Effizienz.The manufacturing costs of these known designs are high. In particular, the production of the channels in the spindle shaft is expensive. The efficiency of the known designs is insufficiently low. A measure of the efficiency is the static or the dynamic negative pressure, which can be generated in the thread inlet tube or in the thread channel depending on the pressure of the pressure source used. ever lower while the pressure of the compressed air source to achieve a sufficiently high vacuum for sucking the thread, the more economical or efficient the threading is feasible. The formation of the air duct in the known designs for the thread channel limits the efficiency.
Zudem führt die abrupte Umlenkung des Luftstromes um rund 90° oder mehr dazu, dass die aus dem Druckluftkanal austretende Druckluft zunächst senkrecht auf die Wand des Injektorelements trifft, bevor der Druckluftstrom umgelenkt und im Injektorelement beschleunigt wird. Die in dem Umlenkpunkt auftretenden Verwirbelungen vermindern die Effizienz des Injektorelements, da zur Kompensation dieses Effektes die Druckluftzufuhr mit einem höheren Druck erfolgen muss.In addition, the abrupt deflection of the air flow by approximately 90 ° or more causes the compressed air emerging from the compressed air duct first to strike the wall of the injector element perpendicularly before the compressed air flow is deflected and accelerated in the injector element. The turbulence occurring in the deflection reduce the efficiency of the injector, since the compressed air supply must be made with a higher pressure to compensate for this effect.
Es ist Aufgabe der Erfindung, eine bekannte Doppeldraht-Zwirnspindel so weiter zu bilden, dass die Menge der zugeführten Druckluft bei gleichem oder höherem erzeugtem Unterdruck reduziert werden kann.It is an object of the invention to further develop a known double-twisting spindle so that the amount of compressed air supplied can be reduced at the same or higher negative pressure generated.
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.
Bei der erfindungsgemäßen Doppeldraht-Zwirnspindel umfasst die Druckluftzuführung ein Verbindungselement mit gekrümmtem Luftkanal, der die Zuführbohrung mit dem Injektorelement verbindet, und wobei das Verbindungselement als separates Bauteil ausgebildet und der Luftkanal den strömungstechnischen Erfordernissen angepasst ist. Im Gegensatz zum Stand der Technik, bei dem die Druckluftzuführung und das daran angeschlossene Injektorelement wenig Gestaltungsmöglichkeiten zur Verbesserung des Strömungsverhaltens bieten, weist das als separates Bauteil ausgeführte Verbindungselement den wesentlichen Vorteil auf, dass es leicht in strömungstechnisch optimierter Weise gestaltet werden kann, um zur Optimierung der druckluftbetätigten Einfädelvorrichtung beizutragen. Zudem ist die Herstellung einfach und kostengünstig möglich. Die erfindungsgemäße strömungstechnische Ausbildung der Druckluftzuführung steigert die Injektorwirkung. Der Druck der Druckluftquelle kann im Vergleich zu bekannten Vorrichtungen abgesenkt werden, ohne dass der zum Ansaugen des Fadens erzeugte Unterdruck absinkt. Alternativ erhöht sich der Unterdruck bei gleichem Druck der Druckluftquelle, so dass die Ansaugwirkung auf den Faden erhöht wird. Darüber hinaus wird eine Beruhigung der in den Luftkanal des Verbindungselementes eintretenden Druckluft erreicht, indem auftretende Verwirbelungen der Druckluft während der Durchströmung des Luftkanals gemindert werden, die nach der abrupten Umlenkung beim Austritt aus der Zuführbohrung in das Verbindungselement auftreten. Dieser Effekt trägt ebenfalls dazu bei, den Luftdruck der zugeführten Druckluft reduzierten zu können, ohne die Effizienz der Durchführung des Einfädelvorganges zu verringern. Insgesamt wird die Injektorwirkung in dem Injektorelement bei einem gegenüber dem Stand der Technik reduzierten Druck verbessert, was die wirtschaftliche Effizienz der Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung erhöht.In the double-twisting spindle according to the invention, the compressed air supply comprises a connecting element with a curved air channel which connects the supply bore with the injector, and wherein the connecting element is formed as a separate component and the air duct is adapted to the fluidic requirements. In contrast to the prior art, in which the compressed air supply and the thereto connected injector provide little design options to improve the flow behavior, the executed as a separate component connecting element has the significant advantage that it can be easily designed in aerodynamically optimized manner to contribute to the optimization of the compressed air-operated threading device. In addition, the production is easy and inexpensive. The inventive fluidic design of the compressed air supply increases the injector effect. The pressure of the compressed air source can be lowered in comparison to known devices, without the negative pressure generated for the suction of the thread decreases. Alternatively, the negative pressure increases at the same pressure of the compressed air source, so that the suction effect is increased to the thread. In addition, a calming of the compressed air entering the air duct of the connecting element is achieved by reducing occurring turbulences of the compressed air during the flow through the air duct, which occur after the abrupt deflection on exiting the feed bore into the connecting element. This effect also contributes to be able to reduce the air pressure of the supplied compressed air, without reducing the efficiency of the implementation of the Einfädelvorganges. Overall, the injector effect in the injector element is improved at a reduced pressure compared to the prior art, which increases the economic efficiency of the twin-wire twisting spindle with compressed air-operated threading device.
Vorteilhafte Ausbildungen des Verbindungselementes gemäß einem der Ansprüche 2 bis 7 tragen zur besonders strömungsgünstigen Zuführung der Druckluft zum Injektorelement bei und erhöhen die Wirkung des Injektorelementes.Advantageous embodiments of the connecting element according to one of
In einem Luftkanal, der an seinem Eingang einen größeren Querschnitt als an seinem Ausgang aufweist, wird die Strömungsgeschwindigkeit der Luft erhöht. Dadurch wird der Injektorstrahl, der von der in den Fadenleitkanal austretenden Luft gebildet wird, vorverstärkt.In an air duct, which has at its entrance a larger cross-section than at its output, the Flow rate of air increased. As a result, the injector jet, which is formed by the air emerging into the thread guide, pre-amplified.
Der Spindelschaft und der Fadenleitring weisen vorzugsweise Ausnehmungen auf, in die das Verbindungselement einsetzbar ist. Die Winkelposition des Fadenleitrings auf dem Spindelschaft ist durch das eingesetzte Verbindungselement justierbar und fixierbar. Ist der Fadenleitring mit seiner Ausnehmung über das Verbindungselement geschoben worden, fluchten der Fadenleitkanal und der Ausgang des Injektorelementes zueinander. Ein Verdrehen von Spindelschaft und Fadenleitring zueinander ist im montierten Zustand nicht möglich, da das eingesetzte Verbindungselement als Verdrehsicherung wirkt.The spindle shaft and the thread guide ring preferably have recesses into which the connecting element can be inserted. The angular position of the Fadenleitrings on the spindle shaft is adjustable and fixable by the inserted connection element. If the thread guide ring has been pushed with its recess over the connecting element, the Fadenleitkanal and the output of the injector element are aligned. A rotation of spindle shaft and Fadenleitring each other is not possible in the assembled state, since the inserted connection element acts as a rotation.
Ein Verbindungselement, das aus zwei fest miteinander verbundenen Bauteilen besteht, die spiegelbildlich zueinander ausgebildet sind, ist einfach und im Vergleich mit einem einstückig gefertigten Verbindungselement weniger aufwendig herstellbar.A connecting element, which consists of two firmly interconnected components, which are mirror images of each other, is simple and less expensive to produce compared with a one-piece connector.
Besteht das Verbindungselement aus glasfaserverstärktem Kunststoff, lässt es sich kostengünstig herstellen, hat nur wenig Gewicht und ist haltbar.If the connection element is made of glass fiber reinforced plastic, it can be produced inexpensively, has little weight and is durable.
Ein Dichtungsring jeweils zwischen dem Verbindungselement und dem Spindelschaft sowie zwischen dem Verbindungselement und dem Injektorelement stellt eine preiswerte und funktionssichere Abdichtung der Druckluftzuführung dar.A sealing ring in each case between the connecting element and the spindle shaft and between the connecting element and the injector element is an inexpensive and functionally reliable sealing of the compressed air supply.
Die Ausbildung des Verbindungselementes als separates Bauteil erlaubt ein leichtes Herstellen und Anpassen des Luftkanals an die strömungstechnischen Erfordernisse. Dies trägt dazu bei, eine erfindungsgemäße Doppeldraht-Zwirnspindel kostengünstig herstellen zu können. Die Wirtschaftlichkeit beim Einfädelvorgang wird durch geringen Druckluftverbrauch, der aufgrund der erhöhten Injektorwirkung möglich ist, verbessert.The formation of the connecting element as a separate component allows easy production and adjustment of the air duct to the fluidic requirements. This contributes to cost, a double-twisting spindle according to the invention to be able to produce. The economy in threading is improved by low compressed air consumption, which is possible due to the increased injector.
Ein Ausführungsbeispiel der Erfindung ist anhand der Figuren erläutert.An embodiment of the invention is explained with reference to the figures.
Es zeigen:
- Figur 1
- eine Teildarstellung einer Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung im Axialschnitt,
Figur 2- eine perspektivische Ansicht eines demontierten Verbindungselementes mit Dichtungsringen sowie eines Injektorelementes mit Umlenkstück,
Figur 3- eine perspektivische Ansicht einer Hälfte eines geteilten Verbindungselementes.
- FIG. 1
- a partial view of a double-twisting spindle with pneumatically operated threading device in axial section,
- FIG. 2
- a perspective view of a disassembled connecting element with sealing rings and an injector element with deflecting piece,
- FIG. 3
- a perspective view of a half of a split connector.
In der
Das Injektorelement 16 ist temporär an eine Druckluftquelle 20 anschließbar. Der Luftstrom in der Druckluftleitung 21 kann mittels einer Absperreinrichtung 22 unterbrochen werden. Die Rohrmündung 23 der von der Druckluftquelle 20 zum Spindelschaft 2 führenden Druckluftleitung 21 ist stationär unterhalb des Spindelschaftes 2 angeordnet. Eine derartige stationär angeordnete Druckluftzuführung zum Spindelschaft 2 ist beispielsweise in der
Die Fadenkanalmündung 33 ist der Kreisform des Querschnittes des Spindelschaftes 2 angepasst und mündet direkt in den Fadenleitkanal 18 ein. Das Umlenkelement 19, das der Reibung durch den laufenden Faden ausgesetzt ist, wird in das Injektorelement 16 eingedrückt und von den federnden Haltelaschen 34, 35 gehalten. Das Umlenkelement 19 bildet in eingebautem Zustand die obere Wandung des Fadenkanals 17, wie in
Die dargestellte Verbindungselementhälfte 36 und eine spiegelbildlich ausgeführte zweite nicht gezeigte Verbindungselementhälfte werden so zum Verbindungselement 27 zusammengefügt, dass sich der Luftkanal 26 mit kreisförmigem Querschnitt bildet. Bestehen die Verbindungselementhälfte 36 und die zweite Verbindungselementhälfte aus Kunststoff, kann das Verbindungselement 27 aus den beiden Bauteilen zum Beispiel mittels Ultraschallverschweißung hergestellt werden. Auf diese Weise sind einfache Formen für den Spritzgussprozess verwendbar und die Herstellung wird kostengünstiger.The illustrated connecting
Zum Einfädeln wird der Faden zum Beispiel manuell von der still stehenden Lieferspule nach oben abgezogen und vor dem Fadeneinlaufrohr bereitgehalten. Die Absperreinrichtung 22 wird geöffnet und die Druckluft strömt von der Druckluftquelle 20 durch die Druckluftleitung 21, die Zuführbohrung 24 und die Querbohrung 25 in das Verbindungselement 27 und von dort weiter durch die Injektorbohrung 32 in den Fadenkanal 17. Die aus der Injektorbohrung 32 eingeblasene Luft erzeugt eine Luftströmung zum Ausgang des Fadenleitkanals 18 hin und einen Unterdruck im Fadenrohr 13, der sich zum Beispiel bis zur Einmündung des Fadeneinlaufrohres fortpflanzt. Das bereit gehaltene Ende des Fadens wird vom Unterdruck in das Fadeneinlaufrohr und das Fadenrohr 13 gesaugt, am Umlenkelement 19 umgelenkt und weiter von der Luftströmung durch den Fadenleitkanal 18 gefördert. Am Fadenführer 29 tritt der Faden mit der dort ausströmenden Luft aus und kann anschließend von der Bedienungsperson manuell erfasst werden. Nach dem Einfädelvorgang wird die Absperreinrichtung 22 aktiviert und die Verbindung zwischen Druckluftquelle 20 und Injektorbohrung 32 wieder unterbrochen.For threading the thread, for example, manually withdrawn from the stationary supply spool up and held in front of the thread inlet pipe. The shut-off
Durch die erfindungsgemäße Ausbildung der Doppeldraht-Zwirnspindel lässt sich der Luftdruck der Druckluftquelle 20 im Vergleich zu einer bekannten Ausbildung, wie sie die
Claims (11)
- Two-for-one twisting spindle having a pneumatically actuated threading device for a thread, with a spindle shaft (2) which can be rotated about its vertically arranged rotational axis and is partially configured as a hollow shaft and, in the lower part, has a feed bore (24) extending coaxially to the rotational axis, and with an injector element (16), which opens into a thread guide channel (18) of a thread guide ring (7) and which, during the threading process, can be temporarily connected by means of a compressed air feed to a compressed air source, a part (25) of the compressed air feed to the injector element being formed by the feed bore, characterised in that the compressed air feed comprises a connection element (27) with a curved air channel (26), which connects the feed bore (24) to the injector element (16) and in that the connection element (27) is configured as a separate component and the air channel (26) is adapted to the flow requirements.
- Two-for-one twisting spindle according to claim 1, characterised in that the air channel (26) has a continuously curved course.
- Two-for-one twisting spindle according to claim 1 or 2, characterised in that the air channel (26) has a semi-circular course.
- Two-for-one twisting spindle according to any one of the preceding claims, characterised in that the air channel (26) has a circular cross section.
- Two-for-one twisting spindle according to any one of the preceding claims, characterised in that the air channel (26) has a larger cross section at its inlet than at its outlet.
- Two-for-one twisting spindle according to claim 5, characterised in that the air channel (26) has a diameter of 4 mm at its inlet and a diameter of 3 mm at its outlet.
- Two-for-one twisting spindle according to claim 3, characterised in that the semi-circle, which is described by the air channel (26) with its centre line (37), has a radius of between 3 mm and 6 mm.
- Two-for-one twisting spindle according to any one of the preceding claims, characterised in that the spindle shaft (2) and the thread guide ring (7) have recesses, into which the connection element (27) can be inserted and the angle position of the thread guide ring (7) on the spindle shaft (2) can be adjusted and fixed by the inserted connection element (27).
- Two-for-one twisting spindle according to any one of the preceding claims, characterised in that the connection element (27) consists of two components which are rigidly connected to one another and are mirror-inverted with respect to one another.
- Two-for-one twisting spindle according to any one of the preceding claims, characterised in that the connection element (27) is produced from glass fibre-reinforced plastics material.
- Two-for-one twisting spindle according to any one of the preceding claims, characterised in that a sealing ring, with which the compressed air feed is sealed, is arranged in each case between the connection element (27) and the spindle shaft (2) as well as between the connection element (27) and the injector element (16).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006029055A DE102006029055A1 (en) | 2006-06-24 | 2006-06-24 | Double-twisting spindle with pneumatically operated threading device |
PCT/EP2007/004446 WO2007147468A1 (en) | 2006-06-24 | 2007-05-18 | Two-for-one twisting spindle having a pneumatically actuated threading device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2035606A1 EP2035606A1 (en) | 2009-03-18 |
EP2035606B1 true EP2035606B1 (en) | 2016-08-24 |
Family
ID=38330779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07725354.0A Active EP2035606B1 (en) | 2006-06-24 | 2007-05-18 | Two-for-one twisting spindle having a pneumatically actuated threading device |
Country Status (5)
Country | Link |
---|---|
US (1) | US7908839B2 (en) |
EP (1) | EP2035606B1 (en) |
CN (1) | CN101473077B (en) |
DE (1) | DE102006029055A1 (en) |
WO (1) | WO2007147468A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010013795A1 (en) | 2010-04-03 | 2011-10-06 | Oerlikon Textile Gmbh & Co. Kg | Two-for-one twisting spindle |
RU2608560C2 (en) | 2011-03-30 | 2017-01-23 | Филипс Лайтинг Холдинг Б.В. | End cap for tubular light source |
JP5850549B2 (en) | 2011-03-30 | 2016-02-03 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | End cap for tubular light source |
EP2948713B1 (en) | 2013-01-24 | 2017-09-13 | Philips Lighting Holding B.V. | End cap for a tubular light source |
CN103541069A (en) * | 2013-09-26 | 2014-01-29 | 吴江伊莱纺织科技有限公司 | Pneumatic threading spindle |
DE102014018038A1 (en) * | 2014-12-05 | 2016-06-09 | Saurer Germany Gmbh & Co. Kg | Multiple wire twisting spindle for twisting machines |
CN105671708B (en) * | 2016-04-18 | 2018-08-03 | 安徽日发纺织机械有限公司 | A kind of pneumatic spindle of electricity ingot |
CN106087144B (en) * | 2016-07-29 | 2018-07-24 | 浙江天竺纺机有限公司 | A kind of twister of yarn |
CN106367856B (en) * | 2016-11-17 | 2019-01-22 | 安徽日发纺织机械有限公司 | A kind of large package pneumatic entry two-for-one twisting spindles |
CN107299422B (en) * | 2017-07-07 | 2020-04-17 | 宜昌经纬纺机有限公司 | Carpet yarn twisting machine |
CN109137164A (en) * | 2018-11-14 | 2019-01-04 | 浙江东星纺织机械有限公司 | A kind of air-flow draws spindle |
Family Cites Families (10)
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 |
IT1111436B (en) * | 1977-03-04 | 1986-01-13 | Skf Cie Applic Mecanique | TWISTING SPINDLE |
DE2939702C2 (en) * | 1979-09-29 | 1982-08-12 | Palitex Project-Company Gmbh, 4150 Krefeld | Two-for-one twisting spindle with a stationary delivery spool carrier |
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 |
JPS5943403Y2 (en) * | 1982-12-28 | 1984-12-22 | 村田機械株式会社 | Tension device in double twisting machine |
DE4103286C2 (en) * | 1991-02-04 | 1993-10-28 | Palitex Project Co Gmbh | Double wire twist spindle |
DE19610460A1 (en) | 1996-03-16 | 1997-09-18 | Schaeffler Waelzlager Kg | Spindle for making a thread |
DE19955399C2 (en) * | 1999-11-18 | 2001-10-04 | Volkmann Gmbh | Cable and double wire twist spindle |
DE10250423A1 (en) | 2002-10-30 | 2004-05-19 | Volkmann Gmbh | Spindle bearing for a double wire twisting machine |
DE102004050180A1 (en) | 2004-10-14 | 2006-04-20 | Saurer Gmbh & Co. Kg | Double-twisting spindle with pneumatically operated threading device |
-
2006
- 2006-06-24 DE DE102006029055A patent/DE102006029055A1/en not_active Withdrawn
-
2007
- 2007-05-18 WO PCT/EP2007/004446 patent/WO2007147468A1/en active Application Filing
- 2007-05-18 US US12/308,826 patent/US7908839B2/en not_active Expired - Fee Related
- 2007-05-18 CN CN2007800226862A patent/CN101473077B/en not_active Expired - Fee Related
- 2007-05-18 EP EP07725354.0A patent/EP2035606B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN101473077B (en) | 2010-08-18 |
EP2035606A1 (en) | 2009-03-18 |
WO2007147468A1 (en) | 2007-12-27 |
CN101473077A (en) | 2009-07-01 |
US7908839B2 (en) | 2011-03-22 |
US20100018178A1 (en) | 2010-01-28 |
DE102006029055A1 (en) | 2007-12-27 |
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