EP0383960B1 - Two-for-one twister - Google Patents

Two-for-one twister Download PDF

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Publication number
EP0383960B1
EP0383960B1 EP89102813A EP89102813A EP0383960B1 EP 0383960 B1 EP0383960 B1 EP 0383960B1 EP 89102813 A EP89102813 A EP 89102813A EP 89102813 A EP89102813 A EP 89102813A EP 0383960 B1 EP0383960 B1 EP 0383960B1
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EP
European Patent Office
Prior art keywords
thread
ring
twisting machine
balloon limiter
space
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
EP89102813A
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German (de)
French (fr)
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EP0383960A1 (en
Inventor
Johannes Ing. Grad. Frentzel-Beyme
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Palitex Project Co GmbH
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Palitex Project Co GmbH
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 Palitex Project Co GmbH filed Critical Palitex Project Co GmbH
Priority to DE8989102813T priority Critical patent/DE58903236D1/en
Priority to EP89102813A priority patent/EP0383960B1/en
Priority to US07/467,049 priority patent/US4998405A/en
Priority to JP2027300A priority patent/JPH02242935A/en
Publication of EP0383960A1 publication Critical patent/EP0383960A1/en
Application granted granted Critical
Publication of EP0383960B1 publication Critical patent/EP0383960B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H15/00Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/007Piecing 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

Definitions

  • the invention relates to a double-wire twisting machine, the twisting spindles of which each have a pneumatic threading device arranged in the region of the spindle axis, by means of which the thread is sucked in by means of an injector action and by means of the compressed air jet upwards through the space between the bobbin case and the balloon limiter, and the one in the area above of the space between the bobbin and balloon limiter attachable pneumatic thread catcher is assigned to Collection and forwarding of the ejected thread.
  • the thread that shoots up when threading between the bobbin and the inner jacket of the balloon limiter must be caught and fed to the other parts of the device, it generally passing through a thread guide eyelet and an advance roller to a traversing thread guide and from there to a take-up spool is guided, which is usually driven by a coil drive roller.
  • a partially or completely automated way of operating the twisting spindles requires a positioned thread. This positioning relates to at least a partial area of the entire circumferential gap. Shortly above the balloon limiter, the threaded thread is then taken over, for example, by appropriately shaped suction nozzles. So that the mechanized threading process is fully functional, the rotor of the twisting spindle must be separated from the drive and then rotated so that the channel outlet on the thread storage disc corresponds to the suction nozzle arranged above the balloon limiter.
  • a double wire twisting machine of the type described in the preamble of claim 1 Type is described for example in DE-C-26 48 621.
  • a longitudinally slotted thread guide tube is arranged above the annular gap between the upper edge of the bobbin case and balloon limiter, in which the thread is introduced by means of a suction flow.
  • This thread guide tube is assigned further means for thread take-up and thread transfer.
  • Double-wire twisting machines are also known, in which the thread is led out of the spindle without the positioning of the spindle rotor at a predetermined point on the spindle circumference above the balloon limiter.
  • a device is described for example in DE-C-27 18 351 and DE-C-24 08 563.
  • an annular shaped piece is arranged on the underside of the turntable of the twisting spindle, which together with the turntable and the thread storage disk delimits an annular chamber which has an outlet opening opening into the gap between the bobbin pot and the balloon limiter.
  • Air guiding surfaces arranged within the shaped piece can either provide for a rotation of the turntable with an additional positioning effect or else for the direct thread line to the predetermined position on the twisting spindle.
  • the invention has for its object to provide a double wire twisting machine of the type initially specified in the preamble of claim 1 with simple structural means such that the thread inserted into the space between the bobbin case and the balloon limiter is caught above the upper annular gap of this space and defined in a defined one Position is brought without the turntable of the spindle must be positioned beforehand.
  • the basic idea of the invention is to arrange a thread catch ring on the upper annular gap of the space between the bobbin and the balloon limiter, which catches the shooting thread and leads it out of the area of the balloon limiter in a defined direction and holds it there.
  • the threaded and held thread can then be continued with other known means for winding the double-wire twisting machine.
  • the thread catching ring can be mobile or fixed to the double-wire twisting spindle.
  • FIG. 1 shows a double-wire twisting spindle which is arranged on a double-wire twisting machine, which is not shown in any more detail.
  • the double-wire twisting spindle has a whorl 1, a turntable 2 with thread storage disk 2.1 and a bobbin 3, in which a hollow mandrel 4 is arranged axially, onto which the bobbins G1 and G2 are placed, and which has a thread inlet tube 7 at its upper end .
  • an injector 5 is arranged in a manner known per se and not shown in detail in such a way that its suction end is connected to the thread inlet pipe 7, while the blowing end opens into a thread outlet channel 6 guided radially through the thread storage disk 2.1, the outlet end of which at the circumference of the thread storage disk 2.1 lies. Furthermore, an air supply channel 6 is connected to the injector 5 in a manner not shown, which is guided through the coil pot 2 on its outer circumference for connection to a compressed air source.
  • the coil pot 3 is surrounded in a known manner by a balloon limiter 8.
  • the threads F1 and F2 are drawn off from the two bobbins G1 and G2, inserted through the thread inlet pipe 7 by means of the injector 5 and led out of the thread outlet channel 6 again. They are then led by the rising air flow through the space between the coil pot 3 and the balloon limiter 8 and finally reach the upper annular gap 8.1, where they are to be collected and positioned.
  • a thread catch ring 9 On the upper edge 8.2 of the balloon limiter 8 is a thread catch ring 9 with its underside in the area the outer circumference 9.1 placed.
  • This thread catch ring 9 can be part of a handling device (not shown further), with the aid of which the threads can then be applied to the further devices of the double-wire twisting machine.
  • the thread catching ring 9 has a closed ring channel 10, with an essentially circular cross section, which has a passage slot 10.1 on its side facing the ring gap 8.1, which slit into another open, likewise ring-shaped entry slot 11 that widens in a funnel shape towards the ring gap 8.1 flows.
  • the ring channel 10 is connected to a radially arranged connecting piece 12 which can be connected via a connecting line 13 to a vacuum source, not shown.
  • the annular channel 10 is designed such that its cross section, starting from the connecting piece 12, extends in both directions along the circumference of the ring down to a diametrically opposite point of the connecting piece 12.
  • the two threads F1 and F2 drawn off from the thread spools G1 and G2 are threaded by means of the injector 5 through the thread inlet tube 7 into the hollow mandrel 4, which they have below through the outlet opening on the circumference of the storage disk 2.1 leave.
  • the ring channel 10 is placed under negative pressure, so that the threads F1 and F2, which are guided upwards in the space between the balloon limiter 8 and the bobbin pot 3, are sucked into the ring channel 10 through the inlet slot 11 and the passage slot 10.1 (arrow direction E).
  • the threads are passed on (arrow direction W) and finally reach the connecting piece 12.
  • Both the injector 5 and the vacuum source connected to the connecting line 13 are now switched off.
  • the thread ends F1 and F2 are positioned in the connecting piece 12 and can be gripped by hand or a corresponding device after removing the thread catch ring 9 in the manner described below (FIGS. 5 and 6).
  • the thread catching ring can also be arranged firmly on the balloon limiter.
  • the ring channel must have a cross section that opens towards the inside of the ring, and the thread ends are grasped and conveyed by means of a suction nozzle.
  • the embodiment according to FIG. 5 shows the twisting point of a double-wire twisting machine 14.
  • the thread-catching ring 9 is designed as a handling device and is placed manually on the balloon limiter 8 of the double-wire twisting spindle by an operator P.
  • the thread catch ring 9 is connected via the connecting piece 12 to a pressure hose 13 leading to the vacuum source (not shown). After positioning the thread ends F1 and F2 in the connecting piece 12 of the thread catching ring 9, this is again manually removed and the thread ends F1 and F2 are pulled out of the connecting piece 12. They can then be fed by hand in a manner known per se through a thread guide eyelet 15 to the schematically indicated winding device 16 of the double-wire twisting machine 14.
  • Fig. 6 shows part of a double-wire twisting machine 14 'with a thread-catching device in which the thread-catching ring 9 with its connecting piece 12 is connected via a line 13 designed as a linkage' to a control unit 17 which can be moved along the double-wire twisting machine.
  • the line 13 ' is connected via a connecting hose 17.2 to a vacuum source arranged in the operating unit 17.
  • the linkage 13 ' is connected to an extendable articulated arm 17.1.
  • the thread catch ring 9 is shown in solid lines in the position placed on the upper edge of the balloon limiter 8. From this position it can be pivoted into a raised position indicated by dashed lines by means of the articulated lever arm 17.1.
  • the thread that is threaded through is collected and introduced into the connecting piece 12.
  • the thread catch ring 9 including the feed lines is then pivoted upwards and additionally moved in the direction of the bobbin frame of the winding device 16 '.
  • the guide plane of the thread catching ring 9 with the sucked-in thread ends is chosen so that the two thread ends during the final pivoting movement between the bobbin tube 16.1 ' and centering plate 16.2 'of the winding device 16' are clamped. After resetting the self-threading balloon thread guide 15 'the thread can start again.
  • Fig. 7 an embodiment of a thread catching device is shown, in which the thread catching ring 9 'is arranged stationary and is firmly connected to the balloon limiter 8.
  • the thread catch ring 9 ' is somewhat different in that the ring channel 10' via the inlet slot 11 'does not open downwards, but to the inside of the thread catch ring 9'.
  • the thread catch ring 9 is placed with its underside in the area of the inner circumference 9.2 '.
  • the thread ends F1 and F2 are caught in the manner already described by the thread catching ring 9 'and passed on in the ring channel 10' into the connecting piece 12 '.
  • the generation of the negative pressure in the annular channel 10 ' takes place in this embodiment by an injector 18 arranged in the connecting piece 12', the lateral connecting piece 12.1 'is connected to the vacuum source, not shown.
  • the special design of the thread catch ring 9 ' ensures that the annular gap 8.1 for the suction nozzle 20 even when the thread catch ring is attached 9 'is accessible. In this way, the thread ends F1 and F2 can be conveyed without removing the thread catch ring 9 '.
  • the suction port 20 is part of a conveyor device, not shown. It can be moved from the position shown in solid lines in FIG. 7 to elevated positions, one of which is indicated by dashed lines. The thread ends can then be clamped between the sleeve and centering plate of the winding device, not shown, for example in the manner described with reference to FIG. 6.
  • this device for further conveying the thread ends can be designed in a known manner, for example, as described in DE-C 24 26 724 or DE-C 26 48 621. So that a fitted thread length is guided into the winding area, a cutting device 19 is provided on the connecting piece 12 ', which cuts the thread ends. It has a cutting tool 19.2 which can be actuated via a compressed air cylinder 19.1. The cutting process is initiated when the injector 18 reports that the two thread ends have been taken over.
  • Such a cutting device can of course also be provided in the embodiment described with reference to FIG. 6.

Description

Die Erfindung betrifft eine Doppeldraht-Zwirnmaschine, deren Zwirnspindeln jeweils eine im Bereich der Spindelachse angeordnete pneumatische Einfädelvorrichtung aufweisen, durch welche der Faden mittels Injektorwirkung angesaugt und mittels des Druckluftstrahls nach oben durch den Zwischenraum zwischen Spulentopf und Ballonbegrenzer ausgestoßen wird, und der eine im Bereich oberhalb des Zwischenraums zwischen Spulentopf und Ballonbegrenzer anbringbare pneumatische Fadenfangeinrichtung zugeordnet ist zum Auffangen und Weiterleiten des ausgestoßenen Fadens.The invention relates to a double-wire twisting machine, the twisting spindles of which each have a pneumatic threading device arranged in the region of the spindle axis, by means of which the thread is sucked in by means of an injector action and by means of the compressed air jet upwards through the space between the bobbin case and the balloon limiter, and the one in the area above of the space between the bobbin and balloon limiter attachable pneumatic thread catcher is assigned to Collection and forwarding of the ejected thread.

Bei einer Doppeldraht-Zwirnmaschine der oben angegebenen Bauart muß der beim Einfädeln zwischen Spulentopf und Innenmantel des Ballonbegrenzers hochschießende Faden aufgefangen und den weiteren Teilen der Vorrichtung zugeführt werden, wobei er im allgemeinen durch eine Fadenführeröse und eine Voreilrolle zu einem Changierfadenführer und von dort zu einer Aufwickelspule geführt wird, die in der Regel von einer Spulenantriebswalze angetrieben wird.In the case of a double-wire twisting machine of the type specified above, the thread that shoots up when threading between the bobbin and the inner jacket of the balloon limiter must be caught and fed to the other parts of the device, it generally passing through a thread guide eyelet and an advance roller to a traversing thread guide and from there to a take-up spool is guided, which is usually driven by a coil drive roller.

Bei manuell bedienten Spindeln ist es im allgemeinen nicht schwer, den Faden am Ringspalt am oberen Ende des Zwischenraums zwischen Spulentopf und Ballonbegrenzer mit der Hand nach visueller Erkennung der Position am Umfang aufzufangen und weiterhin anzulegen.In the case of manually operated spindles, it is generally not difficult to catch the thread at the annular gap at the upper end of the space between the bobbin pot and the balloon limiter by hand after visually recognizing the position on the circumference and to continue to put it on.

Eine teilweise oder ganz automatisierte Arbeitsweise bei der Bedienung der Zwirnspindeln verlangt jedoch einen positionierten Faden. Diese Positionierung bezieht sich auf mindestens einen Teilbereich des gesamten Ringspaltumfanges. Kurz oberhalb des Ballonbegrenzers wird der durchgefädelte Faden dann beispielsweise von entsprechend geformten Saugdüsen übernommen. Damit der mechanisierte Einfädelvorgang voll funktionsfähig ist, muß der Rotor der Zwirnspindel vom Antrieb abgetrennt und anschließend so verdreht werden, daß der Kanalaustritt an der Fadenspeicherscheibe mit der oberhalb des Ballonbegrenzers angeordneten Saugdüse korrespondiert.However, a partially or completely automated way of operating the twisting spindles requires a positioned thread. This positioning relates to at least a partial area of the entire circumferential gap. Shortly above the balloon limiter, the threaded thread is then taken over, for example, by appropriately shaped suction nozzles. So that the mechanized threading process is fully functional, the rotor of the twisting spindle must be separated from the drive and then rotated so that the channel outlet on the thread storage disc corresponds to the suction nozzle arranged above the balloon limiter.

Eine Doppeldraht-Zwirnmaschine der eingangs und im Oberbegriff des Patentanspruchs 1 beschriebenen Bauart ist beispielsweise in der DE-C-26 48 621 beschrieben. Bei dieser bekannten Maschine ist oberhalb des Ringspaltes zwischen dem oberen Rand von Spulentopf und Ballonbegrenzer ein längs geschlitztes Fadenführungsrohr angeordnet, in dem mittels eines Saugstromes der Faden eingeführt wird. Diesem Fadenführungsrohr sind weitere Mittel für die Fadenmitnahme und Fadenübergabe zugeordnet.A double wire twisting machine of the type described in the preamble of claim 1 Type is described for example in DE-C-26 48 621. In this known machine, a longitudinally slotted thread guide tube is arranged above the annular gap between the upper edge of the bobbin case and balloon limiter, in which the thread is introduced by means of a suction flow. This thread guide tube is assigned further means for thread take-up and thread transfer.

Andere Doppeldraht-Zwirnmaschinen dieser Bauart sind beispielsweise in der DE-B-20 65 140 beschrieben.Other double-wire twisting machines of this type are described, for example, in DE-B-20 65 140.

Es sind auch Doppeldraht-Zwirnmaschinen bekannt, bei denen der Faden ohne die Positionierung des Spindelrotors an vorbestimmter Stelle des Spindelumfangs oberhalb des Ballonbegrenzers aus der Spindel herausgeführt wird. Eine derartige Vorrichtung ist beispielsweise in der DE-C-27 18 351 und der DE-C-24 08 563 beschrieben. Bei diesen bekannten Einrichtungen wird an der Unterseite des Drehtellers der Zwirnspindel ein ringförmiges Formstück angeordnet, das zusammen mit dem Drehteller und der Fadenspeicherscheibe eine ringförmige Kammer begrenzt, die eine in den Spalt zwischen dem Spulentopf und dem Ballonbegrenzer ausmündende Austrittsöffnung aufweist. Dabei können innerhalb des Formstücks angeordnete Luftleitflächen entweder für eine Verdrehung des Drehtellers mit zusätzlichem Positioniereffekt oder aber für die direkte Fadenleitung in die vorbestimmte Position an der Zwirnspindel sorgen.Double-wire twisting machines are also known, in which the thread is led out of the spindle without the positioning of the spindle rotor at a predetermined point on the spindle circumference above the balloon limiter. Such a device is described for example in DE-C-27 18 351 and DE-C-24 08 563. In these known devices, an annular shaped piece is arranged on the underside of the turntable of the twisting spindle, which together with the turntable and the thread storage disk delimits an annular chamber which has an outlet opening opening into the gap between the bobbin pot and the balloon limiter. Air guiding surfaces arranged within the shaped piece can either provide for a rotation of the turntable with an additional positioning effect or else for the direct thread line to the predetermined position on the twisting spindle.

Die bisher bekannten Vorrichtungen haben sich als sehr aufwendig und nicht ausreichend betriebssicher erwiesen. Die notwendigen Einzelvorrichtungen müssen entweder an jeder Zwirnstelle vorgesehen werden oder einem Handhabungsgerät zugeordnet werden, wobei sich auch letzteres als konstruktiv aufwendig erwiesen hat, weil die Spindelpositionierung und die Mittel für das positionierte Hochschießen des durchzufädelnden Fadens in einer Einrichtung vereint sein müssen.The previously known devices have proven to be very complex and not sufficiently reliable. The necessary individual devices must either be provided at each twisting point or be assigned to a handling device, the latter also proving to be structurally complex because the spindle positioning and the means for the positioned shoot-up of the thread to be threaded must be combined in one device.

Der Erfindung liegt die Aufgabe zugrunde, eine Doppeldraht-Zwirnmaschine der eingangs und im Oberbegriff des Patentanspruchs 1 angegebenen Bauart mit einfachen konstruktiven Mitteln so auszubilden, daß der in den Zwischenraum zwischen Spulentopf und Ballonbegrenzer eingeführte Faden oberhalb des oberen Ringspaltes dieses Zwischenraumes aufgefangen und in eine definierte Lage gebracht wird, ohne daß der Drehteller der Spindel vorher positioniert werden muß.The invention has for its object to provide a double wire twisting machine of the type initially specified in the preamble of claim 1 with simple structural means such that the thread inserted into the space between the bobbin case and the balloon limiter is caught above the upper annular gap of this space and defined in a defined one Position is brought without the turntable of the spindle must be positioned beforehand.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den Merkmalen aus dem kennzeichnenden Teil des Patentanspruchs 1.This object is achieved according to the invention with the features from the characterizing part of patent claim 1.

Vorteilhafte Weiterbildungen der erfindungsgemäßen Doppeldraht-Zwirnmaschine sind in den Unteransprüchen beschrieben.Advantageous developments of the double-wire twisting machine according to the invention are described in the subclaims.

Der Grundgedanke der Erfindung besteht darin, beim Einfädeln jeweils auf dem oberen Ringspalt des Zwischenraums zwischen Spulentopf und Ballonbegrenzer einen Fadenfangring anzuordnen, der den hochschießenden Faden auffängt und in einer definierten Richtung aus dem Bereich des Ballonbegrenzers herausführt und dort festhält. Der durchgefädelte und festgehaltene Faden kann dann mit weiteren bekannten Mitteln zum Aufspulteil der Doppeldraht-Zwirnmaschine weitergeführt werden. Wie weiter unten anhand von Ausführungsbeispielen näher erläutert, kann dabei der Fadenfangring mobil oder fest mit der Doppeldraht-Zwirnspindel verbunden sein.The basic idea of the invention is to arrange a thread catch ring on the upper annular gap of the space between the bobbin and the balloon limiter, which catches the shooting thread and leads it out of the area of the balloon limiter in a defined direction and holds it there. The threaded and held thread can then be continued with other known means for winding the double-wire twisting machine. As below using exemplary embodiments explained in more detail, the thread catching ring can be mobile or fixed to the double-wire twisting spindle.

Im folgenden wird anhand der beigefügten Zeichnungen ein Ausführungsbeispiel der erfindungsgemäßen Doppeldraht-Zwirnmaschine näher erläutert. In den Zeichnungen zeigen:

Fig. 1
in perpektivischer, teilweise geschnittener Darstellung eine Doppeldraht-Zwirnspindel mit durchgefädelten Fäden;
Fig. 2
in einer teilweise geschnittenen Seitenansicht die Doppeldraht-Zwirnspindel nach Fig. 1 mit aufgesetztem Fadenfangring;
Fig. 3
im Vertikalschnitt den Fadenfangring gemäß Fig. 2;
Fig. 4
einen Schnitt nach der Linie IV-IV in Fig. 3;
Fig. 5
in perspektivischer Darstellung eine Teilansicht einer Doppeldraht-Zwirnmaschine mit einem an einem Handhabungsgerät angeordneten Fadenfangring;
Fig. 6
in perspektivischer Darstellung eine Teilansicht einer Doppeldraht-Zwirnmaschine mit einem an einer Bedienungseinheit angeordneten Fadenfangring;
Fig. 7
in perspektivischer, teilweise geschnittener Darstellung eine Doppeldraht-Zwirnspindel mit einem festinstallierten Fadenfangring und einer Einrichtung zur Weiterförderung des Fadens.
An exemplary embodiment of the double-wire twisting machine according to the invention is explained in more detail below with reference to the accompanying drawings. The drawings show:
Fig. 1
in perspective, partially sectioned, a double-wire twisting spindle with threads threaded through;
Fig. 2
in a partially sectioned side view of the double-wire twisting spindle according to FIG. 1 with the thread catching ring attached;
Fig. 3
in vertical section the thread catch ring according to FIG. 2;
Fig. 4
a section along the line IV-IV in Fig. 3;
Fig. 5
a perspective view of a partial view of a double-wire twisting machine with a thread catch ring arranged on a handling device;
Fig. 6
a perspective view of a partial view of a double wire twisting machine with a thread catch ring arranged on an operating unit;
Fig. 7
a perspective, partially sectioned representation of a double-wire twisting spindle with a permanently installed thread catch ring and a device for further conveying the thread.

Figur 1 zeigt eine Doppeldraht-Zwirnspindel, die an einer, im übrigen nicht weiter dargestellten, Doppeldraht-Zwirnmaschine angeordnet ist. In bekannter Weise besitzt die Doppeldraht-Zwirnspindel einen Wirtel 1, einen Drehteller 2 mit Fadenspeicherscheibe 2.1 und einen Spulentopf 3, in dem axial ein Hohldorn 4 angeordnet ist, auf den die Garnspulen G1 und G2 aufgesteckt werden, und der an seinem oberen Ende ein Fadeneinlaufrohr 7 besitzt. Im Hohldorn 4 ist ein Injektor 5 in an sich bekannter und nicht genauer dargestellter Weise so angeordnet, daß sein Saugende an das Fadeneinlaufrohr 7 angeschlossen ist, während das Blasende in eine radial durch die Fadenspeicherscheibe 2.1 geführten Fadenaustrittskanal 6 mündet, dessen Austrittsende am Umfang der Fadenspeicherscheibe 2.1 liegt. Weiterhin ist an den Injektor 5 in nicht dargestellter Weise ein Luftzuführungskanal 6 angeschlossen, der durch den Spulentopf 2 an dessen Außenumfang zum Anschluß an eine Druckluftquelle geführt ist.FIG. 1 shows a double-wire twisting spindle which is arranged on a double-wire twisting machine, which is not shown in any more detail. In known The double-wire twisting spindle has a whorl 1, a turntable 2 with thread storage disk 2.1 and a bobbin 3, in which a hollow mandrel 4 is arranged axially, onto which the bobbins G1 and G2 are placed, and which has a thread inlet tube 7 at its upper end . In the hollow mandrel 4, an injector 5 is arranged in a manner known per se and not shown in detail in such a way that its suction end is connected to the thread inlet pipe 7, while the blowing end opens into a thread outlet channel 6 guided radially through the thread storage disk 2.1, the outlet end of which at the circumference of the thread storage disk 2.1 lies. Furthermore, an air supply channel 6 is connected to the injector 5 in a manner not shown, which is guided through the coil pot 2 on its outer circumference for connection to a compressed air source.

Der Spulentopf 3 ist in bekannter Weise von einem Ballonbegrenzer 8 umgeben. Die Fäden F1 und F2 werden von den beiden Garnspulen G1 und G2 abgezogen, mittels des Injektors 5 durch das Fadeneinlaufrohr 7 eingeführt und aus dem Fadenaustrittskanal 6 wieder herausgeführt. Sie werden dann durch den aufsteigenden Luftstrom durch den Zwischenraum zwischen dem Spulentopf 3 und dem Ballonbegrenzer 8 hindurchgeführt und gelangen schließlich an den oberen Ringspalt 8.1, wo sie aufgefangen und positioniert werden sollen.The coil pot 3 is surrounded in a known manner by a balloon limiter 8. The threads F1 and F2 are drawn off from the two bobbins G1 and G2, inserted through the thread inlet pipe 7 by means of the injector 5 and led out of the thread outlet channel 6 again. They are then led by the rising air flow through the space between the coil pot 3 and the balloon limiter 8 and finally reach the upper annular gap 8.1, where they are to be collected and positioned.

Dies geschieht mittels einer Vorrichtung, die anhand der Figuren 2 bis 4 beschrieben wird.This is done by means of a device which is described with reference to Figures 2 to 4.

Auf den oberen Rand 8.2 des Ballonbegrenzers 8 ist ein Fadenfangring 9 mit seiner Unterseite im Bereich des äußeren Umfangs 9.1 aufgesetzt. Dieser Fadenfangring 9 kann Teil einer nicht weiter dargestellten Handhabungsvorrichtung sein, mit deren Hilfe dann die Fäden an die weiteren Vorrichtungen der Doppeldraht-Zwirnmaschine angelegt werden können.On the upper edge 8.2 of the balloon limiter 8 is a thread catch ring 9 with its underside in the area the outer circumference 9.1 placed. This thread catch ring 9 can be part of a handling device (not shown further), with the aid of which the threads can then be applied to the further devices of the double-wire twisting machine.

Der Fadenfangring 9 besitzt im Inneren einen geschlossenen Ringkanal 10, mit im wesentlichen kreisförmigem Querschnitt, der an seiner dem Ringspalt 8.1 zugewandten Seite einen Durchtrittsschlitz 10.1 besitzt, der in einen weiteren, sich nach unten zum Ringspalt 8.1 hin trichterförmig erweiternden offenen, ebenfalls ringförmigen Eintrittsschlitz 11 mündet. Der Ringkanal 10 ist an einen radial angeordneten Anschlußstutzen 12 angeschlossen, der über eine Verbindungsleitung 13 an eine nicht dargestellte Unterdruckquelle anschließbar ist. Um zu erreichen, daß an allen Stellen des Umfangs des Ringspaltes 8.1 im wesentlichen die gleiche Saugkraft auftritt, ist wie aus den Fig. 3 und 4 ersichtlich der Ringkanal 10 so ausgebildet, daß sich sein Querschnitt ausgehend vom Anschlußstutzen 12 längs des Ringumfangs in beiden Richtungen bis zu einer dem Anschlußstutzen 12 diametral gegenüberliegenden Stelle verkleinert.The thread catching ring 9 has a closed ring channel 10, with an essentially circular cross section, which has a passage slot 10.1 on its side facing the ring gap 8.1, which slit into another open, likewise ring-shaped entry slot 11 that widens in a funnel shape towards the ring gap 8.1 flows. The ring channel 10 is connected to a radially arranged connecting piece 12 which can be connected via a connecting line 13 to a vacuum source, not shown. In order to ensure that essentially the same suction force occurs at all points on the circumference of the annular gap 8.1, as can be seen from FIGS. 3 and 4, the annular channel 10 is designed such that its cross section, starting from the connecting piece 12, extends in both directions along the circumference of the ring down to a diametrically opposite point of the connecting piece 12.

Die Funktionsweise der dargestellten Vorrichtung ist folgende.The operation of the device shown is as follows.

Nachdem der Fadenfangring 9 auf den Ballonbegrenzer 8 aufgesetzt ist, werden die beiden von den Garnspulen G1 und G2 abgezogenen Fäden F1 und F2 mittels des Injektors 5 durch das Fadeneinlaufrohr 7 in den Hohldorn 4 eingefädelt, den sie unten durch die Austrittsöffnung am Umfang der Speicherscheibe 2.1 verlassen. Über die Verbindungsleitung 13 und den Anschlußstutzen 12 wird der Ringkanal 10 unter Unterdruck gesetzt, so daß die im Zwischenraum zwischen Ballonbegrenzer 8 und Spulentopf 3 nach oben geführten Fäden F1 und F2 durch den Eintrittsschlitz 11 und den Durchtrittsschlitz 10.1 in den Ringkanal 10 eingesaugt werden (Pfeilrichtung E). Im Ringkanal 10 werden die Fäden weitergeleitet (Pfeilrichtung W) und gelangen schließlich in den Anschlußstutzen 12. Es werden nun sowohl der Injektor 5 als auch die an die Verbindungsleitung 13 angeschlossene Unterdruckquelle abgeschaltet. Die Fadenenden F1 und F2 sind im Anschlußstutzen 12 positioniert und können nach Abnehmen des Fadenfangringes 9 in unten beschriebener Weise (Fig. 5 und 6) von Hand oder einer entsprechenden Einrichtung erfaßt werden. Wie weiterhin unten beschrieben (Fig. 7) kann der Fadenfangring auch fest auf dem Ballonbegrenzer angeordnet sein. In diesem Falle muß der Ringkanal einen sich zur Ringinnenseite hin öffnenden Querschnitt besitzen, und die Fadenenden werden mittels eines Saugstutzens erfaßt und weitergefördert.After the thread catching ring 9 is placed on the balloon limiter 8, the two threads F1 and F2 drawn off from the thread spools G1 and G2 are threaded by means of the injector 5 through the thread inlet tube 7 into the hollow mandrel 4, which they have below through the outlet opening on the circumference of the storage disk 2.1 leave. Via the connecting line 13 and Connection piece 12, the ring channel 10 is placed under negative pressure, so that the threads F1 and F2, which are guided upwards in the space between the balloon limiter 8 and the bobbin pot 3, are sucked into the ring channel 10 through the inlet slot 11 and the passage slot 10.1 (arrow direction E). In the ring channel 10, the threads are passed on (arrow direction W) and finally reach the connecting piece 12. Both the injector 5 and the vacuum source connected to the connecting line 13 are now switched off. The thread ends F1 and F2 are positioned in the connecting piece 12 and can be gripped by hand or a corresponding device after removing the thread catch ring 9 in the manner described below (FIGS. 5 and 6). As further described below (FIG. 7), the thread catching ring can also be arranged firmly on the balloon limiter. In this case, the ring channel must have a cross section that opens towards the inside of the ring, and the thread ends are grasped and conveyed by means of a suction nozzle.

Im folgenden werden anhand der Figuren 5 bis 7 ver schiedene Ausführungsformen einer einer Doppeldraht-Zwirnmaschine zugeordneten Fadenfangeinrichtung beschrieben.Various embodiments of a thread catching device assigned to a double-wire twisting machine are described below with reference to FIGS. 5 to 7.

Die Ausführungsform nach Fig. 5 zeigt die Zwirnstelle einer Doppeldraht-Zwirnmaschine 14. Der Fadenfangring 9 ist als Handhabungsgerät ausgebildet und wird von einer Bedienungsperson P manuell auf den Ballonbegrenzer 8 der Doppeldraht-Zwirnspindel aufgesetzt. Über den Anschlußstutzen 12 ist der Fadenfangring 9 mit einem zur nicht dargestellten Unterdruckquelle führenden Druckschlauch 13 verbunden. Nach dem Positionieren der Fadenenden F1 und F2 im Anschlußstutzen 12 des Fadenfangrings 9 wird dieser wiederum manuell abgenommen und die Fadenenden F1 und F2 werden aus dem Anschlußstutzen 12 herausgezogen. Sie können dann von Hand in einer an sich bekannten Weise durch eine Fadenführeröse 15 der schematisch angedeuteten Aufwickelvorrichtung 16 der Doppeldraht-Zwirnmaschine 14 zugeführt werden.The embodiment according to FIG. 5 shows the twisting point of a double-wire twisting machine 14. The thread-catching ring 9 is designed as a handling device and is placed manually on the balloon limiter 8 of the double-wire twisting spindle by an operator P. The thread catch ring 9 is connected via the connecting piece 12 to a pressure hose 13 leading to the vacuum source (not shown). After positioning the thread ends F1 and F2 in the connecting piece 12 of the thread catching ring 9, this is again manually removed and the thread ends F1 and F2 are pulled out of the connecting piece 12. They can then be fed by hand in a manner known per se through a thread guide eyelet 15 to the schematically indicated winding device 16 of the double-wire twisting machine 14.

Fig. 6 zeigt einen Teil einer Doppeldraht-Zwirnmaschine 14′ mit einer Fadenfangeinrichtung, bei der der Fadenfangring 9 mit seinem Anschlußstutzen 12 über eine als Gestänge ausgebildete Leitung 13′ mit einer längs der Doppeldraht-Zwirnmaschine verfahrbaren Bedienungseinheit 17 verbunden ist. Die Leitung 13′ ist über einen Anschlußschlauch 17.2 mit einer in der Bedienungseinheit 17 angeordneten Unterdruckquelle verbunden. Das Gestänge 13′ ist mit einem ausfahrbaren Knickhebelarm 17.1 verbunden. In Fig. 6 ist mit ausgezogenen Linien der Fadenfangring 9 in der auf den oberen Rand des Ballonbegrenzers 8 aufgesetzten Stellung dargestellt. Aus dieser Stellung kann er mittels des Knickhebelarms 17.1 in eine gestrichelt angedeutete, angehobene Stellung verschwenkt werden. Nach dem Aufsetzen des Fadenfangringes 9 wird der durchgefädelte Faden, wie bereits beschrieben, aufgefangen und in den Anschlußstutzen 12 hineingeführt. Von der Bedienungseinheit 17 aus wird dann der Fadenfangring 9 einschließlich der Zuleitungen aufwärts verschwenkt und zusätzlich in Richtung auf den Spulenrahmen der Aufwickelvorrichtung 16′ bewegt. Dabei wird die Führungsebene des Fadenfangringes 9 mit den eingesaugten Fadenenden so gewählt, daß die beiden Fadenenden bei der endgültigen Verschwenkbewegung zwischen Spulenhülse 16.1′ und Zentrierteller 16.2′ der Aufwickelvorrichtung 16′ eingeklemmt werden. Nach Rückstellung des selbst einfädelnden Ballonfadenführers 15′ kann die Zwirnstelle wieder anlaufen.Fig. 6 shows part of a double-wire twisting machine 14 'with a thread-catching device in which the thread-catching ring 9 with its connecting piece 12 is connected via a line 13 designed as a linkage' to a control unit 17 which can be moved along the double-wire twisting machine. The line 13 'is connected via a connecting hose 17.2 to a vacuum source arranged in the operating unit 17. The linkage 13 'is connected to an extendable articulated arm 17.1. In Fig. 6, the thread catch ring 9 is shown in solid lines in the position placed on the upper edge of the balloon limiter 8. From this position it can be pivoted into a raised position indicated by dashed lines by means of the articulated lever arm 17.1. After the thread catching ring 9 has been put on, the thread that is threaded through, as already described, is collected and introduced into the connecting piece 12. From the operating unit 17, the thread catch ring 9 including the feed lines is then pivoted upwards and additionally moved in the direction of the bobbin frame of the winding device 16 '. The guide plane of the thread catching ring 9 with the sucked-in thread ends is chosen so that the two thread ends during the final pivoting movement between the bobbin tube 16.1 ' and centering plate 16.2 'of the winding device 16' are clamped. After resetting the self-threading balloon thread guide 15 'the thread can start again.

In Fig. 7 ist eine Ausführungsform einer Fadenfangeinrichtung dargestellt, bei der der Fadenfangring 9′ stationär angeordnet und mit dem Ballonbegrenzer 8 fest verbunden ist. Bei dieser Ausführungsform ist der Fadenfangring 9′ insofern etwas anders ausgebildet, als sich der Ringkanal 10′ über den Eintrittsschlitz 11′ nicht nach unten, sondern zur Innenseite des Fadenfangrings 9′ hin öffnet. Wie aus Fig. 7 abzulesen ist, ist der Fadenfangring 9 mit seiner Unterseite im Bereich des inneren Umfangs 9.2′ aufgesetzt. Auch bei dieser Ausführungsform werden die Fadenenden F1 und F2 in der bereits beschriebenen Weise vom Fadenfangring 9′ aufgefangen und im Ringkanal 10′ weitergeleitet bis in den Anschlußstutzen 12′. Die Erzeugung des Unterdrucks im Ringkanal 10′ erfolgt bei dieser Ausführungsform durch einen, im Anschlußstutzen 12′ angeordneten Injektor 18, dessen seitlicher Anschlußstutzen 12.1′ mit der nicht dargestellten Unterdruckquelle verbunden ist.In Fig. 7 an embodiment of a thread catching device is shown, in which the thread catching ring 9 'is arranged stationary and is firmly connected to the balloon limiter 8. In this embodiment, the thread catch ring 9 'is somewhat different in that the ring channel 10' via the inlet slot 11 'does not open downwards, but to the inside of the thread catch ring 9'. As can be seen from Fig. 7, the thread catch ring 9 is placed with its underside in the area of the inner circumference 9.2 '. In this embodiment too, the thread ends F1 and F2 are caught in the manner already described by the thread catching ring 9 'and passed on in the ring channel 10' into the connecting piece 12 '. The generation of the negative pressure in the annular channel 10 'takes place in this embodiment by an injector 18 arranged in the connecting piece 12', the lateral connecting piece 12.1 'is connected to the vacuum source, not shown.

Die Weiterförderung der Fadenenden F1 und F2 in den nicht dargestellten Auflaufbereich der Doppeldraht-Zwirnmaschine übernimmt ein Saugstutzen 20, der ebenfalls an eine nicht dargestellte Unterdruckquelle angeschlossen ist und dessen trichterförmige Ansaugöffnung an der Ringinnenseite im Bereich des Anschlußstutzens 12′ angeordnet ist. Durch die besondere Ausbildung des Fadenfangrings 9′ ist, wie ersichtlich, sichergestellt, daß der Ringspalt 8.1 für den Saugstutzen 20 auch bei aufgesetztem Fadenfangring 9′ zugänglich ist. Auf diese Weise können ohne Abnahme des Fadenfangrings 9′ die Fadenenden F1 und F2 weitergefördert werden. Der Saugstutzen 20 ist Teil einer nicht näher dargestellten Fördervorrichtung. Er kann aus der in Fig. 7 mit ausgezogenen Linien dargestellten Stellung in erhöhte Stellungen gebracht werden, von denen eine gestrichelt angedeutet ist. Die Fadenenden können dann beispielsweise in der anhand von Fig. 6 beschriebenen Weise zwischen Hülse und Zentrierteller der nicht dargestellten Aufwickelvorrichtung eingeklemmt werden.The further advancement of the thread ends F1 and F2 in the run-up area of the double-wire twisting machine, not shown, takes over a suction port 20, which is also connected to a vacuum source, not shown, and whose funnel-shaped suction opening is arranged on the inside of the ring in the area of the connection port 12 '. The special design of the thread catch ring 9 ', as can be seen, ensures that the annular gap 8.1 for the suction nozzle 20 even when the thread catch ring is attached 9 'is accessible. In this way, the thread ends F1 and F2 can be conveyed without removing the thread catch ring 9 '. The suction port 20 is part of a conveyor device, not shown. It can be moved from the position shown in solid lines in FIG. 7 to elevated positions, one of which is indicated by dashed lines. The thread ends can then be clamped between the sleeve and centering plate of the winding device, not shown, for example in the manner described with reference to FIG. 6.

Insgesamt kann diese Vorrichtung zur Weiterförderung der Fadenenden in bekannter Weise beispielsweise so ausgebildet sein wie in DE-C 24 26 724 oder DE-C 26 48 621 beschrieben. Damit eine abgepaßte Fadenlänge in den Aufspulbereich geführt wird ist am Anschlußstutzen 12′ eine Schneideinrichtung 19 vorgesehen, die die Fadenenden kappt. Sie besitzt ein über einen Druckluftzylinder 19.1 betätigbares Schneidwerkzeug 19.2. Der Schneidvorgang wird dann eingeleitet, wenn vom Injektor 18 die Übernahme der beiden Fadenenden rückgemeldet wird.Overall, this device for further conveying the thread ends can be designed in a known manner, for example, as described in DE-C 24 26 724 or DE-C 26 48 621. So that a fitted thread length is guided into the winding area, a cutting device 19 is provided on the connecting piece 12 ', which cuts the thread ends. It has a cutting tool 19.2 which can be actuated via a compressed air cylinder 19.1. The cutting process is initiated when the injector 18 reports that the two thread ends have been taken over.

Selbstverständlich kann eine derartige Schneideinrichtung auch bei der anhand von Fig. 6 beschriebenen Ausführungsform vorgesehen sein.Such a cutting device can of course also be provided in the embodiment described with reference to FIG. 6.

Claims (6)

  1. A two-for-one twisting machine, the twisting spindles of which respectively have a threading device (5) which is arranged in the region of the spindle axis and through which the thread (F1, F2) is sucked by means of injector effect and is ejected by means of the jet of compressed air upwards through the space between the bobbin pot (30) and the balloon limiter (8), and with which a pneumatic thread catch mechanism (9, 9') installable in the region above the space between the bobbin pot (3) and the balloon limiter (8) is associated, for catching and passing on the ejected thread, characterised in that the thread catch mechanism has a thread catch ring (9, 9') which is arranged at the upper annular clearance (8.1) of the space between the bobbin pot (3) and the balloon limiter (8) or is superimposable thereon and which has in its interior a closed annular duct (10, 10') with a cross-section (11, 11') which is open towards the annular clearance (8.1) and which can be connected to a source of underpressure by way of a radially outwardly conducted connecting nozzle (12, 12').
  2. A two-for-one twisting machine according to claim 1, characterised in that the annular duct (10, 10') possesses a substantially circular cross-section and is connected to an annular entry slot (11, 11') opening at the underside of the ring or inside of the ring in a funnel-shaped manner towards the annular clearance (8.1).
  3. A two-for-one twisting machine according to claim 1 or 2, characterised in that a thread catch ring (9'), which is arranged stationarily at the upper annular clearance (8.1) of the space between the bobbin pot (3) and the balloon limiter (8) and the annular duct (10') of which possesses a cross-section (11') opening towards the inside of the ring co-operates with a suction nozzle (20) arranged on the inside of the ring in the region of the connecting nozzle (12') for conveying the thread on into the run-up region of the two-for-one twisting machine.
  4. A two-for-one twisting machine according to claim 1 or 2, characterised in that a thread catch ring (9) superimposable onto the upper annular clearance (8.1) of the space between the bobbin pot (3) and the balloon limiter (8) is part of the handling equipment which is manually movable relative to the two-for-one twisting machine.
  5. A two-for-one twisting machine according to claim 1 or 2, characterised in that a thread catch ring (9) superimposable on the upper annular clearance (8.1) of the space between the bobbin pot (3) and the balloon limiter (8) is part of an automatic or partly automatic operating unit (17) mobile along the two-for-one twisting machine, on which it is arranged pivotably.
  6. A two-for-one twisting machine according to one of claims 1 to 5, characterised in that the cross-section of the annular duct (10) is reduced, starting from the connecting nozzle (12) along the circumference of the ring in both directions as far as a location diametrically opposite to the connecting nozzle (12), in such a way that substantially the same suction force occurs at all points on the circumference of the annular clearance (8.1).
EP89102813A 1989-02-18 1989-02-18 Two-for-one twister Expired - Lifetime EP0383960B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8989102813T DE58903236D1 (en) 1989-02-18 1989-02-18 DOUBLE WIRE TWISTING MACHINE.
EP89102813A EP0383960B1 (en) 1989-02-18 1989-02-18 Two-for-one twister
US07/467,049 US4998405A (en) 1989-02-18 1990-01-18 Two-for-one twisting machine
JP2027300A JPH02242935A (en) 1989-02-18 1990-02-08 Double twisting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89102813A EP0383960B1 (en) 1989-02-18 1989-02-18 Two-for-one twister

Publications (2)

Publication Number Publication Date
EP0383960A1 EP0383960A1 (en) 1990-08-29
EP0383960B1 true EP0383960B1 (en) 1993-01-07

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Application Number Title Priority Date Filing Date
EP89102813A Expired - Lifetime EP0383960B1 (en) 1989-02-18 1989-02-18 Two-for-one twister

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US (1) US4998405A (en)
EP (1) EP0383960B1 (en)
JP (1) JPH02242935A (en)
DE (1) DE58903236D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189872A (en) * 1989-03-17 1993-03-02 Murata Kikai Kabushiki Kaisha Processing robot for a two-for-one twister
US5526634A (en) * 1990-10-23 1996-06-18 Murata Kikai Kabushiki Kaisha Robot device for piled-package type double twister
IT1248002B (en) * 1991-06-06 1995-01-05 Savio Spa METHOD FOR PNEUMATIC THREADING IN A DOUBLE PIN CABLE OF A RETORCITOR
IT1250757B (en) * 1991-08-02 1995-04-21 Savio Spa PERFECTED METHOD FOR PNEUMATIC THREADING IN A TWISTED CABLE SPINDLE WITH A SPINDLE
CN106835391B (en) * 2017-03-28 2022-07-01 天津商业大学 Rabbit hair wool top twisting device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648621C3 (en) * 1976-10-27 1981-11-26 Palitex Project-Company Gmbh, 4150 Krefeld Two-for-one twisting machine
IT1195894B (en) * 1979-09-24 1988-10-27 Savio Spa AUTOMATIC FEEDER FOR DOUBLE TORSION SPINDLES AND DOUBLE TORSION SPINDLES ADOPTING THAT INTRODUCER
DE3020726C2 (en) * 1980-05-31 1983-08-18 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Device for piecing a wrapped yarn
DE3543650A1 (en) * 1985-12-11 1987-06-19 Palitex Project Co Gmbh DOUBLE WIRE TWIN SPINDLE
DE3721364A1 (en) * 1987-06-29 1989-01-19 Palitex Project Co Gmbh SPINDLE ROTOR AS PART OF A DEVICE FOR PRODUCING A YARN OR TWIST AND DOUBLE WIRE TWISTED SPINDLE EQUIPPED WITH SUCH A SPINDLE ROTOR

Also Published As

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JPH02242935A (en) 1990-09-27
EP0383960A1 (en) 1990-08-29
US4998405A (en) 1991-03-12
DE58903236D1 (en) 1993-02-18

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