EP0659918B1 - Yarn delivering device - Google Patents

Yarn delivering device Download PDF

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Publication number
EP0659918B1
EP0659918B1 EP94116058A EP94116058A EP0659918B1 EP 0659918 B1 EP0659918 B1 EP 0659918B1 EP 94116058 A EP94116058 A EP 94116058A EP 94116058 A EP94116058 A EP 94116058A EP 0659918 B1 EP0659918 B1 EP 0659918B1
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EP
European Patent Office
Prior art keywords
thread
yarn
suction
storage drum
yam
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Expired - Lifetime
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EP94116058A
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German (de)
French (fr)
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EP0659918A3 (en
EP0659918A2 (en
Inventor
Adriano Deiuri
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Iropa AG
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Iropa AG
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Publication of EP0659918A2 publication Critical patent/EP0659918A2/en
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Classifications

    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34Handling the weft between bulk storage and weft-inserting means
    • D03D47/36Measuring and cutting the weft
    • D03D47/361Drum-type weft feeding devices
    • D03D47/364Yarn braking means acting on the drum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00Forwarding filamentary material
    • B65H51/16Devices for entraining material by flow of liquids or gases, e.g. air-blast devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00Guides for filamentary materials; Supports therefor
    • B65H57/003Arrangements for threading or unthreading the guide
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34Handling the weft between bulk storage and weft-inserting means
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34Handling the weft between bulk storage and weft-inserting means
    • D03D47/36Measuring and cutting the weft
    • D03D47/361Drum-type weft feeding devices
    • D03D47/364Yarn braking means acting on the drum
    • D03D47/366Conical
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a delivery device for ongoing Threads, in particular for use on textile machines, according to the preamble of claim 1.
  • a delivery device of the type in question is known from DE-OS 37 34 284, which by compressed air thread end conveyed through the thread guide tube after leaving the thread guide tube in the area the storage drum from an approximately parallel to the drum axis aligned blowing nozzle into a radial slot Guide channel is steered.
  • This takes hold e.g. pneumatically adjustable brake ring in the area of the root of the bristles and forms one beyond the brake ring in the direction of Drum axis curved channel section.
  • these opens another blow air nozzle such that their Beam runs radially to the drum axis and the thread in a channel-like, approximately triangular cutout of the head cone steers. Through this the thread end in directed the area of a suction blow nozzle.
  • this configuration is the complex structure of the thread delivery device, due to the at the deflection points required blowing air nozzles and additional channels.
  • the brake ring adjusted by pivoting the boom of the delivery device about a pivot axis to to move away from the drum surface. This adjustment is made by a Pneumatic cylinder.
  • the Brake ring adjusted away from the drum surface, then the delivery device from remaining thread material is cleaned, only then is a new thread in the delivery device inserted, and only then is the brake ring returned to its working position.
  • the object underlying the invention now exists therein a delivery device of the aforementioned type in to design in a technically simple manner that with a minimum of components and nozzles enables automatic, reliable threading of the thread is.
  • one of the generic types Delivery device simplifies threading the thread.
  • the brake ring is used to form the gap Controlled in parallel to the supply of the suction blow nozzles.
  • the brake ring is parallel to Drum axis shifted so that in the operating position bristles resting on the drum surface in step a gap to the drum surface.
  • By the thread can then pass this gap into the area of designed as Suagblasdüse thread take-off eyelet.
  • a preferred embodiment of the invention provides that the brake ring is switched off by means of an air cylinder and is reset by spring force. The control of the air cylinder can be done in parallel for supplying compressed air to the suction blowing nozzles.
  • the invention draws by reliably threading the thread Compressed air.
  • a training according to which is directed radially inwards towards the thread take-off eye Redirection of the in a plane vertically above the Thread take-off eyelet free-flying thread end exclusively by means of a lying on the lateral surface of the head cone Suction air flow is achieved, the number of with Compressed air working nozzles reduced to a minimum.
  • the thread blown through the thread guide tube enters now in one plane vertically above the thread take-off eye from such that the thread end approximately parallel to the drum surface runs, then along the lateral surface of the head cone detected by means of the suction air flow and further promoted by pushing through the thread take-off eyelet becomes. This is done using the thread end acting gravity, which is supportive affects the threading process. The thread end is therefore always grasped with certainty and in the thread take-off loop sucked. Additional deflection nozzles to provide a corresponding one Obtaining the thread direction course can accordingly associated with reduced manufacturing costs for the delivery device. Channeling too the head cone is not required, so this its smooth surface, which favors thread withdrawal can maintain. Otherwise, it leaves the invention Design to, with usual, available Compressed air values to work.
  • the brake ring To thread the To allow thread, the brake ring must be in axial Towards the storage drum such that its bristles a gap to the drum surface leave so that the thread end under the bristles here can take its intended path.
  • the brake ring For the purpose of Achieving a favorable position of the brake ring in its working and disengaging position is the brake ring adjustable on a sliding carriage. Independently of the displacement stroke of the brake ring can therefore always the individual setting. That in the axial direction the thread guide tube bent off the steering directs this Always end the thread so that it is in the previously left gap is directed. The thread end therefore arrives as intended always to the thread take-off eyelet.
  • the takeover can and deflection of the thread in the axial direction extending deflection channel take place in which the Mouth end of the thread guide tube set in is.
  • the suction blow nozzle is therefore always Thread end up to the suction area of the axial suction blow nozzle designed thread take-off eyelet.
  • This Both suction blow nozzles work on the Venturi principle.
  • the suction blow nozzles are designed so that your An annular chamber is arranged upstream of the annular gap. The one for education the same ring gap wall is with a wreath provided by air passage holes.
  • the Adjusting the bristles is easy by means of an adjusting screw accessible from the head end make. Changed by twisting them the sliding carriage carrying the brake ring is its Position to the storage drum. This set screw penetrates an opening of the baffle and can from there be operated. The lateral surface area behind the baffle the head cone runs underneath Achievement of a favorable thread steering in a straight line Extension from the base edge to the tip of the cone. This in turn ends in front of the suction blowing nozzle there. It should also be emphasized that the air supply to both Suction blow nozzles is about the same, so that with the same pressure and the same line cross-sections can be worked can, which also simplifies the structure of the Delivery device contributes.
  • the delivery device according to the first embodiment, 1-6 has one, for example to be attached to a support of a weaving machine Housing 1.
  • This takes in a housing cavity 2 a stator 3, in which a rotor 4 rotates.
  • the latter is penetrated by a rotor shaft 5 thread threading end sits in a roller bearing 6, the one in the housing cavity 2 closing Cover 7 is inserted.
  • the threading end turned collar 8 of the rotor shaft 5 is inclined directed thread guide tube 9, the mouth end 10 arranged in the axial direction of a coaxial to the rotor shaft 5
  • Storage drum 11 is bent.
  • a thread run-up truncated cone surface 12 At the level of The end of the mouth 10 forms the storage drum 11 a thread run-up truncated cone surface 12, so that when circulating the Thread guide tube 9, the rear thread turns the front ones already on the storage drum Thread turns to the head end of the storage drum 11 push forward.
  • the storage drum itself is rotatable arranged. However, so that they are not together with the Thread guide tube 9 rotates, it is not with one illustrated truncated cone 13 firmly connected. Its magnets are opposite to fixed magnets 14 of a housing side Ring 15
  • the storage drum bears on its free-flying front end 11 a head cone 16. Its base lies on the Face of the storage drum and is slightly smaller than the diameter of the storage drum 11.
  • the lateral surface area M of the head cone 16 goes from the base edge B out and extends in a straight line to to cone tip 17. The same extends to Inlet opening 18 of a thread take-off eye 19.
  • A serves as a carrier for the aforementioned thread take-off eye 19 Baffle 20, which runs vertically and at its top End of a U-shaped cross section on the housing 1 attached boom 21 is held.
  • the one about the Storage drum 11 extending arm 21 is located such a parallel distance to the storage drum 11 that he is the orbital movement of the thread guide tube 9 not affected.
  • the boom 21 takes a compressed air cylinder 22 on. Its piston rod 23 engages one longitudinally displaceable in the interior of the boom 21 guided sliding carriage 24. Relative to this is a carrier 25 for a concentric to the storage drum axis extending brake ring 26 out.
  • the Sliding carriage 24 supports a set screw 27 for the actuating end 28 of the baffle 20 an opening 29 trains. By turning the operating handle 28 is accompanied by a longitudinal displacement of the carrier 25, depending on the direction in which the Brake ring 26 is to be adjusted.
  • the brake ring 26 is directed inward of the drum Bristles 30 provided such that they correspond to the Shell surface of the head cone 16 are aligned. In the Working position, the bristle ends are on the head cone 16 of the storage drum 11.
  • the thread guide tube 9 sits in the rotor shaft centrally penetrating thread channel 31, which expands at the threading end.
  • a suction blow nozzle 32 is provided in the housing cover 7.
  • a spacer sleeve 33 In a central opening of the housing cover 7 is located a spacer sleeve 33, in which the nozzle housing 34 is firmly inserted.
  • the nozzle housing 34 assumes its end facing the rotor shaft 5 has a sealing collar 35 up to the free end of the rotor shaft 5 is enough. Accordingly, the thread channel 31 closes immediately to the outlet opening 36 of the sealing collar 35 on.
  • the outlet opening 36 is in turn connected with a short flow channel 37 of the nozzle body 34, which channel 37 following it a frusto-conical channel 38 extended to thereafter to merge into a circular cylindrical channel section 39.
  • a nozzle body 40 is pressed into this. center it forms a thread passage channel 41, which in Diameter is smaller than that of the flow channel 37 in the nozzle body 34.
  • the Flow channel 37 facing length is the nozzle body 40 equipped with a truncated cone section 42, the Cone angle is less than that of the frustoconical Channel 38.
  • the smallest diameter of the Truncated cone section 42 is smaller than that of the Flow channel 37, so that an annular gap 43 remains.
  • the nozzle body 40 On its circular-cylindrical remaining length the nozzle body 40 forms an annular chamber 44, in whose annular gap-side wall 45 is a ring of air passage holes 46 is provided. In the annular chamber 44 opens a compressed air supply line 47. The nozzle body 40 is then also arranged a threading eyelet 48, which in turn is firmly embedded in the nozzle housing 44.
  • the thread take-off eye 19 is also a suction blowing nozzle designed. It has one inserted into the baffle 20 Nozzle housing 49 with a nozzle body 50, which in its structure corresponds to that of the suction blow nozzle 32.
  • the feed lines 47, 51 of both suction blow nozzles 19, 32 assigned a common valve 52. The latter stands via a compressed air line 53 in connection with a Compressed air source 54.
  • a feed line goes from valve 52 55 to a distributor 56, which with both Leads 47, 51 as well as with the lead 57 in Connection is established, which leads to the compressed air cylinder 22.
  • the valve 52 can be controlled by means of a handle 58.
  • the aforementioned handle 58 is advantageously located on a box 59 connected to the housing 1, in which the valve 52 as well as the manifold 56 and the corresponding connections are housed.
  • the baffle 20 accommodating the suction blowing nozzle 19 corresponds in width about a third of the diameter the storage drum 11.
  • the radially inward on the thread take-off eye 19 directed redirection then takes place by means of the Lateral surface of the head cone 16 lying suction air flow, which deflection is supported by gravity of the thread end.
  • the baffle 20 provides one Limit the trajectory so that the thread end is not goes beyond the baffle, but with certainty arrives at the extraction eyelet 19 designed as a suction blowing nozzle and from there also according to the Venturi principle this exits.
  • the handle 58 can return to its initial position interrupting the compressed air supply.
  • One in Air cylinder 22 housed, not illustrated The spring then puts the brake ring 26 back in his starting position back.
  • the Threading is also carried out with the handle pressed 58 made.
  • the thread is now deflected in the transition area between the mouth end 61 and the suction blowing nozzle 19 through the deflection channel 62, so that at this version additional deflection nozzles can be omitted. This has a relieving effect during the threading process funnel-shaped extension 64 of the deflection channel on the inlet side 62 out.
  • the threading of the Fadens always in the position in which the muzzle ends 51 of the thread guide tube 9 in one plane located vertically above the thread take-off eye. Then can both gravity and the corresponding in the same surface of the surface of the head cone be used for thread guidance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Looms (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Coiling Of Filamentary Materials In General (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a delivery device for running yarns, especially for use on textile machines, having a storage drum (11), to which the yarn (F) is fed in the rear region by means of a yarn-guide tube (9) encircling the storage drum and from which the yarn (F) is drawn off overhead by means of a yarn draw-off eye (19). To allow as simple an automatic threading of the yarn (F) as possible by means of compressed air, it proposes that a deflection, directed radially inwards towards the yarn draw-off eye (19), of the yarn end flying freely in a plane vertically above the yarn draw-off eye (19) should take place, this being achieved solely by means of a suction-air flow lying on the outer surface of the head cone (16). <IMAGE>

Description

Die Erfindung betrifft eine Liefervorrichtung für laufende Fäden, insbesondere zum Einsatz an Textilmaschinen, gemäß Gattungsbegriff des Patentanspruches 1.The invention relates to a delivery device for ongoing Threads, in particular for use on textile machines, according to the preamble of claim 1.

Eine Liefervorrichtung der in Rede stehenden Art ist bekannt aus der DE-OS 37 34 284, wobei das durch Druckluft durch das Fadenführungsrohr geförderte Fadenende nach Verlassen des Fadenführungsrohres im Bereich vor der Speichertrommel von einer etwa parallel zur Trommelachse ausgerichteten Blasdüse in einen radial geschlitzen Führungskanal gelenkt wird. Dieser durchgreift den z.B. pneumatisch verstellbaren Bremsring im Bereich der Wurzel der Borsten und bildet jenseits des Bremsringes einen in Richtung der Trommelachse gekrümmten Kanalabschnitt aus. In diesen mündet eine weitere Blasluftdüse derart, daß deren Strahl radial zur Trommelachse verläuft und den Faden in einen kanalartigen, etwa dreieckförmigen Ausschnitt des Kopfkegels lenkt. Durch diesen wird das Fadenende in den Bereich einer Saugblasdüse geleitet. Nachteilig an dieser Ausgestaltung ist der aufwendige Aufbau der Fadenliefervorrichtung, bedingt durch die an den Umlenkstellen erforderlichen Blasluftdüsen und zusätzlichen Kanäle.A delivery device of the type in question is known from DE-OS 37 34 284, which by compressed air thread end conveyed through the thread guide tube after leaving the thread guide tube in the area the storage drum from an approximately parallel to the drum axis aligned blowing nozzle into a radial slot Guide channel is steered. This takes hold e.g. pneumatically adjustable brake ring in the area of the root of the bristles and forms one beyond the brake ring in the direction of Drum axis curved channel section. In these opens another blow air nozzle such that their Beam runs radially to the drum axis and the thread in a channel-like, approximately triangular cutout of the head cone steers. Through this the thread end in directed the area of a suction blow nozzle. Disadvantageous this configuration is the complex structure of the thread delivery device, due to the at the deflection points required blowing air nozzles and additional channels.

Beiblatt als Ergänzung der EP 0 659 918 A2, Einfügung in Spalte 1, als gesonderter Absatz zwischen den Zeilen 25 und 26:Supplement as a supplement to EP 0 659 918 A2, insertion in column 1, as a separate paragraph between lines 25 and 26:

Bei der Liefervorrichtung gemäß EP 0 436 900 A1 mit älterem Zeitrang wird der Bremsring durch Abklappen des Auslegers der Liefervorrichtung um eine Schwenkachse verstellt, um sich von der Trommelmantelfläche weg zu verlegen. Diese Verstellung erfolgt durch einen Pneumatikzylinder. Bei einem Einfädelzyklus für einen neuen Fäden wird zunächst der Bremsring von der Trommelmantelfläche weg verstellt, dann wird die Liefervorrichtung von verbliebenem Fadenmaterial gesäubert, danach erst wird ein neuer Faden in die Liefervorrichtung eingeführt, und dann erst wird der Bremsring wieder in seine Arbeitsposition zurückgestellt. Diese Schritte können automatisch gesteuert werden.In the delivery device according to EP 0 436 900 A1 with an older seniority, the brake ring adjusted by pivoting the boom of the delivery device about a pivot axis to to move away from the drum surface. This adjustment is made by a Pneumatic cylinder. In a threading cycle for a new thread, the Brake ring adjusted away from the drum surface, then the delivery device from remaining thread material is cleaned, only then is a new thread in the delivery device inserted, and only then is the brake ring returned to its working position. These steps can be controlled automatically.

Die der Erfindung zugrundeliegende Aufgabe besteht nun darin, eine Liefervorrichtung der vorgenannten Art in herstellungstechnisch einfacher Weise so auszugestalten, daß mit einem Mindestaufwand an Bauteilen und Düsen ein automatisches, zuverlässiges Einfädeln des Fadens ermöglicht ist.The object underlying the invention now exists therein a delivery device of the aforementioned type in to design in a technically simple manner that with a minimum of components and nozzles enables automatic, reliable threading of the thread is.

Gelöst wird diese Aufgabe durch die im Kennzeichen des Patentanspruches 1 angegebenen Merkmale. This task is solved by the in the license plate of the Claim 1 specified features.

Die Unteransprüche betreffen vorteilhafte Weiterbildungen der erfinderischen Lösung.The subclaims relate to advantageous developments the inventive solution.

Zufolge derartiger Ausgestaltung ist bei einer gattungsgemäßen Liefervorrichtung das Einfädeln des Fadens vereinfacht. Der Bremsring wird zur Ausbildung des Spaltes parallel zur Saugblasdüsen-Versorung gesteuert. Beim Lufteinfädeln des Fadens wird der Bremsring parallel zur Trommelachse verlagert, so daß die in der Betriebsstellung auf der Trommeloberfläche aufliegenden Borsten in eine Spaltstellung zur Trommelmantelfläche treten. Durch diesen Spalt kann dann der Faden bis in den Bereich der als Suagblasdüse gestalteten Fadenabzugsöse gelangen. Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß der Bremsring mittels eine Druckluftzylinders abgestelllt und durch Federkraft wieder zurückgestellt ist. Die Steuerung des Durckluftzylinders kann dabei parallel zur Druckluftversorgung der Saugblasdüsen erfolgt. Bevorzugt ist der Bremsring mit einem Verschiebeschlitten versehen, an welchem auch eine Prallwand angeordnet ist, welche zur Fadenführung dient. Die Erfindung zeichnet sich durch ein zuverlässiges Einfädeln des Fadens mittels Druckluft aus. Einer Weiterbildung zufolge, zufolge derer die radial einwärts auf die Fadenabzugsöse gerichtete Umlenkung des in einer Ebene vertikal oberhalb der Fadenabzugsöse freifliegenden Fadenendes ausschließlich mittels eines auf der Mantelfläche des Kopfkegels liegenden Saugluftstromes erzielt ist, ist die Anzahl von mit Druckluft arbeitenden Düsen auf ein Minimum reduziert. Der durch das Fadenführungsrohr geblasene Faden tritt nun in einer Ebene vertikal oberhalb der Fadenabzugsöse aus derart, daß das Fadenende etwa parallel zur Trommelmantelfläche verläuft, danach entlang der Mantelfläche des Kopfkegels mittels des Saugluftstromes erfaßt und unter Durchsetzen der Fadenabzugsöse weiter gefördert wird. Dies geschieht unter Ausnutzung der auf das Fadenende wirkenden Schwerkraft, was sich unterstützend auf den Einfädelvorgang auswirkt. Das Fadenende wird daher stets mit Sicherheit erfaßt und in die Fadenabzugsöse eingesaugt. Zusätzliche Umlenkdüsen, um einen entsprechenden Fadenrichtungsverlauf zu erhalten, können demgemäß entfallen verbunden mit verringerten Herstellungskosten für die Liefervorrichtung. Auch eine Kanalisierung des Kopfkegels ist nicht erforderlich, so daß dieser seine glatte, den Fadenabzug begünstigende Oberfläche beibehalten kann. Im übrigen läßt es die erfindungsgemäße Ausgestaltung zu, mit üblichen, zur Verfügung stehenden Druckluftwerten zu arbeiten. Unterstützt wird der Einfädelvorgang noch durch die Tatsache, daß die der Fadenabzugsöse zugeordnete Saugblasdüse in einer Prallwand für den aus dem Fadenführungsrohr austretenden Blasstrom angeordnet ist. Demgemäß erfüllt diese Prallwand eine Doppelfunktion: Einerseits dient sie zur Halterung der Saugblasdüse und andererseits stellt sich noch eine Umlenkwand für das Fadenende dar, so daß dieses nicht über die Saugblasdüse hinaus an dieser vorbeischießt, sondern den Einfädelvorgang begünstigt. Herstellungstechnische Vorteile der Liefervorrichtung ergeben sich ferner durch eine Saugblasdüse vor dem einführseitigen Ende des Fadenführungsrohres. Diese Saugblasdüse kann den gleichen Aufbau wie die als axiale Saugblasdüse gestaltete Fadenabzugsöse besitzen unter Verringerung der unterschiedlichen Bauteile. Um das Einfädeln des Fadens zu ermöglichen, muß zuvor der Bremsring in axialer Richtung der Speichertrommel verlagert worden sein derart, daß seine Borsten einen Spalt zur Trommelmantelfläche belassen, so daß das Fadenende unter den Borsten her seinen bestimmungsgemäßen Weg nehmen kann. Zwecks Erzielung einer günstigen Position des Bremsringes in seiner Arbeits- und Ausrückstellung ist der Bremsring einstellbar auf einem Verschiebeschlitten. Unabhängig von dem Verlagerungshub des Bremsringes kann daher stets die individuelle Einstellung erfolgen. Das in Achsrichtung der Trommel abgebogene Fadenführungsrohr lenkt das Fadenende stets so, daß es in den zuvor belassenen Spalt gerichtet ist. Das Fadenende gelangt daher bestimmungsgemäß stets zur Fadenabzugsöse. Bei einer erfindungsgemäßen Varianten, bei welcher ein entsprechend abgebogenes Führungsende am Fadenführungsrohr fehlt, kann die Übernahme und Umlenkung des Fadens durch einen in Achsrichtung verlaufenden Umlenkkanal erfolgen, in welchen das Mündungsende des Fadenführungsrohres hineingerichtet ist. Durch die am einführseitigen Ende des Fadenführungsrohres angeordnete Saugblasdüse wird daher stets das Fadenende bis in den Ansaugbereich der als axiale Saugblasdüse gestalteten Fadenabzugsöse gebracht. Diese beiden Saugblasdüsen arbeiten nach dem Venturi-Prinzip. Im Detail sind die Saugblasdüsen so aufgebaut, daß ihrem Ringspalt eine Ringkammer vorgeordnet ist. Die zur Bildung derselben ringspaltseitige Wand ist mit einen Kranz von Luftdurchtrittslöchern versehen. Es erfolgt daher eine gleichmäßige Speisung des Ringspaltes mit Druckluft unter Erzielung optimaler Saugblaswirkung. Es bietet sich dabei die Möglichkeit an, beide Saugblasdüsen über ein gemeinsames Ventil zu speisen. Auf aufwendige Folgesteuerungen kann daher verzichtet werden. Hierzu trägt auch das parallel zur Saugblasdüsen-Versorgung gesteuerte Zu- und Abstellen des Bremsringes bei. Im Detail sieht dies so aus, daß der Bremsring mittels eines Druckluftzylinders abgestellt und durch Federkraft wieder zurückgestellt ist. Herstellungstechnisch vereinfachend wirkt sich das Merkmal aus, daß die Prallwand an einem den Verschiebeschlitten des Bremsringes lagernden oberen Ausleger sitzt. Demgemäß wird ein Bauteil für verschiedene Aufgabe herangezogen. Einen günstigen Fadenumlenkeffekt erzeugen die Borsten dadurch, daß sie entsprechend der Mantelfläche des Kopfkegels ausgerichtet sind. Das Einstellen der Borsten läßt sich in einfacher Weise mittels einer vom Kopfende her zugänglichen Stellschraube vornehmen. Mit einem Verdrehen derselben verändert der den Bremsring tragende Verschiebeschlitten seine Position zur Speichertrommel. Diese Stellschraube durchsetzt eine Öffnung der Prallwand und kann von dort aus betätigt werden. Der hinter der Prallwand liegende Mantelflächenbereich des Kopfkegels verläuft dabei unter Erzielung einer günstigen Fadenlenkung in geradliniger Erstreckung von der Basiskante bis zur Kegelspitze. Diese wiederum endet vor der dortigen Saugblasdüse. Hervorzuheben ist noch, daß die Luftversorgung beider Saugblasdüsen etwa gleich ist, so daß mit gleichem Druck und gleichen Leitungsquerschnitten gearbeitet werden kann, was ebenfalls zu einer Vereinfachung im Aufbau der Liefervorrichtung beiträgt.As a result of such a configuration, one of the generic types Delivery device simplifies threading the thread. The brake ring is used to form the gap Controlled in parallel to the supply of the suction blow nozzles. At the Air threading the thread, the brake ring is parallel to Drum axis shifted so that in the operating position bristles resting on the drum surface in step a gap to the drum surface. By the thread can then pass this gap into the area of designed as Suagblasdüse thread take-off eyelet. A preferred embodiment of the invention provides that the brake ring is switched off by means of an air cylinder and is reset by spring force. The control of the air cylinder can be done in parallel for supplying compressed air to the suction blowing nozzles. Prefers is the brake ring with a sliding carriage provided, on which a baffle is also arranged, which is used for thread guidance. The invention draws by reliably threading the thread Compressed air. According to a training, according to which is directed radially inwards towards the thread take-off eye Redirection of the in a plane vertically above the Thread take-off eyelet free-flying thread end exclusively by means of a lying on the lateral surface of the head cone Suction air flow is achieved, the number of with Compressed air working nozzles reduced to a minimum. The thread blown through the thread guide tube enters now in one plane vertically above the thread take-off eye from such that the thread end approximately parallel to the drum surface runs, then along the lateral surface of the head cone detected by means of the suction air flow and further promoted by pushing through the thread take-off eyelet becomes. This is done using the thread end acting gravity, which is supportive affects the threading process. The thread end is therefore always grasped with certainty and in the thread take-off loop sucked. Additional deflection nozzles to provide a corresponding one Obtaining the thread direction course can accordingly associated with reduced manufacturing costs for the delivery device. Channeling too the head cone is not required, so this its smooth surface, which favors thread withdrawal can maintain. Otherwise, it leaves the invention Design to, with usual, available Compressed air values to work. The is supported Threading process by the fact that the Suction blow nozzle assigned to the thread take-off eye in a baffle for the emerging from the thread guide tube Blow stream is arranged. Accordingly, this baffle meets a double function: on the one hand, it serves as a holder the suction blow nozzle and on the other hand still turns a baffle for the thread end, so that this do not shoot past the suction blow nozzle, but favors the threading process. Technical production Advantages of the delivery device result further through a suction blow nozzle in front of the insertion side End of the thread guide tube. This suction blow nozzle can have the same construction as the axial suction blowing nozzle designed thread take-off eyelets have reduced of the different components. To thread the To allow thread, the brake ring must be in axial Towards the storage drum such that its bristles a gap to the drum surface leave so that the thread end under the bristles here can take its intended path. For the purpose of Achieving a favorable position of the brake ring in its working and disengaging position is the brake ring adjustable on a sliding carriage. Independently of the displacement stroke of the brake ring can therefore always the individual setting. That in the axial direction the thread guide tube bent off the steering directs this Always end the thread so that it is in the previously left gap is directed. The thread end therefore arrives as intended always to the thread take-off eyelet. In an inventive Variants in which a correspondingly bent Leading end of the thread guide tube is missing, the takeover can and deflection of the thread in the axial direction extending deflection channel take place in which the Mouth end of the thread guide tube set in is. Through the end of the thread guide tube on the insertion side arranged suction blow nozzle is therefore always Thread end up to the suction area of the axial suction blow nozzle designed thread take-off eyelet. This Both suction blow nozzles work on the Venturi principle. In detail, the suction blow nozzles are designed so that your An annular chamber is arranged upstream of the annular gap. The one for education the same ring gap wall is with a wreath provided by air passage holes. It is therefore done an even supply of compressed air to the annular gap while achieving optimal suction blowing effect. It offers the possibility of using both suction blowing nozzles to feed a common valve. On complex sequential controls can therefore be dispensed with. This helps also the one that is controlled in parallel to the suction blower supply Switching the brake ring on and off. In detail this looks like the brake ring using an air cylinder turned off and again by spring force is deferred. Simplifying manufacturing technology affects the feature that the baffle on one the sliding carriage of the upper brake ring Boom sits. Accordingly, one component is different Task used. A favorable thread deflection effect produce the bristles by doing so the lateral surface of the head cone are aligned. The Adjusting the bristles is easy by means of an adjusting screw accessible from the head end make. Changed by twisting them the sliding carriage carrying the brake ring is its Position to the storage drum. This set screw penetrates an opening of the baffle and can from there be operated. The lateral surface area behind the baffle the head cone runs underneath Achievement of a favorable thread steering in a straight line Extension from the base edge to the tip of the cone. This in turn ends in front of the suction blowing nozzle there. It should also be emphasized that the air supply to both Suction blow nozzles is about the same, so that with the same pressure and the same line cross-sections can be worked can, which also simplifies the structure of the Delivery device contributes.

Nachstehend werden zwei Ausführungsbeispiele der Erfindung anhand von Zeichnungen erläutert. Es zeigt

Fig. 1
eine Liefervorrichtung für laufende Fäden gemäß dem ersten Ausführungsbeispiel in Ansicht,
Fig. 2
teilweise im Längsschnitt und teilweise in Ansicht die Fadenliefervorrichtung vor dem Einfädeln des Fadens,
Fig. 3
eine der Fig. 2 entsprechende Darstellung, jedoch bei in Achsrichtung zur Speichertrommel verlagertem Bremsring bei eingefädeltem Faden,
Fig. 4
in starker Vergrößerung einen Längsschnitt durch die am einführseitigen Ende des Fadenführungsrohres befindliche Saugblasdüse, die in ihrem Aufbau der am abzugsseitigen Ende befindlichen Saugblasdüse entspricht,
Fig. 5
einen Querschnitt durch die Saugblasdüse auf Höhe der Ringkammer, in Richtung der mit Luftdurchtrittslöchern ausgestatteten ringspaltseitigen Wand gesehen,
Fig. 6
ein Blockschaltbild hinsichtlich der Druckluftbeaufschlagung der Saugblasdüsen und des dem Bremsring zugeordneten Druckluftzylinders,
Fig. 7
teilweise im Längsschnitt, teilweise in Ansicht die Liefervorrichtung gemäß der zweiten Ausführungsform und
Fig. 8
eine Unteransicht des den Umlenkkanal aufweisenden Blockes.
Two exemplary embodiments of the invention are explained below with reference to drawings. It shows
Fig. 1
a view of a delivery device for running threads according to the first embodiment,
Fig. 2
partly in longitudinal section and partly in view of the thread delivery device before threading the thread,
Fig. 3
2 shows a representation corresponding to FIG. 2, but with the brake ring displaced in the axial direction to the storage drum with the thread threaded,
Fig. 4
in a large enlargement, a longitudinal section through the suction blow nozzle located at the insertion end of the thread guide tube, the structure of which corresponds to that of the suction blow nozzle at the withdrawal end,
Fig. 5
a cross section through the suction blowing nozzle at the level of the annular chamber, in the direction of the wall on the annular gap side equipped with air passage holes,
Fig. 6
2 shows a block diagram with regard to the compressed air supply to the suction blowing nozzles and the compressed air cylinder assigned to the brake ring,
Fig. 7
partly in longitudinal section, partly in view of the delivery device according to the second embodiment and
Fig. 8
a bottom view of the block having the deflection channel.

Die Liefervorrichtung gemäß dem ersten Ausführungsbeispiel, dargestellt in den Fig. 1 - 6, besitzt ein beispielsweise an einem Träger einer Webmaschine zu befestigendes Gehäuse 1. Dieses nimmt in einer Gehäusehöhlung 2 einen Stator 3 auf, in welchem ein Rotor 4 umläuft. Letzterer wird durchsetzt von einer Rotorwelle 5. Deren fadeneinfädelungsseitiges Ende sitzt in einem Wälzlager 6, das in einem die Gehäusehöhlung 2 verschließenden Deckel 7 eingesetzt ist.The delivery device according to the first embodiment, 1-6, has one, for example to be attached to a support of a weaving machine Housing 1. This takes in a housing cavity 2 a stator 3, in which a rotor 4 rotates. The latter is penetrated by a rotor shaft 5 thread threading end sits in a roller bearing 6, the one in the housing cavity 2 closing Cover 7 is inserted.

Von einem querschnittsgrößeren, dem Einfädelungsende abgekehrten Bund 8 der Rotorwelle 5 geht ein geneigt gerichtetes Fadenführungsrohr 9 aus, dessen Mündungsende 10 in Achsrichtung einer koaxial zur Rotorwelle 5 angeordneten Speichertrommel 11 abgebogen ist. Auf Höhe des Mündungsendes 10 formt die Speichertrommel 11 eine Fadenauflauf-Kegelstumpffläche 12, so daß beim Umlauf des Fadenführungsrohres 9 die rückwärtigen Fadenwindungen die vorderen, bereits auf der Speichertrommel befindlichen Fadenwindungen zum Kopfende der Speichertrommel 11 hin vorschieben. Die Speichertrommel selbst ist drehbar angeordnet. Damit sie jedoch nicht zusammen mit dem Fadenführungsrohr 9 umläuft, ist sie mit einem mit nicht veranschaulichten Magneten bestückten Kegelstumpf 13 fest verbunden. Dessen Magnete befinden sich in Gegenüberlage zu ortsfesten Magneten 14 eines gehäuseseitigen Ringes 15.From a larger cross-section, the threading end turned collar 8 of the rotor shaft 5 is inclined directed thread guide tube 9, the mouth end 10 arranged in the axial direction of a coaxial to the rotor shaft 5 Storage drum 11 is bent. At the level of The end of the mouth 10 forms the storage drum 11 a thread run-up truncated cone surface 12, so that when circulating the Thread guide tube 9, the rear thread turns the front ones already on the storage drum Thread turns to the head end of the storage drum 11 push forward. The storage drum itself is rotatable arranged. However, so that they are not together with the Thread guide tube 9 rotates, it is not with one illustrated truncated cone 13 firmly connected. Its magnets are opposite to fixed magnets 14 of a housing side Ring 15

An seinem freifliegenden Stirnende trägt die Speichertrommel 11 einen Kopfkegel 16. Dessen Basis liegt an der Stirnseite der Speichertrommel an und ist etwas kleiner als der Durchmesser der Speichertrommel 11. Der Mantelflächenbereich M des Kopfkegels 16 geht von der Basiskante B aus und verläuft in geradliniger Erstreckung bis zur Kegelspitze 17. Dieselbe erstreckt sich bis zur Einlaßöffnung 18 einer Fadenabzugsöse 19.The storage drum bears on its free-flying front end 11 a head cone 16. Its base lies on the Face of the storage drum and is slightly smaller than the diameter of the storage drum 11. The lateral surface area M of the head cone 16 goes from the base edge B out and extends in a straight line to to cone tip 17. The same extends to Inlet opening 18 of a thread take-off eye 19.

Als Träger der vorgenannten Fadenabzugsöse 19 dient eine Prallwand 20, die vertikal verläuft und an ihrem oberen Ende von einem im Querschnitt U-förmigen, am Gehäuse 1 befestigten Ausleger 21 gehalten ist. Der sich über die Speichertrommel 11 hinaus erstreckende Ausleger 21 befindet sich in einem solchen parallelen Abstand zur Speichertrommel 11, daß er die Umlaufbewegung des Fadenführungsrohres 9 nicht beeinträchtigt.A serves as a carrier for the aforementioned thread take-off eye 19 Baffle 20, which runs vertically and at its top End of a U-shaped cross section on the housing 1 attached boom 21 is held. The one about the Storage drum 11 extending arm 21 is located such a parallel distance to the storage drum 11 that he is the orbital movement of the thread guide tube 9 not affected.

In seinem Innenraum nimmt der Ausleger 21 einen Druckluftzylinder 22 auf. Dessen Kolbenstange 23 greift an einem im Innenraum des Auslegers 21 längsverschieblich geführten Verschiebeschlitten 24 an. Relativ zu diesem ist ein Träger 25 für einen konzentrisch zur Speichertrommelachse verlaufenden Bremsring 26 geführt. Der Verschiebeschlitten 24 lagert eine Stellschraube 27, für deren Betätigungsende 28 die Prallwand 20 eine Öffnung 29 ausbildet. Mit einem Verdrehen der Betätigungshandhabe 28 geht eine Längsverschiebung des Trägers 25 einher, und zwar in Abhängigkeit davon, in welche Richtung der Bremsring 26 verstellt werden soll.In its interior, the boom 21 takes a compressed air cylinder 22 on. Its piston rod 23 engages one longitudinally displaceable in the interior of the boom 21 guided sliding carriage 24. Relative to this is a carrier 25 for a concentric to the storage drum axis extending brake ring 26 out. The Sliding carriage 24 supports a set screw 27 for the actuating end 28 of the baffle 20 an opening 29 trains. By turning the operating handle 28 is accompanied by a longitudinal displacement of the carrier 25, depending on the direction in which the Brake ring 26 is to be adjusted.

Der Bremsring 26 ist mit trommeleinwärts gerichteten Borsten 30 versehen derart, daß diese entsprechend der Mantelfläche des Kopfkegels 16 ausgerichtet sind. In der Arbeitsstellung liegen die Borstenenden an dem Kopfkegel 16 der Speichertrommel 11 an.The brake ring 26 is directed inward of the drum Bristles 30 provided such that they correspond to the Shell surface of the head cone 16 are aligned. In the Working position, the bristle ends are on the head cone 16 of the storage drum 11.

Das Fadenführungsrohr 9 setzt sich in einen die Rotorwelle zentral durchgreifenden Fadenkanal 31 fort, welcher sich am einfädelungsseitigen Ende erweitert. Dort ist in dem Gehäusedeckel 7 eine Saugblasdüse 32 vorgesehen. In einer zentralen Öffnung des Gehäusesdeckels 7 befindet sich eine Distanzbüchse 33, in welcher das Düsengehäuse 34 fest eingesetzt ist. Das Düsengehäuse 34 nimmt an seinem der Rotorwelle 5 zugekehrten Ende einen Dichtkragen 35 auf, der bis zum freien Stirnende der Rotorwelle 5 reicht. Demgemäß schließt sich der Fadenkanal 31 unmittelbar an die Austrittsöffnung 36 des Dichtkragens 35 an. Die Austrittsöffnung 36 steht ihrerseits in Verbindung mit einem kurzen Durchströmkanal 37 des Düsenkörpers 34, welcher Kanal 37 sich im Anschluß daran zu einem kegelstumpfförmigen Kanal 38 erweitert, um danach in einen kreiszylindrischen Kanalabschnitt 39 überzugehen. In diesen ist ein Düsenkörper 40 eingepreßt. Mittig bildet er einen Fadendurchgangskanal 41 aus, der im Durchmesser kleiner ist als derjenige des Durchströmkanals 37 im Düsenkörper 34. Etwa auf seiner halben, dem Durchströmkanal 37 zugekehrten Länge ist der Düsenkörper 40 mit einem Kegelstumpfabschnitt 42 ausgestattet, dessen Kegelwinkel geringer ist als derjenige des kegelstumpfförmigen Kanales 38. Der kleinste Durchmesser des Kegelstumpfabschnittes 42 ist kleiner als derjenige des Durchströmkanales 37, so daß demgemäß ein Ringspalt 43 verbleibt. Auf seiner kreiszylindrisch gestalteten Restlänge bildet der Düsenkörper 40 eine Ringkammer 44, in deren ringspaltseitiger Wand 45 ein Kranz von Luftdurchtrittslöchern 46 vorgesehen ist. In die Ringkammer 44 mündet eine Druckluftzuführleitung 47. Dem Düsenkörper 40 ist dann noch eine Einfädelungsöse 48 vorgeordnet, die ihrerseits im Düsengehäuse 44 fest eingebettet ist.The thread guide tube 9 sits in the rotor shaft centrally penetrating thread channel 31, which expands at the threading end. There is in a suction blow nozzle 32 is provided in the housing cover 7. In a central opening of the housing cover 7 is located a spacer sleeve 33, in which the nozzle housing 34 is firmly inserted. The nozzle housing 34 assumes its end facing the rotor shaft 5 has a sealing collar 35 up to the free end of the rotor shaft 5 is enough. Accordingly, the thread channel 31 closes immediately to the outlet opening 36 of the sealing collar 35 on. The outlet opening 36 is in turn connected with a short flow channel 37 of the nozzle body 34, which channel 37 following it a frusto-conical channel 38 extended to thereafter to merge into a circular cylindrical channel section 39. A nozzle body 40 is pressed into this. center it forms a thread passage channel 41, which in Diameter is smaller than that of the flow channel 37 in the nozzle body 34. About on its half, the Flow channel 37 facing length is the nozzle body 40 equipped with a truncated cone section 42, the Cone angle is less than that of the frustoconical Channel 38. The smallest diameter of the Truncated cone section 42 is smaller than that of the Flow channel 37, so that an annular gap 43 remains. On its circular-cylindrical remaining length the nozzle body 40 forms an annular chamber 44, in whose annular gap-side wall 45 is a ring of air passage holes 46 is provided. In the annular chamber 44 opens a compressed air supply line 47. The nozzle body 40 is then also arranged a threading eyelet 48, which in turn is firmly embedded in the nozzle housing 44.

Die Fadenabzugsöse 19 ist ebenfalls als Saugblasdüse gestaltet. Sie besitzt ein in die Prallwand 20 eingesetztes Düsengehäuse 49 mit einem Düsenkörper 50, der in seinem Aufbau demjenigen der Saugblasdüse 32 entspricht. Den Zuleitungen 47, 51 beider Saugblasdüsen 19, 32 ist ein gemeinsames Ventil 52 zugeordnet. Letzteres steht über eine Druckluftleitung 53 in Verbindung mit einer Druckluftquelle 54. Von dem Ventil 52 geht eine Speiseleitung 55 zu einem Verteiler 56 aus, der sowohl mit den Zuleitungen 47, 51 als auch mit der Zuleitung 57 in Verbindung steht, welche zum Druckluftzylinder 22 führt. Das Ventil 52 ist mittels einer Handhabe 58 steuerbar. Durch Einwärtsverlagerung derselben werden über die Druckluftleitung 53 und Speiseleitung 55 über den Verteiler 56 sowohl die Saugblasdüsen 19, 32 als auch der Druckluftzylinder 22 gespeist, welcher den Bremsring 26 in axialer Richtung verlagert derart, daß seine Borsten in eine Spaltstellung zur Trommelmantelfläche treten, siehe Spalt 60 in Fig. 3. The thread take-off eye 19 is also a suction blowing nozzle designed. It has one inserted into the baffle 20 Nozzle housing 49 with a nozzle body 50, which in its structure corresponds to that of the suction blow nozzle 32. The feed lines 47, 51 of both suction blow nozzles 19, 32 assigned a common valve 52. The latter stands via a compressed air line 53 in connection with a Compressed air source 54. A feed line goes from valve 52 55 to a distributor 56, which with both Leads 47, 51 as well as with the lead 57 in Connection is established, which leads to the compressed air cylinder 22. The valve 52 can be controlled by means of a handle 58. By shifting them inward over the Compressed air line 53 and feed line 55 via the distributor 56 both the suction blowing nozzles 19, 32 and the Compressed air cylinder 22, which the brake ring 26th shifted in the axial direction such that its bristles step into a gap to the drum surface, see gap 60 in FIG. 3.

Die vorgenannte Handhabe 58 befindet sich vorteilhafterweise an einem mit dem Gehäuse 1 verbundenen Kasten 59, in dem das Ventil 52 als auch der Verteiler 56 und die entsprechenden Anschlüsse untergebracht sind.The aforementioned handle 58 is advantageously located on a box 59 connected to the housing 1, in which the valve 52 as well as the manifold 56 and the corresponding connections are housed.

Die die Saugblasdüse 19 aufnehmende Prallwand 20 entspricht in ihrer Breite etwa einem Drittel des Durchmessers der Speichertrommel 11.The baffle 20 accommodating the suction blowing nozzle 19 corresponds in width about a third of the diameter the storage drum 11.

Vor dem Einfädeln eines Fadens F wird die Rotorwelle 5 in einer solchen Stellung stillgesetzt, daß das vom Bund 8 ausgehende Fadenführungsrohr 9 bzw. dessen Mündungsende 10 in einer Ebene vertikal oberhalb der Fadenabzugsöse 19 liegt. Danach ist die Handhabe 58 zu betätigen, wobei gleichzeitig die Saugblasdüsen 19, 32 Druckluftzufuhr erhalten. Dies trifft auch zu auf den Druckluftzylinder 22, welcher über seine Kolbenstange 23 und Verschiebeschlitten 24 den Bremsring 26 verlagert, so daß dessen Borsten in eine spaltbildende Freigabestellung gelangen, vgl. Fig. 3. Es ist nun das Fadenende in den Bereich der Einfädelungsöse 48 zu bringen. Zufolge der in die Ringkammer 44 eintretenden Druckluft, welche die Luftdurchtrittslöcher 46 durchwandert und von dort aus den Ringspalt 43 verläßt, um in den Fadenkanal 31 einzuströmen, entsteht im Fadendurchgangskanal 41 ein Unterdruck, durch welchen der Faden F angesogen wird. Sobald der Faden F in den Durchströmkanal 37 gelangt, wird er durch die dort mit Druck austretende Luft mitgenommmen und durch das Fadenführungsrohr 9 weitergefördert. Druckluftbeaufschlagt verläßt das Fadenende das Mündungsende 10 des Fadenführungsrohres 9, verläuft etwa parallel oberhalb der Speichertrommel 11 und durchsetzt den Spalt 60 zwischen Speichertrommel 11 und Borsten 30 des Bremsringes 26. Die radial einwärts auf die Fadenabzugsöse 19 gerichtete Umlenkung erfolgt dann mittels des auf der Mantelfläche des Kopfkegels 16 liegenden Saugluftstromes, welche Umlenkung unterstützt wird durch die Schwerkraft des Fadenendes. Die Prallwand 20 stellt dabei eine Begrenzung der Flugbahn dar, so daß das Fadenende nicht über die Prallwand hinausgeht, sondern mit Sicherheit zur als Saugblasdüse gestalteten Abzugsöse 19 gelangt und von dort ebenfalls nach dem Venturi-Prinzip aus dieser austritt. Nach erfolgter Einfädelung des Fadens F kann die Handhabe 58 in ihre Ausgangsstellung zurückkehren unter Unterbrechung der Druckluftzufuhr. Eine im Druckluftzylinder 22 untergebrachte, nicht veranschaulichte Feder stellt dann den Bremsring 26 wieder in seine Ausgangsstellung zurück.Before threading a thread F, the rotor shaft 5 in such a position that the federal government 8 outgoing thread guide tube 9 or its mouth end 10 in a plane vertically above the thread take-off eye 19 lies. The handle 58 must then be actuated, at the same time the suction blowing nozzles 19, 32 compressed air supply receive. This also applies to the compressed air cylinder 22, which has its piston rod 23 and sliding carriage 24 relocated the brake ring 26 so that its bristles in a gap-forming release position arrive, cf. Fig. 3. It is now the thread end in the Bring area of threading eyelet 48. According to the Compressed air entering the annular chamber 44, which the Air passage holes 46 traversed and from there leaves the annular gap 43 in order to flow into the thread channel 31, a negative pressure is created in the thread passage channel 41, through which the thread F is drawn. As soon as the thread F enters the flow channel 37, it becomes entrained by the air escaping there with pressure and conveyed further through the thread guide tube 9. Druckluftbeaufschlagt the thread end leaves the mouth end 10 of the thread guide tube 9 runs approximately parallel above the storage drum 11 and penetrates the gap 60 between the storage drum 11 and bristles 30 of the brake ring 26. The radially inward on the thread take-off eye 19 directed redirection then takes place by means of the Lateral surface of the head cone 16 lying suction air flow, which deflection is supported by gravity of the thread end. The baffle 20 provides one Limit the trajectory so that the thread end is not goes beyond the baffle, but with certainty arrives at the extraction eyelet 19 designed as a suction blowing nozzle and from there also according to the Venturi principle this exits. After threading the thread F the handle 58 can return to its initial position interrupting the compressed air supply. One in Air cylinder 22 housed, not illustrated The spring then puts the brake ring 26 back in his starting position back.

Bei der in den Fig. 7 und 8 veranschaulichten zweiten Ausführungsform tragen gleiche Bauteile gleiche Bezugsziffern. Abweichend von der ersten Ausführungsform fehlt beim Fadenführungsrohr 9 das abgebogene Mündungsende 10. Das sich bei diesem zweiten Ausführungsbeispiel in gleicher Richtung zum Fadenführungsrohr erstreckende Mündungsende 61 ist in einen parallel zur Speichertrommel-Achsrichtung verlaufenden Umlenkkanal 62 gerichtet. Dieser befindet sich in einem in den Ausleger 21 eingesetzten, sich unterhalb des Druckluftzylinders 22 erstreckenden Block 63. Der Umlenkkanal 62 besitzt drei sich anschließende Bodenabschnitte 62', 62'', 62'''. Diese sind so angeordnet, daß der erste Bodenabschnitt 62' spitzwinklig ansteigend in Fadendurchlaufrichtung verläuft und das Fadenende zum parallel zur Trommelachse gerichteten Bodenabschnitt 62'' lenkt. Der dritte Bodenabschnitt 62''' verläuft entgegengesetzt spitzwinklig zur Trommelachse und lenkt das Fadenende in den Spalt 60 zwischen Borsten 30 und Speichertrommel in Richtung des Kopfkegels 16, Prallwand 20 und Saugblasdüse 19. Der Einfädelvorgang wird ebenfalls bei gedrückter Handhabe 58 vorgenommen. Die Umlenkung des Fadens geschieht nun im Übergangsbereich zwischen Mündungsende 61 und Saugblasdüse 19 durch den Umlenkkanal 62, so daß auch bei dieser Version zusätzliche Umlenkdüsen entfallen können. Erleichternd wirkt sich beim Einfädelungsvorgang die eingangsseitige trichterförmige Erweiterung 64 des Umlenkkanales 62 aus.The second illustrated in Figs. 7 and 8 Embodiment identical components have the same reference numerals. Deviating from the first embodiment is missing at the thread guide tube 9, the bent end of the mouth 10. The same in this second embodiment End of the mouth extending in the direction of the thread guide tube 61 is in a direction parallel to the storage drum axis direction extending deflection channel 62 directed. This is located in an inserted in the boom 21, extending below the air cylinder 22 Block 63. The deflection channel 62 has three adjoining bottom sections 62 ', 62' ', 62' ''. These are arranged so that the first bottom section 62 'increasing at an acute angle in the direction of thread travel runs and the thread end to parallel to the drum axis directed floor section 62 ''. The third floor section 62 '' 'runs at an opposite acute angle to the drum axis and directs the thread end into the gap 60 between bristles 30 and storage drum in the direction of Head cone 16, baffle 20 and suction nozzle 19. The Threading is also carried out with the handle pressed 58 made. The thread is now deflected in the transition area between the mouth end 61 and the suction blowing nozzle 19 through the deflection channel 62, so that at this version additional deflection nozzles can be omitted. This has a relieving effect during the threading process funnel-shaped extension 64 of the deflection channel on the inlet side 62 out.

Ferner erfolgt bei dieser Version die Einfädelung des Fadens stets in der Stellung, in welcher sich das Mündungsende 51 des Fadenführungsrohres 9 in einer Ebene vertikal oberhalb der Fadenabzugsöse befindet. Dann kann sowohl die Schwerkraft als auch die entsprechende in der gleichen Ebene befindliche Mantelfläche des Kopfkegels zur Fadenführung herangezogen werden.In this version, the threading of the Fadens always in the position in which the muzzle ends 51 of the thread guide tube 9 in one plane located vertically above the thread take-off eye. Then can both gravity and the corresponding in the same surface of the surface of the head cone be used for thread guidance.

Die in der vorstehenden Beschreibung, der Zeichnung und den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung von Bedeutung sein. Alle offenbarten Merkmale sind erfindungswesentlich. In die Offenbarung der Anmeldung wird hiermit auch der Offenbarungsinhalt der zugehörigen/beigefügten Prioritätsunterlagen (Abschrift der Voranmeldung) vollinhaltlich mit einbezogen.The in the above description, the drawing and Features of the invention disclosed in the claims can both individually and in any combination for the realization of the invention may be of importance. All disclosed features are essential to the invention. In the disclosure of the application is hereby also the Disclosure content of the associated / attached priority documents (Copy of the pre-registration) in full involved.

Claims (3)

  1. Feeding device for travelling yarns, in particular for use on textile machines like looms, having a storage drum (11) to which the yam is supplied in a rearward region by means of a yarn guide tube (9) which revolves around the storage drum and from which the yam is withdrawn overhead through a yarn withdrawal eyelet (19) and wherein an automatic threading of the yarn (F) is effected by means of compressed air in a manner wherein the yam (F) is first of all blown through the yarn guiding tube (9), deflected on a mouth side thereof parallel to the coat surface of the storage drum and conducted on an end side thereof below bristles of a braking ring (26) which leaves an open gap towards the coat surface of the storage drum, radially inwardly up into a region of the withdrawal eyelet (19), the latter being formed as an axial suction-blast nozzle, characterised in that the braking ring (26) is moved away by means of a compressed-air cylinder (22) and is returned by spring force, that a supply line (57) leading to the compressed-air cylinder (22) is connected to a distributor (53) and a common valve (52) which also serves to supply the suction-blast nozzle, that in case of an opening control of the valve (52) a simultaneous pressurised air supply is initiated both for the supply of the suction-blast nozzle and also the pressurised-air cylinder (22), by means of which the braking ring (26) is displaced into the release position defining said gap, and that after threading the yarn (F) the pressurised air supply to the pressurised-air cylinder (22) for the supply of the suction-blast nozzle is to be interrupted by means of the valve (52), and that the braking ring (26) is returned by the spring force into its home position, such that the braking ring (26) is moved away controllably parallel to the supply of the suction-blast nozzle and is returnable.
  2. Feeding device as in claim 1, characterised in that the radial inwardly oriented deflection towards the yam withdrawal eyelet (19) of the yam tip freely flying in a plane vertically above the yam withdrawal eyelet exclusively achieved by means of an air stream lying on the coat surface of a head cone (16) provided at a storage drum side, and that the tip of the head cone (16) at the storage drum side is directed towards the free cross-section of the yam withdrawal eyelet.
  3. Feeding device as in claim 1, characterised in that the bristles (30) are aligned corresponding to the coat surface (M) of the head cone (16).
EP94116058A 1990-03-07 1990-12-10 Yarn delivering device Expired - Lifetime EP0659918B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4007131 1990-03-07
DE4007131A DE4007131C2 (en) 1990-03-07 1990-03-07 Delivery device for running threads
EP90123730A EP0446447B2 (en) 1990-03-07 1990-12-10 Yarn delivering device

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP90123730.5 Division 1990-12-10
EP90123730A Division EP0446447B2 (en) 1990-03-07 1990-12-10 Yarn delivering device

Publications (3)

Publication Number Publication Date
EP0659918A2 EP0659918A2 (en) 1995-06-28
EP0659918A3 EP0659918A3 (en) 1997-11-19
EP0659918B1 true EP0659918B1 (en) 2003-10-29

Family

ID=6401592

Family Applications (3)

Application Number Title Priority Date Filing Date
EP94119612A Withdrawn EP0657379A2 (en) 1990-03-07 1990-12-10 Yarn delivering device
EP94116058A Expired - Lifetime EP0659918B1 (en) 1990-03-07 1990-12-10 Yarn delivering device
EP90123730A Expired - Lifetime EP0446447B2 (en) 1990-03-07 1990-12-10 Yarn delivering device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP94119612A Withdrawn EP0657379A2 (en) 1990-03-07 1990-12-10 Yarn delivering device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP90123730A Expired - Lifetime EP0446447B2 (en) 1990-03-07 1990-12-10 Yarn delivering device

Country Status (9)

Country Link
US (1) US5181544A (en)
EP (3) EP0657379A2 (en)
JP (1) JP3021712B2 (en)
CN (1) CN1026424C (en)
AT (2) ATE253134T1 (en)
BR (1) BR9100911A (en)
CZ (1) CZ281399B6 (en)
DE (3) DE4007131C2 (en)
ES (1) ES2074112T3 (en)

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IT1259551B (en) * 1992-04-22 1996-03-20 Lgl Electronics Spa ELECTRO-PNEUMATIC DEVICE FOR AUTOMATIC THREADING OF WEFT FEEDERS WITH TEXTILE MACHINES AND WEFT FEEDER INCORPORATING SAID DEVICE
IT1258241B (en) * 1992-11-05 1996-02-22 WEFT FEEDER
IT1263623B (en) * 1993-02-23 1996-08-27 Roj Electrotex Nuova Srl WIRE FEEDER
SE508469C2 (en) * 1993-04-21 1998-10-12 Sipra Patent Beteiligung Yarn feeder device in a textile machine and method for using yarn feeder device
DE9307967U1 (en) * 1993-05-26 1994-10-06 Palitex Project-Company GmbH, 47804 Krefeld Double-wire twisting spindle
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DE9406102U1 (en) * 1994-04-13 1995-08-10 Sobrevin Société de brevets industriels-Etablissement, Vaduz Thread store with thread take-off brake
US5546994A (en) * 1994-10-14 1996-08-20 Sobrevin Societe De Brevets Industriels-Etablissement Thread storage drum with frustoconical brake strip
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WO1997003908A1 (en) * 1995-07-24 1997-02-06 Iro Ab Yarn feeding device
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IT239803Y1 (en) * 1996-09-03 2001-03-13 Lgl Electronics Spa QUICK RELEASE RETAINING DEVICE OF THE BRAKE-HOLDER SUPPORT FOR WEFT FEEDERS FOR TEXTILE MACHINES
IT1302068B1 (en) * 1998-02-26 2000-07-20 Lgl Electronics Spa METHOD AND DEVICE FOR PNEUMATIC THREADING OF WEFT EQUIPMENT TO TEXTILE MACHINES.
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DE10358283A1 (en) * 2003-12-12 2005-07-21 Iro Ab Thread measuring feeder
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CN102634913A (en) * 2012-04-06 2012-08-15 经纬纺织机械股份有限公司 Weft storage device without twist change
IT201800007866A1 (en) * 2018-08-06 2020-02-06 Lgl Electronics Spa WEFT BRAKE DEVICE FOR ACCUMULATION YARN FEEDERS
CZ2019389A3 (en) * 2019-06-19 2020-12-30 Rieter Cz S.R.O. Equipment for sucking and transporting yarn for arranging on the service robot of a textile machine for yarn production, a service robot for operating a textile machine workplace and a textile machine
CN112553764A (en) * 2020-12-01 2021-03-26 张家港市凯利雅特种纺织纱线有限公司 Spandex yarn conveying device
CN112609299B (en) * 2020-12-10 2022-08-19 青岛村田机械制造有限公司 Textile weft storing device capable of avoiding weft breakage or weft leakage at weft storing device during operation
CN114000246B (en) * 2021-11-30 2022-11-29 嵊州市三凌动力科技有限公司 Triangular pressing sheet for weft accumulator and manufacturing method thereof

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Also Published As

Publication number Publication date
EP0446447B1 (en) 1995-07-05
EP0446447A1 (en) 1991-09-18
US5181544A (en) 1993-01-26
EP0659918A3 (en) 1997-11-19
CZ281399B6 (en) 1996-09-11
DE4007131C2 (en) 1999-12-30
ES2074112T3 (en) 1995-09-01
EP0659918A2 (en) 1995-06-28
JPH04213561A (en) 1992-08-04
EP0657379A2 (en) 1995-06-14
EP0446447B2 (en) 2000-11-22
JP3021712B2 (en) 2000-03-15
CS9100584A2 (en) 1991-09-15
CN1026424C (en) 1994-11-02
DE59009377D1 (en) 1995-08-10
DE4007131A1 (en) 1991-09-12
CN1054624A (en) 1991-09-18
ATE124732T1 (en) 1995-07-15
ATE253134T1 (en) 2003-11-15
DE59010936D1 (en) 2003-12-04
BR9100911A (en) 1991-11-05

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