EP0657379A2 - Yarn delivering device - Google Patents

Yarn delivering device Download PDF

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Publication number
EP0657379A2
EP0657379A2 EP94119612A EP94119612A EP0657379A2 EP 0657379 A2 EP0657379 A2 EP 0657379A2 EP 94119612 A EP94119612 A EP 94119612A EP 94119612 A EP94119612 A EP 94119612A EP 0657379 A2 EP0657379 A2 EP 0657379A2
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EP
European Patent Office
Prior art keywords
thread
brake ring
delivery device
storage drum
drum
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.)
Withdrawn
Application number
EP94119612A
Other languages
German (de)
French (fr)
Inventor
Adriano Deiuri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sobrevin Societe de Brevets Industriels
Original Assignee
Sobrevin Societe de Brevets Industriels
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
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Application filed by Sobrevin Societe de Brevets Industriels filed Critical Sobrevin Societe de Brevets Industriels
Publication of EP0657379A2 publication Critical patent/EP0657379A2/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/16—Devices for entraining material by flow of liquids or gases, e.g. air-blast devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/003—Arrangements for threading or unthreading the guide
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/366—Conical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a delivery device for running threads, in particular for use on textile machines, according to the preamble of claim 1.
  • a delivery device is known from DE-OS 37 34 284, wherein the thread end conveyed by compressed air through the thread guide tube after leaving the thread guide tube in the area in front of the storage drum is directed by a blowing nozzle oriented approximately parallel to the drum axis into a radially slotted guide channel. This passes through the brake ring in the area of the root of the bristles and forms a channel section curved beyond the brake ring in the direction of the drum axis.
  • a further blowing air nozzle opens into this in such a way that its jet runs radially to the drum axis and directs the thread into a channel-like, approximately triangular section of the head cone. The thread end is guided through this into the area of a suction blowing nozzle.
  • a disadvantage of this configuration is the complex construction of the thread delivery device, due to the blowing air nozzles and additional channels required at the deflection points.
  • a generic delivery device is known from EP 0 049 897.
  • a braking action on the bristle ring on the drum face is disadvantageous.
  • the brake ring can therefore be moved by hand relative to the drum face.
  • the invention is therefore based on the object, in terms of handling technology, to achieve a more economical one Develop the position of the brake ring in the working or disengaging position.
  • the brake ring can be brought into a spacing position from the drum end face by simple means, so that the thread can be drawn off without braking. If the compressed air supply is interrupted, the brake ring springs back immediately into the braking position. A variation of the braking effect is consequently also possible by the application of compressed air.
  • a further development of the invention provides that the number of nozzles working with compressed air is reduced to a minimum for threading the thread.
  • the thread blown through the thread guide tube now emerges in a plane vertically above the thread take-off eyelet in such a way that the thread end runs approximately parallel to the drum jacket surface, then is grasped along the jacket surface of the head cone by means of the suction air flow and is further conveyed while passing through the thread take-off eye. This is done using the force of gravity acting on the thread end, which has a supporting effect on the threading process. The thread end is therefore always detected with certainty and sucked into the thread take-off eyelet. Additional deflection nozzles in order to obtain a corresponding course of the thread direction can accordingly be dispensed with, combined with reduced manufacturing costs for the delivery device.
  • a channeling of the head cone is also not necessary, so that it maintains its smooth surface, which promotes thread take-off can.
  • the configuration according to the invention allows working with customary, available compressed air values.
  • the threading process is further supported by the fact that the suction blow nozzle assigned to the thread take-off eyelet is arranged in a baffle for the blowing stream emerging from the thread guide tube.
  • this baffle fulfills a double function: on the one hand it serves to hold the suction blowing nozzle and on the other hand it also represents a deflection wall for the thread end, so that this does not shoot past the suction blowing nozzle but favors the threading process. Manufacturing advantages also result from a suction blow nozzle in front of the insertion end of the thread guide tube.
  • This suction blow nozzle can have the same structure as the thread take-off eyelet designed as an axial suction blow nozzle, while reducing the number of different components.
  • the brake ring should preferably have been shifted beforehand in the axial direction of the storage drum in such a way that its bristles leave a gap to the drum surface so that the thread end can take its intended path under the bristles.
  • the brake ring is adjustable on a sliding carriage. Independent of the displacement stroke of the brake ring, the individual setting can therefore always be made.
  • the thread guide tube bent in the axial direction of the drum always directs the thread end in such a way that it is directed into the previously left gap.
  • the thread end therefore always comes to the thread take-off eye as intended.
  • the thread can be taken over and deflected by a deflection channel running in the axial direction, into which the mouth end of the thread guide tube is directed.
  • Due to the suction blow nozzle arranged at the insertion end of the thread guide tube the thread end is always brought into the suction area of the thread take-off eyelet designed as an axial suction blow nozzle.
  • These two suction blow nozzles work on the Venturi principle.
  • the suction blowing nozzles are constructed so that an annular chamber is arranged upstream of their annular gap.
  • the wall forming the same annular gap is provided with a ring of air passage holes. There is therefore a uniform supply of compressed air to the annular gap while achieving an optimal suction blowing effect. It is possible to feed both suction blow nozzles via a common valve. Complex sequence controls can therefore be dispensed with.
  • the activation and deactivation of the brake ring which is controlled in parallel with the suction nozzle supply, also contributes to this. In detail, this means that the brake ring is stopped by means of a compressed air cylinder and reset by spring force.
  • the feature that the baffle is seated on an upper arm which supports the sliding carriage of the brake ring simplifies the production process. Accordingly, a component is used for various tasks.
  • the bristles produce a favorable thread deflecting effect by aligning them with the lateral surface of the head cone.
  • the bristles can be adjusted in a simple manner by means of an adjusting screw accessible from the head end. By turning the same, the sliding carriage carrying the brake ring changes its position in relation to the storage drum. This set screw passes through an opening in the baffle and can be operated from there.
  • the lateral surface area of the head cone lying behind the baffle runs to achieve a favorable one Thread steering in a straight line from the base edge to the tip of the cone. This in turn ends in front of the suction blowing nozzle there.
  • the air supply to both suction blow nozzles is approximately the same, so that work can be carried out with the same pressure and the same power cross-sections, which likewise simplifies the structure of the delivery device.
  • the delivery device has a housing 1 to be fastened, for example, to a carrier of a weaving machine.
  • This houses a stator 3 in its housing cavity 2, in which a rotor 4 rotates.
  • the latter is penetrated by a rotor shaft 5.
  • Its thread-threading end sits in a roller bearing 6, which is inserted in a cover 7 closing the housing cavity 2.
  • a cross-sectionally larger collar 8 of the rotor shaft 5 facing away from the threading end starts from an inclined thread guide tube 9, the mouth end 10 of which is bent in the axial direction of a storage drum 11 arranged coaxially to the rotor shaft 5.
  • the storage drum 11 forms a thread run-up truncated cone surface 12, so that when the thread guide tube 9 rotates, the rear thread turns advance the front thread turns already on the storage drum toward the head end of the storage drum 11.
  • the storage drum itself is rotatably arranged. However, so that it does not rotate together with the thread guide tube 9, it is provided with a truncated cone 13 equipped with magnets (not shown) firmly connected. Its magnets are located opposite to fixed magnets 14 of a ring 15 on the housing side.
  • the storage drum At its free-flying front end, the storage drum carries a head cone 16. Its base lies against the front side of the storage drum and is somewhat smaller than the diameter of the storage drum 11.
  • the lateral surface area M of the head cone 16 extends from the base edge B and extends in a straight line up to Cone tip 17. The same extends to the inlet opening 18 of a thread take-off eye 19.
  • the extension arm 21 extending beyond the storage drum is located at such a parallel distance from the storage drum 11 that it does not impair the orbital movement of the thread guide tube 9.
  • the boom 21 receives a compressed air cylinder 22. Its piston rod 23 engages on a sliding carriage 24 which is longitudinally displaceable in the interior of the arm 21. Relative to this, a carrier 25 is guided for a brake ring 26 that runs concentrically to the storage drum axis.
  • the sliding carriage 24 supports an adjusting screw 27, for the actuating end 28 of which the baffle 20 forms an opening 29. Rotating the actuating handle 28 is accompanied by a longitudinal displacement of the carrier, depending on the direction in which the brake ring 26 is to be adjusted.
  • the brake ring 26 is provided with bristles 30 directed toward the drum in such a way that they are aligned with the lateral surface of the head cone 16. In the working position, the bristle ends rest against the head cone 16 of the storage drum 11.
  • the thread guide tube 9 continues into a thread channel 31 which extends centrally through the rotor shaft and which widens at the end on the threading side.
  • 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 there is a spacer sleeve 33, in which the nozzle housing 34 is firmly inserted.
  • the nozzle housing 34 receives at its end facing the rotor shaft 5 a sealing collar 35 which extends to the free end of the rotor shaft 5. Accordingly, the thread channel 31 directly adjoins the outlet opening 36 of the sealing collar 35.
  • the outlet opening 36 in turn is connected to a short through-flow channel 37 of the nozzle body 34, which channel 37 subsequently widens into a frustoconical channel 38 in order to then merge into a circular-cylindrical channel section 39.
  • a nozzle body 40 is pressed into this. In the middle, it forms a thread passage channel 41, which is smaller in diameter than that of the flow channel 37 in the nozzle body 34.
  • the nozzle body 40 is equipped with a truncated cone section 42, the cone angle of which is smaller than that of the truncated cone 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 accordingly.
  • the nozzle body 40 On its remaining length, which is of circular symmetry, the nozzle body 40 forms an annular chamber 44, in its wall 45 on the annular gap side, a ring of air passage holes 46 is provided. A compressed air supply line 47 opens into the annular chamber 44. A threading eyelet 48 is then arranged upstream of the nozzle body 40 and is in turn firmly embedded in the nozzle housing 44.
  • the thread take-off eye 19 is also designed as a suction blowing nozzle. It has a nozzle housing 49 inserted into the baffle 20 with a nozzle body 50 which corresponds in structure to that of the suction blowing nozzle 32.
  • a common valve 52 is assigned to the feed lines 47, 51 of the two suction blowing nozzles 19, 32. The latter is connected to a compressed air source 54 via a compressed air line 53.
  • a feed line 55 extends from the valve 52 to a distributor 56, which is connected both to the supply lines 47, 51 and to the supply line 57, which leads to the compressed air cylinder 22 .
  • the valve 52 can be controlled by means of a handle 58.
  • both the suction blowing nozzles 19, 32 and the compressed air cylinder 22 are fed via the compressed air line 53 and feed line 55 via the distributor 56, which displaces the brake ring 26 in the axial direction in such a way that its bristles enter a gap position with respect to the drum surface, see gap 60 in Fig. 3.
  • the aforementioned handle is advantageously located on a box 59 connected to the housing 1, in which the valve 52 as well as the distributor 56 and the corresponding connections are accommodated.
  • the width of the baffle 20 receiving the suction blowing nozzle corresponds to approximately one third of the diameter of the storage drum 11.
  • the rotor shaft 5 Before threading a thread F, the rotor shaft 5 is stopped in such a position that the thread guide tube 9 originating from the collar 8 or its mouth end 10 lies in a plane vertically above the thread take-off eye 19.
  • the handle 58 is then to be actuated, the suction blowing nozzles 19, 32 receiving compressed air at the same time.
  • This also applies to the compressed air cylinder 22, which displaces the brake ring 26 via its piston rod 23 and sliding carriage 24, so that its bristles reach a gap-forming release position, cf. Fig. 3.
  • the thread end must now be brought into the area of the threading eyelet.
  • the deflection directed radially inwards onto the thread take-off eye 19 is then carried out by means of the on the lateral surface of the Head cone 16 lying suction air flow, which deflection is supported by the gravity of the thread end.
  • the baffle 20 represents a limitation of the trajectory, so that the thread end does not go beyond the baffle, but surely reaches the extraction eyelet 19 designed as a suction blow nozzle and from there also emerges from the venturi principle.
  • the handle 58 can return to its starting position interrupting the compressed air supply.
  • a spring, not shown, housed in the compressed air cylinder then returns the brake ring to its starting position.
  • the bent mouth end 10 is missing in the thread guide tube 9.
  • the mouth end 61 which extends in the same direction to the thread guide tube in this second exemplary embodiment, is directed into a deflection channel 62 which runs parallel to the storage drum axial direction. This is located in a block 63 which is inserted in the boom 21 and extends below the compressed air cylinder 22.
  • the deflection channel 62 has three adjoining bottom sections 62 ', 62'',62'''.
  • first bottom section 62 ' rises at an acute angle in the direction of the thread passage and directs the thread end to the bottom section 62''parallel to the drum axis.
  • the third bottom section 62 ''' runs at an 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 the head cone 16, baffle wall 20 and suction blowing nozzle 19.
  • the threading process is also carried out while the handle 58 is pressed.
  • the deflection of the thread now takes place in the transition region between the mouth end 61 and suction blowing nozzle 19 through the deflection channel 62, so that additional deflection nozzles can also be omitted in this version.
  • the funnel-shaped enlargement 64 of the deflection channel 62 on the input side has a facilitating effect during the threading process.
  • the threading of the thread always takes place in the position in which the mouth end 51 of the thread guide tube 9 is located in a plane vertically above the thread take-off eye. Then both the force of gravity and the corresponding lateral surface of the head cone located in the same plane can 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)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Or Twisting Of Yarns (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 threads, especially for use on textile machines, such as weaving looms or the like, with a storage drum (11), to which the thread (F) is fed in the rear region by means of a guide tube (9) circling round the storage drum and from which the thread (F) is drawn off overhead through a thread draw-off eye (19), the thread being guided radially inwards under the bristles of a brake ring (26). For an improvement in handling, particularly for a simplified axial brake-ring displacement accompanied by a variation in the braking effect, there is provision for the brake ring (26) to be capable of being brought by means of a compressed-air cylinder (22) into a position at a distance from the drum outer surface and to be capable of being returned again by spring force. <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 running threads, in particular for use on textile machines, according to the preamble of claim 1.

Eine Liefervorrichtung 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 geschlitzten Führungskanal gelenkt wird. Dieser durchgreift den 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 is known from DE-OS 37 34 284, wherein the thread end conveyed by compressed air through the thread guide tube after leaving the thread guide tube in the area in front of the storage drum is directed by a blowing nozzle oriented approximately parallel to the drum axis into a radially slotted guide channel. This passes through the brake ring in the area of the root of the bristles and forms a channel section curved beyond the brake ring in the direction of the drum axis. A further blowing air nozzle opens into this in such a way that its jet runs radially to the drum axis and directs the thread into a channel-like, approximately triangular section of the head cone. The thread end is guided through this into the area of a suction blowing nozzle. A disadvantage of this configuration is the complex construction of the thread delivery device, due to the blowing air nozzles and additional channels required at the deflection points.

Eine gattungsgemäße Liefervorrichtung ist aus der EP 0 049 897 bekannt. Insbesondere beim Einfädeln eines Fadens ist eine bremsende Beaufschlagung des Borstenkranzes auf der Trommelstirnfläche nachteilhaft. Dort ist deshalb der Bremsring gegenüber der Trommelstirnfläche von Hand verlagerbar.A generic delivery device is known from EP 0 049 897. In particular when threading a thread, a braking action on the bristle ring on the drum face is disadvantageous. There, the brake ring can therefore be moved by hand relative to the drum face.

Der Erfindung liegt daher die Aufgabe zugrunde, zur handhabungtechnisch besseren Erzielung einer günstigen Position des Bremsringes in der Arbeits- bzw. Ausrückstellung weiterzubilden.The invention is therefore based on the object, in terms of handling technology, to achieve a more economical one Develop the position of the brake ring in the working or disengaging position.

Gelöst wird die Aufgabe durch die im Anspruch 1 angegebene Erfindung.The object is achieved by the invention specified in claim 1.

Die Unteransprüche betreffen vorteilhafte Weiterbildungen der Erfindung.The subclaims relate to advantageous developments of the invention.

Zufolge der erfindungsgemäßen Weiterbildung ist der Bremsring mit einfachen Mitteln in eine Abstandslage zur Trommelstirnfläche bringbar, so daß der Faden ungebremst abgezogen werden kann. Wird die Preßluftbeaufschlagung abgebrochen, so federt der Bremsring augenblicklich in die Bremsstellung zurück. Durch Preßluftbeaufschlagung ist demzufolge auch eine Variation der Bremswirkung möglich. Eine Weiterbildung der Erfindung sieht vor, daß zur Einfädelung des Fadens die Anzahl von mit Druckluft arbeitenden Düsen auf ein Minimum reduziert ist. 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 sie noch eine Umlenkwand für das Fadenende dar, so daß dieses nicht über die Saugblasdüse hinaus an dieser vorbeischießt, sondern den Einfädelvorgang begünstigt. Herstellungstechnische Vorteile 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, soll vorzugsweise 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 stetsdie individuelle Einstellung erfolgen. Das in Achsrichtung der Trommel abgebogene Fadenführungsrohr lenkt das Fadenende stets so, daß es in den zuvor belassenen Spaltgerichtet 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 einem 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 Bremringes bei. Im Detail sieht dies so aus, daß der Bremsring mittels eines Druckluftzylinders abgestelt 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 Aufgaben 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 Bremring 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 Leistungsquerschnitten gearbeitet werden kann, was ebenfalls zu einer Vereinfachung im Aufbau der Liefervorrichtung beträgt.As a result of the development according to the invention, the brake ring can be brought into a spacing position from the drum end face by simple means, so that the thread can be drawn off without braking. If the compressed air supply is interrupted, the brake ring springs back immediately into the braking position. A variation of the braking effect is consequently also possible by the application of compressed air. A further development of the invention provides that the number of nozzles working with compressed air is reduced to a minimum for threading the thread. The thread blown through the thread guide tube now emerges in a plane vertically above the thread take-off eyelet in such a way that the thread end runs approximately parallel to the drum jacket surface, then is grasped along the jacket surface of the head cone by means of the suction air flow and is further conveyed while passing through the thread take-off eye. This is done using the force of gravity acting on the thread end, which has a supporting effect on the threading process. The thread end is therefore always detected with certainty and sucked into the thread take-off eyelet. Additional deflection nozzles in order to obtain a corresponding course of the thread direction can accordingly be dispensed with, combined with reduced manufacturing costs for the delivery device. A channeling of the head cone is also not necessary, so that it maintains its smooth surface, which promotes thread take-off can. For the rest, the configuration according to the invention allows working with customary, available compressed air values. The threading process is further supported by the fact that the suction blow nozzle assigned to the thread take-off eyelet is arranged in a baffle for the blowing stream emerging from the thread guide tube. Accordingly, this baffle fulfills a double function: on the one hand it serves to hold the suction blowing nozzle and on the other hand it also represents a deflection wall for the thread end, so that this does not shoot past the suction blowing nozzle but favors the threading process. Manufacturing advantages also result from a suction blow nozzle in front of the insertion end of the thread guide tube. This suction blow nozzle can have the same structure as the thread take-off eyelet designed as an axial suction blow nozzle, while reducing the number of different components. In order to enable threading of the thread, the brake ring should preferably have been shifted beforehand in the axial direction of the storage drum in such a way that its bristles leave a gap to the drum surface so that the thread end can take its intended path under the bristles. In order to achieve a favorable position of the brake ring in its working and disengaging position, the brake ring is adjustable on a sliding carriage. Independent of the displacement stroke of the brake ring, the individual setting can therefore always be made. The thread guide tube bent in the axial direction of the drum always directs the thread end in such a way that it is directed into the previously left gap. The thread end therefore always comes to the thread take-off eye as intended. In a variant according to the invention, in which a correspondingly bent guide end is missing on the thread guide tube, the thread can be taken over and deflected by a deflection channel running in the axial direction, into which the mouth end of the thread guide tube is directed. Due to the suction blow nozzle arranged at the insertion end of the thread guide tube, the thread end is always brought into the suction area of the thread take-off eyelet designed as an axial suction blow nozzle. These two suction blow nozzles work on the Venturi principle. In detail, the suction blowing nozzles are constructed so that an annular chamber is arranged upstream of their annular gap. The wall forming the same annular gap is provided with a ring of air passage holes. There is therefore a uniform supply of compressed air to the annular gap while achieving an optimal suction blowing effect. It is possible to feed both suction blow nozzles via a common valve. Complex sequence controls can therefore be dispensed with. The activation and deactivation of the brake ring, which is controlled in parallel with the suction nozzle supply, also contributes to this. In detail, this means that the brake ring is stopped by means of a compressed air cylinder and reset by spring force. The feature that the baffle is seated on an upper arm which supports the sliding carriage of the brake ring simplifies the production process. Accordingly, a component is used for various tasks. The bristles produce a favorable thread deflecting effect by aligning them with the lateral surface of the head cone. The bristles can be adjusted in a simple manner by means of an adjusting screw accessible from the head end. By turning the same, the sliding carriage carrying the brake ring changes its position in relation to the storage drum. This set screw passes through an opening in the baffle and can be operated from there. The lateral surface area of the head cone lying behind the baffle runs to achieve a favorable one Thread steering in a straight line 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 approximately the same, so that work can be carried out with the same pressure and the same power cross-sections, which likewise simplifies the structure of the delivery device.

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
teilsweise 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 Bremring zugeordneten Druckluftzylinders,
Fig. 7
teilsweise 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 threading in,
Fig. 4
in 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 seiner 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 exemplary embodiment, shown in FIGS. 1-6, has a housing 1 to be fastened, for example, to a carrier of a weaving machine. This houses a stator 3 in its housing cavity 2, in which a rotor 4 rotates. The latter is penetrated by a rotor shaft 5. Its thread-threading end sits in a roller bearing 6, which is inserted in a cover 7 closing the housing cavity 2.

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.A cross-sectionally larger collar 8 of the rotor shaft 5 facing away from the threading end starts from an inclined thread guide tube 9, the mouth end 10 of which is bent in the axial direction of a storage drum 11 arranged coaxially to the rotor shaft 5. At the level of the mouth end 10, the storage drum 11 forms a thread run-up truncated cone surface 12, so that when the thread guide tube 9 rotates, the rear thread turns advance the front thread turns already on the storage drum toward the head end of the storage drum 11. The storage drum itself is rotatably arranged. However, so that it does not rotate together with the thread guide tube 9, it is provided with a truncated cone 13 equipped with magnets (not shown) firmly connected. Its magnets are located opposite to fixed magnets 14 of a ring 15 on the housing side.

An seinem freifliegenden Stirnende trägt die Speichertrommel 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.At its free-flying front end, the storage drum carries a head cone 16. Its base lies against the front side of the storage drum and is somewhat smaller than the diameter of the storage drum 11. The lateral surface area M of the head cone 16 extends from the base edge B and extends in a straight line up to Cone tip 17. The same extends to the 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 hinaus erstreckende Ausleger 21 befindet sich in einem solchen parallelen Abstand zur Speichertrommel 11, daß er die Umlaufbewegung des Fadenführungsrohres 9 nicht beeinträchtigt.A baffle wall 20, which runs vertically and is held at its upper end by a cross-sectionally U-shaped bracket 21 fastened to the housing 1, serves as the carrier of the aforementioned thread take-off eye 19. The extension arm 21 extending beyond the storage drum is located at such a parallel distance from the storage drum 11 that it does not impair the orbital movement of the thread guide tube 9.

In seinem Innenraum nimmt der Ausleger 21 einen Druckluftzylinder 22 auf. Dessen Kolbenstange 23 greift an einem im Inneraum 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 einher, und zwar in Abhängigkeit davon, in welche Richtung der Bremsring 26 verstellt werden soll.In its interior, the boom 21 receives a compressed air cylinder 22. Its piston rod 23 engages on a sliding carriage 24 which is longitudinally displaceable in the interior of the arm 21. Relative to this, a carrier 25 is guided for a brake ring 26 that runs concentrically to the storage drum axis. The sliding carriage 24 supports an adjusting screw 27, for the actuating end 28 of which the baffle 20 forms an opening 29. Rotating the actuating handle 28 is accompanied by a longitudinal displacement of the carrier, 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 provided with bristles 30 directed toward the drum in such a way that they are aligned with the lateral surface of the head cone 16. In the working position, the bristle ends rest against 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 Gehäusedeckels 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 kreissymmetrisch 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 continues into a thread channel 31 which extends centrally through the rotor shaft and which widens at the end on the threading side. There, a suction blow nozzle 32 is provided in the housing cover 7. In a central opening of the housing cover 7 there is a spacer sleeve 33, in which the nozzle housing 34 is firmly inserted. The nozzle housing 34 receives at its end facing the rotor shaft 5 a sealing collar 35 which extends to the free end of the rotor shaft 5. Accordingly, the thread channel 31 directly adjoins the outlet opening 36 of the sealing collar 35. The outlet opening 36 in turn is connected to a short through-flow channel 37 of the nozzle body 34, which channel 37 subsequently widens into a frustoconical channel 38 in order to then merge into a circular-cylindrical channel section 39. A nozzle body 40 is pressed into this. In the middle, it forms a thread passage channel 41, which is smaller in diameter than that of the flow channel 37 in the nozzle body 34. Approximately half of its length facing the flow channel 37, the nozzle body 40 is equipped with a truncated cone section 42, the cone angle of which is smaller than that of the truncated cone 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 accordingly. On its remaining length, which is of circular symmetry, the nozzle body 40 forms an annular chamber 44, in its wall 45 on the annular gap side, a ring of air passage holes 46 is provided. A compressed air supply line 47 opens into the annular chamber 44. A threading eyelet 48 is then arranged upstream of the nozzle body 40 and is in turn 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 des Saugblasdüse 32 entspricht. Den Zuleitungen 47, 51 beider Saugblasdüsen 19, 32 ist ein gemeinsames Ventils 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 designed as a suction blowing nozzle. It has a nozzle housing 49 inserted into the baffle 20 with a nozzle body 50 which corresponds in structure to that of the suction blowing nozzle 32. A common valve 52 is assigned to the feed lines 47, 51 of the two suction blowing nozzles 19, 32. The latter is connected to a compressed air source 54 via a compressed air line 53. A feed line 55 extends from the valve 52 to a distributor 56, which is connected both to the supply lines 47, 51 and to the supply line 57, which leads to the compressed air cylinder 22 . The valve 52 can be controlled by means of a handle 58. By moving them inward, both the suction blowing nozzles 19, 32 and the compressed air cylinder 22 are fed via the compressed air line 53 and feed line 55 via the distributor 56, which displaces the brake ring 26 in the axial direction in such a way that its bristles enter a gap position with respect to the drum surface, see gap 60 in Fig. 3.

Die vorgenannte Handhabe 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 is advantageously located on a box 59 connected to the housing 1, in which the valve 52 as well as the distributor 56 and the corresponding connections are accommodated.

Die die Saugblasdüse aufnehmende Prallwand 20 entspricht in ihrer Breite etwa einem Drittel des Durchmessers der Speichertrommel 11.The width of the baffle 20 receiving the suction blowing nozzle corresponds to approximately one third of the diameter of 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 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 mitgenommen und durch das Fadenführungsrohr 9 weitergefördert. Druckluftbaufschlagt 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 untergebrachte, nicht veranschaulichte Feder stellt dann den Bremsring wieder in seine Ausgangsstellung zurück.Before threading a thread F, the rotor shaft 5 is stopped in such a position that the thread guide tube 9 originating from the collar 8 or its mouth end 10 lies in a plane vertically above the thread take-off eye 19. The handle 58 is then to be actuated, the suction blowing nozzles 19, 32 receiving compressed air at the same time. This also applies to the compressed air cylinder 22, which displaces the brake ring 26 via its piston rod 23 and sliding carriage 24, so that its bristles reach a gap-forming release position, cf. Fig. 3. The thread end must now be brought into the area of the threading eyelet. As a result of the compressed air entering the annular chamber 44, which travels through the air passage holes 46 and leaves the annular gap 43 from there 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 arrives in the throughflow channel 37, it is carried along by the air escaping there under pressure and conveyed further through the thread guide tube 9. Pressurized air leaves the thread end of the mouth end 10 of the thread guide tube 9, runs approximately parallel above the storage drum 11 and passes through the gap 60 between the storage drum 11 and bristles 30 of the brake ring 26. The deflection directed radially inwards onto the thread take-off eye 19 is then carried out by means of the on the lateral surface of the Head cone 16 lying suction air flow, which deflection is supported by the gravity of the thread end. The baffle 20 represents a limitation of the trajectory, so that the thread end does not go beyond the baffle, but surely reaches the extraction eyelet 19 designed as a suction blow nozzle and from there also emerges from the venturi principle. After threading the thread F, the handle 58 can return to its starting position interrupting the compressed air supply. A spring, not shown, housed in the compressed air cylinder then returns the brake ring to its starting position.

Bei der in den Fig. 7 und 8 veranschaulichten zweiten Ausführungsform tragen gleiche Bauteile gleiche Bezugsziffern. Abweichend vom ersten Ausführungsbeispiel 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.In the second embodiment illustrated in FIGS. 7 and 8, identical components have the same reference numbers. In contrast to the first exemplary embodiment, the bent mouth end 10 is missing in the thread guide tube 9. The mouth end 61, which extends in the same direction to the thread guide tube in this second exemplary embodiment, is directed into a deflection channel 62 which runs parallel to the storage drum axial direction. This is located in a block 63 which is inserted in the boom 21 and extends below the compressed air cylinder 22. The deflection channel 62 has three adjoining bottom sections 62 ', 62'',62'''. These are arranged in such a way that the first bottom section 62 'rises at an acute angle in the direction of the thread passage and directs the thread end to the bottom section 62''parallel to the drum axis. The third bottom section 62 '''runs at an 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 the head cone 16, baffle wall 20 and suction blowing nozzle 19. The threading process is also carried out while the handle 58 is pressed. The deflection of the thread now takes place in the transition region between the mouth end 61 and suction blowing nozzle 19 through the deflection channel 62, so that additional deflection nozzles can also be omitted in this version. The funnel-shaped enlargement 64 of the deflection channel 62 on the input side has a facilitating effect during the threading process.

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.Furthermore, in this version the threading of the thread always takes place in the position in which the mouth end 51 of the thread guide tube 9 is located in a plane vertically above the thread take-off eye. Then both the force of gravity and the corresponding lateral surface of the head cone located in the same plane can be used for thread guidance.

Die in der vorstehenden Beschreibung, der Zeichnung und den Ansprüchen offenbarten Merkmale der Erfindung können soowhl 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 features of the invention disclosed in the above description, the drawing and the claims can be of importance both individually and in any combination for the implementation of the invention. All the features disclosed are essential to the invention. The disclosure content of the associated / attached priority documents (copy of the prior application) is hereby also included in full in the disclosure of the application.

Claims (5)

Liefervorrichtung für laufende Fäden, insbesondere zum Einsatz an Textilmaschinen, wie Webstühle oder dergleichen, mit einer Speichertrommel (11), welcher der Faden (F) im rückwärtigen Bereich mittels eines die Speichertrommel umkreisenden Führungsrohres (9) zugeführt und von welcher der Faden (F) durch eine Fadenabzugsöse (19) über Kopf abgezogen wird, wobei der Faden unter den Borsten oder dergleichen eines Bremsringes (26) her radial einwärts geleitet ist, dadurch gekennzeichnet, daß der Bremsring (26) mittels eines Druckluftzylinders (22) in eine Abstandsstellung zur Trommelmantelfläche bringbar ist und durch Federkraft wieder zurückstellbar ist.Delivery device for running threads, in particular for use on textile machines, such as looms or the like, with a storage drum (11), which is fed to the thread (F) in the rear area by means of a guide tube (9) encircling the storage drum and from which the thread (F) is pulled off overhead by a thread take-off eye (19), the thread being guided radially inwards under the bristles or the like of a brake ring (26), characterized in that the brake ring (26) is at a distance from the drum jacket surface by means of a compressed air cylinder (22) can be brought and can be reset by spring force. Liefervorrichtung nach Anspruch 1 oder insbesondere danach, dadurch gekennzeichnet, daß die Borsten (30) des Bremsringes (26) entsprechend der Mantelfläche (M) des Kopfkegels (16) ausgerichtet sind.Delivery device according to claim 1 or in particular according thereto, characterized in that the bristles (30) of the brake ring (26) are aligned in accordance with the lateral surface (M) of the head cone (16). Liefervorrichtung nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß der Bremsring auf einem Verschiebeschlitten (24) sitzt.Delivery device according to one or more of the preceding claims or in particular according thereto, characterized in that the brake ring sits on a sliding carriage (24). Liefervorrichtung nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, gekennzeichnet durch eine Einstellbarkeit des Bremsringes (26) zum Verschiebeschlitten (24) aus einer vom Kopfende her zugänglichen Stellschraube (27).Delivery device according to one or more of the preceding claims or in particular according thereto, characterized by an adjustability of the brake ring (26) to the sliding carriage (24) from an adjusting screw (27) accessible from the head end. Liefervorrichtung nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, daß die Kolbenstange (23) des Druckluftzylinders (22) an einem im Ausleger (21) längsverschieblich geführten Verschiebeschlitten (24) angreift.Delivery device according to one or more of the preceding claims or in particular according thereto, characterized in that the piston rod (23) of the compressed air cylinder (22) engages on a sliding carriage (24) which is guided in a longitudinally displaceable manner in the arm (21).
EP94119612A 1990-03-07 1990-12-10 Yarn delivering device Withdrawn EP0657379A2 (en)

Applications Claiming Priority (3)

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

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP90123730.5 Division 1990-12-10

Publications (1)

Publication Number Publication Date
EP0657379A2 true EP0657379A2 (en) 1995-06-14

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
EP90123730A Expired - Lifetime EP0446447B2 (en) 1990-03-07 1990-12-10 Yarn delivering device
EP94116058A Expired - Lifetime EP0659918B1 (en) 1990-03-07 1990-12-10 Yarn delivering device

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP90123730A Expired - Lifetime EP0446447B2 (en) 1990-03-07 1990-12-10 Yarn delivering device
EP94116058A Expired - Lifetime EP0659918B1 (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) ATE124732T1 (en)
BR (1) BR9100911A (en)
CZ (1) CZ281399B6 (en)
DE (3) DE4007131C2 (en)
ES (1) ES2074112T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0826619A1 (en) * 1996-09-03 1998-03-04 L.G.L. Electronics S.p.A. Quick-release retainer for the brake support of weft feeders for textile machines
EP1334941A1 (en) * 2002-02-01 2003-08-13 L.G.L. Electronics S.p.A. A device for retaining the brake holder support in weft feeders

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9117045U1 (en) * 1991-06-18 1995-05-11 Iro Ab Thread storage and delivery device
IT226136Y1 (en) * 1991-09-19 1997-04-18 Roy Electrotex Spa BUILDING IMPROVEMENTS FOR WEAVING FRAME FOR WEAVING FRAMES.
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 Co Gmbh Double-wire twisting spindle
TW286331B (en) * 1994-03-03 1996-09-21 Micron Instr
DE9406102U1 (en) * 1994-04-13 1995-08-10 Sobrevin 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
IT1280434B1 (en) * 1995-07-18 1998-01-20 Lgl Electronics Spa IMPROVED ELECTRO-PNEUMATIC DEVICE FOR AUTOMATIC THREADING OF WEFT FEEDER AND WEFT FEEDER
DE19533310A1 (en) * 1995-07-24 1997-01-30 Iro Ab Thread delivery device
WO1997003908A1 (en) * 1995-07-24 1997-02-06 Iro Ab Yarn feeding device
DE19533547A1 (en) * 1995-09-11 1997-03-13 Iro Ab Pneumatic valve device for a thread delivery device and thread delivery device
DE19609871A1 (en) * 1996-03-13 1997-09-18 Iro Ab Thread delivery device
IT1302068B1 (en) * 1998-02-26 2000-07-20 Lgl Electronics Spa METHOD AND DEVICE FOR PNEUMATIC THREADING OF WEFT EQUIPMENT TO TEXTILE MACHINES.
DE10107688A1 (en) * 2001-02-19 2002-08-29 Iro Patent Ag Baar Yarn feeder
DE10358283A1 (en) * 2003-12-12 2005-07-21 Iro Ab Thread measuring feeder
SE0400861D0 (en) * 2004-04-01 2004-04-01 Iropa Ag Yarn feeding device
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE759801A (en) * 1969-12-04 1971-05-17 Snia Viscosa IMPROVEMENTS MADE TO DEVICES FOR COLLECTING, VACUUMING AND DISPOSING OF TEXTILE FILAMENTS AND THREADS, AS WELL AS THE PERFECTED DEVICES OBTAINED
IT1133900B (en) * 1980-10-15 1986-07-24 Roy Electrotex Spa MEANS FOR BRAKING THE OUTPUT YARN IN CONSTANT AND ADJUSTABLE TENSION FEED DEVICES, PARTICULARLY FOR TEXTILE MACHINES
DE8712946U1 (en) * 1987-09-25 1987-12-10 Aktiebolaget Iro, Ulricehamn, Se
US4969489A (en) * 1988-07-14 1990-11-13 Nissan Motor Co., Ltd. Weft threading system for fluid jet loom using the storage drum winding arm
US5016680A (en) * 1989-03-03 1991-05-21 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Weft processing and releasing apparatus in a jet loom
IT1236993B (en) * 1989-12-29 1993-05-12 Roy Electrotex Spa WEFT FEEDER FOR WEAVING FRAMES WITH PLIERS AND BULLETS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0826619A1 (en) * 1996-09-03 1998-03-04 L.G.L. Electronics S.p.A. Quick-release retainer for the brake support of weft feeders for textile machines
EP1334941A1 (en) * 2002-02-01 2003-08-13 L.G.L. Electronics S.p.A. A device for retaining the brake holder support in weft feeders
CN100408738C (en) * 2002-02-01 2008-08-06 爱吉尔电子股份公司 Device for holding brake holding element support in weft yarn feeder

Also Published As

Publication number Publication date
ATE253134T1 (en) 2003-11-15
ATE124732T1 (en) 1995-07-15
CZ281399B6 (en) 1996-09-11
EP0659918A3 (en) 1997-11-19
JP3021712B2 (en) 2000-03-15
US5181544A (en) 1993-01-26
BR9100911A (en) 1991-11-05
EP0659918A2 (en) 1995-06-28
CN1026424C (en) 1994-11-02
EP0446447A1 (en) 1991-09-18
CN1054624A (en) 1991-09-18
EP0446447B1 (en) 1995-07-05
EP0659918B1 (en) 2003-10-29
ES2074112T3 (en) 1995-09-01
CS9100584A2 (en) 1991-09-15
DE4007131A1 (en) 1991-09-12
EP0446447B2 (en) 2000-11-22
DE4007131C2 (en) 1999-12-30
JPH04213561A (en) 1992-08-04
DE59010936D1 (en) 2003-12-04
DE59009377D1 (en) 1995-08-10

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