EP0127719A1 - Device for removing cut selvedges in a weaving machine - Google Patents

Device for removing cut selvedges in a weaving machine Download PDF

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Publication number
EP0127719A1
EP0127719A1 EP83810236A EP83810236A EP0127719A1 EP 0127719 A1 EP0127719 A1 EP 0127719A1 EP 83810236 A EP83810236 A EP 83810236A EP 83810236 A EP83810236 A EP 83810236A EP 0127719 A1 EP0127719 A1 EP 0127719A1
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EP
European Patent Office
Prior art keywords
channel
injector nozzle
fabric
edge
auxiliary edge
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Withdrawn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
EP83810236A
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German (de)
French (fr)
Inventor
Walter Küng
Stefan Svarc
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.)
Maschinenfabrik Sulzer Rueti AG
Maschinenfabrik Rueti AG
Original Assignee
Maschinenfabrik Sulzer Rueti AG
Maschinenfabrik Rueti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Sulzer Rueti AG, Maschinenfabrik Rueti AG filed Critical Maschinenfabrik Sulzer Rueti AG
Priority to EP83810236A priority Critical patent/EP0127719A1/en
Priority to US06/612,337 priority patent/US4549582A/en
Priority to BR8402711A priority patent/BR8402711A/en
Priority to JP59114005A priority patent/JPS6071743A/en
Publication of EP0127719A1 publication Critical patent/EP0127719A1/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/04—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials longitudinally
    • D06H7/06—Removing selvedge edges

Definitions

  • the invention relates to a device for pulling off separated fabric parts at the edge of a fabric produced on a weaving machine, e.g. of auxiliary edges or protruding weft ends.
  • an auxiliary edge is formed on the catch side of the fabric and is cut off with a cutting device, for example, the auxiliary edge is passed through two intermeshing gear wheels, whereby it e.g. gets into a waste container.
  • the auxiliary edge is sucked off by a suction nozzle on the edge of the fabric, which is connected to a fan.
  • the auxiliary edge is passed through a hose into a waste container.
  • auxiliary edges or weft ends are not suitable for fabrics which contain sensitive yarn in the weft and / or warp, for example threads made of glass fibers or particularly smooth, thin fibers, such as chemical fibers or the like.
  • tissue parts to be removed are destroyed, for example, in the known gear drives that pull them off.
  • the glass fibers break, loosen from the bandage of the auxiliary edge and fall down. They cannot then be collected in the waste bin.
  • sensitive yarns are only taken along with the effort of a strong air flow with a correspondingly high air consumption. There is a risk that the auxiliary edges will be blown away.
  • the invention has for its object to provide a particularly improved device in this regard.
  • the invention resides in a conically converging injector nozzle, which encloses the air radiation and surrounds the tissue part to be removed, in the region of the edge of the draining tissue.
  • auxiliary edges made of finer material without greater, own yarn strength of the auxiliary edge, e.g. Glass fiber / containing auxiliary edges to be peeled off.
  • the air consumption is relatively low, although particularly high air speeds can be generated in the injector nozzle. This can e.g. 140 to 150 m / sec. If such a flow rate of the suction air is to be achieved comparatively by a suction fan, an extremely high output of the suction fan in question is required, which leads to high operating costs.
  • the weaving machine 1 contains side cheeks 2, 3, a drive motor 4, a main shaft 5, a weft supply spool 8 remaining outside the shed, a weft mechanism 9, a catching mechanism 10, shafts 11, a reed 12, a fabric tree 14 and a turning device 16 on the catching side the machine 1.
  • the latter has an auxiliary edge 18 produced by the turning device 16, which after scraper stop 50 (FIG. 3) by means of scissors •)
  • the fabric 13 and the auxiliary edge 18 on the catch side are pulled off a goods take-off roller 19 in accordance with the arrows 21, 22. Subsequently, at the point 20, the auxiliary edge 18 is pulled off an injector nozzle designated as a whole by 25 and passed through a hose 26 into a waste container 27 according to arrow 28.
  • the fabric 13, after it has been freed from the auxiliary edge 18, is cut over deflection rollers 23, 24 * ) 60. according to arrow 29 on the rotating goods tree M according to arrow 31.
  • the injector nozzle 25 has a tube 33 which forms a withdrawal channel. According to arrow 35, compressed air is conducted via an air supply channel 36 into an annular arm 37 which is formed in an annular insert 38. From the annular space 37, the air passes into the duct 33 through a plurality of air supply elementary ducts 39 arranged on a circle according to arrows 41. The axes 42 of the ducts 39 are at an angle A of approximately 20 ° with respect to the axis 43 of the duct 33 directed to an intersection 45.
  • An axially displaceable taper insert 48 is inserted in the flow direction after the channels 39 with the interposition of seals 47, by means of which the air flow receives a Venturi acceleration.
  • the insert 48 is positioned so that its initial cone 49 encloses the point 45.
  • the auxiliary edge 18 introduced from the left in FIG. 4 consists of a central strand 52 containing a plurality of warp threads 51, in which cut weft ends 53 are woven and held by the leno weave 16 created by the leno device 16.
  • the weft ends 53 consist, for example - like the entire weft threads 6 - of glass fiber material, as a result of which the auxiliary edge 18 has only a very weak, inherent internal strength.
  • the ends 53 made of glass fiber material can break particularly easily and fall out of the central strand 52.
  • the auxiliary edge 18 is introduced in FIG. 4 through the air supplied through the elementary channels 39 into the injector nozzle 25 (arrow 28), the weft ends 53 due to the curvature 56 of the insert 38 come into the curved position 53a. In this they slide with their ends over the curved inner circumference of the insert 38.
  • the ends of the weft threads are transferred into the reverse curvature position 53b by the air flowing in from the elementary channels 39 and are transported or pushed further to the right in FIG. 4 by the flowing air.
  • the auxiliary edge 18 passes through the venturi insert 48 and is passed on according to arrow 61, specifically through the pipe 26 into the waste container 27.
  • air guide element channels 39a arranged skewed in the ring insert 38 are used, which generate a rotating flow according to the arrows 62 in the nozzle 25. It can thereby be achieved that the auxiliary edge 18 is twisted together by producing a so-called false wire and is thereby strengthened.
  • auxiliary edge 18 By carrying the auxiliary edge 18 by means of the individual air jets coming from the elementary channels 39, the auxiliary edges 18 with the particularly sensitive weft ends 53 are spared and are nevertheless subjected to a relatively strong entrainment effect. These thread ends 53 do not tend to break and cannot fall out of the strand 52, so that the auxiliary edge 18 can be diverted undamaged.
  • the pull-off injector nozzle 25 In another application of the pull-off injector nozzle 25, projecting weft ends that are to be cut are pulled off the shed 17. The injector nozzle 25 is then arranged directly at the point where the weft ends are cut off, preferably in the ver Extension of the weft line or the weft thread 6 (Fig. 3). The injector nozzle 25b can be positioned perpendicular to the weft thread 6, as indicated by the broken line in FIG. 3. The nozzle is then moved to position 25a and the weft thread to position 6a when the blade stops.
  • the air supply via the channels 36, 39 can take place continuously or in pulses according to a certain rhythm corresponding to the working cycle of the weaving machine, preferably at the time the weft threads arrive on the catching side of the weaving machine in the catch mechanism 10.
  • a device corresponding to the lathe device 16 and an injector nozzle 25 for pulling off an auxiliary edge or weft thread ends can also be provided on the side of the weft mechanism 9.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)

Abstract

Die Vorrichtung enthält z.B. an der Warenabzugswalze (19) eine Injektordüse (25). Diese besitzt mehrere, in einen die abzuziehende Hilfskante (18) umschliessenden Abziehkanal (33) mündende Luftzuführungs-Elementarkanäle (39). Durch die aus diesen kommende Luft wird die Hilfskante (18) durch die Injektordüse (25) gezogen und über einen Schlauch (26) in einen Abfallbehälter (27) geleitet. Die Injektordüse zum Abziehen von abgeschnittenen Gewebeteilen eignet sich besonders für empfindliche Materialien, z.B. für Glasfasergarne. Wenn beispielsweise die Hilfskante (18) abgeschnittene Schussfadenenden (53) aus Glasfasermaterial enthält, sind diese aufgrund der Injektorabziehdüse (25) besonders gegen Brechen geschont.The device contains e.g. an injector nozzle (25) on the goods take-off roller (19). This has a plurality of air supply element channels (39) opening into a pull channel (33) which surrounds the auxiliary edge (18) to be removed. Due to the air coming from the latter, the auxiliary edge (18) is drawn through the injector nozzle (25) and passed through a hose (26) into a waste container (27). The injector nozzle for pulling off cut tissue parts is particularly suitable for sensitive materials, e.g. for fiberglass yarns. If, for example, the auxiliary edge (18) contains cut weft ends (53) made of glass fiber material, these are particularly protected against breaking due to the injector pull-off nozzle (25).

Description

Die Erfindung betrifft eine Vorrichtung zum Abziehen von abgetrennten Gewebeteilen am Rand eines auf einer Webmaschine hergestellten Gewebes, z.B. von Hilfskanten oder herausragenden Schussfaden-Enden.The invention relates to a device for pulling off separated fabric parts at the edge of a fabric produced on a weaving machine, e.g. of auxiliary edges or protruding weft ends.

Bei bisherigen Webmaschinen wird, wenn z.B. eine Hilfskante auf der Fangseite des Gewebes gebildet und etwa mit einer Schneidvorrichtung abgeschnitten wird, die Hilfskante durch zwei miteinander kämmende Zahnräder geleitet, wodurch sie z.B. in einen Abfallbehälter gelangt.With previous weaving machines, e.g. an auxiliary edge is formed on the catch side of the fabric and is cut off with a cutting device, for example, the auxiliary edge is passed through two intermeshing gear wheels, whereby it e.g. gets into a waste container.

Bei anderen bekannten Maschinen wird die Hilfskante durch eine Saugdüse am Rande des Gewebes abgesaugt, welche an einen Ventilator angeschlossen ist. Die Hilfskante wird durch einen Schlauch in einen Abfallbehälter geleitet.In other known machines, the auxiliary edge is sucked off by a suction nozzle on the edge of the fabric, which is connected to a fan. The auxiliary edge is passed through a hose into a waste container.

In ähnlicher Weise werden bei bekannten Webmaschinen herausragende, abgeschnittene Schussfadenenden abgesaugt und in einen Abfallbehälter geleitet.In a similar manner, in the case of known weaving machines, protruding, cut weft ends are sucked off and passed into a waste container.

Die bekannten Abziehvorrichtungen für den Abtransport abgetrennter Gewebeteile, insbesondere von Hilfskanten oder Schussfadenenden eignen sich nicht für Gewebe, welche in Schuss und/oder Kette empfindliches Garn, z.B. Fäden aus Glasfasern oder besonders glatten, dünnen Fasern, etwa Chemiefasern oder dergleichen enthalten. Solche abzuführende Gewebeteile werden etwa in den sie abziehenden, bekannten Zahnradgetrieben zerstört. Die Glasfasern zerbrechen, lösen sich aus dem Verband der Hilfskante und fallen herunter. Sie können dann nicht im Abfallbehälter gesammelt werden. In einer Saugdüse werden empfindliche Garne nur unter Aufwand kräftiger Luftströmung mit entsprechend grossem Luftverbrauch mitgenommen. Dabei besteht die Gefahr, dass die Hilfskanten zerblasen werden.The known pulling devices for the removal of separated tissue parts, in particular auxiliary edges or weft ends are not suitable for fabrics which contain sensitive yarn in the weft and / or warp, for example threads made of glass fibers or particularly smooth, thin fibers, such as chemical fibers or the like. Such tissue parts to be removed are destroyed, for example, in the known gear drives that pull them off. The glass fibers break, loosen from the bandage of the auxiliary edge and fall down. They cannot then be collected in the waste bin. In a suction nozzle, sensitive yarns are only taken along with the effort of a strong air flow with a correspondingly high air consumption. There is a risk that the auxiliary edges will be blown away.

Der Erfindung liegt die Aufgabe zugrunde, eine besonders in dieser Hinsicht verbesserte Vorrichtung zu schaffen.The invention has for its object to provide a particularly improved device in this regard.

Die Erfindung liegt in einer konisch zusammenlaufende, den abzuziehenden Gewebeteil umschliessende Luftstrahlung erzeugenden Injektordüse im Bereich der Kante des ablaufenden Gewebes.The invention resides in a conically converging injector nozzle, which encloses the air radiation and surrounds the tissue part to be removed, in the region of the edge of the draining tissue.

Wie der Versuch zeigt, wird es hierdurch möglich, auch aus feinerem Material bestehende Hilfskanten ohne grössere, garne eigene Festigkeit der Hilfskante, wie z.B. Glasfaser/enthaltende Hilfskanten, abzuziehen. Der Luftverbrauch ist dabei relativ gering, obwohl besonders hohe Luftgeschwindigkeit in der Injektordüse erzeugt werden kann. Diese kann z.B. 140 bis 150 m/sec betragen. Soll vergleichsweise durch einen Absaugventilator eine derartige Strömungsgeschwindigkeit der Absaugluft erzielt werden, so ist eine äusserst grosse Leistung des betreffenden Absaugventilators erforderlich, was zu hohen Betriebskosten führt.As the experiment shows, this makes it possible to also make auxiliary edges made of finer material without greater, own yarn strength of the auxiliary edge, e.g. Glass fiber / containing auxiliary edges to be peeled off. The air consumption is relatively low, although particularly high air speeds can be generated in the injector nozzle. This can e.g. 140 to 150 m / sec. If such a flow rate of the suction air is to be achieved comparatively by a suction fan, an extremely high output of the suction fan in question is required, which leads to high operating costs.

Weitere Merkmale ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit den Ansprüchen und der Zeichnung.

  • Fig. 1 zeigt eine mit der Erfindung ausgestattete Webmaschine von der Warenseite her gesehen, in schematischer Darstellung,
  • Fig. 2 veranschaulicht die Anordnung der Abziehvorrichtung in grösserem Massstab,
  • Fig. 3 ist eine zugehörige Seitenansicht,
  • Fig. 4 veranschaulicht die erfindungsgemässe Vorrichtung in einem Längsschnitt, in grösserem Massstab, und
  • Fig. 5 erläutert ein Detail einer abgewandelten Ausführungsform.
Further characteristics result from the following description Exercise of embodiments in connection with the claims and the drawing.
  • 1 shows a loom equipped with the invention seen from the goods side, in a schematic representation,
  • 2 illustrates the arrangement of the puller on a larger scale,
  • 3 is an associated side view,
  • Fig. 4 illustrates the device according to the invention in a longitudinal section, on a larger scale, and
  • 5 explains a detail of a modified embodiment.

Die Webmaschine 1 enthält Seitenwangen 2,3, einen Antriebsmotor 4, eine Hauptwelle 5, eine ausserhalb des Webfaches verbleibende Schussfadenvorratsspule 8, ein Schusswerk 9, ein Fangwerk 10, Schäfte 11, ein Riet 12, einen Warenbaum 14 und eine Drehereinrichtung 16 auf der Fangseite der Maschine 1. Von der Spule 8 wird z.B. mittels eines Projektils 7 oder mittels eines Luftstrahles Schussfaden 6 in das Webfach 17 eingetragen und das Gewebe 13 erzeugt. Dieses besitzt an dem fangseitigen Ende 15 eine durch die Drehereinrichtung 16 erzeugte Hilfskante 18, die nach dem Blattanschlag 50 (Fig. 3) mittels Schere •)The weaving machine 1 contains side cheeks 2, 3, a drive motor 4, a main shaft 5, a weft supply spool 8 remaining outside the shed, a weft mechanism 9, a catching mechanism 10, shafts 11, a reed 12, a fabric tree 14 and a turning device 16 on the catching side the machine 1. From the coil 8, for example by means of a projectile 7 or by means of an air jet, weft thread 6 is inserted into the shed 17 and the fabric 13 is produced. At the end 15 on the catch side, the latter has an auxiliary edge 18 produced by the turning device 16, which after scraper stop 50 (FIG. 3) by means of scissors •)

Das Gewebe 13 und die fangseitige Hilfskante 18 werden von einer Warenabzugswalze 19 entsprechend den Pfeilen 21,22 abgezogen. Anschliessend wird an der Stelle 20 die Hilfskante 18 von einer als Ganzes mit 25 bezeichneten Injektordüse abgezogen und durch einen Schlauch 26 in einen Abfallbehälter 27 entsprechend Pfeil 28 geleitet.The fabric 13 and the auxiliary edge 18 on the catch side are pulled off a goods take-off roller 19 in accordance with the arrows 21, 22. Subsequently, at the point 20, the auxiliary edge 18 is pulled off an injector nozzle designated as a whole by 25 and passed through a hose 26 into a waste container 27 according to arrow 28.

Nach der Abziehstelle 20 wird das Gewebe 13, nachdem es von der Hilfskante 18 befreit ist, über Umlenkwalzen 23,24 *) 60 geschnitten wird.
entsprechend Pfeil 29 auf den gemäss Pfeil 31 rotierenden Warenbaum M gewickelt.After the peeling point 20, the fabric 13, after it has been freed from the auxiliary edge 18, is cut over deflection rollers 23, 24 * ) 60.
according to arrow 29 on the rotating goods tree M according to arrow 31.

Die Injektordüse 25 besitzt ein Rohr 33, das einen Abziehkanal bildet. Gemäss Pfeil 35 wird Druckluft über einen Luftzuführungskanal 36 in einen Ringarm 37 geleitet, der in einem ringförmigen Einsatz 38 gebildet ist. Von dem Ringraum 37 aus gelangt die Luft durch mehrere, auf einem Kreis angeordnete Luftzuführungs-Elementarkanäle 39 entsprechend Pfeilen 41 in den Kanal 33. Die Achsen 42 der Kanäle 39 sind unter Bildung eines Winkels A von ca. 20° gegenüber der Achse 43 des Kanals 33 auf einen Schnittpunkt 45 gerichtet.The injector nozzle 25 has a tube 33 which forms a withdrawal channel. According to arrow 35, compressed air is conducted via an air supply channel 36 into an annular arm 37 which is formed in an annular insert 38. From the annular space 37, the air passes into the duct 33 through a plurality of air supply elementary ducts 39 arranged on a circle according to arrows 41. The axes 42 of the ducts 39 are at an angle A of approximately 20 ° with respect to the axis 43 of the duct 33 directed to an intersection 45.

In Strömungsrichtung nach den Kanälen 39 ist unter Zwischenlage von Dichtungen 47 ein axial verschiebbarer Verjüngungseinsatz 48 eingeschoben, durch den die Luftströmung eine Venturi-Beschleunigung erhält. Der Einsatz 48 ist so positioniert, dass sein Anfangkonus 49 den Punkt 45 umschliesst.An axially displaceable taper insert 48 is inserted in the flow direction after the channels 39 with the interposition of seals 47, by means of which the air flow receives a Venturi acceleration. The insert 48 is positioned so that its initial cone 49 encloses the point 45.

Die in Fig. 4 von links eingeleitete Hilfskante 18 besteht aus einem mehrere Kettfäden 51 enthaltenden Mittelstrang 52, in dem abgeschnittene Schussfadenenden 53 einvon gewebt und durch die/Drehervorrichtung 16 erzeugte Dreherbindung gehalten sind. Die Schussfadenenden 53 bestehen beispielsweise -- wie die gesamten Schussfäden 6 -- aus Glasfasermaterial, wodurch die Hilfskante 18 nur eine sehr schwache, eigene, innere Festigkeit besitzt. Die Enden 53 aus Glasfasermaterial können besonders leicht brechen und aus dem Mittelstrang 52 herausfallen.The auxiliary edge 18 introduced from the left in FIG. 4 consists of a central strand 52 containing a plurality of warp threads 51, in which cut weft ends 53 are woven and held by the leno weave 16 created by the leno device 16. The weft ends 53 consist, for example - like the entire weft threads 6 - of glass fiber material, as a result of which the auxiliary edge 18 has only a very weak, inherent internal strength. The ends 53 made of glass fiber material can break particularly easily and fall out of the central strand 52.

Die Hilfskante 18 wird in Fig. 4 durch die durch die Elementarkanäle 39 zugeführte Luft in die Injektordüse 25 eingeleitet (Pfeil 28), wobei die Schussfadenenden 53 infolge der Krümmung 56 des Einsatzes 38 in die gekrümmte Position 53a gelangen. In dieser gleiten sie mit ihren Enden über den gekrümmten Innenumfang des Einsatzes 38.The auxiliary edge 18 is introduced in FIG. 4 through the air supplied through the elementary channels 39 into the injector nozzle 25 (arrow 28), the weft ends 53 due to the curvature 56 of the insert 38 come into the curved position 53a. In this they slide with their ends over the curved inner circumference of the insert 38.

Nach Verlassen dieses Einsatzes 38 werden die Schussfaden- enden durch die aus den Elementarkanälen 39 einströmende Luft in die umgekehrte Krümmungsposition 53b überführt und von der strömenden Luft in Fig. 4 nach rechts weiter transportiert bzw. geschoben. In dieser Form gelangt die Hilfskante 18 durch den Venturi-Einsatz 48 und wird gemäss Pfeil 61 weitergeleitet, und zwar durch das Rohr 26 in den Abfallbehälter 27.After leaving this insert 38, the ends of the weft threads are transferred into the reverse curvature position 53b by the air flowing in from the elementary channels 39 and are transported or pushed further to the right in FIG. 4 by the flowing air. In this form, the auxiliary edge 18 passes through the venturi insert 48 and is passed on according to arrow 61, specifically through the pipe 26 into the waste container 27.

Bei dem abgewandelten Ausführungsbeispiel nach Fig. 5 sind windschief in dem Ringeinsatz 38 angeordnete Luftführungs-Elementarkanäle 39a verwendet, die entsprechend den Pfeilen 62 in der Düse 25 eine rotierende Strömung erzeugen. Dadurch kann erzielt werden, dass die Hilfskante 18 durch Erzeugung eines sogenannten Falschdrahtes zusammengedreht und dadurch gefestigt wird.In the modified exemplary embodiment according to FIG. 5, air guide element channels 39a arranged skewed in the ring insert 38 are used, which generate a rotating flow according to the arrows 62 in the nozzle 25. It can thereby be achieved that the auxiliary edge 18 is twisted together by producing a so-called false wire and is thereby strengthened.

Durch die Mitnahme der Hilfskante 18 mittels der aus den Elementarkanälen 39 kommenden Einzelluftstrahlen werden die Hilfskanten 18 mit den besonders empfindlichen Schussfaden-Enden 53 geschont und trotzdem einer relativ starken Mitnahmewirkung unterzogen. Diese Fadenenden 53 neigen nicht zum Bruch und können nicht aus dem Strang 52 herausfallen, so dass die Hilfskante 18 unversehrt abgeleitet werden kann.By carrying the auxiliary edge 18 by means of the individual air jets coming from the elementary channels 39, the auxiliary edges 18 with the particularly sensitive weft ends 53 are spared and are nevertheless subjected to a relatively strong entrainment effect. These thread ends 53 do not tend to break and cannot fall out of the strand 52, so that the auxiliary edge 18 can be diverted undamaged.

Bei einer anderen Anwendungasrt der Abzieh-Injektordüse 25 werden aus dem Webfach 17 herausragende, abzuschneidende Schussfadenenden abgezogen. Die Injektordüse 25 ist dann unmittelbar an der Stelle, wo die Schussfadenenden abgeschnitten werden, angeordnet, vorzugsweise in der Verlängerung der Schusslinie bzw. des Schussfadens 6 (Fig. 3). Dabei kann die Injektordüse 25b senkrecht zum Schussfaden 6 gestellt sein, wie in Fig. 3 gestrichelt angedeutet ist. Die Düse wird dann beim Blattanschlag in die Position 25a und der Schussfaden in die Stellung 6a bewegt.In another application of the pull-off injector nozzle 25, projecting weft ends that are to be cut are pulled off the shed 17. The injector nozzle 25 is then arranged directly at the point where the weft ends are cut off, preferably in the ver Extension of the weft line or the weft thread 6 (Fig. 3). The injector nozzle 25b can be positioned perpendicular to the weft thread 6, as indicated by the broken line in FIG. 3. The nozzle is then moved to position 25a and the weft thread to position 6a when the blade stops.

Die Luftzuführung über die Kanäle 36,39 kann kontinuierlich oder impulsweise gemäss einem bestimmten Rhythmus entsprechend dem Arbeitsspiel der Webmaschine, vorzugsweise zur Zeit des Eintreffens der Schussfäden auf der Fangseite der Webmaschine im Fangwerk 10 erfolgen. Es kann auch auf der Seite des Schusswerkes 9 eine der Drehervorrichtung 16 entsprechende Einrichtung und eine Injektordüse 25 zum Abziehen einer Hilfskante oder von Schussfadenenden vorgesehen sein.The air supply via the channels 36, 39 can take place continuously or in pulses according to a certain rhythm corresponding to the working cycle of the weaving machine, preferably at the time the weft threads arrive on the catching side of the weaving machine in the catch mechanism 10. A device corresponding to the lathe device 16 and an injector nozzle 25 for pulling off an auxiliary edge or weft thread ends can also be provided on the side of the weft mechanism 9.

Claims (7)

1. Vorrichtung zum Abziehen von abgetrennten Gewebeteilen am Rand eines auf einer Webmaschine.(1) hergestellten Gewebes (13), z.B. von Hilfskanten (18) oder herausragenden Schussfaden-Enden, gekennzeichnet durch eine eine konisch zusammenlaufende, den abzuziehenden Gewebeteil (18) umschliessende Luftstrahlung (41) erzeugende Injektordüse (25) im Bereich der Kante (15) des ablaufenden Gewebes (13).1.Device for pulling off separated fabric parts at the edge of a fabric (13) produced on a weaving machine (1), e.g. auxiliary edges (18) or protruding weft ends, characterized by an injector nozzle (25) producing a conical converging air jet (41) surrounding the tissue part (18) to be pulled off in the region of the edge (15) of the running fabric (13). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Injektordüse (25) einen die abzuziehenden Gewebeteile (18) umschliessenden Abziehkanal (33) enthält, in welchem mehrere , einzelne vom Webfach (17) weg gerichtete Luftzuführungs-Elementarkanäle (39) angeordnet sind.2. Device according to claim 1, characterized in that the injector nozzle (25) contains a pull-off channel (33) enclosing the tissue parts (18) to be removed, in which a plurality of individual air supply elementary channels (39) directed away from the shed (17) are arranged . 3. Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Elementarkanäle (39) einen spitzen Winkel (A) z.B. von 20° zur Abziehkanalachse (43) bilden.3. Device according to claims 1 and 2, characterized in that the elementary channels (39) an acute angle (A) e.g. form from 20 ° to the extraction channel axis (43). 4. Vorrichtung nach einem der vorgesehenen Ansprüche,dadurch gekennzeichnet, dass -- in Strömungsrichtung -- nach den Elementarkanälen (39) in dem Abziehkanal (33) eine Verengung (49) zur Bildung einer Venturi-Beschleunigung vorgesehen ist.4. Device according to one of the provided claims, characterized in that - in the direction of flow - after the elementary channels (39) in the draw-off channel (33) a narrowing (49) is provided to form a venturi acceleration. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Abziehkanalverjüngung (49) durch einen separaten, in den Abziehkanal (33) eingeschobenen, in Achsrichtung (43) des Abziehkanals (33) verschiebbaren Venturi-Einsatz (48) gebildet ist.5. The device according to claim 4, characterized in that the extraction channel taper (49) is formed by a separate venturi insert (48) which is pushed into the extraction channel (33) and can be displaced in the axial direction (43) of the extraction channel (33). 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Schnittpunkt (45) der Achse (42) der Elementarkanäle (39) -- in Strömungsrichtung -- am Anfang der Venturi-Verjüngung (49) liegt.6. The device according to claim 5, characterized in that the intersection (45) of the axis (42) of the elementary channels (39) - in the direction of flow - at the beginning of the venturi taper (49). 7. Vorrichtung nach Anspruch 2 oder einem der folgenden, dadurch gekennzeichnet, dass die Elementarkanäle (39a) windschief zur Achse (43 des Abziehkanals (33) angeordnet sind zur Bildung eines auf die abzuziehenden Gewebeteile (18) einwirkenden Dralles.7. The device according to claim 2 or one of the following, characterized in that the elementary channels (39a) skew to the axis (43 of the pull-off channel (33) are arranged to form a twist acting on the fabric parts (18) to be removed.
EP83810236A 1983-06-06 1983-06-06 Device for removing cut selvedges in a weaving machine Withdrawn EP0127719A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP83810236A EP0127719A1 (en) 1983-06-06 1983-06-06 Device for removing cut selvedges in a weaving machine
US06/612,337 US4549582A (en) 1983-06-06 1984-05-21 Apparatus for removing severed fabric parts from a weaving machine
BR8402711A BR8402711A (en) 1983-06-06 1984-06-05 DEVICE FOR THE REMOVAL OF CUTTED TISSUE SECTIONS ON THE EDGE OF A FABRIC PRODUCED IN A TEAR
JP59114005A JPS6071743A (en) 1983-06-06 1984-06-05 Apparatus for cutting part of cloth cut from loom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83810236A EP0127719A1 (en) 1983-06-06 1983-06-06 Device for removing cut selvedges in a weaving machine

Publications (1)

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EP0127719A1 true EP0127719A1 (en) 1984-12-12

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Application Number Title Priority Date Filing Date
EP83810236A Withdrawn EP0127719A1 (en) 1983-06-06 1983-06-06 Device for removing cut selvedges in a weaving machine

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US (1) US4549582A (en)
EP (1) EP0127719A1 (en)
JP (1) JPS6071743A (en)
BR (1) BR8402711A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0906978A2 (en) * 1997-10-02 1999-04-07 Lindauer Dornier Gesellschaft M.B.H Method and device for obtaining pure weft waste of catch selvedges
DE19743611A1 (en) * 1997-10-02 1999-04-15 Dornier Gmbh Lindauer Fabric catch selvage removal
US6039086A (en) * 1997-10-02 2000-03-21 Lindauer Dornier Gesellschaft Mbh Separating weft thread waste of a single uncontaminated material from untwisted leno binding threads in trimmed catch selvages

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
DE19545839C1 (en) * 1995-12-08 1996-08-29 Dornier Gmbh Lindauer Air jet loom with weft thread auxiliary suction nozzle saves material
CN1105002C (en) * 1998-04-07 2003-04-09 纳幕尔杜邦公司 Static chopper for thin webs
JP2000328399A (en) * 1999-05-19 2000-11-28 Tsudakoma Corp Weft top-processing method and device therefor
FR2842795B1 (en) * 2002-07-23 2004-10-01 Additif DEVICE FOR CONDITIONING CONTINUOUS STRIPS OF MATERIAL SUCH AS EDGES GENERATED ON THERMOFORMING UNITS

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US3175588A (en) * 1963-03-15 1965-03-30 Burlington Industries Inc Filling tail removal equipment
DE2620894A1 (en) * 1975-08-25 1977-03-10 Elitex Zavody Textilniho DEVICE FOR DISCHARGING ROTARY WASTE FROM WEB MACHINES
DE2845299A1 (en) * 1978-05-17 1979-11-22 Rossville Mills Inc CONTACTORLESS WEB MACHINE

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0906978A2 (en) * 1997-10-02 1999-04-07 Lindauer Dornier Gesellschaft M.B.H Method and device for obtaining pure weft waste of catch selvedges
DE19743611A1 (en) * 1997-10-02 1999-04-15 Dornier Gmbh Lindauer Fabric catch selvage removal
DE19743612A1 (en) * 1997-10-02 1999-04-15 Dornier Gmbh Lindauer Method and device for producing sorted weft thread waste from catch strips
EP0918103A2 (en) * 1997-10-02 1999-05-26 Lindauer Dornier Gesellschaft M.B.H Method and device for obtaining pure weft waste of catch selvedges
EP0906978A3 (en) * 1997-10-02 2000-03-15 Lindauer Dornier Gesellschaft M.B.H Method and device for obtaining pure weft waste of catch selvedges
EP0918103A3 (en) * 1997-10-02 2000-03-15 Lindauer Dornier Gesellschaft M.B.H Method and device for obtaining pure weft waste of catch selvedges
US6039086A (en) * 1997-10-02 2000-03-21 Lindauer Dornier Gesellschaft Mbh Separating weft thread waste of a single uncontaminated material from untwisted leno binding threads in trimmed catch selvages
DE19743612C2 (en) * 1997-10-02 2001-01-11 Dornier Gmbh Lindauer Method and device for producing sorted weft thread waste from catch strips
DE19743611C2 (en) * 1997-10-02 2001-05-23 Dornier Gmbh Lindauer Method and device for producing sorted weft thread waste from catch strips

Also Published As

Publication number Publication date
US4549582A (en) 1985-10-29
JPS6071743A (en) 1985-04-23
BR8402711A (en) 1985-05-14

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