EP0799339A1 - Ribbon loom - Google Patents

Ribbon loom

Info

Publication number
EP0799339A1
EP0799339A1 EP95940108A EP95940108A EP0799339A1 EP 0799339 A1 EP0799339 A1 EP 0799339A1 EP 95940108 A EP95940108 A EP 95940108A EP 95940108 A EP95940108 A EP 95940108A EP 0799339 A1 EP0799339 A1 EP 0799339A1
Authority
EP
European Patent Office
Prior art keywords
weft
weft thread
ribbon loom
needle
loom according
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.)
Granted
Application number
EP95940108A
Other languages
German (de)
French (fr)
Other versions
EP0799339B1 (en
Inventor
Francisco Speich
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.)
Textilma AG
Original Assignee
Textilma 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 Textilma AG filed Critical Textilma AG
Publication of EP0799339A1 publication Critical patent/EP0799339A1/en
Application granted granted Critical
Publication of EP0799339B1 publication Critical patent/EP0799339B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34Handling the weft between bulk storage and weft-inserting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00Forwarding filamentary material
    • B65H51/20Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/205Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage by means of a fluid
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D35/00Smallware looms, i.e. looms for weaving ribbons or other narrow fabrics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a ribbon loom according to the preamble of claim 1.
  • Ribbon weaving machines of the type mentioned at the outset are known in a variety of forms, for example from GB-B-2 039 547.
  • the ribbon weaving machine contains a weft insertion needle to which a weft thread feed device is assigned which, viewed in the running direction of the weft thread, contains a weft thread source le, a weft brake, a weft conveying device and a weft compensation device.
  • the weft compensation device is formed by a leg spring that oscillates back and forth between a first and a second position. In the first position, the leg spring releases the weft thread for inserting a weft thread loop into a shed using the weft insertion needle.
  • the leg spring assumes the second position, in which it receives a weft thread supply and finally clamps the weft thread in a gap formed by a leaf spring in order to prevent further conveyance.
  • the weft thread is tensioned again and the leg spring is removed from the second moved to the first position, at the same time the weft is released from the clamping leaf spring.
  • This compensation device has the disadvantage that it is relatively sluggish, sc. That a belt loom equipped with it is limited in its drive speed, the insertion and removal of the weft thread on the braking leaf spring further limiting the performance of the belt loom.
  • Ribbon looms with such mechanical compensation devices have the disadvantage that their performance, that is to say their maximum speed, is limited to 2,500 rpm. If such a belt loom is operated at a higher speed, serious problems arise.
  • the leg springs can break and / or they come into a critical vibration range in which the tension of the weft thread can no longer be controlled. Natural vibrations and inertia forces require a higher spring force, which can be greater than the tearing force of the weft thread to be processed. As a result of the necessary greater leg spring force, the service life of the tongue knitting needles drops to 1/2 hour.
  • tongue knitting needles also called tongue needles.
  • tongue knitting needles are only suitable up to speeds of 2,500 rpm. At higher speeds, breaks occur on the hooks and tongues as a result of the high acceleration when the tongues are turned.
  • the service life of the tongue knitting needles at speeds of 2,500 to 4,000 rpm is approximately 1 to 4 hours, which is not practical in practice. Presentation of the invention
  • the object of the invention is to design a ribbon loom of the type mentioned in the introduction in such a way that it enables higher performance.
  • the compensation device is designed to operate pneumatically as a blowing and / or suction device results in a ribbon loom, the weft thread compensation device of which is practically massless or is limited to the mass of the weft thread to be treated.
  • the tension of the weft thread can thus be kept absolutely constant and at its lowest value, whereby this tension can be subtly adapted to the conditions given by the weft thread material and / or the weaving conditions by means of preferably adjustable components of the feed device.
  • the retraction tension required for a perfect ribbon weaving machine for the inserted weft thread loop can thus be exactly maintained and the magnitude of the tension can be regulated by a preferably adjustable guide eye. This opens up new dimensions for the performance of a belt loom, which, in contrast to the known belt looms, can now be operated at a significantly higher speed of 3,000 to 6,000 rpm, for example.
  • a configuration according to claim 2 is particularly advantageous, as a result of which the stretching of the weft thread can be adjusted according to claim 12 by means of the guide eyelet.
  • the one according to is particularly advantageous Claim 3, since the chamber ensures an exact guidance of the weft thread, so that the action of the air flow on the weft thread can also be exactly determined and controlled.
  • a preferred embodiment of the chamber is described in claim 4.
  • the development according to claim 5 improves the monitoring of the weft thread in the chamber.
  • Claim 6 describes a further possibility of designing the compensation device.
  • the configurations of the ribbon loom according to claims 7 to 9 contribute to a more subtle control of the weft thread and thus the adaptation to the thread quality on the one hand and the weaving conditions on the other hand.
  • the feed device for the weft thread is advantageously adjustable in such a way that the weft thread is stretched both when the weft insertion needle is extended and when it is retracted. As a result, not only is the weft thread supply required when the weft thread is inserted particularly small, but also any vibrations of the weft thread during the insertion cycle are prevented, which would put a strain on the weft thread and would impair the weaving process.
  • the stretching of the weft thread is preferably adjusted by means of the weft thread conveying device when the weft insertion needle is retracted and extended.
  • the stretching of the weft thread when the weft insertion needle is extended and retracted is preferably carried out by means of the guide eye according to claim 12, the selvedges are always tensioned to the set bandwidth and kept at an exactly constant width.
  • a wide variety of knitting needles can be used to tie the weft thread loop after it has been entered into the shed up to the current speeds (up to 3,000 rpm) of the ribbon looms Switch needles and crochet needles.
  • the pusher knitting needle, or pusher needle for short is practically the only construction element which not only enables perfect function but also offers the required service life. Since the slide needle has no tongue, the problems associated therewith are completely eliminated.
  • the arrangement with a common pivot axis according to claim 14 for the hook and the slide part enables an exact running of both parts. The wear is practically completely eliminated.
  • the two parts can also be adjusted very precisely to one another and the value once set is kept constant during the operation of the belt loom.
  • the safety of the weft thread and any auxiliary thread is flawlessly given at the highest speed, since the slide needle is inevitably opened and closed. It when the slide needle is configured according to claim 15 is particularly advantageous.
  • FIG. 1 shows the weft feeding device of a ribbon loom in the illustration in the manner of a block diagram with the weft insertion needle extended;
  • FIG. 2 shows the weft feed device of FIG. 1 with a modified knitting needle and when the weft thread begins to be inserted
  • FIG. 3 shows the weft feed device of FIG. 2 with the weft loop inserted
  • Figure 4 shows a first weft compensating device in a schematic representation
  • FIG. 5 shows a second weft compensating device in a schematic representation
  • FIG. 6 shows a third weft compensating device in cross section to the running direction of the weft
  • FIG. 7 the weft compensation device of FIG. 6 in section VII-VII of FIG. 6;
  • Figure 8 shows a needle device
  • FIG. 9 the head of the slide needle in the opened state, in section along the slide and on a larger scale
  • Figure 10 shows the head of the pusher needle
  • Figure 11 shows the head of the needle of the figure
  • FIGs 1 to 3 show essential components of a ribbon loom in the manner of a block diagram in different operating states of the weft insertion needle.
  • the belt weaving machine has a reed 2, which strikes a weft loop 4, which has been inserted into a shed made of warp threads 6, against a fabric edge 10.
  • the side of the material web 16 that is to say the manufactured tape, facing away, a knitting needle 18 is arranged, which serves to bind the weft loop 4.
  • the knitting needle is designed as a latch needle and in Figures 2 and 3 as a sliding needle 18a, which is further explained below with reference to Figures 8 to 11.
  • a weft thread 20 is fed to the weft insertion needle 12 by means of a feed device 22.
  • a weft thread bobbin serves as the weft thread source 24, from which the weft thread 20 arrives, for example via an adjustable thread brake 26, to a conveying device 28 which continuously conveys the weft thread 20 at an adjustable speed. From there, the weft thread reaches a pneumatically operating compensation device 32 via a preferably optically designed weft monitor 30 and further via a position-adjustable guide eyelet 34 to the weft insertion needle 12.
  • the weft monitor can also be connected downstream of the compensation device 32.
  • the pneumatically operating compensating device 32 has a blowing device 36 and / or suction device 38 which interacts with the weft thread.
  • the blowing device 36 contains a blowing nozzle 40, which is connected to a line 42 via a Blower device 44 is connected, which generates compressed air 45.
  • the suction device 38 is equipped with a suction nozzle 46, which is connected via a line 48 to the suction side of a blower device 50 and generates suction air 49.
  • the compensating device 32 is shown both with a blowing device 36 and with a suction device 38, wherein the suction air 49 is formed by sucked in ambient air 51.
  • FIGS. 2 and 3 only one suction device 38 is used, which is described in more detail with reference to FIGS. 6 and 7.
  • the pneumatic compensation device 32 serves on the one hand to accommodate a supply of weft threads, which is caused by the intermittent weft thread withdrawal when the weft thread loop is introduced into the shed.
  • the compensating device also serves to give the weft the tensile stress required for the insertion of the weft loop into the shed.
  • the weft insertion needle is in the extended position, in which the weft thread forms a retraction loop 54 between the fabric edge 52 and the guide eye 34 for tightening the knitting loop 56.
  • the weft loop 4 entered in the shed 8 is also struck on the edge 10 of the goods.
  • the insertion movement of the weft insertion needle 12 also begins when the reed 2 is pivoted back.
  • FIG. 2 shows the position of the weft insertion needle as it passes through the guide eyelet 34 before the insertion of the weft thread loop
  • the components of the feed device and in particular the compensating device 32 are set such that the weft thread runs in a straight line between the guide eye 34 and the fabric edge 52, the excess length of the weft thread being absorbed by the compensating device 32.
  • Dashed lines indicate how the weft thread course 58 would be if there was insufficient weft thread tension.
  • the conveyor 28 is set in such a way that at this stage a weft thread supply 60 has formed in the compensation device 32, which is used up during the insertion of the weft thread loop into the shed shown in FIG. In the phase shown in FIG.
  • the weft insertion needle has inserted the weft thread loop 4 into the shed 8 in such a way that the weft thread for stitch formation is inserted into the knitting needle 18a when the weft thread loop is tied.
  • the components, in particular the compensating device 32 of the feed device 22 are set such that the weft thread loop with elongated legs 62, 64 lies in the shed 8.
  • No weft thread 20 is required when the weft insertion needle 12 extends from the shed 8.
  • the constantly operating conveyor device 28 on the other hand, continuously delivers weft thread, which is taken up by the compensation device as a weft thread supply 60 and is kept ready for the next weft cycle.
  • the individual components of the feed device 32 can be matched to one another by means of a suitable control device, which is not shown in detail and which can contain a computer.
  • FIG. 4 shows a compensation device 32 designed as a blowing device 36, in which the blowing nozzle 40 acts on the weft thread 20, which is guided between two guides 66, 68, which are arranged in a flat chamber analogous to the chamber 82 shown in FIGS. 6 and 7 could be.
  • FIG. 5 shows a further compensation device 32a, in which the weft thread 20 is guided in a channel section 70, in which a blowing nozzle 72 opens and at an angle such that the blowing air flow 74 is directed against the running direction 76 of the weft thread.
  • the weft thread can then form a weft thread supply 78 between the end of the channel section 70 and a guide 80.
  • FIGS. 6 and 7 show the compensating device 32 used in FIGS. 1 to 3, which is designed as a suction device 38.
  • the suction device contains a flat chamber 82, which has a weft thread feeder 86 on one narrow side 84 and a weft thread discharge 88 on the other narrow side.
  • the width B of the chamber is preferably such that it is equal to or less than 50 times the thickness D of the weft thread 20.
  • the length C of the chamber is greater than the width B.
  • the flat chamber 82 of the suction nozzle 46 goes into the line 48 over.
  • the chamber 82 is equipped on the open side with a weft monitor 90 which points in the flow direction 92 of the suction air flow by means of a monitoring beam 91 of a diode in order to monitor the weft 20 or a weft supply 60. Is sucked by means of a known suction pump, not shown.
  • FIGS 8 to 11 show a slide needle device, the basic structure of which is known for example from CH-PS 644 163.
  • the slide needle 18a consists of a needle head 94 with a hook 96 which is arranged on a hollow needle shaft 98. The latter is attached to a hook lever 100, which is connected to a hollow shaft 102, which carries out the required pivoting movement.
  • the pusher needle contains the pusher 104 which is guided through the hollow shaft 98 and which is fastened to a pusher lever 106 which is in turn arranged on a shaft 108 which lies in the hollow shaft 102 and ensures the reciprocating movement of the pusher 104 .
  • FIG. 8 also shows the assignment of the slide needle 18a to the shed 8, which is formed by the warp threads 6, and to the weft insertion needle 12 and to the reed 2.
  • the needle head 94 is in the open, for receiving a weft loop 4 suitable position shown.
  • the sliding needle 18a is closed for forfeiting, as can be seen from FIG.
  • the hook 96 of the slide needle 18a on the side facing away from the weft insertion needle or the web 16 is inclined at an angle of 0 ° to 180 ° to the plane of movement 112 of the slide needle 18a.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Air Bags (AREA)

Abstract

The ribbon loom comprises a weft insertion needle (12) to insert a loop of weft thread (4) into a shed (8). The weft thread loop is tied off by a knitting needle (18) on the side of the web (16) away from the insertion needle (12). The insertion needle (12) is served by a feed device (22) for the weft thread (20) containing a pneumatically operated compensator (32) in the form of a blower (36) and/or a suction device (38). The insertion needle (12) also has a separate guide eye (34) for the weft thread. This thus provides a particularly effective compensator ensuring precise control of the weft thread when the ribbon loom is running at high speed. The web edges are always tensioned to the set width and maintained at a constant width.

Description

Bandwehmaschi-αe Bandwehmaschi-αe
Technisches GebietTechnical field
Die Erfindung betrifft eine Bandwebmaschine gemäss Oberbe¬ griff des Anspruches 1.The invention relates to a ribbon loom according to the preamble of claim 1.
Stand der TechnikState of the art
Bandwebmaschinen der eingangs genannten Art sind in vielfa¬ cher Form bekannt, so beispielsweise aus der GB-B-2 039 547. Die Bandwebmaschine enthält eine Schusseintragsnadel, der eine Schussfaden-Zuführvorrichtung zugeordnet ist, die -in Laufrichtung des Schussfadens gesehen- eine Schussfadenquel¬ le, eine Schussfadenbremse, eine Schussfaden-Fördervorrich¬ tung und eine Schussfaden-Ausgleichsvorrichtung aufweist. Die Schussfaden-Ausgleichsvorrichtung wird gebildet durch eine Schenkelfeder, die zwischen einer ersten und einer zweiten Stellung hin und her pendelt. In der ersten Stellung gibt die Schenkelfeder den Schussfaden zum Eintragen einer Schussfadenschlaufe mittels der Schusseintragsnadel in ein Webfach frei. Beim Ausfahren der Schusseintragsnadel aus dem Webfach nimmt die Schenkelfeder die zweite Stellung ein, in der sie einen Schussfadenvorrat aufnimmt und schliesslich den Schussfaden in einen mit einer Blattfeder gebildeten Spalt einklemmt, um eine weitere Förderung zu verhindern. Bei erneutem Eintragen des Schussfadens in das Webfach wird der Schussfaden wieder gespannt und die Schenkelfeder aus der zweiten in die erste Stellung bewegt, wobei gleichzeitig der Schussfaden von der klemmenden Blattfeder freikommt. Diese Ausgleichsvorrichtung hat den Nachteil, dass sie relativ träge ist, sc. dass eine damit ausgestattete Bandwebmaschine in ihrer Antriebsdrehzahl begrenzt ist, wobei insbesondere auch das Ein- und Ausbringen des Schussfadens an der bremsen¬ den Blattfeder die Leistungsfähigkeit der Bandwebmaschine weiter begrenzt.Ribbon weaving machines of the type mentioned at the outset are known in a variety of forms, for example from GB-B-2 039 547. The ribbon weaving machine contains a weft insertion needle to which a weft thread feed device is assigned which, viewed in the running direction of the weft thread, contains a weft thread source le, a weft brake, a weft conveying device and a weft compensation device. The weft compensation device is formed by a leg spring that oscillates back and forth between a first and a second position. In the first position, the leg spring releases the weft thread for inserting a weft thread loop into a shed using the weft insertion needle. When the weft insertion needle moves out of the shed, the leg spring assumes the second position, in which it receives a weft thread supply and finally clamps the weft thread in a gap formed by a leaf spring in order to prevent further conveyance. When the weft thread is re-inserted into the shed, the weft thread is tensioned again and the leg spring is removed from the second moved to the first position, at the same time the weft is released from the clamping leaf spring. This compensation device has the disadvantage that it is relatively sluggish, sc. That a belt loom equipped with it is limited in its drive speed, the insertion and removal of the weft thread on the braking leaf spring further limiting the performance of the belt loom.
Bandwebmaschinen mit solchen mechanischen Ausgleichsvorrich¬ tungen haben den Nachteil, dass sie in ihrer Leistung, das heisst in der maximalen Drehzahl bis 2'500 UpM begrenzt sind. Wird eine solche Bandwebmaschine mit höherer Drehzahl betrie¬ ben, so entstehen gravierende Probleme. Die Schenkelfedern können brechen und/oder sie kommen in einen kritischen Schwingungsbereich, in dem die Spannung des Schussfadens nicht mehr kontrolliert werden kann. Eigenschwingungen und Massenkräfte verlangen eine höhere Federkraft, die grösser werden kann als die Reisskraft des zu verarbeitenden Schuss¬ fadens. Als Folge der notwendigen grösseren Schenkelfeder¬ kraft sinkt die Standzeit der Zungen-Wirknadeln auf 1/2 Stunde. Weiter ergibt sich als Folge der zu hohen Schussfa¬ denspannung ein starkes Einweben der herzustellenden Bänder und das Band kann nicht auf konstanter Breite gehalten wer¬ den, wobei das Band insbesondere beim Anfahren der Bandwebma¬ schine schmäler ist. Weiter entstehen Kantdrahtbrüche als Folge der erforderlichen zu hohen Schussfaden-Spannung.Ribbon looms with such mechanical compensation devices have the disadvantage that their performance, that is to say their maximum speed, is limited to 2,500 rpm. If such a belt loom is operated at a higher speed, serious problems arise. The leg springs can break and / or they come into a critical vibration range in which the tension of the weft thread can no longer be controlled. Natural vibrations and inertia forces require a higher spring force, which can be greater than the tearing force of the weft thread to be processed. As a result of the necessary greater leg spring force, the service life of the tongue knitting needles drops to 1/2 hour. Furthermore, as a result of the weft tension being too high, the tapes to be produced are strongly woven in and the tape cannot be kept at a constant width, the tape being narrower, particularly when the tape loom is started up. Edge wire breaks also occur as a result of the weft thread tension being too high.
Bei gebräuchlichen Bandwebmaschinen werden heute sämtliche Maschenkanten-Arten mit Zungen-Wirknadeln, auch Zungennadel genannt, hergestellt. Solche Zungen-Wirknadeln sind nur bis zu Drehzahlen von 2'500 UpM geeignet. Bei höheren Drehzahlen entstehen an den Haken und Zungen Brüche, dies als Folge der hohen Beschleunigung beim Umschlagen der Zungen. Die Stand¬ zeiten der Zungen-Wirknadeln betragen bei Drehzahlen von 2'500 bis 4'000 UpM ungefähr 1 bis 4 Stunden, was in der Praxis nicht tragbar ist. Darstellung der ErfindungIn conventional ribbon looms, all types of mesh edges are now produced with tongue knitting needles, also called tongue needles. Such tongue knitting needles are only suitable up to speeds of 2,500 rpm. At higher speeds, breaks occur on the hooks and tongues as a result of the high acceleration when the tongues are turned. The service life of the tongue knitting needles at speeds of 2,500 to 4,000 rpm is approximately 1 to 4 hours, which is not practical in practice. Presentation of the invention
Aufgabe der Erfindung ist es, einen Bandwebmaschine der ein¬ gangs genannten Art so auszubilden, dass sie eine höhere Leistung ermöglicht.The object of the invention is to design a ribbon loom of the type mentioned in the introduction in such a way that it enables higher performance.
Die Aufgabe wird erfindungsgemäss gelöst durch die kennzeich¬ nenden Merkmale des Anspruches 1.The object is achieved according to the invention by the characterizing features of claim 1.
Dadurch, dass die Ausgleichsvorrichtung pneumatisch arbeitend als Blas- und/oder Saugeinrichtung ausgebildet ist, ergibt sich eine Bandwebmaschine, deren Schussfaden-Ausgleichsvor¬ richtung praktisch masselos ist bzw. auf die Masse des zu behandelnden Schussfadens beschränkt ist. Die Spannung des Schussfadens kann damit absolut konstant und auf tiefstem Wert gehalten werden, wobei sich diese Spannung durch vor¬ zugsweise einstellbare Komponenten der Zuführvorrichtung den durch das Schussfadenmaterial und/oder die Webbedingungen gegebenen Verhältnissen subtil anpassen lässt. Damit kann die für e „e einwandfreie Bandwebmaschine erforderliche Rückzugs¬ spannung für die eingebrachte Schussfadenschlaufe exakt eingehalten und die Grosse der Spannung durch eine vorzugs¬ weise einstellbare Führungsöse reguliert werden. Dies eröff¬ net neue Dimensionen für die Leistungsfähigkeit einer Band¬ webmaschine, die nun im Gegensatz zu den bekannten Bandwebma¬ schinen mit einer wesentlich höheren Drehzahlen von bei¬ spielsweise 3'000 bis 6'000 UpM betrieben werden kann.The fact that the compensation device is designed to operate pneumatically as a blowing and / or suction device results in a ribbon loom, the weft thread compensation device of which is practically massless or is limited to the mass of the weft thread to be treated. The tension of the weft thread can thus be kept absolutely constant and at its lowest value, whereby this tension can be subtly adapted to the conditions given by the weft thread material and / or the weaving conditions by means of preferably adjustable components of the feed device. The retraction tension required for a perfect ribbon weaving machine for the inserted weft thread loop can thus be exactly maintained and the magnitude of the tension can be regulated by a preferably adjustable guide eye. This opens up new dimensions for the performance of a belt loom, which, in contrast to the known belt looms, can now be operated at a significantly higher speed of 3,000 to 6,000 rpm, for example.
Vorteilhafte Ausgestaltungen der Bandwebmaschine sind in den Ansprüchen 2 bis 14 beschrieben.Advantageous embodiments of the ribbon loom are described in claims 2 to 14.
Besonderes vorteilhaft ist eine Ausgestaltung nach Anspruch 2, wodurch mittels der Führungsöse die Streckung des Schuss¬ fadens gemäss Anspruch 12 eingestellt werden kann.A configuration according to claim 2 is particularly advantageous, as a result of which the stretching of the weft thread can be adjusted according to claim 12 by means of the guide eyelet.
Bezüglich der Ausgleichsvorrichtung ergeben sich verschiedene Ausbildungsmöglichkeiten, besonders vorteilhaft ist jene nach Anspruch 3, da durch die Kammer eine exakte Führung des Schussfadens gewährleistet ist, so dass auch die Einwirkung des Luftstromes auf den Schussfaden exakt bestimmt und ge¬ steuert werden kann. Eine vorzugsweise Ausbildung der Kammer ist in Anspruch 4 beschrieben. Die Weiterbildung nach An¬ spruch 5 verbessert die Überwachung des Schussfadens in der Kammer.There are various training options with regard to the compensation device, the one according to is particularly advantageous Claim 3, since the chamber ensures an exact guidance of the weft thread, so that the action of the air flow on the weft thread can also be exactly determined and controlled. A preferred embodiment of the chamber is described in claim 4. The development according to claim 5 improves the monitoring of the weft thread in the chamber.
Der Anspruch 6 beschreibt eine weitere Möglichkeit der Ausge¬ staltung der Ausgleichsvorrichtung.Claim 6 describes a further possibility of designing the compensation device.
Die Ausgestaltungen der Bandwebmaschine nach den Ansprüchen 7 bis 9 tragen zu einer subtileren Steuerung des Schussfadens und damit der Anpassung an die Fadengualität einerseits und die Webbedingungen andererseits bei. Die Zuführvorrichtung für den Schussfaden ist mit Vorteil gemäss Anspruch 10 so einstellbar, dass der Schussfaden sowohl bei ausgefahrener wie bei eingefahrener Schusseintragsnadel gestreckt ist. Dadurch wird nicht nur der beim Eintragen des Schussfadens erforderliche Schussfadenvorrat besonders klein gehalten, sondern es werden auch allfällige Schwingungen des Schussfa¬ dens während des Eintragszykluses verhindert, die eine Bela¬ stung für den Schussfaden darstellen und den Webvorgang beeinträchtigen würden. Gemäss Anspruch 11 wird die Streckung des Schussfadens bei eingefahrener und ausgefahrener Schuss¬ eintragsnadel vorzugsweise mittels der Schussfaden-Fördervor¬ richtung eingestellt. Die Einstellung der Streckung des Schussfadens bei ausgefahrener und eingefahrener Schussein¬ tragsnadel erfolgt vorzugsweise mittels der Führungsöse gemäss Anspruch 12, die Webkanten werden dabei stets auf die eingestellte Bandbreite angespannt und auf exakt konstante Breite gehalten.The configurations of the ribbon loom according to claims 7 to 9 contribute to a more subtle control of the weft thread and thus the adaptation to the thread quality on the one hand and the weaving conditions on the other hand. The feed device for the weft thread is advantageously adjustable in such a way that the weft thread is stretched both when the weft insertion needle is extended and when it is retracted. As a result, not only is the weft thread supply required when the weft thread is inserted particularly small, but also any vibrations of the weft thread during the insertion cycle are prevented, which would put a strain on the weft thread and would impair the weaving process. According to claim 11, the stretching of the weft thread is preferably adjusted by means of the weft thread conveying device when the weft insertion needle is retracted and extended. The stretching of the weft thread when the weft insertion needle is extended and retracted is preferably carried out by means of the guide eye according to claim 12, the selvedges are always tensioned to the set bandwidth and kept at an exactly constant width.
Zum Abbinden der Schussfadenschlaufe nach deren Eintrag in das Webfach können bis zu den heute üblichen Drehzahlen (bis zu 3'000 UpM) der Bandwebmaschinen die verschiedensten Wirk¬ nadeln verwendet werden, so beispielsweise die üblichen Zungennadeln und Crochettnadeln. Bei hochtourigen Bandwebma¬ schinen stellt die Schieber-Wirknadel, kurz Schiebernadel genannt nach Anspruch 13 praktisch das einzige Konstruktions¬ element dar, welches nicht nur eine einwandfreie Funktion ermöglicht sondern auch die erforderlichen Standzeit bietet. Da die Schiebernadel keine Zunge hat, sind die damit verbun¬ denen Probleme vollständig beseitigt. Durch die Anordnung mit gemeinsamer Schwenkachse nach Anspruch 14 für den Haken- und den Schieberteil wird ein exakter Lauf beider Teile ermög¬ licht. Der Verschleiss wird dadurch praktisch vollständig eliminiert. Auch lassen sich die beiden Teile sehr genau aufeinander einstellen und der einmal eingestellte Wert bleibt während des Betriebes der Bandwebmaschine konstant erhalten. Die Fangsicherheit des Schussfadens und eines etwaigen Hilfsfadens ist bei höchster Drehzahl einwandfrei gegeben, da die Schiebernadel zwangsläufig geöffnet und geschlossen wird. Besonders vorteilhaft ist es, wenn die Schiebernadel gemäss Anspruch 15 ausgestaltet ist.A wide variety of knitting needles, for example the usual ones, can be used to tie the weft thread loop after it has been entered into the shed up to the current speeds (up to 3,000 rpm) of the ribbon looms Switch needles and crochet needles. In high-speed ribbon weaving machines, the pusher knitting needle, or pusher needle for short, is practically the only construction element which not only enables perfect function but also offers the required service life. Since the slide needle has no tongue, the problems associated therewith are completely eliminated. The arrangement with a common pivot axis according to claim 14 for the hook and the slide part enables an exact running of both parts. The wear is practically completely eliminated. The two parts can also be adjusted very precisely to one another and the value once set is kept constant during the operation of the belt loom. The safety of the weft thread and any auxiliary thread is flawlessly given at the highest speed, since the slide needle is inevitably opened and closed. It when the slide needle is configured according to claim 15 is particularly advantageous.
Kurzbeschreibung der ZeichnungBrief description of the drawing
Ausführungsbeispiele der erfindungsgemässen Bandwebmaschine werden nachfolgend anhand schematischer Zeichnungen näher beschrieben, dabei zeigen:Exemplary embodiments of the ribbon loom according to the invention are described in more detail below with the aid of schematic drawings, in which:
Figur 1 die Schussfaden-Zuführvorrichtung einer Bandwebmaschine in der Dar¬ stellung nach Art eines Blockdia- grammes bei ausgefahrener Schuss¬ eintragsnadel;FIG. 1 shows the weft feeding device of a ribbon loom in the illustration in the manner of a block diagram with the weft insertion needle extended;
Figur 2 die Schussfaden-Zuführvorrichtung der Figur 1 mit abgewandelter Wirk¬ nadel und bei beginnendem Eintrag des Schussfadens; Figur 3 die Schussfaden-Zuführvorrichtung der Figur 2 bei eingetragener Schussfadenschlaufe;FIG. 2 shows the weft feed device of FIG. 1 with a modified knitting needle and when the weft thread begins to be inserted; FIG. 3 shows the weft feed device of FIG. 2 with the weft loop inserted;
Figur 4 eine erste Schussfaden-Ausgleichs¬ vorrichtung in schematischer Dar¬ stellung;Figure 4 shows a first weft compensating device in a schematic representation;
Figur 5 eine zweite Schussfaden-Ausgleichs¬ vorrichtung in schematischer Dar¬ stellung;FIG. 5 shows a second weft compensating device in a schematic representation;
Figur 6 eine dritte Schussfaden-Ausgleichs¬ vorrichtung im Schnitt quer zur Laufrichtung des Schussfadens;FIG. 6 shows a third weft compensating device in cross section to the running direction of the weft;
Figur 7 die Schussfaden-Ausgleichsvorrich¬ tung der Figur 6 im Schnitt VII-VII der Figur 6;FIG. 7 the weft compensation device of FIG. 6 in section VII-VII of FIG. 6;
Figur 8 eine Schiebernadel-Vorrichtung inFigure 8 shows a needle device in
Seitenansicht;Side view;
Figur 9 den Kopf der Schiebernadel in geöff¬ netem Zustand, im Schnitt längs des Schiebers und in grösserem Massstab;FIG. 9 the head of the slide needle in the opened state, in section along the slide and on a larger scale;
Figur 10 den Kopf der Schiebernadel gemässFigure 10 shows the head of the pusher needle
Figur 9 in geschlossenem Zustand; undFigure 9 in the closed state; and
Figur 11 den Kopf der Schiebernadel der FigurFigure 11 shows the head of the needle of the figure
9 im Schnitt XI-XI der Figur 9. Wege zur Ausführung der Erfindung9 in section XI-XI of FIG. 9. Ways of Carrying Out the Invention
Die Figuren 1 bis 3 zeigen wesentliche Komponenten einer Bandwebmaschine in der Darstellung nach Art eines Blockschau¬ bildes in verschiedenen Betriebszuständen der Schusseintrags¬ nadel. Die Bandwebmaschine weist ein Webblatt 2 auf, welches eine Schussfadenschlaufe 4, die in ein aus Kettfäden 6 gebil¬ detes Webfach eingetragen worden ist, an einer Warenkante 10 anschlägt. Zum Eintragen der Schussfadenschlaufe 4 dient eine Schusseintragsnadel 12, die sichelförmig ausgebildet und um eine Achse 14 hin und her verschwenkbar ist. Auf der der Eintragsseite, an der die Schusseintragsnadel 12 angeordnet ist, abgewandten Seite der Warenbahn 16, das heisst, des hergestellten Bandes, ist eine Wirknadel 18 angeordnet, die zum Abbinden der Schussfadenschlaufe 4 dient. In Figur 1 ist die Wirknadel als Zungennadel ausgebildet und in den Figuren 2 und 3 als Schiebernadel 18a, die anhand der Figuren 8 bis 11 nachfolgend weiter erläutert ist.Figures 1 to 3 show essential components of a ribbon loom in the manner of a block diagram in different operating states of the weft insertion needle. The belt weaving machine has a reed 2, which strikes a weft loop 4, which has been inserted into a shed made of warp threads 6, against a fabric edge 10. A weft insertion needle 12, which is crescent-shaped and can be pivoted back and forth about an axis 14, is used to insert the weft thread loop 4. On the entry side, on which the weft insertion needle 12 is arranged, the side of the material web 16, that is to say the manufactured tape, facing away, a knitting needle 18 is arranged, which serves to bind the weft loop 4. In Figure 1, the knitting needle is designed as a latch needle and in Figures 2 and 3 as a sliding needle 18a, which is further explained below with reference to Figures 8 to 11.
Der Schusseintragsnadel 12 wird ein Schussfaden 20 mittels einer Zuführvorrichtung 22 zugeführt. Diese weist in Lauf¬ richtung des Schussfadens gesehen folgende Komponenten auf. Als Schussfadenquelle 24 dient beispielsweise eine Schussfa¬ den-Spule, von der der Schussfaden 20 beispielsweise über eine einstellbare Fadenbremse 26 zu einer Fördervorrichtung 28 gelangt, die den Schussfaden 20 mit einstellbarer Ge¬ schwindigkeit kontinuierlich fördert. Von dort gelangt der Schussfaden über einen vorzugsweise optisch ausgebildeten Schussfadenwächter 30 zu einer pneumatisch arbeitenden Aus¬ gleichsvorrichtung 32 und weiter über eine lageeinstellbare Führungsöse 34 zur Schusseintragsnadel 12. Anstelle der gezeigten Vorschaltung kann der Schussfadenwächter der Aus¬ gleichsvorrichtung 32 auch nachgeschaltet sein. Die pneuma¬ tisch arbeitende Ausgleichsvorrichtung 32 weist eine Blasein¬ richtung 36 und/oder Saugeinrichtung 38 auf, die mit dem Schussfaden zusammenwirkt bzw. wirken. Die Blaseinrichtung 36 enthält eine Blasdüse 40, die über eine Leitung 42 mit einer Gebläsevorrichtung 44 verbunden ist, welche eine Druckluft 45 erzeugt. Analog ist die Saugeinrichtung 38 mit einer Saugdüse 46 ausgestattet, die über eine Leitung 48 mit der Saugseite einer Gebläsevorrichtung 50 verbunden ist und eine Saugluft 49 erzeugt. In Figur 1 ist die Ausgleichsvorrichtung 32 sowohl mit einer Blaseinrichtung 36 wie auch mit einer Saug¬ einrichtung 38 dargestellt, wobei die Saugluft 49 durch angesaugte Umgebungsluft 51 gebildet wird. In den Figuren 2 und 3 wird lediglich eine Saugeinrichtung 38 verwendet, die anhand der Figuren 6 und 7 näher beschrieben wird.A weft thread 20 is fed to the weft insertion needle 12 by means of a feed device 22. This has the following components when viewed in the running direction of the weft thread. A weft thread bobbin, for example, serves as the weft thread source 24, from which the weft thread 20 arrives, for example via an adjustable thread brake 26, to a conveying device 28 which continuously conveys the weft thread 20 at an adjustable speed. From there, the weft thread reaches a pneumatically operating compensation device 32 via a preferably optically designed weft monitor 30 and further via a position-adjustable guide eyelet 34 to the weft insertion needle 12. Instead of the shown circuit, the weft monitor can also be connected downstream of the compensation device 32. The pneumatically operating compensating device 32 has a blowing device 36 and / or suction device 38 which interacts with the weft thread. The blowing device 36 contains a blowing nozzle 40, which is connected to a line 42 via a Blower device 44 is connected, which generates compressed air 45. Analogously, the suction device 38 is equipped with a suction nozzle 46, which is connected via a line 48 to the suction side of a blower device 50 and generates suction air 49. In Figure 1, the compensating device 32 is shown both with a blowing device 36 and with a suction device 38, wherein the suction air 49 is formed by sucked in ambient air 51. In FIGS. 2 and 3, only one suction device 38 is used, which is described in more detail with reference to FIGS. 6 and 7.
Die pneumatische Ausgleichsvorrichtung 32 dient einerseits der Aufnahme eines Schussfadenvorrates, der bedingt ist durch den intermittierenden Schussfadenabzug beim Einbringen der Schussfadenschlaufe in das Webfach. Andererseits dient die Ausgleichsvorrichtung auch dazu, dem Schussfaden die für das Eintragen der Schussfadenschlaufe in das Webfach erforderli¬ che Zugspannung zu verleihen.The pneumatic compensation device 32 serves on the one hand to accommodate a supply of weft threads, which is caused by the intermittent weft thread withdrawal when the weft thread loop is introduced into the shed. On the other hand, the compensating device also serves to give the weft the tensile stress required for the insertion of the weft loop into the shed.
In Figur 1 befindet sich die Schusseintragsnadel in der ausgefahrenen Stellung, in der der Schussfaden zwischen der Warenkante 52 und der Führungsöse 34 eine Rückzugsschlaufe 54 für den Anzug der Wirkschlaufe 56 bildet. In diesem Stadium wird auch die in das Webfach 8 eingetragene Schussfaden¬ schlaufe 4 an der Warenkante 10 angeschlagen. Wie aus Figur 2 hervorgeht, beginnt mit dem Zurückschwenken des Webblattes 2 gleichzeitig auch die Eintragsbewegung der Schusseintragsna¬ del 12. In Figur 2 ist die Stellung der Schusseintragsnadel dargestellt, wie diese die Führungsöse 34 vor dem Eintragen der Schussfadenschlaufe passiert, wobei die Komponenten der Zuführvorrichtung und insbesondere die Ausgleichsvorrichtung 32 so eingestellt sind, dass der Schussfaden zwischen der Führungsöse 34 und der Warenkante 52 geradlinig verläuft, wobei die Überlänge des Schussfadens von der Ausgleichsvor¬ richtung 32 aufgenommen wird. Gestrichelt ist angedeutet, wie der Schussfadenverlauf 58 sein würde, wenn keine ausreichende Schussfadenspannung vorhanden wäre. Die Fördervorrichtung 28 ist so eingestellt, dass sich in diesem Stadium in der Aus¬ gleichsvorrichtung 32 ein Schussfadenvorrat 60 gebildet hat, der während des in Figur 3 gezeigten Eintragens der Schussfa¬ denschlaufe in das Webfach aufgebraucht wird. Bei der in Figur 3 gezeigten Phase hat die Schusseintragsnadel die Schussfadenschlaufe 4 in das Webfach 8 eingetragen und zwar derart, dass der Schussfaden für die Maschenbildung beim Abbinden der Schussfadenschlaufe in die Wirknadel 18a einge¬ legt ist. Auch hier sind die Komponenten, insbesondere die Ausgleichsvorrichtung 32 der Zuführvorrichtung 22 so einge¬ stellt, dass die Schussfadenschlaufe mit gestreckten Schen¬ keln 62,64 im Webfach 8 liegt. Während des Ausfahrens der Schusseintragsnadel 12 aus dem Webfach 8 wird kein Schussfa¬ den 20 benötigt. Die konstant arbeitende Fördervorrichtung 28 liefert hingegen fortlaufend Schussfaden, der von der Ausgleichsvorrichtung als Schussfadenvorrat 60 aufgenommen und für den nächsten Schusszyklus bereitgehalten wird.In FIG. 1, the weft insertion needle is in the extended position, in which the weft thread forms a retraction loop 54 between the fabric edge 52 and the guide eye 34 for tightening the knitting loop 56. At this stage, the weft loop 4 entered in the shed 8 is also struck on the edge 10 of the goods. As can be seen from FIG. 2, the insertion movement of the weft insertion needle 12 also begins when the reed 2 is pivoted back. FIG. 2 shows the position of the weft insertion needle as it passes through the guide eyelet 34 before the insertion of the weft thread loop, the components of the feed device and in particular the compensating device 32 are set such that the weft thread runs in a straight line between the guide eye 34 and the fabric edge 52, the excess length of the weft thread being absorbed by the compensating device 32. Dashed lines indicate how the weft thread course 58 would be if there was insufficient weft thread tension. The conveyor 28 is set in such a way that at this stage a weft thread supply 60 has formed in the compensation device 32, which is used up during the insertion of the weft thread loop into the shed shown in FIG. In the phase shown in FIG. 3, the weft insertion needle has inserted the weft thread loop 4 into the shed 8 in such a way that the weft thread for stitch formation is inserted into the knitting needle 18a when the weft thread loop is tied. Here too, the components, in particular the compensating device 32 of the feed device 22, are set such that the weft thread loop with elongated legs 62, 64 lies in the shed 8. No weft thread 20 is required when the weft insertion needle 12 extends from the shed 8. The constantly operating conveyor device 28, on the other hand, continuously delivers weft thread, which is taken up by the compensation device as a weft thread supply 60 and is kept ready for the next weft cycle.
Die einzelnen Komponenten der Zuführvorrichtung 32 können mittels einer geeigneten, nicht näher dargestellten Steuer¬ vorrichtung, die einen Rechner enthalten kann, aufeinander abgestimmt werden.The individual components of the feed device 32 can be matched to one another by means of a suitable control device, which is not shown in detail and which can contain a computer.
Die Figur 4 zeigt eine als Blaseinrichtung 36 ausgestaltete Ausgleichsvorrichtung 32, bei der die Blasdüse 40 auf den Schussfaden 20 einwirkt, der zwischen zwei Führungen 66,68 geführt ist, die in einer flachen Kammer analog der in den Figuren 6 und 7 gezeigten Kammer 82 angeordnet sein können.FIG. 4 shows a compensation device 32 designed as a blowing device 36, in which the blowing nozzle 40 acts on the weft thread 20, which is guided between two guides 66, 68, which are arranged in a flat chamber analogous to the chamber 82 shown in FIGS. 6 and 7 could be.
Die Figur 5 zeigt eine weitere Ausgleichsvorrichtung 32a, bei der der Schussfaden 20 in einem Kanalabschnitt 70 geführt ist, in dem eine Blasdüse 72 mündet und zwar unter einem solchen Winkel, dass der Blasluftstrom 74 entgegen der Lauf¬ richtung 76 des Schussfadens gerichtet ist. Der Schussfaden kann dann einen Schussfadenvorrat 78 zwischen dem Ende des Kanalabschnittes 70 und einer Führung 80 bilden. Die Figuren 6 und 7 zeigen die in den Figuren 1 bis 3 verwen¬ dete Ausgleichsvorrichtung 32, die als Saugeinrichtung 38 ausgebildet ist. Hierzu enthält die Saugeinrichtung eine flache Kammer 82, die an einer Schmalseite 84 eine Schussfa¬ den-Zuführung 86 und an der anderen Schmalseite eine Schuss¬ faden-Abführung 88 aufweist. Die Breite B der Kammer ist vorzugsweise so bemessen, dass sie gleich oder kleiner ist als die 50-fache Dicke D des Schussfadens 20. Die Länge C der Kammer ist grösser als die Breite B. Die flache Kammer 82 der Saugdüse 46 geht in die Leitung 48 über. Die Kammer 82 ist an der offenen Seite mit einem Schussfadenwächter 90 ausgestat¬ tet, der mittels eines Überwachungsstrahls 91 einer Diode in die Strömungsrichtung 92 des Saugluftstromes weist, um den Schussfaden 20 bzw. einen Schussfadenvorrat 60 zu überwachen. Gesaugt wird mittels einer bekannten nicht dargestellten Saugpumpe.FIG. 5 shows a further compensation device 32a, in which the weft thread 20 is guided in a channel section 70, in which a blowing nozzle 72 opens and at an angle such that the blowing air flow 74 is directed against the running direction 76 of the weft thread. The weft thread can then form a weft thread supply 78 between the end of the channel section 70 and a guide 80. FIGS. 6 and 7 show the compensating device 32 used in FIGS. 1 to 3, which is designed as a suction device 38. For this purpose, the suction device contains a flat chamber 82, which has a weft thread feeder 86 on one narrow side 84 and a weft thread discharge 88 on the other narrow side. The width B of the chamber is preferably such that it is equal to or less than 50 times the thickness D of the weft thread 20. The length C of the chamber is greater than the width B. The flat chamber 82 of the suction nozzle 46 goes into the line 48 over. The chamber 82 is equipped on the open side with a weft monitor 90 which points in the flow direction 92 of the suction air flow by means of a monitoring beam 91 of a diode in order to monitor the weft 20 or a weft supply 60. Is sucked by means of a known suction pump, not shown.
Die Figuren 8 bis 11 zeigen eine Schiebernadelvorrichtung, deren grundsätzlicher Aufbau beispielsweise aus der CH-PS 644 163 bekannt ist. Die Schiebernadel 18a besteht aus einem Nadelkopf 94 mit einem Haken 96, der an einem hohlen Nadel¬ schaft 98 angeordnet ist. Letzterer ist an einem Hakenhebel 100 befestigt, der mit einer Hohlwelle 102 verbunden ist, welche die erforderliche Schwenkbewegung ausführt. Die Schie¬ bernadel enthält den durch den hohlen Schaft 98 geführten Schieber 104, der an einem Schieberhebel 106 befestigt ist, welcher seinerseits an einer Welle 108 angeordnet ist, die in der Hohlwelle 102 liegt und für die hin- und hergehende Bewegung des Schiebers 104 sorgt. Die Hohlwelle 102 des Hakens 96 und die Welle 108 des Schiebers 104 sind also um eine gemeinsame Achse 110 koaxial angeordnet. Die Figur 8 zeigt auch die Zuordnung der Schiebernadel 18a zum Webfach 8, welches durch die Kettfäden 6 gebildet ist, und zur Schuss¬ eintragsnadel 12 sowie zum Webblatt 2. In Figur 9 ist der Nadelkopf 94 in der offenen, zur Aufnahme einer Schussfaden¬ schlaufe 4 geeigneten Stellung gezeigt. Zum Verwirken ist die Schiebernadel 18a geschlossen, wie aus Figur 10 hervorgeht. Vorteilhafter Weise ist der Haken 96 der Schiebernadel 18a auf der der Schusseintragsnadel bzw. der Warenbahn 16 abge¬ wandten Seite unter einem Winkel von 0° bis 180° zur Bewe¬ gungsebene 112 der Schiebernadel 18a geneigt. Figures 8 to 11 show a slide needle device, the basic structure of which is known for example from CH-PS 644 163. The slide needle 18a consists of a needle head 94 with a hook 96 which is arranged on a hollow needle shaft 98. The latter is attached to a hook lever 100, which is connected to a hollow shaft 102, which carries out the required pivoting movement. The pusher needle contains the pusher 104 which is guided through the hollow shaft 98 and which is fastened to a pusher lever 106 which is in turn arranged on a shaft 108 which lies in the hollow shaft 102 and ensures the reciprocating movement of the pusher 104 . The hollow shaft 102 of the hook 96 and the shaft 108 of the slide 104 are thus arranged coaxially about a common axis 110. FIG. 8 also shows the assignment of the slide needle 18a to the shed 8, which is formed by the warp threads 6, and to the weft insertion needle 12 and to the reed 2. In FIG. 9, the needle head 94 is in the open, for receiving a weft loop 4 suitable position shown. The sliding needle 18a is closed for forfeiting, as can be seen from FIG. Advantageously, the hook 96 of the slide needle 18a on the side facing away from the weft insertion needle or the web 16 is inclined at an angle of 0 ° to 180 ° to the plane of movement 112 of the slide needle 18a.
BBZDGSZBICHEKLISTEBBZDGSZBICHEKLISTE
2 Webblatt2 reed
4 Schussfadenschlaufe4 weft loops
6 Kettfaden6 warp threads
8 Webfach8 shed
10 Warenkante10 goods edge
12 Schusseintragsnadel12 weft insertion needle
14 Achse14 axis
16 Warenbahn16 web
18 Wirknadel18 knitting needle
18a Schiebernadel18a slide needle
20 Schussfaden20 weft
22 Zuführvorrichtung22 feed device
24 Schussfadenquelle24 weft source
26 Schussfadenbremse26 weft brake
28 Fördervorrichtung28 conveyor
30 Schussfadenwächter30 weft monitors
32 Ausgleichsvorrichtung32 compensation device
32a Ausgleichsvorrichtung32a compensation device
34 Führungsöse34 guide eye
36 Blaseinrichtung36 blowing device
38 Saugeinrichtung38 suction device
40 Blasdüse40 blowing nozzle
42 Leitung42 line
44 Gebläsevorrichtung44 blower device
45 Druckluft45 compressed air
46 Saugdüse46 suction nozzle
48 Leitung48 line
49 Saugluft49 suction air
50 Gebläsevorrichtung50 blower device
51 Umgebungsluft51 ambient air
52 Warenkante52 goods edge
54 Rückzugsschlaufe54 retraction loop
56 Wirkschlaufe56 knitting loop
58 Schussfadenverlauf Schussfadenvorrat58 weft course Weft supply
Schenkelleg
Schenkelleg
Führungguide
Führungguide
KanalabschnittCanal section
BlasdüseBlow nozzle
BlasluftstromBlow air flow
LaufrichtungRunning direction
SchussfadenvorratWeft supply
Führungguide
Kammerchamber
SchmalseiteNarrow side
Schussfaden-ZuführungWeft feed
Schussfaden-AbführungWeft thread removal
SchussfadenwächterWeft guard
ÜberwachungsstrahlSurveillance beam
Strömungsrichtung/SaugluftFlow direction / suction air
NadelkopfNeedle head
Hakenhook
NadelschaftNeedle shaft
HakenhebelHook lever
HohlwelleHollow shaft
Schieberpusher
SchieberhebelSlide lever
Wellewave
Achseaxis
Bewegungsebene Plane of movement

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Bandwebmaschine mit einer Schusseintragsnadel (12), der eine Schussfaden-Zuführvorrichtung (22) mit einer den Schussfaden (20) spannenden Schussfaden-Ausgleichsvor¬ richtung (32,32a) zugeordnet ist, und mit einer Wirknadel (18,18a) zum Abbinden einer ins Webfach (8) eingebrachten Schussfadenschlaufe (4), dadurch gekennzeichnet, dass die Ausgleichsvorrichtung (32,32a) pneumatisch arbeitend als Blas- (36) und/oder Saugeinrichtung (38) ausgebildet ist und dass - in Fadenlaufrichtung gesehen - nach der Ausgleichsvorrichtung (32,32a) und vor der Schussein¬ tragsnadel (12) eine separate Schussfaden-Führungsöse (34) angeordnet ist.1. Ribbon loom with a weft insertion needle (12), which is assigned a weft feed device (22) with a weft compensating device (32, 32a) exciting the weft (20), and with a knitting needle (18, 18a) for tying a weft thread loop (4) introduced into the shed (8), characterized in that the compensating device (32, 32a) is designed to operate pneumatically as a blowing (36) and / or suction device (38) and that - seen in the thread running direction - after the compensating device (32, 32a) and a separate weft guide eyelet (34) is arranged in front of the weft insertion needle (12).
2. Bandwebmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die separate Führungsöse (34) lageeinstellbar an¬ geordnet ist.2. Ribbon loom according to claim 1, characterized in that the separate guide eyelet (34) is arranged in an adjustable position.
Bandwebmaschine nach Anspruch 1 oder 2, dadurch ge¬ kennzeichnet, dass die Blas- (36) und/oder Saugeinrich¬ tung (38) eine flache rechteckför ige Kammer (82) auf¬ weist, die an einer Schmalseite (84) eine Schussfaden- Zuführung (68,86) und an der anderen Schmalseite eine Schussfaden-Abführung (66,88) enthält.Ribbon loom according to claim 1 or 2, characterized in that the blowing (36) and / or suction device (38) has a flat rectangular chamber (82) which has a weft thread on a narrow side (84). Feeder (68.86) and on the other narrow side contains a weft thread discharge (66.88).
4. Bandwebmaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Breite (B) der Kammer (82) gleich oder kleiner als die 50-fache Dicke (D) des Schussfadens (20) ist und dass die Länge (C) grösser als die Breite (B) ist. 4. Ribbon loom according to claim 3, characterized in that the width (B) of the chamber (82) is equal to or less than 50 times the thickness (D) of the weft thread (20) and that the length (C) is greater than the width (B) is.
5. Bandwebmaschine nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der Schussfaden in der Kammer (82), vorzugsweise in Strömungsrichtung (92) des Luftstromes, durch ein Schussfadenwächter (90) auf Bruch oder Auslauf überwachbar ist.5. Ribbon loom according to claim 3 or 4, characterized in that the weft thread in the chamber (82), preferably in the direction of flow (92) of the air stream, can be monitored for breakage or leakage by a weft thread monitor (90).
6. Bandwebmaschine nach Anspruch 1 oder 2, dadurch ge¬ kennzeichnet, dass die Ausgleichsvorrichtung (32a) einen Kanalabschnitt (70) für den Schussfaden (20) aufweist, in den unter einem spitzen Winkel ein Blasdüse (72) derart mündet, dass der Blasluftstrom (74) der Laufrichtung (76) des Schussfadens (20) entgegenwirkt.6. Ribbon loom according to claim 1 or 2, characterized ge indicates that the compensating device (32a) has a channel section (70) for the weft thread (20) into which a blowing nozzle (72) opens at an acute angle such that the blown air flow (74) counteracts the running direction (76) of the weft thread (20).
7. Bandwebmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Ausgleichsvorrichtung (32,32a) eine Schussfadenbremse (26) vorgeschaltet ist.7. Ribbon loom according to one of claims 1 to 6, characterized in that the compensating device (32, 32a) has a weft brake (26) connected upstream.
8. Bandwebmaschine nach einem der Ansprüche 1 bis 4 und 6 bis 7, dadurch gekennzeichnet, dass der Ausgleichsvor¬ richtung (32,32a) ein vorzugsweise optisch ausgebildeter Schussfadenwächter (30) vor- oder nachgeschaltet ist.8. Ribbon loom according to one of claims 1 to 4 and 6 to 7, characterized in that the compensation device (32, 32a) has a preferably optically designed weft monitor (30) connected upstream or downstream.
9. Bandwebmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Zuführvorrichtung (22) eine Schussfadenquelle (24) und eine Schussfaden-Fördervor¬ richtung (28) aufweist, welche der Ausgleichsvorrichtung (32,32a) vorgeschaltet sind.9. Ribbon loom according to one of claims 1 to 8, characterized in that the feed device (22) has a weft thread source (24) and a weft conveyor device (28) which are connected upstream of the compensating device (32, 32a).
10. Bandwebmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Zuführvorrichtung (22) derart einstellbar ist, dass der Schussfaden (20) sowohl bei ausgefahrener wie bei eingefahrener Schusseintragsnadel (12) gestreckt ist. 10. Ribbon loom according to one of claims 1 to 9, characterized in that the feed device (22) is adjustable in such a way that the weft thread (20) is stretched both when the weft insertion needle is extended and when it is retracted (12).
11. Bandwebmaschine nach Anspruch 10, dadurch gekennzeichnet, dass die Streckung des Schussfadens (20) bei eingefahre¬ ner und ausgefahrener Schusseintragsnadel (12) mittels einer Schussfaden-Fördervorrichtung (28) einstellbar ist.11. Ribbon loom according to claim 10, characterized in that the stretching of the weft thread (20) when the weft insertion needle (12) is retracted and extended is adjustable by means of a weft thread conveying device (28).
12. Bandwebmaschine nach den Ansprüchen 2 und/oder 10, da¬ durch gekennzeichnet, dass die Streckung des Schussfadens (20) bei ausgefahrener und eingefahrener Schusseintrags¬ nadel (12) mittels der Führungsöse (34) einstellbar ist.12. Ribbon loom according to claims 2 and / or 10, characterized in that the stretching of the weft thread (20) can be adjusted by means of the guide eyelet (34) when the weft insertion needle (12) is extended and retracted.
13. Bandwebmaschine nach einem der Ansprüche 1 bis 12, da¬ durch gekennzeichnet, dass die Wirknadel als Schieberna¬ del (18a) ausgebildet ist.13. Ribbon loom according to one of claims 1 to 12, characterized in that the knitting needle is designed as a slider needle (18a).
14. Bandwebmaschine nach Anspruch 13, dadurch gekennzeichnet, dass deren Hakenteil (96,98,100) und Schieberteil (104,106,108) um die gleiche Achse (110) schwenkbar sind.14. Ribbon loom according to claim 13, characterized in that the hook part (96,98,100) and slide part (104,106,108) are pivotable about the same axis (110).
15. Bandwebmaschine nach Anspruch 13 oder 14, dadurch gekenn¬ zeichnet, dass der Haken (96) des Hakenteils der Schie¬ bernadel (18a) auf der der Schusseintragsnadel (12) abgewandten Seite der Warenbahn (16) einen Winkel von 0° bis 180° zur Bewegungsebene (112) der Schiebernadel bildet. 15. Ribbon loom according to claim 13 or 14, characterized in that the hook (96) of the hook part of the slide needle (18a) on the side of the fabric web (16) facing away from the weft insertion needle (12) has an angle of 0 ° to 180 ° to the plane of movement (112) of the slide needle.
EP95940108A 1994-12-22 1995-12-19 Ribbon loom Expired - Lifetime EP0799339B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9420562U DE9420562U1 (en) 1994-12-22 1994-12-22 Ribbon loom
DE9420562U 1994-12-22
PCT/CH1995/000301 WO1996019604A1 (en) 1994-12-22 1995-12-19 Ribbon loom

Publications (2)

Publication Number Publication Date
EP0799339A1 true EP0799339A1 (en) 1997-10-08
EP0799339B1 EP0799339B1 (en) 1999-04-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95940108A Expired - Lifetime EP0799339B1 (en) 1994-12-22 1995-12-19 Ribbon loom

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US (1) US5878787A (en)
EP (1) EP0799339B1 (en)
JP (1) JPH10511435A (en)
AU (1) AU4170296A (en)
DE (2) DE9420562U1 (en)
ES (1) ES2130682T3 (en)
RU (1) RU2129174C1 (en)
TR (1) TR199501674A2 (en)
WO (1) WO1996019604A1 (en)

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Also Published As

Publication number Publication date
US5878787A (en) 1999-03-09
DE9420562U1 (en) 1995-02-16
JPH10511435A (en) 1998-11-04
WO1996019604A1 (en) 1996-06-27
ES2130682T3 (en) 1999-07-01
TR199501674A2 (en) 1996-07-21
RU2129174C1 (en) 1999-04-20
EP0799339B1 (en) 1999-04-14
AU4170296A (en) 1996-07-10
DE59505677D1 (en) 1999-05-20

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