EP1512782B1 - Weaving loom with a tuck-in device - Google Patents

Weaving loom with a tuck-in device Download PDF

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Publication number
EP1512782B1
EP1512782B1 EP04405510A EP04405510A EP1512782B1 EP 1512782 B1 EP1512782 B1 EP 1512782B1 EP 04405510 A EP04405510 A EP 04405510A EP 04405510 A EP04405510 A EP 04405510A EP 1512782 B1 EP1512782 B1 EP 1512782B1
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EP
European Patent Office
Prior art keywords
shed
blowing nozzle
additional blowing
weft
weaving machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP04405510A
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German (de)
French (fr)
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EP1512782A3 (en
EP1512782A2 (en
Inventor
Hans-Dieter Scorl
Anton Kuehne
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Itema Switzerland Ltd
Original Assignee
Sultex AG
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Publication date
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Priority to EP04405510A priority Critical patent/EP1512782B1/en
Publication of EP1512782A2 publication Critical patent/EP1512782A2/en
Publication of EP1512782A3 publication Critical patent/EP1512782A3/en
Application granted granted Critical
Publication of EP1512782B1 publication Critical patent/EP1512782B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D03D47/48—Forming selvedges by inserting cut end of weft in next shed, e.g. by tucking, by blowing
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/302—Auxiliary nozzles

Definitions

  • the invention relates to a loom according to the preamble of claim 1, a device for inserting one or more weft ends and for forming a fabric edge according to the preamble of claim 6 and a method for inserting one or more weft ends and for forming a web edge according to the preamble of claim.
  • the weft threads inserted in a shed are cut off at their ends with excess length in a weaving machine and the free ends after the next change of subject, but before the next weft stop, in the open shed inflected.
  • the process for bending which is referred to as textile insertion of the weft yarn, usually takes place either mechanically, pneumatically or pneumo-mechanically.
  • An example of a mechanical loading device with a bar needle is disclosed for example in the patent application DE 1 710 353.
  • An example of a pneumomechanical design is known from EP-A-0 134 377. In this pneumomechanical design, an insertion needle with eyelet is used, in which the thread end is threaded by means of compressed air.
  • the disadvantage of both the mechanical and the pneumo-mechanical insertion devices is that their use, due to the mechanical processes, are limited to certain maximum speeds of the loom.
  • air inlets In order to enable higher weaving machine speeds in the production of fabrics with insert edges, purely pneumatic insertion devices, so-called air inlets, are used.
  • the loading device described in this document comprises a nozzle assembly with a plurality of nozzles arranged outside the fabric width in order to blow the weft thread ends into a shed.
  • the known prior art inserts normally function properly. However, as soon as harder and / or stiffer yarns are used, it is increasingly difficult to produce a flawless fabric edge. Thus, e.g. the yarn ends of stiffer yarns from the inserted position wholly or partially jump back and / or the yarn ends of such yarns penetrate completely or partially through the upper or lower shed before the yarn ends are struck together with the following weft and integrated. The penetration of the upper or lower shed through the weft ends is also referred to as bleeding. Due to the tissue defect caused by improper insertion of the weft ends, the tissue is classified as inferior. Problems can also arise with normally flexible yarns if several, e.g. two weft ends are inserted in the same shed. Often, in this case, one weft end is properly inserted while the other weft end is not properly positioned, e.g. can bleed through.
  • the object of the invention is to provide a weaving machine with a device for inserting one or more weft thread ends and for forming a fabric edge, as well as an apparatus and a method for inserting one or more weft ends and for forming a fabric edge, the fabric defects in consequence not properly reduce inlaid weft ends, and allow to produce flawless fabric edges, even in the case that stiffer yarns used be and / or that multiple weft ends are registered in the same shed.
  • the weaving machine comprises a device for inserting one or more weft thread ends and for forming a web edge, which device comprises a mechanical, pneumatic or pneumo-mechanical insert which can be arranged inside or outside the width of the fabric. Further, a shedding device for forming a shed with a shed tip is provided on the loom.
  • the device for inserting one or more weft thread ends comprises at least one additional blowing nozzle, which is arranged within the fabric width, in particular within the width of the fabric edge, and whose jet direction is directed to the shed tip, in order to blow the weft thread ends into the shed tip.
  • the additional tuyere includes a nozzle opening disposed within the shed.
  • the loom comprises a weft insertion direction and the jet direction of the additional tuyere extends substantially perpendicular to the weft insertion direction.
  • the weaving machine comprises relay nozzles and the additional blowing nozzle is arranged in a row with the relay nozzles.
  • the jet direction of the additional blowing nozzle is adjustable.
  • the additional blowing nozzle is arranged to be adjustable along the weft insertion direction and / or in the height and / or in the warp direction.
  • the weaving machine comprises a batten with stop position and a separating device for separating registered weft threads
  • the weaving machine and / or the device for inserting one or more weft thread ends comprise a controller, which additional tuyere after the separation of the inserted weft threads, preferably during or after the insertion of the weft thread ends, turns on.
  • the controller turns off the additional tuyere before the sley reaches the stop position.
  • the invention further comprises a device for inserting one or more weft thread ends and for forming a fabric edge in a weaving machine with a shed and a shed tip, which device comprises a mechanical, pneumatic or pneumomechanical insert, and at least one additional blowing nozzle, which is designed such that the jet direction of the additional blowing nozzle can be aligned in the direction of the shed tip and the additional blowing nozzle can be inserted within the width of the fabric, in particular within the width of the fabric edge.
  • the additional blowing nozzle is formed such that a nozzle opening thereof is insertable within the shed, in particular that a nozzle opening thereof is insertable within the shed without causing tissue defects in a tissue to be formed.
  • the jet direction of the additional blowing nozzle is adjustable.
  • the additional blowing nozzle is elongated and provided with a fastening which is designed such that the additional blowing nozzle is adjustable in the direction of the elongate extent and / or in a direction perpendicular to the elongate extent and to the beam direction.
  • the invention comprises a method for inserting one or more weft ends and for forming a fabric edge in a loom, in which method a weaving shed is formed on the weaving machine and inserted the weft ends by means of a mechanical, pneumatic or pneumo-mechanical insert into the shed become.
  • the weft thread ends are blown into the shed tip by means of at least one additional blowing nozzle, which is arranged within the fabric width, in particular within the width of the fabric edge, and whose jet direction is directed towards the shed tip.
  • the weft ends are through the additional tuyere held in the sheaf tip.
  • the additional blowing nozzle comprises a nozzle opening which is arranged within the shed, in particular such that no fabric defects are generated by the additional blowing nozzle.
  • the weft threads are entered, struck and separated and the additional tuyere is turned on after the separation of the inserted and damaged weft threads, preferably during or after insertion of the weft ends.
  • the additional tuyere is turned off before the striking of the subsequently inserted weft threads is completed.
  • the weaving machine according to the invention and the device and the method for inserting one or more weft ends according to the present invention have the advantage that the weft thread ends can be blown particularly effectively against the shed tip and smoothed and held there by the at least one additional blowing nozzle.
  • the arrangement of the additional tuyere within the fabric width allows an optimal jet direction for smoothing and holding the weft ends and a shorter distance to the thread tip, which can be better controlled thereby. Thanks to the better control of the thread tip, the so-called bleeding of the thread ends can be largely avoided. This can effectively reduce tissue defects as a result of improperly inserted weft ends.
  • the weaving machine, as well as the device and the method according to the present invention allow to produce flawless fabric edges even in difficult cases, in which stiffer yarns are used or several weft thread ends are registered in the same shed.
  • the loom 1 shows an embodiment of a weaving machine with a device for inserting one or more weft ends 2'a and for forming a fabric edge according to the present invention.
  • the loom 1 is formed in the embodiment as an air jet loom.
  • the apparatus described below for inserting one or more weft thread ends and for forming a web edge in conjunction with other weaving machine types, for example with rapier weaving machines or projectile weaving machines.
  • the device for inserting one or more weft thread ends 2'a and for forming a fabric edge 10 comprises one or more nozzle arrangements 4.1-4.4 arranged outside the fabric width 12 and designed as air inlets.
  • a shedding device for forming a shed with a shed tip is provided on the loom 1, which is not shown in Fig. 1.
  • the weaving machine 1 comprises a main nozzle 3 and a plurality of relay nozzles 5.1 - 5.n for entering a weft thread 2, a sley 8 with Riet and on the weft insertion side and Schussanashsseite ever a separator 7.1, 7.3 to the means of the Main jet and the relay nozzles registered and separated by the reed posted weft thread 2 to separate, and an additional separator 7.2 to cut through the registered and posted weft yarn 2 in the middle.
  • a separator 7.1, 7.3 to the means of the Main jet and the relay nozzles registered and separated by the reed posted weft thread 2 to separate, and an additional separator 7.2 to cut through the registered and posted weft yarn 2 in the middle.
  • Each of the two fabrics has a fabric width 12 and laterally each a fabric edge 10, which is formed by inserting the weft thread ends 2'a.
  • the loom 1 in this embodiment each comprises a device for inserting one or more weft ends, which are arranged in the region of the edges of the fabric.
  • the separating device 7.2 and the two devices for inserting one or more weft ends in the middle can also be omitted, for example to produce a fabric with greater width.
  • the devices for inserting one or more weft thread ends 2'a each comprise at least one additional tuyere 6.1 - 6.4, which are arranged within the fabric width 12, preferably within the width of the respective fabric edge 10, and their beam direction to the shed tip of the shedding device formed shed are directed to blow the respective weft thread ends 2'a in the shed tip.
  • the additional tuyeres 6.1 - 6.4 include nozzle openings disposed within the shed 14. A corresponding arrangement of an additional blowing nozzle is shown in Fig. 3, which is explained in more detail in a section below.
  • FIG. 2 shows a detailed view of a device for inserting one or more weft thread ends 2'a from the embodiment shown in FIG.
  • the device comprises an air feeder 4 and an additional blower nozzle 6, which is arranged within the fabric width 12, preferably within the width of the fabric edge 10, and whose jet direction is directed to the shed tip of a shed formed by a shed forming device in order to form the weft end 2 '. a to blow into the sheaf tip.
  • the additional tuyere 6 on a sley 8 of the loom arranged.
  • the additional tuyere 6 includes a nozzle opening disposed within the shed.
  • the weaving machine has a weft insertion direction 2b, and the additional tuyere 6 is preferably oriented so that the jet direction of the additional tuyere runs essentially perpendicular to the weft insertion direction 2b.
  • the loom comprises relay nozzles 5.1 - 5.n and a sley 8, and the additional tuyere 6 is advantageously arranged together with the relay nozzles 5.1 - 5.n on the sley 8.
  • the additional blowing nozzle 6 is arranged in a row with the relay nozzles 5.1 - 5.n, for example by the additional blowing nozzle and the relay nozzles are attached to a common mounting rail.
  • the device for inserting one or more weft thread ends may comprise additional additional tuyeres 6 ', 6 "in addition to the above-mentioned additional tuyere 6, in order to increase the safety for a perfect insertion of the weft ends
  • a further additional blowing nozzle 6 ', 6 "is provided on both sides of the above-mentioned additional blowing nozzle 6, which are indicated by dashed lines in FIG is, can be arranged inside or outside the fabric width 12.
  • FIG. 3 shows a detailed view of a shed from the exemplary embodiment shown in FIG. 1.
  • the shed 14 is formed by upper and lower warp threads 10a, 10b, which converge in the fabric take-off direction in the shed tip 14a, wherein the shed 14 together with a Riet, of which a Rietlamelle 8a is drawn in Fig. 3, forms a shed triangle.
  • the Rietlamelle 8a comprises a firing channel for guiding a weft thread 2 during entry. Following the truss, weft threads, which form a woven fabric 16, are already arranged in the direction of withdrawal of the fabric. In the illustrated time, the shed tip 14a contains the weft end 2'a of the last weft weft 2 '.
  • the nozzle opening is disposed within the shed 14, and the main beam direction 6a is directed towards the shed tip 14a.
  • Fig. 4 shows a variant of an additional blowing nozzle in section.
  • the additional tuyere 6 has a jet direction 6a which is adjustable, for example by providing in the additional tuyere 6 a spherically shaped insert 6b with a nozzle opening to adjust the jet direction 6a.
  • the additional tuyere 6 can comprise a fastening device by means of which the additional tuyere 6 can be adjusted along the weft insertion direction and / or in the height and / or in the warp direction.
  • the adjustability of the jet direction and the adjustability of the additional tuyere in one or more directions advantageously makes it possible to adapt the nozzle jet of the additional tuyere to different tasks, for example to different fabric and edge widths and / or to different yarns and / or to the entry of several weft ends in the same shed.
  • the additional tuyere 6 includes a nozzle opening disposed within a shed 14 for blowing the weft ends 2'a directly into the shed tip 14a with optimum jet direction.
  • the additional blowing nozzle 6 is formed such that the attachment of the additional blowing nozzle is normally arranged outside and that part of the blowing nozzle containing the nozzle opening, without difficulties between the warp threads, ie from below or above, can penetrate into the shed.
  • the additional tuyere 6 has an elongated shape and a slender cross-section.
  • Appropriately designed nozzles are known for example from air jet looms and are referred to there as relay nozzles.
  • the additional tuyere 6 is designed such that the jet direction is directed to the shed tip.
  • the additional blowing nozzle described under FIG. 4 and / or the above-described preferred embodiment of an additional blowing nozzle can also be understood as objects which are independent of the present application and can be protected in one or more separate applications. The same also applies to a device for inserting one or more weft ends or a weaving machine with such an additional tuyere, or for the use of such an additional tuyere in a device for inserting one or more weft ends or in a weaving machine.
  • a shed 14 with shed tip 14a is formed on the weaving machine and the weft ends 2'a are by means of a mechanical insert and / or outside the fabric width 12 arranged nozzle assembly 4, which may be formed for example as an air feeder, in the shed 14 inserted.
  • the weft ends 2'a are blown into the shed tip by means of at least one additional blowing nozzle 6 which is arranged within the fabric width 12, in particular within the width of the fabric edge 10 and whose jet direction 6a is directed towards the shed tip 14a.
  • the weft ends 2'a are held by the additional tuyere 6 in the shed tip.
  • the additional blowing nozzle 6 comprises a nozzle opening, which is arranged within the shed 14, in particular such that no tissue defects are generated by the additional tuyere 6.
  • the method according to embodiment also includes the control of the additional blowing nozzle 6.
  • the additional blowing nozzle 6 is switched on after the separation of a registered and damaged weft thread 2 'and in particular during or after the insertion of the associated weft end 2'a.
  • the switching off of the additional tuyere 6 is preferably carried out before the weft end 2'a, together with a subsequently inserted weft thread 2, is completely struck, i. if a batten 8 is used with a stop position for striking before the sley 8 has reached the stop position.

Description

Die Erfindung betrifft eine Webmaschine gemäss Oberbegriff von Anspruch 1, eine Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante gemäss Oberbegriff von Anspruch 6 und ein Verfahren zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante gemäss Oberbegriff von Anspruch 9.The invention relates to a loom according to the preamble of claim 1, a device for inserting one or more weft ends and for forming a fabric edge according to the preamble of claim 6 and a method for inserting one or more weft ends and for forming a web edge according to the preamble of claim.

Um eine feste Warenkante zu bilden, werden in einer Webmaschine die in ein Webfach eingetragenen Schussfäden nach Vollendung des Schusseintrages an Ihren Enden mit Überlänge abgeschnitten und die freien Enden nach dem nächsten Fachwechsel, jedoch noch vor dem nächsten Schussfadenanschlag, in das geöffnete Webfach eingebogen. Der Vorgang für das Einbiegen, der textiltechnisch als Einlegen des Schussfadens bezeichnet wird, geschieht in der Regel entweder mechanisch, pneumatisch oder pneumo-mechanisch. Ein Beispiel für eine mechanische Einlegevorrichtung mit einer Leistenlegernadel ist beispielsweise in der Auslegeschrift DE 1 710 353 offenbart. Ein Beispiel für eine pneumomechanische Ausführung ist aus EP-A-0 134 377 bekannt. In dieser pneumomechanische Ausführung wird eine Einlegenadel mit Öse verwendet, in welche das Fadenende mittels Druckluft eingefädelt wird. Der Nachteil sowohl der mechanischen als auch der pneumo-mechanischen Einlegevorrichtungen besteht darin, dass deren Verwendung, bedingt durch die mechanischen Abläufe, auf bestimmte Höchstdrehzahlen der Webmaschine limitiert sind.In order to form a solid edge, the weft threads inserted in a shed are cut off at their ends with excess length in a weaving machine and the free ends after the next change of subject, but before the next weft stop, in the open shed inflected. The process for bending, which is referred to as textile insertion of the weft yarn, usually takes place either mechanically, pneumatically or pneumo-mechanically. An example of a mechanical loading device with a bar needle is disclosed for example in the patent application DE 1 710 353. An example of a pneumomechanical design is known from EP-A-0 134 377. In this pneumomechanical design, an insertion needle with eyelet is used, in which the thread end is threaded by means of compressed air. The disadvantage of both the mechanical and the pneumo-mechanical insertion devices is that their use, due to the mechanical processes, are limited to certain maximum speeds of the loom.

Um bei der Herstellung von Geweben mit Einlegekanten dennoch höhere Webmaschinendrehzahlen zu ermöglichen, werden rein pneumatische Einlegevorrichtungen, sogenannte Lufteinleger, eingesetzt. Ein typisches Beispiel einer derartigen pneumatischen Einlegevorrichtung, die auch als Luftleistenleger oder Air Tucker bezeichnet wird, kann dem Dokument EP-A-1 088 922, das als nächstliegender Stand der Technik angesehen wird, entnommen werden. Die in diesem Dokument beschriebene Einlegevorrichtung umfasst eine ausserhalb der Warenbreite angeordnete Düsenanordnung mit mehreren Düsen, um die Schussfadenenden in ein Webfach zu blasen.However, in order to enable higher weaving machine speeds in the production of fabrics with insert edges, purely pneumatic insertion devices, so-called air inlets, are used. A typical example of such a pneumatic inserter, also referred to as a airfoil or Air Tucker, can be found in document EP-A-1 088 922, which is considered to be the closest prior art. The loading device described in this document comprises a nozzle assembly with a plurality of nozzles arranged outside the fabric width in order to blow the weft thread ends into a shed.

Bei weichen und biegsamen Schussgarnen funktionieren die bekannten Einleger aus dem Stand der Technik normalerweise einwandfrei. Sobald jedoch härtere und/oder steifere Garne eingesetzt werden, ist es zunehmend schwieriger, eine einwandfreie Warenkante herzustellen. So können z.B. die Fadenenden von steiferen Garnen aus der eingelegten Position ganz oder teilweise zurückspringen und/oder die Fadenenden derartiger Garne dringen ganz oder teilweise durch das Ober- oder Unterfach, bevor die Fadenenden zusammen mit dem nachfolgenden Schussfaden angeschlagen und eingebunden werden. Das Durchdringen des Ober- oder Unterfaches durch die Schussfadenenden wird auch als Durchbluten bezeichnet. Auf Grund der durch das nicht ordnungsgemässe Einlegen der Schussfadenenden verursachte Gewebefehler wird das Gewebe als minderwertig klassiert. Probleme können auch mit normal biegsamen Garnen entstehen, wenn mehrere, z.B. zwei Schussfadenenden in dasselbe Webfach eingelegt werden. Häufig ist in diesem Fall ein Schussfadenende ordnungsgemäss eingelegt, während das andere Schussfadenende nicht ordnungsgemäss positioniert ist und z.B. durchbluten kann.For soft and flexible weft yarns, the known prior art inserts normally function properly. However, as soon as harder and / or stiffer yarns are used, it is increasingly difficult to produce a flawless fabric edge. Thus, e.g. the yarn ends of stiffer yarns from the inserted position wholly or partially jump back and / or the yarn ends of such yarns penetrate completely or partially through the upper or lower shed before the yarn ends are struck together with the following weft and integrated. The penetration of the upper or lower shed through the weft ends is also referred to as bleeding. Due to the tissue defect caused by improper insertion of the weft ends, the tissue is classified as inferior. Problems can also arise with normally flexible yarns if several, e.g. two weft ends are inserted in the same shed. Often, in this case, one weft end is properly inserted while the other weft end is not properly positioned, e.g. can bleed through.

Aufgabe der Erfindung ist es, eine Webmaschine mit einer Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante sowie eine Vorrichtung und ein Verfahren zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante zur Verfügung zu stellen, die Gewebefehler in Folge nicht ordnungsgemäss eingelegter Schussfadenenden reduzieren, und die erlauben, einwandfreie Warenkanten herzustellen, auch im Fall, dass steifere Garne eingesetzt werden und/oder dass mehrere Schussfadenenden in dasselbe Webfach eingetragen werden.The object of the invention is to provide a weaving machine with a device for inserting one or more weft thread ends and for forming a fabric edge, as well as an apparatus and a method for inserting one or more weft ends and for forming a fabric edge, the fabric defects in consequence not properly reduce inlaid weft ends, and allow to produce flawless fabric edges, even in the case that stiffer yarns used be and / or that multiple weft ends are registered in the same shed.

Diese Aufgabe wird erfindungsgemäss durch die in Anspruch 1 definierte Webmaschine, sowie durch die in Anspruch 6 definierte Vorrichtung und das in Anspruch 9 definierte Verfahren zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante gelöst.This object is achieved according to the invention by the weaving machine defined in claim 1, as well as by the apparatus defined in claim 6 and the method defined in claim 9 for inserting one or more weft thread ends and for forming a fabric edge.

Die erfindungsgemässe Webmaschine umfasst eine Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante, welche Vorrichtung einen mechanischen, pneumatischen oder pneumo-mechanischen Einleger umfasst, der innerhalb oder ausserhalb der Warenbreite angeordnet sein kann. Weiter ist auf der Webmaschine eine Fachbildevorrichtung zur Bildung eines Webfaches mit Webfachspitze vorgesehen. In der erfindungsgemässen Webmaschine umfasst die Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden mindestens eine zusätzliche Blasdüse, die innerhalb der Warenbreite, insbesondere innerhalb der Breite der Warenkante, angeordnet ist, und deren Strahlrichtung zur Webfachspitze gerichtet ist, um die Schussfadenenden in die Webfachspitze zu blasen. Vorzugsweise umfasst die zusätzliche Blasdüse eine Düsenöffnung, die innerhalb des Webfaches angeordnet ist.The weaving machine according to the invention comprises a device for inserting one or more weft thread ends and for forming a web edge, which device comprises a mechanical, pneumatic or pneumo-mechanical insert which can be arranged inside or outside the width of the fabric. Further, a shedding device for forming a shed with a shed tip is provided on the loom. In the weaving machine according to the invention, the device for inserting one or more weft thread ends comprises at least one additional blowing nozzle, which is arranged within the fabric width, in particular within the width of the fabric edge, and whose jet direction is directed to the shed tip, in order to blow the weft thread ends into the shed tip. Preferably, the additional tuyere includes a nozzle opening disposed within the shed.

Vorzugsweise umfasst die Webmaschine eine Schusseintragsrichtung und die Strahlrichtung der zusätzlichen Blasdüse verläuft im Wesentlichen senkrecht zur Schusseintragsrichtung. Vorzugsweise umfasst die Webmaschine Stafettendüsen und die zusätzliche Blasdüse ist in einer Reihe mit den Stafettendüsen angeordnet. In einer bevorzugten Ausführungsvariante ist die Strahlrichtung der zusätzlichen Blasdüse einstellbar. In einer weiteren bevorzugten Ausführungsvariante ist die zusätzliche Blasdüse entlang der Schusseintragsrichtung und/oder in der Höhe und/oder in Kettrichtung verstellbar angeordnet.Preferably, the loom comprises a weft insertion direction and the jet direction of the additional tuyere extends substantially perpendicular to the weft insertion direction. Preferably, the weaving machine comprises relay nozzles and the additional blowing nozzle is arranged in a row with the relay nozzles. In a preferred embodiment, the jet direction of the additional blowing nozzle is adjustable. In a further preferred embodiment variant, the additional blowing nozzle is arranged to be adjustable along the weft insertion direction and / or in the height and / or in the warp direction.

Vorzugsweise umfasst die Webmaschine eine Weblade mit Anschlagstellung und eine Trennvorrichtung zum Abtrennen eingetragener Schussfäden, und die Webmaschine und/oder die Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden umfassen eine Steuerung, welche die zusätzliche Blasdüse nach dem Abtrennen der eingetragenen Schussfäden, vorzugsweise während oder nach dem Einlegen der Schussfadenenden, einschaltet. Vorzugsweise schaltet die Steuerung die zusätzliche Blasdüse aus, bevor die Weblade die Anschlagstellung erreicht.Preferably, the weaving machine comprises a batten with stop position and a separating device for separating registered weft threads, and the weaving machine and / or the device for inserting one or more weft thread ends comprise a controller, which additional tuyere after the separation of the inserted weft threads, preferably during or after the insertion of the weft thread ends, turns on. Preferably, the controller turns off the additional tuyere before the sley reaches the stop position.

Weiter umfasst die Erfindung eine Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante in einer Webmaschine mit einem Webfach und einer Webfachspitze, welche Vorrichtung einen mechanischen, pneumatischen oder pneumomechanischen Einleger umfasst, sowie mindestens eine zusätzliche Blasdüse, die derart ausgebildet ist, dass die Strahlrichtung der zusätzlichen Blasdüse in Richtung zur Webfachspitze ausrichtbar ist und die zusätzliche Blasdüse innerhalb der Warenbreite, insbesondere innerhalb der Breite der Warenkante einsetzbar ist. Vorzugsweise ist die zusätzliche Blasdüse derart ausgebildet, dass eine Düsenöffnung derselben innerhalb des Webfaches einsetzbar ist, insbesondere dass eine Düsenöffnung derselben innerhalb des Webfaches einsetzbar ist, ohne in einem zu bildenden Gewebe Gewebefehler zu verursachen.The invention further comprises a device for inserting one or more weft thread ends and for forming a fabric edge in a weaving machine with a shed and a shed tip, which device comprises a mechanical, pneumatic or pneumomechanical insert, and at least one additional blowing nozzle, which is designed such that the jet direction of the additional blowing nozzle can be aligned in the direction of the shed tip and the additional blowing nozzle can be inserted within the width of the fabric, in particular within the width of the fabric edge. Preferably, the additional blowing nozzle is formed such that a nozzle opening thereof is insertable within the shed, in particular that a nozzle opening thereof is insertable within the shed without causing tissue defects in a tissue to be formed.

In einer bevorzugten Ausführungsvariante ist die Strahlrichtung der zusätzlichen Blasdüse einstellbar. In einer weiteren bevorzugten Ausführungsvariante ist die zusätzliche Blasdüse länglich geformt und mit einer Befestigung versehen, die derart ausgebildet ist, dass die zusätzliche Blasdüse in Richtung der länglichen Ausdehnung und/oder in einer Richtung senkrecht zur länglichen Ausdehnung und zur Strahlrichtung verstellbar ist.In a preferred embodiment, the jet direction of the additional blowing nozzle is adjustable. In a further preferred embodiment, the additional blowing nozzle is elongated and provided with a fastening which is designed such that the additional blowing nozzle is adjustable in the direction of the elongate extent and / or in a direction perpendicular to the elongate extent and to the beam direction.

Weiter umfasst die Erfindung ein Verfahren zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante in einer Webmaschine, in welchem Verfahren auf der Webmaschine ein Webfach mit Webfachspitze gebildet wird und die Schussfadenenden mittels eines mechanischen, pneumatischen oder pneumo-mechanischen Einlegers in das Webfach eingelegt werden. Zusätzlich werden die Schussfadenenden mittels mindestens einer zusätzlichen Blasdüse, die innerhalb der Warenbreite, insbesondere innerhalb der Breite der Warenkante, angeordnet ist, und deren Strahlrichtung zur Webfachspitze gerichtet ist, in die Webfachspitze geblasen. Vorzugsweise werden die Schussfadenenden durch die zusätzliche Blasdüse in der Webfachspitze festgehalten. Vorzugsweise umfasst die zusätzliche Blasdüse eine Düsenöffnung, die innerhalb des Webfaches angeordnet ist, insbesondere derart, dass durch die zusätzliche Blasdüse keine Gewebefehler erzeugt werden.Furthermore, the invention comprises a method for inserting one or more weft ends and for forming a fabric edge in a loom, in which method a weaving shed is formed on the weaving machine and inserted the weft ends by means of a mechanical, pneumatic or pneumo-mechanical insert into the shed become. In addition, the weft thread ends are blown into the shed tip by means of at least one additional blowing nozzle, which is arranged within the fabric width, in particular within the width of the fabric edge, and whose jet direction is directed towards the shed tip. Preferably, the weft ends are through the additional tuyere held in the sheaf tip. Preferably, the additional blowing nozzle comprises a nozzle opening which is arranged within the shed, in particular such that no fabric defects are generated by the additional blowing nozzle.

In einer bevorzugten Ausführungsform werden die Schussfäden eingetragen, angeschlagen und abgetrennt und die zusätzliche Blasdüse wird nach dem Abtrennen der eingetragenen und angeschlagenen Schussfäden, vorzugsweise während oder nach dem Einlegen der Schussfadenenden, eingeschaltet. Vorzugsweise wird die zusätzliche Blasdüse, bevor das Anschlagen der nachfolgend eingetragenen Schussfäden abgeschlossen ist, ausgeschaltet.In a preferred embodiment, the weft threads are entered, struck and separated and the additional tuyere is turned on after the separation of the inserted and damaged weft threads, preferably during or after insertion of the weft ends. Preferably, the additional tuyere is turned off before the striking of the subsequently inserted weft threads is completed.

Die erfindungsgemässe Webmaschine und die Vorrichtung und das Verfahren zum Einlegen eines oder mehrerer Schussfadenenden gemäss vorliegender Erfindung haben den Vorteil, dass die Schussfadenenden durch die mindestens eine zusätzliche Blasdüse besonders wirksam gegen die Webfachspitze geblasen und dort geglättet und festgehalten werden können. Die Anordnung der zusätzlichen Blasdüse innerhalb der Warenbreite ermöglicht eine optimale Strahlrichtung für das Glätten und Festhalten der Schussfadenenden und einen kürzeren Abstand zur Fadenspitze, die dadurch besser unter Kontrolle gehalten werden kann. Dank der besseren Kontrolle der Fadenspitze lässt sich das sogenannte Durchbluten der Fadenspitzen weitgehend vermeiden. Damit können Gewebefehler in Folge nicht ordnungsgemäss eingelegter Schussfadenenden wirksam reduziert werden. Die Webmaschine, sowie die Vorrichtung und das Verfahren gemäss der vorliegenden Erfindung erlauben auch in schwierigen Fällen, in denen steifere Garne eingesetzt oder mehrere Schussfadenenden in dasselbe Webfach eingetragen werden, einwandfreie Warenkanten herzustellen.The weaving machine according to the invention and the device and the method for inserting one or more weft ends according to the present invention have the advantage that the weft thread ends can be blown particularly effectively against the shed tip and smoothed and held there by the at least one additional blowing nozzle. The arrangement of the additional tuyere within the fabric width allows an optimal jet direction for smoothing and holding the weft ends and a shorter distance to the thread tip, which can be better controlled thereby. Thanks to the better control of the thread tip, the so-called bleeding of the thread ends can be largely avoided. This can effectively reduce tissue defects as a result of improperly inserted weft ends. The weaving machine, as well as the device and the method according to the present invention allow to produce flawless fabric edges even in difficult cases, in which stiffer yarns are used or several weft thread ends are registered in the same shed.

Weitere vorteilhafte Ausführungsformen gehen aus den abhängigen Ansprüchen und der Zeichnung hervor.Further advantageous embodiments will become apparent from the dependent claims and the drawings.

Im Folgenden wird die Erfindung an Hand des Ausführungsbeispiels und an Hand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
ein Ausführungsbeispiel einer Webmaschine mit einer Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden gemäss vorliegender Erfindung,
Fig. 2
eine Detailansicht einer Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden aus dem in Fig. 1 gezeigten Ausführungsbeispiel,
Fig. 3
eine Detailansicht eines Webfaches aus dem in Fig. 1 gezeigten Ausführungsbeispiel und
Fig. 4
eine Ausführungsvariante einer zusätzlichen Blasdüse im Schnitt.
In the following the invention will be explained in more detail with reference to the embodiment and with reference to the drawing. Show it:
Fig. 1
An embodiment of a loom with a device for inserting one or more weft ends according to the present invention,
Fig. 2
a detailed view of an apparatus for inserting one or more weft thread ends of the embodiment shown in Fig. 1,
Fig. 3
a detailed view of a shed from the embodiment shown in FIG. 1 and
Fig. 4
an embodiment of an additional blowing nozzle in section.

Fig. 1 zeigt ein Ausführungsbeispiel einer Webmaschine mit einer Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden 2'a und zur Bildung einer Warenkante gemäss vorliegender Erfindung. Die Webmaschine 1 ist im Ausführungsbeispiel als Luftdüsenwebmaschine ausgebildet. Es ist jedoch auch möglich, die nachfolgend beschriebene Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante in Verbindung mit anderen Webmaschinentypen, beispielsweise mit Greiferwebmaschinen oder Projektilwebmaschinen einzusetzen. Die Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden 2'a und zur Bildung einer Warenkante 10 umfasst im Ausführungsbeispiel eine oder mehrere ausserhalb der Warenbreite 12 angeordnete Düsenanordnungen 4.1 - 4.4, die als Lufteinleger ausgebildet sind. An Stelle der Lufteinleger können auch mechanische Einleger eingesetzt werden oder pneumomechanische Einleger, deren Düsen ausserhalb der Warenbreite angeordnet sind. Weiter ist auf der Webmaschine 1 eine Fachbildevorrichtung zur Bildung eines Webfaches mit Webfachspitze vorgesehen, die in Fig. 1 nicht gezeigt ist.1 shows an embodiment of a weaving machine with a device for inserting one or more weft ends 2'a and for forming a fabric edge according to the present invention. The loom 1 is formed in the embodiment as an air jet loom. However, it is also possible to use the apparatus described below for inserting one or more weft thread ends and for forming a web edge in conjunction with other weaving machine types, for example with rapier weaving machines or projectile weaving machines. In the exemplary embodiment, the device for inserting one or more weft thread ends 2'a and for forming a fabric edge 10 comprises one or more nozzle arrangements 4.1-4.4 arranged outside the fabric width 12 and designed as air inlets. Instead of the air inserts, it is also possible to use mechanical inserts or pneumomechanical inserts whose nozzles are arranged outside the width of the product. Further, a shedding device for forming a shed with a shed tip is provided on the loom 1, which is not shown in Fig. 1.

In der in Fig. 1 gezeigten Ausführungsvariante umfasst die Webmaschine 1 eine Hauptdüse 3 und mehrere Stafettendüsen 5.1 - 5.n zum Eintragen eines Schussfadens 2, eine Weblade 8 mit Riet und auf der Schusseintragsseite und Schussankunftsseite je eine Trennvorrichtung 7.1, 7.3, um den mittels der Hauptdüse und der Stafettendüsen eingetragenen und mittels des Rietes angeschlagenen Schussfaden 2 abzutrennen, sowie eine zusätzliche Trennvorrichtung 7.2, um den eingetragenen und angeschlagenen Schussfaden 2 in der Mitte durchzutrennen. Auf diese Weise können gleichzeitig zwei Gewebe nebeneinander hergestellt werden. Jedes der beiden Gewebe hat eine Warenbreite 12 und seitlich je eine Warenkante 10, die durch Einlegen der Schussfadenenden 2'a gebildet wird. Zur Bildung der vier Warenkanten umfasst die Webmaschine 1 in dieser Ausführungsvariante je eine Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden, die im Bereich der Warenkanten angeordnet sind. Selbstverständlich können die Trennvorrichtung 7.2 und die zwei Vorrichtungen zum Einlegen eines oder mehrerer Schussfadenenden in der Mitte auch weggelassen werden, um z.B. ein Gewebe mit grösserer Warenbreite herzustellen.In the embodiment shown in Fig. 1, the weaving machine 1 comprises a main nozzle 3 and a plurality of relay nozzles 5.1 - 5.n for entering a weft thread 2, a sley 8 with Riet and on the weft insertion side and Schussankunftsseite ever a separator 7.1, 7.3 to the means of the Main jet and the relay nozzles registered and separated by the reed posted weft thread 2 to separate, and an additional separator 7.2 to cut through the registered and posted weft yarn 2 in the middle. In this way, two fabrics can be produced side by side at the same time. Each of the two fabrics has a fabric width 12 and laterally each a fabric edge 10, which is formed by inserting the weft thread ends 2'a. In order to form the four edges of the fabric, the loom 1 in this embodiment each comprises a device for inserting one or more weft ends, which are arranged in the region of the edges of the fabric. Of course, the separating device 7.2 and the two devices for inserting one or more weft ends in the middle can also be omitted, for example to produce a fabric with greater width.

Im Ausführungsbeispiel umfasst die Vorrichtungen zum Einlegen eines oder mehrerer Schussfadenenden 2'a je mindestens eine zusätzliche Blasdüse 6.1 - 6.4, die innerhalb der Warenbreite 12, vorzugsweise innerhalb der Breite der jeweiligen Warenkante 10, angeordnet sind, und deren Strahlrichtung zur Webfachspitze eines mittels der Fachbildevorrichtung gebildeten Webfaches gerichtet sind, um die jeweiligen Schussfadenenden 2'a in die Webfachspitze zu blasen. In einer bevorzugten Ausführungsform umfassen die zusätzlichen Blasdüsen 6.1 - 6.4 Düsenöffnungen, die innerhalb des Webfaches 14 angeordnet sind. Eine entsprechende Anordnung einer zusätzlichen Blasdüse ist in Fig. 3 dargestellt, die in einem nachstehenden Abschnitt näher erläutert ist.In the exemplary embodiment, the devices for inserting one or more weft thread ends 2'a each comprise at least one additional tuyere 6.1 - 6.4, which are arranged within the fabric width 12, preferably within the width of the respective fabric edge 10, and their beam direction to the shed tip of the shedding device formed shed are directed to blow the respective weft thread ends 2'a in the shed tip. In a preferred embodiment, the additional tuyeres 6.1 - 6.4 include nozzle openings disposed within the shed 14. A corresponding arrangement of an additional blowing nozzle is shown in Fig. 3, which is explained in more detail in a section below.

Fig. 2 zeigt eine Detailansicht einer Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden 2'a aus dem in Fig. 1 gezeigten Ausführungsbeispiel. Die Vorrichtung umfasst im Ausführungsbeispiel einen Lufteinleger 4 und eine zusätzliche Blasdüse 6, die innerhalb der Warenbreite 12, vorzugsweise innerhalb der Breite der Warenkante 10, angeordnet ist, und deren Strahlrichtung zur Webfachspitze eines mittels einer Fachbildevorrichtung gebildeten Webfaches gerichtet ist, um das Schussfadenende 2'a in die Webfachspitze zu blasen. Vorteilhafterweise ist die zusätzliche Blasdüse 6 auf einer Weblade 8 der Webmaschine angeordnet. In einer bevorzugten Ausführungsform umfasst die zusätzliche Blasdüse 6 eine Düsenöffnung, die innerhalb des Webfaches angeordnet ist.FIG. 2 shows a detailed view of a device for inserting one or more weft thread ends 2'a from the embodiment shown in FIG. In the exemplary embodiment, the device comprises an air feeder 4 and an additional blower nozzle 6, which is arranged within the fabric width 12, preferably within the width of the fabric edge 10, and whose jet direction is directed to the shed tip of a shed formed by a shed forming device in order to form the weft end 2 '. a to blow into the sheaf tip. Advantageously, the additional tuyere 6 on a sley 8 of the loom arranged. In a preferred embodiment, the additional tuyere 6 includes a nozzle opening disposed within the shed.

Im Ausführungsbeispiel weist die Webmaschine eine Schusseintragsrichtung 2b auf, und die zusätzlichen Blasdüse 6 ist vorzugsweise so orientiert, dass die Strahlrichtung der zusätzlichen Blasdüse im Wesentlichen senkrecht zur Schusseintragsrichtung 2b verläuft. In der in den Figuren 1 und 2 gezeigten Ausführungsvariante umfasst die Webmaschine Stafettendüsen 5.1 - 5.n und eine Weblade 8, und die zusätzliche Blasdüse 6 ist vorteilhafterweise zusammen mit den Stafettendüsen 5.1 - 5.n auf der Weblade 8 angeordnet. Vorzugsweise ist die zusätzliche Blasdüse 6 in einer Reihe mit den Stafettendüsen 5.1 - 5.n angeordnet, beispielsweise indem die zusätzliche Blasdüse und die Stafettendüsen an einer gemeinsamen Befestigungsschiene befestigt sind.In the exemplary embodiment, the weaving machine has a weft insertion direction 2b, and the additional tuyere 6 is preferably oriented so that the jet direction of the additional tuyere runs essentially perpendicular to the weft insertion direction 2b. In the embodiment variant shown in FIGS. 1 and 2, the loom comprises relay nozzles 5.1 - 5.n and a sley 8, and the additional tuyere 6 is advantageously arranged together with the relay nozzles 5.1 - 5.n on the sley 8. Preferably, the additional blowing nozzle 6 is arranged in a row with the relay nozzles 5.1 - 5.n, for example by the additional blowing nozzle and the relay nozzles are attached to a common mounting rail.

In einer bevorzugten Ausführungsvariante kann die Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden neben der oben genannten zusätzlichen Blasdüse 6 weitere zusätzliche Blasdüsen 6', 6" umfassen, um die Sicherheit für ein einwandfreies Einlegen der Schussfadenenden zu erhöhen. Vorteilhafterweise sind die zusätzlichen Blasdüsen 6, 6', 6" auf einer Weblade 8 der Webmaschine angeordnet. In Fig. 2 sind beispielsweise auf beiden Seiten der oben genannten zusätzlichen Blasdüse 6 je eine weitere zusätzliche Blasdüse 6', 6" vorgesehen, die in Fig. 2 gestrichelt eingezeichnet sind. Die weitere zusätzliche Blasdüse 6', die in Fig. 2 links eingezeichnet ist, kann innerhalb oder ausserhalb der Warenbreite 12 angeordnet sein.In a preferred embodiment, the device for inserting one or more weft thread ends may comprise additional additional tuyeres 6 ', 6 "in addition to the above-mentioned additional tuyere 6, in order to increase the safety for a perfect insertion of the weft ends Advantageously, the additional tuyeres 6, 6 ', 6 "arranged on a sley 8 of the loom. 2, for example, a further additional blowing nozzle 6 ', 6 "is provided on both sides of the above-mentioned additional blowing nozzle 6, which are indicated by dashed lines in FIG is, can be arranged inside or outside the fabric width 12.

Fig. 3 zeigt eine Detailansicht eines Webfaches aus dem in Fig. 1 gezeigten Ausführungsbeispiel. Das Webfach 14 wird durch obere und untere Kettfäden 10a, 10b gebildet, die in Warenabzugsrichtung in der Webfachspitze 14a zusammenlaufen, wobei das Webfach 14 zusammen mit einem Riet, von dem in Fig. 3 eine Rietlamelle 8a eingezeichnet ist, ein Fachdreieck bildet. Die Rietlamelle 8a umfasst einen Schusskanal zur Führung eines Schussfadens 2 während dem Eintragen. Anschliessend an das Fachdreieck sind in Warenabzugsrichtung bereits eingebunden Schussfäden angeordnet, die ein Gewebe 16 bilden. Im dargestellten Zeitpunkt enthält die Webfachspitze 14a das Schussfadenende 2'a des zuletzt angeschlagenen Schussfadens 2'. Von der Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden 2'a des oben beschriebenen Ausführungsbeispiels ist in Fig. 3 lediglich die zusätzliche Blasdüse 6 eingezeichnet, deren Düsenöffnung innerhalb des Webfaches 14 angeordnet ist, und deren Hauptstrahlrichtung 6a in Richtung zur Webfachspitze 14a gerichtet ist.FIG. 3 shows a detailed view of a shed from the exemplary embodiment shown in FIG. 1. The shed 14 is formed by upper and lower warp threads 10a, 10b, which converge in the fabric take-off direction in the shed tip 14a, wherein the shed 14 together with a Riet, of which a Rietlamelle 8a is drawn in Fig. 3, forms a shed triangle. The Rietlamelle 8a comprises a firing channel for guiding a weft thread 2 during entry. Following the truss, weft threads, which form a woven fabric 16, are already arranged in the direction of withdrawal of the fabric. In the illustrated time, the shed tip 14a contains the weft end 2'a of the last weft weft 2 '. From the device for inserting one or more weft ends 2'a of the embodiment described above in Fig. 3, only the additional tuyere 6 is located, the nozzle opening is disposed within the shed 14, and the main beam direction 6a is directed towards the shed tip 14a.

Fig. 4 zeigt eine Ausführungsvariante einer zusätzlichen Blasdüse im Schnitt. Vorzugsweise weist die zusätzliche Blasdüse 6 eine Strahlrichtung 6a auf, die einstellbar ist, beispielsweise indem in der zusätzlichen Blasdüse 6 ein sphärisch geformter Einsatz 6b mit einer Düsenöffnung vorgesehen ist, um die Strahlrichtung 6a einzustellen. An Stelle oder zusätzlich zur Einstellbarkeit der Strahlrichtung kann die zusätzliche Blasdüse 6 eine Befestigungsvorrichtung umfassen, mittels welcher die zusätzliche Blasdüse 6 entlang der Schusseintragsrichtung und/oder in der Höhe und/oder in Kettrichtung verstellbar ist. Die Einstellbarkeit der Strahlrichtung und die Verstellbarkeit der zusätzlichen Blasdüse in eine oder mehrere Richtungen ermöglicht in vorteilhafter Weise, den Düsenstrahl der zusätzlichen Blasdüse an verschiedene Aufgabenstellungen anzupassen, beispielsweise an unterschiedliche Waren- und Kantenbreiten und/oder an unterschiedliche Garne und/oder an das Eintragen von mehreren Schussfadenenden in dasselbe Webfach.Fig. 4 shows a variant of an additional blowing nozzle in section. Preferably, the additional tuyere 6 has a jet direction 6a which is adjustable, for example by providing in the additional tuyere 6 a spherically shaped insert 6b with a nozzle opening to adjust the jet direction 6a. Instead of or in addition to the adjustability of the jet direction, the additional tuyere 6 can comprise a fastening device by means of which the additional tuyere 6 can be adjusted along the weft insertion direction and / or in the height and / or in the warp direction. The adjustability of the jet direction and the adjustability of the additional tuyere in one or more directions advantageously makes it possible to adapt the nozzle jet of the additional tuyere to different tasks, for example to different fabric and edge widths and / or to different yarns and / or to the entry of several weft ends in the same shed.

In einer bevorzugten Ausführungsform umfasst die zusätzliche Blasdüse 6 eine Düsenöffnung, die innerhalb eines Webfaches 14 angeordnet ist, um die Schussfadenenden 2'a direkt und mit optimaler Strahlrichtung in die Webfachspitze 14a zu blasen. In dieser Ausführungsvariante ist die zusätzliche Blasdüse 6 derart ausgebildet, dass die Befestigung der zusätzlichen Blasdüse normalerweise ausserhalb angeordnet ist und derjenige Teil der Blasdüse, welcher die Düsenöffnung enthält, ohne Schwierigkeiten zwischen den Kettfäden hindurch, d.h. von unten oder oben, ins Webfach eindringen kann. Eine entsprechende Ausbildung der zusätzlichen Blasdüse 6 ist bei dieser Ausführungsvariante unerlässlich, da sonst beim Fachwechsel oder wenn die zusätzliche Blasdüse auf einer Weblade montiert ist und wenn beim Anschlagen der Schussfäden die Düsenöffnung ausserhalb des Webfaches zu liegen kommt und anschliessend wieder ins Webfach eintritt, die Kettfäden verschoben oder beschädigt werden können, was zu störenden Gewebefehlern führen kann. Vorzugsweise weist die zusätzliche Blasdüse 6 eine längliche Form und einen schlanken Querschnitt auf. Entsprechend ausgebildete Düsen sind beispielsweise von Luftdüsenwebmaschinen bekannt und werden dort als Stafettendüsen bezeichnet. Im Unterschied zu den Stafettendüsen, deren Strahlrichtung fest in Schusseintragsrichtung weist, ist die zusätzliche Blasdüse 6 derart ausgebildet, dass die Strahlrichtung zur Webfachspitze gerichtet ist.In a preferred embodiment, the additional tuyere 6 includes a nozzle opening disposed within a shed 14 for blowing the weft ends 2'a directly into the shed tip 14a with optimum jet direction. In this embodiment, the additional blowing nozzle 6 is formed such that the attachment of the additional blowing nozzle is normally arranged outside and that part of the blowing nozzle containing the nozzle opening, without difficulties between the warp threads, ie from below or above, can penetrate into the shed. A corresponding design of the additional tuyere 6 is essential in this embodiment, since otherwise when changing the tray or if the additional tuyere is mounted on a sley and if the nozzle opening comes to lie outside the shed when hitting the weft threads and then re-enters the shed, the warp threads moved or can be damaged, which can lead to disturbing tissue defects. Preferably, the additional tuyere 6 has an elongated shape and a slender cross-section. Appropriately designed nozzles are known for example from air jet looms and are referred to there as relay nozzles. In contrast to the relay nozzles whose jet direction points firmly in weft insertion direction, the additional tuyere 6 is designed such that the jet direction is directed to the shed tip.

Die unter Figur 4 beschriebene zusätzliche Blasdüse und/oder die oben beschriebene bevorzugte Ausführungsform einer zusätzlichen Blasdüse können auch als Gegenstände aufgefasst werden, die von der vorliegenden Anmeldung unabhängig sind und in einer oder mehreren eigenen Anmeldungen geschützt werden können. Dasselbe gilt auch für eine Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden oder eine Webmaschine mit einer derartigen zusätzlichen Blasdüse, oder für die Verwendung einer derartigen zusätzlichen Blasdüse in einer Vorrichtung zum Einlegen eines oder mehrerer Schussfadenenden oder in einer Webmaschine.The additional blowing nozzle described under FIG. 4 and / or the above-described preferred embodiment of an additional blowing nozzle can also be understood as objects which are independent of the present application and can be protected in one or more separate applications. The same also applies to a device for inserting one or more weft ends or a weaving machine with such an additional tuyere, or for the use of such an additional tuyere in a device for inserting one or more weft ends or in a weaving machine.

Ein Ausführungsbeispiel eines Verfahrens zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante in einer Webmaschine gemäss vorliegender Erfindung wird nachstehend unter Bezugnahme auf die Figuren 2 und 3 beschrieben. In dem Verfahren gemäss Ausführungsbeispiel wird auf der Webmaschine ein Webfach 14 mit Webfachspitze 14a gebildet und die Schussfadenenden 2'a werden mittels eines mechanischen Einlegers und/oder einer ausserhalb der Warenbreite 12 angeordneten Düsenanordnung 4, die beispielsweise als Lufteinleger ausgebildet sein kann, in das Webfach 14 eingelegt. Zusätzlich werden die Schussfadenenden 2'a mittels mindestens einer zusätzlichen Blasdüse 6, die innerhalb der Warenbreite 12, insbesondere innerhalb der Breite der Warenkante 10, angeordnet ist, und deren Strahlrichtung 6a zur Webfachspitze 14a gerichtet ist, in die Webfachspitze geblasen. Vorzugsweise werden die Schussfadenenden 2'a durch die zusätzliche Blasdüse 6 in der Webfachspitze festgehalten. Vorzugsweise umfasst die zusätzliche Blasdüse 6 eine Düsenöffnung, die innerhalb des Webfaches 14 angeordnet ist, insbesondere derart, dass durch die zusätzliche Blasdüse 6 keine Gewebefehler erzeugt werden.An exemplary embodiment of a method for inserting one or more weft thread ends and for forming a product edge in a weaving machine according to the present invention will be described below with reference to FIGS. 2 and 3. In the method according to the embodiment, a shed 14 with shed tip 14a is formed on the weaving machine and the weft ends 2'a are by means of a mechanical insert and / or outside the fabric width 12 arranged nozzle assembly 4, which may be formed for example as an air feeder, in the shed 14 inserted. In addition, the weft ends 2'a are blown into the shed tip by means of at least one additional blowing nozzle 6 which is arranged within the fabric width 12, in particular within the width of the fabric edge 10 and whose jet direction 6a is directed towards the shed tip 14a. Preferably, the weft ends 2'a are held by the additional tuyere 6 in the shed tip. Preferably, the additional blowing nozzle 6 comprises a nozzle opening, which is arranged within the shed 14, in particular such that no tissue defects are generated by the additional tuyere 6.

In einer vorteilhaften Ausführungsvariante umfasst das Verfahren gemäss Ausführungsbeispiel auch die Steuerung der zusätzlichen Blasdüse 6. Die zusätzliche Blasdüse 6 wird nach dem Abtrennen eines eingetragenen und angeschlagenen Schussfadens 2' und insbesondere während oder nach dem Einlegen des zugehörigen Schussfadenendes 2'a eingeschaltet. Das Ausschalten der zusätzlichen Blasdüse 6 erfolgt vorzugsweise, bevor das Schussfadenende 2'a zusammen mit einem nachfolgend eingetragenen Schussfaden 2 fertig angeschlagen ist, d.h. wenn zum Anschlagen eine Weblade 8 mit einer Anschlagstellung benutzt wird, bevor die Weblade 8 die Anschlagstellung erreicht hat.In an advantageous embodiment, the method according to embodiment also includes the control of the additional blowing nozzle 6. The additional blowing nozzle 6 is switched on after the separation of a registered and damaged weft thread 2 'and in particular during or after the insertion of the associated weft end 2'a. The switching off of the additional tuyere 6 is preferably carried out before the weft end 2'a, together with a subsequently inserted weft thread 2, is completely struck, i. if a batten 8 is used with a stop position for striking before the sley 8 has reached the stop position.

Die obige Aufzählung von Ausführungsvarianten der erfindungsgemässen Webmaschine und der Vorrichtung und des Verfahrens zum Einlegen eines oder mehrerer Schussfadenenden und zur Bildung einer Warenkante gemäss der vorliegenden Erfindung ist in keiner Weise abschliessend. Durch entsprechende Modifikation des in den Figuren gezeigten Ausführungsbeispiels lassen sich weitere Ausführungsvarianten ableiten, die alle die Vorteile der erfindungsgemässen Webmaschine und der Vorrichtung und des Verfahrens gemäss der Erfindung aufweisen, und die insbesondere den Vorteil haben, dass die Schussfadenenden mit optimaler Strahlrichtung gegen die Webfachspitze geblasen und dort geglättet und festgehalten werden können.The above list of variants of the weaving machine according to the invention and the device and the method for inserting one or more weft ends and for forming a fabric edge according to the present invention is in no way conclusive. By corresponding modification of the embodiment shown in the figures, further embodiments can be derived, all of which have the advantages of the weaving machine according to the invention and the device and the method according to the invention, and which in particular have the advantage that the weft thread ends blow with optimal beam direction against the shed tip and be smoothed and held there.

Claims (11)

  1. Weaving machine having an apparatus for tucking in one or more weft thread ends (2'a) and for forming a cloth edge (10), said apparatus including a mechanical, pneumatic or pneumo-mechanical selvedge tucker (4, 4.1 - 4.4), and a shed forming apparatus for forming a weaving shed (14) with a shed apex (14a), characterized in that the apparatus for tucking in one or more weft thread ends includes at least one additional blowing nozzle (6, 6", 6.1- 6.4) which is arranged within the cloth width (12), in particular within the width of the cloth edge (10), and the jet direction (6a) of which is oriented towards the shed apex (14a) in order to be able to blow the weft thread ends (2'a) into the shed apex (14a).
  2. Weaving machine in accordance with claim 1, with the additional blowing nozzle (6, 6", 6.1 - 6.4) including a nozzle opening which is arranged within the shed (14).
  3. Weaving machine in accordance with one of the claims 1 or 2, with the weaving machine (1) including a weft insertion direction (2b) and with the jet direction (6a) of the additional blowing nozzle (6, 6", 6.1 - 6.4) extending substantially perpendicularly to the weft insertion direction (2b), and/or with the weaving machine including relay nozzles (5.1 -5.n) and the additional blowing nozzle (6, 6", 6.1 - 6.4) being arranged in a row with the relay nozzles (5.1 -5.n).
  4. Weaving machine in accordance with any one of the claims 1 to 3, with the jet direction (6a) of the additional blowing nozzle (6, 6", 6.1 - 6.4) being settable, and/or with the additional blowing nozzle (6, 6", 6.1 - 6.4) being adjustably arranged along the weft insertion direction (2b) and/or in height and/or in the warp direction.
  5. Weaving machine in accordance with any one of the claims 1 to 4, with the weaving machine (1) including a sley (8) with a beat up position and one or more severing devices (7, 7.1 - 7.4) for parting inserted weft threads (2'), and with the weaving machine (1) and/or the apparatus for tucking in one or more weft thread ends (2'a) including a control system in order to switch on the additional blowing nozzle (6, 6", 6.1 - 6.4) after the parting of the inserted weft thread (2'), in particular during or after the tucking in of the weft thread ends (2'a) and/or in order to switch off the additional blowing nozzle (6, 6", 6.1 - 6.4), in particular before the sley (8) reaches the beat up position.
  6. Apparatus for tucking in one or more weft thread ends (2'a) and for forming a cloth edge (10) in a weaving machine having a shed (14) and a shed apex (14a), said apparatus including a mechanical, pneumatic or pneumo-mechanical selvedge tucker (4, 4.1 - 4.4), characterized in that the apparatus for tucking in one or more weft thread ends (2'a) includes at least one additional blowing nozzle (6, 6", 6.1 - 6.4) which is designed such that the jet direction (6a) of the additional blowing nozzle (6, 6", 6.1 - 6.4) can be oriented in the direction towards the shed apex (14a) and the additional blowing nozzle (6, 6", 6.1 - 6.4) can be used within the cloth width (12), in particular within the width of the cloth edge (10).
  7. Apparatus in accordance with claim 6, with the additional blowing nozzle (6, 6", 6.1 - 6.4) being designed in such a manner that a nozzle opening of the latter can be used within the shed (14), in particular in such a manner that a nozzle opening of same can be used within the shed (14) without causing weaving errors in a cloth (16) to be formed.
  8. Apparatus in accordance with claim 6 or claim 7, with the jet direction (6a) of the additional blowing nozzle (6, 6", 6.1- 6.4) being settable, and/or with the additional blowing nozzle (6, 6", 6.1 - 6.4) being elongate and having a mounting such that the additional blowing nozzle (6, 6", 6.1 - 6.4) is adjustable in the direction of the lateral extent and/or in a direction perpendicular to the lateral extent and to the jet direction (6a).
  9. Method for tucking in one or more weft thread ends (2'a) and for forming a cloth edge (10) in a weaving machine (1), with a shed (14) with a shed apex (14a) being formed on the weaving machine (1), and with the weft thread ends (2'a) being tucked into the shed (14) by means of a mechanical, pneumatic or pneumo-mechanical selvedge tucker (4, 4.1 - 4.4), characterized in that the weft thread ends (2'a) are blown into the shed apex by means of at least one additional blowing nozzle (6, 6", 6.1 - 6.4), which is arranged within the cloth width (12), in particular within the width of the cloth edge (10), and the jet direction (6a) of which is oriented towards the shed apex (14a).
  10. Method in accordance with claim 9, with the additional blowing nozzle (6, 6", 6.1 - 6.4) including a nozzle opening which is arranged within the shed (14), in particular in such a manner that no cloth faults are caused by the additional blowing nozzle (6, 6", 6.1 - 6.4).
  11. Method in accordance with claim 9 or claim 10, with weft threads (2, 2') being inserted, beaten up and severed and with the additional blowing nozzle (6, 6", 6.1 - 6.4) being switched on after the parting of the inserted and beaten up weft threads (2'), in particular during or after the tucking in of the weft thread ends (2'a), and with the additional blowing nozzle (6, 6", 6.1 - 6.4) being switched off before or at the point in time at which the beating up of the weft threads (2) which are subsequently inserted has been completed.
EP04405510A 2003-09-02 2004-08-16 Weaving loom with a tuck-in device Expired - Fee Related EP1512782B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04405510A EP1512782B1 (en) 2003-09-02 2004-08-16 Weaving loom with a tuck-in device

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Application Number Priority Date Filing Date Title
EP03405634 2003-09-02
EP03405634 2003-09-02
EP04405510A EP1512782B1 (en) 2003-09-02 2004-08-16 Weaving loom with a tuck-in device

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EP1512782A2 EP1512782A2 (en) 2005-03-09
EP1512782A3 EP1512782A3 (en) 2005-12-28
EP1512782B1 true EP1512782B1 (en) 2007-04-25

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Publication number Priority date Publication date Assignee Title
BE1017684A3 (en) * 2007-07-12 2009-03-03 Picanol Nv METHOD FOR INSERTING AN END OF A WELDING THREAD INTO A SIDE OF A TISSUE AND A PNEUMATIC EDGE INSERT.
JP2011122263A (en) * 2009-12-10 2011-06-23 Tsudakoma Corp Tuck-in selvage-forming apparatus in loom for weaving woven fabric for rubber reinforcement
CN103422234A (en) * 2013-08-12 2013-12-04 青岛星泽机电科技有限公司 Air jetting edge smoothing method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE725262C (en) * 1939-09-02 1942-09-18 Sulzer Ag Device for producing firm edges in fabrics
CH472519A (en) * 1966-12-29 1969-05-15 Sulzer Ag Method for operating a loom and machine for carrying out the method
DE3367942D1 (en) * 1983-09-01 1987-01-15 Rueti Ag Maschf Device for tucking-in the weft ends in a loom
US4715410A (en) * 1986-09-16 1987-12-29 Sulzer Brothers Limited Weaving loom
US4957144A (en) * 1987-12-28 1990-09-18 Nissan Motor Co., Ltd. Tack-in system of shuttleless loom
JP3348056B2 (en) * 1999-10-01 2002-11-20 津田駒工業株式会社 Tuck-in device in shuttleless loom
JP4132793B2 (en) * 2001-11-22 2008-08-13 津田駒工業株式会社 Tack-in ear formation method for woven fabric

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EP1512782A2 (en) 2005-03-09

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