EP1264921A2 - Device for holding the weft yarn ends in an air jet loom - Google Patents

Device for holding the weft yarn ends in an air jet loom Download PDF

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Publication number
EP1264921A2
EP1264921A2 EP02009621A EP02009621A EP1264921A2 EP 1264921 A2 EP1264921 A2 EP 1264921A2 EP 02009621 A EP02009621 A EP 02009621A EP 02009621 A EP02009621 A EP 02009621A EP 1264921 A2 EP1264921 A2 EP 1264921A2
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EP
European Patent Office
Prior art keywords
weft
holding device
flow channel
weft thread
air jet
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
EP02009621A
Other languages
German (de)
French (fr)
Other versions
EP1264921A3 (en
EP1264921B1 (en
Inventor
Andreas Weixler
Bernd Vögeli
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.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
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 Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP1264921A2 publication Critical patent/EP1264921A2/en
Publication of EP1264921A3 publication Critical patent/EP1264921A3/en
Application granted granted Critical
Publication of EP1264921B1 publication Critical patent/EP1264921B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—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
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/308—Stretching or holding the weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means

Definitions

  • the invention relates to a holding device for the ends of weft threads an air jet loom according to the preamble of claim 1.
  • the disadvantage of the known arrangement is that especially for the suction device Vacuum unit, a so-called ring compressor, must be provided, which supplies the suction nozzle with negative pressure.
  • the ring compressor is relatively large and takes up a relatively large amount of space on the weaving machine. Further the ring compressor represents a not inconsiderable cost factor.
  • the object of the invention is therefore to provide a holding device for the Ends of the weft threads emerging from a shed to create that on an expensive suction device can be dispensed with.
  • the holding device consists of a stationary Base body consists of a flow channel to which compressed air can be applied has, in which the emerging ends of the shed the Weft threads are inserted after and temporarily held, and the Base body is arranged on the extract side of the shed that the Flow channel runs transversely to the stop edge of the fabric.
  • the holding device has the advantage that only the compressed air already present on the machine is required for its operation.
  • a ring compressor as well as a suction nozzle in the area of the weft stretching device and various hoses are omitted, which saves costs and space.
  • the holding device improves the running properties of the weaving machine, since the formation of undesired loops and wefts on the fabric edge is avoided by securely holding the weft ends.
  • Figure 1 shows the view of the holding device from the perspective of the registered and weft emerging from the weft insertion channel of a reed.
  • the Holding device comprises an approximately cuboid base body 1 predetermined dimensions with a lower part 2 and an upper part 3. Both Parts are connected by a connecting means 4, e.g. a screw, held together.
  • the base body 1 is stationary, e.g. on the bearing plate (not shown) arranged for the fabric spreader of the weaving machine.
  • the base body 1 has an opening 5 through which the one to be entered Weft thread passes in the direction of arrow 12 and into the area of one Weft stretching device, not shown, arrives where it initially detects and is stretched.
  • a flow channel 7 is formed, which extends downward (Direction of arrow 14) and in the direction of the tissue withdrawal (direction of arrow 13).
  • the flow channel 7 is in the direction of arrow 14 with a stream of compressed air acted on, which detects the ends of a plurality of weft threads, in the direction of arrow 14 presses down and thus holds in the flow channel 7.
  • the compressed air required for this passes through an at the upper part 3 of the Base body 1 arranged compressed air connection 8 in a distribution channel 9, where it is distributed over several blowing nozzles 11 and from above into the flow channel is blown in.
  • the distribution channel 9 is at the end through a closure 10 locked.

Abstract

A weft holder device holds the free weft thread ends in an air jet loom, using pressurized air and without requiring a suction device. The body of the device has a tapering opening through which the end of the inserted weft thread extends. The opening tapers into a narrower slot in the beat-up and drawing-off direction. An air flow channel communicates downwardly from the slot. Nozzles blow pressurized air downwardly through the slot and into the channel, to pneumatically push the weft thread ends into the channel, so as to hold the weft thread ends from when they are beat-up and bound into the woven cloth and a catch selvage, until the catch selvage is trimmed from the cloth. The weft holder device may be stationarily mounted at a location between a weft detector and a weft tensioner that are connected to the reed so as to move therewith.

Description

Die Erfindung betrifft eine Halteeinrichtung für die Enden von Schussfäden bei einer Luftdüsenwebmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a holding device for the ends of weft threads an air jet loom according to the preamble of claim 1.

Bei Luftdüsenwebmaschinen ist es bekannt, im Bereich der Schussfadenstreckeinrichtung eine Schussfadenhalteeinrichtung in Form einer Saugeinrichtung anzuordnen. Nach dem Schusseintrag und dem Anschlagen der Schussfäden an die Anschlagkante des Gewebes werden die Schussfadenenden von der Saugeinrichtung erfasst und solange gehalten, bis die Schussfäden fest in dem Gewebe und in wenigstens einer zu bildenden Fangleiste eingebunden sind.In air jet looms, it is known in the field of Weft stretching device a weft holding device in the form of a Arrange suction device. After the shot entry and striking the Weft threads on the stop edge of the fabric become the weft ends captured by the suction device and held until the weft threads firmly in the fabric and are integrated in at least one catch strip to be formed.

Nachteil der bekannten Anordnung ist, dass speziell für die Saugeinrichtung eine Unterdruckeinheit, ein sogenannter Ringverdichter, vorgesehen werden muss, welche die Saugdüse mit Unterdruck versorgt. Der Ringverdichter ist relativ groß und beansprucht an der Webmaschine einen relativ großen Bauraum. Ferner stellt der Ringverdichter einen nicht unerheblicher Kostenfaktor dar.The disadvantage of the known arrangement is that especially for the suction device Vacuum unit, a so-called ring compressor, must be provided, which supplies the suction nozzle with negative pressure. The ring compressor is relatively large and takes up a relatively large amount of space on the weaving machine. Further the ring compressor represents a not inconsiderable cost factor.

Die Aufgabe der Erfindung liegt daher darin, eine Halteeinrichtung für die auszugsseitg eines Webfaches entstehenden Enden der Schussfäden dahingehend zu schaffen, dass auf eine kostenaufwendige Saugeinrichtung verzichtet werden kann.The object of the invention is therefore to provide a holding device for the Ends of the weft threads emerging from a shed to create that on an expensive suction device can be dispensed with.

Die Aufgabe wird erfindungsgemäß durch die Merkmale der Ansprüche 1 und 6 gelöst.The object is achieved by the features of claims 1 and 6 solved.

Erfindungswesentlich ist danach, dass die Halteeinrichtung aus einem stationären Grundkörper besteht, der einen mit Druckluft beaufschlagbaren Strömungskanal aufweist, in welchem die auszugsseitig des Webfaches entstehenden Enden der Schussfäden nach eingebracht und temporär gehalten werden, und wobei der Grundkörper derart auszugsseitig des Webfaches angeordnet ist, dass der Strömungskanal quer zur Anschlagkante des Gewebes verläuft.It is essential to the invention that the holding device consists of a stationary Base body consists of a flow channel to which compressed air can be applied has, in which the emerging ends of the shed the Weft threads are inserted after and temporarily held, and the Base body is arranged on the extract side of the shed that the Flow channel runs transversely to the stop edge of the fabric.

Die erfindungsgemäße Halteeinrichtung bietet den Vorteil, dass für ihren Betrieb ausschließlich die an der Maschine ohnehin vorhandene Druckluft benötigt wird. Ein Ringverdichter sowie eine Saugdüse im Bereich der Schussfadenstreckeinrichtung und diverse Schläuche entfallen, wodurch Kosten und Platz gespart wird.
Zusätzlich verbessert die Halteeinrichtung die Laufeigenschaften der Webmaschine, da durch das sichere Halten der Schussfadenenden die Bildung von unerwünschten Schlingen und Einschlägen an der Gewebekante vermieden wird.The holding device according to the invention has the advantage that only the compressed air already present on the machine is required for its operation. A ring compressor as well as a suction nozzle in the area of the weft stretching device and various hoses are omitted, which saves costs and space.
In addition, the holding device improves the running properties of the weaving machine, since the formation of undesired loops and wefts on the fabric edge is avoided by securely holding the weft ends.

Ausgestaltende Merkmale der Erfindung sind in den abhängigen Ansprüche offenbart.Design features of the invention are in the dependent claims disclosed.

Die Erfindung wird nachstehend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels erläutert.The invention is illustrated below with reference to one in the drawings Exemplary embodiment explained.

Es zeigen:Show it:

Figur 1Figure 1
eine Seitenansicht der Halteeinrichtung unda side view of the holding device and
Figur 2Figure 2
einen Schnitt durch die Halteeinrichtung entlang der Linie A-A in Figur 1.a section through the holding device along the line A-A in Figure 1

Figur 1 zeigt die Ansicht der Halteeinrichtung aus Sicht des eingetragenen und aus dem Schusseintragskanal eines Webblattes austretenden Schussfadens. Die Halteeinrichtung umfasst einen etwa quaderförmigen Grundkörper 1 vorbestimmter Abmaße mit einem unteren Teil 2 und einem oberen Teil 3. Beide Teile werden von einem Verbindungsmittel 4, z.B. einer Schraube, zusammengehalten. Der Grundkörper 1 ist stationär, z.B. an der Lagerplatte (nicht dargestellt) für den Gewebebreithalter der Webmaschine angeordnet.Figure 1 shows the view of the holding device from the perspective of the registered and weft emerging from the weft insertion channel of a reed. The Holding device comprises an approximately cuboid base body 1 predetermined dimensions with a lower part 2 and an upper part 3. Both Parts are connected by a connecting means 4, e.g. a screw, held together. The base body 1 is stationary, e.g. on the bearing plate (not shown) arranged for the fabric spreader of the weaving machine.

Der Grundkörper 1 weist eine Öffnung 5 auf, durch die der einzutragende Schussfaden in Richtung des Pfeiles 12 hindurchtritt und in den Bereich einer nicht dargestellen Schussfadenstreckeinrichtung gelangt, wo er zunächst erfasst und gestreckt wird. The base body 1 has an opening 5 through which the one to be entered Weft thread passes in the direction of arrow 12 and into the area of one Weft stretching device, not shown, arrives where it initially detects and is stretched.

Während der Schussfaden gestreckt gehalten wird, wird er durch eine Bewegung des Webblattes in Richtung des Pfeiles 13 an der Anschlagkante des Gewebes angeschlagen. Dabei gelangt der Schussfadne in einen Schlitz 6 der Halteeinrichtung, der sich an die Öffnung 5 anschließt.While the weft is kept stretched, it is moved by a movement the reed in the direction of arrow 13 at the stop edge of the fabric struck. The weft thread comes into a slot 6 of the Holding device that connects to the opening 5.

Wie am Besten in Figur 2 zu erkennen, ist im unteren Teil 2 des Grundkörpers 1, unterhalb des Schlitzes 6, ein Strömungskanal 7 ausgebildet, der sich nach unten (Pfeilrichtung 14) und in Richtung des Gewebeabzuges (Pfeilrichtung 13) öffnet. Der Strömungskanal 7 wird in Pfeilrichtung 14 mit einem Druckluftstrom beaufschlagt, der die Enden mehrerer Schussfäden erfasst, in Pfeilrichtung 14 nach unten drückt und so im Strömungskanal 7 hält.As can best be seen in FIG. 2, in the lower part 2 of the base body 1, below the slot 6, a flow channel 7 is formed, which extends downward (Direction of arrow 14) and in the direction of the tissue withdrawal (direction of arrow 13). The flow channel 7 is in the direction of arrow 14 with a stream of compressed air acted on, which detects the ends of a plurality of weft threads, in the direction of arrow 14 presses down and thus holds in the flow channel 7.

Die hierfür benötigte Druckluft gelangt über einen am oberen Teil 3 des Grundkörpers 1 angeordneten Druckluftanschluss 8 in einen Verteilerkanal 9, wo sie auf mehrere Blasdüsen 11 verteilt und von oben in den Strömungskanal eingeblasen wird. Der Verteilerkanal 9 ist am Ende durch einen Verschluss 10 verschlossen.The compressed air required for this passes through an at the upper part 3 of the Base body 1 arranged compressed air connection 8 in a distribution channel 9, where it is distributed over several blowing nozzles 11 and from above into the flow channel is blown in. The distribution channel 9 is at the end through a closure 10 locked.

Im Strömungskanal 7 werden also die Enden der an der Anschlagkante des Gewebes angeschlagenen Schussfäden temporär gehalten, bis sie, bei vorhandener Fangleiste, zusammen mit der Fangleiste vom Gewebe abgetrennt und entsorgt werden. In the flow channel 7, the ends of the at the stop edge of the Tissue chipped threads temporarily held until, at existing safety edge, separated from the fabric together with the safety edge and be disposed of.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Grundkörperbody
22
unteres Teillower part
33
oberes Teilupper part
44
Verbindungsmittelconnecting means
55
Öffnungopening
66
Schlitzslot
77
Strömungskanalflow channel
88th
DruckluftanschlussCompressed air connection
99
Verteilerkanaldistribution channel
1010
Verschlussshutter
1111
Blasdüsennozzles
1212
Pfeilrichtung (Schusseintrag)Arrow direction (weft entry)
1313
Pfeilrichtung (Gewebeabzug)Arrow direction (fabric deduction)
1414
Pfeilrichtung (Luftströmung)Arrow direction (air flow)

Claims (7)

Halteeinrichtung für die Enden von Schussfäden bei einer Luftdüsenwebmaschine, gekennzeichnet durch einen Grundkörper (1), der einen mit Druckluft beaufschlagbaren Strömungskanal (7) besitzt, in welchem die auszugsseitigen Enden der in ein Webfach eingetragenen Schussfäden eingebracht und temporär gehalten werden.Holding device for the ends of weft threads in an air jet weaving machine, characterized by a base body (1) which has a flow channel (7) which can be pressurized with compressed air and in which the ends of the weft threads inserted in a shed are inserted and temporarily held. Halteeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Grundkörper (1) eine Öffnung (5) aufweist, durch welche die Schussfäden beim Schussfadeneintrag in das Webfach hindurchgeführt sind, wobei die Öffnung (5) sich in Richtung des Gewebeabzuges (13) zu einem Schlitz (6) vorbestimmter Abmaße verengt.Holding device according to claim 1, characterized in that the base body (1) has an opening (5) through which the weft threads are guided when the weft thread is inserted into the shed, the opening (5) extending towards a slit in the direction of the fabric take-off (13) (6) predetermined dimensions narrowed. Halteeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Grundkörper (1) aus vorzugsweise zwei miteinander lösbar verbundenen Teilen (2, 3) besteht, wobei in dem einen Teil der Strömungskanal (7) und in dem anderen Teil Mittel zur Druckbeaufschlagung der Schussfadenenden angeordnet sind.Holding device according to claim 1, characterized in that the base body (1) preferably consists of two parts (2, 3) which are detachably connected to one another, in one part of which the flow channel (7) and in the other part are arranged means for pressurizing the weft thread ends , Halteeinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Mittel aus einem Druckluftanschluss (8), aus einem Verteilerkanal (9) und aus mehreren, in den Strömungskanal (7) hineingerichteten Blasdüsen (11) bestehen.Holding device according to claim 3, characterized in that the means consist of a compressed air connection (8), a distribution channel (9) and a plurality of blowing nozzles (11) directed into the flow channel (7). Halteeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Strömungskanal (7) in Richtung der Druckluftströmung (14) und in Richtung des Gewebeabzuges (13) geöffnet ist.Holding device according to claim 1, characterized in that the flow channel (7) is open in the direction of the compressed air flow (14) and in the direction of the fabric take-off (13). Luftdüsenwebmaschine gekennzeichnet durch eine Halteeinrichtung nach den Merkmalen der Ansprüche 1 bis 5.Air jet loom characterized by a holding device according to the features of claims 1 to 5. Luftdüsenwebmaschine nach Anspruch 6, dadurch gekennzeichnet, dass die Halteeinrichtung an geeigneter Stelle der Webmaschine zwischen einer mit dem Webblatt verbundenen Schussfadendetektiereinrichtung und einer mit dem Webblatt verbundenen Schussfadenstreckeinrichtung stationär angeordnet ist.Air jet weaving machine according to claim 6, characterized in that the holding device is arranged in a stationary position at a suitable point on the weaving machine between a weft thread detection device connected to the reed and a weft stretching device connected to the reed.
EP02009621A 2001-05-10 2002-04-27 Device for holding the weft yarn ends in an air jet loom Expired - Lifetime EP1264921B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20107885U 2001-05-10
DE20107885U DE20107885U1 (en) 2001-05-10 2001-05-10 Holding device for the ends of weft threads in an air jet loom

Publications (3)

Publication Number Publication Date
EP1264921A2 true EP1264921A2 (en) 2002-12-11
EP1264921A3 EP1264921A3 (en) 2003-09-17
EP1264921B1 EP1264921B1 (en) 2006-06-28

Family

ID=7956713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02009621A Expired - Lifetime EP1264921B1 (en) 2001-05-10 2002-04-27 Device for holding the weft yarn ends in an air jet loom

Country Status (5)

Country Link
US (1) US6758246B2 (en)
EP (1) EP1264921B1 (en)
JP (1) JP2002371448A (en)
AT (1) ATE331828T1 (en)
DE (2) DE20107885U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1016236A6 (en) * 2004-03-05 2006-05-02 Picanol Nv EDGE INSTALLATION DEVICE FOR A WEAVING MACHINE.
EP1927691B1 (en) * 2006-11-29 2010-02-17 ITEMA (Switzerland) Ltd. Weft holding device and method for a rapier weaving machine
DE102015217356B3 (en) * 2015-09-10 2016-10-20 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Weaving machine with a device and method for holding, feeding and entering weft threads in a shed

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493847A1 (en) * 1991-01-04 1992-07-08 Picanol N.V. Device for the stretching of a weft thread in weaving machines
US5224521A (en) * 1991-04-30 1993-07-06 Sulzer Brothers Limited Weft catcher with gripping device
DE4311918A1 (en) * 1993-04-10 1994-10-13 Kloecker Entwicklungs Gmbh A device downstream of the reed, for braking a weft thread inserted by means of an air stream
US6014990A (en) * 1995-10-02 2000-01-18 Picanol N.V. Filling yarn stretching device for a loom
US6220308B1 (en) * 1997-07-01 2001-04-24 Textilma, Ag Device for stretching and tensioning a weft yarn

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342135A1 (en) * 1988-05-10 1989-11-15 S.A. Saurer Diederichs Weft suction and retaining device for weaving machines using jet weft inserting
DE4213754C1 (en) * 1992-04-25 1993-12-02 Dornier Gmbh Lindauer Device for the pneumatic guiding of turbulent weft ends of an auxiliary fabric strip in air jet weaving machines
DE19545839C1 (en) * 1995-12-08 1996-08-29 Dornier Gmbh Lindauer Air jet loom with weft thread auxiliary suction nozzle saves material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493847A1 (en) * 1991-01-04 1992-07-08 Picanol N.V. Device for the stretching of a weft thread in weaving machines
US5224521A (en) * 1991-04-30 1993-07-06 Sulzer Brothers Limited Weft catcher with gripping device
DE4311918A1 (en) * 1993-04-10 1994-10-13 Kloecker Entwicklungs Gmbh A device downstream of the reed, for braking a weft thread inserted by means of an air stream
US6014990A (en) * 1995-10-02 2000-01-18 Picanol N.V. Filling yarn stretching device for a loom
US6220308B1 (en) * 1997-07-01 2001-04-24 Textilma, Ag Device for stretching and tensioning a weft yarn

Also Published As

Publication number Publication date
JP2002371448A (en) 2002-12-26
ATE331828T1 (en) 2006-07-15
US6758246B2 (en) 2004-07-06
EP1264921A3 (en) 2003-09-17
EP1264921B1 (en) 2006-06-28
DE50207359D1 (en) 2006-08-10
DE20107885U1 (en) 2001-10-11
US20020166599A1 (en) 2002-11-14

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