EP1883723A1 - Method for operating a projectile loom - Google Patents

Method for operating a projectile loom

Info

Publication number
EP1883723A1
EP1883723A1 EP06742352A EP06742352A EP1883723A1 EP 1883723 A1 EP1883723 A1 EP 1883723A1 EP 06742352 A EP06742352 A EP 06742352A EP 06742352 A EP06742352 A EP 06742352A EP 1883723 A1 EP1883723 A1 EP 1883723A1
Authority
EP
European Patent Office
Prior art keywords
speed
projectile
weft
weaving machine
shed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06742352A
Other languages
German (de)
French (fr)
Inventor
Valentin Krumm
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 EP1883723A1 publication Critical patent/EP1883723A1/en
Withdrawn legal-status Critical Current

Links

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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/002—Avoiding starting marks
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/14—Driving, starting, or stopping arrangements; Automatic stop motions for reducing speed temporarily

Definitions

  • the invention relates to a method for operating a projectile weaving machine, wherein within a weaving cycle at least one weft thread is inserted into a shed formed from warp shed, the weft yarn is held clamped according to its entry and exit side of the shed and cut to length and the weft thread is held in clamped state struck against the stop edge of a fabric to be produced and tied off by the warp threads.
  • the object of the invention is to avoid due to a starting process of a projectile weaving machine in tissues, especially those with basic binding types, fabric defects as the cause of a starting process of the projectile weaving machine.
  • the object is achieved according to the invention by a method according to which the projectile weaving machine is operated at low speed after each starting operation during the first weaving cycle, after which the weft yarn is fed at a speed suitable for the given operating speed during slow running of the projectile weaving machine and after which the projectile weaving machine immediately after the end of the first web cycle is operated at the predetermined operating speed.
  • Web cycle is understood here to be the time duration between two successive stops of the reed on the fabric edge of the fabric to be produced.
  • the weft insertion takes place at a speed of the main drive shaft of the projectile weaving machine of less than 200 min -1 , preferably at a speed between 40 min -1 and 100 min -1 .
  • the projectile weaving machine is operated in such a way that the slow-speed Speed in the specified operating speed immediately is transferred to the stop edge of the fabric after striking the registered weft thread.
  • the fabric defects which usually occur during the starting process of the projectile weaving machine are in the form of a contact point, such as e.g. so-called staircase formation, which in particular stand out after the equipment of the fabric, avoided.
  • the attached drawing schematically shows the means required to produce a fabric on a projectile weaving machine.
  • the warp threads 1, 2 are pulled by lamellae 3 of a reed 4 and thereby form a shed 5 from.
  • a projectile 6 enters a weft thread 7 into the open shed 5.
  • the projectile 6 is arranged by a variety of on the sley 8
  • Batten of the weaving machine is included. After the striking of the weft thread 7, the projectile weaving machine automatically starts in a predetermined operating speed, which is usually up to a Stop the weaving process that is becoming necessary, eg because of a weft breakage.

Landscapes

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

Abstract

The invention relates to a projectile loom. The aim of the invention is to avoid fabric defects in fabrics, especially fabrics with standard weaves, that are caused by the starting process of a projectile loom. For this purpose, the projectile loom, after every starting process, is operated in low speed during the first weaving cycle. During low-speed operation, the weft thread is inserted at a speed adequate to the defined operating speed. The projectile loom is operated with the defined operational speed directly after termination of the first weaving cycle.

Description

Verfahren zum Betreiben einer Projektilwebmaschine Method for operating a projectile weaving machine
Die Erfindung betrifft ein Verfahren zum Betreiben einer Projektilwebmaschine, wonach innerhalb eines Webzyklus wenigstens ein Schussfaden in ein aus Kettfäden gebildetes Webfach eingetragen wird, der Schussfaden nach seinem Eintrag ein- und ausgangsseitig des Webfaches geklemmt gehalten und abgelängt wird und der Schussfaden nachfolgend in geklemmt gehaltenem Zustand an die Anschlagkante eines herzustellenden Gewebes angeschlagen und von den Kettfäden abgebunden wird.The invention relates to a method for operating a projectile weaving machine, wherein within a weaving cycle at least one weft thread is inserted into a shed formed from warp shed, the weft yarn is held clamped according to its entry and exit side of the shed and cut to length and the weft thread is held in clamped state struck against the stop edge of a fabric to be produced and tied off by the warp threads.
Beim Betreiben von Projektilwebmaschinen zum Herstellen von Geweben, insbesondere Gewebe mit Grundbindungsarten wie z.B. Gewebe in Köperbindung, Gewebe in Leinwandbindung und Gewebe in Atlasbindung treten häufig Gewebefehler in Folge eines Startvorganges der Webmaschine auf. Die Ursache derartiger Startvorgänge sind in den aller meisten Fällen Schuss- oder Kettfadenbrüche oder webtechnisch bedingte Maschinenstillstände.In the operation of projectile weaving machines for producing fabrics, in particular fabrics with basic weave types such as e.g. Twill weave, plain weave, and satin weave fabric often experience fabric failure as a result of a weaving machine starting process. The cause of such starting operations are in the most cases, weft or Kettfadenbrüche or webtechnisch related machine downtime.
Aufgabe der Erfindung ist es, die aufgrund eines Startvorganges einer Projektilwebmaschine in Geweben, insbesondere solchen mit Grundbindungsarten, Gewebefehler als Ursache eines Startvorganges der Projektilwebmaschine zu vermeiden.The object of the invention is to avoid due to a starting process of a projectile weaving machine in tissues, especially those with basic binding types, fabric defects as the cause of a starting process of the projectile weaving machine.
Die Aufgabe wird erfindungsgemäß durch ein Verfahren gelöst, wonach die Projektilwebmaschine nach jedem Startvorgang während des ersten Webzyklus im Langsamlauf betrieben wird, wonach während des Langsamlaufs der Projektilwebmaschine der Schussfaden mit einer zur vorgegebenen Betriebsdrehzahl adäquaten Geschwindigkeit eingetragen wird und wonach die Projektilwebmaschine unmittelbar nach dem Ende des ersten Webzyklus mit der vorgegebenen Betriebsdrehzahl betrieben wird.The object is achieved according to the invention by a method according to which the projectile weaving machine is operated at low speed after each starting operation during the first weaving cycle, after which the weft yarn is fed at a speed suitable for the given operating speed during slow running of the projectile weaving machine and after which the projectile weaving machine immediately after the end of the first web cycle is operated at the predetermined operating speed.
Unter Webzyklus wird hier die Zeitdauer zwischen zwei aufeinander folgenden Anschlägen des Webblattes an die Gewebekante des herzustellenden Gewebes verstanden.Web cycle is understood here to be the time duration between two successive stops of the reed on the fabric edge of the fabric to be produced.
Der Schussfadeneintrag erfolgt dabei bei einer Drehzahl der Hauptantriebswelle der Projektilwebmaschine von weniger als 200 min"1, vorzugsweise bei einer Drehzahl zwischen 40 min"1 und 100 min"1. In weiterer Ausgestaltung der Erfindung wird die Projektilwebmaschine derart betrieben, dass von der Langsamlauf-Drehzahl in die vorgegebene Betriebs-Drehzahl unmittelbar nach dem Anschlagen des eingetragenen Schussfadens an die Anschlagkante des Gewebes übergegangen wird.The weft insertion takes place at a speed of the main drive shaft of the projectile weaving machine of less than 200 min -1 , preferably at a speed between 40 min -1 and 100 min -1 . In a further embodiment of the invention, the projectile weaving machine is operated in such a way that the slow-speed Speed in the specified operating speed immediately is transferred to the stop edge of the fabric after striking the registered weft thread.
Ferner ist erfindungsgemäß vorgesehen, dass die jeden Startvorgang der Projektilwebmaschine folgenden Arbeitsschritte, also Langsamlaufen während des ersten Webzyklus nach dem Startvorgang, Eintragen des Schussfadens während desFurthermore, according to the invention, it is provided that the work steps following each starting operation of the projectile weaving machine, ie slow running during the first weaving cycle after the starting operation, entry of the weft thread during the
Langsamlaufs der Projektilwebmaschine und Betreiben der Projektilwebmaschine in einer vorgegebenen Betriebsdrehzahl, automatisch vollzogen werden.Slow running of the projectile weaving machine and operating the projectile weaving machine in a predetermined operating speed, be performed automatically.
Mit dem erfindungsgemäßen Verfahren werden die üblicherweise beim Startvorgang der Projektilwebmaschine auftretenden Gewebefehler in Art einer Anlaufstelle, wie z.B. sogenannte Treppenbildung, die insbesondere nach dem Ausrüsten des Gewebes optisch hervortreten, vermieden.With the method according to the invention, the fabric defects which usually occur during the starting process of the projectile weaving machine are in the form of a contact point, such as e.g. so-called staircase formation, which in particular stand out after the equipment of the fabric, avoided.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel näher erläutert.The invention will be explained in more detail using an exemplary embodiment.
In der anliegenden Zeichnung sind schematisch die zur Herstellung eines Gewebes auf einer Projektilwebmaschine erforderlichen Mittel dargestellt.The attached drawing schematically shows the means required to produce a fabric on a projectile weaving machine.
Die Kettfäden 1, 2 sind durch Lamellen 3 eines Webblattes 4 gezogen und bilden dabei ein Webfach 5 aus.The warp threads 1, 2 are pulled by lamellae 3 of a reed 4 and thereby form a shed 5 from.
Ein Projektil 6 trägt in das geöffnete Webfach 5 einen Schussfaden 7 ein.A projectile 6 enters a weft thread 7 into the open shed 5.
Das Projektil 6 wird dabei von einer Vielzahl von auf der Weblade 8 angeordnetenThe projectile 6 is arranged by a variety of on the sley 8
Führungsmitteln 9 geführt, wobei während des Schussfadeneintrags sich das Webblatt 5 in seiner hinteren Endstellung befindet. Der in das Webfach 5 eingetragene Schussfaden 7 wird von einer ein- und ausgangsseitig des Webfaches 5 angeordneten Schussfadenklemme 10 gehalten, bevor dieser von einer ein- und ausgangsseitig des Webfaches 5 angeordneten, jedoch nicht dargestellten Schussfadenschere abgeschnitten wird.Guide means 9 out, wherein during the weft insertion, the reed 5 is in its rear end position. The registered in the shed 5 weft 7 is held by an input and output side of the shed 5 arranged weft thread clamp 10 before it is arranged by an input and output side of the shed 5, but not shown weft cutter is cut off.
Der so auf Eintragslänge gebrachte Schussfaden 7 wird im geklemmt gehaltenem Zustand an die Anschlagkante 11a des Gewebes 11 angeschlagen, und zwar gemäß der vorliegenden erfindungsgemäßen Lösung bei einem Langsamlauf derThe thus placed on entry length weft yarn 7 is struck in the clamped state held against the stop edge 11 a of the fabric 11, and indeed according to the present inventive solution at a slow speed of
Projektilwebmaschine während des ersten Webzyklus nach einem Startvorgang, in welchem Langsamlauf die Bewegung des Webblattes 4 bzw. die das Webblatt 4 tragendeProjectile weaving machine during the first weaving cycle after a starting process, in which slow motion the movement of the reed 4 or the reed 4 bearing
Weblade der Webmaschine einbezogen ist. Nach erfolgtem Anschlagen des Schussfadens 7 startet die Projektilwebmaschine automatisch in eine vorgegebenen Betriebsdrehzahl, die in der Regel bis zu einem notwendig werdenden Stop des Webprozesses, z.B. wegen eines Schussfadenbruches, aufrechterhalten wird.Batten of the weaving machine is included. After the striking of the weft thread 7, the projectile weaving machine automatically starts in a predetermined operating speed, which is usually up to a Stop the weaving process that is becoming necessary, eg because of a weft breakage.
Nach dem Beheben des beispielhaft genannten Schussfadenbruchs erfolgt vorzugsweise automatisch ein erneuter Startvorgang im Sinne der im Patentanspruch 1 beanspruchtenAfter the weft breakage, which is mentioned by way of example, is preferably carried out automatically, a renewed starting process within the meaning of the claims claimed in claim 1
Vorgehensweise. Method.

Claims

Patentansprüche claims
1. Verfahren zum Betreiben einer Projektilwebmaschine, wonach während eines Webzyklus wenigstens ein Schussfaden in ein aus Kettfäden gebildetes Webfach eingetragen wird, der eingetragene Schussfaden daraufhin ein- und ausgangsseitig des Webfaches geklemmt gehalten und abgelängt wird und der Schussfaden nachfolgend in geklemmt gehaltenem Zustand an die Anschlagkante eines herzustellenden Gewebes angeschlagen und von den Kettfäden abgebunden wird, dadurch gekennzeichnet, dass die Projektilwebmaschine nach einem Startvorgang während des ersten Webzyklus im Langsamlauf betrieben wird, dass während des Langsamlaufs der Schussfaden mit einer der vorgegebenen Betriebsdrehzahl adäquaten Geschwindigkeit eingetragen wird und dass die Projektilwebmaschine unmittelbar nach dem Ende des ersten Webzyklus mit der vorgegebenen Betriebsdrehzahl betrieben wird.1. A method for operating a projectile weaving machine, according to which during a weaving cycle at least one weft thread is inserted into a shed formed from warp shed, the registered weft yarn is then clamped input and output side of the shed and cut to length and the weft subsequently held in clamped state held on the stop edge struck a fabric to be produced and tied off from the warp threads, characterized in that the projectile weaving machine is operated after a starting operation during the first weaving cycle in slow speed, that is entered during the slow running of the weft with a predetermined operating speed adequate speed and that the projectile weaving machine immediately after the end of the first weaving cycle is operated at the predetermined operating speed.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass der Schussfadeneintrag bei einer Drehzahl der Hauptantriebswelle der Projektilwebmaschine von weniger als 200 min"1, vorzugsweise zwischen 40 und 100 min"1 erfolgt.2. The method according to claim 1, characterized in that the weft insertion at a speed of the main drive shaft of the projectile weaving machine of less than 200 min "1 , preferably between 40 and 100 min " 1 takes place.
3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass von der Langsamlauf- Drehzahl in die Betriebs-Drehzahl unmittelbar nach dem Anschlagen des eingetragenen Schussfadens übergegangen wird.3. The method according to claim 1, characterized in that is passed from the slow speed to the operating speed immediately after the striking of the registered weft thread.
4. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die jedem Startvorgang der Projektilwebmaschine folgenden Arbeitsschritte automatisch vollzogen werden. 4. The method according to claim 1, characterized in that the each starting operation of the projectile weaving following operations are performed automatically.
EP06742352A 2005-05-24 2006-05-17 Method for operating a projectile loom Withdrawn EP1883723A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005023929A DE102005023929B3 (en) 2005-05-24 2005-05-24 Projectile loom, with a projectile to carry a weft yarn length through the shed, is operated at a slow speed for the first weaving cycle on starting and then accelerated to the normal working speed level
PCT/DE2006/000844 WO2006125415A1 (en) 2005-05-24 2006-05-17 Method for operating a projectile loom

Publications (1)

Publication Number Publication Date
EP1883723A1 true EP1883723A1 (en) 2008-02-06

Family

ID=36910783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06742352A Withdrawn EP1883723A1 (en) 2005-05-24 2006-05-17 Method for operating a projectile loom

Country Status (7)

Country Link
US (1) US20090101227A1 (en)
EP (1) EP1883723A1 (en)
JP (1) JP2008542555A (en)
CN (1) CN101228304A (en)
BR (1) BRPI0611367A2 (en)
DE (1) DE102005023929B3 (en)
WO (1) WO2006125415A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102010021786A1 (en) 2010-05-27 2011-12-01 Schaeffler Technologies Gmbh & Co. Kg Thread drive for weaving machine, comprises two rotating bodies, whose rotational axes are aligned weft thread nearly parallel to each other and in conveying direction
IT201700066823A1 (en) * 2017-06-15 2018-12-15 Itema Spa PERFECTED SOCKET / RELEASE SYSTEM OF THE PLOT WIRE IN A TEXTILE FRAME

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Also Published As

Publication number Publication date
DE102005023929B3 (en) 2006-09-14
CN101228304A (en) 2008-07-23
WO2006125415A1 (en) 2006-11-30
BRPI0611367A2 (en) 2010-08-31
US20090101227A1 (en) 2009-04-23
JP2008542555A (en) 2008-11-27

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