EP0421923B1 - Procédé et dispositif pour rentrer un fil de chaîne dans les parties formant un tissu dans un métier à tisser - Google Patents

Procédé et dispositif pour rentrer un fil de chaîne dans les parties formant un tissu dans un métier à tisser Download PDF

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Publication number
EP0421923B1
EP0421923B1 EP90810672A EP90810672A EP0421923B1 EP 0421923 B1 EP0421923 B1 EP 0421923B1 EP 90810672 A EP90810672 A EP 90810672A EP 90810672 A EP90810672 A EP 90810672A EP 0421923 B1 EP0421923 B1 EP 0421923B1
Authority
EP
European Patent Office
Prior art keywords
draw
heddle
warp thread
blade
reserve
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 - Lifetime
Application number
EP90810672A
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German (de)
English (en)
Other versions
EP0421923A1 (fr
Inventor
Robert Bucher
Umberto Dünki
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.)
Itema Switzerland Ltd
Original Assignee
Sultex AG
Maschinenfabrik Rueti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sultex AG, Maschinenfabrik Rueti AG filed Critical Sultex AG
Publication of EP0421923A1 publication Critical patent/EP0421923A1/fr
Application granted granted Critical
Publication of EP0421923B1 publication Critical patent/EP0421923B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/14—Apparatus for threading warp stop-motion droppers, healds, or reeds

Definitions

  • the invention relates to a method and a device for pulling a warp thread into fabric-forming parts of a weaving machine, where an auxiliary warp thread is drawn in through a thread-guiding part by means of a pulling device.
  • a method of this type according to EP-A-0 259 915 is known, in which a pulling device moves into a working space between the warp threads and is moved towards the heald.
  • a shifting device for the warp threads must create the work area beforehand. It is not clear how the pulling device gets into an exact working position relative to the heald.
  • the device for pulling in the warp thread also includes a device for threading the reed and a device for selecting the heald into which the auxiliary warp thread is to be pulled.
  • the auxiliary warp thread can be drawn exactly into the heald. If the auxiliary warp thread is drawn in from the warp beam to the fabric edge and further up to the fabric, weaving can be continued without further interruptions. The ends of the previously extracted broken warp thread and the auxiliary warp thread lying on the fabric are either cut off a few weaving cycles after being drawn in or later, for example during the fabric inspection.
  • a slat 21 is in the contact position on the contact rail 23, since the warp thread 11 drawn into it is broken.
  • a narrow lane can be formed in the warp chain 10 by means of the lamella 21 and the contact rail 23, into which a sword 50 is inserted to widen the lane.
  • the sword 50 is controlled horizontally in the weft direction of the weaving machine to the height of the guard plate 21 by means of a travel drive, not shown.
  • the position of the guard plate 21 and thus the desired position for the sword 50 can, for example, with a special commercially available warp thread monitors can be determined by determining the resistance of a wire in the weft direction from one side of the warp thread monitor to the contact point of the monitor plate 21, from which its position can be determined in a simple manner if the resistance per unit length of the wire is known.
  • a discharge device 80 for example with a suction nozzle 81, which swivels in the same position as the sword 50 over the formed alley between the warp threads 12, 13e 81 in the direction of arrow 81 'to a cutting and Holding device 82, where the section of the broken warp thread 11 held by the suction nozzle 81 is deposited and severed in order to be connected to an auxiliary warp thread 1 in a subsequent operation.
  • the end of the broken warp thread 11 located there can also be grasped and pulled up by means of the suction nozzle 81.
  • the section of the broken warp thread 11 lying there can be gripped by the suction nozzle 81 ⁇ and pulled into position 11 ⁇ in FIG. 1 on the reed 4.
  • the broken warp thread 11 ⁇ can be in this uppermost Position can be easily detected by a suction nozzle 83, since it lies above the other warp threads 12, and pulled forward over the fabric 100 by means of the suction nozzle 83.
  • the parts of the broken weaving thread 11 are thus removed from the weaving area. It is expedient to steer the warp 10 into the shed closing position, all of the heddle eyes 32 being at the same height as shown in FIG. 1.
  • the sword 50 is shown in a working position with the healds 30, 31.
  • wings 50a, 50b extend from the sword 50, which become wider along the shaft 50c with increasing height.
  • the ends 500a, 500b of the wings 50a, 50b are directed toward each other inwards so that the individual warp threads 12, 13 are not deflected brusquely when the sword 50 is moved against the arrow II within the warp.
  • the wings 50a, 50b in the displacement direction of the sword 50, in front of its shaft 50c, there is a sensor 54 and a light source, which generate a signal when the sword is moved in the direction of arrow 50 ⁇ when the strand 31 into which the auxiliary warp thread 11 is inserted should be at the level of the connecting line V of the sensor 54 and the light source 55.
  • the device 5 for locating the heald 31 with the sword 50 is then only moved further by the distance between the connecting line V and the groove 52 in the shaft 50c, so that the device 5 comes to a standstill after the heald 31 has been retracted into the groove 52.
  • the pull-in position for the pull-in tubes 71 and 72 is thus also determined beforehand.
  • the control S of the device 101 according to FIG. 5 registers the movement of the arm 56, which controls the sword 50, and controls it the arms 715 and 725 of the pull-in tubes 71 and 72 so that they come into the threading position at the strand 31.
  • the auxiliary warp thread can then be threaded into the heddle eye 32 by pushing the device 7 for pulling in a warp thread into the opening 53 of the sword 50, the blowing opening 72a of the left pull-in tube 72 according to FIG. 2a one side of the heald eye 32 blows auxiliary warp thread 1 through the heald eye 32 into the suction opening 71c of the right-hand pull-in tube 71.
  • This process can also be seen in the plan in Fig. 4b.
  • FIG. 2b shows the right-hand draw-in tube 71 in a side view, the suction opening 71c, a slot 71b and the blowing opening 71a being visible.
  • An air flow L through the draw-in tube 71 creates a negative pressure at the suction opening 71c and leaves the draw-in tube through the blow opening 71a, the flow being deflected at right angles to the longitudinal extent of the draw-in tube 71.
  • the auxiliary warp thread 1 can be pulled out of the pull-in tube 71 again through the slot 71b when the pulling-in process has ended.
  • the suction of the auxiliary warp thread 1 into the suction opening 71c is supported in that the blowing opening 72a of the left-hand pull-in tube 72 lies opposite the suction opening 71c.
  • FIG. 3 shows the weaving area in the warp thread monitor 2 while the auxiliary warp thread 1 is being drawn in.
  • the sword 50 is immersed in a movement according to arrow 50 'in the warp 10 and has a widened alley, as can be seen in Fig. 3b.
  • Fig. 3a shows the moment of immersion of the sword 50 between the warp threads 12 and 13, which are adjacent to the broken warp thread 11.
  • the guard plate 21 is in its lowered position 21 'inclined, whereby the alley has formed between the adjacent warp threads for immersing the sword 50.
  • the slanted position of the lamella 21 can be achieved in that slots in the contact rail 23 are designed obliquely and the contact rail 23 and a support rail 22 are moved in the longitudinal direction against one another.
  • Such a warp thread monitor is shown, for example, in Swiss patent specification 169 657.
  • the lamella 21 is gripped by a holder 24 and pulled up for the subsequent pull-in operation.
  • a section of the broken warp thread 11 in FIG. 3 has been connected in a knotting or splicing device 76 to a cut-off piece of an auxiliary warp thread 1.
  • the auxiliary warp thread is fed to the device 7 for pulling in the auxiliary warp thread 1 by means of a metering and feeding device 73 with a pair of rollers 74.
  • the pair of rollers 74 can pass the auxiliary warp thread 1 in a rotating manner, and after the end of the transport of the auxiliary warp thread 1, the pair of rollers is separated in the direction of arrow 73 '.
  • the auxiliary warp thread is guided horizontally to the warp thread monitor 2 through the right pull-in tube 71, for example according to FIG. 3b.
  • the auxiliary warp thread 1 is then inserted into the guard slat 21 and blown further into the left draw-in tube 72.
  • the left draw-in tube 72 can be pushed as described above to the heald eye 32 of the heald 31, where the auxiliary warp thread 1 through the heald eye 32 back into the right draw-in tube 71 is threaded.
  • the pull-in tube 71 can be moved further according to the arrows 71 'in Fig. 4a.
  • a perforated needle 60 is inserted between the leaf lamella 40 from the fabric 100. The piercing needle comes to coincide with the right-hand draw-in tube 71, after which the auxiliary warp thread is blown into the piercing needle.
  • FIG. 4a shows that the pull-in needle 71 and the perforated needle 60 lie above the uppermost warp thread 12, the threading process being able to proceed unhindered.
  • all the warp threads 12 and 13 can also be horizontal, or the position of the fabric 100 is changed by pulling it down. This can be achieved by moving a fabric support (not shown) downwards or by moving all heald frames 3 downwards.
  • the perforated needle 60 can remain at the level of the closed position F according to FIG. 4a. Then the perforated needle 60 is pulled back in the direction of arrow 60 'by the reed 4 until the new auxiliary warp thread 1 which is drawn in lies over the fabric 100.
  • a thread clamp 61 which rests laterally on the piercing needle, prevents the auxiliary warp thread 1 from sliding out of the piercing needle 60 prematurely.
  • Fig. 5 the functional elements of the device 101 are shown schematically with drive means.
  • the sword 50 is displaced horizontally and vertically by an arm 56 in the direction of the arrows at 56, and the pull-in tubes 71 and 72 are displaced horizontally by means of the arms 715 and 725, respectively.
  • Rollers 710 are provided for guiding and driving the arms 715, 725.
  • an auxiliary warp thread spool 10 ' is first drawn off by means of an auxiliary blowing tube 73' and the warp thread is inserted into the auxiliary tube 72 '.
  • the auxiliary warp thread 1 moves in the direction of the pair of rollers 74.
  • the auxiliary warp thread is picked up by the pair of rollers 74 and introduced into a memory 75, through which the auxiliary warp thread first runs horizontally until it passes the sensor 91.
  • a counter is set in motion which holds the revolutions of a drive motor 74 'in the pair of rollers 74.
  • the pair of rollers 74 then continues to run until a predetermined number of revolutions of the drive motor 74 'or a predetermined length of the auxiliary warp thread 1 is reached.
  • the tip of the auxiliary warp thread 1 has meanwhile reached the splicer 76 through the memory 75, in which the tip of the auxiliary warp thread is detected after a signal from the sensor 94 has been emitted as the auxiliary warp thread passes.
  • an auxiliary warp thread supply will then form in the memory 75.
  • the suction nozzle 81 which has sucked in the broken warp thread from the warp 10, inserts it into the knotting or splicing device 76, where it is connected to the tip of the auxiliary warp thread 1. Then the end of the broken warp thread 10 'in the suction nozzle 21 can be cut off by scissors 79.
  • the pair of rollers 74 stands still and then reverses its direction of rotation according to arrow 74b. At the same time, blowing air is introduced into the auxiliary pipe 72 'in the conveying direction to the pull-in pipe 71.
  • the auxiliary warp thread was previously cut by scissors 77.
  • the auxiliary warp thread 1 is now controlled through the auxiliary tube 72 ', which is slit laterally, moved to the pull-in tube 71. From there, as described, the auxiliary warp thread is blown into the lamella 21 and further into the draw-in tube 72.
  • the remaining process steps were also set out above.
  • the pull-in tubes 71 and 72 are temporarily over the Air connections 71d and 72d supplied with blown air.
  • the program S for switching the blowing air on and off for the pull-in pipes 71 and 72 is stored in the control S.

Landscapes

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

Claims (7)

  1. Procédé d'introduction d'un fil de chaîne dans la partie formant le tissu d'un métier mécanique, où un fil de chaîne auxiliaire (1) est introduit à travers une partie (31) de guidage du fil au moyen d'un dispositif d'insertion (5, 7), caractérisé en ce que lors du déplacement du dispositif (5, 7) en direction de la pièce, par exemple une lisse (31), la position du dispositif est commandée par le fait qu'un détecteur (54) situé dans le dispositif (5, 50) émet un signal lors du déplacement horizontal en direction de la pièce (31) lorsqu'il passe devant celle-ci, et en ce que le dispositif poursuit alors son déplacement dans la direction de déplacement, sur la distance horizontale séparant le détecteur (54) de la position voulue (52) de la pièce (31) dans le dispositif, de sorte qu'après pénétration de la pièce (31) dans le dispositif (5), celui-ci s'arrête.
  2. Procédé selon la revendication 1, caractérisé en ce que :
    - une ouverture est formée dans la chaîne (10)
    - l'ouverture est élargie au moyen d'un écarteur (50) en biseau pour créer une zone de travail en vue de l'insertion du fil de chaîne auxiliaire (1),
    - le fil de chaîne auxiliaire (1) est introduit au moyen du dispositif d'insertion (5, 7) dans la lisse (31) centrée au moyen de l'écarteur (50), la lisse reposant dans une rainure (52) de l'écarteur (50).
  3. Procédé selon la revendication 1, caractérisé en ce que le signal du détecteur (54) qui indique la position de la lisse (31) est utilisé pour le positionnement du dispositif d'insertion (5, 7), de telle sorte que le dispositif d'insertion (5, 7) soit positionné en vue de l'enfilage du fil de chaîne auxiliaire (1) dans l'oeillet (32) de la lisse (31).
  4. Procédé selon la revendication 2, caractérisé en ce qu'un tube d'insertion (72) du dispositif d'insertion (5, 7) souffle au moyen de son ouverture de soufflage (72a) le fil de chaîne auxiliaire (1) dans l'oeillet (32) de la lisse (31) centrée dans l'écarteur (50), et en ce que le fil de chaîne auxiliaire (1) est repris par l'ouverture d'aspiration (71c) d'un tube d'insertion (71) du dispositif d'insertion (5, 7) situé de l'autre côté de l'oeillet de la lisse.
  5. Dispositif en vue de l'exécution du procédé selon la revendication 1, caractérisé en ce qu'est prévu un dispositif (5) de sélection d'une lisse (31) et de formation d'une ouverture dans la chaîne au moyen d'un écarteur (50), avec au-dessus de la pointe (51), dirigée vers le bas, de cet écarteur (50), des ailes (50a, b) se déployant latéralement depuis la tige (50c) de l'écarteur (50), ces ailes devenant plus larges en remontant suivant la hauteur de la tige (50c).
  6. Dispositif selon la revendication 5, caractérisé en ce que les extrémités (500a, b) des ailes sont repliées l'une vers l'autre vers l'intérieur.
  7. Dispositif selon la revendication 6, caractérisé en ce que dans les ailes (50a, b) en avant de la tige (50c) dans le sens du déplacement de l'écarteur, sont disposés un détecteur (54) et une source de lumière (55) en vue de la détection de la lisse (31) à centrer, et en ce que dans la tige (50c) est usinée une rainure (52) de réception de la lisse.
EP90810672A 1989-10-03 1990-09-05 Procédé et dispositif pour rentrer un fil de chaîne dans les parties formant un tissu dans un métier à tisser Expired - Lifetime EP0421923B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3595/89 1989-10-03
CH359589 1989-10-03

Publications (2)

Publication Number Publication Date
EP0421923A1 EP0421923A1 (fr) 1991-04-10
EP0421923B1 true EP0421923B1 (fr) 1994-06-08

Family

ID=4259378

Family Applications (2)

Application Number Title Priority Date Filing Date
EP90810672A Expired - Lifetime EP0421923B1 (fr) 1989-10-03 1990-09-05 Procédé et dispositif pour rentrer un fil de chaîne dans les parties formant un tissu dans un métier à tisser
EP90810673A Expired - Lifetime EP0421924B1 (fr) 1989-10-03 1990-09-05 Procédé et dispositif pour réparer les casse-fil dans un métier à tisser

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP90810673A Expired - Lifetime EP0421924B1 (fr) 1989-10-03 1990-09-05 Procédé et dispositif pour réparer les casse-fil dans un métier à tisser

Country Status (4)

Country Link
US (2) US5088523A (fr)
EP (2) EP0421923B1 (fr)
JP (2) JPH03130441A (fr)
DE (3) DE59006019D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH679598A5 (fr) * 1989-12-22 1992-03-13 Zellweger Uster Ag
CH682577A5 (de) * 1990-09-17 1993-10-15 Zellweger Uster Ag Vorrichtung zur Handhabung von Litzen oder Lamellen in einer Kettfadeneinziehmaschine.
CH687542A5 (de) * 1993-09-13 1996-12-31 Staeubli Ag Zweigwerk Sargans Vorrichtung zur selektiven Uebergabe von Litzen.
ATE334241T1 (de) * 2001-04-25 2006-08-15 Staeubli Ag Pfaeffikon Vorrichtung und verfahren zur separierung von fäden aus einer fadenschicht
SE520453C2 (sv) * 2001-11-01 2003-07-15 Alfa Laval Corp Ab En apparat för samtidig rening av en vätska och en gas
US7338546B2 (en) * 2006-04-19 2008-03-04 Alfa Laval Corporate Ab Centrifugal separator for cleaning gas generated by an internal combustion engine and a method for operating the same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60224842A (ja) * 1984-04-19 1985-11-09 帝人製機株式会社 糸通し方法およびその装置
NL8600372A (nl) * 1986-02-14 1987-09-01 Picanol Nv Inrichting voor het bepalen van de plaats van een kettingbreuk bij weefmachines met kettingwachterlamellen.
DE3764218D1 (de) * 1986-07-08 1990-09-13 Picanol Nv Verfahren und vorrichtung zum vereinfachen der reparatur eines kettfadens in webmaschinen mit abstellamellen.
NL8602192A (nl) * 1986-08-28 1988-03-16 Picanol Nv Werkwijze voor het herstellen van een kettingbreuk bij weefmachines en herbedradingsinrichtingen hierbij aangewend.
BE1000376A4 (nl) * 1987-03-13 1988-11-16 Picanol Nv Werkwijze voor het ter hoogte van de kettingwachter afzonderen van een gebroken kettingdraad uit de ketting bij een weefmachine, alsook inrichting die deze werkwijze toepast.
JP2663269B2 (ja) * 1987-11-26 1997-10-15 津田駒工業株式会社 継ぎ糸処理装置

Also Published As

Publication number Publication date
JPH03137253A (ja) 1991-06-11
EP0421924A1 (fr) 1991-04-10
EP0421924B1 (fr) 1994-06-08
EP0421923A1 (fr) 1991-04-10
US5088523A (en) 1992-02-18
DE59006019D1 (de) 1994-07-14
DE59006017D1 (de) 1994-07-14
JPH03130441A (ja) 1991-06-04
DE9012907U1 (de) 1990-11-15
US5082030A (en) 1992-01-21

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