EP1923494B1 - Lance de transfert pour un métier à tisser à pince - Google Patents

Lance de transfert pour un métier à tisser à pince Download PDF

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Publication number
EP1923494B1
EP1923494B1 EP08003534A EP08003534A EP1923494B1 EP 1923494 B1 EP1923494 B1 EP 1923494B1 EP 08003534 A EP08003534 A EP 08003534A EP 08003534 A EP08003534 A EP 08003534A EP 1923494 B1 EP1923494 B1 EP 1923494B1
Authority
EP
European Patent Office
Prior art keywords
yarn
thread
clamp
piece
weft
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
EP08003534A
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German (de)
English (en)
Other versions
EP1923494A1 (fr
Inventor
Eddy Verclyte
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.)
Picanol NV
Original Assignee
Picanol NV
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 Picanol NV filed Critical Picanol NV
Publication of EP1923494A1 publication Critical patent/EP1923494A1/fr
Application granted granted Critical
Publication of EP1923494B1 publication Critical patent/EP1923494B1/fr
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
    • D03D47/12—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
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/233—Carrying grippers

Definitions

  • the invention relates to a Geber gripper for a rapier according to the preamble of claim 1.
  • the gripper grippers arranged on a gripper belt or a gripper bar are moved at very high speeds. From this high speed they must be slowed down when they reach the transfer point, where the taker takes over the weft. Due to its inertia, it may happen that the weft thread moves on, so that the piece of thread to be taken over by the taker leaves its predetermined position. It can thus happen that the taker does not grasp the weft thread, so that a weft failure occurs. The risk of getting rid of the piece of thread to be accepted can also occur in heavy weft threads even if a well-functioning thread brake is provided on the entry side, since the inertia forces elastically stretch the weft thread after the thread brake.
  • the release of the to be accepted by a taker piece of thread is then prevented when this piece of thread is held between two thread clamps ( GB 1487897 ).
  • two identical thread clamps are provided, which are loaded by the same spring element.
  • the piece of thread located between the two thread clamps, which is to be taken over by the taker will not move out of the range of the predetermined position even when braking from high speeds.
  • the taker has a hook-shaped head with which he has to reach behind the thread piece held between the two thread clamps. In this case, the hook-shaped head deflects the thread piece, which then moves back behind the hook when the hook-shaped head is moved past the thread piece. This deflection may result in poorly elastic and / or only a relatively low strength weft threads cause the piece of thread is damaged or destroyed, so that then the piece of thread can not be taken and a weft error occurs.
  • the invention has the object of providing a Gebergreifer, of the type mentioned in such a way that a deflection of the thread piece between the two thread clamps leads to no damage and / or destruction of this thread piece.
  • the thread clamps keep the weft thread clamped by it even at high deceleration forces, so that the thread piece does not leave its predetermined position.
  • the deflection of the thread piece due to the hook-shaped element of the receiver generates tensile forces in the thread piece, due to which the resilient element yields such that avoided excessive stress on the piece of thread becomes. If the recipient has penetrated far enough into the Gebergreifer so that the hook-shaped element engages behind the thread piece, the deflection of the thread piece is reversed, since the resilient element moves back to its normal position. The piece of thread is stretched again, so that it passes safely behind the hook-shaped element and is gripped.
  • Gebergreifer 1 corresponds in its basic structure in the WO 99/18274 described Gereiokfer. It is therefore based on the description in the WO 99/18274 with reference. In the present application, the same reference numerals are used.
  • the Gebergreifer invention 1 is equipped with a second, uncontrolled thread clamp 50, whose function will be explained.
  • This additional Thread clamp is formed by a designed as a leaf spring clamping element 51 and the inner surface of the top of the body forming portion 6 of the Gebergreifers 1.
  • the resilient clamping element 51 is attached to the bottom of the body forming portion 4.
  • this attachment is effected by means of two screws 45, with which the main body of Gebergreifers 1 is attached to a gripper belt 2.
  • the designed as a leaf spring clamping element 51 is extended beyond the nip of the thread clamp 50 addition with a guide member 52 which extends forward to the front end of the Gebergreifers 1 and is bent to the side and down. This guide element 52 serves to ensure that a weft thread 25 reaches securely into the region of the nip 53 of the thread clamp 50.
  • the clamping force with which the thread clamp 50 holds the weft thread 25 is relatively small, since it only has to prevent a movement of the weft thread 25 against the inertia forces which occur during a deceleration. It is therefore also designed for a low value, since it must be possible without further ado that the taker can pull out the weft thread taken by him from the thread clamp 50. Therefore, no opening device must be provided for this thread clamp 50.
  • the nip 53 of the thread clamp 50 is in the direction of movement of Gebergreifers something in front of the stop 23 of the guide 22. This is achieved above all that only a small amount of dust is to be expected. Any resulting dust can not be deposited due to the open structure of the thread clamp 50.
  • Fig. 5 dashed the head of a hook-shaped receiver 55 is shown, which penetrates into the Gebergreifer 1.
  • the head 55 has a hook-shaped projection 56, which is opposite to the thread piece of the weft thread 25, which is located between the thread clamp 15, 16 and the thread clamp 50.
  • the piece of thread of the weft thread 25 is deflected between the thread clamps 15, 16 and 50 of the hook-shaped projection 56, as shown in Fig. 5 is shown.
  • the hook-shaped projection 56 has moved past the thread piece of the weft thread 25, this should again be in Fig. 5 take shown, stretched position so that it is then taken and moved when moving back the head 55 of the hook-shaped receiver.
  • the thread clamp 50 is formed so that the resilient clamping element 51 yields in the opening direction, when in the Thread piece between the two thread clamps 15, 16 and 50 an additional tensile force is introduced.
  • This yielding is in Fig. 5 indicated by dashed lines. Since the additional pulling force disappears again when the hook-shaped projection 56 has moved past the thread piece of the weft thread 25, the resilient clamping element 51 moves back into the closed position, so that the thread piece is stretched again and arrives safely behind the hook-shaped projection 56 , In the embodiment according to Fig. 5 the thread clamp is opened 50 only very briefly, so that the weft thread 25 during this time does not have the opportunity to move out of the thread clamp 50 out.
  • the stationary clamping surface is a separate component which is attached to the main body of the Gebergreifers 1.
  • the thread clamp 50 is designed so that it provides for the compensation of the required for the deflection of the thread piece of the weft thread 25 distance available without the thread clamp 50 opens completely.
  • a thread clamp 50 with this function is in Fig. 6 shown.
  • the resilient clamping element 51 ' has a relatively wide in the direction of movement of the Geber gripper 1 clamping surface and is also designed so that it can deform elastically in the form of torsion about a longitudinal axis. As in Fig. 6 is illustrated, to compensate for the deflection by the head 55 of the receiver, this clamping surface is only tilted, so that the clamping effect is not completely eliminated.
  • the thread clamp 50 has two movable clamping elements 53, 54 which are adjacent to each other.
  • the inner clamping element 54 ie that of the end of the weft thread 25 holding thread clamp 15, 16 facing clamping element is designed so that it yields elastically in the position shown in dashed lines occurring in the thread piece tensile forces.
  • the clamping element 53 is stiffer, so that the part of the thread clamp 50 formed by it is not opened.
  • two independently designed and fixed clamping elements 53, 54 may be used be provided of the one-piece element.
  • clamping elements 53, 54 do not act directly on the base body 6 but on a clamping piece attached to the base body 6.
  • the tensile elastic forces in the thread piece elastic element for example, the element 54 does not jam the weft 25 but only deflects.
  • Such an elastic element is then arranged in a modified embodiment in the vicinity of the thread clamp 15, 16 or the deflection 13.
  • the resilient element itself does not have to be a resilient element.
  • a rigid, crank-shaped element can be provided, which is rotatably mounted and held with a torsion spring.
  • the clamping element is not resiliently resilient, but by means of magnetic forces, permanent magnets or electrically controllable magnets are used.
  • the free end of the weft thread 25 associated thread clamp 15, 16 is arranged in the lower region of the Gebergreifers 1, while the second thread clamp 15 is in the upper region of the Gebergreifers 1.
  • this arrangement can also be reversed.
  • the invention is not limited to the shape of the main body of Gebergreifers 1.
  • Gebergreifer can be used, which are composed of several elements.
  • the resilient element 51, 51 ', 54 in the vicinity of the end of the thread piece of the weft thread 25 facing away from thread clamp 50 is arranged and / or that the resilient element 51, 51 ', 54 is part of a thread clamp 50 and / or the resilient element 51, 51', 54 is a clamping element of the thread clamp 50 and / or a base body is provided, wherein in the region of a side wall 8 and a bottom 4 and in the region of a further side wall 9 and in the region of an upper side 6 are each provided a thread guide, in each of which one of the thread clamps 15, 16; 50 is arranged and / or the end of the weft thread facing away from thread clamp 50 has a stationary clamping surface for an against this clamping surface abutting resilient clamping element 51, 51 'and / or the clamping element 51 is designed and / or arranged such that it by means of a Pulling force in the thread piece of the weft thread 25 is movable

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

Claims (11)

  1. Pince d'amenée pour un métier à tisser à pinces ayant un corps de base qui est prévu dans la région du côté inférieur d'une paroi latérale (8) d'un guide-fil (24) et d'un pince-fil (15, 16) et d'un guide-fil (22) dans la région du côté supérieur de la paroi (9) opposée, pour retenir un tronçon de fil d'un fil de trame (25) entre le pince-fil (15, 16) et le guide-fil (22) pour un dispositif de préhension (55), caractérisée en ce qu'au guide-fil (22), dans la région de la paroi latérale (9) opposée au pince-fil (15, 16), un pince-fil (50) incontrôlé est assigné, qui contient un élément (51, 51', 54) cédant flexiblement sous l'effet d'une force de traction dans le tronçon de fil du fait d'une déviation, lequel revient dans son position de base et retend à nouveau le tronçon de fil lorsque la déviation est inversée.
  2. Pince d'amenée selon la revendication 1, caractérisée en ce qu'il est prévu un guide-fil étant à chaque fois dans la région d'une paroi latérale (8) et d'un côté inférieur (4) et dans la région d'une autre paroi latérale (9) et dans la région d'un côté supérieur (6), à proximité duquel est disposé à chaque fois un des pince-fils (15, 16; 50).
  3. Pince d'amenée selon la revendication 1 ou 2, caractérisée en ce que le pince-fil (50) incontrôlé présente une surface de serrage stationnaire pour un élément de serrage (51, 51') flexible s'appliquant contre cette surface de serrage.
  4. Pince d'amenée selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'élément de serrage (51) est configuré et/ou disposé de telle sorte qu'il puisse être déplacé depuis la surface de serrage stationnaire au moyen d'une force de traction dans le tronçon de fil du fil de trame (25).
  5. Pince d'amenée selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'élément de serrage (51') est configuré et/ou disposé de telle sorte qu'il puisse tourner autour d'un axe longitudinal au moyen d'une force de traction dans le tronçon de fil du fil de trame (25).
  6. Pince d'amenée selon l'une quelconque des revendications 1 à 5, caractérisée en ce que la surface interne du côté supérieur (6) du corps de base ou une pièce de serrage montée sur le corps de base (6) sert de surface de serrage stationnaire.
  7. Pince d'amenée selon l'une quelconque des revendications 1 à 6, caractérisée en ce que l'on prévoit en tant qu'élément flexible (51) un ressort à lame.
  8. Pince d'amenée selon l'une quelconque des revendications 1 à 7, caractérisée en ce que l'élément flexible (51, 51', 54) fait saillie avec un élément de guidage (52) dans la direction de l'extrémité avant du corps de base au-delà de la région du point de serrage (53) du pince-fil (50).
  9. Pince d'amenée selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le point de serrage (53) du pince-fil (50) incontrôlé opposé à l'extrémité du fil de trame (25) est ramené en arrière par rapport au point de serrage de l'autre pince-fil (15, 16) - vu dans la direction de déplacement de la pince (1).
  10. Pince d'amenée selon l'une quelconque des revendications 1 à 9, caractérisée en ce que le point de serrage (53) du pince-fil (50) incontrôlé opposé à l'extrémité du fil de trame (25) se situe dans la direction de déplacement de la pince avant une butée (23) qui limite le guidage du fil (22) de la paroi latérale adjacente (9).
  11. Pince d'amenée selon l'une quelconque des revendications 1 à 10, caractérisée en ce que le pince-fil (50) incontrôlé est calculé pour une force de serrage plus petite que le pince-fil (15, 16) contrôlé.
EP08003534A 2002-09-20 2002-09-20 Lance de transfert pour un métier à tisser à pince Expired - Lifetime EP1923494B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/EP2002/010613 WO2004033778A1 (fr) 2002-09-20 2002-09-20 Lance de transfert pour metier a tisser a lances
EP02772333A EP1540058B1 (fr) 2002-09-20 2002-09-20 Lance de transfert pour metier a tisser a lances

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02772333A Division EP1540058B1 (fr) 2002-09-20 2002-09-20 Lance de transfert pour metier a tisser a lances
EP02772333.7 Division 2002-09-20

Publications (2)

Publication Number Publication Date
EP1923494A1 EP1923494A1 (fr) 2008-05-21
EP1923494B1 true EP1923494B1 (fr) 2012-02-08

Family

ID=32087922

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08003534A Expired - Lifetime EP1923494B1 (fr) 2002-09-20 2002-09-20 Lance de transfert pour un métier à tisser à pince
EP02772333A Expired - Lifetime EP1540058B1 (fr) 2002-09-20 2002-09-20 Lance de transfert pour metier a tisser a lances

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP02772333A Expired - Lifetime EP1540058B1 (fr) 2002-09-20 2002-09-20 Lance de transfert pour metier a tisser a lances

Country Status (7)

Country Link
US (1) US7128098B2 (fr)
EP (2) EP1923494B1 (fr)
CN (1) CN1705778B (fr)
AT (2) ATE544892T1 (fr)
AU (1) AU2002337122A1 (fr)
DE (1) DE50213973D1 (fr)
WO (1) WO2004033778A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7543610B2 (en) * 2006-06-16 2009-06-09 Sultex Ag Thread clamp for a rapier head
DE602005012062D1 (de) * 2005-05-17 2009-02-12 Promatech Spa Bringergreifer für Webmaschinen mit einer (Anti-Schlingen-)Vorrichtung zur Vermeidung von vorzeitigem Greifen des Schussfadens
DE502006002809D1 (de) * 2006-01-06 2009-03-26 Sultex Ag Bringergreifer für eine Greiferwebmaschine
DE502006003985D1 (de) * 2006-01-24 2009-07-30 Sultex Ag Gesteuerte Fadenbremse
DE102006025968B3 (de) * 2006-06-02 2007-11-29 Lindauer Dornier Gmbh Verfahren zum Klemmen eines Schussfadens in einer Düsenwebmaschine, insbesondere Luftdüsenwebmaschine, Klemmeinrichtung und Düsenwebmaschine
EP1918437A1 (fr) * 2006-11-02 2008-05-07 Sultex AG Procédé et dispositif pour l'insertion du fil de trame
BE1017477A3 (nl) * 2007-02-26 2008-10-07 Picanol Nv Een grijperweefmachine voorzien van een gevergrijper en een ombuiggeleiding.
EP2037023A1 (fr) * 2007-09-12 2009-03-18 Sultex AG Pince-fil pour une tête de pince et son procédé de fonctionnement
BE1019316A3 (nl) * 2010-04-29 2012-06-05 Picanol Nv Lans en grijperweefmachine.
DE102010044127B3 (de) * 2010-11-18 2011-12-29 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Greiferkopf zum Eintrag von Schussfäden an einer Greiferwebmaschine sowie eine Greiferwebmaschine mit einem derartigen Greiferkopf
CN101988230B (zh) * 2010-11-26 2012-05-23 浙江奔特纺织机械有限公司 一种适用于挠性剑杆织机的剑头组件
CN104805571B (zh) * 2015-04-17 2016-04-06 徐向忠 一种无铰摇杆滑块机构及剑杆织机用接纬剑头
ITUB20155478A1 (it) * 2015-11-11 2017-05-11 Pezzoli Miria Dispositivo per l?apertura di un elemento di presa di filo di trama di un telaio a pinza, relativo 5 elemento di presa e metodo di apertura di un tale elemento di presa
IT201700066823A1 (it) * 2017-06-15 2018-12-15 Itema Spa Sistema perfezionato di presa/rilascio del filo di trama in un telaio tessile a proiettile
BE1026412B1 (nl) 2018-06-21 2020-01-30 Nv Michel Van De Wiele Gevergrijperkop
CN109137225A (zh) * 2018-10-10 2019-01-04 张克杰 一种适用于多种纱线剑杆机送纬剑头

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Publication number Priority date Publication date Assignee Title
JPS5156680A (en) 1974-11-14 1976-05-18 Seiko Instr & Electronics Denshidokeino byoshuseisochi
FR2337775A1 (fr) * 1975-09-29 1977-08-05 Et.Co.Ma Sarl Pince de tirage auto-serrante pour passe-trame
EP0146663B1 (fr) * 1983-12-14 1988-03-02 GebràœDer Sulzer Aktiengesellschaft Organe d'insertion du fil de trame pour machines à tisser à griffes
IT1226865B (it) * 1988-08-19 1991-02-20 Nuovo Pignone Spa Perfezionamenti in una pinza passatrama di condotta per telai tessili senza navetta.
IT1238606B (it) * 1990-01-26 1993-08-18 Nuovo Pignone Spa Dispositivo perfezionato di pinzatura del filo di trama in un telaio tessile senza navetta
CN2113994U (zh) * 1991-11-20 1992-08-26 陈河田 改进的无梭剑带夹纱器
IT1254987B (it) * 1992-06-23 1995-10-11 Luciano Corain Perfezionamento in una pinza di trazione per telaio tessile
EP0769580B1 (fr) * 1995-10-17 2002-03-20 Sulzer Textil AG Dispositif de retenue d'un fil pour une griffe d'amenée
EP0906461B1 (fr) * 1996-06-07 2001-11-28 Picanol N.V. Pince de transfert pour une machine a tisser a rapieres
BE1011480A3 (nl) * 1997-10-03 1999-10-05 Picanol Nv Gevergrijper voor een grijperweefmachine.
EP0940490B1 (fr) * 1998-03-05 2003-05-21 Sultex AG Pince-fil pour un métier à tisser et métier à tisser avec un tel pince-fil
DE29808997U1 (de) * 1998-05-18 1998-07-30 Textilma Ag, Hergiswil Greifer und eine Schusseintragvorrichtung für eine Greiferwebmaschine
DE29811373U1 (de) * 1998-06-26 1998-11-05 Emil Jäger GmbH & Co KG, 48153 Münster Geber-Greiferkopf mit Haltevorsprung für Schußfäden
DE59908000D1 (de) * 1998-09-02 2004-01-22 Sultex Ag Rueti Verfahren und System zum Eintragen eines Schussfadens in einer Greiferwebmaschine
ATE315119T1 (de) * 1998-10-21 2006-02-15 Picanol Nv Fadenklemme für einen greifer einer greiferwebmaschine

Also Published As

Publication number Publication date
EP1923494A1 (fr) 2008-05-21
AU2002337122A1 (en) 2004-05-04
CN1705778B (zh) 2010-06-23
ATE447059T1 (de) 2009-11-15
WO2004033778A1 (fr) 2004-04-22
DE50213973D1 (de) 2009-12-10
US7128098B2 (en) 2006-10-31
US20050284533A1 (en) 2005-12-29
EP1540058A1 (fr) 2005-06-15
CN1705778A (zh) 2005-12-07
EP1540058B1 (fr) 2009-10-28
ATE544892T1 (de) 2012-02-15

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