EP0759484B1 - Vorrichtung zum Eintrag von Schussfaden an einer Greiferwebmaschine - Google Patents

Vorrichtung zum Eintrag von Schussfaden an einer Greiferwebmaschine Download PDF

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Publication number
EP0759484B1
EP0759484B1 EP96420264A EP96420264A EP0759484B1 EP 0759484 B1 EP0759484 B1 EP 0759484B1 EP 96420264 A EP96420264 A EP 96420264A EP 96420264 A EP96420264 A EP 96420264A EP 0759484 B1 EP0759484 B1 EP 0759484B1
Authority
EP
European Patent Office
Prior art keywords
ribbon
longitudinal axis
permanent magnets
symmetry
plane
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
EP96420264A
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English (en)
French (fr)
Other versions
EP0759484A1 (de
Inventor
Christophe Saint Sulpice
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.)
ICBT Diederichs SAS
Original Assignee
ICBT Diederichs SAS
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Publication date
Application filed by ICBT Diederichs SAS filed Critical ICBT Diederichs SAS
Publication of EP0759484A1 publication Critical patent/EP0759484A1/de
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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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms
    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/271—Rapiers
    • D03D47/272—Rapier bands

Definitions

  • the invention relates to the field of looms, more particularly weaving looms whose insertion of the weft thread is ensured by spears. More specifically, it aims to improve in the device for guiding said lances through the crowd.
  • the leaf receives, so known, two spears which run symmetrically through the crowd, with one edge fabric, to the center, in an alternating movement.
  • Each lance has at its free end a clamp capable of grasping thread.
  • the so-called “input” pliers grip the wire on an edge of the fabric to bring it to the center of the crowd, where it exchanges it with the so-called clamp “outlet” which leads the weft thread to the opposite edge of the fabric.
  • this solution does not present a means allowing a centering of the clamp relative to the guide means, which may prove annoying when using pliers eccentric to the tape, this which is the case in particular with the pliers commonly called “pliers positive ".
  • the wide shape of the metallic elements embedded in the tape does not allow for high precision lateral guidance, so that we know that this is a critical point, especially with regard to concerns the exchange of the weft thread from one clamp to another.
  • the problem which the invention proposes to solve is to provide a system for guiding the lance relative to the wing, which is light and easily integrated into a loom, while ensuring precise centering of the lance relative to the leaf.
  • the invention relates to a device for inserting the weft thread, usable on rapier weaving looms, each of the spears being composed pliers and a ribbon, in which the ribbons move by reciprocating movement from both sides of the fabric as it enters approximately the same distance in the crowd so that the clamps transmit said frame, said spears traversing the crowd by sliding on a fault integral with the leaf and flush with the wires of the lower tablecloth of the crowd, and in which the guidance of said spears relative to the leaf is magnetically secured by an element in ferromagnetic material and a plurality of permanent magnets arranged on the ribbon and on the leaf.
  • the clamp is guided by the interaction between magnets placed on the ribbon and a metal element located under the breakdown.
  • the magnet and the workpiece slender attract each other, so that the clamp remains on the trajectory corresponding to the minimum distance between the magnet and said element slender.
  • each magnet is grouped on the longitudinal axis tape, while the area of the elongate element likely to be the strongest attraction by the magnet, is also located in relation to the axis longitudinal of the ribbon.
  • the magnet-element assembly elongated naturally tends to come to face the axis longitudinal of the ribbon with the thickest area of the element long, which allows optimal centering and self-correcting.
  • the shape of the characteristic elements means that the position balance is automatically centered.
  • permanent magnets marry a disc shape while the ferromagnetic element marries a cylinder shape.
  • the ribbon has recessed areas in which come insert the magnetic discs.
  • the leaf has a longitudinal groove whose opening is directed under the purlin and in which is housed the ferromagnetic element.
  • Figure 1 is a perspective view of the insertion area of the frame, showing a lance entering the crowd.
  • Figure 2 is a section of Figure 1 along a vertical plane parallel to a chain wire showing the characteristic details of a lance according to the invention.
  • the invention relates to an improvement of the lance guide system in the pincer looms.
  • the traditional loom on which is installed the invention comprises a leaf (1), a comb (2) and a track (3) flush with the part (4) of the crowd (5) in contact with the leaf (1) when said crowd (5) is open.
  • the insertion of the weft thread is conventionally obtained by the reciprocating movement of a lance (6) whose free end supports a pliers (7) able to take the weft thread from one edge of the fabric to crowd center.
  • the invention can be applied indifferently to lances equipped with so-called “positive” pliers and in which the exchange of the weft thread between the clamps is carried out by actuation of an external member on the pliers, as with so-called pliers "negative” in which the exchange of the weft thread is carried out by tearing. In this way, we will not describe here in detail the precise structure pliers.
  • the tape (8) on which is fixed the clamp comprises several discs (9) arranged along the longitudinal axis of the ribbon (8), in particular at its end which penetrates into the crowd, and which supports the clamp (7).
  • the magnets (9) are housed in imprints of the ribbon, in order to reduce as much as possible the distance between the leaf (1) and the magnets (9).
  • Each of these magnets (9) has a magnetization directed perpendicular to the planar faces ribbon (8).
  • the magnets used are in rare earths and have a diameter of thirteen millimeters and a thickness of four millimeters.
  • the leaf (1) has an extension (10) made of profile which is arranged just below the lower ply (4) of the crowd.
  • this profile (10) has on its upper face, a track (3) made of polypropylene bristles, commonly called breakdown.
  • this breakdown (3) receives the tablecloth lower (4) of the crowd which penetrates slightly inside the hairs.
  • this profile is made of a non-material magnetizable, for example aluminum.
  • This fault (3) also serves as a sliding track for the ribbon (8) of the lance (6).
  • the profile (10) has, just in below the purlin (3), a longitudinal housing (11) in which is inserted a cylindrical bar (12) of ferromagnetic material, by example in soft iron or steel.
  • the groove (11) is arranged in the center of the upper face of the profile (10).
  • the bar ferromagnetic (12) has a maximum thickness according to the plane longitudinal median (14) of the purlin.
  • this cylinder typically is four millimeters.
  • the guide device has the following significant advantages: on the one hand, it allows the lance to be guided over the tip without the use of hooks entering the crowd. On the other hand, the geometry of the elements magnetic ensures self-centering of the ribbon on the leaf.

Landscapes

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

Claims (8)

  1. Vorrichtung für den Eintrag des Schußfadens, welche auf Webstühlen mit Greiferstäben einsetztbar ist, wobei jeder Greiferstab (6) aus einer Klemme (7) und einem Band (8) besteht, und bei welcher die Bänder (8) sich durch eine hin- und hergehende Bewegung ausgehend von beiden Seiten des Gewebes bewegen, indem sie im wesentlichen über die gleiche Streckenlänge in das Webfach (5) eindringen, damit die Klemmen (7) einander den genannten Schußfaden übergeben, wobei die genannten Greiferstäbe (6) das Webfach (5) durch Gleiten auf einer mit der Weblade (1) fest verbundenen Samtbahn (3) durchlaufen, die sich unterhalb der Fäden (4) der unteren Schicht (4) des Webfachs erstreckt, und bei welcher die Führung der genannten Greiferstäbe (6) in bezug auf die Weblade (1) magnetisch durch ein Element (12) aus ferromagnetischem Material und eine Vielzahl Permanentmagnete (9) gewährleistet ist, welche auf dem Band (8) und auf der Weblade (1) angeordnet sind, dadurch gekennzeichnet:
    daß die Permanentmagnete (9) auf dem Band (8) entlang dessen Längsachse angeordnet sind, wobei das Element aus ferromagnetischem Material durchgehend, langgliedrig und unter der Samtbahn (3) gegenüber der Längsachse des Bandes angeordnet ist,
    daß jeder Magnet eine zu der Richtung der Magnetisierung und zur Längsachse des Bandes (8) parallele Symmetrieebene (13) und eine in seiner Symmetrieebene (13) liegende maximale Länge aufweist
    und daß das ferromagnetische Element eine zu der Richtung der Magnetisierung und zur Längsachse des Bandes (8) parallele Symmetrieebene (14) und eine in seiner Symmetrieebene (13) liegende maximale Dicke aufweist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet , daß die Permanentmagnete (9) die Form einer Scheibe annehmen.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet , daß das ferromagnetische Element (12) die Form eines Zylinders annimmt.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet , daß die Weblade (1) eine längsverlaufende Auskehlung (11) aufweist, deren Öffnung unter die Samtbahn (3) gerichtet ist und in der das ferromagnetische Element (12) aufgenommen ist.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß das Band (8) vertiefte Bereiche aufweist, in denen die Permanentmagnete (9) aufgenommen sind.
  6. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet , daß der Durchmesser jeder Permanentmagnet-Scheibe (9) zwischen fünf und zwanzig Millimetern liegt und daß die Dicke jeder Scheibe zwischen einem und zehn Millimetern liegt.
  7. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet , daß der Durchmesser des Zylinders (12) aus ferromagnetischem Material zwischen drei und zehn Millimetern liegt.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet , daß die Permanentmagnete (9) aus seltener Erde bestehen und das ferromagnetische Element (12) aus Stahl besteht.
EP96420264A 1995-08-18 1996-08-02 Vorrichtung zum Eintrag von Schussfaden an einer Greiferwebmaschine Expired - Lifetime EP0759484B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9510029 1995-08-18
FR9510029A FR2737897B1 (fr) 1995-08-18 1995-08-18 Dispositif pour l'insertion du fil de trame sur un metier a tisser a lances

Publications (2)

Publication Number Publication Date
EP0759484A1 EP0759484A1 (de) 1997-02-26
EP0759484B1 true EP0759484B1 (de) 1999-08-04

Family

ID=9482048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96420264A Expired - Lifetime EP0759484B1 (de) 1995-08-18 1996-08-02 Vorrichtung zum Eintrag von Schussfaden an einer Greiferwebmaschine

Country Status (6)

Country Link
EP (1) EP0759484B1 (de)
JP (1) JPH09111592A (de)
AT (1) ATE182930T1 (de)
DE (1) DE69603553T2 (de)
ES (1) ES2134575T3 (de)
FR (1) FR2737897B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2289073T3 (es) * 2002-08-30 2008-02-01 Promatech S.P.A. Mejoras en las pinzas transportadoras de la trama para telares de tejeduria y en telares de tejeduria con medios de guia para ellas.
BE1015528A3 (nl) * 2003-05-20 2005-05-03 Wiele Michel Van De Nv Werkwijze en inrichting voor het overnemen van een inslaggaren door een nemergrijper van een gevergrjper.
EP1777330A1 (de) * 2005-10-01 2007-04-25 Markus Farner Verfahren zur Abstützung eines Schussfadenführungselements
EP2829646B1 (de) 2013-07-24 2017-09-06 STÄUBLI BAYREUTH GmbH Schussfadeneintragsystem und Webmaschine mit einem solchen System

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT993929B (it) * 1973-09-24 1975-09-30 Martinelli G Telaio perfezionato del tipo senza navetta
US4126159A (en) * 1977-09-29 1978-11-21 Vercaemert Gerard A Apparatus and method for stabilizing rapiers
CH670461A5 (de) * 1986-02-10 1989-06-15 Sulzer Ag

Also Published As

Publication number Publication date
DE69603553T2 (de) 1999-11-25
ATE182930T1 (de) 1999-08-15
FR2737897B1 (fr) 1997-09-19
DE69603553D1 (de) 1999-09-09
FR2737897A1 (fr) 1997-02-21
ES2134575T3 (es) 1999-10-01
EP0759484A1 (de) 1997-02-26
JPH09111592A (ja) 1997-04-28

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