EP1975291B1 - Webmaschine und Webverfahren für einschichtig hergestellten Schlaufenflorgewebe - Google Patents

Webmaschine und Webverfahren für einschichtig hergestellten Schlaufenflorgewebe Download PDF

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Publication number
EP1975291B1
EP1975291B1 EP08356057A EP08356057A EP1975291B1 EP 1975291 B1 EP1975291 B1 EP 1975291B1 EP 08356057 A EP08356057 A EP 08356057A EP 08356057 A EP08356057 A EP 08356057A EP 1975291 B1 EP1975291 B1 EP 1975291B1
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EP
European Patent Office
Prior art keywords
positions
loom
rods
warp
shed
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Application number
EP08356057A
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English (en)
French (fr)
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EP1975291A1 (de
Inventor
Patrick Iltis
Guy Meersschaert
Henk Lambrecht
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Staubli Faverges SCA
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Staubli Faverges SCA
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Publication of EP1975291A1 publication Critical patent/EP1975291A1/de
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/10—Wire-tapestry looms, e.g. for weaving velvet or Brussels or Wilton carpets, the pile being formed over weftwise wires
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C13/00—Shedding mechanisms not otherwise provided for
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/12—Multiple-shed jacquards, i.e. jacquards which move warp threads to several different heights, e.g. for weaving pile fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards
    • D03C3/205—Independently actuated lifting cords

Definitions

  • the invention relates to a simple tablecloth loom for a pile velvet fabric, and to a method of weaving such a velvet fabric.
  • a pile fabric may have, in the same row parallel to the weft, loops and bristles, as described in US-A-2 981 292 .
  • the so-called "pinned velvet" trades are simple tablecloth looms whose chain includes both bottom threads and threads intended to form loops or bristles. These trades have superimposed crowds.
  • the lower crowd allows the insertion of a frame carried by lances, while a higher crowd allows the insertion of a rod around which some of the warp son form a loop.
  • the rods are moved by a device located on one side of the fabric, which device inserts during a pick a rod that it removed from the fabric during a previous pick.
  • Different rods, moved by a device located on one side of the loom can carry a blade at one of their ends, this blade cutting the loop when removing the rod forming two hairs.
  • Velvet looms pinned allow to mix, on the same row parallel to the frame, loops and hairs of different heights.
  • a first method for achieving this objective is shown schematically in Figures 1 and 2 . It requires four knocks A, B, C and D. Two warp threads 1 1 and 1 2 form the bottom of the fabric with weft threads 2. Another warp thread 1 3 forms, during the blow A, a loop around a rod 31, before being incorporated in the bottom of the fabric until the fourth blow D. A fourth warp 1 4 forms a loop around the rod 31 and a rod 32 equipped with a blade, this second rod being inserted at the third stroke C above the bottom of the fabric.
  • the comb stroke subsequent to the insertion of the second bead wire 32 at the cut C places the second bead wire 32 above the first bead wire 31.
  • Another method is to insert an organ called "double iron” which has two superimposed rods, one to form a loop and the other, superimposed on the first, to form the bristles. It is then necessary to form three crowds to simultaneously insert a bottom frame and two rods, which requires the use of shedding means for placing warp son in four different positions.
  • US-A-5,522,435 also plans to obtain four positions from a three-position Jacquard combined with a mobile stand. If such material is used with rods, during the extraction of the rods, the warp son can be placed below or above the frame, and between the rods. When the insertion stroke of the rods, the son can be placed below or above the hair rod, or above the frame. Such an approach does not allow placing a pile yarn or loop below the weft to create a background effect.
  • two Jacquard devices can be assembled in three positions.
  • the crowd of the first device is set so as to be able to control the loop threads, while the crowd of the second device is adjusted so as to be able to control the pile threads.
  • the invention intends to remedy more particularly by proposing a new loom for pinned velvet whereby loops and bristles can be easily obtained, with a high production rate and limited risk of defects.
  • the use of individually controlled electric actuators makes it possible to distribute warp yarns so as to form at least three superimposed crowds dedicated respectively to the insertion of the weft threads and to the insertion of the two rods of guiding, so that, during the same duite, a weft and two rods can be set up in these three crowds.
  • the individually controlled electric actuators make it possible to adjust the profiles of movement of the rails, so that the formed crowds are optimized with respect to the passage of the guide lances of the weft threads, on the one hand, and the rods, on the other hand.
  • the actuators are capable of conferring on the rails at least four positions defining the crowds such that the difference between two of these positions, taken perpendicularly to an insertion plane of the weft threads, is different from the gap. caught between two other of these positions.
  • At least one of the loom rods can be equipped with a cutting blade loops formed around it, which allows to create bristles.
  • the actuators are advantageously capable of imparting to certain slats at least one movement profile such that the distance, taken at the level of a comb of the loom, between two plies of warp threads remains constant during the insertion of the rods. This optimizes the available volume for the insertion of the rods and limits the risk that the rods pass through the warp son forming the webs.
  • the simple tablecloth M represented schematically in the figure 3 is equipped with warp yarns 1 each passing through an eyelet 36 of a yoke 3 animated by a movement of vertical oscillations represented by the double arrow A 1 , this movement being generally perpendicular to the direction of movement of the weft yarns represented by the double arrow A 2 .
  • Each arm 3 is connected by a cord 4 to a pulley 5 driven in rotation by an electric actuator 6, for example a servomotor of the type described in FIG. FR-A-2,772,791 .
  • each rail is connected to a return spring 8 integral with the frame 9 of the trade M.
  • the number of actuators 6 of the trade M can be very large, for example of the order of 10,000 or more.
  • a central computer C 11 is used, in conjunction with several remote computers C 21 , C 22 , C 23 ... C 2i .
  • Each computer C 2i is disposed near the servomotors 6 that it controls, while being connected to the central computer C 11 by means of an electrical connection L 2i .
  • the computer C 11 receives a signal S 1 representative of the instantaneous position of the loom M in its cycle, for example the instantaneous angular position ⁇ of its main shaft 10.
  • the calculator C 11 is also linked to a unit U 1 in which the references of the desired armor are stored. Depending on the armor to be produced, the computer C 11 receives from the unit U 1 a signal S 2 representative of the type of movement profile that must follow each rail 3 actuated by each servomotor 6 controlled by one of the computers C 2i .
  • a flexible lance 11 is provided for introducing a weft yarn 2 into a shed F 1 defined between two plies of warp yarn 1.
  • the weft yarn 2 comes from a feeding device 21, while the spear 11 is controlled in its movement through a gear wheel 12.
  • Other means of driving the lance 11 to the crowd F 1 or extraction of the lance relative to this crowd may be provided.
  • the lance 11 is equipped with a claw 13 for hooking the weft thread 2.
  • the loom M also comprises a device 30 for inserting two rods 31 and 32 in two other crowds formed by the warp yarns 1 above the shed F 1 .
  • the two rods 31 and 32 are mounted on a support 33 driven parallel to the insertion direction of the weft son in the crowd, represented by the double arrow A 2 , by a jack 34.
  • Other means of driving the support 33 parallel to the double arrow A 2 are possible.
  • the rod 31 has a circular section over its entire length. Alternatively, the section of the rod 31 may be rectangular throughout its length.
  • the rod 32 carries, at its end opposite the support 33, a blade 35 for cutting the warp threads 1.
  • Two warp threads 1 1 and 1 2 form the binding chain of the fabric being manufactured and constitute with the weft son 2 the bottom of the fabric.
  • Three other warp threads 1 3 , 1 4 and 1 5 are used to form loops and bristles extending upwardly from the bottom of the fabric.
  • the thread 1 3 passes over the two rods 31 and 32, before passing under the weft thread 2 at the stroke C, then between the rods 31 and 32 at the stroke D, before being incorporated at the bottom of the fabric from the stroke E.
  • the wire 1 4 pass, meanwhile, between the rods 31 and 32 at the stroke B then in the bottom of the fabric between the strokes C and E, before passing respectively over the rod 32 during the stroke F and above the rod 31 during the stroke H.
  • the wire 1 5 is integrated at the bottom of the fabric until the stroke C, then passes over the rod 32 at the shot D before being integrated in the bottom of the fabric during the stroke F and then iron over the rod 32 at the stroke H.
  • the device 30 comprises several supports 33 equipped with rods 31 and 32 and controlled by a jack or the like, which makes it possible to keep the rods 31 and 32 engaged between the warp threads for a few strokes after the part of the fabric in which which they are in place has exceeded the point of striking P F.
  • the stroke C of the different smooth 3 is a function of the angle of the trade ⁇ .
  • the curves C 1 , C 2 represent respectively the position of the son 1 1 and 1 2 in the configuration of the figure 5 .
  • the respective low and high dead points of the curves C 1 and C 2 define the position of two plies N 1 and N 2 of warp yarns arranged in the loom M by defining between them the shed F 1 in which are successively introduced strands of frame 2.
  • D 1 is the amplitude of the crowd F 1 , this amplitude being equal to the distance between the plies N 1 and N 2 .
  • the distance between the plane ⁇ and the layer N 1 and 12 the distance between the plane ⁇ and the layer N 2.
  • the distance d 11 is less than the distance d 12 , so that the plane ⁇ is closer to the ply N 1 than the ply N 2 .
  • the profile of the curves C 1 and C 2 is asymmetrical, which makes it possible to adapt the shape of the lower part of these curves, that is to say of the portion between the plane ⁇ and the web N 1 , to guide the lance 11 in its movement inside the crowd F 1 .
  • the geometry of the crowd F 1 makes it possible to improve the stability of the lance during its movements along the arrow F 2 .
  • the curve C 3 represents the position of the control rod of the wire 1 3 of the figure 5 .
  • This curve makes it possible to define a third ply N 3 corresponding to the position of a warp when it has to pass between the rods 31 and 32.
  • the curve C 3 tangents the ply N 3 during the blow D.
  • D 2 the distance between the sheets N 2 and N 3 .
  • the curve C 3 also makes it possible to define, by its highest point, a sheet N 4 corresponding to the position of a warp when it must pass over the rod 32.
  • Note D 3 the distance between the layers N 3 and N 4 .
  • the plies N 1 to N 4 thus correspond to four positions of the eyelet 36 of a rail 3 controlled by a servomotor 6. These positions, that is to say the values of the distances d 11 , d 12 , D 2 and D 3 are easily adjustable by means of calculators C 11 , C 21 ... C 2i .
  • the distances D 1 , D 2 and D 3 are different by being adapted to the geometry of the pieces passing respectively in the crowd F 1 , in a crowd F 2 , defined between the sheets N 2 and N 3 , and in a crowd F 3 , defined between the sheets N 3 and N 4 . More precisely, the distance D 1 is determined as a function of the height of the claw 13, while the distances D 2 and D 3 are determined respectively as a function of the height of the rods 31 and 32.
  • the notion of height corresponds to the dimension of an object taken perpendicular to the plane ⁇ .
  • the curve C 3 comprises a portion C 3A which tangents the position of the sheet N 4 forming an upper plate generally corresponding to the maintaining a maximum shed height H 3 with respect to the sheet N 2 over a range of occupation angle centered around the value 180 °. This keeps the crowd F 3 open long enough to ensure a smooth passage of the rod 32.
  • the curve C 3 has a second plate C 3B in which the crowd height H 2 is kept substantially constant over a range of angle centered around an angle ⁇ equal to 900 °.
  • curves C 1 , C 2 are identical to those shown in FIG. figure 6 .
  • Curve C 3 has, in the vicinity of the sheet N 4, an inflection C ' 3A which corresponds to a momentary decrease in the opening angle of the crowd F 3 , that is to say the height of the crowd H 3 .
  • a zone of inflection C ' 3B is provided on the curve C 3 in the vicinity of the sheet N 3 , which corresponds to a momentary decrease in the opening angle of the crowd F 2 , that is, that is, the height H 2 .
  • ⁇ 1, ⁇ 2 and ⁇ 3 the opening angles of the crowds F 1 , F 2 and F 3 .
  • h 2 the height of the crowd F 2 , taken between the sheet N 2 and a point P 3 input of the sheet N 3 in a comb 40 belonging to the trade M.
  • h 3 the height of the crowd F 3 taken between the sheet N 2 and an entry point P 4 of the sheet N 4 in the comb 40.
  • the comb 40 is driven by a tilting movement represented by the double arrow A 3 , this comb moving away from the point of striking P F when the angle of work approaches in increasing of the value of 180 °.
  • the position of the figure 8 corresponds to a business angle of 110 °
  • the position of the figure 9 corresponds to a business angle of 180 °.
  • a smooth 3 must reach its position of maximum height, represented for the values of 110 ° and 830 ° to the figure 7 at the beginning of the insertion of the rods 31 and 32. Then it can go down slightly, which represent the zones of inflection C ' 3A and C' 3B , until the comb reaches its extreme rear position shown in FIG. the figure 9 . Then, the arm goes up to a second maximum high position it joins, at a business angle value of about 250 ° or 970 °, while the insertion of the rods ends.
  • the warp threads are individually controlled by the actuators 6, it is possible to assign different amplitudes or movement profiles to the stringers according to their position in the width of the fabric.
  • the profiles of the movement of the smooth edges of the fabric can, in the embodiment at the figure 6 , presenting plateau areas C ' 3 and C " 3 with an angular amplitude greater than that used for the rest of the tissue, in other words, the plateau areas C' 3 and C" 3 represented in FIG. figure 6 may be wider for the rails near the edges of the fabric, at least on the insertion side of the rods 31 and 32.
  • the second method shown in FIG. figure 7 it is the spacing between the zones of maximum heights of the curve C 3 which can be increased in the vicinity of this edge.
  • the invention has been shown in the case of a fabric which has, on a row, cut hairs and loops.
  • the height of the hairs is greater than that of the loops.
  • the rods 31 and 32 are or not provided with a cutting blade, such as the blade 35, at their respective ends.
  • the invention has been shown in the case where a support 33 carries two rods 31 and 32 and is moved on one side with respect to the crowds. Satisfactory results can also be obtained in a trade where two devices for setting up and removing the separate rods are used, for example each placed on one side of the craft.
  • the actuators 6 of the craft can generate more than four positions of the rails 3, that is to say more than three crowds, which makes it possible to envisage introducing three or more rods in three crowds adding to the background crowd F 1 of the fabric. It is then possible to obtain three heights of loops or different hairs.
  • the shedding device is a wire-in-line Jacquard consisting of independent actuators 6.
  • the invention also relates to a pinned velor loom associated with a shedding device consisting of independent actuators each connected to several smooth, by means of cords extending in parallel or through a frame such as that we know in the trades equipped with dobbies or cam mechanisms.

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

Claims (12)

  1. Webmaschine (M) für ein einschichtig hergestelltes ungeschnittenes Samtgewebe, wobei diese Maschine Mittel (11 - 13) zum Einführen von Schussfäden (2) in ein erstes Fach (F1) umfasst, das durch Kettfäden (11, 12) gebildet wird, dadurch gekennzeichnet, dass sie außerdem umfasst:
    - elektrische Betätigungselemente (6), die individuell (C11, C2i) gesteuert werden und geeignet sind, jeweils mindestens eine Litze (3) zur Führung eines Kettfadens in eine von mindestens vier Positionen (N1, N2, N3, N4) zu bringen, die mindestens drei Fächer (F1, F2, F3) von Kettfäden definieren und
    - Mittel (33, 34) zum gleichzeitigen Zuführen in jedes der Fächer (F2, F3), die andere sind, als das erste Fach (F1), einer Stange (31, 32) zur Führung eines Kettfadens für die Bildung von Schlaufen oder Flor.
  2. Webmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Betätigungselemente (6) geeignet sind, den Litzen (3) mindestens vier Positionen (N1, N2, N3, N4) mitzuteilen, die Fächer (F1, F2, F3) definieren, derart, dass der Abstand (D1, D2, D3) zwischen zwei dieser Positionen, senkrecht zur Zuführebene (Π) der Schussfäden genommen, unterschiedlich ist, zu dem Abstand, der zwischen zwei anderen dieser Positionen genommen wird.
  3. Webmaschine nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass mindestens eine (32) der Stangen mit einer Klinge (35) zum Schneiden der Schlaufen, die um sie gebildet werden, ausgerüstet ist.
  4. Webmaschine nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Betätigungselemente (6) geeignet sind, bestimmten Litzen mindestens ein Bewegungsprofil (C3) zu verleihen, derart dass der Abstand (h2, h3), der an einem Blatt (40) der Webmaschine (M) zwischen zwei Ketten (N3-N2, N4-N2) der Kettfäden genommen wird, während der Zuführung der Stangen (31, 32) konstant bleibt.
  5. Verfahren zum Weben von einschichtig hergestelltem ungeschnittenem Samt, bei dem man Schussfäden (2) in ein erstes Fach (F1) zuführt, das von Kettfäden (11, 12) gebildet wird, dadurch gekennzeichnet, dass es Schritte umfasst, die darin bestehen:
    - a) die Position der Kettfäden (13, 14, 15) mittels elektrischer Betätigungselemente (6) zu kontrollieren, die individuell (C11, C2i) gesteuert werden, wobei mindestens eine Führungslitze (3) eines Kettfadens in eine von mindestens vier Positionen (N1, N2, N3, N4) gebracht wird, die mindestens drei Fächer (F1, F2, F3) definieren und
    - b) eine Stange (31, 32) zur Führung von Kettfäden (13, 14, 15) für die Bildung von Schlaufen und Florfäden gleichzeitig in jedes der Fächer (F2, F3) einzuführen, die andere sind als das erste Fach (F1).
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Abstand (D1, D2, D3) zwischen zwei der mindestens vier Positionen (N1, N2, N3, N4), senkrecht zur Zuführungsebene (Π) der Schussfäden (2) genommen, unterschiedlich zu dem Abstand ist, der zwischen zwei anderen dieser Positionen genommen wird.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Abstände (D1, D2, D3) zwischen den Positionen (N1, N2, N3, N4), die jeweils die Fächer (F1, F2, F3) definieren, in die einerseits die Schussfäden (2) und andererseits die Stangen (31, 32) eingeführt werden, angepasst sind, einerseits an die Höhe der oder die Lanze(n) (11) zur Zuführung der Schussfäden und andererseits an die Höhe jeder der Stangen (31, 32), wobei diese Höhen senkrecht zur Ebene (Π) der Einführung der Schussfäden genommen werden.
  8. Verfahren nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass das Profil (C1, C2) des Fachs (F1), in das die Schussfäden (2) eingeführt werden, asymmetrisch ist und an die Geometrie der Lanze(n) (11) zur Zuführung der Schussfäden angepasst ist.
  9. Verfahren nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass das Profil (C3) der Bewegung von gewissen Litzen (3) mindestens ein oberes Plateau (C'3, C"3) umfasst, das im Wesentlichen dem Halten einer maximalen Fachhöhe (H3, H2) an einem Winkelort entspricht, der von der Bewegung der Welle der Webmaschine (10) vorgegeben ist.
  10. Verfahren nach einem beliebigen der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass das Bewegungsprofil (C3) von gewissen Litzen (3) mindestens derart ist, dass der Abstand (h2, h3) zwischen zwei Ketten (N3-N2, N4-N2) von Kettfäden, an einem Blatt (40) der Webmaschine genommen, im Wesentlichen während der Einführung der Stangen konstant bleibt.
  11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass das Bewegungsprofil (C3) von gewissen Litzen mindestens einen oberen Bereich umfasst, der eine Biegung (C'3, C"3) aufweist, die eine momentane Verringerung der Höhe des Fachs (H3, H2) synchron mit dem Durchlauf des Blatts in einem Bereich (θ = 180°) seines Weges entsprechend einem maximalen Abstand in Bezug auf den Anschlagpunkt (PF) induziert.
  12. Verfahren nach einem der Ansprüche 5 bis 11, dadurch gekennzeichnet, dass die Amplituden und/oder die Bewegungsprofile der Litzen (3) abhängig von ihrer Position in der Breite des Gewebes variabel sind.
EP08356057A 2007-03-30 2008-03-28 Webmaschine und Webverfahren für einschichtig hergestellten Schlaufenflorgewebe Active EP1975291B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0702336A FR2914321B1 (fr) 2007-03-30 2007-03-30 Metier a tisser et procede de tissage de velours epingle simple nappe

Publications (2)

Publication Number Publication Date
EP1975291A1 EP1975291A1 (de) 2008-10-01
EP1975291B1 true EP1975291B1 (de) 2010-07-07

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US (1) US7721768B2 (de)
EP (1) EP1975291B1 (de)
CN (1) CN101275331B (de)
DE (1) DE602008001676D1 (de)
FR (1) FR2914321B1 (de)

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NL1036870C2 (nl) * 2009-04-17 2010-10-19 Ten Cate Itex B V Inrichting voor het door middel van weven vervaardigen van een vezelmat.
CN105442140A (zh) * 2015-11-12 2016-03-30 丹阳市春明漳绒有限公司 漳绒织机自动提花装置及其专用综片组件
CN106702565B (zh) * 2016-12-09 2017-12-19 江苏宋和宋智能科技有限公司 一种纺机用电子综丝提花装置
WO2018201075A1 (en) * 2017-04-28 2018-11-01 unspun, Inc. Systems and methods for creating topographical woven fabric
EP3916140B1 (de) * 2020-05-26 2023-10-18 STÄUBLI BAYREUTH GmbH Greifer, verfahren zum einziehen eines schussfadens mit einem solchen greifer und webmaschine mit einem solchen greifer

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US2141152A (en) * 1938-01-21 1938-12-20 Collins & Aikman Corp Apparatus and method for the manufacture of pile fabrics
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FR2795434B1 (fr) * 1999-06-25 2001-08-10 Staubli Sa Ets Procede et dispositif de positionnement des fils de chaine d'un metier a tisser et metier a tisser equipe d'un tel dispositif
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Publication number Publication date
DE602008001676D1 (de) 2010-08-19
CN101275331B (zh) 2011-08-24
FR2914321B1 (fr) 2009-05-08
EP1975291A1 (de) 2008-10-01
US20080236700A1 (en) 2008-10-02
CN101275331A (zh) 2008-10-01
FR2914321A1 (fr) 2008-10-03
US7721768B2 (en) 2010-05-25

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