EP2531639B1 - Métier à tisser pour la production de tissus à effets trame supplémentaires - Google Patents

Métier à tisser pour la production de tissus à effets trame supplémentaires Download PDF

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Publication number
EP2531639B1
EP2531639B1 EP10803097.4A EP10803097A EP2531639B1 EP 2531639 B1 EP2531639 B1 EP 2531639B1 EP 10803097 A EP10803097 A EP 10803097A EP 2531639 B1 EP2531639 B1 EP 2531639B1
Authority
EP
European Patent Office
Prior art keywords
weft
displacement
shedding
guiding
threads
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.)
Not-in-force
Application number
EP10803097.4A
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German (de)
English (en)
Other versions
EP2531639A1 (fr
Inventor
Adnan Wahhoud
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
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Lindauer Dornier GmbH
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Filing date
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Publication of EP2531639A1 publication Critical patent/EP2531639A1/fr
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Publication of EP2531639B1 publication Critical patent/EP2531639B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D31/00—Lappet, swivel or other looms for forming embroidery-like decoration on fabrics
    • 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
    • D03C13/02—Shedding mechanisms not otherwise provided for with independent drive motors
    • D03C13/025—Shedding mechanisms not otherwise provided for with independent drive motors with independent frame drives
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D03C7/005—Combined leno and patterned shedding motion
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D03C7/06—Mechanisms having eyed needles for moving warp threads from side to side of other warp threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/002—With diagonal warps or wefts
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D21/00—Lappet- or swivel-woven fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms

Definitions

  • the present invention relates to a weaving machine for producing fabrics with additional weft effects.
  • Such a loom shows the device according to EP 0 957 191 ,
  • This device is characterized in that there are means for moving additional warp threads.
  • These means consist in curved bars, which are arranged on support beams, which are arranged downstream of the reed.
  • a disadvantage of this arrangement is that the weft insertion is hindered by the curved rods in the area in front of the reed.
  • a loom with devices for shifting additional warp threads - so-called diagonal threads - described in the weft direction consist in one embodiment in diagonal yarn displacement rollers, which by means of thread-like grooves, the diagonal yarns for each cycle of movement of the loom transport a Rietlücke further in the weft direction.
  • the EP 263,392 also describes Webblatt painen whose reed teeth can enter and disappear in the bevy of warp threads and diagonal threads. From this entry and exit each of the complete crowd of all warp threads and diagonal threads is affected.
  • the CH 27499 shows a device for moving warp yarns in the weft direction, which is arranged between the reed and the shed forming elements. With this device, however, additional threads or effect threads in the weft direction can only be displaced over such warp threads and tied off with a weft thread, all of which are pulled together with the respective effect thread into one and the same reed gap of the reed.
  • the object of the present invention is to provide a weaving machine for the production of fabrics with additional weft effects, in the effect threads, which are supplied in addition to the warp threads for each cycle of the weaving loom weave weaving dependent within wide limits variable in the weft direction over several retracted in different Rietlücken warp yarns away can be moved and tied with the weft threads, without being hindered by additional mechanical elements between reed and fabric edge of the weft insertion.
  • the arrangement should be suitable for air and rapier weaving machines and enable high web performance.
  • the use is to be possible for fabrics which have warp densities in the range of conventional clothing fabrics, but also for lattice-like fabrics with low warp density.
  • the method is characterized in that the effect thread emerges in the positioning above the weft thread to be introduced in the vertical direction from a reed gap formed by reed teeth unilaterally open and immersed in positioning below the next weft thread to be inserted into another Rietlücke.
  • Such formed Rietlücken arise when summarizing the reed teeth of a reed only at its lower end in a Rietbund, with a provided in conventional reeds upper Rietbund deleted.
  • the effect threads To set the effect threads with the registered weft threads, the effect threads must be brought alternately into the upper or lower shed during the weft insertion.
  • This positioning is accomplished by placing the guide means with the effect thread over one of the shedding elements - e.g. a heald - and thus by one of the shed drives a shedding machine in the direction of the shingles so vertically up and down driven.
  • guide means, displacement device and displacement drive are connected to one of the shedding elements.
  • a guide means of the effect yarn is moved in the vertical direction and in the weft direction in a plane which is arranged between the shed forming elements and the end position of the stop movement which is closer to the shed forming elements.
  • the desired additional impact effects can be achieved without disturbing the weft insertion by mechanical elements in the area in front of the reed.
  • the guide means on thread eyes with round, oval or slot-shaped opening through which the effect threads are guided.
  • the different opening shapes allow an adaptation to different cross sections of the effect threads used.
  • the guide means is designed so that it has a wedge-shaped or conically shaped tip facing the warp threads in the region below the thread eye.
  • the tip is supported according to the invention that in a vertical movement, the guide means the base warp threads apart such that adjacent warp threads each form a lane for the passage of the effect yarn when immersed in a Rietlücke. This avoids that the effect thread when entering and exiting undesirably intersects with adjacent warp threads.
  • An advantageous embodiment of the method also provides that several effect threads are moved and positioned simultaneously.
  • the effect thread is not positioned below the weft thread to be introduced during one or more movement cycles. There is then no bond between this effect thread and the subsequently entered weft instead.
  • the effect thread lies in the finished fabric over the registered weft thread.
  • the loom according to the invention according to the independent device claim includes any known types of shingles for driving shed elements, the vertical movement of which forms a shed bounded by warp threads. Furthermore, facilities for the entry of a weft thread in the shed in a weft direction and a Webblatt adopted for striking the weft thread to a fabric edge are present. Finally, this loom contains a displacement drive, which in Weft direction drives a displacement device to which according to the invention at least one guide means is provided, with which an effect thread can be moved in the weft direction and positioned vertically. In this case, different displacement paths of the effect thread in the weft direction for different movement cycles of the weaving machine can be predetermined via the displacement drive. Of course, a group of several guide means for a plurality of effect threads may also be attached to a displacement device so that they can be displaced synchronously with each other in the weft direction.
  • the effect threads which come into consideration here run essentially in the warp direction within the weaving machine and are pulled off from a thread supply on the back side of the weaving machine.
  • the warp direction refers to the course of the warp threads from the back to the front of the loom, regardless of the vertical position in which the respective threads are located.
  • a further feature of the invention is that the guide means is arranged in a plane which extends between the shedding elements and those of two end positions of a stop movement of the reed teeth, which is closer to the shedding elements. This is generally the position of the reeding device with reed teeth during weft insertion. Because of the described arrangement of the guide means in combination with the unilaterally open Rietlücken the weaving machine according to the invention, the production of fabrics with a variety of additional weft effects without disturbing the weft insertion by mechanical elements in the area between reed teeth and fabric edge possible. In this area, no guide means of effect threads dip into the shed formed for the weft insertion through the warp threads.
  • the guide means are designed needle-shaped with eyelets.
  • one or more guide means are attached at one end to a needle bar.
  • This needle bar together with a weft direction e.g. prism-shaped linear guide the displacement device, which is fastened together with an electric motor drive as a displacement drive on the front of a heald.
  • the displacement drive can be designed, for example, as a linear drive whose stator is integrated in the frame of the heald or in the prismatic linear guide.
  • other drives are conceivable; For example, drives with movement spindles or hydraulic or pneumatic drives that can be controlled by a control device of the loom.
  • the shedding machine that drives the heald may be, for example, an eccentric machine.
  • an eccentric machine by a rotation between the eccentrics for the basic weave of the warp threads and the eccentrics for effect binding, that is, for the vertical movement of the effect threads, a particularly favorable timing of shedding can be achieved.
  • the displacement device -z.B a needle bar with running in the weft direction linear guide - and to store the associated displacement drive in an additional vertical linear guide in the loom and connect with the strands of a jacquard machine such that the vertical movement of the effect threads can be controlled via the Jacquard machine.
  • the aforementioned embodiments have the advantage that no expensive additional gear, drives or controls must be used for driving the guide means in the vertical direction, because existing shedding elements and shingles drives can be used.
  • a further embodiment provides that the guide means is vertically driven by one of the shed forming elements by its own independent drive.
  • sequence of movements with respect to timing and with respect to the stroke of the guide means from the top to the lower compartment can be designed freely programmable in an advantageous manner.
  • one or more displacement actuators do not directly drive the displacement device, but via the shedding element - e.g. the heald, on the front side of the displacement device is arranged with the guide elements.
  • the displacement device may in this case contain elements with which a unique positioning of the guide means in the weft direction can be carried out during assembly and adjustment of the loom.
  • Shift drive can be assigned. It is also possible that a plurality of groups of guide means are present, to each of which a displacement device and a displacement drive are assigned. In addition, each of these groups or even each system of a plurality of such groups may each be connected to a different one of the shedding elements.
  • an advantageous embodiment of the invention provides that the reed teeth at their upper end lying at the exit of the Rietlücken one in the warp direction tapered -.
  • wedge-shaped tapering - have material cross-section. The apex of this taper should be near or at the edge of the reed teeth facing the guide means.
  • the risk that an effect thread gets caught on a reed tooth is also reduced by a chain in the smallest possible distance between the upper ends of the reed teeth and the tip of the guide means.
  • This distance is selected smaller than 3 mm in an advantageous embodiment; preferred is a distance that is less than 2 mm.
  • FIGS. 1 a, b and 2 show in a partial view a weaving machine with shed drives 9 for driving shed elements 4, by the vertical movement of which a warp shed 1 limited shed 1.1,1.2 is formed.
  • the specialist image drives 9 known to the person skilled in the art may, for example, consist of a group of levers and rods which are arranged below the shed forming elements 4 and which transmit the drive movements of a shed forming machine, not shown outside the machine frame, to the shed forming elements 4.
  • any other electromechanical, hydraulic or pneumatic devices can be used as shedding drives 9.
  • the shed forming elements 4 consist in the present example of known heddles with strands, through the Litzenaugen the warp threads 1 are performed.
  • weft thread 3 in the shed 1.1,1.2 in a weft direction 12 are present.
  • These may be devices for mechanical weft insertion by means of wipers or grippers or means for pneumatic weft insertion.
  • FIG. 2 shown is a device with grippers which are pushed in a known manner via not shown gear and two drive wheels from both sides of the loom in the shed.
  • the weft thread 3 is supplied in this embodiment of a shot coil on a Vorspuler and a color picker 19 one of the two grippers and transferred to the other gripper in the machine center.
  • the selection and presentation of the weft threads to a gripper for example, by means of a color selector 19.
  • Such designs are known to the expert for air and rapier.
  • a Webblatt adopted 10,7,7.1 for striking the weft thread 3 to a fabric edge 13 which consists of a Webblattlagerung 10 with reed teeth 7 and a Rietbund 7.1.
  • These reed teeth 7 form between one side upwardly open receiving spaces, so-called Rietlücken 14, so that threads that run in the direction of the warp threads 1 from back to front through the loom, dive from above into these Rietlücken 14 and thus of the reed teeth 7 in the weft direction 12 can be performed.
  • weft direction 12 both opposing directions which are parallel to the weft insertion direction are meant.
  • reed teeth 7 are attached via the reed collar 7.1 to the Webblattlagerung 10 and perform together with this at each cycle of the weaving machine a stop movement 15 - 15.1.
  • a displacement device 5 with a prismatic guide mounted on the frame of the heald according to FIG. 2 three guide means 11 are mounted, with which three effect threads 2 can be moved in the weft direction 12 by the path A.
  • displacement drive 6 which drives the displacement device 5
  • different displacement paths A of the effect threads 2 can be predetermined for different movement cycles of the weaving machine.
  • the use of an electromotive, freely programmable linear drive as displacement drive 6 makes sense. It can thus be achieved according to the invention that the displacement path A is freely programmable via a control device 8 of the weaving machine and the displacement drive 6 for each movement cycle of the weaving machine.
  • displacement device 5 and displacement drive 6 are connected to one of the shedding elements 4 and are moved vertically together with the latter.
  • the shed forming element 4 is drivable in this case by one of the shingraft drives 9 described above a shedding machine, not shown.
  • other types of linear mechanical guidance of elements may be provided instead of the prismatic displacement device 5.
  • FIG. 1 is further seen that the guide means 11 is movable in a plane which extends between the shedding elements 4 and those of two end positions of a stop movement 15 - 15.1 of the reed teeth 7, which is closer to the shed forming elements 4; this is the position of reed teeth 7 during weft insertion.
  • a mechanical binding cartridge can consist of a suitable choice of eccentrics of a drive mechanism - eg an eccentric machine - or in a punched card a card-controlled dobby.
  • Modern shedding machines are known to be controlled by electronically generated and stored in the control device 8 of the loom pattern data.
  • FIGS. 1 A and 2 also show that the effect threads 2 are withdrawn from a thread supply 16 in the region of the rear side of the weaving machine and fed to the guide means 11 by means of a deflection device 17 via the shedding elements 4.
  • a resilient element in the thread path can be arranged. In this area, the arrangement of a thread monitor, not shown, makes sense, which turns off the loom when breaking an effect thread 2.
  • FIGS. 1a . b show guide means 11 which are in the form of needles with eyelets 18 and a needle point. One or more of these needles are attached at one end to a needle bar. This needle bar forms the displacement device 5 together with a linear guide.
  • the needle-shaped guide means 11 and 11.2 also have suture eyelets 18 with round 18, oval 18.2 or not shown slot-shaped opening through which the effect threads 2 are guided.
  • the different opening shapes allow adaptation to different cross sections of the effect threads 2 used. Fine or coarse fibers or filament yarns in the range from 11 tex to 10 000 tex can be used. The use of electrically conductive threads or optical fibers as the effect thread 2 is conceivable, which still a wealth of other effects can be generated with such fabrics.
  • the needle-shaped guide means 11 extends wedge-shaped in the region of a tip facing the warp threads 1;
  • a conical tip is also conceivable.
  • the cone-shaped or tapering region begins at a distance C from the thread eyelet 18.
  • FIG. 1b is also visible that the upper ends of the reed teeth 7 in the vertical direction have a distance D from the warp threads of the upper compartment 1.1 at the point at which the guide means 11 crosses the warp threads of the upper compartment 1.1 in its vertical movement.
  • C, D and E depend on the warp density and the cross-section of the effect threads 2 used.
  • C is chosen to be greater than or equal to D.
  • the distance E should be as small as just allow the dimensions of the elements involved and the precision of the stop motion 15- 15.1 without collision.
  • FIG. 3 shows diagrammatically the movements of some elements of a loom, which performs the method according to the invention. Shown are two cycles of movement of the loom over a total of 720 angular degrees Y of a weaving machine main shaft.
  • the curves F show the stroke of two opposing shedding elements 4, each of which moves a bevy of warp threads into the upper shed 1.1 or lower shed 1.2.
  • the weft insertion takes place in the phase in which the shed 1.1,1.2 is open.
  • the curve H represents the stroke of a guide means 11. This is also the stroke which is performed by the shedding element 4, with which the guide means 11 is moved vertically.
  • shedding machine and shingles 9 are designed so that for each shed 4 individually the vertical position in the loom and the size of the stroke H and F can be adjusted.
  • the timing between the movements F and H and the movement Y of the loom by the operator in the direction of travel can also be shifted individually.
  • the stop movement of the Webblatt worn 10,7,7.1 is designated, which takes place between two weft entries.
  • FIGS. 1 and 2 show various fabric patterns with additional weft effects, preferably with the embodiments of the loom according to the invention according to the FIGS. 1 and 2 can be produced.
  • FIG. 5 shows a loom with all the features of FIGS. 1 and 2 in which, however, the device for vertical movement of the guide means 11 is formed by a shedding element 4, which is driven by its own independent drive 9.5.
  • a shedding element 4 which is driven by its own independent drive 9.5.
  • any known to the expert electromechanical, pneumatic or hydraulic drives can be used.
  • FIG. 6 shows the execution according to FIG. 5 in a plan view, in which it can be seen that the displacement device 5 via the shedding element 4 by means of a Displacement drive 6.6 in the weft direction 12 is driven.
  • the displacement drive 6.6 can be mounted on the machine frame.
  • the compartmentalized element 4 - in the present case a weaving shank - is displaced in the weft direction together with the displacement devices 5 mounted thereon.
  • FIGS. 7 and 8th show an embodiment according to FIG. 6 , but with two groups of guide means 11, 11.7 shifting devices 5, 5.7 and displacement drives 6.6, 6.7, wherein each of the groups is connected to another of the shedding elements 4.
  • the planes in which each group of guide means moves can be arranged one behind the other in the warp direction so that the respective guide means 11 of one group can be moved unhindered by the guide means 11.7 of another group in the weft direction 12.
  • the distance E in this case refers to the foremost, the reed teeth 7 nearest level of movement.
  • the groups of guide means 11, 11.7 can also be so arranged offset in the weft direction that all guide means 11, 11.7 in the same plane between shedding means 4 and rear end position of the stop movement 15 - move 15.1 (not shown).

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

Claims (4)

  1. Machine à tisser comportant des éléments de formation de la foule (4) et comportant des mécanismes de formation de la foule (9) qui permettent d'actionner verticalement les éléments de formation de la foule (4), de manière à pouvoir former une foule (1.1, 1.2) délimitée par des fils de chaîne (1), et, en outre, comportant des systèmes pour l'insertion d'un fil de trame (3) dans la foule (1.1, 1.2) dans une direction de la trame (12), comportant un système de peigne (10, 7, 7.1) pour la frappe du fil de trame (3) contre un bord (13) du tissu au moyen d'un mouvement de frappe (15, 15.1) comportant deux positions finales,
    et comportant un mécanisme de déplacement (6) qui actionne un dispositif de déplacement (5) dans la direction de la trame (12),
    et comportant un moyen de guidage (11) par lequel le fil d'effet peut être déplacé dans la direction de la trame (12) et peut être positionné verticalement, ledit moyen de guidage (11) étant réalisé en forme d'aiguille muni d'un chas (18),
    et différentes trajectoires de déplacement (A) du fil d'effet (2) dans la direction de la trame (12) pouvant être prédéfinies par le mécanisme de déplacement (6) pour différents cycles de mouvements de la machine à tisser ;
    et comportant un élément de formation de la foule (4), par l'intermédiaire duquel le moyen de guidage (11) peut être actionné verticalement par l'un des mécanismes de formation de la foule (9) d'une machine de formation de la foule ou par son propre mécanisme (9.5) indépendant,
    et comportant des dents de peigne (7), attachées au système de peigne (10, 7, 7.1) et formant, sur un côté, des entredents (14) ouverts vers le haut, dans lesquels le fil d'effet (2) peut être rentré et sorti,
    ledit moyen de guidage (11) étant disposé dans un plan situé entre les éléments de formation de la foule (4) et l'une des deux positions finales d'un mouvement de frappe (15, 15.1) des dents de peigne (7), à savoir la position plus proche des éléments de formation de la foule (4),
    caractérisée
    en ce que ledit moyen de guidage (11) est fixé par une extrémité à une barre à aiguilles, et
    en ce que ladite barre à aiguilles forme, conjointement avec un guidage linéaire orienté dans la direction de la trame (12), le dispositif de déplacement (5) qui, conjointement avec un système d'entraînement à moteur électrique ou un système d'entraînement pneumatique pouvant être actionné par un dispositif de commande (8) de la machine à tisser, est fixé en tant que mécanisme de déplacement (6) sur la face avant d'un élément de formation de la foule (4) réalisé sous la forme d'un cadre.
  2. Machine à tisser selon la revendication 1, caractérisée en ce que le moyen de guidage (11) est réalisé de telle sorte que, dans la zone en dessous du chas (18), il possède une pointe conique ou cunéiforme orientée vers les fils de chaîne (1), laquelle fait en sorte que, pendant un mouvement vertical du moyen de guidage (11), les fils de chaîne (1) sont écartés les uns des autres de telle sorte que des fils de chaîne (1) adjacents forment respectivement une voie pour le passage du fil d'effet (2) lorsqu'il rentre dans un entredent (14).
  3. Machine à tisser selon la revendication 1 ou 2, caractérisée en ce que les dents de peigne (7), vers leur extrémité supérieure, située à la sortie des entredents (14), comporte une section transversale s'effilant dans la direction de la chaîne, la pointe de ladite section effilée étant située à proximité ou sur le bord des dents de peigne (7), lequel est orienté vers les éléments de formation de la foule (4).
  4. Machine à tisser selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la distance (E) dans la direction de la chaîne est inférieure à 3 mm entre les extrémités supérieures des dents de peigne (7) et la pointe du moyen de guidage (11).
EP10803097.4A 2010-02-06 2010-12-29 Métier à tisser pour la production de tissus à effets trame supplémentaires Not-in-force EP2531639B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010007048A DE102010007048A1 (de) 2010-02-06 2010-02-06 Verfahren und Webmaschine zur Herstellung von Geweben mit Zusatzschusseffekten
PCT/EP2010/070868 WO2011095262A1 (fr) 2010-02-06 2010-12-29 Procédé et métier à tisser pour la production de tissus à effets trame supplémentaires

Publications (2)

Publication Number Publication Date
EP2531639A1 EP2531639A1 (fr) 2012-12-12
EP2531639B1 true EP2531639B1 (fr) 2013-07-31

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Application Number Title Priority Date Filing Date
EP10803097.4A Not-in-force EP2531639B1 (fr) 2010-02-06 2010-12-29 Métier à tisser pour la production de tissus à effets trame supplémentaires

Country Status (5)

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EP (1) EP2531639B1 (fr)
JP (1) JP5450836B2 (fr)
CN (1) CN102844482B (fr)
DE (1) DE102010007048A1 (fr)
WO (1) WO2011095262A1 (fr)

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DE102010034969B3 (de) 2010-08-20 2011-11-03 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Webblatt und Webmaschine zur Webmusterbildung bei Geweben mit Zusatzmustereffekten
DE102012200835B3 (de) 2012-01-20 2013-03-14 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Webmaschine mit einer Vorrichtung zur Bildung von Zusatzschusseffekten
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CN102844482B (zh) 2015-09-23
CN102844482A (zh) 2012-12-26
WO2011095262A1 (fr) 2011-08-11
JP5450836B2 (ja) 2014-03-26
DE102010007048A1 (de) 2011-08-11
EP2531639A1 (fr) 2012-12-12

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