EP1923495B1 - Verfahren zur Verarbeitung eines Schussfadenseintragsfehlers in einer Webmachine - Google Patents

Verfahren zur Verarbeitung eines Schussfadenseintragsfehlers in einer Webmachine Download PDF

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Publication number
EP1923495B1
EP1923495B1 EP20070356160 EP07356160A EP1923495B1 EP 1923495 B1 EP1923495 B1 EP 1923495B1 EP 20070356160 EP20070356160 EP 20070356160 EP 07356160 A EP07356160 A EP 07356160A EP 1923495 B1 EP1923495 B1 EP 1923495B1
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EP
European Patent Office
Prior art keywords
loom
shed
pick
weft
detected
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 - Fee Related
Application number
EP20070356160
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English (en)
French (fr)
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EP1923495A1 (de
Inventor
Martin Burkert
Dieter Pietzonka
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Schoenherr Textilmaschinenbau GmbH
SCHONHERR TEXTILMASCHINENBAU GmbH
Original Assignee
Schoenherr Textilmaschinenbau GmbH
SCHONHERR TEXTILMASCHINENBAU GmbH
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Publication of EP1923495A1 publication Critical patent/EP1923495A1/de
Application granted granted Critical
Publication of EP1923495B1 publication Critical patent/EP1923495B1/de
Expired - Fee Related 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • 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
    • D03D47/18—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 two weft inserters meeting at or near the middle of the shed and transferring the weft from one to the other
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/06—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping
    • D03D51/08—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping stopping at definite point in weaving cycle, or moving to such point after stopping
    • D03D51/085—Extraction of defective weft

Definitions

  • the invention relates to a method for processing a weft insertion defect in a loom.
  • the untransmitted weft yarn may have remained in the claw of the corresponding donor lance that emerges from the shed on the weft insertion side forming a loop which is defeated by the comb against the fabric already woven and then reinserted into a crowd open differently.
  • To restart the loom it is necessary to manually remove the loop of woven weft threads, which imposes to proceed by a step-by-step search which must reproduce in reverse each of the openings of the crowd where the non-transmitted weft thread is captured .
  • the procedure processing a insertion defect of a weft yarn is therefore long and complex. It also relies on the know-how and concentration of the weaver who may forget part of the loop or restart the trade in a crowd configuration that is not the one for which the defect appeared, which creates faults in the fabric.
  • the invention more particularly intends to remedy by proposing a new method for processing a frame insertion defect by which the processing of a frame insertion defect can be simplified at the same time. and made reliable.
  • Steps b) and c) are simultaneous and followed by step d).
  • the manual operations to be performed by the weaver in the event of detection of a frame insertion fault consist essentially, after the automatic and effective stop of the loom, to cut and remove the weft thread defective in the crowd without having to carry out a step-by-step search, since the weft thread was only inserted once, during the defective pick, even though the craft continued to work for several picks to reach its shutdown configuration which is a configuration in which the weaver can directly restart the business, without having to re-configure it.
  • the expression "insertion of a frame” corresponds to the expression “insertion of a weft thread” and the expression “insertion defect of the weft” signifies that a defect is detected on the frame in the the moment of the cycle following the theoretical transfer of the weft thread from the donor lance to the pick-up, which implies that a weft thread has been incompletely or incorrectly inserted into the corresponding shed.
  • the trade M represented at figure 1 is intended for the formation of two plies N 1 and N 2 of fabric, for example two carpets T 1 , T 2 woven simultaneously and separated from each other by a cut-off knife 1 carried by a carriage 2 and disposed in downstream of two points P 1 , P 2 to which converge respectively two crowds F 1 , F 2 defined by warp son 4 whose vertical movement is controlled by smooth 3a controlled by a harness 3b, itself actuated by Jacquard J.
  • Other warp yarns 4 ' are controlled in vertical displacement by heddles 3c mounted on heald frames themselves driven by a dobby R.
  • the heald frames can be driven by a mechanical with cams or by electric actuators.
  • smooth 3a can be driven by electric actuators.
  • the belts T 1 and T 2 are respectively directed to winding drums 7 1 and 7 2 , which are each rotated about a Y axis 71 or Y 72 , perpendicular to the direction of advance of the warp son 4 and 4 'to stretch the portions of carpets T 1 and T 2 already woven.
  • the drums 7 1 and 7 2 thus participate in the advance of the fabrics being woven on the trade M.
  • the weft threads 5 1 and 5 2 intended to constitute, with the corresponding warp threads, the plies N 1 and N 2 are respectively inserted into the crowds F 1 and F 2 by means of two donor lances 11 and 12 belonging to a weft insertion device 10 and each comprising a head or claw 111, respectively 121, on which can be hung a weft thread 5 1 or 5 2 .
  • Each lance 11 or 12 also comprises a ribbon 112, respectively 122, for driving the corresponding claw in the direction of two axes Y 1 , respectively Y 2 , parallel to each other and perpendicular to the warp son 4 and 4 'and the plane of the figure 1 .
  • An assembly 13 movable pivotally about an axis Y 3 parallel to the axes Y 1 and Y 2 comprises a leaf 131 and a comb 132 mounted on the leaf 131 and driven by the latter in alternating rotation about the axis Y 3 .
  • the comb 132 is intended to be brought alternately in abutment against the points P 1 and P 2 , when the leaf 131 has been pivoted about the axis Y 3 , with respect to the position of the figure 1 by means not shown and known per se.
  • Two weft thread cutting devices are mounted on the leaf 131 and are intended to cut each a weft thread when the lances 11 and 12 emerge from the crowds F 1 and F 2 after having given their respective weft yarn to a corresponding latch which is not represented on the Figures 1 to 4 .
  • Two weft presentation devices for the lances 11 and 12 are also mounted on the leaf 131 and intended to allow the attachment of a weft thread on the claws 111 and 112, just before they enter the claws 111 and 112. the corresponding crowd F 1 or F 2 .
  • One of these presentation devices, the one used in conjunction with the lance 12 is shown schematically in FIG. figure 4 with the reference 32.
  • toothed wheels 21 and 22 are rotatably mounted each about an axis A 21 or A 22 fixed relative to the frame B of the craft, the axes A 21 and A 22 can be merged, as in the example represented, or offset from each other.
  • the external teeth 211 and 221 of the wheels 21 and 22 engrain in corresponding openings respectively provided in the ribbons 112 and 122, which allows, by controlling the rotation of the wheels 21 and 22 around their axes A 21 and A 22 to move the claws 111 and 121 in the crowds F 1 and F 2 respectively along the axes Y 1 and Y 2 .
  • each lance 11 and 12 is inserted into the corresponding mob F 1 or F 2 by driving a corresponding weft thread 5 1 or 5 2 which has been presented to it by the corresponding device 32, and then its thread Weft 5 1 or 5 2 is transmitted to the lading lance in the center of the upper and finally the donor lance leaves the shed, vacuum after which each weft thread is cut by a device 42.
  • a detector 61, respectively 62, is associated with each weft thread 5 1 , respectively 2 , between the corresponding frame pre-emitter, one of which is visible at the figure 4 with the reference 72, and the claw 111 or 121 of the corresponding lance.
  • a wire guide 74 makes it possible to position the weft thread 2 attached to the device 32 on the path of the claw 121.
  • the detectors 61 and 62 may be of the type with a ceramic eyelet or of another known type and mark a defect. in the speed, tension or inclination of the corresponding weft yarn, which is the case when a weft insertion error occurs.
  • one of the detectors 61 or 62 detects a frame insertion defect, whereas the corresponding weft thread should have been transferred from a donor lance to the corresponding launcher, it transmits to a central unit 100 control of the trade M, a signal S 1 , respectively S 2 , meaning that there is a risk that the weft wire is hooked to the donor lance.
  • step i) the stopping of the cutting device which comprises the knife 1 is optional insofar as, if the advance of the fabric is interrupted, the cutting device can operate in a vacuum.
  • step ii) the unit 100 controls the devices 32 and 42 and the corresponding devices for the lance 11, so that no weft thread is cut or presented in the vicinity of the input path claws 111 and 112 in the crowds F 1 and F 2 until the actual stop of the craft.
  • weft release devices are independently operated for open each of the claws 111 and 112 and expel the weft son or we still clinging to the claws in question.
  • a claw opening finger 81, 82 respectively is disposed on the loom M in the vicinity of the retracted position of each of the claws 111 and 121 outside the corresponding shed F 1 or F 2 .
  • the finger 82 is movable along an axis Y 82 , parallel to the axis Y 2 , between the position of the figure 4 corresponding to the normal operation of the craft and the position of the figure 3 corresponding to the case where a frame insertion defect has been detected in the crowd opening preceding the return of the lance in the retracted configuration shown on the figures 3 and 4 .
  • the finger 81 is movable along an axis Y 81 parallel to the axis Y 1 , between positions similar to those shown in FIGS. figures 3 and 4 for the finger 82.
  • the finger 82 does not interact with the claw 121 of the lance 12. The finger 82 is then released from the claw 121.
  • the claw 121 comprises a base portion 123 rigidly fixed to the ribbon 122 by means of screws 124, as well as a movable portion 125 articulated on the portion 123 about an axis Z 2 perpendicular to the axis Y 2 .
  • a spring 126 exerts on the portion 125 a force E 2 which tends to tighten a front portion 125a of the portion 125 against a corresponding portion 123a of the portion 123, so as to pinch the weft thread 2 at the next introduction of claw 121 in the crowd F 2 .
  • the unit 100 actuates a jack 92, whose rod 921 is secured to the finger 82 by means of a carriage 922 which slides along a rail 923 whose longitudinal axis is parallel to the Y 2 and Y 82 axes.
  • the jack 92 is actuated, so that the finger 82 is moved towards the claw 121 until a surface 821 of this finger formed at the front thereof and inclined relative to the Y axis 82 bears against a corresponding surface 125b of the portion 125.
  • the further movement finger 82 in the direction of the arrow D 2 to the figure 3 has the effect of pushing the piece 125 against the force E 2 , so that the portions 125a and 123a are spaced apart from each other and that the weft thread 2 is no longer pinched .
  • the finger 82 can be moved in the direction of the crowd as soon as the insertion fault frame is detected, that is to say before the return of the lance in the retracted position. It is then the displacement of the claw to its retracted position out of the crowd that induces the spacing of portions 123a and 125a, because of the interaction of surfaces 125b and 821.
  • a guide 127 is attached to the claw 121 in the vicinity of the surface 125b.
  • the guide 127 prevents the finger 82 from bending when it interacts with the part 125.
  • This guide is optional. It can be omitted if the finger 82 is made of a rigid material.
  • a nozzle 102 is disposed on the loom, in the vicinity of the claw 121, when it is in the retracted configuration of the Figures 2 to 4 and, when the finger 82 is moved to open the claw 121 as explained above, an air jet J 2 is directed by the nozzle 102 towards the front of the clamp 121, which has the effect of driving out weft yarn 5 2 of the gap between portions 123a and 125a.
  • the jet of air J 2 from the nozzle 102 thus completes the action of the finger 82 of release of the wire 2 by expelling the wire out of the claw 121, before it is again introduced into the crowd F 2 while the air injection J 2 is stopped.
  • the release finger 81 allows to open, this finger being controlled by a jack 91 and moved along an axis Y 81 parallel to the axis Y 1 , while a nozzle 101 similar to the nozzle 102 is disposed in the vicinity of the claw 111 when the this is in retracted configuration shown in the figure 2 .
  • each nozzle 101 or 102 may be provided to draw air in the vicinity of the portions 123a and 125a of the claw, which also makes it possible to disengage the weft thread 2 from the claw.
  • two nozzles may be provided in the vicinity of each claw 111 or 121 in retracted configuration, in place of a nozzle 101 or 102.
  • a first nozzle 101A or 102A blows or sucks in the direction of the opening of the nozzle. claw, that is to say in the direction of the crowd, when the claw is open, this in order to expel the weft wire out of the claw.
  • the first nozzle stops and a second nozzle 101B or 102B blows or draws air in a direction perpendicular to the direction Y 1 or Y 2 , to the stop effective in order to keep the released wire out of the way of the spears.
  • the fingers 81 and 82 are represented in the retracted position, which corresponds to the position of the figure 4 of the first embodiment. They are movable in translation along the Y 81 and Y 82 directions to reach a position similar to that of the figures 2 and 3 where they operate the claws 111 and 121 at the opening, as in the first embodiment.
  • the unit 100 controls the cylinders 91 and 92 simultaneously and simultaneously injects air through the nozzles 101 and 102 independently of the lance for which a frame insertion defect has been detected.
  • a single cylinder controls both the fingers 81 and 82 and that a single nozzle, elongate to cover the different insertion levels, is used to expel the weft son out of claws formed by the claws.
  • the claw 111 or 121 is reinserted into the crowd, while the finger 81 or 82 is still in the advanced position represented at the figure 3 .
  • the movement of the claw towards the crowd has the effect of sliding the surface 125b, or equivalent, along the inclined surface 821, or equivalent, which allows to close the claw 111 or 121.
  • the finger 81 or 82 is then retracted to its position of the figure 4 , in masked time.
  • the craft When the insertion of the lances with weft thread has been deactivated as indicated above, and even when the complete stop of the loom has been commanded by the unit 100 after the signal S 1 or S 2 has reached it, the craft continues to operate forward because braking to a complete stop in practice takes one or two picks or more.
  • the unit 100 controls the trade until reaching a stopping position immediately preceding the insertion of the weft in a configuration of armor identical to that of the pick in which the frame insertion fault has been detected.
  • Stop position as soon as possible Electric actuator Immediate reconfiguration by changing the setpoint Before inserting the pick after braking Dobby Passage at least through a craft angular zone in which an electronic position control of each warp yarn is effectively transmitted to the shedding device and the angular trade zone in which this control is mechanically followed by effect
  • the expression "before insertion” means that one is placed in a configuration where the lances are retracted out of the crowd.
  • the detection of the defect occurs after the transfer of the son between lances, so after the electronic control and / or the mechanical selection of the next pick.
  • the re-configuration of the armor therefore requires a new electronic control zone that will control the position of the warp, a position that will be effective only for the pick according to the mechanical selection zone in which the electronic control takes effect.
  • the stopping of the trade will therefore be done at the earliest before the insertion of the N + 2 pick if the defect has been detected for the N pick.
  • the electronic control of the pick is done in the d-2 pick. If a fault is detected in picking N but the braking position is calculated to occur during picking N + 2, the loom continues its movement through the control zone of the opening of the crowd of the pick N + 2, which is performed in N duit, which it reconfigures as the opening of the crowd of the N pick.
  • the pick N + 1 then opens as it had been configured during the passage of the loom in the electronic control zone preceding the fault detection.
  • the craft then arrives in the electronic control zone of the crowd of the N + 3 pick, which is carried out in N + 1 pick, the crowd of the N + 3 pick is also reconfigured in the same manner as the default pick.
  • crowd of the N + 2 duit opens, as commanded during the N duit, either with a crowd opening identical to the default duit.
  • the craft then reaches its braking position. Between the braking position and the stopping position of the loom before insertion of the reconfigured N + 3 pick, the loom must pass through a new electronic control zone controlling the N + 4 pick crowd.
  • the crowd here commanded corresponds to the crowd that would have followed the N default picking if there had been no defect, ie the crowd opening of the N + 1 pick.
  • the stopping of the trade before the insertion of the pickup N + 3 takes place while the son will open in the same crowd configuration as the default pick and this crowd configuration will be followed by the same armor sequence that the duit default since the N + 1 configuration was ordered for the next pick.
  • the weaver has not, contrary to known practice, to correct the configuration of the loom or to order stepping backwards since the loom was stopped in a configuration allowing the removal of the non-transmitted weft yarn which is not trapped in a part of the already woven fabric or in a crowd open differently, but only struck by the comb.
  • the weaver cuts and removes the defective weft yarn from the shed and then manually introduces a new weft yarn into the claw of the corresponding donor lance, before simply pressing the re-start button of the loom.
  • the unit 100 then commands the loom to resume its cycle by inserting the lance in question with the new weft thread in a crowd pattern identical to the crowd of the pick where the fault occurred.
  • the other lances are then inserted empty in the crowd because the weft son of these lances have already been correctly inserted during the duite during which the fault occurred and because the weft presentation devices, which were inhibited until the actual stoppage of the trade, did not seize weft yarn and therefore do not present thread during the resumption of the cycle.
  • This mode of operation is compatible with the resumption of the normal cycle after the flap and before the insertion of the frame.
  • the weft insertion device comprises, in the form of fingers 81, 82 and nozzles 101 and 102, reliable, robust and economical materials. Restarting the trade is much faster than with state of the art equipment and a large number of manual steps are removed, which improves both the speed of the intervention and its reliability.
  • FIGS. 5A to 5E we consider the movements of the claw 121 of the donor lance 12 and the corresponding movements of the claw 121 'of a gripper 12'.
  • the donor lance 12 equipped with the weft thread 2 enters the shed F 2 to reach the claw 121 'of the latch.
  • the weft thread 2 is then transferred to the claw 121 'and then the two claws emerge from the crowd.
  • the cutting device 42 is activated to cut the wire 2 and the device 32 is activated to replenish the lance 12 for its next insertion.
  • a pick N is then considered during which a fault is detected.
  • the claws 121 and 121 progress one towards on the other and, in the configuration of the Figure 5B , the claws move away from each other, while the weft thread 2 2 is hooked on the claw 121, which indicates the detector 62 associated with the signal S 2 .
  • the claw 121 emerges from the crowd F 2 , that is to say reaches beyond the loom width of the loom as shown in FIG.
  • the stop of the loom being controlled by the unit 100, it is gradually braked and the movement of the loom continues during the N + 1 duit, which represents the Figures 5D and 5E .
  • the braking time is compatible, it is possible to stop the reconfigured trade after the empty insertion of the N + 1 pick to proceed to the withdrawal of the loop 2A , which represents the arrow of withdrawal R 2 at the figure 5E .
  • Cutting devices 42 and presentation 32 remain inhibited until the actual stop of the craft.
  • the weft release device is activated only at the first return of the lances to their retracted position out of the shed after the pick for which the defect has been detected.
  • the crowd-forming mechanism comprises a four-ratio camming mechanism
  • the operation of the Figures 5D and 5E is reproduced on two N + 2 and N + 3 picks.
  • the end of the N + 3 duet we went through all the armor and the craft can be stopped in an identical weave configuration to the N pick and the weft loop 2A can be removed.
  • the number of picks between the detection of the frame insertion defect and the stopping of the loom for the withdrawal of the loop 2A depends on the type (s) of crowd forming devices used and the inertia of moving parts.
  • the weaver can choose to mount this yarn in the corresponding presentation device 32.
  • the stopping of the loom can be intentionally provoked while the donor lances are out of the crowd and before the thunderbolt preceding the insertion of the replacement weft thread from that of the defective pick. , provided that the stop occurs between two picks whose crowd patterns are identical.
  • This makes it possible to beat once less the loop of weft thread corresponding to the loop 2A on the Figures 5D and 5E and, consequently, to release it more easily.
  • the normal weaving cycle is preceded by a restart cycle which inhibits the cutting and presentation device of the weaving machine. weft for each spear at the first strike of the flapper following this restart.
  • the weaver can be asked to place a new weft yarn directly on the edge of the web associated with the defective weft yarn.
  • the presentation and cutting device is inhibited only for the correctly inserted frame.
  • the new replacement weft yarn is brought back to the spear path and reinserted to replace the defective yarn.
  • the invention has been shown in the case of a carpet forming loom with two weft insertion levels. However, it is applicable to a loom with more than two weft insert levels, for example three or four.
  • the number of weft son release devices 81, 82, ..., 101, 102, ... is adapted to the number of donor lances 11, 12, ...

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Claims (18)

  1. Verfahren zur Behandlung eines Eintragfehlers eines Schussfadens in einer Webmaschine für Teppiche, die umfasst:
    - mindestens eine Fachbildungsvorrichtung (J, R),
    - mindestens eine Vorrichtung (10) für den Eintrag eines Schussfadens in mindestens zwei Doppelfächer (F1, F2), wobei diese Vorrichtung mindestens zwei Geberlanzen (11, 12) umfasst, die jede mit einem Greifer (111, 121, 131') zum Befestigen eines Schussfadens (51, 52) versehen ist,
    - Mittel (61, 62) zum Detektieren eines Schussfadeneintragfehlers, die jeder Geberlanze zugeordnet sind,
    - eine Vorrichtung (32) zur Darbietung des Schussfadens, die jeder Geberlanze zugeordnet ist,
    - eine Vorrichtung (42) zum Abschneiden des Schussfadens, die jeder Geberlanze zugeordnet ist,
    wobei man, nachdem ein Schussfadeneintragfehler durch die Mittel (61, 62) zum Detektieren festgestellt wurde, den Betrieb der Darbietungsvorrichtungen (32) und der Schneidvorrichtungen (42) des Schussfadens hemmt, dadurch gekennzeichnet, dass es die Schritte umfasst, die darin bestehen:
    b) - Freigeben des Schussfadens (51, 52), der an der Geberlanze (11, 12) befestigt ist, für die ein Schussfadenfehler detektiert wurde, bei dem ersten Zurückkommen der Geberlanze(n) (11, 12) aus dem Fach,
    c) - Verfolgen der Bewegung der Webmaschine (M) im Vorwärtslauf, indem sie gebremst wird, ohne einen Schussfaden einzutragen, bis zum Halt der Webmaschine in einer Position, in der die Geberlanzen (11, 12) außerhalb des Fachs (F1, F2) sind und wo das Fach geöffnet werden kann, mit einer Armurenkonfiguration, identisch zu der, bei der der Schussfadeneintragsfehler detektiert wurde,
    d) - Herausziehen (R2) des defekten Schussfadens (52A) aus dem Fach.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass es einen Schritt vor den Schritten b) bis d) umfasst, der darin besteht:
    a) - Hemmen des Betriebs der Mittel (71, 72) zum Vorschub des Gewebes (T1, T2).
  3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Halteposition der Webmaschine in Bezug auf den Schuss, für den ein Fehler detektiert wurde, bestimmt wird, abhängig von:
    - Konfigurationsrücksetzung des Fachs, die von dem Typ der an der Webmaschine verwendeten Fachbildungsvorrichtung abhängt,
    - einer Position beim Ende des Bremsens, in die die Trägheit der Bewegungsteile der Webmaschine die Maschine zum Zeitpunkt des Bremsens bringt, und
    - den mit der Qualität des Gewebes verbundenen Bedingungen.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in dem Fall, in dem eine Fachbildungsvorrichtung der Maschine elektrische Betätigungselemente zur Steuerung der Litzen umfasst, man das Fach, mindestens für den Schuss, während dem der Schussfaden in das Fach wieder eingeführt wird, rekonfiguriert, indem der Sollwert jedes Betätigungselements modifiziert wird und man bei dem Schritt c) die Bewegung der Webmaschine über mindestens einen Schuss verfolgt.
  5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in dem Fall, in dem die Fachbildungsvorrichtung eine Schaftmaschine oder einen elektronischen Jacquardmechanismus umfasst, man die Bewegung der Webmaschine während des Schritts c) verfolgt mindestens bis zum Durchgang durch eine Winkelzone der Maschinenwelle, in der eine elektronische Steuerung der Position jedes Kettfadens an die Fachbildungsvorrichtung übertragen wird, und durch eine Winkelzone der Maschinenwelle, in der diese Steuerung mechanisch von der Wirkung gefolgt wird.
  6. Verfahren nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass während des Schritts c) das Fach von jedem der durchlaufenen Schüsse, von dem Schuss ab, während dem der Schussfadeneintragfehler detektiert wurde, bis zu und einschließlich dem Schuss, bei dem der Schussfaden wieder in das Fach eingeführt wird, und die nach der Feststellung des Fehlers rekonfigurierbar sind, mit der gleichen Öffnung gesteuert wird wie der Schuss, während dem der Schussfadeneintragfehler detektiert wurde.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass in dem Fall, in dem bei dem vorhergehenden Schusses der Schuss, während dem der Schussfaden wieder in das Fach eingeführt wird, das Fach die gleiche Öffnung hat, wie bei dem Schuss, während dem der Schussfadeneintragfehler detektiert wurde, die Halteposition der Webmaschine vor dem Ladenanschlag liegt, gemäß der Öffnung des Fachs des Schusses, der vor dem Schuss liegt, während dem der Schussfaden in das Fach wieder eingeführt wird.
  8. Verfahren nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass während des Schritts c) nur das Fach des Schusses, während dem der Schussfaden wieder eingeführt wird, mit der gleichen Öffnung gesteuert wird, wie der Schuss, während dem der Schussfadeneintragfehler detektiert wurde.
  9. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in dem Fall, in dem eine Fachbildungsvorrichtung der Webmaschine einen Nockenmechanismus umfasst, man die Bewegung der Webmaschine bei dem Schritt c) verfolgt, bis die Position des Endes des Bremsens vorbeigegangen ist und bis die Gesamtheit der anderen Schüsse der Armure durchlaufen ist.
  10. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in dem Fall, in dem die Fachbildungsvorrichtung der Webmaschine einen Nockenmechanismus umfasst, man die Maschine bei dem Schritt c) so schnell wie möglich anhält, man dann sie im langsamen Rücklauf über die Gesamtheit der während des Bremsens durchlaufenden Schüsse betreibt, bis man sich vor den Eintrag des Schusses setzt, während dem der Schussfadeneintragfehler detektiert wurde.
  11. Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Halteposition der Webmaschine berechnet wird, sobald der Schussfadeneintragfehler detektiert wurde.
  12. Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass in dem Fall, in dem mindestens zwei Fachbildungsvorrichtungen unterschiedlichen Typs an der Webmaschine verwendet werden, man die Bewegung der Maschine während des Schrittes c) bis zur Halteposition verfolgt, die, unter denen, die jeweils den unterschiedlichen Typen von Fachbildungsvorrichtungen zugeordnet sind, die am weitesten entfernt zu der Position des Schusses ist, für den ein Schussfadeneintragfehler detektiert wurde.
  13. Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Halteposition der Webmaschine nach dem Ladenanschlag liegt, entsprechend der öffnung des Fachs des Schusses, der vor dem liegt, während dem der Schussfaden in das Fach wieder eingeführt wird.
  14. Verfahren nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass, wenn die Webmaschine ihren Zyklus nach dem Herausnehmen des defekten Schussfadens (52A) wieder aufnimmt, ein neuer Schussfaden in das Fach (F2) durch die Lanze (12) eingetragen wird, für die der Fehler detektiert wurde, während die andere oder die anderen Lanzen (11) für einen Schuss leer laufen, dann wird der normale Betrieb der Webmaschine wieder aufgenommen.
  15. Verfahren nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass, wenn ein Schussfadeneintragfehler detektiert wird, man auf alle Geberlanzen (11, 12) einwirkt, um den oder die noch an diesen Lanzen befestigten Schussfäden (51, 52) während des ersten Rücklaufs der Geberlanzen nach außen in Bezug auf das Fach (F1, F2) freizugeben.
  16. Verfahren nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass, wenn ein Schussfadeneintragfehler detektiert wird, man zur Freigabe der Schussfäden nur auf die Geberlanze (12), für die ein Fehler detektiert wurde, bei dem ersten Rücklauf der Geberlanzen nach außen in Bezug auf das Fach (F1, F2) einwirkt.
  17. Verfahren nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass, während des Schritts b) man den Schussfaden (51, 52) freigibt, indem mittels mindestens einer Düse (101, 102), die Luft ausstößt oder ansaugt, ein Luftstrom (J2) zur Bewegung des Schussfadens aus dem Greifer (111, 121) hergestellt wird.
  18. Verfahren nach Anspruch 17, dadurch gekennzeichnet, dass der Luftstrom (J2) bis zum Halt der Webmaschine (M) aufrechterhalten bleibt.
EP20070356160 2006-11-15 2007-11-14 Verfahren zur Verarbeitung eines Schussfadenseintragsfehlers in einer Webmachine Expired - Fee Related EP1923495B1 (de)

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FR0609976A FR2908426B1 (fr) 2006-11-15 2006-11-15 Dispositif d'insertion de trame,metier a tisser pour tapis equipe d'un tel dispositif et procede de traitement d'un defaut d'insertion de trame dans un tel metier

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CN103306016B (zh) * 2013-05-07 2014-05-14 常熟市常纺纺织机械有限公司 用于编织双层织物的剑杆织机的引纬机构
EP3106555B1 (de) * 2015-06-16 2019-08-07 ITEMA S.p.A. Greiferwebmaschine mit einer pneumatischen vorrichtung zur entfernung von falschen schussfäden aus dem greiferpfad und verfahren
BE1023395B1 (nl) * 2015-09-01 2017-03-03 Picanol Nv Opstelling en werkwijze voor het optimaliseren van een weefproces
DE102015217356B3 (de) * 2015-09-10 2016-10-20 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Webmaschine mit einer Vorrichtung sowie Verfahren zum Halten, Zubringen und Eintragen von Schussfäden in ein Webfach
CN107956025B (zh) * 2018-01-09 2023-03-31 苏州硕海机电科技有限公司 一种带有轨道的有梭引纬装置
IT201900009357A1 (it) * 2019-06-18 2020-12-18 Itema Spa Metodo di controllo del sistema di inserimento trama di un telaio tessile a pinze
CN113293485B (zh) * 2021-05-26 2022-09-16 绍兴市嘉纬电子科技有限公司 一种高速耐磨型纺织剑头
CN115247312B (zh) * 2022-01-05 2023-11-21 浙江理工大学 一种多层纬纱剪断方法

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CN101200836A (zh) 2008-06-18
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CN101200836B (zh) 2011-12-14
DE602007004697D1 (de) 2010-03-25
FR2908426B1 (fr) 2009-05-29

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