EP2594671A1 - Dispositif de présentation de fils de trame à une pince d'un métier à tisser à pince, machine à tisser à pinces et procédé pour la présentation de deux fils de trame - Google Patents

Dispositif de présentation de fils de trame à une pince d'un métier à tisser à pince, machine à tisser à pinces et procédé pour la présentation de deux fils de trame Download PDF

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Publication number
EP2594671A1
EP2594671A1 EP13155075.8A EP13155075A EP2594671A1 EP 2594671 A1 EP2594671 A1 EP 2594671A1 EP 13155075 A EP13155075 A EP 13155075A EP 2594671 A1 EP2594671 A1 EP 2594671A1
Authority
EP
European Patent Office
Prior art keywords
gripper
thread
weft threads
weft
feed
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.)
Granted
Application number
EP13155075.8A
Other languages
German (de)
English (en)
Other versions
EP2594671B1 (fr
Inventor
Eddy Verclyte
Kurt Ghesquiere
Ronny Dewitte
Joost Carpentier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Picanol NV
Original Assignee
Picanol NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Picanol NV filed Critical Picanol NV
Publication of EP2594671A1 publication Critical patent/EP2594671A1/fr
Application granted granted Critical
Publication of EP2594671B1 publication Critical patent/EP2594671B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/236—Drawing grippers
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/233—Carrying grippers
    • 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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the invention relates to a device for presenting of weft threads to a gripper for a gripper weaving machine, more particularly to a feed gripper for a gripper weaving machine, wherein the device comprises a plurality of presenting elements which are movable between a rest position and a presentation position and comprises a support device which can be arranged between the presenting elements and a gripper to support a weft thread while the weft thread is taken up by the gripper, to a gripper weaving machine, and to methods used therein.
  • a device of the aforementioned type is for example known from EP 0 161 014 A1 and is suitable for the presenting of a weft thread to a feed gripper.
  • a device of the aforementioned type, which is suitable for the presenting of a weft thread to a receiving gripper, is for example known from WO 2005/047584 .
  • the object of this aspect of the invention is to improve a device of the aforementioned type so as to make it more suitable for presenting at the same time two weft threads to a gripper and for weaving two weft threads at the same time.
  • the support device comprises two support elements which are separated from each other by a thread separator, wherein the support elements extend in use substantially in the direction of movement of the gripper and wherein each support element allows an associated weft thread to be supported in a position transverse to the direction of movement of the gripper, which position is different from the position of the other weft thread.
  • a device allows two weft threads to be kept separate from each other, while they are presented in different positions to a gripper.
  • Each support element allows a weft thread to be presented in a different position transversely with respect to the direction of movement of the gripper, meaning inter alia in a different height position with respect to the side edge of the gripper.
  • the device according to the invention also allows two weft threads to be presented in a different position to a gripper, so that each weft thread can be presented in the region of a suitable guide of a gripper. The weft threads are separated by the device in the region of the gripper.
  • the thread separator also allows in this case weft threads which are supported on a different support element to be located at a distance from each other in the longitudinal direction or direction of movement of the gripper. This allows both weft threads to be brought into a shed substantially parallel to each other and at a constant distance from each other. This means that, from the support device, both weft threads lie at a distance from each other that is sufficient to prevent the weft threads from being able to move one over the other.
  • the invention allows two weft threads to be kept separate from each other during the insertion and to be beaten up parallel to each other, i.e. without said weft threads being laid over or around each other.
  • weft threads chosen from different bobbins can be woven in pairs and can be woven in parallel to each other.
  • the support elements are in use located at a different height with respect to the direction of movement of the gripper.
  • the support element which is arranged in use in proximity to the shed is located in a higher position than the support element which is arranged further away from the shed. This is advantageous for separating weft threads and for keeping them separate from one another during the insertion into a shed.
  • the support elements are located in use at a different depth with respect to the direction of movement of the gripper.
  • the support element, which is arranged in proximity to the shed is located further away from the beat-up line than the support element which is arranged remote from the shed. This is advantageous for separating weft threads and for keeping them separate from one another during the insertion into a shed.
  • the gripper consists of a feed gripper.
  • the support device is preferably formed from a curved plate at which the support elements and the thread separator are arranged.
  • the invention also relates to a gripper weaving machine for weaving two weft threads at the same time, the gripper weaving machine comprising a feed gripper, a receiving gripper, and a device for the presenting of weft threads to the feed gripper.
  • a second thread separator which allows two weft threads, which are presented to the feed gripper at a different height, to be separated from each other while they are guided by the feed gripper to a stop.
  • Said feed gripper offers the advantage that above all the height of the presented weft thread, and less the shape or the position of the feed gripper, is important for determining on which side of the second thread separator a weft thread will be located.
  • the two weft threads extend in this case through the feed gripper between the thread clamp and an associated stop on the side edge of the feed gripper that is positioned away from the thread clamp.
  • a weft thread which is presented above the second thread separator will in this case be located above the second thread separator in the feed gripper and be guided to the one stop, while a weft thread which is presented below the second thread separator will be located below the second thread separator and will be guided to the other stop.
  • the second thread separator also allows hereby both weft threads to be located at a distance from each other while they are clamped together by a thread clamp. This allows both weft threads to be taken up in the feed gripper substantially separately from each other and to be positioned at a distance from each other in the feed gripper while they are brought into a shed. This means that, from the feed gripper, the two weft threads lie at a distance from each other that is sufficient to prevent the weft threads from lying one over the other.
  • the feed gripper also allows both weft threads to be clamped together next to each other in the thread clamp. A feed gripper of this type, which a receiving gripper can penetrate during taking-over of weft threads, can be kept relatively slender.
  • weft threads chosen from different bobbins can be woven in pairs and can be woven in parallel to each other.
  • the second thread separator is arranged substantially in the longitudinal direction of the feed gripper in the region of the side edge of the feed gripper.
  • a guide which guides a weft thread to a stop, is provided on each side of the second thread separator. Because of the second thread separator, the weft threads can move via a guide to an associated stop where they are guided during the insertion of the weft threads into the shed.
  • Two grooves are formed by guides in proximity to the side edge of the feed gripper.
  • the two stops are arranged in the longitudinal direction of the feed gripper at a distance from each other. This allows the two weft threads to be kept separate from each other in the region of the feed gripper.
  • the second thread separator is welded, soldered, adhesively bonded or attached in an approximate manner to the feed gripper.
  • an appropriate material for example steel, for the thread guide without the entire clamping hook having to be made of this material.
  • a third thread separator which allows two weft threads to be separated from each other while they are clamped, is arranged in the region of the leading end of the receiving gripper.
  • Said receiving gripper offers the advantage of separating from each other two weft threads which both are clamped, the weft threads being separated in the region of the clamping hook which is located in the region of the leading end of the receiving gripper.
  • the third thread separator also allows both weft threads to be located at a distance from each other while they are clamped. This allows both weft threads to be brought into a weaving shed substantially parallel to each other and at a constant distance from each other. This means that in and from the receiving gripper, the two weft threads lie at a distance from each other that is sufficient to prevent the weft threads from lying one over the other.
  • the receiving gripper also allows both weft threads to be clamped next to each other between the clamping faces. This also allows the leading end to be embodied relatively narrow, while the two weft threads can still remain sufficiently separate from each other.
  • This offers the advantage that the feed gripper, which the receiving gripper penetrates during taking-over of weft threads, can also be kept relatively slender. This then leads to the advantage that even during the simultaneous insertion of two weft threads, merely a relatively small shed is necessary.
  • the invention allows two weft threads to be kept separate from each other during insertion and to be beaten up parallel to each other, i.e. without said weft threads being laid over or round each other.
  • weft threads originating from different bobbins can as chosen be woven in pairs and can be woven in parallel to each other.
  • the third thread separator is arranged substantially in the center between the hook opening of the clamping hook. This means that the third thread separator is provided between the hook opening of the clamping hook and that the clamping hook is, as it were, subdivided into two parts. This offers the advantage that for both weft threads substantially the same amount of space is provided in order to move in the region of the clamping hook to the position where said weft thread is clamped.
  • the third thread separator is attached in proximity to the leading end of the receiving gripper, more particularly in proximity to the upper edge of the leading end of the receiving gripper.
  • the term "upper edge” refers to the edge which is positioned on top in use.
  • the third thread separator can in this case be directed slightly downward in order to prevent it from undesirably taking along warp threads and to allow it to pass along a specific weft thread which is offered by a feed gripper. This offers the advantage that the third thread separator can be adapted according to the feed gripper in order to guide each time a weft thread along the third thread separator via the desired side.
  • the third thread separator is attached to the receiving gripper for example hereby welded, soldered, adhesively bonded or the like.
  • the receiving gripper for example hereby welded, soldered, adhesively bonded or the like.
  • the tip of the third thread separator ends in the longitudinal direction of the receiving gripper at a greater distance from the leading end of the receiving gripper than the tip of the clamping hook. This allows one of the weft threads on one side of the third thread separator to be taken up in the receiving gripper, while the other weft thread on the other side of the third thread separator can be taken up in the receiving gripper. As a result, both weft threads on different sides of the third thread separator can be moved between the two clamping faces to a clamped position.
  • the invention also relates to a method for presenting of two weft threads to a gripper for a gripper weaving machine, more particularly to a feed gripper for a gripper weaving machine, wherein each support element supports an associated weft thread in a position transverse to the direction of movement of the gripper, which is different from the position of the other weft thread, in order to present the associated weft thread to the gripper in a different position with respect to the gripper.
  • both weft threads can be presented on a different side of the thread separator and can be kept separate from each other.
  • the two weft threads are presented in a different position to a gripper, so that each weft thread is presented in the region of a suitable guide of a gripper.
  • the invention also relates to a method for weaving two weft threads at the same time comprising the taking-up of the two weft threads with a feed gripper having a second thread separator, wherein the feed gripper takes up one weft thread above its thread separator while the feed gripper takes up the other weft thread below its thread separator.
  • both weft threads can be moved on a different side of the second thread separator to a stop, more particularly can be moved to a stop via a guide.
  • the invention also relates to a method for weaving two weft threads at the same time comprising delivering of two weft threads to a receiving gripper having a third thread separator, more particularly delivering of two weft threads from a feed gripper to a receiving gripper, wherein the receiving gripper and the weft threads are located during the delivery in a position such that one weft thread is moved past the third thread separator while the other weft thread is not moved past the third thread separator.
  • This allows one weft thread, which is offered by the feed gripper, to be located on one side of the third thread separator, while the other weft thread, which is offered by the feed gripper, is located on the other side of the third thread separator.
  • both weft threads can be moved on different sides of the third thread separator between the clamping faces to a clamped position.
  • the device 1 for the presenting of weft threads to a feed gripper 10 comprises a number of presenting elements 11 to 16 which are movable between a rest position and a presentation position.
  • the presenting elements 11 and 15 are shown in the presentation position, while the presenting elements 12, 13, 14 and 16 are shown in the rest position.
  • just two weft threads 2 and 3 are shown, which in the exemplary embodiment are presented by associated presenting elements 11 and 15.
  • the device 1 comprises a support device 4 for weft threads, which is arranged between the presenting elements and a feed gripper 10.
  • the support device 4 comprises two support elements 5 and 6 and a thread separator 7 which separates the support elements 5 and 6 from each other.
  • the support elements 5 and 6 extend in use substantially in the direction of movement B of the feed gripper 10.
  • the support element 5 supports the weft thread 2 in a first position transverse to the direction of movement B of the feed gripper 10, while the support element 6 supports the weft thread 3 in a second position transverse to the direction of movement B.
  • the support device 4 is fixedly attached to a fixedly arranged support beam 8 to which weft scissors 9 are also attached.
  • the thread separator 7 prevents the weft thread 3 from being able to make contact with the support element 5 or the weft thread 2 from being able to make contact with the support element 6.
  • the support elements 5 and 6 are located, as shown in figures 1 and 2 , in use in the height direction H at a different height with respect to the direction of movement B of the feed gripper; more particularly there is a difference in height H1 between both.
  • the support element 5, which is located closer to the shed 17, is in this case arranged higher than the support element 6 which is more remote from the shed 17.
  • the support elements 5 and 6 are located, as is made clearer in figure 3 , in use in the depth direction D at a different depth with respect to the direction of movement B of the feed gripper; more particularly there is a difference in depth D1 between the portion of the support element 5 in proximity to the transverse guide 19 and the portion of the support element 6 in proximity to the thread separator 7.
  • the support element 5, which is arranged in proximity to the shed 17, is located in the direction of depth D further away from the beat-up line 20 than the support element 6 which is arranged removed from the shed 17.
  • the support device 4 consists of a curved plate 18 wherein the support elements 5 and 6, the thread separator 7 and the transverse guide 19 are arranged.
  • the plate 18 is curved in the region of the thread separator 7 and of the transverse guide 19. In the region of the transverse guide 19 and of the thread separator 7, wear-resistant elements can be arranged to limit the wear of the support device 4.
  • the feed gripper 10 comprises a gripper housing 21 which comprises a plurality of guides for weft threads.
  • a number of guides such as guides 22 and 23, guide weft threads to a thread clamp 24, while other guides 25 and 26 guide weft threads to a stop 27 or 28.
  • the feed gripper 10 also comprises a thread separator 29 which is provided with two guides 30 and 31 for guiding weft threads to a stop 27 or 28.
  • the guides 30 and 31 are each arranged to a different side of the thread separator 29.
  • the thread separator 29 is attached in proximity to a side edge 32 of the feed gripper 10 that is positioned away from the thread clamp 24.
  • the thread separator 29 is in this case positioned in proximity to the side edge 32 of the feed gripper 10 that is positioned in proximity to the support device 4 during the taking-up of weft threads.
  • two weft threads 2 and 3 which are each supported by an associated support element 5 or 6 in a specific position transverse to the direction of motion B of the feed gripper 10, are first presented to the feed gripper 10.
  • the weft threads 2 and 3 will be located in a different position with respect to the feed gripper 10 while they are presented to the feed gripper 10 as the feed gripper 10 moves toward the shed 17.
  • the highest positioned weft thread 2 will be guided between the guides 25 and 30 to the stop 27, while the lowest positioned weft thread 3 will be guided between the guides 26 and 31 to the stop 28.
  • the weft threads 2, 3 are represented schematically as a dot; more particularly, the intersection of the weft threads with a plane in the region of the side edge 32 is represented.
  • the thread separator 29 is arranged, substantially in the longitudinal direction of the feed gripper 10, in the region of the side edge 32 of the feed gripper 10.
  • the thread separator 29 has a component which extends in the longitudinal direction of the feed gripper 10.
  • the guides 25 and 30 form a groove 33 and the guides 26 and 31 form a groove 34 in the region of the side edge 32 of the feed gripper 10.
  • the groove 33 ends at a stop 27 and the groove 34 at a stop 28, the stops 27 and 28 being arranged, in the longitudinal direction of the feed gripper 10, at a distance A1 from each other.
  • the provision of the thread separator 29 in proximity to the side edge 32, and thus in proximity to the support device 4, offers the advantage that the weft threads 2, 3 are presented by the support device 4 precisely with respect to the feed gripper 10, meaning inter alia that their height position with respect to the side edge 32 of the feed gripper 10 is precisely defined.
  • two weft threads 2 and 3 can be taken up by a feed gripper 10 so that one weft thread 2 comes to lie above the thread separator 29 and the other weft thread 3 comes to lie below the thread separator 29, so that both weft threads 2 and 3 are each guided on a different side of the thread separator 29 and to a different stop 27 or 28.
  • the thread separator 29 can be attached to the feed gripper 10 in various ways, for example welded, soldered, adhesively bonded or in still another such manner.
  • weft threads 2 and 3 are each guided on a different side of the thread separator 29 and are guided respectively along the transverse guide 19 and the thread separator 7, the weft threads 2, 3 remain, during the further movement of the feed gripper 10 through the shed 17, separate from each other, substantially parallel to each other and cannot touch each other.
  • the receiving gripper 40 represented in figures 6 and 7 comprises a clamping hook 35 to which an insert 36, which forms a clamping face 37 of the clamping hook 35, is arranged.
  • the clamping face can also be provided directly, i.e. without an insert on the clamping hook.
  • the receiving gripper 40 also comprises a clamping element 38 which is provided with a clamping face 39. The clamping element 38 can be moved back and forth with respect to the gripper housing 41 by means of a drive lever 42 substantially in the longitudinal direction of the receiving gripper 40.
  • a spring 43 presses the clamping element 38 toward the clamping hook 35 so that the clamping faces 37 and 39 are pressed toward each other in order to allow a weft thread to be clamped between the clamping face 37 and the clamping face 39.
  • a thread separator 45 which allows two weft threads 2 and 3 to be separated from each other while they are clamped between the clamping faces 37 and 39, is attached in proximity to the leading end 44 of the receiving gripper 40.
  • the thread separator 45 is arranged substantially in the center between the hook opening 46 of the clamping hook 35.
  • the thread separator 45 is attached in proximity to the leading end 44 of the receiving gripper 40.
  • the thread separator 45 is attached in proximity to the upper edge 47 of the leading end 44 of the receiving gripper 40.
  • the thread separator 45 is directed slightly downward; more particularly, the tip 48 of the thread separator 45 that is positioned away from the leading end 44 is directed downward.
  • the thread separator 45 can be welded to the receiving gripper 10. According to a variant, said thread separator can be soldered or adhesively bonded to the receiving gripper 40. Obviously, still other manners of fastening are also possible.
  • the tip 48 of the thread separator 45 ends, in the longitudinal direction L of the receiving gripper 40, this is also the direction of movement of the receiving gripper 40, at a greater distance from the leading end 44 of the receiving gripper 40 than the tip 49 of the clamping hook 35, more particularly the tip 49 of the insert 36 of the clamping hook 35.
  • the tips 48 and 49 are arranged, in the longitudinal direction, at a distance L1 from each other.
  • the tip 48 of the thread separator 45 can also be positioned slightly more toward the side edge 50 of the receiving gripper 40 than the tip 49 of the clamping hook 35; more particularly, the tip 48 and the tip 49 end at a distance D2 from each other in a direction perpendicular to the direction of movement or longitudinal direction L of the receiving gripper 40.
  • the side edge 50 is positioned, in use, substantially in the extension of the side edge 32 of the feed gripper 10 or directed, in the transverse direction, toward the support element 4.
  • the two weft threads 2, 3 are in this case delivered from the feed gripper 10 to a receiving gripper 40 by moving the feed gripper 10 and the receiving gripper 40 during the delivery into a mutual position as represented in figure 5 .
  • the one weft thread 2 is moved past the thread separator 45 while the other weft thread 3 is not moved past the thread separator 45.
  • the weft thread 2 is moved past both the tip 48 and the tip 49, while the weft thread 49 is only moved past the tip 49.
  • the weft threads 2, 3 are located roughly as schematically represented in figure 6 .
  • the weft thread 3 arrives between the clamping face 37 and the thread separator 45, while the weft thread 2 arrives between the thread separator 45 and the clamping element 38.
  • the taken-up weft threads 2 and 3 are then each located on a different side of the thread separator 45 and are separated by the thread separator 45.
  • the receiving gripper 40 moves to the right away from the feed gripper 10 and away from the support device 4 and the weft threads 2, 3 extend, as represented in figure 7 , from the receiving gripper 40 to the support device 4.
  • the receiving gripper 40 and the weft threads 2 and 3 are located, during the delivery, in a position such that one weft thread 2 is moved past the thread separator 45, while the other weft thread 3 is not moved past the thread separator 45.
  • the distances D2 and L1 are selected, as indicated in figure 7 , in such a way that the weft threads 2 and 3 are each guided, irrespective of the mutual position in the longitudinal direction L of the feed gripper 10 and the receiving gripper 40 during the delivery, as a result of the positioning of the weft threads 2, 3 in the region of the feed gripper 10, on an appropriate side of the thread separator 45.
  • the weft threads 2 and 3 extend between a respective stop 27 or 28 on the side edge 32 of the feed gripper 10 and the thread clamp 24.
  • the thread clamp 24 can be made in a known manner and can comprise clamping elements 52, 53 and guide elements 54 for weft threads.
  • the clamping hook 35 of the receiving gripper 40 is arranged, during the delivery of weft threads 2 and 3, in proximity to and facing to the side edge 32 of the feed gripper 10 that comprises the thread separator 29 and the stops 27 and 28 for weft threads.
  • the side edge 50 of the receiving gripper 40 is positioned in transverse direction further away from the side egde 32 than the clamping hook 35.
  • the thread separator 45 is arranged substantially in the center between the hook opening 46 of the receiving gripper 40.
  • the thread separator 45 is directed to and is arranged in proximity to the side edge 32 during the delivery of weft threads 2 and 3.
  • This arrangement offers the advantage that the tip 48 of the thread separator 45 can enter between the two weft threads 2 and 3 at a position where the two weft threads 2 and 3 are arranged at a greater distance from each other, in other words at a position further away from the thread clamp 24.
  • the feed gripper 10 represented in figures 10 to 12 comprises a gripper housing 21 which comprises at a side edge 32 a thread separator 29 with two guides 30, 31 for weft threads 2, 3 that guide a weft thread 2, 3 to a respective stop 27, 28.
  • the feed gripper 10 further comprises a thread clamp 24 positioned away from the side edge 32.
  • the gripper housing 21 is substantially U-shaped and comprises a bottom plate connecting the side edge 32 with a side edge near the thread clamp 24.
  • a thread guide element 55 is provided that is movable between an open and a closed position and together with the thread clamp 24.
  • the thread guide element 55 is substantially L-shaped and comprises a top edge 56 and a side edge 57 that are arrangeable to guide warp threads during the insertion of weft threads.
  • the weft threads can extend between the thread clamp 24 and the stops 27, 28.
  • the thread clamp 24 can be made in a known manner, for example as explained in DE 1710292 or CH 510151 .
  • the weft thread 3 arrives in proximity of the guide 31 before the weft thread 2 arrives in proximity of the guide 30.
  • the side edge 32 with the thread separator 29 is positioned in proximity to a support device 4 that presents two weft threads 2, 3 in a different position to the feed gripper 10.
  • the support device 4 is part of a device for presenting weft threads that also comprises a plurality of presenting elements for presenting weft threads in a way similar as shown in figure 1 and is arranged in use between the presenting elements 11, 15 and the feed gripper 10.
  • the support device 4 comprises a plate 18 with two support elements 5, 6 that are separated from each other by a thread separator 7 and support a respective weft thread 2, 3 in a different position. As shown the difference in position is in a direction transverse to the direction of movement of the feed gripper 10, in particular there is a difference in height and a difference in depth between the two positions.
  • the difference in heigth or level allows to take up one weft thread 2 above the thread separator 29 and the other weft thread 3 below the thread separator 29, in order to guide each of the two weft threads 2, 3 on a different side of the thread separator 29 to a stop 27, 28.
  • the thread clamp 24 and the thread guide element 55 can close such that the two weft threads are clamped by the thread clamp 24 and are substantially enclosed by the thread guide element 55, as shown in dash-dot-lines in figure 11 .
  • the difference in depth is in particular advantageous to guide weft threads separated during their further insertion into the weaving shed.
  • a weaving reed 51 is shown.
  • the feed gripper 10 is arranged in the proximity to the receiving gripper 40 in order to feed the weft threads 2 and 3 in a different position to the receiving gripper 40.
  • the thread guide element 55 is not shown in figure 12 .
  • the receiving gripper 40 represented in figures 12 to 14 comprises a clamping hook 35 provided with a clamping face 37 and a clamping element 38 provided with a clamping face 39 to clamp weft threads 2 and 3 between the clamping faces 37 and 39.
  • the clamping element 38 can be made in a known manner, for example as explained in DE 1710292 .
  • the receiving gripper 40 comprises a thread separator 45 that is arranged to separate two weft threads 2, 3 while they are delivered by the feed gripper 10 and clamped by the receiving gripper 40.
  • the tip 48 of the thread separator 45 ends, in the longitudinal direction of the receiving gripper 40, at a greater distance from the leading end 44 of the receiving gripper 40 than the tip 49 of the clamping hook 35.
  • the thread separator 45 and the clamping hook 35 are arranged in the direction perpendicular to the moving direction or the longitudinal direction of the receiving gripper at a distance away from each other, in other words with a difference in depth with respect to each other, such that both weft threads are also separated in the transverse direction from each other near the receiving gripper 40.
  • the opening and closing of the thread clamps of the feed gripper 10 and the receiving gripper 40 can be controlled as explained in CH 510151 or EP 266286 .
  • the weft thread 2 can first be taken along with the thread separator 45, then the weft thread 3 can be taken along with the clamping hook 35 and then the clamping faces 37 and 39 can clamp both weft threads 2, 3 while the thread clamp 24 releases the weft threads 2, 3 and the receiving gripper 40 is already moving to the opposite side of the shed.
  • the feed gripper 10 and the receiving gripper 40 can be moved in a known way into the weaving shed by flexible gripper bands or rigid gripper rods.
  • weft threads 2, 3 are, during the insertion thereof, kept separate from each other, it is possible to keep the weft threads 2, 3 mutually in position, allowing these weft threads, during the joint beating-up of both weft threads 2, 3, to be beaten up and to be woven in parallel to each other.
  • the weft threads 2, 3 not only are kept separate in the region of the device 1 for presenting and in the region of the feed gripper 10, but also be kept separate and substantially parallel in the region of the receiving gripper 40.
  • the keeping separate in the region of the receiving gripper 40 is important above all for the beating-up of both weft threads 2, 3 and more particularly for the weaving-in, in parallel, of both weft threads 2, 3.
  • the term "weaving-in in parallel” refers to the fact that the two weft threads 2, 3 also remain parallel to each other and do not twist over each other in the fabric.
  • two other weft threads can also be brought together in a similar manner into the shed, wherein for example one weft thread is presented by one of the presenting elements 11, 12 or 13 and the other weft thread is presented by one of the presenting elements 14, 15 or 16.
  • two weft threads can in each case be as chosen brought into the shed via a selected presenting element.
  • the invention is not limited to the insertion of one of the two weft threads from a specific thread supply, such as is for example the case in EP 633336 .
  • weft threads in each case two weft threads are inserted, it is of course also possible to insert, using a device, a feed gripper and a receiving gripper according to the invention, merely one single weft thread.
  • the joint insertion of, for example, three or more weft threads using a device, a feed gripper and a receiving gripper according to the invention is not ruled out.
  • two groups of weft threads can be inserted separately from each other and can be woven in parallel to one another.
  • the invention is not limited to the use of six presenting elements 11 to 16, but that use may be made of any number of presenting elements, for example four, eight or twelve presenting elements. If weaving is carried out using just two weft threads, the presenting elements can be replaced by a fixedly arranged thread eye. Likewise, one group of presenting elements 11, 12 and 13 can be used, while the other group of presenting elements 14, 15 and 16 can be replaced by a fixedly arranged thread eye. Other combinations of presenting elements and thread eyes are of course also possible.
  • the feed gripper 10 and the receiving gripper 40 can be attached in a known manner to the leading end of a gripper band or gripper rod with which they can be moved into and out of a shed 17.
  • the gripper housings 21, 41 can be made of metal, for example light metal.
  • weft threads 2 and 3 are inserted by means of a feed gripper 10 and a receiving gripper 40
  • a weft thread over the entire weaving width using just a feed gripper or using just a receiving gripper. If the weft threads are inserted using just a feed gripper, then the feed gripper takes up a weft thread as represented in figure 1 and brings it to the opposite side of the shed.
  • a fixedly arranged clamping hook which is embodied in a similar manner to the leading end of the receiving gripper, can in this case be arranged to the opposite side of the shed.
  • the receiving gripper takes up a presented weft thread, which has been presented as in figure 1 , and brings it to the opposite side of the shed.
  • the receiving gripper 40 can be brought into a position with respect to the weft threads 2, 3 in the region of the support device 4 which is similar to that represented in figure 6 .
  • Gripper weaving machines which utilize a feed gripper and a receiving gripper are the most widespread.
  • the illustrated exemplary embodiments serve merely to clarify the invention. Variants are readily possible, in particular in relation to the shape of the guides and the positions of the weft threads. Also possible are combinations of the illustrated embodiments which come under the extent of protection of the claims. In the case of such variants and combinations of the illustrated embodiments, the weft threads 2 and 3 are also guided in such a way that they remain separate from each other and allow both weft threads 2, 3 to be jointly beaten up and to be woven in parallel to each other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP13155075.8A 2008-05-07 2009-05-05 Dispositif de présentation de fils de trame à une pince d'un métier à tisser à pince, machine à tisser à pinces et procédé pour la présentation de deux fils de trame Active EP2594671B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2008/0261A BE1018116A3 (nl) 2008-05-07 2008-05-07 Nemergrijper, gevergrijper en inrichting voor een grijperweefmachine.
EP09741855.2A EP2300651B1 (fr) 2008-05-07 2009-05-05 Pince de réception, pince d'amenée et dispositif pour machine à tisser à lances

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP09741855.2 Division 2009-05-05
EP09741855.2A Division EP2300651B1 (fr) 2008-05-07 2009-05-05 Pince de réception, pince d'amenée et dispositif pour machine à tisser à lances

Publications (2)

Publication Number Publication Date
EP2594671A1 true EP2594671A1 (fr) 2013-05-22
EP2594671B1 EP2594671B1 (fr) 2016-08-03

Family

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EP09741855.2A Active EP2300651B1 (fr) 2008-05-07 2009-05-05 Pince de réception, pince d'amenée et dispositif pour machine à tisser à lances
EP13155075.8A Active EP2594671B1 (fr) 2008-05-07 2009-05-05 Dispositif de présentation de fils de trame à une pince d'un métier à tisser à pince, machine à tisser à pinces et procédé pour la présentation de deux fils de trame

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EP09741855.2A Active EP2300651B1 (fr) 2008-05-07 2009-05-05 Pince de réception, pince d'amenée et dispositif pour machine à tisser à lances

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EP (2) EP2300651B1 (fr)
CN (1) CN102016145B (fr)
BE (1) BE1018116A3 (fr)
WO (1) WO2009135636A1 (fr)

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CN101988230B (zh) * 2010-11-26 2012-05-23 浙江奔特纺织机械有限公司 一种适用于挠性剑杆织机的剑头组件
ITPD20110249A1 (it) * 2011-07-21 2013-01-22 Smit Textile S P A Telaio tessile a singola pinza
EP3060707B1 (fr) * 2013-10-24 2019-10-02 Vandewiele NV Tête de lance donneuse, lance donneuse, machine à tisser à lances et procédé permettant d'insérer un fil de trame dans ladite machine à tisser à lances en utilisant ladite tête de lance donneuse
BE1023036A1 (nl) * 2015-05-07 2016-11-09 Picanol Nv Grijperopener voor een weefmachine
BE1023978B1 (nl) * 2016-03-25 2017-09-28 Picanol N.V. Grijper voor een grijperweefmachine
DE102018222722B3 (de) * 2018-12-21 2019-12-19 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Bringer-greiferkopf, webmaschine mit einem solchen bringer-greiferkopf und verfahren zum doppelschusseintrag
WO2022258443A1 (fr) 2021-06-10 2022-12-15 Picanol Pince pour une machine à tisser à lances
EP4101960B1 (fr) 2021-06-10 2024-09-04 Picanol Pince pour machine à tisser à lance

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DE1710292A1 (de) 1967-04-04 1971-10-28 Dornier Gmbh Lindauer Schussfadeneintragvorrichtung an Webmaschinen
EP0161014A1 (fr) 1984-04-06 1985-11-13 Picanol N.V. Dispositif d'annulation de l'insertion pour métiers à tisser à griffes
EP0266286A2 (fr) 1986-10-31 1988-05-04 SOCIETE ALSACIENNE DE MATERIEL TEXTILE- SAMT (Société anonyme) Dispositif pour l'insertion des fils de trame sur les métiers à tisser sans navette
JPH04209852A (ja) * 1990-11-30 1992-07-31 Kanebo Ltd 緯糸の２本同時挿入方法およびそれに用いる溝付きインサートレピアならびに溝付きキヤリアレピア
EP0633336A1 (fr) 1993-07-06 1995-01-11 Sulzer RàœTi Ag Procédé pour l'insertion simultanée de deux fils de trame et métier à tisser équipé d'un dispositif pour la mise en oeuvre du procédé
WO2000029651A2 (fr) * 1998-11-17 2000-05-25 Sulzer Tessile S.R.L. Ensemble passe-fil pour metiers a tisser sans navette approprie, notamment, a l'introduction simultanee de plusieurs trames dans une entree de chaine
WO2005047584A1 (fr) 2003-10-21 2005-05-26 Picanol N.V. Procede pour selectionner et alimenter des fils de trame et metier a tisser a pinces muni d'un dispositif pour selectionner et alimenter des fils de trame

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DE10114755A1 (de) 2001-03-21 2002-09-26 Picanol Nv Nehmergreifer für eine Greiferwebmaschine
KR100498003B1 (ko) * 2004-10-21 2005-07-01 대흥정밀공업 주식회사 관성력과 위사장력을 이용한 레피어직기용 레피어 및 그리퍼
JP4209852B2 (ja) * 2005-02-25 2009-01-14 株式会社タチエス 自動車シートに用いる樹脂サイド・カバー
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Publication number Priority date Publication date Assignee Title
DE1710292A1 (de) 1967-04-04 1971-10-28 Dornier Gmbh Lindauer Schussfadeneintragvorrichtung an Webmaschinen
CH510151A (de) 1969-10-31 1971-07-15 Dornier Gmbh Lindauer Schussfadeneintragungsvorrichtung an schützenlosen Webmaschinen
EP0161014A1 (fr) 1984-04-06 1985-11-13 Picanol N.V. Dispositif d'annulation de l'insertion pour métiers à tisser à griffes
EP0266286A2 (fr) 1986-10-31 1988-05-04 SOCIETE ALSACIENNE DE MATERIEL TEXTILE- SAMT (Société anonyme) Dispositif pour l'insertion des fils de trame sur les métiers à tisser sans navette
JPH04209852A (ja) * 1990-11-30 1992-07-31 Kanebo Ltd 緯糸の２本同時挿入方法およびそれに用いる溝付きインサートレピアならびに溝付きキヤリアレピア
EP0633336A1 (fr) 1993-07-06 1995-01-11 Sulzer RàœTi Ag Procédé pour l'insertion simultanée de deux fils de trame et métier à tisser équipé d'un dispositif pour la mise en oeuvre du procédé
WO2000029651A2 (fr) * 1998-11-17 2000-05-25 Sulzer Tessile S.R.L. Ensemble passe-fil pour metiers a tisser sans navette approprie, notamment, a l'introduction simultanee de plusieurs trames dans une entree de chaine
WO2005047584A1 (fr) 2003-10-21 2005-05-26 Picanol N.V. Procede pour selectionner et alimenter des fils de trame et metier a tisser a pinces muni d'un dispositif pour selectionner et alimenter des fils de trame

Also Published As

Publication number Publication date
CN102016145B (zh) 2013-03-27
BE1018116A3 (nl) 2010-05-04
WO2009135636A1 (fr) 2009-11-12
WO2009135636A8 (fr) 2010-11-18
EP2594671B1 (fr) 2016-08-03
EP2300651A1 (fr) 2011-03-30
CN102016145A (zh) 2011-04-13
EP2300651B1 (fr) 2013-10-09

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