EP2175057B1 - Vorrichtung und Verfahren zum Ausziehen der Hilfsschüsse und Webmaschine mit einer derartigen Vorrichtung - Google Patents

Vorrichtung und Verfahren zum Ausziehen der Hilfsschüsse und Webmaschine mit einer derartigen Vorrichtung Download PDF

Info

Publication number
EP2175057B1
EP2175057B1 EP20080166242 EP08166242A EP2175057B1 EP 2175057 B1 EP2175057 B1 EP 2175057B1 EP 20080166242 EP20080166242 EP 20080166242 EP 08166242 A EP08166242 A EP 08166242A EP 2175057 B1 EP2175057 B1 EP 2175057B1
Authority
EP
European Patent Office
Prior art keywords
fabric
weft yarns
auxiliary weft
gripper
unit
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.)
Active
Application number
EP20080166242
Other languages
English (en)
French (fr)
Other versions
EP2175057A1 (de
Inventor
Martin Burkert
Dieter Pietzonka
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.)
Schoenherr Textilmaschinenbau GmbH
SCHONHERR TEXTILMASCHINENBAU GmbH
Original Assignee
Schoenherr Textilmaschinenbau GmbH
SCHONHERR TEXTILMASCHINENBAU GmbH
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 Schoenherr Textilmaschinenbau GmbH, SCHONHERR TEXTILMASCHINENBAU GmbH filed Critical Schoenherr Textilmaschinenbau GmbH
Priority to EP20080166242 priority Critical patent/EP2175057B1/de
Publication of EP2175057A1 publication Critical patent/EP2175057A1/de
Application granted granted Critical
Publication of EP2175057B1 publication Critical patent/EP2175057B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/20—Looms forming pile over warpwise wires
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D5/00—Selvedges
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/22—Temples

Definitions

  • This invention relates to a device for drawing auxiliary weft yarns out of a fabric on a loom, that is when the fabric is being woven.
  • This invention also relates to a loom equipped with such a device and to a process for drawing auxiliary weft yarns out of a fabric on a loom.
  • auxiliary weft yarns 1001 that are kept away from a backing fabric 1003 made of ground weft yarns 1004 and ground warp yarns 1005 by lancets 1006 that extend from the back of the shed through the reed to at least the beating point.
  • the auxiliary weft yarns 1001 must be removed and, in practice, they are drawn-off from the fabric.
  • BE-A-1 014 269 considers two approaches to draw-off auxiliary wefts from a fabric.
  • a cutting blade cuts the auxiliary weft yarns in their middle, so that two parts of the weft yarns are pulled out of the fabric, at the level of two longitudinal edges of the fabric, by grippers having a forward and backward movement.
  • the auxiliary weft yarns are drawn-off at the level of one edge of the fabric.
  • DE-U-296 04 236 mentions the principle of holding a fabric when auxiliary weft yarns are pulled out of this fabric. No structure is disclosed to perform this function.
  • the invention aims at solving these problems with a new device for drawing auxiliary weft yarns out of a fabric, without needing to cut the auxiliary weft yarns in the middle, whereas the quality of the fabric can be improved.
  • the invention concerns a device for drawing auxiliary weft yarns out of a fabric on a loom, this device comprising at least one draw-off unit located next to a first longitudinal edge of the fabric and having means to exert, on at least one auxiliary weft yarn, a drawing effort, and at least one locking unit adapted to hold the fabric in its position along a direction substantially parallel to the weft yarns in the fabric.
  • This device is characterized in that the locking unit comprises a gripper sub-unit and driving means adapted to move the gripper sub-unit along a direction substantially parallel to the weft yarns in the fabric.
  • the locking unit holds the fabric in position, which enables it to resist the friction forces induced by the drawing-off movement of the auxiliary weft yarns on the totality of their length.
  • the locking unit prevents the fabric from going along an oblique way that could result from the shear stress induced by friction forces generated by the displacement of the auxiliary weft yarns within the loops of the fabric.
  • the device for drawing auxiliary weft yarns might incorporate one or several of the following features:
  • the invention also concerns a weaving loom equipped with a device as mentioned here above for drawing auxiliary weft yarns out of a fabric when such a fabric is being woven on this loom.
  • Such a loom is more reliable and produces fabrics of higher quality than the looms of the prior art.
  • such a loom may comprise dedicated means, preferably Leno heddles, to weave a special false selvedge whose weft yarns are formed exclusively by auxiliary weft yarns.
  • the invention concerns a process according to claim 10 which can be implemented with a device as mentioned here-above for drawing auxiliary weft yarns out of a fabric on a loom.
  • a carpet weaving loom 1 is partially and schematically represented on figure 2 as seen from its back or feeding side.
  • Loom 1 includes a series of partially represented heddle frames 11 each carrying several heddles 12 only one of which is represented on figure 2 for the sake of simplicity.
  • Frames 11 are driven by non-represented means in order to move binding warp yarns 13 so as to form a ground shed for the backing of a fabric 2 to be woven on loom 1.
  • a non represented rapier introduces ground weft yarns 14 in the ground shed in order to form the backing fabric, with the binding warp yarns 13. The movement of this rapier is represented by arrow A 2 .
  • Jacquard heddles 15 are driven by a non represented Jacquard mechanism and cooperate with pile warp yarns 16 in order to form the pile shed.
  • Lancets 17 are arranged within the shed and form a support for some auxiliary weft yarns 31 which are introduced within the pile shed by a second non represented rapier whose movement is represented by arrow A 3 .
  • One lancet 17 is represented on figure 2 , for the sake of clarity. Several lancets are actually used. Therefore, the auxiliary weft yarns can lie on the respective lancets 17, as shown on figure 1 .
  • Warp yarns 13 and ground weft yarns 14 form together the backing of a fabric 2, for instance a carpet provided with loops.
  • 21 and 22 denote respectively the longitudinal edges of fabric 2 shown respectively on the left and on the right of this fabric on figure 2 .
  • 23 denotes the front side of fabric 2 and 24 its backside. Front side 23 is provided with loops similar to the loops 1002 of figure 1 .
  • A-A' denotes the direction of progression of fabric 2 within loom 1. This direction is rectilinear and vertical on a part of the path of fabric 2 on figure 2 where fabric 2 forms a vertical plane.
  • B-B' denotes a direction perpendicular to direction A-A' and comprised within the plane of fabric 2 when direction A-A' is vertical.
  • Warp yarns 13 extend along direction A-A'.
  • Ground weft yarns 14 and auxiliary weft yarns 31 extend along direction B-B' in the vertical position of fabric 2
  • a device 20 is provided on loom 1 and devoted to the weaving of a special false selvedge 25 for fabric 2.
  • Device 20 is represented in a schematic way on figure 2 and comprises heddle 18 as means to move yarns 19 which are woven with the auxiliary weft yarns 31 introduced by the second rapier in the pile shed.
  • false selvedge 25 is formed by all auxiliary weft yarns 31 and some dedicated warp yarns 19 driven by device 20.
  • device 20 may include two heddles, each provided with lifting heddle and one doup. These two heddles are advantageously driven by the Jacquard mechanism.
  • Device 20 can also be formed of a mechanism having discs oscillating about a weft wise axis and provided with apertures for warp yarns 19, or any kind of mechanism that permits to cross warp yarns between them in a weave. As explained here-after with respect to figure 8 , a Leno type weaving pattern is used for warp yarns 19, which improves the resistance of false selvedge 25 to an effort applied on weft yarns 31.
  • Non represented means are also used to weave standard false selvedges next to each longitudinal edge 21 or 22 with dedicated warp yarns and with ground weft yarns 14.
  • the standard false selvedge 26 close to edge 21 is separated by non represented cutting means downstream the draw-off unit.
  • the standard false selvedge close to edge 22 is not represented since it is cut at the level of the beating point.
  • auxiliary weft yarns 31 extend in the main part of fabric 2, between edges 21 and 22, and up to false selvedge 25. They lie perpendicularly to direction A-A'.
  • a device 50 is provided on loom 1 in order to draw-off or pull the auxiliary weft yarns 31 out of fabric 2.
  • This device 50 comprises a draw-off unit 51 mounted next to longitudinal edge 21 of fabric 2 and a locking unit 52 mounted next to longitudinal edge 22.
  • Draw-off unit 51 comprises an elongated guide bracket 53 whose longitudinal axis X 53 is substantially parallel to the weft yarns 14 and 31 in fabric 2, that is perpendicular to direction A-A' and parallel to direction B-B'.
  • a servomotor 54 is mounted on bracket 53 next to its extremity opposite to fabric 2 and drives a belt 55.
  • Belt 55 goes around a idle pulley 56 mounted on bracket 53 in the vicinity of edge 21.
  • a carriage 58 is fast with belt 55 and can be moved between the positions represented respectively on figures 2 and 4 , that is between a position close to engine 54 and a position close to edge 21, and vice-versa.
  • Carriage 58 slides on a rail 57 fast with bracket 53 and parallel to axis X 53 .
  • Device 50 also includes an electrical winder 59 adapted to wind the special false selvedge 25 when it comes out of a guide member 60 located next to edge 21 and held in position by a bracket 62.
  • the false selvedge 25 enters guide member 60 and is then pulled by winder 59, which enables to separate false selvedge 25 from the main part of fabric 2.
  • False selvedge 25 can then be directed towards a bin 61.
  • auxiliary weft yarns 31, which are fast with false selvedge 25, are only partially represented.
  • auxiliary weft yarns 31 are not represented on the part of false selvedge 25 which is separated from the main part of fabric 2.
  • only one such auxiliary weft yarn 31 is represented, namely an auxiliary weft yarns being pulled out of fabric 2.
  • Carriage 58 is provided with a hook-forming gripper 65 which comprises an arm 66 fixed by screws 67 on carriage 58 and a hook part 68 located at the end of arm 66 directed towards edge 21 and where an idle pulley 69 is rotatively mounted around an axis X 69 which is oblique with respect to the longitudinal axis X 66 of arm 66.
  • Axis X 69 is defined by a support member 70 fast with arm 66.
  • Pulley 69 is mounted with respect to member 70 thanks to a roller bearing 71, which facilitates rotation of pulley 69 around axis X 69 .
  • roller bearing 71 one can also use a needle bearing or a ball bearing.
  • hook part 68 is represented in a simplified way, as a hook.
  • the structure of this part can be derived from figures 4 , 6 and 7 .
  • a deflector 72 is also mounted at the end of arm 66 next to pulley 69, at the level of hook part 68.
  • Deflector 72 aims at guiding an auxiliary weft yarn 31 towards the radial external surface 69A of pulley 69 when carriage 58 moves arm 66 towards edge 21, in such a way that deflector 72 comes into contact with this yarn.
  • one auxiliary weft yarn extending between this false selvedge and the main part of fabric 2 is on the path of hook part 68, so that it can be partly wounded around surface 69A after it has been guided by deflector 72.
  • auxiliary weft yarn 31 is pulled by hook part 68 out of fabric 2. Since a part of this auxiliary weft yarn is fast within false selvedge 25, the traction effort T 1 exerted on a weft yarn 31 by pulley 69 is such that the part of the yarn 31, which is still engaged in the loops of fabric 2, is pulled out of these loops. Effort T 1 is substantially parallel to weft yarns in fabric 2, that is to direction B-B', which facilitates pulling of auxiliary weft yarns 31 out of fabric 2.
  • the yarn 31 makes a loop between false selvedge 25 and edge 21, so that the length L 58 of the path of carriage 58 between its two extreme positions is about the same as half of the width l 2 of fabric 2 taken between its two edges 21 and 22.
  • the fact that the value of length L 58 is about half of the value of width l 2 means that the difference between L 58 and l 2 /2 is less than 20%. In other words, with a movement of the carriage 58 slightly larger than half of width l 2 , it is possible to pull a weft yarn 31 completely out of fabric 2, from edge 21.
  • Carriage 58 is provided with no positively driven accessory. Therefore, carriage 58 does not need to be fed with power and can be very light, as compared to the case where it would carry a clamp.
  • Friction forces resist the extraction of a weft yarn 31 out of fabric 2. These friction forces could locally deform fabric 2 and cause it to deviate from its path.
  • locking unit 52 comprises two rollers 81 and 82 respectively mounted on two arms 83 and 84 of a clamp 85. Both rollers rotate around axes X 81 and X 82 that are parallel to direction B-B'. Clamp 85 can press rollers 81 and 82 one against the other.
  • Roller 81 lies against the front side 23 of fabric 2, whereas roller 82 lies against its backside 24.
  • Roller 82 is provided with needles 82A which can at least superficially penetrate within fabric 2, thus ensuring efficient guiding of fabric 2 by the pair of rollers 81 and 82.
  • rollers 81 and 82 exert a locking effort E on fabric 2 that can only move along direction A-A' but is locked along direction B-B'.
  • This effort E prevents the fabric to run obliquely due to the friction forces occurring when one yarn 31 is pulled out of the loops of a row of loops on front side 23.
  • Effort E is basically a pinching effort.
  • unit 52 it is possible to resist friction forces between yarns 31 and loops of fabric 2 that could be prejudicial to the handling of the fabric 2 in the loom.
  • clamp 85 forms a gripper sub-unit which is movable parallely to direction B-B' and is piloted by a linear actuator 86 in order to correct the position of the fabric along the direction B-B' in case it deviates from its normal path.
  • a contact sensor 90 is provided on bracket 53.
  • Sensor 90 delivers to an electronic control unit 100, a signal S 90 representative of the position of edge 21 along direction B-B', next to pulley 56.
  • Unit 100 generates, on the basis of signal S 90 , an electronic control signal S 100 which is sent to actuator 86 in order to position clamp 85 along direction B-B' in relation with the actual position of edge 21.
  • the clamp 85 is moved by the actuator 86 along direction B-B' with the amount of the shift of position of edge 21 so that edge 21, recovers its normal position.
  • clamp 85 moves towards edge 22 and comes to a point where it is necessary to bring it back to a position that is closer to the opposite edge 21 of fabric 2, in order to avoid that the rollers 81 and 82 leave the fabric, which would make effort E inefficient.
  • unit 52 is periodically deactivated and clamp 85 is opened.
  • rollers 81 and 82 are moved by actuator 86 towards a center zone of fabric 2, that is towards edge 21.
  • Clamp is then closed so that effort E is exerted closer to the center of fabric 2.
  • a sensor e.g. a switch, can be used to detect when rollers 81 and 82 come close to edge 22 and send a signal to unit 100 which then controls clamp 85 and actuator 86 to deactivate unit 52 and move the rollers towards the center of fabric 2.
  • a protecting cover 87 is arranged between a beam 88 supporting actuator 86 and the back side 24 of fabric 2, in order to avoid direct contact with the needles 82A.
  • Draw-off unit 51 and locking unit 52 are offset from each other along direction A-A'. More precisely, rollers 81 and 82 are offset with respect to hook-forming part 68 along direction A-A', so that locking effort E is exerted on a part of fabric 2 whose auxiliary weft yarns 31 have already been pulled out.
  • ⁇ 5 the distance between items 68, next to edge 21, and 81-82, next to edge 22, along direction A-A'.
  • Distance ⁇ 5 can have a value between 10 and 40 mm, for a fabric having a width l 2 between 2 and 4 m.
  • Unit 52 is located upward of unit 51, so that effort E is exerted on a part of fabric 8 where auxiliary weft yarns 31 have already been drawn-off by unit 51. Therefore, effort E does not brake or lock weft yarns 31 when they are pulled out of fabric 2 by gripper 65. In particular, needles 82A do not interfere with weft yarns 31.
  • false selvedge 25 In order for the hook part 68 of arm 66 to efficiently pull a weft yarn 31 out of fabric 2, it is necessary that the part of this weft yarn that belongs to false selvedge 25 is not pulled out of this false selvedge. In other words, false selvedge 25 must hold one end of each yarn 31 strongly enough to resist the traction T 1 exerted by the hook part 68.
  • auxiliary weft yarns are woven with two series of warp yarns 19A and 19B.
  • a first series of warp yarns 19A extends substantially perpendicularly to the auxiliary weft yarns 31 and on a same side of these yarns, on the backside of these yarns on the example of figure 8 .
  • a second series of warp yarns 19B extend around weft yarns 31 and warp yarns 19A. More precisely, each warp yarn 19B crosses each weft yarn 31 on the side opposite to warp yarns 19A. That is, if the warp yarns 19A are on the backside of the weft yarns 31 on figure 8 , the warp yarns 19B cross weft yarns 31 on their front side. Moreover, the warp yarns 19B go around the warp yarns 19A on their backside, that is on their side opposite the weft yarns 31. In the weaving process, warp yarns 19A and 19B follow a Leno type weave.
  • the speed S of carriage 58 in its movement from the position of figure 4 to the position of figure 2 progressively increases from a first value S 0 equal to 0 to a second maximum value S max .
  • carriage 58 moves with a relatively low speed when high friction forces exist between an auxiliary weft yarn 31 and the loops of fabric 2 due to the fact that weft yarn 31 is held within the loops on most of its length.
  • Yam 31 is then subjected to a low jerk. Then, as the weft yarn 31 comes out of the loops of fabric 2, friction forces decrease and the speed of carriage 58 increases. Therefore, auxiliary weft yarns 31 are extracted from the main part of the fabric 2 in a progressive way.
  • carriage 58 After a predetermined period of time ⁇ t 1 which corresponds to the first part M1 of its movement, carriage 58 reaches a maximum speed S max where weft yarn 31 can be pulled out rapidly from the loops since only a relatively small part of each weft yarn 31 is still engaged within some of the loops. Carriage 58 keeps this maximum speed during a second part M2 of its movement, for a period of time ⁇ t 2 . In a third part M3 of the carriage movement, the carriage reverses its direction of travel and, in a fourth part M4, it decelerates on its way back to the position of figure 4 .
  • the duration ⁇ t 3 and At 4 of the third and fourth parts M3 and M4 of the carriage movement can be short since the inertia of carriage 58 is low.
  • the maximum speed S' max reached by the carriage 58 on its way back to its position of figure 4 has a value higher than S max , since no auxiliary weft yarn is handled during third and fourth parts M3 and M4 of its movement.
  • the lower curve represents, as a function of time, the position P of carriage 58 and gripper 65 between a first end position P 1 where they are next to edge 21, as shown on figure 4 , and a second end position P 2 where they are away from fabric 2, as shown on figure 2 .
  • the carriage 58 At the end of the first part M1 of the movement, the carriage 58 reaches an intermediate position P A which is closer to position P 2 than to position P 1 .
  • the path between positions P 1 and P A corresponds to more than 50% of the total path between position P 1 and position P 2 .
  • the carriage 58 and the gripper 65 reach their maximum speed S max after ⁇ t 1 , that is when the carriage has reached position P A where it has travelled more than 50% of its path between the end positions P 1 and P 2 .
  • each auxiliary weft yarn 31 is progressively drawn out of the fabric 2, in particular in part M1 of its movement where it undergoes a high tension since it goes through many loops. Since the path between P 0 and P A represents more than 50% of the total path between P 1 and P 2 , an auxiliary weft yarn reaches its maximum extraction speed S max when it is already more than 50% out of the fabric, that is when its tension has decreased. Heating of the auxiliary weft yarns is thus relatively low, as compared to what happens with looms of the prior art, and the risk that the auxiliary weft yarn cuts one or several loops, which can result from the speed and tension of the weft yarns in the prior art, is reduced.
  • the gripper arm 66 is provided with a hook part 68 where a pulley 69 is incorporated within a support member 70.
  • the external surface 69A of the pulley 69 is adapted to receive an auxiliary weft yarn 31.
  • Pulley 69 is mounted on arm 66 thanks to a roller bearing. Its axis of rotation X 69 is perpendicular to a longitudinal axis X 66 of arm 66.
  • the carriage 58 is "passive", in so far as it does not carry any actuator to drive a clamp or anything similar. Therefore, carriage 58 can be light and move at a high speed.
  • the locking unit 52 no movement along the direction B-B' results from the friction forces induced by the sliding movement of the auxiliary weft yarns 31 within the loops.
  • the movement of the carriage is inline with the auxiliary weft yarns 31 in the fabric, so that friction between the auxiliary weft yarns and the loops can be minimized.
  • the draw-off unit can be located on the taker-rapier side of the weaving machine, whereas the locking unit is located on the bringer-rapier side.
  • the draw-off unit can be located on the bringer-rapier side, whereas the locking unit is located on the taker-rapier side.
  • the invention has been represented on a single-piece loom 1. It can also be implemented with a face-to-face weaving loom where loop-carpets or loop-and-pile carpets can be woven. In the case of face-to-face weaving, the device can include two draw-off units next to one edge of the fabric and one or two locking unit next to the other edge.
  • the contact sensor 90 may be located next to edge 21 or next to edge 22 or two sensors can be used.
  • Sensor 90 is represented on the figures as a mechanical sensor. However, other kinds of sensor can be used, e.g. optical sensors.
  • the gripper 65 can pull several such yarns at a time, e.g. five or six.
  • any other type of electrical, hydraulic or pneumatic linear actuator may be used to drive the hook forming gripper 65.

Claims (14)

  1. Vorrichtung (50) zum Ziehen von Hilfsschussfäden (31) aus einem Gewebe (2) in einem Webstuhl (1), welche Vorrichtung aufweist:
    - zumindest eine Zieheinheit (51), die sich neben einer ersten Längskante (21) des Gewebes befindet und Mittel (65) zum Ausüben einer Zugbeanspruchung (T1) auf zumindest einen Hilfsschussfaden hat, und
    - zumindest eine Sperreinheit (52), die ausgebildet ist zum Halten des Gewebes in seiner Lage entlang einer Richtung (B-B'), die im Wesentlichen parallel zu den Schussfäden (31) in dem Gewebe (2) ist,
    dadurch gekennzeichnet, dass die Sperreinheit (52) eine Greifer-Subeinheit (85) und Antriebsmittel (86), die ausgebildet sind zum Bewegen der Greifer-Subeinheit entlang einer Richtung (B-B'), die im Wesentlichen parallel zu den Schussfäden (31) in dem Gewebe (2) ist, aufweist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Sperreinheit (52) ausgebildet ist, eine Sperrbeanspruchung (E) auf das Gewebe (2) und neben einer zweiten Längskante (22) des Gewebes auszuüben.
  3. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass sie einen Sensor (90), der ausgebildet ist zum Erfassen der Position zumindest einer Längskante (21, 22) des Gewebes (2), und Mittel (100), die ausgebildet sind zum Steuern (S100) der Antriebsmittel (86) der Sperreinheit (85) in Beziehung zu einem Ausgangssignal (S90) des Sensors, aufweist.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Greifer-Subeinheit (85) zwei Rollen (81, 82) und Mittel (85) zum Gegeneinanderdrücken der Rollen aufweist.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sperreinheit (52) entlang einer Vorwärtsrichtung (A A') des Gewebes in dem Webstuhl (1) mit Bezug auf die zieheinheit (51) versetzt ist (Δ5).
  6. Vorrichtung nach einem der vorhergehenden An-, sprüche, dadurch gekennzeichnet, dass die Zieheinheit (51) einen Schlitten (58) enthält, der mit einem hakenbildenden Greifer (65) versehen ist und durch Antriebsmittel (54, 55) entlang einer Richtung (X53, B-B') im Wesentlichen parallel zu den Schussfäden (14, 31) in dem Gewebe (2) bewegt wird.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der hakenbildende Greifer (65) mit einer Riemenscheibe (69) versehen ist, die drehbar durch ein Lager (71) gehalten wird und eine Aufnahmefläche (69A) für zumindest einen Hilfsschussfaden (31) bildet.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Haspel (59) enthält, die für das Aufwickeln einer speziellen Hilfswebkante (25), deren Schussfäden ausschließlich durch Hilfsschussfäden (31) gebildet sind, bestimmt ist.
  9. Webstuhl (1), der mit einer Hilfsschussfaden-Ziehvorrichtung (50) nach einem der vorhergehenden Ansprüche ausgerüstet ist.
  10. Verfahren zum Ziehen von Hilfsschussfäden (31) aus einem Gewebe (2) in einem Webstuhl (1), bei dem alle Hilfsschussfäden in der Höhe einer ersten Längskante (21) des Gewebes durch zumindest eine Zieheinheit (51), die sich neben der ersten Längskante des Gewebes befindet und Mittel (65) zum Ausüben einer Ziehbeanspruchung (T1) auf zumindest einen Hilfsschussfaden hat, aus dem Gewebe gezogen werden, wobei das Gewebe durch eine Sperreinheit (52) entlang einer Richtung (B-B') im Wesentlichen parallel zu Schussfäden (51) in dem Gewebe (2) in seiner Lage gehalten wird, dadurch gekennzeichnet, dass die Sperreinheit (52) eine Greifer-Subeinheit (85) und Antriebsmittel (86), die ausgebildet ist zum Bewegen der Greifer-Subeinheit entlang dieser Richtung (B-B') als eine Funktion eines Signals (S90) eines Sensors (90), das für die Position einer Längskante (21, 22) des Gewebes (2) entlang dieser Richtung repräsentativ ist, aufweist.
  11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass eine Sperrbeanspruchung (E) auf das Gewebe (2) neben einer zweiten Längskante (22) des Gewebes ausgeübt wird, wenn zumindest ein Hilfsschussfaden aus dem Gewebe gezogen wird (T1).
  12. Verfahren nach einem der Ansprüche 10 oder 11, dadurch gekennzeichnet, dass die Hilfsschussfäden (31), wenn sie aus dem Gewebe gezogen werden, teilweise in Eingriff mit einer Hilfswebkante (25), die mit allen Hilfsschussfäden (31) und mit einigen bestimmten Kettfäden (19A, 19B) gemäß einem Leno-Webtyp gewebt ist, bleiben.
  13. Verfahren nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass die Hilfsschussfäden durch einen Greifer (65) gezogen werden, der zwischen zwei Endpositionen (P1, P2) entlang einer Richtung (X53), die im Wesentlichen zu den Schussfäden (14, 31) in dem Gewebe (2) parallel ist, mit einem Geschwindigkeitsprofil (M1-M4) derart bewegt wird, dass seine Geschwindigkeit von einem ersten Wert (S0) zu einem zweiten Wert (Smax) zunimmt, wenn sich der Greifer von dem Gewebe wegbewegt, und derart, dass der Greifer seinen zweiten Geschwindigkeitswert (Smax) an einer Position (PA) erreicht, an der er sich mehr als 50% seines Weges zwischen einer ersten Endposition (P1) des Greifers (65), die neben einer Kante (21) des Gewebes ist, und einer zweiten Endposition (P2) des Greifers von dieser Kante wegbewegt hat.
  14. Verfahren nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass die Hilfsschussfäden (31) durch einen hakenbildenden Greifer (65) aus dem Gewebe (2) gezogen werden, der durch einen Schlitten (58) mit einer hin- und hergehenden Translationsbewegung und mit einer Länge (L58), die etwa denselben Wert wie die Hälfte der Breite (I2) des Gewebes (2) hat, angetrieben wird.
EP20080166242 2008-10-09 2008-10-09 Vorrichtung und Verfahren zum Ausziehen der Hilfsschüsse und Webmaschine mit einer derartigen Vorrichtung Active EP2175057B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20080166242 EP2175057B1 (de) 2008-10-09 2008-10-09 Vorrichtung und Verfahren zum Ausziehen der Hilfsschüsse und Webmaschine mit einer derartigen Vorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080166242 EP2175057B1 (de) 2008-10-09 2008-10-09 Vorrichtung und Verfahren zum Ausziehen der Hilfsschüsse und Webmaschine mit einer derartigen Vorrichtung

Publications (2)

Publication Number Publication Date
EP2175057A1 EP2175057A1 (de) 2010-04-14
EP2175057B1 true EP2175057B1 (de) 2011-06-15

Family

ID=40351678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080166242 Active EP2175057B1 (de) 2008-10-09 2008-10-09 Vorrichtung und Verfahren zum Ausziehen der Hilfsschüsse und Webmaschine mit einer derartigen Vorrichtung

Country Status (1)

Country Link
EP (1) EP2175057B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9416467B2 (en) 2012-01-24 2016-08-16 Nike, Inc. Three-dimensional weaving system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013112684A1 (en) 2012-01-24 2013-08-01 Nike International Ltd. Intermittent weaving splicer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191013632A (en) * 1910-06-06 1911-03-23 Edward Hollingworth Improved Temple or Spreader for Pile Fabric Looms.
GB372132A (en) * 1931-06-15 1932-05-05 Peltzer Gebr Akt Ges Method for the production of double warp pile fabrics woven with double shuttles
GB428460A (en) * 1933-11-09 1935-05-09 Isaac Fred Harvey Improvements relating to looms for weaving pile fabrics
DE4243237C2 (de) * 1992-12-19 1996-07-11 Saechsisches Textilforsch Inst Verfahren und Vorrichtung zur Herstellung von Schlingenpol-Doppelgewebe ohne Schlingenschußfäden
DE19601099A1 (de) * 1996-01-13 1997-07-17 Girmes Gmbh Verfahren zum Herstellen von EpinglE-Ware
DE29604236U1 (de) * 1996-03-07 1997-07-03 Kneitz Wilhelm & Co Ag Webmaschine für ein schlaufenbesetztes Gewebe
BE1014269A3 (nl) 2001-06-29 2003-07-01 Construma Nv Werkwijze en inrichting voor het uittrekken van verloren inslagdraden uit een weefsel.
EP1375715B1 (de) * 2002-06-24 2006-03-22 SCHÖNHERR Textilmaschinenbau GmbH Verfahren und Doppelflor-Webmaschine zur Herstellung von gemustertem Polgewebe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9416467B2 (en) 2012-01-24 2016-08-16 Nike, Inc. Three-dimensional weaving system

Also Published As

Publication number Publication date
EP2175057A1 (de) 2010-04-14

Similar Documents

Publication Publication Date Title
Gandhi The fundamentals of weaving technology
US10400365B2 (en) Two-dimensional fabric and method for the production thereof
EP2175057B1 (de) Vorrichtung und Verfahren zum Ausziehen der Hilfsschüsse und Webmaschine mit einer derartigen Vorrichtung
JP2018524491A (ja) 織機
CN109208158B (zh) 在片梭织机中不使用假边的纬纱操作装置
US20210238780A1 (en) Weaving method, weft selector for implementing such a method and weaving loom incorporating such a weft selector
JP3455538B2 (ja) 小幅織機用ひ投げ針及び小幅織機
CN113122999A (zh) 一种自动寻位可变幅宽引纬装置及其工作方法
CN101389798B (zh) 用于保持在织机尤其喷气织机起动过程之后引入的纬纱的方法和设备
JP3425432B2 (ja) テリー織機
JPH06240541A (ja) フリンジキャッチャを有する継ぎ目織り機
US7231943B2 (en) Device for a weaving machine
Maity et al. Recent developments in rapier weaving machines in textiles
CN211848311U (zh) 一种用于纬纱束编织的剑杆织机
JPH09268450A (ja) 織機における捨耳形成方法及び装置
CN205035557U (zh) 一种天鹅绒布生产装置
EP3775342B1 (de) Abstandsgewebe, verfahren zur herstellung des abstandsgewebes und webmaschine zur durchführung des verfahrens
US4590973A (en) Loom and method of weaving
CN210711921U (zh) 一种钢筘装置
CN110760979A (zh) 一种用于纬纱束编织的剑杆织机及其操作方法
EP1675983B1 (de) Vorrichtung zur kontrolle der kettfäden in einer webmaschine bei der herstellung von drehergeweben
CN1401026A (zh) 在织造时使经纱片偏转的方法及织机
EP1614784B1 (de) Unterstützungssystem einer Schneidanlage an eine Doppeltstück-Webemaschine
CN211848312U (zh) 一种用于剑杆织机的接纬传剑机构
CN211446062U (zh) 一种用于剑杆织机的接纬剑

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20101014

AKX Designation fees paid

Designated state(s): BE DE IT TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE IT TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008007574

Country of ref document: DE

Effective date: 20110804

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20120316

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008007574

Country of ref document: DE

Effective date: 20120316

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20221020

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20230928

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231027

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20231027

Year of fee payment: 16