EP3014004B1 - Method and device for inserting two weft threads at the same time - Google Patents

Method and device for inserting two weft threads at the same time Download PDF

Info

Publication number
EP3014004B1
EP3014004B1 EP14731945.3A EP14731945A EP3014004B1 EP 3014004 B1 EP3014004 B1 EP 3014004B1 EP 14731945 A EP14731945 A EP 14731945A EP 3014004 B1 EP3014004 B1 EP 3014004B1
Authority
EP
European Patent Office
Prior art keywords
weft thread
presenting
weft
gripper
thread
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
EP14731945.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3014004A1 (en
Inventor
Denis Moeneclaey
Ronny Dewitte
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 EP3014004A1 publication Critical patent/EP3014004A1/en
Application granted granted Critical
Publication of EP3014004B1 publication Critical patent/EP3014004B1/en
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
    • 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
    • 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

Definitions

  • the invention relates to a method and a device for inserting weft threads into a shed of a weaving machine by means of a gripper device, wherein at least two weft threads are inserted at the same time.
  • the invention further relates to a weaving machine.
  • Typical gripper devices comprise a feed gripper and a receiving gripper, which receiving gripper takes over the weft threads from the feed gripper.
  • EP 0 633 336 A1 shows a method and a device for inserting two weft threads at the same time, wherein a first weft thread is permanently threaded onto a feed gripper, and a second weft thread is presented to the feed gripper and taken up by the feed gripper.
  • the weft threads are guided along separate running paths, in order to prevent entangling of the weft threads. Due to the permanently threaded first weft thread, the choice of a weaving pattern to be woven is very limited.
  • WO 2009/135636 A1 shows a weaving machine with a presenting device for selecting two weft threads from a plurality of weft threads according to a weaving pattern.
  • a gripper device shown in WO 2009/135636 A1 comprises a receiving gripper and a feed gripper. For inserting two weft threads at the same time, the receiving gripper and/or the feed gripper are provided with a thread separator, which thread separators allow two weft threads to be separated from each other while these two weft threads are clamped.
  • WO 2010/142264 A1 also discloses a gripper weaving machine arranged for inserting two weft threads at the same time, wherein two weft threads are selected from a number of weft threads, are presented to a feed gripper, are clamped by the feed gripper, and are inserted into a shed.
  • the two weft threads are guided and clamped in the feed gripper by separate elements, wherein the separate elements are arranged to position the two weft threads in such a way that these two weft threads remain separated during the clamping of the weft threads in the clamping area.
  • a method for inserting weft threads into a shed of a weaving machine by means of a gripper device comprises presenting the first weft thread and the second weft thread to the gripper device, moving the gripper device to take up the first weft thread and the second weft thread and to insert the first weft thread and the second weft thread at the same time into a shed, and after the gripper device has taken up the first weft thread and the second weft thread and before crossing of warp threads, driving an adjustment device, which is provided at a weft thread insertion side of the weaving machine, to move the first weft thread at the weft thread insertion side of the weaving machine transversally to the insertion direction and away from the second weft thread, so that, when the first weft thread and/or the second weft thread are caught by crossing warp threads
  • a device for inserting weft threads into a shed of a weaving machine comprises a presenting device and a gripper device, wherein the presenting device is arranged to present the first weft thread and the second weft thread to the gripper device, wherein the gripper device is arranged to take up the first weft thread and the second weft thread and to insert the first weft thread and the second weft thread at the same time into a shed, and wherein the device further comprises an adjustment device provided at a weft thread insertion side of the weaving machine, wherein the adjustment device is arranged to move the first weft thread at the weft thread insertion side of the weaving machine transversally to the insertion direction and away from the second weft thread after the gripper device has taken up the first weft thread and the second weft thread and before crossing of warp threads, so that, when the first weft thread and/or the second weft thread are caught by crossing warp threads,
  • the first and the second weft thread inserted at the same time into the shed are referred to as conjointly inserted weft threads.
  • the section of the weft threads inserted into a shed is referred to as inserted length of the weft threads.
  • the inserted weft threads are held by the gripper device.
  • at least one thread separator is provided at the gripper device for keeping the leading ends of the inserted weft threads at a distance from each other.
  • the first weft thread is moved at the weft thread insertion side of the weaving machine transversally to the insertion direction and away from the second weft thread.
  • the leading ends of the inserted weft threads are still held by the gripper device when moving the first weft thread at the weft thread insertion side. Due to the relative movement of the first weft thread away from the second weft thread at the weft thread insertion side, the inserted weft threads are kept at a distance from each other over the entire inserted length of the weft threads, wherein in an embodiment the distance between the inserted weft threads decreases towards the section where the inserted weft threads are held by the gripper device.
  • the gripper device has moved to a position at least substantially outside the shed to avoid an interference with the crossing warp threads.
  • the first weft thread and the second weft thread are distanced from each other over the inserted length of the first weft thread and the second weft thread.
  • the gripper device has moved to a position at least substantially outside the shed, the inserted length of the weft threads essentially coincides to the width of the fabric.
  • the width of a fabric is defined as the usable area of the fabric.
  • the "width of the fabric” does not necessarily include the area of the selvedge fabric.
  • the gripper device may still be situated between the selvedge warp threads at the instant of crossing of warp threads.
  • the weft threads are presented to the gripper device at a distance from each other in the direction of movement of a reed beating up the weft threads.
  • the distance between the first weft thread and the second weft thread in the direction of movement of the reed is at least substantially maintained at the weft thread insertion side, wherein the first weft thread is moved transversally to the insertion direction and transversally to the direction of movement of the reed at the weft thread insertion side of the weaving machine.
  • the first weft thread is moved at the weft thread insertion side of the weaving machine transversally to the insertion direction, away from the second weft thread, and towards the fell line or away from the fell line, so that the distance of the first weft thread from the fell line differs from the distance of the second weft thread from the fell line over the entire inserted length of the first weft thread and the second weft thread at the instant warp threads cross, and the weft thread closer to the fell line is caught first by the crossing warp threads.
  • the adjustment device is arranged and/or driven to move the first weft thread at the weft thread insertion side of the weaving machine transversally to the insertion direction, towards a fell line and away from the second weft thread.
  • the first weft thread is moved at least substantially in the direction of movement of the reed during beat up.
  • the reed is moved substantially in horizontal direction.
  • the adjustment device is arranged to move the first weft thread at the weft thread insertion side substantially in horizontal direction.
  • the direction of movement of the first weft thread may deviate from the direction of movement of the reed during beat up within tolerances, wherein the direction of movement is chosen so that an interference with warp threads forming the shed is avoided. Such an interference is negatively effecting the insertion of the weft threads.
  • the warp threads may support a movement of the first weft thread towards the fell line.
  • the inserted weft threads form an angle opening towards the weft thread insertion side.
  • the angle formed by the first weft thread and the second weft thread depends on the relative movement of the first weft thread at the weft thread insertion side. Preferably, an angle of less than 45° is formed between the first weft thread and the second weft thread.
  • the weft thread closer to the fell line is caught first by the crossing warp threads. After the weft threads are caught by the warp threads, a relative movement of the first weft thread and the second weft thread, which may cause a partial crossing of weft threads, is avoided.
  • the reed comes into contact with one of the weft threads and this weft thread is moved together with the reed towards the second weft thread, at least the weft thread closer to the fell line is already at least partly caught between the crossing warp threads. In result, during beat up the weft threads do not move over each other.
  • the gripper device comprises a feed gripper and a receiving gripper, wherein the feed gripper takes up the presented weft threads and brings the inserted weft threads into the shed, transfers the inserted weft threads to the receiving gripper, preferably halfway along the shed, and the receiving gripper then brings the inserted weft threads to the weft thread arrival side.
  • the gripper device comprises only a receiving gripper or only a feed gripper.
  • the adjustment device is arranged and/or driven to move the first weft thread transversally to the insertion direction and away from the second weft thread after the receiving gripper has taken over the first weft thread and second weft thread from the feed gripper.
  • the first weft thread is preferably moved at the weft thread insertion side only after the gripper device has moved far enough inside the shed.
  • the adjustment device is arranged and/or driven to move the first weft thread over an element of the gripper device, so that the first weft thread and the second weft thread extend along both sides of said element of the gripper device between a weft thread holding region of the gripper device and the weft thread insertion side.
  • the gripper device comprises a feed gripper and a receiving gripper
  • the adjustment device is driven to move the first weft thread over the feed gripper, so that the first weft thread and the second weft thread extend along both sides of the feed gripper between the receiving gripper and the weft thread insertion side.
  • weft threads are presented to the gripper device, more particular to the feed gripper, in such way that the gripper device takes up the weft thread between the fell line and a thread supply, wherein the taken up weft threads are moved by the feed gripper into the shed and extend at the side of the feed gripper facing away from the fell line.
  • the first weft thread that is moved through the shed together with the second weft thread by the receiving gripper, in preferred embodiments is forced to move over the feed gripper to extend at the other side of the feed gripper, this means at the side facing the fell line.
  • the first weft thread By moving the first weft thread so that the two weft threads extend at both sides of the feed gripper, there is always a distance between the inserted weft threads in the direction of movement of the reed during beat up and before crossing, this means in horizontal direction.
  • the first weft thread is moved by the adjustment device after the receiving gripper has taken over the inserted weft threads, the movement does not interfere with a clamping of the weft threads in the feed gripper.
  • the first weft thread is moved by the adjustment device immediately after the receiving gripper has taken over the inserted weft threads and while the receiving gripper is still moving through the shed.
  • the adjustment device is integrated in the presenting device, wherein in a first period in the weaving cycle the presenting device is driven to present the first weft thread and the second weft thread to the gripper device, and wherein in a second period in the weaving cycle, after the gripper device has taken up the first weft thread and the second weft thread and before crossing of warp threads, the presenting device is driven to move the first weft thread at the weft thread insertion side of the weaving machine transversally to the insertion direction and away from the second weft thread, so that when the first weft thread and/or the second weft thread are caught by crossing warp threads, the first weft thread and the second weft thread are distanced from each other over their inserted length.
  • the presenting device comprises a plurality of presenting members corresponding to a plurality of weft threads from which a first weft thread and a second weft thread are selected, wherein the plurality of presenting members is portioned in at least a first and a second set of presenting members, each set comprising at least one presenting member, wherein in the first period one presenting member of the first set of presenting members is moved to a presenting position for presenting the first weft thread to the gripper device and one presenting member of the second set of presenting members is moved to a presenting position for presenting the second weft thread to the gripper device.
  • the presenting device comprises two presenting members for presenting two weft threads. In other embodiments, more than two weft threads are prepared for an insertion, wherein for each insertion, a first weft thread and a second weft thread are selected from the plurality of weft threads.
  • the at least one presenting member of the first set of presenting members presenting the first weft thread in the first period in the weaving cycle is driven to move the first weft thread at the weft thread insertion side of the weaving machine transversally to the insertion direction and away from the second weft thread, so that when the first weft thread and/or the second weft thread are caught by crossing warp threads, the first weft thread and the second weft thread are distanced from each other over their inserted length.
  • presenting needles are provided as presenting members.
  • the presenting members comprise a thread guide, in particular a needle eye, for guiding the associated weft thread. Presenting needles with needle eyes and devices for a substantially translational movement of the needle eyes are disclosed in EP 0 598 264 A1 .
  • said presenting member of the first set of presenting members is moved relative to said presenting member of the second set of presenting members in order to move the first weft thread at the weft thread insertion side of the weaving machine transversally to the insertion direction and away from the second weft thread.
  • a guide element for the first weft thread, in particular a presenting member, of the presenting device is at least substantially translationally moved.
  • the thread guide of said presenting member of the first set of presenting members is moved in the presenting position and/or out of the presenting position at least substantially in parallel to the direction of movement of a reed during beat up.
  • the thread guide of said presenting member of the first set of presenting members is moved in a diagonal direction, wherein a displacement of the thread guide of said presenting member in horizontal direction exceeds its displacement in vertical direction.
  • the needle eyes of the presenting needles of the first set of presenting needles are moved in a direction that is inclined more towards a horizontal plane.
  • the presenting needles of the second set of presenting needles in an embodiment are arranged in a known manner and the needle eyes of the presenting needles of the second set of presenting needles are moved in a more vertical direction compared to the presenting needles of the first set of presenting needles.
  • the presenting members are moved at least substantially in the same direction, wherein the movement of the presenting members differs in timing and/or in distance, so that when catching the first weft thread and/or the second weft thread by crossing warp threads, the first weft thread and the second weft thread are distanced from each other over their inserted weft length.
  • the second weft thread is presented to the gripper device at a position that is further distanced from the fell line in the direction of movement of the reed during beat up than the position in which the first weft thread is presented.
  • the presenting member presenting the first weft thread is moved out of the presenting position and towards the fell line before the presenting member presenting the second weft thread is moved.
  • a weaving machine comprising a control unit arranged for carrying out the described method and/or comprising the described device.
  • Figure 1 is a schematic perspective view of a part of a weaving machine 1 with a device 2 according to the invention comprising a gripper device 3 and a presenting device 4 for the presenting of weft threads to the gripper device 3.
  • a first weft thread 5 and a second weft thread 6 are inserted at the same time from a weft thread insertion side 71.
  • the weaving machine 1 comprises a reed 10 for beating up the inserted weft thread 5, 6.
  • the presenting device 4 comprises a plurality of presenting members 41 to 46 which are movable between a rest position and a presenting position.
  • six presenting members 41 to 46 are provided.
  • the plurality of presenting members 41 to 46 are portioned in a first set of presenting members comprising three presenting members 41 to 43 and a second set of presenting members comprising three presenting members 44 to 46.
  • a presenting member 44 of the second set of presenting members is shown in the presenting position, while the presenting members 42, 43, 45 and 46 are shown in the rest position.
  • One presenting member 41 of the first set of presenting members is shown in an adjustment position, which in the embodiment shown almost coincides with the rest position.
  • a first weft thread 5 is presented by the presenting member 41 of the first set of presenting members and a second weft thread 6 is presented by the presenting member 44 of the second set of presenting members.
  • a first weft thread 5 is presented by the presenting member 41 of the first set of presenting members and a second weft thread 6 is presented by the presenting member 44 of the second set of presenting members.
  • just two weft threads 5 and 6 are shown, which in the exemplary embodiment are presented by associated presenting members 41 and 44.
  • the presenting members 41 to 46 are presenting needles having needle eyes as thread guides.
  • the gripper device 3 comprises a feed gripper 30 and a receiving gripper 31 (not shown in Figure 1 ).
  • the gripper device 3 used has the features of gripper devices known from WO 2009/135636 A1 and/or WO 2010/142264 A1 .
  • the features of the invention are not limited to gripper devices shown in these applications.
  • the feed gripper 30 is arranged to take up the first weft thread 5 and the second weft thread 6 and to insert the first weft thread 5 and second weft thread 6 at the same time into a shed 70 formed by warp threads 7.
  • the receiving gripper 31 takes over the inserted weft threads 5, 6 from the feed gripper 30 and brings the inserted weft threads to the weft thread arrival side 72 ( Figure 2 ), in other words the side opposite to the weft thread insertion side 71.
  • the feed gripper 30 is moved back to the weft thread insertion side 71.
  • the feed gripper 30 has moved back and is positioned almost outside of the shed 70.
  • the first weft thread 5 and the second weft thread 6 extend along both sides of the feed gripper 30 and are distanced from each other in a direction towards a fell line 80 over the inserted length of the weft thread 5, 6, in particular over the full inserted length of the weft threads. More particular, a distance of the inserted length of the first weft thread 5 from a fell line 80 is smaller than a distance of the inserted length of the second weft thread 6 from the fell line 80 at the instant of crossing of warp threads 7. Hence, when the first weft thread 5 and/or the second weft thread 6 are caught by crossing warp threads 7, the first weft thread 5 will be caught first by the crossing warp threads 7.
  • first weft thread 5 and the second weft thread 6 are distanced from each other in a direction towards the fell line 80 over the width of a fabric 8
  • the first weft thread 5 is moved relative to the second weft thread 6 at the weft thread insertion side 71, as will be explained in more detail with the reference to Figures 2 to 13 below.
  • the device 2 further comprises a support device 9 for weft threads 5, 6 comprising a thread separator 90 and a thread limiter 91.
  • the thread separator 90 of the support device 9 separates a support area for the first weft thread 5 from a support area of the second weft thread 6.
  • the support device 9 is known from WO 2009/135636 A1 and is described in more detail in this document.
  • Figures 2 and 3 are a top view and a side view, respectively, of a schematic and simplified representation of the device 2 shown in Figure 1 when presenting the weft threads 5, 6.
  • the presenting member 41 of the first set of presenting members is moved to a presenting position for presenting the first weft thread 5 to the feed gripper 30 and the presenting member 44 of the second set of presenting members is moved to a presenting position for presenting the second weft thread 6 to the feed gripper 30.
  • the first weft thread 5 and the second weft thread 6 are separated by means of the support device 9 comprising the thread separator 90.
  • the presenting member 41 presenting the first weft thread 5 is arranged and moved along a movement path that is more inclined towards a plane of the fabric 8, coinciding in the embodiment shown with a horizontal plane, than the presenting member 44 presenting the second weft thread 6.
  • the receiving gripper 31 is moved towards the shed and the reed 10 is in its backward position.
  • Figures 4 and 5 are a top view and a side view, respectively, of a schematic and simplified representation of the device 2 after the feed gripper 30 has taken up the weft threads 5, 6 presented.
  • the presenting member 41 of the first set of presenting members and the presenting member 44 of the second set of presenting members are maintained in the presenting position and only the feed gripper 30 is moved to take up the weft threads 5, 6.
  • a cutting device 11 is provided for cutting the weft threads 5, 6 from the trailing ends of previously inserted weft threads.
  • the receiving gripper 31 is moved inside the shed 70 to meet the feed gripper 30 and to take over the weft threads 5, 6.
  • the weft threads 5, 6 are guided by the feed gripper 30 in two distinct positions, which are distanced from each other in horizontal and in vertical direction, this means in a direction parallel to the direction of movement 12 of the reed 10 during beat up and in a direction transversally to the insertion direction 32 and transversally to the direction of movement 12 of the reed 10 during beat up.
  • Figure 6 is a top view of a schematic and simplified representation of the device 2 during taking over of the weft threads 5, 6 from the feed gripper 30 by the receiving gripper 31.
  • the presenting member 41 of the first set of presenting members and the presenting member 44 of the second set of presenting members are at this instant still maintained in the presenting position.
  • Figure 7 is a top view of a schematic and simplified representation of the device 2 after taking over of the weft threads 5, 6 from the feed gripper 30 by the receiving gripper 31.
  • the presenting member 44 of the second set of presenting members is at this instant still maintained in the presenting position.
  • the presenting member 41 of the first set of presenting members is moved relative to the presenting member 44 of the second set of presenting members into an adjustment position, which in the embodiment shown almost coincides with the rest position.
  • the first weft thread 5 is moved at the weft thread insertion side 71 of the weaving machine transversally to the insertion direction 32 and away from the second weft thread 6.
  • the presenting member 41 is part of an adjustment device 47, more particularly the adjustment device 47 comprises the presenting members 41 to 43 and their drives.
  • the first weft thread 5 is moved towards the fell line 80.
  • the inserted weft threads 5, 6 are held next to each other by the receiving gripper 31 and form an angle opening towards the weft thread insertion side 71, in particular a triangle.
  • the weft thread 5 is moved after take over by the receiving gripper 31 and during the insertion of the weft threads 5, 6.
  • the weft thread 5 is moved over the feed gripper 30, in particular over the element 33 of the feed gripper 30, so that the first weft thread 5 and the second weft thread 6 extend along both sides of the feed gripper 30 during the insertion by the receiving gripper 31.
  • the first weft thread 5 and the second weft thread 6 which are conjointly held by the receiving gripper 31 and are distanced from each other at the weft thread insertion side 71 form a triangle.
  • FIG 8 is a top view of the receiving gripper 31 used in the device 2.
  • the two weft threads 5 and 6 are preferably held in the receiving gripper 31 in two distinct positions, which positions are distanced from each other in horizontal direction, this means in a direction parallel to the direction of movement of the reed 10 during beat up.
  • a gripping position of the first weft thread 5 is closer to the fell line 80 (shown in Figure 7 ) than a gripping position of the second weft thread 6.
  • the first weft thread 5 is moved at the weft thread insertion side 71 towards the fell line.
  • the first weft thread 5 and the second weft thread 6 are distanced from each other over their entire inserted length.
  • Figures 9 and 10 are a top view and a side view, respectively, of a schematic and simplified representation of the device 2 when further inserting the weft threads 5, 6 by means of the receiving gripper 31.
  • the presenting member 44 of the second set of presenting members at this instant is held slightly above the presenting position.
  • the presenting member 41 of the first set of presenting members is already located in an adjustment position, which in the embodiment shown coincides with the rest position.
  • Figures 11 and 12 are a top view and a side view, respectively, of a schematic and simplified representation of the device 2 at the end of inserting the weft threads.
  • the presenting member 44 of the second set of presenting members has been moved to its rest position.
  • the thread guide 49 of the presenting member 44 is also moved in diagonal direction in the presenting position and out of the presenting position.
  • a displacement of the thread guide 49 of the presenting member 44 in vertical direction exceeds its displacement in horizontal direction.
  • a displacement of the thread guide 49 of the presenting member 44 does not or only marginally cause in a movement of the second weft thread 6 towards the fell line 80.
  • the first weft thread 5 and the second weft thread 6 are distanced from each other over the width of a fabric 8.
  • the weft threads 5 and 6 are caught by the warp threads 7, wherein the warp threads 7 prevent the weft threads 5 and 6 to move across each other.
  • Figures 13 and 14 are a top view and a side view, respectively, of a schematic and simplified representation of the device 2 shortly after beating up the inserted weft threads 5, 6.
  • the presenting member 41 of the first set of presenting members and the presenting member 44 of the second set of presenting members are in the adjustment position and the rest position, respectively.
  • the inserted weft threads 5 and 6 have been released by the receiving gripper 31 and are bound by the crossing warp threads 7.
  • the weft threads are woven in and the reed 10 is moved back in its backward position.
  • the same and/or other presenting members 41 to 46 are moved in a presenting position for a subsequent insertion.
  • the presenting member 44 of the second set of presenting members can be moved out of its presenting position to its rest position.
  • the presenting member 44 only moves during a third period of the weaving cycle and starting from an instant that the first weft thread 5 and the second weft thread 6 are moved away from each other and are already caught by the crossed warp threads 7.
  • the presenting member 41 as the presenting member 44 move more in horizontal direction, more particularly are moved more in horizontal direction than in vertical direction.
  • a control device 15 is provided for controlling the presenting device 4 and/or the adjustment device 47.
  • the presenting device 4 is also arranged for selecting the first weft thread and the second weft thread from a plurality of weft threads and for presenting the first weft thread and the second weft thread to the gripper device.
  • the second weft thread 6 is guided by the thread limiter 91 and extends during weft thread insertion substantially in parallel to the fell line 80. Due to the displacement of the first weft thread 5 at the weft thread insertion side 71, the inserted length of the first weft thread 5 forms an angle with the fell line 80. Therefore when moving a thread guide of the presenting member 41 towards the fell line 80 as shown in Figure 7 , an insertion path for the first weft thread 5 is longer than without moving the thread guide. When the first weft thread 5 is beaten up against the fell line 80 as shown in Figure 13 , the first weft thread 5 is again parallel to the second weft thread 6.
  • a weft thread tension of the first weft thread 5 is increased and the first weft thread 5 is elongated elastically during insertion and retracts when beaten up, so that no loops are formed in the weft thread 5.
  • additional weft thread is supplied from a weft thread supply to compensate for the longer insertion path, wherein the first weft thread 5 is pulled back by a thread compensator (not shown) at the weft thread insertion side 71.
  • the second weft thread 6 is released by the receiving gripper 31 before the first weft thread 5 is released by the receiving gripper 31, in order to further pull on the first weft thread 5 to stretch the first weft thread 5.
  • the weft threads 5, 6 are caught at the weft thread arrival side 72 using selvedge warp threads (not shown). In case a stretching of at least one of the inserted weft threads 5, 6 is necessary at the weft thread arrival side 72, the weft threads 5, 6 are caught only after the stretching is accomplished. Similar, an opener (not shown) for the receiving gripper provided at the weft thread arrival side 72 is controlled to ensure a stretching of the weft thread 5, 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP14731945.3A 2013-06-25 2014-06-17 Method and device for inserting two weft threads at the same time Active EP3014004B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2013/0444A BE1021697B1 (nl) 2013-06-25 2013-06-25 Werkwijze en inrichting voor het tegelijkertijd inbrengen van twee inslagdraden
PCT/EP2014/062755 WO2014206818A1 (en) 2013-06-25 2014-06-17 Method and device for inserting two weft threads at the same time

Publications (2)

Publication Number Publication Date
EP3014004A1 EP3014004A1 (en) 2016-05-04
EP3014004B1 true EP3014004B1 (en) 2019-04-03

Family

ID=49054157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14731945.3A Active EP3014004B1 (en) 2013-06-25 2014-06-17 Method and device for inserting two weft threads at the same time

Country Status (4)

Country Link
EP (1) EP3014004B1 (nl)
BE (1) BE1021697B1 (nl)
TR (1) TR201909171T4 (nl)
WO (1) WO2014206818A1 (nl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1303764B1 (it) * 1998-11-17 2001-02-23 S M I T S R L Societa Macchine Pinza di condotti per telai senza navetta particolarmente adatta perl'introduzione contemporanea di piu' trame nella bocca di ordito
EP2440697B1 (de) * 2009-06-10 2014-07-16 Lindauer Dornier Gesellschaft mbH Vorrichtung und verfahren zum schusseintrag an einer greiferwebmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3014004A1 (en) 2016-05-04
WO2014206818A1 (en) 2014-12-31
BE1021697B1 (nl) 2016-01-08
TR201909171T4 (tr) 2019-07-22

Similar Documents

Publication Publication Date Title
CN106367877B (zh) 编织织物的方法，该方法编织的网形的织物和编织机
JP5819097B2 (ja) ３次元製織のための織機およびその製織方法
JP2013518997A (ja) 補助緯糸効果を有する織物の製法及び織機
US9732450B2 (en) Giver rapier head, giver rapier, rapier weaving machine and method for inserting a weft thread in such a rapier weaving machine using such a giver rapier head
KR20180048693A (ko) 씨실을 홀딩, 급송, 및 직기 셰드에 삽입하기 위한 방법 및 장치를 구비한 직조기
EP2300651B1 (en) Receiving gripper, feed gripper and device for a gripper weaving machine
US7857012B2 (en) Method and needle webbing loom in order to weave a ribbon
EP3014004B1 (en) Method and device for inserting two weft threads at the same time
US6431223B1 (en) Bringer gripper for looms without shuttles
JP7017991B2 (ja) グリッパ織機における疑似耳部の無い緯糸操作装置
CN102575390B (zh) 用于重新张紧经纱层的经纱的张紧装置和方法
US3111966A (en) Method and apparatus for simultaneously weaving lengths of fabric
US9915015B2 (en) Selvedge forming device for a weft thread
EP3875649B1 (en) Weaving loom and method for weaving a multilayer fabric
US7694697B2 (en) Apparatus for forming a selvedge on a gripper weaving machine
EP3775342B1 (en) Distance fabric, a method of forming the distance fabric and a weaving machine for performing the method
US4655263A (en) Apparatus for presenting weft threads to the clamps of gripper rods in shuttleless looms
CN103069064A (zh) 单片梭编织机
JP6113912B2 (ja) 追加の緯糸エフェクトを有する織機で緯糸端部を挿入する方法
KR19990028606A (ko) 기계식 직기
BE1021814B1 (nl) Gevergrijperkop, gevergrijper, grijperweefmachine en werkwijze voor het inbrengen van een inslagdraad met een dergelijke gevergrijperkop in een dergelijke grijperweefmachine

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

17P Request for examination filed

Effective date: 20151022

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20181130

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1115868

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190415

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014043999

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190403

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1115868

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190803

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190704

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190803

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014043999

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

26N No opposition filed

Effective date: 20200106

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190617

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190630

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190617

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190630

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140617

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190403

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230519

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

Ref country code: DE

Payment date: 20230623

Year of fee payment: 10

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

Ref country code: TR

Payment date: 20230612

Year of fee payment: 10

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

Ref country code: BE

Payment date: 20230417

Year of fee payment: 10

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

Ref country code: IT

Payment date: 20230630

Year of fee payment: 10