EP3899121A1 - Bringer-greiferkopf, webmaschine mit einem solchen bringer-greiferkopf und verfahren zum doppelschusseintrag - Google Patents
Bringer-greiferkopf, webmaschine mit einem solchen bringer-greiferkopf und verfahren zum doppelschusseintragInfo
- Publication number
- EP3899121A1 EP3899121A1 EP19816672.0A EP19816672A EP3899121A1 EP 3899121 A1 EP3899121 A1 EP 3899121A1 EP 19816672 A EP19816672 A EP 19816672A EP 3899121 A1 EP3899121 A1 EP 3899121A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weft
- head
- rapier
- guide device
- bringer
- 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
Links
- 238000003780 insertion Methods 0.000 title claims abstract description 34
- 230000037431 insertion Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009941 weaving Methods 0.000 claims description 23
- 239000004744 fabric Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 241000845082 Panama Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/20—Constructional features of the thread-engaging device on the inserters
- 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
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/18—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick two weft inserters meeting at or near the middle of the shed and transferring the weft from one to the other
Definitions
- the invention relates to a bringer rapier head, a weaving machine with such a rapier rapier head and a method for double weft insertion.
- two weft threads are inserted into a shed at the same time using a bringer gripper.
- the two weft threads are transferred to a Holer gripper, which conveys the weft threads to the discharge side from the shed after they have been taken over.
- the bringer gripper moves out of the shed back to the entry page to pick up one or two weft threads again.
- the known bringer rapier heads have two guide devices, by means of which two weft threads are introduced into a shed at a distance from one another.
- the weft threads introduced into the shed at a distance from the bringer rapier head can be removed from the shed again in a disputed form, in the known systems, however, after the transfer to the Holer rapier head and release of the weft threads from the guide devices the spacer of the weft threads of the bringer gripper head, or this separate guidance of the one weft thread leaves a free choice of color, which is also known as a pic-pic system
- a so-called Texo-Bringer gripper head is known, for which for one
- a gripper clamp is present and a second guide device is provided for the second weft thread, which is spaced apart from the gripper clamp serving as the first guide device.
- a bringer rapier head has been developed, which is referred to as the panama bringer rapier head, which has a gripper clamp and, as a second guide device, has a closed eyelet which cannot be opened.
- the second weft which is the second through this eyelet
- Thread guide device is guided, secures the distance between the two weft threads even when the rapier hook head moves back out of the shed.
- WO 2010/142264 A1 describes a system for a double weft insertion, in which two weft threads are inserted into a shed by means of a bringer rapier head, the two weft threads being guided and clamped by separate elements in the bringer rapier head.
- the two weft threads are positioned in such a way that they remain separated from one another during the weft insertion. After transfer to the Holer rapier head, both weft threads are released so that the rapier rapier head can move back out of the shed. As a result, the two weft threads lose their spacing from one another and can therefore no longer be hit evenly at the binding point.
- WO 2014/206818 A1 describes a method and a device for a double-shot entry.
- the first weft thread of the two weft threads inserted into the shed at the same time is moved transversely to the insertion direction and away from the second weft thread by means of an adjustment device, so that twisting of both weft threads should not occur during insertion.
- the first weft thread and the second weft thread are kept at a distance at the head of the hook and the distance is increased during the insertion by means of an adaptation device.
- the spacing of the weft threads should be maintained until the shed closes and the gripper is arranged outside the shed.
- the weft threads have a varying distance from the binding point at the time the shed is closed. This unequal distance is intended to ensure that the part of the weft thread which is already closer to the binding point is already tied off and its slipping in the direction of the second weft thread is to be prevented.
- WO 2009/135636 A1 describes a bringer rapier, a holer rapier and a device for a rapier weaving machine which realizes a double weft insertion.
- Two weft threads are kept at a distance from one another by the weft thread separator, which has two stops and is arranged on one side of the bringer gripper, by means of the two stops.
- the bringer gripper transfers the weft threads held at a distance to the holer gripper, which clamps these weft threads while maintaining the distance and by moving backwards out of the shed on the
- the distance between the two weft threads is realized by the difference in height of the weft thread separator, which is formed by two sliding surfaces over which the respective weft thread slides.
- EP 1 135 548 B1 describes a bringer gripper for defenseless weaving machines, in particular for the simultaneous insertion of several weft threads into a shed.
- the bringer gripper receives at least two weft threads from bars, has a box-like hollow shape and has an upper cover with a notch in which the weft threads are inserted. A plurality of grooves are formed in this notch, each groove being for a weft.
- a gripper organ is there to take the weft threads and transfer them to a Holer gripper in the shed.
- the weft threads are each arranged along relatively angled feed paths with respect to the axial movement of the bringer gripper so that they remain arranged in the throats.
- the two weft threads are, for example, in the case of a double weft insertion arranged relatively close to each other, so that touching and sliding over the weft threads cannot be completely avoided when striking the binding point.
- the object of the invention is to provide a bringer gripper head which has two for a double-shot entry
- Double weft insertion has a first guide device which guides a first weft thread and a second guide device which guides a second weft thread. Both guide devices are arranged at a distance from one another in the direction of insertion of the weft threads at the front end of the bringer rapier head. The distance extends essentially transversely to the entry direction, so that the weft threads in the shed with respect to the binding point at which they are finally struck by means of the sley,
- the first weft thread is guided in the first guide device, which is designed to be open in the entry direction.
- the second guide device which guides the second weft thread, has a clamping plate, by means of which this second guide device can be kept closed.
- the weft threads are clamped in a gripper clamp, which is also provided on the bringer gripper head, namely at its front end in the insertion direction.
- the gripper clamp is made of one by means of an actuating device
- Clamping position in an open, non-clamping position and from the open, non-clamping position can be brought back into a clamping position.
- the clamping plate is by means of Actuating device can also be brought into an open position that does not close the second guide device or from the open, non-closing position into a closed position.
- the hook clamp in the sense of a double function is either decoupled from the movement of the clamping plate for transferring the weft threads from the hook clamp by means of the actuating device or, according to a second function, together with the clamping plate to release the second weft thread also from the second
- the times at which the respective weft thread is released can be set. This means that the looper clamp can be opened or closed without opening the second guide device for the second weft thread. Since the first weft thread is guided in the first, open guiding device, when the weft threads are transferred to a Holer rapier head after opening the rapier clamp, both weft threads can be gripped by the Holer rapier and clamped there, while maintaining them of the distance between the two weft threads without the second weft thread being released from the second guide device, which is still closed at the time. If after the weft threads have been transferred to the Holer rapier head, the latter moves back in the discharge direction and at the same time the rapier rapier head moves back, the second weft thread remains in the second
- the fact that the second weft thread is only released by opening the second guide device at this point in time after leaving the shed means that the distance between the weft threads is, so to speak, frozen up to this point in time. Because the second guide device can be moved independently of the gripper clamp and can be opened at selected times, it is possible to implement a pic-pic system, ie the weft threads can be changed from one entry to another entry without the Machine must be stopped.
- weft thread can be introduced into the second guide device at this point in time in the open position of the second guide device, so that after it has been closed, the latter second guide device, both weft threads can then be reinserted into the open shed for a new weft insertion.
- the bringer rapier head according to the invention thus has the advantage that over the entire weaving width, ie. H. the entire width of the shed transversely to the extent of the warp threads which form the shed, two weft threads simultaneously inserted over the entire width of the shed are kept at a distance from one another which is defined or formed by the distance of the second guide device on the rapier gripper head. Since the second guide means in its movement to open and close it
- the actuating device of the bringer gripper head is designed as a divided clamping lever, the first part of which actuates the gripper clamp in order to open or close it, and the second part of which actuates the gripper clamp and the clamping plate for simultaneously opening and closing the second guide device.
- the second guide device and the clamping plate on the one hand and the gripper clamp on the other hand can thus be actuated independently of one another, i. H. their operation is decoupled from one another.
- the actuating device and, in connection therewith, the split clamping lever on the bringer rapier head are designed such that the time at which the weft threads are released from the rapier clamp is the time at which the transfer position to the Holer rapier head is reached and that the time of Release of the second
- the guide device on the other hand, by means of the divided clamping lever, it is possible to determine or control the times of the respective opening or closing.
- the gripper clamp In its clamping position, the gripper clamp is preferably designed with a clamping force such that the weft threads are clamped in their clamping area in such a way that during of their entry in the shed, that is to say during the forward movement of the bringing rapier head into the shed, the weft threads in the clamping area do not slip through it, but are drawn into the shed without slippage, so to speak. Because the weft threads do not slip in the clamping area, they are not damaged either, except perhaps in the immediate clamping area. However, the immediate clamping area of the weft thread is usually outside the fabric edge and is therefore cut off. If it is an insert edge, this damage to the weft thread, which can be clearly visible from the outside, is limited to the fabric edge, which will not be processed later in the assembly anyway.
- the clamping plate in its position closing the second guide device with respect to the actual second guide device, is designed such that the second weft thread moves out of the shed when the bringer rapier head moves, ie. H. in its backward movement after transfer of the weft threads to the Holer gripper, when the second weft thread is guided by the second guide device in it
- a bringer gripper head and a holer gripper head are provided, which at
- the bringer rapier head has a rapier clamp, which is provided for clamping at least two weft threads, which in the clamped position in the
- Weft thread is provided so that the guide in a closable with the clamping plate second guide device is formed.
- the gripper clamps are spaced apart from one another so that the weft threads have this spacing from one another after the entry into the shed.
- the two weft threads held at a distance by means of the bringer rapier head are transferred to the Holer rapier head, which has two spaced-apart depressions into which the two weft threads are inserted, while maintaining this distance.
- the bringer rapier head moves backwards out of the shed in the direction of its entry side, the holer rapier head likewise moving backwards from the
- the bringer gripper head preferably has a clamping lever, specifically a split clamping lever, which has a first part and a second part.
- a clamping lever specifically a split clamping lever, which has a first part and a second part.
- the gripper clamp is actuated via the actuating device in the area for transfer to the Holer gripper head, so that one of the weft threads can be brought from a clamping position into a position releasing the weft threads, the actuation of the first part of the clamping lever by the actuation of the second part of the clamping lever is decoupled. So the gripper clamp can be operated without the clamping plate of the second
- the clamping lever of the gripper clamp can be actuated at a first point in time and the clamping plate of the second guide device at a second point in time, which is different from the first point in time.
- the coupling is released and the clamping lever and the clamping plate both can be moved synchronously with one another, so that the gripper head according to the invention can also be used as a gripper head which is conventional in the prior art.
- the actuating device on the bringer rapier head for the rapier weaving machine according to the invention is preferably designed such that the clamping plate can be brought from the first position, in which the second guide device is closed, to a second position, in which the second guide device is open, by means of the second part of the clamping lever is.
- the second part of the clamping lever actuates the first part of the clamping lever in the sense of a double function together with the first part of the clamping lever.
- Weft thread selected and at the same time presented to a bringer rapier head as described above.
- the first and the second weft threads are then gripped by the bringer rapier head, entered into a shed and transferred to a Holer rapier head approximately in the middle while maintaining a distance between the two weft threads.
- the two weft threads are held at a distance from one another in the bringer rapier head.
- the two weft threads are clamped in a gripper clamp, which is actuated independently of a clamping plate of the bringer gripper head.
- the two weft threads are transferred from the bringer rapier head to the Holer rapier head approximately in the middle of the shed by opening the rapier clamp beforehand, the second guide device being kept closed, so that the second weft thread is also transferred to the Holer rapier head is, but is still guided in the second management facility.
- the second guide device is kept closed by means of the clamping plate until the bringer gripper head has left the shed by moving it back from the center of the shed via the entry side out of the shed, so that when the holer emerges on the discharge side of the shed,
- the gripper head keeps both weft threads spaced apart from one another with a parallelism that may differ slightly from one another.
- the second weft thread With the release of the second weft thread, as it were delayed, because the second weft thread in the second guide device, which is kept closed, is also led back out of the shed from the center of the shed, the second weft thread remains at a substantially constant distance from the first weft thread, so that can be prevented io
- Figure 1 is a three-dimensional view of a bringer gripper head according to the invention in a viewing direction to the side of the bringer gripper head on which the guide devices are arranged;
- Figure 2 shows the embodiment of Figure 1, but in a direction of view on the side of the bringer gripper head with the gripper clamp.
- the direction of insertion into the shed is indicated by the arrow drawn in FIG. 1 at the top left.
- a rapier clamp 1 is drawn, in which a first weft thread 7 and a second weft thread 8 are clamped.
- the two weft threads 7, 8 to be inserted are presented to it and in the
- Gripper clamp 1 clamped. So that the weft threads 7 and 8 can be introduced into the area of the hook clamp 1, an actuating device 9 is provided, by means of which the hook clamp 1 can be opened. Simultaneously or after opening the
- Gripper clamp 1 can be opened by means of the actuating device 9, a second guide device 3, in which the second weft thread 8 is guided, whereby the weft thread 8 can be guided out of the second guide device 3 and can be replaced by a new, different weft thread.
- the second guide device 3 in which the second weft thread 8 is guided
- the bringer rapier head 4 offers the possibility of either holding the second guide device 3 closed by moving the clamping plate 6, as a result of which the second weft thread 8 is guided, or opening it. This offers the opportunity to
- Actuating device 9 is pivoted from the position closing the second guide device 3 into a position keeping the second guide device 3 open. This is the Actuating device 9 designed as a divided clamping lever 10, the divided
- Clamping lever 10 has a first part 10a for opening only the gripper clamp 1 and a second part 10b for opening the gripper clamp 1 and the clamping plate 6.
- the clamping plate 6 has a nose-like projection, which closes the second guide device 3 when the position is lowered, but keeps it open when the clamping plate 6 is in the raised position.
- the clamping plate 6 On its front side, has a mouth-like guide which has a first guide device 2 for the first weft thread 7. The distance between the base of the mouth-like opening in the form of the first guide device 2 and the second guide device 3 represents the distance 5 between the first weft thread 7 and the second weft thread 8.
- first part 10a of the split clamping lever 10 If only the first part 10a of the split clamping lever 10 is actuated, then only the gripper clamp 1 opens.
- the first part 10a of the split clamping lever 10 and the second part 10b of the split clamping lever can be decoupled from one another or moved together.
- the gripper clamp 1 opens for picking up or releasing weft threads.
- the second part 10b of the divided clamping lever In the pressed state of the first part 10a of the divided clamping lever 10, the second part 10b of the divided
- Clamping lever 10 can then also be actuated or pressed, which results in lifting the clamping plate 6 and thus releasing the second weft thread 8 from the second
- Guide device 3 leads.
- the release of the second guide device 3 is to be understood to mean that the second guide device 3, which was previously closed by means of the clamping plate 6, is brought into an open position. If the second
- first part 10a and the second part 10b of the divided clamping lever 10 can also be operated together by depressing the second part 10b of the divided clamping lever 10 of the actuating device 9.
- the second part 10b of the divided clamping lever 10 engages over the rear end of the first part 10a, so that when the second part 10b of the divided clamping lever 10 is depressed, both parts 10a, 10b are actuated simultaneously.
- the gripper clamp 1 and the second guide device 3 thus open, since the clamping plate 6 is also lifted synchronously.
- Guide device 3 can be operated independently of one another or synchronously with one another.
- the first weft thread 7 and the second weft thread 8 are spaced apart by a first guide device 2, which is arranged in the entry direction at the front end of the clamping plate 6, that is to say in front of the second guide device 3. The distance between the first guide device 2, which is arranged in the entry direction at the front end of the clamping plate 6, that is to say in front of the second guide device 3.
- Weft 7 and the second weft 8 is identified by 5.
- this distance is maintained when the two weft threads 7, 8 have been transferred from the bringer rapier head 4 to the Holer rapier head, so that after the weft threads, ie. H. after the Bringer rapier head 4 has been moved back out of the shed and the Holer rapier head has also been moved out to the discharge side of the shed again.
- the two weft threads 7, 8 can be inserted into the shed at a defined distance from one another during the double weft insertion, as a result of which the weft threads are pushed over and twisted during
- the Bringer gripper head 4 shown in Figure 1 which is designed in the present embodiment as a so-called left gripper head, is shown in three-dimensional view from the side on which the gripper clamp 1 is located.
- the gripper clamp 1 In the position shown, the gripper clamp 1 is closed and clamps both weft threads 7, 8.
- the clamping force of the gripper clamp 1 is designed such that when both weft threads are inserted into the shed, they cannot slide or slide through the clamping region of the gripper clamp 1.
- the clamping plate 6 with the first guide device 2 for guiding the first weft thread 7 is shown.
- the actuating device 9 is designed as a divided clamping lever 10 which has a first part 10a and a second part 10b. It can be seen in FIG. 2 that the front edge of the second part 10b overlaps the first part 10a at its rear area, so that when the second part 10b is actuated the entire part
- Actuator with both parts 10a and 10b is pressed simultaneously. However, if only the first part 10a of the split clamping lever 10 is pressed, only that opens
- the second weft 8 cannot occur over the first weft 7.
- the direction of entry is again shown by the arrow shown in FIG. 2 at the front end of the bringer gripper head 4.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018222722.5A DE102018222722B3 (de) | 2018-12-21 | 2018-12-21 | Bringer-greiferkopf, webmaschine mit einem solchen bringer-greiferkopf und verfahren zum doppelschusseintrag |
PCT/EP2019/083971 WO2020126546A1 (de) | 2018-12-21 | 2019-12-06 | Bringer-greiferkopf, webmaschine mit einem solchen bringer-greiferkopf und verfahren zum doppelschusseintrag |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3899121A1 true EP3899121A1 (de) | 2021-10-27 |
EP3899121B1 EP3899121B1 (de) | 2023-01-25 |
Family
ID=68724944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19816672.0A Active EP3899121B1 (de) | 2018-12-21 | 2019-12-06 | Bringer-greiferkopf, webmaschine mit einem solchen bringer-greiferkopf und verfahren zum doppelschusseintrag |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3899121B1 (de) |
JP (1) | JP7407823B2 (de) |
CN (1) | CN113195811B (de) |
DE (1) | DE102018222722B3 (de) |
WO (1) | WO2020126546A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020214451B3 (de) | 2020-11-17 | 2021-11-11 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Schussfadenzuführvorrichtung mit klemmenscheibe |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0633336A1 (de) * | 1993-07-06 | 1995-01-11 | Sulzer RàTi Ag | Verfahren zum gleichzeitigen Eintragen von zwei Schussfäden und Webmaschine mit Anordnung zur Durchführung des Verfahrens |
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 |
IT1304698B1 (it) * | 1998-12-23 | 2001-03-28 | Somet Soc Mec Tessile | Coppia di pinze portanti e traente per telai di tessitura |
CN100402723C (zh) * | 2002-04-09 | 2008-07-16 | 伊索拉构造股份有限公司 | 用于一种剑杆织机中送纱器的纱线夹持器 |
WO2008052369A1 (de) * | 2006-10-30 | 2008-05-08 | Textilma Ag | Schussfadeneintragvorrichtung für eine greiferwebmaschine |
BE1018116A3 (nl) | 2008-05-07 | 2010-05-04 | Picanol Nv | Nemergrijper, gevergrijper en inrichting voor een grijperweefmachine. |
CN102459733B (zh) | 2009-06-10 | 2013-11-27 | 林道尔·多尼尔有限责任公司 | 用于在剑杆织机上引入纬纱的装置和方法 |
BE1021697B1 (nl) | 2013-06-25 | 2016-01-08 | Picanol | Werkwijze en inrichting voor het tegelijkertijd inbrengen van twee inslagdraden |
-
2018
- 2018-12-21 DE DE102018222722.5A patent/DE102018222722B3/de active Active
-
2019
- 2019-12-06 JP JP2021535625A patent/JP7407823B2/ja active Active
- 2019-12-06 CN CN201980084950.8A patent/CN113195811B/zh active Active
- 2019-12-06 WO PCT/EP2019/083971 patent/WO2020126546A1/de unknown
- 2019-12-06 EP EP19816672.0A patent/EP3899121B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
CN113195811B (zh) | 2023-02-17 |
JP7407823B2 (ja) | 2024-01-04 |
WO2020126546A1 (de) | 2020-06-25 |
DE102018222722B3 (de) | 2019-12-19 |
CN113195811A (zh) | 2021-07-30 |
EP3899121B1 (de) | 2023-01-25 |
JP2022514093A (ja) | 2022-02-09 |
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