EP0644286B1 - Anordnung zum Vorlegen von Schussfäden - Google Patents
Anordnung zum Vorlegen von Schussfäden Download PDFInfo
- Publication number
- EP0644286B1 EP0644286B1 EP93810659A EP93810659A EP0644286B1 EP 0644286 B1 EP0644286 B1 EP 0644286B1 EP 93810659 A EP93810659 A EP 93810659A EP 93810659 A EP93810659 A EP 93810659A EP 0644286 B1 EP0644286 B1 EP 0644286B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- weft
- reference plane
- arrangement according
- order
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009941 weaving Methods 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000004795 WEFT sequence Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 1
- 239000004791 lurex Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- -1 twisted crepe yarns Substances 0.000 description 1
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
- D03D47/12—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
- D03D47/125—Weft holding devices
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
- D03D47/38—Weft pattern mechanisms
Definitions
- the invention relates to an arrangement for presenting weft threads for a rapier weaving machine according to the preamble of claim 1, and a rapier weaving machine with such an arrangement.
- EP-A 421 349 describes a device which has two clamping points and, in the manner of a mixed changer, after the transfer of the weft thread to the gripper, provides the relevant clamping point for receiving the inserted weft thread and then clamps the weft thread, the clamping points above or below are arranged below the tissue plane.
- a first guide element with a slot is provided, through which the weft threads are guided from the weft thread feeders to the clamping points. Because the weft threads are guided in the same plane but are clamped at different levels on both sides of this plane, the weft threads come into contact or cross in the slot or in the path of the weft threads the clamping points and the weft feeders. This is a disadvantage.
- the slot is widened at the end in order to prevent the weft thread from being carried along.
- the weft thread is taken over by the gripper, it is pulled over the edge formed by the extension, which leads to weft thread breaks.
- the paths of the weft threads can cross.
- weft threads For the presentation of a plurality of weft threads, e.g. four such devices are provided, which are arranged in an upper or lower position and each can be moved up and down individually in order to shift the respective device into a forward position.
- the shifting of the device extends the period between two weft thread patterns, which undesirably limits the working speed and the number of weft threads that can be placed.
- each device has a thread guide, the weft threads in each device are displaced with respect to the fabric plane, so that each has an excess length, which leads to crossings of the weft threads.
- ribbon-shaped metal thread composite material Lix
- the invention seeks to remedy this.
- the invention as characterized in the claims solves the problem of creating an arrangement for the insertion of weft threads, so that avoiding the disadvantages mentioned a selective presentation of the weft threads at high Working speed of the loom is guaranteed, and in which the space required for the presentation of the weft thread to be entered is limited to a minimum.
- the distance between the clamping points is at least 1 mm and an actuating device in the form of a stepper motor is used.
- an actuating device in the form of a stepper motor is used.
- US-A-3,921,678 describes a device for selecting a weft thread.
- This device contains a plate with a slit-shaped opening, with a recess and with a passage opening connecting the opening and the recess, a movable lock for closing the passage opening, a slide with recesses open on one side for receiving the weft threads and for holding the weft threads within the recess and a plunger for ejecting a selected weft thread into the slit-like opening, when the movable barrier of the passage opening is released.
- weft threads are guided from a weft thread spool to the recesses which are open on one side and are only inserted into them.
- the holder of the weft thread is therefore essentially dependent on the weft thread tension. Due to tension fluctuations, weft loosening occurs, which leads to misalignment of the weft threads and formation of squeegees.
- the weft thread is ejected into the recess by the slider and left there, while the barrier closes the passage opening.
- the weft thread lies freely in the recess before being taken over by a gripper (FIG. 2).
- the weft thread is thus kept in the correct position. Since this holding does not take place in the device, other means must be provided, which are not described, however. It is a so-called color monitor.
- the end of the weft thread is held at the clamping point.
- the weft is aligned to the fabric level by the coordinated movement.
- the device according to the invention thus also has a positioning function.
- the arrangement shown in Fig. 1 consists essentially of a known weft sequence control (not shown) with six weft feeders 1, a controlled thread clamp 2 with six clamping points 3a to 3f and a guide member 4 with a slot 5.
- the arrangement is in a rapier weaving machine mounted in such a way that the clamping points lie one above the other with respect to the tissue plane, which is referred to below as the reference plane 6, and the slot 5 is arranged in the reference plane 6.
- the guide member 4 has a recess 7 into which the slot 5 opens.
- the weft feeders 1 are staggered so that the guide openings A to F have a different height with respect to the reference plane 6. With the arrangement, six weft threads 8a to 8f are presented. Each weft thread feeder 1 is assigned to a clamping point 3a to 3f such that each weft thread is guided from the clamping point holding the weft thread through the recess 7 to the guide openings A to F essentially parallel and without crossing. Furthermore, there is an adjusting device 9 around the clamping points 3a to 3f with respect to the reference plane 6 and a device 10 for canceling a selected clamping point is provided.
- the actuating device 9 is a stepper motor which is connected to the weaving machine with a control device (not shown) and is controlled in accordance with a weaving program.
- the device 10 is, for example, an electromagnet which is fed from the firing sequence control. It is pointed out that instead of the magnet, a lever arrangement can be provided which is coupled to the weft sequence control device.
- the thread clamp 2 contains a holder 11, seven clamping bodies 12, an actuator 13, two compression springs 14, two snap rings 15, a pin 16 and an opening element 17.
- the holder 11 is U-shaped and has a through hole 22 with a square cross section in its legs 21 and an elongated hole 24 in its base section 23.
- the clamping bodies 12 are essentially cuboid and have a through hole 25 with a square cross section.
- the clamping bodies are wedge-shaped at the ends in order to facilitate the insertion of the weft thread or the opening member 17.
- the actuator 13 is rod-shaped and has a section 26 with a square cross section and a second section 27 with a round cross section.
- the actuating element 13 is arranged in the legs 21 in the direction of the double arrow A so as to be displaceable.
- the seven clamping bodies 12, which form the six clamping points 3a to 3f, are arranged on the first section 26.
- the clamping bodies are designed so that the clamping points are at a distance of, for example, 3 mm.
- the middle clamp is firmly connected to the actuator 13 by means of the pin 16 and three clamping bodies are arranged displaceably on each side of the fixed clamping body.
- Compression springs 14 are arranged on both sides of the clamping bodies 12, which rest on the one hand on the snap rings 15 and on the other hand on the outer clamping bodies 12 and press the latter against one another.
- the actuator 13 is coupled to the actuator 9.
- the opening element 17 is arranged in the slot 24 in the direction of the double arrow B and is coupled to the device 10.
- the thread clamp 2 and the guide member 4 are connected to one another and form a functional unit.
- This functional unit is mounted in the rapier weaving machine by means not shown.
- the thread clamp 2 is arranged at a predetermined distance with respect to the fabric edge 31 such that the clamping points 3 are each aligned with the compartment tip 32.
- a symbolically illustrated cutting device 33 is arranged between the thread clamp 2 and the fabric edge 31 (FIG. 5). The mode of operation of the arrangement is described below, the arrangement being brought from the position shown in FIG. 1 to the position shown in FIG. 4, in which the weft thread 8a is presented to the hook 35.
- the weft thread template is composed of two processes, namely the pivoting of the weft thread feeder 1 in the direction of the reference plane 6 and the displacement of the clamping point 3a into the reference plane 6.
- the weft threads 8a to 8f are guided without crossings between the clamping points and the guide openings. This state is maintained when the weft thread feeder is pivoted.
- the displacement of the nip 3a in the reference plane 6 ensures that the weft thread 8a is arranged in the reference plane 6 and is already inserted into the slot 5 due to the tensile stress acting on the thread. (Fig. 5).
- the weft thread 8a Due to this spatial separation of the weft thread 8a from the other weft threads, there is no contact between them when the weft thread is taken over by the gripper 35. After the weft thread 8a has been taken over by the gripper 35, the weft thread end is peeled out of the clamping point 3a and drawn into the shed. During the pulling in of the weft thread 8a, the clamping point 3a is released by the opening member 17 by inserting it between the clamping bodies 12, which form the clamping point 3a. A gap between the clamping bodies 12 is simultaneously formed by this opening member. The weft thread 8a drawn in is inserted into this gap again when struck by the reed (not shown).
- the weft thread feeder 1 is again in the position shown with dashed lines.
- the weft 8a is guided through the inlet gap into the slot 5, the weft 8a being guided on the top of the slot 5 due to the position of the weft feeder 1.
- the weft thread is introduced into the gap between the clamping bodies 12 in a spatially separated manner from the other weft threads.
- the clamping point is re-established due to the spring force and the weft thread is held in the clamping point.
- the inserted weft thread is cut by means of the cutting device 33. This provides the weft for a new entry.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59306205T DE59306205D1 (de) | 1993-09-20 | 1993-09-20 | Anordnung zum Vorlegen von Schussfäden |
EP93810659A EP0644286B1 (de) | 1993-09-20 | 1993-09-20 | Anordnung zum Vorlegen von Schussfäden |
US08/289,824 US5492153A (en) | 1993-09-20 | 1994-08-12 | Clamp type arrangement for presenting weft threads to a gripper |
JP21892694A JP3413809B2 (ja) | 1993-09-20 | 1994-09-13 | 緯糸導入装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93810659A EP0644286B1 (de) | 1993-09-20 | 1993-09-20 | Anordnung zum Vorlegen von Schussfäden |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0644286A1 EP0644286A1 (de) | 1995-03-22 |
EP0644286B1 true EP0644286B1 (de) | 1997-04-16 |
Family
ID=8215031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93810659A Expired - Lifetime EP0644286B1 (de) | 1993-09-20 | 1993-09-20 | Anordnung zum Vorlegen von Schussfäden |
Country Status (4)
Country | Link |
---|---|
US (1) | US5492153A (ja) |
EP (1) | EP0644286B1 (ja) |
JP (1) | JP3413809B2 (ja) |
DE (1) | DE59306205D1 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0898001A3 (en) * | 1997-08-04 | 1999-12-08 | GIVIDI-Italia S.p.A. | Method of cutting the selvedge |
DE19739853C2 (de) * | 1997-09-11 | 2001-04-12 | Dornier Gmbh Lindauer | Steuerbare Schußfadenzubringer- und -klemmvorrichtung und Vorrichtungsanordnung zum Minimieren des Schußfadenabfalles bei der Gewebeherstellung auf Webmaschinen, insbesondere auf Greiferwebmaschinen |
DE59804179D1 (de) * | 1997-09-11 | 2002-06-27 | Dornier Gmbh Lindauer | Steuerbare Schussfadenzubringer- und -klemmvorrichtung und Vorrichtungsanordnung zum Minimieren des Schussfadenabfalles bei der Gewebeherstellung auf Webmaschinen, insbesondere auf Greiferwebmaschinen |
US6253795B1 (en) * | 1998-03-14 | 2001-07-03 | Stephan Kuster | Tensioning apparatus and method for an interlaced thread |
ATE315119T1 (de) * | 1998-10-21 | 2006-02-15 | Picanol Nv | Fadenklemme für einen greifer einer greiferwebmaschine |
DE19852794B4 (de) * | 1998-11-16 | 2004-03-25 | Lindauer Dornier Gmbh | Steuerbare Schussfadenzubringer- und -klemmvorrichtung für Webmaschinen |
EP1016744B1 (de) * | 1998-12-16 | 2003-07-09 | Sultex AG | Verfahren und System zum Einstellen der Fadenklemme eines Bringergreifers und webmaschine mit einem System |
EP1020550B1 (de) * | 1999-01-12 | 2004-07-21 | Sultex AG | Vorrichtung zum Abtrennen eines in ein Webfach einzutragenden Schussfadens und Webmaschine mit einer derartigen Vorrichtung |
DE59910006D1 (de) * | 1999-01-12 | 2004-08-26 | Sultex Ag Rueti | Vorrichtung zum Abtrennen eines in ein Webfach einzutragenden Schussfadens und Webmaschine mit einer derartigen Vorrichtung |
BE1012676A3 (nl) * | 1999-05-12 | 2001-02-06 | Wiele Michel Van De Nv | Inrichting voor inslagannulatie op een weefmachine. |
US7543610B2 (en) * | 2006-06-16 | 2009-06-09 | Sultex Ag | Thread clamp for a rapier head |
DE502006003985D1 (de) * | 2006-01-24 | 2009-07-30 | Sultex Ag | Gesteuerte Fadenbremse |
DE102006025265A1 (de) * | 2006-05-31 | 2007-12-06 | Lindauer Dornier Gmbh | Verfahren und Vorrichtung zum Bilden einer Gewebekante an einer Greiferwebmaschine |
BE1019807A3 (nl) | 2011-07-12 | 2012-12-04 | Picanol | Inrichting en werkwijze voor het klemmen van een inslagdraad. |
DE102015217356B3 (de) | 2015-09-10 | 2016-10-20 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Webmaschine mit einer Vorrichtung sowie Verfahren zum Halten, Zubringen und Eintragen von Schussfäden in ein Webfach |
BE1024401B1 (nl) | 2016-07-04 | 2018-02-13 | Picanol N.V. Naamloze Vennootschap | Inrichting voor het klemmen van inslagdraden |
IT201700073787A1 (it) * | 2017-06-30 | 2018-12-30 | Itema Spa | Dispositivo di gestione dei fili di trama senza la formazione di falsa cimossa in un telaio tessile a pinze |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE389610C (de) * | 1922-09-14 | 1924-02-04 | Vogtlaendische Maschinenfabrik | Schussfadenwechselvorrichtung fuer Greiferwebstuehle |
JPS5522578B2 (ja) * | 1971-11-19 | 1980-06-18 | ||
US3921678A (en) * | 1971-11-24 | 1975-11-25 | Lebocey Ind Soc | Device for selecting a weft thread in a shuttleless loom supplied by external spools |
US4185667A (en) * | 1978-05-17 | 1980-01-29 | Rossville Mills, Inc. | Positioning and holding mechanisms for filling yarns in a shuttleless loom |
JPS59167151A (ja) * | 1983-03-14 | 1984-09-20 | Hitachi Ltd | デ−タ伝送方式 |
JPS609949A (ja) * | 1983-06-24 | 1985-01-19 | 株式会社石川製作所 | 無杼織機における多色緯糸選択装置 |
NL8600857A (nl) * | 1986-04-03 | 1987-11-02 | Picanol Nv | Werkwijze voor het klemmen, vasthouden en presenteren van inslagdraden bij grijperweefmachines en inrichting hiertoe aangewend. |
DE3812960A1 (de) * | 1987-10-06 | 1989-04-20 | Textilma Ag | Greiferwebmaschine |
IT1230951B (it) * | 1989-06-30 | 1991-11-08 | Nuovo Pignone Spa | Dispositivo perfezionato di selezione e presentazione dei fili di trama per telai tessili ad alta velocita' |
US5156105A (en) * | 1991-09-23 | 1992-10-20 | Wang Shui Nu | Thread tension adjusting device for a sewing machine |
DE9206600U1 (de) * | 1992-05-18 | 1992-10-22 | Schouten, Petrus Coenradus, Amsterdam | Fadenspanner |
-
1993
- 1993-09-20 DE DE59306205T patent/DE59306205D1/de not_active Expired - Lifetime
- 1993-09-20 EP EP93810659A patent/EP0644286B1/de not_active Expired - Lifetime
-
1994
- 1994-08-12 US US08/289,824 patent/US5492153A/en not_active Expired - Lifetime
- 1994-09-13 JP JP21892694A patent/JP3413809B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3413809B2 (ja) | 2003-06-09 |
JPH07150443A (ja) | 1995-06-13 |
DE59306205D1 (de) | 1997-05-22 |
US5492153A (en) | 1996-02-20 |
EP0644286A1 (de) | 1995-03-22 |
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