EP0972099A1 - Greiferwebmaschine - Google Patents
GreiferwebmaschineInfo
- Publication number
- EP0972099A1 EP0972099A1 EP98916907A EP98916907A EP0972099A1 EP 0972099 A1 EP0972099 A1 EP 0972099A1 EP 98916907 A EP98916907 A EP 98916907A EP 98916907 A EP98916907 A EP 98916907A EP 0972099 A1 EP0972099 A1 EP 0972099A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide part
- gripper
- rapier
- guide
- rib
- 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
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
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/277—Guide 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
- D03D47/12—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
-
- 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
-
- 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
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/271—Rapiers
- D03D47/272—Rapier bands
Definitions
- the invention relates to a rapier weaving machine with at least one rapier, which is attached to a rapier belt by means of a guide part, with guide elements which are arranged in a row one behind the other and can be moved into a formed shed and have guides for the rapier belt and for the guide part.
- a rapier weaving machine of the type mentioned at the outset is known, for example, from EP 0 576 854 AI.
- the guide elements have guides which are assigned to the upper side and the lower side of the gripper belt and to the upper and lower sides of the guide part which are aligned with these.
- At least one guide rib is provided on the guide part and is assigned a transverse guide for the guide elements.
- a transverse guide thus only takes place in the area of the guide part, while the gripper belt itself has a uniform, essentially rectangular cross section.
- the gripper belt is thus designed such that it is relatively flexible in the direction of its flat sides, while it is relatively stiff in the transverse direction. This training is possible because the lateral guidance is carried out exclusively by the guiding part.
- the aim is to increase the working speed, ie in particular the weft frequency. This increase in the weft frequency is possible if the shed into which the weft thread has just been inserted is already closed again before the gripper (s) have already been completely pulled out of the shed.
- the object of the invention is to design a rapier weaving machine in such a way that closing a shed before the rapier has been completely pulled out does not lead to any malfunctions.
- the guide part is provided on the side facing away from the gripper with at least one sliding rib which extends in the longitudinal direction of the guide part and protects the warp threads from contact with the guide part.
- the at least one sliding rib prevents warp threads from coming into contact with the guide part when the shed is closed before the gripper has been completely pulled out of the shed, so that it is ensured that on the one hand the warp threads are the guide part usually made of plastic and in particular its guide surfaces not damage, and that, on the other hand, the guide surfaces of the guide part which are subject to wear do not damage the warp threads or confuse their position.
- At least one slide rib is attached to the gripper belt in the direction of the gripper belt on the guide part and / or the gripper, which protects warp threads from contact with the guide part.
- the gripper is usually made of metal, which has a relatively low coefficient of friction with the warp threads. It towers over the that the warp threads lying against it do not come into contact with the guide part. The additional attachment of a sliding rib maintains this effect over the entire length of the guide part, so that the risk of damage to the guide part and / or the warp threads is also substantially reduced in this area.
- FIG. 1 shows a cross section through a rapier weaving machine in a schematic representation
- FIG. 3 shows a section similar to FIG. 2 on an even larger scale, the shed being partially closed again while the gripper has not yet been completely withdrawn from the shed,
- FIG. 4 shows a side view of the schematically illustrated gripper with a guide part and sliding ribs
- FIG. 5 is a bottom view of the embodiment of FIG. 4,
- FIG. 6 shows a section similar to FIG. 3 through an embodiment with a modified guide part
- FIG. 7 is a bottom view (on a smaller scale) of the guide part of FIG. 5 and the subsequent gripper belt and the gripper, 8 shows a section similar to FIG. 3 through a further embodiment
- Fig. 9 is a bottom view of the guide member of FIG. 8 with the subsequent gripper belt and the gripper and protruding
- 10 and 11 are a side view and a view from below of a guide part, the sliding ribs of which extend into the initial region of the gripper belt.
- the rapier weaving machine shown in FIG. 1 has a donor rapier 1 and a slave rapier 2, each of which is inserted into a shed by means of a rapier belt 3, 4.
- the donor gripper 1 takes a weft thread on a thread presentation device, not shown, which it introduces into a shed and passes in the area of the center of the weaving machine to the taker gripper 2, which then takes the weft thread back to the opposite side of the shed when it is pulled back.
- the gripper belts 3, 4 are driven by mutually corresponding drives ⁇ arranged in a mirror-symmetrical manner in the region of side parts 5.
- the gripper belts 3, 4 are driven by means of a drive wheel 7, wherein they are kept in contact with the drive wheel 7 by means of guide blocks 8.
- the drive wheel 7 is usually a gear wheel which engages with its teeth in perforations in the gripper belts 3, 4.
- the drives 6 for the gripper belts 3, 4 are synchronized with a drive 9, which drives a sley 10 mounted in the side parts 5.
- the sley 10, which is shown more clearly in FIG. 2, has a sley profile 11, which is fixed in a rotationally fixed manner on a weaving axis 13 by means of screws 12 A weaving comb 15 is fastened to the weaving profile 11 by means of fastening means 14.
- An intermediate profile 16 is also fastened to the weaving profile 11 by means of screws 17, to which guide elements 19 arranged in a row and fastened by means of screws 18 are fastened, which, as will be explained later, guides 20 for the gripper belts 3, 4 and 1 Form guide part 21, on which the gripper 1 or 2 is attached and which in turn is connected to the gripper belt 3 or 4. These will be explained later only for the encoder gripper 1, since the training for the slave gripper 2 is identical.
- the rapier weaving machine also has not yet shown means for forming shed 22 from upper warp threads 23 and lower warp threads 24.
- the means for forming the shed 22 are synchronized with the shed drive 9 and thus also with the drives 6 for the rapier belts 3, 4.
- a weft thread is introduced into the opened shed 22 by means of the gripper 1 and the gripper 2, which is then struck by the comb 15 on the cloth 25 by pivoting the sley 10.
- the upper warp threads 23 lay against the master gripper 1 and the slave gripper 2.
- Receiving gripper 2 and drawing gripper 1 which are, for example, U.S. Patent 4,860,800 or U.S. Patent formed 4708174 ', are made of metal, in particular steel, and have a smooth, polished surface which has a relatively low friction to the warp threads 23 owns.
- the risk that the upper warp threads 23 will be damaged by the master gripper 1 and the slave gripper 2, or that their position will be disturbed, is relatively low.
- the master gripper 1 or the Slave gripper 2 opposite underside of the guide part 21 a slide rib 26 attached.
- This sliding rib 26 is glued into a recess in the guide part 21 or molded into the guide part 21 during manufacture.
- the sliding rib 26 projects so far down towards the lower warp threads 24 that they do not come into contact with the guide part 21 when the shed 22 is closed.
- the guide part 21 is provided on the side facing away from the weaving comb 15 with a downwardly projecting guide rib 27 which extends approximately over the entire length of the guide part.
- the guide rib 27 is assigned a transverse guide 28 of the guide elements 19, which consists of a U-shaped incision, on the opposite side surfaces of which the side surfaces of the guide rib 27 are guided in the transverse direction.
- the guide member 19 also has essentially parallel guides 29, 30, the top and bottom of the gripper belts 3, 4 and the top and bottom of the guide parts 21, which are aligned therewith.
- the bottom of the U-shaped recess 28, which forms the transverse guide for the guide rib 27, is cut out to such an extent that the sliding rib 26 maintains a clear distance from this, as shown in FIGS. 2 and 3.
- the master gripper 1 and the slave gripper 2 project forward over the guide part 21.
- the gripper extends up to approximately the middle of the guide part 21 and ends with a slope to the top of the guide part 21.
- a sliding rib 31 projecting from the top of the guide part is arranged, which overlaps the master gripper 1 somewhat and which extends somewhat beyond the end of the guide part 21 and then runs out at an incline to the top of the gripper belt 3, which runs along with the top of the guide part 21 is aligned.
- the guide rib 27 extends on the underside over almost the entire length of the guide part 21. It runs at both ends with a slope into the underside of the guide part 21.
- the sliding rib 26 inserted into the guide rib 27 extends over the entire length of the guide rib 27 and is chamfered at both ends so that it is flush with the slopes of the guide rib 27.
- the gripper belt 3 and the guide member 21 have the same width.
- the end of the guide part 21 facing away from the gripper 1, like the gripper band, is provided with a recess, so that the gripper band 3 and the guide part 21 overlap approximately half the length of the guide part in the region of these recesses.
- the connection between the guide part 21 and the Gripper belt 3 takes place in the area of these overlapping recesses.
- the guide part 21 corresponding in shape to the exemplary embodiment according to FIG. 3 is provided with a further sliding rib 32 in the region of its side edge facing the weaving comb 15.
- This sliding rib 32 which extends only approximately over the front half of the guide part 21 and merges with bevels into the underside of the guide part, allows on the one hand to slightly reduce the height of the sliding rib 26 without the warp threads 24 when closing the shed come into contact with the guide part 21. It is also possible to close the shed 22 a little earlier before the donor gripper 1 is guided out of the shed 22 without the warp threads 24 touching the edge of the guide part 21 facing the weaving comb 15.
- a guide part 33 is provided, which is also provided with a downwardly projecting guide rib 34 on the side facing the weaving comb 15.
- the transverse guidance of this guide part 33 thus takes place between two guides 35, 36 of the guide elements 19 which delimit the guide 29 and run perpendicular to the guide 29.
- the U-shaped recess 28 of the guide elements 19 is then somewhat wider than the guide rib 27.
- both guide ribs 27, 34 are provided with slide ribs 26, 37, which protrude equally far down.
- the sliding rib 37 of the guide rib 34 only extends approximately over the front half of the guide part 33.
- the guide part has two guide ribs 27, 34 on its underside, similar to the embodiment according to FIGS. 8 and 9.
- This Guide ribs 27 are provided with slide ribs 38, 39 which protrude beyond the guide part 33 and extend into the initial region of the gripper belt 3. They are provided with bevels which are inserted into recesses in the gripper belt 3. This ensures that warp threads do not get stuck at the transition between the guide part 33 and the looper belt, but are safely guided over this connection area.
- the guide part 21 or 33 is made of a plastic which has the lowest possible sliding resistance to the guide elements 19 made of metal.
- the sliding ribs 26, 32, 37, 38, 39 and 31 are made of a wear-resistant material that has the lowest possible frictional resistance to the warp threads 24. They are preferably made of metal, in particular steel, and have a polished surface. The edges coming into contact with the warp threads 24 are rounded.
- the sliding ribs 26, 32, 37, 38, 39 and 31 may have undergone a surface treatment in order to increase their wear resistance and / or to reduce the frictional resistance to the warp threads 24. For example, they can be hardened or provided with a coating.
- the sliding ribs 26, 32, 37, 38, 39 and 31 are made from a non-metallic material, in particular from ceramic material.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19713628 | 1997-04-02 | ||
DE19713628A DE19713628A1 (de) | 1997-04-02 | 1997-04-02 | Greiferwebmaschine |
PCT/EP1998/001360 WO1998044180A1 (de) | 1997-04-02 | 1998-03-09 | Greiferwebmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0972099A1 true EP0972099A1 (de) | 2000-01-19 |
EP0972099B1 EP0972099B1 (de) | 2003-08-06 |
Family
ID=7825253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98916907A Expired - Lifetime EP0972099B1 (de) | 1997-04-02 | 1998-03-09 | Greiferwebmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US6230759B1 (de) |
EP (1) | EP0972099B1 (de) |
DE (2) | DE19713628A1 (de) |
WO (1) | WO1998044180A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59914379D1 (de) * | 1998-08-25 | 2007-07-26 | Picanol Nv | Greiferwebmaschine mit wenigstens einem greiferband und führungsmitteln |
DE19838476A1 (de) * | 1998-08-25 | 2000-03-09 | Picanol Nv | Greiferbandwebmaschine mit wenigstens einem Greiferband und Führungsmitteln |
DE19838477A1 (de) * | 1998-08-25 | 2000-03-02 | Picanol Nv | Greiferbandwebmaschine |
BE1014950A3 (nl) * | 2001-08-29 | 2004-07-06 | Wiele Michel Van De Nv | Inrichting voor het aandrijven en geleiden van een grijper van een weefmachine. |
WO2005021851A1 (en) * | 2003-09-03 | 2005-03-10 | Nv Bekaert Sa | Coated rapier |
DE102004049255B4 (de) * | 2004-10-05 | 2013-07-18 | Picanol | Führungselemente für ein Greifertransportelement einer Webmaschine |
DE102004049256B4 (de) * | 2004-10-05 | 2014-01-02 | Picanol | Führungselemente für ein Greifertransportelement einer Webmaschine |
DE102004049254B4 (de) * | 2004-10-05 | 2013-07-25 | Picanol | Greifertransportelement für eine Webmaschine |
BE1016298A4 (nl) * | 2004-11-04 | 2006-07-04 | Wiele Michel Van De Nv | Aandrijftandwiel voor het aandrijven van een grijperstang in een weefmachine. |
US20090293983A1 (en) * | 2008-05-28 | 2009-12-03 | Itema (Switzerland) Ltd. | Apparatus And Method For The Insertion Of A Weft Thread In A Rapier Weaving Machine |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2125894A (en) * | 1935-08-10 | 1938-08-09 | Dewas Raymond | Needle weaving loom |
US2151085A (en) * | 1936-11-21 | 1939-03-21 | Dewas Raymond | Needle weaving loom |
BE658330A (de) * | 1964-01-17 | 1900-01-01 | ||
ES400984A1 (es) * | 1972-03-04 | 1975-02-01 | Desveus Duran | Perfeccionamientos en la construccion de maquinas de tejer sin lanzadera. |
BE902141A (nl) * | 1985-04-09 | 1985-10-09 | Picanol Nv | Verbeterde grijpers voor weefmachines. |
EP0248486B1 (de) * | 1986-06-03 | 1990-01-17 | Picanol N.V. | Bringergreifer für Greiferwebmaschinen |
IT1198246B (it) * | 1986-12-23 | 1988-12-21 | Vamatex Spa | Mezzi per guidare il moto di una coppia di pinze portatrama all'interno del passo di telai di tessitura |
FR2648161B1 (fr) * | 1989-06-09 | 1991-10-04 | Saurer Diederichs Sa | Dispositif de support et de guidage pour organes d'insertion mecanique de la trame, dans une machine a tisser sans navette |
IT1251304B (it) * | 1991-09-11 | 1995-05-08 | Somet Soc Mec Tessile | Coppia di pinze portante-traente per telai di tessitura senza navetta con trasporto della trama rispettivamente in un piano obliquo e verticale |
DE59309766D1 (de) * | 1992-07-03 | 1999-10-14 | Picanol Nv | Greiferwebmaschine |
IT1260699B (it) * | 1992-10-23 | 1996-04-22 | Transfer per macchine per tessere | |
IT1290837B1 (it) * | 1996-02-27 | 1998-12-14 | Nuovo Pignone Spa | Testa di nastro perfezionata per telaio tessile a pinze e procedimento per la sua realizzazione |
-
1997
- 1997-04-02 DE DE19713628A patent/DE19713628A1/de not_active Withdrawn
-
1998
- 1998-03-09 WO PCT/EP1998/001360 patent/WO1998044180A1/de active IP Right Grant
- 1998-03-09 EP EP98916907A patent/EP0972099B1/de not_active Expired - Lifetime
- 1998-03-09 DE DE59809213T patent/DE59809213D1/de not_active Expired - Lifetime
- 1998-03-09 US US09/381,967 patent/US6230759B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9844180A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0972099B1 (de) | 2003-08-06 |
WO1998044180A1 (de) | 1998-10-08 |
US6230759B1 (en) | 2001-05-15 |
DE59809213D1 (de) | 2003-09-11 |
DE19713628A1 (de) | 1998-10-08 |
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