EP1082478A1 - Gripper and weft insertion device for a rapier loom - Google Patents
Gripper and weft insertion device for a rapier loomInfo
- Publication number
- EP1082478A1 EP1082478A1 EP99906007A EP99906007A EP1082478A1 EP 1082478 A1 EP1082478 A1 EP 1082478A1 EP 99906007 A EP99906007 A EP 99906007A EP 99906007 A EP99906007 A EP 99906007A EP 1082478 A1 EP1082478 A1 EP 1082478A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rapier
- gripper
- actuator
- thread
- thread clamp
- 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
- D03D47/12—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
- D03D47/12—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
Definitions
- the invention relates to a rapier for a rapier loom ge ass the preamble of. Claim 1 and a weft insertion device with a rapier.
- Grippers are used to guide the weft thread through the shed or a rapier and rapier gripper is used, the weft thread being transferred from the rapier to the rapier rapier within the shed.
- the grippers have thread clamps which, in the first-mentioned embodiment, are controlled outside the shed and in the second embodiment, inside the shed, positively, that is, forcibly controlled.
- Mechanical or electromechanical means are used for this, the actuating element for opening or closing the thread clamp being arranged outside or below the shed.
- Trigger magnet can be arranged outside the shed.
- the air gap between the armature and the magnetic core thus becomes large, as a result of which a higher field strength must be generated, ie a winding with a higher number of ampere turns is required. Since this trigger magnet can be switched sluggishly, the speed of the weaving machine is reduced.
- the distances of the grippers overlap in the transfer area. This means that the thread transfer takes place while the grabber and the picker are still in motion. At this point, the thread clamp is actuated, during which the actuating element exerts pressure on the hook.
- the clamping force is predetermined by the type of thread.
- the clamping force In the mechanical as well as in the electro-mechanical control of the thread clamp, the clamping force must therefore be set accordingly. Controls of this type prove to be at least restrictive for weaving with different types of thread, because on the one hand an average clamping force has to be determined by means of tests and on the other hand an adaptation of the clamping force during the operation of the weaving machine is not possible and is therefore not provided.
- the invention solves the problem of improving a gripper and a weft insertion device.
- the thread clamp of the hook is positively controlled by an actuator arranged in the hook, i.e. without external forces, so that any load on the hook head, the hook guide and the warp threads is avoided. This means that readjustments and repairs to the gripper elements are largely eliminated. Warp thread breaks are avoided, which significantly reduces operating costs and considerably increases weaving performance.
- the thread clamp can during the
- the thread clamp performs the following functions during the weft insertion cycle:
- the rapier gripper takes the weft thread from the thread feeder and
- the thread clamp of the holer gripper releases the weft thread; 5.
- the thread clamps are released for cleaning and 6. If necessary, the clamping force of the thread clamps is changed.
- the thread clamps for the bringer and holster grippers are essentially of a similar design, as a result of which the actuators are controlled by means of the same control device. This significantly reduces manufacturing costs.
- the use of transformers to actuate the thread clamp avoids the force acting on the hooks.
- FIG. 1 shows a first embodiment of a gripper according to the invention
- FIG. 2 shows a second embodiment of a gripper according to the invention
- FIG. 3 shows a third embodiment of a gripper according to the invention
- 4 shows a fourth embodiment of a gripper according to the invention
- Fig. 5 is a force / time diagram, the cycle of the thread clamping effect within a weft insertion
- FIG. 6 shows an embodiment of a weft insertion device according to the invention.
- Embodiment of a gripper according to the invention shows.
- the gripper contains a housing 1, an electromagnet 2 and a thread clamp 3.
- the housing 1 consists of a base body 4 and a cover part 5, which are connected to one another by means not shown.
- the electromagnet 2 is arranged on the one hand on the base body.
- the thread clamp 3 comprises a clamping lever 6, which is designed as a two-armed lever and is pivotably arranged on an axis 7, and a clamping surface 8 formed on the base body 4.
- a lever arm has a clamping section 9, which interacts with the clamping surface formed on the base body 4 and at the free end an angled section 10 which, together with the base body, forms an inlet gap for a weft thread (not shown).
- connection section 11 for a transport unit is formed on the base body 4. Furthermore, a spring 12 is provided in order to prestress the clamping section 9 against the clamping surface 8.
- the gripper is also equipped with a stop element 15 for the weft thread.
- a linear motor or a servo motor can be used. If such drive means are used, the clamping lever is advantageously coupled to the drive axis of the motor.
- the gripper contains a housing 21, a thread clamp 22 and a piezo quartz element 23.
- the housing consists of a base body 24 and a cover part 25.
- the thread clamp comprises a strip-shaped clamping part 26, which consists of a resilient material and a clamping section 17 formed on the base body 24.
- the clamping part 26 is fastened at one end to the base body 24 and is provided at the other end with an angled section 27 which forms an inlet gap for a weft thread, not shown, with the base body.
- the clamping part 26 is provided with a shoulder 28 and a pin 29 which projects transversely to the shoulder.
- the piezo quartz element 23 is fastened on the one hand to the base body and on the other hand is provided with a coupling part 30 which engages with the pin 29.
- the connection section 11 for the transport unit is formed on the base body 24.
- the embodiment according to the invention shown in FIG. 3 differs from that of FIG. 1 by the design and arrangement of the electromagnet.
- the gripper contains a housing 31, a thread clamp 32 and an electromagnet 33.
- the housing consists of a
- the thread clamp 32 contains a guide member 36 for a weft thread, not shown, and a clamping part 37.
- the guide member 36 is strip-shaped and has an angled section 38.
- the clamping part 37 is also strip-shaped and has an angled section 39.
- the clamping part is arranged lying on the guide part, so that the angled sections 38,, 39 form a V-shaped inlet gap for a weft thread, not shown.
- the electromagnet 33 has a U-shaped core 43 and a winding 40 and is arranged below the guide part so that the guide part rests on the end faces of the legs of the core.
- the guide part 36 consists of magnetically non-conductive material, while the clamping part 37 forms the magnet armature and consists of magnetically conductive material.
- the base body 34 also has the connection section 11 for the transport unit. Instead of the stop element, a stop bracket 41 is provided in this embodiment.
- the embodiment according to the invention shown in FIG. 4 differs from that according to FIG. 2 only in the design and arrangement of the piezo quartz element. If electrical current is applied to the piezo quartz element 19, this also expands in the x direction and closes the thread gap 55, so that the weft thread is clamped. No further detailed description is given.
- the actuator is actuated by induction.
- a primary induction coil 70 which is arranged outside the gripper
- a secondary induction coil 71 which is arranged in the housing 1, 21, 31 of the gripper, are provided.
- a converter and amplifier 72 are also arranged in the housing and are connected to the actuator via connecting lines 52.
- An opening 75 is provided in each of the cover parts 5, 25, 35.
- the figure shows a diagram with an abscissa for the angle of rotation of the main shaft of the weaving machine and with an ordinate for the clamping force.
- three operating positions are defined depending on the angle of rotation for the thread clamp, namely hold A, clamps A + B and ventilation AC.
- a force A, B, C is assigned to each operating position.
- the holding force A is applied exclusively by the resilient element 26 and also acts when the loom and the actuator are switched off.
- the weft thread to be inserted is first inserted into the open thread clamp and then subjected to the clamping force B generated by the actuator.
- the weft thread is clamped with a force which is the sum of the forces A + B.
- the clamping force B can be infinitely adjusted up to the maximum in order to reliably avoid weft thread losers.
- the actuators are measured according to one Control program reversed so that a release force is generated which is the difference of the forces AC.
- the thread clamp in the ventilation position can be blown out.
- FIG. 6 shows a weft insertion device with a rapier gripper 61, a rapier rapier 62, a transport unit 64, which in each case conveys the rapier or rapier rapier over the center 63 of the weaving width and a device for actuating the actuators.
- the transport unit 64 comprises a gripper belt 66 with a guide 69 and a belt wheel 67 which is drive-connected to a drive means, not shown.
- the gripper belt is made of a flexible material, e.g. Plastic composite.
- the device for actuating the actuators is arranged in the area of the thread transfer above the shed formed and on both sides of the center 63.
- the device contains two air transformers or converters, which comprises a primary induction coil 70 and the secondary induction coil 71 arranged on the gripper 61, 62, and a control device 65, which is connected via lines 68 in each case to the primary induction coils 70 in order to switch the primary induction coils as a function of the To control the angle of rotation of the main shaft of the weaving machine and / or the textile or weaving data.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Treatment Of Fiber Materials (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29808997U | 1998-05-18 | ||
DE29808997U DE29808997U1 (en) | 1998-05-18 | 1998-05-18 | Gripper and a weft insertion device for a rapier weaving machine |
PCT/CH1999/000104 WO1999060193A1 (en) | 1998-05-18 | 1999-03-08 | Gripper and weft insertion device for a rapier loom |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1082478A1 true EP1082478A1 (en) | 2001-03-14 |
EP1082478B1 EP1082478B1 (en) | 2004-07-14 |
Family
ID=8057365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99906007A Expired - Lifetime EP1082478B1 (en) | 1998-05-18 | 1999-03-08 | Gripper and weft insertion device for a rapier loom |
Country Status (14)
Country | Link |
---|---|
US (1) | US6305434B1 (en) |
EP (1) | EP1082478B1 (en) |
JP (2) | JP2002515553A (en) |
KR (1) | KR100592469B1 (en) |
CN (1) | CN1193122C (en) |
AU (1) | AU2606999A (en) |
BR (1) | BR9910541B1 (en) |
CA (1) | CA2328936C (en) |
DE (2) | DE29808997U1 (en) |
ES (1) | ES2224605T3 (en) |
HK (1) | HK1035216A1 (en) |
RU (1) | RU2208073C2 (en) |
TR (1) | TR200003401T2 (en) |
WO (1) | WO1999060193A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3916140A1 (en) | 2020-05-26 | 2021-12-01 | STÄUBLI BAYREUTH GmbH | Rapier, method for drawing in a weft yarn with such a rapier and weaving loom comprising such a rapier |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29808997U1 (en) * | 1998-05-18 | 1998-07-30 | Textilma Ag, Hergiswil | Gripper and a weft insertion device for a rapier weaving machine |
DE59908000D1 (en) * | 1998-09-02 | 2004-01-22 | Sultex Ag Rueti | Method and system for introducing a weft thread in a rapier loom |
EP0984089B1 (en) * | 1998-09-02 | 2003-12-10 | Sultex AG | Method and device for weft insertion in a gripper loom |
FR2783842A1 (en) * | 1998-09-30 | 2000-03-31 | Icbt Diederichs Sa | DEVICE FOR INSERTING THE WEFT YARN |
DE19852794B4 (en) * | 1998-11-16 | 2004-03-25 | Lindauer Dornier Gmbh | Controllable weft feeder and clamping device for weaving machines |
DE29908543U1 (en) | 1999-05-14 | 1999-08-12 | Lindauer Dornier Gmbh, 88131 Lindau | Control device for actuating the clamping lever of a rapier, in particular a slave gripper in rapier weaving machines |
DE10124151C1 (en) * | 2001-05-17 | 2003-03-27 | Dornier Gmbh Lindauer | Lance-type weft-gripping shuttle for loom, includes jaw section actuated through toggle joint by flexible connection from release mechanism |
EP1427877A1 (en) | 2001-09-17 | 2004-06-16 | PBT (IP) Limited | High speed yarn transfer system incorporating reversing linkage and electro-optical synchronisation |
ATE410534T1 (en) * | 2002-02-25 | 2008-10-15 | Gividi Italia Spa | THREAD CLAMP FOR A HOOK IN A HOOK WEAVING MACHINE |
US7543610B2 (en) | 2006-06-16 | 2009-06-09 | Sultex Ag | Thread clamp for a rapier head |
EP1540058B1 (en) * | 2002-09-20 | 2009-10-28 | Picanol N.V. | Feed rapier for a rapier loom |
DE10252053A1 (en) * | 2002-11-08 | 2004-06-09 | Lindauer Dornier Gmbh | Weft gripper/cutter, at a gripper loom, has a lever and a spring to tense a yarn clamping arm which is released through an auxiliary energy supply to open the yarn clamp |
DE10393916D2 (en) * | 2002-10-10 | 2005-08-25 | Dornier Gmbh Lindauer | Method for controlling components of a working medium in weaving machines and looms for carrying out the method |
DE10247375A1 (en) * | 2002-10-10 | 2004-05-06 | Lindauer Dornier Gmbh | Weft gripper/cutter, at a gripper loom, has a lever and a spring to tense a yarn clamping arm which is released through an auxiliary energy supply to open the yarn clamp |
KR100498003B1 (en) * | 2004-10-21 | 2005-07-01 | 대흥정밀공업 주식회사 | Rapier and grippers for rapier loom |
EP1806443B1 (en) * | 2006-01-06 | 2009-02-11 | Sultex AG | Feeding gripper for a shuttleless weaving loom |
EP1811068B1 (en) * | 2006-01-24 | 2009-06-17 | Sultex AG | Controlled weft brake |
EP1860216A1 (en) * | 2006-05-26 | 2007-11-28 | Sultex AG | Power supply for a gripper head |
US20080018176A1 (en) * | 2006-05-26 | 2008-01-24 | Sultex Ag | Power supply for a rapier head |
EP1867766A1 (en) * | 2006-06-16 | 2007-12-19 | Sultex AG | Thread trapper for a gripper head |
EP1918437A1 (en) * | 2006-11-02 | 2008-05-07 | Sultex AG | Method and device for weft insertion |
CN101352797B (en) * | 2008-06-27 | 2012-02-15 | 廖军艺 | Method for producing wire clamp of carpet weaving machine |
DE102009037127A1 (en) * | 2009-08-11 | 2011-02-17 | Lindauer Dornier Gmbh | Gripper head of a weaving machine |
BE1019271A3 (en) * | 2010-04-02 | 2012-05-08 | Picanol Nv | DRIVE AND METHOD FOR DRIVING DRIVER CARRIERS. |
EP2388361A1 (en) * | 2010-05-18 | 2011-11-23 | Textilma AG | Gripper and weft thread insertion device for a rapier weaving machine |
DE102010044127B3 (en) * | 2010-11-18 | 2011-12-29 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Gripper head for the entry of weft threads on a rapier loom and a rapier loom with such a gripper head |
WO2012165231A1 (en) * | 2011-05-27 | 2012-12-06 | 三菱レイヨン株式会社 | Loom and weaving method using said loom |
CN103320943B (en) * | 2013-07-18 | 2015-07-22 | 南京海拓复合材料有限责任公司 | Chuck applicable to weaving of non-crimped fabrics |
CN110209069B (en) * | 2019-06-28 | 2020-03-31 | 武汉纺织大学 | Magnetic levitation gripper precise weft insertion control method and system and information processing terminal |
KR102562449B1 (en) | 2021-12-13 | 2023-08-02 | 일성기계공업 주식회사 | Carrier Carrying Weft Yarn |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1956553C3 (en) * | 1967-04-04 | 1974-08-01 | Lindauer Dornier Gmbh, 8990 Lindau | Weft insertion device for shuttleless looms |
FR2214774B1 (en) * | 1973-01-22 | 1976-05-14 | Saurer Diederichs Sa | |
GB2059455A (en) * | 1979-09-29 | 1981-04-23 | Northrop Weaving Machinery Ltd | Improvements in or relating to looms with stationary weft supply |
BE1000703A4 (en) | 1987-06-29 | 1989-03-14 | Picanol Nv | Wire clamp. |
DE59306886D1 (en) * | 1993-05-12 | 1997-08-14 | Rueti Ag Maschf | Thread holder for a rapier gripper and rapier weaving machine with thread holder |
JPH07331558A (en) * | 1994-06-06 | 1995-12-19 | Toyota Autom Loom Works Ltd | Weft-insertion method for rapier loom and apparatus therefor |
EP0904437A1 (en) * | 1996-04-19 | 1999-03-31 | Picanol N.V. | Device for opening a gripper clip of a mechanical loom gripper |
DE29808997U1 (en) * | 1998-05-18 | 1998-07-30 | Textilma Ag, Hergiswil | Gripper and a weft insertion device for a rapier weaving machine |
-
1998
- 1998-05-18 DE DE29808997U patent/DE29808997U1/en not_active Expired - Lifetime
-
1999
- 1999-03-08 CA CA002328936A patent/CA2328936C/en not_active Expired - Fee Related
- 1999-03-08 JP JP2000549792A patent/JP2002515553A/en not_active Withdrawn
- 1999-03-08 CN CNB998063428A patent/CN1193122C/en not_active Expired - Fee Related
- 1999-03-08 WO PCT/CH1999/000104 patent/WO1999060193A1/en active IP Right Grant
- 1999-03-08 AU AU26069/99A patent/AU2606999A/en not_active Abandoned
- 1999-03-08 BR BRPI9910541-1A patent/BR9910541B1/en not_active IP Right Cessation
- 1999-03-08 DE DE59909965T patent/DE59909965D1/en not_active Expired - Fee Related
- 1999-03-08 US US09/700,805 patent/US6305434B1/en not_active Expired - Fee Related
- 1999-03-08 ES ES99906007T patent/ES2224605T3/en not_active Expired - Lifetime
- 1999-03-08 TR TR2000/03401T patent/TR200003401T2/en unknown
- 1999-03-08 KR KR1020007012886A patent/KR100592469B1/en not_active IP Right Cessation
- 1999-03-08 EP EP99906007A patent/EP1082478B1/en not_active Expired - Lifetime
- 1999-03-08 RU RU2000131693/12A patent/RU2208073C2/en not_active IP Right Cessation
-
2001
- 2001-08-13 HK HK01105624A patent/HK1035216A1/en not_active IP Right Cessation
-
2006
- 2006-12-06 JP JP2006329992A patent/JP2007113171A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9960193A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3916140A1 (en) | 2020-05-26 | 2021-12-01 | STÄUBLI BAYREUTH GmbH | Rapier, method for drawing in a weft yarn with such a rapier and weaving loom comprising such a rapier |
US11795589B2 (en) | 2020-05-26 | 2023-10-24 | Staubli Bayreuth Gmbh | Rapier, method for drawing in a weft yarn with such a rapier and weaving loom comprising such a rapier |
Also Published As
Publication number | Publication date |
---|---|
US6305434B1 (en) | 2001-10-23 |
CA2328936A1 (en) | 1999-11-25 |
WO1999060193A1 (en) | 1999-11-25 |
DE29808997U1 (en) | 1998-07-30 |
EP1082478B1 (en) | 2004-07-14 |
TR200003401T2 (en) | 2001-03-21 |
BR9910541B1 (en) | 2009-01-13 |
JP2007113171A (en) | 2007-05-10 |
CN1193122C (en) | 2005-03-16 |
ES2224605T3 (en) | 2005-03-01 |
AU2606999A (en) | 1999-12-06 |
KR20010043680A (en) | 2001-05-25 |
DE59909965D1 (en) | 2004-08-19 |
CA2328936C (en) | 2006-11-21 |
CN1301315A (en) | 2001-06-27 |
HK1035216A1 (en) | 2001-11-16 |
BR9910541A (en) | 2001-01-30 |
JP2002515553A (en) | 2002-05-28 |
RU2208073C2 (en) | 2003-07-10 |
KR100592469B1 (en) | 2006-06-22 |
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