EP2034061A1 - Dispositif de coupe pour une machine à tisser et son procédé de fonctionnement - Google Patents
Dispositif de coupe pour une machine à tisser et son procédé de fonctionnement Download PDFInfo
- Publication number
- EP2034061A1 EP2034061A1 EP08161824A EP08161824A EP2034061A1 EP 2034061 A1 EP2034061 A1 EP 2034061A1 EP 08161824 A EP08161824 A EP 08161824A EP 08161824 A EP08161824 A EP 08161824A EP 2034061 A1 EP2034061 A1 EP 2034061A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- spring
- cutting device
- pneumatic actuator
- weaving machine
- 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
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005520 cutting process Methods 0.000 title claims description 121
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 238000009941 weaving Methods 0.000 claims description 31
- 238000003825 pressing Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/70—Devices for cutting weft threads
Definitions
- the invention relates to a cutting device for a loom according to the preamble of claim 1 and a method for operating the same according to the preamble of claim 8 and a weaving machine with such a cutting device and for carrying out such a method.
- the various weaving machine types such as air jet loom, rapier weaving machine or projectile weaving machine, are named based on the type of weft insertion.
- rapier weaving the weft thread is registered for example by means of a fixed to a rod or a flexible belt rapier in a shed and taken over at a transfer point in the middle part of the shed of a gripper and carried on.
- the Bringergreifer has the task to take the presented by means of a thread roving weft safe to enter the same in the shed and precisely feed the gripper rapier.
- the submitted weft thread must be separated from the previously entered weft before it can be entered into the shed.
- a cutting device which comprises a fixed and a movable cutting edge.
- the movable blade is formed on a cranked lever which communicates with a pneumatic cylinder containing a piston and a spring.
- the cutting device is at rest by acting on the piston Spring kept open.
- the compressed air cylinder is acted upon by a control valve with compressed air.
- the rapier grippers are moved at high speed during weft insertion.
- the rapier has a speed of typically 20 m / s, i. he travels a distance of 2 cm in 1 ms. Accordingly, the cutting device must be able to separate the weft within a period of a few ms, since this is not cut clean but torn off.
- the object of the invention is to provide a cutting device for a weaving machine, in particular a rapier weaving machine, and a method for separating a weft thread to be introduced into a shed of a weaving machine, in particular a rapier weaving machine, which are capable of the weft thread within a period of time cleanly separated from a few ms.
- Another object of the invention is to provide a weaving machine with such a cutting device and for carrying out such a method.
- the cutting device according to the invention for a weaving machine comprises a first cutting edge on a first, typically fixed cutting carrier, a second cutting edge on a second, movably guided cutting carrier and a drive, which cooperates with the second cutting carrier, and a pneumatic actuator and a feather contains one in a shed to be entered or registered weft thread, wherein the spring by means of the pneumatic actuator can be tensioned and optionally the two cutting edges are moved apart, and wherein by means of the force of the spring, the two cutting edges are closed.
- the second, movable blade carrier is designed as a lever arm, in particular as a rotatable or rotatably mounted lever arm.
- the pneumatic actuator as a piston / cylinder unit or pneumatic rotary drive are formed, and / or the spring formed as a compression spring, in particular as a helical compression spring, wherein the spring may be arranged for example in the piston / cylinder unit.
- the cutting device comprises a control valve for controlling the pneumatic actuator, for example for pressurizing the actuator to tension the spring and optionally to move the blades apart, and / or for venting the actuator to trigger the cutting operation.
- the cutting device additionally comprises a sensor for detecting the cutting time and occasionally a control and control unit, which may be connected to the sensor and the control valve to automatically correct possible deviations from a predetermined cutting time.
- a cutting device which has a first cutting edge on a first, typically fixed cutting carrier, a second cutting edge on a second, movably guided cutting carrier and a drive includes, which cooperates with the second blade carrier, and containing a pneumatic actuator and a spring, and separated the weft thread by means of the cutting device.
- the spring is / are tensioned by means of the pneumatic actuator, the two blades are opened and used to separate the actuator Weft the two cutting edges closed by the force of the spring.
- the pneumatic actuator is controlled by means of a control valve.
- the spring is tensioned and optionally the blades are moved apart by applying pressure to the pneumatic actuator, and / or the cutting process is triggered by the pneumatic actuator being vented.
- the cutting time is / are detected with a sensor and possible deviations between the detected cutting time and a predetermined cutting time are automatically corrected.
- the invention comprises a weaving machine, in particular a rapier weaving machine with a cutting device according to one of the embodiments and variants described above and / or equipped for carrying out a method according to the above description.
- the cutting device according to the invention and the method according to the invention for separating a weft thread to be introduced or inserted into a shed have the advantage that the spring can store enough potential energy to safely separate the weft thread, that the potential energy of the spring at least in principle less than 1 ms can be converted into kinetic energy, and the pneumatic actuator and the pressure supply of the same can be designed so that this comparatively slow spring, for example, within 30 ms, tensioned. Compared to a direct drive the closing movement by the pneumatic actuator, as described in the cited prior art, this results in significant savings.
- Fig. 1 shows a schematic view of an embodiment of a loom, as used in the context of the present invention.
- the weaving machine 1 is formed in the illustrated embodiment as a rapier and includes a Bringergreifer 3 and a Holergreifer 4, each containing a thread clamp to receive a recorded weft yarn 2 and hold.
- the Bringerund Holergreifer is typically each attached to a rod, not shown, or a flexible band, not shown, which are displaced and driven in the insertion direction.
- the weft thread can be entered into a shed and at a transfer point in the middle part of the shed from the gripper rapier be taken over and forwarded.
- the weaving machine may comprise, for example, a yarn package 2a and a yarn storage 2b, from which the weft yarn 2 can be withdrawn, and occasionally a yarn brake 5 and / or a sensor 6 to measure the yarn tension and / or optionally a thread rug or a color picker 7 with several Fadenvorlegern and / or a control unit 9 for controlling the weft insertion.
- the weaving machine comprises a cutting device 10 for separating the weft thread 2, for example as shown in FIG Fig. 1 shown to be separated from the previously entered weft before it is entered into the shed.
- Fig. 2 shows a detailed view of a rapier 3 and a cutting device 10 of the embodiment of Fig. 1 before separating the weft.
- the weft thread 2 to be inserted and picked up by the picking rapier 3 is moved forward in the weft insertion direction by the picking rapier 3.
- Fig. 2 shows the Bringergreifer in three different times, which are represented by solid and dashed outlines.
- the weft thread 2 is held in a thread clamp of the bringer rapier and deflected at a deflection point 3a in the bringer rapier.
- the weft thread over a thread rug 7a of a in Fig. 2 Thread storage not shown, while on the other hand, as in Fig. 2 shown, is still connected to the previously entered weft.
- a cutting device 10 is provided to separate the weft thread to be entered.
- the cutting time and the time required for the separation period is critical because too early in the separation of the weft thread too little train is exerted on the same to pull it safely during recording in the thread clamp, and on the other hand in a too late separation of the weft in the cutting device is torn.
- Fig. 3 shows a schematic view of an embodiment of a cutting device 10 according to the present invention.
- the cutting device comprises a first cutting edge 12.1 on a first, typically fixed blade carrier 11.1, a second cutting edge 12.2 on a movable and guided blade carrier 11.2 and a drive which cooperates with the movable blade carrier, and which includes a pneumatic actuator 14 and a spring 15 to separate a weft inserted or inserted into a shed, wherein the spring 15 is tensioned by means of the pneumatic actuator 14 and optionally the two Cutting 12.1, 12.2 are movable apart, and wherein by means of the force of the spring, the two cutting edges are closed.
- the movable blade carrier is designed as a lever arm, for example as a rotatable or rotatably mounted lever arm.
- a lever arm for example as a rotatable or rotatably mounted lever arm.
- the pneumatic actuator may be designed as a piston / cylinder unit 14 with a pressure cylinder 14a and a longitudinally movable piston 14b in the same.
- the spring 15 may be formed as a compression spring, for example as a helical compression spring, which, for example, as in Fig. 3 shown, may be arranged in the piston / cylinder unit.
- the cutting device 10 comprises a control valve 16 for controlling the pneumatic actuator 14, for example, to pressurize the actuator to tension the spring 15 and optionally to move the blades apart, and / or occasionally for venting the actuator 14th to trigger the cutting process.
- the control valve can be designed for example as a 3/2-way valve.
- a pressure line or a pressure source 17 may occasionally be provided in order to supply the pneumatic actuator 14 or the control valve 17 with compressed air.
- Fig. 4 shows a schematic view of a second embodiment of a cutting device 10 according to the present invention.
- the cutting device comprises a first cutting edge 12. 1 on a first, typically stationary cutting carrier 11. 1, a second cutting edge 12.2 on a movable and guided blade carrier 11.2 and a drive, which cooperates with the movable blade carrier, and which includes a pneumatic actuator 14 and a spring 15 to separate a wedge thread to be inserted or inserted into a shed, wherein the spring 15 by means of pneumatic actuator 14 can be tensioned and optionally the two cutting edges 12.1, 12.2 are moved apart, and wherein by means of the force of the spring, the two cutting edges are closed.
- the movable blade carrier is designed as a lever arm, for example as a rotatable or rotatably mounted lever arm.
- the pneumatic actuator be designed as a pneumatic rotary drive 14 '.
- the spring 15 may be formed, for example, as a compression spring, for example as a helical compression spring. But it is also possible, for example, to form the spring 15 as a torsion spring and to integrate occasionally in the pneumatic rotary drive.
- the cutting device 10 comprises a control valve 16 for controlling the pneumatic actuator 14.
- a control valve 16 for controlling the pneumatic actuator 14.
- Fig. 5 shows an oblique view of a third embodiment of a cutting device 10 according to the present invention.
- the cutting device comprises a first cutting edge 12.1 on a first, typically fixed blade carrier 11.1, a second cutting edge 12.2 on a movable and guided blade carrier 11.2 and a drive, which cooperates with the movable blade carrier, and a pneumatic actuator 14 and a spring 15 contains, to separate a weft thread 2 to be entered or registered in a shed, wherein the spring 15 can be tensioned by means of the pneumatic actuator 14 and optionally the two cutting edges 12.1, 12.2 are moved apart, and wherein the two cutting edges can be closed by means of the force of the spring ,
- the movable blade carrier is designed as a lever arm, for example as a rotatable or rotatably mounted lever arm.
- a lever arm for example as a rotatable or rotatably mounted lever arm.
- the pneumatic actuator be designed as a piston / cylinder unit 14.
- the spring 15 may be formed as a compression spring, for example as a helical compression spring, which, for example, as in Fig. 5 shown, can be arranged coaxially with the piston / cylinder unit.
- the movement of the piston in the piston-cylinder unit 14 may, for example, as in Fig. 5 are transmitted by means of a piston rod 14c on a cranked lever 14d, which in turn can be connected to the movable blade carrier 11.2.
- a thread ripper 7a shown is not part of the cutting device 10.
- the cutting device 10 comprises a control valve 16 for controlling the pneumatic actuator 14.
- a control valve 16 for controlling the pneumatic actuator 14.
- the cutting device 10 may additionally comprise a sensor 13 for detecting the cutting time and, if necessary, a control and control unit 18, which may be occasionally connected to the sensor and the control valve 16 to possible deviations from to correct a given cutting time.
- Possible deviations between the detected and predetermined cutting time are mainly due to the cutting device, for example, the switching time of the control valve or the venting of the pneumatic actuator may change or by the friction conditions in the pneumatic actuator or between the blades change, for example in the time a machine stop or as a result of temperature changes or wear.
- the described Control of the cutting time has the advantage that it can be precisely adhered to, even if the time interval between initiation of the cutting process and cutting time, ie the time by the weft is separated, is subject to change in practical operation.
- a cutting device 10 which comprises a first cutting edge 12.1 on a first, typically fixed blade carrier 11.1, a second cutting edge 12.2 on a movable and guided blade carrier 11.2 and a drive, which cooperates with the movable blade carrier, and a pneumatic Actuator 14, 14 'and a spring 15 contains, and the weft thread 2 separated by means of the cutting device 10.
- the spring 15 is / are tensioned by means of the pneumatic actuator 14, 14 ', the two cutting edges 12.1, 12.2 are opened and, to separate the weft thread, the two cutting edges are closed by means of the force action of the spring.
- the pneumatic actuator 14, 14 ' is controlled by means of a control valve 16.
- the spring 15 is tensioned and optionally the cutters are moved apart by applying pressure to the pneumatic actuator, and / or the cutting process is triggered by the pneumatic actuator being vented.
- the cutting time is / are detected with a sensor 13 and possible deviations between the detected cutting time and a predetermined cutting time are corrected.
- the inventive cutting device and the inventive method for separating a weft thread in a loom thanks to the spring drive of the closing movement, it is possible to separate the weft thread within a few milliseconds so that it can be cut cleanly, even if the cutting device is used on a high-speed rapier weaving machine.
- the described control for the cutting time allows to comply with the same more accurately, even if the time interval between the initiation of the cutting operation and the time when the weft thread is separated changes in practical operation.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08161824A EP2034061B1 (fr) | 2007-09-10 | 2008-08-05 | Dispositif de coupe pour une machine à tisser et son procédé de fonctionnement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07116005 | 2007-09-10 | ||
EP08161824A EP2034061B1 (fr) | 2007-09-10 | 2008-08-05 | Dispositif de coupe pour une machine à tisser et son procédé de fonctionnement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2034061A1 true EP2034061A1 (fr) | 2009-03-11 |
EP2034061B1 EP2034061B1 (fr) | 2010-09-01 |
Family
ID=39180833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08161824A Expired - Fee Related EP2034061B1 (fr) | 2007-09-10 | 2008-08-05 | Dispositif de coupe pour une machine à tisser et son procédé de fonctionnement |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090065089A1 (fr) |
EP (1) | EP2034061B1 (fr) |
JP (1) | JP2009068157A (fr) |
CN (1) | CN101387038A (fr) |
DE (1) | DE502008001238D1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104593936A (zh) * | 2015-03-02 | 2015-05-06 | 林允杜 | 撞击式高速剪纬装置 |
CN105177824A (zh) * | 2015-09-17 | 2015-12-23 | 江苏华佳丝绸有限公司 | 一种用于解决剑杆织机上纬向张力大的剪刀装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1019379A3 (nl) * | 2010-06-21 | 2012-06-05 | Wiele Michel Van De Nv | Inrichting en werkwijze voor het afsnijden van de in te weven poolgarens in een axminster weefmachine. |
BE1019807A3 (nl) * | 2011-07-12 | 2012-12-04 | Picanol | Inrichting en werkwijze voor het klemmen van een inslagdraad. |
CN108754795A (zh) * | 2018-09-12 | 2018-11-06 | 太平洋纺织机械(常熟)有限公司 | 剑杆织机用的纬纱剪刀装置 |
TWI732251B (zh) * | 2018-09-27 | 2021-07-01 | 義大利商桑德森力瑪集團有限公司 | 用於無梭子紡織機的緯紗切割裝置 |
CN109457375B (zh) * | 2018-11-19 | 2020-06-16 | 南京玻璃纤维研究设计院有限公司 | 一种2.5d预制体纬纱剪切机构 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1267539A (en) * | 1968-07-11 | 1972-03-22 | Glanzstoff Ag | Device for severing a travelling yarn thread |
DE4020030A1 (de) * | 1990-06-23 | 1992-01-09 | Dornier Gmbh Lindauer | Schussfadenschneidvorrichtung |
EP0683256A1 (fr) | 1994-05-20 | 1995-11-22 | NUOVO PIGNONE S.p.A. | Dispositif coupe-fil pour métier à tisser à jet d'air |
DE19537867A1 (de) * | 1995-10-12 | 1997-04-17 | Chemnitzer Webmasch Gmbh | Schußfadenschneidvorrichtung für Webmaschinen, insbesondere Doppelteppichwebmaschinen |
DE10014366A1 (de) * | 2000-03-20 | 2001-10-04 | Dornier Gmbh Lindauer | Fadenschneidvorrichtung für Webmaschinen |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2250866A (en) * | 1939-06-06 | 1941-07-29 | Collins & Aikman Corp | Weft end control means |
US2448161A (en) * | 1947-02-04 | 1948-08-31 | Crompton & Knowles Loom Works | Thread control for automatic looms |
US2630142A (en) * | 1951-04-07 | 1953-03-03 | Crompton & Knowles Loom Works | Thread control for weft replenishing looms |
US2965138A (en) * | 1958-04-15 | 1960-12-20 | Crompton & Knowles Corp | Filling thread control for weft replenishing loom |
NL6502157A (fr) * | 1965-02-19 | 1966-08-22 | ||
CH464106A (de) * | 1967-10-13 | 1968-10-15 | Fischer Ag Georg | Einrichtung zur Steuerung einer Schussgarn-Schneidevorrichtung einer Webmaschine |
EP0108183B1 (fr) * | 1982-11-08 | 1986-09-10 | GebràDer Sulzer Aktiengesellschaft | Métier à tisser |
DE3524727A1 (de) * | 1985-07-11 | 1987-01-22 | Dornier Gmbh Lindauer | Verfahren zum schussfadeneintrag bei schuetzenlosen webmaschinen durch ins webfach vorgeschobene und wieder zurueckgezogene, mit klemmvorrichtungen fuer den schussfaden ausgeruestete greifer |
JPH01260040A (ja) * | 1988-04-06 | 1989-10-17 | Tsudakoma Corp | よこ糸抜き取り装置 |
DE58908655D1 (de) * | 1988-08-25 | 1995-01-05 | Rueti Ag Maschf | Verfahren zum Vermeiden von Spannungsspitzen eines Schussfadens beim Schusseintrag während des Bremsvorganges. |
JP2848684B2 (ja) * | 1989-11-16 | 1999-01-20 | ゲブリユーダー ズルツアー アクチエンゲゼルシヤフト | よこ糸分配機構 |
FR2659361B1 (fr) * | 1990-03-06 | 1994-07-29 | Saurer Diederichs Sa | Dispositif de detissage automatique pour machines a tisser avec organes d'insertion mecanique de la trame. |
US5390709A (en) * | 1992-12-16 | 1995-02-21 | Martonffy; Barnabas | Fabric forming machine including pneumatic shedding apparatus and method |
DE59305157D1 (de) * | 1993-05-21 | 1997-02-27 | Rueti Ag Maschf | Schneidvorrichtung für Schussfäden und Webmaschine mit einer solchen Vorrichtung |
DE59908000D1 (de) * | 1998-09-02 | 2004-01-22 | Sultex Ag Rueti | Verfahren und System zum Eintragen eines Schussfadens in einer Greiferwebmaschine |
BE1014135A3 (nl) * | 2001-04-20 | 2003-05-06 | Wiele Michel Van De Nv | Inrichting voor het aanreiken van inslagdraden op een grijperweefmachine. |
BE1014132A5 (nl) * | 2001-04-20 | 2003-05-06 | Wiele Michel Van De Nv | Inslagdraadklem voor het klemmen en lossen van inslagdraden van een weefmachine. |
DE10150504A1 (de) * | 2001-10-12 | 2003-04-17 | Iropa Ag | Fadenbremse |
EP1918437A1 (fr) * | 2006-11-02 | 2008-05-07 | Sultex AG | Procédé et dispositif pour l'insertion du fil de trame |
-
2008
- 2008-08-05 DE DE502008001238T patent/DE502008001238D1/de active Active
- 2008-08-05 EP EP08161824A patent/EP2034061B1/fr not_active Expired - Fee Related
- 2008-08-13 US US12/191,180 patent/US20090065089A1/en not_active Abandoned
- 2008-09-09 CN CNA2008102157365A patent/CN101387038A/zh active Pending
- 2008-09-09 JP JP2008230404A patent/JP2009068157A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1267539A (en) * | 1968-07-11 | 1972-03-22 | Glanzstoff Ag | Device for severing a travelling yarn thread |
DE4020030A1 (de) * | 1990-06-23 | 1992-01-09 | Dornier Gmbh Lindauer | Schussfadenschneidvorrichtung |
EP0683256A1 (fr) | 1994-05-20 | 1995-11-22 | NUOVO PIGNONE S.p.A. | Dispositif coupe-fil pour métier à tisser à jet d'air |
DE19537867A1 (de) * | 1995-10-12 | 1997-04-17 | Chemnitzer Webmasch Gmbh | Schußfadenschneidvorrichtung für Webmaschinen, insbesondere Doppelteppichwebmaschinen |
DE10014366A1 (de) * | 2000-03-20 | 2001-10-04 | Dornier Gmbh Lindauer | Fadenschneidvorrichtung für Webmaschinen |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104593936A (zh) * | 2015-03-02 | 2015-05-06 | 林允杜 | 撞击式高速剪纬装置 |
CN104593936B (zh) * | 2015-03-02 | 2016-02-03 | 李群星 | 撞击式高速剪纬装置 |
CN105177824A (zh) * | 2015-09-17 | 2015-12-23 | 江苏华佳丝绸有限公司 | 一种用于解决剑杆织机上纬向张力大的剪刀装置 |
Also Published As
Publication number | Publication date |
---|---|
US20090065089A1 (en) | 2009-03-12 |
EP2034061B1 (fr) | 2010-09-01 |
CN101387038A (zh) | 2009-03-18 |
JP2009068157A (ja) | 2009-04-02 |
DE502008001238D1 (de) | 2010-10-14 |
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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 |
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