EP2157218A1 - Procédé et dispositif de commande d'un métier à tisser - Google Patents
Procédé et dispositif de commande d'un métier à tisser Download PDFInfo
- Publication number
- EP2157218A1 EP2157218A1 EP09166166A EP09166166A EP2157218A1 EP 2157218 A1 EP2157218 A1 EP 2157218A1 EP 09166166 A EP09166166 A EP 09166166A EP 09166166 A EP09166166 A EP 09166166A EP 2157218 A1 EP2157218 A1 EP 2157218A1
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- EP
- European Patent Office
- Prior art keywords
- weft
- sensor
- detected
- speed
- drive
- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000009941 weaving Methods 0.000 claims abstract description 49
- 238000003780 insertion Methods 0.000 claims abstract description 35
- 230000037431 insertion Effects 0.000 claims abstract description 35
- 230000001133 acceleration Effects 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 235000014676 Phragmites communis Nutrition 0.000 claims description 5
- 239000000356 contaminant Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000011109 contamination Methods 0.000 abstract 1
- 230000006870 function Effects 0.000 description 9
- 239000004744 fabric Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000012966 insertion method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
-
- 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
- D03D47/342—Handling the weft between bulk storage and weft-inserting means knot detection
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/14—Driving, starting, or stopping arrangements; Automatic stop motions for reducing speed temporarily
Definitions
- the invention relates to a method and a device for controlling a loom according to the preamble of claim 1 or preamble of claim 6 and a loom equipped for carrying out such a method or with such a device.
- weft insertion speed or speed When increasing the weft insertion speed or speed, however, has been pushed for some years to a limit by the weft yarns are loaded at the entry due to the higher weft insertion speed to the yield strength or limit of their tensile strength, so that a further increase in the entry speed to increased weft breakages leads.
- a weft break normally means a break in the weaving process and is often associated with a reduction in fabric quality.
- operator intervention is usually required to correct the weft breakage and restart the weaving operation. This means that an increase in the Weft insertion speed above an optimal value ultimately leads to a reduction in productivity.
- a method is known in which the speed of a weaving machine is controlled so that the speed is increased when the stop rate, which normally corresponds to the number of weft breaks per unit time, is below a predetermined value, and the speed is reduced when the stop rate over is the predetermined value.
- the predetermined value is determined either on the basis of the fabric quality achieved or on the occupant's workload, by the waiting time which elapses until the operator eliminates the weft break, together with the time required for the remedy, depending on the available time of the operator is determined.
- the apparatus described herein includes a plurality of weft feeders, each comprising a yarn package, a sensor, a yarn store, and an accelerator nozzle. Deviations in the yarn quality of the weft thread can be detected with the sensor and the corresponding weft feeder can be switched off. The weaving operation continues uninterrupted with the remaining weft feeds while an operator removes the weft yarn portion with the detected deviation. After removal of the weft thread section, the corresponding weft feeder is switched on again.
- the weaving operation can be continued without interruption in detecting and eliminating variations in yarn quality, and at the same time the number of weft breaks caused by variations in the yarn quality of the weft yarn can be reduced.
- the object of the invention is to provide a method and a device for controlling a weaving machine, by means of which the speed is controlled so that the number of weft breakages can be reduced compared with a weaving machine, which is operated at a constant speed, and by means of which the number of required interventions of the operator can be reduced compared with the prior art described above.
- Another object of the invention is to provide a weaving machine equipped for carrying out such a method or with such a device.
- a tissue is produced by means of the weaving machine.
- a weft thread is withdrawn from a yarn package and detected by a first sensor at least one quality feature of the withdrawn weft yarn, recorded during a weft insertion by a second sensor several times at least one load size of the weft and on the basis of the detected load size or sizes and Reason of the detected quality characteristics of the weft thread, the speed of the drive controlled.
- the speed of the drive is detected and used to control the same.
- the loading variables which are respectively recorded several times during a weft insertion or the load sizes of the weft thread which are recorded several times can be, for example, largely continuously, for example every 10 ms, 2 ms or 0.5 ms or continuously, for example, with the cycle time of the control unit used, are detected.
- weft yarn specifications and / or weft yarn data measured in the laboratory can be stored and occasionally used to control the rotational speed of the drive.
- a probability of a weft breakage is calculated on the basis of the detected load size or sizes and on the basis of the detected quality characteristics of the weft, the speed of the drive is increased, if the calculated probability of a weft break below a predetermined probability, and wherein the speed of the drive is reduced when the calculated probability of a weft break is above the predetermined probability.
- the quality characteristics of the weft thread detected by the first sensor include one or more of the following features: thick spots, thin spots, knots, inclusions, impurities, foreign fibers, changes in diameter, changes in color or changes in the texture.
- the detected load variables comprise one or more of the following variables: the distance covered as a function of time, the speed as a function of time, the acceleration, the tensile force, the tensile stress or the elongation. Regardless of the embodiment and variant, the detected load variable or variables of one or more weft entries can be used to control the rotational speed.
- the rotational speed of the drive is adapted, ie occasionally reduced or at least, for the entry of this weak point or section not increased.
- the invention further comprises a device for controlling a weaving machine, the latter being equipped with a shedding device, a weft insertion device for introducing weft threads, a reed for striking the inserted weft threads, and at least one controllable drive for driving the weaving machine.
- the device according to the invention comprises a first sensor for detecting at least one quality feature of a weft thread drawn from a yarn package, a second sensor for detecting at least one load size of the weft thread several times during a weft insertion, and a control unit for detecting the detected load size or - Size and control the speed of the drive due to the quality characteristics of the weft thread detected.
- the inventive device also includes a transducer for detecting the speed.
- control unit is configured to calculate a probability of weft breakage based on the detected load size (s) and quality characteristics of the weft yarn, and to increase the speed of the drive when the calculated probability of weft breakage is below a predetermined probability, and to reduce the speed of the drive, if the calculated probability of a weft break above the predetermined probability.
- the first sensor for detecting one or more quality features of the weft thread is designed as an optical and / or capacitive sensor.
- the first sensor may be configured, for example, to detect one or more of the following quality characteristics: thick spots, thin spots, knots, inclusions, contaminants, foreign fibers, changes in diameter, changes in color, or changes in texture.
- the second sensor is designed to detect at least one load variable as a contactless sensor. Regardless, the second sensor, for example, for Detecting one or more of the following load sizes formed: the distance traveled as a function of time, the speed as a function of time, the acceleration, the tensile force, the tensile stress or the elongation.
- the method according to the invention and the device according to the invention are suitable for all weft insertion methods, such as, for example, air, water and mechanical picking methods, as well as for alternative methods, such as weft laying in Raschel machines.
- the invention comprises a weaving machine equipped for carrying out a method according to one of the embodiments and variants described above and / or with a device according to one of the embodiments and variants described above.
- the weaving machine can be designed, for example, as a jet loom, rapier weaving machine or projectile weaving machine.
- the method and the device according to the present invention as well as the weaving machine according to the invention have the advantage that thanks to a first sensor, quality features of the weft thread and thus also deviations from the same on the weaving machine can be detected.
- a first sensor quality features of the weft thread and thus also deviations from the same on the weaving machine can be detected.
- an adequate reaction time is ensured until entry of the weft section in which a deviation has been detected.
- a second sensor loading variables of the weft thread can be detected several times during a weft insertion, so that the load occurring during acceleration and deceleration of the current weft thread is known at the current speed of the weaving machine. Due to the recorded load sizes and the quality characteristics of the weft, the speed of the drive can be controlled with more accurate prediction values than previously available.
- the method and the device according to the present invention make it possible, for example, to calculate the probability of a weft breakage on the basis of the recorded load sizes and on the basis of the recorded quality characteristics of the weft thread, wherein the Speed of the drive is advantageously controlled so that the probability of a weft breakage of a given probability corresponds. It is thus possible to continuously adapt the rotational speed of the drive both to the yarn quality detected on the weaving machine and to the load of the weft thread detected on the weaving machine. The adaptation of the rotational speed can take place much faster in the method according to the invention than, for example, in the document EP 0 371 483 A2 described method in which first a series of weft breakages must be awaited until a change in the speed can be made.
- the inventive method and the inventive device allows the speed to be controlled so that the number of weft yarn breaks compared with a weaving machine, the constant speed or with a method according to EP 0 371 483 A2 is reduced, and the number of required interventions of the operator is reduced compared with the above-described prior art to a predetermined value, which may be set, for example, by a predetermined value for the probability of weft breakage.
- Fig. 1 shows an embodiment of a jet loom 1 with a device for controlling the loom according to the present invention.
- the application of the device is not limited to jet looms, but these can be used with the same advantages on other types of weaving machines such as series sheds, rapier or projectile looms.
- the jet loom is designed as an air jet loom, which with a shedding device, not shown, a weft insertion device 3, 4, 5.1, 5.2, 6, 9, 12 for entering weft yarns 2, a reed 8 for striking the registered weft yarns, and at least one controllable Drive in Fig. 1 not shown, is equipped to power the loom 1.
- the weft insertion device may optionally include one or more of the following components: a yarn package 6, a yarn store 12, which may for example be a drum store, a yarn brake 9, one or more accelerator nozzles 3, 4 to accelerate the weft yarn drawn from the yarn store 12 and to supply a shed produced by means of the shedding device, a plurality of auxiliary nozzles 5.1, 5.2, to convey the weft in the shed, and one or more sensors 7.1, 7.2, for example, a Windungsbeatener 7.1, which can be arranged on the yarn store 12 to the withdrawal of turns or partial turns to detect from a storage drum, and / or arranged at the catch end of the shed weft guard 7.2 to detect the arrival of the recorded weft yarn 2.
- a weaving machine control 10 and occasionally control valves 13, 14, 15.1 may be provided to control the supply of compressed air to the accelerating nozzles 3, 4 and auxiliary nozzles 5.1, 5.2.
- the device according to the invention for controlling the weaving machine comprises a first sensor 11.1 to detect at least one quality feature of a weft yarn 2 withdrawn from a yarn package 6, a second sensor 11.2 to detect at least one load size of the weft yarn several times during a weft insertion, and a control unit to control the speed of the drive based on the detected load size or quantities and on the quality characteristics of the weft being detected.
- the control unit may for example be integrated into or formed as part of a weaving machine control 10, for example in that the control unit or parts thereof are designed as software modules.
- the device according to the invention additionally comprises a sensor for detecting the rotational speed.
- control unit is set up to calculate a probability p SFB of a weft break based on the detected load size (s) and quality characteristic (s) of the weft yarn 2, and to increase the speed of the drive if the calculated Probability p SFB of a weft break below a predetermined probability p SOLL , and reduce the speed of the drive, if the calculated probability p SFB a weft break above the predetermined probability p SOLL .
- the first sensor 11.1 is designed to detect one or more quality features of the weft thread 2 as an optical and / or capacitive sensor, wherein by means of an optical sensor primarily the appearance of the weft thread can be detected and by means of a capacitive sensor, the material and the mass.
- an optical sensor for example, the type Peyer-P551 can be used.
- the first sensor 11.1 may be configured, for example, to detect one or more of the following quality characteristics: thick spots, thin spots, knots, inclusions, contaminants, foreign fibers, changes in diameter, changes in color, or changes in texture.
- the second sensor 11.2 is designed to detect at least one load variable as a contactless sensor.
- a sensor may be used, which includes two sensors, which operate according to a correlation method.
- optical and electrostatic methods are known, in which the signals of two sensors arranged at a distance along a thread are evaluated and the speed of the thread is determined from the distance between the sensors and the time shift between the two signals.
- electrostatic process is for example in GB 1 249 610 disclosed.
- a suitable electrostatic transducer for correlation methods is, for example, in DE 44 08 312 A1 described. From the speed can be derived by differentiation, the acceleration, which is a measure of the load of the weft.
- the oscillations of the weft thread can be detected, for example, by means of an optical image sensor, and the yarn tension can be deduced therefrom.
- the second sensor 11.2 can be designed, for example, to detect one or more of the following load variables: the distance traveled as a function of time, the speed as a function of time, the acceleration, the tractive force, the tensile stress or the elongation.
- Fig. 2 shows a block diagram of an embodiment of a loom control 10 with a device according to the present invention.
- the weaving machine control of the embodiment may occasionally include an input unit 17 which is connected to a controllable drive 16 of the loom and to a weft insertion control 18.
- the controllable drive 16 includes a motor M and, if necessary, a memory for the speed and for speed limits and / or a frequency converter and / or an encoder EN, which are connected to each other in a conventional manner.
- the weft insertion control can be used for the in Fig. 1 be shown and contain, for example control circuits for control valves to control the supply of compressed air to the accelerating and auxiliary nozzles and / or a A thread brake drive circuit for controlling the deceleration of the weft during the weaving cycle.
- the weft insertion control may include a so-called time controller to control the switch-on times and duration of the acceleration nozzles and auxiliary nozzles and / or the pressure of the supplied compressed air as a function of the time required for the weft insertion, wherein the time required for the weft insertion, for example by means of a weft detector can be detected at the catch end of the shed.
- the loom control may include loom data storage 16a, which may include, for example, speed or speed limits, and / or weft insertion data storage 18a, which may include, for example, weft insertion time or average weft insertion rate or compressed air pressure. If necessary, it is also possible to provide a data memory 18b for the time and / or number of weft thread breaks that have occurred.
- the device comprises a first sensor 11.1 for detecting at least one quality feature of a weft thread drawn from a yarn package, a second sensor 11.2 for detecting at least one load size of the weft thread several times during a weft insertion, and a control unit 20, 21 for closing Reason of the detected load size or sizes and due to the or the detected quality characteristics of the weft yarn to control the speed of the drive 16.
- the control unit may, for example, as in Fig. 2 shown integrated in the weaving machine control 10 or formed as part thereof, for example by the control unit or parts thereof are designed as software modules. However, the control unit can also be designed as an addition to an existing loom control. Details and possible embodiments of the first and second sensor are within the scope of the description of in Fig. 1 illustrated jet loom explained.
- the control unit comprises a computing unit 20 for the probability p SFB of a weft breakage and a control unit 21 for controlling the rotational speed of the drive 16 so that the probability p SFB of a weft break corresponds to a predetermined probability p SOLL .
- the arithmetic unit 20 with the control unit 21 and typically with the first sensor 11.1 and / or the second sensor 11.2 and / or occasionally with a data memory 16a for loom data and / or a data memory 18a for weft insertion data and / or a data memory 18b for time and / or number of occurred weft breakages connected.
- the arithmetic unit 20 can also be connected to a data memory 22, which contains input weft thread specifications and / or weft yarn data measured in the laboratory.
- the control unit 21 is in turn connected to the controllable drive 16.
- the arithmetic unit is also connected to a disconnection unit 19, which selectively triggers a weaving machine stop or a change to another weft feed, if the detected quality feature is such that the use of the relevant weft thread section is not meaningful.
- the shutdown unit may be coupled with automatic weft breakage removal or automatic weft removal.
- the air-jet loom 1 with a shedding device, a weft insertion device 3, 4, 5.1, 5.2, 6, 9, 12 for entering weft yarns 2, a reed 8 for striking the registered weft yarns, and at least one controllable drive 16 is equipped to the To power weaving machine.
- a fabric is produced by means of the loom 1.
- a shed is formed by means of the shedding device, by means of the weft insertion device a weft thread 2 entered into the shed, struck the registered weft thread by means of Riet 8 to a fabric edge and the ailing weft by means of a Integrated change of subject. With the change of subject, a new shed is formed at the same time and the weaving process is continued cyclically in the sequence.
- a weft thread 2 is pulled off a yarn package 6 and detected by means of a first sensor 11.1 at least one quality feature of the drawn weft yarn, during a weft insertion by means of a second sensor 11.2 several times at least one load size of the weft thread detected and on the basis of the detected load size or sizes and controlled on the basis of or the detected quality characteristics of the weft thread, the speed of the drive 16.
- the speed of the drive 16 is detected and used to control the same.
- the load variable respectively recorded several times during a weft insertion or the load sizes of the weft thread 2 each detected several times, for example, substantially continuously, for example every 10 ms, 2 ms or 0.5 ms or continuously, for example, with the cycle time of the control unit 20, 21 used .
- weft thread specifications and / or weft yarn data measured in the laboratory can be stored and occasionally used to control the rotational speed of the drive 16.
- a probability p SFB of a weft breakage is calculated on the basis of the detected load size or sizes and on the basis of the detected quality characteristics of the weft yarn 2, wherein the rotational speed of the drive 16 is increased if the calculated probability p SFB of a weft yarn break below a predetermined probability p SOLL is, and wherein the speed of the drive is reduced when the calculated probability p SFB a weft break above the predetermined probability p SOLL .
- Models for calculating the probability p SFB of a weft break can be found in the specialist literature, for example, the publication of Hanskarl Hahn "Advance calculation of the weft break probability", Melliand Textilberichte Heft No. 8, 1991, pages 612-615 , The mentioned publication contains models for projectile weft insertion, grab weft insertion and nozzle weft insertion, by means of which the probability p SFB of a weft breakage for thin spots, thick places and knots can be calculated.
- the quality features of the weft thread 2 detected by the first sensor 11.1 comprise one or more of the following features: thick spots, thin spots, knots, inclusions, impurities, foreign fibers, changes in the diameter, changes in the color or changes in the texture ,
- the detected load variables comprise one or more of the following variables: the distance covered as a function of time, the speed as a function of time, the acceleration, the tensile force, the tensile stress or the elongation.
- the detected load variable or variables of one or more weft entries can be used to control the rotational speed.
- the speed of the drive 16 is adapted for the entry of this weak point or section, ie occasionally reduced or, if a more vulnerable weak spot follows a weak point of weakness, at least only slightly increased.
- a weft store 12 is provided to ensure an adequate reaction time until the entry of the weft section in which a deviation has been detected.
- the invention comprises a loom 1 equipped for carrying out a method according to one of the embodiments and variants described above and / or with a device according to one of the embodiments and variants described above.
- the above The method described and the apparatus described above are suitable for all types of looms, such as air jet looms, rapier looms and projectile looms.
- the above described method and apparatus for controlling a weaving machine as well as the weaving machine equipped for carrying out such a method or with such a device allow controlling the speed such that the number of weft breaks is constant compared to a weaving machine can be reduced, and the number of required interventions of the operator compared with the above-described prior art can be reduced to a predetermined value, which can be determined for example on the basis of the load of the operator.
- a predetermined value which can be determined for example on the basis of the load of the operator.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09166166A EP2157218A1 (fr) | 2008-08-18 | 2009-07-23 | Procédé et dispositif de commande d'un métier à tisser |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08162525 | 2008-08-18 | ||
EP09166166A EP2157218A1 (fr) | 2008-08-18 | 2009-07-23 | Procédé et dispositif de commande d'un métier à tisser |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2157218A1 true EP2157218A1 (fr) | 2010-02-24 |
Family
ID=39831871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP09166166A Withdrawn EP2157218A1 (fr) | 2008-08-18 | 2009-07-23 | Procédé et dispositif de commande d'un métier à tisser |
Country Status (2)
Country | Link |
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EP (1) | EP2157218A1 (fr) |
CN (1) | CN101676459A (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012068698A2 (fr) | 2010-11-25 | 2012-05-31 | Uster Technologies Ag | Procédé et appareil de commande d'un métier à tisser à jet |
WO2012068697A2 (fr) | 2010-11-25 | 2012-05-31 | Uster Technologies Ag | Procédé et appareil de commande d'un métier à tisser à jet |
WO2013010278A1 (fr) | 2011-07-15 | 2013-01-24 | Uster Technologies Ag | Métier à tisser à détecteur de fil dédié, et procédé de mise en œuvre correspondant |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102383245B (zh) * | 2011-11-25 | 2013-06-05 | 江苏万工科技集团有限公司 | 一种纬纱伸长动态测量系统 |
CN103015013A (zh) * | 2012-11-22 | 2013-04-03 | 广东溢达纺织有限公司 | 织机投纱故障自动处理系统及方法 |
CN103485017B (zh) * | 2013-07-30 | 2014-09-17 | 东嘉麻棉(常州)有限公司 | 剑杆织机选色系统 |
WO2017079851A1 (fr) * | 2015-11-09 | 2017-05-18 | Uster Technologies Ag | Agencement pour alimenter un fil de trame |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1249610A (en) | 1969-03-12 | 1971-10-13 | Glanzstoff Ag | A method of measuring filament of yarn speeds |
EP0371483A2 (fr) | 1988-11-30 | 1990-06-06 | Tsudakoma Corporation | Procédé pour contrôler la vitesse de travail d'un métier à tisser |
US5332007A (en) * | 1992-03-25 | 1994-07-26 | Lindauer Dornier Gmbh | Faulty weft control on air nozzle looms |
DE4408312A1 (de) | 1994-03-11 | 1995-09-14 | Frei Gmbh & Co Geb | Berührungsloser, elektrostatischer Aufnehmer für sich bewegende, längliche und elektrisch nichtleitende Objekte |
US20040221912A1 (en) * | 2003-03-24 | 2004-11-11 | Sultex Ag | Method for weaving low flaw cloths by means of the elimination of weft thread sections which have irregularities |
WO2006133833A1 (fr) * | 2005-06-15 | 2006-12-21 | Picanol N.V. | Procede d'introduction de fils de trame |
EP1775359A2 (fr) * | 2005-10-17 | 2007-04-18 | Tsudakoma Kogyo Kabushiki Kaisha | Procédé de détection de défauts dans le paquet d'approvisionnement de fil de trame dans un métier à tisser à jet de fluide |
EP1878819A2 (fr) | 2006-07-11 | 2008-01-16 | Tsudakoma Kogyo Kabushiki Kaisha | Appareil d'insertion de trame dans un métier à tisser à jet de liquide |
US20080185066A1 (en) * | 2007-02-02 | 2008-08-07 | Sultex Ag | Method and apparatus for the insertion of a weft thread in a weaving machine |
-
2009
- 2009-07-23 EP EP09166166A patent/EP2157218A1/fr not_active Withdrawn
- 2009-08-17 CN CN200910167034A patent/CN101676459A/zh active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1249610A (en) | 1969-03-12 | 1971-10-13 | Glanzstoff Ag | A method of measuring filament of yarn speeds |
EP0371483A2 (fr) | 1988-11-30 | 1990-06-06 | Tsudakoma Corporation | Procédé pour contrôler la vitesse de travail d'un métier à tisser |
US5332007A (en) * | 1992-03-25 | 1994-07-26 | Lindauer Dornier Gmbh | Faulty weft control on air nozzle looms |
DE4408312A1 (de) | 1994-03-11 | 1995-09-14 | Frei Gmbh & Co Geb | Berührungsloser, elektrostatischer Aufnehmer für sich bewegende, längliche und elektrisch nichtleitende Objekte |
US20040221912A1 (en) * | 2003-03-24 | 2004-11-11 | Sultex Ag | Method for weaving low flaw cloths by means of the elimination of weft thread sections which have irregularities |
WO2006133833A1 (fr) * | 2005-06-15 | 2006-12-21 | Picanol N.V. | Procede d'introduction de fils de trame |
EP1775359A2 (fr) * | 2005-10-17 | 2007-04-18 | Tsudakoma Kogyo Kabushiki Kaisha | Procédé de détection de défauts dans le paquet d'approvisionnement de fil de trame dans un métier à tisser à jet de fluide |
EP1878819A2 (fr) | 2006-07-11 | 2008-01-16 | Tsudakoma Kogyo Kabushiki Kaisha | Appareil d'insertion de trame dans un métier à tisser à jet de liquide |
US20080185066A1 (en) * | 2007-02-02 | 2008-08-07 | Sultex Ag | Method and apparatus for the insertion of a weft thread in a weaving machine |
Non-Patent Citations (1)
Title |
---|
HANSKARL HAHN: "Melliand Textilberichte Heft", 1991, article "Vorausberechnung der Schussfadenbruch-Wahrscheinlichkeit", pages: 612 - 615 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012068698A2 (fr) | 2010-11-25 | 2012-05-31 | Uster Technologies Ag | Procédé et appareil de commande d'un métier à tisser à jet |
WO2012068697A2 (fr) | 2010-11-25 | 2012-05-31 | Uster Technologies Ag | Procédé et appareil de commande d'un métier à tisser à jet |
WO2013010278A1 (fr) | 2011-07-15 | 2013-01-24 | Uster Technologies Ag | Métier à tisser à détecteur de fil dédié, et procédé de mise en œuvre correspondant |
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CN101676459A (zh) | 2010-03-24 |
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