EP1160365A1 - Verfahren und Vorrichtung zur Fehlererkennung im Fach einer Jacquardmaschine - Google Patents

Verfahren und Vorrichtung zur Fehlererkennung im Fach einer Jacquardmaschine Download PDF

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Publication number
EP1160365A1
EP1160365A1 EP01420109A EP01420109A EP1160365A1 EP 1160365 A1 EP1160365 A1 EP 1160365A1 EP 01420109 A EP01420109 A EP 01420109A EP 01420109 A EP01420109 A EP 01420109A EP 1160365 A1 EP1160365 A1 EP 1160365A1
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EP
European Patent Office
Prior art keywords
effort
actuator
force
values
representative
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Granted
Application number
EP01420109A
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English (en)
French (fr)
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EP1160365B1 (de
Inventor
Dominique Braun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staubli Faverges SCA
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Staubli Faverges SCA
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Publication of EP1160365A1 publication Critical patent/EP1160365A1/de
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Anticipated expiration legal-status Critical
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards
    • D03C3/205—Independently actuated lifting cords
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/20—Warp stop motions
    • D03D51/28—Warp stop motions electrical
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/44—Automatic stop motions acting on defective operation of loom mechanisms
    • D03D51/46—Automatic stop motions acting on defective operation of loom mechanisms of shedding mechanisms

Definitions

  • the invention relates to a method and a device for detection of an anomaly in the formation of the crowd on a Jacquard type loom.
  • the invention also relates to a loom equipped with such a device.
  • chain breaker which includes metal strips supported by each of trade chain wires and bus bars extending across the width of the loom.
  • the strip it supports comes under the effect of its dead weight, in contact with busbars, which creates an electrical contact between these conductive bars which are power ups.
  • This contact can be detected by a electrical control system, which allows interrupting immediately the operation of the trade and attract the attention of an operator, for example through a witness luminous.
  • a chain-breaking device has important limitations. First, once the job stopped, the operator must find out which chain thread is actually broken, which requires moving manually the slats to identify the one that creates the contact.
  • the material used for making the chain breaker has a significant cost, since it must include a lamella for each chain wire, i.e. for example up to more than 10,000 coverslips, and busbars to be incorporated into the structure of the loom and supplied with voltage.
  • the chain breakers known are sensitive to pollution due to fluff which is most often generated during weaving operations. It is therefore necessary to plan periodic operations of cleaning of this device.
  • the process of the invention takes advantage of the fact that it is possible to determine the forces exerted by an actuator electric without using mechanical devices appendices while the comparison storage operations and logical processing can be performed in a electronic controller also used for control actuators.
  • the method of the invention makes it possible to dispense with the retraction operation of the chain breaker blades, which saves significant time and consequent reduction in the operating costs of the business.
  • the method allows rapid identification and specifies the position of a chain wire at which the crowd does not conform to the desired armor, either at because of a break in this wire, because of a malfunction elastic return means or because of a defect in the kinematic connection between the actuator and the boom, because the actuator for which a fault signal is generated is immediately spotted.
  • the method of the invention therefore allows rapid detection an abnormality of the crowd, its treatment, in particular by stop of the trade, and the location of this anomaly, in particular by identifying the actuator concerned. According to variants of the process used, it even allows identification the type of anomaly encountered.
  • the reference effort can be the normal effort identified above but also the "empty" and "unloaded” efforts for which the means of determination used are identical.
  • the device includes means for viewing the reference and / or the position of the beam (s) driven by an actuator for which the logical unit has detected an abnormal value.
  • These means may include a display that the operator consult in order to know on which part of the trade he must intervene.
  • the invention finally relates to a loom of the type Jacquard fitted with a device as previously described.
  • a trade is more economical than trades equipped with classic chain breakers so it's easier to use for an operator and that it does not require operations tedious re-entry.
  • such a trade allows consider automated repairs in the event of an anomaly observed because the device and the method of the invention allow precise identification of the cause of a anomaly and its physical location on the loom.
  • the weaving loom shown diagrammatically in FIG. 1 comprises warp threads 1 each passing through an eyelet 2 of a heddle 3 driven by a vertical oscillating movement, represented by the arrow F 1 , generally perpendicular to the direction of the movements weft threads represented by arrow F 2 .
  • Each stringer 3 is connected by an arch 4 to a pulley 5 driven in rotation by an electric servomotor 6.
  • each stringer 3 is connected to a spring 8 secured to the frame 9 of the loom.
  • each motor is controlled in position by a control unit 10 which receives a position reference signal S 0 .
  • a detector 11 installed at the rear of each motor 6 makes it possible to produce a position control for precise control of the motor 6 by means of a signal S 1 which it addresses to the unit 10 by an electrical connection 13.
  • the unit 10 compares the signals S 0 and S 1 and calculates the current necessary to compensate for the difference between these signals. This current is used to control the motor 6 according to the principle of servo-control in the closed-loop position.
  • the motors 6 are of the brushless type, so that the torque exerted by each motor 6 is proportional to the current that it consumes at all times.
  • unit 10 supplies each motor 6 with the current necessary for its displacement, so it is possible to know by unit 10 the value of this current, i.e. the value of the force exerted by each motor 6.
  • This torque, known from unit 10 is proportional to the force F exerted by the pulley 5 on the yoke 4, this force F being substantially equal to the reaction force F 'exerted by the yoke 4 considered on the pulley 5.
  • each spring 8 has an essentially linear characteristic in its normal operating zone, this can be represented by the straight line D in FIG. 2 in a representation of the force F 8 exerted by a spring 8 as a function of the position x of an eyelet 2 between two extreme positions x 1 and x 2 corresponding to the limits of its normal travel.
  • the force E exerted by the motor 6 to overcome the elastic return force of each spring 8 between the positions x 1 and x 2 , is represented by a portion of the line D defined between the extreme positions x 1 and x 2 .
  • This effort E is substantially linear between two extreme values E 1 and E 2 .
  • the value of the force E corresponds to the value that must be exerted by a motor 6 to move a beam 3 when empty, that is to say a beam in which no chain wire is engaged.
  • each motor 6 is activated to move the heald 3 that it drives between the extreme positions of its normal travel, this being done by removing the tension on the warp threads or by proceeding before the threads chain 1 are not introduced into the eyelets 2.
  • the value of the force E exerted by this motor is determined.
  • the values E 1 and E 2 are determined which are then memorized during a subsequent step 102, the values of E 1 and E 2 being transmitted to a memory 20 associated with the unit 10.
  • the wires are then given 1 chain introduced into the eyelets 2 a tension representative of that they have during weaving.
  • a range of normal force values is determined, for example around these values, at more or less 5%, this range then being limited by values of E " 1 - 5% and E '' 1 + 5% or E '' 2 - 5% and E '' 2 + 5% In this sense, the values E '' 1 and E '' 2 are representative threshold values limits of the normal operating range.
  • an anomaly signal S 2 is generated and the loom is stopped by the unit 10 which displays a corresponding message on the screen 21.
  • This message identifies the motor 6 for which abnormal operation has been detected and , by the same token, allows an operator to know on which part of the trade should focus his checks.
  • the message displayed on the screen 21 makes it possible to know which chain wire 1 is involved since the unit 10 has in memory the references of each chain wire associated with each engine.
  • the servomotor 6 for which a abnormal situation has been detected is controlled by unit 10, during a step 109, so as to bring the heald 3 into position offset up or down relative to the healds neighbors.
  • the arm 3 can be moved towards its top dead center position while other actuators are piloted to bring all the other beams into low neutral position, which allows to form with chain yarn a lower layer from which normally protrudes the chain wire at which a problem has been detected.
  • K 1 or K 2 of K is compared in a subsequent step 111 with the values of E ' 1 and E' 2 previously stored. If K 1 or K 2 is substantially equal to E ′ 1 or E ′ 2 , it can be deduced therefrom that the heddle 3 does not undergo any effort from the associated spring 8, this spring possibly being considered a priori as defective or disconnected from the corresponding beam 3 or from the frame 9.
  • a signal S 4 is then generated, said to be "failure of return means" and the unit 10 displays a corresponding message on the screen 21.
  • step 112 an additional verification is carried out during step 112 where the value K 1 or K 2 of the force determined during step 107 is compared with 0. If this value is substantially equal to 0 , it can be deduced therefrom that the motor 6 in question exerts no force on the yoke 4 with which it is normally associated, which makes it possible to deduce that the connection between the motor 6 and the arm 3 is interrupted, for example at level of the pulley 5.
  • a signal S 5 called "link breakage" is then generated by the unit 10 which displays the corresponding message on the screen 21.
  • the unit 10 Otherwise, the cause of the anomaly is not automatically detected and the unit 10 generates a message S 6 displayed on the screen 21 by which the operator is informed of this fact.
  • a correction coefficient can be applied during step 108 of comparison of the representative values K 1 and K 2 of the force in operation K with respect to the representative values E " 1 and E” 2 of the normal force insofar as the differences between these values can depend on the type of armor and / or the type of wire used.
  • the threshold value for which the values of K 1 or K 2 and E '' 1 or E '' 2 are considered to be different may be set at 20% in the case of weaving a cotton canvas and 5% in the case of weaving a silk article. In this sense, the signal S 2 is only generated if the compared values differ significantly.
  • the threshold values used depend on the type of armor and / or wire used.
  • a similar approach can be adapted for the steps 110, 111 and 112 where the comparison is also made with a correction coefficient so that only the significant differences between the values compared.
  • the process of the invention makes it possible to dispense with a chain breaker with lamellae and busbars and dispense of the retraction operation, while rapid identification and specifies the warp for which an anomaly has been detected is possible.
  • Steps 101, 102, 105 to 106 'and 109 to 112 of the process are optional and can be implemented independently each other, except that steps 110 and 111 respectively require the implementation of steps 101 and 102 or 105 to 106 '.
  • the invention has been presented with actuators electrics constituted by brushless type rotary motors. It is however applicable to any other type electric actuators whose effort they generate can be determined and, in particular, with linear motors, to which the determined efforts are not couples but traction forces, and asynchronous motors.
  • the effort is determined by measuring electrical parameters, real or setpoint, of each actuator.
  • the invention has been shown with motors 6 connected to a single arch itself connected to a single stringer. he it is understood that it would also find application with motors controlling several beams by means of several arches grouped at the lower end of a cord common.
  • the method of the invention may include a dynamic learning step allowing to take into account of the actual configuration of the profession, in particular as regards concerns the length of the arcades, the geometry of the crowd or the mechanical characteristics of the wires and springs. This allows to obtain values of dynamic forces making the object of an adapted arithmetic treatment, after this dynamic learning.
  • the invention makes it possible to envisage an automated repair of the crowd by means of an automaton such as a multi-robot. axes.
  • provision may be made to take normal real values of the weaving force in different configurations of use and to create an "envelope" curve of these values, the aforementioned threshold values then corresponding, at each point, to the values of these envelope curves to which is added or subtracted a correction coefficient.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Supply And Installment Of Electrical Components (AREA)
  • Numerical Control (AREA)
  • Sewing Machines And Sewing (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
EP01420109A 2000-05-15 2001-05-14 Verfahren und Vorrichtung zur Fehlererkennung im Fach einer Jacquardmaschine Expired - Lifetime EP1160365B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0006164A FR2808812B1 (fr) 2000-05-15 2000-05-15 Procede et dispositif de detection d'anomalie dans la foule d'un metier jacquard
FR0006164 2000-05-15

Publications (2)

Publication Number Publication Date
EP1160365A1 true EP1160365A1 (de) 2001-12-05
EP1160365B1 EP1160365B1 (de) 2004-10-20

Family

ID=8850229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01420109A Expired - Lifetime EP1160365B1 (de) 2000-05-15 2001-05-14 Verfahren und Vorrichtung zur Fehlererkennung im Fach einer Jacquardmaschine

Country Status (8)

Country Link
US (1) US6357486B2 (de)
EP (1) EP1160365B1 (de)
JP (1) JP4878696B2 (de)
CN (1) CN1219923C (de)
AT (1) ATE280254T1 (de)
DE (1) DE60106518T2 (de)
ES (1) ES2230253T3 (de)
FR (1) FR2808812B1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20040086A1 (it) * 2004-01-22 2004-04-22 Fimtextile Spa Sistema elettronico di controllo del disegno di tessuti in telai di tessitura a ratiera
FR2865741B1 (fr) * 2004-01-29 2006-03-17 Staubli Sa Ets Dispositif de formation de la foule, metier a tisser equipe d'un tel dispositif et procede mis en oeuvre avec un tel dispositif
BE1016669A3 (nl) * 2005-07-05 2007-04-03 Wiele Michel Van De Nv Inrichting voor het aandrijven van een weefraam in een weefmachine, en een weefmachine voorzien van een of meerdere dergelijke inrichtingen.
BE1016943A6 (nl) * 2006-01-13 2007-10-02 Wiele Michel Van De Nv Werkwijze voor het vermijden van mengcontouren in poolweefsels.
FR2902444B1 (fr) * 2006-06-16 2008-08-29 Staubli Faverges Sca Dispositif de formation de la foule de type jacquard, metier a tisser equipe d'un tel dispositif et procede de formation de la foule sur un tel metier
FR2914321B1 (fr) * 2007-03-30 2009-05-08 Staubli Faverges Sca Metier a tisser et procede de tissage de velours epingle simple nappe
IT1391730B1 (it) * 2008-11-26 2012-01-27 Santoni & C Spa Dispositivo di connessione per attuatori piezoelettrici di barre jacquard di macchine tessili
IT1391728B1 (it) * 2008-11-26 2012-01-27 Santoni & C Spa Attuatore piezoelettrico per barre guidafilo jacquard di macchine tessili
IT1391729B1 (it) * 2008-11-26 2012-01-27 Santoni & C Spa Barra guidafilo jacquard per macchine tessili per maglieria in catena
JP5217992B2 (ja) * 2008-12-10 2013-06-19 株式会社豊田自動織機 織機における経糸切断検出装置
DE102011080629A1 (de) * 2011-08-08 2013-02-14 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren und Webmaschine mit einer Vorrichtung zum Überwachen einer Fadenüberspannung
CN103060988A (zh) * 2012-12-14 2013-04-24 常熟市常新纺织器材有限公司 停经架的断经显示控制装置
CN103233314B (zh) * 2013-04-28 2014-06-25 浙江理工大学 一种多臂机的控制与检测装置
FR3041662B1 (fr) * 2015-09-29 2018-05-11 Staubli Lyon Systeme de controle d'une mecanique jacquard, mecanique jacquard et metier a tisser equipes d'un tel systeme
EP3458633B1 (de) * 2016-05-16 2022-12-28 Georgia Tech Research Corporation Systeme und verfahren zur kontinuierlichen herstellung von gewebten verbundmaterialien
CN106702565B (zh) * 2016-12-09 2017-12-19 江苏宋和宋智能科技有限公司 一种纺机用电子综丝提花装置
CN106987960B (zh) * 2017-03-09 2018-05-25 董佶悦 一种电子提花机负载分析方法
CN107083601B (zh) * 2017-03-09 2018-05-25 董佶悦 一种电子提花机机械运行状态检测及分析方法
CN209555469U (zh) * 2017-04-28 2019-10-29 爱世伴公司 织机以及织机的综片***和致动器***
CN108754794B (zh) * 2018-07-03 2023-10-24 吴江万工机电设备有限公司 一种纺织机械用转筒及其应用
JP2020196972A (ja) * 2019-06-03 2020-12-10 株式会社豊田自動織機 織機の開口不良検知装置
FR3097565B1 (fr) * 2019-06-19 2022-08-12 Staubli Sa Ets Machine textile, métier à tisser comportant une telle machine textile et procédés associés
BE1027384B1 (nl) * 2019-06-20 2021-01-28 Vandewiele Nv Gaapvormingsinrichting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307025A1 (de) * 1987-09-02 1989-03-15 Picanol N.V. Verfahren zur Überwachung von Kettenfadenbrüchen an Webmaschinen und Vorrichtung zum Ausüben dieses Verfahrens
JPH1150344A (ja) * 1997-08-04 1999-02-23 Toyota Autom Loom Works Ltd 織機の開口装置の開口異常検出方法および装置
FR2772796A1 (fr) * 1997-12-24 1999-06-25 Staubli Sa Ets Procede de montage d'un element funiculaire, dispositif de formation de la foule et metier a tisser

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Publication number Priority date Publication date Assignee Title
GB8817765D0 (en) * 1988-07-26 1988-09-01 Palmer R L Loom control
FR2724948B1 (fr) * 1994-09-27 1996-12-27 Staubli Sa Ets Mecanisme jacquard du type a courroies
FR2772791B1 (fr) * 1997-12-24 2000-01-28 Staubli Sa Ets Actionneur rotatif electrique pour la formation de la foule sur un metier a tisser, mecanique d'armure et metier a tisser
JP3321412B2 (ja) * 1998-05-11 2002-09-03 津田駒工業株式会社 イージング方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307025A1 (de) * 1987-09-02 1989-03-15 Picanol N.V. Verfahren zur Überwachung von Kettenfadenbrüchen an Webmaschinen und Vorrichtung zum Ausüben dieses Verfahrens
JPH1150344A (ja) * 1997-08-04 1999-02-23 Toyota Autom Loom Works Ltd 織機の開口装置の開口異常検出方法および装置
FR2772796A1 (fr) * 1997-12-24 1999-06-25 Staubli Sa Ets Procede de montage d'un element funiculaire, dispositif de formation de la foule et metier a tisser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 05 31 May 1999 (1999-05-31) *

Also Published As

Publication number Publication date
US6357486B2 (en) 2002-03-19
US20010039975A1 (en) 2001-11-15
JP2001355154A (ja) 2001-12-26
EP1160365B1 (de) 2004-10-20
ATE280254T1 (de) 2004-11-15
CN1333394A (zh) 2002-01-30
DE60106518D1 (de) 2004-11-25
FR2808812A1 (fr) 2001-11-16
CN1219923C (zh) 2005-09-21
JP4878696B2 (ja) 2012-02-15
ES2230253T3 (es) 2005-05-01
FR2808812B1 (fr) 2002-07-19
DE60106518T2 (de) 2005-12-01

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