EP0708189A1 - Procédé pour régler la force de traction d'un fil et métier à tisser pour la mise en oeuvre du procédé - Google Patents

Procédé pour régler la force de traction d'un fil et métier à tisser pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0708189A1
EP0708189A1 EP94810604A EP94810604A EP0708189A1 EP 0708189 A1 EP0708189 A1 EP 0708189A1 EP 94810604 A EP94810604 A EP 94810604A EP 94810604 A EP94810604 A EP 94810604A EP 0708189 A1 EP0708189 A1 EP 0708189A1
Authority
EP
European Patent Office
Prior art keywords
control
thread
control curve
thread tension
curve
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
Application number
EP94810604A
Other languages
German (de)
English (en)
Other versions
EP0708189B1 (fr
Inventor
Frank Dr. Lehnert
Godert Dr. De Jager
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.)
Itema Switzerland Ltd
Original Assignee
Sultex AG
Maschinenfabrik Rueti AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sultex AG, Maschinenfabrik Rueti AG filed Critical Sultex AG
Priority to EP94810604A priority Critical patent/EP0708189B1/fr
Priority to DE59409619T priority patent/DE59409619D1/de
Priority to JP7254173A priority patent/JPH08269845A/ja
Priority to US08/537,558 priority patent/US5669421A/en
Publication of EP0708189A1 publication Critical patent/EP0708189A1/fr
Application granted granted Critical
Publication of EP0708189B1 publication Critical patent/EP0708189B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/18—Devices for indicating warp tension
    • 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

Definitions

  • the invention relates to a method for regulating the thread tension, in particular for weft or warp threads in a weaving machine and weaving machine for carrying out the method.
  • the warp threads are exposed to changing stresses during the shedding and the wefting, as well as the weft threads during the entry.
  • control curve can only be changed to a limited extent when the weaving machine is running, the thread tension being changed manually on the basis of empirical values and the brake setting being carried out manually on the basis of the previously defined braking parameters and yarn properties.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims solves the problem of creating a method for regulating the thread tension and a weaving machine for carrying out the method, in which the adaptation to the optimal thread tension curve takes place automatically on the basis of specifications and depending on the weaving process and that Regulation of the thread tension for warp threads and / or weft threads is suitable.
  • the thread tension per weft insertion is measured for each rotation angle and for a certain number of weft entries, e.g. 50 determines an average value of the thread tension for each rotation angle, which are shown as actual thread tension data in a curve a.
  • This actual thread tension value data is then compared with at least one nominal value of the thread tension.
  • a first approximate control curve b is calculated from this comparison. This first control curve results in a new actual value curve for the thread tension (curve c).
  • a further control curve with a reduced nominal / actual value deviation compared to the first control curve is calculated. After a selectable number of weft entries, the control curve is introduced into the control.
  • the target / actual value deviation can be reduced to a minimum.
  • a systematic variation of the amplitude and / or the phase with respect to the angle of rotation is provided in order to optimize the control curve.
  • the optimization takes place by keeping the amplitude of the control curve constant and the phase, ie position of the control curve with regard to the angle of rotation of the main shaft is varied systematically, for example between +/- 10 °, in order to determine the time deviation of the control signal.
  • the amplitude and phase are then alternately varied. The setting with the smallest deviation is saved
  • a control structure which is shown in FIG. 2, is used to carry out the control described above.
  • This control structure comprises a control device 1, which is part of the weaving machine control, an actuating element 2, which is provided on the weaving machine, a controlled system, i.e. the thread course, a device 3 for measuring the thread tension, a device 4 for entering parameters and a device 5 for determining the control curve.
  • the regulation and control structure described above form a basic version with which the thread tension for weft threads and / or warp threads can be regulated and which can be used in e.g. Rapier and projectile weaving machines can be used.
  • the weft thread course comprises a braking phase (window 1) while the thread is being braked and a return phase (window 2) while the inserted weft thread is pulled back by the thread tensioner.
  • the thread tension curve is optimized in accordance with the basic configuration of the control described above, whereby a setpoint curve for a weft insertion, ie 360 values, is specified and wherein in addition, the thread break analysis with the criteria thread break due to excessive thread tension and weft insertion errors due to insufficient thread tension are included. When these criteria occur, the nominal value of the thread tension is redetermined.
  • the thread break analysis is advantageously carried out in the braking or return phase.
  • the course of the thread tension of a weft thread is changed on the one hand by the braking force and the braking time and on the other hand by the properties of the yarn.
  • the maximum thread tension (curve d) during the braking phase (window 1) can be brought below a target value S1.
  • the thread tension curve decreases during the return phase (window 2).
  • the control reacts to this by increasing the braking force, as a result of which the setpoint S2 is exceeded, i.e. is observed.
  • the second control curve (curve f) is calculated on the basis of these measures, so that a new actual value curve (curve g) results.
  • This control structure comprises a control device 11, which is part of the machine control (not shown), a magnetically actuable thread brake 12, the controlled system, ie the weft thread course during weft insertion, a pressure meter 13, the pressure measurement values of which are proportional to the thread tension, a device 14 for determining the control curve and one Device 15 for specifying the thread tension.
  • a conventional logic or fuzzy logic can be provided for the control.
  • the categories high, medium, good which relate to an average thread tension
  • the categories high, good, low which are based on the absolute values the thread tension are related.
  • Window 1 Braking force Braking time high high less later high Well - later high deep higher later medium high less - medium Well - later medium deep higher - Well high less earlier Well Well - - Well deep higher earlier
  • FIG. 7 shows one typical warp thread tension curve
  • FIG. 8 (analogous to FIG. 4) the corresponding first control curve.
  • the course of the thread tension of the warp threads is determined on the one hand by the warp let-off device, the match tree and the goods take-off device and, as shown in FIG. 7, on the other hand influenced by the stop of the reed (window 1) and the opening of the shed (window 2), so that the warp run is subject to an alternating load .
  • the mean value of the thread tension across the entire width of the chain or at least part of the chain is used as the actual value curve and a thread tension curve over two weft entries, i.e. 720 values applied as setpoint curve.
  • the thread tension curve is optimized according to the basic version.
  • the warp thread break analysis is also included to optimize the thread tension curve.
  • the warp thread break analysis includes the thread break due to excessive thread tension and the severing of the warp threads by the projectile that is shot in or the looper due to excessively low thread tension.
  • the thread tension is too high, after the occurrence of a number (e.g. 10) of typical thread breaks, the nominal value of the thread tension is reduced and the control curve is redetermined.
  • warp threads The cutting of the warp threads occurs due to the tendency of the warp threads to cling, i.e. threads unwound from the warp beam hang together. As a result, warp threads hang into the latter when the shed is open and are severed by the entry element.
  • the staple inclination is determined statistically on the basis of the thread breaks occurring, for example within 100,000 weft entries, and is eliminated by increasing the setpoint value of the thread tension curve.
  • This control structure comprises a control device 21, which is part of the machine control (not shown), an actively controllable match tree 22, the controlled system, i.e. the course of the warp thread from the warp beam to the edge of the goods, a pressure meter 23, the pressure measured values of which are proportional to the thread tension, a device 24 for determining the control curve and a device 25 for specifying or automatically setting the desired values of the thread tension.
  • a conventional logic or fuzzy logic can be provided for the control.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP94810604A 1994-10-17 1994-10-17 Procédé pour régler la force de traction d'un fil Expired - Lifetime EP0708189B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP94810604A EP0708189B1 (fr) 1994-10-17 1994-10-17 Procédé pour régler la force de traction d'un fil
DE59409619T DE59409619D1 (de) 1994-10-17 1994-10-17 Verfahren zur Regelung der Fadenzugkraft
JP7254173A JPH08269845A (ja) 1994-10-17 1995-09-29 糸張力の調節方法及び同方法を実施するための織機
US08/537,558 US5669421A (en) 1994-10-17 1995-10-02 Method of controlling the yarn tension in a weaving machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94810604A EP0708189B1 (fr) 1994-10-17 1994-10-17 Procédé pour régler la force de traction d'un fil

Publications (2)

Publication Number Publication Date
EP0708189A1 true EP0708189A1 (fr) 1996-04-24
EP0708189B1 EP0708189B1 (fr) 2000-12-27

Family

ID=8218328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810604A Expired - Lifetime EP0708189B1 (fr) 1994-10-17 1994-10-17 Procédé pour régler la force de traction d'un fil

Country Status (4)

Country Link
US (1) US5669421A (fr)
EP (1) EP0708189B1 (fr)
JP (1) JPH08269845A (fr)
DE (1) DE59409619D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1012326A3 (fr) * 1998-03-10 2000-09-05 Tsudakoma Ind Co Ltd Appareil de commande floue pour un metier a tisser a injection.
WO2005033391A1 (fr) * 2003-09-19 2005-04-14 Iro Ab Procede de commande adaptative d'un frein de fil de trame a actionnement electrique
CN108897293A (zh) * 2018-07-19 2018-11-27 广东溢达纺织有限公司 织机控制方法、系统、计算机设备和存储介质

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258551B1 (fr) * 2001-05-09 2003-01-15 Berger Lahr Positec GmbH & Co. KG Procédé d'utilisation d'un métier à tisser
ITTO20010737A1 (it) * 2001-07-25 2003-01-25 Lgl Electronics Spa Metodo e sistema perfezionati di controllo dei dispositivi frenatramaelettrocomandati per la regolazione automatica della tensione meccanic
EP1473390A3 (fr) * 2003-04-29 2005-04-06 Sultex AG Contrôle du transport de fil
US7039489B2 (en) * 2004-03-12 2006-05-02 Sultex Ag Monitoring of thread transport
EP1584719A1 (fr) * 2004-03-12 2005-10-12 Sultex AG Contrôle du transport de fil
EP1953282B1 (fr) * 2007-02-02 2010-12-22 ITEMA (Switzerland) Ltd. Procédé et dispositif destinés à l'introduction d'un fil de trame pour une machine à tisser
DE102010026609B3 (de) * 2010-07-09 2011-11-17 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren und Vorrichtung zur Webmusterbildung bei Geweben mit Zusatzschusseffekten
DE102010034969B3 (de) 2010-08-20 2011-11-03 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Webblatt und Webmaschine zur Webmusterbildung bei Geweben mit Zusatzmustereffekten
CN113296389B (zh) * 2021-05-20 2022-12-30 河北工业大学 一种基于μC/OS-Ⅲ的剑杆织机软件系统
CN114447866B (zh) * 2022-03-09 2024-03-01 中英海底系统有限公司 布缆机轮组间的压力控制方法及其系统
FR3147299A1 (fr) * 2023-03-31 2024-10-04 Safran Procédé de tissage automatisé avec ouverture de foule optimisé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568595A1 (fr) * 1984-08-02 1986-02-07 Alsacienne Constr Mat Tex Dispositif de commande positive pour frein de fil.
DE4008864A1 (de) * 1990-03-20 1991-09-26 Dornier Gmbh Lindauer Verfahren zur steuerung des schusseintrages in luftwebmaschinen und vorrichtung zur beeinflussung des schussfadens
DE4323748C1 (de) * 1993-07-15 1994-07-14 Dornier Gmbh Lindauer Schußfaden-Bremseinrichtung für Webmaschinen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2820704B2 (ja) * 1989-02-08 1998-11-05 津田駒工業株式会社 織機の回転数のファジィ制御方法および装置
JP2779208B2 (ja) * 1989-06-12 1998-07-23 津田駒工業株式会社 織機回転数の制御方法および装置
US5295515A (en) * 1991-02-25 1994-03-22 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Apparatus for controlling weft insertion in jet loom
JP2898773B2 (ja) * 1991-03-08 1999-06-02 津田駒工業株式会社 ジェットルームの緯入れ制御装置
JP3606330B2 (ja) * 1991-07-09 2005-01-05 津田駒工業株式会社 ジェットルームの緯入れ制御方法および装置
JPH0525752A (ja) * 1991-07-16 1993-02-02 Tsudakoma Corp 織布工場の利益向上制御方法
JP3075811B2 (ja) * 1991-11-12 2000-08-14 津田駒工業株式会社 ジェットルームの緯入れ制御装置
US5476122A (en) * 1993-03-05 1995-12-19 Lindauer Dornier Gesellschaft Mbh Weft thread brake responsive to yarn characteristics in a loom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2568595A1 (fr) * 1984-08-02 1986-02-07 Alsacienne Constr Mat Tex Dispositif de commande positive pour frein de fil.
DE4008864A1 (de) * 1990-03-20 1991-09-26 Dornier Gmbh Lindauer Verfahren zur steuerung des schusseintrages in luftwebmaschinen und vorrichtung zur beeinflussung des schussfadens
DE4323748C1 (de) * 1993-07-15 1994-07-14 Dornier Gmbh Lindauer Schußfaden-Bremseinrichtung für Webmaschinen
EP0634509A1 (fr) * 1993-07-15 1995-01-18 Lindauer Dornier Gesellschaft M.B.H Dispositif de freinage du fil de trame pour métier à tisser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
B.WULFSHORST, F.LEHNERT: "Reduzierung der Schussfadenbelastung mit Hilfe einer neu entwickelten geregelten Schussfadenbremse", TEXTIL PRAXIS INTERNATIONAL, SONDERDRUCK, no. 12, 1991, pages 1292 - 1298

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1012326A3 (fr) * 1998-03-10 2000-09-05 Tsudakoma Ind Co Ltd Appareil de commande floue pour un metier a tisser a injection.
US6314335B1 (en) 1998-03-10 2001-11-06 Tsudakoma Kogyo Kabushiki Kaisha Fuzzy control apparatus for jet loom
WO2005033391A1 (fr) * 2003-09-19 2005-04-14 Iro Ab Procede de commande adaptative d'un frein de fil de trame a actionnement electrique
CN108897293A (zh) * 2018-07-19 2018-11-27 广东溢达纺织有限公司 织机控制方法、系统、计算机设备和存储介质

Also Published As

Publication number Publication date
DE59409619D1 (de) 2001-02-01
US5669421A (en) 1997-09-23
EP0708189B1 (fr) 2000-12-27
JPH08269845A (ja) 1996-10-15

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