EP0467059A1 - Vorrichtung zur Spannungsregulierung und Rückziehen von Schussgarn in Webmaschinen - Google Patents

Vorrichtung zur Spannungsregulierung und Rückziehen von Schussgarn in Webmaschinen Download PDF

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Publication number
EP0467059A1
EP0467059A1 EP91109117A EP91109117A EP0467059A1 EP 0467059 A1 EP0467059 A1 EP 0467059A1 EP 91109117 A EP91109117 A EP 91109117A EP 91109117 A EP91109117 A EP 91109117A EP 0467059 A1 EP0467059 A1 EP 0467059A1
Authority
EP
European Patent Office
Prior art keywords
yarn
lever
weft yarn
tension
weft
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
EP91109117A
Other languages
English (en)
French (fr)
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EP0467059B1 (de
Inventor
Luigi Pezzoli
Rossano Maffeo
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.)
NUOVA VAMATEX S.P.A.
Original Assignee
NUOVA VAMATEX SpA
Vamatex SpA
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 NUOVA VAMATEX SpA, Vamatex SpA filed Critical NUOVA VAMATEX SpA
Publication of EP0467059A1 publication Critical patent/EP0467059A1/de
Application granted granted Critical
Publication of EP0467059B1 publication Critical patent/EP0467059B1/de
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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • B65H59/24—Surfaces movable automatically to compensate for variation in tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/23—Actuating means angular magnetic, e.g. rotary solenoids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • weft yarns are inserted by suitable transport means into the sequence of warp yarns forming the shed.
  • the weft yarns are then pressed together by a reed during beating up.
  • the known systems for weft insertion into the shed are, in shuttleless looms, the projectile, the gripper, the water and the air system.
  • the weft yarn When insertion takes place, the weft yarn is unwound from reels or drawn from weft feeders, and is inserted into the shed with a motion law varying according to the system adopted. As the yarn end undergoes an acceleration, said yarn is subjected - on account of its mass and of the frictions involved - to an increasing tension, whereas the deceleration of the yarn end reduces weft yarn tension. Said tension could thus even drop to zero, causing quite a lot of weaving problems and spoiling the quality of the fabric.
  • weft yarn braking devices have since long been used in technique, said devices being apt to increase yarn tension by producing a friction thereon as it moves along. For instance, use is made of two braking elements pressed one against the other by elastic means, the weft yarn to be braked sliding between said elements. In this case, to adjust the braking action, the elastic coupling pressure is varied either manually, by an operator, and/or by mechanical or electromagnetic devices.
  • Said devices generally comprise an oscillating lever controlled by kinematic mechanisms, by cams or by springs, having at the end a yarn guide whose axis, in the rest position, is aligned with that of two fixed yarn guides positioned to the sides thereof. The yarn slides in a straight line through said yarn guide.
  • the lever oscillates moving its yarn guide out of alignment from the fixed yarn guides, and hence pulling back the weft yarn on the side where there is less braking resistance, namely from the warp shed, since on the side of the reel or of the weft feeder there acts a braking device.
  • the present invention now proposes a device which is apt to perform both the function of yarn tension regulator and that of yarn recovery, and wherein the lever stroke can be varied while the loom is working, as said device is suitably controlled by an electronic system.
  • Such a device - of the type comprising at least one oscillating lever having a yarn guide at the end which, in the lever rest position, is interposed between two fixed yarn guides - is characterized in that the lever strokes are controlled by a linear electric motor, running under the control of an electronic system associated to the electronic system which controls the loom and to a sensor constantly detecting the position of said lever.
  • the device according to the invention applied between a weft feeder A with brake means F and the warp shed P of a loom, comprises a lever 1 (more levers could however be provided) pivoted on a pin 2 and rotating about said pin under the control of a linear electric motor 3.
  • the lever 1 carries at one end a yarn guide 4 and at the other end a bobbin 5 (more bobbins could however be provided) forming the linear motor 3.
  • Said motor also comprises two permanent magnets 6, supported by a ferromagnetic plate 7, which generate a magnetic field into which is immersed the bobbin 5.
  • the lever 1 oscillates rotating about the pin 2 and its position is constantly detected by sensors 8.
  • An electronic control system detects in fact the position of the lever 1 through the position sensor 8 and - taking into account the signals issued by the microprocessor 10 equipping the loom on which the device of the invention is mounted - suitably feeds the bobbin 5 of the linear electric motor 3.
  • the linear motor 3 is fed by the control system 9 so that the force transmitted to the lever 1 by the bobbin 5 is apt to balance the force imparted by the yarn f on said lever 1 in correspondence of the yarn guide 4, which force tends to shift said lever from the position established by the control system 9 and detected by the position sensor 8.
  • the system 9 thus compares the tension of the yarn f, through the various points of the loom working cycle, with the values or with the allowable interval of values memorized for that type of weft, and it operates - if required - so as to vary the tension of the weft yarn and regulate it (in the sense of reducing it is it exceeds the preset value, or viceversa).
  • the tension increase is obtained by lifting the yarn guide 4 in respect of the two fixed yarn guides 11; when in alignment with said yarn guides, the yarn guide 4 of the lever 1 takes up the rest position of the device. In fact, weft yarn tension T downstream of the device increases on increasing of the yarn winding angles around the yarn guides 11.
  • the device to regulate weft yarn tension can be timed with the device to open the warp shed, by connecting the microprocessor 10 of the loom with the control system 9, so as to increase weft yarn braking at the outlet of the gripper - and make up for the scarce braking thereof by the warp yarns of certain weaves - thereby favouring weft release from the gripper at the outlet of the warp shed and hence reducing yarn wastes.
  • the device according to the invention can be mounted both upstream (a device for each weft yarn) of the weft presenting device, and downstream thereof (only one device).
  • the device according to the invention is mounted upstream of the main nozzle; it increases weft braking in the final part of yarn insertion.
  • the increase in weft braking limits its speed at the end of insertion, thereby reducing weft impact against the stop pin of the measuring weft feeder (and thus the vibrations produced by impact).
  • the system If the system is not apt to keep, when operating, the tension variations within the preset range, it signals the defect to the operator by way of a diagnostic program.
  • the system can also work, independently from weft yarn tension, simply as a programmable yarn recovery device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
  • Paper (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
EP91109117A 1990-06-11 1991-06-04 Vorrichtung zur Spannungsregulierung und Rückziehen von Schussgarn in Webmaschinen Expired - Lifetime EP0467059B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT02059990A IT1248716B (it) 1990-06-11 1990-06-11 Dispositivo per la regolazione della tensione ed il recupero del filo di trama in telai di tessitura
IT2059990 1990-06-11

Publications (2)

Publication Number Publication Date
EP0467059A1 true EP0467059A1 (de) 1992-01-22
EP0467059B1 EP0467059B1 (de) 1995-02-22

Family

ID=11169374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109117A Expired - Lifetime EP0467059B1 (de) 1990-06-11 1991-06-04 Vorrichtung zur Spannungsregulierung und Rückziehen von Schussgarn in Webmaschinen

Country Status (8)

Country Link
EP (1) EP0467059B1 (de)
AT (1) ATE118830T1 (de)
DE (1) DE69107536T2 (de)
DK (1) DK0467059T3 (de)
ES (1) ES2068430T3 (de)
GR (1) GR3015168T3 (de)
HK (1) HK46496A (de)
IT (1) IT1248716B (de)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0634509A1 (de) * 1993-07-15 1995-01-18 Lindauer Dornier Gesellschaft M.B.H Schussfaden-Bremseinrichtung für Webmaschinen
US5417251A (en) * 1991-09-23 1995-05-23 Iro Ab Programmable weft insertion brake for looms
EP0826806A1 (de) * 1996-09-03 1998-03-04 L.G.L. Electronics S.p.A. Schussfadenbremse insbesondere für Luftdüsenwebmaschinen
EP0902109A1 (de) * 1997-09-11 1999-03-17 Lindauer Dornier Gesellschaft M.B.H Steuerbare Schussfadenzubringer- und -klemmvorrichtung und Vorrichtungsanordnung zum Minimieren des Schussfadenabfalles bei der Gewebeherstellung auf Webmaschinen, insbesondere auf Greiferwebmaschinen
EP0942083A2 (de) * 1998-03-12 1999-09-15 L.G.L. Electronics S.p.A. Modulierte Schussfadenbremse für Textilmaschinen
EP0972734A1 (de) * 1998-07-17 2000-01-19 L.G.L. Electronics S.p.A. Modulierte Schussfadenbremse für Textilmaschinen
EP1016743A1 (de) * 1998-12-09 2000-07-05 Sulzer Textil Ag Einrichtung zum gesteuerten Bewegen eines Kettfadens
US6095449A (en) * 1995-09-20 2000-08-01 Iro Ab Device and method to control yarn tension and yarn feeder
WO2000044970A1 (en) * 1999-01-29 2000-08-03 Te Strake B.V. Loom with an insertion brake
EP1072707A1 (de) * 1999-06-01 2001-01-31 L.G.L. Electronics S.p.A. Vorrichtung zur Fadenbremsenbetätigung, insbesondere für Webmaschinen und dergleichen
US6189576B1 (en) 1998-12-09 2001-02-20 Sulzer Rueti Ag Apparatus for the controlled moving of a warp thread
DE10013625A1 (de) * 2000-03-18 2001-09-27 Dornier Gmbh Lindauer Fadenbremse, insbesondere Schussfadenbremse für Webmaschinen
NL1017378C2 (nl) * 2001-02-16 2002-08-19 Te Strake Bv Werkwijze voor de functiebewaking van een inlooprem.
EP1310587A2 (de) * 2001-07-11 2003-05-14 Tsudakoma Kogyo Kabushiki Kaisha Verfahren zur Steuerung des Schussfadenrückzuges
BE1014435A5 (nl) * 2001-10-19 2003-10-07 Dirk Benoit Inrichting voor het regelen van de spanning in een voortbewegend garen.
EP1405941A1 (de) * 2002-10-04 2004-04-07 L.G.L. Electronics S.p.A. Schussfadenbremsesteuereinrichtung für Webmaschinen
US7077168B2 (en) 2002-04-23 2006-07-18 Lindauer Dornier Gesellschaft Mbh Thread tension regulation in a thread brake device and method in a textile processing machine
EP1783255A1 (de) * 2005-11-04 2007-05-09 L.G.L. Electronics S.p.A. Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen
WO2008017319A1 (de) * 2006-08-09 2008-02-14 Memminger-Iro Gmbh Fadenliefergerät mit neuartigem fadenfühler
CN102765638A (zh) * 2012-07-19 2012-11-07 绍兴文理学院 一种自动调节纱线张力的调节器
CN106435964A (zh) * 2016-11-29 2017-02-22 江苏悦达家纺有限公司 一种可调节纬纱张力的储纬器
CN107190409A (zh) * 2017-05-16 2017-09-22 东华大学 一种纱线张力比较装置
WO2018009119A1 (en) * 2016-07-06 2018-01-11 Iro Aktiebolag Weft yarn feeding device forming an intermediate yarn buffer and a method for controlling a weft yarn feeding device
WO2020011915A1 (de) * 2018-07-11 2020-01-16 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren zum schussfadeneintrag an einer webmaschine und webmaschine
CN110923930A (zh) * 2019-11-12 2020-03-27 台州施特自动化有限公司 一种针织设备用进线机构
EP3754069A1 (de) 2019-06-17 2020-12-23 Vandewiele NV Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111115367B (zh) * 2020-01-06 2021-11-19 苏州创易技研股份有限公司 一种设定型张力控制系统及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803146C1 (en) * 1988-02-03 1989-04-06 Emil Jaeger Gmbh & Co Kg, 4400 Muenster, De Thread-tensioning device for the weft threads of a weaving machine
EP0356380A1 (de) * 1988-08-25 1990-02-28 Sulzer RàœTi Ag Verfahren zum Vermeiden von Spannungsspitzen eines Schussfadens beim Schusseintrag während des Bremsvorganges
EP0357975A2 (de) * 1988-09-08 1990-03-14 NUOVA VAMATEX S.p.A. Schussspannungskontrolleinrichtung bei einer Webmaschine mit ununterbrochener Schusszufuhr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803146C1 (en) * 1988-02-03 1989-04-06 Emil Jaeger Gmbh & Co Kg, 4400 Muenster, De Thread-tensioning device for the weft threads of a weaving machine
EP0356380A1 (de) * 1988-08-25 1990-02-28 Sulzer RàœTi Ag Verfahren zum Vermeiden von Spannungsspitzen eines Schussfadens beim Schusseintrag während des Bremsvorganges
EP0357975A2 (de) * 1988-09-08 1990-03-14 NUOVA VAMATEX S.p.A. Schussspannungskontrolleinrichtung bei einer Webmaschine mit ununterbrochener Schusszufuhr

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417251A (en) * 1991-09-23 1995-05-23 Iro Ab Programmable weft insertion brake for looms
EP0634509A1 (de) * 1993-07-15 1995-01-18 Lindauer Dornier Gesellschaft M.B.H Schussfaden-Bremseinrichtung für Webmaschinen
US6095449A (en) * 1995-09-20 2000-08-01 Iro Ab Device and method to control yarn tension and yarn feeder
EP0826806A1 (de) * 1996-09-03 1998-03-04 L.G.L. Electronics S.p.A. Schussfadenbremse insbesondere für Luftdüsenwebmaschinen
EP0902109A1 (de) * 1997-09-11 1999-03-17 Lindauer Dornier Gesellschaft M.B.H Steuerbare Schussfadenzubringer- und -klemmvorrichtung und Vorrichtungsanordnung zum Minimieren des Schussfadenabfalles bei der Gewebeherstellung auf Webmaschinen, insbesondere auf Greiferwebmaschinen
US6026865A (en) * 1997-09-11 2000-02-22 Lindauer Dornier Gesellschaft Mbh Axially slidable weft thread presenting levers and clamping arrangement for minimizing thread waste
EP0942083A2 (de) * 1998-03-12 1999-09-15 L.G.L. Electronics S.p.A. Modulierte Schussfadenbremse für Textilmaschinen
EP0942083A3 (de) * 1998-03-12 1999-12-15 L.G.L. Electronics S.p.A. Modulierte Schussfadenbremse für Textilmaschinen
US6224009B1 (en) 1998-07-17 2001-05-01 L.G.L. Electronics S.P.A. Device for modulated braking of a weft yarn for textile machines
EP0972734A1 (de) * 1998-07-17 2000-01-19 L.G.L. Electronics S.p.A. Modulierte Schussfadenbremse für Textilmaschinen
EP1016743A1 (de) * 1998-12-09 2000-07-05 Sulzer Textil Ag Einrichtung zum gesteuerten Bewegen eines Kettfadens
US6189576B1 (en) 1998-12-09 2001-02-20 Sulzer Rueti Ag Apparatus for the controlled moving of a warp thread
WO2000044970A1 (en) * 1999-01-29 2000-08-03 Te Strake B.V. Loom with an insertion brake
EP1072707A1 (de) * 1999-06-01 2001-01-31 L.G.L. Electronics S.p.A. Vorrichtung zur Fadenbremsenbetätigung, insbesondere für Webmaschinen und dergleichen
DE10013625A1 (de) * 2000-03-18 2001-09-27 Dornier Gmbh Lindauer Fadenbremse, insbesondere Schussfadenbremse für Webmaschinen
US6418976B2 (en) 2000-03-18 2002-07-16 Lindauer Dornier Gesellschaft Mbh Thread brake system with a linear electric motor for weaving looms
NL1017378C2 (nl) * 2001-02-16 2002-08-19 Te Strake Bv Werkwijze voor de functiebewaking van een inlooprem.
EP1233090A1 (de) * 2001-02-16 2002-08-21 Te Strake B.V. Verfahren zur Überwachung des Betriebes einer Eintragsbremse
EP1310587A2 (de) * 2001-07-11 2003-05-14 Tsudakoma Kogyo Kabushiki Kaisha Verfahren zur Steuerung des Schussfadenrückzuges
EP1310587A3 (de) * 2001-07-11 2003-09-17 Tsudakoma Kogyo Kabushiki Kaisha Verfahren zur Steuerung des Schussfadenrückzuges
BE1014435A5 (nl) * 2001-10-19 2003-10-07 Dirk Benoit Inrichting voor het regelen van de spanning in een voortbewegend garen.
US7077168B2 (en) 2002-04-23 2006-07-18 Lindauer Dornier Gesellschaft Mbh Thread tension regulation in a thread brake device and method in a textile processing machine
EP1405941A1 (de) * 2002-10-04 2004-04-07 L.G.L. Electronics S.p.A. Schussfadenbremsesteuereinrichtung für Webmaschinen
EP1783255A1 (de) * 2005-11-04 2007-05-09 L.G.L. Electronics S.p.A. Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen
WO2008017319A1 (de) * 2006-08-09 2008-02-14 Memminger-Iro Gmbh Fadenliefergerät mit neuartigem fadenfühler
CN102765638A (zh) * 2012-07-19 2012-11-07 绍兴文理学院 一种自动调节纱线张力的调节器
WO2018009119A1 (en) * 2016-07-06 2018-01-11 Iro Aktiebolag Weft yarn feeding device forming an intermediate yarn buffer and a method for controlling a weft yarn feeding device
EP3481979A4 (de) * 2016-07-06 2020-03-04 IRO Aktiebolag Einen zwischengarnpuffer formende schussfadenzuführvorrichtung und verfahren zur steuerung einer schussfadenzuführvorrichtung
CN106435964A (zh) * 2016-11-29 2017-02-22 江苏悦达家纺有限公司 一种可调节纬纱张力的储纬器
CN107190409A (zh) * 2017-05-16 2017-09-22 东华大学 一种纱线张力比较装置
CN107190409B (zh) * 2017-05-16 2019-02-19 东华大学 一种纱线张力比较装置
WO2020011915A1 (de) * 2018-07-11 2020-01-16 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren zum schussfadeneintrag an einer webmaschine und webmaschine
EP3754069A1 (de) 2019-06-17 2020-12-23 Vandewiele NV Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung
WO2020254091A1 (en) 2019-06-17 2020-12-24 Vandewiele Nv Weft thread tensioning device and method of operating a weft thread tensioning device
CN110923930A (zh) * 2019-11-12 2020-03-27 台州施特自动化有限公司 一种针织设备用进线机构

Also Published As

Publication number Publication date
IT9020599A0 (de) 1990-06-11
IT9020599A1 (it) 1991-12-11
HK46496A (en) 1996-03-22
EP0467059B1 (de) 1995-02-22
ES2068430T3 (es) 1995-04-16
IT1248716B (it) 1995-01-26
DE69107536D1 (de) 1995-03-30
DE69107536T2 (de) 1995-06-22
ATE118830T1 (de) 1995-03-15
DK0467059T3 (da) 1995-07-17
GR3015168T3 (en) 1995-05-31

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