EP1783255A1 - Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen - Google Patents

Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen Download PDF

Info

Publication number
EP1783255A1
EP1783255A1 EP06019216A EP06019216A EP1783255A1 EP 1783255 A1 EP1783255 A1 EP 1783255A1 EP 06019216 A EP06019216 A EP 06019216A EP 06019216 A EP06019216 A EP 06019216A EP 1783255 A1 EP1783255 A1 EP 1783255A1
Authority
EP
European Patent Office
Prior art keywords
yarn
eyelet
arm
loom
running path
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.)
Withdrawn
Application number
EP06019216A
Other languages
English (en)
French (fr)
Inventor
Rosario Castelli
Pietro Zenoni
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.)
LGL Electronics SpA
Original Assignee
LGL Electronics 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 LGL Electronics SpA filed Critical LGL Electronics SpA
Publication of EP1783255A1 publication Critical patent/EP1783255A1/de
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B65H59/32—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path the surfaces being urged away from each other
    • 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

  • the present invention relates to a yarn-recovery braking device particularly for weaving lines equipped with air jet looms.
  • the loom draws the yarn either directly from a spool or via a weft feeder which draws the yarn from the spool and delivers it to the loom under a controlled tension.
  • the yarn feeder is typically provided with a stop member which stops the yarn unwinding from the feeder in certain stages of the weaving process.
  • a braking device such as that described in US 5,544,680 between the weft feeder and the loom.
  • Such device generally comprises two aligned stationary eyelets through which the yarn is passed, as well as a rotating recovering device which is arranged between the eyelets and bears a pair of pins at diametrically opposed positions with respect to the axis of rotation. At rest, the pins do not interfere with the unwinding yarn. On the contrary, by rotating the recovery device to its operative position, the pins deviate the yarn from its rectilinear path aligned to the eyelets so that a lenght of yarn is stored between the two stationary eyelets. When the recovery member is rotated back to its resting position, the yarn previously recovered is returned to the loom.
  • the known braking devices of the above-mentioned type have the drawback that, when the yarn is recovered from the loom, the upstream yarn (i.e., the feeder-side yarn) is subjected to considerable peaks of tension. As well known to the person skilled in the art, this circumstance is undesired because it may cause the yarn to break and it may affect the correctness and the accuracy of the feeding process.
  • a general air-jet loom 10 draws yarn F from a spool 12 via a yarn feeder 14 that controls the tension of the yarn fed to the loom.
  • Yarn feeder 14 comprises a stationary drum 16 on which a swivel arm 18 driven by a motor 20 winds a plurality of yarn loops forming a weft reserve RT.
  • a stationary arm 22 projects from motor housing parallel to the axis of the drum and supports an electro-actuated stop member 24 having the aim of locking the yarn F unwinding from drum 16 in certain stages of the weaving process.
  • a braking device 26 is arranged between yarn feeder 14 and loom 10, which is adapted to reduce the peaks of tension to which the yarn is subjected when the above stop member 24 is energized.
  • braking device 26 comprises a first pair of stationary yarn-guide eyelets 28, 30 aligned to each other along the running path of yarn F, and a deviating arm 32 arranged between stationary eyelets 28, 30 which is pivotally supported under control of a motor 34 about an axis A lying at right angles to the running path of yarn F.
  • Arm 32 bears a second pair of yarn-guide eyelets 36, 38 aligned to each other, of which a first eyelet 36 is arranged along the running path of yarn F near the axis of rotation A, and a second eyelet 38 is attached to the free end of arm 32.
  • both eyelets 28, 30 and 36, 38 have a beveled inner profile.
  • Eyelet 36 is positioned such that the axis of rotation A is tangent to its inner profile on the side of the incoming yarn, and the direction of rotation of the arm is such that yarn F is bent about the axis of rotation A (counter-clock direction in Fig. 5).
  • motor 34 is a brushless motor controlled by position in a conventional way in the field, in order to accurately control the angle of rotation of the arm, the amount of recovered yarn depending from said angle, as will be described below.
  • yarn F to be fed to loom 10 successively passes through the four yarn-guide eyelets 28, 36, 38, 30.
  • arm 32 At rest, arm 32 is standing in the passive position of Figs. 1-3, with its eyelets 36, 38 aligned to stationary eyelets 28, 30, so that it does not interfere with the running yarn.
  • stop member 24 is energized in order to lock the yarn unwinding from the drum, arm 32 is rotated of an angle ⁇ to its active position, thereby causing the yarn to be deviated from its rectilinear path aligned to stationary yarn-guide eyelets 28, 30, and a lenght of yarn to be recovered from the downstream loom (Fig. 5).
  • the upstream yarn is not subjected to stress or tensioning because the upstream eyelet 36 on arm 32 is positioned near the axis of rotation A and substantially rotates about itself. As shown in the Figures, the amount of recovered yarn is proportional to the angle of rotation ⁇ . In order to return the yarn, arm 32 is rotated back to the initial position, with the four yarn-guide eyelets aligned to one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP06019216A 2005-11-04 2006-09-14 Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen Withdrawn EP1783255A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO20050781 ITTO20050781A1 (it) 2005-11-04 2005-11-04 Dispositivo di frenatura a recupero di trama per linee di tessitura

Publications (1)

Publication Number Publication Date
EP1783255A1 true EP1783255A1 (de) 2007-05-09

Family

ID=37709660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06019216A Withdrawn EP1783255A1 (de) 2005-11-04 2006-09-14 Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen

Country Status (3)

Country Link
EP (1) EP1783255A1 (de)
CN (1) CN1958901A (de)
IT (1) ITTO20050781A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120156A1 (it) * 2012-02-22 2013-08-23 Lgl Electronics Spa Apparato di alimentazione di filato a tensione controllata per macchine tessili, con funzione di recupero del filato.
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
CN111470379A (zh) * 2020-04-17 2020-07-31 李小琴 用于纺织机械的消极式送纱器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467059A1 (de) * 1990-06-11 1992-01-22 NUOVA VAMATEX S.p.A. Vorrichtung zur Spannungsregulierung und Rückziehen von Schussgarn in Webmaschinen
EP1258550A2 (de) * 2001-05-11 2002-11-20 Kabushiki Kaisha Toyota Jidoshokki Schussfadeneintragskontrollvorrichtung in eine Düsenwebmaschine
WO2003038170A1 (en) * 2001-10-29 2003-05-08 Picanol N.V., Naamloze Vennootschap Method and device for supplying weft thread in a wearing machine, as well as a brake and/or damper mechanism applied thereby
US20050150564A1 (en) * 2002-03-04 2005-07-14 Jozef Peeters Device for detecting and/or adjusting a tensile force in a yarn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467059A1 (de) * 1990-06-11 1992-01-22 NUOVA VAMATEX S.p.A. Vorrichtung zur Spannungsregulierung und Rückziehen von Schussgarn in Webmaschinen
EP1258550A2 (de) * 2001-05-11 2002-11-20 Kabushiki Kaisha Toyota Jidoshokki Schussfadeneintragskontrollvorrichtung in eine Düsenwebmaschine
WO2003038170A1 (en) * 2001-10-29 2003-05-08 Picanol N.V., Naamloze Vennootschap Method and device for supplying weft thread in a wearing machine, as well as a brake and/or damper mechanism applied thereby
US20050150564A1 (en) * 2002-03-04 2005-07-14 Jozef Peeters Device for detecting and/or adjusting a tensile force in a yarn

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120156A1 (it) * 2012-02-22 2013-08-23 Lgl Electronics Spa Apparato di alimentazione di filato a tensione controllata per macchine tessili, con funzione di recupero del filato.
EP2631339A1 (de) * 2012-02-22 2013-08-28 L.G.L. Electronics S.p.A. Garnzuführungsvorrichtungen mit geregelter Spannung für Textilmaschinen, mit Garnrückgewinnungsfunktion
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

Also Published As

Publication number Publication date
CN1958901A (zh) 2007-05-09
ITTO20050781A1 (it) 2007-05-05

Similar Documents

Publication Publication Date Title
EP2503039B1 (de) Positiver Garnzuführer mit Spannungsbegrenzer
US5123455A (en) Weft feeder with apparatus for broken thread removal
EP1783255A1 (de) Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen
EP1741817B1 (de) Faden-Rückzugsvorrichtung für Textilmaschinen
CN107522023A (zh) 具有机动纱线缠绕卷轴的纱线进给机
EP0269140B1 (de) Verfahren und Vorrichtung zum Reparieren der Fadenzufuhr in Webmaschinen bei Fadenbruch zwischen Lieferspule und Schussfadenspeicher
US5988228A (en) Leno selvage former for a weaving loom
RU2129174C1 (ru) Лентоткацкий станок
EP2128318A1 (de) Aufnahmevorrichtung
US11319650B2 (en) Weft thread cutting device looms without shuttles
US6948532B2 (en) Method and apparatus for the weft insertion in a jet weaving machine
JP2000212858A (ja) 緯糸切断装置及びその切断装置を有する織機
EP0580267B1 (de) Vorrichtung zum Speisen eines periodisch arbeitenden Fadenverbrauchers
JPH11505897A (ja) 重合する保持要素及びガイド要素を有する緯糸保持装置
EP0507739A1 (de) Vorrichtung für das Vermeiden von Schussbanden in einer Webmaschine
EP1721034B1 (de) Vorrichtung zur webrandbildung, webmaschine mit webrandbildungsvorrichtung und verfahren zur bildung eines webrands
EP1310587A2 (de) Verfahren zur Steuerung des Schussfadenrückzuges
US20040154686A1 (en) Method and device for opening a gripper clip of a mechanical-loom gripper
EP0493859A1 (de) Vorrichtung zur Entfernung eines fehlerhaften Schussfadens an einer Luftwebmaschine
US3530903A (en) Method of weaving
JP2006322105A (ja) 耳組装置の耳経糸張力付与装置
JPS61113859A (ja) 織機の緯糸張力検出器
JPH1181087A (ja) よこ糸張力付与装置
JPS589176B2 (ja) ヨコイトソクチヨウソウチ
JPS58214558A (ja) ジエツトル−ムの緯糸測長装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

18W Application withdrawn

Effective date: 20070416