EP1371763A2 - Fadenbremse für Webmaschinen - Google Patents

Fadenbremse für Webmaschinen Download PDF

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Publication number
EP1371763A2
EP1371763A2 EP03010532A EP03010532A EP1371763A2 EP 1371763 A2 EP1371763 A2 EP 1371763A2 EP 03010532 A EP03010532 A EP 03010532A EP 03010532 A EP03010532 A EP 03010532A EP 1371763 A2 EP1371763 A2 EP 1371763A2
Authority
EP
European Patent Office
Prior art keywords
yarn
eyelets
spindle
main housing
braking
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
EP03010532A
Other languages
English (en)
French (fr)
Other versions
EP1371763A3 (de
EP1371763B1 (de
Inventor
Giovanni Pedrini
Rosario Castelli
Ruggero Magoni
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 EP1371763A2 publication Critical patent/EP1371763A2/de
Publication of EP1371763A3 publication Critical patent/EP1371763A3/de
Application granted granted Critical
Publication of EP1371763B1 publication Critical patent/EP1371763B1/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
    • B65H59/26—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
    • 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

  • the present invention relates to a yarn-braking device for weaving machines.
  • a known braking device as described in the prior Italian Patent of Industrial Invention No. 01303154 of the same applicant, comprises a triad of stationary, coaxial yarn-guide eyelets, which are passed through by the yarn which, in the span between the eyelets, follows a rectilinear path.
  • a rocking lever is fastened to a U-shaped braking member, which is arranged astride of the middle eyelet for engaging the yarn, during braking, on its free lengths between the middle eyelet and the end eyelets.
  • the lever is linked to the rod of a linear motor which, when operated, causes it to rock.
  • the lever by deviating the yarn from its rectilinear path, causes it to brake due to friction.
  • a main object of the present invention is to provide a yarn-braking device for weaving machines which is adjustable in respect of the kind of yarn, so that stronger or weaker braking actions will be provided depending on the features of the yarn.
  • Another object of this invention is to provide such device in such a way that it can be easily and quickly adjusted.
  • a further object of this invention is to provide such device in such a way that it can be manufactured cheaply and easily, as well as by means of known processes and equipment, commonly employed in this field.
  • a generic weft feeder 10 comprises a motor housing 12 to which a stationary cylinder 14 is attached.
  • a braking device 20 shown in more detail in Figs. 2-5, is supported at the end 22 of a stationary arm 16 projecting from motor housing 12 parallelly to the axis of cylinder 14.
  • the end 22 of the latter is radially bent towards the axis of cylinder 14, and supports a hollow stud 24 on which a main housing 26 of device 20 is clamped.
  • main housing 26 has a cylindrical cavity 28, whose diameter matches with stud 24, providing a seat for the stud.
  • the wall of cylindrical cavity 28 has a longitudinal opening 30, and braking device 20 is secured on stud 24 by a fastening screw, which is inserted in a tangential hole 82 made on an edge of opening 30 and engages a corresponding threaded hole made on the opposite edge.
  • Braking device 20 comprises a triad of coaxial yarn-guide eyelets 32, 34, 36, through which passes weft yarn F, and a U-shaped braking member 58 which is radially fastened to the driving shaft 38 of a rotary motor 40, and is arranged astride of middle eyelet 34 for engaging yarn F, during braking, in its free lengths between middle eyelet 34 and end eyelets 32, 36, thereby causing the yarn to be braked by friction.
  • a pair of threaded bushes 42, 46 supporting respective end eyelets 32, 36 are supported at the opposite counter-threaded ends of a spindle 44 which is pivotally supported, about its middle section, on a bracket 48 attached to main housing 26.
  • Middle eyelet 34 is fastened to bracket 48.
  • a pair of retaining rings 60 are mounted on spindle 44 at the opposite sides of bracket 48 for axially locking the spindle.
  • the ends of a rod 54 which is parallel to spindle 44 and integral with middle eyelet 34, engage respective holes made on the necks 52, 56 of end eyelets 32, 36, which necks connect the eyelets to respective bushes 42, 46.
  • Rod 54 is adapted to guide the translation, while preventing the rotation, of end eyelets 32, 36.
  • the head of spindle 44 has a groove 50 which is engageable, for adjusting the position of the eyelets, by a screwdriver (not shown).
  • spindle 44 could be provided with a knob for easier adjustment of the device.
  • rod 54 can be replaced with other retaining guides adapted to prevent the rotation of the end eyelets around the axis of the spindle, with respect to the main housing.
  • Rotary motor 40 which operates braking member 58 could be replaced with an assembly provided with a linear motor and linkages of the kind described in the above mentioned prior patent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP03010532A 2002-06-11 2003-05-10 Fadenbremse für Webmaschinen Expired - Lifetime EP1371763B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20020489 2002-06-11
IT2002TO000489A ITTO20020489A1 (it) 2002-06-11 2002-06-11 Dispositivo di frenatura del filato per macchine tessili.

Publications (3)

Publication Number Publication Date
EP1371763A2 true EP1371763A2 (de) 2003-12-17
EP1371763A3 EP1371763A3 (de) 2004-04-14
EP1371763B1 EP1371763B1 (de) 2006-08-16

Family

ID=27639150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03010532A Expired - Lifetime EP1371763B1 (de) 2002-06-11 2003-05-10 Fadenbremse für Webmaschinen

Country Status (4)

Country Link
EP (1) EP1371763B1 (de)
CN (1) CN100455707C (de)
DE (1) DE60307544T2 (de)
IT (1) ITTO20020489A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102454006A (zh) * 2010-10-29 2012-05-16 吴江东益纺织有限公司 喷水织机压线装置
ITTO20111217A1 (it) * 2011-12-28 2013-06-29 Lgl Electronics Spa Dispositivo frena-trama per alimentatori di filato a tamburo fisso
CN107313160A (zh) * 2017-08-22 2017-11-03 安徽华泰纺织有限公司 专用于喷气织机夹纱器的防护装置
CN107938121B (zh) * 2017-12-21 2023-08-29 吴江君和纺织电器有限公司 夹丝器、张力器及纺织设备
CN113174684B (zh) * 2021-04-28 2022-07-12 范德威尔（中国）纺织机械有限公司 纬纱制动器及其控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0972734A1 (de) * 1998-07-17 2000-01-19 L.G.L. Electronics S.p.A. Modulierte Schussfadenbremse für Textilmaschinen
US6135377A (en) * 1996-06-27 2000-10-24 Nouva Roj Electrotex S.R.L. Yarn brake for looms
EP1367157A1 (de) * 2002-05-30 2003-12-03 L.G.L. Electronics S.p.A. Fadenbremse für Textilmaschinen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0475892B1 (de) * 1990-09-10 1995-05-17 Sulzer RàœTi Ag Fadenbremse für Webmaschinen
BE1005173A3 (nl) * 1991-08-13 1993-05-11 Picanol Nv Draadrem.
DE19544202B4 (de) * 1995-11-28 2007-01-04 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zum Einregeln einer nach einem Rechenspanner vorliegenden Fadenzugkraft in einer Textilmaschine
NL1011171C1 (nl) * 1999-01-29 2000-08-01 Te Strake Bv Weefmachine met een inlooprem.
DE60017667T2 (de) * 1999-10-26 2005-07-07 L.G.L. Electronics S.P.A., Gandino Schussfadenbremse, insbesondere für Webmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6135377A (en) * 1996-06-27 2000-10-24 Nouva Roj Electrotex S.R.L. Yarn brake for looms
EP0972734A1 (de) * 1998-07-17 2000-01-19 L.G.L. Electronics S.p.A. Modulierte Schussfadenbremse für Textilmaschinen
EP1367157A1 (de) * 2002-05-30 2003-12-03 L.G.L. Electronics S.p.A. Fadenbremse für Textilmaschinen

Also Published As

Publication number Publication date
EP1371763A3 (de) 2004-04-14
EP1371763B1 (de) 2006-08-16
CN100455707C (zh) 2009-01-28
ITTO20020489A1 (it) 2003-12-11
DE60307544D1 (de) 2006-09-28
ITTO20020489A0 (it) 2002-06-11
CN1470696A (zh) 2004-01-28
DE60307544T2 (de) 2007-09-13

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