EP1132510B1 - Ballonbegrenzer für eine Schussfadenliefervorrichtung in Webmaschinen - Google Patents

Ballonbegrenzer für eine Schussfadenliefervorrichtung in Webmaschinen Download PDF

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Publication number
EP1132510B1
EP1132510B1 EP01104568A EP01104568A EP1132510B1 EP 1132510 B1 EP1132510 B1 EP 1132510B1 EP 01104568 A EP01104568 A EP 01104568A EP 01104568 A EP01104568 A EP 01104568A EP 1132510 B1 EP1132510 B1 EP 1132510B1
Authority
EP
European Patent Office
Prior art keywords
ring
drum
feeder
balloon device
threading
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.)
Expired - Lifetime
Application number
EP01104568A
Other languages
English (en)
French (fr)
Other versions
EP1132510A3 (de
EP1132510A2 (de
Inventor
Giovanni Pedrini
Pietro Zenomi
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 EP1132510A2 publication Critical patent/EP1132510A2/de
Publication of EP1132510A3 publication Critical patent/EP1132510A3/de
Application granted granted Critical
Publication of EP1132510B1 publication Critical patent/EP1132510B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/003—Arrangements for threading or unthreading the guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/22—Guides for filamentary materials; Supports therefor adapted to prevent excessive ballooning of material
    • 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
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/366—Conical
    • 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 an anti-balloon device for weft feeders of weaving looms of the gripper or bullet type, known as mechanical-insertion looms, and of the jet-insertion type.
  • weft feeders for modern weaving looms are devices which comprise a fixed drum, having a constant or variable diameter, on which a weft winding arm, rotating in a fishing-reel fashion around said drum, winds a plurality of turns of thread which constitute a weft reserve.
  • a weft reserve monitoring system which receives the signals of a sensor adapted to detect the passage of the unwinding turns, moves the rotating arm and restores the weft reserve as its turns unwind to feed the loom.
  • anti-balloon devices designed to prevent, or at least contain within narrow limits, the formation of said balloon.
  • anti-balloon devices are constituted by annular elements which surround the drum of the feeder directly upstream of said braking means and lie more or less extensively in the axial direction of said drum, assuming configurations which vary from a simply annular one to a more truly cylindrical one as disclosed in US 4013238, which represents the closest state of the art.
  • said anti-balloon devices in order to be effective, are arranged very close to the surface of the drum and therefore significantly hinder the threading - or rethreading, in case of weft breakage - of the feeder, correspondingly delaying the production cycles with economically disadvantageous consequences.
  • an object of the invention is to provide an anti-balloon device which effectively contrasts the formation of the balloon of thread, in that it maintains its position very close to the surface of the drum, but at the same time does not hinder feeder threading, which on the contrary is highly facilitated, making the device according to the invention very advantageous in modern highspeed weaving processes.
  • the invention is based on the inventive concept of providing the anti-balloon device in the form of a frustum-shaped ring whose smaller diameter is slightly greater than the diameter of the drum of the feeder, of fitting said ring on the drum, arranging it directly upstream of the braking means, and of connecting said ring, by way of pivoting means with controlled rotation, to the structure of the feeder, so that it can be inclined at an angle to the longitudinal axis of the drum.
  • the ring delimits, in the inclined position, a thread passage gap which is significantly larger than the gap between the ring and the drum when the ring is in the active position at right angles to the axis of the drum; moreover, the passage gap is correctly orientated in the direction adapted to facilitate the threading of the weft thread in the terminal thread guiding ring through the directly adjacent braking means.
  • 1 generally designates a conventional weft feeder comprising a fixed drum 2 on which a hollow weft winding arm 3, which rotates in a fishing-reel fashion around the drum, winds a plurality of turns of thread which constitute a weft reserve RT.
  • a braking means 4 adapted to keep substantially constant the mechanical tension of the thread F being unwound.
  • the anti-balloon device 5 is substantially constituted by a frustum-shaped ring 5a in which the smaller diameter is slightly larger than the diameter of the drum 2 of the feeder. The ring is fitted over the drum and is arranged directly upstream of the braking means 4.
  • the ring 5a is connected to the structure of the feeder 1 by way of pivoting means with controlled rotation, generally designated by the reference numeral 6, so that it can be tilted at an angle to the longitudinal axis of the drum 2 of said feeder.
  • the ring 5a delimits, in the inclined position, a passage gap L for the thread ( Figure 2) which is significantly larger than the gap between the ring and the drum when said ring is in the operating position at right angles to the axis of the drum; moreover, the gap is correctly orientated in the direction that facilitates the threading of the weft thread F, through the adjacent braking means 4, in the direction of the thread guiding ring G.
  • the controlled-rotation pivoting means 6 are provided as shown in the detail views of Figures 3 and 4 and substantially comprise, on the inner side of the cover C of the feeder 1, a tubular hub 61 being rigidly coupled to the cover and provided with a seat 62 which accommodates a cylindrical spacer 63 being in turn provided with a seat 63a for accommodating a disk-shaped permanent magnet 64; the magnet and the spacer are retained in their respective seats by a through screw 65.
  • the spacer 63 has an uneven edge which is formed by mutually opposite inclined planes which delimit crests CR, adapted to selectively engage, so as to act as position markers, corresponding hollows GO' and GO" provided on a similar spacer 53 ( Figure 4) which is rigidly coupled to a coupling bracket 50 of the anti-balloon ring 5a.
  • the spacer 53 comprises a seat 53a for accommodating a disk-like permanent magnet 54 which is locked by a corresponding screw 55 and whose polarity is opposite with respect to the facing magnet 64.
  • the two mutually opposite magnets 54 and 64 ensure the axial coupling of the spacer 53 to the corresponding spacer 63 but allow limited mutual movements and the mutual rotation of said spacers which moves the ring 5a of the device 5 from the active position, in which said ring is perpendicular to the axis of the drum 2 ( Figure 1), to the threading position, in which the ring 5a is inclined by an angle "a" with respect to the axis of said drum ( Figure 2); the threading position can be reached by the ring after the disengagement, actuated by a button P, of the braking means 4 and its axial advancement.
  • the two angular positions are rendered stable by the position-marking function of the pivoting means 6; the first position is rendered stable thanks to the engagement of the crests CR of the spacer 63 with the hollows GO' of the spacer 53, and the second position is rendered stable thanks to the engagement of the crests CR with the hollows GO" of the spacer 53.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Woven Fabrics (AREA)

Claims (7)

  1. Ballonbegrenzer (5) bei einer Schussfaden-Zuführvorrichtung (1) in einem Webstuhl, welche eine feststehende Trommel (2) aufweist, auf welcher ein umlaufender Arm (3) eine Schussfadenreserve (RT) aufwickelt, deren Wicklungen unter Steuerung einer Bremseinrichtung (4) von der Trommel (2) durch einen End-Fadenführer (G) zur Zuführung zum Webstuhl ablaufen, dadurch gekennzeichnet, dass der Ballonbegrenzer aus einem kegelstumpfförmigen Ring (5a) besteht, dessen kleinerer Durchmesser etwas größer als der Durchmesser der Zuführtrommel (2), wobei der Ring auf die Trommel aufgepasst und in Zuführrichtung direkt vor der Bremseinrichtung (4) angeordnet ist, und dass der Ring (5a) mittels einer Schwenkeinrichtung (6) mit gesteuerter Drehung mit dem Aufbau der Zuführvorrichtung (1) in der Weise verbunden ist, dass er unter einem Winkel zur Längsachse der Trommel (2) neigbar ist, um aus einer aktiven Position, in welcher der Ring rechtwinklig zur Achse der Trommel (2) steht, in eine Position zum Aufwickeln des Fadens auf die Zuführvorrichtung (1) überzugehen, in welcher der Ring unter einem Winkel bezüglich der Trommelachse geneigt ist.
  2. Ballonbegrerizer nach Anspruch 1, dadurch gekennzeichnet, dass der kegelstumpfförmige Ring (5a) in der unter einem Winkel geneigten Fadenaufwindposition einen Spalt (L) für den Durchtritt des Faden (F) begrenzt, welcher deutlich größer ist als der Spalt zwischen dem Ring und der Trommel (2) der Zuführvorrichtung, wenn der Ring in seiner aktiven Position steht, wobei der Spalt (L) des Weiteren in der Richtung korrekt ausgerichtet ist, in welcher das Aufwinden des Schussfadens (F) in dem abschließenden Fadenführungsring (G) durch die direkt benachbarte Bremseinrichtung (4) hindurch vereinfacht wird,
  3. Ballonbegrenzer nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Schwenkeinrichtung (6) mit gesteuerter Drehung als Positionsmarkierung für die unter einem Winkel geneigte aktive Position und die schräg stehende Position des kegelstumpfförmigen Rings (5a) fungiert.
  4. Ballonbegrenzer nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schwenkeinrichtung (6) mit gesteuerter Drehung zwei einander gegenüber stehende Abstandhalter (53-63) aufweist, die jeweils starr mit dem Ring (5a) des Ballonbegrenzers (5) und mit dem Aufbau (C) der Zuführvorrichtung (1) gekoppelt sind, und dass die Abstandhalter bezüglich zueinander drehbar und mit einander so gekoppelt sind, dass begrenzte Bewegungen relativ zueinander in axialer Richtung unter dem Einfluss von Dauermagneten (54-64) möglich sind, die jeweils starr mit jedem Abstandhalter gekoppelt sind und relativ zueinander entgegengesetzt magnetisch polarisiert sind.
  5. Ballonbegrenzer nach Anspruch 4, dadurch gekennzeichnet, dass die Dauermagnete (54-64) scheibenförmig sind.
  6. Ballonbegrenzer nach Anspruch 4, dadurch gekennzeichnet, dass die einander gegenüber stehenden Abstandhalter (53-63) mit unebenen Kanten versehen sind, in denen Erhebungen (CR) und Vertiefungen (GO'-GO") vorhanden sind, die mit einander selektiv in Eingriff gelangen, um so die unter einem Winkel stehende aktive Position und die schräg stehende Position des kegelstumpfförmigen Rings (5a) stabil zu halten.
  7. Ballonbegrenzer nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Schwenkeihrichtung (6) aus einem Motor besteht, der von einem automatischen Fadenwickelsystem der Zuführvorrichtung (1) gesteuert und aktiviert wird, um im Tritt mit dem Fadenaufwickelsystem den Ring (5a) schräg zu stellen.
EP01104568A 2000-03-10 2001-03-05 Ballonbegrenzer für eine Schussfadenliefervorrichtung in Webmaschinen Expired - Lifetime EP1132510B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000TO000219A IT1319948B1 (it) 2000-03-10 2000-03-10 Dispositivo antiballoon per apparecchi alimentatori di trama a telaidi tessitura.
ITTO000219 2000-03-10

Publications (3)

Publication Number Publication Date
EP1132510A2 EP1132510A2 (de) 2001-09-12
EP1132510A3 EP1132510A3 (de) 2003-05-07
EP1132510B1 true EP1132510B1 (de) 2004-11-10

Family

ID=11457552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01104568A Expired - Lifetime EP1132510B1 (de) 2000-03-10 2001-03-05 Ballonbegrenzer für eine Schussfadenliefervorrichtung in Webmaschinen

Country Status (4)

Country Link
EP (1) EP1132510B1 (de)
CN (1) CN1270010C (de)
DE (1) DE60106995T2 (de)
IT (1) IT1319948B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0400862D0 (sv) * 2004-04-01 2004-04-01 Iropa Ag Garnmatningsanordning
SE0402140D0 (sv) * 2004-09-06 2004-09-06 Iro Ab Garnmatningsanordning
DE102005026234A1 (de) * 2005-06-07 2006-12-14 Iro Ab Fadenliefergerät für Greifer- und Projektilwebmaschinen
CZ20131060A3 (cs) * 2013-12-20 2014-09-03 Rieter Cz S.R.O. Způsob odstranění příze, zejména vadné příze, z mezizásobníku příze na pracovním místě textilního stroje a zařízení k jeho provádění
CN108642685A (zh) * 2018-06-01 2018-10-12 德清县春艺纺织有限公司 一种喷水织机的导向固定装置
CN112408094B (zh) * 2020-11-18 2022-09-13 胡少坤 一种收线缓冲器、收线装置及方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1030723B (it) * 1974-10-21 1979-04-10 Calamani S Dispositivo per il controllo del ballone e della tensione del filo in uscita da un apparecchio per il accumulazione e la distribuzione di filo ad una macchina utilizzatrice
SE9303266L (sv) * 1993-09-15 1995-03-16 Iro Ab Vävmaskin med projektil-eller griparanordning samt mataranordning för inslagstråden
IT1265459B1 (it) * 1993-12-29 1996-11-22 Roj Electrotex Nuova Srl Dispositivo di contenimento del filo in uscita da alimentatori di filo

Also Published As

Publication number Publication date
ITTO20000219A1 (it) 2001-09-10
ITTO20000219A0 (it) 2000-03-10
EP1132510A3 (de) 2003-05-07
CN1319690A (zh) 2001-10-31
DE60106995T2 (de) 2005-12-08
DE60106995D1 (de) 2004-12-16
EP1132510A2 (de) 2001-09-12
IT1319948B1 (it) 2003-11-12
CN1270010C (zh) 2006-08-16

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