EP1129976B1 - Paquet de fil textile élastique et proçédé de fonctionnement d'un bobinoir pour fils textiles élastiques - Google Patents

Paquet de fil textile élastique et proçédé de fonctionnement d'un bobinoir pour fils textiles élastiques Download PDF

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Publication number
EP1129976B1
EP1129976B1 EP20010104197 EP01104197A EP1129976B1 EP 1129976 B1 EP1129976 B1 EP 1129976B1 EP 20010104197 EP20010104197 EP 20010104197 EP 01104197 A EP01104197 A EP 01104197A EP 1129976 B1 EP1129976 B1 EP 1129976B1
Authority
EP
European Patent Office
Prior art keywords
yarn
bobbin
layer
package
elastic
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
EP20010104197
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German (de)
English (en)
Other versions
EP1129976A2 (fr
EP1129976A3 (fr
Inventor
Kinzo Hashimoto
Akira Takahashi
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.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
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 Murata Machinery Ltd filed Critical Murata Machinery Ltd
Publication of EP1129976A2 publication Critical patent/EP1129976A2/fr
Publication of EP1129976A3 publication Critical patent/EP1129976A3/fr
Application granted granted Critical
Publication of EP1129976B1 publication Critical patent/EP1129976B1/fr
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
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/34—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails
    • B65H54/346—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails on or outwardly of the fully wound yarn package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H65/00—Securing material to cores or formers
    • B65H65/005—Securing end of yarn in the wound or completed package
    • 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
    • B65H2701/319—Elastic threads

Definitions

  • the known take-up winder for an elastic yarn can switch two bobbin holders between a winding position and a standby position by rotating a turret.
  • a touch roller is provided above and near the bobbin holder located at the winding position so as to come into pressure contact with a yarn layer on a bobbin so that the bobbin can be rotationally driven by driving the touch roller.
  • an elastic yarn traversed by a traverse device is sequentially around the bobbin located at the winding position to form a package.
  • the present invention relates to a yarn package according to the preamble of claim 1 and a method for operating a take-up winder for forming a yarn package according to the preamble of claim 2.
  • a yarn package and a method for operating a take-up winder of this types are known from EP-A-O 927 695.
  • the yarn end may be placed on the yarn layer when the package becomes full. Placing the yarn end on the yarn layer becomes a problem when using an elastic yarn because the adhesiveness of the elastic yarn makes the yarn end finding and drawing out for the next processing step problematic.
  • the take-up winder has yarn transferring means.
  • the yarn transferring means moves the yarn on the yarn layer of the full package to a bobbin end separate from a yarn layer-formed position so as to slacken the yarn using a difference in peripheral speed (difference in peripheral speed between an outer periphery of the package and an outer periphery of the bobbin).
  • the slackened yarn is entangled with a yarn spun out above the empty bobbin so that a winding operation can be smoothly performed on the empty bobbin, and the winding operation on the empty bobbin produces a yarn tension between the full package and the empty bobbin again to cut the slackened yarn.
  • the winding operation can automatically and sequentially shift to an empty bobbin each time a full package is formed.
  • the yarn moved to the bobbin end forms a bunch winding at the bobbin end of the full package to allow a yarn end to be easily found.
  • the number of windings in the bunch winding may conventionally be insufficient, causing the bunch winding to slip out while the package is being transported. Additionally, the mere formation of the bunch winding makes it difficult to pick up the yarn end from the package during a subsequent step.
  • the take-up winder for elastic yarn may comprise two bobbin holders and a yarn transferring means so that when a yarn is wound around a bobbin in one of the bobbin holders to form a yarn layer and the amount of yarn in the yarn layer then reaches a predetermined value, the yarn is transferred to a bobbin provided in the other bobbin holder and having no yarn layer formed thereon, wherein before yarn transfer, rotation speed of the one of the bobbin holders is increased above rotation speed for normal winding.
  • a take-up winder for elastic yarn may comprise two bobbin holders and yarn transferring means so that when a yarn is wound around a bobbin in one of the bobbin holders to form a yarn layer and the amount of yarn in the yarn layer then reaches a predetermined value, the yarn is transferred to a bobbin provided in the other bobbin holder and having no yarn layer formed thereon, wherein during yarn transfer, the yarn transferring means operates to move the yarn wound around the yarn layer-formed bobbin, to a position separate from a yarn layer-formed position on the yarn layer-formed bobbin and then back to the yarn layer-formed position.
  • the take-up winder 5 has an elevating frame 1 that can elevate and lower relative to a machine frame 8, and two parallel bobbin holders 15,16 below the elevating frame 1.
  • the bobbin holders 15,16 are cantilevered by a rotatable turret 2 acting as position changing means so that the vertical positions of the bobbin holders 15,16 can be changed by integrally rotating the bobbin holders 15,16 and the turret 2 around a rotating shaft 14 using a drive source such as an induction motor (not shown in the drawing).
  • the turret 2 is supported on the machine frame 8 and the bobbin holders 15,16 are independently rotated by each motor (not shown).
  • the two bobbin holders 15,16 each have a number of cylindrical bobbins installed thereon in a longitudinal direction thereof.
  • one 15 of the bobbin holders 15,16 is located at a winding position K, which is located above, while the other bobbin holder 16 is located at a standby position L, which is located below.
  • a bobbin having a yarn layer P formed thereon is described as a yarn layer-formed bobbin B or a package Bf, while a bobbin having no yarn layer formed thereon is described as an empty bobbin Be.
  • the elevating frame 1 has a touch roller 3 and a traverse device 4 supported thereon, and the touch roller 3 comes into pressure contact with the yarn layer P on the yarn layer-formed bobbin Bf located at the winding position K, to rotationally drive the bobbin.
  • the traverse device 4 has a traverse guide 6 that traverses a filament yarn (an elastic yarn) Y fed into the machine frame from above, to form the yarn layer P around an outer periphery of the bobbin.
  • a yarn switching guide 7 acting as yarn transferring means comprises a pivoting arm 17 journaled to a lower part of the machine frame 8 and a guide bar 18 attached to a tip of the pivoting arm 17.
  • the pivoting arm 17 is provided on the tip side of the bobbin holders 15,16 and cantilevers the guide bar 18, which is extended from the tip side to a root side the bobbin holders 15,16.
  • the pivoting arm 17 can be rotationally moved around a rotating shaft 19, and is configured such that when the empty bobbin Be is at a yarn switching position M, shown in Figure 3, the pivoting arm 17 is rotationally moved to move the guide bar 18 to a position where the yarn Y can be wound around the empty bobbin Be, as described later
  • the guide bar 18 has a guide groove 9 for positioning the yarn Y at a desired position in an axial direction of the bobbin, as shown in Figures 5A and 5B.
  • Figures 5A and 5B only one empty bobbin Be and only one full package Bf are shown, but the bobbin holders 15,16 have a plurality of empty bobbins Be or full packages Bf arranged thereon in the longitudinal direction thereof and as many guide grooves 9 as the empty bobbins Be (or the full packages Bf).
  • the guide bar 18 can slide in the axial direction of the bobbin so that the slide operation of the guide bar 18 changes the position of the guide groove 9 in the axial direction of the bobbin.
  • the guide groove 9 is normally located at a central position of the bobbin and is moved to the one end side of the bobbin as shown in Figure 5A when the bunch winding 12 is to be formed, thereby guiding the yarn Y to a position on the one end side which is separate from the yarn layer P-formed position.
  • the traverse device 4 has on its upstream side, a yarn removing guide for removing the yarn from the traverse device 4 and a yarn holding guide for holding the removed yarn at a central position of a traverse width (the central position of the bobbin).
  • the elastic yarn Y is urged against a surface of the empty bobbin Be and travels while contacting with the surface over about one-third of the overall circumference of the empty bobbin Be.
  • a portion of the yarn Y which corresponds to an upstream side of the empty bobbin Be is defined as Yb, whereas a portion of the yarn Y which corresponds to a downstream side of the empty bobbin Be is defined as Ya.
  • the yarn switching guide 7 is rotationally moved until the yarn Ya, located on the downstream side of the yarn switching guide 7, approaches the yarn Yb, located on the upstream side thereof, that is, until the yarn Y rotates substantially completely around the empty bobbin Be.
  • the yarn Y is still wound on a periphery of the yarn layer P of the package Bf.
  • the rotation speed of the bobbin holder on the package Bf side is increased above a rotation speed for normal winding.
  • the amount of increase in rotation speed is such that the difference between the peripheral speed of an outer periphery of the yarn layer and the peripheral speed of an outer periphery of one end of the bobbin is eliminated, for example, the rotation speed is increased by about 20% above the rotation speed for normal winding. Since the yarn Y is elastic, it does not cut despite an increase in tension caused by the increased speed.
  • the rotation speed may be increased when the rotational movement of the yarn switching guide 7 is started or when the positions of the bobbin holders start to be changed, but this must be executed at least before the yarn Y falls from the yarn layer P of the package Bf onto the outer periphery of the one end of the bobbin.
  • the yarn switching guide 7 (guide bar 18) is slid toward the one end side of the bobbins Be,Bf in the axial direction thereof so that the yarn Ya caught in the guide groove 9 is located at the one end of the bobbin, which is separate from the yarn layer position, as shown in Figure 5A.
  • the yarn Ya falls from the periphery of the yarn layer P of the package Bf onto a periphery of the bobbin which corresponds to the one end of the package Bf and which is separate from the yarn layer position (this state is shown in Figure 5A).
  • the falling yarn Ya is wound around the periphery about three to five times.
  • the yarn tension decreases substantially due to the difference between the peripheral speed of the outer periphery of the yarn layer P and the peripheral speed of the outer periphery of the bobbin Bf having no yarn layer P formed thereon.
  • the decrease in yarn tension causes the yarn Y to slacken without the need to rapidly brake the bobbin holder 15 on the package Bf side, thereby bringing the yarn Ya into contact with the yarn Yb (this state is shown in Figure 3C).
  • the yarn Ya is entangled with the yarn Yb and then drawn and cut, whereby the yarn Y is wound around the one end of the empty bobbin Be.
  • a winding-end bunch winding 12 is formed at one end of the full package Bf.
  • a winding-start bunch is also formed at the one end of the empty bobbin Be.
  • the bobbin holder 15 on the full-package Bf side may be rapidly braked.
  • the yarn switching guide 7 (guide bar 18) is immediately slid toward the other end side of the bobbins Be and Bf in the axial direction of the bobbin ( Figure 5B).
  • a yarn end bunch-wound at the one end of the package Bf is biased to the yarn layer P and placed on the outer periphery thereof or at least adheres to an end surface Pa of the yarn layer.
  • the yarn Y is wound around the one end of the empty bobbin Be to form the winding-start bunch to thereby complete the yarn transfer.
  • the turret 2 is rotated clockwise to move the empty bobbin Be to the winding position K to bring the empty bobbin Be into contact with the touch roller 3, as shown in Figure 4.
  • the yarn Y is brought into engagement with the traverse guide 6 of the traverse device 4 to allow a normal winding operation to be started.
  • the yarn layer P is sequentially formed on the empty bobbin Be located at the standby position L.
  • the full package Bf with the winding-end bunch winding formed thereon is removed from the bobbin holder 15.
  • a new bobbin Be is then installed on the bobbin holder 15.
  • Theyarn switching guide 7 acts as both as yarn transferring means for transferring the yarn Y from the package Bf to the empty bobbin Be by using the guide groove 9 to move the yarn Y from the surface of the yarn layer P of the full package Bf to the bobbin Bf and as winding-end bunch forming means for forming the winding-end bunch winding 12 at the end of the package Bf and winding-start bunch forming means for forming the winding-start bunch at the end of the empty bobbin Be.
  • the rotation speed of the bobbin holder (in the embodiment in Figure 2, the bobbin holder 15) is increased above the rotation speed for normal winding.
  • This control provides such an amount of yarn required for the winding-end bunch winding that the winding-end does not slip out during the package Bf transporting after it has moved onto the end of the bobbin Bf and before it is cut, thereby enabling a sufficient bunch winding 12 to be formed on the end of the bobbin Bf.
  • the yarn end is prevented from getting loose even during transportation if the bunch winding 12 is formed of the yarn wound three to five times.
  • the above described control provides a sufficient amount of yarn to form the bunch winding 12 and causes the yarn end of the bunch winding 12 wound around the end of the full package Bf to further extend to adhere to the yarn layer end surface Pa of the full package Bf as shown in Figure 6. That is, when the rotation speed of the bobbin holder with the full package Bf is increased, the yarn Ya wound around the end of the bobbin Bf about three to five times still has an excess amount that has not been wound around the bobbin.
  • the guide bar 18 guides the yarn Ya to a position separate from the yarn layer P of the full package Bf, but since that position is close to the yarn layer end surface Pa of the full package Bf, the cut and bunch-wound yarn end comes into contact with the end surface Pa and thus adheres thereto and to the outer peripheral surface of the yarn layer P of the full package Bf. To ensure that the bunch-wound yarn end adheres to the yarn layer end surface Pa, it is also possible, that the guide bar 18 is moved back to the yarn layer side.
  • Figure 6 shows an elastic-yarn package manufactured by the take-up winder for elastic yarn according to this embodiment.
  • the end of the elastic yarn Y wound into the yarn layer P of the elastic-yarn package Bf is dropped from the outer peripheral surface of the yarn layer P onto a position of the bobbin which is separate from the yarn layer position.
  • the yarn end is then wound around the bobbin once or more (about three to five) times and then adheres to the end surface Pa of the yarn layer P in a fashion traversing the end surface Pa.
  • the yarn end rests on the outer peripheral surface of the yarn layer P.
  • the yarn end is looser than the portion of the yarn forming the yarn layer after it has fallen from the yarn layer P and before it moves back onto the yarn layer P.
  • the yarn end is held on the yarn layer end surface Pa of the package Bf and on the outer peripheral surface of the yarn layer P of the package Bf, and adheres to the yarn layer end surface Pa in a fashion traversing the flow of the yarn wound into the yarn layer P of the package Bf, thereby enabling an operator to visually find the yarn end easily. Furthermore, after the yarn end has fallen from the yarn layer P of the package and before it moves back onto the yarn layer P, it is wound more loosely than the portion of the yarn wound into the normal yarn layer P. Accordingly, during a subsequent step, not only the yarn end can be mechanically picked up smoothly but a manual process can also be easily carried out. Consequently, the take-up winder can form packages having appropriately processed yarn ends.
  • the yarn switching guide 7 is used as the yarn transferring means, the winding-end bunch forming means, and the winding-start bunch forming means, but the yarn transferring means and both bunch winding forming means may be separately provided and controlled.
  • the yarn switching position M is located halfway between the winding position K and the standby position L, but the yarn switching operation may be performed at the winding position K, to which the empty bobbin Be has been moved.
  • the present invention configured as described above, has the following effects.
  • An elastic-yarn package is formed wherein an end of an elastic yarn wound into a yarn layer of a package falls from the yarn layer onto a position of a bobbin which is separate from a yarn layer position, and the yarn end is then wound on the bobbin once or more and adheres to an end surface of the yarn layer.
  • the yarn end adheres to the yarn layer end surface in a fashion traversing the flow of the yarn wound into the yarn layer of the package, thereby enabling an operator to visually find the yarn end easily.
  • the yarn end after the yarn end has fallen from the yarn layer of the package and before it moves back onto the yarn layer, it is wound more loosely than the portion of the yarn wound into the normal yarn layer.
  • a take-up winder for elastic yarn which comprises yarn transferring means including two bobbin holders so that when a yarn is wound around a bobbin in one of the bobbin holders to form a yarn layer and the amount of yarn in the yarn layer then reaches a predetermined value, the yarn is transferred to a bobbin provided in the other bobbin holder and having no yarn layer formed thereon, wherein during yarn transfer, the yarn transferring means operates to move the yarn wound around the yarn layer-formed bobbin, to a position separate from a yarn layer position on the bobbin and then to the yarn layer position. Consequently, the cut and bunch-wound yarn end comes into contact with the yarn layer end surface and thus adheres thereto and to an outer peripheral surface of the yarn layer.
  • a take-up winder for elastic yarn which comprises yarn transferring means including two bobbin holders so that when a yarn is wound around a bobbin in one of the bobbin holders to form a yarn layer and the amount of yarn in the yarn layer then reaches a predetermined value, the yarn is transferred to a bobbin provided in the other bobbin holder and having no yarn layer formed thereon, wherein before yarn transfer, rotation speed of the one of the bobbin holders is increased above rotation speed for normal winding. Consequently, a sufficient amount of yarn can be obtained for bunch winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Winding Filamentary Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (3)

  1. Paquet de fil (Bf) formé par une couche de fil (P) sur une bobine (Be) et ayant un bobinage de mèche d'extrémité de fil (12) à l'extrémité de la bobine (Be) à une position qui est séparée d'une position formée de couche de fil sur la bobine (Be),
    caractérisé en ce que le fil est un fil élastique et l'extrémité de fil est enroulée autour de la bobine (Be) au moins une fois et adhère à la surface d'extrémité (Pa) de la couche de fil (P).
  2. Procédé pour la mise en oeuvre d'un bobinoir (5) pour la formation d'un paquet de fil (Bf) selon la revendication 1, comprenant deux supports de bobine (15, 16) et des moyens de transfert de fil (7) de sorte que quand un fil (Y) est enroulé autour d'une bobine (Be) dans un des supports de bobine pour former une couche (P) et la quantité du fil dans la couche de fil atteint ainsi une valeur prédéterminée, le fil est transféré à une bobine vide (Be) prévue dans l'autre support de bobine, caractérisé en ce que
    pendant le transfert de fil élastique, le moyen de transfert de fil (7) déplace le fil de la couche de fil (P) à une position qui est séparée de la position formée d'une couche de fil et en ce qu'avant le transfert de fil, la vitesse de rotation du support de bobine sur lequel est formée la couche de fil est augmentée au delà de la vitesse de rotation pour un enroulement normal.
  3. Procédé pour la mise en oeuvre d'un bobinoir pour la formation d'un paquet de fil (Bf) selon la revendication 1 comprenant deux supports de bobine (15, 16) et des moyens de transfert de fil (7) de sorte que quand un fil (Y) est entouré autour d'une bobine (Be) dans un des deux supports de bobines pour une couche (P) et la quantité de fil dans la couche de fil atteint alors une valeur prédéterminée, le fil est transféré à une bobine vide (Be) prévue dans l'autre support de bobine, caractérisé en ce que pendant le transfert de fil élastique, les moyens de transfert de fil (7) déplacent le fil de la couche de fil (P) à une position qui est séparée par la position formée de la couche de fil et en ce que le déplacement du fil vers une position séparée de la couche de fil (P), le fil est ramené à la couche de fil (P).
EP20010104197 2000-03-01 2001-02-21 Paquet de fil textile élastique et proçédé de fonctionnement d'un bobinoir pour fils textiles élastiques Expired - Lifetime EP1129976B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000055717A JP4085548B2 (ja) 2000-03-01 2000-03-01 弾性糸用パッケージ及び弾性糸用紡糸巻取機
JP2000055717 2000-03-01

Publications (3)

Publication Number Publication Date
EP1129976A2 EP1129976A2 (fr) 2001-09-05
EP1129976A3 EP1129976A3 (fr) 2002-11-13
EP1129976B1 true EP1129976B1 (fr) 2006-06-07

Family

ID=18576795

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Application Number Title Priority Date Filing Date
EP20010104197 Expired - Lifetime EP1129976B1 (fr) 2000-03-01 2001-02-21 Paquet de fil textile élastique et proçédé de fonctionnement d'un bobinoir pour fils textiles élastiques

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EP (1) EP1129976B1 (fr)
JP (1) JP4085548B2 (fr)
DE (1) DE60120253T2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH709606A1 (de) * 2014-05-08 2015-11-13 Rieter Ag Maschf Verfahren zum Betrieb einer Textilmaschine, die der Herstellung von Vorgarn dient, sowie Textilmaschine.
KR20230145256A (ko) * 2017-06-29 2023-10-17 도레이 오페론텍스 가부시키가이샤 탄성사 권사체 패키지
CN112794159B (zh) * 2020-12-27 2023-11-14 中山市电力工程有限公司 一种用于屋内电线走线的快速铺线装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2751499B2 (ja) * 1989-12-18 1998-05-18 村田機械株式会社 テールエンドの糸処理方法
US5393002A (en) * 1990-07-21 1995-02-28 Schubert & Salzer Maschinenfabrik Ag Process and device for the constitution of a yarn end reserve winding on yarn packages of a textile machine
JP2917947B2 (ja) * 1996-12-16 1999-07-12 村田機械株式会社 弾性糸用紡糸巻取機とその糸切換え方法
JP3698873B2 (ja) * 1997-10-03 2005-09-21 ナブテスコ株式会社 糸条パッケージの形成方法および形成装置
JPH11193183A (ja) * 1997-12-29 1999-07-21 Murata Mach Ltd 弾性糸用紡糸巻取機及び弾性糸パッケージ

Also Published As

Publication number Publication date
JP2001240309A (ja) 2001-09-04
EP1129976A2 (fr) 2001-09-05
JP4085548B2 (ja) 2008-05-14
DE60120253D1 (de) 2006-07-20
DE60120253T2 (de) 2007-04-26
EP1129976A3 (fr) 2002-11-13

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