EP3567142B1 - Agencement d'insertion de fil pour une machine à filer à anneaux - Google Patents

Agencement d'insertion de fil pour une machine à filer à anneaux Download PDF

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Publication number
EP3567142B1
EP3567142B1 EP19170803.1A EP19170803A EP3567142B1 EP 3567142 B1 EP3567142 B1 EP 3567142B1 EP 19170803 A EP19170803 A EP 19170803A EP 3567142 B1 EP3567142 B1 EP 3567142B1
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EP
European Patent Office
Prior art keywords
yarn
ring
gripping arm
arm
rocker arm
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.)
Active
Application number
EP19170803.1A
Other languages
German (de)
English (en)
Other versions
EP3567142A1 (fr
Inventor
Rajasekaran SRINIVASAN
Pasupathy JEGANATHAN
Kumar ARULANANDAM THILIP
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.)
Lakshmi Machine Works Ltd
Original Assignee
Lakshmi Machine Works 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.)
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Publication date
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Publication of EP3567142A1 publication Critical patent/EP3567142A1/fr
Application granted granted Critical
Publication of EP3567142B1 publication Critical patent/EP3567142B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/013—Carriages travelling along the machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • 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 textile ring spinning machines.
  • the present invention relates to an automatic piecing arrangement for broken yarn ends in textile ring spinning machines.
  • the invention deals with an improved yarn inserting arrangement for an automatic piecing device of textile ring spinning machines.
  • yarn breakage in ring spinning machines is a frequent problem that requires continuous attention of the work force/labours.
  • Yarn breakage now-a-days remains a major disadvantage in ring spinning machines which has forced huge number of workers/manual labours to continuously monitor the ring spinning machines at both the sides throughout the length of the machine frame, which is normally more than 1600 spindles.
  • the broken yarns have to be pieced manually, and the yarn spinning sequence has to be restarted then and there after yarn breakage in order to avoid wastage of yarn.
  • the stamina and health of the workers also gets affected due to continuous walking along the long ring spinning frames to manually piece the broken yarn ends throughout the day.
  • Automatic piecing devices are provided as an improvement towards the conventional method of manual piecing.
  • the automatic piecing devices involve a robot or worker in a piecing vehicle or piecing device which has in-built drive units, sensing units, and support units which are normally required for automatic piecing arrangements.
  • Such automatic piecing devices are required to be advanced towards the ring spinning machine for piecing operation, and for returning back after completing the piecing operation.
  • the existing piecing arrangements are not successful since the piecing unit does not have any automatic means for successfully inserting the yarn to be pieced into a ring traveler of the ring spinning machine.
  • DE 20 09 095 A1 discloses a yarn inserting arrangement for an automatic piecing unit of a ring spinning machine.
  • an automatic apparatus for joining a fleece delivered from a draft means of a spinning unit with the free end of a broken yarn unwound from a spool upon which a spinning yarn is broken comprises means for unwinding the free end of broken yarn from said spool; means for threading said unwound yarn into a traveller positioned upon a ring of said spinning unit; and means for joining said free end of broken yarn unwound from said spool with a fleece delivered from said draft means related to said spinning unit.
  • An aspect of the present invention relates to a yarn inserting arrangement according to claim 1.
  • the gripping arm includes a retractable needle member for fixedly gripping the broken yarn.
  • the gripping arm is adapted to oscillate substantially horizontally by an actuating means.
  • the rocker arm is adapted to oscillate substantially vertically by an actuating means.
  • the rocker arm is adapted to oscillate substantially horizontally by another actuating means.
  • any or a combination of the gripping arm and the rocker arm are adapted to oscillate substantially vertically or substantially horizontally by at least an actuating means.
  • the actuating means is any of the pneumatic, hydraulic or electric.
  • the traveler is adapted to rotate by means of a blowing means to allow insertion of the broken yarn inside the traveler.
  • the blowing means includes an air nozzle pointed towards the ring on the ring rail so as to blow air to rotate the traveler during yarn inserting.
  • the broken yarn in the position in which the gripping arm reaches the proximal position of the ring rail, the broken yarn forms a V-shape between the suction tube, the gripping arm and a balloon control ring surrounding the cop.
  • the broken yarn forms a V-shape between the balloon control ring, the rocker arm and the gripping arm, after the broken yarn present in between the balloon control ring and the gripping arm is pulled by the rocker arm.
  • the gripping arm and the rocker arm are moved towards the ring of ring rail through an actuating means for insertion of the broken yarn into the rotatable traveler.
  • the broken yarn is released from the gripping arm and the rocker arm after the yarn is inserted inside the traveler.
  • the rocker arm pulls the broken yarn in between the balloon control ring and gripping arm to allow the broken yarn hooked in the gripping arm and the rocker arm to be substantially tangential to the ring of the ring rail in between the rocker arm and the gripping arm for insertion of the broken yarn into a rotatable traveler positioned in the ring of ring rail.
  • any or a combination of the gripping arm and the rocker arm are adapted to oscillate vertically or horizontally with the help of at least one actuating means, the at least one actuating means being any of pneumatic, hydraulic or electric.
  • the traveler is adapted to rotate by means of a blowing means to allow insertion of the broken yarn inside the traveler.
  • an automatic piecing unit is provided to assist yarn piecing operation during yarn breakage incidents in ring spinning machines (also referred to as "textile ring spinning machines” hereinafter).
  • ring spinning machines also referred to as "textile ring spinning machines” hereinafter.
  • broken yarn end from a cop is lifted upwards by blowing means.
  • the lifted yarn end is held inside a suction tube of the piecing unit positioned above the cop.
  • the yarn end held by the suction tube is to be inserted inside a ring traveler positioned in a ring of the textile ring spinning machine before piecing the yarn end with delivery yarn from the drafting zone.
  • the automatic piecing unit is provided with a yarn inserting arrangement having a rocker arm and a gripping arm placed in a common base.
  • the rocker and gripping arms insert the yarn end into the traveler through actuating means, such as but not limited to, a hydraulic or pneumatic or electric actuator or the like. After inserting the yarn end into the traveler, the yarn held in the suction tube is pieced with delivery yarn from the drafting zone.
  • Figure 1 illustrates an exemplary isometric view representation of a yarn inserting arrangement (2) of an automatic piecing unit (1) for a ring spinning machine, in accordance with an embodiment of the present invention.
  • the yarn inserting arrangement (2) of the automatic piecing unit (1) includes a gripping arm (3), a rocker arm (4), actuating means (5) for moving a set of components of the yarn inserting arrangement (2) forward and backward, a gripper horizontal actuating means (6) and rocker vertical and horizontal actuating means (7a, 7b).
  • the components of the yarn inserting arrangement (2) are mounted in a common platform of the automatic piecing unit (1).
  • FIG. 2 where an exemplary side view representation of the yarn inserting arrangement (2) along with spindle and cop of the ring spinning machine is shown.
  • the yarn inserting arrangement (2) may be moved towards the cop (9) of the ring spinning machine through the actuating means (5).
  • the rocker arm (4) is also at its home position.
  • the gripping arm (3) is connected to the gripper horizontal actuating means (6) for enabling horizontal movement of the gripping arm (3) after reaching the position above the cop (9).
  • end of the broken yarn (10) is lifted from the cop (9) and is held inside a suction tube (8) positioned above the cop (9).
  • the suction tube (8) may move upwards near drafting zone of the textile ring spinning machine such that broken yarn (10) is passed into a lappet hook (not shown).
  • the gripping arm (3) may move towards the position above the cop (9) and perform horizontal oscillatory movement through actuating means (6) to hook and pull the yarn (10) through hook like arrangement provided at front portion of the gripping arm (3).
  • the gripping arm (3) upon actuation by the gripper horizontal actuating means (6), the gripping arm (3) performs the horizontal oscillatory motion to pull the broken yarn (10) below the lappet hook position/above the cop (9) position.
  • the broken yarn (10) is dragged by a hook like arrangement provided at front portion of the gripping arm (3).
  • the gripping arm (3) is provided with a retractable needle member (15) at its front portion.
  • the needle member (15) opens and closes by actuating means (not shown).
  • the needle member closes and grips the broken yarn (10) such that the broken yarn (10) is now unable to come out of the hook like arrangement.
  • the gripping arm (3) along with yarn inserting arrangement (2) starts moving downwards.
  • the gripping arm (3) holds the broken yarn (10) such that the pulled broken yarn (10) moves downstream and reaches the proximal position of the ring rail (11) thereby forming V-shape yarn between the suction tube (8), the gripping arm (3) and a Balloon Control ring (14) surrounding the cop (9).
  • vertical movement of the rocker arm (4) is actuated by a rotary/linear actuating means (7a).
  • the rocker arm (4) performs vertical oscillatory movement from top to bottom thereby pulling down the broken yarn (10) present in between the Balloon control ring (14) surrounding the cop (9) and the gripping arm (3).
  • horizontal movement of the rocker arm (4) may be actuated by another rotary/linear actuating means (7b).
  • the rocker arm (4) performs horizontal oscillatory movement thereby again pulling sideways the broken yarn (10) present in between the Balloon control ring (14) surrounding the cop (9) and the gripping arm (3).
  • the actuating means (7a, 7b) may be selected from any or a combination of a pneumatic actuator, a hydraulic actuator, electric actuator and an actuating means having any other kind of pressure developing means.
  • the yarn inserting arrangement (2) as a unit is moved forward towards the ring of the ring rail (11) through actuating means (5).
  • the broken yarn (10) hooked in the gripping arm (3) and the rocker arm (4) is tangential to a ring of the ring rail (11) in between the rocker arm (4) and the gripping arm (3) and is ready for insertion into the traveler (12) positioned in the ring.
  • the traveler (12) may reach front portion of the ring through a blowing means (16) mounted in the piecing unit.
  • the blowing means (16) comprises an air nozzle pointed towards the ring so as to blow air from air source.
  • the blowing means (16) blows air towards the ring so that the traveler (12) rotates clockwise around the ring. While rotating clockwise, the broken yarn (10) which is tangential to the ring between the rocker arm (4) and the gripping arm (3) is automatically inserted inside the traveler (12).
  • the yarn inserting arrangement (2) as a unit is retracted backwards.
  • the rocker arm (4) and the gripping arm (3) are moved to their respective home positions.
  • the needle member (15) of the gripping arm (3) is retracted by the actuating means (not shown), and the yarn is released from the gripping arm (3) and from the rocker arm (4).
  • Figure 4 illustrates an exemplary side view representation of the yarn inserting arrangement (2) of the ring spinning machine after successful insertion of the yarn into the traveler, in accordance with an embodiment of the present invention.
  • the broken yarn (10) is inserted into the traveler (12) and is ready for subsequent piecing operation with the yarn/fibre being delivered from drafting zone of the ring spinning machine (13).
  • the broken yarn (10) is successfully inserted inside the traveler (12), and thereafter, the broken yarn (10) held in the suction tube (8) is pieced with the delivery yarn from the drafting zone through piecing arrangement.
  • Figure 5 illustrates an exemplary flowchart representation of a method of piecing broken yarn (9) in the ring spinning machine in accordance with an embodiment of the present invention.
  • the method of piecing broken yarn (10) in a ring spinning machine includes at step (502), lifting an end of a broken yarn (10) from a cop (9) to a suction tube (8) positioned above the cop (9).
  • the suction tube (8) may move upwards near drafting zone of the ring spinning machine such that broken yarn (10) is passed into a lappet hook (not shown).
  • the method further includes at step (504), pulling, by a gripping arm, the broken yarn in between the suction tube and the cop, and at step (506), pulling, by a rocker arm, the broken yarn after the gripping arm moves downwards to a position proximal to a ring position of a ring rail of the ring spinning machine.
  • the gripping arm (3) may move towards the position above the cop (9) and perform horizontal oscillatory movement through actuating means (6) to hook and pull the yarn (10) through hook like arrangement provided at front portion of the gripping arm (3). Thereafter, the gripping arm (3) starts moving downwards.
  • the rocker arm (4) pulls the broken yarn (10) in between the balloon control ring (14) surrounding the cop (9) and the gripping arm (3) to allow the broken yarn (10) hooked in the gripping arm (3) and the rocker arm (4) to be tangential to the ring of the ring rail (11) in between the rocker arm (4) and the gripping arm (3) for insertion of the broken yarn (10) into a rotatable traveler (12) positioned in the ring of the ring rail (11).
  • the method further includes a step of piecing the broken yarn (10) with yarn being delivered from a drafting zone of the ring spinning machine (13).

Claims (11)

  1. Un dispositif d'insertion de fil (2) pour un élément de rattachement automatique d'un métier à filer à anneaux, et ce dispositif d'insertion de fil (2) se compose des éléments suivants ::
    un tube d'aspiration (8) adapté pour recevoir un embout relevé d'un fil cassé (10) depuis une canette (9) du métier à filer à anneaux, et ce tube d'aspiration (8) est configuré pour venir se placer au-dessus de la canette (9)
    un bras de saisie (3) adapté pour tirer sur le fil cassé (10) et l'amener entre le tube d'aspiration (8) et la canette (9), et ce bras de saisie (3) est configuré pour se déplacer vers le bas, jusqu'à un emplacement à une proximité immédiate d'un rail à anneau (11) du métier à tisser à anneaux, et
    un culbuteur (4) adapté pour tirer sur le fil cassé (10) après que le bras de saisie (3) soit descendu jusqu'à l'emplacement à proximité immédiate de la position occupée par le rail à anneau (11)
    et ce bras de saisie (3) est configuré de telle sorte que lorsque le bras de saisie (3) détenant le fil tiré (10), après sa descente, occupe un emplacement à proximité immédiate de l'anneau du rail à anneau (11), le fil cassé(10) prend un profil de forme trapézoïdale entre le tube d'aspiration (8), le bras de saisie (3) et un anneau de commande en forme de ballon (14) du métier à tisser à anneaux entourant la canette (9) et
    le bras de saisie (3) et le culbuteur (4) sont configurés de telle sorte que lorsque le culbuteur (4) tire sur le fil cassé (10) qui se trouve entre l'anneau de commande en forme de ballon (14) entourant la canette (9) et le bras de saisie (3), ce fil cassé (10) prend un profil de forme trapézoïdale entre l'anneau de commande en forme de ballon (14), le culbuteur (4) et le bras de saisie (3), et ce fil cassé (10) vient s'accrocher dans le bras de saisie (3) et le culbuteur (4) est essentiellement tangent à l'anneau du rail à anneau (11), afin d'introduire le fil cassé (10) dans un curseur rotatif (12) implanté dans l'anneau du rail à anneau rail (11).
  2. Le dispositif d'insertion de fil (2) que décrit la revendication 1, si ce n'est que le bras de saisie (3) comporte un élément à aiguille rétractable (15) qui permet de saisir, de manière fixe, le fil cassé (10).
  3. Le dispositif d'insertion de fil (2) que décrit la revendication 1, si ce n'est que le bras de saisie (3) est adapté pour osciller, essentiellement à l'horizontale, par le biais d'un organe de manœuvre (6).
  4. Le dispositif d'insertion de fil (2) que décrit la revendication 1, si ce n'est que le culbuteur (4) est adapté pour osciller, essentiellement à la verticale, par le biais d'un organe de manœuvre (7a).
  5. Le dispositif d'insertion de fil (2) que décrit la revendication 1, si ce n'est que le culbuteur (4) est adapté pour osciller, essentiellement à l'horizontale, par le biais d'un organe de manœuvre (7b).
  6. Le dispositif d'insertion de fil (2) que décrit la revendication 1, si ce n'est qu'un bras de saisie (3) et le culbuteur (4), ou une combinaison de ces deux composants, est ou sont adaptés pour osciller à la verticale ou à l'horizontale, par le biais d'au moins un organe de manœuvre.
  7. Le dispositif d'insertion de fil (2) que décrit la revendication 6, si ce n'est que l'organe de manœuvre est d'un type pneumatique, hydraulique ou électrique.
  8. Le dispositif d'insertion de fil (2) que décrit la revendication 1, si ce n'est que le bras de saisie (3) et le culbuteur (4) se dirigent vers l'anneau du rail à anneau (11) par le biais d'un organe de manœuvre (5), afin d'insérer le fil cassé (10) dans le curseur rotatif (12).
  9. Le dispositif d'insertion de fil (2) que décrit la revendication 1, si ce n'est que le bras de saisie (3) et le culbuteur (4) sont configurés pour relâcher le fil cassé (10) après que ce fil ait été introduit dans le curseur (12).
  10. Un métier à tisser à anneaux comportant le dispositif d'insertion de fil (2) que décrit la revendication 1 et un curseur (12) adapté pour tourner par le biais d'un dispositif à soufflerie afin de permettre l'insertion du fil cassé (10) dans le curseur (12).
  11. Le métier à tisser à anneaux que décrit la revendication 10, si ce n'est que le dispositif à soufflerie comporte une buse d'air qui pointe vers l'anneau du rail à anneau (11 ) de manière à envoyer un jet d'air qui fait tourner le curseur (12) lors de l'insertion du fil.
EP19170803.1A 2018-05-10 2019-04-24 Agencement d'insertion de fil pour une machine à filer à anneaux Active EP3567142B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201841017625 2018-05-10

Publications (2)

Publication Number Publication Date
EP3567142A1 EP3567142A1 (fr) 2019-11-13
EP3567142B1 true EP3567142B1 (fr) 2022-04-20

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Application Number Title Priority Date Filing Date
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CN (1) CN110468477B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3913121A1 (fr) * 2020-05-22 2021-11-24 Lakshmi Machine Works Ltd. Appareil automatique de rattachement de fil et son procédé
EP3967798B1 (fr) * 2020-09-10 2023-11-01 Lakshmi Machine Works Ltd. Unité de rattache de fil dans une machine à filer à anneaux comprenant un dispositif d'enfilage de fil

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1304448A (fr) * 1969-02-28 1973-01-24
US3628320A (en) * 1969-08-01 1971-12-21 Maremont Corp Method and apparatus for traveler threading
DE2713624C3 (de) * 1977-03-28 1980-04-03 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Vorrichtung zum selbsttätigen Einfädeln eines Fadens in einen Läufer
EP2252730A2 (fr) * 2008-02-05 2010-11-24 Cengiz Ulusoy Système permettant de modifier les métiers à filer continus à anneaux actuels afin de fabriquer du fil compact
CN103498225B (zh) * 2013-06-09 2015-07-01 江南大学 环锭纺细纱机工作状态的监测方法及判断方法
JP2017172096A (ja) * 2016-03-21 2017-09-28 プレミア・エボルビクス・プライベイト・リミテッドＰｒｅｍｉｅｒ Ｅｖｏｌｖｉｃｓ Ｐｖｔ． Ｌｔｄ． 糸切れとスピンドル欠陥の自動検出方法とそれらを回復するためのロボット
CN107488901A (zh) * 2016-06-11 2017-12-19 普瑞米尔伊沃维克斯私人有限公司 用于在环锭纺纱机中停止给料的装置

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CN110468477B (zh) 2022-05-31
EP3567142A1 (fr) 2019-11-13

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