EP3650381B1 - Anordnung zur aufnahme von gerissenem garn für eine ringspinnmaschine - Google Patents

Anordnung zur aufnahme von gerissenem garn für eine ringspinnmaschine Download PDF

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Publication number
EP3650381B1
EP3650381B1 EP19202627.6A EP19202627A EP3650381B1 EP 3650381 B1 EP3650381 B1 EP 3650381B1 EP 19202627 A EP19202627 A EP 19202627A EP 3650381 B1 EP3650381 B1 EP 3650381B1
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EP
European Patent Office
Prior art keywords
cop
arrangement
auto
gripping
piecing
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Active
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EP19202627.6A
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English (en)
French (fr)
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EP3650381A1 (de
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
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Lakshmi Machine Works Ltd
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Publication date
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Publication of EP3650381A1 publication Critical patent/EP3650381A1/de
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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
    • 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
    • B65H67/085—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement end-finding at the take-up package, e.g. by suction and reverse package rotation
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/005—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving
    • 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 yarn picking arrangement for textile machines.
  • the invention relates to broken yarn picking arrangement for an automatic yarn piecing unit in ring spinning machines.
  • the invention relates to an arrangement to pick the broken yarn end which is entangled in the cop to enable automatic piecing operation in textile ring spinning machines.
  • the cotton In textile spinning mills, the cotton is converted into yarn through a series of machines.
  • the ring spinning machines are crucial machines as the resultant yarn is produced in it.
  • Yarn breakages are frequent occurrences in said ring spinning machines which is a major concern to be addressed then and there.
  • Yarn breakage has to be continuously monitored and broken yarn has to be pieced manually then and there by the workers.
  • the yarn breakage phenomenon happens because of many parameters of yarn and spinning machine and the same is unavoidable.
  • the spinning machines in mill sites are long and manual workers continuously monitors the yarn breakages and perform manual piecing of broken yarns round the clock walking along the pathway along the aisle of the ring frames.
  • the workers walk along the machine frames which normally consists of more than 1600 spindles and about 75 meters long for a single spinning machine. Likewise many spinning machines are available depending upon the mill setup. After piecing the broken yarn manually, yarn spinning sequence will be restarted then and there to avoid production downtime and yarn wastage.
  • the automatic piecing unit is a movable unit in vehicle form with wheels / rails / guides.
  • the said piecing unit stops in front of the respective spindle position which require piecing assistance.
  • the piecing unit in general moves longitudinally over the machine frame aisles.
  • the piecing vehicle stops in front of the spindle and then the broken yarn end which is available in the spinning cop has to be found and picked.
  • the broken yarn gets entangled in the cop and it is not visible to naked eye. Also it is very difficult for the workers / automatic piecing unit to find and pick the entangled broken yarn end from the cop to perform subsequent piecing operation.
  • US 3 688 486 A discloses an auto piecing unit for piecing broken yarns on a cop of a ring spinning machine, the auto piecing unit comprising a motor, a gripping arrangement connected to a mounting means for holding said cop, the gripping arrangement moves downwards, grips and lifts the cop upwards, after lifting the cop, the cop is rotated in a direction opposite to a normal winding direction by the motor, a scribing arrangement connected to a drive element for performing at least one of linear movement and/or sideways movement during said reverse rotation of the cop, thereby scribing the cop, for loosening and/or disentangling a broken yarn wound over the cop, and a suction arrangement positioned next to the cop to suck the broken yarn for a piecing operation.
  • Said document also discloses a method of piecing broken yarns on a cop of a ring spinning machine, the method comprising the steps of: stopping the rotation of the broken yarn spindle by a breaking means, positioning a gripping arrangement above said cop wound with a broken yarn, ripping the cop externally using the gripping arrangement and lifting the cop, rotating the cop in a direction opposite to a normal winding direction using a motor, moving a scribing arrangement in at least one of linear and/or sideways movement towards the cop, thereby scribing the cop, to loosen/disentangle the broken yarn end, sucking the broken yarn from the cop for performing the piecing operation, and placing the cop back on the spindle.
  • the present invention provides an improved arrangement for picking the broken yarn end which is entangled in the spinning cop to enable automatic piecing in ring spinning machines.
  • the main object of the present invention is to provide an improved auto piecing unit for piecing broken yarns in a cop of a ring spinning machine.
  • Another object of the present invention is to provide an improved method of piecing broken yarns on a cop of a ring spinning machine.
  • the present invention provides an auto piecing unit according to claim 1 and a method according to claim 11.
  • a sequence of steps performed for picking the entangled broken yarn end is disclosed.
  • the gripping arrangement (2) moves forward through suitable drive means from the auto piecing unit (1).
  • the auto piecing unit (1) applies brake to a broken yarn spindle through suitable braking means. The respective spindle rotation is thereby stopped.
  • the gripping arrangement (2) then positions above the cop (5) having the broken yarn. Then the gripping arrangement (2) moves downwards and picks the cop (5) by internally gripping the cop (5).
  • the cop (5) can also be gripped externally. Gripping force is provided by suitable pressure means from the auto piecing unit (1). Then the gripping arrangement (2) lifts the cop (5) upwards.
  • the cop (5) Upon being lifted, the cop (5) is rotated in a reverse direction from that of a normal winding direction through a motor (9), preferably a stepper motor or a servo motor.
  • the gripping arrangement (2) is moved vertically downwards and upwards through suitable drive means from the auto piecing unit (1).
  • the auto piecing unit (1) is provided with a gripping arrangement (2) that is present in the form of a vertical pipe mounted in the auto piecing unit (1) through mounting means (3) present in the form of a bracket.
  • the gripping arrangement (2) comprises a pneumatic inner gripper for gripping the cup (5) internally.
  • the other end of the mounting means (3) is provided with a suction arrangement (4).
  • the suction arrangement (4) is in the form of a bell shaped mouth so as to surround the cop (5).
  • the gripping arrangement (2) and suction arrangement (4) are capable of rotating / indexing in the range of 180 to 270 degrees, preferably 180 degrees, through an indexing arrangement (6), preferably a rotary actuator.
  • the indexing arrangement (6) can also be a pneumatic, electric, hydraulic, linear actuator, and the like.
  • a scribing arrangement (7) is provided in the auto piecing unit (1) which is capable of moving forward and/or sideways to brush or scribe the cop (5) having the broken yarn, to loosen and disentangle the broken yarn end.
  • the scribing arrangement (7) includes bristles, Velcro, sponge, scriber, finger like part, or needle.
  • the scribing arrangement (7) is mounted in the auto piecing unit (1) and is connected to a drive element (8).
  • the drive element (8) is a linear/ rotary drive element that operates using either of a pneumatic cylinder, hydraulic cylinder, screw rod, or the like.
  • the scribing arrangement (7) provided in the auto piecing unit (1) moves forward and/or sideways of the cop (5) through the drive element (8).
  • the front portion of the scribing arrangement (7) is provided with bristles, Velcro, sponge, scriber, finger like part, or needle for brushing or scribing the broken yarn wound on the cop (5) so that entangled yarn is loosened and disentangled.
  • the gripping arrangement (2) is relieved with the gripping force so that it leaves the cop (5) in the spindle.
  • the gripping arrangement (2) is rotated 180 degrees through the indexing arrangement (6) so that the suction arrangement (4) connected to other end of the mounting means (3) positions above the cop (5). Then suction force provided to the suction arrangement (4) assists in picking the disentangled broken yarn end easily and is sucked upwards inside a bell shaped mouth of the suction arrangement (4) for enabling subsequent piecing operation.
  • one element may be designed as multiple elements or that multiple elements may be designed as one element.
  • an element shown as an internal component of one element may be implemented as an external component in another, and vice versa.
  • Nonlimiting and non-exhaustive embodiments are described with reference to the following drawings.
  • the components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating principles.
  • an automatic piecing unit (1) of the present invention is shown.
  • the automatic piecing unit (1) is used for piecing broken yarns in a ring spinning machine.
  • the automatic piecing unit (1) moves longitudinally along the aisle of the ring spinning machine.
  • the ring spinning machine is capable of winding yarn onto a bobbin mounted to a spinning spindle, so called a cop (5).
  • a cop (5) When yarn breakage occurs in a spinning sequence, thread of a broken yarn may get entangled in the cop (5) that may be spinning. To enable yarn piecing, an entangled yarn end has to be picked from the cop (5).
  • the auto piecing unit (1) is provided with a gripping arrangement (2).
  • the gripping arrangement (2) is in the form of a vertical pipe mounted in the auto piecing unit (1) through mounting means (3) present in the form of a bracket.
  • the gripping arrangement (2) grips and lifts the cop (5).
  • the gripping arrangement (2) may grip the cop (5) either internally or externally, preferably internally.
  • the gripping arrangement (2) comprises a pneumatic inner gripper for gripping the cop (5) internally.
  • the pneumatic inner gripper includes an elastic means such as diaphragm type and can also be of electric, hydraulic, or solenoid type.
  • Other end of the mounting means (3) is provided with a suction arrangement (4).
  • the gripping arrangement (2) and the suction arrangement (4) are illustrated and described to be present on a single element of the auto piecing unit (1) i.e. the mounting means (3).
  • the suction arrangement (4) is in the form of a bell shaped mouth so as to surround the cop (5).
  • the gripping arrangement (2) and the suction arrangement (4) are capable of rotating in the range of 180 to 270 degrees, preferably up to 180 degrees through an indexing arrangement (6), preferably a rotary actuator.
  • a scribing arrangement (7) is provided in the auto piecing unit (1) which is capable of moving forward and/or sideways to scribe the cop (5) having the broken yarn, to loosen and disentangle an end of the broken yarn.
  • the scribing arrangement (7) could also be referred as a brushing arrangement (7) capable of brushing the cop (5) having the broken yarn.
  • the scribing arrangement (7) includes bristles, Velcro, sponge, scriber, finger like part, or needle.
  • the said brushing / scribing arrangement (7) is mounted in the auto piecing unit (1) and is driven front and back by a drive element (8) that could be a linear drive element. Further, the drive element (8) could be a rotary drive element.
  • the drive element (8) may operate using a pneumatic cylinder, a hydraulic cylinder, rotary cylinder, a screw rod, or the like.
  • a sequence for picking an entangled end of the broken yarn is provided henceforth.
  • the gripping arrangement (2) moves forward through suitable drive means from the auto piecing unit (1).
  • the auto piecing unit (1) applies brake to the broken yarn's spindle through suitable braking means. The respective spindle rotation is thereby stopped.
  • the gripping arrangement (2) then positions above the cop (5) having the broken yarn. Then the gripping arrangement (2) moves downwards and picks the cop (5) having the broken yarn by internally gripping the cop (5).
  • the cop (5) can also be gripped externally. Gripping force applied to grip the cop (5) is provided by suitable pressure means from the auto piecing unit (1). Then the gripping arrangement (2) along with the cop (5) moves upwards.
  • the cop (5) Upon being lifted, the cop (5) is rotated in a reverse direction from that of a normal winding direction through the gripping arrangement (2) provided with a motor (9), preferably a stepper motor or a servo motor.
  • the gripping arrangement (2) is moved vertically downwards and upwards through suitable drive means from the auto piecing unit (1).
  • the scribing arrangement (7) provided in the auto piecing unit (1) moves forward and/or sideways of the cop (5) through the drive element (8).
  • a front portion of the scribing arrangement (7) is provided with bristles, Velcro, sponge, scriber, finger like part, or needle for brushing or scribing the broken yarn cop (5) so that the entangled yarn is loosened and disentangled.
  • the gripping arrangement (2) is relieved with the gripping force so that it leaves the cop (5) on the spindle.
  • the above actions result in loosening and disentangling of the entangled end of the broken yarn from the cop (5).
  • the above arrangement according to the invention is suitable for disentangling entangled yarn ends in other textile machines like autoconer and manual piecing operation in ring spinning machines also.
  • the gripping arrangement (2) is rotated to 180 degrees through the indexing arrangement (6) so that the suction arrangement (4) in the other end of the mounting means (3) positions above the cop (5) having the broken yarn.
  • suction force provided to the suction arrangement (4) assists in picking a disentangled broken yarn end easily and sucking the disentangled broken yarn end upwards inside the bell shaped mouth of the suction arrangement (4) for enabling subsequent piecing operation in the drafting zone.
  • the above described auto piecing unit (1) for ring spinning machine frame provides an effective solution for picking of broken yarn ends which are entangled in the cops, in an efficient and effective manner.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (11)

  1. Automatische Anspinneinheit (1) zum Anspinnen von gerissenem Garn auf einen Kops (5) einer Ringspinnmaschine, wobei die automatische Anspinneinheit Folgendes umfasst:
    einen Motor (9);
    eine Greifanordnung (2), verbunden mit einem Halterungsmittel (3) zum Halten des Kopses (5), wobei die Greifanordnung (2) nach unten bewegbar ist, zum Ergreifen und Anheben des Kopses (5) nach oben, wobei, nach dem Anheben des Kopses (5), der Kops (5) in eine Richtung entgegengesetzt einer normalen Wicklungsrichtung durch den Motor (9) bewegbar ist;
    eine Anreißanordnung (7), verbunden mit einem Antriebselement (8) zum Durchführen zumindest einer aus einer linearen Bewegung und/oder einer Seitwärtsbewegung während der umgekehrten Rotation des Kopses (5), dadurch den Kops (5) anreißend, zum Lockern und/oder Entwirren von gerissenem Garn, das um den Kops (5) gewickelt ist;
    eine Sauganordnung (4) zum Ansaugen des gerissenen Garns für eine Anspinnoperation, wenn über dem Kops (5) positioniert; wobei die automatische Anspinneinheit (1) dadurch gekennzeichnet ist, dass sie eine Indexieranordnung (6) zum Drehen der Greifanordnung (2) bis 180 Grad umfasst, sodass die Sauganordnung (4), die mit dem anderen Ende des Halterungsmittels (3) verbunden ist, über dem Kops (5) mit dem gerissenen Garn positioniert ist.
  2. Automatische Anspinneinheit (1) nach Anspruch 1, wobei die Greifanordnung (2) den Kops (5) entweder von innen oder außen ergreift und den Kops (5) anhebt.
  3. Automatische Anspinneinheit (1) nach Anspruch 1, wobei die Greifanordnung (2) einen pneumatischen Innengreifer zum Ergreifen des Kopses (5) von innen umfasst.
  4. Automatische Anspinneinheit (1) nach Anspruch 1, wobei die Greifanordnung (2) in der Lage ist, sich vertikal nach oben und unten zu bewegen.
  5. Automatische Anspinneinheit (1) nach Anspruch 1, wobei die Greifanordnung (2) den Kops (5) auf einer Spindel der Ringspinnmaschine platziert durch Entlasten der Greifkraft, nachdem das gerissene Garnende gelockert/entwirrt ist.
  6. Automatische Anspinneinheit (1) nach Anspruch 1, wobei die Greifanordnung (2) ein vertikales Rohr umfasst, das durch das Halterungsmittel (3) in der automatischen Anspinneinheit (1) montiert ist.
  7. Automatische Anspinneinheit (1) nach Anspruch 1, wobei die Indexieranordnung (6) ein Drehaktuator ist.
  8. Automatische Anspinneinheit (1) nach Anspruch 1, wobei die Greifanordnung (2) und die Sauganordnung (4) in der Lage sind, sich im Bereich von 180 bis 270 Grad zu drehen.
  9. Automatische Anspinneinheit (1) nach Anspruch 1, wobei die Anreißanordnung (7) zumindest eines aus Borsten, Klett, Schwamm, Reißnadel, fingerartigem Teil oder Nadel umfasst.
  10. Automatische Anspinneinheit (1) nach Anspruch 1, wobei das Antriebselement (8) der Anreißanordnung (7) ein lineares oder rotatorisches Antriebselement ist, das unter Verwendung von einem aus einem pneumatischen Zylinder, einem hydraulischen Zylinder, einem Drehkolbenzylinder und einer Schraubenwelle arbeitet.
  11. Verfahren zum Anspinnen von gerissenem Garn auf einem Kops (5) einer Ringspinnmaschine, wobei das Verfahren die folgenden Schritte umfasst:
    Stoppen der Rotation der Spindel mit gerissenem Garn durch ein Bremsmittel;
    Positionieren einer Greifanordnung (2) über dem Kops (5) auf den das gerissene Garn gewickelt ist, und Ergreifen des Kopses (5), entweder von innen oder von außen, unter Verwendung der Greifanordnung (2) und Anheben des Kopses (5) ;
    Rotieren des Kopses (5) in eine Richtung entgegengesetzt einer normalen Wicklungsrichtung unter Verwendung eines Motors (9);
    Bewegen einer Anreißanordnung (7) in zumindest einer aus einer linearen und/oder Seitwärtsbewegung in Richtung des Kopses (5), dadurch den Kops (5) anreißend, um das gerissene Garnende zu lockern/entwirren;
    Platzieren des Kopses (5) auf der Spindel; und
    Positionieren einer Sauganordnung (4) über dem Kops (5) zum Ansaugen des gerissenen Garns für eine Anspinnoperation, durch Drehen der Greifanordnung (2) bis 180 Grad, sodass die Sauganordnung (4), die mit dem anderen Ende des Halterungsmittels (3) verbunden ist, über dem Kops (5) mit dem gerissenen Garn positioniert ist.
EP19202627.6A 2018-11-08 2019-10-11 Anordnung zur aufnahme von gerissenem garn für eine ringspinnmaschine Active EP3650381B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201841042122 2018-11-08

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EP3650381A1 EP3650381A1 (de) 2020-05-13
EP3650381B1 true EP3650381B1 (de) 2024-06-05

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Families Citing this family (2)

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CN114687027B (zh) * 2022-03-31 2023-05-23 杭州君辰机器人有限公司 寻线装置及具有其的寻线设备
CN114803713A (zh) * 2022-04-21 2022-07-29 张家港扬子纺纱有限公司 一种提高络筒准备站成功率的装置

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CN111153284A (zh) 2020-05-15
EP3650381A1 (de) 2020-05-13
CN111153284B (zh) 2022-09-06

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