EP3480149A1 - Verfahren zum austausch einer gewickelten spule gegen eine leerhülse an einer spinnmaschine - Google Patents

Verfahren zum austausch einer gewickelten spule gegen eine leerhülse an einer spinnmaschine Download PDF

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Publication number
EP3480149A1
EP3480149A1 EP18202221.0A EP18202221A EP3480149A1 EP 3480149 A1 EP3480149 A1 EP 3480149A1 EP 18202221 A EP18202221 A EP 18202221A EP 3480149 A1 EP3480149 A1 EP 3480149A1
Authority
EP
European Patent Office
Prior art keywords
yarn
spinning
reserve
storage device
tube
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.)
Withdrawn
Application number
EP18202221.0A
Other languages
English (en)
French (fr)
Inventor
Jiri Sloupensky
Vitezslav Kubes
Evzen Pilar
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3480149A1 publication Critical patent/EP3480149A1/de
Withdrawn legal-status Critical Current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
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • 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
    • 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
    • B65H54/343—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails when starting winding on an empty bobbin
    • 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
    • B65H59/18—Driven rotary elements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • 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 invention relates to a method for exchanging a wound bobbin for an empty tube at a workstation of a spinning machine which is provided with a drum intermediate storage device of yarn with a rotary drum and an independently driven compensating arm arranged between a spinning unit and a winding device.
  • an intermediate storage device of yarn can be used in which the yarn is stored if the amount of yarn produced is larger than the amount being wound and from which the yarn can be consumed if the winding device needs a greater amount of yarn than is produced by the spinning unit.
  • the vacuum yarn intermediate storage device can be mounted on an attending device, as is the case, for example, in CZ280089 , or it is part of a workstation of the machine, for example in CZ304874 .
  • the vacuum yarn intermediate storage device according to CZ280089 on an attending device serves only to compensate for a yarn loop during spinning-in with the assistance of the attending device and to monitor whether the spinning-in cycle is successful.
  • CZ304874 discloses a method for producing a yarn reserve when a wound bobbin is exchanged for an empty tube at a workstation of the spinning machine, especially a semi-automatic open-end spinning machine, in which, after stopping the winding device and interrupting the yarn being spun before the winding device, the spun yarn is sucked into a vacuum doffing nozzle, after exchanging the wound bobbin for an empty tube, the spun yarn is transferred by the doffing nozzle to the winding device, where the yarn is caught by a tooth of a disc of the winding device, thereby interrupting the yarn, the free end of the yarn being sucked into the doffing nozzle, and the winding of the yarn reserve on the tube begins.
  • the doffing nozzle After transferring the doffing nozzle to the winding device, the doffing nozzle assumes a parking position in which the spun-out yarn is guided outside a traversing device of yarn, the yarn is caught and interrupted by the tooth of the disc of the winding device and a signal is sent to the control unit about the start of the yarn reserve winding, whereby during the yarn reserve winding, the yarn is guided through a rectifier arranged at the workstation and winding the yarn reserve is terminated after a pre-determined time interval by releasing the yarn from the rectifier to the traversing device.
  • the workstation is further provided with a vacuum intermediate storage device of yarn which serves to compensate for the yarn tension during spinning.
  • the doffing nozzle is another device at the workstation which increases the price of the machine and can be used only for manual exchange of a bobbin for an empty tube.
  • CZ303880 describes a drum intermediate storage device of yarn comprising a driven rotary drum with an independently driven compensating arm whose rotation is controlled according to the rotation of the drum drive in such a manner that during continuous spinning, constant torque is created at the outlet of the storage device to produce the desired yarn tension for winding the yarn on a cross-wound bobbin and during the transition from continuous spinning to transient state, the speed and torque of the compensating rotary arm are controlled at least partially independently of the rotation speed of the drum in accordance with the needs and the development of the transient state. If it is detected by a yarn quality sensor (not shown) that a yarn fault appeared in the yarn reserve on the drum, the yarn reserve can be unwound by means of the rotating arm, including situations when the drum is stationary.
  • CZ306369 discloses a rotor spinning machine and a method for resuming spinning at its workstation.
  • a drum intermediate storage device of yarn with a rotary drum and with an independently driven compensating arm constitutes a draw-off mechanism of yarn from a spinning unit.
  • the drum intermediate storage device of yarn can store on its circumference a yarn length corresponding to the maximum length of an assumed yarn defect, to the yarn length needed for subsequent spinning-in and the yarn length necessary during the termination of spinning for stopping the bobbin without a yarn break and is made according to CZ303880 .
  • a drum intermediate storage device of yarn with a rotary drum and with an independently driven compensating arm is also disclosed in EP1460015A1 and EP2216432A1 .
  • EP1460015A1 describes an air jet spinning machine with a drum intermediate storage device of yarn comprising a drum coupled with a drive and a rotating arm which is coupled to a drum from which a torque is transmitted to the arm.
  • the arm can only rotate when the drum is rotated, and only in the direction of rotation of the drum so that the arm only serves to maintain a constant tension in the yarn during winding.
  • the aim of the present invention is to further improve the use of the drum intermediate storage device and to improve the efficiency of the service operation at a workstation during the exchange of a full bobbin for an empty tube, i.e. shortening the time of the operator action, both in cases where the exchange of the bobbin for the empty tube and capturing the yarn on the tube for yarn reserve formation is performed by the operator or with the assistance of the means of the workstation or with the assistance of the attending device.
  • the aim of the invention is achieved by a method according to the invention whose principle consists in that before starting yarn reserve formation, the yarn supply in the drum intermediate storage device is increased to the length that corresponds to at least the yarn length necessary for resuming spinning-in and to a yarn length necessary for capturing on the tube and formation of at least two windings of the yarn reserve on the tube and after starting the yarn reserve formation on the tube, at least the initial windings of the yarn reserve on the tube are formed from the yarn supply in the drum intermediate storage device, the yarn reserve being withdrawn from the drum intermediate storage device by an independently driven rotary compensating arm, whereby during the formation of the initial windings of the yarn reserve the spinning-in of the spinning unit is re-started, whereby the yarn for spinning-in is supplied from the rotary drum of the intermediate storage device by means of its reversed operation.
  • the need for using auxiliary yarn for spinning-in on the empty tube is eliminated and the process of full bobbin exchange is accelerated.
  • the initial windings form at least a part of the yarn reserve, preferably the entire yarn reserve.
  • the yarn supply in the intermediate storage device is formed during the exchange of the bobbin for an empty tube, when yarn withdrawal from the intermediate storage device for winding is stopped, without stopping the spinning process.
  • Exchanging the bobbin for an empty tube and capturing the yarn on the tube for yarn reserve formation is performed by the operator or with the assistance of the means of the workstation of the machine or with the assistance of the attending device.
  • the yarn reserve in the intermediate storage device is formed before interrupting the spinning process to perform the exchange of the bobbin for an empty tube, whereby the length of the yarn reserve is sufficient at least for spinning-in and for formation of at least two initial windings on the tube.
  • yarn is unwound by means of the independently driven rotary compensating arm from the drum for yarn reserve formation and simultaneously, by the drum rotating in the counter direction, the yarn end is introduced into the spinning unit for spinning-in purposes.
  • the exchange of the bobbin for an empty tube and capturing the yarn on the tube for yarn reserve formation is performed manually, or by the means of the workstation or by the attending device.
  • Fig. 1 shows a side view of the workstation
  • Fig. 2 shows a front view of the workstation.
  • the workstation comprises a spinning unit 1 to which is supplied a sliver 2 which is transformed into yarn 3 in it.
  • the yarn 3 is withdrawn from the spinning unit 1 by means of a drum intermediate storage device 4 of yarn with a rotary drum 41 and passed on to be wound on a bobbin by an independently driven rotary compensating arm 42 according to CZ306369 .
  • On the rotary drum 41 is maintained a required number of windings of yarn 3 , which is through the independently driven rotary compensating arm 42 withdrawn to a winding device 5 of yarn, whereby the yarn is passed through a paraffining device 6 and a traversing device.
  • the yarn is wound on a bobbin 51 , which is formed on the tube 511 .
  • the tube 511 may be provided with a yarn catching means in the edge portion of the tube 511 to form yarn 3 reserve, or, if appropriate, the yarn catching means may be part of a disc of the winding arms.
  • the tube 511 is in a known manner detachably mounted in the arms 52 of the winding device 5 .
  • the tube 511 or, to be more specific, the bobbin 51 being wound on it, abuts a drive cylinder 53 of the winding device.
  • the drive of the drive cylinder 53 may be central or individual (unit).
  • the exchange of the wound bobbin 51 for an empty tube 511 is performed after obtaining a pre-determined length of the yarn package on the bobbin 51 or obtaining the desired bobbin diameter and can either take place during the operation of the spinning unit or at the stopping operation, namely in three ways: manually, with the assistance of the means of the workstation or the means of the attending device which is movable along the machine and, after stopping, to provide service operation at the workstation requesting the service.
  • the yarn reserve 3 on the rotary drum 41 of the intermediate storage device 4 is increased above the value that is maintained during normal spinning.
  • the yarn 3 length in the drum intermediate storage device 4 then before stopping spinning corresponds to at least the yarn 3 length required for restarting the spinning-in process and the yarn 3 length required for capturing the yarn 3 on the tube 511 and for the formation of at least two windings of the yarn reserve 3 , but preferably the entire yarn 3 reserve on the tube 511 .
  • the operator then exchanges the bobbin 51 for an empty tube 511 and catches the yarn 3 end passing through an independently driven rotary compensating arm 42 of the drum intermediate storage device 4 on the tube 511 , whereby the yarn 3 is guided to a device for yarn reserve formation.
  • the operator also prepares in a known manner the spinning unit 1 for spinning-in by the means of the workstation, using the yarn 3 wound on the rotary drum 41 of the drum intermediate storage device 4 , and puts the workstation into operation.
  • winding the yarn 3 reserve is started on the tube 511 and at least several initial windings of the yarn 3 reserve are wound from the yarn 3 unwound from the drum intermediate storage device 4 of yarn by means of the independently driven rotary compensating arm 42 .
  • the spinning unit 1 is spun in again, whereby the yarn 3 required for spinning-in is supplied from the rotary drum 41 of the intermediate storage device 4 by means of its reversed operation, for example according to CZ306369 .
  • the yarn reserve is formed 3 on the tube 511 , the yarn 3 is passed on in a known manner to the traversing device and winding the bobbin 51 is started.
  • the yarn 3 supply in the drum intermediate storage device 4 also increases to the values required for the spinning-in and winding of at least part of the yarn 3 reserve, whereby during the start of the stopping operation of spinning, while in addition, in the drum intermediate storage device 4 is formed a length of yarn 3 needed for controlled stopping of spinning which ensures that the yarn 3 end remains in the spinning unit 1 .
  • the yarn Prior to the exchange of the bobbin 51 , the yarn is interrupted before the winding device 5 by the means 7 for the yarn 3 reserve formation and the yarn 3 end from the drum intermediate storage device 4 is caught by the means 7 for yarn reserve formation 3 and after the exchange of the bobbin 51 is brought to the tube 511 , on which it is captured before or during the start of the winding of the yarn 3 reserve on the bobbin 511 after starting the operation of the workstation for the resumption of spinning and winding.
  • Another possibility is that during the exchange of the bobbin 51 for an empty tube 511 spinning is not interrupted, only the yarn 3 withdrawal from the intermediate storage device 4 for winding is stopped, the yarn 3 being produced during this period is deposited in the intermediate storage device 4 on its rotary drum 41 .
  • the yarn 3 is interrupted by the means 7 for yarn reserve formation, or by another means intended for this purpose, and the yarn 3 end from the drum storage device 4 is captured by the means 7 for yarn reserve formation.
  • the yarn 3 end is brought to the tube 511 and captured on the tube 511 or on the capturing disc of the winding device 5 , and then follows the start of the winding of the yarn reserve 3 which is withdrawn from the intermediate storage device 4 through the independently driven rotary compensating arm 42 .
  • the exchange of the wound bobbin 51 for a tube 511 by means of a known unillustrated attending device may also take place when the spinning is stopped, or only when stopping the yarn 3 withdrawal from the intermediate storage device 4 , as has been described above.
  • the consumption of the yarn reserve from the storage device is controlled by the spinning speed.
  • the consumption of the yarn reserve from the storage device can be controlled by changing the winding speed and/or by changing the spinning speed.
  • the yarn 3 from the drum intermediate storage device 4 forms several initial windings on the bobbin 51 .
  • the invention is intended for spinning machines provided with a drum intermediate storage device of yarn with a rotary drum and an independently driven compensating arm on which using the invention enables to accelerate the servicing of the workstation during the exchange of the wound bobbin for an empty tube to eliminate the need for the use of auxiliary yarn to resume the spinning-in of the spinning unit after the bobbin is exchanged with an empty tube.
EP18202221.0A 2017-10-26 2018-10-24 Verfahren zum austausch einer gewickelten spule gegen eine leerhülse an einer spinnmaschine Withdrawn EP3480149A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2017-680A CZ2017680A3 (cs) 2017-10-26 2017-10-26 Způsob výměny navinuté cívky za prázdnou dutinku na dopřádacím stroji

Publications (1)

Publication Number Publication Date
EP3480149A1 true EP3480149A1 (de) 2019-05-08

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EP18202221.0A Withdrawn EP3480149A1 (de) 2017-10-26 2018-10-24 Verfahren zum austausch einer gewickelten spule gegen eine leerhülse an einer spinnmaschine

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EP (1) EP3480149A1 (de)
CN (1) CN109704147A (de)
CZ (1) CZ2017680A3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113684594A (zh) * 2021-08-17 2021-11-23 广东邦诚纺织科技有限公司 经完经断即时检测自停装置和圆织机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111172669A (zh) * 2020-02-26 2020-05-19 南通市金山纺织有限公司 滚动式导纱补偿装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2684827A2 (de) * 2012-07-12 2014-01-15 Rieter CZ s.r.o. Trommelzwischenlagerung von Garn an einer Betriebseinheit einer Textilmaschine und Steuerungsverfahren dafür
DE102016109216A1 (de) * 2015-05-20 2016-11-24 Rieter Cz S.R.O. Rotorspinnmaschine und Verfahren zur Erneuerung des Spinnvorgangs auf der Arbeitsstelle einer Rotorspinnmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2684827A2 (de) * 2012-07-12 2014-01-15 Rieter CZ s.r.o. Trommelzwischenlagerung von Garn an einer Betriebseinheit einer Textilmaschine und Steuerungsverfahren dafür
DE102016109216A1 (de) * 2015-05-20 2016-11-24 Rieter Cz S.R.O. Rotorspinnmaschine und Verfahren zur Erneuerung des Spinnvorgangs auf der Arbeitsstelle einer Rotorspinnmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113684594A (zh) * 2021-08-17 2021-11-23 广东邦诚纺织科技有限公司 经完经断即时检测自停装置和圆织机

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Publication number Publication date
CZ2017680A3 (cs) 2019-05-09
CN109704147A (zh) 2019-05-03

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