EP3556918A1 - Garnhebevorrichtung für eine anspinnvorrichtung und verfahren dafür - Google Patents

Garnhebevorrichtung für eine anspinnvorrichtung und verfahren dafür Download PDF

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Publication number
EP3556918A1
EP3556918A1 EP19168570.0A EP19168570A EP3556918A1 EP 3556918 A1 EP3556918 A1 EP 3556918A1 EP 19168570 A EP19168570 A EP 19168570A EP 3556918 A1 EP3556918 A1 EP 3556918A1
Authority
EP
European Patent Office
Prior art keywords
yarn
jet
air current
lifting arrangement
predetermined time
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.)
Pending
Application number
EP19168570.0A
Other languages
English (en)
French (fr)
Inventor
Srinivasan RAJASEKARAN
Jeganathan Pasupathy
Arulanandam Thilip Kumar
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.)
Filing date
Publication date
Application filed by Lakshmi Machine Works Ltd filed Critical Lakshmi Machine Works Ltd
Publication of EP3556918A1 publication Critical patent/EP3556918A1/de
Pending 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
    • 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
    • B65H67/083—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement handling the yarn-end of the new supply package
    • 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 machines, particularly the invention relates to broken yarn lifting arrangement to detach the broken yarn end from the spinning cop to enable automatic piecing operation in textile ring spinning machines.
  • Ring spinning machines are the most crucial machines in textile spinning mills.
  • the said ring spinning machines delivers the final stage of cotton in spinning line, so called yarn.
  • yarn breakage occurs frequently, and it is to be continuously monitored and pieced by the manual labours.
  • the yarn breakage occurs due to various parameters of yarn and machine and it is unavoidable.
  • the broken yarn thread normally tangles with the wound yarn in the cop at any portion from top to bottom of the cop which cannot be adjudged precisely.
  • manual labours continuously watch for yarn breakages and perform manual piecing of broken yarns. This has to be done for a machine frame normally consisting of more than 1600 spindles. Then, yarn spinning sequence has to be restarted then and there after yarn breakage in order to resume yarn spinning and to avoid wastage of yarn.
  • the automatic piecing unit is in the form of a movable vehicle with wheels/rails.
  • the said piecing vehicle stops at respective spindle units which require piecing attention.
  • the piecing unit in general moves longitudinally over the machine frame aisles. Before initiating piecing operation, the piecing vehicle stops in front of the spindle position of ring spinning machine. Then the broken yarn end which is available in the spinning cop has to be found and detached from the cop and lifted above to enable piecing operation.
  • the said detaching of yarn from spinning cop is not successfully done so far in any known type of automatic piecing units.
  • the present invention provides an improved arrangement for detaching the broken yarn end from the spinning cop to enable automatic piecing in ring spinning machines.
  • the main object of the present invention is to provide an improved piecing unit for textile ring spinning machines.
  • Another object of the present invention is to provide a yarn lifting arrangement in the automatic piecing unit of the textile ring spinning machines.
  • Yet another object of the present invention is to provide an improved broken yarn end detaching arrangement in the automatic piecing unit of the textile ring spinning machines.
  • the automatic piecing unit is provided for textile ring spinning machines.
  • the automatic piecing unit assists in yarn piecing operation during yarn breakage incidents in ring spinning machines.
  • the proper picking / detaching of the broken yarn end from the spinning cop is necessary for the successful piecing of the broken yarn ends.
  • the present invention is provided with a yarn lifting arrangement in the automatic piecing unit.
  • the lifting arrangement is placed in front of the ring rail slightly below the ring rail position such that it purges air towards the cop from plurality of orifices for lifting the broken yarn end from the cop.
  • the jet members are provided around the spinning cop at the bottom portion of the cop preferably.
  • the lifting arrangement is advantageously placed at any position in front of the cop from top to bottom as an embodiment. Then the detached yarn end is moved upwards into a controlled suction nozzle adjacent to the drafting unit to hold the yarn until piecing said yarn with the roving material delivering from drafting zone.
  • a yarn lifting arrangement for an automatic yarn piecing unit comprising of a base plate having a first end and a second end.
  • the first end connected to an actuating means provides said base plate working position in the forward motion and home position in the backward motion.
  • the second end is a free end having an opening near to the free end configured to encircle a cop of a spindle in the working position.
  • Said yarn lifting arrangement further comprises plurality of jet members with plurality of orifices configured to position around the contour of the opening, supplying air current when the base plate is in working position to detach the tangled yarn end from the spinning cop and to lift the yarn upwards to enable yarn piecing in the textile machine.
  • a method for lifting a yarn by a piecing unit comprising the steps of, placing plurality of jet members around the contour of the opening of a base plate such that plurality of orifices projects to a cop of a spindle, applying and relieving spindle brake for a predetermined time, supplying air current through said plurality of jet members through the plurality of orifices for a predetermined time, and detaching the tangled yarn end from the cop through the air current from said jet members and lifting the yarn upwards to enable yarn piecing in textile machine.
  • Automatic piecing unit is provided for textile ring spinning machines.
  • the automatic piecing unit moves longitudinally along the aisle of the ring spinning machine.
  • the ring spinning machine is capable of winding yarn onto a bobbin mounted to spinning spindle, so called cop.
  • cop spinning spindle
  • the broken yarn thread is tangled in the spinning cop.
  • the tangled yarn end has to be detached from the cop.
  • automatic piecing unit assists in yarn piecing operation during yarn breakage incidents in ring spinning machines.
  • the proper picking / detaching of the broken yarn end from the spinning cop is necessary for the successful piecing of the broken yarn ends.
  • the present invention is provided with a yarn lifting arrangement in the automatic piecing unit.
  • Figures 1 and 2 illustrates the schematic view of the yarn lifting arrangement, according to the present invention.
  • a yarn lifting arrangement (102) for an automatic yarn piecing unit (100) comprising of a base plate (104) having a first end and a second end.
  • the first end connected to an actuating means (106) provides the base plate (104) working position in the forward motion and home position in the backward motion.
  • the actuating means (106) is at least a pneumatic piston - cylinder actuator preferably or the like.
  • the second end is a free end having an opening near to the free end configured to encircle a cop (110) of a spindle (112) in the working position.
  • said opening is in semicircular shape.
  • Said yarn lifting arrangement (102) further comprises plurality of jet members (108) configured to position around the contour of the opening, supplying air current in the working position to detach the tangled yarn end from the spinning cop (110) and to lift the yarn upwards towards the drafting zone to enable effective automatic yarn piecing in the textile machine.
  • the corresponding figure 3A illustrates the side view of the yarn lifting arrangement in the automatic piecing unit and winding cop of ring spinning machine in which broken yarn is to be lifted
  • figure 3B illustrates broken yarn is lifted and sucked upwards into the top suction unit in front of the drafting zone of the ring spinning machine, according to the present invention.
  • the jet member (108) is a block having plurality of orifices (118B) on the tapered surface formed at an acute angle between the top face and the side facing said cop.
  • the air purging hole of the orifices (118B) of the jet members (108) forms an acute angle with respect to the vertical.
  • the acute angle between the orifice (118B) and the vertical is in the range of 15 degrees to 30 degrees, preferably 20 degrees.
  • the diameter of the orifice (118B) is preferably 2mm.
  • the block has a through hole (118A) along the horizontal axis parallel to line of position of the plurality of orifices (118B) such that air from a suction source is transferred to plurality of orifices (118B) through hole (118A).
  • the block can also be provided with hole along the horizontal axis perpendicular to line of position of the plurality of orifices (118B).
  • Figures 4 illustrates the schematic view of a jet member, and the corresponding figures 4A, 4B illustrates the top view and cross-sectional view the of a jet member.
  • the number of jet members (108) in a yarn lifting arrangement (102) can be three.
  • the jet members can also be a common unit according to an embodiment.
  • the jet members are positioned on the contour of the opening at an included angle of 90 degrees between them.
  • the first jet member (108B) is placed in front of the spinning cop in substantially parallel manner to the length of the ring spinning frame.
  • the second and third jet members (108A, 108C) are placed in substantially perpendicular manner to the length of the ring spinning frame, one each at the sides of the spinning cop.
  • each of the jet members (108A, 108B, 108C) are provided with plurality of orifices (118B) preferably three.
  • the yarn lifting arrangement (102) is actuated to move forward to reach working position in which jet members (108) are positioned concentrically around the cop (110) of the spindle (112) in front of the ring rail of ring spinning machine (not shown) slightly below the ring rail position.
  • the cop (110) placed in the ring spinning spindle (112) is purged with air from the jet members (108).
  • the broken yarn (116) end is lifted from the cop (110) and caught into the suction unit (114) which is provided with controlled suction so as to not unwind the already wound cop (110).
  • the detached yarn end (112) is moved upwards into a controlled suction nozzle adjacent to the drafting unit to hold the yarn until piecing said yarn with the drafted roving material delivering from drafting zone.
  • the jet members are worked in the following sequence to achieve successful detaching and lifting of the broken yarn end from the spinning cop.
  • the jet members are positioned at a predetermined distance from spindle centre, along the contour of the opening.
  • spindle brake (not shown) is applied for a predetermined period in the range of 0.1 to 1 second, for example 0.7 seconds, spindle stops rotating.
  • the second and third jet members (side jets) are made to purge air jets through the plurality of orifices for a fraction of second in the range of 0.01 to 0.1 seconds, for example 0.05 seconds.
  • spindle brake is relieved for a predetermined period in the range of 0.1 to 0.5 seconds, for example 0.2 seconds, rotating the spindle.
  • the first jet member is made to purge air jet through the multiple / plurality of orifices for a fraction of second in the range of 0.01 to 0.1 seconds, for example 0.05 seconds.
  • the broken yarn end is detached from the spinning cop irrespective of its position anywhere from top to bottom and directed upwards towards the drafting zone successfully.
  • the yarn end detached and directed upwards by the action of the jet members are sucked by another controlled suction unit placed at the top of the automatic piecing unit in front of the drafting zone of the ring spinning machine (not shown). Thereby, the broken yarn is lifted to enable automatic piecing with the drafted material.
  • the jet members are worked in the following sequence to achieve successful detaching and lifting of the broken yarn end from the spinning cop. Initially, the jet members are placed at a predetermined distance from spindle centre along the contour of the opening. The first jet member purges air jet when the spindle is applied brake for a predetermined time interval. Then, the spindle brake is relieved for a predetermined time interval in fraction of second. During that time, the second and third jet members purges air jet. As a result of the above said action, the broken yarn end is detached from the spinning cop and directed upwards to enable automatic piecing with the drafted material. The above sequence takes place irrespective of the ring rail position. The above sequences are example embodiments only. The three jet members are worked in any different sequences and any different time intervals. The jet members are not defined to three in total, it may also be more than three or less than three.
  • the lifting arrangement is placed in front of the ring rail slightly below the ring rail position such that it purges air towards the cop from plurality of orifices for lifting the broken yarn end from the cop.
  • the lifting arrangement can be advantageously placed at any position in front of the cop from top to bottom as an embodiment.
  • the lifting arrangement is positioned at the bottom portion of the spinning cop.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP19168570.0A 2018-04-20 2019-04-11 Garnhebevorrichtung für eine anspinnvorrichtung und verfahren dafür Pending EP3556918A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201841015061 2018-04-20

Publications (1)

Publication Number Publication Date
EP3556918A1 true EP3556918A1 (de) 2019-10-23

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EP19168570.0A Pending EP3556918A1 (de) 2018-04-20 2019-04-11 Garnhebevorrichtung für eine anspinnvorrichtung und verfahren dafür

Country Status (2)

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EP (1) EP3556918A1 (de)
CN (1) CN110387615B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3981898A1 (de) * 2020-10-12 2022-04-13 Lakshmi Machine Works Ltd. Spindelbremsanordnung für eine anspinneinheit einer ringspinnmaschine
EP4249655A1 (de) * 2022-03-22 2023-09-27 Lakshmi Machine Works Ltd. Verbesserte garnhebeanordnung in einer automatischen anspinneinheit einer ringspinnmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132057A (en) * 1975-10-01 1979-01-02 Zinser Textilmaschinen Gmbh Process and apparatus for pneumatic separation and aspiration of broken thread ends
US4565062A (en) * 1983-05-03 1986-01-21 Zinser Textilmaschinen Gmbh Thread and yarn end retrieval nozzle
DE3924285A1 (de) * 1989-07-22 1991-01-31 Zinser Textilmaschinen Gmbh Vorrichtung zum pneumatischen abloesen eines gebrochenen fadenendes
DE19501464C1 (de) * 1995-01-19 1996-05-23 Zinser Textilmaschinen Gmbh Vorrichtung zum selbsttätigen Beheben von Fadenbrüchen an Ringspinnmaschinen
DE19536758A1 (de) * 1995-10-02 1997-04-03 Schlafhorst & Co W Vorbereitungseinrichtung für Spinnkopse
DE102015007820A1 (de) * 2015-06-18 2016-12-22 Saurer Germany Gmbh & Co. Kg Vorrichtung zum Zuführen eines Fadens auf einer Spulstelle einer automatischen Spulmaschine

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US3504488A (en) * 1968-12-13 1970-04-07 Burlington Industries Inc Splicing device for yarns or the like
DE2350840C3 (de) * 1973-10-10 1979-07-05 Fritz 7341 Bad Ueberkingen Stahlecker Offenendspinnmaschine mit einer Vielzahl nebeneinander angeordneter Spinnaggregate
DE3744757A1 (de) * 1987-03-02 1989-01-05 Schubert & Salzer Maschinen Verfahren und vorrichtung zum anspinnen einer mit einem pneumatischen drallorgan arbeitenden spinnvorrichtung
DE3726720A1 (de) * 1987-08-11 1989-02-23 Zinser Textilmaschinen Gmbh Verfahren und vorrichtung zum selbsttaetigen fadenansetzen an einer ringspinnmaschine
DE3734565A1 (de) * 1987-10-13 1989-05-03 Schubert & Salzer Maschinen Verfahren und vorrichtung zum anspinnen eines fadens an einer offenend-spinnvorrichtung
IT1248002B (it) * 1991-06-06 1995-01-05 Savio Spa Metodo per l'infilaggio pneumatico in un fuso a doppio perno cavo di un ritorcitoio
TW274101B (de) * 1994-04-25 1996-04-11 Murata Machinery Ltd
WO2013144748A1 (en) * 2012-03-28 2013-10-03 Lakshmi Machine Works Limited Web drafting assembly of carding machine
JP2015174764A (ja) * 2014-03-18 2015-10-05 村田機械株式会社 撚掛ノズル、糸継ノズル構造体、糸継装置、巻取ユニット及び繊維機械
JP2016155648A (ja) * 2015-02-24 2016-09-01 村田機械株式会社 糸継装置及び糸巻取装置
CN206467361U (zh) * 2017-01-15 2017-09-05 山西新纺科技有限公司 一种用于转杯纺纱机的新型半自动接头装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132057A (en) * 1975-10-01 1979-01-02 Zinser Textilmaschinen Gmbh Process and apparatus for pneumatic separation and aspiration of broken thread ends
US4565062A (en) * 1983-05-03 1986-01-21 Zinser Textilmaschinen Gmbh Thread and yarn end retrieval nozzle
DE3924285A1 (de) * 1989-07-22 1991-01-31 Zinser Textilmaschinen Gmbh Vorrichtung zum pneumatischen abloesen eines gebrochenen fadenendes
DE19501464C1 (de) * 1995-01-19 1996-05-23 Zinser Textilmaschinen Gmbh Vorrichtung zum selbsttätigen Beheben von Fadenbrüchen an Ringspinnmaschinen
DE19536758A1 (de) * 1995-10-02 1997-04-03 Schlafhorst & Co W Vorbereitungseinrichtung für Spinnkopse
DE102015007820A1 (de) * 2015-06-18 2016-12-22 Saurer Germany Gmbh & Co. Kg Vorrichtung zum Zuführen eines Fadens auf einer Spulstelle einer automatischen Spulmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3981898A1 (de) * 2020-10-12 2022-04-13 Lakshmi Machine Works Ltd. Spindelbremsanordnung für eine anspinneinheit einer ringspinnmaschine
EP4249655A1 (de) * 2022-03-22 2023-09-27 Lakshmi Machine Works Ltd. Verbesserte garnhebeanordnung in einer automatischen anspinneinheit einer ringspinnmaschine

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Publication number Publication date
CN110387615B (zh) 2022-08-05
CN110387615A (zh) 2019-10-29

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