EP4249655A1 - Verbesserte garnhebeanordnung in einer automatischen anspinneinheit einer ringspinnmaschine - Google Patents

Verbesserte garnhebeanordnung in einer automatischen anspinneinheit einer ringspinnmaschine Download PDF

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Publication number
EP4249655A1
EP4249655A1 EP23160704.5A EP23160704A EP4249655A1 EP 4249655 A1 EP4249655 A1 EP 4249655A1 EP 23160704 A EP23160704 A EP 23160704A EP 4249655 A1 EP4249655 A1 EP 4249655A1
Authority
EP
European Patent Office
Prior art keywords
cop
jet arrangement
spinning machine
air
ring spinning
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
EP23160704.5A
Other languages
English (en)
French (fr)
Inventor
Jeganathan Pasupathy
Balakrishnan Thiyagarajan
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 EP4249655A1 publication Critical patent/EP4249655A1/de
Pending legal-status Critical Current

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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
    • 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
    • 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 generally relates to textile spinning machines.
  • the invention relates to an automatic yarn piecing unit for textile ring spinning machines.
  • the invention relates to improved broken yarn lifting arrangement in the automatic piecing unit of textile ring spinning machines.
  • ring spinning machines are crucial machines used to produce continuous lengths of yarn.
  • Textile roving materials produced from roving frame machines are usually fed into the ring spinning machines.
  • the roving material is first drafted and twisted and then wound on a package so called cop or yarn cop.
  • cop or yarn cop a package so called cop or yarn cop.
  • yarn breakage in said ring spinning machines is a common and frequent problem that requires continuous attention of the work force.
  • the yarn breakage remains a major disadvantage in ring spinning machines.
  • large number of workers used to continuously monitor the ring spinning machines usually comprising more than 1600 spindles, throughout the length of the machine frame, which is normally 75 meters long.
  • the automatic piecing unit is in the form of a movable vehicle with wheels/rails/guides.
  • the said piecing unit has in-built drive units, sensing units, and support units.
  • Automatic piecing assembly comprises plurality of modules for broken yarn pickup from cop, yarn inserting into the traveller, yarn suction and yarn piecing at drafting zone etc.
  • the yarn pickup module consists of air blowing means fixedly mounted to the auto piecing unit.
  • All the known yarn lifting arrangements fail to lift or detach the fine count yarn from the cop, say Ne>60.
  • the said failing attempts tends to further increased number of attempts with high intensity of compressed air for more time than previous cycles.
  • the said number of attempts leads to higher consumption of compressed air which leads to problem of higher operating costs.
  • Also prolonged blowing effect over the surface of the cops also causes yarn quality deterioration such as hairiness increase in yarn, twists imperfections and neps formation. If air blow is provided with high pressure to lift fine count yarns from cop, the yarn content in cop will collapse.
  • the piecing efficiency of the automatic piecing unit is very much lower in all known broken yarn lifting arrangements. Thus, reduced efficiency of automatic piecing unit affects overall production efficiency of the ring spinning machines in the spinning mills.
  • the present invention provides an improved yarn lifting arrangement for the automatic piecing unit of ring spinning machines, to successfully detach the broken yarn end from cop, with simple and reliable constructional arrangements.
  • the main object of the present invention is to provide an improved automatic piecing unit for textile ring spinning machines.
  • Another object of the present invention is to provide an improved broken yarn lifting arrangement for automatic piecing unit of textile ring spinning machines.
  • Yet another object of the present invention is to provide an improved broken yarn lifting arrangement for successful detaching of broken yarn in automatic piecing units with simple and reliable construction, suitable for lifting fine count yarns.
  • 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 is necessary for the successful piecing of the broken yarn ends.
  • the present invention is provided with bottom circumferential jet with at least three jet members and top additional jet arrangements in the automatic piecing unit.
  • the three jet members in bottom circumferential jet arrangement comprises preferably three orifices each.
  • the number of orifices can also be more than three or less than three.
  • the diameter of the orifice is preferably 2mm.
  • the three jet members in bottom circumferential jet can be operated in any sequence such that only two jets are operated at a time or only one jet is operated at a time or all the three jets are operated at a time, along with the top additional jet arrangements.
  • the bottom jets are operated in any cyclic order either clockwise or anticlockwise one by one. Any of the three jet members can be switched on and switched off based on the requirement of yarn lifting.
  • the additional jet arrangement comprises at least two blowing nozzles, preferably three, facing towards the cop at a certain height above from the bottom circumferential jet.
  • the bottom circumferential jet 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 additional jet arrangements are positioned in a region proximity to the ring rail at a certain height above from bottom jet, such that the additional jets purges air tangentially in upward direction towards the cop.
  • the additional jet arrangement is provided with three blow nozzles in which two nozzles with outlets project towards the cop surface such that the outlet of said nozzles blows air at an acute angle towards the upward direction of cop or at perpendicular direction to the vertical axis of cop, at still further height from the ring rail and another blow nozzle points towards the traveller region of the ring.
  • the additional blow nozzles are mounted in a housing in the automatic piecing unit.
  • the blow nozzles in additional jet arrangement can be of any size and diameter.
  • the inner diameter of the blow nozzle is preferably in the range of 2 to 4 mm and the outer diameter is preferably in the range of 4 to 6 mm.
  • All the jet members of the bottom circumferential jet and all the blow nozzles of additional jet arrangement are provided with air in different sequences in any cyclic order to successfully lift the broken yarn with fine counts from cop.
  • the three blow nozzles in additional jet arrangement also can be operated in any sequence such that only two nozzles are operated at a time or only one nozzle is operated at a time or all the three nozzles are operated at a time.
  • the three blow nozzles in additional jet arrangement can be operated in any cyclic order.
  • one of the blow nozzle serves the purpose of both lifting the broken yarn and also rotating the traveller around the ring by blowing the compressed air during the threading operation of piecing sequence.
  • the additional blow nozzles faces various surfaces of cop over the height of cop and the blow nozzles are adjustable in any direction both horizontally and vertically and can be tilted at any angles to blow air towards the cop at any point over and around the cop surface.
  • the above said bottom circumferential jet arrangement and the additional jet arrangement are configured to be connected to a control unit with a human machine interface and can be controlled to operate at any sequence.
  • the timing and sequence of providing the air currents, air flow rate / air pressure and velocity control of all the jet members can be varied according to the broken yarn picking requirement and yarn count through control unit.
  • the several operating parameters and the sequences of the jet members and blow nozzles can be stored in the control unit and can be selected in the display unit based on the requirement for each and every spinning machine and also based on the yarn count and yarn type.
  • the detached yarn end is moved upstream into a top suction tube adjacent to the drafting unit, to hold the yarn until piecing with the roving material delivering from drafting zone.
  • an automatic piecing unit for a textile ring spinning machine comprises a bottom circumferential jet arrangement having at least three nozzles, each nozzle having a plurality of orifices.
  • the bottom circumferential jet arrangement is disposed concentrically around a spindle of the textile ring spinning machine proximate a cop. Each nozzle project air through the orifice towards cop at an upwards angle.
  • the automatic piecing unit also comprises an additional jet arrangement disposed above the bottom circumferential jet arrangement and having a plurality of blow nozzles. At least two blow nozzles blow air towards the cop of the ring spinning machine.
  • Each of the bottom circumferential jet arrangement and the additional jet arrangement discharge air to detach a broken yarn end from the cop of the ring spinning machine and lift the broken yarn end upstream towards a drafting zone of the ring spinning machine to enable effective automatic yarn piecing with a drafted fibre material.
  • the additional jet arrangement having a plurality of blow nozzles, in which two blow nozzles blow air at an acute angle towards an upward direction of the cop and another blow nozzle points towards a traveler region of a ring of the textile ring spinning machine.
  • each of the bottom circumferential jet arrangement and the additional jet arrangement simultaneously discharge air to detach the broken yarn end from the cop of the ring spinning machine.
  • each of the bottom circumferential jet arrangement and the additional jet arrangement cyclically discharge air to detach the broken yarn end from the cop of the ring spinning machine.
  • each of the bottom circumferential jet arrangement and the additional jet arrangement discharge a whirling air current.
  • two blow nozzles projects air at perpendicular direction to the vertical axis of the cop of the ring spinning machine and another blow nozzle points air towards the traveler region of the ring of the ring spinning machine.
  • each of the bottom circumferential jet arrangement and the additional jet arrangement projects air tangentially and axially in upward direction towards the cop of the ring spinning machine.
  • the blow nozzles of the additional jet arrangement faces various surfaces of the cop over the height of the cop and the blow nozzles are adjustable in any direction both horizontally and vertically and can be tilted at any angles to blow air towards the cop at any point over and around the cop surface.
  • the bottom circumferential jet arrangement and the additional jet arrangement are configured to be connected to a control unit with a human machine interface.
  • control unit stores several operating parameters, sequence timings and sequence of providing the air currents, air flow rate or air pressure and velocity control of the nozzles of the bottom circumferential jet arrangement and the blow nozzles of the additional jet arrangement.
  • the nozzles of the bottom circumferential jet arrangement and the blow nozzles of the additional jet arrangement lifts the broken yarn with fine counts, preferably greater than 60 Ne counts, from the cop of the ring spinning machine.
  • the nozzles of the bottom circumferential jet arrangement and the blow nozzles of the additional jet arrangement are provided with air in different sequences in any cyclic order either clockwise or anticlockwise one by one to lift the broken yarn with fine counts from the cop of the ring spinning machine.
  • the inner diameter of the blow nozzles is preferably in the range of 2 to 4 mm and the outer diameter of the blow nozzles is preferably in the range of 4 to 6 mm.
  • the additional jet arrangement is movable vertically in synchronization with a ring rail of the ring spinning machine.
  • the additional jet arrangement is moved forward through actuating means, which includes at least one of the electric cylinder, pneumatic cylinder or the like.
  • the diameter of the orifices of the bottom circumferential jet arrangement is preferably 2 mm.
  • a method of detaching and lifting a broken yarn end from a cop of a textile ring spinning machine using an automatic piecing unit comprises step of purging air jets from two side nozzles of a bottom circumferential jet arrangement of the automatic piecing unit on the cop for a predetermined period.
  • the method also comprises step of purging air jets from a plurality of blow nozzles of an additional jet arrangement of the automatic piecing unit on the cop a predetermined period.
  • the method further comprises step of purging air jet from a nozzle of the bottom circumferential jet arrangement of the automatic piecing unit on the cop a predetermined period.
  • the method further comprises step of applying and relieving spindle brake of the cop of ring spinning machine periodically for a predetermined period.
  • the method comprises step of activating the additional jet arrangement to blow air towards the cop in such a manner that two blow nozzles blow air at an acute angle towards an upward direction of the cop and another blow nozzle points towards a traveler region of a ring of the ring spinning machine.
  • Each of the bottom circumferential jet arrangement and the additional jet arrangement are provided with air to detach a broken yarn end from the cop and lift the broken yarn end upstream towards a drafting zone of the ring spinning machine to enable effective automatic yarn piecing with a drafted fibre material.
  • each of the bottom circumferential jet arrangement and the additional jet arrangement simultaneously discharge air to detach the broken yarn end from the cop.
  • each of the bottom circumferential jet arrangement and the additional jet arrangement cyclically discharge air to detach the broken yarn end from the cop of the ring spinning machine.
  • each of the bottom circumferential jet arrangement and the additional jet arrangement discharge a whirling air current.
  • two blow nozzles projects air at perpendicular direction to the vertical axis of the cop and another blow nozzle points air towards the traveler region of the ring of the ring spinning machine.
  • each of the bottom circumferential jet arrangement and the additional jet arrangement projects air tangentially and axially in upward direction towards the cop of the ring spinning machine.
  • control unit stores several operating parameters, sequence timings and sequence of providing the air currents, air flow rate or air pressure and velocity control of the bottom circumferential jet arrangement and the additional jet arrangement.
  • the bottom circumferential jet arrangement and the additional jet arrangement lifts the broken yarn with fine counts preferably greater than 60 Ne, from the cop of the ring spinning machine.
  • the bottom circumferential jet arrangement and the additional jet arrangement are provided with air in different sequences in any cyclic order either clockwise or anticlockwise one by one to lift the broken yarn with fine counts from the cop of the ring spinning machine.
  • the automatic piecing unit (1) of the present invention is provided with bottom circumferential jet arrangement (2) and an additional jet arrangement (3).
  • the automatic piecing unit (1) moves longitudinally along the aisle of the ring spinning machine (4).
  • the ring spinning machine (4) is capable of winding yarn onto a bobbin mounted to spinning spindle, so called cop (5).
  • cop (5) When yarn breakage occurs in the spinning sequence, the broken yarn thread end is stuck in the spinning cop (5). To enable yarn piecing, the yarn end has to be detached from the cop (5).
  • the automatic piecing unit is provided with a bottom circumferential jet arrangement (2) mounted in the automatic piecing unit.
  • the bottom circumferential jet arrangement (2) is placed concentrically around the spindle with at least three nozzles (6a, 6b, 6c) surrounding the cop (5) at a position below the ring rail (8) to blow air jets.
  • the jet members in bottom circumferential jet (2) comprises three orifices (7) each facing at an acute angle towards the cop (5).
  • the diameter of the orifice is preferably 2mm.
  • the automatic piecing unit according to the present invention is provided with an additional jet arrangement (3) mounted in the automatic piecing unit (1) as shown in figures 1 & 2 .
  • the said additional jet (3) is moved forward through actuating means.
  • the actuating means is at least one of the electric cylinder, pneumatic cylinder or the like.
  • the additional jet arrangement (3) is movable vertically in synchronization with the ring rail (8) of ring spinning machine (4).
  • the controlled movement of the said additional jet arrangement (3) with respect to ring rail (8) is performed by suitable sensors and actuators, preferably electric type.
  • the actuators can also be one of pneumatic, hydraulic, linear, etc.
  • the additional jet arrangement (3) is provided with at least two, preferably three substantially cylindrical and slender blow nozzles (9a, 9b, 9c).
  • the three blow nozzles (9a, 9b, 9c) altogether serves the purpose of lifting the broken yarn from the cop (5) by blowing the compressed air tangentially and axially towards the cop (5) with broken yarn end.
  • the additional blow nozzles (9a, 9b, 9c) faces various surfaces of cop (5) over the height of cop (5) and the blow nozzles (9a, 9b, 9c) are adjustable in any direction both horizontally and vertically and can be tilted at any angles to blow air towards the cop (5) at any point over and around the cop surface.
  • the additional jet arrangement (3) with three blow nozzles (9a, 9b, 9c), two nozzles (9a, 9b) with outlets projects towards the cop surface such that the outlet of said nozzles blows air at an acute angle towards the upward direction of cop (5) or at perpendicular direction to the vertical axis of cop (5), at still further height from the ring rail (8) and another blow nozzle (9c) points towards the traveller region of the ring (10).
  • the additional blow nozzles (9a, 9b, 9c) are mounted in a housing (11) in the automatic piecing unit (1).
  • the blow nozzles in additional jet arrangement can be of any size and diameter.
  • the inner diameter of the blow nozzle (9) is preferably in the range of 2 to 4 mm and the outer diameter is preferably in the range of 4 to 6 mm.
  • All the jet members (6a, 6b, 6c) of the bottom circumferential jet (2) and all the blow nozzles (9a, 9b, 9c) of additional jet arrangement (3) are provided with air in different sequences in any cyclic order to successfully lift the broken yarn with fine counts from cop (5) and also the blow nozzles can be provided with air current simultaneously.
  • the three blow nozzles (9a, 9b, 9c) in additional jet arrangement (3) can be operated in any sequence such that only two nozzles are operated at a time or only one nozzle is operated at a time or all the three nozzles are operated at a time.
  • the blow nozzle (9c) of the additional jet arrangement (3) pointing towards the ring traveller also serves the purpose of blowing the traveller around the ring (10) during the threading operation.
  • the said yarn held in the top suction tube is pieced with delivery yarn from drafting zone of ring spinning machine (4).
  • the broken yarn spindle is braked, the broken yarn end is lifted from the cop (5) and held inside the top suction tube.
  • the top suction tube then moves upstream near the drafting zone of ring spinning machine (4) for subsequent piecing with delivering fibre.
  • the bottom circumferential jet arrangement (2) is positioned concentrically around the cop (5) of the spindle in proximity to the ring rail (8) of ring spinning machine (4) slightly below the ring rail position.
  • the additional jet arrangement (3) with three blow nozzles (9a, 9b, 9c) is placed in front of the broken yarn cop (5) proximity to the ring rail (8) at a certain height above the bottom jet (2).
  • the broken yarn thread normally tangles with the wound yarn in the cop (5) at any portion from top to bottom of the cop (5) which cannot be adjudged precisely.
  • the circumferential bottom jet arrangement (2) is provided as separate jet members, preferably three separate jet members (6a, 6b, 6c) with three orifices (7) each deriving air from air sources.
  • the first jet member (6a) is placed in front of the spinning cop (5) in substantially parallel manner to the length of the ring spinning frame.
  • the second (6b) and third (6c) jet members are placed in substantially perpendicular manner to the length of the ring spinning frame, one each at the sides of the spinning cop (5) in a circumferential manner as shown in figure 3 .
  • each of the bottom jet members (2) and an additional jet arrangement (3) are simultaneously or cyclically provided with air / whirling air current to detach the yarn end from the cop (5) and lift the same upstream towards the drafting zone to enable effective automatic yarn piecing with the drafted fibre material.
  • the jet members (6a, 6b, 6c) combined with additional jet (3) are worked in the following sequence to achieve successful detaching and lifting of the broken yarn end from the cop (5).
  • spindle brake is applied for a predetermined period. Now, the spindle stops rotating.
  • the second (6b) and third (6c) jet members (side jets) combined with additional jet members (3) are made to purge air jets for a fraction of second.
  • spindle brake is relieved for a predetermined period. Now, the spindle starts rotating.
  • the first (6a) jet member (front jet) is made to purge air jet through the plurality of orifices (7) for a fraction of second.
  • the additional jet arrangement (3) is activated simultaneously with every possible sequence as explained above.
  • the additional jet arrangement (3) with at least three blow nozzles (9a, 9b, 9c) are provided with air current to blow air towards the cop (5).
  • the additional jet arrangement (3) is positioned in a region proximity to the ring rail (8) such that it purges air tangentially in upward direction towards the cop (5).
  • the additional jet arrangement is provided with three blow nozzles (9a, 9b, 9c) in which two nozzles (9a, 9b) with outlets project towards the cop surface such that the outlet of said nozzles blows air at an acute angle towards the upward direction of cop or at perpendicular direction to the vertical axis of cop (5) at still further height from the ring rail (8) and another nozzle (9c) points towards the traveller region of the ring (10).
  • the additional blow nozzles (9a, 9b, 9c) are mounted in a housing (11) in automatic piecing unit (1).
  • All the jet members (6a, 6b, 6c) and blow nozzles (9a, 9b, 9c) are provided with air in different sequences in any cyclic order or simultaneously to successfully lift the broken yarn, particularly with fine counts, greater than 60 Ne, from cop (5).
  • the above said bottom circumferential jet arrangement (2) and the additional jet arrangement (3) are configured to be connected to a control unit with a human machine interface and can be controlled to operate at any sequence.
  • the timing and sequence of providing the air currents, air flow rate / air pressure and velocity control of all the jet members can be varied according to the broken yarn picking requirement and yarn count through control unit.
  • the several operating parameters and the sequences of the jet members and blow nozzles can be stored in the control unit and can be selected in the display unit based on the requirement for each and every spinning machine and also based on the yarn count and yarn type.
  • the broken yarn end is detached from the cop (5) and directed upstream.
  • the detached broken yarn end is held in the top suction unit placed at the top of the automatic piecing unit in front of the drafting zone of the ring spinning machine.
  • the broken yarn end is detached from the spinning cop irrespective of its position anywhere from top to bottom and directed upstream towards the drafting zone successfully. Thereby, the broken yarn is lifted to enable automatic piecing with the drafted material.
  • the above sequence takes place simultaneously for every yarn breakage occurrence irrespective of the ring rail position.
  • the above described automatic piecing unit for ring spinning machine provides an effective broken yarn end lifting arrangement suitable for fine count yarns.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP23160704.5A 2022-03-22 2023-03-08 Verbesserte garnhebeanordnung in einer automatischen anspinneinheit einer ringspinnmaschine Pending EP4249655A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN202241015703 2022-03-22

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Publication Number Publication Date
EP4249655A1 true EP4249655A1 (de) 2023-09-27

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Application Number Title Priority Date Filing Date
EP23160704.5A Pending EP4249655A1 (de) 2022-03-22 2023-03-08 Verbesserte garnhebeanordnung in einer automatischen anspinneinheit einer ringspinnmaschine

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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
DE3012210A1 (de) 1980-03-28 1981-10-08 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Verfahren und vorrichtung zum abloesen des gebrochenen fadenendes von der wicklung
EP0417618A2 (de) * 1989-09-15 1991-03-20 Zinser Textilmaschinen GmbH Verfahren und Vorrichtung zum pneumatischen Ablösen eines gebrochenen Fadenendes vom Windungskegel eines Fadenwicklungskörpers
JPH07278975A (ja) * 1994-04-08 1995-10-24 Ishikawa Seisakusho Ltd 紡機の自動糸継ぎ機における糸切れボビンの糸端取り出し方法
DE19501464C1 (de) * 1995-01-19 1996-05-23 Zinser Textilmaschinen Gmbh Vorrichtung zum selbsttätigen Beheben von Fadenbrüchen an Ringspinnmaschinen
EP3556918A1 (de) * 2018-04-20 2019-10-23 Lakshmi Machine Works Ltd. Garnhebevorrichtung für eine anspinnvorrichtung und verfahren dafür

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
DE3012210A1 (de) 1980-03-28 1981-10-08 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Verfahren und vorrichtung zum abloesen des gebrochenen fadenendes von der wicklung
EP0417618A2 (de) * 1989-09-15 1991-03-20 Zinser Textilmaschinen GmbH Verfahren und Vorrichtung zum pneumatischen Ablösen eines gebrochenen Fadenendes vom Windungskegel eines Fadenwicklungskörpers
JPH07278975A (ja) * 1994-04-08 1995-10-24 Ishikawa Seisakusho Ltd 紡機の自動糸継ぎ機における糸切れボビンの糸端取り出し方法
DE19501464C1 (de) * 1995-01-19 1996-05-23 Zinser Textilmaschinen Gmbh Vorrichtung zum selbsttätigen Beheben von Fadenbrüchen an Ringspinnmaschinen
EP3556918A1 (de) * 2018-04-20 2019-10-23 Lakshmi Machine Works Ltd. Garnhebevorrichtung für eine anspinnvorrichtung und verfahren dafür

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