EP3643819A1 - Agencement de prélèvement de fil d'un métier à filer à anneaux et procédé associé - Google Patents

Agencement de prélèvement de fil d'un métier à filer à anneaux et procédé associé Download PDF

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Publication number
EP3643819A1
EP3643819A1 EP19189586.1A EP19189586A EP3643819A1 EP 3643819 A1 EP3643819 A1 EP 3643819A1 EP 19189586 A EP19189586 A EP 19189586A EP 3643819 A1 EP3643819 A1 EP 3643819A1
Authority
EP
European Patent Office
Prior art keywords
cop
yarn
suction jet
jet assembly
suction
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
EP19189586.1A
Other languages
German (de)
English (en)
Inventor
Jeganathan Pasupathy
Masthigoundenpathy Giriraj Deepan Marudachalam
Chennaiyan Badhrinath
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 EP3643819A1 publication Critical patent/EP3643819A1/fr
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
    • D01H15/013—Carriages travelling along the machines
    • 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

Definitions

  • the present invention relates to textile machines, particularly, the invention relates to yarn picking arrangement for an automatic yarn piecing unit in ring spinning machines. More particularly, the invention relates to broken yarn picking 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 very crucial machines.
  • the said ring spinning machines produces the resultant form of cotton in spinning line, so called yarn.
  • yarn breakage occurs frequently which is a major setback.
  • Yarn breakage has to be continuously monitored and broken yarn has to be pieced then and there by the manual labours.
  • the yarn breakage occurs due to various parameters of yarn and machine and it is unavoidable.
  • manual labours continuously monitors yarn breakages and perform manual piecing of broken yarns round the clock walking along the aisle of the ring frames. This has to be done for a machine frame normally consisting of more than 1600 spindles and about 75 metres long. Then, yarn spinning sequence has to be restarted then and there after piecing in order 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 positions which require piecing attention.
  • the piecing unit in general moves longitudinally over the machine frame aisles.
  • the piecing vehicle stops in front of the spindle position of ring spinning machine.
  • 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 automatically is a major challenge textile spinning industry is facing in general.
  • 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 spinning spindle, so called cop (3).
  • cop (3) a bobbin mounted to spinning spindle
  • the broken yarn thread becomes tangled in the spinning cop (3).
  • the tangled yarn end has to be detached from the cop (3).
  • auto piecing units are provided with yarn picking suction arrangements.
  • the cylindrical suction nozzle (5) with horn type mouth extends from the piecing unit and is positioned usually at a predetermined distance above the top of the spinning cop (3).
  • the distance maintained in known arrangements is approximately 15 mm upwards from the top of the spinning cop (3).
  • broken yarn end from bottom of the chase length of the cop (3) is not able to be picked.
  • the height difference of the suction mouth (5) from the cop (3) does not provides required suction to effectively pick the broken yarn from the cop (3).
  • the existing arrangement is not reliable in picking the broken yarn end from the cop.
  • An important object of the invention aims at providing a solution for the shortcomings of the automatic piecing unit.
  • Another object of the invention is to provide an arrangement for picking broken yarn end from the spinning cop to enable automatic piecing in ring spinning machines.
  • Yet another object of the present invention is to provide an arrangement for broken yarn picking anywhere in the chase length of the cop in textile ring spinning machines.
  • Further object of the present invention is to provide an arrangement for detaching broken yarn end from the spinning cop of the textile ring spinning machines.
  • yarn picking arrangement for an automatic yarn piecing unit in ring spinning machines comprising of a suction jet assembly comprising a hose having a first end and a second end.
  • the first end connected to a suction air source, and the second end has a circumferential housing.
  • a driving means coupled to the suction jet assembly capable of moving the suction jet assembly vertically up and down such that the circumferential housing is capable of surrounding the cop at the outer portion at the top of the cop.
  • the suction air source generates a suction pull which pulls the broken yarn end present anywhere in the chase length from bottom to top of the cop into the housing.
  • a method for picking a yarn by a yarn picking arrangement comprises the steps of moving a suction jet assembly from drafting zone to cop zone such that a circumferential housing of the suction jet assembly surrounds a cop at the outer portion at the top of the cop.
  • tangled broken yarn end is picked by a suction pull into the housing, wherein the broken yarn end is picked on the cop anywhere in the chase length from bottom to top.
  • suction jet assembly is moved from cop zone to drafting zone to enable automatic piecing operation in a textile ring spinning machine.
  • the 3 over 3 drafting arrangement is shown herein in figures only for illustrative purpose.
  • the drafting arrangement also includes 4 over 4 drafting and compact spinning drafting arrangement, etc.
  • Automatic piecing unit 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 picked from the cop.
  • automatic piecing unit assists in yarn piecing operation during yarn breakage incidents in ring spinning machines.
  • the proper picking 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 picking arrangement in the automatic piecing unit.
  • Figure 2 shows side view of the yarn picking arrangement in the piecing unit, according to an embodiment of the present invention.
  • a yarn picking arrangement (100) for an automatic yarn piecing unit (10) to detach the broken yarn end (112) from a spinning cop (108) to enable automatic piecing operation in a textile ring spinning machine (20) comprising of a suction jet assembly comprises a hose (102) having a first end and a second end. The first end of the hose (102) is connected to a suction air source (not shown in figure), and the second end has a circumferential housing (104).
  • a driving means (106) is coupled with the suction jet assembly for moving the suction jet assembly vertically up and down.
  • the driving means (106) can be a pneumatic driving unit, or a hydraulic driving unit having piston and cylinder arrangement with actuators.
  • the drive means can also comprise of screw rod, cylinder and all types of actuating means.
  • the arrangement (100) includes a control apparatus functionally connected with driving means (106) comprising a control unit coupled with a plurality of sensors and stoppers for precisely controlling the movement of moving suction jet assembly so as to move the circumferential housing (104) vertically up and down such that the circumferential housing (104) is capable to stop anywhere around the cop (108) at the outer portion from top to bottom.
  • driving means (106) comprising a control unit coupled with a plurality of sensors and stoppers for precisely controlling the movement of moving suction jet assembly so as to move the circumferential housing (104) vertically up and down such that the circumferential housing (104) is capable to stop anywhere around the cop (108) at the outer portion from top to bottom.
  • driving means (106) comprising a control unit coupled with a plurality of sensors and stoppers for precisely controlling the movement of moving suction jet assembly so as to move the circumferential housing (104) vertically up and down such that the circumferential housing (104) is capable to stop anywhere around the cop (108) at the outer portion from top to bottom.
  • the suction air source generate
  • suction jet assembly of the yarn picking arrangement (100) is moved from drafting zone (114) to cop zone (116) such that a circumferential housing (104) of the suction jet assembly surrounds a cop (108).
  • the internal diameter of the hose (102) and/or the housing (104) of the suction jet assembly is such that substantially greater than the external diameter of the cop (108).
  • the corresponding figure 3 shows side view of the yarn picking arrangement of the piecing unit at cop zone (116) surrounding the cop (108) for picking the broken yarn end from the cop, according to an embodiment of the present invention.
  • suction air source generates a suction pull which pulls the broken yarn end (112) anywhere in the chase length from bottom to top of the cop (108) into the housing (104).
  • suction jet assembly is moved from cop zone (116) to drafting zone (114) to enable automatic piecing operation in a textile ring spinning machine (20).
  • Figure 4 shows side view of the yarn picking arrangement of the piecing unit at drafting zone after successful picking of the broken yarn end from the cop and for subsequent piecing operation according to an embodiment of the present invention.
  • the suction jet assembly comprising circumferential housing (104) surrounds the cop (108) at the outer portion while moving vertically from top to bottom. During which the suction jet assembly reaches a position adjacent to the Balloon Control ring (110) travelling around 100 mm downwards.
  • the moving suction jet assembly covers substantially at least 85 mm of the cop (108) height from the top and surrounds the cop (108) before reaching position adjacent to Balloon Control ring (110).
  • the inner diameter of the suction jet assembly is designed such that it is capable of surrounding the cop (108) for picking the broken yarn (112) effectively.
  • the movable suction jet assembly picks the tangled broken yarn (112) from the cop (108) successfully anywhere in the chase length even at the bottom of the chase length.
  • the distance between the Balloon Control ring (110) and the suction jet assembly while yarn picking is around 25 mm only for the bottom most ring rail position compared to that of the known arrangement which is around 125 mm.
  • the movable suction jet assembly mounted in the piecing unit can be moved forward through suitable drive means. Subsequently, the downward movement of the suction jet assembly for surrounding the cop is effected by pneumatic or hydraulic drive means mounted in the auto piecing unit.
  • the above described automatic piecing unit for ring spinning machine frame provides a reliable solution for picking the broken yarn end from the cop.
  • the suction jet which is movable vertically throughout the chase length of the cop is able to pick the broken yarn from the cop anywhere from bottom to top based on the broken yarn position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP19189586.1A 2018-09-11 2019-08-01 Agencement de prélèvement de fil d'un métier à filer à anneaux et procédé associé Pending EP3643819A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201841034136 2018-09-11

Publications (1)

Publication Number Publication Date
EP3643819A1 true EP3643819A1 (fr) 2020-04-29

Family

ID=67539252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19189586.1A Pending EP3643819A1 (fr) 2018-09-11 2019-08-01 Agencement de prélèvement de fil d'un métier à filer à anneaux et procédé associé

Country Status (2)

Country Link
EP (1) EP3643819A1 (fr)
CN (1) CN110886038A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807155A (en) * 1969-02-28 1974-04-30 Kanebo Ltd Method and apparatus for joining yarns
US3868813A (en) * 1973-02-01 1975-03-04 Heberlein Hispano Sa Device for winding-off yarn ends
US5090189A (en) * 1989-09-30 1992-02-25 Zinser Textilmaschinen Gmbh Method and apparatus for preparing a yarn package for a subsequent yarn restarting operation
EP0518029A1 (fr) * 1991-06-12 1992-12-16 Zinser Textilmaschinen GmbH Procédé et dispositif à chercher un bout de fil ou déposer un fil auxiliaire à un cops respectivement sur un cops ou une tube vide
EP3222761A1 (fr) * 2016-03-21 2017-09-27 Premier Evolvics PVT. Ltd. Dispositif et procédé de rattache de fil suite à une cassure dans une machine à filer à anneaux

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016117316A1 (de) * 2016-09-14 2018-03-15 Maschinenfabrik Rieter Ag Vorrichtung und Verfahren zum Absaugen eines Fadens von einer Spule
DE102016119542A1 (de) * 2016-10-13 2018-04-19 Saurer Germany Gmbh & Co. Kg Fadenspleißvorrichtung für eine Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807155A (en) * 1969-02-28 1974-04-30 Kanebo Ltd Method and apparatus for joining yarns
US3868813A (en) * 1973-02-01 1975-03-04 Heberlein Hispano Sa Device for winding-off yarn ends
US5090189A (en) * 1989-09-30 1992-02-25 Zinser Textilmaschinen Gmbh Method and apparatus for preparing a yarn package for a subsequent yarn restarting operation
EP0518029A1 (fr) * 1991-06-12 1992-12-16 Zinser Textilmaschinen GmbH Procédé et dispositif à chercher un bout de fil ou déposer un fil auxiliaire à un cops respectivement sur un cops ou une tube vide
EP3222761A1 (fr) * 2016-03-21 2017-09-27 Premier Evolvics PVT. Ltd. Dispositif et procédé de rattache de fil suite à une cassure dans une machine à filer à anneaux

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CN110886038A (zh) 2020-03-17

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