EP0581439A1 - Falschchallvorrichtung - Google Patents

Falschchallvorrichtung Download PDF

Info

Publication number
EP0581439A1
EP0581439A1 EP93304950A EP93304950A EP0581439A1 EP 0581439 A1 EP0581439 A1 EP 0581439A1 EP 93304950 A EP93304950 A EP 93304950A EP 93304950 A EP93304950 A EP 93304950A EP 0581439 A1 EP0581439 A1 EP 0581439A1
Authority
EP
European Patent Office
Prior art keywords
spindles
false twist
spindle
axis
twist apparatus
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Withdrawn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
EP93304950A
Other languages
English (en)
French (fr)
Inventor
Geoffrey Naylor
Philip Marsland Wilkinson
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.)
Rieter Scragg Ltd
Original Assignee
Rieter Scragg 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 Rieter Scragg Ltd filed Critical Rieter Scragg Ltd
Publication of EP0581439A1 publication Critical patent/EP0581439A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/082—Rollers or other friction causing elements with the periphery of at least one disc

Definitions

  • This invention relates to false twist apparatus, and more particularly to apparatus of the type in which three sets of friction discs are mounted on respective spindles which are located at the corners of an equilateral triangle, the discs of each set overlapping the discs of the other two sets so as to provide a zig zag helical path for a yarn to pass through the apparatus and be false twisted by contact with the rims of the discs.
  • One of the problems associated with apparatus of this type is that of threading the yarn into the apparatus.
  • One method by which an attempt has been made to overcome this problem is that of providing a threading device comprising movable tines or fingers which in moving guide the yarn into the centre of the apparatus.
  • An alternative method is that of moving at least one of the shafts relative to the others so that two sets of discs do not overlap each other, thereby providing a gap through which the yarn can be introduced into the centre of the apparatus, and then moving the shafts or shaft back into their operational positions when the yarn has been threaded.
  • This latter method can introduce another problem, in that either the use of a simple transmission belt arrangement coupling the three shafts for rotation is prevented, or means for maintaining the tension in the belt as the distance between the three shafts changes must be provided.
  • the invention provides a false twist apparatus comprising three sets of friction discs mounted on respective spindles, with first drive means connecting first and second spindles which are mounted for rotation about respective fixed, mutually substantially parallel axes, the third spindle is mounted on a movable support for rotation about a third axis which is substantially parallel with the first and second axes with second drive means connecting the first and third spindles, and the movable support is pivotal about a pivot axis substantially parallel with but spaced from the first axis to the opposite side thereof from the third axis, whereby the third spindle is movable between a disc operating position in which the three spindles are at the corners of an equilateral triangle with the three sets of discs mutually overlapping and a threading position in which the discs on the second and third spindles are mutually spaced to provide a threading gap therebetween.
  • first and second drive means provide that the three spindles rotate in the same direction at substantially the same speed.
  • the first and second drive means may comprise toothed belts.
  • the third axis when in the disc operating position may be equi-spaced from, but to the opposite side of, a plane containing the first axis and the pivot axis, as it is when in the threading position.
  • the first and second spindles may be mounted on a first support on which the movable support is pivotally mounted.
  • the first support may be mounted on a frame of textile machine for sliding movement between two unit operating positions providing for rotation of the spindles in opposite directions. In one of the unit operating positions a wharve on the first spindle contacts one side of a transmission belt, whilst in the other unit operating position a wharve on the second spindle contacts the other side of the transmission belt.
  • a false twist apparatus 10 comprising first, second and third sets of friction discs 11, 12, 13 mounted on respective first, second and third spindles 14,15,16.
  • First drive means in the form of a toothed belt 17 connects the first and second spindles 14,15
  • second drive means in the form of a toothed belt 18 connects the first and third spindles 14,16 so that the three spindles 14,15,16 rotate at the same speed in the same direction about first, second and third, substantially parallel, axes 19,20,21.
  • the three axes 19,20,21 lie at the corners of an equilateral triangle with the three sets of discs 11,12,13 in mutually overlapping disposition.
  • a yarn (not shown) travels through the apparatus 10 from an inlet guide 22 to an outlet guide 23 (see Fig 1) in a zig-zag helical path so as to be false-twisted and forwarded by the apparatus 10 in known manner.
  • First and second spindles 14,15 are mounted in a body 24 in which the axes 19,20 are fixedly located.
  • Third spindle 16 is mounted in a movable support 25 which is itself mounted on the body 24 so as to be pivotal about a pivot axis 26 which is substantially parallel with axes 19,20 and 21. This enables the third spindle 16 and the set of discs 13 thereon to be moved from the disc operating position referred to above to a threading position shown in broken lines in Figs 2 and 3.
  • the second and third sets of discs 12, 13, do not overlap each other, but are mutually spaced to provide a threading gap 27 therebetween (see Fig 2) through which a yarn may be introduced to the centre of the apparatus 10 by the threading tines 37 and the inlet guide 22 which are mounted by means of a post 38 to move with the movable support 25.
  • the pivot axis 26 is arranged in the body 24 so that the third axis 21 and the pivot axis 26 are on opposite sides of the first axis 19.
  • the third axis 21 when in the disc operating position is equi-spaced from, but on the opposite side of, the plane 28 containing the pivot axes 26 and the first axis 19, as it is when in the threading position, ie the angles A in Figs 2 and 3 are equal.
  • the belt 18 since the radius of the path of movement of the third spindle 16 is greater than the distance between the first and third axes 19, 21, the belt 18 will slacken slightly from its operating tension and then tighten to its operating tension as the third spindle 16 is moved from the disc operating position to the threading position. In consequence the slackening of the belt tension is kept to a minimum thereby minimising any transmission problems and maintaining the optimum belt life.
  • the body 24 is slidably mounted on a rail 29 (Fig 1) so that a wharve 30 on first spindle 14 can engage or disengage a transmission belt 31 extending along a textile machine on the frame 32 of which the rail 29 is mounted, whereby the apparatus may be driven or disengaged from the drive 31.
  • a wharve 30 on first spindle 14 can engage or disengage a transmission belt 31 extending along a textile machine on the frame 32 of which the rail 29 is mounted, whereby the apparatus may be driven or disengaged from the drive 31.
  • Such sliding movement of body 24 is effected by means of a handle 33 mounted on the rail 29 and having a cam surface 34 which engages the body 24.
  • a spring biases the body 24 so as to cause the wharve 30 to engage the transmission belt 31 when the handle 33 is lowered from the disengagement position shown in Fig 1.
  • a wharve 35 may be provided on second spindle 15, a second cam surface 36 provided, on the handle 33 and the spring position changed to bias the body 24 in the opposite direction so as to cause the wharve 35 to engage the transmission belt 31 to change the apparatus from Z twist to S twist if desired.
  • the sequence of the discs 11,12,13 as contacted by the yarn will also have to be changed to 11,13,12, as is well known in the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP93304950A 1992-07-29 1993-06-24 Falschchallvorrichtung Withdrawn EP0581439A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9216122 1992-07-29
GB929216122A GB9216122D0 (en) 1992-07-29 1992-07-29 False twist apparatus

Publications (1)

Publication Number Publication Date
EP0581439A1 true EP0581439A1 (de) 1994-02-02

Family

ID=10719499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93304950A Withdrawn EP0581439A1 (de) 1992-07-29 1993-06-24 Falschchallvorrichtung

Country Status (3)

Country Link
EP (1) EP0581439A1 (de)
JP (1) JPH0681235A (de)
GB (2) GB9216122D0 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003014445A2 (de) * 2001-08-10 2003-02-20 Saurer Gmbh & Co. Kg Falschdralltexturieraggregat und verfahren zum anlegen eines fadens in das falschdralltexturieraggregat
DE19832564B4 (de) * 1997-07-21 2008-06-26 Teijin Seiki Co. Ltd. Falschdrahtvorrichtung des motorgetriebenen Typs mit drei Spindeln und einer Mehrzahl Friktionsscheiben
WO2010014411A3 (en) * 2008-07-30 2010-04-01 Invista Technologies S.A R.L. Systems and methods of twisting and heat-setting yarn, and apparatus for twisting yarn and heat-setting yarn
CN102443908A (zh) * 2010-09-30 2012-05-09 吴江市银杉织造有限公司 加弹机压紧装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4235071A (en) * 1979-03-05 1980-11-25 Barmag Barmer Maschinenfabrik Aktiengesellschaft Yarn false twist apparatus
GB2058156A (en) * 1979-08-08 1981-04-08 Barmag Barmer Maschf Friction false twister
US4333308A (en) * 1979-10-25 1982-06-08 Fag Kugelfischer Georg Schafer & Co. False-twist system switchable between S-twist and Z-twist
GB2099465A (en) * 1981-05-30 1982-12-08 Kugelfischer G Schaefer & Co False-twisting apparatus for falsetwisting yarns

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3147088A1 (de) * 1981-11-27 1983-06-01 FAG Kugelfischer Georg Schäfer & Co, 8720 Schweinfurt Falschdrallvorrichtung
GB2121076B (en) * 1982-06-01 1985-11-06 Rieter Scragg Ltd Apparatus for false twisting yarn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4235071A (en) * 1979-03-05 1980-11-25 Barmag Barmer Maschinenfabrik Aktiengesellschaft Yarn false twist apparatus
GB2058156A (en) * 1979-08-08 1981-04-08 Barmag Barmer Maschf Friction false twister
US4333308A (en) * 1979-10-25 1982-06-08 Fag Kugelfischer Georg Schafer & Co. False-twist system switchable between S-twist and Z-twist
GB2099465A (en) * 1981-05-30 1982-12-08 Kugelfischer G Schaefer & Co False-twisting apparatus for falsetwisting yarns

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19832564B4 (de) * 1997-07-21 2008-06-26 Teijin Seiki Co. Ltd. Falschdrahtvorrichtung des motorgetriebenen Typs mit drei Spindeln und einer Mehrzahl Friktionsscheiben
WO2003014445A2 (de) * 2001-08-10 2003-02-20 Saurer Gmbh & Co. Kg Falschdralltexturieraggregat und verfahren zum anlegen eines fadens in das falschdralltexturieraggregat
WO2003014445A3 (de) * 2001-08-10 2003-11-27 Barmag Barmer Maschf Falschdralltexturieraggregat und verfahren zum anlegen eines fadens in das falschdralltexturieraggregat
WO2010014411A3 (en) * 2008-07-30 2010-04-01 Invista Technologies S.A R.L. Systems and methods of twisting and heat-setting yarn, and apparatus for twisting yarn and heat-setting yarn
US8528310B2 (en) 2008-07-30 2013-09-10 Invista North America S.ár.l. Systems and methods of twisting and heat-setting yarn, and apparatus for twisting yarn and heat-setting yarn
CN102171391B (zh) * 2008-07-30 2015-04-01 英威达技术有限公司 加捻和热定形纱线的系统和方法以及用于加捻纱线和热定形纱线的装置
CN102443908A (zh) * 2010-09-30 2012-05-09 吴江市银杉织造有限公司 加弹机压紧装置

Also Published As

Publication number Publication date
GB9216122D0 (en) 1992-09-09
GB9313176D0 (en) 1993-08-11
GB2269187A (en) 1994-02-02
JPH0681235A (ja) 1994-03-22

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