EP0670381B1 - Zwirnverfahren und Zwirnvorrichtung - Google Patents

Zwirnverfahren und Zwirnvorrichtung Download PDF

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Publication number
EP0670381B1
EP0670381B1 EP95102916A EP95102916A EP0670381B1 EP 0670381 B1 EP0670381 B1 EP 0670381B1 EP 95102916 A EP95102916 A EP 95102916A EP 95102916 A EP95102916 A EP 95102916A EP 0670381 B1 EP0670381 B1 EP 0670381B1
Authority
EP
European Patent Office
Prior art keywords
yarn
fluctuation
twist
twisting
yarns
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.)
Expired - Lifetime
Application number
EP95102916A
Other languages
English (en)
French (fr)
Other versions
EP0670381A1 (de
Inventor
Toshimitsu Musha
Yuichi C/O Nisshinbo Ind. Inc. Miai Yanai
Yuki C/O Nisshinbo Ind. Inc. Miai Niwa
Yasuo C/O Nisshinbo Ind. Inc. Miai Nakano
Kazuyoshi C/O Nisshinbo Ind. Inc. Osaka Muraoka
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.)
Nisshinbo Holdings Inc
Original Assignee
Nisshinbo Industries Inc
Nisshin Spinning Co 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 Nisshinbo Industries Inc, Nisshin Spinning Co Ltd filed Critical Nisshinbo Industries Inc
Publication of EP0670381A1 publication Critical patent/EP0670381A1/de
Application granted granted Critical
Publication of EP0670381B1 publication Critical patent/EP0670381B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/006—Twisting machines in which twist is imparted at the paying-out and take-up stations
    • 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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • 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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns

Definitions

  • the invention relates to twisting yarn in general, and in particular to a twisting method and a twisting frame for such a twisting method.
  • the German patent publication DE-C-37 147 14 discloses a device for controlling the twisting of three yarns to perform a roving.
  • the three yarns are provided by separate supply means operating at different speeds, the length of each yarn in the twisted roving being different.
  • the twisting onto a spindle is controlled by a predetermined operation program.
  • the slowest running supply means for the shortest yarn to be twisted is taken as the control parameter for determining the length of the yarn.
  • the object underlying the present invention is to provide a twisting method and a twisting frame capable of producing yarns having a natural feeling of comfort to human beings.
  • a twisting method and a twisting frame are provided as defined in claims 1 and 2.
  • Yarn can be manufactured on an industrial scale wherein the twist of the yarn does not vary randomly. Rather, the variations have a distribution in particular a 1/f fluctuation resulting in the effect that the yarn will have a natural feeling of unevenness.
  • the expression "1/f fluctuation" is defined and understood as a power spectrum with a frequency component f, and it is proportional to 1/f k , wherein k is approximately 1.
  • a twist is applied to a single yarn or a plurality of yarns, wherein the twist is applied to the yarn or the yarns by setting the twist count to correspond to the strengths of serial signals having a 1/f fluctuation.
  • a feed roller that draws the yarn or the yarns
  • a spindle that receives the yarn or the yarns fed from the feed roller. Then, a twist count having a 1/f fluctuation is applied to the yarn or the yarns by setting the rotational speed of the feed roller or the spindle to correspond to the strengths of serial signals having a 1/f fluctuation.
  • the twist count having a 1/f fluctuation is applied to the yarn or the yarns by setting the rotational speed of both the feed roller and the spindle to correspond to the strengths of serial signals having a 1/f fluctuation.
  • the twist of the yarn manufactured thereby does not change randomly, rather the change has a specific distribution with a 1/f fluctuation imparting a special feeling of comfort and aesthetic beauty to the wearer.
  • woven goods or knit goods using such a yarn also have a 1/f fluctuation. It is due to this 1/f fluctuation in the twist that the goods are characterized by a particularly comfortable feel and, subsequent to dyeing, by colour density variations, which again impart a special feeling of comfort and aesthetic beauty to the wearer.
  • the twist of the yarn 11 will vary with a correlation having a 1/f fluctuation making it possible to manufacture - in large quantities using mechanical equipment - a yarn having a feel similar to yarn spun by hand.
  • spun yarn and/or filaments may be used as a yarn 11.
  • a twisting frame 1 as shown in the embodiment of Fig. 1 is a device to twist yarn by applying a twist to a single yarn or a plurality of yarns 11.
  • the twisting frame 1 is provided with a plurality of motors, for example a feed motor 21 and a spindle motor 22 each of which can be controlled independently.
  • the feed motor 21 is used to drive feed rollers 31.
  • the rotational speed of feed rollers 31 can be determined, for example, by imparting a prescribed rotational speed to the feed roller or feed rollers 31 via belts and/or gears (not shown in detail), and adjusting the size and number of gears. Also, an arbitrary rotational speed can be imparted to a spindle or spindles 41 by rotating a tin roller 32 by means of the spindle motor 22.
  • These motors 21 and 22 can also be used in common, where necessary, and the rotational speed of the rollers 31 and 32 can be adjusted using converters, such as belts and/or gears.
  • the feed roller or the feed rollers 31 have a prescribed rotational speed, and they draw out a single yarn or a plurality of yarns 11 together.
  • the yarn 11 is drawn out by being pinched and rotated by the feed roller or rollers 31.
  • the drawing speed of the yarn 11 is determined by the diameter and the rotational speed of the respective feed roller 31.
  • the rotation of the respective spindle imparts a twist to the yarn 11 fed from the feed roller 31, and subsequently the yarn 11 is wound onto bobbins.
  • the degree of twist is set for the yarn to be able to withstand downstream processes, generally weaving or knitting and to affect the hand of finished woven fabrics or knitted goods.
  • the twist count increases as the twist coefficient increases, forming yarn with a hard hand, and the twist count decreases as the twist coefficient decreases, forming a bulky yarn with soft hand.
  • the twist coefficient will be 2,5 to 4,5.
  • the twist coefficient is set to be constant, and the twist count is set to correspond to the yarn count.
  • the twist is determined by the length of the yarn fed from the feed roller 31 and by the number of twists imparted over the length. Therefore, the twist can be modified by keeping either parameter constant and varying the other.
  • the feed from the feed roller 31 can be kept constant while increasing the rotation of the spindle 41.
  • the rotation of the spindle 41 can be kept constant while reducing the feed from the feed roller 31. The same result will be achieved in either case.
  • the gurgling of a stream, a soft and gentle breeze, and other phenomena that impart a comfortable feeling to human beings have a 1/f fluctuation, whereas typhoons and other strong winds that impart uneasiness do not have a 1/f fluctuation.
  • Fig. 2 is a block diagram in order to illustrate the motor control.
  • a controller 6 receives signals from a feed motor setter and spindle-motor setter 61, a 1/f-fluctuation signal generator 62 and a twist count setter 63. These signals are processed by the controller 6 which is connected to drivers 64 which control the respective motors, namely the feed motor 21 and the spindle motor 22. Also, the feed motor 21 and the spindle motor 22 are provided with a corresponding speed detector 25 from which feedback signals are supplied to the corresponding drivers 64 allowing the respective rotational speed to be controlled.
  • the feed motor setter and spindle motor setter 61 set the speed of each motor 21 and 22, respectively, to a prescribed value. By determining a 1/f fluctuation signal from the 1/f fluctuation signal generator 62 based upon these prescribed speed values, a 1/f fluctuation can be imparted to the rotational speed of the respective motors 21 and 22. In addition, when the number of twists of the yarn 11 is set by using the twist count setter 63 of the yarn 11, a yarn 11 having a 1/f fluctuation based on this twist count will be spun.
  • the 1/f fluctuation signal is determind from y 1 , y 2 , y 3 , ... formed by calculating n coefficients a 1 , a 2 , a 3 , ... an in a sequence of random numbers x 1 , x 2 , x 3 , ... .
  • y j can be expressed by equation (2) indicated below. It should be noted that the sequence of numerical values forming y 1 , y 2 , y 3 , ... has a 1/f spectrum. For further details, reference is made to Seitai shingô (Biological Signaling), chapter 10, "Biological Rhythms and Fluctuations", published by Corona Publishers, Ltd..
  • the 1/f fluctuation signal generator 62 shown in Fig. 2 operates as follows. In a first step, a sequence-of random numbers is generated using, for example, a computer. In a second step, this sequence of random numbers is stored in a storage device, wherein a certain number n of coefficients a is successively calculated, and then a sequence of numerical values y is obtained by a linear transformation.
  • This numerical sequence has a 1/f spectrum; hence it is converted into an electrical signal as a 1/f fluctuation signal and output as a motor control signal.
  • large values in the numerical sequence can be set to correspond to a high electric potential to increase the speed of the respective motor, thereby creating a larger number of twists.
  • Other methods can also be employed, such as a numerical control to control the rotational frequency of the respective motors using values from the numerical sequence. If the inertia of the motors and other components of the control system of the twisting frame 1 is large, the twist can also be applied by reducing the level of the 1/f fluctuation control signal, as necessary.
  • the twist can be made to vary by setting the rotation of the spindle 41 to be constant and controlling the feed motor 21 which drives the respective speed roller 31. For example, if a 1/f fluctuation is imparted to the speed at which the yarn 11 is taken up by the feed roller 31, the twist of the yarn 11 will vary between tight and loose, and this variation will have the characteristics of 1/f fluctuation.
  • the take-up speed of this feed roller 31 can be adjusted by controlling the rotational speed of the feed motor 21. Therefore, by applying a 1/f fluctuation signal to the rotational speed of the feed motor 21 and using the rotation of the spindle 41 to change the twist of the yarn 11, a 1/f fluctuation is applied to the twist of the yarn 11.
  • a twist varying with a 1/f fluctuation can also be applied to the yarn 11 by keeping the rotation of the feed motor 21 and therefore the rotation of the feed roller 31 constant and applying a 1/f fluctuation signal to the rotational control of the spindle motor 22 which in turn drives the tin roller 32 and therefore controls the rotation of the spindles 41.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (3)

  1. Zwirnverfahren, das das Zuführen und Zwirnen eines einzelnen Garns (11) oder mehrerer Garne (11) beinhaltet,
    gekennzeichnet durch
    ein Zwirnen des Garns oder der Garne (11), indem man die Drehungsanzahl zum Zwirnen so einstellt, daß sie den Stärken von seriellen Signalen entspricht, die eine 1/f-Fluktuation aufweisen.
  2. Garnzwirnmaschine, um einem einzelnen Garn oder mehreren Garnen (11) eine Verzwirnung zu erteilen, wobei die Maschine folgendes aufweist:
    eine Zuführungswalze (31), die zum Zuführen des Garns oder der Garne (11) ausgebildet ist;
    eine Spindel (41), die zum Aufnehmen des Garns oder der Garne (11) von der Zuführungswalze (31) ausgebildet ist;
    Steuereinrichtungen (6; 61; 64) zum Steuern der Rotationsgeschwindigkeit der Zuführungswalze (31) und der Spindel (41),
    dadurch gekennzeichnet,
    daß ein 1/f-Fluktuationssignal-Generator (62) vorgesehen ist, um eine Reihe von Signalen mit einer 1/f-Fluktuation zu erzeugen,
    daß die Steuereinrichtungen (6, 61, 64) dazu ausgelegt sind, die Rotationsgeschwindigkeit entweder von der Zuführungswalze (31) oder der Spindel (41) in Abhängigkeit von der Stärke der Signale einzustellen, um dadurch dem Garn oder den Garnen (11) zum Zwirnen eine Drehungsanzahl mit einer 1/f-Fluktuation zu erteilen.
  3. Zwirnmaschine nach Anspruch 2,
    dadurch gekennzeichnet,
    daß die Steuereinrichtungen (6, 61, 64) dazu ausgebildet sind, die Rotationsgeschwindigkeit sowohl von der Zuführungswalze (31) als auch von der Spindel (41) in Abhängigkeit von der Stärke der Reihe von Signalen einzustellen.
EP95102916A 1994-03-03 1995-03-01 Zwirnverfahren und Zwirnvorrichtung Expired - Lifetime EP0670381B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58178/94 1994-03-03
JP6058178A JP2964061B2 (ja) 1994-03-03 1994-03-03 撚糸方法及び撚糸機

Publications (2)

Publication Number Publication Date
EP0670381A1 EP0670381A1 (de) 1995-09-06
EP0670381B1 true EP0670381B1 (de) 1998-12-09

Family

ID=13076755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95102916A Expired - Lifetime EP0670381B1 (de) 1994-03-03 1995-03-01 Zwirnverfahren und Zwirnvorrichtung

Country Status (7)

Country Link
EP (1) EP0670381B1 (de)
JP (1) JP2964061B2 (de)
KR (1) KR100229986B1 (de)
CN (1) CN1078914C (de)
DE (1) DE69506459T2 (de)
HK (1) HK1011055A1 (de)
TW (1) TW368527B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2860455B2 (ja) * 1995-07-18 1999-02-24 日清紡績株式会社 混紡機
CN106811838A (zh) * 2015-11-30 2017-06-09 衡阳腾飞内衣有限公司 一种内衣纺织用捻线机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5719806A (en) * 1980-07-09 1982-02-02 Toyota Central Res & Dev Lab Inc Fluctuation driving device
JPS58112822A (ja) * 1981-12-26 1983-07-05 Toyota Central Res & Dev Lab Inc 自動車用フアンコントロ−ラ
JPS61186534A (ja) * 1985-02-13 1986-08-20 Murata Mach Ltd 紡績糸の製造方法
DE3714714C1 (en) * 1987-05-02 1988-08-18 Saurer Allma Gmbh Apparatus for controlling a fancy-yarn twisting or spinning machine

Also Published As

Publication number Publication date
KR950032760A (ko) 1995-12-22
JPH07243137A (ja) 1995-09-19
JP2964061B2 (ja) 1999-10-18
CN1078914C (zh) 2002-02-06
HK1011055A1 (en) 1999-07-02
TW368527B (en) 1999-09-01
DE69506459T2 (de) 1999-08-05
CN1117537A (zh) 1996-02-28
KR100229986B1 (ko) 1999-11-15
DE69506459D1 (de) 1999-01-21
EP0670381A1 (de) 1995-09-06

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