EP1614781A1 - machine de fausse torsion - Google Patents

machine de fausse torsion Download PDF

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Publication number
EP1614781A1
EP1614781A1 EP04015842A EP04015842A EP1614781A1 EP 1614781 A1 EP1614781 A1 EP 1614781A1 EP 04015842 A EP04015842 A EP 04015842A EP 04015842 A EP04015842 A EP 04015842A EP 1614781 A1 EP1614781 A1 EP 1614781A1
Authority
EP
European Patent Office
Prior art keywords
constant
torque
yarn
filament yarn
twist
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Withdrawn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
EP04015842A
Other languages
German (de)
English (en)
Inventor
Roland Dr. Moser
Klaus Meier
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.)
SSM Schaerer Schweiter Mettler AG
Original Assignee
SSM Schaerer Schweiter Mettler AG
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 SSM Schaerer Schweiter Mettler AG filed Critical SSM Schaerer Schweiter Mettler AG
Priority to EP04015842A priority Critical patent/EP1614781A1/fr
Priority to US11/172,362 priority patent/US20060005525A1/en
Priority to TW094122754A priority patent/TW200619441A/zh
Priority to JP2005197465A priority patent/JP2006022464A/ja
Priority to CNA2005100825185A priority patent/CN1718882A/zh
Priority to KR1020050060654A priority patent/KR20060049878A/ko
Publication of EP1614781A1 publication Critical patent/EP1614781A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • D02G1/06—Spindles
    • 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

Definitions

  • the invention relates to a yarn processing method for producing a fancy yarn of at least one filament yarn with the steps of feeding the filament yarn into a false-twist texturing unit, and producing twisting of the filament yarn with a twist density by transmitting an axial torque to the filament yarn by means of a false-twist texturing unit a swirl transmitter and a yarn processing machine for carrying out the method.
  • the texturing of filament yarns is known in the art.
  • the purpose of texturing is to produce from a plastic-like, flat and smooth multifilament yarn a curled and structured yarn which, due to its voluminous and bulky structure (Bausch), has a textile character.
  • the multifilament yarn (thread) is generally unwound from a spool, passed through a first delivery, then heated in a heater (primary heater) cooled on a cooling rail, passed through a swirl transmitter and a second delivery mechanism arranged behind it, a so-called deduction delivery then be wound up on a yarn package.
  • the swirl transmitter serves to temporarily turn up the multifilament yarn in one operation, i.
  • a friction twist generator as a swirl generator.
  • the filament yarn is driven directly by means of friction surfaces. Due to the smaller diameter of the thread compared to the spindle, ie to eg a disc of a disc friction unit, a high transmission ratio between the rotation of the disc and the twisting of the filament yarn is realized.
  • the three-axis disc friction unit is particularly well suited for this purpose.
  • a swirl generator therefore, mainly friction spin generators, in particular three-axis disk friction aggregates, but also so-called nip twisters, which transmit torque to the filament yarns by means of crossed belts, are used.
  • Such a disk friction unit is disclosed, for example, in DE 3743708 A1.
  • a nip twister is shown in JP 06184848 A.
  • the twist distribution by friction allows very high rotational and thus high production speeds. If the friction conditions between the filament yarns and the swirl generator vary, ie if process fluctuations or instabilities occur, then this leads to an irregular yarn structure or defects in the yarn and thus to quality losses in the yarn produced.
  • Such errors or disturbances can result, for example, from disturbances in the spinning, from uneven application or uneven adjustment of the spin finish on the thread surface, from temperature fluctuations during texturing or from contamination, for example in the heater and / or in the cooling rail.
  • the disturbances can cause a so-called ballooning of the yarn, which occurs especially at high rotational speeds. Ballooning the yarn results in an uncontrolled threadline and thread tension variations.
  • the thread can jump over the disc surface of the twister, for example.
  • This spin-slip leads to a rotation deficit within the spin zone, ie the twist density, ie the number of twists varies per unit length of the filament yarns.
  • the yarn to be processed can thereby pass in sections without twisting the twister.
  • the thread tension increases abruptly, which disturbs the balance of forces in the swirl generator. Zones are created in the thread without rotation. Besides, stretching values fluctuate, staining becomes insufficient. Texturing speeds of over 300 m / min are possible with friction twisters.
  • the heating and cooling zones in the texturing zone are adapted in length to these texturing speeds in order to still ensure sufficient heat-setting of the crimping.
  • a length of the texturing zone of a total of 5 to 6 m, the phenomenon of surging occurs particularly frequently in connection with the frictionally engaged friction twisters.
  • the generated torsional density can not be controlled very precisely, as a result of which the procedural production restriction of the surging, and thus the ballooning of the thread in the swirl zone with accompanying thread tension fluctuations, which in turn result in rotational fluctuations, occur.
  • the stability limit of the process is influenced on the one hand by the geometry of the texturing zone, eg its length, deflection points, thread support, etc., and on the other hand by the quality of the original material, eg its uniformity, preparation etc., ie by occurring process fluctuations.
  • the invention has for its object to provide a Garnbearbeitungsvon and a swirl generator for producing a fancy yarn by false-twist texturing, which avoids the disadvantages of the prior art and in particular avoids the phenomenon of Surgings.
  • the yarn processing method of the present invention for producing a fancy yarn of at least one filament yarn, after feeding the filament yarn into a false-twist texturing unit, twisting of the filament yarn with a twist density by transmitting an axial torque to the filament yarn by means of a twisting transducer generates the false-twist texturing unit.
  • the fluctuations in the process influencing the torsional density are compensated for by keeping the transmitted torque constant.
  • Friction twister according to the prior art are operated with a constant speed as possible, which is given as a setpoint relative to the production speed. Fluctuations in the coefficient of friction or in the thread tension thus always have an effect on fluctuations in the torque transmitted to the filament yarn to be processed. Since it is frictional elements in the swirlers, therefore, the introduction of a constant torque is much more useful.
  • a vertically acting force thus leads to a torque in the axial direction of the filament yarn.
  • “Actio equals Reactio” fluctuates at a radius variation of the filament yarn or poor power transmission because of a fluctuating coefficient of friction between the swirl, for example. a slice of a disc friction unit, and the filament yarn also has the force to drive e.g. the disc is necessary at constant rotational speed. The rotation of the disc is thus more or less slowed down. If, instead of the rotational speed of the swirl generator, the transmitted torque is kept constant, the same number of twists of the filament yarn per length of the filament yarn is constantly produced, i. the twist density remains constant. Therefore, process fluctuations, such as fluctuating thread tension, different thread radius, changing surface roughness of the thread etc. are compensated.
  • the transmitted torque is performed by controlling a power consumption of an electric motor driving the swirl generator, wherein preferably the electric current strength of the electric current flowing through the electric motor at a constant voltage is kept constant.
  • the electrical power consumed by an electric motor corresponds to the force that the electric motor, e.g. to use to turn a disk.
  • This power P is defined as the product of the applied electrical voltage U and the electric current flowing through the electric motor I. If a constant electrical voltage is applied, the power consumption and thus generated and transmitted torque can be adjusted and kept constant by controlling the electrical current become. This is a proven and reliable method, which can be realized by known electronic components.
  • the transmitted torque is measured by means of a torque sensor and a rotational speed of the swirl generator is controlled such that the torque is kept constant. This allows a direct control of torque transmission.
  • a false-twist texturing unit twisting device is arranged to generate twists of a filament yarn having a twisting density by transmitting an axial torque to the filament yarn.
  • constant holding means are provided, which are set up to compensate for fluctuations in the process influencing the rotational density by keeping the transmitted torque constant.
  • the constant torque introduction can be implemented with any friction twister, preferably the three-axis disk friction unit and the nip twister are used.
  • the swirl generator according to the invention therefore preferably comprises a disk friction unit or a nip twister. These swirlers are non-positive swirlers with which high process speeds, i. Yarn production speeds can be achieved.
  • An inventive twisting device can be realized, for example, by the use of a drive motor having a flat characteristic.
  • a drive motor follows in its performance independently existing decelerations, since its performance can not be adapted quickly.
  • a drive motor has the disadvantage that a control of the torque transmission is not possible.
  • a swirl generator according to the invention preferably has an electric motor arranged to drive it, wherein the constant-holding means are set up to keep the power consumption of the electric motor constant at constant voltage by keeping the electric current flowing through the electric motor constant.
  • This embodiment of the constant holding means is inexpensive to manufacture and reliable in its application.
  • the swirl generator also have a non-electric drive, such as a water or air turbine or an electrostatic drive or a gravitational drive.
  • the constant holding means of the swirl generator according to the invention comprise a torque sensor, wherein the constant holding means are adapted to measure the transmitted torque by means of the torque sensor and to control a rotational speed of the swirl generator, that the torque is kept constant.
  • the torque sensor By means of the torque sensor, a direct control of the torque transmission is possible.
  • a yarn processing machine according to the invention having at least one false-twist texturizing unit comprises a swirling device according to the invention.
  • FIG. 1 shows the yarn path in a yarn processing machine according to the invention.
  • the filament yarn 1 for example a partially oriented yarn (POY)
  • POY partially oriented yarn
  • the filament yarn 1 is stretched in the rotated state, heated by the primary heater 6, cooled again by the cooling rail 7 and then cooled by the swirl generator 9 by transmitting an axial torque to the Filament yarn 1 generated twist again dissolved.
  • the thread temperature should reach about 200 ° C.
  • the thread tension can be measured and evaluated behind the twister 9.
  • the turbulence 8 is usually carried out before a setting zone with a set heater 10, since it is so fixed in the set heater 10, the nodes are thus more stable.
  • a further delivery mechanism 11 is placed between the turbulence 8 and the set heater 10.
  • the desired bulk is achieved by thermofixing the yarn in a turned state.
  • very high rotation densities are required, which are between 2500 and 7000 m -1 .
  • fluctuations in the torque transmission caused by process fluctuations from the swirler 9 to the filament yarn 1 are particularly pronounced.
  • the swirl generator 9 comprises an electric motor 20 whose power is controlled.
  • the electric motor 20 is traversed by an electric current, which is controlled by constant-holding means 21. Since the electric motor 20 is connected to a voltage source 22, which provides a constant electrical voltage available, the electric current by means of the constant holding means kept constant, resulting in a constant electric power of the electric motor.
  • the electric motor 20 drives a rotating disk 24, which is in frictional contact with the filament yarn 1. It is thereby transmitted a torque on the filament yarn.
  • the torque is constant because the power of the electric motor is kept constant.
  • the constant-holding means 21 are thus arranged to compensate for the process density variations influencing the rotation density by keeping the transmitted torque constant.
  • Proposed is a yarn processing method for producing a fancy yarn of at least one filament yarn, comprising feeding the filament yarn into a false-twist texturing unit and generating twisting of the filament yarn with a twist density by transmitting an axial torque to the filament yarn by means of a false-twist texturing unit twisting device Swirl transmitter and a yarn processing machine for carrying out the method.
  • the fluctuations in the process influencing the torsional density are compensated for by keeping the transmitted torque constant.
  • the invention is not limited to the embodiments given above. Rather, a number of variants are conceivable, which make use of the features of the invention even with fundamentally different type of execution.
  • Proposed is a yarn processing method for producing a fancy yarn of at least one filament yarn, comprising feeding the filament yarn into a false-twist texturing unit and generating twisting of the filament yarn with a twist density by transmitting an axial torque to the filament yarn by means of a false-twist texturing unit twisting device Swirl transmitter and a yarn processing machine for carrying out the method.
  • the fluctuations in the process influencing the torsional density are compensated for by keeping the transmitted torque constant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP04015842A 2004-07-06 2004-07-06 machine de fausse torsion Withdrawn EP1614781A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP04015842A EP1614781A1 (fr) 2004-07-06 2004-07-06 machine de fausse torsion
US11/172,362 US20060005525A1 (en) 2004-07-06 2005-06-30 Method and false twist spindle for false twist texturing
TW094122754A TW200619441A (en) 2004-07-06 2005-07-05 Method and false twist spindle for false twist texturing
JP2005197465A JP2006022464A (ja) 2004-07-06 2005-07-06 仮撚テクスチャード加工方法および仮撚テクスチャード加工用の仮撚スピンドル
CNA2005100825185A CN1718882A (zh) 2004-07-06 2005-07-06 用于假捻变形的方法和假捻锭
KR1020050060654A KR20060049878A (ko) 2004-07-06 2005-07-06 가연가공방법 및 가연가공용 가연스핀들

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04015842A EP1614781A1 (fr) 2004-07-06 2004-07-06 machine de fausse torsion

Publications (1)

Publication Number Publication Date
EP1614781A1 true EP1614781A1 (fr) 2006-01-11

Family

ID=34925632

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04015842A Withdrawn EP1614781A1 (fr) 2004-07-06 2004-07-06 machine de fausse torsion

Country Status (6)

Country Link
US (1) US20060005525A1 (fr)
EP (1) EP1614781A1 (fr)
JP (1) JP2006022464A (fr)
KR (1) KR20060049878A (fr)
CN (1) CN1718882A (fr)
TW (1) TW200619441A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104726991A (zh) * 2015-04-10 2015-06-24 东华大学 一种假捻变形花式纱机及其加工方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9912001B2 (en) * 2013-08-07 2018-03-06 Massachusetts Institute Of Technology Extruder feed system
DE102014107137A1 (de) * 2014-05-21 2015-11-26 Maschinenfabrik Rieter Ag Spinnmaschine
JP7128574B2 (ja) * 2018-03-16 2022-08-31 Ｔｍｔマシナリー株式会社 仮撚加工機
DE102019004302A1 (de) * 2019-05-29 2020-12-03 Detlef Görgens Antriebseinheit, mit fadenspannungsgesteuerter Spindeldrehzahl des Falschzwirnkräuselaggregats in einer Texturiermaschine
JP7489188B2 (ja) * 2019-12-09 2024-05-23 Ｔｍｔマシナリー株式会社 糸条ハンドリング装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837164A1 (fr) * 1996-10-17 1998-04-22 Murata Kikai Kabushiki Kaisha Dispositif pour conférer une fausse torsion à un fil
WO2003029538A2 (fr) * 2001-09-27 2003-04-10 Saurer Gmbh & Co. Kg Dispositif de fausse torsion par friction et procede de fonctionnement d'un dispositif de fausse torsion par friction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0796730B2 (ja) * 1992-08-31 1995-10-18 村田機械株式会社 仮撚装置
JP3147024B2 (ja) * 1997-03-07 2001-03-19 村田機械株式会社 仮撚り装置
JP3147067B2 (ja) * 1997-12-25 2001-03-19 村田機械株式会社 単錘駆動型の繊維機械
JP3196712B2 (ja) * 1998-02-26 2001-08-06 村田機械株式会社 仮撚加工機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837164A1 (fr) * 1996-10-17 1998-04-22 Murata Kikai Kabushiki Kaisha Dispositif pour conférer une fausse torsion à un fil
WO2003029538A2 (fr) * 2001-09-27 2003-04-10 Saurer Gmbh & Co. Kg Dispositif de fausse torsion par friction et procede de fonctionnement d'un dispositif de fausse torsion par friction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104726991A (zh) * 2015-04-10 2015-06-24 东华大学 一种假捻变形花式纱机及其加工方法

Also Published As

Publication number Publication date
TW200619441A (en) 2006-06-16
KR20060049878A (ko) 2006-05-19
CN1718882A (zh) 2006-01-11
JP2006022464A (ja) 2006-01-26
US20060005525A1 (en) 2006-01-12

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