EP0439183A1 - Procédé pour surveiller la force de traction d'un fil - Google Patents

Procédé pour surveiller la force de traction d'un fil Download PDF

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Publication number
EP0439183A1
EP0439183A1 EP91100967A EP91100967A EP0439183A1 EP 0439183 A1 EP0439183 A1 EP 0439183A1 EP 91100967 A EP91100967 A EP 91100967A EP 91100967 A EP91100967 A EP 91100967A EP 0439183 A1 EP0439183 A1 EP 0439183A1
Authority
EP
European Patent Office
Prior art keywords
signal
thread
value
friction
thread tension
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.)
Granted
Application number
EP91100967A
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German (de)
English (en)
Other versions
EP0439183B1 (fr
Inventor
Hellmut Lorenz
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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Filing date
Publication date
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Application filed by Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0439183A1 publication Critical patent/EP0439183A1/fr
Application granted granted Critical
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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
    • D02G1/0206—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 by false-twisting
    • D02G1/0266—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 by false-twisting false-twisting machines

Definitions

  • the invention relates to a method for monitoring the thread tension according to the preamble of claim 1. This method is known from EP 207 471 A1.
  • the object of the invention is to control the twist on the one hand, but on the other hand, by thread tension measurement to still be able to carry out quality monitoring by measuring the tensile force.
  • twist transmission of the false twister is understood to mean the magnitude of the frictional force of the false twister on the thread and / or the division of the frictional force into the twist-giving component and the promoting component.
  • the invention succeeds in combining the quality-increasing measure of a regulated thread tension with a time-constant mean value and the quality-relevant detection of changes in friction force.
  • a friction false twister which consists of three axes arranged on the corners of an isosceles triangle with spanned disks that overlap in the center of the triangle, is characterized in particular for the implementation of the method by the characterizing features of claim 3, second alternative.
  • the axes can be adjusted in particular by mounting two axes on eccentrics, which can be adjusted by a drive device.
  • the figure shows a schematic representation of a processing point of a false twist crimping machine.
  • the synthetic thread 1 is drawn off from the supply spool 2 by the input delivery unit 3.
  • the texturing zone is formed between the input delivery unit 3 and the take-off delivery unit 9. It mainly comprises a heating rail 4, a cooling rail 5 and the friction false twister 6.
  • the friction false twister has endlessly moving surfaces which are moved transversely to the thread axis and against which the thread lies. These surfaces give the thread a twist in the direction of the input delivery unit, which dissolves again in the direction of the output delivery unit 9.
  • a thread tension measuring instrument 8 is arranged, by means of which the thread tension, also called “thread tension”, is measured and passed on as an output signal. It should be noted that after the starting delivery unit 9 there is a winding or an intermediate treatment by heating.
  • the long-term value LW is fed to a control device 12 together with a target value.
  • the target value and the long-term value are compared with one another and converted into an adjustment variable VS.
  • the adjusting variable VS adjusts an actuator 7, by means of which the twist transmission of the friction false twister 6 onto the thread is controlled.
  • the output signal Z of the tensile force meter 8 as well as the adjustment signal VS of an evaluation device 10 are given.
  • the adjustment signal VS represents the mean value.
  • the monitoring of the adjustment signal within certain limits thus replaces the monitoring of the mean value according to this invention.
  • the evaluation device 10 delivers an evaluation of the current output signal Z, which represents the currently measured thread tension according to the principles described in EP 207 471 A1. This means that an upper limit value and a lower limit value for the adjustment signal VS are stored in the evaluation device 10 (GOVS, GUVS). If the adjustment signal VS exceeds one of these limit values, an alarm signal is issued.
  • the difference value DU between the current output signal Z and the adjustment signal VS - after both have previously been converted into compatible, comparable quantities - is formed in the evaluation device 10.
  • the upper limit value and the lower limit value of this difference signal DU are stored in the evaluation device 10, and an alarm signal A occurs when the difference signal DU between the adjustment signal and the currently measured output signal Z exceeds one of the limit values GODU, GUDU .
  • the adjusting device 7 can be the drive motor of the friction false twister, for example.
  • the device 12 converts the difference signal from the long-term value and the desired value into a variable, for example into a frequency, which determines the rotational speed of the drive motor 7 of the friction false twister designed as a synchronous motor or as an asynchronous motor.
  • the adjusting device 7 can alternatively or additionally adjust the center distance, e.g. the axes are each supported on an eccentric and the eccentrics are rotated accordingly depending on the adjustment signal VS (cf. DE-AS 21 30 550).
  • the adjustment signal (VS) is to be output as electrical current by the control device 12.
  • this electric current is fed to the electromagnet and determines the frictional force that is exerted on the thread.
  • This current is also responsible for the fact that the thread tension can fluctuate only briefly and - measured over a longer period - is adjusted to the setpoint specified by the control device (R).
  • this electrical current is used to determine other errors, such as those mentioned above.
  • the electrical current and the current measured value - after conversion into comparable signal quality - are compared with one another and it is determined whether the current measured value leaves a predefined tolerance band for the electrical current and / or it is determined when the electrical current leaves a predefined second tolerance band .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
EP91100967A 1990-01-26 1991-01-25 Procédé pour surveiller la force de traction d'un fil Expired - Lifetime EP0439183B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4002211 1990-01-26
DE4002211 1990-01-26
DE4005074 1990-02-17
DE4005074 1990-02-17

Publications (2)

Publication Number Publication Date
EP0439183A1 true EP0439183A1 (fr) 1991-07-31
EP0439183B1 EP0439183B1 (fr) 1994-04-27

Family

ID=25889413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91100967A Expired - Lifetime EP0439183B1 (fr) 1990-01-26 1991-01-25 Procédé pour surveiller la force de traction d'un fil

Country Status (5)

Country Link
US (1) US5146739A (fr)
EP (1) EP0439183B1 (fr)
DE (1) DE59101465D1 (fr)
ES (1) ES2051528T3 (fr)
RU (1) RU2043630C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329136A1 (de) * 1992-08-31 1994-03-03 Murata Machinery Ltd Falschdrahtvorrichtung und Verfahren zur Steuerung derselben
DE4435923B4 (de) * 1993-10-19 2008-01-24 Oerlikon Textile Gmbh & Co. Kg Vorrichtung und Verfahren zum gleichmäßigen Texturieren eines laufenden Fadens

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW354078U (en) * 1991-01-17 1999-03-01 Barmag Barmer Maschf Apparatus for monitoring the tension of an advancing yarn
GB9202397D0 (en) * 1992-02-05 1992-03-18 British Tech Group Texturing yarn
EP0555639B1 (fr) * 1992-02-10 1995-04-05 Barmag Ag Procédé pour le réglage de la force de tension des fils en mouvement sur une machine à texturer par fausse torsion
DE69325635T2 (de) * 1992-12-31 1999-10-28 Zellweger Uster, Inc. Verfahren zur optimalen Überwachung von Fiberbehandlungsvorrichtungen
EP0751244B1 (fr) * 1995-06-30 2007-08-08 Oerlikon Textile GmbH & Co. KG Procédé pour le réglage de la force de tension de fil
JP3147024B2 (ja) * 1997-03-07 2001-03-19 村田機械株式会社 仮撚り装置
JP3147027B2 (ja) * 1997-03-14 2001-03-19 村田機械株式会社 合糸仮撚り機における張力制御システム
JP3331356B2 (ja) * 1998-06-12 2002-10-07 村田機械株式会社 毛羽制御装置による張力制御方法
US6163733A (en) * 1999-04-06 2000-12-19 Rubel; Laurence P. Monitor and malfunction predictor for textile machines
DE102006040065A1 (de) * 2006-08-26 2008-02-28 Oerlikon Textile Gmbh & Co. Kg Verfahren zur thermischen Behandlung eines laufenden Garns sowie Zwirnmaschine zur Durchführung des Verfahrens
WO2008151454A1 (fr) * 2007-06-13 2008-12-18 Uster Technologies Ag Dispositif et procédé de contrôle d'un fil
CN105274723B (zh) * 2015-10-26 2017-03-29 武汉纺织大学 一种多毛羽纱线的超光洁纬编针织方法
DE102017130516A1 (de) * 2017-12-19 2019-06-19 Maschinenfabrik Rieter Ag Verfahren zur Messung der Zugspannung eines Fadens und Vorrichtung zur Auslenkung eines laufenden Fadens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD108127A1 (fr) * 1973-08-28 1974-09-05
DE3306594A1 (de) * 1982-05-21 1983-11-24 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Verfahren zum falschzwirntexturieren
EP0207471B1 (fr) * 1985-07-03 1991-12-11 Barmag Ag Procédé pour surveiller la qualité d'un fil en défilement

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3613347A (en) * 1970-05-08 1971-10-19 Turbo Machine Co Yarn twist measuring instrument
DE2213147C3 (de) * 1972-03-17 1979-07-19 Kugelfischer Georg Schaefer & Co, 8720 Schweinfurt Falschdrallvorrichtung
US4015414A (en) * 1974-06-12 1977-04-05 The Warner & Swasey Textile Machine Company Monitored twist control apparatus and method
US4144700A (en) * 1976-12-14 1979-03-20 Murata Kikai Kabushiki Kaisha False twisting apparatus
JPS5390451A (en) * 1977-01-21 1978-08-09 Toshiba Machine Co Ltd Apparatus for falseetwisting
DE3066049D1 (en) * 1979-07-14 1984-02-09 Barmag Barmer Maschf Apparatus for false-twisting yarns, and application of this apparatus to make a yarn
US4424664A (en) * 1979-07-14 1984-01-10 Barmag Barmer Maschinenfabrik Ag Friction false twist apparatus
US4383405A (en) * 1980-09-08 1983-05-17 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus and method
US4445322A (en) * 1981-02-23 1984-05-01 Milliken Research Corporation Apparatus to measure yarn tension
US4384494A (en) * 1981-08-24 1983-05-24 Milliken Research Corporation Belt tension detector
DE3245574C2 (de) * 1982-12-09 1985-10-03 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Verfahren zum Überwachen des Texturiervorgangs bei einem Friktionsfalschdrall-Aggregat
CH662827A5 (de) * 1983-02-25 1987-10-30 Barmag Barmer Maschf Falschzwirnvorrichtung.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD108127A1 (fr) * 1973-08-28 1974-09-05
DE3306594A1 (de) * 1982-05-21 1983-11-24 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Verfahren zum falschzwirntexturieren
EP0207471B1 (fr) * 1985-07-03 1991-12-11 Barmag Ag Procédé pour surveiller la qualité d'un fil en défilement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329136A1 (de) * 1992-08-31 1994-03-03 Murata Machinery Ltd Falschdrahtvorrichtung und Verfahren zur Steuerung derselben
DE4329136C2 (de) * 1992-08-31 1999-11-11 Murata Machinery Ltd Verfahren und Vorrichtung zum Regeln der Fadenspannung an Falschdrahtvorrichtungen
DE4435923B4 (de) * 1993-10-19 2008-01-24 Oerlikon Textile Gmbh & Co. Kg Vorrichtung und Verfahren zum gleichmäßigen Texturieren eines laufenden Fadens

Also Published As

Publication number Publication date
US5146739A (en) 1992-09-15
DE59101465D1 (de) 1994-06-01
ES2051528T3 (es) 1994-06-16
RU2043630C1 (ru) 1995-09-10
EP0439183B1 (fr) 1994-04-27

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