EP0587829B1 - Verfahren und vorrichtung zur regelung des verzugs eines streckwerks - Google Patents

Verfahren und vorrichtung zur regelung des verzugs eines streckwerks Download PDF

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Publication number
EP0587829B1
EP0587829B1 EP93903777A EP93903777A EP0587829B1 EP 0587829 B1 EP0587829 B1 EP 0587829B1 EP 93903777 A EP93903777 A EP 93903777A EP 93903777 A EP93903777 A EP 93903777A EP 0587829 B1 EP0587829 B1 EP 0587829B1
Authority
EP
European Patent Office
Prior art keywords
speed
unit
motor
draw
sliver
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.)
Revoked
Application number
EP93903777A
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German (de)
English (en)
French (fr)
Other versions
EP0587829A1 (de
Inventor
Hansjörg RUTZ
François BAECHLER
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.)
Zellweger Luwa AG
Original Assignee
Zellweger Luwa 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4193159&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0587829(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Zellweger Luwa AG filed Critical Zellweger Luwa AG
Publication of EP0587829A1 publication Critical patent/EP0587829A1/de
Application granted granted Critical
Publication of EP0587829B1 publication Critical patent/EP0587829B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32—Regulating or varying draft

Definitions

  • the present invention relates to a method according to the preamble of patent claim 1 and a device according to the preamble of patent claim 8.
  • CH-A-650 280 describes a line which has a separate drive motor for each pair of rollers, the speed of which can be set by a frequency divider.
  • a computer containing an input device and a display device calculates the speed ratios for the motors in accordance with the input data and adjusts the distance accordingly.
  • the computer can also be assigned a measuring device for the fineness of the sliver, from whose measuring signal an unevenness signal characterizing the unevenness of the sliver can be derived.
  • DE-A-41 03 525 shows a device for drawing fiber slivers, in which a fiber sliver is guided and stretched by pairs of rollers, each of which is obtained directly from a motor driven roller and consist of a moving pressure roller driven over the sliver.
  • a speed sensor is arranged on each pressure roller and connected to a control and regulating device.
  • the motors for the directly driven rollers are controlled by the control and regulating device.
  • errors or deviations that are justified in the drive system of the rollers themselves are only recorded via their effects on the sliver and thus, if at all, with a time delay.
  • the invention is now to specify a draft regulation which enables a quick reaction to fluctuations in draft, in which the necessary corrections are as simple as possible, and which enables operation to be as drift-free as possible.
  • the method according to the invention is based on the forward compensation, which is also referred to as the setpoint feedforward control.
  • the forward compensation which is also referred to as the setpoint feedforward control.
  • the system is independent of drift. The system has no overall drift because any drift in individual components is corrected for.
  • the invention further relates to a device for regulating the draft of a drafting system with roller pairs and drive motors assigned to the roller pairs, with a control unit for setting the distance, with means for measuring the belt speed via the rotational speeds of driven roller pairs which are connected to the control unit, in which the measured belt speeds are evaluated,
  • the device according to the invention is characterized by a constant warping field and a variable warping field to which two drive motors (5, 6) are assigned, by first and second means (12, 13) for measuring the belt speed at the infeed and outfeed of the drafting system and by a control motor (5) as one of the two drive motors of the variable delay field, which is controlled by the control unit.
  • a drafting device of a two-headed section for duplicating or drawing fiber slivers is shown, to which two groups of fiber slivers are fed in the direction of arrows VI and which delivers two fiber slivers at its output (arrows VA).
  • the arrangement of two deliveries is not essential to the invention and the invention is not limited to routes of this type.
  • the drafting system 1 consists, as shown, of three pairs of rollers 2, 3 and 4, a preliminary draft field VV being formed between the front pairs of rollers 2 and 3 in the direction of travel of the fiber slivers (arrows VA and VI), and a main drafting zone HV being formed between the rear pairs of rollers 3 and 4 in the direction of advance is.
  • a drive motor 5 or 6 is assigned to both the pre-delay field VV and the main delay field HV.
  • the drive motor 5 for the pre-drafting field VV drives one of its two pairs of rollers, according to the illustration the pair of rollers 2 at the inlet, directly, which in turn is mechanically coupled to the other pair of rollers 3 and drives this in an adjustable transmission ratio.
  • the drive motor 6 for the main draft zone HV drives the pair of rollers 4 directly at the outlet, which is coupled to a pair of delivery rollers 7. There is therefore no mechanical coupling between the two fields of warpage, since both are driven by their own motor.
  • the two motors 5 for the roller pairs 2 and 3 are control motors and the motor 6 for the roller pair 4 is a main motor.
  • the latter regulates the exact production speed of the system via its speed, whereas the speed at which the fiber slivers enter the drafting system 1 is dependent on the speed of the control motors 5.
  • the delay is dependent on the speed of the control motors 5.
  • the speeds of the two control motors 5 can be controlled independently of one another; thus 7 different delays can be set on the two deliveries at the same delivery speed by the delivery rollers.
  • Corresponding servo amplifiers 8 are assigned to all motors, which have their own speed and current regulation.
  • all motors 5 and 6 are controlled by a common control unit RE, to which an input / display unit 9 is assigned.
  • the control unit RE contains a controller 10 for each of the two lines, which controls the speed of its control motor 5 via a fast control path and regulates it via a slow control path.
  • the control unit receives signals that are representative of the tape number management from measuring devices, not shown, of the type described in EP-B-0 252 952, and uses these signals to generate distortion correction values KB1 and KB2 for the tape number management, which are used in the control path. In addition to these distortion correction values KB1 and KB2, no further measured values are used in the control path, but only parameters that are partly entered via the input / display unit 9 and partly calculated in the control unit RE.
  • the controllers 10 are so-called I controllers for the regulating path (the output variable is proportional to the time integral of the input variable) and P controller for the control path (the output variable is proportional to the input variable at all times). They have the task of warping deviations, malfunctions in the drafting system, non-linearities of the actuators, temperature drift, to correct mechanical play and slip.
  • the current delay is calculated using the effective infeed speed VIi and the effective delivery speed VAi.
  • a comparison of the current and the desired warpage provides the warpage deviation, from which the controller 10 calculates a warpage correction value, which is then fed into the control path.
  • the calculation of a delay correction value is carried out within an abbat cycle; the speed at which a delay error is corrected in this control loop depends on the integration time of the I controller 10, on the sampling time and on the response time of the actuators (loaded motor 5 and servo amplifier 8).
  • the effective inlet speed VIi and the effective delivery speed VAi are measured by speed sensors 12 on the inlet roller pairs 2 and by a speed sensor 13 on the delivery roller pair 7, the signals of which are evaluated via a special interface.
  • the roller diameter, the nominal speed of the motors, the parameters of the speed sensors (eg speedometer wheel, correction factor) and the various controller parameters must be entered via the input / display unit 9.
  • the delivery speed VAs and the total delay ND can be changed via the input / display unit 9.
  • Fig. 2 shows the structure of a complete control system in a schematic longitudinal section through the drafting system.
  • a sliver F is pulled out from the supply cans 14, of which six or eight pieces are provided, for example, by means of a pair of rollers 15.
  • the fiber slivers F then run through a template measuring unit 16 for the sliver control, which according to the illustration is formed by a so-called groove and feeler roller measuring element 17 (see, for example, US Pat. No. 3,938,223) and, in addition to the actual measuring element 17, a displacement sensor 18 for has its evaluation.
  • the slivers F then enter the drafting unit 1 with the pairs of rollers 2, 3 and 4 and receive a constant pre-draft in the pre-draft field VV and a variable main draft in the main draft field HV.
  • the speed sensor 12 for measuring the effective inlet speed VIi (FIG. 1) is designed as a tachometer.
  • the time delay for the control controller is determined in the control unit RE as a function of the running-in speed VIi and from various distances (distance between measuring element / drafting system, roller distances).
  • a measuring element 19 for quality monitoring of the strip produced which is preferably formed by a so-called fiber press measuring funnel of the type described in EP-A-252 952.
  • a preamplifier 20 and on the other hand a cleaning unit 21 is assigned, from which compressed air 22 is fed to the measuring element 19 for cleaning and cooling.
  • the cleaning unit 21 contains a controlled 3-way valve 23 and a by-pass 24 for cooling. The cooling therefore takes place continuously and the cleaning sporadically, the 3-way valve 23 being controlled by the control unit RE.
  • the belt runs through the pair of delivery rollers 7, the speed sensor 13 of which is also designed as a tachometer. This measures the delivery speed of the produced strip, from which the production data are determined in the control unit RE.
  • the strip arrives in a storage can 25 arranged on a driven turntable, at the inlet of which a likewise driven head plate 26 is arranged.
  • control unit RE also has an interface 31 to a control cabinet 32 for the machine, which is used in particular for shutdown, alarm display, regulatory approval, can change control and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Control Of Multiple Motors (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Friction Gearing (AREA)
EP93903777A 1992-03-05 1993-02-26 Verfahren und vorrichtung zur regelung des verzugs eines streckwerks Revoked EP0587829B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH701/92A CH685164A5 (de) 1992-03-05 1992-03-05 Verfahren und Vorrichtung zur Regelung des Verzugs eines Streckwerks.
CH701/92 1992-03-05
PCT/CH1993/000049 WO1993018213A1 (de) 1992-03-05 1993-02-26 Verfahren und vorrichtung zur regelung des verzugs eines streckwerks

Publications (2)

Publication Number Publication Date
EP0587829A1 EP0587829A1 (de) 1994-03-23
EP0587829B1 true EP0587829B1 (de) 1997-09-17

Family

ID=4193159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93903777A Revoked EP0587829B1 (de) 1992-03-05 1993-02-26 Verfahren und vorrichtung zur regelung des verzugs eines streckwerks

Country Status (9)

Country Link
US (1) US5428870A (enrdf_load_stackoverflow)
EP (1) EP0587829B1 (enrdf_load_stackoverflow)
JP (1) JPH06507456A (enrdf_load_stackoverflow)
CN (1) CN1043792C (enrdf_load_stackoverflow)
CH (1) CH685164A5 (enrdf_load_stackoverflow)
DE (1) DE59307383D1 (enrdf_load_stackoverflow)
ES (1) ES2107654T3 (enrdf_load_stackoverflow)
TW (1) TW255920B (enrdf_load_stackoverflow)
WO (1) WO1993018213A1 (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1282707B1 (it) * 1995-03-28 1998-03-31 Rieter Ag Maschf Pettinatrice tessile a piu' teste
WO1997027351A1 (de) * 1996-01-24 1997-07-31 Zellweger Luwa Ag Vorrichtung zur überwachung von verarbeitungseinheiten für die vorbereitung von fasermaterial für die spinnerei
US5943740A (en) * 1996-04-02 1999-08-31 Rieter Machine Works, Ltd. Combing machine with an autoleveller drafting arrangement
US6581248B1 (en) * 1997-01-23 2003-06-24 Maschinenfabrik Rieter Ag Carding machine with drawing rollers at the outlet
US5774941A (en) * 1997-07-10 1998-07-07 China Textile Institute Two-head one-cubican drawing system
EP1009870B2 (de) * 1997-09-01 2008-09-17 Maschinenfabrik Rieter Ag Reguliertes streckwerk
US6058570A (en) * 1997-10-21 2000-05-09 Zellweger Luwa Ag Inflow sensor for a drawing equipment
IT1303019B1 (it) * 1998-04-17 2000-10-20 Flii Marzoli & C S P A Dispositivo perfezionato per lo stiro di un nastro tessile di carda
WO1999058749A1 (de) * 1998-05-13 1999-11-18 Maschinenfabrik Rieter Ag Textilmaterial verarbeitende maschine mit einem streckwerk
IT1302707B1 (it) * 1998-10-20 2000-09-29 Marzoli & C Spa Dispositivo e procedimento perfezionato per la raccolta e lo stiro delvelo nel gruppo di uscita di una carda.
RU2151831C1 (ru) * 1999-02-01 2000-06-27 Акционерное общество открытого типа "Ивчесмаш" Регулятор линейной плотности волокнистой ленты на текстильной машине
US6553826B1 (en) 1999-03-04 2003-04-29 Zellweger Luwa Ag Process and device for monitoring the quality of textile strips
WO2001093157A1 (en) * 2000-05-26 2001-12-06 Exitexchange Corporation Post-session internet advertising system
RU2213172C2 (ru) * 2001-06-29 2003-09-27 Пензенский технологический институт Способ автоматического управления вытягиванием волокнистого холстика в волокнистую ленту на многовыпускной ленточной машине
DE10161522A1 (de) * 2001-12-14 2003-06-18 Rieter Ag Maschf Spinnmaschine
GB0321826D0 (en) * 2003-09-18 2003-10-15 Graphic Internat Ltd Ab Improvements in and relating to rotary dies and rotary printing units
DE10352303A1 (de) * 2003-11-06 2005-06-09 Rieter Ingolstadt Spinnereimaschinenbau Ag Streckwerk für eine Spinnereimaschine
DE102004017025B4 (de) * 2004-04-02 2018-05-17 Maschinenfabrik Rieter Ag Spinnmaschine mit mehreren Steckwerksantrieben
DE102008038392A1 (de) * 2008-08-19 2010-02-25 TRüTZSCHLER GMBH & CO. KG Vorrichtung für eine oder an einer Spinnereivorbereitungsmaschine, die ein Streckwerk zum Verstrecken von strangförmigem Fasermaterial aufweist
DE102013113308A1 (de) * 2013-12-02 2015-06-03 Rieter Ingolstadt Gmbh Textilmaschine mit variablem Anspannverzug
IT201800009292A1 (it) * 2018-10-09 2020-04-09 Savio Macch Tessili Spa Apparato e metodo di stiro e filatura di filati misti per macchine di filatura ad aria con alimentazioni multiple
DE102022116504A1 (de) * 2022-07-01 2024-01-04 Maschinenfabrik Rieter Ag Regulierstrecke, Verfahren zum Betreiben einer Regulierstrecke sowie Verfahren zum Umrüsten einer Regulierstrecke

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL99739C (enrdf_load_stackoverflow) * 1958-01-09
US3088175A (en) * 1958-01-10 1963-05-07 Aoki Akira Automatic level control system for product sliver weight
US3938223A (en) * 1975-01-06 1976-02-17 Fiber Controls Corporation Auto leveler
DE2544029A1 (de) * 1975-10-02 1977-04-14 Schubert & Salzer Maschinen Verfahren und vorrichtung zum selbsttaetigen vergleichmaessigen von vliesen, faserbaendern, vorgarnen u.dgl. durch verziehen
DE2941612A1 (de) * 1979-10-13 1981-04-23 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Strecke
DE3162923D1 (en) * 1980-03-28 1984-05-10 Rieter Ag Maschf Method and device for regulating the unevenness of a sliver
CH668833A5 (de) * 1986-01-16 1989-01-31 Zellweger Uster Ag Vorrichtung zum messen und/oder vergleichmaessigen der banddicke von faserbaendern.
EP0354653B1 (en) * 1988-08-09 1996-04-10 John D. Hollingsworth On Wheels Inc. Drafting apparatus with autolevelling
US5022123A (en) * 1988-09-29 1991-06-11 Murata Kikai Kabushiki Kaisha Draft mechanism having roller pairs connected to draft ratio controlled motors by timing belts
DE3900409A1 (de) * 1989-01-09 1990-07-12 Rieter Ag Maschf Textilmaschine, insbesondere spinnmaschine
CH681897A5 (enrdf_load_stackoverflow) * 1989-07-31 1993-06-15 Rieter Ag Maschf
DE59010914D1 (de) * 1989-08-11 2000-11-16 Rieter Ag Maschf Streckwerk mit vermaschter Regelung
DE4103525A1 (de) * 1990-04-09 1991-10-10 Truetzschler & Co Vorrichtung zum verziehen von faserbaendern, z. b. aus baumwolle, chemiefaser u. dergl.

Also Published As

Publication number Publication date
CH685164A5 (de) 1995-04-13
JPH06507456A (ja) 1994-08-25
TW255920B (enrdf_load_stackoverflow) 1995-09-01
WO1993018213A1 (de) 1993-09-16
ES2107654T3 (es) 1997-12-01
EP0587829A1 (de) 1994-03-23
CN1077234A (zh) 1993-10-13
CN1043792C (zh) 1999-06-23
US5428870A (en) 1995-07-04
DE59307383D1 (de) 1997-10-23

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