EP0617149B1 - Procédé pour égaliser de rubans de fibres textiles - Google Patents

Procédé pour égaliser de rubans de fibres textiles Download PDF

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Publication number
EP0617149B1
EP0617149B1 EP94101828A EP94101828A EP0617149B1 EP 0617149 B1 EP0617149 B1 EP 0617149B1 EP 94101828 A EP94101828 A EP 94101828A EP 94101828 A EP94101828 A EP 94101828A EP 0617149 B1 EP0617149 B1 EP 0617149B1
Authority
EP
European Patent Office
Prior art keywords
values
measured
sliver
processor
reaction point
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
EP94101828A
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German (de)
English (en)
Other versions
EP0617149A1 (fr
Inventor
Horst KÖPPLER
Ramona Dipl.-Ing. Bönisch
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.)
CSM Saechsische Spinnereimaschinen GmbH
Original Assignee
CSM Saechsische Spinnereimaschinen GmbH
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 CSM Saechsische Spinnereimaschinen GmbH filed Critical CSM Saechsische Spinnereimaschinen GmbH
Publication of EP0617149A1 publication Critical patent/EP0617149A1/fr
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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
    • D01H5/38—Regulating or varying draft in response to irregularities in material ; Measuring irregularities

Definitions

  • the invention relates to a method for homogenizing textile fiber tapes in a draw frame with tape feed rollers and tape discharge rollers according to the preamble of claim 1.
  • DE 23 31 217 A1 discloses a device for uniformizing the thickness of fiber slivers, in which the fluctuations in mass of the fiber slivers are detected cyclically by a measuring device.
  • the cyclically determined measured values are entered one after the other into storage locations in an electrical store (capacitor store) and, after a predetermined runtime, are fed out of phase as additional control variables to one of the drives in the region of the delay line.
  • the cycle or cycle time can be changed depending on the material speed.
  • the saved values are output in the same rhythm as the measured values are recorded and saved.
  • the basic size of the cycle time can be set using a mechanical gear.
  • the manipulated value determined by a measured value can be realized when the measured section of the sliver is in the adjustable warping field.
  • the capacitor stores used here were unsatisfactory.
  • the device operates in a similar manner according to DE-Gbm 75 31 226.
  • the measured values are stored in a shift register in the cycle of their measurements and are pushed through the memory in the same cycle sequence.
  • the control values are output at the same frequency as the clock values.
  • the cycle sequence can be changed by an actuating gear, which varies the cycle time on the basis of the speed of the delay elements.
  • the sliding register can be provided with several outputs.
  • a mechanical switching element activates the output that offers the best conditions for the respective fiber material.
  • control signals are changed in direct dependence on the clock signal of the transmitter.
  • German patent 36 22 584 C2 describes a method and a device for regulating the warping of a sliver on a textile machine.
  • measured values from an encoder at the input of the drafting system and measured values at the output of the drafting system are alternately fed to a controller, temporarily stored and processed together to form a setpoint.
  • the setpoint thus formed is read into a shift register in time with the detection and is fed to the motor to be controlled with a time delay in the same cycle.
  • actuating means are proposed which are suitable for shifting the reaction point within the warpage zone or for changing the translation of the manipulated values.
  • Commonly used adjusting means are used for this purpose.
  • the stated object is achieved in a surprisingly simple manner by the method according to claim 1.
  • Another, but decisive, relief is the determination of average values from several measured values and the use of the average values to prepare a speed control value for the motor to be controlled.
  • the storage of the measured value in a preferably electronic memory that can be managed by a processor also enables an average value or speed setpoint to be called up at any time to an optimized reaction point.
  • the effort for the necessary device can be kept at a low level.
  • the use of the microcomputer that can be used for this is simple.
  • the reaction point and the reaction area can be designed freely by entering appropriate parameters with the help of keyboards.
  • the modification of the method according to claim 3 ensures that the measured values evaluated on the sliver to determine the average values also have a mutual relationship.
  • the average values obtained in this way represent the actual strip thickness with sufficient accuracy.
  • the determined and stored average values then become effective as manipulated values in the area of the sliver in which the initial values for determining the average value were measured.
  • the position of the reaction point and thus the distance to be covered from the measuring point to the reaction point is automatically determined by the processor for various slivers according to the average fiber length entered at the terminal.
  • a length of freely selectable test sliver is run at the beginning of the processing of a new sliver type, from which the average sliver mass obtained at the outlet is determined externally and entered into the processor via the terminal, which then automatically sets the basic delay corrected that the required storage tape mass is observed.
  • a drive motor M1 which drives a pair of rotating measuring rolls 1, a measuring device 4 and the feed area 2, is located on one line, as shown in FIG. 1.
  • Another motor M 2 drives the drafting rollers 3 after the draft zone.
  • An encoder 4 preferably an absolute encoder, is arranged on the pair of measuring rollers 1 for recording the measured value of the actual value of the input band wet IW / EM.
  • the measured actual value IW / EM is entered into the memory S and coupled with the value of the absolute position SW / R of the reaction point R, which results from the distance lR to be covered.
  • the actual value acquisition IW / EM can take place at any intervals x.
  • the processor P constantly checks the reaction points SW / R assigned to the actual values IW / EM by comparing them with the actual value IW / R to determine whether a pair of values IW / EM // SW / R has reached the reaction point R.
  • the setpoint value SW / D is output to the motor M 1 via the frequency controller fN and the value SW / AT to the output terminal AT .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (3)

  1. Procédé destiné à régulariser des bandes de fibres textiles dans un intercadre avec cylindres d'alimentation en bandes et cylindres de transport de bandes, durant lequel
    - la masse de la bande de fibres non étirée est mesurée,
    - les valeurs de mesure saisies par intervalles sont successivement enregistrées,
    - un délai de temporisation entre le processus de mesure et l'amorce du processus de correction est défini et
    - les valeurs de mesures enregistrées sont transmises au processus de correction du moteur (M1) des cylindres d'alimentation (2) en tant que valeurs prescrites pour la vitesse de rotation,
    caractérisé par le fait
    que des valeurs de mesure absolues (IW/EM) sont saisies pour la masse de la bande de fibres dans des étapes (X) pouvant être définies librement,
    que les valeurs de mesure (IW/EM) sont enregistrées dans une mémoire (S) pouvant être gérée par un processeur (P),
    que les valeurs de mesure (IW/EM) enregistrées par groupe au moyen d'un processeur (P) peuvent servir au calcul d'une valeur moyenne,
    que les valeurs moyennes (IW/EM) peuvent être enregistrées sous une forme pouvant être appelée par un processeur (P) en même temps que des données (SW/R) d'un point de réaction défini en fonction de sa position et
    que les valeurs moyennes (IW/EM) relevées au niveau du point de réaction (R) peuvent être appelées au moyen du processeur (P), indépendamment du temps, après que le moteur ait parcouru un trajet prédéfini, et transmises sous forme des valeurs prescrites de vitesse de rotation (SW/D) au moteur (M1).
  2. Procédé conforme à la revendication 1, caractérisé par le fait
    que les valeurs moyennes (IW/EM) sont respectivement rassemblées avec des données (SW/R) du point de réaction (R) en une paire de valeurs (IW/EM/SW/R) et
    que la paire de valeurs (IW/EM/SW/R) relevées en fonction des données (SW/R) du point de réaction (R), peut être appelée au moyen du processeur (P) et transmise en tant que valeurs de vitesse de rotation (SW/D) au moteur (M1).
  3. Procédé conforme aux revendications 1 et 2, caractérisé par le fait
    que la valeur moyenne obtenue à partir des valeurs de mesure (IW/EM) enregistrées successivement est dérivée d'une plage de mesure et
    que la paire de valeurs (IW/EM/SW/R) contenue dans cette valeur moyenne est alors appelée, lorsque le début de cette section de mesure atteint le point réaction (R).
EP94101828A 1993-02-25 1994-02-07 Procédé pour égaliser de rubans de fibres textiles Expired - Lifetime EP0617149B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4306343 1993-02-25
DE4306343A DE4306343C1 (de) 1993-02-25 1993-02-25 Verfahren zur Vergleichmäßigung von textilen Faserbändern

Publications (2)

Publication Number Publication Date
EP0617149A1 EP0617149A1 (fr) 1994-09-28
EP0617149B1 true EP0617149B1 (fr) 1997-08-27

Family

ID=6481647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94101828A Expired - Lifetime EP0617149B1 (fr) 1993-02-25 1994-02-07 Procédé pour égaliser de rubans de fibres textiles

Country Status (2)

Country Link
EP (1) EP0617149B1 (fr)
DE (2) DE4306343C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6266573B1 (en) 1998-02-21 2001-07-24 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and device for the control of draft in a drafting system for textile fiber material

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424091A1 (de) * 1994-07-12 1996-01-18 Kaendler Maschinenbau Gmbh Verfahren zum Regulieren eines Streckwerkes, insbesondere an Karden und Reguliervorrichtung
DE19538496A1 (de) * 1995-08-08 1997-02-13 Rieter Ingolstadt Spinnerei Lineare Messung der Faserbanddicke oder -masse
DE19615947B4 (de) * 1996-04-22 2007-10-31 Rieter Ingolstadt Spinnereimaschinenbau Ag Minimalwert-suchende Regulierungsoptimierung
US6581248B1 (en) 1997-01-23 2003-06-24 Maschinenfabrik Rieter Ag Carding machine with drawing rollers at the outlet
US6286188B1 (en) 1997-09-01 2001-09-11 Maschinenfabrik Rieter Ag Regulated drawing frame

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3472805D1 (en) * 1983-09-05 1988-08-25 Chubu Seiko Kk Device for automatically controlling the draft in a spinning machine
DE3569760D1 (en) * 1985-02-15 1989-06-01 Rieter Ag Maschf Apparatus for the continuous mass control of a fibre ribbon
DE3619248A1 (de) * 1986-06-07 1987-12-10 Zinser Textilmaschinen Gmbh Verfahren zur steuerung des verzugs eines faserbandes bei einer textilmaschine
IT1227771B (it) * 1986-07-04 1991-05-06 Zinser Textilmaschinen Gmbh Procedimento e dispositivo per regolare lo stiro di un nastro di fibre in una macchina tessile.
DE59107714D1 (de) * 1990-09-26 1996-05-30 Rieter Ag Maschf Verfahren zur Korrektur eines ermittelten Messsignals zur Masse eines Faserbandes an einem Regulierstreckwerk für Faserbänder mit einem Auslaufmessorgan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6266573B1 (en) 1998-02-21 2001-07-24 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and device for the control of draft in a drafting system for textile fiber material

Also Published As

Publication number Publication date
DE59403822D1 (de) 1997-10-02
EP0617149A1 (fr) 1994-09-28
DE4306343C1 (de) 1994-07-14

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