WO2010028642A1 - Procédé de régulation sans contact de l'épaisseur d'une couche de préparation appliquée sur un fil, et montage pour mettre en oeuvre le procédé - Google Patents

Procédé de régulation sans contact de l'épaisseur d'une couche de préparation appliquée sur un fil, et montage pour mettre en oeuvre le procédé Download PDF

Info

Publication number
WO2010028642A1
WO2010028642A1 PCT/DE2009/001302 DE2009001302W WO2010028642A1 WO 2010028642 A1 WO2010028642 A1 WO 2010028642A1 DE 2009001302 W DE2009001302 W DE 2009001302W WO 2010028642 A1 WO2010028642 A1 WO 2010028642A1
Authority
WO
WIPO (PCT)
Prior art keywords
yarn
circuit arrangement
electrode
signal
reference electrode
Prior art date
Application number
PCT/DE2009/001302
Other languages
German (de)
English (en)
Inventor
Wolfgang Schäfer
Frank Jenke
Jan Posvic
Original Assignee
Neumann Elektronik 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 Neumann Elektronik Gmbh filed Critical Neumann Elektronik Gmbh
Priority to EP09748215A priority Critical patent/EP2331906A1/fr
Publication of WO2010028642A1 publication Critical patent/WO2010028642A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36—Textiles
    • G01N33/365—Filiform textiles, e.g. yarns

Definitions

  • the invention relates to a method for non-contact control of the thickness of a spin finish applied to a yarn and a circuit arrangement for carrying out the method.
  • yarns are needed, which consist of filament yarns with infinitely long fibers that hold together undiluted. Depending on the application, these yarns consist of a different number of filaments, up to yarns of only one filament, the monofilaments.
  • preparation liquid chemical substances
  • Preparations consist of various chemical components, such as lubricants, emulsifiers, antistatic agents, etc. The application is carried out with the aid of preparation fingers or rollers. If the coating quality achieved is insufficient, disruptions of the further processing process, in particular due to thread breaks, for example because of insufficient sliding properties, are the result.
  • the state of the art is to perform a random check of the preparation order outside the technological process in the laboratory as part of quality assurance. Any defects usually affect the entire production batch. Intensity and uniformity of the preparation application are only inadequately determined, the result being only statements on the applied amount on the relevant thread section.
  • the disadvantage of conventional quality control is that it only takes place when the production process is complete and the product is no longer to be changed. In order to reduce the reject rate, an over-preparation could be made. But this is costly and uneconomical and does not avoid production process disturbances.
  • the method is only able to detect long-wave components from the charge progression of the yarn which permit only a low-frequency signal with a narrow-band spectrum.
  • the course of the preparation layer thickness along the thread can only be reflected with a low spatial resolution.
  • the object of the invention is to develop a method for the contactless control of the thickness of a preparation layer applied to a yarn and a circuit arrangement for carrying out the method, which both monitors and optionally controls the preparation application online and continuously in the production process of filament yarn spinning at each spinneret. as well as retrofitting existing textile machines allowed.
  • the advantage of the method according to the invention is that it allows a cost-effective continuous detection of the quality of the applied preparation during the production process and can be installed by its compactness even in difficult and tight machine positions.
  • Fig. 1 shows a circuit arrangement for carrying out the method
  • the electrostatic field effect emanating from the yarn is detected directly, without detours by field compensation, via the effect of influence caused by the field effect, as a shift of charges in an electrode subsequently generates an electrical voltage proportional to the charge in accordance with the influence effect.
  • This electrical voltage is evaluated according to their height and their course. The evaluation can be carried out in such a way that, when it exceeds or falls short of a stored Default value an error signal is generated, but it is also possible to use the voltage generated to control the preparation layer thickness.
  • FIG. 1 shows a circuit arrangement for evaluating the irregularly distributed charge accumulations, which are located on a material to be measured, for example a yarn or a thread. during the production process of yarn production or through friction points in the yarn production process.
  • An electrode arrangement 1 for example a latticed electrode arrangement according to FIG. 2 consisting of two intermeshing combs, is connected with its terminals to a charge amplifier, namely the first terminal 16 to a first charge amplifier 2 and the second terminal 17 to a second charge amplifier 3.
  • the outputs of the first charge amplifier 2 and of the second charge amplifier 3 are connected to the input of a differential amplifier 4.
  • the output of the differential amplifier 4 is connected via a converter 5 both to an AD converter 6 and to an analog signal tap 7.
  • the AD converter 6 is connected via a microcontroller 8 both to a serial interface 9 and to an operating and display unit 10.
  • the converter 5 can be, for example, an RMS converter, another averaging device, optionally with an adjustable averaging time, a peak rectifier with adjustable discharge time or a low-pass filter with adjustable cutoff frequency.
  • the converter 5 into the microcontroller 8 and replace it there by a digital filter, but in particular also by a non-linear calculation rule, such as, for example, the line integral known from mathematics.
  • a non-linear calculation rule such as, for example, the line integral known from mathematics.
  • the RMS converter From the AC voltage signal of the differential amplifier 4, the RMS converter generates a DC voltage signal whose residual ripple and thus the local resolution of the signal on the measurement item are determined inter alia by the averaging time of the RMS converter.
  • the construction of a control loop is possible, which online and autonomously change the order quantity of the preparation and thus contributes to quality assurance.
  • the analog Output signal of the converter 5 digitized by means of the AD converter 6 and supplied to the microcontroller 8.
  • the display of the measured value in the operating and display unit 10 and the output via the serial interface 9 are controlled by this microcontroller 8. This allows logging by reading directly or by a PC.
  • This digital data can also be used as the analog output signal of the converter 5 to build a control loop.
  • the microcontroller 8 also allows the parameterization of the system parameters, for example the averaging time, by the operator.
  • an electrode arrangement 1 comprising a combination of at least one signal electrode 11 interrupted in the yarn movement direction and at least one reference electrode 12 also interrupted in the yarn movement direction.
  • Both electrodes 11 and 12 have grid webs of different widths and spaces of different widths.
  • the signal electrode 11 for example, the different widths webs 14a and 14b and the reference electrode 12, the different widths interruptions 15a and 15b.
  • the longitudinal direction of both the signal electrode 11 and the reference electrode 12 is aligned parallel to the yarn 13.
  • the reference electrode 12 is disposed between the yarn 13 and the signal electrode 11 such that the lands 14a and 14b of the signal electrode 11 are associated with the interruption area 15a and 15b of the reference electrode 12.
  • the signal electrode 11 has at least two webs 14a and 14b and the reference electrode at least two interruptions 15a and 15b.
  • the yarn 13 is moved past the electrode assembly 1 and thus, due to the above-described shape and geometry of the grating, induces signals having a broadband spectrum according to the invention, which reflects the course of the preparation layer thickness along the yarn with high local resolution.
  • the reference electrode 12 When the reference electrode 12 is disposed between the yarn 13 and the signal electrode 11 and in such a manner that the lands 14a and 14b of the signal electrode 11 are associated with the junction area 15a and 15b of the reference electrode 12, the reference electrode 12 can serve also to the target a high SNR to shield interference fields with respect to the signal electrode 11.
  • the reference electrode 12 is connected via its terminal 16 not only to the input of the charge amplifier 2, but, as shown in Figure 2, additionally connected to ground potential.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Food Science & Technology (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention a pour objet un procédé de régulation sans contact de l'épaisseur d'une couche de préparation appliquée sur un fil et un montage pour mettre en oeuvre le procédé, permettant à la fois de surveiller et éventuellement de commander l'application de préparation en direct et en continu pendant le processus de production de filage de fil continu au niveau de chaque filière, et de rééquiper des machines textiles pré-existantes. A cet effet, l'effet du champ est déterminé directement, sans détour lié à sa compensation, par l'intermédiaire de son influence électrostatique, une tension électrique proportionnelle à l'influence électrostatique est produite en fonction de ladite influence, et cette tension électrique est évaluée quant à son intensité et ses variations. L'invention concerne également un procédé de régulation sans contact de l'épaisseur d'une couche de préparation appliquée sur un fil et un montage pour mettre en oeuvre le procédé.
PCT/DE2009/001302 2008-09-15 2009-09-14 Procédé de régulation sans contact de l'épaisseur d'une couche de préparation appliquée sur un fil, et montage pour mettre en oeuvre le procédé WO2010028642A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09748215A EP2331906A1 (fr) 2008-09-15 2009-09-14 Procédé de régulation sans contact de l'épaisseur d'une couche de préparation appliquée sur un fil, et montage pour mettre en oeuvre le procédé

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008047336.7 2008-09-15
DE200810047336 DE102008047336B4 (de) 2008-09-15 2008-09-15 Verfahren zur berührungslosen Kontrolle der Dicke einer auf ein Garn aufgebrachten Präparationsschicht und Schaltungsanordnung zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
WO2010028642A1 true WO2010028642A1 (fr) 2010-03-18

Family

ID=41649718

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2009/001302 WO2010028642A1 (fr) 2008-09-15 2009-09-14 Procédé de régulation sans contact de l'épaisseur d'une couche de préparation appliquée sur un fil, et montage pour mettre en oeuvre le procédé

Country Status (3)

Country Link
EP (1) EP2331906A1 (fr)
DE (1) DE102008047336B4 (fr)
WO (1) WO2010028642A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2394944A1 (fr) * 2010-06-10 2011-12-14 Sentex Chemnitz GmbH Dispositif de capteur de poussière pour fils et peluches
WO2020115649A1 (fr) * 2018-12-03 2020-06-11 Gilbos Nv Procédé et capteur de mesure de rotation d'un d'objet allongé

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH479478A (de) 1968-06-17 1969-10-15 Loepfe Ag Geb Verfahren und Vorrichtung zur Überwachung der Bewegung eines Textilfadens
US3927356A (en) 1973-07-13 1975-12-16 Nat Res Dev Yarn detection devices
DE9216181U1 (fr) 1992-11-27 1993-02-18 Otto Stueber Gmbh & Co Kg, 7311 Bissingen, De
DE4408312A1 (de) 1994-03-11 1995-09-14 Frei Gmbh & Co Geb Berührungsloser, elektrostatischer Aufnehmer für sich bewegende, längliche und elektrisch nichtleitende Objekte
DE19535177A1 (de) 1995-09-22 1997-03-27 Temco Textilmaschkomponent Verfahren und Vorrichtung zum Prüfen der Struktur, insbesondere Topografie, von Garnen insbesondere in einer Textilmaschine
WO2006133584A1 (fr) 2005-06-15 2006-12-21 Uster Technologies Ag Procede et dispositif pour detecter des matieres etrangeres dans un echantillon de controle allonge, solide et en deplacement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH479478A (de) 1968-06-17 1969-10-15 Loepfe Ag Geb Verfahren und Vorrichtung zur Überwachung der Bewegung eines Textilfadens
US3927356A (en) 1973-07-13 1975-12-16 Nat Res Dev Yarn detection devices
DE9216181U1 (fr) 1992-11-27 1993-02-18 Otto Stueber Gmbh & Co Kg, 7311 Bissingen, De
DE4408312A1 (de) 1994-03-11 1995-09-14 Frei Gmbh & Co Geb Berührungsloser, elektrostatischer Aufnehmer für sich bewegende, längliche und elektrisch nichtleitende Objekte
DE19535177A1 (de) 1995-09-22 1997-03-27 Temco Textilmaschkomponent Verfahren und Vorrichtung zum Prüfen der Struktur, insbesondere Topografie, von Garnen insbesondere in einer Textilmaschine
WO2006133584A1 (fr) 2005-06-15 2006-12-21 Uster Technologies Ag Procede et dispositif pour detecter des matieres etrangeres dans un echantillon de controle allonge, solide et en deplacement

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
H. FISCHER: "Geeignete Methoden zur Extraktion der Avivage von Polyesterfasem", MELLIAND TEXTILBERICHTE, April 2010 (2010-04-01), pages 151 F
W. VOSTEEN, E. WILLIAM: "A Review of current electrostatic Measurement Techniques and their Limitations", ELECTRICAL OVERSTRESS EXPOSITION, pages 24,26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2394944A1 (fr) * 2010-06-10 2011-12-14 Sentex Chemnitz GmbH Dispositif de capteur de poussière pour fils et peluches
WO2020115649A1 (fr) * 2018-12-03 2020-06-11 Gilbos Nv Procédé et capteur de mesure de rotation d'un d'objet allongé
BE1026822B1 (nl) * 2018-12-03 2020-07-02 Gilbos Nv Methode en sensor voor rotatiemeting

Also Published As

Publication number Publication date
EP2331906A1 (fr) 2011-06-15
DE102008047336B4 (de) 2010-05-12
DE102008047336A1 (de) 2010-03-25

Similar Documents

Publication Publication Date Title
DE2409882B2 (de) Vorrichtung zum erkennen des fehlerhaften arbeitens von spinnmaschinen
EP2331441B1 (fr) Surveillance de la qualité d'épissures dans un article textile allongé à contrôler
CH659494A5 (de) Verfahren und vorrichtung zur analyse von garnunregelmaessigkeiten.
DE2649779A1 (de) Verfahren zum feststellen des periodischen charakters der in einem zwischen einer garnbildungs- und einer garnaufwindestufe einer garnerzeugungsmaschine befindlichen garn enthaltenen garnunregelmaessigkeiten und vorrichtung zur durchfuehrung des verfahrens
WO2007115416A1 (fr) Procédé et dispositif d'analyse de produit à vérifier allongé, solide et mobile
DE102005040978A1 (de) Verfahren zur Überwachung des Betriebszustandes rotierender Walzen in einer industriellen Anlage
EP0539900B1 (fr) Procédé pour déterminer des fautes d'isolation et testeur d'étincelles pour executer ce procédé
EP0439768B1 (fr) Méthode pour la classification qualitative des fils nettoyés électroniquement
EP3210088A1 (fr) Procédé et système d'assistance pour la détection d'une défaillance dans une installation
EP0685580A1 (fr) Procédé et dispositif pour déterminer les causes de défauts des fils, mèches et rubans de fibres
EP2303743A1 (fr) Procédé et dispositif de nettoyage de fil
DE102008047336B4 (de) Verfahren zur berührungslosen Kontrolle der Dicke einer auf ein Garn aufgebrachten Präparationsschicht und Schaltungsanordnung zur Durchführung des Verfahrens
WO2007140639A1 (fr) Procédé et dispositif de détection d'une âme dans un fil à âme
EP0570836B1 (fr) Procédé et dispositif pour l'identification en direct de bancs d'étirage mal ajustés ou défectueux de métiers à filer à anneaux
WO2013143873A1 (fr) Procédé de surveillance de fil
DE19649329B4 (de) Verfahren zum Überprüfen des Fadenprofils an einem laufenden Faden beim Anspinnen in einer Offenend-Spinnmaschine
WO2011134091A1 (fr) Contrôle de variations régulières de la valeur théorique d'un paramètre dans une matière d'essai textile allongée
DE3133428A1 (de) Verfahren zum abtasten und auswerten von fehlern in textilien, insbesondere in maschenwaren, und vorrichtung zum durchfuehren dieses verfahrens
EP3713030B1 (fr) Localiser une fuite à la terre dans un réseau à courant continue avec plusieurs zones de charge
DE2428898A1 (de) Ueberwachungsvorrichtung fuer fehlerhafte nadeln an laufenden wirk- und strickmaschinen
DE102018117687A1 (de) Vorrichtung und Verfahren zum optischen Überwachen der Anordnung wenigstens eines Zugmittels sowie Verwendung
DE10223753A1 (de) Rundstrickmaschine mit einer Schnittstelle zur Datenübertragung an eine Haupteinheit sowie Verfahren zum Betreiben einer derartigen Rundstrickmaschine
EP2291615A2 (fr) Capteur inductif
WO2014107817A1 (fr) Détermination des causes de défauts dans un processus de production d'une structure textile allongée
EP4245900A2 (fr) Dispositif de fabrication d'un fil à partir d'un filé

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09748215

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009748215

Country of ref document: EP