EP1596002B1 - Machine à papier - Google Patents

Machine à papier Download PDF

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Publication number
EP1596002B1
EP1596002B1 EP05101128A EP05101128A EP1596002B1 EP 1596002 B1 EP1596002 B1 EP 1596002B1 EP 05101128 A EP05101128 A EP 05101128A EP 05101128 A EP05101128 A EP 05101128A EP 1596002 B1 EP1596002 B1 EP 1596002B1
Authority
EP
European Patent Office
Prior art keywords
fibrous web
machine
web
measuring
machine according
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
EP05101128A
Other languages
German (de)
English (en)
Other versions
EP1596002A1 (fr
Inventor
Rudolf Münch
Egon Bild
Siegfried Daum
Joerg Maurer
Tobias Wanke
Werner Reichert
Wolfgang Klotzbuecher
Josef Wigand
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1596002A1 publication Critical patent/EP1596002A1/fr
Application granted granted Critical
Publication of EP1596002B1 publication Critical patent/EP1596002B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper

Definitions

  • the invention relates to a machine for producing a paper, board, tissue or other fibrous web from a pulp suspension or for refining or further processing the fibrous web, wherein in the machine at least one arrangement for applying at least two longitudinally spaced apart markings mounted on the fibrous web and in the web running direction of the fibrous web of the arrangement downstream, in particular non-contact, measuring device for measuring the distance of the markings.
  • Such a machine is for example from the US patent US Pat. No. 6,209,817 known.
  • this object is achieved in that at least one further measuring device for measuring the length of a section of the fibrous web is present in the machine, and that a comparison means for comparing the measured values measured by the measuring device and by the further measuring device, in particular a control computer, is present ,
  • This can be a mark applied by the arrangement on the fibrous web nacheichen to achieve a correlation of the mark with other length measuring devices by the non-contact measurement, the measurement of web length via encoders, triggers, etc. to rollers and the measurement of the drive signals In this way, data obtained at various points in the production process of the fibrous web can be compared with the original marking information.
  • the distance between the, for example, consecutive markings measured with the measuring device is then compared with the known distance when setting the markings, whereby the elongation of the fibrous web is determined.
  • further measurements such as, for example, the speed of the fibrous web, the web tension at certain points or the like, can be taken into account in the comparison.
  • the mark is not limited to strokes, but that the mark may include a code that includes other information such as absolute values of the length of the fibrous web at the mark, the type of paper, and so forth.
  • the code can in this case be designed, for example, as a number code or as a bar code.
  • the measuring system can be integrated at different points in a machine and used for different process steps, so that the stretching of the material web in the process chain which passes through them is also subordinated offline in the machine for producing the fibrous web
  • the wrapped tensile stress can be determined.
  • the measured strains and the "stress" caused by them for the pulp, in particular the paper it is then possible to make a statement as to what residual extensibility the pulp material still has until it is torn off. This dependence can be established in a stress-strain diagram.
  • statements can be made about the elastic modulus of the pulp. These measurements can be verified with a soft-sensor to measure strength properties in correlation with other data obtained in a laboratory.
  • a soft sensor is a software-based sensor in which raw measurement data in the form of quality or process data during the manufacturing or refining process are available, in the raw measurement data also measurements of quality parameters in the laboratory can be included, and wherein the raw measurement data can be combined into data sets that have been determined simultaneously, with specific laboratory or quality measurements being selectable as target data that can be calculated from at least one other data serving as input data by means of at least one soft-sensor algorithm running in a computer-based operation and linking unit and each dataset contains measurement data which relate approximately to the same control volume of web or raw material, in particular paper or paper raw material.
  • the invention allows the origin of WicketShin when winding the fibrous web to analyze a winding roll. Likewise can be determined by means of strain measurements in conjunction with length measurements a yardstick for the find "true length" of wound in a winding roll web, including marks on the fibrous web, especially at the outer edge, can be used.
  • the arrangement is arranged in a Siebformer or in a press section of the machine for producing the fibrous web.
  • strains of the fibrous web could be determined by the method according to the invention in the forming section or the press section.
  • a further measuring means are in particular a means for non-contact measurement, a rotary encoder, a trigger device, a mounted on a roller measuring device, in particular an encoder, or means for measuring a drive signal.
  • an evaluation unit for evaluating the measured values obtained by the comparison means in particular the control computer, about the strain during the production of the fibrous web and for the storage or archiving of the data obtained.
  • the evaluation unit is connected to a further control computer, which is arranged in an additional, in particular also working offline to the machine processing unit.
  • tensile and elongation of the fibrous web are detected independently of each other, so that the elongation can be traced over a wide process course.
  • a machine for producing or treating a fibrous web 1 ( Fig. 1 ) comprises an array of cylinders 2 to 8, over which or between which the fibrous web 1 is passed. Between the cylinder 2 and the cylinder pair 3, 4, an arrangement 9 for applying web edge markings on the fibrous web 1 is present. Between the cylinder pair 3, 4 and a cylinder group consisting of the cylinders 5 to 8, a device 10 for non-contact speed measurement of the fibrous web 1 is arranged.
  • a roller 11 On a roller 11 is an aggregate 12 for measuring the on the fibrous web. 1 exercised train attached. At a further roller 13, a rotary encoder 14 is installed.
  • the arrangement 9 and the measuring devices 10, 12 and 14 pass on their data to a control computer 15, which evaluates them.
  • a process unit 16 arranged offline from the machine is also equipped with measuring units 17, 18, 19 for determining the distance of the markings on the fibrous web 1 and / or for calculating the rotational speed of rollers or cylinders, which forward their data to a control computer 20.
  • This is like the control computer 15 connected to an evaluation unit 21, in which the elongation of the fibrous web 1 is traced and archived in different process steps and at different points in the process of their preparation.
  • a pulp suspension In a likewise equipped with means for strain measurement paper machine ( Fig. 2 ) is fed from a headbox 22, a pulp suspension a gap between two wires 23 and 24 of a Doppelsiebformers 25. On the radius of a forming roller 26, the wires 23, 24 run towards each other in a wedge shape and enclose the pulp suspension between them. In this case, there is a first dewatering of the pulp suspension, and it forms a fiber mat from which a paper web 27 is formed.
  • the twin-wire former 25 there is an arrangement 28 for applying markings to the paper web 27, in particular on its web edge.
  • the twin-wire former 25 is followed by a press section 29.
  • the press section 29 comprises, for example, three press stations 30, 31, 32 as shown.
  • the first two press stations 30, 31 form a tandem Nipco-Flex press section, in each of which a roller 33, 34 interacts with a shoe press roller 35, 36.
  • a first measuring device is provided for measuring the distance between the markings applied to the paper web 27 by the arrangement 28.
  • drying section 40 To the press section 29 is followed by a guide rollers 38 and drying cylinder 39 having drying section 40, in which also the elongation of the paper web 27 by means of a measuring device 41 is determined.
  • the paper web 27 is passed between a shoe roll 42 and a roller 43 of a shoe calender 44 used as a calendering. About guide rollers, the paper web 27 enters a two film rollers 45, 46 having film press.
  • an application nozzle 47 or 48 brings a film of a coating color in excess, which is doctored off in each case by a metering rod 49, 50.
  • a measuring device 51 may be present.
  • the paper web 27 is passed through a working with air deflection element 52 to a floating dryer 53 through which the paper web 27 is dried on both sides by means of heat radiation or hot air and behind which preferably also a measuring device 54 for measuring the elongation of the paper web 27 is installed.
  • the now re-dried paper web 27 is continued to a nozzle moistener 57, by which it is rewetted back to a predetermined moisture level and humidity gradient.
  • the web 27 is smoothed in a calender 58.
  • the calender 58 leaving the paper web 27 is then wound in a winding machine 59 to a paper roll.
  • the winding machine 59 for winding the paper web 27 may also be arranged offline from the machine for producing the paper web 27 from the pulp suspension.
  • measuring devices 60 and 61 are arranged for strain measurement.
  • encoders for measuring the peripheral speed of the associated rollers or cylinders can be installed in order to determine the correlation between the peripheral speed and the elongation and the slippage of the paper web 27. All data measured by the rotary encoders, the measuring devices 41, 51, 60, 61 as well as by other devices for measuring the speeds of the paper web 27 and of the rollers or cylinders are transmitted to a control computer (cf. Fig. 1 ).

Landscapes

  • Paper (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Claims (6)

  1. Machine pour la fabrication d'une bande de papier, de carton, d'essuie-tout ou d'une autre matière fibreuse à partir d'une suspension de matière fibreuse ou pour le façonnage ou le traitement de la bande de matière fibreuse (1, 27), dans laquelle au moins un dispositif (9, 28) pour appliquer sur la bande de matière fibreuse (1, 27) au moins deux marquages distants l'un de l'autre en direction longitudinale et un dispositif de mesure (10; 41, 51, 54, 60, 61), en particulier sans contact, disposé après le dispositif (9, 28) dans le sens de défilement de la bande de matière fibreuse (1, 27), pour mesurer la distance des marquages, sont installés sur la machine, caractérisée en ce qu'il est prévu dans la machine au moins un autre moyen de mesure (12, 14, 17, 18, 19) pour mesurer la longueur d'un segment de la bande de matière fibreuse et en ce qu'il est prévu un moyen de comparaison pour comparer les valeurs de mesure mesurées par le dispositif de mesure (10; 41, 51, 54, 60, 61) et par l'autre moyen de mesure (12, 14, 17, 18, 19), en particulier un ordinateur de commande (15, 20).
  2. Machine selon la revendication 1, caractérisée en ce que le dispositif (28) est disposé dans une section de formage à toile (25) ou dans une section de presse (29) de la machine pour la fabrication de la bande de matière fibreuse (27).
  3. Machine selon la revendication 1 ou 2, caractérisée en ce que l'autre moyen de mesure est un moyen de mesure sans contact, un capteur de rotation (14), un dispositif à déclenchement, un dispositif de mesure monté sur un rouleau, en particulier un encodeur, ou un dispositif pour mesurer un signal d'entraînement.
  4. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend une unité d'exploitation (21) pour exploiter les valeurs de mesure fournies par le moyen de comparaison, en particulier l'ordinateur de commande (15, 20), sur l'allongement pendant la fabrication de la bande de matière fibreuse (1, 27) et pour mémoriser les données obtenues.
  5. Machine selon la revendication 4, caractérisée en ce que l'unité d'exploitation (21) est reliée à un autre ordinateur de commande (20), qui est disposé dans une autre unité de traitement (16) travaillant aussi hors ligne par rapport à la machine ou qui est associé à celle-ci.
  6. Machine selon la revendication 5, caractérisée en ce que les valeurs de mesure relatives à l'allongement lors du traitement de la bande de matière fibreuse (1, 27) sont prises en considération dans au moins une étape de traitement ultérieure hors ligne, comme par exemple un calandrage et/ou un couchage et/ou un bobinage.
EP05101128A 2004-04-14 2005-02-15 Machine à papier Expired - Lifetime EP1596002B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004018522 2004-04-14
DE102004018522A DE102004018522A1 (de) 2004-04-14 2004-04-14 Papiermaschine

Publications (2)

Publication Number Publication Date
EP1596002A1 EP1596002A1 (fr) 2005-11-16
EP1596002B1 true EP1596002B1 (fr) 2008-05-07

Family

ID=34938738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101128A Expired - Lifetime EP1596002B1 (fr) 2004-04-14 2005-02-15 Machine à papier

Country Status (4)

Country Link
US (1) US20050274474A1 (fr)
EP (1) EP1596002B1 (fr)
AT (1) ATE394545T1 (fr)
DE (2) DE102004018522A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5163092B2 (ja) * 2007-02-14 2013-03-13 セイコーエプソン株式会社 インクジェットプリンタのリニアエンコーダ記録方法
DE102007033394A1 (de) 2007-07-18 2009-01-22 Voith Patent Gmbh Verfahren und System zur Online-Ermittlung wenigstens einer Dehnungseigenschaft einer laufenden Papier- oder Kartonbahn
DE102008030340B4 (de) * 2008-06-26 2017-06-08 Siemens Aktiengesellschaft Bestimmung von Geschwindigkeitsrelationen zwischen Antriebsgruppen einer Papiermaschine
CN111822377B (zh) * 2020-08-13 2025-02-07 深圳市中润精机科技有限公司 一种微钻自动测长机
JP2024142625A (ja) * 2023-03-30 2024-10-11 セイコーエプソン株式会社 剛度検出装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4008282A1 (de) * 1990-03-15 1991-09-19 Voith Gmbh J M Massnahmen zur erfassung der schrumpfung oder dehnung von warenbahnen
FI990916A7 (fi) * 1999-04-23 2000-10-24 Valmet Corp Menetelmä ja järjestely pitkänomaisen, liikkuvan elimen nopeuden mittaamiseksi paperikoneissa tai paperin jälkikäsittelykoneissa
US6200422B1 (en) * 1999-06-24 2001-03-13 Neles Paper Automation Oy Method and apparatus for controlling a moving paper web
DE10011067A1 (de) * 2000-03-07 2001-09-13 Voith Paper Patent Gmbh Verfahren zur Herstellung und Weiterverarbeitung von Papier
US6909106B2 (en) * 2002-09-17 2005-06-21 Kimberly-Clark Worldwide, Inc. Web velocity-based registration control system

Also Published As

Publication number Publication date
DE102004018522A1 (de) 2005-11-03
US20050274474A1 (en) 2005-12-15
EP1596002A1 (fr) 2005-11-16
ATE394545T1 (de) 2008-05-15
DE502005003946D1 (de) 2008-06-19

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