EP1614801B1 - Machine pour fabriquer une bande de matière fibreuse - Google Patents

Machine pour fabriquer une bande de matière fibreuse Download PDF

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Publication number
EP1614801B1
EP1614801B1 EP05105791A EP05105791A EP1614801B1 EP 1614801 B1 EP1614801 B1 EP 1614801B1 EP 05105791 A EP05105791 A EP 05105791A EP 05105791 A EP05105791 A EP 05105791A EP 1614801 B1 EP1614801 B1 EP 1614801B1
Authority
EP
European Patent Office
Prior art keywords
machine
production
fibrous web
computer
web
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.)
Not-in-force
Application number
EP05105791A
Other languages
German (de)
English (en)
Other versions
EP1614801A1 (fr
Inventor
Rudolf Münch
Egon Bild
Siegfried Daum
Jörg Dr. Maurer
Tobias Wanke
Werner Reichert
Wolfgang Klotzbücher
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 EP1614801A1 publication Critical patent/EP1614801A1/fr
Application granted granted Critical
Publication of EP1614801B1 publication Critical patent/EP1614801B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • 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

Definitions

  • the invention relates to a machine for producing various types of paper, board, tissue web or other web-like material with a system for specifying the amount of a variety to be produced.
  • a method and a device for calibrating substance density sensors are already known.
  • sensors are used to measure required for the manufacturing process fabric densities of pulp suspensions.
  • the consistency sensors are calibrated online and automatically.
  • the actual substance density values can be determined from the substance density measured values obtained by means of at least one mass balance and by means of sensor characteristic curves.
  • a fabric density sensor is used, which provides the basis for the calibration of the remaining material density sensors.
  • Such a fabric density sensor for measuring the actual consistency is, for example, a sensor for determining the basis weight or the dry weight of the paper web after it has passed through a press.
  • Today's Enterprise Resource Planning (ERP) systems do not take into account electronic during the manufacturing operation, ie. H. online, measured quality data or web inspection data, which give indications of defects or holes in the fibrous web. This makes it impossible to specify how much of a type of fibrous web is to be produced.
  • ERP Enterprise Resource Planning
  • the ERP system dictates how much of a particular variety is needed. Then this target size is used as the target size on the paper machine.
  • the production management may increase this target to take account of the fact that may become part of the committee due to process fluctuations or defects.
  • the finished, with the paper web wound reels are transported from the paper machine to a slitter. There, the reels are cut according to the specifications and needs of the end customer. Defects and other rejects are cut out. Quality measurements made on the paper machine are used to find the rejects. It is hoped that with this procedure, they have produced enough to roll up the quantity of "good production" demanded by the ERP system in the role intended for the end customer despite the scrap produced. If this fails, a small amount of paper has to be re-produced, which is associated with considerable additional costs due to the grade change times in the paper machine.
  • this object is achieved in a machine of the type mentioned above in that the system comprises a measuring arrangement for measuring quality data during the production of the fibrous web and that the system determines the amount of the variety to be produced on the basis of the data measured by the measuring arrangement during manufacture.
  • the ERP system determines the required production online based on the measured quality data.
  • the invention thus solves the problem of detecting the rejects during production, so that production can be changed online by the ERP system.
  • the goal is that the good production after passing through the Slitter is achieved and the reserve can be kept as small as possible.
  • the invention is applicable not only for fibrous webs, but quite generally for web-shaped goods.
  • the measuring arrangement comprises a device for detecting such locations in the fibrous web, which count as scrap.
  • a device for detecting such locations in the fibrous web which count as scrap.
  • an optical sensor which is arranged displaceably on a beam in the transverse direction, or a plurality of optical sensors which are mounted on a cross-member and detect the entire width of the fibrous web is suitable.
  • a cutting plan for cutting the entire role of the fibrous web in the longitudinal and / or create in the transverse direction for this purpose, a corresponding device is provided.
  • the goal can be achieved, as far as possible to avoid waste and to produce as little waste as possible.
  • the cutting plan places spots with defects and quality defects within the crop or in the vicinity of cut edges, so that they are not printed there later and the quality of the printed paper is not reduced.
  • a particularly advantageous embodiment of the invention comprises, within the system, a computer which calculates, during production, the scrap produced when the optimum cutting plan is used.
  • the sites with quality defects can be or with defects in the fibrous web within the cutting plan so that they lie in the area of the cut or in the area of the cutting edges.
  • the calculator calculates the total production under given assumptions of waste or waste. Sometimes it is clear that, for example, an unacceptable streak will be produced in a certain paper zone in the transverse direction of the web and that this production problem will persist for some time to come.
  • the computer determines the volume of the required production of the fibrous web in a continuous or at certain times calculation method based on the current estimate of the committee's total production.
  • the computer carries out a cyclic waste optimization which takes account of past and expected future production data.
  • This method includes that the calculator extrapolate future production based on current process conditions. There are several possibilities for this:
  • the quality of the paper web produced is divided into different grades and quality classes.
  • such a method also takes into account that different customers have different quality class requirements and ensures that even for the most demanding customers a sufficient amount of the required quality is produced.
  • the computer takes into account current and future data of the machine, in particular settings and conversions of the machine. Likewise, the computer can create a classification of the fibrous web produced according to different quality levels or grades.
  • the machine advantageously comprises a slitter which, on the basis of the data generated by the computer, determines the diameter, width and sequence of fibrous web rolls to be produced from the drum.
  • the slitter can also be arranged separately from the machine for producing the fibrous web and further process a completely wound roll. Also in this case, all the data about the quality of the web is made available to the slitter, so that this determines the order and the lengths and the diameter of the rolls to be produced for the customers.
  • the waste optimization serves, for example, to optimize the longitudinal cuts in the slitter-winder by evaluating all data of the quality control system, for example via the transverse profile, the thickness, the moisture, defects in the fibrous web, etc.
  • the usable width can be determined Optimal arrangement within the spool width.
  • the formats of the individual rolls can be arranged within the useful width. In this case, small defects are placed in the area that is cut out, so that they no longer bother the end customer. Committee rolls can be cut specifically.
  • the cross sections can be optimized.
  • the drum lengths can be optimized taking into account wrapped defects. Downgrades can also be planned. The shutdown can be completed automatically.
  • the drum is optimized to throw lengths, i. on the length of the paper web in the finished roll after slitting.
  • the order of the rolls of customized rolls (finished rolls) from the tambour initially generated by the machine can be determined. In the process, defects are placed at the beginning or at the end of finished rolls. In this way, the number of splices within the finished rolls can be significantly reduced.
  • the advantages of the invention are the reduction of rejects and the saving or reduction of reserve production.
  • By cutting out areas of inferior quality it is possible to avoid breaks in the finished rolls.
  • the number of splices in the finished rolls is reduced. All in all, complaints about finished rolls are excluded or at least considerably reduced.
  • online and automatic measuring sensors are used, with the help of which not only the consistency or the ash content of a fibrous web can be determined, but also all other measurable parameters. These are, for example, the pH value, the air content of the fibrous web, its charge, moisture, etc. All values are fed together with the coordinates of the fibrous web, which are among the measured values, to the computer for evaluation, so that this quality and deviations Calculated by a per customer set target quality.
  • a paper machine 1 ( Fig. 1 ) comprises a system 2 for measuring and recording the quality of the produced paper web including all defects. In addition, the machine-specific settings, ie the process states, are recorded.
  • the target production, P target is determined on the basis of predefined values for the reserve production R, for the good production G and for the scrap A. This is done by a system 3 for the cyclic calculation of P setpoint .
  • a system 4 for determining the current Committee A and preferably also the expected Committee A is provided over the entire production.
  • This "cyclic” an “optimal cutting plan” is set up for cutting the paper web in the longitudinal and transverse directions. This minimizes overall waste including rejects.
  • the system 4 is in connection with a system 5 for specifying the required good production G and a desired production reserve R.
  • the system 5 is for example part of a company-wide system for determining the existing resource quantities for production planning.
  • the useful width N ( Fig. 2a ) of the paper web running in the machine direction (MD) are arranged within the entire width of the main cylinder T extending in the transverse direction CD in such a way that defects no longer fall within the range of the useful width N but are cut away during cutting.

Landscapes

  • Paper (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (13)

  1. Machine (1) pour la fabrication de différents types de bandes de papier, carton ou papier-tissu, ou d'un autre produit en forme de bande, comprenant un système (3) pour prédéfinir la quantité d'un type à fabriquer,
    caractérisée en ce que
    le système (3) comprend un agencement de mesure (2) pour la mesure de données de qualité pendant la fabrication de la bande fibreuse et en ce que le système (3) établit, à l'aide des données mesurées par l'agencement de mesure (2) pendant la fabrication, la quantité du type à fabriquer.
  2. Machine (1) selon la revendication 1,
    caractérisée en ce que
    l'agencement de mesure comprend un dispositif pour détecter les endroits (8, 9, 10) dans la bande fibreuse, qui doivent être mis au rebut.
  3. Machine (1) selon la revendication 1 ou la revendication 2,
    caractérisée en ce que
    l'on prévoit un dispositif (6) pour créer un plan de coupe pour couper l'ensemble du rouleau de la bande fibreuse dans le sens longitudinal et/ou dans le sens transversal.
  4. Machine (1) selon la revendication 3,
    caractérisée en ce que
    des endroits (8, 9, 10) pourvus d'erreurs et de défauts de qualité peuvent être placés par le plan de coupe dans le déchet ou à proximité des bords de coupe.
  5. Machine (1) selon la revendication 4,
    caractérisée en ce que
    le système comprend un ordinateur qui, pendant la fabrication, calcule le niveau de rejet qui se produit lors de l'utilisation du plan de coupe optimale.
  6. Machine (1) selon la revendication 5,
    caractérisée en ce que
    l'ordinateur place des endroits (8, 9, 10) pourvus d'erreurs ou de défauts de qualité dans la bande fibreuse à l'intérieur du plan de coupe, de telle sorte qu'ils se situent dans la région du déchet ou dans la région des bords de coupe.
  7. Machine (1) selon la revendication 5 ou 6,
    caractérisée en ce que
    l'ordinateur calcule la production totale à l'aide de suppositions prédéfinies pour la production subséquente de pièces à mettre au rebut ou de déchets.
  8. Machine (1) selon l'une quelconque des revendications 5 à 7,
    caractérisée en ce que
    l'ordinateur établit en continu, ou à intervalles définis, le taux de production exigé de la bande fibreuse à l'aide de l'évaluation actuelle respective de la production totale.
  9. Machine (1) selon la revendication 8,
    caractérisée en ce que
    l'ordinateur effectue une optimisation cyclique des déchets, qui tient compte des données de production passées et futures attendues.
  10. Machine (1) selon l'une quelconque des revendications 5 à 9,
    caractérisée en ce que
    l'ordinateur effectue une extrapolation de la production future sur la base des états actuels du processus.
  11. Machine (1) selon la revendication 10,
    caractérisée en ce que
    l'ordinateur tient compte des données actuelles et futures de la machine, notamment des ajustements et des modifications de la machine.
  12. Machine (1) selon l'une quelconque des revendications 5 à 11,
    caractérisée en ce que
    l'ordinateur effectue une classification de la bande fibreuse produite en fonction de différents degrés de qualité ou de classes de qualité.
  13. Machine (1) selon l'une quelconque des revendications 5 à 12,
    caractérisée en ce
    qu'elle comprend un dispositif de découpe de rouleaux (7) qui, à partir des données produites par l'ordinateur, établit le diamètre, la largeur et la séquence des rouleaux de bande fibreuse à produire à partir du tambour.
EP05105791A 2004-07-08 2005-06-29 Machine pour fabriquer une bande de matière fibreuse Not-in-force EP1614801B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004033236A DE102004033236A1 (de) 2004-07-08 2004-07-08 Maschine zur Herstellung einer Faserstoffbahn

Publications (2)

Publication Number Publication Date
EP1614801A1 EP1614801A1 (fr) 2006-01-11
EP1614801B1 true EP1614801B1 (fr) 2008-09-03

Family

ID=35056946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05105791A Not-in-force EP1614801B1 (fr) 2004-07-08 2005-06-29 Machine pour fabriquer une bande de matière fibreuse

Country Status (4)

Country Link
US (1) US7520962B2 (fr)
EP (1) EP1614801B1 (fr)
AT (1) ATE407258T1 (fr)
DE (2) DE102004033236A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1953616B1 (fr) * 2007-02-01 2009-10-14 ABB Oy Procédé de création d'un plan de coupe optimisé pour un matériau en forme de bande
CN103508251B (zh) * 2013-10-09 2016-06-01 金东纸业（江苏）股份有限公司 纸病自动排切系统及方法
CN111366702A (zh) * 2020-03-24 2020-07-03 包头钢铁（集团）有限责任公司 一种无取向硅钢在线智能精准分切系统及其在线智能精准分切方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6299730B1 (en) * 1999-09-20 2001-10-09 The Mead Corporation Method and system for monitoring web defects along a moving paper web
US20040096869A1 (en) * 2001-04-04 2004-05-20 Daniel Martineau Antisense calpain nucleotides and uses thereof
DE10121775A1 (de) 2001-05-04 2002-11-07 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Kalibrieren von Stoffdichtesensoren
JP2003141214A (ja) * 2001-10-30 2003-05-16 Mitsubishi Electric Corp 生産計画作成システム、生産計画作成方法、および生産計画の作成をコンピュータに実行させるためのプログラム
DE10253822A1 (de) * 2002-11-18 2004-05-27 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur automatischen Sensorkalibrierung
DE10306269A1 (de) * 2003-02-14 2004-08-26 Voith Paper Patent Gmbh Verfahren zur Herstellung von Materialbahnen
EP1524614A1 (fr) * 2003-10-14 2005-04-20 Bayer Business Services GmbH Méthode pour administrer de la donnée analytique dans un réseau comportant un système de planification d'entreprise et une base de donnée

Also Published As

Publication number Publication date
DE502005005237D1 (de) 2008-10-16
ATE407258T1 (de) 2008-09-15
US7520962B2 (en) 2009-04-21
DE102004033236A1 (de) 2006-02-09
US20060076119A1 (en) 2006-04-13
EP1614801A1 (fr) 2006-01-11

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