EP0922139B1 - Verfahren zur beseitigung von papierfehlern bei der kontinuierlichen papierherstellung - Google Patents

Verfahren zur beseitigung von papierfehlern bei der kontinuierlichen papierherstellung Download PDF

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Publication number
EP0922139B1
EP0922139B1 EP97937503A EP97937503A EP0922139B1 EP 0922139 B1 EP0922139 B1 EP 0922139B1 EP 97937503 A EP97937503 A EP 97937503A EP 97937503 A EP97937503 A EP 97937503A EP 0922139 B1 EP0922139 B1 EP 0922139B1
Authority
EP
European Patent Office
Prior art keywords
paper
defect
detector
web
speed
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
EP97937503A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0922139A1 (de
Inventor
Hubertus Burkhart
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.)
Stora Enso Publication Paper GmbH and Co KG
Original Assignee
Stora Enso Publication Paper GmbH and Co KG
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 Stora Enso Publication Paper GmbH and Co KG filed Critical Stora Enso Publication Paper GmbH and Co KG
Priority to SI9730264T priority Critical patent/SI0922139T1/xx
Publication of EP0922139A1 publication Critical patent/EP0922139A1/de
Application granted granted Critical
Publication of EP0922139B1 publication Critical patent/EP0922139B1/de
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
    • 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

  • JP 62-295 862 discloses a device for mending paper sheets, where the identified defects are first marked and then in a downstream station with reduced paper web speed be eliminated.
  • a defect detector arranged.
  • the device includes a marker and a control unit for controlling the marking apparatus.
  • an error is detected on the paper web by the error detector an error signal together with a signal arranged on the reel drive Speed sensor given to the control unit. This then calculates an output signal and outputs this to the marker, which is the paper web at a distance offset by the length L from the defect Position printed with a marker.
  • the distance between a marker and a defect corresponds to the run length L, which is required to the Paper web after detection of a mark from the maximum speed to brake out to a standstill. This ensures that after detection of a marking, the error belonging to this marking is easily accessible from outside and can be repaired.
  • One with such markings provided and wound on a roll of paper is then to Rewind given in the next step. Will during rewinding of a detector assembly arranged between the winding rollers recognized such a mark, the rewinder can via its drive and the regulation to the style stand at the position of the defect.
  • the reel is then unwound from an unwinder and fed via guide rollers to a rewinder that opens the paper web wound up a second roll.
  • a rewinder that opens the paper web wound up a second roll.
  • Between the guide rollers is in the running direction of the paper tape comprising a light transmitter and a light receiver Sensor arranged.
  • A is also arranged between the guide rollers Patch gluing device, which the sensor in the direction of the paper tape is connected downstream.
  • This patch adhesive device has a patch strip roll, from the patch patches are promoted, if necessary, on missing parts of the paper webs passing beneath the patch gluing apparatus become.
  • the rewinding device contains a control unit, in which the information obtained by the flaw detector device the location of the detected imperfections can be entered.
  • the invention is therefore based on the object , while avoiding the abovementioned disadvantages, of creating a method by means of which the time lost in paper production by eliminating errors in the paper web can be reduced.
  • the invention proposes that the detector and the station for troubleshooting are arranged along a continuous paper web and that the paper errors in continuous paper production are eliminated at full paper web speed.
  • the paper error is identified and localized by means of conventional means, namely suitable detectors, their detection organs are aligned with the running paper web.
  • previously used means are recorded or calculated Speed of the paper web between the detector and one of the detector spatially downstream station for troubleshooting. Based on this Speed is calculated at the point in time at which the paper error occurred Track section arrives at the station for troubleshooting, the Speed of the track section not as in the prior art known methods to a reduced compared to the normal speed Value or even reduced to zero. Then takes place in the station at the time that is calculated based on the speed of the paper web was, by means of suitable devices, the automatic elimination of the paper error at full paper web speed.
  • the detector can do this for this purpose be set up not only to recognize and localize the paper error, but also also determine its character, e.g. the type and outline of the paper error as well as its location with respect to the width of the paper web.
  • the method according to the invention thus becomes a method for elimination provided by paper defects that enables it to run on a paper web existing defects without loss of time during the continuous Eliminate papermaking.
  • exceptional cases such as the Density of the defects on the paper web a certain maximum value exceeds the information obtained from the detector system-internal also be used and evaluated, the speed of using Defects in the section of track within the station for troubleshooting for a short time interval, to a value required for troubleshooting to reduce. In this way, they are used in papermaking Eliminating errors in the paper web caused time wasted on one absolutely necessary minimum diminished.
  • the paper web before it reaches the detector, passes through another detector and that the other detector performs a preliminary or rough detection of the paper error, whereas the detector for additional detection of the characteristics of the paper defect, e.g. B. its type and contour is set up.
  • the detector for additional detection of the characteristics of the paper defect e.g. B. its type and contour is set up.
  • the additional detector is used exclusively for this must be set up to recognize errors at all and to localize them temporarily.
  • the measurement characteristic of this detector is therefore geared towards rapid detection, less on a detailed record. Rather, details are through the detector upstream of the station is detected. Such Details include the type of paper error, its outline, and the location of the paper error regarding the width of the paper web.
  • the time of arrival of the pre-detected paper error having track section on the detector based on the speed of the Paper path calculated on the way to the detector.
  • the elimination of the paper error by covering the flaw with a quick hardening Fluid is made.
  • the application of the fluid can be done according to a first variant by spraying on one or both sides of the defect.
  • the fluid can be applied to the flaw by roller application be applied.
  • a fast-curing UV varnish is particularly suitable as the fluid.
  • the method according to the invention is advantageously particularly suitable in the context of a paper production line, with the troubleshooting station, the detector as well as the further detector along a continuous paper web be arranged so that the automated removal of paper defects full paper web speed can take place in the paper machine.
  • the drum 1 is shown on the right, on which the end the paper web is wound on the paper machine.
  • This paper web can have paper defects in various places.
  • the paper web is drawn off the drum 1, and then guided over a first deflection roller 2 and a second deflection roller 3.
  • the Paper web itself is shown in the drawing with reference number 4.
  • a detector 5 Between the drum 1 and the deflection roller 2 there is a detector 5 which during continuous paper production those on the paper web Defects identified.
  • the paper error is eliminated at full paper web speed in a station 6, which in the exemplary embodiment is located between the deflection roller 2 and the deflection roller 3 is located. There is one aligned with the paper web 4 Spray head 7 arranged, over which a quick-curing UV varnish on the flaw is sprayed on.
  • the fluid can be applied via rollers possible.
  • the order can, as shown on the drawing, one-sided, or also be on both sides.
  • Use is also an alternative to a quick-curing UV varnish a suitable plastic glue possible. It is crucial that that Fluid has the property on its own that the flaw is flat and film-forming cover, and in this way the paper in the paper error area in further processing, for example in a coating machine or in one Protect printing press.
  • the agent used should be used in the dissolution process of Paper, e.g. B. in committee processing or waste paper recycling easily be separable from the paper again.
  • the application of the fluid in the station 6 takes place automatically, i. H. without human Act. To do this, the exact time at which the Web section with the paper defect in the working area of the spray head 7 reached.
  • the decisive factor here is the speed at which the paper web moves and thus also the defective path section from the detector 5 to the spray head 7 emotional. Therefore, the speed of the paper web between the detector 5 and which detects or calculates station 6 which is spatially downstream of detector 5, and based on the determined speed, the exact time of arrival of the web section having the paper defect is calculated in station 6. The result is also found within the control of the spray head 7 taking into account the measurements performed by the detector 5, d. H.
  • the Spray head 7 does not always work over the entire width of the paper web, but only in terms of the length and width of the web as an incorrectly detected area.
  • the spray head 7 advantageously sits down therefore composed of a large number of individual spray nozzles across the width of the Paper web arranged and individually controllable.
  • a not shown in FIG. second detector can be provided, which is connected upstream of the detector 5.
  • the two detectors differ in their detection characteristics from each other. While the further detector is only set up to have paper errors to be recorded and at least roughly localized with regard to the length of the web, the detector 5 is set up for that already predetected by the second detector Recognize paper errors in terms of their exact character and locate the size and extent of the paper defect.
  • a Sensitization regarding further properties of the paper defect be provided, e.g. B. the detection of light / dark shades or Warps and folds. Then based on the measured values of the detector 5 within the system, to what extent and in what way Troubleshoot is done.
  • the time of arrival of the by the further detector predetected paper defect web section on the detector 5 based on the speed of the paper web on the way from further detector to detector 5 can be calculated. This has the advantage that the Detector 5 already on the arrival and the approximate localization of Error signals is prepared and the detailed recording of the Error.
  • the error detection by the second detector can already be in one of the Paper machine-connected unit, such as the pre-roller, where the location of the paper error is based on the length of the Drum 1 wound paper web in a control unit internally is saved. After the drum 1 is clamped onto the preliminary roll, the system already "knows" where within the length of the wound Paper web errors are found. During papermaking in the Paper machine can then the flaws located on the paper web detected by detector 5 at full paper web speed and then be repaired in the downstream station 6 for troubleshooting. It is alternatively also possible, the drum 1 with a built-in storage element to be provided, which contains the corresponding position data of the paper errors, e.g. B. an electronic chip arranged on the drum.
  • Both the detector 5 and the second one upstream of the detector 5 Detectors can be designed as optical detectors and over the entire Working width of the paper web.
  • Infrared detectors or CCD line cameras come.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Paper (AREA)
  • Making Paper Articles (AREA)
EP97937503A 1996-08-15 1997-07-18 Verfahren zur beseitigung von papierfehlern bei der kontinuierlichen papierherstellung Expired - Lifetime EP0922139B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9730264T SI0922139T1 (en) 1996-08-15 1997-07-18 Process for elimination of paper defects in continuous paper production

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19632988 1996-08-15
DE19632988A DE19632988C1 (de) 1996-08-15 1996-08-15 Verfahren zur Beseitigung von Papierfehlern bei der kontinuierlichen Papierherstellung
PCT/EP1997/003859 WO1998006897A1 (de) 1996-08-15 1997-07-18 Verfahren zur beseitigung von papierfehlern bei der kontinuierlichen papierherstellung

Publications (2)

Publication Number Publication Date
EP0922139A1 EP0922139A1 (de) 1999-06-16
EP0922139B1 true EP0922139B1 (de) 2001-12-12

Family

ID=7802762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97937503A Expired - Lifetime EP0922139B1 (de) 1996-08-15 1997-07-18 Verfahren zur beseitigung von papierfehlern bei der kontinuierlichen papierherstellung

Country Status (16)

Country Link
EP (1) EP0922139B1 (es)
JP (1) JP2001502648A (es)
KR (1) KR20000029927A (es)
CN (1) CN1104526C (es)
AT (1) ATE210762T1 (es)
BR (1) BR9714336A (es)
CA (1) CA2263211C (es)
CZ (1) CZ297849B6 (es)
DE (2) DE19632988C1 (es)
ES (1) ES2165084T3 (es)
ID (1) ID17869A (es)
NO (1) NO313558B1 (es)
PL (1) PL184169B1 (es)
PT (1) PT922139E (es)
RU (1) RU2166017C2 (es)
WO (1) WO1998006897A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028997A2 (en) * 2006-09-06 2008-03-13 Metso Paper, Inc. Method and device for patching a fibre web

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI990159A (fi) * 1999-01-28 2000-07-29 Valmet Automation Inc Menetelmä kuiturainan laadun valvomiseksi
DE10011067A1 (de) * 2000-03-07 2001-09-13 Voith Paper Patent Gmbh Verfahren zur Herstellung und Weiterverarbeitung von Papier
US20020176617A1 (en) * 2001-05-22 2002-11-28 Pti Advanced Filtration, Inc. System and method for continuous integrity testing of a material web
DE102005053037A1 (de) * 2005-11-04 2007-05-10 Maschinenfabrik Rieter Ag Verfahren zur Erfassung von Schmutz in einem bewegten Faserstrang
FI118924B (fi) 2005-12-05 2008-05-15 Metso Paper Inc Laitteisto ja menetelmä katkenneen massaradan poistamiseksi sellukuivaimesta
DE102006047487A1 (de) * 2006-10-05 2008-04-10 Voith Patent Gmbh Trocknungsanordnung
WO2009042638A2 (en) * 2007-09-27 2009-04-02 Abb Ltd. Accurate tracking of web features through converting processes
FI121859B (fi) 2008-11-25 2011-05-13 Metso Automation Oy Menetelmä rainan paikkauksen ohjaamiseksi välirullaimella vastaava järjestelmä
US9053413B2 (en) 2013-07-22 2015-06-09 Xerox Corporation Automatically identifying locations of printing defects within printed rolls
CN104326125B (zh) * 2014-08-28 2016-08-24 北京凌云光技术有限责任公司 瑕疵标签跟踪方法及装置
CN104326301B (zh) * 2014-08-28 2017-02-08 北京凌云光技术有限责任公司 瑕疵标签自动剔除装置及使用自动剔除装置的系统
CN104637156B (zh) 2015-03-06 2017-05-24 广州广电运通金融电子股份有限公司 纸币转出控制方法、装置以及纸币存储设备
CN105500919B (zh) * 2015-12-30 2017-11-10 凌云光技术集团有限责任公司 一种标签缺陷报警方法及装置
IT201600127586A1 (it) * 2016-12-16 2018-06-16 Futura Spa Impianto per la produzione di logs di materiale cartaceo.
CN109366568A (zh) * 2018-11-30 2019-02-22 广州市普理司科技有限公司 多功能自动品检机以及其控制方法
CN111879781B (zh) * 2020-06-17 2022-02-11 西安交通大学 一种基于机器视觉的试纸质量检测系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62295862A (ja) * 1986-06-13 1987-12-23 Toshiba Corp 巻取機のシ−ト補修制御装置
FR2670896B1 (fr) * 1990-12-24 1994-08-12 Siderurgie Fse Inst Rech Dispositif de detection de defauts d'une bande en cours de defilement.
JP2848028B2 (ja) * 1991-05-29 1999-01-20 王子製紙株式会社 ウエブの補修方法及び補修装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028997A2 (en) * 2006-09-06 2008-03-13 Metso Paper, Inc. Method and device for patching a fibre web
WO2008028997A3 (en) * 2006-09-06 2008-05-29 Metso Paper Inc Method and device for patching a fibre web

Also Published As

Publication number Publication date
DE19632988C1 (de) 1998-01-22
ES2165084T3 (es) 2002-03-01
PL331586A1 (en) 1999-07-19
CN1104526C (zh) 2003-04-02
EP0922139A1 (de) 1999-06-16
CZ297849B6 (cs) 2007-04-11
ID17869A (id) 1998-02-05
NO990605D0 (no) 1999-02-09
BR9714336A (pt) 2000-04-11
DE59705791D1 (de) 2002-01-24
ATE210762T1 (de) 2001-12-15
JP2001502648A (ja) 2001-02-27
CN1228132A (zh) 1999-09-08
RU2166017C2 (ru) 2001-04-27
CA2263211C (en) 2006-04-18
PT922139E (pt) 2002-04-29
CA2263211A1 (en) 1998-02-19
KR20000029927A (ko) 2000-05-25
NO313558B1 (no) 2002-10-21
NO990605L (no) 1999-02-09
WO1998006897A1 (de) 1998-02-19
PL184169B1 (pl) 2002-09-30
CZ48899A3 (cs) 1999-07-14

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