EP0754159B1 - Verfahren zum einleiten eines vorzeitigen rollenwechsels - Google Patents

Verfahren zum einleiten eines vorzeitigen rollenwechsels Download PDF

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Publication number
EP0754159B1
EP0754159B1 EP95915861A EP95915861A EP0754159B1 EP 0754159 B1 EP0754159 B1 EP 0754159B1 EP 95915861 A EP95915861 A EP 95915861A EP 95915861 A EP95915861 A EP 95915861A EP 0754159 B1 EP0754159 B1 EP 0754159B1
Authority
EP
European Patent Office
Prior art keywords
temperature
reel
roll
web
spool
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
EP95915861A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0754159A1 (de
Inventor
Hans-Helmut JÜHE
Matthias Rauhut
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 Publication Paper AG
Original Assignee
Stora Publication Paper AG
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
Priority claimed from DE4442154A external-priority patent/DE4442154A1/de
Application filed by Stora Publication Paper AG filed Critical Stora Publication Paper AG
Publication of EP0754159A1 publication Critical patent/EP0754159A1/de
Application granted granted Critical
Publication of EP0754159B1 publication Critical patent/EP0754159B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to a predetermined diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/14—Diameter, e.g. of roll or package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/40—Temperature; Thermal conductivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/50—Use of particular electromagnetic waves, e.g. light, radiowaves or microwaves
    • B65H2557/512—Use of particular electromagnetic waves, e.g. light, radiowaves or microwaves infrared

Definitions

  • the present application relates to a method to initiate an early role change a web to be unwound from a sleeve, especially a paper web.
  • Sleeve stands for Drums, cardboard or metal winding cores.
  • the object of the present invention is to achieve this to provide a process that in the manufacture of rolls with large Roll diameter and large web width, especially in the paper industry, a Possibility to determine im Creates core areas occurring defects, so that the production of large rolls up to Exploitation of their physical winding limits is made possible and that on the sleeve necessarily remaining number of layers is minimized.
  • the inventors have now recognized that within of a particular one lying adjacent to the sleeve Range of layers of the paper web certain Temperature phenomena can occur that lead to take advantage of early detection of defects let and initiate a role change allow before it through the flaws too a demolition of the web comes. With the mentioned Temperature phenomena are point or flat spots with a few tenths ° C increased temperature. These places are not to be confused with ring-shaped Temperature phenomena, which are also in the Core area are observed and compared to the layers further away from the sleeve have a high temperature on a web.
  • the paper comes with a high Temperature from the dryer section of the Paper machine.
  • the temperature in the core area drops at first, the further the drum goes away from the nip.
  • the mass of the paper roll grows over 60% of the final mass of the finished roll, sounds the trend of falling temperature in the Core area clearly.
  • the trend is falling Temperatures reversed, and the temperature rose in a zone that is about 5 to 150 mm, especially 10 to 80 mm, from the surface of the Sleeve is removed. It formed only a few mm wide within the zone annular temperature point in the edge area of the Role. Detected temperature differences of ⁇ 0.5 ° C at points or areas inside the narrow annular Temperature point - compared to cooler ones adjacent areas of the annular Temperature point - indicate defects that demolition in the subsequent processing being able to lead.
  • unwinding coated LWC paper with a weight per unit area of 75 g / m 2 there were temperature differences of up to 1.6 ° C at the beginning of the unwinding.
  • the temperature of the rollers is preferably measured on both end faces.
  • the Temperature measurement by an infrared camera the is equipped with a linear guide, traversing across the entire width of the roll to be done.
  • a calculator evaluates that Temperature profile across the entire width of the roll out. If a specified one is exceeded Temperature difference between center and Edge area of the roll is a control signal to the Exchange device for triggering the Exchange process issued.
  • infrared cameras have a resolution accuracy of at least 0.2 ° C proven.
  • the ambient temperature at which the Measurements take place is on average 30 ° C.
  • the methods of the invention are not only based on the winding of webs of paper applicable. Even when winding material webs out Plastic fibers or foils are created with growing role mass warming in the core area the role.
  • FIG. 1 shows the end face of the completely wound roll (1) shortly before it is ejected from the rewinding of a paper machine, not shown.
  • the area of the sleeve (2) is hatched.
  • the dashed circle (4) corresponds to 60% of the finished diameter and indicates the start of temperature monitoring.
  • the paper layers of the annular temperature point (5) have a temperature 1.3 ° C higher than the directly adjacent paper layers.
  • the end face of the roller (1) also shows a local point-like temperature point (6) which, compared to the ring-shaped temperature point (5), again has a temperature which is 0.5 ° C higher.
  • the temperature gradation between the positions of the annular temperature point (5) and the local elevated temperature point (6) can be seen from FIGS. 4 and 5.
  • the perspective view of the roller (1) in Figure 2 shows the position of an annular Temperature point (5) in the edge area (R) of the roll (1).
  • the Hollow cylinder is with thin solid lines drawn, whereas the ring-shaped Temperature point (5) again by a thick dash-dotted line is shown.
  • the measuring device of the infrared camera gives the coordinates of the place, d. H. the radial Distance from the sleeve surface when exceeded a temperature difference of 1 set here ° C to the memory (10).
  • the Exchange facility (11) receives the transaction previously saved coordinates of the location and resolves the preferred one when the place is reached Role change. Determines the measuring device the infrared camera has smaller temperature differences, the change process is only complete Utilization of the wound web length respectively.
  • FIG. 3 An alternative embodiment of the invention is shown in FIG. 3.
  • the sheet-like temperature point (6 ') previously created at maximum roll mass has weakened only slightly in the course of the unwinding time due to the good insulating properties of paper and can also be detected in a larger area.
  • the traversing, constantly measuring infrared camera (8 ') records the temperature profile across the roll width.
  • An internal computer evaluates the temperature difference of the edges (R), which make up about 1/8 of the roll width, compared to the central area of the roll. If there is a set temperature difference, the computer transmits a control signal to the input of the changing device (11 '), which thus triggers the premature roll change.
  • web breakers are successfully avoided by monitoring the temperature effects during un
  • FIGS. 4 and 5 Infrared temperature recordings on rotating LWC base papers are shown in FIGS. 4 and 5.
  • the sleeve diameter (d H ) and the zone (Z) are given in FIG. 5 for better orientation.
  • Figure 4 shows the detail of a flat temperature point (6) on an enlarged scale.
  • Figure 5 the gray gradation of the normally colored infrared image clearly shows the local temperature point (6) occurring within an annular temperature point (5) in the core area of the roll (1).
  • the temperature difference between the annular temperature point (5) and the local flat temperature point (6) is 0.5 ° C.
  • the adjacent paper layers (12) have a temperature of approximately 31.9 ° C.

Landscapes

  • Paper (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)
  • Windings For Motors And Generators (AREA)
EP95915861A 1994-04-08 1995-04-07 Verfahren zum einleiten eines vorzeitigen rollenwechsels Expired - Lifetime EP0754159B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4412075 1994-04-08
DE4412075 1994-04-08
DE4442154 1994-11-26
DE4442154A DE4442154A1 (de) 1994-04-08 1994-11-26 Verfahren zum Einleiten eines vorzeitigen Rollenwechsels
PCT/EP1995/001282 WO1995027676A1 (de) 1994-04-08 1995-04-07 Verfahren zum einleiten eines vorzeitigen rollenwechsels

Publications (2)

Publication Number Publication Date
EP0754159A1 EP0754159A1 (de) 1997-01-22
EP0754159B1 true EP0754159B1 (de) 1998-08-19

Family

ID=25935448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95915861A Expired - Lifetime EP0754159B1 (de) 1994-04-08 1995-04-07 Verfahren zum einleiten eines vorzeitigen rollenwechsels

Country Status (9)

Country Link
US (1) US5769353A (no)
EP (1) EP0754159B1 (no)
AT (1) ATE169885T1 (no)
CA (1) CA2187179C (no)
DK (1) DK0754159T3 (no)
ES (1) ES2119427T3 (no)
FI (1) FI963941A (no)
NO (1) NO306337B1 (no)
WO (1) WO1995027676A1 (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6330024B1 (en) * 1996-09-05 2001-12-11 The Goodyear Tire & Rubber Company System and method for controlling the size of material banks in calenders, mills, and feed mills
DE19653814A1 (de) * 1996-12-21 1998-06-25 Koenig & Bauer Albert Ag Vorratsbahnrolle
FI108635B (fi) * 1997-06-30 2002-02-28 Metso Paper Inc Menetelmä rullanmuodostuksen laadun määrittämiseksi ja rullanmuodostuksen ohjaamiseksi
US6089498A (en) * 1998-06-26 2000-07-18 Sticht; Walter Monitoring means for an end of a thread-like material wound on a supply coil and process for this
DE102004020302B3 (de) * 2004-04-26 2005-08-18 Koenig & Bauer Ag Temperaturüberwachung in einer Maschine
US20110035041A1 (en) * 2009-08-06 2011-02-10 Habakus Stephen J Systems and methods for feed control of rolled stock raw materials
DE102010016055A1 (de) * 2010-03-22 2011-09-22 Krones Ag Vorrichtung zur Kontrolle von Spulen mit aufgewickeltem Folienmaterial
EP2787486A1 (en) * 2013-04-04 2014-10-08 Océ-Technologies B.V. Method for estimating the amount of an unconsumed part of a consumable
WO2018123607A1 (ja) * 2016-12-27 2018-07-05 ソニー株式会社 対空標識、画像処理装置、画像処理方法、及び、プログラム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2749993B2 (ja) * 1990-11-27 1998-05-13 三菱重工業株式会社 帯状物の破断検出装置
IT1249668B (it) * 1991-06-20 1995-03-09 Cavanna Spa Unita' per l'erogazione di materiale in foglio, ad esempio per l`erogazione di fogli di cartone o cartoncino in macchine confezionatrici automatiche.
DE69326978T2 (de) * 1992-07-18 2001-04-26 Barmag Barmer Maschf Verfahren zur Herstellung und/oder Behandlung sowie Aufwicklung eines endlose Materials aus thermopastischem Kunststoff mit Ausgabe eines Qualitätssignals sowie Aufnahmevorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PAPIER, DAS, Bd. 45, Nr. 10a, Oktober 1991 DARMSTADT DE, Seiten v73-v78, H.H. JÜHE 'Praxiserfahrungen bei der Herstellung breiter Tiefdruckrollen mit grossem Durchmesser' in der Anmeldung erwähnt *

Also Published As

Publication number Publication date
NO964170L (no) 1996-10-02
FI963941A0 (fi) 1996-10-02
NO306337B1 (no) 1999-10-25
NO964170D0 (no) 1996-10-02
CA2187179A1 (en) 1995-10-19
WO1995027676A1 (de) 1995-10-19
EP0754159A1 (de) 1997-01-22
FI963941A (fi) 1996-10-02
DK0754159T3 (da) 1998-11-16
ES2119427T3 (es) 1998-10-01
US5769353A (en) 1998-06-23
ATE169885T1 (de) 1998-09-15
CA2187179C (en) 2000-06-20

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