WO1995027676A1 - Verfahren zum einleiten eines vorzeitigen rollenwechsels - Google Patents
Verfahren zum einleiten eines vorzeitigen rollenwechsels Download PDFInfo
- Publication number
- WO1995027676A1 WO1995027676A1 PCT/EP1995/001282 EP9501282W WO9527676A1 WO 1995027676 A1 WO1995027676 A1 WO 1995027676A1 EP 9501282 W EP9501282 W EP 9501282W WO 9527676 A1 WO9527676 A1 WO 9527676A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roll
- temperature
- web
- sleeve
- zone
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000000977 initiatory effect Effects 0.000 title claims description 9
- 230000002028 premature Effects 0.000 title claims description 6
- 239000000463 material Substances 0.000 title description 4
- 238000004804 winding Methods 0.000 claims description 16
- 238000009529 body temperature measurement Methods 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000000123 paper Substances 0.000 description 27
- 230000007547 defect Effects 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001417494 Sciaenidae Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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 for initiating a premature roll change of a web to be unwound from a sleeve, in particular a paper web.
- sleeves stands for drum, winding cores made of cardboard or metal.
- the present invention has for its object to provide a method that creates a possibility for the early detection of defects occurring in the core area in the manufacture of rolls with large roll diameter and large web width, especially in the paper industry, so that the production of Large rolls are made possible until their physical winding limits are used and the number of remaining layers that is necessarily left on the core is minimized.
- the inventors have now recognized that within a certain region of layers of the paper web lying adjacent to the sleeve, certain temperature phenomena can occur which result in Let early detection of defects take advantage of and enable the initiation of a roll change before the defects result in the web being torn off.
- the temperature phenomena mentioned are punctiform or sheet-like locations with a temperature which is increased by a few tenths of a degree Celsius. These points are not to be confused with ring-shaped temperature phenomena, which can also be observed in the core area and which have an elevated temperature in comparison to the layers of a material web which are further away from the sleeve.
- the invention therefore proposes a method for initiating a premature roll change of a web to be unwound from a sleeve, in particular a paper web, which is characterized by the combination of the following features:
- the temperature is measured with a non-contact temperature measuring device, while the roll has 100% to 60% of its mass during the winding or unwinding process, in a zone which is up to 150 mm in the radial direction from the surface of the sleeve,
- the radial Distance from the sleeve surface determined - the determined distance is stored to trigger a signal that triggers the roll change when the distance is reached.
- the paper comes out of the dryer section of the paper machine at a high temperature.
- the temperature in the core area initially drops significantly the further the drum moves away from the nip. If the mass of the paper roll grows above 60% of the final mass of the finished roll, the tendency of falling temperature in the core area subsides significantly.
- the trend of falling temperatures reversed and the temperature rose in a zone which is approximately 5 to 150 mm, in particular 10 to 80 mm, from the surface of the sleeve.
- a ring-shaped temperature point just a few mm wide formed in the edge region of the roll within the zone. Detected temperature differences of ⁇ 0.5 ° C at point or area-shaped locations within the narrow, ring-shaped ones Temperature point - in comparison to cooler adjacent areas of the annular temperature point - indicate defects that can lead to tears in the subsequent processing.
- the method according to the invention enables the detection of defects for the first time by means of temperature monitoring.
- both end faces of the roll are monitored, since defects can occur arbitrarily in the edge region on one of the two sides and in no way have to occur on both sides at the same time.
- the processing process proceeds as requested by the processor and optimized for the best possible material utilization. If, on the other hand, a critical value is displayed, ie a determined temperature difference of ⁇ 0.5 ° C compared to cooler neighboring areas, the simplest form of reaction would be to issue an alarm to the machine operator as an indication of a fault.
- 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 invention provides a method for initiating a roll change of a web to be unwound from a sleeve, in particular a paper web in web printing presses, to achieve the object Combination of the following features is marked:
- the second method according to the invention therefore enables the early detection of imperfections by means of temperature monitoring even when there is no frontal access to the roll, as is often the case in the unwinding station of web-fed printing presses Reasons.
- the temperature measurement traversed across the entire width of the roll using an infrared camera equipped with a linear guide.
- a computer evaluates the temperature profile across the entire width of the roll. If a predetermined temperature difference between the center and edge area of the roll is exceeded, a control signal is output to the changing device to trigger the changing process.
- infrared cameras with a resolution accuracy of at least 0.2 ° C. have proven successful.
- the ambient temperature at which the measurements take place is on average 30 ° C.
- the methods according to the invention are not only applicable to the winding of webs of paper.
- the core mass of the roll increases with increasing roll mass.
- Figure 1 shows the end of a roll with a sketchy representation of an annular Temperature point and a point-like point with increased temperature
- FIG. 2 shows a spatially arranged schematic representation of the first method according to the invention
- FIG. 3 shows a schematic illustration of the second method according to the invention according to patent claim 3
- 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 face the annular temperature point (5) 1.3 ° C higher temperature 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 region (R) of the roller
- the Meßeinric * ng the infrared camera are the coordinates of the location, ie the radial distance from the sleeve surface on exceeding a temperature set here difference of 1 ° C to the memory (10).
- the changeover device (11) of the processing receives the previously stored coordinates of the location and triggers the advance role change when the location is reached. If the measuring device of the infrared camera detects smaller temperature differences, the changing process will only take place when the wound length of the web is fully utilized.
- 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.
- too web breakers are successfully avoided by monitoring the temperature effects during
- FIGS. 4 and 5 Infrared temperature recordings on rotating LWC base papers are shown in FIGS. 4 and 5.
- the sleeve diameter (djj) 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 approx. 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)
- Replacement Of Web Rolls (AREA)
- Winding Of Webs (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK95915861T DK0754159T3 (da) | 1994-04-08 | 1995-04-07 | Fremgangsmåde til iværksættelse af et rulleskift før tiden |
DE59503270T DE59503270D1 (de) | 1994-04-08 | 1995-04-07 | Verfahren zum einleiten eines vorzeitigen rollenwechsels |
CA002187179A CA2187179C (en) | 1994-04-08 | 1995-04-07 | Method of initiating the premature replacement of a roll of material |
US08/722,114 US5769353A (en) | 1994-04-08 | 1995-04-07 | Method of initiating the premature replacement of a roll of material |
EP95915861A EP0754159B1 (de) | 1994-04-08 | 1995-04-07 | Verfahren zum einleiten eines vorzeitigen rollenwechsels |
NO964170A NO306337B1 (no) | 1994-04-08 | 1996-10-02 | FremgangsmÕte ved avbryting av en vikleprosess |
FI963941A FI963941A (fi) | 1994-04-08 | 1996-10-02 | Menetelmä materiaalirullan ennenaikaisen vaihdon aloittamiseksi |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4412075 | 1994-04-08 | ||
DEP4412075.3 | 1994-04-08 | ||
DEP4442154.0 | 1994-11-26 | ||
DE4442154A DE4442154A1 (de) | 1994-04-08 | 1994-11-26 | Verfahren zum Einleiten eines vorzeitigen Rollenwechsels |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995027676A1 true WO1995027676A1 (de) | 1995-10-19 |
Family
ID=25935448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/001282 WO1995027676A1 (de) | 1994-04-08 | 1995-04-07 | Verfahren zum einleiten eines vorzeitigen rollenwechsels |
Country Status (9)
Country | Link |
---|---|
US (1) | US5769353A (de) |
EP (1) | EP0754159B1 (de) |
AT (1) | ATE169885T1 (de) |
CA (1) | CA2187179C (de) |
DK (1) | DK0754159T3 (de) |
ES (1) | ES2119427T3 (de) |
FI (1) | FI963941A (de) |
NO (1) | NO306337B1 (de) |
WO (1) | WO1995027676A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999001366A1 (en) * | 1997-06-30 | 1999-01-14 | Valmet Corporation | Method for determining the quality of reeling or winding and for controlling the reeling or winding |
Families Citing this family (8)
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 |
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 (de) * | 2013-04-04 | 2014-10-08 | Océ-Technologies B.V. | Verfahren zur Schätzung der Menge eines nichtverbrauchten Teils eines Verbrauchsprodukts |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04191647A (ja) * | 1990-11-27 | 1992-07-09 | Mitsubishi Heavy Ind Ltd | 帯状物の破断検出装置 |
GB2256855A (en) * | 1991-06-20 | 1992-12-23 | Cavanna Spa | Continuously supplying sheets of material |
EP0580071A2 (de) * | 1992-07-18 | 1994-01-26 | Barmag Ag | Verfahren zur Herstellung und/oder Behandlung sowie Aufwicklung eines endlose Materials aus thermopastischem Kunststoff mit Ausgabe eines Qualitätssignals sowie Aufnahmevorrichtung |
-
1995
- 1995-04-07 ES ES95915861T patent/ES2119427T3/es not_active Expired - Lifetime
- 1995-04-07 US US08/722,114 patent/US5769353A/en not_active Expired - Fee Related
- 1995-04-07 AT AT95915861T patent/ATE169885T1/de not_active IP Right Cessation
- 1995-04-07 CA CA002187179A patent/CA2187179C/en not_active Expired - Fee Related
- 1995-04-07 EP EP95915861A patent/EP0754159B1/de not_active Expired - Lifetime
- 1995-04-07 DK DK95915861T patent/DK0754159T3/da active
- 1995-04-07 WO PCT/EP1995/001282 patent/WO1995027676A1/de active IP Right Grant
-
1996
- 1996-10-02 FI FI963941A patent/FI963941A/fi not_active Application Discontinuation
- 1996-10-02 NO NO964170A patent/NO306337B1/no unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04191647A (ja) * | 1990-11-27 | 1992-07-09 | Mitsubishi Heavy Ind Ltd | 帯状物の破断検出装置 |
GB2256855A (en) * | 1991-06-20 | 1992-12-23 | Cavanna Spa | Continuously supplying sheets of material |
EP0580071A2 (de) * | 1992-07-18 | 1994-01-26 | Barmag Ag | Verfahren zur Herstellung und/oder Behandlung sowie Aufwicklung eines endlose Materials aus thermopastischem Kunststoff mit Ausgabe eines Qualitätssignals sowie Aufnahmevorrichtung |
Non-Patent Citations (2)
Title |
---|
H.H. JÜHE: "Praxiserfahrungen bei der Herstellung breiter Tiefdruckrollen mit groem Durchmesser", PAPIER, DAS, vol. 45, no. 10a, DARMSTADT DE, pages v73 - v78 * |
PATENT ABSTRACTS OF JAPAN vol. 16, no. 516 (P - 1443) 23 October 1992 (1992-10-23) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999001366A1 (en) * | 1997-06-30 | 1999-01-14 | Valmet Corporation | Method for determining the quality of reeling or winding and for controlling the reeling or winding |
DE19882374B4 (de) * | 1997-06-30 | 2006-04-13 | Metso Paper, Inc. | Verfahren zur Bestimmung der Qualität der Formierung einer Bobine oder Rolle einer Papier - oder Kartonbahn und zur Steuerung der Bobinen - oder Rollenformierung und - wicklung |
Also Published As
Publication number | Publication date |
---|---|
FI963941A0 (fi) | 1996-10-02 |
NO964170D0 (no) | 1996-10-02 |
EP0754159A1 (de) | 1997-01-22 |
CA2187179C (en) | 2000-06-20 |
NO964170L (no) | 1996-10-02 |
DK0754159T3 (da) | 1998-11-16 |
US5769353A (en) | 1998-06-23 |
ATE169885T1 (de) | 1998-09-15 |
FI963941A (fi) | 1996-10-02 |
ES2119427T3 (es) | 1998-10-01 |
EP0754159B1 (de) | 1998-08-19 |
NO306337B1 (no) | 1999-10-25 |
CA2187179A1 (en) | 1995-10-19 |
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