EP2304105A1 - Verfahren und vorrichtung zur erkennung des zustandes eines bandes - Google Patents
Verfahren und vorrichtung zur erkennung des zustandes eines bandesInfo
- Publication number
- EP2304105A1 EP2304105A1 EP09769163A EP09769163A EP2304105A1 EP 2304105 A1 EP2304105 A1 EP 2304105A1 EP 09769163 A EP09769163 A EP 09769163A EP 09769163 A EP09769163 A EP 09769163A EP 2304105 A1 EP2304105 A1 EP 2304105A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- belt
- light
- cracks
- circulating
- optoelectronic detector
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000005693 optoelectronics Effects 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000011156 evaluation Methods 0.000 claims description 9
- 238000011109 contamination Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 2
- 239000011111 cardboard Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000011087 paperboard Substances 0.000 abstract 1
- 238000001028 reflection method Methods 0.000 description 6
- 230000011664 signaling Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/006—Calenders; Smoothing apparatus with extended nips
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/0066—Calenders; Smoothing apparatus using a special calendering belt
-
- 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 method for detecting the state of a belt originally having an at least substantially closed surface, in particular steel strip, for a machine for producing and / or treating a fibrous web, in particular paper or board web, in particular for detecting cracks in the web.
- WO-A-2005/056921 describes a method for measuring the temperature and the thickness profile of a moving fibrous web.
- the web thickness is determined by an eddy current measurement.
- the temperature and thickness measurements are in each case between two guide rollers.
- the invention has for its object to provide an improved method and an improved device of the type mentioned, with which in a reliable, simple and cost-effective manner, the state of particular running belts can be monitored.
- this object is achieved by a method for detecting the state of a belt originally having an at least substantially closed surface, in particular steel strip, for a machine for producing and / or treating a fibrous web, in particular paper or board web, in particular for detecting Cracks in the tape, in which the circulating in the manufacturing machine belt is monitored online by means of at least one optoelectronic detector with at least one circulating light emitting light transmitter and at least one affected by the circulating band light receiving light receiver on the condition or cracks out ,
- the system concerned can easily withstand the normal environmental conditions in a paper machine and, for example, the conditions prevailing in a drying hood, in particular with regard to the prevailing temperature and humidity.
- the system in question can be much simpler and correspondingly more cost-effective in comparison to the previously customary systems.
- the circulating belt is monitored for its condition or cracks by means of at least one optoelectronic detector with light emitter and light receiver arranged on different sides of the circulating belt.
- the circulating belt is monitored by means of at least one optoelectronic detector with light transmitter and light receiver arranged on the same side of the circulating belt in the reflection process for its state or cracks.
- At least one light transmitter can be used simultaneously both for the transmitted-light method and for the reflection method.
- the circulating band is monitored by means of at least one optoelectronic detector in the reflection method, it is expedient if a light beam incident obliquely on the revolving band is generated by means of the light emitter and a correspondingly obliquely reflected light beam from the band is received in the light receiver.
- the circulating band in the monitoring area has a curved surface is guided. If cracks occur in the band, they gap as a result of the band curved over the relevant support surface.
- the normally at least substantially planar surface of the strip then optionally shows a significant defect, on which, in particular, the reflection of the light beam is correspondingly changed. Compared to the normal state, an altered light incidence is measured via the light receiver.
- the circulating belt is guided in the monitoring area over a particular rotating roller, in particular guide roller.
- the measured values obtained via the optoelectronic detector are compared with at least one predefinable limit value and an exceeding of the limit value is signaled, in particular for an alarm, a shutdown of the machine and / or the like.
- the corresponding evaluation means are preferably designed with regard to their hardware and / or in particular their software in such a way that they are able to recognize and provide cracks in comparison to contaminants. if necessary reliably trigger signaling, for example for an alarm.
- the circulating belt is monitored for its condition or for cracks by means of at least one optoelectronic detector at least in the region of its two lateral edges or on the driver side and the drive side of the machine.
- the circulating belt prefferably to be monitored for its condition or for cracks exclusively in the area of these two lateral edges or on the driver side and the drive side of the machine by means of at least one optoelectronic detector.
- a plurality of spaced-apart, in particular adjacent light receiver can be used.
- a plurality of light transmitters can also be used. It is conceivable, for example, assign each light receiver own light transmitter. However, it is also possible, for example, to use detectors in which a plurality of light receivers are assigned to at least one light transmitter.
- the arrangement of at least one optoelectronic detector on the guide side and on the support side, for example, with respect to a guide roll over which the web is guided conceivable.
- the measurement can only be performed on the edge, since the crack formation there, almost always in the case of a steel strip, always has its starting point has.
- the band, in particular steel band passes through the regulation, it is advantageous if several optoelectronic detectors are provided or mounted side by side. For example, about 10 optoelectronic sensors would be conceivable on each side at a respective distance of, for example, about 10 mm.
- the system in question can be accommodated in a housing for protection against contamination, which has an opening only to the band or to the roller supporting it.
- the components, in particular electronic components of the detector or detectors, can be cooled by a corresponding pressurization, whereby at the same time dirt deposits act counteracted.
- the device according to the invention for detecting the condition of a belt originally comprising an at least substantially closed surface, in particular steel strip, for a machine for producing and / or treating a fibrous web, in particular paper or board web, in particular for detecting cracks in the web is characterized Accordingly, at least one optoelectronic detector is provided with at least one light transmitter which acts on the rotating belt and at least one light receiver which is influenced by the circulating belt in order to monitor the rotating belt online for its condition or for cracks.
- This device preferably comprises at least one optoelectronic detector whose light emitter and light receiver are arranged on different sides of the circulating belt in order to monitor the circulating belt in the transmitted light method for its condition or cracks.
- the device according to the invention can be constructed from simple commercially available components. After the unique optoelectronic and mechanical development and the programming of the signal evaluation, the follow-up costs for each further optoelectronic detector are relatively low.
- the single figure of the drawing shows a schematic representation of an exemplary embodiment of a device according to the invention for detecting the state of an originally at least substantially closed surface having belt 12, which may be, for example, a steel strip.
- the belt 12 can be used for example in a machine for producing and / or treating a fibrous web, in particular paper or board web.
- the device 10 which is provided in particular for detecting cracks in the strip 12, comprises at least one optoelectronic detector 14 with at least one of the rotating belt 12 with light acting on the light transmitter 16 and at least one influenced by the rotating belt 12 light receiving light receiver 18.
- the rotating belt 12 is monitored online for its condition, here, for example, cracks out.
- At least one optoelectronic detector 14 is provided, the light emitter 16 and light receiver 18 are arranged on the same side of the rotating belt 12 to monitor the rotating belt in the reflection process on the condition or cracks out.
- At least one optoelectronic detector 14 whose light emitter 16 and light receiver 18 are arranged on different sides of the revolving belt 12 in order to monitor the revolving belt 12 in the transmitted light process for its condition or cracks.
- a combination of optoelectronic detectors for monitoring in the transmitted light method and for monitoring in the reflection method is also conceivable.
- the circulating belt 12 in the monitoring area may be expediently guided over a curved surface 20, which in the present case is formed, for example, by a rotating roller 22, for example a guide roller.
- a rotating roller 22 for example a guide roller.
- an obliquely incident on the rotating belt 12 light beam 24 is generated by means of the light emitter 16 and receive a corresponding obliquely reflected from the belt 12 light beam 26 from the light receiver 18.
- the at least one optoelectronic detector 14 is assigned a particular electronic control and / or evaluation device 28 for controlling the detector 14 or for evaluating the measured values obtained.
- the measured values obtained via the optoelectronic detector 14 can be compared, for example, with at least one predefinable limit value in order to trigger a corresponding signaling when this limit value is exceeded, in particular for an alarm, a shutdown of the machine and / or the like.
- the circulating belt 12 is monitored, for example, at least in the region of its two lateral edges or on the driver's side and the drive side of the machine by means of at least one optoelectronic detector 14 on the condition or cracks. It is possible, for example, the circulating belt 12 exclusively in these lateral edges or on the driver's side and the drive side of the machine. It is possible, for example, the circulating belt 12 exclusively in these lateral edges
- a plurality of spaced-apart, in particular juxtaposed light receiver 18 are used.
- at least one light transmitter 16 is assigned a plurality of light receivers 18.
- the provided in a respective edge region of the light receiver 18 and optionally light emitter 16 may in particular be in the strip running direction next to each other.
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008002658A DE102008002658A1 (de) | 2008-06-26 | 2008-06-26 | Verfahren und Vorrichtung zur Erkennung des Zustandes eines Bandes |
| PCT/EP2009/057509 WO2009156314A1 (de) | 2008-06-26 | 2009-06-17 | Verfahren und vorrichtung zur erkennung des zustandes eines bandes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2304105A1 true EP2304105A1 (de) | 2011-04-06 |
| EP2304105B1 EP2304105B1 (de) | 2011-12-07 |
Family
ID=41153231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09769163A Not-in-force EP2304105B1 (de) | 2008-06-26 | 2009-06-17 | Verfahren und vorrichtung zur erkennung des zustandes eines bandes |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2304105B1 (de) |
| CN (1) | CN102066662B (de) |
| AT (1) | ATE536440T1 (de) |
| DE (1) | DE102008002658A1 (de) |
| WO (1) | WO2009156314A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009003111A1 (de) * | 2009-05-14 | 2010-11-18 | Voith Patent Gmbh | Auftragsvorrichtung |
| DE102011078010A1 (de) | 2011-06-22 | 2012-12-27 | Voith Patent Gmbh | Überwachung einer Bespannung |
| EP2723942A1 (de) | 2011-06-22 | 2014-04-30 | Voith Patent GmbH | Überwachung einer bespannung |
| DE102012209529A1 (de) | 2012-06-06 | 2013-12-12 | Voith Patent Gmbh | Überwachung einer Bespannung |
| DE102011081228A1 (de) | 2011-08-19 | 2013-02-21 | Voith Patent Gmbh | Verfahren zur Erkennung des Zustandes eines Bandes und Maschine zur Herstellung und/oder Behandlung einer Faserstoffbahn |
| CN107782739B (zh) * | 2016-08-31 | 2021-01-08 | 鞍钢股份有限公司 | 一种基于激光的带钢孔洞识别标识装置及方法 |
| DE102020000570A1 (de) | 2020-01-29 | 2021-07-29 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Verfahren zur Überwachung eines Stahlbandes in einer kontinuierlichen Presse und kontinuierliche Presse |
| DE102020006637A1 (de) | 2020-10-29 | 2022-05-05 | Siempelkamp Maschinen- Und Anlagenbau Gmbh | Verfahren zur Überwachung eines Stahlbandes in einer kontinuierlichen Presse auf Materialanhaftungen und kontinuierliche Presse |
| DE102024207412A1 (de) * | 2024-08-06 | 2026-02-12 | Volkswagen Aktiengesellschaft | Verfahren und Vorrichtung zur Ermittlung des Verschmutzungsgrades und/ oder der Verschmutzungsart von Halbzeugen |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005056921A1 (en) | 2003-12-10 | 2005-06-23 | Metso Paper, Inc. | A method for controlling the running parameters in an apparatus for processing a fibrous web and a device for applying the said method |
| DE102005007835A1 (de) * | 2005-02-21 | 2006-08-31 | Voith Paper Patent Gmbh | Presswalzenüberwachung |
| FI6932U1 (fi) | 2005-10-26 | 2005-12-30 | Metso Paper Inc | Laite kuiturainakoneen metallihihnan reunasärön poistamiseksi |
| DE102007045895A1 (de) * | 2007-09-26 | 2009-04-09 | Voith Patent Gmbh | Bandkalandervorrichtung und Verfahren zum Betrieb einer Bandkalandervorrichtung |
-
2008
- 2008-06-26 DE DE102008002658A patent/DE102008002658A1/de not_active Withdrawn
-
2009
- 2009-06-17 WO PCT/EP2009/057509 patent/WO2009156314A1/de not_active Ceased
- 2009-06-17 EP EP09769163A patent/EP2304105B1/de not_active Not-in-force
- 2009-06-17 AT AT09769163T patent/ATE536440T1/de active
- 2009-06-17 CN CN200980124047.6A patent/CN102066662B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009156314A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2304105B1 (de) | 2011-12-07 |
| DE102008002658A1 (de) | 2009-12-31 |
| CN102066662A (zh) | 2011-05-18 |
| ATE536440T1 (de) | 2011-12-15 |
| CN102066662B (zh) | 2013-02-06 |
| WO2009156314A1 (de) | 2009-12-30 |
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