EP2769813B1 - Procédé de calibrage de la position de lames de découpe d'une bobineuse-trancheuse - Google Patents
Procédé de calibrage de la position de lames de découpe d'une bobineuse-trancheuse Download PDFInfo
- Publication number
- EP2769813B1 EP2769813B1 EP13193794.8A EP13193794A EP2769813B1 EP 2769813 B1 EP2769813 B1 EP 2769813B1 EP 13193794 A EP13193794 A EP 13193794A EP 2769813 B1 EP2769813 B1 EP 2769813B1
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- European Patent Office
- Prior art keywords
- slitter
- slitter blade
- blade
- carriage
- machine direction
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 22
- 238000005259 measurement Methods 0.000 claims description 34
- 239000000835 fiber Substances 0.000 claims description 27
- 238000005520 cutting process Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
- B26D7/2635—Means for adjusting the position of the cutting member for circular cutters
Definitions
- the present invention relates to a slitter-winder of a fiber web production line in general and in particular to a method for calibrating the position of the slitter blades of a slitter-winder.
- a fiber web e.g. paper
- a fiber web is manufactured in machines which together constitute a paper-manufacturing line which can be hundreds of meters long.
- Modern paper machines can produce over 450,000 tons of paper per year.
- the speed of the paper machine can exceed 2,000 m/min and the width of the fiber web can be more than 11 meters.
- a fiber web completing in the paper machine is reeled by a reel-up around a reeling shaft, i.e. a reel spool, into a parent roll the diameter of which can be more than 5 meters and the weight more than 160 tons.
- the purpose of reeling is to modify the fiber web manufactured as planar to a more easily processable form.
- the continuous process of the paper machine breaks for the first time and shifts into periodic operation.
- the web of the parent roll produced in paper manufacture is full-width and even more than 100 km long, so it must be slit into partial webs with suitable width and length for the customers of the paper mill and wound around cores into so-called customer rolls before delivering them from the paper mill.
- This slitting and winding up of the web takes place in an appropriate separate machine, i.e. a slitter-winder.
- the parent roll On the slitter-winder, the parent roll is unwound, and the wide web is slit on the slitting section into several narrower partial webs which are wound up on the winding section around winding cores, such as spools, into customer rolls.
- the slitter-winder is stopped and the wound rolls, i.e. the so-called set, is removed from the machine. Then, the process is continued with the winding of a new set.
- These steps termed a set change, are repeated in sequences periodically until paper runs out of the parent roll, at which point a parent roll change is performed and the operation starts again with the unwinding of a new parent roll.
- a fiber web is slit in the longitudinal direction i.e., in the machine direction, into several component webs between a pair of slitter blades comprising a top slitter blade and a bottom slitter blade.
- the width of the component webs to be slit by the slitter blades and thus the position of the slitter blades can vary to a great extent when different slitter blade settings are used, depending on the set widths of the rolls to be produced.
- the slitter blades have to be positioned, in the lateral direction i.e., the cross machine direction of the web, in the right slitting position corresponding to the desired roll widths.
- the slitter blades of the slitter-winder are spaced apart as desired in the cross machine direction of the paper or board web, that is, a change of settings is carried out.
- US 4 548 105 B1 discloses a method and a system for observing a position.
- This publication describes the use of the method in a system used in the slitting of a paper web.
- a measuring device is used which is in a position arrangement which comprises actuating members for controlling and performing the movement of the measuring device in the cross machine direction of the web and which system comprises at least one limiter for limiting the operation of the measuring device along the distance between the extreme positions such that one extreme position serves as the datum position for the determination.
- An observing device in both directions of movement observes at least one member of the slitting device.
- the system comprises drive means for the actuating members and moving devices performing a corrective movement of a movable device or member.
- the position of the slitter blades are determined when the machine is stopped by means of forgoing arrangement, so as to minimize the duration of the standstill.
- a device that has a magnetic measuring system, in which position detection devices are connected with the carriages of the slitter blades, and a magnetic band which is used to determine position extends over the path of the carriages.
- a slitter blade arrangement in which at least one light-emitting element, i.e., a laser, which emits visible radiation is arranged so as to be adjustable, the light beam of the laser is oriented to a desired position for a cutting blade, the laser producing a mark, that is a spot of light, which corresponds to the position to which the cutting blade is to be directed.
- the laser can be used to produce a fan beam which forms a line in the cutting direction i.e., the machine direction, which marks a selected position for a slitter blade.
- each slitter blade carriage is equipped with a fixed permanent magnet, and the distance between the permanent magnet and the slitter blade is constant, and the position of the permanent magnet is measured by means of a magnetic measuring device, thereby establishing the position of the slitter blade.
- information is also needed in addition to the information on the position of the slitter blade carriage.
- WO 2009/156566 A1 there is disclosed a method for calibrating the position of slitter blades of a slitter-winder in which there is at least one stationary fixed point of the frame of the slitter-winder. An edge of at least one slitter blade is positioned in relation to the position of the slitter blade carriage. Each fixed point is in the cross machine direction of the frame such that each slitter blade being positioned extends to at least one fixed point.
- a sensor measures the position of the edge of the slitter blade with respect to a fixed point.
- the sensor measures the position of the edge of the slitter blade with respect to the fixed point and the distance between the edge and the slitter blade carriage is specified because the position of the slitter blade carriage is continuously known. Based on knowing the distance between the edge and the slitter blade carriage, the slitter blade can be positioned by positioning the carriage.
- the sensor is a distance sensor which measures the position of the slitter blade, preferably the edge, at the moment of calibration.
- the slitter blade can be spaced from the sensor.
- US 4 548 105 A shows a measuring and positioning process for slitter blades by moving a measuring device for determining a position of slitter blades in the transverse direction of a web to be cut when the measuring device moves past a slitting edge of the slitter blades, preferably, the edge of the lower slitter, along said transverse direction. Then, the determined (measured) position is compared to a desired position value with respect to a specific datum position acting as a reference position. In case the determined position differs from said desired position value, a corrective movement of the slitter blades into said (new) desired position is made.
- DE 101 43 508 A1 shows a method for determining and adjusting a cutting gap of a rotating cutting knife by using a non-contact sensor.
- the non-contact sensor measures an actual distance between the knife and a cutting edge and then a cutting gap can be adjusted to a desired set value by moving the knife in a horizontal direction.
- An object of the invention is to provide an easy-to-use and reliably operating method for calibrating the position of the slitter blades of a slitter-winder.
- the object of the present invention is achieved by a method for calibrating the position of slitter blades of a slitter-winder having the features of claim 1.
- the invention provides a method for calibration of positions of slitter blades of a slitter-winder in a fiber web production line in which a laser is used.
- the calibration is performed while the slitter is in standstill and no fiber web is running or being slit between the slitter blades.
- Laser measurement for calibration is provided at the fiber web cutting point of a slitter blade, preferably the top slitter blade of a pair of slitter blades, and the laser measurement calibration is used to calibrate the slitter blade carriage position sensors.
- a laser measures one slitter blade of each slitter blade pair when they are engaged without a web present.
- Slitter blade pairs between the laser and the slitter blade pair being measured are separated to allow the laser beam to reach the furthest pair, and one-by-one the pairs of slitter blades progressively closer to the laser are closed and measured. Simultaneously with measuring each slitter blade pair the carriage positions are read.
- the shape of slitter blades is typically such that the cutting edge is sharpened with one side inclined and the other side straight.
- the laser measurement system is located such that the laser beam is directed to the slitter blade to its straight side thus resulting in further accuracy to the measurement.
- the calibration of positions of slitter blades is typically needed after replacement of a slitter blade(s) or after replacement of a sensor(s) on a carriage(s) or after a power failure or a corresponding disturbance in operation but not in connection with each repositioning of the slitter blades for the selected slitting position corresponding to the desired roll widths.
- the method for calibrating the position of slitter blades of a slitter-winder in a fiber web production line in which slitter blades are moved by slitter blade carriages mounted on cross machine direction guides of the slitter-winder.
- the cross machine direction is defined as perpendicular to the running direction or machine direction of the fiber web. The slitter blades thus are moved to slitting positions for slitting the fiber web into partial webs which extend in the machine or longitudinal direction of the fiber web.
- At least one of the slitter blades of each slitter blade pair is movable upwards and downwards in the carriage in relation to its distance to the other slitter blade of the slitter blade pair for engaging and correspondingly opening each slitter blade pair.
- the positions of the carriages are measured by slitter blade carriage sensors.
- Each slitter blade pair position is measured and calibrated, with a laser sensor which measures and calibrates the positions of one slitter blade of each slitter blade pair. The measurement of said calibration is performed while the slitter-winder is at a standstill and no fiber web is running or being slitted between the slitter blades.
- the measurement and said calibration is provided at the fiber web cutting point of each slitter blade pair used to calibrate the slitter blade carriage position sensors.
- the laser sensor measures the distance to one slitter blade of each slitter blade pair when the pair is engaged, while other slitter blade pairs between the laser sensor and the slitter blade pair are not engaged and so do not block the laser beam from reaching the one slitter blade which is being measured.
- the measurement and the calibration by the laser sensor is provided to measure and calibrate the positions of each slitter blade pair one-by-one.
- the slitter blade carriage positions are defined simultaneously with said measurement and said calibration by the laser sensor.
- the laser beam is directed to the straight side of the slitter blade for increased accuracy of the blade position measurement.
- FIGS. 1-3 show three of the top blades 23 1 , 23 2 , 23 N and bottom 24 1 , 24 2 2, 24 N slitter blade pairs used in slitting.
- Each of the top slitter blades 23 1 , 23 2 , 23 N is attached to a top slitter blade carriage 21 1 , 21 2 , 21 N , correspondingly, which top slitter blade carriages 21 1 , 21 2 , 21 N are arranged to be movable in a cross machine direction as shown by arrows S 21 in relation to the travel direction i.e., the machine direction, of the web along an upper guide 11, and each of the bottom slitter blades 24 1 , 24 2 2, 24 N are attached to a bottom slitter blade carriage 22 1 , 22 2 , 22 N , correspondingly, which bottom slitter blade carriages 22 1 , 22 2 , 22 N are arranged to be movable in the cross machine direction as shown by arrows S 22 in relation to the travel direction of the web along a lower guide 12.
- Actuators (not shown) are connected to the top and bottom slitter blade carriages for providing the movement of the carriages to the desired positions for s
- each top and bottom slitter blade carriage 21 1 , 21 2 , 21 N ; 22 1 , 22 2 , 22 N is equipped with a position indicator, for example a position magnet 15 1 , 15 2 , 15 N ; 16 1 , 16 2 , 16 1N , and a position sensor, for example a magnetostrictive position sensor 13, 14, is arranged below each guide 11, 12, respectively, by means of which sensor 13, 14 the position of the respective position magnet 15 1 , 15 2 , 15 N ; 16 1 , 16 2 , 16 N is measured.
- the principles of such an arrangement are known from US 7 086 173 B1 .
- the sensors can also be some other sensors suitable for measuring a distance, such as inductive or pulse sensors. Also laser measurement can be applied.
- Laser measurement for calibration is provided at the cut point of a top slitter blade, 23 1 , 23 2 , 23 N of a slitter blade pair, and the laser measurement calibration is used to calibrate the slitter blade carriage position sensors comprising the magnetostrictive position sensors 13, 14; and magnets15, 15 2 , 15 N ; 16 1 , 16 2 , 16 N .
- the laser 30 with the beam 31 strikes one slitter blade 23 1 , 23 2 , 23 N ; of each slitter blade pair while the slitter blade pairs that are located between the slitter blade pair being measured and the laser sensor 30 are not engaged so that the laser beam 31 senses the engaged slitter blade 23 1 .
- the positions of the slitter blades 23 1 , 23 2 , 23 N are measured one-by-one and the corresponding carriage positions are read simultaneously.
- the laser sensor 30 is located such that a substantially straight side of the slitter blades 23 1 , 23 2 , 23 N will be sensed by the laser beam 31.
- the shape of slitter blades is as shown in the figures and is typically such that the cutting edge is sharpened such that one side is inclined and the other side is straight and as mentioned the laser measurement system is located such that the laser beam 31 is directed to the straight side of the slitter blades 23 1 , 23 2 , 23 N thus resulting in further accuracy to the measurement.
- top and bottom slitter blade pairs 23 2 , 23 N ; 24 2 , 24 N are unengaged and the top slitter blade 23 1 farthest from the laser 30 is calibrated by a laser measurement system including the laser 30 and the laser beam 31 which together comprise the laser sensor which sends the laser beam 31 that measures the position of the farthest top slitter blade 23, while it is positioned engaged with the corresponding bottom slitter blade 24 1 in a slitting position, i.e. contacting the bottom slitter blade.
- the next farthest top slitter blade 23 2 is moved downwards as shown by arrow S 23 to a closed position for calibrating the second top slitter blade 23 2 , which engages to the corresponding bottom slitter blade 24 2 , as shown in FIG. 2 and after the measurement of the top slitter blade 23 2 the next top slitter blade (not shown) is measured and calibrated and correspondingly each top slitter blade is measured and calibrated until finally the last top slitter blade 23 N ,which is closest to the laser beam is engaged with the corresponding bottom slitter blade 24 N and is measured and calibrated as shown in FIG. 3 .
- the stages of calibrating measurement by the laser measurement system comprising a laser 30 and the beam 31 it generates, can also be performed in reverse order, beginning from the closest top slitter blade 23 N engaged with the corresponding bottom slitter blade 24 N as shown in FIG. 3 which is then opened out of engagement so the next slitter blade pair (not shown) can be measured and calibrated as to its position and which is in turn opened out of engagement so the next slitter blade pair can be measured and calibrated and so on until finally the last top slitter blade 23 1 in engagement with the corresponding bottom slitter blade 24, is measured and calibrated as shown in FIG. 1 .
- each top slitter blade is calibrated one-by-one by the laser measurement system 30, 31 and simultaneously the corresponding top and bottom slitter blade carriage 21 1 , 21 2 , 21 N ; 22 1 , 22 2 , 22 N positions are measured by the position sensor system 13; 14, 15 1 , 15 2 , 15 N ; 16 1 , 16 2 , 16 N for providing accurate information to a control system (not shown) which controls the movement of the slitter of the carriages, if needed.
- the blade carriages 21 1 , 21 2 , 21 N ; 22 1 , 22 2 , 22 N are positioned for slitting the fiber web into the next set of partial webs with desired widths for the next set of customer rolls (partial web rolls).
- the calibration of the positions of the slitter blades is typically needed after replacement of a slitter blade(s) or after replacement of a sensor(s) of a carriage(s) or after a power failure or a corresponding disturbance in operation. Such calibration of the positions of the slitter blades is not needed with each routine positioning of the slitter blades to the slitting position corresponding to the desired roll widths.
- the positions of the slitter blades of a slitter-winder are calibrated using a laser to perform measurement and calibration of the fiber web cutting point of each slitter blade pair. Measurement and calibration is preformed on the top slitter blade of each of a multiplicity of slitter blade pairs one after another.
- the laser measures one slitter blade of each slitter blade pair while they are engaged.
- the slitter blade pairs between the laser and the slitter blade pair being measured are not engaged.
- Carriages which support the slitter blades have position sensors which the laser measurements calibrate and the blade pair positions are measured and the carriage positions are read simultaneously.
- the cutting edges of the slitter blades are sharpened to have straight sides and the laser measurement system is located so the laser beam is directed to the straight side.
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Claims (8)
- Procédé pour calibrer la position de lames de découpe (23, 24) d'une trancheuse-bobineuse dans une chaîne de production de bandes fibreuses, dans lequel le déplacement de la bande fibreuse à travers la trancheuse-bobineuse définit un sens machine, et un sens travers est défini perpendiculairement au sens machine,
dans lequel la trancheuse-bobineuse a une pluralité de paires de lames de découpe (23, 24) regroupées dans le sens travers et au moins une lame de découpe (23 ; 24) de chaque paire de lames de découpe (23, 24) est montée sur un chariot (21 ; 22) pour le déplacement ascendant et descendant par rapport au chariot (21 ; 22) afin de modifier une distance par rapport à une seconde lame de découpe (24 ; 23) de la paire de lames de découpe (23, 24) afin de mettre en prise et ouvrir de manière correspondante chaque paire de lames de découpe (23, 24), et dans lequel le chariot (21 ; 22) est monté pour le déplacement dans le sens travers sur un guide (11 ; 12) de la trancheuse-bobineuse dans les positions de découpe pour découper la bande fibreuse en bandes partielles dans le sens machine de la bande fibreuse, le procédé étant caractérisé par les étapes consistant à :mesurer dans chaque paire de lames de découpe (23, 24) avec un laser (30) ayant un faisceau (31) s'étendant dans le sens travers, une position dans le sens travers d'une première lame de découpe (23) mise en prise avec une seconde lame de découpe (24) formant chaque paire de la pluralité de paires de lames de découpe (23, 24), dans lequel la première lame de découpe (23) est montée sur un premier chariot (21) mobile dans le sens travers sur un premier guide (11) dans la trancheuse-bobineuse, et dans lequel la seconde lame de découpe (24) est montée sur un second chariot (22) mobile dans le sens travers sur un second guide (12) dans la trancheuse-bobineuse, dans lequel la mesure dans chaque paire de lames de découpe (23, 24) est réalisée alors que la trancheuse-bobineuse est à l'arrêt et qu'aucune bande fibreuse ne circule, et dans lequel les paires de lames de découpe (23, 24) entre le laser (30) et la paire de lames de découpe (23, 24) qui sont mesurées, sont ouvertes pour ne pas empêcher le faisceau laser (31) d'atteindre la paire de lames de découpe (23, 24) qui sont mesurées ;mesurer une position de chaque premier chariot (21) dans le sens travers avec un premier capteur de position de chariot (13) ;comparer la position dans le sens travers de chaque premier lame de découpe (23) avec la position de chaque premier chariot (21) dans le sens travers, telle que mesurée avec le premier capteur de position de chariot (13) ; etcalibrer chaque premier capteur de position de chariot (13), de sorte que chaque première lame de découpe (23) peut être positionnée en fonction de chaque premier capteur de position de chariot (13). - Procédé selon la revendication 1, dans lequel lesdites étapes de mesure, ladite étape de comparaison et ladite étape de calibrage sont réalisées par rapport à chaque paire de lames de découpe (23, 24), une à une.
- Procédé selon la revendication 1, dans lequel pour chaque paire de lames de découpe (23, 24), la première position de chariot de lame de découpe est mesurée avec le laser simultanément avec la mesure de la position dans le sens travers de la première lame de découpe (23) de ladite paire de lames de découpe (23, 24).
- Procédé selon la revendication 3, dans lequel la comparaison de la position dans le sens travers de la première lame de découpe (23) avec la position du premier chariot de lame de découpe (21) est réalisée simultanément avec la première mesure de position de chariot et la mesure de la position dans le sens travers de chaque première lame de découpe (23) ; et
dans lequel le calibrage de chaque premier capteur de position de chariot (13) est réalisé simultanément avec la première mesure de position de chariot et la mesure de la position dans le sens travers de chaque première lame de découpe (23). - Procédé selon la revendication 1, dans lequel chaque première lame de découpe (23) a un côté droit et le faisceau laser (31) est dirigé vers chaque côté droit de chaque première lame de découpe (23).
- Procédé selon la revendication 1, dans lequel les étapes consistant à mesurer dans chaque paire de lames de découpe (23, 24) avec le laser (30), la position dans le sens travers de la première lame de découpe (23) ; mesurer la position de chaque premier chariot (21) ; comparer la position dans le sens travers de chaque première lame de découpe (23) avec la position de chaque premier chariot (21) ; et calibrer chaque premier capteur de position de chariot (13), sont réalisées après le remplacement d'au moins l'une des lames de découpe (23, 24) ou après le remplacement d'au moins un capteur de distance, ou après une défaillance ou un dysfonctionnement correspondant dans le fonctionnement de la trancheuse-bobineuse.
- Procédé selon la revendication 1, dans lequel le faisceau laser (31) est dirigé vers un point de coupe de bande fibreuse de chaque première lame de découpe (23).
- Procédé selon la revendication 1, dans lequel dans chaque paire de lames de découpe (23, 24), chaque première lame de découpe (23) est positionnée au-dessus de la seconde lame de découpe (24).
Applications Claiming Priority (1)
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US201313774832A | 2013-02-22 | 2013-02-22 |
Publications (3)
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EP2769813A2 EP2769813A2 (fr) | 2014-08-27 |
EP2769813A3 EP2769813A3 (fr) | 2014-11-19 |
EP2769813B1 true EP2769813B1 (fr) | 2016-06-01 |
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EP13193794.8A Active EP2769813B1 (fr) | 2013-02-22 | 2013-11-21 | Procédé de calibrage de la position de lames de découpe d'une bobineuse-trancheuse |
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CN107379069B (zh) * | 2017-08-16 | 2022-11-04 | 吕明芳 | 复合卷材自动同步往复切断机 |
CN108162043A (zh) * | 2017-12-27 | 2018-06-15 | 宁波沸柴机器人科技有限公司 | 一种自动裁切工具 |
KR101893901B1 (ko) * | 2018-06-01 | 2018-08-31 | 주식회사 에이엘텍 | 알루미늄 박 검품 및 절단 장치와 이의 제어 방법 |
EP3744476B1 (fr) * | 2019-05-27 | 2023-10-11 | Summa | Système et procédé d'étalonnage de traceurs de découpage |
CN112643740A (zh) * | 2020-12-03 | 2021-04-13 | 浙江百联无纺科技有限责任公司 | 一种无纺布生产用分切机构 |
CN117681280B (zh) * | 2024-02-02 | 2024-04-09 | 江苏兴广包装科技有限公司 | 一种高效率分条机及其工作方法 |
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FI68185C (fi) | 1983-03-01 | 1985-08-12 | Waertsilae Oy Ab | Foerfarande och anordning foer laegesobservering |
DE3445254A1 (de) * | 1984-12-12 | 1986-06-12 | Jagenberg AG, 4000 Düsseldorf | Verstelleinrichtung fuer nebeneinander angeordnete und auf gegenseitigen abstand verfahrbare bearbeitungseinheiten |
DE10143508A1 (de) * | 2001-09-05 | 2003-03-20 | Biforce Anstalt Vaduz | Verfahren zur Schneidspalteinstellung |
FI115615B (fi) | 2002-08-08 | 2005-06-15 | Metso Paper Inc | Menetelmä ja laite paperi- tai kartonkikoneen pituusleikkurin terien aseman kalibroimiseksi |
ATE354459T1 (de) | 2004-10-18 | 2007-03-15 | Jurmet Sp Z O O | Schneidemesseranordnung an einer konfektionierungsmachine für papier- und folienbahnen mit lichtemittierendes element zur erzeugung von markierungen, die die gewünschte messerposition zeigen |
DE102007000685A1 (de) | 2007-08-31 | 2009-03-05 | Voith Patent Gmbh | Rollenschneidmaschine, insbesondere Längsschneidemaschine |
DE102007047890A1 (de) | 2007-11-29 | 2009-06-04 | Voith Patent Gmbh | Positioniereinrichtung und Verwendung einer Positioniereinrichtung |
FI20085640A0 (fi) | 2008-06-26 | 2008-06-26 | Metso Paper Inc | Menetelmä ja laite kuiturainakoneen pituusleikkurien terien aseman kalibroimiseksi |
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2013
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EP2769813A3 (fr) | 2014-11-19 |
EP2769813A2 (fr) | 2014-08-27 |
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