WO2004014619A1 - Method and device for calibrating the position of blades of a slitter-winder of a paper or board machine - Google Patents

Method and device for calibrating the position of blades of a slitter-winder of a paper or board machine Download PDF

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Publication number
WO2004014619A1
WO2004014619A1 PCT/FI2003/000594 FI0300594W WO2004014619A1 WO 2004014619 A1 WO2004014619 A1 WO 2004014619A1 FI 0300594 W FI0300594 W FI 0300594W WO 2004014619 A1 WO2004014619 A1 WO 2004014619A1
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WO
WIPO (PCT)
Prior art keywords
blade
calibration tool
blades
slitter
winder
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.)
Ceased
Application number
PCT/FI2003/000594
Other languages
French (fr)
Inventor
Jukka Alatalo
Asko Heikola
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.)
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
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 Metso Paper Oy filed Critical Metso Paper Oy
Priority to DE10393022T priority Critical patent/DE10393022T5/en
Priority to AU2003249131A priority patent/AU2003249131A1/en
Priority to CA002494006A priority patent/CA2494006C/en
Priority to US10/523,758 priority patent/US7086173B1/en
Publication of WO2004014619A1 publication Critical patent/WO2004014619A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6587—Including plural, laterally spaced tools
    • Y10T83/6588—Tools mounted on common tool support
    • Y10T83/659—Tools axially shiftable on support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/7822—Tool pair axially shiftable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/7822—Tool pair axially shiftable
    • Y10T83/7826—With shifting mechanism for at least one element of tool pair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/7847—Tool element axially shiftable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7872—Tool element mounted for adjustment

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • the invention also relates to a device according to the preamble of claim 7.
  • a web is cut in the cross- direction into several component webs, and a pair of blades comprising a top blade and a bottom blade is used in the cutting.
  • the width of the component webs to be slit by the blades and thus the position of the slitting blades can vary to a great extent when different blade settings are used, depending on the set widths of the rolls to be produced.
  • the slitting blades have to be positioned, in the lateral direction of the web, in the right slitting position corresponding to the desired roll widths.
  • the slitting blades of the slitter-winder are spaced apart as desired in the lateral direction of the paper or board web i.e. a change of settings is carried out.
  • FI patent 68185 discloses a method and a system for position change.
  • This publication describes the use of the method in a system used in the slitting of a paper web, in which system, to observe the position of the slitting device, 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- direction of the web and which system comprises at least one limiter i.e. 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 de- termination.
  • An observing device in both directions of movement observes at least one member of the slitting device.
  • the system comprises drive means for the ac- tuating members and moving devices performing a corrective movement of a movable device or member.
  • the position of the slitting blades has been determined during a standstill of the machine by means of this known arrangement, having the aim of minimizing the duration of the standstill.
  • each blade carriage is equipped with a fixed permanent magnet,, and the distance between the permanent magnet and the slitting blade is constant, and the position of the permanent mag- net connected to the blade carriage is measured by means of a magnetic measuring device, thereby establishing the position of the blade, hi connection with the changing of blade settings, information is also needed, in addition to the information on the position of the sharpening blades, on the new, replacing blades and, after the detachment and grinding of the blades, position information, since, after these steps, the distance between the slitting blade edge and the magnet of the blade carriage changes, which means that no exact information on the position of the blade is available based on the results from the measurement methods described above.
  • the slitting blade edge wears, which leads to inaccuracy when using the above-mentioned measurement methods.
  • tuning runs in order to determine the position of the slitting blade edge.
  • An object of the invention is to provide a solution for eliminating or at least minimizing the disadvantages described above.
  • An object of the invention is to provide an easy-to-use and reliably operating method and device for calibrating the position of the blades of a slitter- winder.
  • the device according to the invention is in turn characterized in what is presented in the characterizing part of claim 7.
  • the invention is based on a magnetostrictive sensor known as such, which sends out magnetic pulses on the basis of whose returning time the position of the blade is determined.
  • Each top and bottom blade used in slitting comprises a permanent magnet on the basis of which information is continuously received on the position of the blades.
  • At least one of the measurement points of the sensor is used, and magnetostrictive measurement is most appropriately used as the measurement method, some other equivalent multipoint measurement method also be- ing suitable in this connection.
  • a measuring device i.e. a calibration tool is used, which is placed by the blade so that the positioning member of the calibration tool touches the slitting edge.
  • the calibration tool is located on a guide and the position of the slitting edge is determined based on the measurement results of the magnet pairs or equivalent measuring members.
  • the device according to the invention is used on a slitter- winder when the blade is calibrated, e.g. when the bottom blade is worn or when changing the top blade, whereby information on the position of the slitting blade edge is received immediately, e.g. after a blade change, without separate tuning runs or the like.
  • the device according to the invention comprises, according to one of its advanta- geous applications, a manually operated measuring device equipped with a permanent magnet and its use in connection with a magnetostrictive sensor in the offset calibration of a slitting blade edge.
  • the measuring device can also be positioned using other ways of measurement, e.g. based on optic procedure. Different types of data transfer procedures and wire and wireless, preferably digital, data transfer can be used in connection with the invention.
  • a manually operated measuring device is pressed against a blade guide and moved sideways to be in contact with the blade to be measured. Attachment to the guides allows the posi- tion of the magnet of the measuring device with respect to the sensor to be established, and it ensures that the direction of measurement is right. After this, the position of the magnet of the measuring device is read by means of a magnetostrictive sensor and the distance between the slitting blade edge and the fixed magnet of the blade carriage is calculated by software. According to the invention the calibrated blade positions can be brought accurately to the target i.e. to the desired slitting point without separate control measurements and movements or tuning runs and, in addition, the exact position of the blade is known at all times on the basis of feedback data.
  • the calibration can be automated, for example, so that when the measuring device finds a magnet, it performs the calibration, e.g., after the expiration of ten seconds, or, for example, a control button or an equivalent arrangement is used for performing the measurement.
  • the calibration according to the invention can be carried out easily without slide gauges or other equivalent precision tools.
  • a further advantage of the invention is that, most appropriately, the calibration measurement procedure makes use of the same measurement method that is used in any case in determining the position of the blades.
  • auxiliary devices or other accessories are needed in the invention and it is suited to be used for both the top and the bottom blades and for left- and right-handed blades.
  • the device according to the invention is easy to use, thus reducing the chance of human mistakes, and the calibration arrangement according to the invention is easy to put into practise and does not require any special know-how.
  • a further advantage obtained by means of the invention is that, if the blade car- riage is in an oblique position, which as such does not affect the mechanical operation of the slitting blade, this defect - irrectifiable as such only by improvement of measurement precision in other procedures - is also eliminated. Since the calibration tool according to the invention performs the measurement from the slitting point, better quality in the width of the component webs to be slit and thus in the delivery tolerance of the rolls can be obtained.
  • Figure 1 shows an application of the invention as a schematic example.
  • Figure 2A shows a schematic block diagram representation of a prior art blade change sequence.
  • FIG. 2B shows a schematic block diagram representation of an application of the method according to the invention.
  • the Figure shows one of the top and bottom blade pairs used in slitting.
  • the bottom blade has the reference number 11 and the top blade has the reference number 12.
  • the top blade 12 is attached to a blade carriage 12A, which is arranged to be movable along an upper guide 13, and the bottom blade 11 is attached to a blade carriage 11 A, which is arranged to be movable along a lower guide 14.
  • Each blade carriage 11 A, 12A is equipped with a position magnet 18, 19.
  • a magnetostrictive position sensor 15, 16 is arranged below each guide 13, 14, respectively, by means of which sensor the position of the respective position magnet 19, 18 is measured.
  • the calibration tool 20 is, in this example, disposed on the lower guide 14 and the control edge 21 of the calibration tool 20 is arranged so that it touches a slitting edge 17 of the bottom blade 11.
  • a position magnet attached in connection with the calibration tool 20 has the reference number 23 and the magnet marking the position of the bottom blade 11 has the refer- ence number 18, which means that the off-set distance L between the position magnet 23 of the calibration tool 20 and the position magnet 18 of the bottom blade 11 can be determined by means of magnetostrictive measurement.
  • the calibration tool 20 When the calibration tool 20 is attached to the blade guide 14 and moved sideways to be in contact with the slitting edge 17 of the ground bottom blade 11, it is achieved, on the basis of measurement results, by reading the position of the magnet 23 of the calibration tool by means of the magnetostrictive sensor 16 and by computing by software the distance between the slitting blade edge and the permanent magnet 18 of the bottom blade 11, whereby the position of the slitting blade edge 17 can be determined precisely.
  • FIG. 2A shows a prior art blade change sequence, according to which, after a blade change, block 31, manual positioning of a bottom and a top blade, block 32, has been carried out, whereafter, according to block 33, generally three control measurements of the blades have been performed by means of a measurement carriage. After this, the blades have been moved to their positions, as shown in block 34, and a control measurement of the blades has been carried out by means of the measurement carriage, block 35, whereafter, in the last stage, the blades are in their positions according to the setting, block 36. As illustrated by this series of pictures the blade change sequence has consisted of several different stages.
  • Figure 2B shows a blade change sequence when using the method and device according to the invention in calibrating the position of the blades, whereby, after a blade change, block 41, the blade is calibrated according to the invention, block 42, whereafter the blades have been moved to their positions, block 43. After this, the blades are in their positions according to the setting, block 44.
  • Figures 2A and 2B thus demonstrate that, by means of the calibration according to the invention, many stages can be omitted in connection with the measurements and positionings carried out in connection with blade change.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

The invention relates to a method for calibrating the position of blades of a slitter-winder of a paper or board machine, which blades (11,12) are attached to blade carriages (11A,12A) or the like disposed on guides (14,13) or the like, in which method the position of the blades (11,12) of the slitter-winder is measured by means of a multipoint measurement method, whereby the position of the blade carriage (11A,12A) of the respective blade (11,12) is measured. In the method the position of the blades (11,12) is calibrated with a calibration tool (20). A positioning member (21) of the calibration tool (20) is arranged to touch a slitting edge (17) of the blade (11) to be calibrated. The position of the calibration tool (20) is measured by means of the multipoint measurement method and the position of the slitting edge (17) of the blade (11) is determined based on the measurement result of the position of the calibration tool (20). The invention also relates to a device for calibrating the position of blades of a slitter-winder of a paper or board machine, which device is disposed in connection with the slitter-winder of the paper or board machine, which slitter-winder comprises pairs of blades comprising a top blade (12) and a bottom blade (11), attached to their respective blade carriages (1IA,12A) arranged to be movable along a guide (14,13) or the like, in connection of which slitter-winder means (15,16,18,19) are arranged for measuring the position of the blades (11, 12). In the method the device used for calibrating the position of the blades (11,12) is a calibration tool (20) which is arranged to be attached to the same guide (14) with the blade (11) to be calibrated. The calibration tool (20) comprises a means (21) for indicating the slitting edge (17) of the blade (11) and means (23,16) for measuring the position of the calibration tool (20).

Description

Method and device for calibrating the position of blades of a slitter-winder of a paper or board machine
The invention relates to a method according to the preamble of claim 1.
The invention also relates to a device according to the preamble of claim 7.
In the slitter- winders of paper and board machines a web is cut in the cross- direction into several component webs, and a pair of blades comprising a top blade and a bottom blade is used in the cutting. The width of the component webs to be slit by the blades and thus the position of the slitting blades can vary to a great extent when different blade settings are used, depending on the set widths of the rolls to be produced. The slitting blades have to be positioned, in the lateral direction of the web, in the right slitting position corresponding to the desired roll widths. In order to produce component webs of the desired width the slitting blades of the slitter-winder are spaced apart as desired in the lateral direction of the paper or board web i.e. a change of settings is carried out.
As to prior art related to the invention reference is made to FI patent 68185, which discloses a method and a system for position change. This publication describes the use of the method in a system used in the slitting of a paper web, in which system, to observe the position of the slitting device, 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- direction of the web and which system comprises at least one limiter i.e. 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 de- termination. An observing device in both directions of movement observes at least one member of the slitting device. The system comprises drive means for the ac- tuating members and moving devices performing a corrective movement of a movable device or member. The position of the slitting blades has been determined during a standstill of the machine by means of this known arrangement, having the aim of minimizing the duration of the standstill.
It is known from prior art to measure the position of the blades used in slitting by means of a carriage-type arrangement, in which a sensor is placed in a moving carriage with which, by means of optic or magnetic measurement, the position of the blades has been established. These measurement methods are used in connec- tion with the changing of settings.
In a prior art application based on magnetic measurement each blade carriage is equipped with a fixed permanent magnet,, and the distance between the permanent magnet and the slitting blade is constant, and the position of the permanent mag- net connected to the blade carriage is measured by means of a magnetic measuring device, thereby establishing the position of the blade, hi connection with the changing of blade settings, information is also needed, in addition to the information on the position of the sharpening blades, on the new, replacing blades and, after the detachment and grinding of the blades, position information, since, after these steps, the distance between the slitting blade edge and the magnet of the blade carriage changes, which means that no exact information on the position of the blade is available based on the results from the measurement methods described above. Also, the slitting blade edge wears, which leads to inaccuracy when using the above-mentioned measurement methods. In the above-described situations, when prior art applications have been used, there has been a need to carry out so-called tuning runs in order to determine the position of the slitting blade edge.
It is an object of the invention to provide a solution for eliminating or at least minimizing the disadvantages described above. An object of the invention is to provide an easy-to-use and reliably operating method and device for calibrating the position of the blades of a slitter- winder.
To achieve the afore-mentioned objects and those that come out later the method according to the invention is mainly characterized in what is presented in the characterizing part of claim 1.
The device according to the invention is in turn characterized in what is presented in the characterizing part of claim 7.
The invention is based on a magnetostrictive sensor known as such, which sends out magnetic pulses on the basis of whose returning time the position of the blade is determined. Each top and bottom blade used in slitting comprises a permanent magnet on the basis of which information is continuously received on the position of the blades.
According to the invention at least one of the measurement points of the sensor is used, and magnetostrictive measurement is most appropriately used as the measurement method, some other equivalent multipoint measurement method also be- ing suitable in this connection.
According to the invention, when the position of the blade carriage changes in relation to the position of the slitting edge, a measuring device i.e. a calibration tool is used, which is placed by the blade so that the positioning member of the calibration tool touches the slitting edge. The calibration tool is located on a guide and the position of the slitting edge is determined based on the measurement results of the magnet pairs or equivalent measuring members. When the blade concerned is known, it is possible to calculate, based on the distances, the exact position for the slitting edge. The device according to the invention is used on a slitter- winder when the blade is calibrated, e.g. when the bottom blade is worn or when changing the top blade, whereby information on the position of the slitting blade edge is received immediately, e.g. after a blade change, without separate tuning runs or the like.
The device according to the invention comprises, according to one of its advanta- geous applications, a manually operated measuring device equipped with a permanent magnet and its use in connection with a magnetostrictive sensor in the offset calibration of a slitting blade edge. According to the invention the measuring device can also be positioned using other ways of measurement, e.g. based on optic procedure. Different types of data transfer procedures and wire and wireless, preferably digital, data transfer can be used in connection with the invention.
According to an advantageous application of the invention a manually operated measuring device is pressed against a blade guide and moved sideways to be in contact with the blade to be measured. Attachment to the guides allows the posi- tion of the magnet of the measuring device with respect to the sensor to be established, and it ensures that the direction of measurement is right. After this, the position of the magnet of the measuring device is read by means of a magnetostrictive sensor and the distance between the slitting blade edge and the fixed magnet of the blade carriage is calculated by software. According to the invention the calibrated blade positions can be brought accurately to the target i.e. to the desired slitting point without separate control measurements and movements or tuning runs and, in addition, the exact position of the blade is known at all times on the basis of feedback data.
According to a further advantageous feature of the invention the calibration can be automated, for example, so that when the measuring device finds a magnet, it performs the calibration, e.g., after the expiration of ten seconds, or, for example, a control button or an equivalent arrangement is used for performing the measurement. The calibration according to the invention can be carried out easily without slide gauges or other equivalent precision tools. A further advantage of the invention is that, most appropriately, the calibration measurement procedure makes use of the same measurement method that is used in any case in determining the position of the blades.
In addition to the actual calibration tool no separate auxiliary devices or other accessories are needed in the invention and it is suited to be used for both the top and the bottom blades and for left- and right-handed blades. The device according to the invention is easy to use, thus reducing the chance of human mistakes, and the calibration arrangement according to the invention is easy to put into practise and does not require any special know-how.
A further advantage obtained by means of the invention is that, if the blade car- riage is in an oblique position, which as such does not affect the mechanical operation of the slitting blade, this defect - irrectifiable as such only by improvement of measurement precision in other procedures - is also eliminated. Since the calibration tool according to the invention performs the measurement from the slitting point, better quality in the width of the component webs to be slit and thus in the delivery tolerance of the rolls can be obtained.
In the following, the invention will be described in greater detail with reference to the figures of the accompanying drawing.
Figure 1 shows an application of the invention as a schematic example.
Figure 2A shows a schematic block diagram representation of a prior art blade change sequence.
Figure 2B shows a schematic block diagram representation of an application of the method according to the invention. The Figure shows one of the top and bottom blade pairs used in slitting. The bottom blade has the reference number 11 and the top blade has the reference number 12. The top blade 12 is attached to a blade carriage 12A, which is arranged to be movable along an upper guide 13, and the bottom blade 11 is attached to a blade carriage 11 A, which is arranged to be movable along a lower guide 14. Each blade carriage 11 A, 12A is equipped with a position magnet 18, 19. A magnetostrictive position sensor 15, 16 is arranged below each guide 13, 14, respectively, by means of which sensor the position of the respective position magnet 19, 18 is measured. The calibration tool 20 according to the invention is, in this example, disposed on the lower guide 14 and the control edge 21 of the calibration tool 20 is arranged so that it touches a slitting edge 17 of the bottom blade 11. A position magnet attached in connection with the calibration tool 20 has the reference number 23 and the magnet marking the position of the bottom blade 11 has the refer- ence number 18, which means that the off-set distance L between the position magnet 23 of the calibration tool 20 and the position magnet 18 of the bottom blade 11 can be determined by means of magnetostrictive measurement. When the calibration tool 20 is attached to the blade guide 14 and moved sideways to be in contact with the slitting edge 17 of the ground bottom blade 11, it is achieved, on the basis of measurement results, by reading the position of the magnet 23 of the calibration tool by means of the magnetostrictive sensor 16 and by computing by software the distance between the slitting blade edge and the permanent magnet 18 of the bottom blade 11, whereby the position of the slitting blade edge 17 can be determined precisely.
Figure 2A shows a prior art blade change sequence, according to which, after a blade change, block 31, manual positioning of a bottom and a top blade, block 32, has been carried out, whereafter, according to block 33, generally three control measurements of the blades have been performed by means of a measurement carriage. After this, the blades have been moved to their positions, as shown in block 34, and a control measurement of the blades has been carried out by means of the measurement carriage, block 35, whereafter, in the last stage, the blades are in their positions according to the setting, block 36. As illustrated by this series of pictures the blade change sequence has consisted of several different stages.
Figure 2B shows a blade change sequence when using the method and device according to the invention in calibrating the position of the blades, whereby, after a blade change, block 41, the blade is calibrated according to the invention, block 42, whereafter the blades have been moved to their positions, block 43. After this, the blades are in their positions according to the setting, block 44. Figures 2A and 2B thus demonstrate that, by means of the calibration according to the invention, many stages can be omitted in connection with the measurements and positionings carried out in connection with blade change.
hi the foregoing the invention has been described with reference only to some of its advantageous exemplifying embodiments, to the details of which the invention is, however, by no means intended to be narrowly confined.

Claims

Claims
1. A method for calibrating the position of blades of a slitter- winder of a paper or board machine, which blades (11,12) are attached to blade carriages (11A,12A) or the like disposed on guides (14,13) or the like, in which method the position of the blades (11,12) of the slitter- winder is measured by means of a multipoint measurement method, whereby the position of the blade carriage (11A,12A) of the respective blade (11,12) is measured, characterized in that in the method, the position of the blades (11,12) is calibrated with a calibration tool (20), that a position- ing member (21) of the calibration tool (20) is arranged to touch a slitting edge
(17) of the blade (11) to be calibrated, that the position of the calibration tool (20) is measured by means of the multipoint measurement method and that the position of the slitting edge (17) of the blade (11) is determined based on the measurement result of the position of the calibration tool (20).
2. A method according to claim 1, characterized in that in measuring the position of the blade carriage (11A,12A) and the position of the calibration tool (20) the same multipoint measurement method is used.
3. A method according to claim 1 or 2, characterized in that the position of the blade carriage (11A,12A) or the like is determined by measuring, by means of a sensor (16,15) or the like, the position of a measuring member (18,19) attached to the blade carriage (11A,12A) and that the position of the calibration tool (20) is determined by measuring, by means of said sensor or the like, the position of a measuring member (23) attached to the calibration tool (20), whereby, on the basis of measurement results, the position of the slitting blade edge is determined.
4. A method according to any one of claims 1-3, characterized in that in the method a magnetostrictive measurement method is used, that the positions of a posi- tion magnet (18) attached to the blade carriage (HA) and of a position magnet
(23) attached to the calibration tool (20) are determined by means of a magne- tostrictive sensor (16), the calibration tool (20) being arranged to touch the slitting edge (17) of the blade (11), whereby, on the basis of measurement results, the exact position of the slitting blade edge can be determined.
5. A method according to any one of claims 1-4, characterized in that in the method, when calibration is carried out, the sensor (16) measuring the position of the calibration tool (20) automatically performs a measurement when it finds the measuring member (2) of the calibration tool (20).
6. A method according to any one of claims 1-4, characterized in that in the method, when the calibration tool (20) is arranged in its position, the measurement is initiated by pressing a control button or the like.
7. A device for calibrating the position of blades of a slitter-winder of a paper or board machine, which device is disposed in comiection with the slitter- winder of the paper or board machine, which slitter-winder comprises pairs of blades comprising a top blade (12) and a bottom blade (11), attached to their respective blade carriages (11 A, 12 A) arranged to be movable along a guide (14,13) or the like, in connection of which slitter-winder means (15,16,18,19) are arranged for measur- ing the position of the blades (11,12), characterized in that in the method the device used for calibrating the position of the blades (11,12) is a calibration tool (20) which is arranged to be attached to the same guide (14) with the blade (11) to be calibrated, that the calibration tool (20) comprises a means (21) for indicating the slitting edge (17) of the blade (11) and means (23,16) for measuring the posi- tion of the calibration tool (20) .
8. A device according to claim 7, characterized in that a measuring member (19,18) is attached to the blade carriage (11A,12A), the position of which measuring member can be determined by means of a sensor (15,16) arranged in connec- tion with the slitter-winder and that the calibration tool comprises a positioning member (21) for indicating the position of the slitting edge (17) of the blade (11) and a measuring member (23) for measuring the position of the calibration tool (20) by means of the sensor (16) or the like.
9. A device according to claim 7 or 8, characterized in that the sensor (15,16) is a magnetostrictive sensor, and position magnets are attached to the blade carriage
(11 A,12A) and to the calibration tool (20).
10. A device according to any one of claims 7-9, characterized in that the calibration tool (20) is arranged to be movable along the guide (14,15) or the like, along which the blade carriage (11A,12A) of the blade (11,12) to be calibrated is arranged to be movable.
PCT/FI2003/000594 2002-08-08 2003-08-07 Method and device for calibrating the position of blades of a slitter-winder of a paper or board machine Ceased WO2004014619A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE10393022T DE10393022T5 (en) 2002-08-08 2003-08-07 Method and apparatus for calibrating the position of blades of a slitter from a paper or board machine
AU2003249131A AU2003249131A1 (en) 2002-08-08 2003-08-07 Method and device for calibrating the position of blades of a slitter-winder of a paper or board machine
CA002494006A CA2494006C (en) 2002-08-08 2003-08-07 Method and device for calibrating the position of blades of a slitter-winder of a paper or board machine
US10/523,758 US7086173B1 (en) 2002-08-08 2003-08-07 Method and device for calibrating the position of blades of a slitter-winder of a paper or board machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20021454 2002-08-08
FI20021454A FI115615B (en) 2002-08-08 2002-08-08 Method and apparatus for calibrating the position of the bite in the roller cutting machine of a paper or cardboard machine

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WO2004014619A1 true WO2004014619A1 (en) 2004-02-19

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US (1) US7086173B1 (en)
AU (1) AU2003249131A1 (en)
CA (1) CA2494006C (en)
DE (1) DE10393022T5 (en)
FI (1) FI115615B (en)
WO (1) WO2004014619A1 (en)

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US7086173B1 (en) 2002-08-08 2006-08-08 Metso Paper, Inc. Method and device for calibrating the position of blades of a slitter-winder of a paper or board machine
DE102007000685A1 (en) 2007-08-31 2009-03-05 Voith Patent Gmbh Longitudinal role cutting machine for cutting running material web e.g. fibrous material web, has longitudinal cutting devices, and position determining device whose one portion is integrated in guiding device
DE102007047890A1 (en) 2007-11-29 2009-06-04 Voith Patent Gmbh Carriages or winding stations and longitudinal cutting devices positioning device for e.g. longitudinal cutting machine, has magnetic band provided with absolute coding, which is read by position detection devices e.g. reader
WO2009156566A1 (en) * 2008-06-26 2009-12-30 Metso Paper, Inc. Method and device for calibrating the position of blades of slitter- winder in fibrous-web machine

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DE102007047890A1 (en) 2007-11-29 2009-06-04 Voith Patent Gmbh Carriages or winding stations and longitudinal cutting devices positioning device for e.g. longitudinal cutting machine, has magnetic band provided with absolute coding, which is read by position detection devices e.g. reader
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Also Published As

Publication number Publication date
CA2494006C (en) 2009-01-06
FI20021454A0 (en) 2002-08-08
FI20021454A7 (en) 2004-03-05
AU2003249131A1 (en) 2004-02-25
US7086173B1 (en) 2006-08-08
FI115615B (en) 2005-06-15
DE10393022T5 (en) 2005-07-28
CA2494006A1 (en) 2004-02-19

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