FI129921B - Apparatus, arrangement and method of measuring rolls of fibrous web material - Google Patents

Apparatus, arrangement and method of measuring rolls of fibrous web material Download PDF

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Publication number
FI129921B
FI129921B FI20215957A FI20215957A FI129921B FI 129921 B FI129921 B FI 129921B FI 20215957 A FI20215957 A FI 20215957A FI 20215957 A FI20215957 A FI 20215957A FI 129921 B FI129921 B FI 129921B
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FI
Finland
Prior art keywords
roll
contact element
sensing
end surface
rolls
Prior art date
Application number
FI20215957A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20215957A1 (en
Inventor
Jari Nikula
Joni Lahtonen
Original Assignee
Raumaster 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 Raumaster Paper Oy filed Critical Raumaster Paper Oy
Priority to FI20215957A priority Critical patent/FI129921B/en
Priority to SE2251024A priority patent/SE2251024A1/en
Priority to DE102022003273.2A priority patent/DE102022003273A1/en
Application granted granted Critical
Publication of FI20215957A1 publication Critical patent/FI20215957A1/en
Publication of FI129921B publication Critical patent/FI129921B/en

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/04—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, presence of faulty articles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/28—Wound package of webs
    • 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
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
    • G01B5/008—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points using coordinate measuring machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/08—Detecting presence of flaws or irregularities
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • 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
    • 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
    • B65H2511/51—Presence
    • 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
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • 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
    • B65H2553/00—Sensing or detecting means
    • B65H2553/60—Details of intermediate means between the sensing means and the element to be sensed
    • B65H2553/61—Mechanical means, e.g. contact arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/80—Arangement of the sensing means
    • B65H2553/81—Arangement of the sensing means on a movable element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/84—Paper-making machines

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

Laitteisto, järjestely ja menetelmä kuiturainamateriaalirullien mittaamiseksi. Laitteisto (6) käsittää ilmaisinlaitteen (7), joka on varustettu kontaktielementillä (8). Kontaktielementtiä liikutetaan rullan (1) päätypintaa (2) pitkin ja sen liikkeitä (A) havaitaan anturin (9) avulla. Edelleen ilmaisinlaite on kytketty liikutuslaitteeseen (10), joka pystyy liikuttamaan ilmaisinlaitetta rullan poikittaissuunnassa.

Description

Apparatus, arrangement, and method of measuring rolls of fibrous web material Background of the invention The invention relates to an apparatus for measuring of rolls of fibrous web material, such as paper rolls.
Especially the invention relates to a measuring apparatus for sensing shape of an end of the examined roll on the conveyor at a paper mill or other production plant.
The invention further relates to an arrangement and method of measuring rolls of fibrous web material.
The field of the invention is defined more specif- ically in the preambles of the independent claims.
Fibrous web material, such as paper and board, are rolled on cores for producing rolls at paper mills and other production plants for facilitating handling and transpor- tation.
However, shape of the rolls may have deviations which may cause problems when stacking the rolls on each other.
Therefore, it is typical to measure the rolls by means of measuring means at the production plant in order to avoid problems at later phases.
For example, optical measuring systems have been developed for the purpose.
Doc- uments JP-H05330657-A, JP-2001021319-A and FI-106446-B dis- close some known solutions.
However, the known measuring systems have shown to include some problems. 3 25 Brief description of the invention N An object of the invention is to provide a novel 3 and improved apparatus, arrangement, and method for meas- 2 uring the rolls. = The apparatus according to the invention is charac- * 30 terized by the characterizing features of the first inde- 5 pendent apparatus claim. = The arrangement according to the invention is char- S acterized by the characterizing features of the second in- dependent apparatus claim.
The method according to the invention is character- ized by the charactering features and steps of an independ- ent method claim.
An idea of the disclosed solution is that the meas- uring apparatus comprises at least one sensing device for sensing shape of an end of the paper roll. One or more control units are configured to determine the shape of the paper roll in response to sensing data received from the at least one sensing device. The sensing device comprises at least one contact element and at least one sensor for sens- ing movement of the contact element. The apparatus further comprises at least one moving device for setting the contact element in physical contact with an end surface of the examined paper roll, and for moving the contact element in transverse direction of the paper roll. The sensing data is gathered from the at least one sensor during the transverse movement of the contact element.
In other words, the shape of the end surface is sensed by means of mechanical means and by utilizing direct mechanical contact.
An advantage of the disclosed solution is that col- ors and other properties of the paper or other fibrous web material being wound on the roll have no influence on ac- curacy of the measuring. The disclosed solution is also robust and operates reliable due to its sensing principle.
N Furthermore, lightning, dust and other circumstances at the N measuring location have no effect on the measuring.
N According to an embodiment, the roll being measured P is a standing roll, whereby the end surface is directed & 30 vertically. In other words, the solution relates to feeding E of rolls standing on their cylinder surfaces.
KN According to an embodiment, the rolls are measured 3 during their normal transportation path at production 10- N cations at a paper mill or other production plant. The N 35 disclosed solution may be located between a slitter-winder and a warehouse, for example.
According to an embodiment, the disclosed solution is designed to detect failures in axial shapes of the end surfaces i.e., to detect a so called roll dishing or tele- scoping roll phenomena.
According to an embodiment, measuring accuracy of the disclosed solution is some tenths of millimeter, pref- erably 0,2 —- 0,6 mm.
According to an embodiment, the moving device is configured to move the contact element via central axis of the roll.
According to an embodiment, the apparatus is con- figured to detect also possible protruding end of a core at a central part of the roll.
According to an embodiment, the moving device is alternatively configured to drive the contact element at an offset from the central axis of the roll so that the contact element is configured to pass a possibly protruding end of a core of the roll.
According to an embodiment, the moving device moves the contact element during the measuring procedure across the end surface of the paper roll from a first peripheral edge point to an opposite second peripheral edge point.
According to an embodiment, the moving device is configured to move the contact element alternatively a lim- ited distance in radial direction of the end surface of the roll.
N According to an embodiment, the control unit is N configured to provide data on profile of the end surface of T the roll.
S 30 According to an apparatus, the control unit is pro- E vided with limit values for allowed defects in form of the K end surface.
Then the control unit is can compare the sens- 3 ing data to the input limit values and may accept the rolls N withing the limit value and may provide control signals for N 35 directing the rolls exceeding the limit values to a rehan- dling process or rejection.
In other words, the control unit executes control measures in accordance with the detected flatness defects.
According to an embodiment, the contact element is a sensing roll.
According to an embodiment, the contact element is a freely rotating sensing roll.
According to an embodiment, the contact element is a probe.
According to an embodiment, the contact element may be a pin with a rounded sensing head, or a sliding element with any shape or form, for example.
According to an embodiment, the moving device com- prises at least one vertical guidepost and a horizontal support mounted vertically movably on the vertical guide- post. The sensing device 1s mounted to the horizontal sup- port and is provided with a first actuator for moving the contact element is transverse direction of the horizontal support and towards the end surface of the roll. And fur- ther, the sensing device comprises a first sensor configured to sense the transverse movement of the contact element.
According to an embodiment, in the above disclosed solution, the moving device comprises two vertical guide- posts arranged at distance from each other, and the hori- zontal support is mounted vertically movably between the two vertical guideposts.
N According to an embodiment, the above mentioned S first actuator is a linear actuator.
N According to an embodiment, the linear first actu- <Q ator is a pressure medium operated cylinder or electrical S 30 solenoid.
E According to an embodiment, the linear first actu- K ator may alternatively comprise a motor and a gear system 3 or toothed bar, and the motor may be an electrical motor or N a pneumatic or hydraulic motor.
N 35 According to an embodiment, in connection with the first moving actuator is a detector for sensing when the contact element reaches the contact with the end surface.
The detector may be a pressure sensor or proximity detector, for example.
According to an embodiment, the moving device com- 5 prises at least one robotic arm.
The contact element is mounted to a free end of the robotic arm.
The moving device is provided with a positioning system for determining po- sition of the contact element in a three dimensional coor- dinate system, and the control unit is configured to monitor movements of the robotic arm and the contact element and is configured to calculate the sensing data of the end surface of the measure roll.
According to an embodiment, the disclosed solution relates also to an arrangement for measuring rolls of fi- brous web material.
The arrangement comprises: a conveyor for transporting rolls on the conveyor at a production plant or paper mill; and at least one apparatus for sensing shape of the examined rolls and comprising at least one sensing device.
The apparatus for measuring the rolls is in accord- ance with the features disclosed in this document and the apparatus is arranged in connection with the conveyor.
According to an embodiment, the conveyor is a con- tinuous transport conveyor.
The arrangement comprises at least one detecting device for detecting position of an end surface of the roll when reaching the apparatus.
Further, N the control unit is configured to stop the conveyor to place N the roll to be measured at a predetermined measuring posi- N tion in relation to the apparatus. ? According to an embodiment, the disclosed solution S 30 relates also to a method of measuring shape of ends of rolls E of fibrous web material on a conveyor.
The method comprises: s sensing the examined rolls by means of an apparatus com- 23 prising at least one sensing device; providing the mentioned N sensing device with at least one contact element; sensing N 35 movement of the contact element with at least one sensor while moving the contact element in physical contact on an end surface of the examined roll; moving the contact element in transverse direction relative to longitudinal axis of the roll; and gathering sensing data from the sensor during the transverse movement of the contact element.
According to an embodiment, only one end of the roll is measured. Alternatively, both ends of the roll are meas- ured, whereby two apparatuses are provided for the measur- ing.
The above disclosed embodiments may be combined in order to form suitable solutions having those of the above features that are needed.
Brief description of the figures Some embodiments are described in more detail in the accompanying drawings, in which Figure 1 is a schematic view of a roll of fibrous web material, Figure 2 is a schematic top view of a roll and its shaped end surfaces, Figure 3 is a schematic diagram of some features of an apparatus intended for measuring shapes of ends of rolls, Figure 4 is a schematic side view of a measuring principle of the disclosed solution, Figure 5 is a schematic diagram showing some measures of executed during measuring phases, Figure 6 is a schematic view of a measuring appa- N ratus seen in longitudinal direction of a roll to be meas- N ured, = Figure 7 is a schematic top of the apparatus shown S in the previous Figure 6, = 30 Figure 8 is a schematic top of a measuring apparatus N provided with means for sensing both end surfaces of a roll, & Figure 9 is a schematic view of an alternative type = of a measuring device seen in longitudinal direction of a NN roll to be examined, Figure 10 is a schematic top view of the apparatus seen in the previous Figure 9, and
Figure 11 is a schematic view of a measuring device provided with a robotic arm for moving the sensing device on an end surface of a roll. For the sake of clarity, the figures show some em- bodiments of the disclosed solution in a simplified manner. In the figures, like reference numerals identify like ele- ments.
Detailed description of some embodiments Figure 1 discloses a roll 1 having a cylindrical shape and comprising opposing end surfaces 2a, 2b and a periphery 3. The roll 1 further comprises a longitudinal axis 4. The roll 1 may comprise wounded paper, board, or other fibrous web material. The fibrous web material may be wound on a core 5.
Figure 2 discloses that problems in handling of rolls and inaccuracy in their winding process may cause non flat end surfaces 2a, 2b for the rolls 1. Figure 2 illus- trates that a first and 2a may protrude outwardly and an opposing second end 2b may protrude inwardly. It is of course clear that this kind of end shapes will cause prob- lems in further processes wherefore such rolls need to be recognized and separated.
Figure 3 discloses main features of an apparatus 6 for sensing or measuring shape of an end of a roll. The apparatus 6 comprises one or more sensing devices 7 for N sensing the shape of the end surfaces. The sensing device N 7 comprises at least one contact element 8 and at least one 3 sensor 9 for sensing movement of the contact element 8. S Further, the apparatus 6 comprises one or more moving de- = 30 vices 10 for setting the contact element 8 in physical N contact with an end surface of the examined paper roll, and & for moving the contact element 8 in transverse direction of 5 the paper roll during the measuring phase. The sensor 9 N produces sensing data which is transmitted to a control units CU through a data communication connection, which may be wired or wireless.
Figure 4 discloses that a measuring apparatus © may comprise a first actuator 11 for moving the contact element 8 in horizontal direction A towards an end surface 2 of a roll 1. The first actuator 11 may be a pressure medium cylinder, for example. A first sensor 9a is configured to sense the transverse movement. The contact element 8 may be a sensing roll 12 which is rolled along the end surface 2. The contact element 8 is initially set by the movement A against the end surface 2 and thereafter the actual meas- uring is executed by the transverse movement B of the con- tact element 8 along the end surface. The movement B may be directed vertically, or in any other direction transverse to the direction of longitudinal axis of the roll 1. The movement B may extend from a first peripheral edge point 13a to an opposite second peripheral edge point 13b. Fur- ther, the movement path B may or may not be arranged to pass via the central axis of the roll 1. There may be one or more second sensors 9b for detecting movements in the direction B.
Figure 5 discloses that sensing data 14 produced by the sensors is gathered and is input to a control unit CU, which is provided with at least one processor and a computer program product for processing the sensing data and for determining shape data on end surface of a roll. The pro- duced data, such as data on end profile 15 may be displayed N on a user interface UI and desired data sets may be produced N for further analysis and needs. Limit values 16 may also be N input to the control unit CU so that it can be determined P whether the shape of the end surface of the roll is ac- S 30 ceptable 17 or if the roll needs to be rejected 18 totally E or rehandled 19 to put it into better condition. IS Figure 6 discloses a measuring apparatus 6 provided 23 with a moving device 10 that comprises two vertical guide- N post 20a, 20b arranged on opposing sides of a conveyor 21 N 35 on which a roll 1 is transported. A horizontal support 22 is mounted vertically movably on the vertical guideposts
20. A sensing device 7 is mounted to the horizontal support 22 and is provided with a first actuator for moving the contact element in transverse direction of the horizontal support 22 and towards an end surface 2 of the roll 1. In Figure 6 details of the sensing device 7 are not shown. The sensing device 7 can be moved along a vertical line 23 during the measuring. Figure 7 is a top view of the arrangement of Figure
6. The conveyor 21 may be a continuous transport conveyor and there may be one or more detecting devices 24 for de- tecting position of at least one of the end surfaces 2a, 2b of the roll 1 when reaching the apparatus 6. A control unit CU can stop the conveyor 21 to place the roll 1 to be measured at a predetermined measuring position D in relation to the apparatus €. Figure 8 discloses a solution wherein two apparat- uses 6a, 6b are utilized for sensing both ends 2a, 2b of a roll 1. Figures 9 and 10 disclose a measuring apparatus 6 which differs from the shown in Figures 6 - 8 in that a moving device 10 comprises only one vertical guidepost 20. Further, a contact element 8 of a sensing device 7 is a probe 25. Figure 11 discloses a measuring apparatus 6 wherein a moving device 10 comprises a robotic arm 26 capable to move in a versatile and accurate manner to different direc- N tions. At a distal end of the robotic arm 26 is mounted a N sensing device 7 which is accordance with the features dis- T closed in this document. S 30 The drawings and the related description are only E intended to illustrate the idea of the invention. In its K details, the invention may vary within the scope of the 3 claims.
S

Claims (13)

Claims
1. An apparatus (6) for measuring a roll (1) of fibrous web material; wherein the apparatus (6) comprises: at least one sensing device (7) for sensing shape of an end of the roll (1); and at least one control unit (CU) which is configured to determine the shape of the roll (1) in response to sens- ing data (14) received from the at least one sensing device (7) 7 characterized in that the sensing device (7) comprises at least one con- tact element (8) and at least one sensor (9) for sensing movement of the contact element (8); the apparatus (6) further comprises at least one moving device (10) for setting the contact element (8) in physical contact with an end surface (2, 2a, 2b) of the examined roll (1), and for moving the contact element (8) in transverse direction relative to longitudinal axis of the roll (1); and wherein the sensing data (14) is configured to be gathered from the at least one sensor (9) during the transverse movement (B) of the contact element (8) along the end surface (2, 21, 2b); N and further the moving device (10) is configured to N move the contact element (8) via central axis of the roll N (1) whereby the apparatus is configured to detect also pos- <Q sible protruding end of a core at a central part of the roll S 30 (1). = a K
2. The apparatus as claimed in claim 1, charac- 3 terized in that N the moving device (10) is configured to move the N 35 contact element (8) during the measuring procedure across the end surface (2, 2a, 2b) of the roll (1) from a first peripheral edge point (13a) to an opposite second peripheral edge point (13b).
3. The apparatus as claimed in claim 1 or 2, char- acterized in that the control unit (CU) is configured to provide data on profile (15) of the end surface (2, 2a, 2b) of the roll (1).
4. The apparatus as claimed in any one of the pre- ceding claims 1 - 3, characterized in that the control unit (CU) is provided with limit values (16) for allowed defects in form of the end surface (2, 2a, 2b); and the control unit (CU) is configured to compare the sensing data (14) to the input limit values (16) and is configured to accept (17) the rolls (1) within the limit values (16) and to provide control signals for directing the rolls (1) exceeding the limit values (16) to a rehan- dling process (19) or rejection (18).
5. The apparatus as claimed in any one of the pre- ceding claims 1 - 4, characterized in that the contact element (8) is a sensing roll (12).
N
6. The apparatus as claimed in any one of the pre- N ceding claims 1 - 4, characterized in that N the contact element (8) is a probe (25). <Q S 30
7. The apparatus as claimed in any one of the pre- E ceding claims 1 - 6, characterized in that K the moving device (10) comprises at least one ver- 3 tical guidepost (20) and a horizontal support (22) mounted N vertically movably on the vertical guidepost (20); N 35 the sensing device (7) is mounted to the horizontal support (22) and is provided with a first actuator (11) for moving (A) the contact element (8) in transverse direction of the horizontal support (22) and towards the end surface (2, 2a, 2b) of the roll (1); and the sensing device (7) comprises a first sensor (9a) configured to sense the transverse movement (A) of the con- tact element (8).
8. The apparatus as claimed in claim 7, charac- terized in that the moving device (10) comprises two vertical guide- posts (20a, 20b) arranged at distance from each other, and the horizontal support (22) is mounted vertically movably between the two vertical guideposts (20a, 20b).
9. The apparatus as claimed in claim 7 or 8, char- acterized in that the first actuator (11) is a linear actuator.
10. The apparatus as claimed in any one of the pre- ceding claims 1 - 6, characterized in that the moving device (10) comprises at least one ro- botic arm (26); the contact element (8) is mounted to a free end of the robotic arm (26); the moving device (10) is provided with a position- N ing system for determining position of the contact element S (8) in a three dimensional coordinate system; and N the control unit (CU) is configured to monitor move- P ments of the robotic arm (26) and the contact element (8) S 30 and is configured to calculate the sensing data (14) of the E end surface (2, 2a, 2b) of the roll (1). 5 2 11. An arrangement for measuring rolls (1) of fi- N brous web material, N 35 wherein the arrangement comprises:
a conveyor (21) for transporting rolls (1) on the conveyor (21) at a production plant; and at least one apparatus (6) for sensing shape of the examined rolls (1) and comprising at least one sensing de- vice (7); characterized in that the apparatus (6) for measuring the rolls (1) is in accordance with the previous claims 1 - 10; and wherein the apparatus (6) is arranged in con- nection with the conveyor (21).
12. The arrangement as claimed in claim 11, char- acterized in that the conveyor (21) is a continuous transport con- veyor; the arrangement comprises at least one detecting device (24) for detecting position of an end surface (2, 2a, 2b) of the roll (1) when reaching the apparatus (6); and the control unit (CU) is configured to stop the conveyor (21) to place the roll (1) to be measured at a predetermined measuring position (D) in relation to the apparatus (6).
13. A method of measuring rolls (1) of fibrous web N material on a conveyor (21), wherein the method comprises: O sensing shape of the examined rolls (1) by means of LÖ an apparatus (6) comprising at least one sensing device (7); <Q characterized by S 30 providing the mentioned sensing device (7) with at E least one contact element (8); KN sensing movement (A) of the contact element (8) with 3 at least one sensor (9, 9a) while moving (B) the contact N element (8) in physical contact on an end surface (2, 2a, N 35 2b) of the examined roll (1);
moving (B) the contact element (8) in transverse direction relative to longitudinal axis of the roll (1); gathering sensing data (14) from the sensor (9, 9a) during the transverse movement of the contact element (8) along the end surface (2, 21, 2b); and moving the contact element (8) via central axis of the roll (1) detecting also possible protruding end of a core at a central part of the roll (1).
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N
O
N
O <Q 0) oO
I jami a
N
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O
LO
N
O
N
FI20215957A 2021-09-10 2021-09-10 Apparatus, arrangement and method of measuring rolls of fibrous web material FI129921B (en)

Priority Applications (3)

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FI20215957A FI129921B (en) 2021-09-10 2021-09-10 Apparatus, arrangement and method of measuring rolls of fibrous web material
SE2251024A SE2251024A1 (en) 2021-09-10 2022-09-05 Apparatus, arrangement, and method of measuring rolls of fibrous web material
DE102022003273.2A DE102022003273A1 (en) 2021-09-10 2022-09-06 Device, arrangement and method for measuring rolls of fibrous web material

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JPH05330657A (en) 1992-05-27 1993-12-14 Mitsubishi Heavy Ind Ltd Paper roll stacking compatibility discriminating device
US6036137A (en) * 1998-12-17 2000-03-14 Valmet-Karlstad Ab Apparatus and method for winding paper
JP2001021319A (en) 1999-07-06 2001-01-26 Nippon Paper Industries Co Ltd Method and instrument for measuring eccentricity of continuous paper roll
US7127951B2 (en) * 2003-11-07 2006-10-31 Kimberly-Clark Worldwide, Inc. Roll firmness measuring system and process
DE102005032600B4 (en) * 2005-07-13 2007-10-25 Koenig & Bauer Aktiengesellschaft Device for aligning a roll of material in front of the uprights in a reel changer

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