SE2251024A1 - Apparatus, arrangement, and method of measuring rolls of fibrous web material - Google Patents

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

Info

Publication number
SE2251024A1
SE2251024A1 SE2251024A SE2251024A SE2251024A1 SE 2251024 A1 SE2251024 A1 SE 2251024A1 SE 2251024 A SE2251024 A SE 2251024A SE 2251024 A SE2251024 A SE 2251024A SE 2251024 A1 SE2251024 A1 SE 2251024A1
Authority
SE
Sweden
Prior art keywords
roll
contact element
sensing
end surface
rolls
Prior art date
Application number
SE2251024A
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
Publication of SE2251024A1 publication Critical patent/SE2251024A1/en

Links

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
    • 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
    • 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
    • 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

Landscapes

  • 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)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

An apparatus, arrangement and method of measuring rolls of fibrous web material. The apparatus (6) comprises a sensing device (7) which is provided with a contact element (8). The contact element is moved along an end surface (2) of a roll (1) and its movements (A) are sensed by means of a sensor (9). Further, the sensing device is connected to a moving device (10) capable of moving the sensing device in transverse direction of the roll.

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 nmterial, 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 næasure 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-HO5330657-A, JP-2001021319-A and FI-106446-B dis- the known measuring close some known solutions. However, systems have shown to include some problems.
Brief description of the invention An object of the invention is to provide a novel and improved apparatus, arrangement, and method for meas- uring the rolls.
The apparatus according to the invention is charac- terized by the characterizing features of the first inde- pendent apparatus claim.
The arrangement according to the invention is char- 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 contact with an end surface of the element in physical 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 næasuring. The disclosed solution is also robust and operates reliable due to its sensing principle. Furthermore, lightning, dust and other circumstances at the measuring location have no effect on the measuring.
According to an embodiment, the roll being measured is a standing roll, whereby the end surface is directed vertically. In other words, the solution relates to feeding of rolls standing on their cylinder surfaces.
According to an embodiment, the rolls are measured during their normal transportation path at production lo- The disclosed solution may be located between a slitter-winder cations at a paper mill or other production plant. 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, erably 0,2 According to an embodiment, pref- 0,6 mm. 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.
According' to an embodiment, the control unit is configured to provide data on profile of the end surface of the roll.
According to an apparatus, the control unit is pro- vided with limit values for allowed defects in form of the end surface. Then the control unit is can compare the sens- ing data to the input limit values and may accept the rolls withing the limit value and may provide control signals for 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 is 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 the moving device comprises two vertical guide- and the hori- solution, posts arranged at distance from each other, zontal support is nwunted vertically movably between the two vertical guideposts.
According' to an embodiment, the above mentioned first actuator is a linear actuator. According to an embodiment, the linear first actu- ator is a pressure medium operated cylinder or electrical solenoid.
According to an embodiment, the linear first actu- ator may alternatively comprise a motor and a gear system or toothed bar, and the motor may be an electrical motor or a pneumatic or hydraulic motor.
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- 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, the control unit is configured to stop the conveyor to place the roll to be measured at a predetermined measuring posi- tion in relation to the apparatus.
According to an embodiment, the disclosed solution relates also to a method of measuring shape of ends of rolls of fibrous web material on a conveyor. The method comprises: sensing the examined rolls by means of an apparatus com- prising at least one sensing device; providing the mentioned sensing device with at least one contact element; sensing 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 l 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 næasuring 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- ratus seen in longitudinal direction of a roll to be meas- ured, Figure 7 is a schematic top of the apparatus shown in the previous Figure 6, Figure 8 is a schematic top of a measuring apparatus 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 roll to be examined, Figure lO is a schematic top view of the apparatus seen in the previous Figure 9, and Figure ll 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 l discloses a roll l having a cylindrical 2b and a The roll l further comprises a longitudinal shape and comprising opposing end surfaces 2a, periphery 3. axis 4.
The roll l 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 2b for the rolls l. trates that a first and 2a may protrude outwardly and an flat end surfaces 2a, Figure 2 illus- opposing second end IH) 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 næasuring shape of an end of a roll. The apparatus 6 comprises one or more sensing devices 7 for sensing the shape of the end surfaces. The sensing device 7 comprises at least one contact element 8 and at least one sensor 9 for sensing movement of the contact element 8. Further, the apparatus 6 comprises one or more moving de- vices lO for setting the contact element 8 in physical contact with an end surface of the examined paper roll, and for moving the contact element 8 in transverse direction of the paper roll during the næasuring phase. The sensor 9 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 6 may comprise a first actuator ll for moving the contact element 8 in horizontal direction A towards an end surface 2 of a roll l. cylinder, The first actuator ll may be a pressure medium for example. A first sensor 9a is configured to sense the transverse movement. The contact element 8 may be a sensing roll l2 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 or in any other direction transverse The directed vertically, to the direction of longitudinal axis of the roll l. movement B may extend from a first peripheral edge point l3a to an opposite second peripheral edge point l3b. Fur- ther, the movement path B may or may not be arranged to pass via the central axis of the roll l. There may be one or more second sensors 9b for detecting movements in the direction B.
Figure 5 discloses that sensing data l4 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 l5 may be displayed on a user interface UI and desired data sets may be produced for further analysis and needs. Limit values l6 may also be input to the control unit CU so that it can be determined whether the shape of the end surface of the roll is ac- ceptable l7 or if the roll needs to be rejected l8 totally or rehandled l9 to put it into better condition.
Figure 6 discloses a measuring apparatus 6 provided with a moving device lO that comprises two vertical guide- post 20a, 20b arranged on opposing sides of a conveyor 2l on which a roll l is transported. A horizontal support 22 is mounted vertically movably on the vertical guideposts . 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 l. In Figure 6 details of the sensing device 7 are not shown. The sensing device 7 can be nwved 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 l when reaching the apparatus 6. A control unit CU can stop the conveyor 21 to place the roll l to be measured at a predetermined measuring position D in relation to the apparatus 6.
Figure 8 discloses a solution wherein two apparat- uses 6a, 6b are utilized for sensing both ends 2a, 2b of a roll l.
Figures 9 and lO 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 ll discloses a measuring apparatus 6 wherein a moving device lO comprises a robotic arm 26 capable to move in a versatile and accurate manner to different direc- tions. At a distal end of the robotic arm 26 is mounted a sensing device 7 which is accordance with the features dis- closed in this document.
The drawings and the related description are only intended to illustrate the idea of the invention. In its details, the invention may vary within the scope of the claims.

Claims (13)

Claims
1.l. An apparatus (6) for næasuring a roll (l) of fibrous web material; wherein the apparatus (6) comprises: at least one sensing device (7) for sensing shape roll (l); one control unit of an end of the and at least (CU) shape of the roll (l) which is configured to determine the (14) in response to sens- ing data received from the at least one sensing device (7): characterized in that the sensing device (7) comprises at least one con- and at least one sensor (9) for sensing (8): further comprises at least one tact element (8) movement of the contact element the apparatus (6) moving device (lO) for setting the contact element (8) in physical contact with an end surface (2, 2a, 2b) of the examined roll (l), and for moving the contact element (8) in transverse direction relative to longitudinal axis of the roll (l); and wherein the sensing data (14) be gathered from the at least one sensor (9) is configured to during the of the contact element (8) 2b); and further the moving device transverse movement (B) along the end surface (2, 21, (10) via central axis of the roll is configured to move the contact element (8) (l) whereby the apparatus is configured to detect also pos- sible protruding end of a core at a central part of the roll (1).
2. The apparatus as claimed in claim l, cl1areac- te ri ze<í in that (10) during the measuring procedure across of the roll (l) the moving device is configured to move the contact element (8) the end surface (2, 2a, 2b) from a firstperipheral edge point (13b). (13a) to an opposite second peripheral edge point 3. The apparatus as claimed in claim 1 or 2, chear- act:eri_ze<í in that
3.(CU) of the end surface (2, 2a, 2b) the control unit (15) is configured to provide data on profile of the roll (1).
4. The apparatus as claimed in any one of the pre- characterized in that (CU) for allowed defects in form of the end surface (2, 2a, ceding claims 1 - 3, the control unit is provided with limit values (16) 2b); (CU) to the input limit values (17) the rolls (1) and to provide control signals for directing (16) and the control unit (14) configured to accept (16) the rolls (1) dling process is configured to compare (16) within the limit the sensing data and is values exceeding the limit values to a rehan- (19) or rejection (18).
5. The apparatus as claimed in any one of the pre- ceding claims 1 - 4, c11a1:ac:te ri ze<í in that the contact element (8) is a sensing roll (12).
6. The apparatus as claimed in any one of the pre- characterized in that (25). ceding claims 1 - 4, the contact element (8) is a probe
7. The apparatus as claimed in any one of the pre- characterized in that (10) ceding claims 1 - 6, the moving device comprises at least one ver- tical guidepost (20) and a horizontal support (22) mounted vertically movably on the vertical guidepost (20); the sensing device (7) is mounted to the horizontal support (22) and is provided with a first actuator (11) forthe contact element (8) in transverse direction of the horizontal support (22) (2, 2a, 2b) of the roll (l); the sensing device (7) moving (A) and towards the end surface and (9a) of the con- comprises a first sensor configured to sense the transverse movement (A) tact element (8).
8. The apparatus as claimed in claim 7, cliaifacï- te ri ze<í in that the moving device (20a, 20b) the horizontal support (lO) comprises two vertical guide- posts arranged at distance from each other, and (22) between the two vertical guideposts is mounted vertically movably (20a, 20b).
9. The apparatus as claimed in claim 7 or 8, cliaif- act:eri_ze<í in that (ll) the first actuator is a linear actuator.
10. The apparatus as claimed in any one of the pre- ceding claims l - 6, cl1a1:ac:te ri ze<í in that the moving device (lO) 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- ing system for determining position of the contact element (8) in a three dimensional coordinate system; and (CU) (26) and is configured to calculate the sensing data of the roll (l). the control unit is configured to monitor move- and the contact element (8) (l4) of the ments of the robotic arm end surface (2, 2a, 2b)
11.ll. An arrangement for measuring rolls (l) of fi- brous web material, wherein the arrangement comprises:(21) at a production plant; a conveyor on the (21) at least one apparatus (6) for transporting rolls (1) conveyor and 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) (21). is arranged in con- nection with the conveyor
12. The arrangement as claimed in claim 11, chßar- act:eri_ze<í 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 næasured at a predetermined næasuring position (D) in relation to the apparatus (6).
13. A method of measuring rolls (1) of fibrous web (21), sensing shape of the examined rolls (1) material on a conveyor wherein the method comprises: by means of an apparatus (6) comprising at least one sensing device (7); cllaríacrte ri ze<í by providing the mentioned sensing device (7) with at least one contact element (8); sensing movement (A) of the contact element (8) with at least one sensor (9, 9a) while moving (B) the contact element (8) in physical contact on an end surface (2, 2a, 2b) of the examined roll (1);moving (B) the contact element (8) in transverse direction relative to longitudinal axis of the roll (l); 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 (l) detecting also possible protruding end of a core at a central part of the roll (l).
SE2251024A 2021-09-10 2022-09-05 Apparatus, arrangement, and method of measuring rolls of fibrous web material SE2251024A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20215957A FI129921B (en) 2021-09-10 2021-09-10 Apparatus, arrangement and method of measuring rolls of fibrous web material

Publications (1)

Publication Number Publication Date
SE2251024A1 true SE2251024A1 (en) 2023-03-11

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FI (1) FI129921B (en)
SE (1) SE2251024A1 (en)

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EP1530044A1 (en) * 2003-11-07 2005-05-11 Kimberly-Clark Worldwide, Inc. Roll firmness measuring system and process
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