WO2001098188A1 - Method and device in a change in reeling up of a paper web - Google Patents
Method and device in a change in reeling up of a paper web Download PDFInfo
- Publication number
- WO2001098188A1 WO2001098188A1 PCT/FI2001/000575 FI0100575W WO0198188A1 WO 2001098188 A1 WO2001098188 A1 WO 2001098188A1 FI 0100575 W FI0100575 W FI 0100575W WO 0198188 A1 WO0198188 A1 WO 0198188A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- paper web
- tension measurement
- reeling
- tension
- machine reel
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/26—Cutting-off the web running to the wound web roll
-
- 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
- B65H18/08—Web-winding mechanisms
- B65H18/10—Mechanisms in which power is applied to web-roll spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/2207—Changing the web roll in winding mechanisms or in connection with winding operations the web roll being driven by a winding mechanism of the centre or core drive type
-
- 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
- B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4146—Winding involving particular drive arrangement
- B65H2301/41466—Winding involving particular drive arrangement combinations of drives
- B65H2301/41468—Winding involving particular drive arrangement combinations of drives centre and nip drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/515—Cutting handled material
- B65H2301/5153—Details of cutting means
- B65H2301/51534—Water jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2408/00—Specific machines
- B65H2408/20—Specific machines for handling web(s)
- B65H2408/23—Winding machines
- B65H2408/236—Pope-winders with first winding on an arc of circle and secondary winding along rails
Definitions
- the invention relates to a method in a change conducted in the reeling up of a paper web according to the preamble of the appended claim 1.
- the invention also relates to a device for implementing the aforementioned method according to the preamble of the appended claim 13.
- a continuous paper web of several meters in width which is passed directly from a paper machine or from a finishing treatment apparatus connected thereto in a continuous, on-line type manner, or from a separate off-line type finishing treatment apparatus is reeled in the reel- up to form successive so-called machine reels around reeling cores (reel spools).
- These large machine reels which substantially comply with the width of production of paper, function as kind of intermediate storages for the paper web between off-line type finishing processes. Such further processing may relate for example to coating and calendering of paper.
- the web reeled on the machine reels substantially in the produc- tion width is unwound and cut in the longitudinal direction into narrower part webs of which customer rolls are formed.
- the width and size of the customer rolls are adjusted to comply with the requirements of the customer and the further use of the rolls.
- reel-up solutions of which a reel-up type generally used at present in the reeling up of large-sized, large-mass machine reels is a so-called center drive assisted reel-up.
- the aforementioned reel-up type utilizes either a stationary or moving reeling cylinder equipped with a center drive and a growing machine reel in a reeling position in a so-called nip contact with said reeling cylinder.
- the paper web is guided on the machine reel via a nip formed between said reeling cylinder and the machine reel that is being formed.
- the reel spool functioning as a reeling core for the machine reel is provided with a separate center drive of its own in addition to the fact that the aforementioned reeling cylinder is rotated with a center drive.
- the machine reel that is being formed obtains the impetus necessary for its rotation merely via the nip contact, in other words by means of friction from the reeling cylinder through the paper web.
- control variables which are, for example the nip force (linear load) of the reeling nip, the peripheral force exerted on the paper web by the machine reel, and the web tension of the paper web determined before the nip and the reel- ing cylinder.
- the nip force is adjusted by loading the machine reel that is being formed and the reeling cylinder against each other for example by means of hydraulic cylinders, or the like.
- the torque of the center drive of the reeling cylinder is utilized to affect the web tension of the paper web on the free section of the paper web preceding the nip.
- the present invention is especially intended to be used in connection with the aforementioned center drive assisted reel-ups.
- the machine reel formed in center drive assisted reel-ups can, when located in the reeling position during the reeling up process, be arranged to move with respect to the reeling cylinder to adjust the nip force between the machine reel and said reeling cylinder, and/or to take into account the changing diameter of the growing machine reel.
- the adjustment of the nip force can also be implemented by moving the reeling cylinder.
- a known reel-up is also a reel-up used for reeling up of machine reels in which the machine reel rotates in its position, and the reeling cylinder is loaded against the reel to adjust the nip force and moved in accor- dance with the growth of the machine reel.
- the actual reeling cylinder it is possible to use other known mechanical solutions in the reel-up that function in a nip-like manner, for example a combination of a reeling cylinder and a belt.
- the finished full machine reel is decelerated and transferred away from the reel-up.
- the cutting of the paper web is conducted by means of a cutting member placed after the reeling cylinder in the travel direction of the paper web, but there are also known solutions in which the cutting of the web is conducted by means of a cutting member located before the reeling cylinder.
- the paper web reeled on said machine reel travels via the reeling cylinder, possibly in interaction with the empty reeling core which is already brought in nip contact with the reeling cylinder, wherein tension measurement of prior art does not describe the situation in the section of the paper web succeeding the reeling cylinder in a reliable manner.
- tension measurement of prior art does not describe the situation in the section of the paper web succeeding the reeling cylinder in a reliable manner.
- Poorly reeled surface layers of the machine reel rotating at high speed may be loosened entirely and broken due to the effect of centrifugal force before said machine reel that is becoming full is stopped, which causes losses as well as a need to clean up the surroundings of the reel-up.
- the use of too small a peripheral force increases the tendency of air drifting underneath the paper web that is being reeled up, especially when coated and/or calendered paper grades are reeled up.
- Too large a peripheral force may, in turn, cause tearing of the paper web that is being reeled up, and/or damaging of the lower layers that have already been reeled on the machine reel.
- Poorly reeled surface layers can also complicate the intermediate storing of the machine reel and affect the treatment endurance and storage life of the same, and at later treatment stages of the machine reel at the latest, they cause ad- ditional work and losses.
- the main purpose of the present invention is to attain a method by means of which it is possible in the reeling up process, during a change sequence conducted with an open nip to better control the tension of the paper web on the section succeeding the reeling cylinder, thus avoiding the above-described problems caused by the inaccurate tension of the paper web on said section. It is also an aim of the invention to provide a device implementing the aforementioned method.
- the method according to the invention is primar- ily characterized in what will be presented in the characterizing part of the independent claim 1.
- the device according to the invention is primarily characterized in what will be presented in the characterizing part of the independent claim 13.
- the invention is based on the idea that when the machine reel that is being formed is transferred from the reeling cylinder or another member functioning in a nip-like manner, in other words away from a nip contact in general, and when the reeling up is continues to said machine reel until the paper web in continuous motion is cut, tension measurement is used in the free section of the paper web after said member that functions in a nip-like manner.
- the tension measurement member which can comply with prior art as such, is thus placed in the area of the paper web between the aforementioned member, such as a reeling cylinder, that functions in a nip-like manner and the machine reel that is becoming full.
- the tension information given by the tension measurement implemented according to the invention it is, for example possible to optimally control the center drive of the machine reel that is be- coming full in such a manner that the tension of the paper web in the aforementioned section of the paper web can be made suitable both for the reeling up of the final surface layers of the machine reel that is becoming full and other measures included in the change sequence, such as cutting and threading of the paper web.
- the operating principle of the tension measurement member complies with an earlier publication EP0367901 of the applicant.
- the paper web is in a direction transverse to its travel direction provided with a guiding surface, such as a beam, the paper web moving with respect to the guid- ing surface producing a thin layer of air between itself and said guiding member, and the tension of the paper web is determined from the air pressure of said layer of air by means of local pressure measurements.
- the method according to the invention can be advantageously imple- mented by connecting/fastening the tension measurement member to another member to be used in connection with the change sequence, which said member is transferred to such a position during the change sequence in which the tension measurement member connected/fastened thereto is in an operating position with respect to the paper web to conduct tension measurement above and/or below the paper web.
- the aforementioned member can be a cutting device located after the reeling cylinder in the travel direction of the paper web or a turnup member used for guiding the end of the paper web to a new reeling core.
- Said member can also be a so-called pressing device to be moved on the surface of the machine reel in connection with the change sequence, the purpose of which pressing device is to prevent the slackening of the surface layers of the machine reel and the access of air underneath the same during the change sequence.
- the tension measurement member positioned according to the invention is, in addition to the tension measurement, used as a guiding member for the paper web.
- Fig. 1 shows in a principled side-view the essential parts of a center drive assisted reel-up as well as a tension measurement member positioned in accordance with prior art
- Fig. 2 shows in a side-view the essential parts of a center drive assisted reel-up in a change situation with an open nip, as well as a tension measurement member positioned in ac- cordance with an embodiment of the invention
- Figs. 3 to 5 illustrate in principled side-views in more detail the temporal progression of the embodiment according to Fig. 2 during a change sequence
- Fig. 6 shows in a principled side-view a second embodiment of the invention
- Fig. 7 shows in a principled side-view a third embodiment of the invention
- Figs. 8 to 10 show in a principled side-view the temporal progression of a fourth embodiment of the invention during a change sequence
- Fig. 11 shows in a principled side-view a fifth embodiment of the invention
- Fig. 12 shows in a principled diagram the use of measurement data given by the tension measurement conducted according to the invention in the control of reeling up.
- Fig. 1 shows in a principled side-view the essential parts of a center drive assisted reel-up as well as a tension measurement member positioned in accordance with prior art.
- Fig. 1 does not describe the parts and functions of the reel-up that are irrelevant in view of the present invention, such as for example frame structures and supporting structures or moving mechanisms and operating mechanisms.
- the reeling cylinder 11 rotates at peripheral speed corresponding to the speed of the paper web W, and by means of axles located at the ends it is mounted on bearings to the frame of the reeling device or to a member fixed to the frame.
- the reeling cylinder 11 can also be located in movable carriages or corresponding movable structures.
- the reeling cylinder 11 is coupled to a center drive device via the other end of the cylinder, which center drive device, in turn, is linked to the operation of the part of the systemthat feeds the paper web W, in such a manner that the peripheral speed of the reeling cylinder 11 can be adjusted so that it corresponds to the speed of the web W fed to the reel-up.
- Fig. 2 illustrates in a principled side-view the basic idea of the present invention in a change situation in which a full machine reel 13 that is about to be completed is transferred away from the nip contact (in other words to an open nip situation) and the empty reeling core 21 is brought in a position of readiness for cutting of the paper web W.
- the section of the paper web W after the reeling cylinder 11 does not give exact tension information for the control of the center drive of the machine reel 13 in the situation of Fig. 2.
- the information obtained from the tension measurement member TM2 enables the control of the center drive of the machine reel 13 by feedback coupling in such a manner that the structure of the machine reel 13 remains optimal also for the part of the final surface layers that are reeled up.
- a suitable pe- ripheral force exerted on the paper web W that is being reeled up by the machine reel 13 prevents the surface layers of the machine reel from being reeled up too tightly or too loosely, which causes problems that have been described earlier in this text.
- the use of the information given by the tension measurement in controlling the reeling up process in an open nip situation will be described in more detail later in this text by means of Fig. 12.
- Figs. 3 to 5 illustrate in principled side-views the temporal progression of the change sequence in an embodiment of the invention in more detail.
- the machine reel 13 that is becoming full is pulled away from the nip contact, in other words off the reeling cylinder 11 , in the beginning of the change sequence.
- the tension measurement member TM2 is brought in contact with the paper web W in the area between the reeling cylinder 11 and said machine reel 13 that is becoming full.
- the empty reeling core 21 is brought to the vicinity of the reeling cylinder 11 to be ready for the change.
- the machine reel 13 can in the situation of Fig. 3 be supported at its ends on a carriage, reeling carriages, etc.
- the machine reel 13 may also be supported at its ends on rails directly by means of bearing housings located at the ends of the reeling core 12.
- the machine reel 13 is rotated by means of a center drive.
- the empty reeling core 21 is, in turn, fixed to a so-called primary reeling device, which, according to prior art, comprises a separate center drive for the reeling core 21.
- the main purpose of the primary reeling device which, since it does not constitute a part of the invention, is not described in Figs 3 to 5, is to receive the empty reeling core 21 from a storage containing reeling cores, which storage can be located for example above the reeling cylinder 11 and the paper web with respect to the reeling cylinder 11 , and to transfer said reeling core 21 to the vicinity of the reeling cylinder 11 to change the reeling up to an empty reeling core.
- the tension measurement member TM2 placed on the free section of the paper web after the reeling cylinder 11 is fixed to a moving mechanism (not shown in Figs 3 to 5), which makes it possible to transfer the tension measurement member TM2 to a measuring position with respect to the paper web W.
- Said moving mechanism can be for example a mechanism which is fixed to a carriage or a corresponding mechanism used for transferring the machine reel 13.
- Fig. 4 the empty reeling core 21 is turned to a position of readiness by means of the primary reeling device, in other words from above the reeling cylinder 11 closer to the paper web W and closer to the section of the paper web between the reeling cylinder 11 and the machine reel 13.
- the reeling core 21 is accelerated to the web speed by means of a center drive affecting the center of the reeling core 21 of the primary reeling device (hereinbelow shortly primary drive).
- the nip between the empty reeling core 21 and the reeling cylinder 11 (hereinbelow shortly primary nip) can still be open at this stage.
- the cutting member conducting the cutting of the paper web is transferred to a working position, if the applied solution of prior art is such that the cutting member is not located fixedly in a suitable position, or it has not been transferred to said position already at an earlier stage of the change sequence.
- the cutting of the paper web W can be conducted according to prior art known as such vertically or diagonally with respect to the travel direction of the paper web W, by cutting the paper web at once in full width or by means of one or more blade members moving in the transverse direction of the paper web.
- the cutting member may be based either in the use of mechanical blade/blades or a jet of pressurized air or water can also function as a blade member.
- the cutting can be based on controlled tearing of the paper web after the initial cut is made by means of the aforementioned cutting member.
- the cutting member which in Fig. 5 is marked in a simplified manner by means of arrows B1 and B2, can be located either after the reeling cylinder, i.e. cutting member B2, or before the reeling cylinder, i.e. cutting member B1 , in the travel direction of the paper web.
- the center drive of the machine reel 13 that is becoming full (herein- below shortly secondary drive) is coupled to be controlled on the basis of the measurement information obtained from the tension measurement member TM2 as soon as the tension measurement member TM2 is transferred to a suitable measurement position for said measurement when the machine reel 13 disengages itself from the nip contact, in other words when the so-called secondary nip between the reeling cylinder 11 and said reel is opened.
- the reeling up process is continued under the control of the measurement data obtained from the tension measurement member TM2 until the paper web W is cut by means of the cutting member B1 or B2.
- the load of the secondary drive in other words the speed of rotation and torque are locked into fixed values, and, if necessary, the tension measurement member TM2 is switched off/transferred away from the paper web W to prevent the damaging of said measurement member.
- the paper web W is cut according to prior art and thereafter the cut paper web W is threaded to the empty reeling core 21.
- the speed of rotation of the full machine reel 13 is decelerated and the rotation of the machine reel is stopped, whereafter said ma- chine reel is transferred away from the reel-up.
- the reeling core 21 and the new machine reel formed thereon is, according to prior art, transferred away from the control of the primary reeling device for example by changing a secondary drive to the free end of the reeling core 21 , and by detaching the primary drive from the other end in such a manner that the torque required in the rotation of the reeling core is ramped, in other words changed gradually from said primary drive to said secondary drive.
- the primary reeling device When the primary reeling device has become free, the primary reeling device returns to retrieve the next empty reel- ing core ready for the next change sequence.
- the tension measurement member TM2 is connected to the cutting member 61 , and the thereby produced combination can be moved with respect to the paper web W by using one moving mechanism.
- the need to arrange separate moving mechanisms both for the tension measurement member TM2 and the cutting member 61 can be avoided.
- the function of the tension measurement member TM2 is advantageously based on the measurement of air pressure between the guiding member arranged in a direction transverse with respect to the travel direction of the paper web W, as described in the earlier publication EP0367901 of the applicant, and the cutting member 61 is advantageously in a corresponding manner a blade cutting device cutting the paper web in full width, which is described in the earlier publication W09611868 of the applicant.
- the tension information of the paper web W obtained from the tension measurement member TM2 in an open nip situation and the feedback control of the center drive of the machine reel 13 that becomes possible thereby it is advantageously possible to affect the actual cutting process of the paper web W as well.
- the web tension of the paper web W in the area between the machine reel 13 and the reeling cylinder can be adjusted suitable for the cutting method used at a given time and the paper grade that is being reeled up.
- Optimal tension of the paper web W in view of the cutting depends, for example on that whether the cutting is conducted by means of a mechanical blade or a water jet. It is also possible that before the ac- tual cutting the cutting member, for example the member B2 in Fig.
- the optimal web tension for conducting the cutting can also vary. Certain paper grades, depending for example on the orientation of the fibres affecting the transversal tearing susceptibility of the paper web require a larger web tension so that they can be cut in a reliable manner. On the other hand, brittle and thin paper grades require the use of smaller web tension so that the cutting process would remain controlled.
- the tension measurement member TM2 is connected to a so- called pressing device 71.
- the pressing device 71 is a member ac- cording to prior art, for example a roll arranged rotatable or a beam or the like which does not rotate as such, but is provided with a low-friction surface material, which is used to press the surface of the machine reel 13 that is becoming full, thus preventing the slackening of the reeled-up surface layers and the access of air between said layers es- pecially when coated and/or calendered paper grades are reeled up.
- the pressing device 71 is guided to a working position against the surface of the full machine reel 13 that is about to be completed typically during the change sequence, but the pressing device 71 can also be used during the rest of the reeling process, if necessary.
- the com- bination formed by the pressing device 71 and the tension measurement member TM2 can be arranged to turn/move with respect to the center of the reeling core 12 of the machine reel 13 along the surface of the machine reel 13 when the machine reel 13 moves during the change sequence further away from the reeling cylinder 11.
- the tension measurement member TM2 is connected to a primary reeling device 81.
- the tension measurement member TM2 is connected to the primary reeling device 81 with respect to moving/turning fastening member/members 82 which, when the primary reeling device 81 turns during the change sequence, maintains/maintain the tension measurement member TM2 in the operating position with respect to the paper web W.
- the tension measurement member TM2 may be connected to the primary reeling device 81 also without the moving/turning fastening member/members 82, wherein the tension measurement can be conducted only in certain positions of the primary reeling device 81.
- the tension measurement member TM2 is used before the paper web W is cut for measuring the tension of the paper web W in the above-described manner, and after the cutting of the paper web W the tension measurement member TM2 is also used for guiding the end of the paper web on the empty reeling core 21.
- the aforementioned turnup is advantageously conducted for example by means of directional pressurized air jets, as shown in principle in Fig. 11.
- the tension measurement mem- ber TM2 is already connected to the pressurized air inlet, because pressurized air itself is used in said measurement method for example to clean off the pressure measurement holes located in a measurement beam.
- the guiding blast used for turning up the cut end of the paper web W to the reeling core 21 can be intensified further by the shaping of the beam structure or the like that functions as a tension measurement member TM2, which beam can also be transferred after the cut- ting of the web to a guiding position deviating from the position used in the actual tension measurement, if necessary, to guide the end of the web.
- the tension measurement member TM2 connected to the primary reeling device 81 and shown in principle in Figs 8 to 10 as well as the fastening member 82 of the same can be utilized in a corresponding manner to guide the end of the paper web to the reeling core 21.
- the aforementioned threading can be controlled by using pressurized air jets fixed to the fastening member 82 and/or tension measurement member TM2 and directed substantially towards the reeling core 21 , and/or by shaping the fastening member 82 and/or the tension measurement member TM2 for said purpose in an advantageous manner that complies with the shape of the periphery of the reeling core 21.
- the fastening member 82 and/or the tension measurement member TM2 can also be turned after the cutting of the paper web to a position that intensifies the threading, in which position they are utilized to force the cut end of the paper web to be better turned and guided around the reeling core 21.
- Fig. 12 also shows in a principled diagram the use of measurement data given by the tension measurement conducted according to the invention in the adjustment of reeling up in an open nip situation.
- Fig. 12 shows in a simplified manner only the most important interdependencies and feedback relations between the different parts/components and system blocks.
- the measurement variable M which is proportional to the tension of the paper web W and which is obtained from the tension measurement member TM2 is transferred to the control and adjustment system CS of the reel-up.
- the control and adjustment system CS forms at least a control and actuating variable C1 , by means of which the center drive of the reeling core 12 of the machine reel 13 is controlled to optimize the structure of the machine reel 13 that is being formed for the part of the final paper layers that are reeled up before the paper web W is cut.
- the tension measurement according to the invention can be utilized not only to affect the structure of the machine reel but also to cut the paper web W.
- control and adjustment system can be utilized further to produce a control and actuating variable C2, which variable is arranged to control the function of the cutting member B2.
- the control and adjustment system CS utilizes the tension information of the paper web W contained in the measurement variable M to produce a control and actuating vari- able C3, which variable is arranged to control the function of the pressing device 71.
- the variables C1 and C3 are arranged adjustable in such a manner that the tensioning of the surface layers of the machine reel 13 caused by the center drive (variable C1) of the reeling core 12 primarily in the direction of the tangent of the reel and the tensioning caused by the pressing device 71 (variable C3) primarily in the direction of the radius of the reel together produce the desired tight structure of the surface layers of the machine reel 13.
- the part of center drive of the reeling core 12 and the pressing device 71 in the process of tensioning the surface layers of the machine reel may vary.
- the method according to the invention can also be applied in connection with other known tension measurements than the tension measurement method described in the examples above, based on the measurement of air pressure between the paper web and a beam.
- prior art there are known mechanical methods in which the surface of the paper web is pressed with a freely rotating reel or a roll, and the tension of the paper web is defined on the basis of the relationship between the shift in the direction of said pressing movement on the path of the web and the force required therein.
- the speed of sound waves propagating in the paper web is measured, which propagation speed depends on the tension of the paper web.
- the travel of a paper web over the measurement beam is deviated by means of air blown at constant pressure via holes in the measurement beam, and the measurement holes located in the measurement beam are utilized to measure the pressure produced in the measurement holes on the basis of the distance between the paper web travelling over said beam and the beam, in other words on the basis of the tension of the paper web.
- the tension measurement can be conducted locally at two or more points in the transverse direction of the paper web. Said local measurement can be shifted in the transverse direction of the paper web to determine a measured value defining the tension of the paper web on the entire width of the paper web and/or the transverse tension profile of the paper web.
- the tension measurement can also be conducted substantially on the entire trans- verse width of the paper web at the same moment in time to define the measured value for the tension or the transverse tension profile.
- the method according to the invention can also be applied in reel-ups in which a simple reeling cylinder is replaced with a combination of a reeling cylinder and a belt, or with another mechanical solution known as such that functions in a corresponding nip-like manner.
- a simple reeling cylinder is replaced with a combination of a reeling cylinder and a belt
- another mechanical solution known as such that functions in a corresponding nip-like manner.
- modes of operation known as such, including different carrier and auxiliary roll solutions.
- the primary reeling device can also be implemented in different manners of prior art.
Landscapes
- Replacement Of Web Rolls (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10196100T DE10196100T1 (en) | 2000-06-22 | 2001-06-18 | Method and device for a change carried out when rolling up a paper web |
AU2001272569A AU2001272569A1 (en) | 2000-06-22 | 2001-06-18 | Method and device in a change in reeling up of a paper web |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20001495 | 2000-06-22 | ||
FI20001495A FI111356B (en) | 2000-06-22 | 2000-06-22 | Procedure and apparatus for replacing performed during roll-up |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001098188A1 true WO2001098188A1 (en) | 2001-12-27 |
Family
ID=8558627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2001/000575 WO2001098188A1 (en) | 2000-06-22 | 2001-06-18 | Method and device in a change in reeling up of a paper web |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU2001272569A1 (en) |
DE (1) | DE10196100T1 (en) |
FI (1) | FI111356B (en) |
WO (1) | WO2001098188A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10342020A1 (en) * | 2003-09-12 | 2005-04-07 | Voith Paper Patent Gmbh | Winding machine for winding a material web |
DE10342210A1 (en) * | 2003-09-12 | 2005-04-07 | Voith Paper Patent Gmbh | Method and device for measuring a web tension of a material web and a nip force in a nip |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1204427B (en) * | 1961-06-07 | 1965-11-04 | British Cellophane Ltd | Device for measuring the tension in a track to be guided over a curved surface provided with holes |
US3687388A (en) * | 1969-12-12 | 1972-08-29 | Beloit Corp | Measuring and controlling wound-in tension for web winding machines |
US4146187A (en) * | 1977-02-11 | 1979-03-27 | J. M. Voith Gmbh | Device for initiating wrapping of webs onto empty reels |
SE451833B (en) * | 1982-03-15 | 1987-11-02 | Kahlman Innovation Ab | PROCEDURE AND DEVICE FOR CUTTING A MUCH BAND-SHAPED MATERIAL COURT AND FORMING A MATERIAL COAT FOR A NEW INVOLVING ROLL |
-
2000
- 2000-06-22 FI FI20001495A patent/FI111356B/en not_active IP Right Cessation
-
2001
- 2001-06-18 WO PCT/FI2001/000575 patent/WO2001098188A1/en active Application Filing
- 2001-06-18 AU AU2001272569A patent/AU2001272569A1/en not_active Abandoned
- 2001-06-18 DE DE10196100T patent/DE10196100T1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1204427B (en) * | 1961-06-07 | 1965-11-04 | British Cellophane Ltd | Device for measuring the tension in a track to be guided over a curved surface provided with holes |
US3687388A (en) * | 1969-12-12 | 1972-08-29 | Beloit Corp | Measuring and controlling wound-in tension for web winding machines |
US4146187A (en) * | 1977-02-11 | 1979-03-27 | J. M. Voith Gmbh | Device for initiating wrapping of webs onto empty reels |
SE451833B (en) * | 1982-03-15 | 1987-11-02 | Kahlman Innovation Ab | PROCEDURE AND DEVICE FOR CUTTING A MUCH BAND-SHAPED MATERIAL COURT AND FORMING A MATERIAL COAT FOR A NEW INVOLVING ROLL |
Also Published As
Publication number | Publication date |
---|---|
FI20001495L (en) | 2001-12-23 |
FI111356B (en) | 2003-07-15 |
DE10196100T1 (en) | 2003-05-22 |
FI20001495A0 (en) | 2000-06-22 |
AU2001272569A1 (en) | 2002-01-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0658504B1 (en) | Method and device in reeling of a paper or board web in a drum reel-up or equivalent | |
US5782426A (en) | Method and device for reeling a paper or board web | |
EP1741648B1 (en) | A method of belt reeling and a belt reeler | |
US6474589B1 (en) | Change device of a reel-up and method for changing a roll | |
EP1135316B1 (en) | Reel-up and method for reeling of a web | |
EP0854834B1 (en) | Centerwind assist for a paper winder system | |
EP1082260B1 (en) | Method and apparatus in unwinding | |
EP1633665B1 (en) | Method in reeling up and a reel-up | |
WO2001098188A1 (en) | Method and device in a change in reeling up of a paper web | |
CN101535158B (en) | Method in a continuously operating unwind for a fibre web, in particular for a paper or board web, and a continuously operating unwind for a fibre web, in particular for a paper or board web | |
WO2007107627A1 (en) | Method in connection with a slitter-winder | |
EP1713706B1 (en) | Method in reeling up and a reel-up | |
WO2010052374A1 (en) | A method in connection with a slitter winder for a fiber web | |
US6585186B1 (en) | Method in reeling of a paper or paperboard web and reel-up for a paper or paperboard web | |
EP1107927B1 (en) | Method in sequential winding stations and production line comprising sequential winding stations |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ CZ DE DE DK DK DM DZ EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
RET | De translation (de og part 6b) |
Ref document number: 10196100 Country of ref document: DE Date of ref document: 20030522 Kind code of ref document: P |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10196100 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP |