WO2001064564A1 - Procede de deroulement d"une bobine de machine et appareil situe dans le devidoir d"une bobine de machine - Google Patents

Procede de deroulement d"une bobine de machine et appareil situe dans le devidoir d"une bobine de machine Download PDF

Info

Publication number
WO2001064564A1
WO2001064564A1 PCT/FI2001/000211 FI0100211W WO0164564A1 WO 2001064564 A1 WO2001064564 A1 WO 2001064564A1 FI 0100211 W FI0100211 W FI 0100211W WO 0164564 A1 WO0164564 A1 WO 0164564A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper roll
reel
web
paper
elongated element
Prior art date
Application number
PCT/FI2001/000211
Other languages
English (en)
Inventor
Heikki Niskanen
Original Assignee
Metso Paper, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metso Paper, Inc. filed Critical Metso Paper, Inc.
Priority to DE10195714T priority Critical patent/DE10195714T1/de
Priority to AU2001244234A priority patent/AU2001244234A1/en
Publication of WO2001064564A1 publication Critical patent/WO2001064564A1/fr

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
    • 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
    • B65H26/025—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs responsive to web breakage

Definitions

  • the invention relates to a method according to the preamble of claim 1 in the unwinding process of a machine reel.
  • paper web is unwound from machine reels to an off-machine finishing treatment of the paper web, which is a treatment separate from the actual manufacturing line of the paper web.
  • the machine reel is composed of a rotating reel spool and a paper roll reeled around the same at an earlier paper production or treatment stage, the width of which reel is several meters.
  • the finishing treatment to which the paper web is discharged from the machine reel in the unwinder, can be a treatment, in which the surface of the paper web is finished to produce a finished paper grade, such as coating in a coating machine or calendering in an off-machine calender, or a treatment in which paper is treated in another manner to produce a machine reel of higher quality, such as re-reeling in a rereeler, or slitting to form customer rolls in a slitter-winder.
  • a treatment in which the surface of the paper web is finished to produce a finished paper grade, such as coating in a coating machine or calendering in an off-machine calender, or a treatment in which paper is treated in another manner to produce a machine reel of higher quality, such as re-reeling in a rereeler, or slitting to form customer rolls in a slitter-winder.
  • a paper web is typically guided at high speeds (15 to 50 m/s) from a machine reel rotating in the unwinder to a finishing apparatus, excluding the possible stoppages and running at creeping speed, which are required by the treatment process.
  • a web break occurs, this means that when normal running speed is used, large amounts of paper web are discharged from the machine reel in an uncontrollable manner because the large machine reel cannot be stopped rapidly.
  • the masses (at present even tens of tonnes) and the diameters of machine reels are increased, especially if the web break occurs when the machine reel is relatively full, the process of stopping the reel lasts for an excessively long period of time in view of the discharge speed.
  • the invention is based on that an elongated element is tightened against the surface layer of the machine reel, said element tying the paper web tending to discharge from the reel against the reel.
  • an elongated element can be attached very rapidly on the surface of the machine reel in case of a disturbance, for example by pressing it rapidly on the surface of the reel, wherein the rotating reel at the same time winds the element around the rotating ends of the reeling core which are exposed on both sides of the reel.
  • the element is attached approximately transversely with respect to the longitudinal direction of the web on the entire width of the peripheral surface of the reel, and it travels along the rotating periphery of the reel at the same time when the element discharged for example from coils is wound around the ends of the reel spool.
  • the reel can be stopped in a controlled manner, because the process is no longer impeded by the web discharged from the reel, and reasonable braking forces can be used for stopping, which saves the brakes. Furthermore, the reel is not damaged in the controlled stopping. Moreover, the web discharged from the reel before the operation of the element is accumulated back around the reel, thus forming a kind of a loose "tail" and in the best case, not much paper remains to be cleaned off.
  • the element When preparations are made for a new threading process in the finishing apparatus, the element is cut and discharged from the necks of the reel spool.
  • Fig. 1 shows a perspective view of the apparatus in a rest position
  • Fig. 2 shows the apparatus of Fig. 1 after operation
  • Fig. 3 shows a cross-section of the feeding device for the element.
  • Fig. 1 shows an unwinding apparatus in which a machine reel R having a wound paper roll formed of a full-width web is rotated in a direction of rotation indicated by the arrow, at the same time supporting a rotating reel spool 1 forming the core of the reel on unwinding stands 2 at the location of the bearing housings that are located at the ends of said reel spool.
  • a drive (not shown) rotating the same.
  • the web W is unwound in the direction shown by the arrow from underneath the reel to a finishing apparatus, which can be a rereeler in which the unwound paper web is reeled again by means of suitable reeling parameters to form a machine reel, at the same time removing the possible defect points, a calender in which the surface of the paper web is finished by applying pressure on the web in one or more calendering nips, a coating machine, in which coating colour is spread on the surface of the paper web, or a slitter- winder, in which finished paper is cut into narrower part webs and the part webs are rewound to form customer rolls of desired width and size, which are smaller than the machine reels.
  • a finishing apparatus which can be a rereeler in which the unwound paper web is reeled again by means of suitable reeling parameters to form a machine reel, at the same time removing the possible defect points, a calender in which the surface of the paper web is finished by applying pressure on
  • the paper web to be unwound travels at constant speed for the most of the treatment process, the speed being typically at least 15 m/s, generally in the order of 15 to 50 m/s.
  • the treatment speeds can also differ from those presented above, and, in particular, it can be assumed that in the future the aforementioned upper limit will be exceeded.
  • Fig. 1 shows a guide 3 located transversely with respect to the discharge direction of the web, which guide functions as a feeding device for an elongated, flexible element 4 and it may be a groove, or the like, with a suitable cross-section.
  • the elongated element 4 that is fed to this guide 3 is a flexible, elongated element, such as a tape, cord or the like, which is made of a suitable material.
  • the location of the element 4 in the guide 3 is shown as a cross-section in Fig. 3.
  • the element 4 is a flat tape, and the open side of the C-shaped guide is narrower than the width of the tape, so that the element stays in the guide.
  • the edges of the open side can be made of a flexible material which facilitates the exit of the tape from the guide 3. It is not necessary for the element to have a flat, tape-like cross-section, but it can also be a rope-like element with an elliptic or circular cross-section.
  • the element 4 is made of cellulose-based repulpable material, i.e. it is a sufficiently strong paper tape, paper rope or the like.
  • the raw material of the element may also be plastic.
  • the element 4 is supplied from a main coil 5 which is located in one of the unwinding stands 2, via the guide 3 to an auxiliary coil 6 located at the other end of the reel, and a suitable amount of said element is accumulated thereon.
  • the auxiliary coil 6 is also attached to the unwinding stand 2 located at this end of the reel.
  • the U-shaped guide is so positioned that it lies as close as possible to the peripheral surface and edges of the full paper reel. Between the coils 5, 6 and the guide 3, in the width direction in the area between the bearing housing of the reel spool 1 and the side edge of the paper roll, i.e.
  • Fig. 1 shows a situation in which the flexible, elongated element 4 has been conveyed from the main coil 5 along the guide 3 in contact with the auxiliary coil 6, to which it has been wound by rotating the auxiliary coil 6.
  • the element 4 must be sufficiently stiff, so that it can for example be pushed along the guide to the auxiliary coil by unwinding the main coil 5.
  • the guide can be equipped with means assisting the act of conveying the element, such as air jets or mechanical conveying means.
  • the fixing devices 7 are in standby positions outside the edges of the paper roll wound on the machine reel R.
  • the guide 3 is positioned in such a manner that the web runs between said guide and the peripheral surface of the paper roll. Consequently, when the element 4 is transferred onto the periphery of the paper roll, it is at the same time capable of drawing the web discharged loosely from the reel on the surface of the reel.
  • the guide can also be located behind the detachment point of the web, for example in a situation where it is positioned down, and the web is discharged obliquely upwards from the reel.
  • the guide 3 is positioned on that side of the unwinding device to which the web W is discharged, i.e. in front of the unwinding stands 2, in which position it is easily accessible.
  • the guide 3 can also be located at another point which is appropriate in view of the operation. Typically, it is advantageous to place the guide close to the floor, wherein it can be for example attached to the floor.
  • Fig. 2 shows a situation in which the fixing devices 7 have quickly moved the element 4 closer to the axis of rotation of the reel at both ends of the reel, wherein the element simultaneously exits the guide 3 and is tightened against the peripheral surface of the rotating paper roll, binding the topmost paper layer against the paper roll.
  • a sufficient amount of the element 3 is discharged from the main coil 5 and the auxiliary coil 6 around the neck of the reel spool 1 , and thus the element is tightly attached to the paper reel.
  • the element can be allowed to break for example in such a manner that the resistance of the main coil 5 to the rotation automatically increases after a certain number of revolutions, the element running from the coil around the neck of the reel spool is tightened, and the element breaks because of the tensile stress, or against some suitably positioned blade edge.
  • the auxiliary coil 6 may be allowed to become completely empty and a corresponding function is not required therein. It is possible to arrange a special cutting device in connection with the main coil 5.
  • the element 3 is attached on top of the paper roll substantially in the axial direction, i.e. transversely with respect to the longitudinal direction or travelling direction of the web W.
  • the location is not necessarily exactly parallel to the axis of rotation of the reel spool, but the element can also travel diagonally from one edge to another, depending on the position in which it is attached on the surface of the reel, and this is dependent for instance on the placement of the fixing devices 7 and the coils 5, 6.
  • the fixing devices 7 can be pressurized medium operated actuators that produce a rapid movement, and the motion of the part hitting the element and transferring the same can be implemented as a linear movement according to the movement of the actuator, or it may be a pivotal movement by means of a lever coupled to the actuator performing a linear movement.
  • the fixing device 7 can be any actuator that generates movement.
  • a fixing device is required only on one edge of the paper roll, which fixing device moves the element 4 sufficiently tightly against the peripheral surface of the paper roll, whereafter the rotating movement of the reel pulls the element 4 off the coil and around the neck of the reel spool 1 also on the opposite edge.
  • the invention is not restricted to the embodiment described above, but it can be modified within the scope of the inventive idea presented by the claims.
  • the invention covers all apparatuses by means of which an element 4 located in a standby position transversely with respect to the travel direction of the web can be moved closer to the surface of the reel, and in contact with the surface of the reel.
  • the fixing device function can be integrated for example in coils, in which it is possible to arrange members that transfer the element, said members being able to act upon the element 4 coming from the coil.
  • the guide 3 may have a fixed position, or it can be arranged movable, wherein it can for example move in the radial direction towards the axis of rotation of the reel when the reel slowly becomes smaller, i.e. it can
  • this function can be implemented for example by arranging the radial legs of the guide to be shortened telescopically, or in another manner, and by means of the coils 5, 6, a tractive force can always be exerted on the element 4 to keep it sufficiently tight.
  • the function of the apparatus to be automatic in such a manner that the automatic monitoring of the web break gives an operation command when a web break is detected, i.e. the control means of the fixing devices that control the operation of the same are connected to the monitoring of the web break via the automatic control system of the finishing apparatus.
  • the element In connection with the threading following the web break, the element is conveyed from the main coil 5 along the guide 3 to the auxiliary coil 6, and when the finishing apparatus is again in operation, the apparatus is ready for operation for the next possible web break.
  • the invention can be utilized irrespective of that whether the paper web is discharged below or above the reel, because the element always can bind the paper reel, irrespective of the direction of rotation of the reel.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)

Abstract

Dans un procédé de déroulement d"une bobine de machine, une bande de papier (W) est déchargée d"un rouleau de papier en vue du traitement de finition du papier. En cas d"une perturbation par exemple une rupture de la bande, la bande de papier (W) déchargée du rouleau de papier est liée au moyen d"un élément allongé (4) serré contre la couche de surface du rouleau de papier. Cette invention concerne également un appareil permettant de mettre en oeuvre ce procédé.
PCT/FI2001/000211 2000-03-02 2001-03-02 Procede de deroulement d"une bobine de machine et appareil situe dans le devidoir d"une bobine de machine WO2001064564A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10195714T DE10195714T1 (de) 2000-03-02 2001-03-02 Verfahren zum Abwickeln einer Maschinenrolle und Vorrichtung in der Abwickeleinrichtung einer Maschinenrolle
AU2001244234A AU2001244234A1 (en) 2000-03-02 2001-03-02 Method in unwinding of a machine reel and apparatus in the unwinder of a machinereel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20000487 2000-03-02
FI20000487A FI108123B (fi) 2000-03-02 2000-03-02 Menetelmä konerullan aukirullauksessa ja laitteisto konerullan aukirullaimessa

Publications (1)

Publication Number Publication Date
WO2001064564A1 true WO2001064564A1 (fr) 2001-09-07

Family

ID=8557814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2001/000211 WO2001064564A1 (fr) 2000-03-02 2001-03-02 Procede de deroulement d"une bobine de machine et appareil situe dans le devidoir d"une bobine de machine

Country Status (4)

Country Link
AU (1) AU2001244234A1 (fr)
DE (1) DE10195714T1 (fr)
FI (1) FI108123B (fr)
WO (1) WO2001064564A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2164788A1 (fr) * 2007-06-21 2010-03-24 Peter A. Rodriguez Système de capture de feuille de papier déchirée

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008040818A1 (de) 2008-07-29 2010-02-04 Voith Patent Gmbh Verfahren und Vorrichtung zur Entsorgung einer Materialbahn aus einer Wickelvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437455A1 (de) * 1984-10-12 1986-04-24 Werner J. 8901 Diedorf Kotterer Vorrichtung zum verhindern eines wicklers im falle eines bahnrisses
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system
US5372290A (en) * 1992-06-25 1994-12-13 Marmin; Jean C. Apparatus for removing a running torn web of material
DE19508298A1 (de) * 1995-03-09 1996-09-12 Joh Clouth Fa Schabvorrichtung für eine Walze

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437455A1 (de) * 1984-10-12 1986-04-24 Werner J. 8901 Diedorf Kotterer Vorrichtung zum verhindern eines wicklers im falle eines bahnrisses
US4846060A (en) * 1988-07-25 1989-07-11 Iotec Manufacturing, Inc. Printing web tensioning system
US5372290A (en) * 1992-06-25 1994-12-13 Marmin; Jean C. Apparatus for removing a running torn web of material
DE19508298A1 (de) * 1995-03-09 1996-09-12 Joh Clouth Fa Schabvorrichtung für eine Walze

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2164788A1 (fr) * 2007-06-21 2010-03-24 Peter A. Rodriguez Système de capture de feuille de papier déchirée
EP2164788A4 (fr) * 2007-06-21 2011-11-16 Peter A Rodriguez Système de capture de feuille de papier déchirée

Also Published As

Publication number Publication date
FI20000487A (fi) 2001-09-03
DE10195714T1 (de) 2003-04-17
AU2001244234A1 (en) 2001-09-12
FI108123B (fi) 2001-11-30
FI20000487A0 (fi) 2000-03-02

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