WO2010052374A1 - Procédé concernant une machine à refendre et à bobiner pour une nappe fibreuse - Google Patents

Procédé concernant une machine à refendre et à bobiner pour une nappe fibreuse Download PDF

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Publication number
WO2010052374A1
WO2010052374A1 PCT/FI2009/050901 FI2009050901W WO2010052374A1 WO 2010052374 A1 WO2010052374 A1 WO 2010052374A1 FI 2009050901 W FI2009050901 W FI 2009050901W WO 2010052374 A1 WO2010052374 A1 WO 2010052374A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
machine roll
unwinding
roll
tension
Prior art date
Application number
PCT/FI2009/050901
Other languages
English (en)
Inventor
Petri Enwald
Heikki FÖHR
Kenneth ÅKERLUND
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 DE112009002639T priority Critical patent/DE112009002639T5/de
Priority to ATA9483/2009A priority patent/AT511278B1/de
Publication of WO2010052374A1 publication Critical patent/WO2010052374A1/fr

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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
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/048—Registering, tensioning, smoothing or guiding webs longitudinally by positively actuated movable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/182—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations
    • B65H23/1825—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations and controlling web 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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • 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
    • B65H2301/413—Supporting web roll
    • B65H2301/4136—Mounting arrangements not otherwise provided for
    • B65H2301/41361—Mounting arrangements not otherwise provided for sequentially used roll supports for the same 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting

Definitions

  • the present invention relates to a method according to the preamble of patent claim 1 according to which method a web slit in the slitting section of a slitter winder into partial webs is wound into partial rolls having a certain diameter and the machine roll to be unwound in the primary unwinding station is unwound by a drive connected to the machine roll down to a certain diameter after which the machine roll is transferred from the primary unwinding station.
  • a machine roll is unwound at a slitter winder and the wide web is slit in the slitting section of the slitter winder into several narrower partial webs which are wound at the winding section around winding cores such as bobbins to form customer rolls.
  • the slitter winder is stopped and the rolls, or the so-called set, are removed from the machine. After this the process is continued in winding a new set. These stages are repeated in cycles until paper runs out from the machine roil, whereby the machine roll is replaced and the operation start over as unwinding of the new machine roll.
  • the partial web winder can be a carrier roll type winder where the partial web rolls are wound supported by carrier rolls and through a winding nip between the web roll being formed and a second carrier roll.
  • the partial roll winder can also be a center winder where the partial web roll is supported at the center and the winding takes place through the nip between the web roll being formed and the winding cylinder.
  • a drawback in this kind of an arrangement is that the additional drive provided at the service side interferes with the arrangement of the platforms needed for the service and operation personnel. Further the change of drive during the unwinding presupposes a very complicated control system and precisely operating apparatus to ensure that the tension of the wire to be unwound does not vary excessively during the drive change.
  • An object of the present invention is to provide a slitter winder and a method of using the slitter winder where the decrease of capacity caused by machine roll change is minimized and where operation dependability has been maximized.
  • the objects of the invention are achieved mainly by a method in connection with a slitter winder according to which method the web slit into partial webs at the slitting section of a slitter winder is wound into partial web rolls having a certain diameter and the machine roll being unwound is unwound in the primary unwinding station by means of a drive coupled with the machine roll down to a certain diameter and subsequently the machine roll is transferred from the primary unwinding station. It is characteristic of the invention that the tension of the web between the machine roll and the winding section is controlled during said transfer mainly by a tension control arrangement independent from the rotational position of the machine roll.
  • the machine roll Before the machine roll is transferred away from the primary unwinding station the machine roll is preferably released from the primary unwinding station and is transferred away from the primary unwinding station so that rotation of the machine roll is substantially prevented by form locking. [009] In practice the rotation is prevented by form locking by providing for example in connection with the support of the machine roll retaining members based on form locking which can be used to prevent the machine roll from rotating.
  • control of the web tension and/or length during the transfer of a machine roll by means of a tension control system independent from the rotational position of the machine roll is at least partly effected by means of the winding-up of the slitter winder.
  • drives of the winding section during the transfer of the machine roll are controlled so that the change in the length and/or tension of the web is compensated by operating the wind-up section. Then the apparatus needed is simple and it is possible to effect the control of the web length and/or tension very accurately.
  • the tension of the machine roll during the transfer is controlled at least partly by one or several web- accumulator/s.
  • the tension of the machine roll during the transfer is controlled at least partly by one or several tension confining mean/s.
  • the machine roll transfer is preferably performed at least partly during a set change whereby the tension of the web is more easily controlled.
  • the machine roll is transferred from the primary unwinding station to the secondary unwinding station preferably during the set change preceding the machine roll change.
  • the machine roll is preferably transferred from the primary unwinding station essentially in a horizontal movement to the secondary unwinding station where the final stage of the unwinding of the machine roll is performed.
  • a new machine roll is brought to the primary unwinding station and the end of the web of the new machine roll is taken to the vicinity of the splicing station while unwinding is proceeding.
  • the splicing of the web to the web of the new machine roll brought during the unwinding to the vicinity of the splicing apparatus is performed.
  • the end of the web of the new machine roll can be taken to the vicinity of the splicing apparatus essentially in full width of the web.
  • the web end can be threaded wedge- shaped whereby there are means provided in connection with the unwinding apparatus for forming the wedge in the web end, i.e. preferably an automatic wedge cutting apparatus.
  • control of the winding apparatus drives/ change in the rotational position of the customer rolls; web accumulator; tension confining means.
  • the me- thod remarkably improves the overall efficiency of the slitter winder as a minimum time is required for splicing the webs during a machine roll change.
  • the splicing is car- ried out so that, simultaneously as the webs coming from the secondary unwinding station and the primary unwinding station are joined together the unwinding is carried out at a velocity different from zero velocity. Then the splice becomes slanted in the web running direction which is a joint acceptable for further processing, i.e. a so-called commercial splice.
  • FIG. 1 illustrates schematically a web slitter winder according to an embodiment of the invention
  • Fig. 2 illustrates schematically a web slitter winder according to another preferred embodiment of the invention
  • Fig. 3 illustrates schematically a web slitter winder according to yet another preferred embodiment of the invention.
  • Fig. 4 illustrates schematically a web slitter winder according to yet another preferred embodiment of the invention.
  • Figure 1 illustrates schematically a web slitter winder 1 according to an embodiment of the invention. It comprises a winding apparatus 5 for partial webs, a slitting section 10, and an unwinding apparatus 20 for machine rolls 15 as seen from the side.
  • the unwinding apparatus 20 comprises a body 25 provided with adjacent and parallel rails 30 to support the machine rolls 15 at both ends of the unwinding shafts via bearings in the same way (only one has been illustrated).
  • the rails are essentially horizontal.
  • the unwinding apparatus comprises a primary unwinding station 35.1 and a secondary unwinding station 35.2 both of which have been provided in the embodiment of the figure with a stationary drive 36.1 , 36.2. Both the drives have a motor and a coupling member via which the motor can be coupled to the unwinding shaft of the machine roll.
  • the stationary drive here means that the drive can be coupled to the unwinding shaft only when it is in the unwinding station.
  • the winding apparatus 5 is in this embodiment a carrier roll/belt winder but it is obvious that the winding apparatus can be of any type suitable for winding partial webs. Further, the winding apparatus comprises at least one drive 5.1 , 5.2 by means of which the winding force can be directed to the rolls to be formed and thus the partial webs can be converted into partial web rolls.
  • the unwinding apparatus 20 comprises a first support and control apparatus 40.1 and a second support and control apparatus 40.2.
  • the support and control apparatus 40.1 , 40.2 engages the movement of machine roll on rails 30 so that the movement and the position of the machine roll is determined by the control apparatus 40.1 , 40.2.
  • the first support and control apparatus 40.1 has been furnished in connection with a first rail 45.1 supported on the body 25, the control apparatus 40.1 being arranged to be moved along said rail by means of an actuator 210.
  • the second support and control apparatus 40.2 has been furnished in connection with another rail (not illustrated) supported on the body 25, the control apparatus 40.2 being arranged to be moved in a corresponding way along said rail.
  • the first support and control apparatus 40.1 and the second support and control apparatus 40.2. as well as the first and the second rail have been provided on different sides of the body 25, thus the first support and control apparatus 40.1 and the second support and control apparatus 40.2 are able to bypass each other.
  • the movement range of both the support and control apparatus extends from the primary unwinding station 35.1 to the secondary unwinding station 35.2.
  • Web W is guided from the machine roll via the slitting section 10 to the winding section 5 guided by the guide rolls 70 of the web.
  • the guide rolls are preferably stationary in position.
  • a web splicing apparatus 60 has been provided in the web transfer portion between the web unwinding apparatus 20 and the slitting section 10 by means of which the webs placed side-by-side can be attached to each other and the extra portions such as web ends can be cut out.
  • the web splicing apparatus 60 may comprise one element, or two elements whereby the first element of the splicing apparatus is located on the first side of the running path of the web W and the second element on the other side.
  • the elements of the web splicing apparatus are situated at a distance from each other but for the splicing operation they are brought together, leaving the webs to be joined between the elements of the splicing apparatus.
  • the type and the operation of the splicing apparatus preferably allows connecting the webs arriving from the secondary unwinding station and the primary unwinding station to each other while the webs are moving whereby the splice becomes slanted in the web running direction.
  • the full-width web W is unwound at a slitter-winder, slit to partial webs at the slitting section 10 and partial web rolls are wound at the winding apparatus 5.
  • the unwinding is started at the primary unwinding station 35.1 and the machine roll 15 to be unwound is unwound at the primary unwinding station 35.1 down to a certain diameter after which the machine roll 15 is transferred to the secondary unwinding station 35.2 guided by a support and control means and an actuator 210.
  • the rest of the unwinding of the machine roll is carried out in the secondary unwinding station 35.2.
  • a control arrangement 200 has been provided in connection the unwinding apparatus to guide the operation of the slitter winder according to an embodiment of the invention; the arrangement is described here particularly in connection with the transfer of the machine roll 15 from the primary unwinding station 35.1 to the secondary unwinding station 35.2 as far as the actuator 210 of the support and control apparatus and the drives 5.1 , 5.2 of the winding apparatus 5 are concerned.
  • the control arrangement has a data transmission connection with the drives 5.1 and 5.2 and the actuator 210 of the support and control apparatus.
  • the machine roll has both at the primary and at the secondary unwinding station a certain rotational position ⁇ .
  • the rotational position changes constantly, thus the web is unwound from the machine roll at a certain speed.
  • the speed is also influenced by the diameter of the machine roll at that time.
  • the rotational position at the unwinding is determined by the drive coupled to the machine roll 15.
  • FIG. 1 the relatively large machine roll in the primary unwinding station 35.1 is depicted by a uniform line.
  • the machine roll 15 is transferred by means of an actuator 210 and a support and control apparatus to the secondary unwinding station 35.2.
  • the drive 36.1 of the primary unwinding station coupled to the machine roll is detached from the machine roll.
  • the tension of the web W running from the machine roll 15 to the slitting section 10 is controlled mainly by a tension control arrangement independent from the rotational position of the machine roll 15. This means that the rotation of the machine roll is not actively acted on during the transfer.
  • the tension control arrangement independent from the rotational position of the machine roll comprises a combination of the control system of the actuator 210 and at least one drive 5.1 of the winding apparatus 5.
  • the machine roll 15 is transferred away from the primary unwinding station 35.1 substantially undriven and the tension of the web W of the machine roll 15 is controlled mainly by means of the winding 5 of the slitter winder.
  • the drives of the winding section is controlled so that the while the machine roll 15 moves away from the primary unwinding station 35.1 the changing length of the web path is compensated by winding up the customer rolls 12 by means of at least one drive of the winding section 5. In this way a change in the rotational position of the customer rolls is produced by means of the drive.
  • no separate movable drive or a brake device following the machine roll is needed for the transfer of the machine roll 15.
  • the rotation of the machine roll 15 is preferably prevented during the transfer by form-locking.
  • the rotation of the machine roll 15 is prevented based on form-locking by means of a locking apparatus 36.3 in connection with the machine roll or its support and control apparatus.
  • a control arrangement 200 has been provided to control the operation of the actuator 210 and the drives 5.1 , 5.2 during the transfer as follows.
  • the machine roll 15 which has been depicted in Figure 1 in a transfer situation by a dashed line, is transferred towards the secondary unwinding station 35.2 the path of the web W running from the roll to the winding station 5 is changed.
  • the drive 5.1, 5.2 of the winding apparatus is used so that the excessive shortening of the distance is compensated by changing the length of the web from the machine roll 15 to the winding apparatus 5. This is accomplished advantageously by winding a corresponding amount of the web to partial web rolls 12.
  • the operation of the slitting section 10 continues.
  • the length of the web W running from the machine roll 15 to the slitting section 10 is controlled during the transfer of the machine roll 15 from the primary unwinding station 35.1 to the secondary unwinding station 35.2 at least partly by using the winding apparatus 5 of the slitter winder.
  • some embodiments allow taking the operation to a more advanced level by maintaining a certain web tension during the transfer of the machine roll.
  • the accuracy of the web tension control may be improved by providing the arrangement with a web tension measurement 72 which is here disposed in connection with the guide roll. Now the real value of the web tension can by used in the control of the drives of the winding apparatus 5.
  • the transfer of the machine roll comprises, due to machine geometry and the web unwinding direction, a phase in which the path of the web from the machine roll to the winding apparatus 5 at first decreases and them starts to increase during the progress of the transfer.
  • This precise phase has been illustrated with the machine roll 15 depicted with a dashed line.
  • the web unwinding from the machine roll meets the guide roll 70 on the left in the figure, which bends the path of the web while the transfer proceeds and thus extends the path of the web from the machine roll 15 to the winding apparatus.
  • the rotation direction of the winding apparatus is changed in this situation and the length of the web is increased by unwinding web from the partial web rolls.
  • the need to change the web length caused by the change in the path length typically requires winding/unwinding less than one round of the web from the finished customer rolls to compensate the change in the web path length.
  • the web length is adjusted by using the winding section 5 so that, prior to this stage, the length of the web is shortened by the amount essentially corresponding to the difference between the shortening of the web before said stage and the increasing of the length following said stage.
  • the compensation of the change preferably includes only shortening of the web length.
  • Figure 1 the position of the machine roll at secondary unwinding station 35.2 is illustrated with a dotted dashed line.
  • the distance between the stations depicted with a dashed line and a dotted dashed line increases during the transfer of the machine roll to the secondary unwinding station 35.2.
  • Figure 2 illustrates schematically a web slitter winder 1 according another embodiment of the invention. It also comprises a winding apparatus 5 for partial webs, a slitting section 10 and an unwinding apparatus 20 for machine rolls 15, as seen from the side. As for their structure and operation these correspond to the components of the slitter winder illustrated in Figure 1.
  • the drives of the primary unwinding station 35.1 and the secondary unwinding station 35.2 have been provided with a motor and a coupling, by means of which the motor may be coupled to the rotating shaft of the machine roll.
  • the web is guided from the machine roll via the slitting section 10 to the winding section 5 guided by web guide rolls 70.
  • the guide rolls are preferably stationary in position.
  • a web splicing apparatus 60 has been provided in the web transfer portion between the web unwinding apparatus 20 and the slitting section 10.
  • the full-width web W is unwound at a slitter winder according the embodiment of Figure 2, and slit to partial webs at the slitting section 10 and partial web rolls are wound at the winding apparatus 5.
  • the unwinding is performed the same way as with the unwinding apparatus of the embodiment of Figure 1.
  • the slitter has been provided with a web accumulator 7.
  • the web accumulator comprises web guide rolls by means of which the path of the web from the unwinding to the winding can be extended or decreased.
  • the accumulator comprises two rolls which have been connected to the ends of levers rotatably supported at the center.
  • FIG. 2 illustrates with a dashed line another position of the web accumulator.
  • the web accumulator may be implemented in various different ways and the arrangement may comprise several separate web batteries. Another alternative is for example parallel rows of rolls via which the web has been arranged to run in turns and the distance of which from one another is adjustable.
  • a control arrangement 200 is provided in connection with the unwinding apparatus, disposed to control the operation of the slitter winder according to an embodiment of the invention and which is here described particularly for the part of the support and control apparatus actuators 210 and the web accumulator in connection with the transfer of the machine roll 15 from the primary unwinding section 35.1 to the secondary unwinding section 35.2.
  • the control arrangement has been arranged to have data transmission and control connection with the web accumulator 7 and also with drives 5.1 and 5.2 and with the actuator 210 of the support and control apparatus.
  • the relatively large machine roll in the primary unwinding station 35.1 has been depicted by a uniform line.
  • the machine roll 15 is transferred by means of the actuator 210 and the support and control apparatus to the secondary unwinding station 35.2.
  • the drive 36.1 of the primary unwinding station coupled to the machine roll is detached from the machine roll.
  • the tension of the web W running from the machine roll 15 to the slitting section 10 is controlled at least partly by a tension control arrangement independent from the rotational position of the machine roll 15.
  • the tension control arrangement independent from the rotational position of the machine roll comprises a combination of the control system of the actuator 210 and at least the web accumulator 7.
  • the control of at least one drive of the winding apparatus 5 illustrated in Figure 1 can be used if necessary.
  • the machine roll 15 is transferred away from the primary unwinding station 35.1 substantially undriven and the tension of the web W of the machine roll 15 is controlled mainly by means of the web accumulator 7.
  • the tension of the web decreases, the length of the web in the web accumulator is increased and thus more web W is stored in the web accumulator 7, and when the web tension increases the length of the web in the web accumulator is decreased.
  • the changing length of the web during the machine roll change is compensated by turning the levers of the web accumulator.
  • no separate movable drive following the machine roll is needed for the transfer of the machine roll 15 and compensation of the change in the web length and/or tension can be taken care of in a simple and reliable way.
  • the accuracy of the web tension control may be improved by providing the arrangement with a web tension measurement 72 which is here disposed in connection with the guide roll.
  • the control of the drives of the winding apparatus 5 can use the real value of the web tension.
  • the impacts of the set ending/change are considered and the requirements of the adhesion of the web layers possibly used in the production of customer rolls.
  • the transfer of the machine roll comprises, due to machine geometry and the web unwinding direction, a phase in which the path of the web from the machine roll to the winding apparatus 5 at first decreases and them starts to increase while the transfer progresses. Then the web unwinding from the machine roll meets the guide roll 70 on the left in the figure, which bends the path of the web while the transfer proceeds and thus increases the length of the web from the machine roll 15 to the winding apparatus.
  • the web accumulator is according to the invention guided so that the length of the web path induced by the web accumulator 7 decreases.
  • Figure 3 illustrates schematically a web slitter winder 1 according to yet another embodiment of the invention. It also comprises a winding apparatus 5 for partial webs, a slitting section 10, and an unwinding apparatus 20 for machine rolls 15 as seen from the side.
  • the structure and operation of these correspond to the components of the embodiment of the slitter winder illustrated in Figure 1.
  • the drives of the primary unwinding station 35.1 and the secondary unwinding station 35.2 have been provided with a motor and a coupling, via which the motor may be coupled with the winding shaft of the machine roll.
  • Web W is guided from the machine roll via the slitting section 10 to the winding section 5 guided by the guide rolls 70 of the web.
  • a web splicing apparatus 60 has been provided in the web transfer portion between the web unwinding apparatus 20 and the slitting section 10.
  • the full-width web W is unwound and slit into partial webs at the slitting section 10 and partial web rolls are wound at the winding apparatus 5.
  • Unwinding is performed in the same way as with the unwinding apparatus of the embodiment in Figure 1.
  • the slitter winder has been equipped with a tension confining means 9 disposed preceding the slitting section 10 in the web running direction.
  • the tension confining means 9 comprises a guard at the web guide roll with which the web may be pressed against the roll and retained between the roll and the tension confining device 9. It is essential that the web cannot slide on the tension confining means.
  • the tension confining means may be steered to contact the roll whereby it is activated and off from the roll whereby it is deactivated.
  • control arrangement 200 in connection with the unwinding apparatus provided to guide the operation of the slitter winder, which is here described particularly in connection with the transfer of the machine roll 15 from the primary unwinding station 35.1 to the secondary unwinding station 35.2 as far as the actuator 210 of the support and control apparatus and the tension confining means 9 are concerned.
  • the control arrangement has a data transmission and control connection with the tension confining means 9 and the drives 5.1 and 5.2 and the actuator 210 of the support and control apparatus.
  • FIG. 3 the relatively large machine roll in the primary unwinding station 35.1 is depicted by a uniform line.
  • the machine roll 15 is transferred by means of an actuator 210 and a support and control apparatus to the secondary unwinding station 35.2. Before the transfer, the drive 36.1 of the primary unwinding station coupled to the machine roll is detached from the machine roll.
  • the tension of the web W running from the machine roll 15 to the slitting section 10 is controlled particularly at the slitting section at least partly by a tension control arrangement independent from the rotational position of the machine roll 15.
  • the tension control arrangement independent from the rotational position of the machine roll comprises a combination of the control system of the actuator 210 and the tension confining means 9.
  • the solutions described in the Figures 1 and 2 may be employed if necessary.
  • the machine roll 15 is transferred away from the primary unwinding station 35.1 substantially undriven.
  • the tension confining means 9 Prior to the start of the transfer the tension confining means 9 is activated whereby the wire portion following the tension confining means in the web running direction will maintain its tension. In this way a remarkable decrease in the wire tension particularly at the slitting section and thus the possible disturbances caused by the decreasing of the tension can be avoided.
  • the machine roll 15 is transferred from the primary unwinding station to the secondary unwinding station 35.2 and the secondary drive 36.2 is coupled to the machine roll.
  • the machine roll may now be rotated by means of the secondary drive so that the possible slackening of the web during the transfer is compensated before the deactivation of the tension confining means 9. Then a separate movable drive following the machine roll is not needed for the transfer of the machine roll 15.
  • the machine roll change is preferably performed at least partly during a set change, whereby the web slit during the machine roll change end ends up either to the bottom or the surface of a customer roll. Thus the eventual disturbances cannot cause quality problems inside a customer roll.
  • the machine roll transfer is performed during the set change preceding the last one. Then the old machine roll 15 becoming empty in the last set change is already at the secondary unwinding station 35.2 and the roll change may be performed particularly quickly.
  • Figure 4 illustrates preparation of the splicing taking place after the machine roll transfer.
  • the structure of the slitter winder of Figure 1 corresponds to that of the slitter winder in Figure 1.
  • a web transfer apparatus 100 has been provided to be moved between the primary unwinding station 35.1 and the vicinity of the web splicing apparatus 60 so that its path 105 passes the guide rolls 70 according to the running of the web W during the normal run.
  • the web transfer apparatus 100 preferably comprises a grip zone as wide as the entire web W.
  • the web transfer apparatus 100 is a roll or a corresponding member, having a perforated outer surface and connected to a vacuum source 130 and in this way a suction effect may be induced in the perforations of the outer surface of the web transfer apparatus 100.
  • the web transfer apparatus 100 is preferably a suction roll rotatably installed on bearings 110 in the shifting apparatus 120 by means of which it may be transferred along said path 105.
  • the perforation of the outer surface may extend over the whole surface of the roll or over a certain sector of it.
  • the full-width web W is unwound, and slit at the slitting section to partial webs and partial web rolls are wound at the winding apparatus.
  • the unwinding is started at the primary unwinding station 35.1 and the machine roll 15 is unwound down to a certain diameter after which the machine roll is transferred to the secondary unwinding station 35.2 where the rest of the unwinding of the machine roll is performed.
  • the preparation for the splicing may be performed very quickly.
  • Figure 4 illustrates a situation where the web transfer apparatus is beginning the transfer of the web W of the new machine roll 15 to the vicinity of the splicing apparatus 60.
  • the web transfer apparatus is in contact with the machine roll and the web end has been wound around the web transfer apparatus.
  • the arrangement may comprise also one or several air blast members directed appropriately to assist in this action. The blast may be used to detach or assist in detaching the web from the surface of the machine roll and/or in winding the web to the web transfer apparatus.
  • FIG. 4 illustrates with a dashed line the position of the web transfer apparatus, at which the new web is ready for the splicing.
  • the end of the new web is wound to the web transfer apparatus as a strip or a wedge narrower that the web width and the end of the web is taken in full width to the vicinity of the splicing apparatus.
  • the unwinding apparatus has preferably been equipped with a wedge cutting device. Subsequently the wedge is spread, simultaneously winding the spreading web wedge around the web transfer apparatus and unwinding web from the primary unwinding station until the new web has reached its full width at the splicing apparatus. This is performed while the unwinding of the old web is in progress at the secondary unwinding station.
  • the end of the new web may be wound in full width at the web transfer apparatus and the end of the web may be transferred in a strip to the vicinity of the splicing apparatus. Also this is performed while the unwinding of the old web is in progress at the secondary unwinding station.
  • the web transfer apparatus 100 stays under the web. Then the web wound to the web transfer apparatus 100 in connection with the web end transfer can be discharged out without any essential risk of the web being discharged ending up as a disturbance factor to contact the web being unwound.
  • the web transfer apparatus is preferably discharged empty while the slitter winder is running.

Landscapes

  • Replacement Of Web Rolls (AREA)

Abstract

La présente invention concerne un procédé concernant une machine à refendre et à bobiner (1) pour une nappe fibreuse, selon lequel une nappe (W), fendue dans la section de re-fendage d'une machine à refendre et à bobiner, est bobinée en rouleaux de nappe partiels ayant un certain diamètre et selon lequel le rouleau de machine (15) devant être débobiné dans le poste de dévidage primaire (35.1) est débobiné, par un organe d'entraînement (36.1) relié au rouleau de machine, jusqu'à un certain diamètre, et le rouleau de machine est transféré du poste de dévidage primaire. La tension de la nappe entre le rouleau de machine et la section de bobinage est commandée principalement au moyen d'un ensemble de commande de tension (5, 7, 9) indépendant de la position de rotation du rouleau de machine.
PCT/FI2009/050901 2008-11-10 2009-11-09 Procédé concernant une machine à refendre et à bobiner pour une nappe fibreuse WO2010052374A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112009002639T DE112009002639T5 (de) 2008-11-10 2009-11-09 Verfahren in Zusammenhang mit einer Rollenschneidmaschine für eine Faserbahn
ATA9483/2009A AT511278B1 (de) 2008-11-10 2009-11-09 Verfahren in zusammenhang mit einer rollenschneidmaschine für eine faserbahn

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20086060A FI121956B (fi) 2008-11-10 2008-11-10 Menetelmä kuiturainan pituusleikkurin yhteydessä
FI20086060 2008-11-10

Publications (1)

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WO2010052374A1 true WO2010052374A1 (fr) 2010-05-14

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Application Number Title Priority Date Filing Date
PCT/FI2009/050901 WO2010052374A1 (fr) 2008-11-10 2009-11-09 Procédé concernant une machine à refendre et à bobiner pour une nappe fibreuse

Country Status (4)

Country Link
AT (1) AT511278B1 (fr)
DE (1) DE112009002639T5 (fr)
FI (1) FI121956B (fr)
WO (1) WO2010052374A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102040115A (zh) * 2010-11-30 2011-05-04 西安新达机械有限公司 一种基材纵向分切设备的自动移动放料架的设计方法
WO2019076497A1 (fr) * 2017-10-18 2019-04-25 Voith Patent Gmbh Poste de dévidage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019111592A1 (de) * 2019-05-06 2020-11-12 Voith Patent Gmbh Materialbahnabwicklung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955737A (en) * 1974-04-08 1976-05-11 Moore Business Forms, Inc. Web feed apparatus
US4775086A (en) * 1985-08-27 1988-10-04 Hiroshi Kataoka Take-out/take-up tension control apparatus
EP0311218A1 (fr) * 1987-10-09 1989-04-12 Stork Contiweb B.V. Dispositif pour alimenter en continu à partir d'un rouleau une bande de matériau
EP0649807A2 (fr) * 1993-10-21 1995-04-26 Sumitomo Rubber Industries Limited Procédé et dispositif de bobinage d'un ruban étroit
US6007014A (en) * 1997-04-22 1999-12-28 Voith Sulzer Papiermaschinen Gmbh Winding machine
EP1163178A1 (fr) 1999-03-24 2001-12-19 Jagenberg Papiertechnik GmbH Systeme permettant de relier deux bandes de matiere
US6386477B1 (en) 1997-05-27 2002-05-14 Voith Sulzer Papiermaschinen Gmbh Station for continuous unwinding of a material web

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697755A (en) * 1984-08-27 1987-10-06 Hiroshi Kataoka Rewinder with slitter
DE102005028334B4 (de) * 2005-06-18 2007-09-13 Koenig & Bauer Aktiengesellschaft Verfahren zur Regelung der Bahnspannung
DE102005000187A1 (de) * 2005-12-16 2007-06-21 Voith Patent Gmbh Vorrichtung und Verfahren zum Abwickeln einer Materialbahn

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955737A (en) * 1974-04-08 1976-05-11 Moore Business Forms, Inc. Web feed apparatus
US4775086A (en) * 1985-08-27 1988-10-04 Hiroshi Kataoka Take-out/take-up tension control apparatus
EP0311218A1 (fr) * 1987-10-09 1989-04-12 Stork Contiweb B.V. Dispositif pour alimenter en continu à partir d'un rouleau une bande de matériau
EP0649807A2 (fr) * 1993-10-21 1995-04-26 Sumitomo Rubber Industries Limited Procédé et dispositif de bobinage d'un ruban étroit
US6007014A (en) * 1997-04-22 1999-12-28 Voith Sulzer Papiermaschinen Gmbh Winding machine
US6386477B1 (en) 1997-05-27 2002-05-14 Voith Sulzer Papiermaschinen Gmbh Station for continuous unwinding of a material web
EP1163178A1 (fr) 1999-03-24 2001-12-19 Jagenberg Papiertechnik GmbH Systeme permettant de relier deux bandes de matiere

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102040115A (zh) * 2010-11-30 2011-05-04 西安新达机械有限公司 一种基材纵向分切设备的自动移动放料架的设计方法
CN102040115B (zh) * 2010-11-30 2016-09-28 西安新达机械有限公司 一种基材纵向分切设备的自动移动放料架的设计方法
WO2019076497A1 (fr) * 2017-10-18 2019-04-25 Voith Patent Gmbh Poste de dévidage

Also Published As

Publication number Publication date
FI121956B (fi) 2011-06-30
FI20086060A (fi) 2010-05-11
FI20086060A0 (fi) 2008-11-10
DE112009002639T5 (de) 2012-05-16
AT511278A1 (de) 2012-10-15
AT511278B1 (de) 2013-01-15

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