FI124956B - Rolling machine and method of rolling a fiber web - Google Patents

Description

Interleaver and method for winding a fibrous web

The invention relates to fibrous web machines, such as paper and board machines, and more particularly to post-treatment of fibrous web. In particular, the invention relates to an intermediate web winding of a fibrous web and an intermediate web winding of a fibrous web. More particularly, the invention relates to an intermediate roll for winding a fibrous web according to the preamble of claim 1 and to a method for winding a fibrous web according to the preamble of claim 10.

It is known to produce a fibrous web, such as paper or board, on machines that together form a fibrous web production line that can be hundreds of meters long. Modern paper machines can produce more than 450,000 tonnes of paper per year. The speed of the paper machine is typically 1200 to 1800 m / min and the width of the paper web can be over 11 meters.

In fiber web production lines, fiber web production operates as a continuous process. A fiber web made from a fiber web machine is rolled around a reel axis, a reel spool, into a machine reel having a diameter of more than 5 meters and a weight of more than 160 tons. The purpose of the winding is to convert the planar fibrous web into a form which is easier to handle. The web of a machine roll produced in the manufacture of a fibrous web has a full width and is even more than 100 km long. With the reel located on the main machine line, the continuous process of the fiber web machine is usually interrupted for the first time and switched to intermittent operation. Thus, it is known in the prior art that fiber web machines use winders for winding a full-width web made from a machine into web rolls, so-called machine rolls. Thus, the fastener winder is a device for winding material produced as a continuous fibrous web into a machine roll. The machine reel is formed around a reel spool which acts as a winding core, i.e. a fiber web on one machine reel has a beginning and an end. In the retractors, the winding cylinder and the resulting web roll are pressed against one another by the nip force produced by the nip load. By adjusting the nip force, the aim is to keep the nip load and thus the hardness of the machine roll formed within desired limits. Prior art prior art fiber web reel rollers are known in which the fiber web roll moves horizontally to provide nip contact and maintain nip strength as desired as the web roll increases. It is also known in the art to wind up a fiber web in which, in order to provide nip contact and maintain nip force, the winding drum moves, for example, horizontally or vertically. Thus, in some retractors, nip load control is accomplished by moving the machine reel / reel cylinder as the machine roll increases.

Intermediate reels are also used in the fiber web production lines, which are intended to produce a good and continuous machine reel for the next processing step. Intermediate rollers are used for sealing if webbars have been encountered in previous steps, patching holes, cutting off edges to eliminate possible defects, and / or providing a uniform web width, joining two or more small machine rolls to provide larger machine rolls. Due to the nature of the drive, the intermediate roller may be stopped and restarted several times during rolling of the machine roller. To maintain the intermediate roller at the speed of the production line, the intermediate roller typically operates at a top speed of 2000-2500 m / min, which is significantly higher than the speed of the fiber web machine. Figures 1 and 2 show two different types of prior art intermediate rollers. The intermediate roller typically comprises an unwinding roller 20, an edge cutter 24 and a retractor 30. along which rails or the like, the reeling shafts 10 are re-used for use by the retracting roller 30. A treatment platform 26 is provided in the vicinity of the edge cutting unit 24, from which manual personnel can observe the web, perform seam, patching and other typical reel operations. As can be seen from Figures 1 and 2, intermediate rollers are typically quite high devices, where handling of the winding steps 10 requires a transfer means for transferring the winding steps from the unwinding roll to the winding stock 25 and of course also from the winding stock 25 to the rewinder. In addition, the figures show a high level of care, typically so that when performing maintenance operations such as patchwork operations, the worker will have to be in a very uncomfortable position, even hanging down! ', Making the work position extremely ergonomic.

It is an object of the invention to provide an intermediate roller in which the drawbacks described above are eliminated or at least minimized.

It is also an object of the invention to provide a spacer which does not require much space in the vertical direction.

In order to achieve the above and later objects, the spacer according to the invention is essentially characterized by what is stated in the characterizing part of claim 1.

The method according to the invention, in turn, is essentially characterized by what is stated in the characterizing part of claim 10.

According to the invention, in the intermediate reel, the winding cylinder has at least two different positions in a substantially vertical direction, of which at least one position, i.e. the winding position, is wound up. Preferably, the winding cylinder has essentially two positions, a winding position, i.e. an upright position, and an evasive position, i.e. a lower position, vertically. In the winding position, the winding cylinder is adapted to form a winding nip with the machine roll to be formed. Preferably, the evasive position is below the unwinding plane and the substantially horizontal elevation of the winding plane in the height direction so that the winding axis is movable from the winding shaft storage to the winding above the winding cylinder in the winding position.

According to a preferred embodiment of the invention, the winding is initiated with the winding cylinder in the winding position and the winding nip force is adjusted by moving the position of the machine roll by means of the machine roll transfer means, for example the machine roll transfer carriage Thus, according to the invention, the winding cylinder is stationary during winding in its upper position and the machine reel moves as the winding progresses. Of course, an alternative could be an arrangement in which the machine roll is stationary and the winding cylinder moves as the diameter increases.

According to one embodiment of the invention, the winding cylinder dodge the empty reel spool at a lower evasive position. In this case, the winding is started from the dry end side of the winding cylinder. The winding could also be started from the wet end side (web inlet side) of the winding cylinder, but in this case the winding cylinder should dodge downward during winding, thereby making the machine more complicated.

In the intermediate roller according to the invention, preferably the roller shaft stock is substantially in the same height plane as the open and close roller, preferably the roller shaft stock is substantially horizontal.

According to a preferred embodiment of the invention, the reel shaft stock is integrated in the open and retractor, thereby achieving a rapid change of the machine reel. Preferably, the roller shafts are moved within the roller shaft stock via a transfer carriage, which carriage may also be an integrated transfer carriage which also functions as a carriage carriage. Movements of the roller shafts can also be carried out by gravity, whereby the stock of the roller shafts is slightly inclined from the unwind to the reel.

The intermediate roller according to the invention is inexpensive because of its simple construction, low in height, since the stock of the reel shaft is preferably located at substantially the same level as the reel and retractor, without the need for raising and lowering the reel shafts.

Arranged in accordance with a further advantageous feature of the invention, the spooling roller of the intermediate roller reel has a high coverage angle, whereby the high speed drive is stable since the web is supported on the surface of the reeling cylinder long before the winding nip. In addition, with a large coverage angle, a good grip is achieved between the web and the winding cylinder.

According to a further advantageous feature of the invention, concrete is used in the frame structures, whereby the steel frame structures are lightweight.

The spacer roller according to the invention has excellent ergonomics, for example any holes in the web can be easily patched on either side and also on both sides of the web. According to one embodiment of the invention, for patching, the spacer roller is provided with a treatment level positioned above the post-ribbon cutting web entry below the roll axis storage in applications where the web entry is above the main floor level of the data center. According to another embodiment of the invention, a treatment area is provided at the floor level of the data room for patching, whereby the export of the web after the edge cut is positioned to pass at the patch area substantially below the main floor level of the data room. Preferably, the treatment area is delimited by suitable security fence arrangements. The intermediate roller according to the invention is also safe according to one of its advantageous applications, because the storage of the winding axes is in substantially the same horizontal plane with the open and fastening rollers, so that the winding axes need not be raised or lowered.

The invention will now be described in more detail with reference to the accompanying drawings, in which Figure 1 is a schematic representation of another prior art interleaver, Figure 2 is a schematic representation of another embodiment of the interleaver of the invention and Figure 4 is a schematic another embodiment of an intermediate rewinder according to the invention.

Unless otherwise stated, the same reference numerals are used for like parts and subassemblies in the figures.

Figures 1 and 2 show two different types of prior art intermediate rollers. The idler typically comprises an unwinder 20, an edge cutter 24 and a retractor 30. a reel shaft stock 25, along which rails or the like are re-shifted by reel shafts 30 for use with a reel reel 30. A service platform 26 is provided adjacent to the edge cutter unit 24, where manual operators can observe the web, perform seam, patching, etc. As shown in Figs.

Figure 3 is a schematic illustration of an embodiment of an intermediate rewinder according to the invention. The intermediate roller comprises an unrolling roller 20, an edge cutting unit 24 and a retracting roller 30. The machine roll 15 to be processed in the intermediate roller is transferred to the unrolling roller 20, whereby the machine roll 15 is unwound. The web W is guided from the unwinder 20 through the first guide roll 18 to the edge cutting unit 24 and further to the spreading roll 21 and through the second guide roll 28 to the winding cylinder 31 of the rewinder 30 and is wound through a winding nip between the winding cylinder and the new machine roll 15.

In the retractor 30, when the winding of the machine reel 15 is completed, the machine reel 15 is moved out of the reeling station via a transfer carriage, transfer arms or the like, and a new reeling shaft 10 is brought to the reeling station. During the shifting of the scrolling axis 10, the lowering position, indicated by a stronger line, is moved to the avoidance position in Figure 3. With the winding shaft 10 in place in the winding position, the winding cylinder 31 is moved to the winding position, in the figure the upper position indicated by the lighter line. In order to move the winding cylinder 31, a transfer carriage 32 is arranged in the example of the figure, which is arranged to move between positions by rails or similar arranged on the roller body structures 40. As the winding progresses, as the machine roll 15 grows, the machine roll 15 is moved by a trolley, transport arms or the like to adjust the nip force of the winding nip and perform the winding.

As shown in the figure, the winding cylinder 31 moves substantially in the vertical direction and has substantially two positions, the winding position and the evasive position.

The reeling shaft 10 discharged from the unwinding roller 20 is transferred to a winding shaft stock 25, along which rails or the like, the reeling shafts 10 are reused for use with a reeling roller 30. According to a preferred feature in the same vertical plane with the unwinding roller 20 and the fastening roller 30. The winding shaft 10 may be moved, for example, by a transfer carriage or the like, which may also act as a winding carriage in the reel. The reel shafts 10 may also move in the reel shaft stock 25 by gravity, whereby the rails or the like of the reel shaft stock 25 are slightly inclined in the direction from the unroller 20 to the retractor 30.

In the vicinity of the edge cutting unit 24, there is provided a treatment platform 26, from which manual personnel can observe the web, perform welding, patching, etc. typical interleaver operations.

As shown in the figure, the web W from the edge cutting unit to the spreader roll 21 and the guide roll 28 is implemented such that the spacing between the roll roll 21 and the guide roll 28 is close to the floor level 50 of the data center, for example 0-500 mm, preferably 150-300 mm. The service platform 26 fits well in the elevation area between the reel shaft stock 25 and the spreading roll 21 and the guide roll 28. In this way the service platform allows for an ergonomic working position for the worker working in the rereeler of the web, for example, the upper side of the patching operation. The underside of the web is patchable from the floor level 50 by the web entry between the guide roll 18 and the edge cut 24. Blowing tongue and support belt tapping means (not shown) may be provided to assist in threading the web W.

Fig. 4 schematically shows another embodiment of an intermediate roller according to the invention. The intermediate roller comprises an unrolling roller 20, an edge cutting unit 24 and a retracting roller 30. The machine roll 15 to be processed in the intermediate roller is transferred to the unrolling roller 20, whereby the machine roll 15 is unwound. The web W is guided from the unwinder 20 through the first guide roll 18 to the edge cutting unit 24 and further to the spreading roll 21 and through the second guide roll 28 to the winding cylinder 31 of the rewinder 30 and is wound through a winding nip between the winding cylinder and the new machine roll 15.

In the retractor 30, when the winding of the machine reel 15 is completed, the machine reel 15 is moved out of the reeling station via a transfer carriage, transfer arms or the like, and a new reeling shaft 10 is brought to the reeling station. During the shifting of the scrolling axis 10, the lowering position, indicated by a stronger line, is moved to the avoidance position in Figure 3. With the winding shaft 10 in place in the winding position, the winding cylinder 31 is moved to the winding position, in the figure the upper position indicated by the lighter line. In order to move the winding cylinder 31, a transfer carriage 32 is arranged in the example of the figure, which is arranged to move between positions by rails or similar arranged on the roller body structures 40. As the winding progresses, as the machine roll 15 grows, the machine roll 15 is moved by a trolley, transport arms or the like to adjust the nip force of the winding nip and perform the winding.

As shown in the figure, the winding cylinder 31 moves substantially in the vertical direction and has substantially two positions, a winding position and a bypass position.

The unrolled winding shaft 10 is transferred to the winding shaft stock 25, along which rails or the like, the winding shafts 10 are re-used for use by the winder 30. The winding shaft stock 25 is, according to in the vertical plane with the unwinding roller 20 and the closing roller 30. The winding shaft 10 may be moved, for example, by a transfer carriage or the like, which may also act as a winding carriage in the reel. The reel shafts 10 can also move in the reel shaft stock 25 by gravity, whereby the rails or the like of the reel shaft stock 25 are slightly inclined in the direction from the unroller 20 to the retractor 30.

In the vicinity of the edge cutting unit 24, a treatment area 27 is provided in this exemplary embodiment of the invention, from which manual personnel can observe the web, perform sealing, patching, etc. typical interleaver operations. The treatment area 27 is an area separated by security fences or the like at substantially the floor level 50 of the data center.

As shown in Figure 4, in this exemplary embodiment of the invention, the delivery of web W from the edge cutting unit 24 to the application roll 21 and guide roll 28 is implemented such that the delivery between the application roll 21 and guide roll 28 is arranged below the data center floor level 50. for threading a belt feeding device / equipment 29. Thus the management area 27 allows for very easy access to the most ergonomic position and for example, an employee working in the rereeler the upper side of the web for the repair operation. The underside of the web can be patched from the floor level 50 by the web entry between the first guide roll 18 and the edge cut 24.

3 and 4, in accordance with the invention, the intermediate winder 31 has at least two different positions in a substantially vertical direction, of which at least one position, i.e. the winding position, is wound up. Preferably, the winding cylinder 31 has two different positions, a winding position, i.e. an upright position where the winding cylinder 31 forms a winding nip with the machine roll 15 formed, and an evasive position, i.e. is movable from the winding shaft stock 25 to the retractor 30 for winding above the winding cylinder 31 with the winding cylinder 31 in an evasive position. According to a preferred embodiment of the invention, the winding cylinder 31 evades the empty winding shaft 10 in a lower position. The closed winding is then started from the dry end side of the winding cylinder 31. The winding could also be started from the wet end side of the winding cylinder, but in this case, the winding cylinder should dodge downward during winding, making the device more complicated.

Advantageously, the nip force of the winding is adjusted by adjusting the position of the machine roll 15 through the transmission means of the machine roll 15, for example by the movement of the carriage 15 or the secondary arms of the machine roll 15, depending on the machine roll transfer means used. The transport carriage may also be integrated and act as a carriage for the winding carriage and the carriage of the carriage shaft 10 in the ru II au carriage 25.

As shown in Figures 3 and 4, in the intermediate reel according to the invention, preferably, the reel shaft stock 25 is substantially in the same plane as the open and retractor 20, 30 and preferably the reel shaft stock 25 is substantially horizontal and integrated between the open and retractor 20, 30 10 is moved in the winding shaft stack 25 via a transfer carriage, which carriage may also be an integrated carriage which also functions as a carriage carriage. The displacements of the reel shafts 10 can also be performed by gravity, whereby the reel shaft stock 25 is slightly inclined from the horizontal unroller 20 to the retractor 30.

As shown in Figs. 3 and 4, the introduction of the web W from the second guide roll 28 after the roller onto the winding cylinder is preferably substantially vertical, with the winding cylinder 31 of the intermediate winder fastener 30 having an overlapping angle, i.e.

3 and 4, the intermediate roller body 40 is shown schematically. The frame 40 is preferably made of concrete and the steel frame parts to be formed as a part of the frame, such as, for example, transfer rails, are lightweight.

In the applications shown in Figs.

The invention has been described above only with reference to some advantageous embodiments thereof, and many modifications and variations are possible within the scope of the inventive idea.

References used in the drawings: 10 winding shaft 15 machine roll 18 guide roll 20 unfold roller 21 spreading roll 24 edge cutting unit 25 winding shaft storage 26 service level 27 service area 28 guide roller 30 fastener 31 winding cylinder 32 frame 40 machine room floor level W web

Claims (13)

A rolling machine for rolling a fiber web, the rolling machine comprising a reel (20), a reel shaft (25), a stretch roller (21), a reel (30), the reel (30) comprising a reel cylinder (31) for forming a roll-up nip together with the roll-up machine (15), characterized in that the roll-up cylinder (31) of the roll-up roller (30) has at least two substantially vertical positions in the roll-up machine, one of which is a roll-up position where the roll-up roll forms a roll-up roll (15) which is rolled up, and that the rewinding machine comprises an edge cutting unit (24). Rolling machine according to claim 1, characterized in that the roll-up cylinder (31) of the roll-up roller (30) has essentially two vertical positions in the roll-rolling machine, a roll-up position, ie. an upper position in the vertical direction, and a weighing position, i.e. a lower position in the vertical direction. A rewinding machine according to claim 2, characterized in that the reeling pinch force between the reeling cylinder (31) and the machine reel (15) being arranged is adapted to be adjusted by moving the position of the machine reel (15) by mediating machine reel movers. Rolling machine according to claim 1, characterized in that the roll-up shaft bearing (25) lies in substantially the same horizontal plane in vertical direction as the roll-off and roll-up roller (20, 30) in the rolling machine. The rewinding machine according to claim 4, characterized in that the reel shaft bearing (25) is integrated with the reel and reel (20, 30). Rolling machine according to Claim 4 or 5, characterized in that the roll-up shaft bearing (25) comprises a moving carriage for moving the rolling shafts (10). Rolling machine according to claim 6, characterized in that the moving carriage is an integrated moving carriage which also functions as a rolling carriage for the reel (30). A rewinding machine according to claim 1, characterized in that the rewinding machine comprises a processing platform (26) located above the web guide (W), below the reel shaft bearing (25), above the actual floor plane (50) in the machine room. 9. A rewinding machine according to claim 1, characterized in that the rewinding machine comprises a treatment area (27) on the actual floor plane of the machine room, and that the treatment area (27) is blocked with a safety fence arrangement. A method of rolling a fiber web, in which method a fiber web (W) is rolled by a rewinding machine, in which the rewinding machine is unwound the fiber web (W) with a reel (20), the fiber web is stretched with a stretch roller (21) and the fiber web ( W) with a reel (30) by mediating a reel nip between the machine reel formed and the reel bar (31) of the reel (30), characterized in that in the method the reel bar (31) is moved to a reel position and a weighing position substantially in the vertical direction, the edges of the fiber web (W) being cut into an edge cutting unit (24). Method according to claim 10, characterized in that in the method the pinch force is adjusted in the reel nip by moving the machine roller (15) during the reel-up. Method according to claim 10, characterized in that in the method the fiber web (W) unwound (W) is unwound to the reel cylinder (31) by a substantially vertical web guide. Method according to claim 10, characterized in that a manual action is performed by a worker on the fiber web, the worker standing on the treatment platform (26) or the treatment area (27).