EP1179630A1 - Method and device for making paper rolls - Google Patents

Abstract

To wind paper webs into rolls the actions of the calender, the longitudinal cutter and the roll winder are all on-line, without any intermediate winding stages. To wind paper webs into rolls, a narrow leader strip is formed at the start of the operation to guide the web through to the winder and onwards to a disposal unit. Where the web widens from the narrow leader strip into the full web width, the web is cut longitudinally and wound on part-roll cores. The cut webs are cut laterally, directly before winding around the roll cores. The rotation of the roll cores is accelerated to the web movement speed, before the webs are wound around them. The paper rolls are wound in a winding bed with two carrier rollers. The web is fed in for contact with the first roller, and the roll core is accelerated through contact with the second powered roller and is at a gap from the first roller. Paper rolls are wound alternately in two winding beds, in a timed sequence. The part-webs are severed after the ejection of a paper roll, to be transferred to the other winding bed which has been prepared with roll cores accelerated to the winding speed. Both winding beds have a common carrier roller, so that wound rolls are lifted from it to be taken over the second roller while the rolls are wound in the other bed. An Independent claim is included for a paper roll winding assembly with the papermaking machine (100), the calender (200), the longitudinal cutter (4) and the roll winder (1) in succession along the line of paper web travel. Preferred Features: A mobile cutter (300) is after the calender. The cutter has blades which are opened and closed by an operating mechanism, to give a free insertion path when they are open. The mobile cutter and the blade operating mechanism can be locked against each other. A disposal path (16) is after the roll winder, with a lateral cutter (20) between them. The roll winding station has winding beds (7,7') with a common carrier roller (5). The roll ejection system (10) is controlled so that the wound paper roll (3) is lifted from the common carrier roller to run off over the other carrier roller (6). The winding bed has an auxiliary mechanism to accelerate the rotation of a set of roller cores while at a gap from the common carrier roller and in contact with the other powered carrier roller.

Description

The invention relates to a method for producing Rolls of paper from a paper web, in which the paper web calendered and cut lengthways in partial webs will and the partial webs too. wound up the paper rolls become. The invention further relates to a device for the production of paper rolls with a paper machine, a calender, a slitter and a roll winder.

The manufacture of paper is known per se. In the Paper machine, pulp is poured onto a rotating sieve, can drain through the water. At the end of The paper web that forms is sieves into a dryer section convicted that allows you to exit can take a raw paper from the paper machine. In most cases, this base paper becomes one Jumbo roll rolled up. On the jumbo roll Paper web is then transported to a calender and processed and calendered there. At the end of the calender the calendered paper is again on a jumbo roll wound up and a roll cutting and winding device fed. In the roll cutting and winding device becomes the paper web that is usually with a width of up to 10 m is available on manageable Cut and cut widths in the range of 0.5 to 3.8 m Rolls of paper that have a diameter in the range from 0.5 to 2.5 m. Only such rolls of paper are later for a user, for example one Print shop manageable.

This approach is relatively time consuming, but it has the advantage that all process steps with can take place at a speed appropriate to the respective Procedure is adapted. However, this will the paper web by multiple wrapping or intermediate wrapping claimed.

The invention has for its object the manufacture of paper rolls to simplify.

This task is carried out in a method of the aforementioned Kind of solved by calendering, Slitting and winding on-line without intermediate winding he follows.

So you run the paper web out of the paper machine comes directly to a calender to close it calendering. From the exit of the calender becomes the paper web also without intermediate winding of the slitter and fed to the winding device, so that the paper rolls are generated at the same speed with the paper machine the paper web outputs. Here, the paper web is protected because only a single winding process is required. There in the meantime the paper web is not on jumbo rolls must be wrapped in between, there are considerable Set-up times for preparing the drum and for Relocation of the reel and jumbo rolls required are. After all, you save a lot of work equipment, like crane systems that are used to move the reel and the jumbo rolls are needed.

In a preferred embodiment, that you have a narrow strip at the start of manufacture the paper web into a winding device and from there to a disposal facility, this Strips then widened to the width of the paper web, then slit and the slit Partial webs then transferred to winding cores. At the beginning Basically all situations are related to manufacturing understand in which the paper web is newly "threaded" must become. This does not only occur when starting up the paper machine on, but also after a Paper web break. Introducing the paper web into the calender, the slitter and the winding device is almost impossible in full width. Therefore, you first use a narrow one Strip that you can with known means, such as Rope guides or suction belts, from the calender to the winding device leads. This narrow stripe will, however not yet wound up, but in a disposal facility passed, for example a pulper. When this narrow strip stabilizes it is widened until it reaches the width of the paper web has reached. The wide paper web will also be on Output of the winding device still disposed of. Only, when the full width paper web is in the winder the longitudinal cutting device becomes active and creates partial webs. Also the beginning of the partial lanes can still be disposed of. Only when have stabilized the partial webs, they will be on the Transfer cores transferred.

It is particularly preferred that the partial webs immediately crosswise before transferring to the winding tubes get cut. So that on all winding cores basically wound the same web lengths. The Wrapping process can be done for all paper rolls at the same time kick off.

It is preferred that the winding tubes before Transfer to path speed to be accelerated. If the partial webs cut from the paper web then come into contact with the winding tubes they attach to it with no major problems because no more relative speed between the partial webs and the winding cores prevail.

The paper rolls are preferably placed in a changing bed wound with a first and a second carrier roller, the paper web in contact with the first support roller runs in and the winding tubes during acceleration in Contact with the second idler roller that is driven will, and be kept at a distance from the first support roller. So you are able to control the speed the winding roller the second carrier roller to the same peripheral speed as the first Bring carrier roller. The first carrier roller is otherwise also driven, their drive from the Drive of the second support roller is independent. You use so the two support rollers for different purposes. The first carrier roller picks up the incoming paper web and transports them to the disposal facility, whereby the paper web if necessary with the help of a pinch roller is held on the first support roller. The second Carrier roller is used to accelerate the winding tubes. If the partial webs on the winding tubes have been transferred, then take the two support rollers back to their traditional task and support the forming paper rolls.

It is preferable to wind one after the other in time Rolls of paper alternately wrapped in two changing beds, the partial webs after the completion of a Throws through paper rolls and into the other Changing bed can be transferred, previously with winding sleeves has been loaded, which are pre-accelerated. With this one can make a continuous winding an endless one Allow paper web on different paper rolls. The paper web can be fed without interruption be and will always be in on the paper rolls one of the two changing beds wound up.

It is particularly preferred that both changing beds have a carrier roller in common, whereby the finished Paper roll lifts off this carrier roller and on the other Carrier roll of the changing bed runs out while the paper rolls are wrapped in the other changing bed. With this approach you can achieve several Benefits. On the one hand, the course of the paper web in kept essentially the same regardless of in which changing bed the paper rolls are wound. On the other hand, you can use the speed control the first carrier roller always achieve this runs at the same peripheral speed, with which runs towards the paper web. Since you have the finished paper rolls takes off from this first carrier roller and opens it up of the second carrier roller, it is also possible the first support roller for winding the next one Throws of paper rolls to use without this the finished paper rolls is hindered. The spatial Assignment of the two changing beds in close proximity to each other does not constitute a reason for the interruption of the winding process, so that the paper web still processed at the same speed can be how it comes out of the paper machine.

The invention is based on a device mentioned type in that the paper machine, the calender, the slitter and the roll winder in a continuous paper path are arranged one behind the other.

This means that the paper web can be used immediately after it is created calendered, cut lengthways and wound up without intermediate winding steps with the corresponding Paper web stress are required.

There is preferably a movable one behind the calender Cutting device arranged. This cutter is used from the paper web that the calender has passed through in full width, a narrow one Cut strips, which are then in the winder can be introduced. The remaining part of the Paper web can be disposed of. For example, he can be fed to a pulper, the rest of the paper web recycled and in the form of pulp from the paper machine supplies. The insertion of a narrow paper web strip in the winding device is much easier than introducing a wide paper web.

The longitudinal cutting device preferably has knives on that can be moved apart by an opening mechanism are and in a disassembled state one Release the entry path. The spreading of knives a slitter is known per se. It is practiced to determine the position of the rip knife to change. In the present embodiment however, the distance between the knives is chosen so large that the paper web can be passed through without being damaged. Damage is on and not critical in itself, because the paper web is only cut Condition is wound up so that the knife must have moved here. damage the paper web could lead to web breaks, however are undesirable.

The movable cutting device is preferably and the opening mechanism can be locked against each other. So it is not possible to use the knife of the slitter to move together as long as the movable Cutting device not yet full of paper Cut width. This prevents uncontrollable States occur in which the beginning of a partial web may not enter the winding device correctly arrives.

There is preferably one behind the winding device Disposal path arranged, being in front of the disposal path a cross cutting device is arranged. So long the paper web or the ones cut from it Partial webs are not yet available in a windable form, they are directed to the disposal path, the for example, have a pulper of the paper machine can. Windable partial webs are in any case not before if the narrow strip in the roll winder is transferred. Even in the period where the movable cutting device on the paper web Cuts wide, the disposal path in the winding facility needed and until the Longitudinal cutting device has come into action.

The winding device preferably has two winding beds on who have a carrier roller in common, whereby an ejector is controllable so that it the finished paper rolls from the common carrier roller takes off and runs out on the other carrier roller. In this case, the ejection device can be relatively simple be formed and have an ejection roller, so that the finished paper rolls on the second carrier roller can still rotate, this rotational movement then is braked. Once the paper rolls to a standstill have come, they will continue to be expelled and then on suitable devices, for example one Trough or a conveyor belt, from the winding device removed.

There is preferably an auxiliary device in each changing bed arranged that a set of winding tubes for pre-accelerating at a distance from the common carrier roller and in System on the other support roller stops. You can use the winding sleeves so accelerate in one changing bed, while the paper rolls are wrapped in the other changing bed become. Here, the common support roller rotate at the desired full speed, because the winding cores with it or the one running over it Paper web does not come into contact. The acceleration is rather caused by the second support roller.

Fig. 1

eine schematische Darstellung einer Vorrichtung zum Herstellen von Papierrollen und

Fig. 2

eine schematische Darstellung einer Rollenwickeleinrichtung in verschiedenen Stadien des Wickelns.

The invention is described below with reference to a preferred embodiment in connection with the drawing. Show here:

Fig. 1

is a schematic representation of a device for producing paper rolls and

Fig. 2

is a schematic representation of a roll winding device in different stages of winding.

Fig. 1 shows a device in a schematic representation for making paper rolls 3 that ultimately in a winding device 1 from a paper web 2 can be wrapped. The paper web 2 is in itself known manner in a only shown schematically Paper machine 100 is produced and then in a calender 200 calendered. In the direction of the web behind the calender the paper web 2 passes through a slitter, in which they are parallel to each other in several lying partial webs is cut. The partial lanes are then wound onto the paper rolls 3. Because it 1 is a schematic representation, is just the face of the foremost paper roll 3 recognizable. In fact, in Several paper rolls 3 wound one behind the other in the axial direction, a so-called litter.

For winding the paper rolls 3 are two changing beds 7, 7 'provided in the winding device 1, of which the right changing bed 7 is formed by a first Carrier roller 5 and a second carrier roller 6, while the left changing bed 7 'is formed by the same first one Carrier roller 5 and a further second carrier roller 6 '. The winding device 1 is with further details shown in Fig. 2.

A disposal device 16 is behind the winding device 1 arranged. In front of the disposal facility 16, which is designed, for example, as a pulper can be, a cross cutting device 20 is arranged. The cross cutting device 20 can be behind the winding device 1, but also in the winding device 1 be arranged.

The pulper is connected to the paper machine via a line 21 connected so that it is possible to cut paper web sections, which are not rewound, again the paper production supply.

In the web running direction behind the calender 200 is one movable across the direction of the paper web Cutting device 300 arranged.

To list the paper web, the paper web 2 in conventional and known per se through the calender 200 directed, for example, that one cuts narrow strips at the edge of the paper web, this strip with guide means, not shown, like ropes or the like, through the calender passes. If the narrow strip through the calender the paper web is cut to width and then runs through the calender 200 with full Width.

Similarly, at the exit of the calender With the help of the displaceable cutting device 300 narrow strip cut from paper web 2. The remaining remainder of the paper web will be in another Disposal device 22 directed, also as Pulper can be formed. That narrow strip is now passed through the slitter 4, their upper and lower knives apart for this purpose be driven so far that even with one easily vibrating paper web there is no danger that the paper web comes into contact with the knives. Here is between the slitter 4, more precisely said their opening mechanism, and the relocatable Cutting device 300 provided a lock, so that the displaceable cutting device 300 can only be moved when the slitter 4 is open.

The strip is then with not shown, but known means, such as ropes or other guidance devices, via the first Carrier roller 5 passed into the winding bed 7 and from there led into the disposal facility 16, as is also the case can be seen schematically in Fig. 2g.

Thereafter, the displaceable cutting device 300 Move transversely to the running direction of the paper web 2, see above that the narrow strip extends to the width of the Paper web enlarged. During this time the paper web by a clamping nip between an ejection roller 10 and the first support roller 5 held and pulled. All Carrier rollers 5, 6, 6 'are driven, the drives of the two second support rollers 6, 6 'independently from each other and independently of the drive of the first carrier roller 5 can be controlled.

If the paper web 2 in full width in the winding bed 7 has arrived, then the longitudinal cutting device 4 in action, i.e. the knives are moved together again, so that the paper web 2 is cut into partial webs becomes. As soon as the partial webs have arrived in the changing bed 7 are, the cross cutting device 20 operates and cuts through the partial webs at the same time total paper web width. Other separation options are basically also possible. Afterwards or at the same time the beginning of the partial web is transferred to winding cores, which are already in the changing bed 7. On these winding cores will then be the roll of paper rolls 3 wound up.

For guiding the paper web 2 between the calender 200 and the winding device are schematic guide devices 31-34 shown, formed by suction tapes can be, as for example from the company Fibron are distributed. These guide bands are able to run the paper web 2 even at higher speeds to lead reliably.

Since the paper rolls 3 only a limited length of the paper web 2 is sometimes a so-called Reel change required in the case of the partial webs be transferred to new winding cores. On such a role change is in connection with Fig. 2 described. This role change can also at full Ejection speed of the paper machine 100 take place.

Fig. 2 shows the winding device 1 for winding the Paper web 2 for a so-called throw of paper web rolls 3, which results from the fact that the paper web 2 passes through the slitter 4 in which it is cut into several partial webs. The arrows in the rollers and rollers indicate which parts are rotating.

Fig. 2a shows a state in which the paper web rolls 3 are almost finished. The paper web rolls 3 lie in the first changing bed 7.

For each winding bed 7, 7 'there is a loading roller 8, 8 'provided, with all the rollers in one not closer machine frame shown are arranged. At the respective outside of the two second support rollers 6, 6 'troughs 9, 9' are arranged, which are provided for this purpose are to record a finished roll of paper web roll 3.

Above the first support roller 5 there is an ejection roller 10 arranged, which will be described below becomes.

In each winding bed 7, 7 'there is an auxiliary device 11, 11 'arranged with a support roller 12, 12'. How from a comparison of FIG. 2a with FIG. 2b can be seen the support roller 12, 12 'in the winding bed 7, 7' be moved vertically up and down. If you like in the left half of Fig. 2a is shown, upwards has been moved, then it holds the winding tubes 13 so that the winding sleeves 13 rest on the second support roller 6 ', but keep a distance from the first support roller 5.

If the paper web rolls 3 are now almost finished then the other changing bed 7 'in conventionally supplied winding tubes 13. there rotate the first support roller 5 and the second support roller 6 the changing bed 7 at normal speed, so that the paper web rolls 3 are wound further become. The loading roller 8 is used at this stage just to make the paper web rolls pop out 3 prevent from the changing bed 7.

The winding sleeves 13 in the other winding bed 7 are pre-accelerated, by the second support roller 6 'of this winding bed 7 'is set in rotation. The load roller 8 'of this changing bed 7' is lowered and clamps the winding tubes together with the second carrier roller 6 'and the backup roller 12'. Possibly the loading roller 8 'can also be driven.

If the winding tubes 13 have the same peripheral speed like the first support roller 5, then lowered them into the winding bed 7 'by the backup roller 12 'is lowered. The winding tubes 13 then come in contact with the incoming paper web 2 and of the second support roller 6 'of the second winding bed 7'. This situation is shown in Fig. 2b. The load roller 8 'presses the winding sleeves 13 into the winding bed 7 '. The winding tubes 13 and the paper web 2 have the same speed.

As soon as this state is reached, the paper web 2 cut in the transverse direction and onto the winding tubes 13 transferred. To make this clear, the front one is Paper web roll 3 shown with a web end 14. In fact, the paper web rolls 3 rotate but continue in the direction of arrow 15 while that Winding new paper web rolls on the winding tubes 13 in the changing bed 7 'is continued.

Immediately after transferring the paper web 2 the winding tubes 13 or some time later, if the new winding rolls already have a larger diameter have assumed, as can be seen from FIG. 2d, the discharge roller 10 is lowered and, based on the Alignments in Fig. 2d, shifted to the right and until the throw of paper web rolls 3 from the first support roller 5 has been lifted off and only still on the second support roller 6 of the first winding bed 7 rests. The axes of the second carrier roller form here 6, the loading roller 8 and the ejection roller 10 Triangle in which the axis of the paper web rolls 3 located. The paper web rolls 3 are thus between three rollers 6, 8, 10 clamped and can thus be relative stable in position on the second carrier roller 6 are held. If necessary, this is the loading roller 8 also by a small distance shifted to the right.

At this point it should be mentioned that the first Carrier roller 5 and the two second carrier rollers 6, 6 'each have their own drive, the drive the second support rollers 6, 6 'act as a brake can and the drives are controlled independently can be.

As soon as the paper web rolls 3 from the first support roller 5 have been lifted off, the second support roller 6 braked. It is - and therefore also the single reel throw the paper web rolls 3 - come to a standstill, so the throw is launched in a known way. He arrives on the storage tray 9 and is from there by means of a conveyor belt, not shown axially moved out of the winding device 1.

When the paper web rolls forming on the winding tubes 13 has reached its target diameter, then takes place the same transfer process in the other winding bed 7 ', however mirror-inverted.

2a-2f has been sketched how the processes shape themselves if continuous single roles with constant dimensions are to be produced. Fig. 2g shows in addition how to proceed to change a format, i.e. the width of the from the paper web 2 cut with the help of the longitudinal cutting device 4 Partial webs.

In this case the paper web 2 is made in a known manner cut across. The discharge roller 10 now gets one additional function. It is on the first carrier roller 5 lowered and then forms with the first support roller 5 a clamping nip through which the incoming paper web 2 is further promoted. The paper web will, however no longer wound up, but passes through it Changing bed 7 in the disposal device 16, for example the pulper of a paper mill. If further running paper web 2 then the upper and lower knives the slitter 4 at a distance from each other brought, the slitting is interrupted, so that the upper and lower knives are known per se Can be repositioned. Is this happen, the slitting process is resumed. As soon as the single tracks created the Nip between the ejection roller 10 and the first support roller 5 have passed, they are across the width of the paper web 2 separated and the new starts wound on corresponding empty tubes 13.

For inserting the winding tubes into the winding beds 7, 7 ' it may be appropriate to place the winding tubes on winding rods thread or otherwise axially fix. Basically you can use the empty winding tubes 13 but also on slides or sliding levels in the winding beds Insert 7, 7 '.

Claims (14)

A process for the production of paper rolls from a paper web, in which the paper web is calendered and cut longitudinally into partial webs and the partial webs are wound up to form the paper webs, characterized in that the calendering, longitudinal cutting and winding take place online without intermediate winding. A method according to claim 1, characterized in that at the start of production, a narrow strip of the paper web is led into a winding device and from there into a disposal device, this strip is then widened to the width of the paper web, then slit and the longitudinally cut partial webs are then wound onto winding tubes leads over. Method according to claim 2, characterized in that the partial webs are cut transversely immediately before being transferred to the winding tubes. A method according to claim 2 or 3, characterized in that the winding tubes are pre-accelerated before transferring to the web speed. A method according to claim 4, characterized in that the paper rolls are wound in a winding bed with a first and a second support roller, the paper web running in contact with the first support roller and the winding tubes during acceleration in contact with the second support roller which is driven, and be kept at a distance from the first support roller. Method according to one of claims 1 to 5, characterized in that paper rolls wound one after the other are alternately wound in two winding beds, the partial webs being cut after the completion of a litter of paper rolls and transferred to the other winding bed, which was previously fitted with winding tubes that are pre-accelerated. A method according to claim 6, characterized in that both winding beds have a carrier roller in common, the finished paper rolls being lifted from this carrier roller and allowed to run out on the other carrier roller while the paper rolls are being wound in the other winding bed. Device for producing paper rolls with a paper machine, a calender, a longitudinal cutting device and a roll winding device, characterized in that the paper machine (100), the calender (200), the longitudinal cutting device (4) and the roll winding device (1) one after the other in a continuous paper web path are arranged. Apparatus according to claim 8, characterized in that a movable cutting device (300) is arranged behind the calender (200). Apparatus according to claim 8 or 9, characterized in that the longitudinal cutting device (4) has knives which can be moved apart by an opening mechanism and, in a state in which they have been moved apart, release an insertion path. Apparatus according to claim 9 or 10, characterized in that the movable cutting device (300) and the opening mechanism can be locked against one another. Device according to one of claims 8 to 11, characterized in that a disposal path (16) is arranged behind the winding device (1), a cross-cutting device (20) being arranged in front of the disposal path (16). Device according to one of claims 8 to 12, characterized in that the winding device (1, 2) has winding beds (7, 7 ') which have a carrier roller (5) in common, an ejection device (10) being controllable in such a way that it lifts the finished paper rolls (3) from the common support roller (5) and lets them run out on the other support roller (6, 6 '). Apparatus according to claim 12 or 13, characterized in that an auxiliary device (11, 11 ') is arranged in each winding bed (7, 7'), which has a set of winding tubes (13) for pre-acceleration at a distance from the common support roller (5) and the Stop on the other support roller (6, 6 ').

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