EP0828677B1 - Winding device for taking up a paper web - Google Patents

Abstract

The invention concerns a winding device for taking up a paper web immediately after manufacture. The device comprises a carrier drum onto which the paper web is guided from one side (feed side); a winding rod with bearing journals; articulated levers which support the bearing journals in brackets and cause the winding rod with the rolled paper web to pivot around the carrier drum from a feed position into a pay-out position; a longitudinal cutter in the region of the winding-on side and upstream of the carrier drum for cutting the web into strips; a pressure roller for exerting contact pressure on the paper strips; and a support roller on the run-off side of the carrier drum in the pay-out region.

Description

The invention relates to a device for winding a paper web.

Such winding devices are known under the name Pope-Roller become. This turns the paper machine with high Speed emerging paper web wound up into a roll. The Roll has the width of the paper web, and therefore a high weight (so-called jumbo roll).

The roll is then moved from the Pope-Roller to the unwind by crane Roll slitter transferred. The slitter rewinder serves in First of all, the very wide paper web into several narrower webs divide and rewind, taking one of the resulting narrower rolls a certain, usually the highest possible winding hardness generated. Such a machine accordingly has a plurality of Cutting devices on, mostly pairs of circular knives, the circular knives on both sides the paper web are arranged and scissors-like with each other work together. It is also used to generate the Winding hardness provided a load roller.

Due to the large weight of the jumbo rolls, it occurs when wrapping on the carrying drum of the pop roller and when transporting the pop roller to the winder to certain overloads certain Layer areas, especially the edges and inner layers. This leads to winding errors in the slitter rewinder, especially those Edge slitter exiting the slitter. This creates more expensive Committee.

US-A-3 841 578 describes a winding device for winding a Paper web according to the preamble of claim 8. The device has a support drum to which the Paper web coming from one side is brought up. The The device is provided with a winding core.

GB-A-2 131 773 describes a winding device for Winding a paper web according to the preamble of claim 4, again with a support drum to which the Paper web is brought in coming from one side, further with one Winding core and with one upstream of the carrier drum Slitter for cutting the paper web into paper strips.

DE-A-1 091 856 describes a winding device for winding a Paper web according to the preamble of claim 1 with a support drum, a winding core and with Articulated levers which have forks and which also have the winding core wound paper web around the drum of one Swivel the loading position into a delivery position.

These known devices have various disadvantages. The The winding and cutting process is in need of improvement. The Devices are also sometimes complex to manufacture and user-intensive. The winding result is not optimal. personnel expenditure can be reduced. Overstretching and Wrinkles in the rolls can be avoided.

To achieve this, the inventors propose a new way. This consists essentially of using the Pope-Roller with the paper machine Combine roll slitter structurally.

The invention is explained with reference to the drawings.

Figures 1 to 6 illustrate a first concept of the invention, in called the following "Concept I".

You can see the essential elements of a winding machine with the elements according to the invention. The winding machine is not one here shown paper machine immediately downstream. It can too be a structural part of the paper making machine and for example use the same chair.

The winding device according to concept I comprises a support drum 1 to which the Paper web is brought up on one side, the so-called feed side. The paper machine would accordingly be shown to the left of the Winding device.

The carrier drum is a winding core 2, e.g. a drum, assigned to the the paper web is wound up directly. The winding core 2 has two Bearing journal on. These journals, which are not shown here, are of forks of articulated levers 11 in a manner known per se added. There is an articulated lever on each end of the carrying drum stored, in the area of its axis. The articulated lever 11 serve thus to carry the winding core 2 and - together with at least a paper roll wound on the winding core 2 in the course of their Arise - to swing around the drum 1 until one Delivery position is reached. The same applies if the winding core 2 is a Winding rod is; this is equipped with a plurality of winding tubes, in each case according to the desired width of the to be generated Role.

On the feed side is a slitter 3 for disassembling the Paper web into several strips of the desired width generating paper rolls. With a relatively narrow one The slitter only serves paper making machine if desired for cutting edge strips so that only a single roll of paper is wound up. in this case, only one core can be used as the winding core be provided at both ends by means of guide heads to be led.

Furthermore, two loading rollers, so-called rider rollers 4.1, 4.2 provided that for smooth running of the winding core 2 with it take care of the wound paper roll. The two rider rolls 4.1 and 4.2 are hung on a common device 15 and by this against the Pressable paper roll. There is a hydraulic or pneumatic system and one Control mechanism for dosing the contact pressure provided to the required To produce winding hardness. Instead of the two loading rollers 4.1, 4.2 only a single loading roller can be provided.

A support roller 5 can also be seen in the delivery area. The paper roll is lowered onto this at an advanced stage of the winding process.
A discharge table 6 can be provided in the area of the support roller 5. This can be pivoted so that it performs a protective function when the roll is not yet finished, but has a lowering and transport function when the roll is finished.

Instead of a pair of rider rolls 4.1, 4.2 with suspension and pressure function two such devices can also be provided - see FIG. 6.

The device according to FIGS. 1 to 4 works as follows:

First, the paper web that is in the direction of the arrow in the illustration from the left is introduced, passed through the cutting device 3, namely initially without winding. Accordingly, it initially runs around a large one Part of the circumference of the support drum 1 around and then falls between Carrier drum 1 and carrier roller 5 down into one Pulper. To safely guide the web, the carrying drum 1 can be used as Suction roll to be formed.

Now the winding core 2, preferably by means of a center drive, in Orbited and at the same peripheral speed as that Carrying drum 1 brought. Then it is placed on the carrying drum 1. The paper web is now wound up on the winding core. Here there there are different ways to cut the web (across to Direction) and for attaching the new web start to the winding core, e.g. on the sleeves. These methods are well known and do not have to go any further to be discribed.

Then the slitter 3 is activated as quickly as possible so that the incoming web is broken down into the desired number of paper strips becomes.

After a certain period of time, the package that consists of the Winding core 2 (possibly with center drive) with the wound paper rolls as well as from the loading rollers 4.1, 4.2 and the suspension and Press device 15 is pivoted clockwise until the Paper roll 7 rests on the support roller 5 (Fig. 2). Is the roll weight big enough that pressing by the rider rollers 4.1 and 4.2 no longer is desired, so these together with the device 15 again pivoted back into the starting position (Fig. 3). At this time the winding core 2 continues to be driven by a center drive. If required, two of these drives can be assigned to the winding core 2 are, at each end of the winding core 2, a drive. In this case, the mentioned pivoting back of the rider rollers 4.1, 4.2 executed together with a first of these two center drives. - At another variant, only a single winding core 2, e.g. drive-side center drive assigned, with the subsequent winding core 2a is coupled to a center drive on the driver's side and on it the following winding core in turn on the drive-side center drive, etc.

If the named package (4.1, 4.2, 15) is again in the waiting position - see Figure 3 -, from the side e.g. a new winding bar with sleeves on it retracted. Alternatively - before Swiveling back the package mentioned - a new winding core 2a e.g. of brought up to the waiting position. At the appropriate time - when changing rolls or after tearing off the paper web - the following can Paper web to be rewound.

3 and 4, the desired roll diameter is reached, so cut the web in the transverse direction, and - as mentioned - there is a new one Rolling onto the empty winding core 2a. At the same time, the generated Rollers 7 at a short distance from the lateral surface of the support drum 1 brought, decelerated to speed 0 and ejected. Of course there are 6 other than the support roller 5 and the discharge table Support rollers possible; e.g. 5, a support roller 5 'in the Drain table 6 to be integrated ..

It is also conceivable that the weight of the paper rolls resulting contact pressure between the paper rolls 7 on the one hand and the Carrier drum 1 and the support roller 5 on the other hand by a To reduce compressed air device 8. This conveys compressed air from below against the paper rolls 7.

Of course, the geometric relationships can be adjusted as required be changed.

Should be a single, cut paper web between the slitter 3 and the take-up point, and the cut paper web in question (Paper strips) run into the reject pulper without any problems, so decide Calculator, whether a new reel starts, or whether the running reels are finished be wrapped to minimize scrap.

The carrying drum 1 can be perforated, grooved, vacuumed. The outer surface of the Carrier drum 1 can be sprayed with metal, or for example one Have plastic cover.

Other variants:

The rotating winding core 2 can either, as shown in Figure 1, in the 12 o'clock or 0 o'clock position on the carrier drum or in any intermediate position from the 9 o'clock to the 3 o'clock position (horizontal). When wrapping in a position that differs from the 3 o'clock, it can be too at any time in the later winding position, preferably in the 3 o'clock position be pivoted. A device can be used for the winding cores Storage (magazine), and an accelerator with drive and an insertion device (vertical guide, e.g. with rails or sledges) be provided.

If the winding (similar to Fig. 14) takes place approximately at the 3 o'clock position the required winding hardness is preferably generated in that between the resulting paper roll (s) 7 and the drum 1 one certain line force is set, e.g. by means of a control device 14 for the contact pressure. This is either the winding core 2 or Carrier drum 1 or both can be moved horizontally.

When the final diameter of the paper roll (s) is reached, it can almost full winding core 2b for changing rolls, away from the carrying drum 1, be transferred to a free winding position at short notice to make room for the To create a new winding core. The drive of the Winding core 2b in free winding operation via the center drive. To im Free-winding operation can prevent air from being drawn into the paper roll e.g. the roller 5a shown in Fig. 14 serve as a squeeze roller, which then remains in contact with the large roller 7 'and travels along the entire adjustment path. This roller 5a can be pressed pneumatically or hydraulically or as e.g. Brush roller can only be set to touch the contact. The Surface of the squeeze roller 5a can be rubberized smooth or grooved as Brush, with porous and soft covers, with inflatable tube, as flexible profile roller etc. be formed.

The horizontal movement of the large roll (s) in the free-winding mode can Rails or sleds can be realized. Instead of leaving the Large roll (s) shortly before the final diameter is reached is also a move away the support drum 1 (or a pressure-controlled pressure roller) to achieve this a "change gap" conceivable (Fig. 14).

When changing reels, the web can be severed at short notice inactivated slitter 3 take place or at the same time to the longitudinally cut single tracks. The drive that is released is used for moved a new empty winding core back into the winding position or in an intermediate drive change position.

• die Aufwickelposition der Rollen ist ortsfest (z.B. 3-Uhr-Position). Eine Gewichtsentlastung erfolgt mittels Druckluft, Bänderführungen u.ä. von unten. Der Freiwickelbetrieb zum Rollenwechsel erfolgt durch Wegfahren der Tragtrommell bzw. Anpreßwalze,
• oder die Gewichtsentlastungseinheit wird beim Wegfahren der Rollen (Rolle) bzw. des Tambours mit verfahren,
• oder der Wickelkern wird ab einem bestimmten Rollengewicht mit der Tragtrommel in eine Gewichtsentlastungsposition gefahren und dort mit aktivierter Gewichtsentlastung fertiggestellt.

There are the following options for reducing the weight of the resulting paper rolls:

• the winding position of the rolls is fixed (e.g. 3 o'clock position). Weight is relieved using compressed air, belt guides, etc. from underneath. The free-winding mode for changing the rolls is carried out by moving away the support drum or pressure roller,
• or the weight relief unit is moved when the reels (reel) or reel are moved away,
• or from a certain roll weight, the winding core is moved with the carrying drum into a weight relief position and finished there with the weight relief activated.

Concept II is shown in Figures 7 to 10.

The winding device shown can in turn be a paper machine immediately downstream or even an integral structural component of a Be paper machine. Here, too, is a slitter 3 provided that the paper web coming from the paper machine into a Number of strips of the desired width disassembled.

The peculiarity of Concept II - see Figures 7 and 8 - is that at least two winding stations are provided. The feed to the individual strips cut out of the wide paper web alternating over a corresponding web transfer system 10. Es several winding stations can also be provided.

Each winding station comprises essentially the same elements. Hereinafter is only the first (shown on the left) winding station of the two Winding stations are treated in detail. You can see one again Carrier drum 1. The resulting paper rolls are used on both sides Clamping heads guided - but without drum - and by means of a Center drive driven. Again there are rider rolls provided - in the present case again two rollers 4.1, 4.2 - with associated guiding and pressing device 15.

Carrier drum 1 also has its own drive. Your outer surface can grooved again, spiral grooved, drilled, rubberized, metal-coated or smooth his. If the jacket of the drum 1 is drilled, there is a suction possible.

Air baffles are used to feed the paper strips to the carrying drums 1, Conveyor belts, blowpipes or the like.

The individual strips of paper made by slitter 3 from the wide ones Paper web leaving the paper machine will be cut out transferred "alternately" to the winding station concerned, in such a way that that each adjacent strip different winding stations be fed. From this - seen in the top view - there is a picture like this as shown in Figure 8.

The clamping heads are guided with the clamped paper rolls by means of pneumatically or hydraulically controlled cylinders. each Clamping head pair has an axial adjustment device, which a clamping or Relaxation causes.

Side plates are used to hold the control cylinders and to guide them 9 provided for each roll side - see Figures 9 and 10. Die Side shields 9 are transverse to the direction of paper travel according to the format adjustable in continuous guides. The guides serve also for receiving the device 15 (rider cylinder).

A single cylinder can be attached to each end of the resulting roll of paper be provided, but also several such cylinders.

The finished rolls are ejected in the usual way. For this, a Serve roller 5, also a lowering table 6 and possibly other roles.

The sleeve is fed in at the cylinder return. A central computer does the control.

The device works as follows: The one from a dryer section Paper machine or paper web arriving from a calender first runs through the slitter 3. Be on the winding bars pods prepared for the so-called splice and on Operating speed brought by the center drive of the rod are. When the winding sleeves are put on, the relevant web strip becomes recorded and wrapped up. This is done in the one shown in FIG Primary position (left station).

The rider rollers 4.1 and 4.2 are on; they stabilize the run and determine the winding hardness at the beginning of the winding process.

Further winding takes place in the secondary position - see that in FIG. 7 shown position of the paper roll 7. At this time a free Clamping head pair in overdrive via an automatic, not here tube loader shown returned to the primary position and is in Waiting position ready for re-use, e.g. then when the roles finished or in the event of a demolition.

When the rollers 7 are finished and are in the position shown in FIG Secondary position, the rollers are braked and placed on the lower table 6 transferred from where they are drained. The clamping heads with Control cylinders are fitted with new sleeves in the sleeve loader. The in the Waiting position (primary position) sleeves now come to Commitment.

Should a strip of paper tear, proceed as for Concept I.

Concept II has the advantage of always reproducible reeling conditions prevail so that the two-sidedness of the rollers is avoided. Very big and heavy rollers can be supported by an additional roller Supported secondary position or relieved by a compressed air device become. Of course, a peripheral force difference control is possible.

During the format change, the full width of the paper web is pre the slitter in an exclusion pulper, not shown here directed.

Another advantage of this concept is that an individual Winding hardness control at the individual winding stations is possible. It can reel of different sizes wound simultaneously become. There is also a use of cardboard sleeves and steel sleeves possible at the same time.

The pressure rollers (4.1, 4.2) are only used when winding. Figure 10 illustrates a winder with swivel part for core and Roll change for each side of the alternating paper strips.

A return of the control cylinder with the clamping heads can take place at different times. Figure 9 gives an example detect swiveled cylinder.

The rider rollers do not need the entire swivel range between To go through the primary position and secondary position. Run the paper rolls stable, so the rider rollers can be removed.

FIGS. 11 to 13 illustrate Concept III of the invention.

Two winding stations are also provided here. The feed to the individual strips cut out of the wide paper web alternately via a corresponding web transfer system 10.

Concept III works with winding stations, each with two support rollers 5.1, 5.2 exhibit.

In Concept III there are winding rods with sleeves on them intended. Alternatively, stabilized individual sleeves can also be used Use vibration damping. It can be with or without a center drive be worked.

The device works as follows:

First, the one from the left in the illustration according to FIG. 11 is brought up Paper web for a short time without using the slitter 3 to the first of the two winding stations, through which they run at operating speed runs, and from which it is fed to a committee pulper.

The slitter 3 is then activated as quickly as possible relevant paper strips are now alternately the fed to both winding stations. They enclose them Cores. The rider roll 4 will soon be put on.

Claims (8)

1. A winding apparatus for winding up a paper web

   1.1 with a support reel (1) to which the paper web is moved coming from one side (charging side);

   1.2 with a hub (2);

   1.3 with articulated levers which are provided with forks which swivel the hub (2) with bent paper web around the support reel (1) from a charging position to a delivery position;

   1.4 with a longitudinal cutter (3) for cutting the paper web into strips, which cutter is provided in the zone of the winding side and is disposed upstream of the support reel (1), characterized in that

   1.5 a support roller (5) is provided which is disposed on the discharge side of the support reel (1) in the delivery zone,

   1.6 a pair of riding rollers (4.1, 4.2) is provided for applying a pressing force on the arising paper reel (7),

   1.7 a suspension and pressing apparatus (15) is associated with the pair of riding rollers (4.1, 4.2),

   1.8 the pair of riding rollers (4.1, 4.2) and suspension and pressing apparatus (15) can be swiveled about a specific angle jointly with a hub (2) about the support reel (1).
2. A winding apparatus as claimed in claim 1, characterized in that the hub (2) is associated with a drive.
3. A winding apparatus as claimed in claim 1 or 2, characterized in that the support roller (5) is associated with a discharging table (6).
4. A winding apparatus for winding up a paper web directly after its production

   4.1 with a longitudinal cutter for cutting the paper web into strips of paper;

   4.2 with two winding stations;

   4.3 with a transfer unit for transferring strips of paper to the winding stations, with two mutually adjacent paper strips being supplied to different stations;

   4.4 with each winding station comprising:

   4.4.1 a support reel (1), characterized in that each winding station further comprises

   4.4.2 a pair of tensioning heads to which a drive is associated,

   4.4.3 a guide device for guiding the pair of tensioning heads with the forming rolls of paper (7) from a charging position around the supporting reel (1) to a delivery position, and for returning the empty pair of tensioning heads after the delivery of the completed rolls of paper (7), and

   4.5 that a pair of riding rollers (4.1, 4.2) is provided for applying a pressing force on the forming rolls of paper (7);

   4.6 the pair of riding rollers (4.1, 4.2) is associated with a suspension and pressing apparatus (15);

   4.7 the pair of riding rollers (4.1, 4.2) and the suspension and pressing apparatus (15) are swivelable over a certain angle jointly with the hub (2) about the supporting reel (1).
5. A winding apparatus as claimed in claim 4, characterized in that a supporting roller (5) is provided on the discharge side on the supporting reel (1) in the delivery zone.
6. A winding apparatus as claimed in claim 4 or 5, characterized in that a discharging table (6) is provided on the discharge side of the supporting roller (1) in the delivery zone.
7. A winding apparatus as claimed in one of the claims 1 to 6,

   7.1 with a longitudinal cutter (3) for cutting the paper web into a plurality of strips of paper;

   7.2 with two winding stations;

   7.3 with a transfer unit for transferring strips of paper to the winding stations, with two mutually adjacent paper strips being supplied to different stations;

   7.4 with each winding station comprising:

   7.4.1 two supporting rollers (5.1, 5.2);

   7.5 with a pair of riding rollers (4.1, 4.2) being provided for applying a pressing pressure on the forming rolls of paper (7);

   7.6 with a suspension and pressing apparatus (15) being associated with the pair of riding rollers (4.1, 4.2);

   7.7 with the pair of riding rollers (4.1, 4.2) and the suspension and pressing apparatus (15) being swivelable over a certain angle jointly with the hub (2) about the supporting reel (1).
8. A winding apparatus for winding a paper web directly after its production;

   8.1 with a winding station comprising the following elements:

   8.1.1 a stationary and horizontally movable support reel (1) over which the paper web runs;

   8.1.2 a hub (2);

   8.2 the hub (2) can be placed into a start-winding position disposed substantially adjacent to the support reel (1);

   8.3 a nip force can be set between the support reel (1) and the paper roll forming on the hub (2);

   8.4 the virtually full hub (2) can be moved to a free winding position, with preferably a squeeze roller being applicable on the roll of paper (7), characterized in that

   8.5 a pair of riding rollers (4.1, 4.2) is provided;

   8.6 a suspension and pressing apparatus (15) is associated with the pair of riding rollers (4.1, 4.2);

   8.7 the pair of riding rollers (4.1, 4.2) and the suspension and pressing apparatus (15) are swivelable over a certain angle jointly with the hub (2) about the supporting reel (1);

   8.8 a longitudinal cutter for cutting the paper web into a plurality of paper strips is provided.

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