EP2184243B1 - Method for winding material web and device for executing the method - Google Patents

Description

The invention relates to a method for winding material webs, in which a material web unwound from a mother roll, cut in a cutting section in its longitudinal direction in partial webs and wound up again in a retractor, being provided for winding the partial webs individual winding stations formed from winding blocks.

The invention will be described below with reference to a paper web as an example of a material web. However, it is also applicable to other webs that can be handled in a similar manner. As an example of a winding device is used in the sequence of a slitter, in particular a back-up roll slitter, to which the invention is particularly advantageously applicable.

In order to make the production process of paper production as efficient as possible, efforts are being made to produce paper webs as wide as possible at the highest possible speed.

The resulting paper webs are wound up for further processing or transport on empty reeds and then often called full reels or mother rolls, which currently usually reach lengths of up to 10.5 m, diameter of over 4 m and weights of up to 170 tons. For some finishing processes, but especially for transport outside the home such large and heavy roles are too unwieldy and must therefore in the longitudinal direction of Cut paper web and then on narrower roles, so-called partial web rolls or finished rolls, are wound up again.

This task is usually accomplished by so-called slitter-cutting machines, which essentially consist of a unwinding device, a cutting section and a roll-up device, wherein the cutting section has a number of disk-shaped cutters adapted to the possible pitches.

In the backup roll-type rotary cutting machine, each individual roll to be wound is wound in a separate winding station around a winding tube in the retractor according to the prior art. The Teilbahn- or finished rolls are supported during the winding process on a support roller or are at this. Depending on the design, however, it is also possible to use more, in particular two, back-up rolls, which in various cases can also be supplemented by support rolls or pressure rolls.

Accordingly, a method according to the preamble of claim 1 and a device according to the preamble of claim 8 in US Pat. No. 5,620,151 disclosed.

As winding stations those places are defined at which a winding takes place. According to the prior art, winding stations consist of two winding blocks. Basis of a winding frame forms a base frame which is movable transversely to the paper web on a rail or carriage system and at its upper end a guide rail is formed on which a guide carriage can move in the running direction of the paper web. The guide carriage receives a rotatably mounted end winding, which engages the winding in the sleeve and is driven by a gear via a motor. Since this motor drives the winding of the partial web roll from its center, it is usually referred to as a center drive, but may also be generally called drive or winding motor.

There are also peripheral drives, in particular Reibrad- or friction roller drives, known to drive a stored in a frame wheel / roller, which rests on the circumference of the winding and the partial web wound on its peripheral surface via friction. Since here, however, the friction wheel or the friction roller is driven in a similar manner by winding motors provided, the statements made in connection with the center drives apply mutatis mutandis to this winding principle. Likewise, the statements made above apply mutatis mutandis, if the Wickelböcke not based on a base, but are mounted on a, arranged on the support roller, Traverse.

If the cut rolls, seen transversely to the paper web, issued to two sides of the support roller, the desired formats on the one hand freely selectable, on the other side dependent.

In this way, the operator of a backup roll slitter is able to produce rolls of different format and different winding hardness in a high quality during a single process.

If the operator wants to cut large formats, that is, wide partial web rolls, the unused winding stations of the prior art are extended laterally out of the machine into a so-called winding station or remain unused in an intermediate position within the production space.
According to the prior art, therefore, only so many winding stations are in use, as required by the desired number of partial web rolls. The winding station must therefore be able to do the desired Were still required until a few years ago, for example, in rotogravure, finished rolls with standard widths of about 2.2 m in large quantities, these are today, due to more efficient printing presses, more and more of so-called jumbo-finished rolls, ie sub-web rolls with a width displaced by about 4.3 m.

Wrapping machines already in use are, however, largely unable to cope with the increased demand for wider subrail rolls. The main limiting factor is the torque that can be introduced into the sleeves at the winding stations by the winding motors. By contrast, the winding stations designed for continuous load would usually also be able to cope with the then increased mechanical demands or could be adapted with little effort.

Even with new designs, the dimensioning of the individual winding blocks done in pairs as a compromise between size and performance, as the space occupied by the winding frame, as already described above, the minimum cutting width determined on the opposite output side and the space required by the drive largely determines the size of the winding frame. For this reason, in practice, the machines are often configured so that there is only one winding station per output side, which is suitable for producing relatively wide partial web rolls. This winding station is particularly expensive and is driven for the reasons mentioned often at its load limit. As a result, increased wear and thus increased maintenance costs occur here.

From the US 2,984,427 A1 In contrast to the prior art just described, a slitter-winder is known which forms only one single winding station on each side of a support roller. within which several on a winding rod loosely juxtaposed ready roll are formed.

Object of the present invention is to increase the universality of a winding process, in particular a cutting winding process by more efficient use of existing potentials while optimizing the cost and life of the units used and to reduce the risk of expensive production losses.

These objects are achieved by the method according to the invention in that at least one drive (21) of a first winding station (14.1) drives, co-drives or alternatively drives at least one second winding station (14.2).

The term "drive" is understood to mean the case where a winding station drives an adjacent station while the station's own drive is switched off or no drive is provided at the station.
The "co-driving" case summarizes the main scope of the present invention. Co-driving means that more than two winding blocks, in particular at least two winding stations, jointly accomplish the winding of a, in particular wide, partial web roll format.
The third phrase "driving as an alternative" means that a winding station drives an adjacent winding station whose drive is defective or out of operation.

According to the invention, therefore, at least one winding station is additionally or exclusively driven by at least one drive of at least one second winding station.

An improved method in this way allows a hitherto unknown design freedom in the distribution of a parent roll in sub-web roles, since the previously established relationship between Number of rolls to be wrapped and number of wreaths in use of w = 2xn (with w = rollerbacks and n = finished rolls). In this way, for example, despite the possibility of producing even very wide partial web rolls, the minimum possible partial web roll width remains very small. In addition, the extra strong design of individual winding stations can be dispensed with. Rather, with the same design of the individual winding stations can be produced by the inventive features partial web rolls that would exceed the power capacity of a single same-sized winding station.

In this way, results in the production of the machine is a significant cost advantage, as can be dispensed with expensive special custom extra-sized winding stations. Also simplifies because of the same design of spare parts to be stored the availability while reducing storage costs.

An inventive method also offers two major approaches to reducing expensive production loss. On the one hand, the service lives are significantly increased by avoiding peak loads at individual stations, on the other hand, the auxiliary drive is provided by adjacent stations for the fault case of individual winding stations.

The increase in the service life of the individual winding stations has an additional effect by reducing the maintenance costs.

In this case, a method according to the invention can advantageously provide that the drive power in the transverse direction of the material web can be retrieved from both sides of at least one of the winding blocks required for the formation of a winding station. That means the performance Both can be dispensed either on one side or the other, but it is also possible to simultaneously retrieve on both sides a, in particular the respectively required winding load adapted, power component. In this way, the universality of the inventive concept is increased again, since it solves so particularly well on the pairwise binding of the Wickelböcke and thus the minimum width of the resulting on the opposite side partial web role very easy, ie without costly maneuvering or bridging measures, very can keep small. On the other hand, there is the possibility of intermediate winding stations without their own drive, which can thus be particularly narrow and inexpensive. The latter can then be of great advantage if the method is intended to wind a particularly large number of narrow partial web rolls. In addition, a, a failed combination of desired sub-web widths expectant, positioning of the winding stations or the individual Wickelböcke uncomplicated and quickly possible.

A method according to the invention can generate or increase the drive torques of the winding motors required for winding up the partial webs, in particular via coupled gear or shaft couplings.
Thus, in a simple, reliable and cost-effective manner, the use of self-propelled winding stations is made possible or provided an optional support to self-sufficient winding station.

In this context, relief and centering devices, in particular centering pins, can be used particularly advantageously, which on the one hand ensure exact positioning of said functional elements and, on the other hand, for absorbing transverse forces occurring, in particular by the weight of the device itself Drives that are suitable. An independent centering creates a basic prerequisite for the automation of the coupling process, which, incidentally, also considerably simplifies a possible manual operation. The associated relief of the waves with respect to dangerous lateral forces the smoothness of the winding process in the coupled state, and the life of the bearings and gear parts are significantly increased.

It is conceivable that the winding blocks of the adjacent winding stations are driven together, so that the proposed functional elements for coupling the gear or the waves can directly interact with each other. Such a variant is above all the desire for the smallest possible minimum section width of the opposite part of the track and is particularly preferred in the present process.

If the winding stations are to be driven together to drive transmission, positive or frictional couplings are possible. In the automatic positioning of the winding stations or the individual winding blocks, a coupling part is slowly set by the drive located on its winding block drive in rotation, while approaching the two coupling parts. A frictionally engaged clutch will then independently turn the other side when sufficient static friction is achieved. Depending on your wishes, the second drive can also be switched on.
If a form-fitting coupling, such as a dog clutch, is used, the functional surfaces can, after slow rotation, engage in a corresponding position and thus produce the drive transmission.

In contrast, a method can also be configured advantageously if it optionally also provides transmission elements for indirect drive transmission. In this case, the transmission members may be rigid or have joints to avoid, as in the aforementioned case, the transmission of transverse loads. Such a variant may for example be preferred if an existing winding method is to be redesigned according to inventive features and the winding stations of the device for performing the method structurally unsuitable, directly contact each other, or a conversion or retrofitting is required with the least possible effort , If transmission elements are used, the process, with the exception of the intermediate switching of the transmission elements, can in principle be similar to the procedure described above.

In both cases, the method is particularly advantageous when the coupling process on the transmission or shaft coupling can be partially or fully automatically controlled.
For this purpose, control devices that are informed via sensors are advantageously provided for controlling the coupling sequence.
This can lead to considerable cost and time savings. In addition, risky personnel work and sources of error are largely avoided.

In a further variant of the method, the winding heads are adapted to receive different tube diameters at at least one winding station and can in particular be changed, exchanged, displaced, turned, turned over or their diameter changed. In this way, the roll width and the weight adapted sleeve diameter can be used.

According to the invention, the objects of the invention are achieved in that at least one second winding station is drivable by at least one drive of a first winding station, mitantreibar or auxiliary drive.

A device equipped with inventive features is thus characterized by the coupled power of at least two winding stations.

Such a designed device for winding webs of material is universally applicable to an unknown degree, offers Angleichungspotential for future market developments and long life, since their drives can be operated more often in the partial load range. In addition, the risk of a complete shutdown of the device significantly reduced, since the device is still usable in case of failure of individual winding stations. When used, especially in terms of their performance uniformly designed winding stations, additionally reduce manufacturing and replacement storage costs.

In an advantageous embodiment, a device according to the invention can provide that the drive power can be called up from both sides of at least one of the winding blocks required for the formation of a winding station.
In this way, in addition to generating or increasing required drive torques at adjacent winding stations, it is also possible to achieve an equal or unequal division of the drive potentials present on individual winding blocks. Thus, the minimum width of the non-edge layer winding stations can be significantly reduced. This can be particularly advantageous if the method is intended to wind a particularly large number of narrow partial web rolls. In addition, one, one failed combination of desired sub-web widths becoming fair, positioning the winding stations or the individual Wickelböcke uncomplicated and quickly implemented.

• Durchstellen einseitig eingebrachter Antriebsmomente bzw. Antriebsleistungen,
• Synchronisierung zweier Antriebsmomente bzw. Antriebsleistungen,
• einseitige Ausgabe kombinierter Antriebsmomente bzw. Antriebsleistungen.

Dazu können auch Ausgleichsgetriebe vorgesehen sein. Auch sind übersetzende Getriebeelemente denkbar.Furthermore, it is advantageous if the drive torques of the winding motors required for winding up the partial webs can be generated or increased with each other in particular via coupled transmission or shaft couplings. For this purpose, the respective drives can be designed to be switchable in series or in parallel, wherein a series-connected arrangement is preferred. It is particularly advantageous if the gear or shaft couplings meet at least one of the stated requirements:

• Passing unilaterally introduced drive torques or drive powers,
• Synchronization of two drive torques or drive powers,
• one-sided output of combined drive torques or drive powers.

For this purpose, it is also possible to provide differential gears. Also translating gear elements are conceivable.

Further, it is advantageous if at least two winding blocks with the aid of at least one relief and positioning means are positioned to each other and / or releasably connectable. For this purpose, centering bolts, which can be introduced into corresponding bores of an adjacent winding block, are particularly suitable. Such compounds are self-centering, so provide some compensation for possible tolerances, are robust and inexpensive to produce. In addition, they are well suited to absorb lateral forces, in particular by the weight of the drives, or the gear or shaft couplings, and thus to relieve these functional elements. For this purpose, it is conceivable that the centering pins are movable along their axis are arranged. Thus, the centering can be retracted and extended in the winding frame, especially in the undercarriage of the winding frame, stored. The associated relief of the waves with respect to said lateral forces the smoothness of the winding process in the coupled state and the life of the bearings and gear parts are significantly increased.
By an independent centering beyond a basic requirement for the automation of the coupling process is created, which also greatly simplifies a possible manual procedure, moreover.

For this purpose, it is also advantageous if the winding stations, in particular the winding blocks, can be moved to one another for this purpose. As a result, one, formed of the operatively connected individual winding blocks, unit is particularly compact and thus allows low minimum section widths of the opposite partial webs. In addition, the functional elements which are in operative connection with one another, in particular the transmission and coupling elements, are particularly well shielded. Directly movable together Wickelböcke also offer the advantage that they are when preparing the desired pattern, ie the desired distribution of the web in sub-webs of the same or different widths, no preparatory work to be done because the adjacent Wickelböcke easily be brought into operative connection, d. H. in particular be coupled and disengaged.

In contrast, it may occasionally also be advantageous if the winding stations remain spaced to fulfill the purpose of the invention and the power transmission by means of intermediate functional elements, in particular transmission or articulated rods is vornehmbar. In this case, acting as transfer elements, inter-switchable functional elements be rigid or have joints to avoid, as in the aforementioned case, the transmission of transverse loads. Such an embodiment may be preferred, for example, when an already in operation device for winding webs, in particular a slitter, is to be redesigned according to inventive features and the winding stations of the device for performing the method structurally for direct contact are inappropriate or an order - Or retrofitting is required with the least possible effort. If transmission elements are used, the process, with the exception of the intermediate switching of the transmission elements, can in principle be similar to the procedure described above.

It is of great advantage if the gear or shaft coupling, as a respective interface between the operatively engageable winding blocks, partially or fully automatically switched on and disengaged. For this purpose, control devices that are informed via sensors are advantageously provided for controlling the coupling sequence. Likewise, an imaging monitoring device is conceivable.
This can lead to considerable cost and time savings. In addition, risky personnel work and sources of error are largely avoided.

It is particularly advantageous if the device can be retrofitted.
Thus, already in use winding machines, which were designed for example on the above-described former standard partial web width for rotogravure of 2.2 m, by simple retrofit measures meet the requirements of the new sub-web widths of 4.3 m.
It is also conceivable that an older machine used after a conversion for winding particularly small partial web widths shall be. It is conceivable, for example, that the additionally required winding stations equipped for economic reasons without their own drives, and seen transversely to the web direction, the existing winding stations are interposed. The existing drives can then simultaneously drive their neighboring winding frame.

Further features and advantages of the invention will become apparent from the dependent claims, the description and the drawings.

• Fig.1: verdeutlicht beispielhaft den schematisiert vereinfachten Grundaufbau einer Stützwalzenrollenschneidmaschine
• Fig.2: zeigt ein erstes Beispiel zur erfinderischen Anordnung der Wickelböcke bzw. Wickelstationen. Insbesondere kann es sich dabei um eine umgerüstete Vorrichtung zur Wicklung breiter Fertigrollen handeln.
• Fig.3: zeigt ein zweites Beispiel zur erfinderischen Anordnung der Wickelböcke bzw. Wickelstationen. In einer sehr universell einzusetzenden Vorrichtung ist hier eine Anordnung zum Wickeln vieler schmaler Fertigrollen dargestellt.
• Fig.4: zeigt ein drittes Beispiel zur erfinderischen Anordnung der Wickelböcke bzw. Wickelstationen. In einer sehr universell einzusetzenden Vorrichtung ist hier eine Anordnung zum Wickeln sehr unterschiedlicher Fertigrollenbreiten dargestellt.

The solution according to the invention is explained below with reference to figures. It details the following:

• Fig.1 : illustrates an example of the schematically simplified basic structure of a backup roll cutting machine
• Fig.2 : shows a first example of the inventive arrangement of the winding frames or winding stations. In particular, it may be a converted device for winding wide finished rolls.
• Figure 3 : shows a second example of the inventive arrangement of the winding blocks or winding stations. In a device for universal use, an arrangement for winding many narrow finished rolls is shown here.
• Figure 4 : shows a third example of the inventive arrangement of the winding frames or winding stations. In a device for universal use, an arrangement for winding very different finished roll widths is shown here.

The FIG. 1 illustrates in schematic simplified representation of the structure and function of a retractor (5) for winding a, in a cutting section (3) in partial webs (9) cut, material web (8) on separate cores (10), to form so-called partial web rolls (11) in a back-up roller slitter (1) after unwinding the web (8) from a master roll (7). In this case, the widths of the partial webs (9) can be predefined so that it is also possible to completely wrap the material web (8) without cutting or only by making an edge trimming.

For clarification, a coordinate system is applied in this figure, wherein the machine direction, ie the longitudinal direction of the material web (8), moves on the X-axis. For this purpose, the Y-axis extends perpendicularly, which corresponds to the transverse direction, that is to say the width of the material web (8). Accordingly, also follow the longitudinal axes of the unwinding and winding device (2 and 5), as well as the Tambour (6 or 7) or sleeves (10), this course. The height is described by the Z-direction, which is perpendicular to a plane defined by the two aforementioned axes.

Such a back-up roll cutting device (1) is characterized in that the material web (8) previously wound on a master roll (7) is unwound in an unwinding device (2) and passed through a cutting section (3). In the cutting section (3), the material web (8) is cut by longitudinal cutting into partial webs (9). The partial web width (9) to be produced can be previously determined by positioning the individual cutting devices (4) along the transverse direction (Y). For this purpose, one of the desired number of the part webs (9) to be produced adapted number of cutting devices (4) must be present. Conceivable are versions with rotating or resting on the material web (8) engageable separating elements. The separating elements (4) are conventionally circular knives with upper and lower knives.
The back-up roller slitter (1) also has, in the image plane of FIG. 1 , Unrecognizable system on which the knives can be positioned across the paper web, ie in the Y direction selectable and which offers the opportunity, case by case surplus knife (4) to move into a rest position. Furthermore, the system has an unillustrated, controllable positioning system, which can preferably work in coordination with a positioning system of the winding blocks (15).

In the machine direction (X), a device, not shown here, for separating and feeding the individual partial webs (9) into individual winding stations (14.1, 14.2,... 14) aligned in the Y direction can be attached to the cutting section (3) in the usual way .n). Frequently, so-called spreader devices or roller scrapers are used.

In the backup roll-type rotary cutting machine (1), according to the prior art, in the roll-up device (5), each individual finished roll (11) to be wound is wound around a winding tube (10) in its own winding station (14.1, 14.2, ..., 14.n). wound. The Teilbahn- or finished rolls (11) are based during the winding process on a support roller (12) or are applied to this. Depending on the design, however, it is also possible to use more, in particular two back-up rolls, which in various cases can also be supplemented by support rollers or pressure rollers (13).

The winding stations (14.1, 14.2, ..., 14.n) according to the invention, depending on the desired sub-web widths of more than two winding blocks (15) exist. Basis of a winding frame (15) forms a base (16) which is on a rail or carriage system (17) transversely to the material web (8) movable and at its upper end a guide track (18) is formed on the longitudinal direction (X ) of the material web (8), a guide carriage (19) is movable. The guide carriage (19) receives a rotatably mounted end winding (20) which engages the winding in the sleeve (10). The winding heads (20) are suitable for example by continuously adjustable clamping elements for receiving different winding tube diameter (GH, KH). The winding head (20) can be driven by a, the winding block (15) own drive (21). According to the invention, however, the winding head (20) can additionally be driven or supported by one or more drives (21) of adjacent winding blocks (15). For this purpose, the at least two winding blocks (15) are brought into operative connection with one another via shaft and / or gear couplings (22) such that they form a series connection or a parallel connection. For this purpose, differential gears can be provided or interposed.
In addition, it is advantageous if the winding blocks (15), which are in mechanical operative connection with one another, additionally have couplable electronic interfaces for exchanging data, in particular for regulating the parameters necessary for the winding process and / or possible position data. Furthermore, an electrical interface for feeding power from the power grid or for regenerating power during a braking operation or a deceleration of the partial web or finished roll (11) is of great advantage. Both interfaces can be combined locally to form a transfer point (25).

In FIG. 2 is a first arrangement example shown that the idea of a simple refitting makes use of existing potentials. Shown is one, with an inventive Roll-up device (5) retrofitted, back-up roller slitter (1) on the originally finished rolls (11) were wound with a maximum width corresponding to the respective hatched half of the finished rolls (11) shown here to be wound. Overall, eight finished rolls (11) of the same width could be produced on the slitter-winder (1). By retrofitting according to inventive features, it is now also possible to produce four double rolls (11), each twice as wide. For this purpose, the existing, according to inventive features converted Wickelböcke (15) are moved together in each case for two.
Since the minimum cutting width to be considered plays a subordinate role in this exemplary embodiment, the winding blocks are each coupled via intermediate functional elements (24).
A winding station (14.2) then consists of two pairs of winding blocks, which can be formed, for example, each from an original winding station (14.1). Up to 100% of the winding power in a common direction in the course of the Y-axis can be retrieved on both winding blocks of each winding pair.
The Wickelböcke (15) are fully automatic to form a Wickelbock pair and with the help of at least one in FIG. 1 schematically indicated relief and centering device (23) drove together and in the present case via likewise also only schematically indicated gear coupling (22) brought into operative connection with each other. To facilitate the coupling process, at least one sensor (not shown) is provided on each winding block (15) at both of its sides delimiting in the Y-direction. Alternatively, a fully automated operative connection of the individual winding blocks (15) is also conceivable with the aid of the positioning device for positioning the individual winding blocks (15) or for determining the desired pattern, anyway. The proposed transmission clutch (22) allows the Winding power of two winding blocks (15), or their drives (21) to the winding with the sleeve (10) in connection winding head (20) of, to be produced finished roller (11) on the closest winding frame (15) to transmit.
Finally, it is also possible for the operator of the illustrated back-up roll slitting machine (1) to produce the eight narrower finished rolls (11) mentioned by way of example in a conventional arrangement.
The individual winding blocks (15) are connected to a positioning device of a higher-level control (R), which also takes over the regulation of the drive torques or drive powers and can be equipped with a monitoring unit (C), here in the form of an imaging device.

The Figures 3 and 4 represent a particularly universally applicable embodiment and show the same retractor (5) in very different configurations. The same retractor (5) is thus, as in FIG. 3 shown, initially used for the production of a variety of narrow finished rolls (11). Shown here is the production of twenty-one finished rolls (11) with an exemplary width of 0.5 m. The drives (21) of the winding blocks (15) shown to give their performance, seen in the Y direction, on both sides. Only in each case arranged on the edge regions Wickelböcke (15) are loaded on one side. The drives (21) are preferably driven in the partial load range in this arrangement, since the finished rolls to be produced (11) require relatively little drive power.

On the other hand, the same retractor (5) in one, the FIG. 4 corresponding configuration charged with very different finished roll format widths. In the upper left of the image area, a partial or finished roller with standard width is shown. She has a big one Winding sleeve (GH), for example, with a diameter of 150 mm and is made in a winding station (14.3), which is formed from two winding blocks (15). The drives (21) of the two winding blocks (15) operate at full load.
In the upper, right image area, a narrower Teilbahn- or finished roller (11) on a small winding tube (KH) is produced on the same side of the support roller (12). The diameter of such a small sleeve may be 76 mm, for example. With fundamentally the same construction of the winding station (14.4) working here from two winding blocks (15), their drives work only in the partial load range, here assumed to be about 60%.

On the opposite side of the support roller (12) also two Teilbahn- or finished rolls (11) are produced. The winding station (14.1) shown in the lower left image area is constructed asymmetrically. On the one hand, a winding frame (15) is provided, the drive (21) due to the narrow and therefore also light Teilbahn- or finished roller (11) is required only in the partial load range. Shown is an approximately 50% utilization. On the other side (in the Y direction) of the winding station (14.1) are three winding blocks (15) in operative connection with each other. The, the narrow Teilbahn- or finished roller (11) facing winding frame (15) are each about half of its drive power to be wound, narrow Teilbahn- or finished roller (11) and standing in operative connection with him other two Wickelböcke ( 15). Their combined power is required to wind an exceptionally wide partial or finished roller (11), which is shown in the lower right image area. This exceptionally wide Teilbahn- or finished roller (11) is thus produced in a winding station (14.2), on both sides of each two winding blocks (15) in the full load range and another winding frame (15) work in the partial load range.

Since the requirements for the format widths of the finished rolls (11) of respective types of paper or paper grades, which tend to change in stages after a few years and thereby tend to widen due to more powerful processing machines, in particular printing presses, such variability seems at a glance to be little challenged. Here, however, the spectrum of possible opportunities is to be shown in the first place. Moreover, the operator of a reel-up device (5) equipped according to the invention is free of any commitment to special customers, can also meet other market requirements, better overcome economic fluctuations in certain market segments and no longer has to renew his reel-cutting machine (1) due to format changes. Thus, for example, the producer of a particular type of paper can cut formats for high-performance printing machines, ie currently widths of approx. 4.32 m, as well as very narrow end customer formats of approx. 0.21 m.

LIST OF REFERENCE NUMBERS

1

contraption

2

unrolling

3

slitting section

4

Cutting device / knife

5

retractor

6

empty spool

7

Full tambour / mother roll

8th

Material web (here: paper web)

9

part web

10

Sleeve, winding sleeve

11

Partial web roll / finished roll

12

supporting roll

13

Support roller / pressure roller

14.1, 14.2, ... 14.n

winding station

15

winding bracket

16

undercarriage

17

Rail or carriage system

18

guideway

19

guide carriage

20

winding

21

Drive / motor / center drive / winding motor

22

Transmission or shaft coupling

23

Relief and centering device

24

Intermediate functional elements

25

transfer Agent

X

Machine direction / longitudinal direction of web

Y

Transverse direction to the material web

Z

height direction

GH

Big sleeve

KH

Small sleeve

UMB

originally maximum width

→

Direction of the power delivery

50%, 100%

Exemplary shares of the power output

*

Power output in the original direction

**

Power output in the opposite direction

***

Power delivery at the same time both sides

R

Parent control device

C

monitoring unit

-----

loop

Claims (15)

1. Method for winding material webs (8), in which a material web (8) is unwound from a parent roll (7), cut into part webs (9) in its longitudinal direction in a cutting section (3) and wound up again in a winding device (5), individual winding stations (14.1, 14.2, ..., 14.n) formed from winding stands (15) being provided to wind up the part webs (9),
   characterized in that
   at least one drive (21) of a first winding station (14.1) drives, also drives or partly drives at least one second winding station (14.2).
2. Method according to Claim 1,
   characterized in that
   the drive power can be called up on both sides from at least one of the winding stands (15) that are needed to form a winding station (14.1, 14.2, ..., 14.n).
3. Method according to one of the preceding claims,
   characterized in that
   the drive torques from the winding motors (21), which drive torques are needed to wind up the part webs (9), are generated with one another or increased in particular via coupled gear or shaft couplings (22).
4. Method according to one of the preceding claims,
   characterized in that
   use is made of load-relieving and centring apparatus (23), in particular centring pins, which ensure exact positioning of the functional elements, in particular the gear or shaft coupling (22), and are suitable for absorbing transverse forces which occur, in particular as a result of the inherent weight of the drives.
5. Method according to one of the preceding claims,
   characterized in that
   the winding stations (14.1, 14.2, ..., 14.n), in particular the winding stands (15), are moved towards each other for this purpose.
6. Method according to Claims 1 to 4,
   characterized in that
   the winding stations (14.1, 14.2, ..., 14.n) remain spaced apart for this purpose, and the transmission of power can be undertaken with the aid of interposed functional elements (24), in particular gear or jointed rods.
7. Method according to one of the preceding claims,
   characterized in that
   the gear or shaft coupling (22) can be engaged and disengaged partly or fully automatically.
8. Device (1) for winding material webs (8), in which a material web (8) is unwound from a parent roll (7), cut into part webs (9) in its longitudinal direction in a cutting section (3) and wound up again in a winding device (5), individual winding stations (14.1, 14.2, ..., 14.n) formed from winding stands (15) being provided to wind up the part webs (9),
   characterized in that
   at least one second winding station (14.2) can be driven, also driven or partly driven by at least one drive (21) of a first winding station (14.1).
9. Device according to Claim 8,
   characterized in that
   the drive power can be called up on both sides from at least one of the winding stands (15) that are needed to form a winding station (14.1, 14.2, ..., 14.n).
10. Device according to Claim 8 or 9,
    characterized in that
    the drive torques from the winding motors (21), which drive torques are needed to wind up the part webs (9), are generated with one another or increased in particular via coupled gear or shaft couplings (22).
11. Device according to one of Claims 8 to 10,
    characterized in that
    at least two winding stands (15) can be positioned in relation to one another and/or detachably connected to one another with the aid of at least one load-relieving and centring apparatus (23).
12. Device according to one of Claims 8-11,
    characterized in that
    the winding stations (14.1, 14.2, ..., 14.n), in particular the winding stands (15), can be moved towards one another for this purpose.
13. Device according to one of Claims 8-11,
    characterized in that
    the transmission of power can be undertaken with the aid of interposed functional elements (24), in particular gear or jointed rods.
14. Device according to one of Claims 8-13,
    characterized in that
    the gear or shaft coupling (22) can be engaged and disengaged partly or fully automatically.
15. Device according to one of Claims 8-14,
    characterized in that
    the device (1) can be converted or upgraded.

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