DE102008002315A1 - Method for optimizing the operation of a device for winding a material web in a slitter-winder and slitter-winder - Google Patents

Abstract

The invention relates to a method for optimizing the operation of a device (1) for winding a material web (M) on a winding tube (2) to a winding roll (3) in rotary cutting machines (9) after slitting one of a device (10) for unwinding unwound material web (MG), comprising two axially parallel to each other, drivable support rollers (5, 6) for supporting the winding roll (3) to form two winding nips (7, 8), wherein in the first winding nip (7) the material web (M) to the winding roll (3) is guided under at least partial wrapping of the first support roller (5) and the first support roller (5) in the web direction of travel downstream second support roller (6) is free of a wrap around the material web and in which depending on at least one desired value of a required Power (Psoll) of the device (1) for winding at least indirectly characterizing size the drives of the individual T. ragwalzen (5, 6) are precontrolled, and which is characterized in that the drive of the second support roller (6) independently of taking into account actual values of the drive behavior of the first support roller (5) at least indirectly descriptive variables is finely controlled / finely regulated. The invention also includes an apparatus for carrying out the method.

Description

The The invention relates to a method for optimizing the operation a device for winding a web on a winding tube to a Winder in slitter after slitting one of a Apparatus for unwinding unwound web comprising two axially parallel to each other arranged drivable support rollers for support the winding roll to form two winding nips, wherein in the first Winding nip the web to the winding roll under at least partially Looping the first support roller is guided and that of the first Carrier roller in the material web running direction downstream second support roller is free from a wrap around the web and at which dependent on at least one setpoint of the required power of Device for winding at least indirectly characterizing Size the drives the individual support rollers are precontrolled.

Under slitting a material web is the severing of the material web in at least two partial material webs in the longitudinal direction understood the material web, wherein the individual material partial webs each wound on a winding core or winding tube to a winding roll are.

Under a pilot control / pre - regulation is the control / regulation of the Essentially desired Driving data of the machine understood. The term used below the fine control / fine control should in contrast to the measures on the recruitment, in particular the maintenance, of the continuity of the Essentially desired Ensure driving data. The manipulated variables of the pilot control / pre-regulation are large compared to the manipulated variables of the Fine control / fine control.

Two-drum winders are in a variety of designs known from the prior art. These are characterized by that winding a web on a winding tube through guide the material web over one with the winding tube a first winding nip forming carrier roll takes place. Further is a second axially parallel to this arranged support roller provided wherein both support rollers to wound wound reel under training of winding niches in such a way that they support for or the wound roll / s to be wound form a winding bed. To Preferably both support rollers are driven, wherein in general the first support roller is speed controlled and thus the speed the web, so the Ab and Winding pretends. The second support roller, however, is usually torque-controlled and thus determines primarily the winding hardness and Thus, the web tension between the first and second support roller, during the Web pull into the winding nip of the first carrier roll in through the Settlement is determined. To a continuous stress To satisfy the material web during the winding process, the train must be up in the first winding nip in the web tension between the two support rollers serve as a setpoint. Often is used to drive the two support rollers, a load distribution factor considered, that is, on the, assumed as a constant size, web train between Settlement and settlement is due. This is finally essentially of material-specific characteristics of the material web and the desired Winding speed dependent.

The Winding roll itself forms during of the winding process disturbances, they over the two winding nips to the individual support rollers and gives the From there, act on the reel again.

The Speed for However, the winding process is a prerequisite for a continuous process as possible to adhere exactly. The dependent this power required to be generated at the moment the two support rollers is between the drives of these support rollers divided according to a given load distribution factor, which is essentially the size of the wound up Winding roll and the arrangement of the individual support rollers is dependent. However, even at constant winding speed is the required power to be generated due to the on the winding process affecting web tension fluctuations during unwinding not steady, which is why the torque on the second support roller accordingly varies, which may be constantly to a reaction of the drive of the second support roller to the detected Bahnzugschwankungen to lead can. The ongoing change the torque of the second support roller leads to a continuous change of Winding conditions in the take-up area, in particular at the second King roll. During an acceleration process or deceleration of the Unwinding reinforced This problem is still, which, for example, in an unclean structure reflect the winding roll in these phases. The result achieved poor construction of the winding roll during such an acceleration phase, especially if the roll core is not round, but from the round Deviating form wound affects the rest of the other Winding process. Such deviating from the ideal shape geometries and cause conditional imbalances to oscillations whose frequencies are different from the roll diameter and the Machine speed dependent are. In the worst case vibrations are triggered or even reinforced.

When countermeasure become in the prior art, the, in current speed changes noticeable, web tension fluctuations as a disturbance on the speed-controlled support roller recorded and used for their fine-tuning. Because the whole winding up previously regarded as a unit, the fine regulation of the torque-controlled support roller then depending on the regulation of the speed-controlled Carrier roll, generally according to the present load distribution factor. Such control devices have become at production speeds still proven up to about 1600 m / min to 1800 m / min, since they already have a large part reduce the winding error to an acceptable level, but are due Their stochastic process property can only be optimized to a limited extent. Today's production targets of 2000 m / min to 3000 m / min are accordingly with control methods and devices according to the prior art not or only with little problematic types of paper implementable. After all are the winding relationships between second carrier roll and wound roll, due to the divergence between the indirect control of this support roller and the fluctuations in the balance of power in their winding nip, not stable and therefore not reproducible.

Of the Invention is therefore the object of a method and a Apparatus for winding a material web onto a winding roll develop in such a way that the constant fluctuations of the balance of power compensated in the area between the unwinding and the support rollers so that the winding process becomes independent of these influences. The ratios in the winding area are to stabilize and reproducible too shape.

The The present invention is characterized by the features of the independent claims. advantageous Embodiments are the subclaims, the description and to take the drawings.

One inventive method of the type mentioned and a device for carrying out the Method are characterized in that the drive of the second Carrier roller independently from a consideration of actual values of the drive behavior of the first support roller at least Indirectly descriptive quantities finely controlled / finely regulated becomes. In this case, the setpoint specification as a function of at least one actual value at least one of the settlement of the web roll at least indirectly descriptive size.

The inventive solution offers the advantage of making changes the train, the particular example during acceleration and deceleration operations strongly and to change The speed at the first support roller, no longer directly on the prevailing in the second winding nip on the second support roller Torque effect and that is present on the second support roller Torque independent of such fluctuations only depending on the requirements, by the setpoint specifications for the Wound and the states are specified in the unwinding, is set. This frees up Adjustable torque in the second winding nip is thus always easily reproducible.

Under the settlement will be at least indirectly descriptive quantities understood physical state or motion variables, which the Characterize unwinding of the web from a web roll. This includes in particular the speed of movement of the material web, characteristic values, the Material web and sizes that Describing the train.

Under one, one size at least becomes indirectly descriptive size a physical quantity / parameter understood, about the describable size or can be determined, in particular with the respective sizes in functional Related.

In an advantageous embodiment the first support roller is preferably speed-controlled, while the second carrier roll is torque-controlled, wherein the torque control the second support roller independently from the influence of the actual value of the speed of the first support roller takes place. This can cause that the determination of the setpoint for the torque to be set on the second support roller only in dependence the setpoint specification for the speed of the winding and the conditions in the unwinding range specified parameters, these setpoints in proportion a control cycle in mutual dependence of the actual values of the Movement of the web in the unwinding area determining characteristic values as well the setpoint specifications for the operation of the take-up, in particular the winding speed, the to provide the required performance of the device for Winding at least indirectly descriptive sizes are.

The Actual value determination can be done with appropriate facilities for recording the sizes mentioned above. In a further development can these also directly over another control / regulation can be specified, which processes these.

In addition, according to the invention, disturbance variables in and / or at the second winding nip can advantageously be detected by sensors and, in a particularly advantageous embodiment, for control, in particular for fine control / fine control development, application. It is particularly advantageous if the determined in the second winding gap disturbances directly to the control / regulation, especially fine control / fine control, the second support roller at least indirectly descriptive driving data can be used, or at least temporarily during the winding process to at least one the driving data at least influence indirectly descriptive size.

One Such configured method is particularly advantageous because In this way, nominal deviations in the second winding nip are detected directly and to regulate the prevailing process parameters can.

A Disturbance is control theory equate to a deviation from a target size so it in the determination of the disturbances here insignificant is whether they are directly recorded or directly derived from them Reactions are determined.

• – Verteilung der Wickellast (VWL)
• – erforderliche Drehmomentkomponente zur Beschleunigungskompensation (BK) der Tragwalze (6)
• – erforderliche Drehmomentkomponente zur Beschleunigungskompensation (BK) der Wickelrolle (3).

The required torque to be set of a single support roller is determined in a further preferred variant of the method for optimizing the winding result as a function of the variables mentioned below:

• - distribution of the winding load (VWL)
• Required torque component for acceleration compensation (BK) of the support roller ( 6 )
• Required torque component for acceleration compensation (BK) of the winding roll ( 3 ).

This offers the great advantage that all incoming components are predefinable, so that the entire, on the support roller 6 Torque to be defined and thus reproducible. Thus, a basic requirement has been created compared to the prior art to be able to optimize the winding process in this area targeted.

• – Verteilung der Wickellast (VWL)
• – erforderliche Drehmomentkomponente zur Beschleunigungskompensation (BK) der Tragwalze (6)
• – erforderliche Drehmomentkomponente zur Beschleunigungskompensation (BK) der Wickelrolle (3).
• – erforderliche Drehmomentenkomponente zur Kompensation der im zweiten Wickelspalt erfassten Störgrößen

In a further, advantageously configured method, the required torque to be set of a single support roller can be determined in order to optimize the winding result as a function of the variables mentioned below:

• - distribution of the winding load (VWL)
• Required torque component for acceleration compensation (BK) of the support roller ( 6 )
• Required torque component for acceleration compensation (BK) of the winding roll ( 3 ).
• - Required torque component for compensation of the detected in the second winding gap disturbances

Become the disturbances and thus their negative influence on the winding result directly at their place of origin captured and is it over a control device possible, can also respond directly with appropriate corrections these influences be defined as currently defined. Also with that is a reproducibility the winding process and consequently also the expected winding results guaranteed.

In a particularly advantageous embodiment, the differ for control / regulation, in particular for fine control / fine regulation the first support roller and the second support roller used regulator in at least one functional component. This is for example then particularly advantageous, although a temporal decoupling the process reactions to be caused by the individual control devices required is.

The inventive device is essentially a parent Control / regulation characterized, which with the individual controls / regulations is coupled to the individual support rollers and specifies the input variables for them, in particular the setpoints for the speeds and torques at the individual support rollers in dependence a concrete performance requirement specification. Here are the controls the individual support rollers themselves free of a coupling with each other, d. H. is at the second support roller associated control / regulation in particular also no entrance for the specification of an actual value of the driving conditions of the first support roller descriptive Sizes provided.

The solution according to the invention explained below with reference to figures. This is in detail The following is shown:

1 exemplifies the basic structure of a carrier roll cutting machine;

2 illustrates in a simplified schematic representation of the winding problem in a carrier roll according to 1 ;

3 illustrates in a schematic simplified representation of the basic structure and the basic function of a controller according to the invention.

4 shows a schematic representation of the qualitatively transmitted in a history diagram winding problem

The 1 illustrates in a schematic simplified representation of the structure and function of a device 1 for winding a material web M on a winding tube 2 forming a so-called winding roll 3 in a carrier rolls reel slitter 9 after processing a material web MG with a predefined width of a web roll 11 under separation and division into partial material webs of predefined widths. The device 1 for winding webs of material is as a carrier roll winding device 4 educated. This comprises at least two axially parallel to each other arranged support rollers 5 and 6 for supporting the winding tube 2 and after winding a material web M on this the support of the winding roll thus formed 3 under formation of winding nips 7 and 8th , For clarification, here is a coordinate system to the carrier roll cutting device 9 applied, wherein the X-direction characterizes the machine direction and also the guide direction for the material web M during unwinding and winding. The Y direction corresponds to the direction perpendicular to this and describes the width of the carrier roller cutter 9 , In this direction, the longitudinal axes of the web roll extend 11 and the winding roll 3 , The Z direction describes the height direction. Such a carrier roll cutting device 9 is characterized by being a device 10 for unwinding a web roll 11 includes. From this, the material web MG in the circumferential direction with rotation of the winding roll 11 settled and in one of these subordinate institution 12 for separating a material web, here of the web roll 11 unwound material web MG divided into at least two partial material webs of predefined width, which after subdivision of a device 1 for winding material webs M to form the bobbins 3 be supplied. The device 12 includes at least one cutting station 13 , which can be designed in various ways. Conceivable are versions with rotating or resting on the material web MG engageable separating elements. To the cutting station 13 closes here in the machine direction a device 22 for separating the individual material webs and feeding to individual winding stations of the device 1 for winding the individual material partial webs. The device 1 comprises at least one winding station. Furthermore, in 1 the device 10 for unwinding a web roll 11 arranged downstream of a device for bonding material web ends in order to carry out the winding process continuously.

The 2 illustrates in a schematic simplified representation of the basic principle of a combined unwinding and Aufwickelvorganges in a carrier roll cutting device 9 , Visible here is the web roll 11 from which the material web MG is unrolled. This is also called a mother role. The material web MG is from this full width of a device 12 for separation for subdivision into material webs M supplied and the individual material sub-webs as material webs M of this to the device 1 for winding webs of material on a winding tube 2 , In particular, the individual material webs each have a winding tube to form a winding roll 3 guided. To ensure a continuous unwinding and winding process with optimum winding results, it is necessary that the web tension of the material web between the unwinding and the winding is substantially constant so that no damage to the material web occurs. Winding faults attributable to a non-uniform web tension may, for example, be reflected in cracks or wrinkles and also cause corresponding consequential damage. Unwinding and winding process are to be adapted to each other. In particular, the winding predetermines the process speed, while the torque to be set in the winding must essentially be based on the conditions prevailing in the development. Each of the individual unwinding devices 10 and for winding up 1 is a corresponding control / regulation, here a control / regulation 14 the device 10 for unwinding and a control / regulation 16 the device 1 assigned for winding, which preferably has a higher-level control / regulation 15 upstream. The tasks of the two controllers / regulations 14 . 16 and the higher-level control / regulation 15 can also be formed by a common control, which is considered as the main control for the combined unwinding / cutting and winding process.

Under a control / regulation, the entirety of the execution of Control tasks required functional components and their links Understood. This includes Control devices, Controllers, devices for the acquisition of actual values, disturbance variables and Control devices and their connections with each other.

The device 1 assigned control / regulation 16 serves to control the drives of the individual support rollers 5 and 6 , These are the manipulated variables Y5 and Y6 the individual support rollers 5 . 6 predetermined and adjusted to the adjusting devices of these associated drives. Preferably, each of the support rollers 5 and 6 a separate control and / or regulation 17 respectively 18 assigned. The in the direction of rotation of the winding roll 3 on the outer circumference of this the second winding nip 8th forming second support roller 6 is always about the winding roll 3 with the first carrier roll 5 mechanically coupled. The relationships in from the device 1 formed winding area are significantly dependent on the setpoint specification for the winding speed and the settlement in the device 10 and the conditions in the web guide dependent. To a continuous operation To allow free from interference in principle determines the desired winding speed of the device 1 the unwinding speed at the device 1 , The required drive power of the device 10 , in particular the support rollers 5 . 6 is a load distribution factor on the two support rollers 5 . 6 divided up. In the embodiments according to the prior art, the required drive power was via the control of both support rollers 5 . 6 set as a unit, wherein the drive of the second support roller 6 depending on the actual sizes of the drive of the first support roller 5 was controlled. However, this has also led to a constant machine speed, which corresponds to the speed of the material web movement, the occurrence of Bahnzugsschwankungen that due to the on the support roller 5 adjusting actual values in response to these at the second support roller 6 no stable conditions in the winding bed due to a constant fluctuation of the torque to be set on the second support roller 6 which was negative in relation to the winding result. To the through the winding roll 3 generated mechanical coupling of the two support rollers 5 . 6 keep free from these influences, according to the invention operate the two controls / regulations 17 and 18 irrespective of their superior upstream control 16 independently of the control technology, that means there is no data exchange at the same level. The drive of the carrier roll 5 and the drive of the support roller 6 be carried out according to Invention independently, taking advantage of the fact that due to the mechanical coupling, the movement of the second support roller 6 to which the first one equates. This avoids strong fluctuations. In this way, the, for the winding quality crucial and increasingly difficult process or winding speed increasingly difficult fine control of the individual support rollers can do well, since the relevant regulation exclusively for them to take into account significant variables --sodass the basis for a responsive signal processing is created.

In detail, the control according to the invention is exemplified as in 3 shown, realized.

3 illustrates in schematic simplified representation of an execution of the individual controls / regulations 17 . 18 with the higher-level control / regulation 16 , These setpoint values XE-soll are fed to the variables that describe the winding, at least indirectly. The single setpoint XE should, particularly for the set speed _to v, it can be determined directly. Further setpoint values, in particular the setpoint value for the web tension B _soll, can be derived from the actual values of variables characterizing the unwinding process. The variables describing the unwinding process at least indirectly are exemplified by means 23 to capture these, such as in 2 the means for detecting a Bahnzugwertes determined. Furthermore, it is conceivable that these from the, the device 10 for unwinding associated control / regulation 14 provide. These sizes are used to control the individual support rollers 5 . 6 required nominal values XE _soll-5 , XE _soll-6 in 16 determined and the respective controls / regulations 17 . 18 the individual support rollers 5 . 6 fed.

The required drive power P _is the device 1 essentially results from the, the desired conditions in the take-up area 1 at least indirectly descriptive quantities. As these are the speed v _should and the train B _{is considered} in this area at least indirectly beschrei Benden sizes. The latter results preferably from the actual value of the web tension B _is after unwinding from the material web roll 11 , In order to achieve the same winding conditions and no wrinkling or tearing, the web tension is matched during winding to that of the unwinding, in particular, the actual value during unwinding corresponds to the desired value during winding. From these nominal values results in a required drive power P _soll , which of the support rollers 5 . 6 is to raise. Corresponding to a load distribution factor LVF, which essentially depends on the position and design of the individual support rollers 5 . 6 , But also depends on the material to be wound and on the winding size, the required drive power is on the individual support rollers 5 . 6 divided, resulting in the individual winding nips 7 . 8th determine prevailing forces. These are in the higher-level control / regulation 16 the setpoint values of the input variables XE _soll-5 , XE _soll-6 for the individual controls 17 . 18 the individual support rollers 5 . 6 determined taking into account further influencing parameters. The target values of the input variables XE _soll-5 , XE _soll-6 are the nominal torque values M _soll-5 and M _soll-6 for the individual carrier rolls 5 and 6 as well as the speed setpoints for the drive of the individual carrier rollers 5 and 6 , here n _-5 and n _{soll-6 are} considered. These variables are _intended as inputs XE _-5 and XE _{-6 to} the individual controls 17 and 18 for the carrier rolls 5 and 6 which is also part of the higher-level control 16 could be. In this case, the setpoint specification for the second carrier roll takes place 6 , In particular, the setpoint specification for a torque M des _-6 free of consideration by the first support roller 5 given drive situation. The second carrier roll 6 thus becomes independent of the first carrier roll 5 according to from the predetermined desired values _to be set for the v Bahngeschwindig Speed and thus winding speed, the load distribution factor LVF and the setpoint for the train B _should be controlled separately. The drive of the second support roller 6 takes place decoupled from the drive to the first support roller 5 only dependent on the higher-level setpoint specifications XE-soll. Specifically, when determining the setpoint values for the moments M _soll-5 and M _{soll-6 of} the individual support rollers 5 . 6 , which takes into account the boundary conditions affecting the setpoints. The required torques M _soll-5 and M _soll-6 can each be used as functions of the load distribution factor LVF, the required acceleration .DELTA.v / .DELTA.t taking into account the moments of inertia T5, T6 of the individual support rollers 5 . 6 who has the winding roll 3 at least indirectly descriptive parameters, in particular XE-3, such as the winding diameter, are determined. In this case, the distribution of the winding load WLV results from the required web tension setpoint B _soll and the load distribution factor LVF. Also taken into account are torque components for acceleration compensation BK on the respective support roller 5 . 6 due to the moments of inertia of the support rollers T5, T6, the moments of inertia through the winding roll 3 as well as the friction in the winding nip 7 . 8th between the individual support roller 5 . 6 and the winding roll 3 ,

The speed setpoint v _soll for the winding speed or the web speed results in respective speed _setpoints n _{soll_5} and n _soll-6 for the two carrier rollers 5 and 6 , The setpoints n _soll-5 and n _soll-6 for the speeds are in the control / regulation 17 respectively 18 fed to a so-called speed controller, the setpoint for the speed n _soll-5 a speed controller 20 for the first carrier roll 5 and n _soll-6 a speed controller 21 for the second carrier roll 6 , The current actual values n _is -5 and n _is -6 at the individual carrier rollers 5 . 6 are determined and also the speed controller 20 . 21 supplied, wherein according to the embodiments of the speed controller tracking can be done. The value supplied to the speed controller from the actual speed value and the speed setpoint in each case and the value thus determined via the speed controller then results in the torque setpoint which is input.

In general, based on the setpoint values for the speed in the higher-level computer, the torque components therefore become the friction and acceleration compensation of the individual carrier rollers 5 . 6 and calculates the torque for acceleration compensation of the web rolls. The torque required for the specified web tension setpoint B _is applied to the drives of the support rollers in accordance with a load distribution factor LVF 5 . 6 divided up. This results for the carrier roll 5 from the evaluation of these signals, the signal for a torque precontrol. From the output signal of the speed controller 20 the carrier roll 1 which is added up becomes the result of the torque command value M _soll-5 for the carrier roll 5 specified. The speed controller 20 By adjusting its output signal ensures that the drive of the support roller 5 the speed setpoint n _soll-5 follows. That is, the actual value n _{ist-5 of} the rotational speed is set in accordance with the target value n _soll-5 . The drive of the carrier roll 5 is thus speed controlled.

The drive of the carrier roll 6 In contrast, torque-controlled.

The 4 clarified by means of a speed or speed / time diagram adjusting the winding problem during winding when driving the individual support rollers 5 . 6 due to web tension fluctuations. Visible is a first region I, the start-up or acceleration phase of the device 1 corresponds, the region III, which corresponds to a deceleration or deceleration phase and the intermediate region II, which corresponds to the actual continuous winding operation at a nearly constant machine speed. The curve IV illustrates the actual speed curve at the two support rollers 5 . 6 ,

1

contraption for winding material webs

2

mandrel

3

reel

4

Two-drum winder

5

king roll

6

king roll

7

winding gap

8th

winding gap

9

Carrier roll slitter

10

contraption for unwinding material web rolls

11

reel

12

Facility for separating material webs

13

cutting station

14

Control / regulation

15

Control / regulation

16

Control / regulation

17

Control / regulation

18

Control / regulation

20

Speed control

21

Speed control

22

Facility for separation

23

Facility for recording

v _should

value speed

B _should

setpoint Train

LVF

Load distribution factor

Economics

Winding load distribution

BK

acceleration compensation

T5

Moment of inertia of the carrier roll 5

T6

Moment of inertia of the carrier roll 6

n _{is -5}

Actual value for the speed at the support roller 5

n _{is -6}

Actual value for the speed at the support roller 6

M _soll-5

Setpoint for the torque at the support roller 5

M _soll-6

Setpoint for the torque at the support roller 6

n _should-5

Setpoint for the speed at the support roller 5

n _should-6

Setpoint for the speed at the support roller 6

XE-3

Input variables, the properties of the winding roll 3 concerning

XE _shall-5

Input value of the control / regulation for the carrier roller 5

XE _should-6

Input variable for the control / regulation of the carrier roller 6

B ₈

In the winding nip 8th occurring disturbances

I, II, III

operating phases

IV

Speed characteristic

Claims (8)

Method for optimizing the operation of a device ( 1 ) for winding a material web (M) on a winding tube ( 2 ) to a winding roll ( 3 ) in slitting machines ( 9 ) after slitting one of a device ( 10 ) unwound unwound material web (MG), comprising two axially parallel to each other, drivable support rollers ( 5 . 6 ) for supporting the winding roll ( 3 ) forming two winding gaps ( 7 . 8th ), wherein in the first winding nip ( 7 ) the material web (M) to the winding roll ( 3 ) under at least partial wrapping of the first carrier roll ( 5 ) and that of the first carrier roll ( 5 ) in the material web running direction downstream second support roller ( 6 ) is free of a wrap around the material web and in which, depending on at least one setpoint value, the required power (P _soll ) of the device ( 1 ) for winding at least indirectly characterizing size the drives of the individual support rollers ( 5 . 6 ) are piloted, characterized in that the drive of the second support roller ( 6 ) regardless of consideration of actual values of the drive behavior of the first support roller ( 5 ) is at least indirectly descriptive sizes finely controlled / finely regulated. A method according to claim 1, characterized in that the first support roller ( 5 ) is speed controlled and the second carrier roll ( 6 ) is torque-controlled, wherein the regulation of the torque at the second support roller ( 6 ) regardless of consideration of an actual value of the rotational speed (n _ist-5 ) of the first carrier roll ( 5 ). Method according to one of the preceding claims, characterized in that disturbances (B ₈ ) in the second winding gap ( 8th ) are sensory detected. Method according to the preceding claim, characterized in that in the second winding nip ( 8th ) detected disturbance variables (B ₈ ) for control / regulation, in particular for fine control / fine control, application can be found. Method according to one of the preceding claims, characterized in that on the torque of the second support roller ( 6 ) can be reduced to the following effects: - distribution of the winding load (VWL) - required torque component for acceleration compensation (BK) of the support roller ( 6 ) - required torque component for acceleration compensation (BK) of the winding roll ( 3 ). Method according to one of claims 1 to 4, characterized in that on the torque of the second support roller ( 6 ) can be reduced to the following effects: - distribution of the winding load (VWL) - required torque component for acceleration compensation (BK) of the support roller ( 6 ) - required torque component for acceleration compensation (BK) of the winding roll ( 3 ). Required torque component for compensation of the disturbance variables detected in the second winding gap (B ₈ ) Method according to one of the preceding claims, characterized in that the for control / regulation, in particular for fine control / fine control of the first support roller ( 5 ) and the second carrier roll ( 6 ) controllers differ in at least one functional component. Slitter ( 9 ), in particular for carrying out the method according to one of claims 1-7, comprising a device ( 10 ) for unwinding a material web (MG), one of these downstream devices ( 12 ) for separating the material web (MG) and at least one device ( 1 ) for winding one in the facility ( 12 ) separated material web (M) to a winding roll ( 3 ), comprising two axially parallel arranged and drivable support rollers ( 5 . 6 ), with the winding roll ( 3 ) a winding nip ( 7 . 8th ) and a the individual support rollers ( 5 . 6 ) associated control / regulation ( 17 . 18 ), characterized in that the A gear of the second carrier roll ( 6 ) associated control / regulation ( 18 ) free of a coupling with a device for detecting or specifying an actual value of the rotational speed (n _is -5) of the first carrier roller ( 6 ).