EP1505024A2 - Method and device for controlling the cutting register of a rotary printing machine - Google Patents

Abstract

Detection of image information or measurement marks occurs directly before or at a cutting cylinder (K 4). From the measured value, the cutting registration error is determined and from the error, the position of the cutting cylinder is controlled. An independent claim is included for the corresponding equipment.

Description

The invention relates to a method and a device for regulating the Sectional register of a web-fed rotary printing machine.

In web-fed rotary printing presses, it is known as an actuator for the Cut register control a positioning roller which can be moved in linear guides used to change the Papierweglänge between two train units and to correct the register error. Such register rollers are shown for example in DE 85 01 065 U1. The adjustment takes place in Generally by means of an electric stepper motor. Such devices are with a relatively large mechanical and electrical effort afflicted.

It is an object of the invention to provide a simple method of controlling the Create editing register.

The object is achieved with the features of the independent claims.

In the method according to the invention, the transit time of the web pixels is added Adjusted a constant path, while in the prior art a Path length change is made at a constant path speed.

It is important that the measurement of the cutting register error takes place in front of the knife cylinder, wherein the knife cylinder has an angle-controlled single drive and the register control is superimposed on its position and / or speed control. Furthermore, the cut register control can be solved with the aid of a subordinate control loop, in which the partial register error Y * ₁₃ at or before the turning unit, for example, already at the end of the cooling unit, measured and compensated for the overfeed of the turning unit.

It is important that for controlling the cut register a specific or prominent image information of the printed web is detected by at least one sensor and fed to a control device, this image information must not be a set mark, and one for the deviation of the position of the printed image relative to its desired position on the location and time of the cut, ie for the cut register error Y ₁₄ , suitable image information measured immediately before or on a knife cylinder (terminal 4) and by at least one control loop to its predetermined setpoint, for example, to the value zero, is regulated, with correction via the knife cylinder, a controller specifies an angle setpoint α _14w for angular control of the knife cylinder or, if corrected via at least one non-printing nip located in front of the knife cylinder (nip 2 or 3), a controller sets the register setpoint Y * _{12 w} or Y * _{13 w} for a subordinate reg isterregler that corrects the partial register error Y * ₁₂ or Y ^* ₁₃ on the speed or advance of the nip 2 or 3 or coordinated with the use of at least two non-printing nips i and k and their velocities associated control circuits so that the Cutting register error Y ₁₄ to the predetermined setpoint Y * _{14 w} , for example, equal to zero, is controlled. In the following, for the sake of simplicity, the value zero is always spoken at the desired value Y * _{14 w} , whereby another suitable value can be substituted for it.

Preference is given to determining the controlled variables of sensors, however, models may also partially or completely replace these sensors, i. The quantities are equivalently determined by means of mathematical or estimated empirical models.

It is significant that the control of the angular position of the pressure units (terminal 1) when exceeding the barriers of size ω _3w the control of the partial register error Y * _{13 is passed} from the controller of the nip 3 to a controller 1.1 of the nip 1, ie the angle Clamp point 1 tracked and the too small or too large value of ω _{3w is} reduced to the permissible range. The tracking of the angle of the nip 1 is carried out for all operating conditions in which ω _{3w is} within the bounds, by an adjustment member 1.2, wherein by means of a mathematical model, a target value for the adjustment of the angle α _{1 w is} calculated, whereby always sufficient reserve of Manipulated variable or overfeed of the clamping point 3 is ensured. In the mathematical model, the relationship between the change in the lead required for the correction of the partial register error Y * ₁₃ and the resulting correction value α _{1 w is} calculated. Advantageously, the tracking of the angle of the nip 1 is slowly compared to the control of Y * ₁₃ , which doubling due to rapid changes in position of the printing units (nip 1) avoided and decoupling of the control loops is achieved.

It is important that a tracking in particular the angle-controlled Clamp 2 made angle synchronous to the nip 1 and thereby the Path time constant between terminal 1 and terminal 2 is ineffective.

The lead tracking at terminal point 1 can also be replaced by the lead tracking of terminal point 2, provided that a change in the lead of the terminal point 2 is not associated with a self-compensation of the force F ₂₃ . This is the case when moisture and / or heat is applied to the web in the leading web sections. As a nip 2 can therefore be used in particular the cooling unit of a web printing press, in particular a web offset rotary printing press.

The solution according to the invention requires no additional mechanical Web guiding element. To cut register correction are existing, not pressure train units used, such as. B. the cooling unit, pull rollers in Falzaufbau, the funnel roller or more in the path between the last Printing unit and knife cylinder lying train units, preferably by means of Variable speed single drives are driven.

Due to the special properties of the controlled system is the Cutting register control by means of an advance of a clamping point dynamically faster than the conventional solution by means of register roller, because of the Make a change in the path a change in the lead of the relevant terminal point occurs. A significant advantage of this register control with the help of the advance a nip is that hardly a wear of the mechanical Transfer elements occurs, as with a dynamically fast control with Help der Wegderung a roller would be the case. Another advantage is that the regulatory technical effort in this register regulation with the aid of Leading over a nip is less than with a dynamically fast Control by means of changing the travel of a positioning roller.

The parameters entering the cutting register control path are broad regardless of the characteristics of the rotary printing machine. Continue lets the quality of the cut register increases significantly with the new method.

The tracking of the web tension can also be solved by means of the dancer roll force, which is determined from the pressure of the associated pneumatic cylinder, the force measured, fed to a web tension controller and compared with the force setpoint, the output of the controller either directly the manipulated variable for the pneumatic cylinder or the setpoint F _{01 w} is, if a subordinate control loop for the input web tension F _{01 is} present. In place of the dancer roller can also be a web tension control loop for the web tension F ₀₁ occur. This force adaptation always ensures that the force change which has occurred rapidly as a result of the regulation of a disturbance is reduced relatively slowly with respect to this compensation.

The invention also relates to a device for carrying out the method for controlling the cutting register, the clamping points 1 to 4 are driven independently with drive motors with associated current, speed and optionally angle control and at the cut register and / or associated further register deviations Y * ₁₃ , Y * _{1 i} Y * _ik on or in front of a knife cylinder and / or on or in front of one or several clamping points i, k, 1 to 4 upstream of this knife cylinder (clamping point 4) via a specific image information or measuring marks of the printed web by means of at least one Sensors are detectable and for influencing the cutting register error Y ₁₄ a control and / or control device for changing angular positions or peripheral velocities v ₁ to v ₄ , ν _i , ν _{k of} the respective terminal point Ki, Kk, K1 to K4 are fed

Further features and advantages emerge from the dependent claims in Connection with the description.

Fig. 1:

Klemmstellen-Schema einer Rotationsdruckmaschine mit geregelten Antrieben,

Fig. 2:

Regelanordnung zum Regeln des Schnittregisters bei Kraftbegrenzung über die Druckeinheiten,

Fig. 3:

Regelanordnung zur Nachführung der Tänzerwalze und

Fig. 4:

Regelanordnung zum Regeln des Schnittregisters bei Kraftbegrenzung über die Kühleinheit.

The invention will be explained in more detail below with reference to some embodiments. In the drawings shows schematically:

Fig. 1:

Clamping diagram of a rotary printing press with controlled drives,

Fig. 2:

Control arrangement for controlling the cut register with force limitation via the pressure units,

3:

Control arrangement for tracking the dancer roller and

4:

Control arrangement for controlling the cut register with force limitation via the cooling unit.

Subsequently, the operation is based on the embodiments of a Four-roll system will be explained. It should be noted that at the real printing machine in place of a nip 1 of the four-roller system any number of printing units, e.g. 4 printing units, one web offset illustration printing machine or newspaper printing press or another type of rotary printing machines can occur. This is described below Principle of register correction by two superimposed control circuits, where one as the actual value measured immediately before the knife cylinder Register error gets, the other the one from a further ahead Clamping point, is to be transferred to all rotary printing press mutatis mutandis.

Function explanation on the four-roller system

The four-roller system of Fig. 1 is a simplified form of a rotary printing machine, in particular a web offset printing machine. In a following after the infeed terminal 1 (K1) all printing units are summarized. Clamping point 2 (K2) is in the case of an illustration printing press for the cooling unit, nip 3 (K3) for the turning unit and nip 4 (K4) for the folding unit with the cutting-determining knife cylinder. Sizes v _i are the circumferential speeds of the nip, which are approximated by the behavior of Coulomb friction coils. In rotary printing presses, the term "overfeed" is used instead of the term "speed". The lead W _{i, i -1 of} a nip i (Ki) with respect to a nip i-1 (Ki-1) is given by the term W i, ii = ν i - ν i -1 v i -1

In the following text, "speed" and "lead" are used interchangeably. The web force in a section i-1, i is referred to as F _{i -1, i} . In z _T , the changes of the modulus of elasticity and the section of the incoming web are summarized. Register error Y ₁₄ on the knife cylinder is referred to as overall cut register error or short as cut register error. A previously accumulated register error Y * _{l i} , measured at a non-printing nip i, is called a partial cut register error or, in short, a partial register error.

The system 1 of FIG. 1 is used as a mechanical controlled system (block 1 a in FIG. 2). with associated actuators (controlled drives in block 1 b in Fig. 2) understood.

The two controlled variables are the partial cut register error Y * ₁₃ and the total cut register error Y ₁₄ . The partial register error Y * ₁₃ is the deviation of a fixed image reference point, eg: the image edge, at the clamping point 3 (K3) in relation to the position of this point at the clamping point 1 (K1), relative to its correct position. The cutting register error Y ₁₄ is the error of the cutting edge at the clamping point 4 (K4) at the time of cutting in relation to its position at the clamping point 1 (K1), based on their correct position. Another controlled variable is the position, ie the angle, of the clamping point 1 (K1). The actuators form the controlled drive motors M1 to M4. The input variables X _iw shown in FIG. 1 represent the angular velocity (rotational speed) or angular desired values of the controlled drives M1 to M4, as can be seen in more detail from FIG.

The system ₍₁ K) supplied to transient or stationary mass flow through the input of the clamping point 1, measured in kgs ^{- 1} is represented by the peripheral velocity ν ₁ of the clamping point 1 (K ₁₎ and the elongation ε ₀₁ determined. In the case of Hooke's material, the force F _{01 of} the strain ε _{01 is} proportional. The force F ₀₁ is set by the contact force of a dancer-upper pendulum roller to the continuous web or by a tension control loop, the - corresponding to the position setpoint or force setpoint - directly or indirectly via another device for adjusting the web tension - the peripheral speed of the nip 0 ( Unwinding device). Only the peripheral speed of the unwind device is able to stationarily change the steady state mass flow introduced into the system. Hereinafter, it is assumed that changes of F ₀₁ or ν ₁ as a result of the change in the peripheral speed of the unwinding device caused thereby change the transient as well as stationary mass flow in the following track sections. The peripheral speeds of the other terminal points can - assuming Hooke'sches material - not change the mass flow stationary. The peripheral speeds are referred to below as speeds.

Register control loop I

The partial register error Y * ₁₃ measured in front of the nip 3 (K3) - for example a turning unit - by means of a sensor 6 is, as shown in FIG. 2, with a register controller 3.2 with the help of the speed v _{3 of} this nip 3 (K3) on a Setpoint Y * _{13 w} regulated. Instead of measuring the partial register error Y ^* ₁₃ immediately before the turning unit, a measuring location between cooling unit (K2) and turning unit (K3), eg also immediately after the cooling unit, can be selected, for example for structural reasons.

This speed control loop is subordinated to a speed control circuit 3.3 of the drive motor associated with the clamping point 3 (K3). The very fast dynamic behavior of the current control loop underlying the speed control circuit is negligible. The setpoint for the angular velocity (or speed) of nip 3 (K3) is ω _{3 w} .

If the nominal value for the partial register error measured at the turning unit is equal to zero, ie Y * _{13 w} = 0, and thus also the actual value on average, the overall cut register error Y _{14 would} generally not be zero, despite the fact that the Path on the way between turning unit and knife cylinder on the other to be passed through guide elements (for example, funnel roller, hopper, slipping transport rollers in the folder etc.) is subjected to forces that produce change in Bahnzugkräfte, eg when reel change, permanent cut register errors. Therefore, the total register error Y _{14 is also} measured and influenced, with several variants occurring. These variants are preferably explained for the one-lane operation on the embodiments. For multi-lane operation reference is made to the copending application PB04640.

Register control loop II a) Register control circuit for cutting register error Y ₁₄ (variant 1)

Instead of the above-described register control I for the partial register error Y ^* ₁₃ , a register control circuit for the total cut register error Y ₁₄ can be provided immediately. Manipulated variable is the lead or position of the knife cylinder 4. For this purpose, the register error is measured with the aid of a sensor 5 just before the knife cylinder 4, the comparison point of a cutting register controller 4.1 supplied and compared with a target value Y _{14 w} = 0 (dashed line in Fig. 2nd ). The register controller specifies a position setpoint α _{14 w} . When a cut register error occurs, eg during a roll change, the register error is compensated in accordance with the dynamics of the subordinate angle control loop.

b) Control loop for total cut register error Y ₁₄ and subordinate control loop for partial register error Y * ₁₃ (Variant 2)

However, it is also the loop for the total cut register error Y ₁₄ according to the principle of cascade control the loop for the partial register error Y * _{13 are} überlägert. For this purpose, the total register error, as described in a) and in the section "Register control loop I" measured just before the knife cylinder using another sensor 6, the comparison point of the cutting register controller 3.1 supplied and compared with the setpoint Y _{14 w} = 0. Due to the subordinate circuit (register controller 3.2), it is already recognized at the location of the turning unit that a later cutting register error will occur. By means of the cutting register controller 3.1, the setpoint value Y * _{13 w} is managed so that Y _{14 w} = 0 is always maintained within the scope of the dynamic possibilities. With the help of the speed ν _{3 of} the turning unit, therefore, the total cut register error on the knife cylinder K4 is suitably influenced in this way. For example, a PI controller is selected for the cutting register controller 3.1, which is optimized according to the magnitude optimum or the symmetrical optimum [Föl 88]. The output of the register controller 3.1 is limited by a barrier 3.6. The adaptation of the control loop to the machine speed as well as the compensation of dynamic elements of this register control path takes place in an adaptation element 3.4. This can also be implemented directly in the controller 3.1. In this case, an adaptation element is an adaptation of the parameters (for example amplification factors) of the closed control loop to the, machine speed. For this purpose, characteristics (characteristic curves and / or dynamic transmission elements) are stored in the adaptation element.

c) control circuit for the cut register error Y ₁₄ and subordinate control circuit for the partial register error before the hopper roll (variant 3)

It can, in one-lane operation, the control loop for the total cut register error Y ₁₄ according to the principle of cascade control a control circuit for the partial register error before the hopper roll instead of before the turning unit are superimposed (not shown in Fig. 2). For this purpose, the partial register error in front of the funnel roller is measured by a sensor. Command value is the lead of the funnel roller. The control loop is constructed as in b).

In the place of the funnel roller or the turning unit can also another, for example, before the nip 3 (K3) lying terminal point i (Ki), occur. Accordingly, the partial register error Y * _{l i is} measured and regulated at or before this terminal point i (Ki). The register correction is carried out either by the speed (overfeed) ν _{i of} this nip or Y * _{l i} is fed to another control loop (eg also for the purpose of precontrol). It is also possible to measure the partial register error or errors at a plurality of non-printing clamping points i and k (Ki; Kk) in front of the knife cylinder K4 and to correct them by means of associated control circuits via the velocities of ν _i and ν _k , Both control loops can also be combined appropriately. In particular, it may also be at least one periodic regulator, which is adapted in its effect to a periodic disturbance (see Patent DE 197 40 153 C2).

angle tracking

After the register control via the advance of the nip 3 (K3) (or as shown above other suitable terminal points) is connected to a change in the web tension F ₂₃ , it can not be excluded that large disturbances cause too small or too large web tension F ₂₃ , the can lead to the web break. The web tension F ₂₃ must therefore be limited. For this purpose, the speed ν ₃ is limited by specifying a lower and upper bound 3.5 of the output variable ω _{3 w of} a register controller 3.2. Upon reaching one of these Voreilungsschranken the angular position of the printing units, so in Fig. 1 of the nip 1 (K1), readjusted. Then, a register controller 1.1 takes over the register correction (dot-dashed lines in Fig. 2). If the overfeed limit is left, the register controller 3.2 comes back into action (detachment control).

In order for the register correction over the speed (overfeed) of clamping point 3 (K3) with respect to the permissible range of the web tension F ₂₃ always sufficient manipulated variable is available in an adjustment element 1.2 always from the advance of nip 3 (K3) using a mathematical Model a setpoint for the adjustment of the angle α _{1 w} calculated. This mathematical model describes the relationship between the lead changes occurring for the correction of the partial register error Y * ₁₃ and the resulting correction value α _{1 w} . While the register correction via the overfeed of nip 3 (K3) takes place as quickly as possible, the adjustment of the angle α _{1 w} is a slow correction on the other hand. As a result, rapid movements of the printing units, which cost energy and possibly doubling, avoided. The adaptation element 1.2 additionally contains a first-order or higher-order delay element for this purpose. This also ensures that in normal operation, ie when operating within the gates of the register controller 3.2, the register control loop and the angle adjustment of the terminal point 1 (K1) are decoupled. The switching between the control circuits takes place in an electronic switch 1.3, which is controlled by the evaluation of the barrier 3.5. In normal operation is thus always ensured by the angle adjustment by means of the adjustment member 1.2 that the occurred as a result of the rapid compensation of a fault change of advance of the nip 3 (K3) is slowly reduced again.

The overlaid controller 3.1 is also provided with a limitation of the output variable. Since this overlaid control for Y ₁₄ is to be set slower than the lower one for Y * ₁₃ , even with large disturbances, it is hardly to be expected that a too large setpoint Y * ₁₃ will be set. Nevertheless, for example, in the case of faulty failure of the adaptation element 3.4 or of the sensor for Y _14, an excessive modulation of the regulator 3.1 could take place, which is why a limitation is necessary.

Input force tracking

After the register control on the advance of the nip 3 (or as shown above other suitable terminal points) with a change in the web tension F ₂₃ , is connected, as described above, can not be ruled out that large disturbances to small or too large tensile forces F train ₂₃ cause that can lead to the web break.
Therefore, the force 2 F _{01 of} the dancer roller or the dancer roller system 7 (for example, via the pressure in the associated adjusting device, for example, pneumatic cylinder 7.3) adjusted, see. Fig. 3. For this purpose, a force regulator 7.1 for the force F _{23 is} provided to which the actual value of the force F ₂₃ - determined by a sensor 8 - fed and compared with the force setpoint F _{23 w} . Its output is either directly the manipulated variable for the designed as a pneumatic cylinder actuator 7.3 or the target value F _{01 w} if a subordinate control loop (controller 7.2) for the input web tension F _{01 is} present. This force adjustment always ensures that the force change that has occurred quickly in the section 2-3 as a result of the regulation of a disturbance is, on the other hand, reduced more or less slowly. For this purpose (as in FIG. 2, block 1.2) an adaptation element can be provided. For the data exchange described above, the dancer roller system 7 with communication points 7.4; 7.5 equipped. Instead of the dancer roller system 7, alternatively, a pendulum roller system can be used.

In place of the dancer or pendulum roller system can also be a web tension control loop occur, through which the force F ₀₁ , is specified (see Fig. 1). Both interventions change the stationary and transient mass flow introduced into the system by means of the peripheral speed of the unwinding device. This peripheral speed can also be influenced by means of at least one measured value for a web tensile force, web tension or web elongation. In place of the described angle tracking of the printing units can also occur a lead tracking of the cooling unit, as will be described below.

Lead tracking of the cooling unit

After the register control via the advance of the nip 3 (K3) (or as shown above other suitable terminal points) is connected to a change in the web tension F ₂₃ , it can not be excluded that large disturbances cause too small or too large web tension F ₂₃ , the can lead to the web break. The web tension F ₂₃ must therefore be limited. For this purpose, the speed ν ₃ is limited by specifying a lower and upper bound 3.5 of the output variable ω _{3 w of} a register controller 3.2. Upon reaching one of these Voreilungsschranken the lead of the cooling unit, so in Fig. 1 of the nip 2 (K2), readjusted. Then, a register controller 2.1 takes over the register correction (dot-dashed lines in Fig. 4). If the lead-over gate 3.5 is left, then the register controller 3.2 comes back into action (detachment control).

The use of the lead of the cooling unit to limit the force F ₂₃ is possible in that when adjusting the speed ν _2, the force F _{23 is} not self-compensating. This is due to the change in paper properties due to the moisture and heat input through the printing units and drying line.

In order for the register correction over the speed (overfeed) of terminal point 3 (K3) with respect to the permissible range of the web tension F ₂₃ always sufficient manipulated variable is available in an adjustment element 2.2 always from the advance of nip 3 (K3) using a mathematical Model a setpoint for the adjustment of the angular velocity ω _{2 w} calculated. This mathematical model describes the relationship between the lead changes occurring for the correction of the sub-register error Y * ₁₃ and the resulting correction value ω _{2 w} . While the register correction via the overfeed of nip 3 (K3) takes place as quickly as possible, the adjustment of the angular velocity ω _{2 w} is a slow correction on the other hand. The adaptation element 2.2 additionally contains a first-order or higher-order delay element for this purpose. This also ensures that in normal operation, ie when operating within the gates of the register controller 3.2, the register control loop and the Voreilungsnachstellung the nip 2 (K2) are decoupled. The switching between the control circuits takes place in an electronic switch 2.3, which is controlled by the evaluation of the barrier 3.5. In normal operation, therefore, the angle adjustment by means of the adjustment element 2.2 always ensures that the change in the prestressing of the clamping point 3 (K3) which has occurred as a result of the rapid compensation of a fault is slowly reduced again.

The above-described measures for cutting register regulation should not relate only to the application in offset web presses, but can be used in all other printing processes, substrates and Printing machines are used in an equivalent manner, especially in Gravure printing, screen printing, flexographic printing, textile printing, foil printing, metal printing, Label printing machines, textile printing machines, foil printing machines, Illustration and newspaper printing machines etc.

LIST OF REFERENCE NUMBERS

1

Mechanical controlled system with controlled drives

1a

Mechanical system (controlled system)

1b

Regulated drives

1.1

register controller

1.2

matching member

1.3

switch

2

control device

2.1

register controller

2.2

matching member

2.3

switch

3 3.1

Cut-off register controls

3.2

register controller

3.3

Speed control loop

3.4

matching member

3.5

Cabinets

3.6

Cabinets

4 4.1

Cut-off register controls

5

Sensor for cutting register error

6

Sensor for register error

7

Dancer roller system

7.1

Draft regulators

7.2

pressure regulator

7.3

Adjustment device / pneumatic cylinder

7.4

Communication interfaces

8th

Sensor for web tension

9

Sensor for web tension

K1

Clamp 1

K2

Clamp 2

K3

Clamp 3

K4

Clamp 4

Ki

Clamp i

kk

Nip k

F _ij

Web tension in section i-j

F ₀₁

Input web tension

F _01w

Web tension setpoint

F ₂₃

Web tension between K2 and K3

F _23w

Web tension setpoint

x _iw

input

v _i

Peripheral speed of the clamping point i

ω _i

Angular velocity / rotational speed of the clamping point i

ω _iw

Angular velocity setpoint

α _iw

Angle setpoint / position setpoint of clamping point i

Y ₁₃ *

Part register error between K1 and K3

Y _13w *

Register setpoint

Y ₁₄

Total cut register error

Y _14w

setpoint

R _P

pressure regulator

R _F

Draft regulators

R _Y

register controller

R _ω

Angular velocity (speed) regulator

M _i

Drive motor for terminal point i with associated control

p

Pressure of the pneumatic cylinder

z _T

Changes in the cross section and the modulus of elasticity

literature

[Föl 88] Föllinger, O .: Control Engineering. Heidelberg: Hüthig-Verlag 1988

Claims (27)

Method for controlling the cut register of a rotary printing press, in which for controlling the cut register a specific image information or measurement marks of the printed web is detected by at least one sensor (5, 6) and fed to a control device (2), characterized in that this detection of image information or Measuring marks immediately before or on a knife cylinder (K ₄ ) is performed that determined from this detected value of the cut register error and that from this cut register error, the position of the knife cylinder (K ₄ ) is affected. A method according to claim 1, characterized in that the object to be controlled total cut register error (Y ₁₄₎ is measured immediately before or on a knife cylinder (K ₄₎ and controlled by at least one control circuit to a specific desired value (Y _{14 w),} wherein the correction via the knife cylinder (K ₄ ) by means of a controller (4.1), which specifies an angle setpoint (α _{4 w} ) or angular velocity setpoint for angular control or speed control of the knife cylinder (K ₄ ). Method for controlling the cut register of a rotary printing press, in which for controlling the cut register a specific image information or measurement marks of the printed web is detected by at least one sensor (5, 6) and fed to a control device (2), characterized in that this detection of image information or Measuring marks immediately before or on a knife cylinder (K ₄ ) is performed that determined from this detected value of the cutting register error and that from this cut register error, the speed (ν ₃ ) at least one before the knife cylinder (K4) lying clamping point (K ₃ ) is affected. A method according to claim 3, characterized in that a partial register error ( Y * / 13) is controlled by means of at least one control loop to a specific setpoint, wherein the output of a controller (3.2) is the angular velocity for the nip 3 (K ₃ ) and a controller (3.1) supplies the associated setpoint value ( Y * _{13 w} ) for this subordinate controller (3.2) in accordance with the setpoint value for the total register error ( Y _{14 w} ), in particular in accordance with the setpoint value Y _{14 w} = 0. A method according to claim 3, characterized in that when using at least two non-printing nips (K _i , K _k ) and their velocities (ν _i , v _k ) associated control loops so coordinated, in particular over or under superimposed that the total -Circuit error ( Y ₁₄ ) to the setpoint Y _{14 w} , in particular Y _{14 w} = 0, is controlled. A method according to claim 3, characterized in that the control of the angular position of the pressure units (K1) on exceeding the limits (3.6) of the manipulated variable (ω _{3 w} ) in controlling the partial register error ( Y * ₁₃ ) from the controller (3.1) to a Controller (1.1) is passed, so the angle of the terminal point 1 (K ₁ ) tracked and the too small or too large value of (ω _{3 w} ) is moved back into the allowable range. A method according to claim 5, characterized in that the control of the angular position of the printing units (K1) when exceeding the limits of several manipulated variables ( ν _i , ν _k ) in controlling the part register errors ( Y _{l i} *, Y * _ik ) of associated controllers is transferred to a controller (1.1), so the angle of the terminal point 1 (K ₁ ) tracked and the too small or too large setpoints ( ω _iw , ω _kw ) are moved back into the allowable range. Method according to one of claims 1 to 7, characterized in that a tracking of the angle of the nip 1 (K ₁ ) by an adjustment member (1.2) for all operating states takes place, in which the angular velocity (ω _{3 w} , ω _iw , ω _kw , ) of the clamping points (K ₃ , K _i , K _k ) is within the limits (3.5), whereby a setpoint for the adjustment of the angle (α _{1 w} ) is calculated using a mathematical model, whereby always sufficient reserve of the manipulated variables (ν ₃ , ν _i , ν _k ) of the clamping points (K ₃ , K _i , K _k ) is ensured. A method according to claim 8, characterized in that calculated in the mathematical model, the relationship between the necessary for the corrections of the partial register errors ( Y * ₁₃ , Y * _{l i} , Y * _ik ) Voreilungsänderungen and the resulting correction value (α _{1 w} ) becomes. A method according to claim 7 or 8, characterized in that the tracking of the angle of the nip 1 (K ₁ ) by the adjustment member (1.2) for all operating conditions in which (ω _{3 w} , ω _{i w} , ω _kw ) within the prescribed limits (3.5), takes place slowly with respect to the control of ( Y * ₁₃ Y * _{l i} , Y * _ik ), which prevents duplication due to too rapid changes in position of the printing units (1) and decoupling of the control circuits is achieved. Method according to one of claims 5 to 10, characterized in that a tracking of the particular angle-controlled clamping point 2 (K ₂ ) - - or subsequent clamping points - angle synchronous to the nip 1 (K ₁ ) made and thereby the web time constant between terminal point 1 (K ₁ ) and terminal point 2 (K ₂ ) - or between terminal point 1 (K ₁ ) and all subsequent terminal points - become ineffective. Method according to one of claims 1 to 11, characterized in that for tracking the web tension ( F ₂₃ ) - or more web tension - using a dancer roller or pendulum roller, the measured force ( F ₂₃ ) fed to a web tension controller (7.1) as an actual value and with a Force setpoint ( F _{23 w} ) is compared, wherein the output of the controller (7.1) either directly the manipulated variable for the force F ₀₁ changing adjusting device (7.3) or the desired value ( F _{01 w} ) for a subordinate controller (7.2) for the input -Bahnzugkraft ( F ₀₁ ) is, so that by this force adjustment always occurred due to the regulation of a fault force change in the section between the terminal points (K ₂ and K ₃ ) or the force changes in the sections between more terminal points. Method according to one of claims 1 to 12, characterized in that the tracking of the web tensile force ( F ₂₃ ) is carried out by means of a web tension control loop, wherein the web tensile force ( F ₀₁ ) by means of a sensor (9) is measured and the output of the web tension control proportional to Circumferential speed of at least one of the mass flow influencing, lying in front of clamping point is. Method according to one of Claims 1 to 13, characterized in that the control loops superimposed on one another, in particular in cascade structure, can be put into operation incrementally, an identification method determining all data of the mechanical controlled system during standstill or operation without and with a continuous paper web and the controllers can be optimized according to analytical optimization equations, the optimization can be computer-aided or fully automatic, in particular with the help of a simulation program on which the entire system is shown [after block 1 a, 1 bund 2] (according to Fig. 2), the simulation off online or in real time on-line. Method according to one of claims 1 to 14, characterized in that the manipulated variable used is the peripheral speed of the unwinding device which determines the stationary and transient mass flow introduced into the system. A method according to claim 15, characterized in that the peripheral speed is influenced by means of at least one measured value for a web tensile force, web tension or web elongation, in particular by the position of a force acting on the web ( F ₀₁ ) dancer or pendulum roller, or by means of a Force (F ₀₁ ) regulating web tension control loop. A method according to claim 3, characterized in that the control of the angular velocity of the cooling unit (K3) when exceeding the limits (3.6) of the manipulated variable (ω _{3 w} ) in controlling the partial register error ( Y * ₁₃ ) from the controller (3.1) to a Controller (2.1) is passed, so the lead of the terminal point 2 (K ₂ ) tracked and the too small or too large value of (ω _{3 w} ) is returned to the allowable range. A method according to claim 5, characterized in that the control of the lead of the cooling unit (K2) when exceeding the limits of several manipulated variables ( ν _i , ν _k ) in controlling the partial register errors ( Y _{l i} , Y * _ik ) of associated controllers on a controller (2.1) is passed, so the lead of the terminal point 2 (K ₂ ) tracked and the too small or too large setpoints ( ω _iw , ω _kw ) are reduced in the allowable range. Method according to one of claims 1 to 18, characterized in that a tracking of the lead of the nip 2 (K ₂ ) by an adjustment member (2.2) for all operating conditions takes place in which the angular velocity (ω _{3 w} , ω _iw , ω _kw ) The clamping points (K ₃ , K _i , K _k ) is within the limits (3.5), wherein a setpoint for the adjustment of the speed (ν _{2 w} ) is calculated using a mathematical model, whereby always sufficient reserve of the manipulated variables (ν ₃ , ν _i , ν _k ) of the clamping points (K ₃ , K _i , K _k ) is ensured. A method according to claim 19, characterized in that calculated in the mathematical model, the relationship between the necessary for the corrections of the partial register errors ( Y * ₁₃ , Y * _{l i} , Y * _ik ) Voreilungsänderungen and the resulting correction value (ν _{2 w} ) becomes. A method according to claim 19 or 20, characterized in that the tracking of the advance of the nip 2 (K ₂ ) by the adjustment member (2.2) for all operating conditions in which (ω _{3 w} , ω _iw , ω _kw ) within the prescribed limits ( 3.5), takes place slowly with respect to the control of ( Y * ₁₃ , Y * _{l i ,} Y * _ik ), whereby a decoupling of the control circuits is achieved. Method according to one of claims 5, 17 to 21, characterized in that a tracking of terminal points after the cooling unit up to the one that controls the partial cut register, synchronously to the nip 2 (K ₂ ) is made in such a way that thereby the web time constant between Terminal 2 (K ₂ ) and these subsequent terminal points are ineffective. Device for controlling the cut register, in particular according to claim 1 to 24, on a rotary printing machine whose clamping points (K ₁ to K ₄ ) with drive motors with associated current, speed and optionally angle control are independently drivable and in the overall cut register and / or associated further partial cutting register deviations (Y * _13, Y * _{l i,} Y * _ik) on or before a knife cylinder (K ₄₎ and / or on or before one or more of that knife cylinder (K ₄₎ upstream clamping points (K ₁ to K ₃ , K _i , K _k ) can be detected via a specific image information or measuring marks of the printed web by means of at least one sensor (5, 6) and to influence the cutting register error ( Y ₁₄ ) of a regulating and / or control device (2). for changing angular positions or peripheral velocities (v ₁ to v ₄ , ν _i , ν _k ) of the respective clamping point (K ₁ to K ₄ , K _i , K _k ) can be fed. Apparatus according to claim 23, characterized in that the sensors (5; 6) and associated evaluation devices at the nominal speed of the printing press information about the register or the register error ( Y ₁₄ ; Y * / 13; Y * / l i ; Y * / ik ) provide in a minimum of time and are implemented with interfaces which transmit the register errors register errors ( Y ₁₄ , Y * ₁₃ , Y * _{l i} , Y * _ik ) over field buses, Ethernet or other communication buses or communication interfaces. Device according to one of claims 23 or 24, characterized in that the control and / or control device (2) as a central computer, preferably in the control room, or as an embedded computer, preferably in a control or control cabinet, or functionally decentralized in the respective inverter devices is realized and all information (actual values, setpoints, Regelalgorythmen) can be processed in real time. Device according to one of claims 23 to 25, characterized in that a dancer roller system (7) with communication points (7.4, 7.5) is equipped. Device according to one of the preceding claims, characterized in that an unwinding device (K ₀ ) is controllable by means of dancer rolls or web tension control loops such that by means of the peripheral speed (ν ₁ ) of the nip ( K ₁ ) or by means of the web tensile force ( F ₀₁ ) transient and stationary, introduced into the system mass flow is changeable.

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