EP1930161A2 - Method and device for controlling a processing machine - Google Patents

Abstract

The method involves having a drive system sensing a turning angle as a reference value and a signal sequence (reference signal) with a machine control unit provided. The reference value is used as a basis of the control unit taking into account the turning angle of individual units of the processing machine as a reference value per unit generated. The machine control unit is verified whether the signal and the reference value signal from the respective modules in a control unit of the machines stored are for a given angle for a clutch position. An independent claim is included for a device for controlling a processing machine.

Description

The invention relates to a method and an apparatus for controlling a processing machine for substrates according to the preambles of the independent claims. The method and the device are particularly suitable for controlling such a processing machine for substrates with a drive system, wherein the processing machine comprises at least one drivable assembly in the form of an inking unit, dampening unit, coating unit or a cylinder.

In processing machines for substrates, the print quality is adversely affected by vibrations and shocks. In sheet processing machines, for example, the point of use of the lifter of the inking unit of a printing unit leads to such impacts. At an unfavorable jacking point with respect to the channel of the plate / forme cylinder, a lift may cause banding in the pressure. It is therefore necessary that a disengaged inking unit is always engaged again in the same optimized geometric position. Since the inking unit clutch is usually only in one position per revolution can be coupled, is also located in a gear that rotates at a higher speed than the plate / forme cylinder (such as in the DE patent application 102006035713.2 shown) and the lifter cam gear rotates slower than the plate / forme cylinder, there are several possible positions for engagement. Incorrect engagement leads to the aforementioned loss of quality of the prints to waste accumulation. Disengaging and re-engaging to find the right dome position requires machine downtime.

Out DE 196 40 649 A1 a drive for a sheet-fed printing machine is known, which has a high flexibility with respect to simultaneously or at least out of phase executable processes. The cylinders and / or Drums and in particular the plate / form cylinder driven by a common gear train of at least one drive motor of a main drive. The plate / forme cylinders are each assigned a clutch and a controllable drive, by means of which the plate / forme cylinder independently of the other cylinders or drums depending on the switching states of the respective clutch can be driven in a predetermined manner.

It is an object of the invention to provide a method and an apparatus of the type mentioned above, which allow uncoupling and re-engaging an assembly in the form of an inking unit, dampening unit, coating unit, a cylinder in a drive system of the processing machine clearly and process stable.

The object is achieved with the features of the independent claims 1 and 15. Further developments emerge from the dependent claims.

A first advantage of the invention is that at least one assembly in the form of an inking unit, dampening unit or printing / coating unit or a cylinder, individually, in groups or together from a drive system, formed from main drive with gear train, the processing machine can be disengaged or can and in the respectively determined angular position, ie geometrically correct position, can be coupled to the drive system angle correlated or can.

As a second advantage can be mentioned that the operation is not limited to an assembly, such as an inking unit, a printing / coating unit. Rather, this procedure can also be implemented in processing machines with multiple printing units and / or multiple coating units and / or with at least one turning device for the substrate.

The third advantage results from the fact that when engaging a unique coupling position is realized and this Einkuppelposition is checked again. Thus, in addition to the process-stable engagement, the safety of the drive system is additionally increased. Furthermore, while avoiding waste and loss of production time, the respective assembly is correctly coupled into the drive system of the processing machine with angular correlation.

Should arise during engagement an ambiguous coupling position between the respective assembly and the drive system of the processing machine, the assembly is automatically disengaged again, the drive system is further rotatively driven by at least one motor and then the corresponding assembly is engaged again in a predetermined angular position. The process can be repeated several times until the coupling position is reached or an error message is issued.

As a fourth advantage can be shown that the disengagement and engagement of at least one module can be realized in any drive system of the processing machine.
According to a first drive principle, the drive system may be formed of a main drive, which comprises at least one drive (motor) and a continuous (closed) gear train.
According to a second drive principle, the drive system may be formed of a main drive with at least one drive (motor) and a continuous (closed) gear train for at least the cylinders leading the printing material and possibly the blanket cylinder. In the latter drive principle, at least one plate / forme cylinder of a printing unit is separated, ie mechanically separated from the main drive with at least one drive and a continuous gear train driven. The term plate / forme cylinder also includes form cylinders for flexographic printing units or coating units.

Fig. 1

das Blockschaltbild einer Vorrichtung zum Kuppeln eines Farbwerks einer Bogenverarbeitungsmaschine,

Fig. 2

ein Druckwerk mit einem Antriebssystem, gebildet aus Hauptantrieb und Räderzug,

Fig. 3

ein Druckwerk mit einem Antriebssystem, gebildet aus Hauptantrieb und Räderzug und separat angetriebenem Platten-/Formzylinder,

The invention will be explained in more detail below using an exemplary embodiment. Here are shown schematically:

Fig. 1

1 is a block diagram of an apparatus for coupling an inking unit of a sheet processing machine;

Fig. 2

a printing unit with a drive system, formed from main drive and gear train,

Fig. 3

a printing unit with a drive system, formed from main drive and gear train and separately driven plate / forme cylinder,

The in the FIG. 1 Sheet processing machine 1 shown contains four printing units 2 to 5 and a paint module 6. Furthermore, the sheet processing machine 1 a feeder 7, a system 8 and a display 9.
Each printing unit 2 to 5 contains as an assembly an inking unit 10 to 13, which can be coupled by means of a clutch 14 to 17 with the drive system 40, especially a main drive 40 with gear train, the sheet processing machine 1. More detailed exemplary embodiments of the inking units 10 to 13 and couplings 14 to 17 may already mentioned above DE patent application 102006035713.2 be removed.
At each printing unit 2 to 5 (alternatively inking unit 10 to 13) is a first sensor 18 to 21 for the actual value rotational angle detection and the drive system 40, a second sensor 22 is arranged as a reference sensor for the target value rotational angle detection. The second sensor 22 is according to Fig. 1 at the plant 8, which is part of the drive system 40, arranged. Furthermore, the second sensor 22 can be provided on the delivery 9. This variant is in the FIG. 1 dashed with indicated. The second sensor 22 can be arranged on any element of the drive system which can not be disconnected from the drive system.

All sensors 18 to 22 are circuitry and data guided on a machine control unit 23, which is connected to a central computer 24. With the control computer 24 is still a monitor 25 and an operator keyboard 26 in connection. It is still located at each printing unit 2 to 5, an operator keyboard 27 to 30, which is performed circuit and data technology on the machine control unit 23 and are.

According to the Fig. 2 and 3 is the printing unit 5 with a sheet guiding cylinder 39, here formed as a pressure cylinder, a blanket cylinder 38 and a plate / forme cylinder 37 shown. The plate / forme cylinder 37 is assigned as an on / auskuppelnde assembly the inking unit 13 and, if necessary, a dampening unit 31. The dampening unit 31 may be coupled with the drive of the inking unit 13 in terms of transmission technology. The inking unit 13 comprises a Farbdosiereinrichtung 32, for example, an ink fountain with dosing and a Farbduktor, a Farbzuführeinrichtung 33, for example, a color lifter, and a compactor, formed from Farbreiberwalzen 34, transfer rollers and inking rollers 35th

For example, the printing unit 5 after the Fig. 2 incorporated in a drive system 40 of the processing machine, which is formed of a main drive 40 (with at least one feeding drive motor) and a continuous, ie a closed, gear train. The drive system 40 thus extends at least to the printing units 2 to 5 and the paint module 6 of the processing machine, wherein the plate / forme cylinder 1, a drive to the on / off assembly, here at least one of the inking units 10 - 13, can be fed.
In the training gem. Fig. 2 includes such an assembly, here the inking unit 13, a drive wheel 36 which is coupled to the drive gear (not shown) of the plate / forme cylinder 37 geared.

The printing unit 5 after the Fig. 3 is incorporated in a drive system 40 of the processing machine, which is formed of a main drive 40 (with at least one feeding drive motor) and a gear train. In addition, a single drive 41 is arranged on the plate / forme cylinder 37. Main drive 40 (with at least one feeding drive motor) and gear train extend over the sheet guiding cylinder 39 to the blanket cylinder 38, however, the plate / forme cylinder 37 - at least mechanically separated from the main drive 40 with gear train at least during printing - directly connected to the single drive 41.

Alternatively, the plate / forme cylinder 37 may be coupled to the main drive 40 on the drive side, wherein the plate / forme cylinder 37 is associated with a clutch and the plate / forme cylinder 37 is temporarily driven by means of an auxiliary drive. In the training gem. Fig. 3 includes such an assembly, here the inking unit 13, a drive wheel 36 which is coupled to the drive gear (not shown) of the plate / forme cylinder 37 geared.

For example, the coupling of the inking unit 10 of the printing unit 2 to the drive of the sheet processing machine 1 is started on the control panel 26. The following steps are controlled by a program stored in the machine control unit 23.

From a drive system 40, especially the main drive 40 with gear train, a rotation angle is detected as a reference value, here by means of the sensor 22, and fed to a machine control unit 23 in a signal sequence (reference signal). Based on the signals of the reference value, a signal value simulated taking into account the angular offset of the individual units (printing units 2-5, coating module 6) is generated for each module by means of the machine control unit 23 as the reference value per module.
In the engaged state of the assembly, for example, one of the inking units 10 to 13, a rotation angle is detected as the actual value at this sensor, here by means of at least one of the sensors 18 -21 and fed as a signal (lstwert signal) of the machine control unit 23 and in the machine control unit 23, it is checked whether the actual value signal and the simulated reference value signal of the respective module in a stored in the machine control unit 23 predetermined angular range for a clutch position.
Preferably, the check in the machine control unit 23 after an intervention in the coupling state of the module or after switching off the processing machine done.

Preferably, the check can be carried out in the machine control unit 23 following a set-up procedure.
Preferably, the check of the clutch position by the engine control unit 23 may be carried out at a low engine speed, and then, by means of the engine control unit 23, the engine speed is increased to a speed provided for the endurance (pressure operation).

In the absence of the actual value signal and the simulated reference value signal, the machine control unit 23 preferably outputs a diagnostic message, for example to the monitor 25, in a predetermined angular range.
Preferably, the dome position of an inking unit 10 to 13, dampening unit 31, plate / forme cylinder 37 or printing coater 2 to 5; 6 to the drive system 40, especially the main drive 40 to be checked.
Preferably, in the event of a deviation of the signal values from the prescribed angular range of the rotation angle detection, the relevant assembly is disengaged, the drive system 40 is activated and, offset by a specific angle of rotation, the drive system 40 is coupled again to the assembly.

On the drive system 40 or here the system 8, a second sensor 22 is arranged as a reference value sensor and coupled switching and data technology with a machine control unit 23. Each drive side, a clutch 14, 15, 16, 17 having assembly 2, 3, 4, 5; 10, 11, 12, 13 (if necessary, a coating unit 6, a plate / forme cylinder 37) each include a first sensor 18, 19, 20, 21 as an actual value sensor, the circuit and data technology is coupled to the machine control unit 23 , In the machine control unit 23 is verifiable whether an actual value signal supplied by at least one of the sensors 18, 19, 20, 21 and the reference value signal of the respective module reproduced by means of machine control unit 23, here the modules 2, 3, 4, 5; 10, 11, 12, 13, in a stored in the machine control unit 23, predetermined angular range for a clutch position.

In a preferred embodiment, when the clutch position is present in the stored, predetermined angular range of the machine control unit 23 of the continuous printing operation can be released.
In the absence of the coupling position in the stored, predetermined angular range of the machine control unit 23, an error message is preferably generated and the disengagement / engagement of the respective assembly 2, 3, 4, 5; 10, 11, 12, 13, optionally 37, 31 and 6, to the drive system 40, here the Appendix 8, is repeatable.

Preferably, the machine control unit 23 with a control computer 24 circuit and data technology connected and the output side with an actuating element of the respective module 2, 3, 4, 5; 10, 11, 12, 13, optionally 37, 31 and 6, to the drive system 40, here the system 8, disengaging / coupling clutch 14, 15, 16, 17 connected circuit and data technology. Furthermore, the control computer 24 with a monitor 25 and an operator keyboard 26 circuit and data technology in conjunction and an operator keyboard 27, 28, 29, 30 of the respective module 2, 3, 4, 5; 10, 11, 12, 13, optionally 37, 31 and 6, is performed on the machine control unit 23 circuit and data technology.

In a further embodiment, for example, the first sensor 18, 19, 20, 21 arranged on a multi-speed drivable component of an inking unit 10, 11, 12, 13. The first sensor 18, 19, 20, 21 is preferably arranged on a lifting cam of an inking unit 10, 11, 12, 13.
Alternatively, the first sensor 18, 19, 20, 21 may be arranged on a multi-speed drivable component of a dampening unit 31.

In a further embodiment, the first sensor 18, 19, 20, 21 may be arranged on a multi-speed drivable component of a plate / forme cylinder 37. Alternatively, the first sensor 18-21 may be arranged on a Verreibungsgetriebe, which is coupled, for example, with the drive gear 36, the respective inking unit 10-13.

The second sensor 22 is arranged on an element which can not be disconnected from the drive system 40 of the processing machine and senses the rotation angle as a reference value.

The mode of operation is as follows: At a first speed of the processing machine 1, for example of 300 sheets per hour, a simulated signal sequence stored in the machine control unit 23 is synchronized with the signal sequence of the second, on the drivable system 8 (part of the drive system or main drive 40 ) arranged sensor 22 traveled. The first sensor 18 and also the sensors 19 to 21 are matched with the second sensor 22 with respect to the rotational speeds of the elements scanned by them. Since the scanned by the first sensor 18 Heberkurvenscheibe in the drive of the inking unit 10 with a translation i = 3, ie a third speed, compared to the plate / forme cylinder 37 and the system 8 is operated, the second sensor 22 is formed 3-tour. That is, the second sensor 22 begins a new cycle only after three revolutions of the drive of the system 8, that is, when the lift cam has made a full turn. The second sensor 22 serves as a reference for the simulated signal sequence.

Upon reaching a first simulated signal value, which is stored in the machine control unit 23, for example, the inking unit 10 is coupled. For this purpose, the machine control unit 23 controls the actuating device of the clutch 14 accordingly.

Then the coupling position is checked. This is done at a second speed of the sheet processing machine 1, which may be preferably higher than the first speed (for example, 300 sheets per hour for stopping the simulated signal sequence stored in the machine control unit 23 in synchronism with the signal sequence of the second sensor 22) and, for example, 700 sheets per Hour is.

It is checked whether a signal value for the coupling of the first sensor 18 and the first modeled signal value are in a prescribed angular range. In the event that the two signal values are not within the predetermined angular range, the inking unit 10 is disengaged at a second (from the machine control unit 23) simulated signal value. The second mimicked signal value is higher than the first mimicked signal value, whereby the inking unit 10 is disengaged by an angle with respect to the last dome position. Now the coupling process already described, including verification of the coupling position, is repeated. After, for example, four unsuccessful dome attempts, the method is aborted and preferably an error message is output on the monitor 25 with the instruction to check mechanics and electrics.
Advantageously, before starting the working principle, the assembly to be coupled is decoupled from the drive system 40 at a third mimicked signal value, this signal value conveniently coinciding with the second mimicked signal value. Optionally, the assembly is already in the position corresponding to the third replicated signal value from a previous disengagement.
In the manner described, a plurality of inking units 10 to 13 can be successively coupled in a sequence predetermined by the machine control unit 23. The order has been stored in the engine control unit 23. Likewise, the respective replicated signal values for the inking units 11 to 13 are stored. The first simulated signal values result from the sheet transport paths between each two adjacent printing units 2 to 5.
The invention has been described using the example of on / disengageable inking units 10 to 13. It is for example also for the coupling of dampening units 31, plate / forming cylinders 37 or printing / coating units 2 to 5; 6 applicable. Also, the application in processing machines with separately driven assemblies (single drive) is possible.

In summary, the following operating principle exists: starting from a processing machine to be controlled for printing substrates with a drive system and an assembly that can be engaged / disengaged for the drive system, the drive system senses a rotation angle as the reference value and supplies it in a signal sequence (reference signal) to a machine control unit. Based on the signals of the reference value, a signal value simulated in consideration of the angular offset of the individual units of the processing machine is generated for each module by means of the machine control unit as a reference value per module. In the engaged state of the module, a rotation angle is detected as an actual value at this sensor and fed as a signal (feedback signal) of the machine control unit and in the machine control unit is checked whether the lstwert signal and the simulated reference value signal of the respective module in a in the Machine control unit stored predetermined angular range for a clutch position.

In a development, a plurality of assemblies 2 - 6 can be sequentially coupled to the drive system 40 in an order predetermined by the machine control unit 23.

LIST OF REFERENCE NUMBERS

1

Sheet processing machine

2

printing unit

3

printing unit

4

printing unit

5

printing unit

6

coating module

7

investor

8th

investment

9

display

10

inking

11

inking

12

inking

13

inking

14

clutch

15

clutch

16

clutch

17

clutch

18

first sensor

19

first sensor

20

first sensor

21

first sensor

22

second sensor

23

Engine control unit

24

control center computer

25

monitor

26

keyboard

27

keyboard

28

keyboard

29

keyboard

30

keyboard

31

dampening

32

ink metering

33

ink supplement

34

Ink distributor roller

35

Inking roller

36

drive wheel

37

Plate / form cylinder

38

Blanket cylinder

39

Sheet guiding cylinder (impression cylinder)

40

Drive system (main drive with gear train)

41

individual drive

i

ratio

Claims (25)

Method for controlling a processing machine for substrates with a drive system and an assembly that can be coupled / uncoupled to the drive system,
characterized,
that a rotational angle is detected by a drive system as a reference value and supplied in a signal sequence (reference signal) to a machine control unit,
that, starting from the signals of the reference value by means of the machine control unit, a signal value simulated in consideration of the angular offset of the individual units of the processing machine is generated as a reference value per module for each module,
that in the coupled state of the module at this sensory a rotation angle detected as an actual value and as a signal (feedback signal) of the machine control unit is supplied and
in that it is checked in the machine control unit whether the actual value signal and the simulated reference value signal of the respective assembly lie in a predetermined angular range for a coupling position stored in the machine control unit. Method according to claim 1,
characterized,
that the check in the machine control unit takes place after an intervention in the dome state assembly or after a shutdown of the processing machine. Method according to claim 1,
characterized,
that the check in the machine control unit takes place after a set-up procedure. Method according to claim 1,
characterized,
that the check of the clutch position by the engine control unit takes place at a lower engine speed and then the machine speed is increased by means of the engine control unit to a speed provided for the endurance run. Method according to claim 1,
characterized,
that is issued a diagnostic message in the absence of the actual value signal and the simulated reference value signal in a predetermined angular range. Method according to claim 1,
characterized,
that the coupling position of an inking unit, dampening unit, plate / forme cylinder, printing unit or coating unit is checked to the drive system. Method according to claim 1,
characterized,
in the event that the signal values deviate from the prescribed angular range of the rotational angle detection, the relevant assembly is disengaged, the drive system is activated and, by a certain angle of rotation, the drive system is coupled to the assembly again. Method according to claim 1,
characterized,
that the checking of the coupling position of the drive system and to be coupled Direction assembly at a second speed of the processing machines he follows. Method according to claim 1,
characterized,
that in the absence of the two signal values in the predetermined angular range, the relevant assembly is disengaged from the drive system at a second simulated signal value and the method steps are repeated according to claim 1. Method according to claim 9,
characterized,
that after a number of repetitions of process steps, the process aborted and an error message is output. Method according to claim 1,
characterized,
in that, before starting the method, the assembly to be coupled is disengaged from the drive system at a third simulated signal value. Method according to claim 1,
characterized,
in that a plurality of assemblies are coupled successively to the drive system in an order predetermined by the machine control unit. Method according to claim 1,
characterized,
that the rotational angle sensed as a reference value is detected by an element which can not be disconnected by the drive system. Method according to at least claim 1,
characterized,
in that the assembly which can be coupled to the drive system is designed as an inking unit, a dampening unit, a plate / forme cylinder or a printing / coating unit. Device for controlling a processing machine for substrates with a drive system and an assembly that can be coupled / disconnected to the drive system,
characterized,
is that a second sensor (22) arranged on the drive system as a reference sensor and circuitry and data technology with a machine control unit (23) coupled,
in that each assembly (2, 3, 4, 5, 10, 11, 12, 13) having a coupling (14, 15, 16, 17) has a respective first sensor (18, 19, 20, 21) as the actual value sensor includes, the switching and data technology is coupled to the machine control unit (23) and that in the machine control unit (23) is verifiable, whether one of at least one of the sensors (18, 19, 20, 21) supplied actual value signal and by means of machine control unit (23) simulated reference value signal of the respective module (2, 3, 4, 5, 10, 11, 12, 13) in a predetermined angular range stored in the machine control unit (23) for a coupling position. Device according to claim 15,
characterized,
in that the machine control unit (23) is coupled to a control computer (24) in terms of circuitry and data and has an actuating element of a coupling (14 to 17) coupling the respective module (10 - 13; connected is. Device according to claim 15,
characterized,
that in the presence of the coupling position in the stored, predetermined angular range of the machine control unit (23) of the continuous printing operation is releasable. Device according to claim 15,
characterized,
that in the absence of the coupling position in the stored, predetermined angular range of the engine control unit (23) an error message is generiebar and the off / on engagement of the respective module (2, 3, 4, 5; 10, 11, 12, 13) is repeatable to the drive system , Device according to claim 15,
characterized,
in that the machine control unit (23) is connected in terms of circuit and data technology with an operating element of an assembly (2, 3, 4, 5, 10, 11, 12, 13) for the drive system Coupling (14, 15, 16, 17) is connected circuit and data technology,
that the control console computer (24) with a monitor (25) and an operator keyboard (26) circuit and data technology is connected and an operating keyboard (27, 28, 29, 30) of the respective module (2, 3, 4, 5; , 11, 12, 13) on the machine control unit (23) circuit and data technology is performed. Device according to claim 15,
characterized,
in that the first sensor (18, 19, 20, 21) is arranged on a component of an inking unit (10, 11, 12, 13) which can be driven by several revolutions. Device according to claim 20,
characterized,
in that the first sensor (18, 19, 20, 21) is arranged on a lifting cam of an inking unit (10, 11, 12, 13). Device according to claim 15,
characterized,
in that the first sensor (18, 19, 20, 21) is arranged on a multi-speed drivable component of a dampening unit (31). Device according to claim 15,
characterized,
in that the first sensor (18, 19, 20, 21) is arranged on a component of a plate / forme cylinder (37) which can be driven in a multi-turn manner. Device according to claim 15,
characterized,
that the first sensor (18 to 21) on a Verreibungsgetriebe an inking unit is arranged (10 to 13). Device according to claim 15,
characterized,
in that the second sensor (22) is arranged on an element which can not be uncoupled by the drive system of the processing machine.

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