EP0567741B2 - Rotary printing machine - Google Patents

Abstract

In a rotary printing machine with directly driven cylinders and at least one directly driven folding unit (12), those drives of the cylinders and their drive controllers which can be assigned to a paper web are combined to form printing-station groups (2). The printing-station groups (2a-d) are connected to one another, to the folding unit (12) and to the operating and data-processing unit (1) via a data bus (3). Within the printing-station group (2), the individual drives of the cylinders and their drive controllers are connected via a high-speed bus system. The printing-station groups (2a-d) acquire their position reference directly from the folding unit (12). The master control system (1) is now responsible only for the presetting of desired values and desired-value deviations and the processing of actual values. The division of the overall control system into a master control system and autonomous printing-station groups (2) achieves that simplicity, flexibility and robustness in respect of faults which is necessary for producing a directly driven rotary printing machine.

Description

Technical field

The invention relates to the field of printing technology. It relates in particular to a rotary printing press with individually driven cylinders.

Such an individually driven rotary printing machine is on pages 78-80 of the magazine "Zeitungstechnik" from December 1991 described.

State of the art

With an individually driven rotary printing press drop the mechanical shaft connections (Longitudinal and standing shafts) as well as most gears path. Each cylinder is powered by a separate engine driven directly.

• erhöhte Passergenauigkeit,
• präzisere Druckergebnisse durch Wegfall von Getriebespielen,
• kein Umfangregister mehr notwendig, da die Lage der Antriebe untereinander verschoben werden können,
• vereinfachte mechanische Konstruktion der Rotationsdruckmaschine,
• erleichterte Erweiterungsmöglichkeit der Maschine.

In the above article, the technical development in the field of directly driven rotary printing presses is presented. The Swiss printing press factory Wifag tested the idea of a rotary printing press free of longitudinal shafts in the mid-1960s. However, the attempt failed because a stable run was not achieved in the lower speed range. The high accuracy requirements could therefore not be met. The company MAN Roland Druckmaschinen AG made a new start in 1978. The test machine successfully passed all tests. The requirements could also be met in terms of accuracy. The accuracy of the longitudinal shaft-driven, conventional rotary printing press was even exceeded. The advantages of a directly driven rotary press are many and include:

• increased register accuracy,
• more precise printing results by eliminating gear play,
• no more circumferential register necessary, since the position of the drives can be shifted among each other,
• simplified mechanical design of the rotary printing press,
• easier expansion of the machine.

Nevertheless, the principle of the single drive could not enforce. The reasons for this lie in the complexity the regulation of the individual drives, the networking the control system and the resulting Susceptibility to failure and limited flexibility of construction.

Presentation of the invention

The object of the present invention is now a to specify directly driven rotary printing press, which has the advantages mentioned above and the disadvantages of complexity, susceptibility to failure and the lack of flexibility of the control system due to its avoids special structure.

This task is done on a rotary press with the in claim 1 specified features solved.

By combining the individual drives and their drive controllers to any pressure point groups and by the fact that the pressure point groups their position reference from the folder relate, there is an entire control system, which is characterized by simplicity and flexibility.

a) die Einzelantriebe und deren Antriebsregler einer Druckstellengruppe über ein schnelles Bussystem, den Antriebsbus, verbunden sind;

b) die Druckstellengruppen untereinander und mit einer Bedienungs- und Datenverarbeitungseinheit über einen Datenbus verbunden sind, und

c) die Datenverarbeitungseinheit die Druckstellengruppen verwaltet, wobei

d) diese Verwaltung die Vorgabe von Sollwerten und Sollwertabweichungen und die Verarbeitung von Istwerten umfasst sowie die Sollwertführung der verschiedenen Druckstellengruppen untereinander und zum Falzapparat koordiniert;

e) der mindestens eine Falzapparat über den Datenbus mit den Druckstellengruppen verbunden ist.

In a first preferred embodiment, the rotary printing press according to claim 1 is used in an arrangement which is characterized in that

a) the individual drives and their drive controllers of a pressure point group are connected via a fast bus system, the drive bus;

b) the pressure point groups are connected to one another and to an operating and data processing unit via a data bus, and

c) the data processing unit manages the pressure point groups, wherein

d) this administration includes the specification of target values and target value deviations and the processing of actual values, and coordinates the target value management of the various printing point groups with one another and with the folder;

e) the at least one folder is connected to the printing point groups via the data bus.

The advantage of the construction according to the invention is that the entire control system of the rotary printing press by summarizing the Single drives to any pressure point groups a fast bus system very simple and insensitive to faults becomes. The individual pressure point groups are independent of each other and get their position reference from the folder assigned to them. The Management of the pressure point groups is done via a superordinate control system and only includes the Specification of setpoints and setpoint deviations as well as the processing of actual values.

The entire control system of a direct drive Rotary printing press is so complicated because because the cylinders at a cylinder peripheral speed positioned from 13 m / s to 0.05 mm Need to become. At the data transfer speed of the connecting bus system are in equally high demands. First the division of the entire control system according to the invention in drive groups, the components of which over a fast bus system are connected, for the time-critical Regulation and a higher-level control system, which a lower data transfer speed without problems may have for which non-time-critical tasks such as the specification of target values and setpoint deviations as well as processing of actual values, allowed despite the high accuracy requirements a simple and robust construction.

Because the individual pressure point groups are their reference obtain from the assigned folder and the Position of the entire group in relation to the folder is not a main register more necessary. Another advantage of the invention The arrangement is that the machine is flexible can be configured because no consideration mechanical connections must be made. The whole control system is not totally networked, but rather has clear interfaces. That’s what it is insensitive to interference e.g. a single drive, because such only a single pressure point group affect.

The essence of the invention is therefore a directly driven one Rotary press to specify the characterized by simplicity and robustness of the control system. This is achieved by having the whole The control system is divided into autonomous pressure point groups and a superordinate control system. The individual drives the cylinder and its drive controller inside a pressure point group are via a fast bus system, adapted to the time-critical tasks, connected. The pressure point groups are among themselves and with the superordinate control system over a superordinate one Bus system connected. This bus system can have a lower data transmission speed, since it is just time-critical tasks to deal with Has. The pressure point groups get theirs Position reference directly from the assigned folder. The relative position of the cylinders of a pressure point group each other becomes independent of the parent Control system set via the fast bus system. The individual pressure point groups point during the Operation so a high degree of autonomy.

Through the aforementioned division of the entire control system in a superordinate control system and autonomous Pressure point groups, shows the whole Control system that degree of simplicity, flexibility and robustness against disturbances, which for the realization of a directly driven rotary printing machine necessary is.

From the totality of the dependent claims further advantageous embodiments result.

Brief description of the drawings

The following is the invention based on exemplary embodiments in connection with the drawings explained in more detail.

Fig. 1

ein Blockdiagramm einer erfindungsgemässen direkt angetriebenen Rotationsdruckmaschine,

Fig. 2

ein Blockdiagramm einer erfindungsgemässen Druckstellengruppe,

Fig. 3

ein Schema der erfindungsgemässen Zuordnung der Druckstellengruppen auf den Falzapparat.

Show it:

Fig. 1

2 shows a block diagram of a directly driven rotary printing press according to the invention,

Fig. 2

2 shows a block diagram of a pressure point group according to the invention,

Fig. 3

a diagram of the assignment of the pressure point groups according to the invention on the folder.

The reference numerals used in the drawings and their meaning are in the list of names summarized listed. Basically are in the figures have the same parts with the same reference numerals Mistake.

Ways of Carrying Out the Invention

With an individually driven or longitudinal shaft-free Rotary printing machine like every cylinder, in particular the impression and impression cylinders as well as the Folder powered by its own electric motor. As a result, the mechanical connections fall path. Of course, the individual drives must be on top of each other be coordinated. Because of the high demands the connecting accuracy must be met Bus system has a high data transmission speed exhibit. The most obvious approach all drives with a single higher-level central unit to regulate, fails because of the complexity and the limited flexibility. In the case of the Rotary press is now one of a kind other approach. This is said to be related are explained with the figures.

FIG. 1 shows a block diagram of a rotary printing press according to the invention. It has k pressure point groups (2a-d), which are connected via a data bus (3) both to the operating and data processing unit (1) and to the folder (12). The individual drives of the cylinders and their drive controllers are combined into pressure point groups (2a-d). Only these pressure point groups (2a-d) are connected to the operating and data processing unit, ie to the higher-level control system (1). The printing point groups obtain their position reference directly from the folder (12). So you have a high degree of autonomy.

FIG. 2 shows a block diagram of an individual pressure point group (2). There are n individual drives (7a-d) and associated n drive controllers (6a-d). The drive controllers (6a-d) are connected to a drive system (4) via a fast bus system, the drive bus (5). The drive system (4) is connected to the data bus (3). The positioning of the individual drives (7a-d) in relation to the folder (12) and relative to one another is regulated in the drive system (4). In addition, the data and commands coming from the higher-level control system (1) are adapted in the drive system (4) to the form required for the drive controllers (6a-d). Global control via the data bus (3) can therefore be limited to the specification of setpoints, setpoint deviations and actual values, and setpoint control. The parameters for the fine adjustment of the individual drives (7a-d) are calculated separately in each pressure point group (2a-d) in the drive system (4).

In addition to the n drives and drive controllers (7a-d or 6a-d) there are m input / output units (9a-d). They are connected to a control system via a control bus (8) (10) connected. This control system (10) is in turn connected to the data bus (3). The control system (10) coordinates the input / output units (9a-d) with each other and with the parent Control system (1). Again it becomes clear how figuratively speaking, the responsibility of the parent Guidance system to the to a large extent autonomous Pressure point groups is delegated. Thereby can make the entire control system easier and more flexible being constructed.

Figure 3 finally shows schematically how the pressure point groups (2a-e) are assigned to a folder (12). Of course, there may also be a plurality of folding apparatuses (12) and the printing point groups (2a-e) can be assigned to different folding apparatuses (12). For the sake of simplicity, however, the situation is shown in FIG. 3 with only one folder (12). The folder (12), like the cylinders of the pressure point groups (2a-e), is driven individually with a separate folder drive (13). The individual pressure point groups (2a-e) obtain their paper from the paper unwinds (11a-f). The printed paper web is cut and folded in the folder (12) and, for example, combined into complete newspapers. Those individual drives of the cylinders preferably form a pressure point group (2a-d) which can be assigned to a common paper web. With the individual drives of the cylinders, however, subgroups can also be formed, so that one printing point group (2e) can print several, for example two, paper webs simultaneously.

In conclusion, it can be said that the Directly driven rotary printing machine according to the invention because of the separation of the whole Control system in a superordinate control system and autonomous Pressure point groups through simplicity and flexibility honors and thus fulfills the requirements, which for the economical operation of a directly driven Rotary printing press are necessary.

name list

1

Operating and data processing unit, superordinate control system

2

Bruises group

2a-e

k pressure point groups

3

bus

4

drive system

5

drive bus

6a-d

n drive controller

7a-d

n single drives

8th

control bus

9a-d

m input / output units

10

control system

11a-f

Paper unwind

12

folding

13

Folder drive

Claims (7)

1. Rotary printing machine, comprising

   a) a number of individually driven cylinders, the drives taking place by means of electric motors,

   b) at least one separately driven folding unit (12), and

   c) a master control system,
   characterized in that

   d) the master control system is divided into essentially antonomous printing-station groups (2a-d) and an overriding master control system (1),

   e) the overriding master control system (1) managing the printing-station groups (2a-d), and

   f) the printing-station groups (2a-d) being formed by any desired combination of individual drives of the cylinders (7a-d) and of their drive controllers (6a-d), and

   g) in that the printing-station groups (2a-d) are assigned to one of the folding units (12) and the printing-station groups obtain their position reference from this folding unit (12).
2. Rotary printing machine according to Claim 1, characterized in that

   a) the individual drives (7a-d) and their drive controllers (6a-d) of a printing-station group (2) are connected via a high-speed bus system, the drive bus (5),

   b) the printing-station groups (2a-d) are connected to one another and to an operating and data-processing unit (1) via a data bus (3), and

   c) the data-processing unit (1) manages the printing-station groups (2a-d),

   d) this management comprising the presetting of desired values and desired-value deviations and the processing of actual values and coordinating the desired-value command of the various printing-station groups (2a-d) relative to one another and relative to the folding unit (12),

   e) the at least one folding unit (12) is connected to the printing-station groups (2a-d) via the data bus (3).
3. Rotary printing machine according to Claim 2, characterized in that the folding unit (12) is connected to the printing-station groups (2a-d) not via the data bus (3), but via its own bus.
4. Rotary printing machine according to Claims 2 or 3, characterized in that the printing-station groups (2a-d) comprise

   a) a drive system (4) which is connected to the data bus (3) and to the n drive controllers (6a-d), the connection being made via the drive bus (5), and which coordinates the drive controllers (6a-d) to one another,

   b) a control system (10) which is connected to the data bus (3), and

   c) m input and output units (9a-d) which are connected to the control system (10) via a control bus (8), the management of the input and output units taking place in the control system (10).
5. Rotary printing machine according to Claim 1, characterized in that those individual drives (7a-d) of the cylinders and their drive controllers (6a-d) which can be assigned to a common paper web are combined to form a printing-station group (2).
6. Rotary printing machine according to Claim 1, characterized in that the printing-station groups (2a-d) are assigned to various folding units (12).
7. Rotary printing machine according to Claim 1, characterized in that the printing-station groups (2a-e) are divided into printing-station subgroups, and in that various paper webs can consequently be processed in a single printing-station group (2e).

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