Patent Application
20050120901
The invention lies in the field of printing machines and printing technology. More specifically, the present invention relates to a module for a machine for processing sheet printing materials, for example a sheet-fed rotary printing press.
A sheet-fed rotary printing press of the general kind is described in European published, prosecuted application EP 1 147 893 A2. The printing press comprises a sheet feeder, a sheet delivery and a plurality of substantially identically constructed basic modules arranged between them, which constitute the individual printing units of the sheet-fed rotary printing press. In EP 1 147 893 A2 the printing units are designated basic modules, which can be supplemented by a so-called multifunctional module. The multifunctional module is in that case arranged between the last basic module in the running direction and the delivery, this multifunctional module being provided to accommodate various additional devices. Such additional devices can be driers, foundering devices, punching devices and so on. No indications as to how to drive the individual basic modules and to control the same can be gathered from the published document. In particular, it does not reveal what settings become necessary for the purpose of configuration following the assembly of the individual basic modules to form a sheet-fed rotary printing press.
European patent EP 0 747 790 B1 (corresponding to U.S. Pat. No. 5,694,529) discloses a copier which is of modular construction. In that case, the copier has a computer (CPU) which is capable of detecting individual components of the copier. Here, the system is capable of adapting its operating software on the basis of the components detected and of providing appropriate functionalities on this basis. The system in this case follows the “plug and play” concept, as it is known, so that the user merely has to plug the components into the copier but the configuration of the copier is carried out automatically. In this case, the individual modules have a description of their capabilities and functions, which can be transmitted to the central CPU of the copier. As a result, after the individual modules have been plugged into the copier, the CPU can detect which components have been added or removed.
While the European application EP 1 147 893 A2 is entirely silent with regard to the configuration and commissioning of a modularly constructed sheet-fed rotary printing press, the modularly constructed copier according to EP 0 747 790 B1 (corresponding to U.S. Pat. No. 5,694,529) follows a central approach. In the copier, the detection of the individual modules is carried out by the central computer (CPU) on its own, while the individual modules cannot communicate with one another. The copier should therefore also be called modular only in the sense of additionally insertable components. The actual copier with its copying unit and the central control computer (CPU) cannot be changed; it is merely possible for attached parts to be added.
In the case of the configuration of modular sheet-fed rotary printing presses, however, such a central approach proves to be inadequate, since here there is no central unchangeable unit, since in principle every printing unit or every other modular unit can assume every position in the machine.
It is accordingly an object of the invention to provide a modular sheet-fed rotary printing machine, which overcomes the above-mentioned disadvantages of the heretofore-known devices and methods of this general type and which provides modules for a sheet-fed rotary printing press that permit automatic commissioning and configuring of a sheet-fed rotary printing press comprising such modules.
With the foregoing and other objects in view there is provided, in accordance with the invention, a module for a machine for processing sheet printing materials, comprising:
As compared with the prior art, the modules according to the invention are superior as a result of a memory unit which can be read and written and which is additionally connected to a communications device. The communications device is used to interchange data with a higher-order machine control system or to perform direct information interchange with further modules. By virtue of the memory unit and the communications device, in this way each module can be configured appropriately in accordance with its position in the sheet-fed rotary printing press; in addition both units can also undertake the control of the individual printing unit module. As a result, a sheet-fed rotary printing press can be expanded or shortened as desired, in that new modules are easily attached to modules already present or are connected between them or are removed. The modules which are then currently present can then interchange information about their capabilities via the communications device or, depending on the position of the individual module, can perform the appropriate settings in the module in order to obtain a serviceable sheet-fed rotary printing press.
In a first advantageous refinement of the invention, provision is made for the communications device to be suitable for interchanging data with further modules for the configuration of the machine. The communications device in the individual modules is needed not only for driving the individual modules during the operation of the press but, in particular, advantageously when the commissioning and configuration of the machine are concerned. In this case, the communications device can be used to transmit data directly to other modules for commissioning and also to receive data, so that the machine comprising a plurality of modules can configure itself automatically. In particular, in this case the positions of the individual printing unit modules can be communicated appropriately, it being possible for the manual entry of the individual printing unit positions by service personnel to be dispensed with. Furthermore, the modules can interchange data independently of a higher-order control system during normal printing operation, in order in this way to ensure the accurate angular synchronization of the individual printing modules.
Furthermore, provision is made for the module to have at least one standardized transport interface. In order to be able to join a plurality of modules together to form a serviceable sheet-fed rotary printing press or another sheet-processing machine, such as a modularly constructed folding machine, it is necessary for a trouble-free transfer of the sheets to be processed from one module to the next module to be possible. In order that the modules can be used flexibly, this transfer of individual sheets to an adjacent module must be possible without difficulty. This is served by a standardized transport interface which, for example, can comprise a sheet transfer cylinder whose grippers for picking up sheets are arranged in such a way that, when it is connected to an adjacent module, no collision with its grippers can occur during the sheet transfer. In this case, it is of course also necessary for the format widths of the cylinders of adjacent modules to agree. This standardized transfer naturally relates not just to printing unit modules but also to feeders, deliveries, varnishing units, and dryers and further processing modules, which likewise have the same standardized transport interface. These modules can thus be built up one after another in any desired order and transfer sheet printing materials to adjacent modules via the existing standardized transport interface. The transport interface can in this case be used both for sheet acceptance and also sheet transfer, but two separate interfaces for sheet acceptance and sheet transfer can also be present. These transport interfaces are in this case preferably constructed as sheet transfer drums, which accept the sheet from one printing unit module and discharge it to a further module. There can also be more than two transport interfaces per module, so that more than two modules can be attached to a module, in order for example to be able to produce a Y configuration. In this configuration, sheets are accepted at two interfaces on the module and are discharged to a further module via a third interface.
Furthermore, provision can be made for the module to have at least one interface for the power supply. This interface is preferably also standardized, so that the power supply can be provided without difficulty between various modules. If the power supply is provided electrically, each module has electric connectors via which the individual modules can be connected to one another. In this case, the electrical connection can be produced via an electric lead which connects the individual modules to one another, or the connectors on the modules are constructed in such a way that the modules can be plugged directly into one another. However, non-contact power transmission between individual modules is also possible without difficulty, since the modules stand beside one another without any gaps or at least at a quite small distance. A non-contact power supply can be implemented inductively or capacitively.
Provision is advantageously made for the module to have a dedicated drive motor. This drive motor can be an electric motor, but hydraulic or pneumatic drive units can also be used. If the module has a dedicated drive motor, then the module merely needs connections for the power supply and for the control of the module. The individual modules then do not need to be connected to one another via drive couplings, in order for example to produce a closed gear train between the individual printing unit modules as in the case of conventional sheet-fed presses. As a result of the dedicated drive motor in each module, a sheet-fed rotary printing press assembled from these modules automatically has individual drives. This therefore provides maximum flexibility when assembling the modules. Since the sheet printing materials have to be transported in accurate register through the machine comprising modules, any register deviations can also be corrected by means of the dedicated drive motors, if the motors are driven appropriately. In addition, the drive motors can be used for the purpose of making the commissioning of the modular machine easier, in that the drive motors move the respective module into a position such that the machine is immediately ready for accurate-register printing.
In addition or as an alternative to the embodiment having a dedicated drive motor, provision can be made for the module to have at least one drive interface. In the following text, a drive interface is understood to mean a device via which drive torques can be transmitted between individual modules. In this way, it is possible to synchronize modules with one another on the drive side, even mechanically. In addition, it is also possible to use modules which do not have dedicated drive motors and, instead, are driven concomitantly by adjacent modules. It is even conceivable here that, in a machine of modular construction, there has to be only one module with a dedicated drive motor, which then drives all the other modules without a dedicated drive motor via drive interfaces.
Provision is advantageously made for the drive interface to be a shaft end provided with a coupling. Modules which have a drive interface can in this way be connected to one another mechanically by means of a coupling, it being possible for a force-fitting coupling, for example an electromagnetic coupling, to be used instead of a pure form-fitting coupling. It is particularly advantageous if the coupling functions automatically, that is to say the couplings are engaged as soon as a module is attached to another module having a drive interface. A further possibility is for the couplings to engage only when the machine is configured. In the case of electrically, hydraulically or pneumatically driven couplings, this is possible via the control unit in the module.
In a further refinement of the invention, provision is made for there to be an automatic detection and configuration function. As soon as the individual modules are able to interchange data via their communications device, a detection and configuration program can run automatically, which coordinates the individual modules with one another and allocates appropriate functions to them corresponding to the respective position in the machine. In addition, such a detection and configuration program can of course also be started at the instigation of the service personnel by pressing a knob. In any case, the service personnel do not have to carry out the configuration themselves, since this job is taken from them by the modular machine. After the automatic detection and configuration program has been carried out, the machine is then released for operation.
Furthermore, provision can be made for the module to have a connection for attachment to a data bus system. A suitable data bus is, for example, a CAN bus, via which the individual modules can communicate with one another. The CAN bus can also be used as a control bus, via which rotational speed or angle set points for the drives of the individual modules can be predefined between the individual modules and a higher-order control computer. By means of the bus system, the exact system time can also be transmitted, in order to ensure the synchronization of the individual modules with one another. At the same time, via the data bus system, data can be interchanged between adjacent printing units, in order to compensate for actual value differences between these or to minimize oscillations. In this way, adjacent printing units are able to control out deviations separately from a higher-order machine control system by including the current actual values from the adjacent module.
Advantageously, provision is additionally made for the module to have a connection for the transport of ink or damping solution. In particular in the case of damping solution, which is needed in all the inking units of the individual modules, it is expedient to make a central supply to all the modules possible. For this purpose, the individual modules have line connections through which the damping solution can be transported from one printing unit to the next. Thus, it is then sufficient if one printing unit module is connected to a damping solution supply, since the damping solution can be transported to the further printing units from this printing unit module.
In a particularly advantageous refinement of the invention, provision is made for the module to have a wire-free transmitting and receiving unit. If the individual modules are equipped with wire-free transmitting and receiving units, the electrical connections for data transmission can be reduced to a minimum, for example in safety-relevant areas, or they can be dispensed with entirely. The data is then transmitted between the individual modules only in a wire-free manner, so that complicated cabling of the individual printing units with one another becomes superfluous. In this case, the wire-free transmitting and receiving unit can be designed using extremely different technologies, which can also still be combined with one another. One possibility is, for example, to equip all the modules with W-LAN or Bluetooth technology, in order in this way to permit wireless communication between the modules. In addition, any other type of radio data transmission is in principle suitable, if it meets the requirements on a sufficiently high data transmission rate. If time-critical commands for controlling the modules, such as synchronization commands, also have to be transmitted via the wire-free connection, then the radio data transmission must also meet the requirements with respect to real-time transmission. In this case, the transmitting and receiving unit can also include a satellite navigation instrument (GPS). As a modification of this solution, there can also be only one satellite navigation instrument, if recourse is had to conventional cabling. The satellite navigation instrument is used for determining the position of the individual modules, in order in this way to permit the configuration of the entire machine by the higher-order machine control system. In addition, provision is made for the module to have a connection to a pneumatic or hydraulic system. In addition to the possibility of providing each module with electric drives, pneumatic or hydraulic drives can also be used. Since, normally, some actuators on printing unit modules are actuated pneumatically, for example during a printing plate change, it must be possible for compressed air to be supplied to these actuators. For this purpose, the modules have connections for a pneumatic or hydraulic system in order to make compressed air or hydraulic oil available to the individual modules. It is therefore possible to be able to supply a plurality of modules from a single source, which means that each module does not need a dedicated pneumatic or hydraulic pressure generating system.
Moreover, it is of great advantage that the module has at least one transposition-safeguarded connection for a communication line. In order that no faults arising from erroneous cabling of control lines can occur during operation and during the configuration, it is expedient to provide at least the connections for the communication lines with transposition-safeguarded connections, for example those of different shapes. Therefore, the connections between the individual modules are protected against erroneous cabling, since each connection on a module can be connected only to the matching connection on a further module. For the service personnel, the construction of a press from a plurality of modules is made easier if the electric plug connections are designed to be safeguarded against transposition, since then erroneous connections between the individual modules can be prevented. Damage to the machine arising from erroneous cabling is therefore ruled out.
Other features which are considered as characteristic for the invention are set forth in the appended claims.
Although the invention is illustrated and described herein as embodied in a modular sheet-fed rotary printing press, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
Referring now to the figures of the drawing in detail and first, particularly, to
In the embodiment according to
The individual printing units 2 can receive their rotational speed or angle set points via the bus and supply system 9, or control commands, which are converted into appropriate set points in the printing unit computers 11 of the respective modules 2, are transmitted via the bus system 9. Furthermore, the bus system 9 contains a separate line, by means of which the exact system time (clock) is transmitted to the individual modules 2. By means of this system time, the synchronization of the movement of the electric drives 7 of all the modules 2 with a virtual line shaft is made possible, which leads to the avoidance of oscillations in the case of long machines 1 having very many, for example 16, modules 2. Via the bus system 9, the individual printing units can also interchange data in order, for example, to be able to control out differences in angle between adjacent printing units separately from other commands. Moreover, at least in critical modules 2, what are known as safety channels are integrated into the bus system 9, which permit a fault on these channels to be detected reliably. Safety channels transmit data in parallel on at least two channels, so that the transmitted data can be checked for deviations. If such a fault occurs, the affected module 2 is brought to a secure state, for example stopped, under the control either of its own printing unit computer 11 or of the higher-order control computer 10. In addition, an alarm can be triggered.
If a press 1 is to be started up, then the control computer 10 initially interrogates the individual modules 2. The data stored in the printing unit computer 11 about the properties of the associated module 2 is transmitted to the control computer 10, so that the latter can determine the configuration of the press 1. Such data includes, for example, the type and properties of the modules 2. As a result of interrogating the data, the control computer 10 calculates the overall configuration and, for example, determines the number of printing units/modules 2. These can be very different. For example, on one day, the press 1 may comprise three printing units 2 according to
This application claims the priority, under 35 U.S.C. § 119, of German patent application No. 103 57 429.8, filed Dec. 9, 2003; the entire disclosure of the prior application is herewith incorporated by reference.
| Number | Date | Country | Kind |
|---|---|---|---|
| 103 57 429.8 | Dec 2003 | DE | national |
