EP2033919B1 - Printing press with electric anti-crush protection - Google Patents
Printing press with electric anti-crush protection Download PDFInfo
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- EP2033919B1 EP2033919B1 EP08104733.4A EP08104733A EP2033919B1 EP 2033919 B1 EP2033919 B1 EP 2033919B1 EP 08104733 A EP08104733 A EP 08104733A EP 2033919 B1 EP2033919 B1 EP 2033919B1
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- components
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- movable
- printing material
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- 238000007639 printing Methods 0.000 title claims description 41
- 238000012546 transfer Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 208000034656 Contusions Diseases 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
- B65H31/12—Devices relieving the weight of the pile or permitting or effecting movement of the pile end support during piling
- B65H31/18—Positively-acting mechanical devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0018—Protection means against injury to the operator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/58—Article switches or diverters
- B65H29/585—Article switches or diverters taking samples from the main stream
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/32—Auxiliary devices for receiving articles during removal of a completed pile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/54—Auxiliary process performed during handling process for managing processing of handled material
- B65H2301/542—Quality control
- B65H2301/5421—Quality control taking samples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2407/00—Means not provided for in groups B65H2220/00 – B65H2406/00 specially adapted for particular purposes
- B65H2407/10—Safety means, e.g. for preventing injuries or illegal operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/22—Distance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/10—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/40—Movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
- B65H2557/20—Calculating means; Controlling methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/21—Industrial-size printers, e.g. rotary printing press
Definitions
- the present invention relates to a device for safe operation of at least two relatively movable and driven by a respective drive motor components in a substrates processing machine, wherein a control computer is provided for detecting the movement of the movable components.
- Sheet-fed rotary printing presses have a large number of moving components, which can pose a danger to the operator unprotected.
- the movable components are as rotatably running components in the form of cylinders in the printing units and as parallel movable components in the feeder or boom of the printing press, where the main and auxiliary stacks are moved parallel to each other.
- the rotating cylinders and the components that can move in parallel are in danger of causing injuries to the operator caused by crushing limbs.
- the feeder and boom area which must be freely accessible for changing the stack or for taking test sheets as on the boom, there is an increased risk of injury. It is therefore known a number of approaches to provide investors and investors in sheet-fed rotary printing machines safety devices that limit the risk of injury to a minimum.
- One possibility is to monitor people's access to dangerous areas, such as in the investor or boom.
- a device is from the DE 197 42 764 C1 known.
- the entire access area of a hazardous area is monitored for the intrusion of persons. This is done by means of a light barrier, which reliably detects invading persons. As soon as a person enters the area, the press is shut down immediately.
- the approach with the access control of a hazardous area via a light barrier has the fundamental disadvantage that even if the intrusion is not dangerous for the operator, as it is z. B. may be the case during sampling, the entire machine is turned off. However, such a shutdown of the machine leads to operational downtime and thus production losses.
- From the DE 10 2004 002 307 A1 is a method for the synchronization of main and auxiliary stack in the feeder or boom of a substrate processing machine known.
- the auxiliary stack controller receives from the main stack controller or another higher-level machine controller a start signal for moving the auxiliary stack, which at the same time triggers a movement of the main stack.
- a start signal for moving the auxiliary stack which at the same time triggers a movement of the main stack.
- this control method does not ensure that dangerous operating conditions do not occur in the event of a malfunction of the control system.
- Limbs of persons squeezed between main and auxiliary pile Another printing processing machine is in the document EP 1 086 917 A1 disclosed.
- the device according to the invention can in principle be used in all machines which have relatively movable components which are freely accessible to the operating personnel, so that a corresponding hazard potential is present.
- the device according to the invention is suitable for ensuring safe operation of sheet-fed offset rotary printing presses which have a large number of components which are movable relative to one another, in particular in the area of the feeder and jib.
- the at least two relatively movable components are each driven by a separate electric drive motor.
- between the relatively movable components only an electrical coupling via the control of the drive motors, but no mechanical connection, as z. B.
- the gear train basically has the advantage that the mutually movable components by the gears against each other in fixed relative position, so that the two components can not move to each other and can squeeze limbs of operators.
- This mechanical safety is not given, there is a risk of collision in control errors or failure of the electric drive motors and thus danger to the operator.
- the electrical coupling ensures less mechanical effort and allows for more flexible operation, since the coupling can be easily canceled.
- the movements of the relatively movable components are additionally detected by a control computer, so that dangerous movements of the machine control are known.
- the control computer is also set up such that when the distance between movable components is reduced, at least that movable component is stopped, which is responsible for reducing the distance between the movable components.
- the control computer thus permanently monitors the distance between the movable components and then at least immobilizes that of the movable components which has caused the reduction of the distance. This ensures that the distance between the moving components does not shrink further and thus can lead to bruises on limbs of the operating personnel. Such a reduction in pitch may occur whenever synchronization between the relatively movable components is lost. However, should the mutually relatively movable components move away from each other in the absence of synchronization, the control computer does not intervene because no decreasing distance is detected and thus there is no immediate danger to the operating personnel.
- the movable components are two largely parallel movable components. These largely parallel movable components can be found both in the boom and in the feeder of a sheet-fed offset rotary printing press. Both in the feeder and in the boom, there is a main stack support plate, which is used in normal operation and carries both the feeder and the boom the main stack.
- the main stack consists of the sheet-shaped substrates, which are fed to the printing machine during the printing process.
- the main stack support plate carries the other hand finished printed sheet. If the main pile in the feeder has run down or the main pile in the boom has reached its maximum, a new pile must be fed into the feeder and the finished printed pile must be removed from the boom.
- auxiliary pile support plates are present both in the feeder and in the delivery, which are intended to provide additional sheets during the stack change for a short time in the feeder and to accept further produced sheets in the delivery.
- Below the auxiliary stack carrier can then be made for a limited period of time, the stack change, so that the production of the printing press for stack change does not have to be interrupted.
- the boom of the printing press is also a short closable with a flap support plate for sample sheet removal, which allows to separate during operation current sheet instead of on the main stack for the sample sheet removal. From this sample sheet removal then the operator can take a sheet for checking the print quality safely and z. B. perform a colorimeter.
- this distance is monitored so that at a reduction in the distance between the parallel plates at least that parallel plate is stopped, which moves with a relative speed to the other parallel plate.
- the device according to the invention need not intervene in the control of the parallel plates.
- the moving panels need not be additionally monitored by photocells or other sensors to detect intrusion of persons, which would then cause the machine to stop immediately. Instead, only the proper operation of the parallel plates is monitored and, if necessary, the causative plate is shut down in case of deviations.
- the movable components are two relatively rotatable components. These rotatable relative to each other Components are present in sheet-fed rotary printing machines in the form of cylinders in and between the printing units. Between the printing units are the transport cylinders, which transfer the sheets from one printing unit to the next. In most sheet-fed offset printing presses, the transfer cylinders and cylinders in the printing units are connected by means of a gear train, so that collisions between the cylinders are mechanically prevented. In the future, however, sheet-fed presses will also be used in which no mechanical connections exist between individual cylinders and the cylinders are instead at least partially driven by their own electric drive motors.
- the velocities of the cylinders involved are monitored by the control computer according to the invention and, in the case of impermissible deviations of the speeds from one another, a shutdown of the cylinders is effected. This ensures that even during maintenance operations limbs of the maintenance personnel can not be squeezed between slowly rotating cylinders in the maintenance mode.
- the drive motors of the movable components are each assigned a signal generator and that the signal generator is connected to the control computer.
- the control computer Via the signal transmitters in the form of tachometers, the control computer can calculate the differential speed between the moving components and, assuming a positive differential speed, can conclude that the distance between the moving components is reduced and there is thus a risk.
- the Speed sensors may be in the form of tacho sensors which are either integrated into the electric drive motors themselves or attached to the moving components as separate sensors.
- the control computer has a drive computer and a redundant safety computer.
- the redundant design of the control computer increases the security in the event of failure of the drive computer. In normal operation, only the drive computer controls the distance between the moving components, so that the redundant safety computer only needs to be monitored and intervene in the event of a failure or malfunction of the drive computer.
- the control computer can be programmed so that in case of failure of the drive computer, the redundant safety computer causes a safe shutdown of the printing press and further operation is only possible again when the control computer is fully functional again.
- the control computer consisting of drive computer and safety computer monitors in this case both speed signal transmitter of the mutually movable components and also controls both drive motors.
- each drive motor of the movable components is assigned in each case a control computer with a drive computer and a security computer, wherein the control computer communicate with each other via a bus line.
- each drive motor has its own control computer which is also designed redundantly.
- the communication of the control computer with each other is via a safety bus system such. B. made a safety CAN bus.
- both moving components are stopped.
- collisions between the movable components at the other end of the components may occur due to the rotational movement in this case, so that a simultaneous stopping of both movable components is expedient here.
- FIG. 1 the boom 1 of a sheet-fed printing machine 16 is shown.
- the boom 1 adjoins the last printing unit of the sheet-fed printing machine 16 and takes on the finished produced substrates.
- the boom 1 consists of a frame with housing 5, which receives the movable stack support plate 4 and the movable test sheet removal 2.
- the test sheet removal has a flap, which allows the removal of sheets by a printer in the open state.
- the sample sheets are not deposited on the main stack like the other sheets, but on the test sheet net 2.
- the two components 2, 4 can be moved vertically in parallel. Both components 2, 4 are driven by separate electric drive motors 6, 7. There is thus no mechanical synchronization between the two components 2, 4.
- a gap 3 which, depending on the movement of the two components 2, 4 to each other either increased, decreased or remains the same in parallel operation .
- the operator With his or her hands or head in the area of the gap 3 between the lower edge of the sample sheet removal unit 2 and the main stack carrier 4. If this gap 3 is reduced, there is a risk that the operating personnel is crushed and injured. It is therefore important that the gap 3 does not shrink to to exclude these injuries.
- a protective cover 8 In the upper part of the sample sheet removal 2 is a protective cover 8, which protects this area against interference by the operating personnel and moves with the sample sheet removal 2.
- FIG. 1a is the control device according to the invention for the boom 1 off FIG. 1 shown.
- the drive motor 6 for the test sheet removal 2 and the drive motor 7 for the stack support plate 4 are monitored by a common control computer 13.
- the control computer 13 calculates the corresponding control commands for the respective operating state of the boom 1.
- the control computer 13 is designed redundantly, wherein the drive computer 11 controls the motor 6 during normal operation, while the security computer 12 runs only redundantly as a monitoring computer.
- the motor 7 for the stack support plate 4 is controlled by a similar, not shown, control computer 13.
- the safety computer 12 takes over the control of the motor 6 and sets it to stand still, if necessary.
- Fig. 2 is an alternative embodiment of the controller in Fig. 1 displayed.
- the two drive motors 6, 7 are each connected to a separate control computer 13, wherein each of the two control computer 13 has a drive computer 11 and a safety computer 12.
- the two speed sensors 9, 10 are connected in this case only to one control computer 13, so that each of the speed sensors 9, 10 is monitored separately from a control computer 13.
- the two control computers 13 are connected to one another via a safety bus system 15, via which they can exchange the respective operating states. The exchange of operating conditions happens in FIG. 2 by the security computer 12 of the two control computer 13.
- the drive computer 11, however, are not directly connected.
- each control computer 13 controls only one drive motor 6, 7 and monitors only one speed signal generator 9, 10, the control computers 13 can be designed correspondingly simpler. It is nevertheless ensured via the safety bus system 15 that the exchange of safety-relevant operating data between the safety computers 12 can take place.
- a boom 1 which not only has a movable test sheet removal 2 but also a movable auxiliary pile support 18.
- the speeds of all three components 2, 4 18 are monitored by a control computer 13.
- the sample sheet removal 2 or the sample sheet removal 2 and the auxiliary pile carrier 18 are switched off, so that the intermediate spaces 3 can not be further reduced.
- FIG. 4 For example, the transfer cylinders 17 of a sheet-fed printing machine 16 are shown. Both transfer cylinders 17 are driven by their own drive motor 6, 7, so that there is no mechanical coupling between the transfer cylinders 17. In trouble-free operation, the transfer cylinder 17 driven by the motors 6, 7 rotate synchronously and in parallel according to the black arrows, so that even with the printing machine 16 open in slow maintenance operation no risk of crushing limbs, which get into the gap 3 between the transfer cylinders 17.
- the speeds of the transfer cylinder 17 are detected to each other, so that the control computer 13 can calculate the relative speeds of the transfer cylinder 17 to each other. If the control computer 13 concludes from these relative speeds to each other, since the gap 3 is reduced, the transfer cylinder 17 is stopped.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Control Of Presses (AREA)
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zum sicheren Betrieb von wenigstens zwei relativ zueinander beweglichen und von jeweils einem Antriebsmotor angetriebenen Bauteilen in einer Bedruckstoffe verarbeitenden Maschine, wobei ein Steuerungsrechner zur Erfassung der Bewegung der beweglichen Bauteile vorgesehen ist.The present invention relates to a device for safe operation of at least two relatively movable and driven by a respective drive motor components in a substrates processing machine, wherein a control computer is provided for detecting the movement of the movable components.
Bogenrotationsdruckmaschinen weisen eine Vielzahl von beweglichen Bauteilen auf, welche ungeschützt für das Bedienpersonal eine Gefahrenquelle darstellen können. Die beweglichen Bauteile befinden sich als drehbeweglich ausgeführte Bauteile in Form von Zylindern in den Druckwerken und als parallel verfahrbare Bauteile im Anleger oder Ausleger der Druckmaschine, wo Haupt- und Hilfsstapel parallel zueinander verfahren werden. Bei den rotierenden Zylindern und den parallel verfahrbaren Bauteilen besteht die Gefahr, dass das Bedienpersonal Verletzungen durch Einquetschen von Gliedmaßen davonträgt. Insbesondere im Anleger- und Auslegerbereich, welcher zum Wechseln des Stapels oder zur Entnahme von Probebogen wie am Ausleger frei zugänglich sein muss, besteht ein erhöhtes Verletzungspotential. Es ist daher eine Reihe von Ansätzen bekannt, an Anlegern und Auslegern von Bogenrotationsdruckmaschinen Sicherheitseinrichtungen anzubringen, welche die Verletzungsgefahr auf ein Minimum begrenzen. Eine Möglichkeit besteht darin, den Zugang von Personen zu gefährlichen Bereichen wie im Anleger oder Ausleger zu überwachen. Eine solche Vorrichtung ist aus der
Aus der
Es ist daher Aufgabe der vorliegenden Erfindung, eine Vorrichtung zu schaffen, welche bei beweglichen Bauteilen in Druckmaschinen einen sicheren Betrieb und zugleich ein Maximum an Verfügbarkeit der Maschine gewährleistet, so dass unnötiger Stillstand vermieden werden kann.It is therefore an object of the present invention to provide a device which ensures safe operation and at the same time maximum availability of the machine in the case of movable components in printing presses, so that unnecessary standstill can be avoided.
Die vorliegende Aufgabe wird erfindungsgemäß durch Patentanspruch 1 gelöst, vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen und den Zeichnungen zu entnehmen. Die erfindungsgemäße Vorrichtung kann grundsätzlich in allen Maschinen eingesetzt werden, welche relativ zueinander bewegliche Bauteile aufweisen, die für das Bedienpersonal frei zugänglich sind, so dass ein entsprechendes Gefährdungspotential vorhanden ist. Insbesondere eignet sich die erfindungsgemäße Vorrichtung dazu, einen sicheren Betrieb von Bogenoffsetrotationsdruckmaschinen zu gewährleisten, welche über eine Vielzahl von zueinander beweglichen Bauteilen insbesondere im Anleger- und Auslegerbereich verfügen. Dabei werden die wenigstens zwei relativ zueinander beweglichen Bauteile jeweils von einem eigenen elektrischen Antriebsmotor angetrieben. Dadurch besteht zwischen den relativ zueinander beweglichen Bauteilen nur eine elektrische Kopplung über die Ansteuerung der Antriebsmotoren, aber keine mechanische Verbindung, wie sie z. B. bei zwei mittels eines Zahnräderzugs verbundenen beweglichen Bauteilen besteht. Der Zahnräderzug bietet grundsätzlich den Vorteil, dass die zueinander beweglichen Bauteile durch die Zahnräder gegeneinander in einer Relativposition fixiert werden, so dass sich die beiden Bauteile nicht aufeinander zu bewegen können und Gliedmaßen von Bedienpersonen einquetschen können. Bei nur elektrisch durch einen Steuerungsrechner gekoppelten relativ zueinander beweglichen Bauteilen ist diese mechanische Sicherheit nicht gegeben, so besteht bei Steuerungsfehlern oder beim Ausfall der elektrischen Antriebsmotoren Kollisionsgefahr und damit Gefahr für das Bedienpersonal. Die elektrische Kopplung sorgt jedoch für einen geringeren mechanischen Aufwand und ermöglicht einen flexibleren Betrieb, da die Kopplung einfach aufgehoben werden kann. Die Bewegungen der relativ zueinander beweglichen Bauteile werden zusätzlich durch einen Steuerungsrechner erfasst, so dass gefährliche Bewegungen der Maschinensteuerung bekannt sind. Erfindungsgemäß ist der Steuerungsrechner außerdem so eingerichtet, dass bei einer Verringerung des Abstands zwischen beweglichen Bauteilen ein Stillsetzen zumindest desjenigen beweglichen Bauteils erfolgt, welches für die Verringerung des Abstands zwischen den beweglichen Bauteilen ursächlich ist. Der Steuerungsrechner überwacht also permanent den Abstand zwischen den beweglichen Bauteilen und setzt dann zumindest dasjenige der beweglichen Bauteile still, welches die Verringerung des Abstands bewirkt hat. Damit wird sichergestellt, dass sich der Abstand zwischen den beweglichen Bauteilen nicht weiter verkleinert und somit zu Quetschungen an Gliedmaßen des Bedienpersonals führen kann. Eine solche Verringerung des Abstands kann immer dann passieren, wenn die Synchronisation zwischen den relativ zueinander beweglichen Bauteilen verloren geht. Sollten sich allerdings die zueinander relativ beweglichen Bauteile bei fehlender Synchronisation voneinander entfernen, so greift der Steuerungsrechner nicht ein, da kein sich verringernder Abstand detektiert wird und somit auch keine unmittelbare Gefahr für das Bedienpersonal besteht.The present object is achieved by
In einer ersten Ausgestaltung der Erfindung ist vorgesehen, dass die beweglichen Bauteile zwei weitgehend parallel verfahrbare Bauteile sind. Diese weitgehend parallel verfahrbaren Bauteile finden sich sowohl im Ausleger als auch im Anleger einer Bogenoffsetrotationsdruckmaschine. Sowohl im Anleger als auch im Ausleger gibt es eine Hauptstapeltragplatte, welche im normalen Betrieb zum Einsatz kommt und sowohl im Anleger als auch im Ausleger den Hauptstapel trägt. Im Anleger besteht der Hauptstapel aus den bogenförmigen Bedruckstoffen, welche während des Druckvorgangs der Druckmaschine zugeführt werden. Im Ausleger trägt die Hauptstapeltragplatte dagegen die fertig bedruckten Bogen. Wenn der Hauptstapel im Anleger erschöpft oder der Hauptstapel im Ausleger das Maximum erreicht hat, so muss im Anleger einer neuer Stapel zugeführt und im Ausleger der fertig bedruckte Stapel entnommen werden. Um einen Nonstop-Stapelwechsel durchzuführen, sind sowohl im Anleger als auch im Ausleger Hilfsstapeltragplatten vorhanden, welche dazu vorgesehen sind, während des Stapelwechsels für kurze Zeit im Anleger weitere Bogen zur Verfügung zu stellen und im Ausleger weitere produzierte Bogen entgegenzunehmen. Unterhalb der Hilfsstapelträger kann dann während eines begrenzten Zeitraums der Stapelwechsel vorgenommen werden, so dass die Produktion der Druckmaschine zum Stapelwechsel nicht unterbrochen werden muss. Im Ausleger der Druckmaschine befindet sich außerdem eine kurze mit einer Klappe verschließbare Tragplatte zur Probebogenentnahme, welche es erlaubt, während des laufenden Betriebs Bogen statt auf dem Hauptstapel für die Probebogenentnahme zu separieren. Von dieser Probebogenentnahme kann dann das Bedienpersonal einen Bogen zur Überprüfung der Druckqualität gefahrlos entnehmen und z. B. einem Farbmessgerät zuführen. Zwischen den parallelen Platten im Ausleger und Anleger besteht jedoch die Gefahr, dass bei einer Verringerung zwischen den parallelen Platten Gliedmaßen des Bedienpersonals eingequetscht und verletzt werden. Zur Vermeidung eines solchen Quetschvorgangs ist folglich darauf zu achten, dass der Abstand sich nicht verkleinert, da sonst ein Verletzungspotential besteht. Mittels der vorliegenden erfindungsgemäßen Vorrichtung wird genau dieser Abstand so überwacht, dass bei einer Verringerung des Abstands zwischen den parallelen Platten zumindest diejenige parallele Platte stillgesetzt wird, welche sich mit einer Relativgeschwindigkeit auf die andere parallele Platte zu bewegt. Sollten sich die parallelen Platten dagegen auseinander bewegen, so braucht die erfindungsgemäße Vorrichtung nicht in die Steuerung der parallelen Platten einzugreifen. Die beweglichen Platten müssen nicht zusätzlich durch Lichtschranken oder andere Sensoren überwacht werden muss, um das Eindringen von Personen zu erfassen, was dann zum sofortigen Stillstand der Maschine führen würde. Stattdessen wird hier nur der ordnungsgemäße Betrieb der parallelen Platten überwacht und bei Abweichungen gegebenenfalls die ursächliche Platte stillgesetzt.In a first embodiment of the invention, it is provided that the movable components are two largely parallel movable components. These largely parallel movable components can be found both in the boom and in the feeder of a sheet-fed offset rotary printing press. Both in the feeder and in the boom, there is a main stack support plate, which is used in normal operation and carries both the feeder and the boom the main stack. In the feeder, the main stack consists of the sheet-shaped substrates, which are fed to the printing machine during the printing process. In the boom, the main stack support plate carries the other hand finished printed sheet. If the main pile in the feeder has run down or the main pile in the boom has reached its maximum, a new pile must be fed into the feeder and the finished printed pile must be removed from the boom. In order to perform a non-stop stack change, auxiliary pile support plates are present both in the feeder and in the delivery, which are intended to provide additional sheets during the stack change for a short time in the feeder and to accept further produced sheets in the delivery. Below the auxiliary stack carrier can then be made for a limited period of time, the stack change, so that the production of the printing press for stack change does not have to be interrupted. In the boom of the printing press is also a short closable with a flap support plate for sample sheet removal, which allows to separate during operation current sheet instead of on the main stack for the sample sheet removal. From this sample sheet removal then the operator can take a sheet for checking the print quality safely and z. B. perform a colorimeter. Between the parallel plates in the boom and feeder, however, there is a risk that limbs of the operators will be crushed and injured as the depth between the parallel plates decreases. To avoid such a squeezing process, it must therefore be ensured that the distance does not diminish, since otherwise there is a risk of injury. By means of the present inventive device exactly this distance is monitored so that at a reduction in the distance between the parallel plates at least that parallel plate is stopped, which moves with a relative speed to the other parallel plate. On the other hand, should the parallel plates move apart, the device according to the invention need not intervene in the control of the parallel plates. The moving panels need not be additionally monitored by photocells or other sensors to detect intrusion of persons, which would then cause the machine to stop immediately. Instead, only the proper operation of the parallel plates is monitored and, if necessary, the causative plate is shut down in case of deviations.
In einer Ausführung der Erfindung ist vorgesehen, dass die beweglichen Bauteile zwei relativ zueinander verdrehbare Bauteile sind. Diese relativ zueinander verdrehbaren Bauteile sind bei Bogenrotationsdruckmaschinen in Form von Zylindern in und zwischen den Druckwerken vorhanden. Zwischen den Druckwerken befinden sich die Transportzylinder, welche die Bogen von einem Druckwerk zum nächsten übergeben. Bei den meisten Bogenoffsetdruckmaschinen sind die Transportzylinder und Zylinder in den Druckwerken mittels Zahnräderzug verbunden, so dass Kollisionen zwischen den Zylindern auf mechanische Art und Weise unterbunden wird. Zukünftig werden jedoch auch Bogendruckmaschinen zum Einsatz kommen, bei denen zwischen einzelnen Zylindern keine mechanischen Verbindungen mehr bestehen und die Zylinder stattdessen zumindest teilweise von eigenen elektrischen Antriebsmotoren angetrieben werden. Die derart angetriebenen Zylinder sind dann nicht mehr mechanisch gegeneinander verdrehbar gesichert, so dass es auch z. B. zu Kollisionen von Übergabegreifern unabhängig angetriebener benachbarter Zylinder kommen kann. Im normalen Betrieb der Druckmaschine sind die Zylinder durch einen Schutz abgedeckt, so dass für das Bedienpersonal keine Gefahr besteht. Bei der Wartung der Druckmaschinen wird dieser Schutz jedoch abgebaut, so dass hier die Gefahr von Quetschungen zwischen zwei sich unabhängig zueinander drehenden Zylindern besteht. Solange die Zylinder langsam parallel rotieren, ist diese Gefahr jedoch gering. Sollte die Synchronisation jedoch aufgrund von Fehlern in den Antriebsmotoren oder der Steuerung der Zylinder ausfallen, so können auch hier bei geöffneter Maschine Gliedmaßen des Wartungspersonals eingequetscht werden. Um dies zu verhindern werden erfindungsgemäß die Geschwindigkeiten der beteiligten Zylinder vom Steuerungsrechner überwacht und bei unzulässigen Abweichungen der Geschwindigkeiten voneinander eine Stillsetzung der Zylinder bewirkt. Damit ist sichergestellt, dass auch bei Wartungsvorgängen Gliedmaßen des Wartungspersonals nicht zwischen sich langsam drehenden Zylindern im Wartungsbetrieb eingequetscht werden können.In one embodiment of the invention it is provided that the movable components are two relatively rotatable components. These rotatable relative to each other Components are present in sheet-fed rotary printing machines in the form of cylinders in and between the printing units. Between the printing units are the transport cylinders, which transfer the sheets from one printing unit to the next. In most sheet-fed offset printing presses, the transfer cylinders and cylinders in the printing units are connected by means of a gear train, so that collisions between the cylinders are mechanically prevented. In the future, however, sheet-fed presses will also be used in which no mechanical connections exist between individual cylinders and the cylinders are instead at least partially driven by their own electric drive motors. The thus driven cylinders are then no longer mechanically secured against each other rotatable, so that it is also z. B. can come to collisions of transfer grippers independently driven adjacent cylinder. During normal operation of the printing press, the cylinders are covered by a guard, so there is no danger to the operator. During maintenance of printing presses, however, this protection is reduced, so that there is a risk of bruising between two independently rotating cylinders. As long as the cylinders rotate slowly in parallel, this danger is low. However, if the synchronization fails due to errors in the drive motors or the control of the cylinder, limbs of the maintenance personnel can also be squeezed in here with the machine open. In order to prevent this, the velocities of the cylinders involved are monitored by the control computer according to the invention and, in the case of impermissible deviations of the speeds from one another, a shutdown of the cylinders is effected. This ensures that even during maintenance operations limbs of the maintenance personnel can not be squeezed between slowly rotating cylinders in the maintenance mode.
Vorteilhafter Weise ist vorgesehen, dass den Antriebsmotoren der beweglichen Bauteile jeweils ein Signalgeber zugeordnet ist und dass der Signalgeber an den Steuerungsrechner angeschlossen ist. Über die Signalgeber in Form von Tachometern kann der Steuerungsrechner die Differenzgeschwindigkeit zwischen den beweglichen Bauteilen berechnen und bei positiver Differenzgeschwindigkeit daraus schließen, dass sich der Abstand zwischen den beweglichen Bauteilen verkleinert und so Gefahr besteht. Die Geschwindigkeitssignalgeber können in Form von Tachosensoren ausgeführt sein, welche entweder in die elektrischen Antriebsmotoren selbst integriert oder als separate Sensoren an den beweglichen Bauteilen angebracht sind.Advantageously, it is provided that the drive motors of the movable components are each assigned a signal generator and that the signal generator is connected to the control computer. Via the signal transmitters in the form of tachometers, the control computer can calculate the differential speed between the moving components and, assuming a positive differential speed, can conclude that the distance between the moving components is reduced and there is thus a risk. The Speed sensors may be in the form of tacho sensors which are either integrated into the electric drive motors themselves or attached to the moving components as separate sensors.
In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass der Steuerungsrechner einen Antriebsrechner und einen redundanten Sicherheitsrechner aufweist. Die redundante Auslegung des Steuerungsrechners erhöht die Sicherheit bei Ausfall des Antriebsrechners. Im Normalbetrieb steuert ausschließlich der Antriebsrechner den Abstand zwischen den beweglichen Bauteilen, so dass der redundante Sicherheitsrechner nur überwacht und bei Ausfall oder Fehlfunktionen des Antriebsrechners eingreifen muss. Der Steuerungsrechner kann so programmiert sein, dass bei Ausfall des Antriebsrechners der redundante Sicherheitsrechner ein sicheres Stillsetzen der Druckmaschine bewirkt und ein weiterer Betrieb erst wieder möglich ist, wenn der Steuerungsrechner wieder voll funktionsfähig ist. Der Steuerungsrechner bestehend aus Antriebsrechner und Sicherheitsrechner überwacht in diesem Fall beide Geschwindigkeitssignalgeber der zueinander beweglichen Bauteile und steuert auch beide Antriebsmotoren an.In a further embodiment of the invention, it is provided that the control computer has a drive computer and a redundant safety computer. The redundant design of the control computer increases the security in the event of failure of the drive computer. In normal operation, only the drive computer controls the distance between the moving components, so that the redundant safety computer only needs to be monitored and intervene in the event of a failure or malfunction of the drive computer. The control computer can be programmed so that in case of failure of the drive computer, the redundant safety computer causes a safe shutdown of the printing press and further operation is only possible again when the control computer is fully functional again. The control computer consisting of drive computer and safety computer monitors in this case both speed signal transmitter of the mutually movable components and also controls both drive motors.
In einer alternativen Ausgestaltung der Erfindung kann jedoch auch vorgesehen sein, dass jedem Antriebsmotor der beweglichen Bauteile jeweils ein Steuerungsrechner mit einem Antriebsrechner und einem Sicherheitsrechner zugeordnet ist, wobei die Steuerungsrechner miteinander über eine Busleitung kommunizieren. In diesem Fall hat jeder Antriebsmotor seinen eigenen Steuerungsrechner der jeweils ebenfalls redundant ausgelegt ist. Die Kommunikation der Steuerungsrechner untereinander wird über ein Sicherheitsbussystem wie z. B. einen Safety-CAN-Bus vorgenommen.In an alternative embodiment of the invention, however, it can also be provided that each drive motor of the movable components is assigned in each case a control computer with a drive computer and a security computer, wherein the control computer communicate with each other via a bus line. In this case, each drive motor has its own control computer which is also designed redundantly. The communication of the control computer with each other is via a safety bus system such. B. made a safety CAN bus.
Vorteilhafter Weise ist weiterhin vorgesehen, dass beide beweglichen Bauteile stillgesetzt werden. Dies stellt eine alternative Ausführungsform zu der Vorgehensweise dar, nur dass eine ursächlich für die Verringerung des Abstands verantwortliche bewegliche Bauteil still zu setzen. Bei drehbeweglichen Bauteilen kann es jedoch auf Grund der Rotationsbewegung in diesem Fall zu Kollisionen zwischen den beweglichen Bauteilen am anderen Ende der Bauteile kommen, so dass hier ein gleichzeitiges Stillsetzen beider beweglicher Bauteile sinnvoll ist.Advantageously, it is further provided that both moving components are stopped. This represents an alternative embodiment to the procedure, except that to put a responsible for the reduction of the distance movable component quiet. In the case of components which are capable of rotating, however, collisions between the movable components at the other end of the components may occur due to the rotational movement in this case, so that a simultaneous stopping of both movable components is expedient here.
Die vorliegende Erfindung wird nachfolgend anhand mehrerer Figuren näher beschrieben und erläutert. Es zeigen:
- Fig. 1:
- den Auslegerbereich einer Druckmaschine mit einer beweglichen Probebogenentnahme,
- Fig. 1a:
- die erfindungsgemäße Sicherheitssteuerung für den Ausleger in
Fig. 1 , - Fig. 2:
- eine Sicherheitssteuerung für den Ausleger in
mit zwei redundant ausgelegten Steuerungsrechnern,Figur 1 - Fig. 3
- ein Ausleger mit einer beweglichen Probebogenentnahme und einer beweglichen Hilfsstapeltragplatte und
- Fig. 4:
- den Einsatz der erfindungsgemäßen Sicherheitsvorrichtung bei Übergabezylindern in einer Bogenrotationsdruckmaschine.
- Fig. 1:
- the boom area of a printing machine with a movable sample sheet removal,
- Fig. 1a:
- the safety control according to the invention for the boom in
Fig. 1 . - Fig. 2:
- a safety control for the boom in
FIG. 1 with two redundantly designed control computers, - Fig. 3
- a boom with a movable test sheet removal and a movable auxiliary stack support plate and
- 4:
- the use of the safety device according to the invention in transfer cylinders in a sheet-fed rotary printing press.
In
In
In
In
Neben der Überwachung von weitgehend parallel beweglichen Bauteilen wie im Ausleger 1 ist auch die Überwachung von drehbeweglichen Bauteilen in einer Druckmaschine 16 möglich. In
- 11
- Auslegerboom
- 22
- Unterkante der ProbebogenentnahmeeinheitLower edge of the sample sheet removal unit
- 33
- Zwischenraumgap
- 44
- HauptstapeltragplatteMain pile carrier plate
- 55
- Gehäusecasing
- 66
- Antriebsmotor erstes bewegliches BauteilDrive motor first moving component
- 77
- Antriebsmotor zweites bewegliches BauteilDrive motor second moving component
- 88th
- Schutzvorrichtungguard
- 99
- Geschwindigkeitssignalgeber ProbebogenentnahmetragplatteSpeed sounder Sample arc sampling plate
- 1010
- Geschwindigkeitssignalgeber StapeltragplatteSpeed signaler stack carrier plate
- 1111
- Antriebsrechnerdrive computer
- 1212
- Sicherheitsrechnercomputer security
- 1313
- Steuerungsrechnercontrol computer
- 1414
- Kommunikationsverbindungcommunication link
- 1515
- Sicherheitsbussystemsafety bus system
- 1616
- Druckmaschinepress
- 1717
- ÜbergabezylinderTransfer cylinder
- 1818
- HilfsstapelträgerAuxiliary pile carrier
Claims (10)
- Machine for processing printing material including a device for the safe operation of at least two components (2, 4, 17, 18) that are movable relative to one another and are driven by a respective drive motor (6, 7), wherein at least one control unit (13) is provided to monitor the movement of the movable components (2, 4, 17, 18),
characterized in
that the control unit (13) is equipped in such a way that upon a decrease of the distance between the movable components (2, 3, 17, 18), the movement of at least that movable component (2, 17, 18) that causes the decrease of the distance between the movable components (2, 4, 17, 18) is stopped. - Machine for processing printing material according to claim 1,
characterized in
that the movable components (2, 4) are two components (2, 4, 18) that are disposed to be essentially parallel to one another. - Machine for processing printing material according to claim 2,
characterized in
that the components (2, 4, 18) disposed to be essentially parallel are disposed in the delivery (1) or in the feeder of a printing machine (16). - Machine for processing printing material according to claim 3,
characterized in
that one movable component is the main stack carrier plate (4) and the other movable component (2) is the sample sheet removal unit or the auxiliary stack carrier (18) in the delivery (1). - Machine for processing printing material according to claim 1,
characterized in
that the movable components (17) are two components (17) that are capable of being rotated relative to one another. - Machine for processing printing material according to any one of the preceding claims,
characterized in
that every drive motor (6, 7) of the movable components (2, 4, 17, 18) is assigned a respective speed signal transmitter (9, 10) and that the speed signal transmitters (9, 10) are connected to the control unit (13). - Machine for processing printing material according to claim 6,
characterized in
that the control unit (13) includes a drive computer (11) and a redundant safety computer (12). - Machine for processing printing material according to any one of the preceding claims,
characterized in
that every drive motor (6, 7) of the movable components (2, 4, 17, 18) is assigned a respective control unit (13) including a drive computer (11) and a safety computer (12) and that the control units (13) communicate with one another via a bus line (15). - Machine for processing printing material according to any one of the preceding claims,
characterized in
that the movements of all movable components (2, 4, 17, 18) are stopped. - Machine for processing printing material according to claim 5,
characterized in
that the rotating movable components are transfer cylinders (17) in a printing machine (16).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007033432A DE102007033432A1 (en) | 2007-07-18 | 2007-07-18 | Printing machine with electric crush protection |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2033919A2 EP2033919A2 (en) | 2009-03-11 |
EP2033919A3 EP2033919A3 (en) | 2011-12-07 |
EP2033919B1 true EP2033919B1 (en) | 2018-09-12 |
Family
ID=40148939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08104733.4A Active EP2033919B1 (en) | 2007-07-18 | 2008-07-14 | Printing press with electric anti-crush protection |
Country Status (4)
Country | Link |
---|---|
US (1) | US8151706B2 (en) |
EP (1) | EP2033919B1 (en) |
CN (1) | CN101348035B (en) |
DE (1) | DE102007033432A1 (en) |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4186309A (en) * | 1977-10-13 | 1980-01-29 | Web Printing Controls Co. Inc., | Web monitoring and control apparatus for web handling machinery |
NL8200559A (en) | 1982-02-15 | 1983-09-01 | Ir Jan Bart Le Poole Prof Dr | IRRADIATION DEVICE WITH BUNDLE SPLIT. |
SE456048B (en) * | 1982-02-24 | 1988-08-29 | Philips Norden Ab | SET AND DEVICE FOR DETERMINING THE RISK OF COLLISION FOR TWO INBOARD'S LOVELY BODIES |
DE3614979C3 (en) * | 1986-05-02 | 1999-12-16 | Heidelberger Druckmasch Ag | Security system for a printing press |
DE4038284A1 (en) * | 1990-11-30 | 1992-06-04 | Brose Fahrzeugteile | Measuring position and direction of motion of part - moving in translation and/or rotation using single sensor and direction encoded signals, esp. for vehicle electric windows and roof |
US5342036A (en) * | 1991-10-09 | 1994-08-30 | Roll Systems, Inc. | High capacity sheet feeders for high volume printers |
DE19643252C2 (en) * | 1996-10-19 | 1999-05-20 | Roland Man Druckmasch | Control for the operation of a printing press |
DE19742764C1 (en) | 1997-09-27 | 1998-09-10 | Roland Man Druckmasch | Stacking table for stack of sheet paper |
DE29720728U1 (en) * | 1997-11-25 | 1998-01-08 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Safety device for printing machines |
DE19910242C2 (en) * | 1998-03-30 | 2002-03-14 | Heidelberger Druckmasch Ag | Device for forming stacks from a stream of successive sheets |
NL1012923C2 (en) * | 1999-08-27 | 2001-02-28 | Ocu Technologies B V | Sheet depositing device for selectively depositing sheets on superimposed carriers. |
US6678582B2 (en) * | 2002-05-30 | 2004-01-13 | Kuka Roboter Gmbh | Method and control device for avoiding collisions between cooperating robots |
DE102004002307A1 (en) | 2003-02-03 | 2004-08-12 | Heidelberger Druckmaschinen Ag | Procedure for synchronisation of movement sequences of main and additional piles of printed material in sheet feeder entails additional pile control unit receiving from main pile control unit start signal to move additional pile |
CN1997490A (en) * | 2004-07-19 | 2007-07-11 | 工业材料与设备公司 | Method and system for avoiding collisions between moveable devices |
DE202004013114U1 (en) * | 2004-08-21 | 2004-11-11 | Man Roland Druckmaschinen Ag | Optical safety barrier enclosure for a print machine comprises optical transmitter and receiver each with a housing, one at least of which is mounted using an adapter that permits compensation of the tolerances of beam optics |
DE102005033304A1 (en) * | 2005-07-16 | 2007-01-18 | Man Roland Druckmaschinen Ag | Printing machine and method for operating a ducking machine |
ZA200710597B (en) * | 2006-12-21 | 2008-11-26 | Inventio Ag | Method of preventing collision of two lift cages movable in the same shaft of a lift installation and corresponding lift installation |
-
2007
- 2007-07-18 DE DE102007033432A patent/DE102007033432A1/en not_active Withdrawn
-
2008
- 2008-07-14 EP EP08104733.4A patent/EP2033919B1/en active Active
- 2008-07-18 CN CN200810137753.1A patent/CN101348035B/en active Active
- 2008-07-18 US US12/176,002 patent/US8151706B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
DE102007033432A1 (en) | 2009-01-22 |
EP2033919A3 (en) | 2011-12-07 |
CN101348035A (en) | 2009-01-21 |
US20090022538A1 (en) | 2009-01-22 |
US8151706B2 (en) | 2012-04-10 |
CN101348035B (en) | 2015-04-22 |
EP2033919A2 (en) | 2009-03-11 |
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