EP0694387B1 - Method and means for controlling the position of a convertable sheet printing press - Google Patents
Method and means for controlling the position of a convertable sheet printing press Download PDFInfo
- Publication number
- EP0694387B1 EP0694387B1 EP95109170A EP95109170A EP0694387B1 EP 0694387 B1 EP0694387 B1 EP 0694387B1 EP 95109170 A EP95109170 A EP 95109170A EP 95109170 A EP95109170 A EP 95109170A EP 0694387 B1 EP0694387 B1 EP 0694387B1
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- Prior art keywords
- printing press
- printing
- difference
- press
- turning device
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- 238000007639 printing Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000009877 rendering Methods 0.000 claims 2
- 230000002441 reversible effect Effects 0.000 description 16
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 230000001419 dependent effect Effects 0.000 description 5
- 238000007645 offset printing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/10—Combinations of transfer drums and grippers
- B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine
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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
- B41F33/16—Programming systems for automatic control of sequence of operations
Definitions
- the invention relates to a method and device for monitoring the condition of a convertible sheet-fed printing machine according to the preamble of the method and device claim.
- Convertible sheet-fed printing presses which operate on the principle of the use of trailing edges, are generally known and can be used in the modes of perfecting or perfecting.
- the changeover of such a printing machine from the printing mode to the perfecting mode means that the part of the printing machine following the turning device must be adjusted in relation to the part in front of the turning device in accordance with the format of the printing material.
- Printing machines of this type therefore have clutch and changeover devices by means of which the mode change is to be carried out.
- the changeover processes shown above are known from DE 3 526 123 A1.
- other modules serving to change the format must also be converted depending on the format, which is also known from the above-mentioned document.
- a device for securing a rotary printing press is known from EP 0 243 700 B1, which uses mechanical means to check the clamping condition of the coupling of the convertible turning device. Because of the large number of additional components to be provided, this solution is very cost-intensive.
- the object of the present invention is therefore to further develop a method and a device for monitoring the condition of a convertible sheet-fed printing press in accordance with the preamble of the method or device claim, so that an exact check of the correct operating state is possible in a structurally simple manner.
- a size corresponding to the angular position of the printing machine is detected both before and after the convertible turning device and these sizes are compared and evaluated with one another taking into account a format-dependent angle difference in the perfecting mode.
- a correct clamping condition in the coupling of the convertible turning device results from the fact that the difference between these angle values does not change over time.
- the absolute value of this difference does not play a role in monitoring, it only depends on the temporal constancy of this difference.
- an additional second angle transmitter is provided after the last turning device.
- the angle encoders can be designed as absolute encoders, but incremental encoders or the like can also be used.
- the signals from the angle transmitters are fed to a perfecting and counterpressure computer which carries out the monitoring provided according to the invention.
- the conversion processes for changing the operating mode from perfect to perfect and reverse printing and vice versa are also carried out by this perfecting and perfecting computer.
- FIGS. 1 and 2 show in principle a sheet-fed offset printing press with a turning device after the first printing unit.
- Figures 1 and 2 show a view or a top view of the first five printing units of a sheetfed offset printing press.
- G the counter-pressure cylinders and T the intermediate transfer or bypass drums.
- the sheets are fed via a feed drum A to the impression cylinder G of the first printing unit.
- a regulated DC motor is provided in a main drive HA, through which a longitudinal shaft LW can be driven.
- the longitudinal shaft LW has three feed gears E through which the impression cylinders G of the first, third and fifth printing units are driven.
- the impression cylinder G, the transfer drum T, the turning drum W and the Feed drum A coupled to one another via a continuous gear train R.
- the first counter-pressure cylinder G has, in a manner known per se, two toothed rings lying next to one another and adjustable relative to one another and which can be clamped to one another via a coupling (not shown).
- the turning drum W has a single-wide gear and the downstream impression cylinder G has a double-wide gear.
- the impression cylinders G and the transfer drums T of the subsequent printing units in turn have single-width gearwheels lying in one plane.
- an electrically switchable clutch KLW is arranged in the longitudinal shaft LW in front of the second feed gearbox E.
- a positioning drive PA is also attached to the feed gear E of the third printing unit via a further clutch KPA, by means of which, after opening the clutch KLW arranged in the longitudinal shaft LW and opening the clutch (not shown) in the double ring gear of the first impression cylinder G, the part of the printing press after the turning device can be adjusted in size from face to face and reverse and vice versa.
- All of the changeover processes, and in particular the format-appropriate movement of the printing units relative to one another via the positioning drive PA are controlled by a perfecting and reverse printing computer SWR.
- This perfecting and reverse printing computer controls the further format-dependent changeover processes, which are also not addressed here, whereby the adjustment of the gripper opening curve from perfecting to perfecting and reverse printing is only mentioned here as an example.
- the perfecting and reverse pressure calculator SWR is connected to two angle encoders WG1, WG2.
- the first angle encoder WG1 is attached to the single large feed drum A with one turn.
- the second angle encoder WG2 is attached at the end to the end of the longitudinal shaft LW behind the last feed gear E. Since the longitudinal shaft LW and the feed drum A run at different speeds with respect to one another, a corresponding gear, but not shown here, is connected upstream of the second angle encoder WG2, so that the second Angle encoder WG2 runs at the same speed as the first angle encoder.
- the first angle encoder WG1 is also connected to a machine control, not shown, so that the corresponding control controls all machine-rotation-angle-dependent operations (for example printing on / off or sheet query) via the first angle encoder WG1.
- the SWR is also connected to the machine control system via a bus system, not shown.
- the perfecting and reverse pressure calculator SWR now switches the positioning drive PA via the coupling KPA to the central feed gear E.
- the positioning drive PA is decoupled via the coupling KPA.
- the perfecting computer SWR opens the clutch KLW in the longitudinal shaft LW and the clutch, not shown, between the two gears of the first impression cylinder G.
- the perfecting computer SWR controls the positioning drive PA in such a way that the Reversing drum W and the following printing units can be converted from, for example, perfecting to perfecting.
- the perfecting and reverse printing computer SWR reads in the angle values of the second angle encoder WG2 and stops the positioning drive PA when the actual value supplied by the second angle encoder WG2 corresponds to the target value calculated depending on the format.
- the positioning drive PA is then uncoupled again via the clutch KPA and the clutch on the first impression cylinder G and the clutch KLW in the longitudinal shaft are closed.
- the beautiful and reverse pressure computer SWR additionally monitors the value supplied by the first angle transmitter WG1, to the extent that it does not change. This advantageously provides additional security with regard to the format changeover. This makes it possible to determine whether the couplings of the turning devices also separate properly.
- the perfecting computer SWR continuously or at least temporarily compares the angle values supplied by the first and second angle transmitters WG1, WG2. If there is a change in the difference between these angle values, then the perfecting and reverse pressure computer SWR triggers the machine stop, for example via the machine control (not shown), or prevents the printing machine from starting up from standstill.
- the difference with respect to which the perfecting and offset printing computer SWR compares the angle values supplied by the first and second angle transmitters WG1, WG2 with one another can be, for example, that which results from the changeover process previously carried out.
- the perfecting and reverse printing computer SWR only carries out the intended comparison of the angle values each time the printing press comes to a standstill .
- the invention was described above on a sheet-fed printing press with a convertible turning device.
- the query according to the invention of the angular position of the machine is also used in a printing press with a plurality of reversible turning devices. It is then only essential that a first angle query is carried out in front of the turning devices and the second angle value query in the sheet travel direction after the last turning device.
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- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und Vorrichtung zur Zustandsüberwachung einer umstellbaren Bogendruckmaschine gemäß dem Oberbegriff des Verfahrens- bzw. Vorrichtungsanspruches.The invention relates to a method and device for monitoring the condition of a convertible sheet-fed printing machine according to the preamble of the method and device claim.
Umstellbare Bogendruckmaschinen, welche nach dem Prinzip der Bogenhinterkantenwendung arbeiten sind allgemein bekannt und wahlweise in den Betriebsarten Schön- oder Schön- und Widerdruck einsetzbar. Das Umstellen einer derartigen Druckmaschine von der Betriebsart Schöndruck auf die Betriebsart Schön- und Widerdruck bedeutet dabei, daß der der Wendeeinrichtung nachfolgende Teil der Druckmaschine entsprechend dem Format des Bedruckstoffes gegenüber dem Teil vor der Wendeeinrichtung verstellt werden muß. Derartige Druckmaschinen weisen daher Kupplungs- und Umstelleinrichtungen auf, vermittels den der Betriebsartwechsel durchzuführen ist. Die oben dargestellten Umstellvorgänge sind dabei aus der DE 3 526 123 A1 bekannt. Neben dem formatabhängigen Verdrehen der Druckwerke nach der Wendung müssen noch weitere der Wendung dienenden Baugruppen formatabhängig umgestellt werden, was aus der oben genannten Schrift ebenfalls bekannt ist.Convertible sheet-fed printing presses, which operate on the principle of the use of trailing edges, are generally known and can be used in the modes of perfecting or perfecting. The changeover of such a printing machine from the printing mode to the perfecting mode means that the part of the printing machine following the turning device must be adjusted in relation to the part in front of the turning device in accordance with the format of the printing material. Printing machines of this type therefore have clutch and changeover devices by means of which the mode change is to be carried out. The changeover processes shown above are known from DE 3 526 123 A1. In addition to the format-dependent rotation of the printing units after the turn, other modules serving to change the format must also be converted depending on the format, which is also known from the above-mentioned document.
Da von Schön- auf Schön- und Widerdruck umstellbare Bogendruckmaschinen lösbare Kupplungen im Hauptantrieb aufweisen, muß gewährleistet sein, daß die formatabhängige Einstellung stets erhalten bleibt. Bei derartigen Druckmaschinen werden in der Regel reibschlüssig wirkende Kupplungen verwendet, welche eine beliebige Formateinstellung erlauben. Bei nicht ordnungsgemäßer Funktion oder bei Verunreinigung mit Schmierstoffen können solche Kupplungen einen Schlupf ermöglichen. Schlupf in der Kupplung einer umstellbaren Bogendruckmaschine führt beim Druckbetrieb zu schweren Maschinenschäden, wobei hierdurch auch eine Gefährdung von Bedienpersonen ausgehen kann.Since convertible sheet-fed printing presses can be changed from perfecting to perfecting and perfecting, it must be ensured that the format-dependent setting is always retained. In such printing machines, frictionally acting clutches are generally used, which can be any one Allow format setting. If they do not function properly or are contaminated with lubricants, such couplings can allow slippage. Slip in the coupling of a convertible sheet-fed printing machine leads to severe machine damage during printing operation, which can also endanger operators.
Aus der EP 0 243 700 B1 ist eine Vorrichtung zum Absichern einer Rotationsdruckmaschine bekannt, welche über mechanische Mittel den Klemmzustand der Kupplung der umstellbaren Wendeeinrichtung überprüft. Wegen der Vielzahl der zusätzlich vorzusehenden Bauelemente gestaltet sich diese Lösung aber sehr kostenintensiv.A device for securing a rotary printing press is known from EP 0 243 700 B1, which uses mechanical means to check the clamping condition of the coupling of the convertible turning device. Because of the large number of additional components to be provided, this solution is very cost-intensive.
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren sowie eine Vorrichtung zur Zustandsüberwachung einer umstellbaren Bogendruckmaschine gemäß dem Oberbegriff des Verfahrens bzw. Vorrichtungsanspruches derartig weiterzubilden, so daß in bautechnisch einfacher Weise eine exakte Überprüfung des ordnungsgemäßen Betriebszustandes möglich ist.The object of the present invention is therefore to further develop a method and a device for monitoring the condition of a convertible sheet-fed printing press in accordance with the preamble of the method or device claim, so that an exact check of the correct operating state is possible in a structurally simple manner.
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale des Verfahrens bzw. Vorrichtungsanspruches. Vorteilhafte Weiterbildung der Erfindung ergeben sich aus den entsprechenden Unteransprüchen.This task is solved by the characteristic features of the method or device claim. Advantageous further developments of the invention result from the corresponding subclaims.
Erfindungsgemäß ist vorgesehen, daß eine der Winkelstellung der Druckmaschine entsprechende Größe sowohl vor als auch nach der umstellbaren Wendeeinrichtung erfaßt wird und diese Größen unter Berücksichtigung einer formatabhängigen Winkeldifferenz in der Betriebsart Schön- und Widerdruck miteinander verglichen und ausgewertet werden. Ein ordnungsgemäßer Klemmzustand in der Kupplung der umstellbaren Wendeeinrichtung ergibt sich dabei daraus, daß sich die Differenz dieser Winkelwerte zeitlich nicht ändert. Der Absolutwert dieser Differenz spielt dabei bei der Überwachung keine Rolle, es kommt nur auf die zeitlich Konstanz dieser Differenz an.According to the invention it is provided that a size corresponding to the angular position of the printing machine is detected both before and after the convertible turning device and these sizes are compared and evaluated with one another taking into account a format-dependent angle difference in the perfecting mode. A correct clamping condition in the coupling of the convertible turning device results from the fact that the difference between these angle values does not change over time. The absolute value of this difference does not play a role in monitoring, it only depends on the temporal constancy of this difference.
Vorrichtungsgemäß ist vorgesehen, daß neben einem ersten Winkelgeber vor der ersten Wendeeinrichtung ein zusätzlicher zweiter Winkelgeber nach der letzten Wendeeinrichtung vorgesehen ist. Die Winkelgeber können dabei als Absolutwertgeber ausgebildet sein, aber auch Inkrementalgeber oder dergleichen sind anwendbar. Die Signale der Winkelgeber werden einem Schön- und Widerdruckrechner zugeführt, der die erfindungsgemäß vorgesehene Überwachung durchführt. Durch diesen Schön- und Widerdruckrechner werden dabei auch die Umstellvorgänge für den Betriebsartwechsel von Schön- auf Schön- und Widerdruck und umgekehrt durchgeführt.According to the device, it is provided that in addition to a first angle transmitter in front of the first turning device, an additional second angle transmitter is provided after the last turning device. The angle encoders can be designed as absolute encoders, but incremental encoders or the like can also be used. The signals from the angle transmitters are fed to a perfecting and counterpressure computer which carries out the monitoring provided according to the invention. The conversion processes for changing the operating mode from perfect to perfect and reverse printing and vice versa are also carried out by this perfecting and perfecting computer.
Des weiteren erfolgt die Erläuterung einer bevorzugten Ausführungsform der Erfindung anhand der Figuren 1 und 2. Diese zeigen prinzipiell eine Bogenoffsetdruckmaschine mit einer Wendeeinrichtung nach dem ersten Druckwerk.Furthermore, a preferred embodiment of the invention is explained with reference to FIGS. 1 and 2. These show in principle a sheet-fed offset printing press with a turning device after the first printing unit.
Die Figuren 1 und 2 zeigen in Ansicht bzw. als Draufsicht die ersten fünf Druckwerke einer Bogenoffsetdruckmaschine. Mit G sind die Gegendruckzylinder und mit T die dazwischen liegenden Transfer- bzw. Umführtrommeln gekennzeichnet. Zwischen den Gegendruckzylindern G des ersten und zweiten Druckwerkes ist dabei eine ebenfalls doppeltgroße Wendetrommel W angeordnet, so daß nach entsprechender Umstellung von Schön- auf Schön- und Widerdruck die Bogen nach dem Prinzip der Bogenhinterkantenwendung gewendet und über die Wendetrommel W dem zweiten Gegendruckzylinder G zugeführt werden. Die Bogen werden dabei über eine Anlegertrommel A dem Gegendruckzylinder G des ersten Druckwerkes zugeführt.Figures 1 and 2 show a view or a top view of the first five printing units of a sheetfed offset printing press. G the counter-pressure cylinders and T the intermediate transfer or bypass drums. Between the impression cylinders G of the first and second printing units there is also a double-size reversing drum W, so that after a corresponding changeover from perfecting to perfecting and reverse printing, the sheets are turned according to the principle of the trailing edge of the sheet and fed to the second impression cylinder G via the reversing drum W. . The sheets are fed via a feed drum A to the impression cylinder G of the first printing unit.
Zum Antrieb der Bogenoffsetdruckmaschine ist ein geregelter Gleichstrommotor in einem Hauptantrieb HA vorgesehen, durch den eine Längswelle LW antreibbar ist. Die Längswelle LW weist in diesem Beispiel drei Einspeisungsgetriebe E auf, durch welche die Gegendruckzylinder G des ersten, des dritten und des fünften Druckwerkes angetrieben werden. Wie in Fig. 2 zu erkennen, sind die Gegendruckzylinder G, die Transfertrommel T, die Wendetrommel W sowie die Anlegertrommel A über einen durchgehenden Räderzug R miteinander gekoppelt. Zur Umstellbarkeit der Wendeeinrichtung weist dazu der erste Gegendruckzylinder G in an sich bekannter Weise zwei nebeneinander liegende und relativ zueinander verstellbare sowie über eine nicht dargestellte Kupplung miteinander klemmbare Zahnkränze auf. Die Wendetrommel W weist ein einfachbreites und der nachfolgende Gegendruckzylinder G ein doppeltbreites Zahnrad auf. Die Gegendruckzylinder G und die Transfertrommeln T der nachfolgenden Druckwerke weisen wiederum einfachbreite Zahnräder in einer Ebene liegend auf.To drive the sheetfed offset printing press, a regulated DC motor is provided in a main drive HA, through which a longitudinal shaft LW can be driven. In this example, the longitudinal shaft LW has three feed gears E through which the impression cylinders G of the first, third and fifth printing units are driven. As can be seen in Fig. 2, the impression cylinder G, the transfer drum T, the turning drum W and the Feed drum A coupled to one another via a continuous gear train R. In order to be able to convert the turning device, the first counter-pressure cylinder G has, in a manner known per se, two toothed rings lying next to one another and adjustable relative to one another and which can be clamped to one another via a coupling (not shown). The turning drum W has a single-wide gear and the downstream impression cylinder G has a double-wide gear. The impression cylinders G and the transfer drums T of the subsequent printing units in turn have single-width gearwheels lying in one plane.
Nach der Wendeeinrichtung ist vor dem zweiten Einspeisungsgetriebe E eine elektrisch schaltbare Kupplung KLW in der Längswelle LW angeordnet. An dem Einspeisungsgetriebe E des dritten Druckwerkes ist ferner über eine weitere Kupplung KPA ein Positionierantrieb PA angebracht, mittels dem nach Öffnen der in der Längswelle LW angeordneten Kupplung KLW sowie dem Öffnen der nicht dargestellten Kupplung in dem doppelten Zahnkranz des ersten Gegendruckzylinders G der Teil der Druckmaschine nach der Wendeeinrichtung formatgerecht von Schön- auf Schön- und Widerdruck und umgekehrt verstellt werden kann. Sämtliche Umstellvorgänge und insbesondere das formatgerechte Verfahren der Druckwerke relativ zueinander über den Positionierantrieb PA erfolgt dabei gesteuert durch einen Schön- und Widerdruckrechner SWR. Dieser Schön- und Widerdruckrechner steuert dabei die auch hier nicht angesprochenen weiteren formatabhängigen Umstellvorgänge, wobei hier nur beispielshaft das Verstellen der Greiferöffnungskurve von Schön- auf Schön- und Widerdruck genannt ist.After the turning device, an electrically switchable clutch KLW is arranged in the longitudinal shaft LW in front of the second feed gearbox E. A positioning drive PA is also attached to the feed gear E of the third printing unit via a further clutch KPA, by means of which, after opening the clutch KLW arranged in the longitudinal shaft LW and opening the clutch (not shown) in the double ring gear of the first impression cylinder G, the part of the printing press after the turning device can be adjusted in size from face to face and reverse and vice versa. All of the changeover processes, and in particular the format-appropriate movement of the printing units relative to one another via the positioning drive PA, are controlled by a perfecting and reverse printing computer SWR. This perfecting and reverse printing computer controls the further format-dependent changeover processes, which are also not addressed here, whereby the adjustment of the gripper opening curve from perfecting to perfecting and reverse printing is only mentioned here as an example.
Der Schön- und Widerdruckrechner SWR steht mit zwei Winkelgebern WG1, WG2 in Verbindung. Der erste Winkelgeber WG1 ist eintourig an der einfach großen Anlegertrommel A angebracht. Der zweite Winkelgeber WG2 ist stirnseitig an dem Ende der Längswelle LW hinter dem letzten Einspeisungsgetriebe E angebracht. Da die Längswelle LW sowie die Anlegertrommel A unterschiedlich tourig zueinander laufen, ist dem zweiten Winkelgeber WG2 ein entsprechendes, hier aber nicht dargestelltes Getriebe vorgeschaltet, so daß der zweite Winkelgeber WG2 mit der gleichen Drehzahl wie der erste Winkelgeber läuft. Der erste Winkelgeber WG1 ist ferner mit einer nicht dargestellten Maschinensteuerung verbunden, so daß über den ersten Winkelgeber WG1 die entsprechende Steuerung sämtliche maschinendrehwinkelabhängige Operationen (z.B. Druckan/-abstellung bzw. Bogenabfrage) gesteuert werden. Auch der Schön- und Widerdruckrechner SWR ist über ein nicht dargestelltes Bussystem mit der Maschinensteuerung verbunden.The perfecting and reverse pressure calculator SWR is connected to two angle encoders WG1, WG2. The first angle encoder WG1 is attached to the single large feed drum A with one turn. The second angle encoder WG2 is attached at the end to the end of the longitudinal shaft LW behind the last feed gear E. Since the longitudinal shaft LW and the feed drum A run at different speeds with respect to one another, a corresponding gear, but not shown here, is connected upstream of the second angle encoder WG2, so that the second Angle encoder WG2 runs at the same speed as the first angle encoder. The first angle encoder WG1 is also connected to a machine control, not shown, so that the corresponding control controls all machine-rotation-angle-dependent operations (for example printing on / off or sheet query) via the first angle encoder WG1. The SWR is also connected to the machine control system via a bus system, not shown.
Zum Wechseln der Betriebsart von Schön- auf Schön- und Widerdruck und umgekehrt schaltet nun der Schön- und Widerdruckrechner SWR den Positionierantrieb PA über die Kupplung KPA an das mittlere Einspeisungsgetriebe E. Im normalen Druckbetrieb ist der Positionierantrieb PA über die Kupplung KPA abgekoppelt. Ferner öffnet der Schön- und Widerdruckrechner SWR die Kupplung KLW in der Längswelle LW sowie die nicht dargestellte Kupplung zwischen den beiden Zahnrädern des ersten Gegendruckzylinders G. Entsprechend dem eingegebenen Format steuert der Schön- und Widerdruckrechner SWR den Positionierantrieb PA nun derartig an, so daß die Wendetrommel W sowie die nachfolgenden Druckwerke von beispielsweise Schön- auf Schön- und Widerdruck umgestellt werden. Dazu liest der Schön- und Widerdruckrechner SWR die Winkelwerte des zweiten Winkelgebers WG2 ein und stoppt den Positionierantrieb PA, wenn der vom zweiten Winkelgeber WG2 gelieferte Ist-Wert dem formatabhängig errechneten Soll-Wert entspricht. Sodann wird der Positionierantrieb PA über die Kupplung KPA wieder abgekuppelt und die Kupplung am ersten Gegendruckzylinder G sowie die Kupplung KLW in der Längswelle werden geschlossen. Durch den Schön- und Widerdruckrechner SWR erfolgt während des Umstellvorganges zusätzlich eine Überwachung des von dem ersten Winkelgeber WG1 gelieferten Wertes, dahingehend, daß sich dieser nicht ändert. Somit wird vorteilhafterweise eine zusätzliche Sicherheit bezüglich der Formatumstellung erzielt. Dadurch ist feststellbar, ob die Kupplungen der Wendeeinrichtungen auch ordnungsgemäß trennen.To change the operating mode from perfecting to perfecting and reverse printing and vice versa, the perfecting and reverse pressure calculator SWR now switches the positioning drive PA via the coupling KPA to the central feed gear E. In normal printing operation, the positioning drive PA is decoupled via the coupling KPA. Furthermore, the perfecting computer SWR opens the clutch KLW in the longitudinal shaft LW and the clutch, not shown, between the two gears of the first impression cylinder G. According to the format entered, the perfecting computer SWR controls the positioning drive PA in such a way that the Reversing drum W and the following printing units can be converted from, for example, perfecting to perfecting. For this purpose, the perfecting and reverse printing computer SWR reads in the angle values of the second angle encoder WG2 and stops the positioning drive PA when the actual value supplied by the second angle encoder WG2 corresponds to the target value calculated depending on the format. The positioning drive PA is then uncoupled again via the clutch KPA and the clutch on the first impression cylinder G and the clutch KLW in the longitudinal shaft are closed. During the changeover process, the beautiful and reverse pressure computer SWR additionally monitors the value supplied by the first angle transmitter WG1, to the extent that it does not change. This advantageously provides additional security with regard to the format changeover. This makes it possible to determine whether the couplings of the turning devices also separate properly.
Nach dem oben beschriebenen Umstellvorgang vergleicht der Schön- und Widerdruckrechner SWR ständig oder wenigstens zeitweise die von dem ersten und zweiten Winkelgeber WG1, WG2 gelieferten Winkelwerte. Ergibt sich eine Änderung in der Differenz dieser Winkelwerte, so löst der Schön- und Widerdruckrechner SWR beispielsweise über die nicht dargestellte Maschinensteuerung den Maschinenstopp aus bzw. verhindert ein Anlaufen der Druckmaschine aus dem Stillstand. Die Differenz, hinsichtlich der der Schön- und Widerdruckrechner SWR die vom ersten und zweiten Winkelgeber WG1, WG2 gelieferten Winkelwerte miteinander vergleicht, kann beispielsweise diejenige sein, welche sich durch den zuvor gemachten Umstellvorgang ergibt. Da gerade bei schnellaufenden Druckmaschinen das Einlesen der vom ersten und zweiten Winkelgeber WG1, WG2 gelieferten Winkelwerte zeitkritisch sein kann, ist gemäß einer vorteilhaften Ausführung der Erfindung vorgesehen, daß der Schön- und Widerdruckrechner SWR den vorgesehenen Vergleich der Winkelwerte lediglich bei jedem Stillstand der Druckmaschine durchführt. Dies ist insbesondere dann vorteilhaft, wenn die Winkelwerte der Winkelgeber WG1, WG2 über unterschiedliche Bussysteme dem Schön- und Widerdruckrechner SWR zugeführt werden.
Die Erfindung wurde zuvorstehend an einer Bogendruckmaschine mit einer umstellbaren Wendeeinrichtung beschrieben. Selbstverständlich ist es möglich, daß die erfindungsgemäße Abfrage der Winkelstellung der Maschine auch bei einer Druckmaschine mit mehreren umstellbaren Wendeeinrichtungen angewendet wird. Wesentlich ist dabei dann nur, daß eine erste Winkelabfrage vor den Wendeeinrichtungen und die zweite Winkelwertabfrage in Bogenlaufrichtung nach der letzten Wendeeinrichtung durchgeführt wird.After the changeover process described above, the perfecting computer SWR continuously or at least temporarily compares the angle values supplied by the first and second angle transmitters WG1, WG2. If there is a change in the difference between these angle values, then the perfecting and reverse pressure computer SWR triggers the machine stop, for example via the machine control (not shown), or prevents the printing machine from starting up from standstill. The difference with respect to which the perfecting and offset printing computer SWR compares the angle values supplied by the first and second angle transmitters WG1, WG2 with one another can be, for example, that which results from the changeover process previously carried out. Since the reading in of the angle values supplied by the first and second angle transmitters WG1, WG2 can be time-critical, especially in the case of high-speed printing presses, it is provided according to an advantageous embodiment of the invention that the perfecting and reverse printing computer SWR only carries out the intended comparison of the angle values each time the printing press comes to a standstill . This is particularly advantageous if the angle values of the angle transmitters WG1, WG2 are fed to the perfecting and reverse printing computer SWR via different bus systems.
The invention was described above on a sheet-fed printing press with a convertible turning device. Of course, it is possible that the query according to the invention of the angular position of the machine is also used in a printing press with a plurality of reversible turning devices. It is then only essential that a first angle query is carried out in front of the turning devices and the second angle value query in the sheet travel direction after the last turning device.
- GG
- GegendruckzylinderImpression cylinder
- TT
- TransfertrommelTransfer drum
- WW
- WendetrommelTurning drum
- AA
- AnlegertrommelFeeder drum
- HAHA
- HauptantriebMain drive
- LWLW
- LängswelleLongitudinal shaft
- RR
- RäderzugGear train
- EE
- EinspeisungsgetriebeInfeed gear
- KLWKLW
- Kupplung Längswelle LWCoupling longitudinal shaft LW
- KPA KupplungKPA clutch
- PositionierantriebPositioning drive
- PAPA
- PositionierantriebPositioning drive
- SWRSWR
- Schön- und WiderdruckrechnerFine and reverse printing calculator
- WG1WG1
- erster Winkelgeberfirst angle encoder
- WG2WG2
- zweiter Winkelgebersecond angle encoder
Claims (8)
- Method for condition monitoring of a sheet printing press to be changed over with at least one sheet turning device characterised in that in the sheet running direction prior to and after the turning device which can be changed over the angular position of the printing press is captured in each case, the difference of both of these values is formed and that on a deviation of this difference with respect to a previously given desired value the press drive is interrupted.
- Method according to claim 1 characterised in that the sensing of the angular position of the press takes place in digital fashion.
- Method according to claim 1 or 2 characterised in that the sensing and difference formation of the two angular positions of the printing press takes place at each rendering stationary of the printing press and on a deviation of the difference with respect to the predetermined desired value the printing press is secured against running up.
- Method according to one of the preceding claims characterised in that by means of the angular position sensed after the turning device the change over the press from single side to perfect printing and vice versa takes place.
- Method according to claim 4 characterised in that during a change over process the angular position captured prior to the turning device is checked for time constancy.
- Device for condition monitoring of a sheet printing press which can be changed over with at least one sheet turning device, using one of the method claims 1 to 3 characterised in that installed on the printing press both prior to and also after the turning device which can be changed over are a first and a second angle sensor (WG1, WG2), that these angle sensors (WG1, WG2) are connected to a computer (SWR) by which the formation of a difference of the angular values provided can be carried out and that the computer (SWR) is constructed for the purpose of rendering stationary the main drive (HA) of the printing press if a variation of the difference of the angular values provided with reference to a predetermined desired value is detected.
- Device according to claim 6 characterised in that the angle sensors (WG1, WG2) are constructed as the same type of absolute value sensor.
- Device according to claim 7 characterised in that a positioning drive (PA) is operatively connected with the computer (SWR) by means of which in combination with the second angle sensor (WG2) the change over of the press from single side to perfect printing and vice versa can be carried out.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4426992 | 1994-07-29 | ||
| DE4426992A DE4426992C2 (en) | 1994-07-29 | 1994-07-29 | Method and device for monitoring the condition of a convertible sheet printing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0694387A1 EP0694387A1 (en) | 1996-01-31 |
| EP0694387B1 true EP0694387B1 (en) | 1997-08-13 |
Family
ID=6524507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95109170A Expired - Lifetime EP0694387B1 (en) | 1994-07-29 | 1995-06-14 | Method and means for controlling the position of a convertable sheet printing press |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0694387B1 (en) |
| JP (1) | JP3112149B2 (en) |
| AT (1) | ATE156753T1 (en) |
| DE (2) | DE4426992C2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6684778B2 (en) * | 2001-05-25 | 2004-02-03 | Ryobi, Ltd. | Printing press with a sheet-turning-over-mechanism |
| US9079388B2 (en) * | 2006-02-16 | 2015-07-14 | Heidelberger Druckmaschinen Ag | Control of a printing press using a torsion model and printing press controlled by torsion model |
| DE102007018539B4 (en) * | 2006-05-17 | 2009-12-10 | Manroland Ag | Method for operating a sheet-fed printing machine |
| DE102015118911A1 (en) | 2014-11-05 | 2016-05-12 | manroland sheetfed GmbH | Drive for sheet-fed rotary printing machines |
| DE102016121035A1 (en) * | 2015-11-04 | 2017-05-04 | manroland sheetfed GmbH | Drive for sheet-fed rotary printing machines |
| JP6842938B2 (en) * | 2017-01-31 | 2021-03-17 | リョービＭｈｉグラフィックテクノロジー株式会社 | Printing press drive control device and printing press drive control method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5717714A (en) * | 1980-07-08 | 1982-01-29 | Daiwa Can Co Ltd | Manufacture of canned provision under nitrogen gas atmosphere |
| DD160049A1 (en) * | 1981-06-30 | 1983-04-27 | Volker Eichler | CONTROL SYSTEM FOR MULTICOLOUR BROWN PRINTING MACHINES |
| DD229076A1 (en) * | 1984-09-05 | 1985-10-30 | Polygraph Leipzig | METHOD AND DEVICE FOR AUTOMATIC OPERATION CHANGE |
| DD237426A3 (en) * | 1984-09-05 | 1986-07-16 | Polygraph Leipzig | DEVICE FOR AUTOMATIC OPERATION CHANGE |
| DE3614734A1 (en) * | 1986-04-30 | 1987-11-05 | Heidelberger Druckmasch Ag | DEVICE FOR SECURING A ROTARY PRINTING MACHINE |
| DE3836310C2 (en) * | 1988-10-25 | 1998-01-15 | Heidelberger Druckmasch Ag | Method for setting a turning device on a printing press with several printing units |
| JPH04224950A (en) * | 1990-12-27 | 1992-08-14 | Sumitomo Heavy Ind Ltd | Sheet-fed press with reversal mechanism |
| US5357860A (en) * | 1992-03-27 | 1994-10-25 | Komori Corporation | Cylinder phase adjustment controlling apparatus for printing press |
-
1994
- 1994-07-29 DE DE4426992A patent/DE4426992C2/en not_active Expired - Fee Related
-
1995
- 1995-06-14 DE DE59500504T patent/DE59500504D1/en not_active Expired - Fee Related
- 1995-06-14 EP EP95109170A patent/EP0694387B1/en not_active Expired - Lifetime
- 1995-06-14 AT AT95109170T patent/ATE156753T1/en not_active IP Right Cessation
- 1995-07-28 JP JP07193829A patent/JP3112149B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3112149B2 (en) | 2000-11-27 |
| ATE156753T1 (en) | 1997-08-15 |
| EP0694387A1 (en) | 1996-01-31 |
| DE59500504D1 (en) | 1997-09-18 |
| DE4426992A1 (en) | 1996-02-08 |
| JPH0852860A (en) | 1996-02-27 |
| DE4426992C2 (en) | 1998-01-22 |
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