EP0671265B1 - Method for starting/restarting a sheet printing machine up to production speed, particularly an offset printing machine - Google Patents
Method for starting/restarting a sheet printing machine up to production speed, particularly an offset printing machine Download PDFInfo
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- EP0671265B1 EP0671265B1 EP95102368A EP95102368A EP0671265B1 EP 0671265 B1 EP0671265 B1 EP 0671265B1 EP 95102368 A EP95102368 A EP 95102368A EP 95102368 A EP95102368 A EP 95102368A EP 0671265 B1 EP0671265 B1 EP 0671265B1
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- printing
- sheet
- printing press
- feeder
- speed
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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
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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
- B41F33/04—Tripping devices or stop-motions
- B41F33/06—Tripping devices or stop-motions for starting or stopping operation of sheet or web feed
Definitions
- the invention relates to a method for starting / restarting the continuous printing in a sheet-processing printing machine according to the preamble of claim 1.
- the sheets to be printed are removed from the top of a sheet stack by means of a separating and drag suction in a feeder, conveyed over a feed table to the sheet feeder, aligned there and - if a correct sheet feeder has been determined - detected by a pre-gripper or the like and printed in the individual printing units.
- the feeder is coupled to the drive of the printing press via a magnetic coupling.
- the blowing and suction air for the organs that cause the sheets to be removed from the stack (separating and dragging suction devices) is controlled by switchable solenoid valves.
- start-up / restarting of the production run takes place, for example, or at the start of production after a stopper in such a way that the printing press is first run up to a so-called basic speed when the feeder is uncoupled.
- This basic speed can be, for example, 3,000 sheets / h and is usually designed in such a way that the feeder can still be switched on at this speed via the magnetic coupling.
- the magnetic coupling points positively to one another cooperating coupling parts, so that it is not possible to connect the feeder at a higher speed.
- the organs causing the sheets to be removed from the stack are also switched on. If a first sheet is found to be correctly aligned with the system (front mark query), the sheet is gripped by the pre-gripper. The command "print-on” is then automatically given in the individual printing units, so that the blanket cylinders are placed on the corresponding plate cylinders and, for printing on the first sheet, on the respective impression cylinder.
- the object of the present invention is therefore to develop a method according to the preamble of claim 1 in such a way that the waste which arises when the printing speed is increased can be avoided.
- the feeder is switched on at the basic speed of the printing press, but the organs causing the removal of the sheets from the stack remain switched off. Now that the feeder is switched on, the printing press can be run up to an intended intermediate speed. When this speed is reached, the organs causing the removal of the sheets from the stack are switched on. The sheets now run over the feed table to the machine and a first sheet that has been correctly identified on the machine can now run into the machine. The "Print-On" command is now triggered in the individual printing units in accordance with the sheet travel.
- the settling process for dyeing and dampening begins without disruption since the pressure is already taken up at the intended speed.
- FIG. 1 and FIG. 2 show the time course of the start-up of the printing press and the corresponding switching operations as an abscissa relative to the time axis.
- T is the time axis (abscissa) and V is the printing speed / speed.
- V is the printing speed / speed.
- the feeder is uncoupled, and the suction and blowing air for the corresponding conveying elements is also switched off.
- the cylinders in the individual printing units as well as the application roller of the inking and dampening units are in the "print-down" state.
- the feeder is now switched on at the basic speed VG by appropriately switching the magnetic coupling.
- the separating and drag vacuums remain switched off.
- the speed of the printing press is again increased from the basic speed VG to the production speed VP by correspondingly controlling the main drive according to a predetermined time ramp. After a certain period of time, the printing press reaches the intended production speed VP. It can be provided that during this start-up phase, the damp and Ink rollers are placed on the associated plate cylinder and also to pre-ink the blanket cylinder they are placed on the respective plate cylinder.
- the separating and drag vacuums are switched on at a time t2 by actuating one or more solenoid valves.
- a first sheet is now conveyed to the system via the feed table and is found to be correctly attached to the system at time t3 (front label control), whereupon it is gripped by a pre-gripper and conveyed through the printing press via sheet-guiding cylinders.
- the blanket cylinder is then brought into contact with the impression cylinder in the first printing unit, so that the first sheet is printed in the first printing unit.
- the consequent connection of the blanket cylinders to the impression cylinders in the other printing units is carried out analogously and likewise automatically by a control known per se.
- FIG. 2 shows the exemplary embodiment of the method according to the invention.
- the drive of the printing press is activated in this way at a time t0 when the feeder is uncoupled, so that the printing press runs the basic speed VG.
- the feeder is engaged when the separating and drag vacuums are switched off.
- the printing machine is now ramped up from the basic speed VG to an intermediate speed VZ in accordance with a predetermined time ramp.
- This intermediate speed VZ is, for example, a certain amount below the final intended production speed VP and higher than the speed at which the feeder can still be switched on.
- the air for the separating and dragging vacuum cleaners and the other sheet guiding devices is switched on at a time t2, so that at a time t3 a first sheet correctly detected in the system is inserted into the machine can break in.
- the plate and blanket cylinders are already pre-moistened and pre-inked in the individual printing units.
- the two embodiment variants of the method according to the invention described above are preferably triggered in a program-controlled manner by an automatic control, for example via a machine control center.
- an automatic control for example via a machine control center.
- both automatic start-up and the start-up method described according to the invention can optionally be triggered by the automatic start-up control.
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- Handling Of Cut Paper (AREA)
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Abstract
Description
Die Erfindung betrifft ein Verfahren zum Anfahren/Wiederanfahren des Fortdrucks bei einer bogenverarbeitenden Druckmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a method for starting / restarting the continuous printing in a sheet-processing printing machine according to the preamble of claim 1.
Bei Bogenoffsetdruckmaschinen der weit verbreiteten Art werden die zu bedruckenden Bogen mittels Trenn- und Schleppsauger in einem Anleger von der Oberseite eines Bogenstapels entnommen, über einen Anlegertisch zur Bogenanlage gefördert, dort ausgerichtet und - wenn eine korrekte Bogenanlage festgestellt wurde - durch einen Vorgreifer oder dergleichen erfaßt und in den einzelnen Druckwerken bedruckt. Wie aus der DE 2 930 270 C2 bekannt, ist der Anleger über eine Magnetkupplung mit dem Antrieb der Druckmaschine gekoppelt. Das Schalten der Blas- und Saugluft für die das Abnehmen der Bogen vom Stapel bewirkenden Organe (Trenn- und Schleppsauger) erfolgt über schaltbare Magnetventile.In sheet-fed offset printing machines of the widespread type, the sheets to be printed are removed from the top of a sheet stack by means of a separating and drag suction in a feeder, conveyed over a feed table to the sheet feeder, aligned there and - if a correct sheet feeder has been determined - detected by a pre-gripper or the like and printed in the individual printing units. As is known from
Bei herkömmlichen Bogenoffsetdruckmaschinen erfolgt das Anfahren/Wiederanfahren des Fortdruckes z.B. oder bei Produktionsbeginn nach einem Stopper derart, daß zunächst die Druckmaschine bei abgekuppelten Anleger auf eine sogenannte Grunddrehzahl hochgefahren wird. Diese Grunddrehzahl kann beispielsweise 3.000 Bogen/h betragen und ist in der Regel derart ausgelegt, daß bei dieser Drehzahl noch ein Zuschalten des Anlegers über die Magnetkupplung möglich ist. Damit der Anleger phasenrichtig zur Druckmaschine läuft weist die Magnetkupplung formschlüssig miteinander zusammenwirkende Kupplungsteile auf, so daß ein Zuschalten des Anlegers bei einer höheren Drehzahl nicht möglich ist.In conventional sheetfed offset printing presses, start-up / restarting of the production run takes place, for example, or at the start of production after a stopper in such a way that the printing press is first run up to a so-called basic speed when the feeder is uncoupled. This basic speed can be, for example, 3,000 sheets / h and is usually designed in such a way that the feeder can still be switched on at this speed via the magnetic coupling. To ensure that the feeder runs in phase with the printing press, the magnetic coupling points positively to one another cooperating coupling parts, so that it is not possible to connect the feeder at a higher speed.
Nachdem der Anleger bei der Grunddrehzahl der Druckmaschine zugeschaltet wurde erfolgt ebenfalls ein Zuschalten der das Abnehmen der Bogen vom Stapel bewirkenden Organe. Wenn ein erster Bogen als korrekt an der Anlage ausgerichtet festgestellt wurde (Vordermarkenabfrage) erfolgt das Ergreifen des Bogens durch den Vorgreifer. In den einzelnen Druckwerken wird sodann automatisch das Kommando "Druck-An" gegeben, so daß die Gummituchzylinder an die entsprechenden Plattenzylinder und zum Bedrucken des ersten Bogens an den jeweiligen Gegendruckzylinder angestellt werden.After the feeder has been switched on at the basic speed of the printing press, the organs causing the sheets to be removed from the stack are also switched on. If a first sheet is found to be correctly aligned with the system (front mark query), the sheet is gripped by the pre-gripper. The command "print-on" is then automatically given in the individual printing units, so that the blanket cylinders are placed on the corresponding plate cylinders and, for printing on the first sheet, on the respective impression cylinder.
Erst nach dem zuvorstehend beschriebenen Bogeneinlauf erfolgt ein Hochfahren der Druckgeschwindigkeit auf die vorgesehene Produktions- oder Fortdruckdrehzahl. Die während des Hochfahrens der Druckgeschwindigkeit gedruckten Bogen sind aber in der Regel Makulatur, da sich während des Hochfahrvorganges erst ein Farb-/Feuchtmittelgleichgewicht einstellen muß, also Färbungsunterschiede entstehen. Ferner entsteht durch Antriebstorsion Dublieren bzw. Passerdifferenzen.Only after the sheet inlet described above is the printing speed increased to the intended production or production speed. However, the sheets printed during the ramp-up of the printing speed are generally waste, since a color / fountain solution equilibrium must first be established during the ramp-up process, that is to say color differences arise. Furthermore, duplication or register differences occurs due to drive torsion.
Aus der DE 4 206 626 A1 ist ein Verfahren zur Verringerung von Dublieren beim Anlaufen einer Bogendruckmaschine bekannt, bei welchem beim Eintreffen eines ersten Bogens im jeweiligen Druckwerk die Gummituchzylinder und die Gegendruckzylinder weitgehends rückwirkungsfrei entkoppelt von den vorhergehenden Druckwerken zum Fortdruck aneinander angestellt werden. Durch dieses Verfahren werden wohl die durch das Druck-Anstellen der Druckwerkszylinder auf den Antrieb rückwirkenden Stöße minimiert, trotzdem wird aber aufgrund der durch den Hochfahrvorang gestörten Färbung in Verbindung mit Antriebstorsion die Makulatur nicht wesentlich verringert.From DE 4 206 626 A1, a method for reducing duplication when starting a sheet-fed printing press is known, in which, upon arrival of a first sheet in the respective printing unit, the blanket cylinders and the impression cylinders are largely decoupled from one another in a decoupled manner from the previous printing units for continued printing. This method minimizes the shocks that affect the drive due to the pressure of the printing unit cylinders, but the waste is not significantly reduced due to the coloration caused by the start-up process in connection with drive torsion.
Aus der DE 4 013 075 C1 ist eine Vorrichtung zur Druck-An-/-Abstellung eines Gummituchzylinders im Druckwerk einer Bogenoffsetdruckmaschine bekannt, die es ermöglicht, das Kommando "Druck-An" rückwirkungsfrei auch bei hohen Maschinendrehzahlen auszulösen.From DE 4 013 075 C1, a device for printing on / off a blanket cylinder in the printing unit of a sheet-fed offset printing press is known, which enables the "print on" command to be triggered without reaction, even at high press speeds.
Aus der der US-A-3 450 473 ist ein Verfahren zum Anfahren/Wiederanfahren des Fortdrucks bei bogenverarbeitenden Druckmaschinen bekannt, bei welchen die zu bedruckenden Bogen von einem Stapel eines über eine schaltbare Kupplung mit der Druckmaschine verbundenen Anlegers der Druckmaschine zugeführt werden, der Anleger bei einer niedrigen Grunddrehzahl der Druckmaschine zugeschaltet wird und die Drehzahl der Druckmaschine nach dem Zuschalten des Anlegers auf eine vorgegebene Drehzahl hochgefahren wird, wobei der Druck nach Einlaufen eines ersten Bogens in die Druckmaschine beginnt. Aus dieser Schrift ist es ferner bekannt, unter bestimmten Betriebsbedingungen die Zuführung von Bogen zur Druckmaschine abzubrechen ohne dafür den Anleger anzuhalten und zwar durch Abschaltung der die das Abnehmen der Bogen vom Stapel bewirkenden Organe.From US-A-3 450 473 a method for starting / restarting the continuous printing in sheet-processing printing machines is known, in which the sheets to be printed are fed from a stack of an feeder connected to the printing machine via a switchable coupling, the feeder is switched on at a low basic speed of the printing press and the speed of the printing press is increased to a predetermined speed after the feeder is switched on, the printing beginning after a first sheet has entered the printing press. From this document it is also known, under certain operating conditions, to interrupt the feeding of sheets to the printing press without stopping the feeder for this purpose by switching off the organs which cause the sheets to be removed from the stack.
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren gemäß dem Oberbegriff von Anspruch 1 derartig weiterzubilden, so daß die beim Hochfahren der Druckgeschwindigkeit entstehende Makulatur vermieden werden kann.The object of the present invention is therefore to develop a method according to the preamble of claim 1 in such a way that the waste which arises when the printing speed is increased can be avoided.
Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1.This object is achieved by the characterizing features of claim 1.
Gemäß der Erfindung ist vorgesehen, daß bei der Grundgeschwindigkeit der Druckmaschine der Anleger zugeschaltet wird, wobei jedoch die das Abnehmen der Bogen vom Stapel bewirkenden Organe abgeschaltet bleiben. Nachdem nun der Anleger zugeschaltet ist, kann die Druckmaschine auf eine vorgesehene Zwischendrehzahl hochgefahren werden. Wenn diese Drehzahl erreicht ist erfolgt ein Zuschalten der das Abnehmen der Bogen vom Stapel bewirkenden Organe. Die Bogen laufen nun über den Anlegertisch zur Anlage und ein an der Anlage korrekt festgestellter erster Bogen kann nun in die Maschine einlaufen. Es erfolgt nun das folgerichtige Auslösen des Kommandos "Druck-An" in den einzelnen Druckwerken entsprechend dem Bogenlauf.According to the invention it is provided that the feeder is switched on at the basic speed of the printing press, but the organs causing the removal of the sheets from the stack remain switched off. Now that the feeder is switched on, the printing press can be run up to an intended intermediate speed. When this speed is reached, the organs causing the removal of the sheets from the stack are switched on. The sheets now run over the feed table to the machine and a first sheet that has been correctly identified on the machine can now run into the machine. The "Print-On" command is now triggered in the individual printing units in accordance with the sheet travel.
Der Einschwingvorgang für Färbung und Feuchtung beginnt ohne Störungen da der Druck bereits mit der vorgesehenen Geschwindigkeit aufgenommen wird.The settling process for dyeing and dampening begins without disruption since the pressure is already taken up at the intended speed.
Ferner werden während des Hochfahrens der Maschine auf die Zwischendrehzahl keine Bogen gedruckt, die aufgrund von Antriebstorsion und dadurch hervorgerufenen Dublierens bzw. Passerabweichungen zur Makulatur sind.Furthermore, during the start-up of the machine, no sheets are printed on the intermediate speed, which are due to drive torsion and duplication or misregistration caused by the waste.
Da der Anleger über die Magnetkupplung nach wie vor bei Grunddrehzahl der Druckmaschine zugeschaltet wird und erst danach das Hochfahren der Maschine erfolgt, wirkt auf die Kupplungsteile keine zusätzliche Belastung. Das Zuschalten der Luft für die Trenn- und Schleppsauger sowie die sonstigen, das Abnehmen der Bogen vom Stapel bewirkenden Organe (z.B. Blasluft usw.) stellt bei einer hohen Maschinengeschwindigkeit und somit auch Anlegergeschwindigkeit kein Problem dar.Since the feeder is still switched on at the base speed of the printing press via the magnetic coupling and the machine is only started up after this, there is no effect on the coupling parts additional load. Switching on the air for the separating and drag vacs as well as the other organs that cause the sheets to be removed from the stack (e.g. blown air, etc.) is not a problem when the machine speed is high and therefore the feeder speed is also not a problem.
Des weiteren erfolgt die Erläuterung von einem vorteilhaften Ausführungsbeispiel der Erfindung anhand der Figur 2. Sowohl Fig. 1 als auch Fig. 2 zeigen gegenüber der Zeitachse als Abszisse den zeitlichen Verlauf des Hochfahrens der Druckmaschine sowie die entsprechenden Schaltvorgänge.Furthermore, an advantageous exemplary embodiment of the invention is explained with reference to FIG. 2. Both FIG. 1 and FIG. 2 show the time course of the start-up of the printing press and the corresponding switching operations as an abscissa relative to the time axis.
In Fig. 1 sowie Fig. 2 ist mit T die Zeitachse (Abszisse) und mit V die Druckgeschwindigkeit/Drehzahl angegeben. Wie in Fig. 1 dargestellt wird zu einem Zeitpunkt t0 der Hauptantrieb der Druckmaschine eingeschaltet, so daß bei abgekuppelten Anleger die Geschwindigkeit V der Druckmaschine von V = 0 nach einer vorgegebenen Zeitrampe auf die Grunddrehzahl VG hochgefahren wird. Der Anleger ist abgekuppelt, ebenfalls ist die Saug- und Blasluft für die entsprechenden Förderorgane abgeschaltet. Die Zylinder in den einzelnen Druckwerken sowie die Auftragwalze der Farb- und Feuchtwerke befinden sich im Zustand "Druck-Ab".In Fig. 1 and Fig. 2, T is the time axis (abscissa) and V is the printing speed / speed. As shown in FIG. 1, the main drive of the printing press is switched on at a time t0, so that when the feeder is uncoupled, the speed V of the printing press is increased from V = 0 to the basic speed VG after a predetermined time ramp. The feeder is uncoupled, and the suction and blowing air for the corresponding conveying elements is also switched off. The cylinders in the individual printing units as well as the application roller of the inking and dampening units are in the "print-down" state.
Zu einem Zeitpunkt t1 wird nun bei der Grunddrehzahl VG der Anleger durch entsprechendes Schalten der Magnetkupplung zugeschaltet. Die Trenn- und Schleppsauger bleiben nach wie vor abgeschaltet.At a point in time t1, the feeder is now switched on at the basic speed VG by appropriately switching the magnetic coupling. The separating and drag vacuums remain switched off.
Nachdem der Anleger zum Zeitpunkt t1 eingekuppelt wurde wird nun die Geschwindigkeit der Druckmaschine von der Grunddrehzahl VG wiederum durch entsprechendes Ansteuern des Hauptantriebs gemäß einer vorgegebenen Zeitrampe auf die Produktionsdrehzahl VP hochgefahren. Nach einer bestimmten Zeitspanne erreicht die Druckmaschine die vorgesehene Produktionsdrehzahl VP. Es kann vorgesehen sein, daß während dieser Hochfahrphase bereits in den einzelnen Druckwerken zum Voreinfärben und Vorfeuchten die Feucht- und Farbauftragwalzen an die zugehörigen Plattenzylinder angestellt sind und ferner auch zum Voreinfärben des Gummituchzylinders diese an die jeweiligen Plattenzylinder angestellt werden.After the feeder has been engaged at time t1, the speed of the printing press is again increased from the basic speed VG to the production speed VP by correspondingly controlling the main drive according to a predetermined time ramp. After a certain period of time, the printing press reaches the intended production speed VP. It can be provided that during this start-up phase, the damp and Ink rollers are placed on the associated plate cylinder and also to pre-ink the blanket cylinder they are placed on the respective plate cylinder.
Nachdem nun die Druckmaschine ihre Produktionsdrehzahl VP erreicht hat werden zu einem Zeitpunkt t2 durch Ansteuern eines oder mehrerer Magnetventile die Trenn- und Schleppsauger eingeschaltet. Ein erster Bogen wird nun über den Anlegertisch zur Anlage befördert und zum Zeitpunkt t3 als korrekt an der Anlage anliegend festgestellt (Vordermarkenkontrolle), woraufhin er durch einen Vorgreifer erfaßt und über bogenführende Zylinder durch die Druckmaschine gefördert wird. Zu einem Zeitpunkt t4 erfolgt sodann das Anstellen des Gummituchzylinders im ersten Druckwerk an dem Gegendruckzylinder, so daß der erste Bogen im ersten Druckwerk bedruckt wird. Das folgerichtige Zuschalten der Gummituchzylinder an die Gegendruckzylinder in den übrigen Druckwerken erfolgt analog und ebenfalls automatisch durch eine an sich bekannte Steuerung.Now that the printing press has reached its production speed VP, the separating and drag vacuums are switched on at a time t2 by actuating one or more solenoid valves. A first sheet is now conveyed to the system via the feed table and is found to be correctly attached to the system at time t3 (front label control), whereupon it is gripped by a pre-gripper and conveyed through the printing press via sheet-guiding cylinders. At a point in time t4, the blanket cylinder is then brought into contact with the impression cylinder in the first printing unit, so that the first sheet is printed in the first printing unit. The consequent connection of the blanket cylinders to the impression cylinders in the other printing units is carried out analogously and likewise automatically by a control known per se.
Fig. 2 zeigt das Ausführungsbeispiel des erfindungsgemäßen Verfahrens. Analog zu der vorstehenden Erläuterung wird hier zu einem Zeitpunkt t0 der Antrieb der Druckmaschine bei abgekuppelten Anleger derartig angesteuert, so daß die Druckmaschine die Grunddrehzahl VG fährt. Zu einem Zeitpunkt t1 erfolgt das Einkuppeln des Anlegers bei abgestellten Trenn- und Schleppsaugern.2 shows the exemplary embodiment of the method according to the invention. Analogously to the above explanation, the drive of the printing press is activated in this way at a time t0 when the feeder is uncoupled, so that the printing press runs the basic speed VG. At a point in time t1, the feeder is engaged when the separating and drag vacuums are switched off.
Gemäß einer vorgegebenen Zeitrampe wird nun die Druckmaschine von der Grunddrehzahl VG auf eine Zwischendrehzahl VZ hochgefahren. Diese Zwischendrehzahl VZ liegt beispielsweise um einen bestimmten Betrag unterhalb der endgültig vorgesehene Produktionsdrehzahl VP und höher als diejenige Drehzahl, bei welcher der Anleger noch zugeschaltet werden kann. Nachdem nun die Druckmaschine diese Zwischendrehzahl VZ erreicht hat, wird zu einem Zeitpunkt t2 die Luft für die Trenn- und Schleppsauger sowie die sonstigen Bogenführungsorgane zugeschaltet, so daß zu einem Zeitpunkt t3 ein erster korrekt an der Anlage festgestellter Bogen in die Maschine einlaufen kann. Auch hier kann vorgesehen sein, daß in den einzelnen Druckwerken die Platten- und Gummituchzylinder bereits vorgefeuchtet und voreingefärbt werden.The printing machine is now ramped up from the basic speed VG to an intermediate speed VZ in accordance with a predetermined time ramp. This intermediate speed VZ is, for example, a certain amount below the final intended production speed VP and higher than the speed at which the feeder can still be switched on. Now that the printing machine has reached this intermediate speed VZ, the air for the separating and dragging vacuum cleaners and the other sheet guiding devices is switched on at a time t2, so that at a time t3 a first sheet correctly detected in the system is inserted into the machine can break in. It can also be provided here that the plate and blanket cylinders are already pre-moistened and pre-inked in the individual printing units.
Nachdem nun nach dem Zeitpunkt t3 der Bogeneinlauf in die Druckmaschine begonnen hat, erfolgt dann beispielsweise ebenfalls bei der Zwischendrehzahl VZ das folgerichtige Zuschalten der Plattenzylinder an die entsprechenden Gegendruckzylinder in den einzelnen Druckwerken. In Fig. 1 ist lediglich der entsprechende Zeitpunkt t4 für das erste Druckwerk angedeutet. Der erste Bogen in der Druckmaschine wird somit bei der Zwischendrehzahl VZ bedruckt. Nun kann vorgesehen sein, daß, nachdem in sämtlichen Druckwerken der Druck zugeschaltet wurde, die Drehzahl V der Druckmaschine von der Zwischendrehzahl VZ auf die endgültig vorgesehene Produktionsdrehzahl VP hochgefahren wird.Now that the sheet entry into the printing press has begun after time t3, the logical connection of the plate cylinders to the corresponding impression cylinders in the individual printing units then also takes place, for example, at the intermediate speed VZ. In Fig. 1, only the corresponding time t4 for the first printing unit is indicated. The first sheet in the printing press is thus printed at the intermediate speed VZ. It can now be provided that, after the pressure has been switched on in all printing units, the speed V of the printing press is increased from the intermediate speed VZ to the final intended production speed VP.
Die beiden voranstehend beschriebenen Ausführungsvarianten des erfindungsgemäßen Verfahrens werden vorzugsweise durch eine automatische Steuerung beispielsweise über einen Maschinenleitstand programmgesteuert ausgelöst. Dabei kann insgesamt vorgesehen sein, daß durch die automatische Anfahrsteuerung sowohl ein herkömmliches Hochfahren als auch das erfindungsgemäß beschriebene Anlaufverfahren wahlweise auslösbar ist.The two embodiment variants of the method according to the invention described above are preferably triggered in a program-controlled manner by an automatic control, for example via a machine control center. Overall, it can be provided that both automatic start-up and the start-up method described according to the invention can optionally be triggered by the automatic start-up control.
Claims (1)
- Process for running up/re-running up to continuous printing in a sheet processing printing press, particularly an offset sheet printing press, in which the sheets to be printed are fed from a pile of a feeder of the printing press connected via a switchable clutch with the printing press, wherein the feeder can be switched in at a low base rotational speed (VG) of the printing press, the rotational speed of the printing press after switching in the feeder is run up to a pre-set rotational speed (VZ; VP) and the printing begins following the running in of a first sheet into the printing press, characterised in that on switching on the feeder at the low base rotational speed (VG), the elements effecting the removal of the sheet from the pile remain switched off, that the printing press is run up to an intermediate rotational speed (VZ) lying above the base rotational speed (VG) and below the production rotational speed (VP) provided for the continuous printing, and that after achieving the intermediate rotational speed (VZ), the switching in of the elements effecting the feeding of the sheets from the pile is switched in and the printing begins following running in of a first sheet into the printing press.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4407631A DE4407631C1 (en) | 1994-03-08 | 1994-03-08 | Method for starting / restarting the production run in a sheet-processing printing machine, in particular sheet-fed offset printing machine |
| DE4407631 | 1994-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0671265A1 EP0671265A1 (en) | 1995-09-13 |
| EP0671265B1 true EP0671265B1 (en) | 1997-08-13 |
Family
ID=6512125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95102368A Expired - Lifetime EP0671265B1 (en) | 1994-03-08 | 1995-02-21 | Method for starting/restarting a sheet printing machine up to production speed, particularly an offset printing machine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5584244A (en) |
| EP (1) | EP0671265B1 (en) |
| JP (1) | JP2695390B2 (en) |
| AT (1) | ATE156755T1 (en) |
| DE (2) | DE4407631C1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014116074A1 (en) | 2014-11-04 | 2016-05-04 | manroland sheetfed GmbH | Control for sheetfed presses |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19639134C2 (en) * | 1996-09-24 | 1999-03-25 | Roland Man Druckmasch | Procedure for starting / restarting the production run |
| DE19916470A1 (en) * | 1999-04-13 | 2000-10-26 | Roland Man Druckmasch | Method and device for starting up a sheet-fed printing machine |
| US20020084567A1 (en) * | 2000-12-28 | 2002-07-04 | Holbrook Russell W. | Method for providing an inserter system with a variable input speed at startup |
| 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 |
| DE102006007181A1 (en) * | 2006-02-16 | 2007-08-23 | Heidelberger Druckmaschinen Ag | Control of a printing machine by means of a torsion model |
| DE102007000952A1 (en) * | 2007-09-20 | 2009-04-02 | Koenig & Bauer Aktiengesellschaft | Method for booting up a rotary printing machine |
| DE102007032922B4 (en) * | 2007-07-14 | 2015-05-07 | manroland sheetfed GmbH | Method for operating a sheet-fed printing machine |
| JP2009028937A (en) * | 2007-07-25 | 2009-02-12 | Ryobi Ltd | Water supply control mechanism of printer |
| DE102007057732A1 (en) * | 2007-11-30 | 2009-06-04 | Koenig & Bauer Aktiengesellschaft | Method for starting / restarting a sheet-fed printing machine |
| JP5281851B2 (en) * | 2008-08-28 | 2013-09-04 | リョービ株式会社 | Feed speed control device for sheet-fed printing press |
| DE102009017898A1 (en) | 2009-04-17 | 2010-10-21 | Heidelberger Druckmaschinen Ag | Print plate moistening method for offset printing unit of printing machine, involves determining speed of fountain roller rotation during moistening based on print speed of subsequent printing process or based on current machine speed |
| DE102012024734B4 (en) | 2012-01-18 | 2023-04-06 | Heidelberger Druckmaschinen Ag | Method for feeding sheets to a printing machine |
| US10227197B2 (en) * | 2013-08-16 | 2019-03-12 | The Procter & Gamble Plaza | Method for reducing the effects of parent roll variations during unwinding |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3460473A (en) * | 1966-12-28 | 1969-08-12 | Harris Intertype Corp | Rotary sheet fed machine |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3056346A (en) * | 1960-01-14 | 1962-10-02 | Addressograph Multigraph | Printing machine |
| US3195456A (en) * | 1963-11-18 | 1965-07-20 | Cutler Hammer Inc | Timing and sequencing control system for sheet fed rotary printing press |
| IT991860B (en) * | 1973-07-25 | 1975-08-30 | Nebiolo Spa | ROTARY PRINTING MACHINE FOR SINGLE SHEETS |
| ES427105A1 (en) * | 1974-06-08 | 1976-07-16 | Impression Textil Maquinaria | Fabric printing machine |
| JPS6010976B2 (en) * | 1975-08-18 | 1985-03-22 | 株式会社リコー | Printing machine paper feed timing adjustment device |
| DD125119A1 (en) * | 1976-03-15 | 1977-04-06 | ||
| US4038921A (en) * | 1976-04-28 | 1977-08-02 | Halm Instrument Co., Inc. | Means to connect printing presses in tandem |
| DE2853901C2 (en) * | 1978-12-14 | 1982-10-28 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Impression device for a printing machine, in particular a rotary printing machine |
| DE2921955C2 (en) * | 1979-05-30 | 1982-06-09 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Sheet feeder for a sheet-fed printing press |
| DE2930270C2 (en) * | 1979-07-26 | 1986-04-24 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Control device for the feeding of sheets |
| JP2535428B2 (en) * | 1990-04-13 | 1996-09-18 | エス・ケイエンジニアリング株式会社 | Sheet supply device |
| DE4013075C1 (en) * | 1990-04-25 | 1991-06-20 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | |
| US5272975A (en) * | 1990-04-25 | 1993-12-28 | Man Roland Druckmaschinen Ag | Throw-on/throw-off device for a blanket cylinder with a printing speed dependent control system for a sheet-fed offset press |
| DE4013106C1 (en) * | 1990-04-25 | 1991-12-12 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | |
| DE69107427T2 (en) * | 1990-11-28 | 1995-09-28 | Ward Holding Co | Starting and stopping the printing of fed sheets. |
| DE4206626A1 (en) * | 1992-03-03 | 1993-09-09 | Heidelberger Druckmasch Ag | METHOD FOR REDUCING DUBLIERS WHEN STARTING A SHEET PRINTING MACHINE |
-
1994
- 1994-03-08 DE DE4407631A patent/DE4407631C1/en not_active Expired - Fee Related
-
1995
- 1995-02-21 AT AT95102368T patent/ATE156755T1/en not_active IP Right Cessation
- 1995-02-21 DE DE59500485T patent/DE59500485D1/en not_active Expired - Lifetime
- 1995-02-21 EP EP95102368A patent/EP0671265B1/en not_active Expired - Lifetime
- 1995-03-08 JP JP7048607A patent/JP2695390B2/en not_active Expired - Fee Related
- 1995-03-08 US US08/399,058 patent/US5584244A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3460473A (en) * | 1966-12-28 | 1969-08-12 | Harris Intertype Corp | Rotary sheet fed machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014116074A1 (en) | 2014-11-04 | 2016-05-04 | manroland sheetfed GmbH | Control for sheetfed presses |
Also Published As
| Publication number | Publication date |
|---|---|
| US5584244A (en) | 1996-12-17 |
| EP0671265A1 (en) | 1995-09-13 |
| DE59500485D1 (en) | 1997-09-18 |
| ATE156755T1 (en) | 1997-08-15 |
| JPH07256870A (en) | 1995-10-09 |
| DE4407631C1 (en) | 1995-10-19 |
| JP2695390B2 (en) | 1997-12-24 |
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