EP1900523A2 - Method for operating a drying unit of a printing press - Google Patents
Method for operating a drying unit of a printing press Download PDFInfo
- Publication number
- EP1900523A2 EP1900523A2 EP07017359A EP07017359A EP1900523A2 EP 1900523 A2 EP1900523 A2 EP 1900523A2 EP 07017359 A EP07017359 A EP 07017359A EP 07017359 A EP07017359 A EP 07017359A EP 1900523 A2 EP1900523 A2 EP 1900523A2
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- Prior art keywords
- air
- printing operation
- operated
- printing
- volume flow
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/045—Drying sheets, e.g. between two printing stations by radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/0463—Drying sheets, e.g. between two printing stations by convection
- B41F23/0466—Drying sheets, e.g. between two printing stations by convection by using heated air
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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
- B41F33/0009—Central control units
Definitions
- the invention relates to a method for operating a dryer device of a printing press according to the preamble of claim 1 or 9.
- Sheet-fed printing machines are known from practice, which have at least one drying device in addition to the printing units or coating units. With the help of such driers printing sheet can be dried to z. B. to prevent printed sheets from sticking together during removal from the sheet-fed printing press to form a Auslegestapels. Furthermore, it is known to dry with the help of a dryer printing sheet between the application of partial printing images of paint, so as to allow a high-quality overprint of partial printing images of paint.
- the drying devices of known sheet-fed printing machines usually have a heat radiating device and a thermal air device, heat radiation can be directed onto the printed printed sheets with the aid of the heat radiating device, and a temperature-controlled air jet can be directed onto the printed printed sheets with the aid of the thermal air device.
- the present invention now relates to a method for operating a dryer device of a printing press.
- a printing machine with a dryer wherein the dryer is operated using a controller.
- the control is supplied with at least one signal of a variable characterizing the printing process, as a result of which the control generates signals which change the operation of the drying device.
- the DE 43 03 266 B4 relates to a method of operating a printing press with a dryer, wherein the printing operation is taken on the printing press only when the dryer device has reached optimum operating conditions.
- the optimum operating conditions of the drying device are determined, in particular, as a function of the ambient temperature, the color and the lacquer or their layer thickness and, if appropriate, depending on further parameters.
- the present invention is based on the problem to provide a novel method for operating a dryer device of a printing press.
- this problem is solved by a method according to claim 9.
- the dryer device heated up before recording the printing operation, namely such that when the heat radiating device, the thermal air supply as long as with maximum thermal air power but operated with respect to the pressure reduced supply air flow and a reduced pressure compared to the exhaust air volume flow until the air temperature reaches a defined value.
- the invention relates to a method for operating a dryer device of a printing machine, preferably a sheet-fed press, which comprises a plurality of printing units and / or coating units.
- the drying device to be operated in the context of the method according to the invention comprises at least one heat radiating device and at least one thermal air device, wherein a tempered air jet can be directed onto the printed sheets by means of the heat radiating device on the printed sheets heat radiation and with the aid of the thermal air device.
- the heat radiating device and the thermal air device are arranged one behind the other in the transport direction of the printed sheet.
- the heat radiating device of the drying device is operated with a defined heat radiator output.
- the thermal air device of the drying device is operated in the regular printing operation of the printing press and thus in the regular drying operation of the dryer device with a defined supply air volume flow, a defined exhaust air volume flow and a defined air temperature providing thermal air.
- the present invention now relates to such details of the operation of a drying device, by means of which the dryer device can be operated in such a way that optimum drying of the printed sheets achieved and the printing of waste paper at the occurrence of disturbances or interruptions in printing operation or when recording the printing operation can be avoided.
- step 11 it is continuously checked whether a malfunction or an interruption of the printing operation occurs during the regular printing operation. If it is determined that there is no disturbance or interruption of the printing operation, then branching back to step 10 takes place. If, on the other hand, it is determined in step 10 that there is a fault or interruption of the printing operation, a branch is made to step 12.
- step 12 immediately after the occurrence of the disturbance or interruption of the printing operation, the heat radiating device is operated with reduced heat radiating power, in particular immediately after the occurrence of the disturbance or interruption of the printing operation, the heat radiating device off.
- the operating parameters of the thermal air device initially remain unchanged.
- step 12 it is checked in a step 13 whether the disturbance or interruption of the printing operation is eliminated. If it is found that the fault or interruption has been eliminated, starting from step 13 back to step 10 and the printing operation and thus the drying operation resumed, for which purpose the heat radiating device with the defined for the regular printing operation and thus the regular drying operation heat radiator performance is operated.
- step 14 determines whether the time after the occurrence of the disturbance or the interruption of the printing operation is smaller than a predetermined first period. If this is the case, the method branches back from step 14 to step 13. If, on the other hand, it is determined in step 14 that the defined first period of time has been exceeded, the method branches off from step 14 to step 15.
- step 15 immediately after the end of the first time period, the thermo-ventilation device of the dryer device is operated with a reduced supply air volume flow, a reduced exhaust air volume flow and a thermal air power providing a reduced air temperature, wherein the heat radiator device remains switched off.
- the reduced air temperature to be provided in step 15 is in particular 80% of the air temperature defined for the regular pressure operation. However, this value of 80% is purely exemplary and, depending on the method and design, can also assume any other value.
- the thermal air output of the thermal-air device is reduced, so that are not damaged by the thermal air acted assemblies of the printing press or dryer device.
- step 16 it is checked in step 16 whether, subsequent to the expiration of the first time period, the malfunction or interruption of the printing operation is eliminated. If this is the case, then from step 16 to step 10, 10 branches, d. H. the printing operation of the printing press and the drying operation of the dryer device is resumed, for which purpose the thermal air device of the dryer with the defined for the regular printing operation or regular drying operation supply air flow, with the defined for the printing operation and drying operation exhaust air volume flow and with one for the printing operation and so that drying operation defined air temperature-providing thermal air power is operated.
- step 16 If, on the other hand, it is determined in step 16 that the disturbance or interruption of the printing operation is not eliminated, the system branches to step 17, wherein it is checked in step 17 whether a second time interval adjoining the first time span is exceeded. If it is determined in step 17 that the second period of time has not yet been exceeded, the method branches back to step 16. If, on the other hand, it is determined in step 17 that the second time span has been exceeded, that is to say that the fault or interruption of the printing operation has not been eliminated either within the first time span or within the second time span, then the process branches to step 18.
- step 18 the drying device is then transferred to a standby mode, wherein in the standby mode, the heat radiating device is switched off and the thermal air device is operated with minimized thermal air power.
- step 19 After the drier has been transferred to the standby mode in step 18, it is checked in step 19 whether the malfunction or interruption of the printing operation is eliminated in the standby mode, and if it is determined that the malfunction is not eliminated, step 19 is branched back. Obviously, if it is determined in step 19 that the failure or the interruption of the printing operation is eliminated within the standby mode, the process branches from step 19 to step 20 and preheating of the dryer device is performed.
- the thermal air device When preheating the dryer device in the sense of step 20, the thermal air device is operated with the heat radiating device off with maximum thermal air power, but with respect to the regular Duckfeld the printing press and thus the regular drying operation of the dryer reduced supply air volume flow and reduced exhaust air volume flow until the air temperature has reached a defined value , Only then, when the air temperature has reached this defined value in step 20, is branched back to step 10 and resumed the regular printing operation and thus the regular drying operation.
- This defined value of the air temperature which is to be achieved during preheating in step 20, is in particular 80% of the air temperature defined for the regular pressure operation. This value of 80% is again purely exemplary and, depending on the method and design, can also assume any other value.
- the thermal air device Upon receipt of the regular printing operation and thus of the regular drying operation, the thermal air device is operated with the supply air volume flow defined for the regular pressure operation, with the exhaust air volume flow defined for the regular pressure operation and with the thermal air power provided for the air temperature defined for the regular pressure operation.
- the heat radiating device of the drying device is then operated with the heat radiator power defined for the regular printing operation.
- the method according to FIG. 1 distinguishes between three phases when a fault or interruption occurs in the printing operation.
- a first phase which immediately follows the occurrence of the interruption or disturbance, is defined by the first time period, wherein within the first time period only the operating parameters of the heat radiating device are adjusted, but the operating parameters of the thermal air device remain unchanged. If the printing operation is not resumed within this first phase, then within a second phase, which is defined by the second time period, the operating parameters of the thermo-ventilation device are adapted such that a reduced air temperature is provided at reduced supply air volume flow and reduced exhaust air volume flow, which in particular 80 % of the air temperature of the regular printing operation.
- the third phase follows, within which the thermal air device is operated in standby mode.
- the press cools down to such an extent that, when in standby mode, the disturbance of the printing operation or interruption thereof is eliminated, it is necessary to preheat the printing press or dryer device before starting the printing operation.
- the thermo-ventilation device is operated with a reduced supply air volume flow and reduced exhaust air volume flow, in such a way that the air temperature reaches a defined value, which corresponds in particular to 80% of the air temperature of the thermo-air in the regular pressure operation or drying operation. This value of 80% is again purely exemplary and, depending on the method and design, can also assume any other value.
- the above preheating function of the method according to the invention can be carried out not only when the printing operation resumes from the standby mode, but such preheating can also take place when a printing press is restarted.
- the method according to the invention it is possible to effectively prevent waste from being printed on starting the printing press and after eliminating a relatively long interruption or interruption of the printing operation by Preheating of the printing press or dryer device takes place before recording the actual printing operation. Furthermore, when an interruption or malfunction of the printing operation occurs, the operating parameters of the drying device are successively adapted to be able to resume printing operation immediately in the presence of short disturbances, and to avoid overheating of the printing press or dryer device on the other hand in the presence of long faults. Energy can be saved with the method according to the invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Betreiben einer Trocknereinrichtung einer Druckmaschine nach dem Oberbegriff des Anspruchs 1 bzw. 9.The invention relates to a method for operating a dryer device of a printing press according to the preamble of claim 1 or 9.
In Bogendruckmaschinen werden Druckbogen nacheinander durch mehrere hintereinander angeordnete Druckwerke bzw. Lackwerke bewegt, wobei in jedem der Druckwerke ein Teildruckbild in einer Druckfarbe bzw. in jedem Lackwerk ein Teildruckbild in einem Lack auf die Druckbogen aufgetragen wird. Durch das Übereinanderdrucken mehrerer solcher Teildruckbilder wird letztendlich das gewünschte Druckbild auf den Druckbogen erzeugt.In sheet-fed printing presses are successively moved by a plurality of successively arranged printing units or coating units, wherein in each of the printing units a partial image in a printing ink or in each coating unit a partial image in a paint on the sheet is applied. By overprinting several such partial printed images ultimately the desired print image is generated on the sheet.
Aus der Praxis sind Bogendruckmaschinen bekannt, die zusätzlich zu den Druckwerken bzw. Lackwerken mindestens eine Trocknereinrichtung aufweisen. Mit Hilfe solcher Trocknereinrichtungen können Druckbogen getrocknet werden, um so z. B. zu verhindern, dass bedruckte Druckbogen beim Ausschleusen aus der Bogendruckmaschine unter Bildung eines Auslegestapels miteinander verkleben. Weiterhin ist es bekannt, mit Hilfe einer Trocknereinrichtung Druckbogen zwischen dem Auftragen von Teildruckbildern aus Lack zu trocknen, um so einen qualitativ hochwertigen Übereinanderdruck von Teildruckbildern aus Lack zu ermöglichen.Sheet-fed printing machines are known from practice, which have at least one drying device in addition to the printing units or coating units. With the help of such driers printing sheet can be dried to z. B. to prevent printed sheets from sticking together during removal from the sheet-fed printing press to form a Auslegestapels. Furthermore, it is known to dry with the help of a dryer printing sheet between the application of partial printing images of paint, so as to allow a high-quality overprint of partial printing images of paint.
Die Trocknereinrichtungen bekannter Bogendruckmaschinen verfügen üblicherweise über eine Wärmestrahlereinrichtung sowie eine Thermolufteinrichtung, wobei mit Hilfe der Wärmestrahlereinrichtung Wärmestrahlung auf die bedruckten Druckbogen gerichtet werden kann, und wobei mit Hilfe der Thermolufteinrichtung ein temperierter Luftstrahl auf die bedruckten Druckbogen gerichtet werden kann. Die hier vorliegende Erfindung betrifft nun ein Verfahren zum Betreiben einer Trocknereinrichtung einer Druckmaschine.The drying devices of known sheet-fed printing machines usually have a heat radiating device and a thermal air device, heat radiation can be directed onto the printed printed sheets with the aid of the heat radiating device, and a temperature-controlled air jet can be directed onto the printed printed sheets with the aid of the thermal air device. The present invention now relates to a method for operating a dryer device of a printing press.
Aus der
Die
Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde ein neuartiges Verfahren zum Betreiben einer Trocknereinrichtung einer Druckmaschine zu schaffen.On this basis, the present invention is based on the problem to provide a novel method for operating a dryer device of a printing press.
Dieses Problem wird nach einem ersten Aspekt der hier vorliegenden Erfindung durch Verfahren gemäß Anspruch 1 gelöst. Hiernach wird dann, wenn während des Druckbetriebs eine Störung oder eine Unterbrechung auftritt, während einer ersten Zeitspanne nach Auftreten der Störung oder der Unterbrechung die Wärmestrahlereinrichtung mit verringerter Wärmestrahlerleistung betrieben oder abgeschaltet und die Thermolufteinrichtung mit unveränderten Betriebsparametern betrieben, wobei dann, wenn innerhalb der ersten Zeitspanne die Störung oder Unterbrechung nicht beseitigt wird, die Thermolufteinrichtung für eine sich an die erste Zeitspanne anschließende zweite Zeitspanne mit einem verringerten Zuluftvolumenstrom, einem verringerten Abluftvolumenstrom und einer eine verringerte Lufttemperatur bereitstellenden Thermoluftleistung betrieben wird.This problem is solved according to a first aspect of the present invention by the method according to claim 1. Thereafter, when a malfunction or interruption occurs during the printing operation, during a first period after the occurrence of the disturbance or the interruption, the heat radiator is operated or turned off with the radiator heat and the thermostating device operates with the operating parameters unchanged, and if within the first period the disturbance or interruption is not eliminated, the thermal air device is operated for a second period of time subsequent to the first time period with a reduced supply air volume flow, a reduced exhaust air volume flow and a thermal air power providing a reduced air temperature.
Nach einem zweiten Aspekt der hier vorliegenden Erfindung wird dieses Problem durch ein Verfahren gemäß Anspruch 9 gelöst. Hiernach wird nach Start der Druckmaschine oder nach Beseitigung einer relativ lange anliegenden Störung oder Unterbrechung des Druckbetriebs die Trocknereinrichtung vor Aufnahme des Druckbetriebs aufgeheizt, nämlich derart, dass bei ausgeschalteter Wärmestrahlereinrichtung die Thermolufteinrichtung solange mit maximaler Thermoluftleistung jedoch mit einem gegenüber dem Druckbetrieb verringerten Zuluftvolumenstrom und einem gegenüber dem Druckbetrieb verringerten Abluftvolumenstrom betrieben wird, bis die Lufttemperatur einen definierten Wert erreicht.According to a second aspect of the present invention, this problem is solved by a method according to claim 9. After that, after the start of the Printing press or after elimination of a relatively long applied fault or interruption of the printing operation, the dryer device heated up before recording the printing operation, namely such that when the heat radiating device, the thermal air supply as long as with maximum thermal air power but operated with respect to the pressure reduced supply air flow and a reduced pressure compared to the exhaust air volume flow until the air temperature reaches a defined value.
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:
- Fig. 1:
- ein Signalflussdiagramm zur Verdeutlichung des erfindungsgemäßen Verfahrens zum Betreiben einer Trocknereinrichtung einer Druckmaschine.
- Fig. 1:
- a signal flow diagram to illustrate the inventive method for operating a dryer device of a printing press.
Die Erfindung betrifft ein Verfahren zum Betreiben einer Trocknereinrichtung einer Druckmaschine, vorzugsweise einer Bogendruckmaschine, die mehrere Druckwerke und/oder Lackwerke umfasst.The invention relates to a method for operating a dryer device of a printing machine, preferably a sheet-fed press, which comprises a plurality of printing units and / or coating units.
Die im Sinne des erfindungsgemäßen Verfahrens zu betreibende Trocknereinrichtung umfasst mindestens eine Wärmestrahlereinrichtung und mindestens eine Thermolufteinrichtung, wobei mit Hilfe der Wärmestrahlereinrichtung auf die Druckbogen Wärmestrahlung und mit Hilfe der Thermolufteinrichtung auf die Druckbogen ein temperierter Luftstrahl gerichtet werden kann. Wärmestrahlereinrichtung und Thermolufteinrichtung sind dabei in Transportrichtung der Druckbogen gesehen hintereinander angeordnet.The drying device to be operated in the context of the method according to the invention comprises at least one heat radiating device and at least one thermal air device, wherein a tempered air jet can be directed onto the printed sheets by means of the heat radiating device on the printed sheets heat radiation and with the aid of the thermal air device. The heat radiating device and the thermal air device are arranged one behind the other in the transport direction of the printed sheet.
Im regulären Druckbetrieb der Bogendruckmaschine und damit im regulären Trocknungsbetrieb der Trocknereinrichtung wird die Wärmestrahlereinrichtung der Trocknereinrichtung mit einer definierten Wärmestrahlerleistung betrieben.In regular printing operation of the sheet-fed printing press and thus in the regular drying operation of the drying device, the heat radiating device of the drying device is operated with a defined heat radiator output.
Die Thermolufteinrichtung der Trocknereinrichtung wird im regulären Druckbetrieb der Druckmaschine und damit im regulären Trocknungsbetrieb der Trocknereinrichtung mit einem definierten Zuluftvolumenstrom, einem definierten Abluftvolumenstrom und einer eine definierte Lufttemperatur bereitstellenden Thermoluftleistung betrieben.The thermal air device of the drying device is operated in the regular printing operation of the printing press and thus in the regular drying operation of the dryer device with a defined supply air volume flow, a defined exhaust air volume flow and a defined air temperature providing thermal air.
Die hier vorliegende Erfindung betrifft nun solche Details des Betriebs einer Trocknereinrichtung, mit Hilfe derer bei Auftreten von Störungen bzw. Unterbrechungen im Druckbetrieb bzw. bei Aufnahme des Druckbetriebs die Trocknereinrichtung derart betrieben werden kann, dass eine optimale Trocknung der Druckbogen erzielt und das Drucken von Makulatur vermieden werden kann.The present invention now relates to such details of the operation of a drying device, by means of which the dryer device can be operated in such a way that optimum drying of the printed sheets achieved and the printing of waste paper at the occurrence of disturbances or interruptions in printing operation or when recording the printing operation can be avoided.
Im Signalflussdiagramm der Fig. 1 wird der reguläre Druckbetrieb der Druckmaschine und damit der reguläre Trocknungsbetrieb der Trocknereinrichtung, in welchem die Wärmestrahlereinrichtung mit der definierten Wärmestrahlerleistung und die Thermolufteinrichtung mit dem definierten Zuluftvolumenstrom, dem definierten Abluftvolumenstrom und der die definierte Lufttemperatur bereitstellenden Thermoluftleistung betrieben wird, durch den Schritt 10 dargestellt.In the signal flow diagram of FIG. 1, the regular printing operation of the printing press and thus the regular drying operation of the dryer device, in which the heat radiator device with the defined radiant heat output and the thermo-ventilation device is operated with the defined supply air volume flow, the defined exhaust air volume flow and the thermal air power providing the defined air temperature the step 10 shown.
Gemäß einem Schritt 11 wird fortlaufend überprüft, ob während des regulären Druckbetriebs eine Störung oder eine Unterbrechung des Druckbetriebs auftritt. Wird hierbei festgestellt, dass keine Störung oder keine Unterbrechung des Druckbetriebs vorliegt, so wird auf Schritt 10 zurückverzweigt. Wird hingegen in Schritt 10 festgestellt, dass eine Störung oder Unterbrechung des Druckbetriebs vorliegt, so wird auf Schritt 12 verzweigt.According to a
In Schritt 12 wird unmittelbar anschließend an das Auftreten der Störung bzw. Unterbrechung des Druckbetriebs die Wärmestrahlereinrichtung mit verringerter Wärmestrahlerleistung betrieben, insbesondere wird unmittelbar nach Auftreten der Störung bzw. Unterbrechung des Druckbetriebs die Wärmestrahlereinrichtung abgeschaltet. Die Betriebsparameter der Thermolufteinrichtung bleiben zunächst unverändert.In step 12, immediately after the occurrence of the disturbance or interruption of the printing operation, the heat radiating device is operated with reduced heat radiating power, in particular immediately after the occurrence of the disturbance or interruption of the printing operation, the heat radiating device off. The operating parameters of the thermal air device initially remain unchanged.
Anschließend an Schritt 12 wird in einem Schritt 13 überprüft, ob die Störung oder Unterbrechung des Druckbetriebs beseitigt wird. Wird hierbei festgestellt, dass die Störung bzw. Unterbrechung beseitigt wurde, so wird ausgehend von Schritt 13 auf Schritt 10 zurückverzweigt und der Druckbetrieb und damit der Trocknungsbetrieb wieder aufgenommen, wobei hierzu die Wärmestrahlereinrichtung mit der für den regulären Druckbetrieb und damit den regulären Trocknungsbetrieb definierten Wärmestrahlerleistung betrieben wird.Subsequent to step 12, it is checked in a
Wird hingegen in Schritt 13 festgestellt, dass die Störung bzw. Unterbrechung des Druckbetriebs nicht beseitigt wurde, so wird in Schritt 14 überprüft, ob die Zeit nach dem Auftreten der Störung bzw. Unterbrechung des Druckbetriebs kleiner als eine vorbestimmte erste Zeitspanne ist. Ist dies der Fall, so wird von Schritt 14 auf Schritt 13 zurückverzweigt. Wird hingegen in Schritt 14 festgestellt, dass die definierte erste Zeitspanne überschritten wurde, so wird ausgehend von Schritt 14 auf Schritt 15 verzweigt.On the other hand, if it is determined in
In Schritt 15 wird unmittelbar mit Ablauf der ersten Zeitspanne die Thermolufteinrichtung der Trocknereinrichtung mit einem verringerten Zuluftvolumenstrom, einem verringerten Abluftvolumenstrom und einer eine verringerte Lufttemperatur bereitstellenden Thermoluftleistung betrieben, wobei die Wärmestrahlereinrichtung weiterhin abgeschaltet bleibt. Die verringerte Lufttemperatur, die in Schritt 15 bereitgestellt werden soll, beträgt insbesondere 80% der für den regulären Druckbetrieb definierten Lufttemperatur. Dieser Wert von 80% ist jedoch rein exemplarisch und kann verfahrens- und bauartabhängig auch jeden anderen Wert annehmen.In step 15, immediately after the end of the first time period, the thermo-ventilation device of the dryer device is operated with a reduced supply air volume flow, a reduced exhaust air volume flow and a thermal air power providing a reduced air temperature, wherein the heat radiator device remains switched off. The reduced air temperature to be provided in step 15 is in particular 80% of the air temperature defined for the regular pressure operation. However, this value of 80% is purely exemplary and, depending on the method and design, can also assume any other value.
Wird demnach innerhalb der ersten Zeitspanne die Störung bzw. Unterbrechung des Druckbetriebs nicht behoben und der Druckbetrieb nicht wieder aufgenommen, so wird die Thermoluftleistung der Thermolufteinrichtung reduziert, so dass von der Thermoluft beaufschlagte Baugruppen der Druckmaschine bzw. Trocknereinrichtung nicht beschädigt werden.Accordingly, if the malfunction or interruption of the printing operation is not remedied within the first period of time and the printing operation is not resumed, the thermal air output of the thermal-air device is reduced, so that are not damaged by the thermal air acted assemblies of the printing press or dryer device.
Anschließend an Schritt 15 wird gemäß Schritt 16 überprüft, ob anschließend an den Ablauf der ersten Zeitspanne die Störung oder Unterbrechung des Druckbetriebs beseitigt wird. Ist dies der Fall, so wird ausgehend von Schritt 16 auf Schritt, 10 verzweigt, d. h. der Druckbetrieb der Druckmaschine sowie der Trocknungsbetrieb der Trocknereinrichtung wird wieder aufgenommen, wobei hierzu die Thermolufteinrichtung der Trocknereinrichtung mit dem für den regulären Druckbetrieb bzw. regulären Trocknungsbetrieb definierten Zuluftvolumenstrom, mit dem für den Druckbetrieb und damit Trocknungsbetrieb definierten Abluftvolumenstrom und mit einer die für den Druckbetrieb und damit Trocknungsbetrieb definierte Lufttemperatur bereitstellenden Thermoluftleistung betrieben wird.Subsequent to step 15, it is checked in
Wird hingegen in Schritt 16 festgestellt, dass die Störung oder Unterbrechung des Druckbetriebs nicht beseitigt wird, so wird auf Schritt 17 verzweigt, wobei in Schritt 17 überprüft wird, ob eine sich an die erste Zeitspanne anschließende zweite Zeitspanne überschritten wird. Wird dabei in Schritt 17 festgestellt, dass die zweite Zeitspanne noch nicht überschritten ist, so wird auf Schritt 16 zurückverzweigt. Wird hingegen in Schritt 17 festgestellt, dass die zweite Zeitspanne überschritten wurde, dass also weder innerhalb der ersten Zeitspanne noch innerhalb der zweiten Zeitspanne die Störung bzw. Unterbrechung des Druckbetriebs beseitigt wurde, so wird auf Schritt 18 verzweigt.If, on the other hand, it is determined in
In Schritt 18 wird dann die Trocknereinrichtung in einen Standby-Modus überführt, wobei im Standby-Modus die Wärmestrahlereinrichtung abgeschaltet ist und die Thermolufteinrichtung mit minimierter Thermoluftleistung betrieben wird.In step 18, the drying device is then transferred to a standby mode, wherein in the standby mode, the heat radiating device is switched off and the thermal air device is operated with minimized thermal air power.
Nach Überführung der Trocknereinrichtung in den Standby-Modus gemäß Schritt 18 wird in Schritt 19 überprüft, ob im Standby-Modus die Störung oder Unterbrechung des Druckbetriebs beseitigt wird, wobei dann, wenn hierbei festgestellt wird, dass die Störung nicht beseitigt wird, auf Schritt 19 zurückverzweigt wird. Wird hingegen in Schritt 19 festgestellt, dass innerhalb des Standby-Modus die Störung oder die Unterbrechung des Druckbetriebs beseitigt wird, so wird ausgehend von Schritt 19 auf Schritt 20 verzweigt und ein Vorheizen der Trocknereinrichtung durchgeführt.After the drier has been transferred to the standby mode in step 18, it is checked in
Beim Vorheizen der Trocknereinrichtung im Sinne des Schritts 20 wird die Thermolufteinrichtung bei ausgeschalteter Wärmestrahlereinrichtung solange mit maximaler Thermoluftleistung, jedoch mit gegenüber dem regulären Duckbetrieb der Druckmaschine und damit dem regulären Trocknungsbetrieb der Trocknereinrichtung verringertem Zuluftvolumenstrom und verringertem Abluftvolumenstrom betrieben, bis die Lufttemperatur einen definierten Wert erreicht hat. Erst dann, wenn die Lufttemperatur in Schritt 20 diesen definierten Wert erreicht hat, wird auf Schritt 10 zurückverzweigt und der reguläre Druckbetrieb und damit der reguläre Trocknungsbetrieb wieder aufgenommen.When preheating the dryer device in the sense of step 20, the thermal air device is operated with the heat radiating device off with maximum thermal air power, but with respect to the regular Duckbetrieb the printing press and thus the regular drying operation of the dryer reduced supply air volume flow and reduced exhaust air volume flow until the air temperature has reached a defined value , Only then, when the air temperature has reached this defined value in step 20, is branched back to step 10 and resumed the regular printing operation and thus the regular drying operation.
Dieser definierte Wert der Lufttemperatur, der beim Vorheizen in Schritt 20 erreicht werden soll, beträgt insbesondere 80% der für den regulären Druckbetrieb definierten Lufttemperatur. Dieser Wert von 80% ist wiederum rein exemplarisch und kann verfahrens- und bauartabhängig auch jeden anderen Wert annehmen.This defined value of the air temperature, which is to be achieved during preheating in step 20, is in particular 80% of the air temperature defined for the regular pressure operation. This value of 80% is again purely exemplary and, depending on the method and design, can also assume any other value.
Mit Aufnahme des regulären Druckbetriebs und damit des regulären Trocknungsbetriebs wird die Thermolufteinrichtung mit dem für den regulären Druckbetrieb definierten Zuluftvolumenstrom, mit dem für den regulären Druckbetrieb definierten Abluftvolumenstrom und mit einer die für den regulären Druckbetrieb definierten Lufttemperatur bereitgestellten Thermoluftleistung betrieben.Upon receipt of the regular printing operation and thus of the regular drying operation, the thermal air device is operated with the supply air volume flow defined for the regular pressure operation, with the exhaust air volume flow defined for the regular pressure operation and with the thermal air power provided for the air temperature defined for the regular pressure operation.
Ebenso wird dann die Wärmestrahlereinrichtung der Trocknereinrichtung mit der für den regulären Druckbetrieb definierten Wärmestrahlerleistung betrieben.Likewise, the heat radiating device of the drying device is then operated with the heat radiator power defined for the regular printing operation.
Das Verfahren gemäß Fig. 1 unterscheidet demnach bei Auftreten einer Störung bzw. Unterbrechung im Druckbetrieb zwischen drei Phasen. Eine erste Phase, die sich unmittelbar an das Auftreten der Unterbrechung bzw. Störung anschließt, wird durch die erste Zeitspanne definiert, wobei innerhalb der ersten Zeitspanne lediglich die Betriebsparameter der Wärmestrahlereinrichtung angepasst werden, jedoch die Betriebsparameter der Thermolufteinrichtung unverändert bleiben. Wird innerhalb dieser ersten Phase der Druckbetrieb nicht wieder aufgenommen, so werden innerhalb einer zweiten Phase, die durch die zweite Zeitspanne definiert ist, die Betriebsparameter der Thermolufteinrichtung derart angepasst, dass bei verringertem Zuluftvolumenstrom und bei verringertem Abluftvolumenstrom eine verringerte Lufttemperatur bereitgestellt wird, die insbesondere 80% der Lufttemperatur des regulären Druckbetriebs entspricht.Accordingly, the method according to FIG. 1 distinguishes between three phases when a fault or interruption occurs in the printing operation. A first phase, which immediately follows the occurrence of the interruption or disturbance, is defined by the first time period, wherein within the first time period only the operating parameters of the heat radiating device are adjusted, but the operating parameters of the thermal air device remain unchanged. If the printing operation is not resumed within this first phase, then within a second phase, which is defined by the second time period, the operating parameters of the thermo-ventilation device are adapted such that a reduced air temperature is provided at reduced supply air volume flow and reduced exhaust air volume flow, which in particular 80 % of the air temperature of the regular printing operation.
Wird auch innerhalb dieser zweiten Zeitspanne und damit der zweiten Phase der Druckbetrieb nicht wieder aufgenommen, so schließt sich die dritte Phase an, innerhalb derer die Thermolufteinrichtung im Standby-Modus betrieben wird. Innerhalb des Standby-Modus kühlt die Druckmaschine soweit aus, dass dann, wenn im Standby-Modus die Störung des Druckbetriebs bzw. Unterbrechung desselben beseitigt wird, vor Aufnahme des Druckbetriebs zuerst ein Vorheizen der Druckmaschine bzw. Trocknereinrichtung erfolgen muss. Beim Vorheizen wird die Thermolufteinrichtung mit verringertem Zuluftvolumenstrom und verringertem Abluftvolumenstrom betrieben, und zwar derart, dass die Lufttemperatur einen definierten Wert erreicht, der insbesondere 80% der Lufttemperatur der Thermoluft im regulären Druckbetrieb bzw. Trocknungsbetrieb entspricht. Dieser Wert von 80% ist wiederum rein exemplarisch und kann verfahrens- und bauartabhängig auch jeden anderen Wert annehmen.If the printing operation is not resumed within this second period of time and thus the second phase, then the third phase follows, within which the thermal air device is operated in standby mode. Within the standby mode, the press cools down to such an extent that, when in standby mode, the disturbance of the printing operation or interruption thereof is eliminated, it is necessary to preheat the printing press or dryer device before starting the printing operation. During preheating, the thermo-ventilation device is operated with a reduced supply air volume flow and reduced exhaust air volume flow, in such a way that the air temperature reaches a defined value, which corresponds in particular to 80% of the air temperature of the thermo-air in the regular pressure operation or drying operation. This value of 80% is again purely exemplary and, depending on the method and design, can also assume any other value.
Die obige Vorheizfunktion des erfindungsgemäßen Verfahrens kann nicht nur bei Wiederaufnahme des Druckbetriebs aus dem Standby-Modus heraus durchgeführt werden, vielmehr kann ein derartiges Vorheizen auch dann erfolgen, wenn eine Druckmaschine neu gestartet wird.The above preheating function of the method according to the invention can be carried out not only when the printing operation resumes from the standby mode, but such preheating can also take place when a printing press is restarted.
Mit Hilfe des erfindungsgemäßen Verfahrens kann effektiv verhindert werden, dass beim Starten der Druckmaschine sowie nach Beseitigung einer relativ langen Störung bzw. Unterbrechung des Druckbetriebs Makulatur gedruckt wird, indem vor der Aufnahme des eigentlichen Druckbetriebs ein Vorheizen der Druckmaschine bzw. Trocknereinrichtung erfolgt. Weiterhin werden bei Auftreten einer Unterbrechung bzw. Störung des Druckbetriebs Betriebsparameter der Trocknereinrichtung sukzessiv angepasst, um einerseits bei Vorliegen kurzer Störungen unmittelbar den Druckbetrieb wiederaufnehmen zu können, und um andererseits bei Vorliegen langer Störungen ein Überhitzen der Druckmaschine bzw. Trocknereinrichtung zu vermeiden. Mit dem erfindungsgemäßen Verfahren kann Energie eingespart werden.With the aid of the method according to the invention, it is possible to effectively prevent waste from being printed on starting the printing press and after eliminating a relatively long interruption or interruption of the printing operation by Preheating of the printing press or dryer device takes place before recording the actual printing operation. Furthermore, when an interruption or malfunction of the printing operation occurs, the operating parameters of the drying device are successively adapted to be able to resume printing operation immediately in the presence of short disturbances, and to avoid overheating of the printing press or dryer device on the other hand in the presence of long faults. Energy can be saved with the method according to the invention.
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Claims (10)
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DE200610043055 DE102006043055B4 (en) | 2006-09-14 | 2006-09-14 | Method for operating a dryer device of a printing machine |
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EP1900523A2 true EP1900523A2 (en) | 2008-03-19 |
EP1900523A3 EP1900523A3 (en) | 2009-12-23 |
EP1900523B1 EP1900523B1 (en) | 2014-04-09 |
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EP20070017359 Not-in-force EP1900523B1 (en) | 2006-09-14 | 2007-09-05 | Method for operating a drying unit of a printing press |
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EP (1) | EP1900523B1 (en) |
JP (1) | JP2008070108A (en) |
DE (1) | DE102006043055B4 (en) |
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DE102008000712A1 (en) * | 2008-03-17 | 2009-09-24 | Manroland Ag | Drying device operating method for sheet printing machine, involves supplying thermal air such that each thermal air supply is intermitted in direction of drying module within seconds by mobile sliding device during occurrence of stopper |
DE102008000978A1 (en) * | 2008-04-03 | 2009-10-08 | Manroland Ag | Printing machine i.e. sheet-fed printing machine, operating method, involves directing thermal air to printed substrate, controlling air flow rate and heating power and sucking air by sheet path blower |
JP5703658B2 (en) * | 2010-09-27 | 2015-04-22 | 大日本印刷株式会社 | Supply air fan speed control system, supply air fan speed control method, gravure printing machine |
US20230143349A1 (en) * | 2020-11-27 | 2023-05-11 | Lg Energy Solution, Ltd. | Electrode Drying System and Electrode Drying Method |
CN112644166A (en) * | 2020-12-31 | 2021-04-13 | 南通市天赫软件科技有限公司 | Printing quality management method and device |
Citations (3)
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EP1142711A1 (en) * | 2000-04-07 | 2001-10-10 | MAN Roland Druckmaschinen AG | Dryer controlling device in a printing machine |
EP1403046A2 (en) * | 2002-09-27 | 2004-03-31 | MAN Roland Druckmaschinen AG | Drying device for a printing machine |
DE4309266B4 (en) * | 1993-03-23 | 2004-06-09 | Heidelberger Druckmaschinen Ag | Method for controlling the activation of the paper path of a printing press |
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DE10154416B4 (en) * | 2001-11-06 | 2009-09-03 | Koenig & Bauer Aktiengesellschaft | Device for treating printed on both sides and / or painted sheet |
-
2006
- 2006-09-14 DE DE200610043055 patent/DE102006043055B4/en not_active Expired - Fee Related
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2007
- 2007-09-05 EP EP20070017359 patent/EP1900523B1/en not_active Not-in-force
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DE4309266B4 (en) * | 1993-03-23 | 2004-06-09 | Heidelberger Druckmaschinen Ag | Method for controlling the activation of the paper path of a printing press |
EP1142711A1 (en) * | 2000-04-07 | 2001-10-10 | MAN Roland Druckmaschinen AG | Dryer controlling device in a printing machine |
EP1403046A2 (en) * | 2002-09-27 | 2004-03-31 | MAN Roland Druckmaschinen AG | Drying device for a printing machine |
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JP2008070108A (en) | 2008-03-27 |
DE102006043055A1 (en) | 2008-03-27 |
DE102006043055B4 (en) | 2014-07-17 |
EP1900523B1 (en) | 2014-04-09 |
EP1900523A3 (en) | 2009-12-23 |
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