EP3643507B1 - Printing device and method for printing a sheet-like substrate - Google Patents

Printing device and method for printing a sheet-like substrate Download PDF

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Publication number
EP3643507B1
EP3643507B1 EP19202664.9A EP19202664A EP3643507B1 EP 3643507 B1 EP3643507 B1 EP 3643507B1 EP 19202664 A EP19202664 A EP 19202664A EP 3643507 B1 EP3643507 B1 EP 3643507B1
Authority
EP
European Patent Office
Prior art keywords
drum
substrate
sheet
printing
gripper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19202664.9A
Other languages
German (de)
French (fr)
Other versions
EP3643507A1 (en
Inventor
Stefan Tschorn
Matthias Amrein
Daniel Koster
Alexander GÖDECKE
Nina Baier
Michael Gardon
Josef Kirschbauer
James Zerbel
Franziska Peinze
Arthur Mathea
Alexander MOMBRÉE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Publication of EP3643507A1 publication Critical patent/EP3643507A1/en
Application granted granted Critical
Publication of EP3643507B1 publication Critical patent/EP3643507B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/22—Clamps or grippers
    • B41J13/223—Clamps or grippers on rotatable drums
    • B41J13/226—Clamps or grippers on rotatable drums using suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/22—Clamps or grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/60—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on both faces of the printing material

Definitions

  • the invention relates to a printing device for printing on a sheet-like substrate, with a drum that can be driven in rotation about a longitudinal axis of the drum, in particular continuously or clocked, on the outer surface of which at least one sheet-like substrate can be at least partially fixed by means of at least one gripper for fixing the sheet-like substrate to a first substrate area and by means of a suction air provided by a suction air area of the drum for fixing the arch-shaped substrate to a second substrate area, as well as with a printing device arranged radially with respect to the drum, in particular an inkjet printing device.
  • the invention also relates to a method for printing a sheet-like substrate with such a printing device.
  • Such a printing device is used, for example, in the production of an identity document, document of value or security document, in particular in the production of passports.
  • Passports comprise a cover and a passport book block that are glued and folded together.
  • the passport book block is made from a sheet, in particular a sheet of paper, from which copies are separated after printing.
  • a sheet can thus contain a large number of panels, it being possible for only individual panels of the sheet to be personalized and / or printed.
  • personalized data or information such as place of residence, size, eye color or the name of the order or artist are printed on (paper) page one under numbers 11 to 14.
  • the passport book pages or visa pages of the visa sheet remain largely print-free and only individual passport book pages are provided with a personalized or individualized print, an inkjet printing device preferably being used for this purpose.
  • a printing device of the type mentioned is, for example, from EP 2 657 035 A1 known, which provides a drum for the transport of a sheet-shaped substrate on which the substrate can be fixed both by means of grippers and by means of suction air on the outer surface of the drum before it is printed with the inkjet printer.
  • drums for the transport of a sheet substrate are in the EP 3 016 365 A1 , the US 2009/0 051 747 A1 and the DE 10 2016 207 398 B3 described.
  • the drums only use either mechanical gripping elements or only suction air to fix the sheet-like substrate on the drum.
  • a printing device that has proven itself for the purposes of producing identity documents, value documents or security documents is in the DE 10 2016 221 192 A1 described by the applicant, which makes it possible to print a sheet-shaped substrate on both sides. After the first side of the substrate has been printed, the sheet-shaped substrate is turned by means of deflection rollers before it is also printed on the second side of the substrate.
  • the US 2009/0 035 046 A1 deals with a drum for carrying a substrate sheet, the drum providing a suction air area on its outer surface, which is supplemented by grippers.
  • a printing device that includes a conveyor that holds and conveys a plurality of media, each at different holding areas.
  • an image forming section is provided for printing images on the surfaces of the media, and a control device which is set so that the media at a predetermined Holding area are transported without using all holding areas of the conveyor.
  • DE 103 12 870 A1 describes a digital printing machine. This comprises a digital printing unit and a downstream intermediate cylinder which is coated with an elastic material, as well as an impression cylinder, this having sheet-holding grippers. Furthermore, the impression cylinder has recesses that receive grippers.
  • a two-sided ink jet printer composed of a paper feeding unit, a printing unit and a paper collecting unit.
  • the paper transport unit consists of a plurality of paper transport rollers and which serve to transfer the paper printed on the front sides to the back side printing roller in order to be able to print the back side.
  • the US 2011/0 025 807 A1 describes a drum that is used in a printing machine.
  • This drum is used to fix a substrate to be printed, it has both gripper fingers for mechanical fixation of the substrate and a suction air area for fixation of the substrate by means of a negative pressure.
  • the purpose of this configuration is to ensure that the paper does not "stand up" when the substrate is mechanically gripped at the front end.
  • a further object of the present invention is to specify a method for printing a sheet-like substrate with such a printing device.
  • the pressure device is particularly characterized in that the at least one gripper is attached to a fastening rod that runs parallel to the longitudinal axis of the drum and that is adjustable by means of a lever that can be actuated by pressure medium between a first pivot position, in which the at least one gripper is in an open position, and a second Pivoting position in which the at least one gripper is in a closed position.
  • a second printing device in particular a second inkjet printing device, arranged radially with respect to the second drum is present.
  • the at least one gripper of the fastening rod of the first drum is arranged offset with respect to the at least one gripper of the fastening rod of the second drum.
  • a plurality of grippers is arranged on the fastening rod of the first drum, and that a plurality of grippers is arranged on the fastening rod of the second drum.
  • the grippers of the first drum and the grippers of the second drum are preferably aligned with one another in a comb-like manner, in particular in the transfer gap. This ensures that the moving parts of the first drum do not collide with those of the second drum.
  • the suction air area is only arranged in areas on the outer surface of the drum at a predetermined distance from the at least one gripper.
  • a fixation-free jacket area arises on the jacket surface between the gripper and the suction air area, so that the curved substrate can be fixed to the drum without distortion, in particular at its front edge by means of the gripper and at its rear edge by means of the suction air.
  • the invention provides that the fastening rod is rotatably mounted on a swivel bracket, which is adjustable between a raised position, in which the fastening rod protrudes over the outer surface of the drum, and a lowered position, in which the fastening rod is arranged at least flat to the outer surface of the drum.
  • the swivel bracket can be adjusted, for example, by means of an electric servomotor. Alternatively, the adjustment can be operated by pressure medium, in particular pneumatically or hydraulically.
  • the adjustment of the at least one swivel bracket can be an alternative or a supplement be carried out gravity driven. This means that the swivel bracket is brought into the raised position when it is located opposite a sheet feeder located below the drum, so it is pivoted out of the outer surface of the drum due to gravity and thus protrudes beyond the outer surface.
  • the swivel mount is assigned a roller which is designed to interact with a control cam or a run-up or a guide bar in such a way that the swivel mount, in particular at predetermined angular positions of the drum, between its raised position and their recessed position is adjusted.
  • the roller can be used to roll along a surface of the sheet feeder or a part of a machine frame, whereby the swivel bracket is folded in again and transferred into its lowered position .
  • a kinematic reversal is possible.
  • the drum has at least one switching device which is designed to switch the suction air area only at predetermined angular positions or only within a predetermined range of angular positions of the drum between an active one to adjust a configuration providing suction power on the lateral surface, and an inactive configuration that does not provide or suppresses the suction power on the lateral surface.
  • the drum has been found to be advantageous if a sheet-shaped substrate to be printed is first fixed with the grippers attached to the fastening rod before it is subsequently sucked in in the suction air area of the drum.
  • the switching device is guided in a drum link formed in the drum, and if the switching device has a switching element which is designed to interact with a control cam or a run-up or a guide bar in such a way as to create the suction air area between the active configuration and the inactive configuration.
  • the switching element can be adjusted in the drum link, for example, by means of an electric servomotor or by means of a pressure medium, in particular pneumatically or hydraulically. It is also possible for it to be adjusted by means of gravity, so that the adjustability of the switching element can take place in a manner analogous to the adjustability of the swivel mount.
  • Safe adjustability of the fastening rod can, however, also be achieved in that the swivel bracket is present on both sides of the drum.
  • the two swivel brackets then support the fastening rod rotatably between them, so that the swivel brackets form a swivel bracket with the fastening rod.
  • the shift gate which can be provided on both sides of the drum or formed on both sides in the drum in order to guide a shift element that is provided on one side or on both sides of the drum.
  • the arcuate substrate is between the first substrate area fixed by the at least one gripper and the second substrate area fixed by the suction air area is wiped onto the outer surface of the drum by means of a wiping device, the wiping device being formed in particular as a blade, a strip, a brush strip or the like.
  • a particularly reliable removal of the arch-shaped substrate from a sheet feeder can be realized in that first the arch-shaped substrate is grasped by means of the at least one gripper, and that subsequently the suction air area from an inactive configuration, which prevents the suction power on the outer surface, into an active, one The configuration providing suction power on the lateral surface is adjusted for the temporally subsequent fixation of the second substrate region of the arch-shaped substrate.
  • the drum is rotated further after the first substrate side has been printed, and if the sheet-shaped substrate is transferred to a second drum in a transfer gap and on a second drum by means of a second printing device Substrate side is printed.
  • a printing device 200 is shown, which is used for printing a sheet-shaped substrate 300.
  • This printing device 200 is used in particular in the production of a German passport.
  • the printing device 200 comprises a first drum 202A and a second drum 202B, which can be driven continuously or clocked in opposite directions, rotating about their drum longitudinal axes 204.
  • the two drums 202A, 202B are aligned with one another in such a way that a transfer gap 216 is formed between them for transferring the arcuate substrate 300 from the first drum 202A to the second drum 202B.
  • the arcuate substrate 300 can be fixed at least in regions on the outer surfaces 206 of the drums 202A, 202B.
  • the fixation takes place on the one hand by means of a gripper 208 on a first substrate region 302 and on the other hand by means of suction air provided by a suction air region 210 of the drums 202A, 202B on a second substrate region 304.
  • the first drum 202A is assigned a first printing device 250A radially, in particular vertically above the drum 202A.
  • the first printing device 250A is formed, for example, as an inkjet printing device comprising a plurality of print heads.
  • a second printing device 250B is assigned to the second drum 202B radially, in particular vertically above the drum 202B.
  • the second printing device 250B is also, for example, one of several Formed printheads comprehensive inkjet printing device. In the present case, the two printing devices 250A, 250B are aligned parallel to one another.
  • a sheet feeder 400 is present below the first drum 202A, which sheet feeder is designed to feed the sheet-shaped substrate 300 to the first drum 202A.
  • a sheet depository 402 for depositing the sheet-like substrate 300 printed on both sides is provided below the second drum 202B.
  • the sheet feeder 400 and / or the sheet depository 402 can be designed to be height-adjustable, manually or automatically.
  • the drums 202A, 202B can be driven to rotate about their drum longitudinal axis 204, a motor 232 being provided for rotating or for driving the drums 202A, 202B.
  • a motor 232 being provided for rotating or for driving the drums 202A, 202B.
  • these are in the present case subdivided into a plurality of individual strips 234, one of the grippers 208 being assigned to each of the strips 234.
  • a section 240 of the suction air region 210 is assigned to each of the strips 234. It can also be seen that the suction air area 210 is only formed in areas on the lateral surface 206 of the drums 202A, 202B and maintains a predetermined distance from the at least one gripper 208.
  • a plurality of grippers 208 are fixed there on a fastening rod 212, the grippers 208 in particular being aligned equidistant from one another.
  • the fastening rod 212 can be pivoted about its longitudinal axis between a first pivot position and a second pivot position by means of a lever 214.
  • the lever 214 opens and closes the gripper 208 fixed on the fastening rod 212.
  • the lever 214 which can be actuated by means of a pressure medium, in particular pneumatically or hydraulically, is designed in such a way that the fastening rod 212 is between the first pivot position in which the at least a gripper 208 is in an open position, and a second pivot position, in which the at least one gripper 208 is in a closed position, adjustable.
  • the open position of the gripper 208 the arch-shaped substrate 300 are fed to the drum 202A, 202B, the grippers 208 in the closed position fixing the arcuate substrate to the jacket surface 206 of the drum 202A, 202B.
  • the adjustment unit for actuating the lever 214 has a linearly adjustable piston rod 242 which is attached to the lever 214 in a pivot-joint manner.
  • the drum 202A, 202B is designed to simultaneously fix three of the arcuate substrates 300 on their outer surface 206 and to transport them. Another number is possible, wherein the diameter of the drum 202A, 202B and the number of fastening rods 212 with grippers 208 can be adapted accordingly. In any case, a plurality of fastening rods 212 with grippers 208 distributed over the circumference of the drum 202A, 202B and a number of suction air areas 210 corresponding to the number of fastening rods 212 can be present.
  • the fastening rod 212 is rotatably mounted on a pivot bracket 218 in the present case.
  • a pivot bracket 218 for each of the arcuate substrates 300 to be transported, there are two swivel mounts 218, which are mounted on both sides of the drum 202A, 202B.
  • a first swivel mount 218 is arranged on the first end face of the drum 202A, 202B and a second swivel mount 218 is arranged on the second end face of the drum 202A, 202B for each arcuate substrate to be processed, so that they form a swivel bracket with the fastening rod 212 .
  • first pivot bracket 218 is arranged with respect to the drum longitudinal axis 204 in front of the lateral surface 206 and the second pivot bracket 218 with respect to the drum longitudinal axis 204 after the lateral surface 206 of the drum 202A, 202B.
  • This swivel bracket 218 is adjustable between a raised position in which the fastening rod 212 protrudes over the jacket surface 206 of the drum 202A, 202B (e.g. swivel bracket 218 in the picture below) and a recessed position in which the fastening rod 212 is at least flat to the jacket surface 206 the drum 202A, 202B is arranged (e.g. Swivel brackets 218 in the picture on the left and right above).
  • the swivel bracket 218 can also be brought into the raised position by gravity.
  • the swivel bracket 218 can also be adjusted by means of an electric servomotor. Alternatively, the swivel bracket 218 can be adjusted by means of pressure medium, in particular pneumatically or hydraulically.
  • the pivot bracket 218 is guided in a guide groove 244 of the drum 202A, 202B and movable between two stops, the guide groove 244 extending tangentially with respect to the jacket surface 206 or along a secant of the circle described by the jacket surface 206.
  • the swivel bracket 218 is also assigned a roller 222 which is designed to interact with a control cam or a run-up or a guide bar, for example a guide bar of a machine frame, in such a way that the swivel bracket 218 is brought back into the guide recess 246 and thus back into its lowered position will. It is also possible that there is a kinematic reversal, after which the roller 222 is used to disengage the swivel mount 218 from the guide recess 246 and to transfer it into the raised position.
  • the drum 202A, 202B has at least one switching device 220, which is designed to operate the suction air area 210 only at predetermined angular positions or only within a predetermined range of angular positions of the drum 202A, 202B between an active, one suction power on the lateral surface 206 providing configuration and an inactive configuration preventing the suction power on the lateral surface 206.
  • the switching device 220 is preferably guided in a drum link 226, the switching device 220 being assigned a switching element 224 which is configured with a control cam or a run-up or a guide bar, for example a guide bar Machine frame to interact in such a way as to adjust the suction air area 210 between the active configuration and the inactive configuration.
  • the switching device 220 can be adjusted, for example, by means of an electric servomotor.
  • the switching device 220 can be adjusted by means of a pressure medium, in particular pneumatically or hydraulically.
  • the switching device 220 can be driven by gravity, the switching element 224 activating the switching device 220 when it interacts with the control cam, the run-up or a guide bar.
  • the reverse possibility (kinematic reversal) is opened up, so that the switching element 224, under the influence of gravity, converts the switching device 220 into the inactive configuration.
  • FIG. 3 and 4th it can also be seen that the section of the drum 202A, 202B on which the grippers 208 fix the first substrate area 302 is free of suction holes or suction air areas.
  • the suction air region 210 is designed to fix the substrate 300 in its second substrate region 304, which is spaced apart from the first substrate region 302.
  • the fastening rod 212 comprises a recess which is provided with a thread in order to fix the gripper 208 to the fastening rod 212 by means of at least one, in the present case exactly three screws. A different number of screws is possible.
  • a different fixing for the gripper 208 is possible, which can be formed, for example, with rivets, nails or other clamping elements for clamping a gripper end.
  • This figure also shows the shape of the grippers 208, which comprise a retaining tab 248 at their free end, ie at their end not arranged on the fastening rod 212.
  • the holding tab 248 is that part of the gripper 208 which fixes the arcuate substrate 300 in its first substrate region 302.
  • the transfer gap 216 is shown in a detailed section, wherein the gripper 208 of the second drum 202B is in the open position, and wherein the gripper 208 of the first drum 202A is in the closed position.
  • the Different pivot positions of the two fastening rods 212 shown can be recognized from the fact that the two piston rods 242 are visible with different lengths, and that there are also different pivot positions for the two levers 214.
  • the grippers 208 on the fastening rods 212 are offset from one another, the grippers 208 of the first drum 202A in particular in a comb-like manner with the grippers 208 of the second drum 202B interlock.
  • the sheet-shaped substrate 300 is provided by means of the sheet feeder 400, the first drum 202A being rotated counterclockwise about its drum longitudinal axis 204 and the fastening rod 212 of the first drum 202A being swiveled into its first swivel position, whereby the grippers 208 of the first drum 202A are swiveled into the Open position will be transferred.
  • the arch-shaped substrate 300 is gripped on a first substrate region 302 by means of the grippers 208 when the fastening rod 212 is pivoted into the second pivot position, whereby the grippers 208 are thus transferred into the closed position.
  • the drum 202A is rotated further and the arcuate substrate 300 is brushed onto the lateral surface 206 by means of a wiping device 230, in particular a brush strip.
  • the second substrate region 304 of the substrate 300 is fixed to the jacket surface 206 of the drum 202A by means of the suction air provided by the suction air region 210.
  • the substrate 300 is transported to the first printing device 250A, where it is printed on its first substrate side.
  • the one-sided printed substrate 300 is then transported on until the first substrate area 302 has arrived in the transfer gap 216, where the grippers 208 of the second drum 202B take over the sheet-shaped substrate 300 and the grippers 208 of the first drum 202A are transferred to the open position to release the substrate .
  • the arcuate substrate 300 is slipped onto the lateral surface 206 by means of a wiping device 230, in particular with a brush strip, until it is subsequently fixed in the suction air area 210 of the second drum 202B by means of suction air.
  • the second drum 202B is then rotated further and the sheet-shaped substrate 300 is printed on its second substrate side with the second printing device 250B before it is deposited on the sheet depository 402 for further processing.

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  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Description

Die Erfindung betrifft eine Druckvorrichtung zum Bedrucken eines bogenförmigen Substrats, mit einer um eine Trommellängsachse, insbesondere kontinuierlich oder getaktet, rotierend antreibbaren Trommel, an deren Mantelfläche mindestens ein bogenförmiges Substrat zumindest bereichsweise fixierbar ist mittels mindestens einem Greifer zur Fixierung des bogenförmigen Substrats an einem ersten Substratbereich und mittels einer durch einen Saugluftbereich der Trommel bereitgestellten Saugluft zur Fixierung des bogenförmigen Substrats an einem zweiten Substratbereich, sowie mit einer radial bezüglich der Trommel angeordneten Druckeinrichtung, insbesondere einer Inkjet-Druckeinrichtung. Die Erfindung betrifft außerdem ein Verfahren zum Bedrucken eines bogenförmigen Substrats mit einer solchen Druckvorrichtung.The invention relates to a printing device for printing on a sheet-like substrate, with a drum that can be driven in rotation about a longitudinal axis of the drum, in particular continuously or clocked, on the outer surface of which at least one sheet-like substrate can be at least partially fixed by means of at least one gripper for fixing the sheet-like substrate to a first substrate area and by means of a suction air provided by a suction air area of the drum for fixing the arch-shaped substrate to a second substrate area, as well as with a printing device arranged radially with respect to the drum, in particular an inkjet printing device. The invention also relates to a method for printing a sheet-like substrate with such a printing device.

Eine derartige Druckvorrichtung wird beispielweise eingesetzt bei der Herstellung eines Ausweis-, Wert- oder Sicherheitsdokuments, insbesondere bei der Herstellung von Reisepässen. Reisepässe umfassen einen Einband und einen Passbuchblock, die miteinander verklebt und gefaltet sind. Der Passbuchblock wird aus einem Bogen, insbesondere einem Papierbogen hergestellt, aus dem nach dem Bedrucken Nutzen vereinzelt werden. Ein Bogen kann dabei also eine Vielzahl von Nutzen enthalten, wobei es möglich ist, dass nur einzelne Nutzen des Bogens individualisiert und/oder personalisiert bedruckt sind. Beim Beispiel des deutschen Reisepasses sind auf (Papier-)Seite eins unter den Ziffern 11 bis 14 personalisierte Daten oder Informationen eingedruckt wie Wohnort, Größe, Augenfarbe bzw. Ordens- oder Künstlername. Die Passbuchseiten oder Visaseiten des Visabogens bleiben weitestgehend druckfrei und nur einzelne Passbuchseiten werden mit einem personalisierten oder individualisierten Druck versehen, wobei hierzu vorzugsweise eine Inkjet-Druckeinrichtung eingesetzt wird.Such a printing device is used, for example, in the production of an identity document, document of value or security document, in particular in the production of passports. Passports comprise a cover and a passport book block that are glued and folded together. The passport book block is made from a sheet, in particular a sheet of paper, from which copies are separated after printing. A sheet can thus contain a large number of panels, it being possible for only individual panels of the sheet to be personalized and / or printed. In the example of the German passport, personalized data or information such as place of residence, size, eye color or the name of the order or artist are printed on (paper) page one under numbers 11 to 14. The passport book pages or visa pages of the visa sheet remain largely print-free and only individual passport book pages are provided with a personalized or individualized print, an inkjet printing device preferably being used for this purpose.

Eine Druckvorrichtung der eingangs genannten Art ist beispielsweise aus der EP 2 657 035 A1 bekannt, die eine Trommel für den Transport eines bogenförmigen Substrats bereitstellt an der das Substrat sowohl mittels Greifern als auch mittels Saugluft an der Mantelfläche der Trommel fixiert werden kann, bevor es mit der Inkjet-Druckeinrichtung bedruckt wird.A printing device of the type mentioned is, for example, from EP 2 657 035 A1 known, which provides a drum for the transport of a sheet-shaped substrate on which the substrate can be fixed both by means of grippers and by means of suction air on the outer surface of the drum before it is printed with the inkjet printer.

Weitere Trommeln für den Transport von einem bogenförmigen Substrat sind in der EP 3 016 365 A1 , der US 2009/0 051 747 A1 und der DE 10 2016 207 398 B3 beschrieben. Bei den dort gezeigten Druckvorrichtungen hat es sich jedoch als nachteilhaft herausgestellt, dass die Trommeln lediglich entweder mechanische Greifelemente oder lediglich eine Saugluft zur Fixierung des bogenförmigen Substrats an der Trommel einsetzen.Additional drums for the transport of a sheet substrate are in the EP 3 016 365 A1 , the US 2009/0 051 747 A1 and the DE 10 2016 207 398 B3 described. In the case of the printing devices shown there, however, it has been found to be disadvantageous that the drums only use either mechanical gripping elements or only suction air to fix the sheet-like substrate on the drum.

Eine für die Zwecke der Herstellung von Ausweis-, Wert- oder Sicherheitsdokumenten sehr bewährte Druckvorrichtung ist in der DE 10 2016 221 192 A1 der Anmelderin beschrieben, die es ermöglicht, ein bogenförmiges Substrat beidseitig zu bedrucken. Nach dem Bedrucken der ersten Substratseite wird dabei das bogenförmige Substrat mittels Umlenkwalzen gewendet, bevor es auch auf der zweiten Substratseite bedruckt wird.A printing device that has proven itself for the purposes of producing identity documents, value documents or security documents is in the DE 10 2016 221 192 A1 described by the applicant, which makes it possible to print a sheet-shaped substrate on both sides. After the first side of the substrate has been printed, the sheet-shaped substrate is turned by means of deflection rollers before it is also printed on the second side of the substrate.

Die US 2009 / 0 035 046 A1 beschäftigt sich mit einer Trommel zum Tragen eines Substratbogens, wobei die Trommel einen Saugluftbereich an seiner Mantelfläche bereitstellt, der um Greifer ergänzt ist.the US 2009/0 035 046 A1 deals with a drum for carrying a substrate sheet, the drum providing a suction air area on its outer surface, which is supplemented by grippers.

In der US 2013 / 0 021 402 A1 ist ebenfalls eine Druckeinrichtung gezeigt, die eine Fördereinrichtung umfasst, die eine Vielzahl von Medien jeweils an verschiedenen Haltebereichen hält und befördert. Zudem ist ein Bilderzeugungsabschnitt vorgesehen, um Bilder auf die Oberflächen der Medien zu drucken, sowie eine Steuervorrichtung, die so eingestellt ist, dass die Medien zu einem vorbestimmten Haltebereich transportiert werden, ohne alle Haltebereiche der Fördereinrichtung zu benutzen.In the US 2013/0 021 402 A1 Also shown is a printing device that includes a conveyor that holds and conveys a plurality of media, each at different holding areas. In addition, an image forming section is provided for printing images on the surfaces of the media, and a control device which is set so that the media at a predetermined Holding area are transported without using all holding areas of the conveyor.

In der EP 2 610 064 31 ist eine weitere Trommel für eine Tintenstrahldruckvorrichtung beschrieben, die eine Saugfläche aufweist und durch Ansaugen ein Medium transportieren kann, um eine Faltenbildung zu verhindern.In the EP 2 610 064 31 Another drum for an inkjet printing device is described, which has a suction surface and can transport a medium by suction in order to prevent wrinkling.

In der DE 103 12 870 A1 ist eine Digitaldruckmaschine beschrieben. Diese umfasst ein Digitaldruckwerk und einen nachgeschalteten Zwischenzylinder, der mit einem elastischen Material überzogen ist, sowie einen Gegendruckzylinder, wobei dieser bogenhaltende Greifer aufweist. Ferner weist der Gegendruckzylinder Greifer aufnehmende Aussparungen auf.In the DE 103 12 870 A1 describes a digital printing machine. This comprises a digital printing unit and a downstream intermediate cylinder which is coated with an elastic material, as well as an impression cylinder, this having sheet-holding grippers. Furthermore, the impression cylinder has recesses that receive grippers.

In der CN 105 172 387 A ist ein zweiseitiger Tintenstrahldrucker offenbart, der aus einer Papierzuführeinheit, einer Druckeinheit und einer Papiersammeleinheit besteht. Die Papiertransporteinheit besteht aus einer Vielzahl von Papiertransportwalzen und die dazu dienen, das auf den Vorderseiten bedruckte Papier auf die Rückseitendruckwalze zu übertragen, um die Rückseiten bedrucken zu können.In the CN 105 172 387 A there is disclosed a two-sided ink jet printer composed of a paper feeding unit, a printing unit and a paper collecting unit. The paper transport unit consists of a plurality of paper transport rollers and which serve to transfer the paper printed on the front sides to the back side printing roller in order to be able to print the back side.

Die US 2011 / 0 025 807 A1 beschreibt eine Trommel, die in einer Druckmaschine Einsatz findet. Diese Trommel dient der Fixierung eines zu bedruckenden Substrats, wobei sie sowohl Greiferfinger zur mechanischen Fixierung des Substrats als auch einen Saugluftbereich zur Fixierung des Substrats mittels eines Unterdrucks aufweist. Diese Ausgestaltung dient dem Zweck, dass beim mechanischen Ergreifen des Substrats am vorderen Ende sich das Papier nicht "aufstellt".the US 2011/0 025 807 A1 describes a drum that is used in a printing machine. This drum is used to fix a substrate to be printed, it has both gripper fingers for mechanical fixation of the substrate and a suction air area for fixation of the substrate by means of a negative pressure. The purpose of this configuration is to ensure that the paper does not "stand up" when the substrate is mechanically gripped at the front end.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Druckvorrichtung der eingangs genannten Art derart weiterzubilden, dass ein verbessertes Aufnehmen und Abgeben sowie verzugfreies Fixieren und Transportieren des bogenförmigen Substrats ermöglicht ist. Ferner ist es Aufgabe der vorliegenden Erfindung, ein Verfahren zum Bedrucken eines bogenförmigen Substrats mit einer solchen Druckvorrichtung anzugeben.It is therefore the object of the present invention to develop a printing device of the type mentioned at the outset in such a way that an improved pick-up and delivery as well as distortion-free fixing and transport of the sheet-shaped substrate is made possible. A further object of the present invention is to specify a method for printing a sheet-like substrate with such a printing device.

Die die Druckvorrichtung betreffende Aufgabe wird durch eine Druckvorrichtung mit dem Merkmalsbestand des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen mit zweckmäßigen Weiterbildungen der Druckvorrichtung sind in den abhängigen Ansprüchen angegeben.The object relating to the printing device is achieved by a printing device with the set of features of claim 1. Advantageous configurations with expedient developments of the printing device are specified in the dependent claims.

Die Druckvorrichtung zeichnet sich insbesondere dadurch aus, dass der mindestens eine Greifer an einer parallel zur Trommellängsachse verlaufenden Befestigungsstange angebracht ist, die mittels eines druckmittelbetätigbaren Hebels verstellbar ist zwischen einer ersten Schwenkstellung, in welcher sich der mindestens eine Greifer in einer Offenstellung befindet, und einer zweiten Schwenkstellung, in welcher sich der mindestens eine Greifer in einer Schließstellung befindet.The pressure device is particularly characterized in that the at least one gripper is attached to a fastening rod that runs parallel to the longitudinal axis of the drum and that is adjustable by means of a lever that can be actuated by pressure medium between a first pivot position, in which the at least one gripper is in an open position, and a second Pivoting position in which the at least one gripper is in a closed position.

Damit ist ein hydraulisch oder pneumatisch betätigbares System geschaffen, das das bogenförmige Substrat sicher, insbesondere verzugsfrei, an der Mantelfläche der Trommel fixiert.This creates a hydraulically or pneumatically actuated system that securely fixes the sheet-like substrate, in particular without distortion, on the outer surface of the drum.

Um das bogenförmige Substrat beidseitig bedrucken zu können, hat es sich als vorteilhaft erwiesen, wenn zwei der Trommeln vorhanden sind, welche derart zueinander ausgerichtet sind, dass zwischen ihnen ein Übergabespalt ausgebildet ist zur Übergabe des bogenförmigen Substrats von einer ersten der Trommeln an eine zweite der Trommeln.In order to be able to print the sheet-like substrate on both sides, it has proven to be advantageous if there are two of the drums which are aligned with one another in such a way that a transfer gap is formed between them for transferring the sheet-like substrate from a first of the drums to a second of the Drums.

In diesem Zusammenhang hat es sich deshalb als vorteilhaft herausgestellt, wenn eine radial bezüglich der zweiten Trommel angeordnete zweite Druckeinrichtung, insbesondere eine zweite Inkjet-Druckeinrichtung, vorhanden ist.In this context, it has therefore been found to be advantageous if a second printing device, in particular a second inkjet printing device, arranged radially with respect to the second drum is present.

Um eine betriebssichere und kollisionsfreie Übergabe des bogenförmigen Substrats von der ersten Trommel an die zweite Trommel zu realisieren, ist die Möglichkeit eröffnet, dass der mindestens eine Greifer der Befestigungsstange der ersten Trommel versetzt bezüglich dem mindestens einen Greifer der Befestigungsstange der zweiten Trommel angeordnet ist.In order to achieve an operationally reliable and collision-free transfer of the arch-shaped substrate from the first drum to the second drum, the possibility is opened that the at least one gripper of the fastening rod of the first drum is arranged offset with respect to the at least one gripper of the fastening rod of the second drum.

Dabei kann insbesondere vorgesehen sein, dass eine Mehrzahl von Greifern an der Befestigungsstange der ersten Trommel angeordnet ist, und dass eine Mehrzahl von Greifern an der Befestigungsstange der zweiten Trommel angeordnet ist. Die Greifer der ersten Trommel und die Greifer der zweiten Trommel sind vorzugsweise, insbesondere im Übergabespalt, kammartig verzahnend zueinander ausgerichtet. Damit lässt sich gewährleisten, dass die sich bewegenden Teile der ersten Trommel nicht mit denjenigen der zweiten Trommel kollidieren.It can be provided in particular that a plurality of grippers is arranged on the fastening rod of the first drum, and that a plurality of grippers is arranged on the fastening rod of the second drum. The grippers of the first drum and the grippers of the second drum are preferably aligned with one another in a comb-like manner, in particular in the transfer gap. This ensures that the moving parts of the first drum do not collide with those of the second drum.

Um den Durchsatz an zu bedruckenden bogenförmigen Substraten zu erhöhen oder um die Taktzeiten für die Herstellung von Ausweis-, Wert- oder Sicherheitsdokumenten zu reduzieren, hat es sich als sinnvoll erwiesen, wenn eine Mehrzahl von über den Umfang der Trommel verteilt angeordneter Befestigungsstangen mit Greifern sowie eine zur Anzahl der Befestigungsstangen korrespondierende Anzahl an Saugluftbereichen vorhanden ist.In order to increase the throughput of sheet-shaped substrates to be printed or to reduce the cycle times for the production of ID, value or security documents, it has proven to be useful if a plurality of fastening rods with grippers and grippers distributed over the circumference of the drum there is a number of suction air areas corresponding to the number of fastening rods.

Um die Druckvorrichtung und insbesondere die Trommel mit weniger Gewicht ausführen zu können, ist es vorteilhaft, wenn der Saugluftbereich lediglich bereichsweise an der Mantelfläche der Trommel unter einem vorgegebenen Abstand von dem mindestens einen Greifer angeordnet ist. Somit entsteht an der Mantelfläche also ein fixationsfreier Mantelbereich zwischen dem Greifer und dem Saugluftbereich, so dass das bogenförmige Substrat verzugsfrei insbesondere an seiner vorderen Kante mittels des Greifers und an seiner hinteren Kante mittels der Saugluft an der Trommel fixiert werden kann.In order to be able to carry out the printing device and in particular the drum with less weight, it is advantageous if the suction air area is only arranged in areas on the outer surface of the drum at a predetermined distance from the at least one gripper. Thus, a fixation-free jacket area arises on the jacket surface between the gripper and the suction air area, so that the curved substrate can be fixed to the drum without distortion, in particular at its front edge by means of the gripper and at its rear edge by means of the suction air.

Für die Aufnahme des bogenförmigen Substrats an der Mantelfläche der Trommel ist erfindungsgemäß vorgesehen, dass die Befestigungsstange an einer Schwenkhalterung drehbar gelagert ist, welche verstellbar ist zwischen einer angehobenen Stellung, in der die Befestigungsstange über die Mantelfläche der Trommel hervorsteht, und einer versenkten Stellung, in der die Befestigungsstange wenigstens planflächig zu der Mantelfläche der Trommel angeordnet ist. Die Verstellung der Schwenkhalterung kann beispielsweise mittels eines elektrischen Stellmotors erfolgen. Alternativ kann die Verstellung druckmittelbetätigt, insbesondere pneumatisch oder hydraulisch, erfolgen. Die Verstellung der mindestens einen Schwenkhalterung kann dabei alternativ oder ergänzend schwerkraftgetrieben erfolgen. Das bedeutet, dass die Schwenkhalterung in die angehobene Stellung verbracht wird, wenn sie sich gegenüber einem unterhalb der Trommel befindlichen Bogenanleger befindet, mithin also aufgrund der Schwerkraft aus der Mantelfläche der Trommel herausgeschwenkt wird und damit über die Mantelfläche hervorsteht.To accommodate the arched substrate on the outer surface of the drum, the invention provides that the fastening rod is rotatably mounted on a swivel bracket, which is adjustable between a raised position, in which the fastening rod protrudes over the outer surface of the drum, and a lowered position, in which the fastening rod is arranged at least flat to the outer surface of the drum. The swivel bracket can be adjusted, for example, by means of an electric servomotor. Alternatively, the adjustment can be operated by pressure medium, in particular pneumatically or hydraulically. The adjustment of the at least one swivel bracket can be an alternative or a supplement be carried out gravity driven. This means that the swivel bracket is brought into the raised position when it is located opposite a sheet feeder located below the drum, so it is pivoted out of the outer surface of the drum due to gravity and thus protrudes beyond the outer surface.

In diesem Zusammenhang ist auch die Möglichkeit eröffnet, dass der Schwenkhalterung eine Laufrolle zugeordnet ist, die ausgestaltet ist, mit einer Steuerkurve oder einem Anlauf oder einer Führungsleiste der derart wechselzuwirken, dass die Schwenkhalterung, insbesondere bei vorgegebenen Winkelstellungen der Trommel, zwischen ihrer angehobenen Stellung und ihrer versenkten Stellung verstellt wird. Im Falle einer schwerkraftgetriebenen Verstellung der Schwenkhalterung zwischen der angehobenen Stellung und der versenkten Stellung kann die Laufrolle dazu genutzt werden, um an einer Fläche des Bogenanlegers oder an einem Teil eines Maschinenrahmens entlang zu rollen, wodurch die Schwenkhalterung wieder eingeklappt und in ihre versenkte Stellung überführt wird. Eine kinematische Umkehrung ist möglich.In this context, the possibility is also opened up that the swivel mount is assigned a roller which is designed to interact with a control cam or a run-up or a guide bar in such a way that the swivel mount, in particular at predetermined angular positions of the drum, between its raised position and their recessed position is adjusted. In the case of a gravity-driven adjustment of the swivel bracket between the raised position and the lowered position, the roller can be used to roll along a surface of the sheet feeder or a part of a machine frame, whereby the swivel bracket is folded in again and transferred into its lowered position . A kinematic reversal is possible.

Für eine sichere Fixierung des bogenförmigen Substrats an der Mantelfläche der Trommel ist es alternativ oder ergänzend sinnvoll, wenn die Trommel mindestens eine Schalteinrichtung aufweist, die ausgestaltet ist, den Saugluftbereich nur unter vorgegebenen Winkelstellungen oder nur innerhalb eines vorgegebenen Bereichs von Winkelstellungen der Trommel zwischen einer aktiven, eine Saugleistung an der Mantelfläche bereitstellenden Konfiguration, und einer inaktiven, die Saugleistung an der Mantelfläche nicht bereitstellenden oder unterbindenden Konfiguration, zu verstellen. In diesem Zusammenhang hat es sich als vorteilhaft herausgestellt, wenn ein zu bedruckendes bogenförmiges Substrats zunächst mit den an der Befestigungsstange befestigten Greifern fixiert wird, bevor es zeitlich nachfolgend im Saugluftbereich der Trommel angesaugt wird.For a secure fixation of the arch-shaped substrate on the outer surface of the drum, it is alternatively or additionally sensible if the drum has at least one switching device which is designed to switch the suction air area only at predetermined angular positions or only within a predetermined range of angular positions of the drum between an active one to adjust a configuration providing suction power on the lateral surface, and an inactive configuration that does not provide or suppresses the suction power on the lateral surface. In this context, it has been found to be advantageous if a sheet-shaped substrate to be printed is first fixed with the grippers attached to the fastening rod before it is subsequently sucked in in the suction air area of the drum.

Auch hier ist es von Vorteil, wenn die Schalteinrichtung in einer in der Trommel ausgebildeten Trommelkulisse geführt ist, und wenn die Schalteinrichtung ein Schaltglied aufweist, das ausgestaltet ist, mit einer Steuerkurve oder einem Anlauf oder einer Führungsleiste derart wechselzuwirken, um den Saugluftbereich zwischen der aktiven Konfiguration und der inaktiven Konfiguration zu verstellen. Das Schaltglied kann in der Trommelkulisse beispielsweise mittels eines elektrischen Stellmotors oder druckmittelbetätigt, insbesondere pneumatisch oder hydraulisch, verstellt werden. Es ist zudem möglich, dass es schwerkraftgetrieben verstellt wird, so dass die Verstellbarkeit des Schaltglieds in analoger Weise zu der Verstellbarkeit der Schwenkhalterung erfolgen kann.Here, too, it is advantageous if the switching device is guided in a drum link formed in the drum, and if the switching device has a switching element which is designed to interact with a control cam or a run-up or a guide bar in such a way as to create the suction air area between the active configuration and the inactive configuration. The switching element can be adjusted in the drum link, for example, by means of an electric servomotor or by means of a pressure medium, in particular pneumatically or hydraulically. It is also possible for it to be adjusted by means of gravity, so that the adjustability of the switching element can take place in a manner analogous to the adjustability of the swivel mount.

Eine sichere Verstellbarkeit der Befestigungsstange lässt sich aber auch dadurch realisieren, dass die Schwenkhalterung beidseits der Trommel vorhanden ist. Die beiden Schwenkhalterungen lagern dann die Befestigungsstange drehbar zwischen sich, so dass die Schwenkhalterungen mit der Befestigungsstange einen Schwenkbügel bilden. Entsprechend verhält es sich mit der Schaltkulisse, die beidseits der Trommel vorhanden oder beidseits in der Trommel ausgebildet sein kann, um ein einseitig oder beidseits der Trommel vorhandenes Schaltglied zu führen.Safe adjustability of the fastening rod can, however, also be achieved in that the swivel bracket is present on both sides of the drum. The two swivel brackets then support the fastening rod rotatably between them, so that the swivel brackets form a swivel bracket with the fastening rod. The same applies to the shift gate, which can be provided on both sides of the drum or formed on both sides in the drum in order to guide a shift element that is provided on one side or on both sides of the drum.

Die das Verfahren betreffende Aufgabe wird durch ein Verfahren mit dem Merkmalsbestand des Anspruchs 10 gelöst. Vorteilhafte Ausgestaltungen mit zweckmäßigen Weiterbildungen des Verfahrens sind in den davon abhängigen Ansprüchen angegeben.The object relating to the method is achieved by a method having the set of features of claim 10. Advantageous refinements with expedient developments of the method are specified in the dependent claims.

Die für die erfindungsgemäße Druckvorrichtung beschriebenen Vorteile und bevorzugten Ausführungsformen gelten auch für das erfindungsgemäße Verfahren zum Bedrucken eines bogenförmigen Substrats mit einer solchen Druckvorrichtung.The advantages and preferred embodiments described for the printing device according to the invention also apply to the method according to the invention for printing a sheet-like substrate with such a printing device.

Das Verfahren zeichnet sich insbesondere durch die folgenden Schritte aus:

  • Bereitstellen des bogenförmigen Substrats mittels eines Bogenanlegers,
  • Verdrehen der Trommel um ihre Trommellängsachse und Verschwenken der Befestigungsstange in die erste Schwenkstellung, wodurch der mindestens eine Greifer in die Offenstellung verbracht wird,
  • Ergreifen des bogenförmigen Substrats an einem ersten Substratbereich mittels des Greifers beim Verschwenken der Befestigungsstange in die zweite Schwenkstellung, wodurch der mindestens eine Greifer in die Schließstellung gebracht wird,
  • Weiterdrehen der Trommel und Fixieren des bogenförmigen Substrats an der Mantelfläche der Trommel an einem zweiten Substratbereich mittels der durch den Saugluftbereich bereitgestellten Saugluft, und
  • Transportieren des bogenförmigen Substrats zu einer Druckeinrichtung durch Weiterdrehen der Trommel und Bedrucken des bogenförmigen Substrats auf einer ersten Substratseite.
The procedure is characterized in particular by the following steps:
  • Providing the sheet-shaped substrate by means of a sheet feeder,
  • Rotation of the drum about its longitudinal axis and pivoting of the fastening rod into the first pivoting position, whereby the at least one gripper is brought into the open position,
  • Gripping of the arch-shaped substrate on a first substrate area by means of the gripper when pivoting the fastening rod into the second pivot position, whereby the at least one gripper is brought into the closed position,
  • Further rotation of the drum and fixing of the arcuate substrate on the outer surface of the drum on a second substrate area by means of the suction air provided by the suction air area, and
  • Transporting the sheet-like substrate to a printing device by rotating the drum further and printing the sheet-like substrate on a first side of the substrate.

Um zu gewährleisten, dass das bogenförmige Substrat sicher von dem Greifer und dem Saugluftbereich an der Mantelfläche fixiert wird, hat es sich als vorteilhaft erwiesen, wenn das bogenförmige Substrat zwischen dem durch den mindestens einen Greifer fixierten ersten Substratbereich und dem durch den Saugluftbereich fixierten zweiten Substratbereich mittels einer Aufstreifeinrichtung auf die Mantelfläche der Trommel aufgestrichen wird, wobei die Aufstreifeinrichtung insbesondere als eine Klinge, eine Leiste, eine Bürstenleiste oder dergleichen gebildet ist.In order to ensure that the arcuate substrate is securely fixed by the gripper and the suction air area on the outer surface, it has proven to be advantageous if the arcuate substrate is between the first substrate area fixed by the at least one gripper and the second substrate area fixed by the suction air area is wiped onto the outer surface of the drum by means of a wiping device, the wiping device being formed in particular as a blade, a strip, a brush strip or the like.

Eine besonders betriebssichere Entnahme des bogenförmigen Substrats aus einem Bogenanleger lässt sich dadurch realisieren, dass zuerst das bogenförmige Substrat mittels dem mindestens einen Greifer erfasst wird, und dass zeitlich nachfolgend der Saugluftbereich aus einer inaktiven, die Saugleistung an der Mantelfläche unterbindenden Konfiguration in eine aktive, eine Saugleistung an der Mantelfläche bereitstellenden Konfiguration verstellt wird zur zeitlich nachfolgenden Fixierung des zweiten Substratbereichs des bogenförmigen Substrats.A particularly reliable removal of the arch-shaped substrate from a sheet feeder can be realized in that first the arch-shaped substrate is grasped by means of the at least one gripper, and that subsequently the suction air area from an inactive configuration, which prevents the suction power on the outer surface, into an active, one The configuration providing suction power on the lateral surface is adjusted for the temporally subsequent fixation of the second substrate region of the arch-shaped substrate.

Für die Zwecke der Herstellung eines Passbuchblocks mit Visaseiten hat es sich als vorteilhaft herausgestellt, wenn die Trommel nach dem Bedrucken der ersten Substratseite weiter gedreht wird, und wenn das bogenförmige Substrat in einem Übergabespalt an eine zweite Trommel übergeben und mittels einer zweiten Druckeinrichtung auf einer zweiten Substratseite bedruckt wird.For the purpose of producing a passport book block with visa pages, it has been found to be advantageous if the drum is rotated further after the first substrate side has been printed, and if the sheet-shaped substrate is transferred to a second drum in a transfer gap and on a second drum by means of a second printing device Substrate side is printed.

Um das einseitig oder vorzugsweise beidseitig bedruckte bogenförmige Substrat zu sammeln, gegebenenfalls zuzuschneiden und/oder zusammenzutragen, hat es sich als sinnvoll erwiesen, wenn das bogenförmige Substrat nach dem Bedrucken der ersten Substratseite oder nach dem Bedrucken der zweiten Substratseite an eine Bogenablage gegeben wird.In order to collect the sheet-like substrate printed on one side or, preferably, on both sides, if necessary to cut it to size and / or to collate it, it has proven to be useful if the sheet-like substrate after printing first substrate side or after printing on the second substrate side is given to a sheet depository.

Zur Taktzeitreduzierung im Herstellungsprozess eines Ausweis-, Wert- oder Sicherheitsdokuments, ist die Möglichkeit eröffnet, durch die Trommel mehrere bogenförmige Substrate gleichzeitig transportieren zu lassen. Vorzugsweise ist hierzu eine zur Anzahl der zu transportierenden bogenförmigen Substrate korrespondierende Anzahl an Befestigungsstangen und Saugluftbereichen an jeder der Trommeln vorhanden.In order to reduce cycle times in the production process of an identity document, value document or security document, the possibility is opened up of having several sheet-shaped substrates transported through the drum at the same time. For this purpose, a number of fastening rods and suction air areas corresponding to the number of sheet-shaped substrates to be transported is preferably provided on each of the drums.

Die vorstehend in der Beschreibung genannten Merkmale und Merkmalskombinationen sowie die nachfolgend in der Figurenbeschreibung genannten und/oder in den Figuren alleine gezeigten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar, ohne den Rahmen der Erfindung zu verlassen. Es sind somit auch Ausführungen als von der Erfindung umfasst und offenbart anzusehen, die in den Figuren nicht explizit gezeigt oder erläutert sind, jedoch durch separierte Merkmalskombinationen aus den erläuterten Ausführungen hervorgehen und erzeugbar sind.The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination, but also in other combinations or on their own, without the scope of Invention to leave. Thus, embodiments are also to be regarded as encompassed and disclosed by the invention, which are not explicitly shown or explained in the figures, but which emerge and can be generated from the explained embodiments by means of separate combinations of features.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Ansprüchen, der nachfolgenden Beschreibung einer bevorzugten Ausführungsform sowie anhand der Zeichnungen. Dabei zeigen:

Figur 1
eine Seitenansicht einer Druckvorrichtung mit einem Bogenanleger und einer Bogenablage, welche zwei Trommeln und zwei Druckeinrichtungen zum beidseitigen Bedrucken des bogenförmigen Substrats umfasst,
Figur 2
eine Ansicht von links auf die Druckvorrichtung nach Figur 1,
Figur 3
eine perspektivische Frontansicht auf eine Trommel,
Figur 4
eine perspektivische Rückansicht auf eine Trommel,
Figur 5
einen Detailausschnitt auf die Fixierung eines bogenförmigen Substrats an seinem ersten Substratbereich mittels einer Mehrzahl von Greifern, und
Figur 6
das Detail B aus Figur 1.
Further advantages, features and details of the invention emerge from the claims, the following description of a preferred embodiment and on the basis of the drawings. Show:
Figure 1
a side view of a printing device with a sheet feeder and a sheet deposit, which comprises two drums and two printing devices for printing on both sides of the sheet-shaped substrate,
Figure 2
a left view of the printing device according to Figure 1 ,
Figure 3
a perspective front view of a drum,
Figure 4
a perspective rear view of a drum,
Figure 5
a detail of the fixation of a curved substrate on its first substrate area by means of a plurality of grippers, and
Figure 6
the detail B. Figure 1 .

Bei der nachstehenden Beschreibung der Figuren sind gleiche Bauteile mit den gleichen Bezugszeichen versehen, wobei die Größenverhältnisse oder Abmessungen in den einzelnen Darstellungen variieren können.In the following description of the figures, the same components are provided with the same reference numerals, it being possible for the proportions or dimensions to vary in the individual illustrations.

In Figur 1 ist eine Druckvorrichtung 200 gezeigt, welche dem Bedrucken eines bogenförmigen Substrats 300 dient. Diese Druckvorrichtung 200 wird insbesondere bei der Herstellung eines deutschen Reisepasses verwendet. Die Druckvorrichtung 200 umfasst vorliegend eine erste Trommel 202A und eine zweite Trommel 202B, die gegenläufig zueinander kontinuierlich oder getaktet, rotierend um ihre Trommellängsachsen 204 antreibbar sind. Die beiden Trommeln 202A, 202B sind derart zueinander ausgerichtet, dass zwischen ihnen ein Übergabespalt 216 ausgebildet ist zur Übergabe des bogenförmigen Substrats 300 von der ersten Trommel 202A an die zweite Trommel 202B. An den Mantelflächen 206 der Trommeln 202A, 202B ist das bogenförmige Substrat 300 zumindest bereichsweise fixierbar. Die Fixierung erfolgt einerseits mittels eines Greifers 208 an einem ersten Substratbereich 302 und andererseits mittels einer durch einen Saugluftbereich 210 der Trommeln 202A, 202B bereitgestellten Saugluft an einem zweiten Substratbereich 304.In Figure 1 a printing device 200 is shown, which is used for printing a sheet-shaped substrate 300. This printing device 200 is used in particular in the production of a German passport. In the present case, the printing device 200 comprises a first drum 202A and a second drum 202B, which can be driven continuously or clocked in opposite directions, rotating about their drum longitudinal axes 204. The two drums 202A, 202B are aligned with one another in such a way that a transfer gap 216 is formed between them for transferring the arcuate substrate 300 from the first drum 202A to the second drum 202B. The arcuate substrate 300 can be fixed at least in regions on the outer surfaces 206 of the drums 202A, 202B. The fixation takes place on the one hand by means of a gripper 208 on a first substrate region 302 and on the other hand by means of suction air provided by a suction air region 210 of the drums 202A, 202B on a second substrate region 304.

Um das Substrat 300 auf einer ersten Substratseite bedrucken zu können, ist der ersten Trommel 202A eine erste Druckeinrichtung 250A radial, insbesondere vertikal oberhalb der Trommel 202A, zugeordnet. Die erste Druckeinrichtung 250A ist beispielsweise als eine mehrere Druckköpfe umfassende Inkjet-Druckeinrichtung gebildet. Um das bogenförmige Substrat 300 auf einer zweiten Substratseite bedrucken zu können, ist der zweiten Trommel 202B eine zweite Druckeinrichtung 250B radial, insbesondere vertikal oberhalb der Trommel 202B, zugeordnet. Die zweite Druckeinrichtung 250B ist beispielsweise ebenfalls als eine mehrere Druckköpfe umfassende Inkjet-Druckeinrichtung gebildet. Vorliegend sind die beiden Druckeinrichtungen 250A, 250B parallel zueinander ausgerichtet.In order to be able to print the substrate 300 on a first substrate side, the first drum 202A is assigned a first printing device 250A radially, in particular vertically above the drum 202A. The first printing device 250A is formed, for example, as an inkjet printing device comprising a plurality of print heads. In order to be able to print the sheet-shaped substrate 300 on a second substrate side, a second printing device 250B is assigned to the second drum 202B radially, in particular vertically above the drum 202B. The second printing device 250B is also, for example, one of several Formed printheads comprehensive inkjet printing device. In the present case, the two printing devices 250A, 250B are aligned parallel to one another.

In der Zeichnung ist unterhalb der ersten Trommel 202A ein Bogenanleger 400 vorhanden, der ausgestaltet ist, der ersten Trommel 202A das bogenförmige Substrat 300 zuzuführen. In der Zeichnung ist unterhalb der zweiten Trommel 202B eine Bogenablage 402 für die Ablage des beidseitig bedruckten bogenförmigen Substrats 300 vorhanden. Der Bogenanleger 400 und/oder die Bogenablage 402 können, manuell oder automatisiert, höhenverstellbar ausgestaltet sein.In the drawing, a sheet feeder 400 is present below the first drum 202A, which sheet feeder is designed to feed the sheet-shaped substrate 300 to the first drum 202A. In the drawing, a sheet depository 402 for depositing the sheet-like substrate 300 printed on both sides is provided below the second drum 202B. The sheet feeder 400 and / or the sheet depository 402 can be designed to be height-adjustable, manually or automatically.

Wie sich aus Figur 2 ergibt, sind die Trommeln 202A, 202B um ihre Trommellängsachse 204 rotierend antreibbar, wobei zur Verdrehung oder für den Antrieb der Trommeln 202A, 202B ein Motor 232 vorgesehen ist. Außerdem lässt sich in der Seitenansicht auf die Trommeln 202A, 202B erkennen, dass diese vorliegend in eine Mehrzahl von einzelnen Streifen 234 untergliedert sind, wobei jedem der Streifen 234 einer der Greifer 208 zugeordnet ist. Außerdem ist jedem der Streifen 234 ein Abschnitt 240 des Saugluftbereichs 210 zugewiesen. Es ist zudem ersichtlich, dass der Saugluftbereich 210 lediglich bereichsweise an der Mantelfläche 206 der Trommeln 202A, 202B ausgebildet ist und einen vorgegebenen Abstand von dem mindestens einen Greifer 208 einhält.How out Figure 2 results, the drums 202A, 202B can be driven to rotate about their drum longitudinal axis 204, a motor 232 being provided for rotating or for driving the drums 202A, 202B. In addition, it can be seen in the side view of the drums 202A, 202B that these are in the present case subdivided into a plurality of individual strips 234, one of the grippers 208 being assigned to each of the strips 234. In addition, a section 240 of the suction air region 210 is assigned to each of the strips 234. It can also be seen that the suction air area 210 is only formed in areas on the lateral surface 206 of the drums 202A, 202B and maintains a predetermined distance from the at least one gripper 208.

Dieser Abstand ist noch besser in der Perspektivansicht der isoliert dargestellten Trommel 202A, 202B nach Figur 3 zu erkennen. Es ist dort eine Mehrzahl von Greifern 208 an einer Befestigungsstange 212 fixiert, wobei die Greifer 208 insbesondere äquidistant zueinander ausgerichtet sind. Die Befestigungsstange 212 ist mittels eines Hebels 214 um ihre Längsachse verschwenkbar zwischen einer ersten Schwenkstellung und einer zweiten Schwenkstellung. Der Hebel 214 öffnet und schließt also die an der Befestigungsstange 212 festgelegten Greifer 208. Mit anderen Worten ist also der mittels eines Druckmittels, insbesondere pneumatisch oder hydraulisch, betätigbare Hebel 214 derart ausgestaltet, die Befestigungsstange 212 zwischen der ersten Schwenkstellung, in welcher sich der mindestens eine Greifer 208 in einer Offenstellung befindet, und einer zweiten Schwenkstellung, in welcher sich der mindestens eine Greifer 208 in einer Schließstellung befindet verstellbar. In der Offenstellung der Greifer 208 kann das bogenförmige Substrat 300 der Trommel 202A, 202B zugeführt werden, wobei die Greifer 208 in der Schließstellung das bogenförmige Substrat an der Mantelfläche 206 der Trommel 202A, 202B fixieren. Die Verstelleinheit zur Betätigung des Hebels 214 weist vorliegend eine linear verstellbare Kolbenstange 242 auf, die drehgelenkig am Hebel 214 festgelegt ist.This distance is even better in the perspective view of the drum 202A, 202B shown in isolation Figure 3 to recognize. A plurality of grippers 208 are fixed there on a fastening rod 212, the grippers 208 in particular being aligned equidistant from one another. The fastening rod 212 can be pivoted about its longitudinal axis between a first pivot position and a second pivot position by means of a lever 214. The lever 214 opens and closes the gripper 208 fixed on the fastening rod 212. In other words, the lever 214, which can be actuated by means of a pressure medium, in particular pneumatically or hydraulically, is designed in such a way that the fastening rod 212 is between the first pivot position in which the at least a gripper 208 is in an open position, and a second pivot position, in which the at least one gripper 208 is in a closed position, adjustable. In the open position of the gripper 208, the arch-shaped substrate 300 are fed to the drum 202A, 202B, the grippers 208 in the closed position fixing the arcuate substrate to the jacket surface 206 of the drum 202A, 202B. In the present case, the adjustment unit for actuating the lever 214 has a linearly adjustable piston rod 242 which is attached to the lever 214 in a pivot-joint manner.

Vorliegend ist die Trommel 202A, 202B ausgelegt, um gleichzeitig drei der bogenförmige Substrate 300 an ihrer Mantelfläche 206 zu fixieren und diese zu transportieren. Eine andere Anzahl ist möglich, wobei der Durchmesser der Trommel 202A, 202B und die Anzahl an Befestigungsstangen 212 mit Greifern 208 entsprechend angepasst werden können. Jedenfalls kann eine Mehrzahl von über den Umfang der Trommel 202A, 202B verteilt angeordneter Befestigungsstangen 212 mit Greifern 208 sowie eine zur Anzahl der Befestigungsstangen 212 korrespondierende Anzahl an Saugluftbereichen 210 vorhanden sein.In the present case, the drum 202A, 202B is designed to simultaneously fix three of the arcuate substrates 300 on their outer surface 206 and to transport them. Another number is possible, wherein the diameter of the drum 202A, 202B and the number of fastening rods 212 with grippers 208 can be adapted accordingly. In any case, a plurality of fastening rods 212 with grippers 208 distributed over the circumference of the drum 202A, 202B and a number of suction air areas 210 corresponding to the number of fastening rods 212 can be present.

Wie sich aus Figur 3 außerdem ergibt, ist die Befestigungsstange 212 vorliegend an einer Schwenkhalterung 218 drehbar gelagert. Vorliegend ist für jedes der zu transportierenden bogenförmigen Substrate 300 jeweils zwei der Schwenkhalterungen 218 vorhanden, welche beidseitig der Trommel 202A, 202B gelagert sind. Mit anderen Worten ist also für jedes zu bearbeitendes bogenförmiges Substrat eine erste Schwenkhalterung 218 an der ersten Stirnseite der Trommel 202A, 202B und eine zweite Schwenkhalterung 218 an der zweiten Stirnseite der Trommel 202A, 202B angeordnet, so dass sie mit der Befestigungsstange 212 einen Schwenkbügel bilden. Mit nochmals anderen Worten ist die erste Schwenkhalterung 218 bezüglich der Trommellängsachse 204 also vor der Mantelfläche 206 und die zweite Schwenkhalterung 218 bezüglich der Trommellängsachse 204 nach der Mantelfläche 206 der Trommel 202A, 202B angeordnet.How out Figure 3 In addition, the fastening rod 212 is rotatably mounted on a pivot bracket 218 in the present case. In the present case, for each of the arcuate substrates 300 to be transported, there are two swivel mounts 218, which are mounted on both sides of the drum 202A, 202B. In other words, a first swivel mount 218 is arranged on the first end face of the drum 202A, 202B and a second swivel mount 218 is arranged on the second end face of the drum 202A, 202B for each arcuate substrate to be processed, so that they form a swivel bracket with the fastening rod 212 . In yet other words, the first pivot bracket 218 is arranged with respect to the drum longitudinal axis 204 in front of the lateral surface 206 and the second pivot bracket 218 with respect to the drum longitudinal axis 204 after the lateral surface 206 of the drum 202A, 202B.

Diese Schwenkhalterung 218 ist verstellbar zwischen einer angehobenen Stellung, in der die Befestigungsstange 212 über die Mantelfläche 206 der Trommel 202A, 202B hervorsteht (bspw. Schwenkhalterung 218 im Bild unten) und einer versenkten Stellung, in der die Befestigungsstange 212 wenigstens planflächig zu der Mantelfläche 206 der Trommel 202A, 202B angeordnet ist (bspw. Schwenkhalterungen 218 im Bild links und rechts oben). Dabei kann die Schwenkhalterung 218 auch schwerkraftgetrieben in die angehobenen Stellung verbracht werden. Beispielsweise kann sie - unter dem Einfluss der Erdanziehungskraft - aus einer Führungsausnehmung 246 der Trommel 202A, 202B herauskippen, wenn sie sich im Bild unten an der Trommel 202A, 202B befindet, oder wenn sie gegenüber dem Bogenanleger 400 angeordnet ist. Die Verstellung der Schwenkhalterung 218 kann aber auch mittels eines elektrischen Stellmotors erfolgen. Alternativ kann die Verstellung der Schwenkhalterung 218 druckmittelbetätigt, insbesondere pneumatisch oder hydraulisch, erfolgen. Außerdem ist die Schwenkhalterung 218 vorliegend in einer Führungsnut 244 der Trommel 202A, 202B geführt bewegbar zwischen zwei Anschlägen, wobei sich die Führungsnut 244 tangential bezüglich der Mantelfläche 206 bzw. entlang einer Sekante des durch die Mantelfläche 206 beschriebenen Kreises erstreckt. Der Schwenkhalterung 218 ist ferner eine Laufrolle 222 zugewiesen, die ausgestaltet ist, mit einer Steuerkurve oder einem Anlauf oder einer Führungsleiste, beispielsweise einer Führungsleiste eines Maschinenrahmens, derart wechselzuwirken, dass die Schwenkhalterung 218 wieder in die Führungsausnehmung 246 und damit zurück in ihre versenkte Stellung verbracht wird. Es ist auch möglich, dass eine kinematische Umkehrung vorliegt, wonach die Laufrolle 222 dazu genutzt wird, die Schwenkhalterung 218 aus der Führungsausnehmung 246 auszurücken und in die angehobene Stellung zu überführen.This swivel bracket 218 is adjustable between a raised position in which the fastening rod 212 protrudes over the jacket surface 206 of the drum 202A, 202B (e.g. swivel bracket 218 in the picture below) and a recessed position in which the fastening rod 212 is at least flat to the jacket surface 206 the drum 202A, 202B is arranged (e.g. Swivel brackets 218 in the picture on the left and right above). The swivel bracket 218 can also be brought into the raised position by gravity. For example, under the influence of the force of gravity, it can tilt out of a guide recess 246 in the drum 202A, 202B if it is located at the bottom of the drum 202A, 202B in the picture, or if it is arranged opposite the sheet feeder 400. The swivel bracket 218 can also be adjusted by means of an electric servomotor. Alternatively, the swivel bracket 218 can be adjusted by means of pressure medium, in particular pneumatically or hydraulically. In addition, the pivot bracket 218 is guided in a guide groove 244 of the drum 202A, 202B and movable between two stops, the guide groove 244 extending tangentially with respect to the jacket surface 206 or along a secant of the circle described by the jacket surface 206. The swivel bracket 218 is also assigned a roller 222 which is designed to interact with a control cam or a run-up or a guide bar, for example a guide bar of a machine frame, in such a way that the swivel bracket 218 is brought back into the guide recess 246 and thus back into its lowered position will. It is also possible that there is a kinematic reversal, after which the roller 222 is used to disengage the swivel mount 218 from the guide recess 246 and to transfer it into the raised position.

Ferner ist zu erkennen, dass die Trommel 202A, 202B mindestens eine Schalteinrichtung 220 aufweist, die ausgestaltet ist, den Saugluftbereich 210 nur unter vorgegebenen Winkelstellungen oder nur innerhalb eines vorgegebenen Bereichs von Winkelstellungen der Trommel 202A, 202B zwischen einer aktiven, eine Saugleistung an der Mantelfläche 206 bereitstellenden Konfiguration und einer inaktiven, die Saugleistung an der Mantelfläche 206 unterbindenden Konfiguration zu verstellen.It can also be seen that the drum 202A, 202B has at least one switching device 220, which is designed to operate the suction air area 210 only at predetermined angular positions or only within a predetermined range of angular positions of the drum 202A, 202B between an active, one suction power on the lateral surface 206 providing configuration and an inactive configuration preventing the suction power on the lateral surface 206.

Ausweislich der Figur 4 ist hierzu die Schalteinrichtung 220 vorzugsweise in einer Trommelkulisse 226 geführt, wobei der Schalteinrichtung 220 ein Schaltglied 224 zugeordnet ist, das ausgestaltet ist, mit einer Steuerkurve oder einem Anlauf oder einer Führungsleiste, beispielsweise einer Führungsleiste eines Maschinenrahmens, derart wechselzuwirken, um den Saugluftbereich 210 zwischen der aktiven Konfiguration und der inaktiven Konfiguration zu verstellen. Die Verstellung der Schalteinrichtung 220 kann beispielsweise mittels eines elektrischen Stellmotors erfolgen. Alternativ kann die Verstellung der Schalteinrichtung 220 druckmittelbetätigt, insbesondere pneumatisch oder hydraulisch, erfolgen. Zudem kann die Schalteinrichtung 220 schwerkraftgetrieben sein, wobei das Schaltglied 224 beim Wechselwirken mit der Steuerkurve, dem Anlauf oder einer Führungsleiste die Schalteinrichtung 220 aktiv stellt. Auch hier ist die umgekehrte Möglichkeit (kinematische Umkehrung) eröffnet, so dass das Schaltglied 224, unter dem Einfluss der Schwerkraft, die Schalteinrichtung 220 in die inaktive Konfiguration überführt.As evidenced by the Figure 4 For this purpose, the switching device 220 is preferably guided in a drum link 226, the switching device 220 being assigned a switching element 224 which is configured with a control cam or a run-up or a guide bar, for example a guide bar Machine frame to interact in such a way as to adjust the suction air area 210 between the active configuration and the inactive configuration. The switching device 220 can be adjusted, for example, by means of an electric servomotor. Alternatively, the switching device 220 can be adjusted by means of a pressure medium, in particular pneumatically or hydraulically. In addition, the switching device 220 can be driven by gravity, the switching element 224 activating the switching device 220 when it interacts with the control cam, the run-up or a guide bar. Here, too, the reverse possibility (kinematic reversal) is opened up, so that the switching element 224, under the influence of gravity, converts the switching device 220 into the inactive configuration.

Figuren 3 und 4 ist zusätzlich zu entnehmen, dass der Abschnitt der Trommel 202A, 202B an welchem die Greifer 208 den ersten Substratbereich 302 fixieren frei von Sauglöchern oder saugluftbereichsfrei gebildet ist. Der Saugluftbereich 210 ist ausgebildet, das Substrat 300 in seinem vom ersten Substratbereich 302 beabstandeten zweiten Substratbereich 304 zu fixieren. Figures 3 and 4th it can also be seen that the section of the drum 202A, 202B on which the grippers 208 fix the first substrate area 302 is free of suction holes or suction air areas. The suction air region 210 is designed to fix the substrate 300 in its second substrate region 304, which is spaced apart from the first substrate region 302.

In Figur 5 ist zu erkennen, wie die Mehrzahl an Greifern 208 an der Befestigungsstange 212 angeordnet ist. Die Befestigungsstange 212 umfasst dabei eine Ausnehmung, die mit einem Gewinde versehen ist, um den Greifer 208 mittels mindestens einer, vorliegend mit genau drei Schrauben an der Befestigungsstange 212 festzulegen. Eine andere Anzahl an Schrauben ist möglich. Zudem ist eine andere Fixierung für die Greifer 208 möglich, welche beispielsweise mit Nieten, Nägeln oder sonstigen Klemmelementen zur Klemmung eines Greiferendes gebildet sein kann. Aus dieser Figur geht außerdem die Formgebung der Greifer 208 hervor, die einen Haltelappen 248 an ihrem freien, d.h. an ihrem nicht an der Befestigungsstange 212 angeordneten, Ende umfassen. Der Haltelappen 248 ist derjenige Teil des Greifers 208, der das bogenförmige Substrat 300 in seinem ersten Substratbereich 302 fixiert.In Figure 5 it can be seen how the plurality of grippers 208 is arranged on the fastening rod 212. The fastening rod 212 comprises a recess which is provided with a thread in order to fix the gripper 208 to the fastening rod 212 by means of at least one, in the present case exactly three screws. A different number of screws is possible. In addition, a different fixing for the gripper 208 is possible, which can be formed, for example, with rivets, nails or other clamping elements for clamping a gripper end. This figure also shows the shape of the grippers 208, which comprise a retaining tab 248 at their free end, ie at their end not arranged on the fastening rod 212. The holding tab 248 is that part of the gripper 208 which fixes the arcuate substrate 300 in its first substrate region 302.

In Figur 6 ist der Übergabespalt 216 in einem Detailausschnitt gezeigt, wobei sich der Greifer 208 der zweiten Trommel 202B in der Offenstellung befindet, und wobei sich der Greifer 208 der ersten Trommel 202A in der Schließstellung befindet. Die unterschiedlichen Schwenkstellungen der beiden gezeigten Befestigungsstangen 212 sind daran zu erkennen, dass die beiden Kolbenstangen 242 unterschiedlich lang sichtbar sind, und dass zudem unterschiedliche Schwenkstellungen für die beiden Hebel 214 vorliegen. Um vorliegend Kollisionen der Greifer 208 der ersten Trommel 202A und der Greifer 208 der zweiten Trommel 202B zu vermeiden, sind die Greifer 208 an den Befestigungsstangen 212 versetzt zueinander ausgerichtet, wobei die Greifer 208 der ersten Trommel 202A insbesondere kammartig mit den Greifern 208 der zweiten Trommel 202B verzahnen.In Figure 6 the transfer gap 216 is shown in a detailed section, wherein the gripper 208 of the second drum 202B is in the open position, and wherein the gripper 208 of the first drum 202A is in the closed position. the Different pivot positions of the two fastening rods 212 shown can be recognized from the fact that the two piston rods 242 are visible with different lengths, and that there are also different pivot positions for the two levers 214. In order to avoid collisions between the grippers 208 of the first drum 202A and the grippers 208 of the second drum 202B, the grippers 208 on the fastening rods 212 are offset from one another, the grippers 208 of the first drum 202A in particular in a comb-like manner with the grippers 208 of the second drum 202B interlock.

Nachstehend wird anhand der Figur 1 beschrieben, wie ein bogenförmiges Substrat 300 beidseitig mit der erläuterten Druckvorrichtung 200 bedruckt wird.The following is based on the Figure 1 describes how a sheet-shaped substrate 300 is printed on both sides with the printing device 200 explained.

Zunächst wird das bogenförmige Substrat 300 mittels des Bogenanlegers 400 bereitgestellt, wobei die erste Trommel 202A um ihre Trommellängsachse 204 entgegen des Uhrzeigersinns verdreht und die Befestigungsstange 212 der ersten Trommel 202A in ihre erste Schwenkstellung verschwenkt wird, wodurch die Greifer 208 der ersten Trommel 202A in die Offenstellung überführt werden.First, the sheet-shaped substrate 300 is provided by means of the sheet feeder 400, the first drum 202A being rotated counterclockwise about its drum longitudinal axis 204 and the fastening rod 212 of the first drum 202A being swiveled into its first swivel position, whereby the grippers 208 of the first drum 202A are swiveled into the Open position will be transferred.

Dann wird das bogenförmige Substrat 300 an einem ersten Substratbereich 302 mittels der Greifer 208 ergriffen beim Verschwenken der Befestigungsstange 212 in die zweite Schwenkstellung, womit die Greifer 208 also in die Schließstellung überführt sind. Die Trommel 202A wird weitergedreht und das bogenförmige Substrat 300 wird mittels einer Aufstreifeinrichtung 230, insbesondere einer Bürstenleiste auf die Mantelfläche 206 aufgestrichen. Zeitlich nachfolgend wird der zweite Substratbereich 304 des Substrats 300 mittels der durch den Saugluftbereich 210 bereitgestellten Saugluft an der Mantelfläche 206 der Trommel 202A fixiert. Zeitgleich oder nachfolgend wird das Substrat 300 zur ersten Druckeinrichtung 250A transportiert, wo es auf seiner ersten Substratseite bedruckt wird.Then the arch-shaped substrate 300 is gripped on a first substrate region 302 by means of the grippers 208 when the fastening rod 212 is pivoted into the second pivot position, whereby the grippers 208 are thus transferred into the closed position. The drum 202A is rotated further and the arcuate substrate 300 is brushed onto the lateral surface 206 by means of a wiping device 230, in particular a brush strip. Subsequently in time, the second substrate region 304 of the substrate 300 is fixed to the jacket surface 206 of the drum 202A by means of the suction air provided by the suction air region 210. Simultaneously or subsequently, the substrate 300 is transported to the first printing device 250A, where it is printed on its first substrate side.

Anschließend wird das einseitige bedruckte Substrat 300 weitertransportiert, bis der erste Substratbereich 302 im Übergabespalt 216 angekommen ist, wo die Greifer 208 der zweiten Trommel 202B das bogenförmige Substrat 300 übernehmen und die Greifer 208 der ersten Trommel 202A zur Freigabe des Substrats in die Offenstellung überführt werden.The one-sided printed substrate 300 is then transported on until the first substrate area 302 has arrived in the transfer gap 216, where the grippers 208 of the second drum 202B take over the sheet-shaped substrate 300 and the grippers 208 of the first drum 202A are transferred to the open position to release the substrate .

Anschließend wird das bogenförmige Substrat 300 aufgrund der gegenläufig - also im Uhrzeigersinn - angetriebenen zweiten Trommel 202B auf die Mantelfläche 206 mittels einer Aufstreifeinrichtung 230, insbesondere mit einer Bürstenleiste, aufgestreift bis es nachfolgend im Saugluftbereich 210 der zweiten Trommel 202B mittels Saugluft fixiert wird.Subsequently, due to the second drum 202B driven in the opposite direction, i.e. clockwise, the arcuate substrate 300 is slipped onto the lateral surface 206 by means of a wiping device 230, in particular with a brush strip, until it is subsequently fixed in the suction air area 210 of the second drum 202B by means of suction air.

Anschließend wird die zweite Trommel 202B weiterverdreht und das bogenförmige Substrat 300 auf seiner zweiten Substratseite mit der zweiten Druckeinrichtung 250B bedruckt, bevor es an der Bogenablage 402 für die weitere Verarbeitung abgelegt wird.The second drum 202B is then rotated further and the sheet-shaped substrate 300 is printed on its second substrate side with the second printing device 250B before it is deposited on the sheet depository 402 for further processing.

BEZUGSZEICHENLISTEREFERENCE LIST

200200
DruckvorrichtungPrinting device
202A202A
erste Trommelfirst drum
202B202B
zweite Trommelsecond drum
204204
TrommellängsachseDrum longitudinal axis
206206
MantelflächeOuter surface
208208
GreiferGrapple
210210
SaugluftbereichSuction air area
212212
BefestigungsstangeMounting rod
214214
Hebellever
216216
ÜbergabespaltTransfer gap
218218
SchwenkhalterungSwivel mount
220220
SchalteinrichtungSwitching device
222222
LaufrolleCaster
224224
SchaltgliedSwitching element
226226
TrommelkulisseDrum backdrop
230230
AufstreifeinrichtungOpener
232232
Motorengine
234234
StreifenStripes
240240
Abschnitt (Saugluftbereich)Section (suction air area)
242242
KolbenstangePiston rod
244244
FührungsnutGuide groove
246246
FührungsausnehmungGuide recess
248248
HaltelappenHolding tabs
250A250A
erste Druckeinrichtungfirst printing device
250B250B
zweite Druckeinrichtungsecond printing device
300300
SubstratSubstrate
302302
erster Substratbereichfirst substrate area
304304
zweiter Substratbereichsecond substrate area
400400
BogenanlegerSheet feeder
402402
BogenablageSheet deposit

Claims (14)

  1. A printing device (200) for printing a sheet-like substrate (300), having a drum (202A, 202B) which can be driven in rotation about a drum longitudinal axis (204) and on the lateral surface (206) of which at least one sheet-like substrate (300) can be fixed, at least in certain regions by means of at least one gripper (208) for fixing the sheet-like substrate (300) to a first substrate region (302) and by means of a suction air provided by a suction air region (210) of the drum (202A, 202B) for fixing the sheet-like substrate (300) to a second substrate region (304), and with a printing facility (250A, 250B) arranged radially with respect to the drum (202A, 202B), wherein the at least one gripper (208) is mounted on a mounting rod (212) extending parallel to the longitudinal axis (204) of the drum, the mounting rod (212) being adjustable by means of a lever (214) between a first pivoted position in which the at least one gripper (208) is in an open position and a second pivoted position in which the at least one gripper (208) is in a closed position characterized in that
    the lever (214) can be actuated pneumatically or hydraulically by means of a pressure means, and in that the mounting rod (212) is rotatably mounted on a pivoting support (218) which can be adjusted between a raised position, in which the mounting rod (212) projects beyond the lateral surface (206) of the drum (202A, 202B), and a lowered position, in which the mounting rod (212) is arranged at least flush with the lateral surface (206) of the drum (202A, 202B).
  2. The printing device (200) according to claim 1, wherein there are two of the drums (202A, 202B) which are aligned with each other such that a transfer gap (216) is formed therebetween for transferring the sheet-like substrate (300) from a first of the drum (202A) to a second of the drum (202B).
  3. The printing device (200) according to claim 2, wherein a second printing facility (250B) is arranged radially with respect to the second drum (202B).
  4. The printing device (200) according to claim 2 or 3, wherein the at least one gripper (208) of the mounting rod (212) of the first drum (202A) is arranged offset with respect to the at least one gripper (208) of the mounting rod (212) of the second drum (202B).
  5. The printing device (200) according to any one of claims 1 to 4, wherein a plurality of mounting rods (212) with grippers (208) are distributed around the circumference of the drum (202A, 202B) and a number of suction air areas (210) corresponding to the number of mounting rods (212) are provided.
  6. The printing device (200) according to any one of claims 1 to 5, wherein the suction air region (210) is arranged only in regions on the lateral surface (206) of the drum (202A, 202B) at a predetermined distance from the at least one gripper (208).
  7. The printing device (200) according to any one of claims 1 to 6, wherein the pivoting support (218) is associated with a roller (222) configured to interact with a cam or a run-up or a guide bar such that the pivoting support (218) is displaced between its raised position and its lowered position.
  8. The printing device (200) according to any one of claims 1 to 7, wherein the drum (202A, 202B) comprises at least one switching device (220) configured to adjust the suction air region (210) only at predetermined angular positions or only within a predetermined range of angular positions of the drum (202A, 202B) between an active configuration providing suction at the lateral surface (206) and an inactive configuration inhibiting suction at the lateral surface (206).
  9. The printing device (200) according to claim 8, wherein the switching device (220) is guided in a drum gate (226), and wherein the switching device (220) is associated with a switching member (224) configured to interact with a control cam or start-up or guide bar such as to adjust the suction air region (210) between the active configuration and the inactive configuration.
  10. A Method for printing a sheet-like substrate (300) with a printing device (200) according to one of claims 1 to 9, characterized by the steps:
    - Providing the sheet-like substrate (300) by means of a sheet feeder (400),
    - Rotating the drum (202A, 202B) about its longitudinal drum axis (204) and pivoting the mounting rod (212) to the first pivot position thereby moving the at least one gripper (208) to the open position,
    - gripping the sheet-like substrate (300) at a first substrate region (302) by means of the gripper (208) when the mounting rod (212) is pivoted into the second pivoted position, whereby the at least one gripper (208) is brought into the closed position,
    - further rotating the drum (202A, 202B) and fixing the sheet-like substrate (300) to the lateral surface (206) of the drum (202A, 202B) at a second substrate region (304) by means of the suction air provided by the suction air area (210), and
    - transporting the sheet-like substrate (300) to a printing facility (250A, 250B) by further rotating the drum (202A, 202B) and printing the sheet-like substrate (300) on a first substrate side.
  11. The method according to claim 10, wherein the sheet-like substrate (300) between the first substrate area (302) fixed by the at least one gripper (208) and the second substrate region (304) fixed by the suction air area (210) is spread onto the lateral surface (206) of the drum (202A, 202B) by means of a spreading device (230).
  12. The method according to claim 10 or 11, wherein first the sheet-like substrate (300) is gripped by means of the at least one gripper (208), and wherein subsequently in time the suction air region (210) is adjusted from an inactive configuration preventing the suction power at the lateral surface (206) into an active configuration providing a suction power at the lateral surface (206) for subsequently in time fixing the second substrate region (304).
  13. The method according to any one of claims 10 to 12, wherein the drum (202A) is further rotated after printing on the first substrate side, and wherein the sheet-like substrate (300) is transferred to a second drum (202B) in a transfer gap (216) and printed on a second substrate side by means of a second printing facility (250B).
  14. The method according to any one of claims 10 to 13, wherein the sheet-like substrate (300) is delivered to a sheet deposition device (402) after printing the first substrate side or after printing the second substrate side.
EP19202664.9A 2018-10-15 2019-10-11 Printing device and method for printing a sheet-like substrate Active EP3643507B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018125390.7A DE102018125390B4 (en) 2018-10-15 2018-10-15 PRINTING APPARATUS AND METHOD FOR PRINTING A SHEET-SHAPED SUBSTRATE

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EP3643507A1 EP3643507A1 (en) 2020-04-29
EP3643507B1 true EP3643507B1 (en) 2021-12-01

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CN113911730B (en) * 2021-10-13 2023-03-14 潍坊新松机器人自动化有限公司 Turning-angle type thin plate carrying robot

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US4660825A (en) 1979-07-26 1987-04-28 Ricoh Company Ltd. Sheet clamping device
DE10312870A1 (en) * 2002-07-16 2004-02-26 Ebe Hesterman Digital printing machine for sheet fed printing for first impression and verso printing of packaging materials with satellite arrangement of printing units for up to seven colors and sheet fed gripper system
US20090035046A1 (en) * 2007-07-31 2009-02-05 Belbey Jason S Print drum
JP2009046295A (en) 2007-08-23 2009-03-05 Brother Ind Ltd Image recording system
JP5148363B2 (en) 2008-05-13 2013-02-20 富士フイルム株式会社 Image forming apparatus and maintenance method
JP5350933B2 (en) 2009-07-31 2013-11-27 富士フイルム株式会社 Medium fixing device and image forming apparatus
JP5335040B2 (en) * 2011-07-22 2013-11-06 富士フイルム株式会社 Image forming apparatus and image forming method
JP5543564B2 (en) * 2011-12-27 2014-07-09 富士フイルム株式会社 Inkjet recording device
EP2657035B1 (en) 2012-04-24 2016-09-07 Komori Corporation Digital printing apparatus
US20160279950A1 (en) 2013-06-28 2016-09-29 Konica Minolta Inc. Image Forming Device
CN105172387A (en) * 2015-08-19 2015-12-23 江苏昌昇集团股份有限公司 Two-sided ink-jet printer
DE102016207398B3 (en) 2015-09-09 2016-08-18 Koenig & Bauer Ag Machine arrangement for the sequential processing of a plurality of arcuate substrates each having a front side and a rear side
DE102016221192A1 (en) 2016-10-27 2018-05-03 Bundesdruckerei Gmbh Apparatus and method for printing an arcuate substrate

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EP3643507A1 (en) 2020-04-29
DE102018125390B4 (en) 2023-11-16

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