EP3201000B1 - Einrichtung zum codieren von druckbogen in einer bogendruckmaschine - Google Patents

Einrichtung zum codieren von druckbogen in einer bogendruckmaschine Download PDF

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Publication number
EP3201000B1
EP3201000B1 EP15770551.8A EP15770551A EP3201000B1 EP 3201000 B1 EP3201000 B1 EP 3201000B1 EP 15770551 A EP15770551 A EP 15770551A EP 3201000 B1 EP3201000 B1 EP 3201000B1
Authority
EP
European Patent Office
Prior art keywords
sheet
printing
printed
printed sheets
fed
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
EP15770551.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3201000A1 (de
Inventor
Olga MARTIN
Holger Wiese
Hans-Bernd Jäger
Edgar Werber
Christian Schlegel
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.)
Manroland Sheetfed GmbH
Original Assignee
Manroland Sheetfed 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.)
Filing date
Publication date
Application filed by Manroland Sheetfed GmbH filed Critical Manroland Sheetfed GmbH
Publication of EP3201000A1 publication Critical patent/EP3201000A1/de
Application granted granted Critical
Publication of EP3201000B1 publication Critical patent/EP3201000B1/de
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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/007—Apparatus or machines for carrying out printing operations combined with other operations with selective printing mechanisms, e.g. ink-jet or thermal printers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/46—Printing units for inserting latest news
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/44—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements
    • B41J2/442—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements using lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00—Feed tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00—Feed tables
    • B65H11/002—Feed tables incorporating transport belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/24—Feeding articles in overlapping streams, i.e. by separation of articles from a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/20—Controlling associated apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing

Definitions

  • the invention relates to a device for coding in a sheet-fed printing press according to the preamble of claim and a method according to the preamble of claim 10.
  • sheetfed presses increasingly find pressure-free printing devices use, preferably with the customization of printed products produced by offset printing For example, barcodes, numbering or other markings is used.
  • Such printing formless printing devices are also referred to as non-impact print (NIP) printing devices and can be embodied, for example, as inkjet printing devices which have at least one inkjet print head, wherein the or each inkjet print head according to the so-called continuous inkjet principle, The drop-on-demand inkjet principle, the thermal inkjet principle or any other inkjet principle can work.
  • the pressure-formless or NIP printing devices can also be designed as laser printing devices.
  • a sheet-fed printing machine in which a designed as an inkjet printing device or as a laser printing device, pressure-free printing device is integrated in an offset printing unit of the sheet-fed press.
  • the pressure-formless printing device with respect to a sheet-guiding impression cylinder in the area after the passage of sheet is arranged by a pressure gap formed by the impression cylinder and a blanket cylinder.
  • the printing machine according to DE 197 04 003 A1 In particular, the printing of printed sheets with a high rigidity in the area of the inkjet printing device or laser printing device is problematic.
  • Another sheet-fed press with a built-in pressure-free printing device is from the DE 195 14 259 A1 known, the pressure-formless printing device seen in the transport direction of the sheet seen behind the last offset printing unit and in the transport direction of the sheet seen before a boom of the sheet-fed press integrated into the same according to this prior art.
  • a sheetfed press known.
  • the sheet-fed press is equipped with a sheet feeder for the supply of printed sheets and one or more printing units for printing the sheets with a static, identical for all sheets printed image.
  • at least one pressure-formless printing device for printing on the printed sheet is further integrated with a print image that varies from sheet to sheet.
  • This one or each of these pressure-free printing devices is integrated in the sheet feeder in the sheet-fed press.
  • a printed sheet can be printed on a feeder table in its entire surface area.
  • sensors are provided which detect the front and side edges of the sheet. As a result, the sheet position is defined and it can be made possible with respect to the positioning of the print pattern targeted static or variable from sheet to sheet printing by means of pressure-free printing device.
  • an installation position is preferred over an arranged before the sheet alignment investment sheet in a trained as a shed feeder sheet feeder. Furthermore, an installation position above a forward conveying direction in the contact sheet and serving the sheet feed conveyor table is preferred in a sheet feeder designed as a single sheet feeder.
  • a sheet-fed press with a feeder, at least one printing unit and / or coating unit for printing a static, identical for all printed sheet image, with a boom and at least one integrated in the sheet-fed press formless printing device for printing a variable from sheet to sheet variable print image.
  • the pressure-free printing device is provided in the area of sheet leading cylinder, wherein the sheet leading cylinder for safe guidance of the sheet in the area of the printing devices are provided with adhesive means for planar flat guiding the sheet.
  • a sheet-fed printing machine with a feeder for feeding sheet to be printed, with at least one printing unit and / or coating unit for printing the sheet with a static, identical for all sheets printed image, with a boom for discharging printed sheet from the sheetfed press, and with at least one inkjet printing device integrated in the sheet-fed printing machine is provided for printing a dynamic, changeable printed image.
  • the or each inkjet printing device is controllably integrated in the sheet-fed printing machine depending on process parameters or operating parameters or order parameters or quality parameters and can be assigned to a feed table.
  • WO 2010/086265 A1 Another sheetfed press is known.
  • the improvement of the transfer process is achieved in that for applying the adhesive for the film transfer at least one inkjet printing device is arranged in the transport direction of the sheet before the coating unit.
  • the inkjet printing device can be assigned to a sheet fed printing machine upstream investment table.
  • document WO-A-2010/086204 discloses a sheet-fed press according to the preamble of claim 1.
  • the present invention has the object to provide a novel device for simple, flexible and secure coding of printed sheets in a sheet-fed press.
  • the or each pressure-formless printing device is integrated into the sheet-fed press in the area of the sheet feeder in such a way that each printed sheet can be coded by an upper side in a selectable range.
  • the or each pressure-formless printing device is integrated into the sheet-fed press in the area of the sheet feeder such that each printed sheet can be coded from an underside in a selectable area.
  • the or each pressure-formless printing device is integrated in the sheetfed press in the sheetfed press that each sheet can be encoded in a selectable area, wherein a controller detects in connection with sensors the presence of sheet and the time to start a coding or numbering and controls.
  • a controller detects in connection with sensors the presence of sheet and the time to start a coding or numbering and controls.
  • the coding or numbering is manually or automatically activated for production, after which the release of the pressure by a pressure-free printing device only takes place when a sensor has reported the presence of sheet in the printing area and or the presence of color-correct sheet in the printing area.
  • another sensor must have reported a settable zero or start time for each of the sheets depending on the length of the print format.
  • the printing of printed sheets with the help of or any pressure-free printing device at a time the before printing the sheet in which is preferably designed as an offset printing units printing units of the sheet-fed press.
  • the printing formless printing devices can be arranged with a small distance to the sheet without rolling on the sheet to be printed Sheet guide rollers are required, which on the one hand affect the print quality and on the other hand limit the printable in the range of or any pressure-free device width of the sheet.
  • a method according to the invention when inserting printed sheets into a sheet-fed printing press uses one or more printing-form-free printing devices in conjunction with a ribbon feeder which processes a shingled stream of printed sheets on a conveyor table. If the printing devices are assigned to the printing sheet on the conveyor table in a printing position, wherein they can be assigned from below in the scale flow exposed rear sheet ends of the sheet from the top or the imbricated stream from below exposed front end of the sheet, the printing devices by manual or automatic control for production activated. The release of the pressure by means of the printing device takes place when a sensor reports the presence of printed sheets and / or the presence of color-correct printed sheet in the printing area and if sensor reports a dependent on the length of the printing format zero or start time for the passage of each of the sheet.
  • At least one characteristic is stored in a control device of the pressure-free printing device, which curve is formed as a function of the printing material parameters such as sheet format, sheet thickness, grammage, fiber direction and / or stiffness of the printed sheet.
  • the pressure-formless printing device can be controlled on the basis of these characteristics and there is provided a data connection of the control device for reading in order data from a control of the sheet-fed press.
  • the or each pressure-formless printing device can be embodied as an inkjet print head or laser printing device which is arranged to print the printed sheets in the imbricated stream over the entire exposed format width and / or exposed format length from the uppermost upper side.
  • each inkjet print head or laser printer device can be arranged to print printed sheets in the imbricated stream over the entire exposed format width and / or exposed format length, wherein the inkjet printheads or laser printing devices comprise one or more, at least partial regions of associated with the conveyor table lying underside of the sheet releasing openings in the conveyor table.
  • a plurality of successively arranged inkjet print heads or laser print heads can be provided, viewed side by side and / or in the transport direction of the print sheet, transversely to the transport direction of the print sheet, which are interconnected on the control side.
  • printing devices can be removable from the sheet-fed printing machine and usable at another sheet-fed printing machine or within the same sheet-fed printing press at different installation positions.
  • a drying device and / or a suction device can be arranged downstream of the pressure-formless printing devices in each case in the transport direction of the printed sheet.
  • pressure-formless pressure devices can be arranged pivotably in the region of the sheet feeder with respect to the conveyor table.
  • Fig. 1 shows a schematic representation of a sheet-fed printing machine 10, wherein the sheet-fed printing machine 10 comprises a sheet feeder 11, a plurality of printing units 12 formed as offset printing units, a printing unit 12 downstream of the printing unit 12 and a downstream of the coating unit 13 boom 14.
  • the sheet feeder 11 is used for feeding sheet to be printed in the first of the printing units 12 of the sheet printing machine 10 and comprises a sheet feeder 20 with a feeder stack and a sheet separating device 23, a conveyor table 19 and an abutment plate 22 in conjunction with a pregripper 21.
  • Die Druckbogenish Moves 12 and the coating unit 13 moves and printed there with a print sheet for all the same or unchanging and thus static printed image.
  • the sheet-fed printing machine 10 In the area of the arm 14, printed signatures are discharged from the sheet-fed printing press to form a delivery stack 15.
  • the sheet-fed printing machine 10 In the illustrated embodiment of the Fig. 1 the sheet-fed printing machine 10 according to the invention is designed as a so-called turning machine, which serves the double-sided printing of printed sheets in the so-called perfecting.
  • a arranged between the first two printing units 12 transfer cylinder is this formed as a turning cylinder 16.
  • At least one pressure-formless printing device is integrated, which is preferably the printing of the printed sheet with a static or from sheet to sheet variable print image serves.
  • the or each pressure-formless printing device is integrated in the sheet feeder 11 in the sheet-fed press 10, wherein in Fig. 1 possible installation positions 17 and 18 are shown schematically for the or each pressure-formless printing device. In both installation positions 17 and 18, the printed sheets are printed in the area of the sheet feeder 11 via the or each pressure-formless printing device from above.
  • the sheets When transporting the printing sheet along the conveyor table 19, the sheets are flat or flat. It can be maintained a small distance between the or each pressure-free printing device and the sheet and thus a high print quality can be provided.
  • the sheet feeder 11 is formed as a so-called shingled feeder for conveying a scale flow S of sheet in the sheet running direction R on the conveyor table 19.
  • the installation position 17 for the printing device above an in Fig. 1 and 2 symbolically illustrated investment sheet 22 of the sheet-fed printing machine 10 are selected on the first of the printing units 12.
  • the last printed sheet of the scale flow S is present individually, is aligned to the front and side edge and detected by a so-called pre-gripper 21 and the first of the printing units 12 of the sheet-fed printing machine 10. Since in this case the printed sheets on their surface are completely freely accessible, they can be printed by the printing formless printing device over the entire format width and format length with a static or from sheet to sheet variable print image.
  • a pressure-formless printing device in the installed position 18 above the conveyor table 19 integrated into the sheet feeder 11.
  • FIG. 2 the arrangement according to the invention is shown in overview. It shows the integration of a formed as an inkjet printhead 1 pressure-free printing device in the area designed as a suction belt conveyor table 19.
  • the chosen embodiment is based on the fact that regardless of the format length of the sheet on the conveyor table 19 by the Unterschuppung the sheet in the shingled stream S always the The end of the sheet or the back flake length of each print sheet is visible from above and therefore also printable. Therefore, a corresponding control of the inkjet printhead 1 is required, which takes place via a controller 6.
  • a printhead mount above the conveyor table 19 is required for the inkjet printhead 1 also a printhead mount above the conveyor table 19 is required. This can be designed to be static, displaceable or pivotable, so that the inkjet print head 1 can be positioned for production purposes and displaced from the working space for setup and maintenance purposes.
  • a product sensor 2 for detecting the presence of printed sheets on the conveyor table 19 can be arranged above or below the conveying surface of the conveyor table 19 as a reflection light scanner, laser probe, color scanner or other sensor recognizing a substrate on a receiving device for mounting.
  • a rotary encoder 3 is provided, which may have a measuring wheel with rubber studs, so that, if necessary, the forward movement of the printed sheets in the scale flow S can be identified and analyzed.
  • a sensor 4 is further provided for a pressure release.
  • This one is in FIG. 2 the sheet separating device 23 (also referred to as suction head) assigned in the sheet feeder 20 above the feeder pile.
  • the sensor 4 is connected to one or more elements of the sheet separating device 23 and / or the sheet conveying via the conveyor table 19 in connection.
  • an input / output connection element is provided for mounting approximately in a control cabinet of the first of the printing units 12.
  • a printhead controller 6 with a device holder for operable positioning in the area of the sheet feeding device 11 is arranged. This can preferably take place in the area of operating devices of the sheet-fed printing machine 10 of the sheet feeder 20, which are often provided parallel to the conveyor table 19.
  • a control device 7 for operating the pressure-free printing device from an operating position on the boom 14 of the sheet-fed printing machine 10 with circuit for starting the inkjet printhead 1 and a control diode for indicating the activity or operational readiness of the inkjet printhead 1 may be provided.
  • FIG. 3 the functionality of the inkjet print head 1 in conjunction with the sheet feeder 11 is shown in more detail.
  • the start of the sheet numbering or coding can be triggered by a so-called good sheet counter or by means of another corresponding signal.
  • the programming can also be done by specifications when setting up the sheet-fed press 10.
  • the numbering or coding may be set via the function of an arc inspection 24 in relation to the printed sheet. In a log of the sheet inspection 24 while the consecutive number can be displayed in the inspection result.
  • FIG. 3 the following device in connection with the sheet feeder 20, the sheet separating device 23, both of which are not shown here, but at least provided with the conveyor table 19.
  • An inkjet printing head 1 is provided in a central extension region above the conveyor table 19. In this case, the inkjet printhead 1 is directed approximately at the middle region of the underlying sheet of the sheet stream S.
  • format lengths of the print sheets which can be processed in a single sheet-fed press can for example be between values of 340 mm and 740 mm.
  • the printing by the inkjet print head 1 should be triggered automatically and all printed sheets should be printed in the scale flow S, regardless of their format length. A manual intervention of the printer should be avoided.
  • a sensor 2 is arranged in the region of the inkjet print head 1 above (or also below a control opening in the conveyor table 19) of the conveyor table 19 and observes whether a print sheet is present under the inkjet print head 1. If this is the case, the sensor 2 outputs an "arc" signal.
  • a sensor 2 a simple optical reflection sensor, a laser sensor, a color sensor or other sensor can be used for material detection, which is arranged above the conveyor table 19 and the surface of the conveyor table 19 is arranged scanning and an opening in the conveyor table 19 or a dark Surface is assigned to the conveyor table 19.
  • Sensor 2 is required in all modes, manual or automatic.
  • a trained as a wheel encoder rotary encoder 3 is assigned to a conveyor belt 9 of the conveyor table 19 below the conveyor table 19.
  • the speed modulation of the sheet transport from 32% to 168% (referred to as so-called sheet slowdown) per scale path is recorded synchronously here and also passed on to the inkjet print head 1, so that this is automatically taken into account.
  • the inkjet printhead 1 is mounted on a cross member provided in the sheet feeder 20 or placed above the conveyor table 19, and can be positioned longitudinally and transversely to the scale flow S. In the sheet transport direction R, however, the position can be provided invariably.
  • the zero position of each of the incoming on the conveyor table 19 printed sheet is reproduced by a sensor 4, which is assigned in this case a drive element of a conveyor belt 9 of the conveyor table 19.
  • the sensor 4 can also be assigned to the sheet feeder 20 and in particular the sheet separating device 23.
  • the inkjet printhead 1 is driven by a combination of the signals from the sensors 2 and 4.
  • a numbering or coding on the exposed end of a printed sheet is then carried out when the sensor 2 reports the presence of a printed sheet and when the sensor 4 emits the zero position signal for the sheet transport.
  • the zero position signal depends on the format length of the printed sheets and is adjusted to this format length when setting up a print job. This setting can be done automatically based on the format lengths known in the sheet-fed printing press 10.
  • the Unterschuppung is set in a sheet-fed press 10 in their length, the case occurs, from a certain larger format length is a multiple coverage of sheet. Then the double numbering or coding of the first printed sheet should be avoided. This can be done by metrological means or when setting up the sheet-fed press 10 by appropriate settings.
  • pre-sheet is used to set up a print job
  • the headers can be counted, but not printed with a numbering / coding.
  • the support sheets are but - about the documentation. labeled with a numbering / coding, such as the order number and a date.
  • the support sheets can be counted and marked in each case after 500 sheets with a strip.
  • a color sensor for detecting differently colored flow sheet can be used.
  • a function for defining a plurality of features can be defined, which are linked to the output signal of the color sensor.
  • the corresponding printed sheet could be numbered / coded, whereas with a colored or red substrate, for example, a non-printing meter can be stored. Both counters are displayed on the print head controller 6.
  • the dependence of the format length applies the following example of a specific sheet-fed press 10: With a format length of up to 568 mm, a printed sheet is always printed once. From an arc length of 568 mm, an additional sensor can be used so as not to double-label the first printed sheet. In such a case, a manual preselection is possible. In order to remain flexible, however, an additional sensor should be installed, which is activated in formats from 568 mm in length. Double labeling of the first sheet should be avoided.
  • this embodiment offers the user a great advantage ease of handling, the cartridges are easily replaceable and interchangeable, and moreover, is also a minimum cleaning effort, since the cartridges can be cleaned very easily and quickly.
  • FIG. 4 the connection of the pressure-free printing device is shown.
  • the inkjet printhead 1 is coupled to a control unit (printhead controller) 6, from which all the on / off, timing, duration, and print pattern control signals are output to the inkjet printhead 1.
  • control unit printhead controller
  • the control unit 6 is also provided with input / output devices. There, the printing process can be enabled or disabled on the control unit 6. Furthermore, output data for printing can be displayed on the control unit 6, such as counter readings.
  • control unit 6 of the rotary encoder / rotary encoder 3 is assigned, which determines the conveying speed of the scale flow S respectively the individual sheets on the conveyor table 19 based on the speed of the / the conveyor belts 9. With this data, the synchronization of the printing operation of the inkjet printing head 1 is made at the speed of the sheet on the conveyor table 19.
  • the control unit 6 is connected to the control cabinet of the first of the printing units 12, for example for power supply and control technology coupling with the machine control. Therefore, the activation and blocking of the inkjet printhead 1 in the printing process can also take place via the machine control of the sheet-fed printing press 10. Furthermore, the data output for logging the printing process on the inkjet print head 1 can also take place via a control station of the sheet-fed printing press 10. Thus, print contents of the inkjet print head 1, counter readings to the processed printed sheet or information on the process status can be transferred from the control unit 6 to the machine control for display on the control desk or for further processing.
  • an input / output device is arranged as a circuit board 5, to which the other devices are connected to the controller.
  • the senor 2 is connected to the input / output board 5 as a product sensor for the presence of printed sheets.
  • the senor 8 is connected to the input / output board 5 for a color detection of the present printed sheet.
  • the senor can also be connected to the input / output board 5 as a sensor 4 for outputting zero or start signals or for detecting the scale position of the scale flow S passing through the conveyor table 19.
  • the sensor 4 is referred to here as a sensor on the suction head, where he, as already stated, also be connected to sheet conveying means such as the conveyor table 19 and can work together.
  • an on / off switch 7 for the operation of the inkjet printhead 1 from the arm 14 is connected to the input / output board 5.
  • the sensor 4 As a product sensor is detected whether ever sheet present in the inkjet printhead 1. Another query takes place with regard to the time for numbering / coding. This time is determined by the sensor 4.
  • the sensor 4 outputs a so-called single-turn signal, which defines in relation to the transport position of the sheet a cyclically recurring for each sheet zero or starting point. This zero or start point can be shifted as needed by adjusting the sensor 4 relative to the actual machine angle zero. It is shifted in practice so far that this single-speed signal is always output from the sensor 4, when the beginning of a free area of each of the printing sheets conveyed in the shingled stream S via the conveying table 19 is opposed to the inkjet printing head 1.
  • the inkjet printhead 1 is released and he prints the pattern defined in the control unit on the sheet.
  • a sensor 8 is used for color detection, this can exert an additional blocking function.
  • the control can be provided that when recognizing certain colors of a sheet no numbering / coding or a differentiated other coding should be made or that an encoding example, should be made only on white sheet.
  • the blocking function corresponds in effect to the function of the sensor 2, which detects the presence of printed sheets.
  • this corresponds to a behavior according to which the sensor 8 for color detection simulates the absence of printed sheets and thus prevents printing of the inkjet print head 1.
  • the connection of the inkjet printhead 1 is also possible from the boom 14 of the sheet-fed printing press 10.
  • the printer therefore, if desired, the function numbering / coding basically turn on when all machine functions are ensured and the printing process is set up ready.
  • Such a connection can also take place, for example, when a good-sheet counter is switched on, the latter - possibly in conjunction with a device for sheet inspection 24 - registering the production of salable printed sheets.
  • the device according to the invention can therefore be summarized in its function as follows:
  • the numbering / coding facility allows each sheet to be individually numbered, inscribed or encoded for internal documentation and sheet traceability.
  • An inkjet printhead 1 is integrated for this purpose above the conveyor table 19 of a sheet feeder 11 for a sheet-fed press 10.
  • the signatures are fed through the conveyor table 19 (e.g., suction belt table) below the inkjet printhead 1 in the usual scaling as a scale flow S.
  • the inkjet printhead 1 is in the area in front of the so-called sheet system with acquisition by the pregripper 21 and is therefore not exposed to the acceleration of the sheet in the first printing unit 12.
  • the accessible area of a scale length can be individually labeled at the end of the sheet of each sheet.
  • the inkjet printhead 1 can also be positioned format variable. This is in principle necessary only in one direction transverse to the sheet transport direction R in the sheet plane, since in the sheet transport direction R any of the format length dependent area for printing by the inkjet printhead 1 can be controlled by signal technology.
  • the positioning of the inkjet print head 1 transverse to the sheet travel direction R and parallel to the sheet plane can be done manually or automatically.
  • An automated positioning is carried out by means of an actuator which is driven from data that are recorded or read with respect to the sheet width in the order setting in the machine control.
  • the positioning may in this case also be coupled with an adjustment of the position of a page mark, the latter being associated with the sheet side edge of the printed sheet and being arranged in the sheet feed device 11 and / or an abutment sheet 22 arranged there.
  • the printed sheet number can be displayed in the inspection error log. This means that every faulty sheet can be sorted out of the stack afterwards.
  • the printing is usually monochrome and is to be matched with regard to the printing ink used on the substrate.
  • the printing ink is written in cartridges written on the inkjet printhead 1.
  • the triggering of the inkjet printhead 1 for triggering the printing of the codes or numbering can be carried out starting from an activation of a good sheet counter or by manual operation or according to a predetermined production scheme or by automatic control after a monitored run a number of flow sheets.
  • the activation for controlling the printing process should also be dependent on the inkjet print head 1 being in a printing position in association with the conveyor table 19. Only in the printing position, the functionality of the sensors 2 and 8 for the control of printing by means of the inkjet printhead 1 can be effectively used.
  • the printing position of the inkjet printhead 1 can therefore be detected with a position detection sensor on the pivot arm 27 or the traverse 26 or on the inkjet printhead 1 itself. Is one of the sensors 2, 8 arranged in mechanical coupling together with the inkjet print head 1 in the sheet feeder 20, then the printing position can also be determined via the sensors 2 and / or 8.
  • the layout of the numbering / coding to be printed on the sheet can be easily created on any PC or even directly on the control unit 6 of the inkjet printhead 1.
  • the inkjet printhead 1 When changing the format of the sheet after a job change, the inkjet printhead 1 must be positioned in the sheet plane transverse to the sheet transport direction R on to be printed areas of the scale flow S. This can initially be done manually by the inkjet print head 1 on a traverse or with appropriate, already mentioned above facilities for detecting sheet position and sheet format are also provided automatically controlled.
  • the position of the zero or start signal is to be reset. This adjustment is made by adjusting the signal point of the sensor 4 to the beginning of the free surface of each signature in the scale flow S, which results from the reference to the change in format length. Also, this setting can be automated because the necessary data for the sheet size, sheet position and location of the numbering / coding on the sheet before the start of printing are known.
  • a facility for reading database contents may be provided.
  • the type, content and location of the numbering / coding in a database can be stored with reference to certain products.
  • these data can be transmitted to a sheet-fed printing machine 10 with an inkjet printhead 1 via a conveyor table 19 of the sheet feeder 11 and used there for setting.
  • the inkjet printhead 1, in its setting to the scale flow S, the sheet may be formed so that it is placed on a sliding member in the manner of a carriage on the sheet surface. Thus, a constant distance of the inkjet printhead 1 is achieved to the surface of the sheet.
  • the conveying speed of the printed sheets can change when conveying the printed sheets via the conveyor table 19 to the sheet-fed printing press, preferably at least one characteristic curve is stored in the control unit 6 of the inkjet printing head 1, which depends on substrate parameters such as the grammage and / or the fiber direction and / or or the stiffness of the sheet is configured.
  • the inkjet printhead 1 is then driven based on one of these characteristics.
  • the characteristic curves are determined in advance for printed sheets from different substrates.
  • a plurality of juxtaposed inkjet printheads 1 and seen in the transport direction of the sheet can be seen integrally arranged several inkjet printheads 1 arranged one behind the other and array or matrix-like associated with each other and preferably interconnected on the control side.
  • the number of inkjet printheads 1 required transversely to the printing direction is defined primarily by the desired total printing width relative to the given printing width of each inkjet printhead 1 used.
  • the required number of inkjet printheads 1 in the sheet transport direction R of the sheet is, however, determined by the fact that the desired printing speed is greater than the given maximum printing speed of a single inkjet printhead 1 and in that several inks on the sheets using the inkjet printheads 1 should be applied. Furthermore, the number of inkjet printheads 1 in the sheet transport direction R of the printing sheet defined by the desired print resolution in relation to the given print resolution of each individual inkjet printhead 1 used.
  • the or each inkjet printhead 1 is removable from the sheetfed press, in such a way that the or each inkjet printhead 1 can be used on a different sheetfed press or within the same sheetfed press at different mounting positions.
  • the or each inkjet printhead 1 has a supply side, namely mechanical or printing ink side, and a control side, namely electrical or electronic, interface, via which the or each inkjet printhead 1 to an ink supply system and / or to a control device of respective sheet-fed press can be connected.
  • the printing formless printing device can preferably be followed by a drying device or hardening device and / or a suction device, the drying device drying the ink applied via the inkjet printing head 1 and the suction device sucking solvent vapors out of the inkjet printing head 1 applied ink is used.
  • a camera 25 may be connected to the inkjet printhead 1, which is directed onto the print area downstream of the inkjet printhead 1 and previously swept by the inkjet printhead 1. By means of the camera 25 so the printed codes or numbering can be detected and identified. This ensures that each sheet to be processed is numbered or coded, that there are no gaps in numbering or coding, and that there are no duplicate numbering or coding in the sheet to be processed in sequence.
  • the inkjet printhead 1 is pivotally mounted in the region of the sheet feeder 20 or the conveyor table 19, preferably on a Schenkarm 27, the direct or via crossbar 28 on a side frame of the sheet feeder 20 or the first of the printing units 12 attacks.
  • the conveyor table 19 and the sheet feeder 20 are freely accessible for setup and the inkjet printhead 1 can be easily moved and maintained.
  • an inkjet printhead 1 ' can also take place in an association with respect to a lower side U of the conveyor table 19. Then, the inkjet printhead 1 'is directed toward the beginning of the sheet in the imbricated flow S successive sheet, since at the time of Unterschuppung the beginning of a sheet of a subsequent sheet is below the sheet end of the leading sheet. For printing the codings or numbering of the signatures by means of the inkjet print head 1 ', one or more openings 28 are then provided in the conveyor table 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Ink Jet (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
EP15770551.8A 2014-10-02 2015-09-30 Einrichtung zum codieren von druckbogen in einer bogendruckmaschine Active EP3201000B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014114387 2014-10-02
DE102015116030.7A DE102015116030A1 (de) 2014-10-02 2015-09-23 Einrichtung zum Codieren von Druckbogen in einer Bogendruckmaschine
PCT/EP2015/072605 WO2016050866A1 (de) 2014-10-02 2015-09-30 Einrichtung zum codieren von druckbogen in einer bogendruckmaschine

Publications (2)

Publication Number Publication Date
EP3201000A1 EP3201000A1 (de) 2017-08-09
EP3201000B1 true EP3201000B1 (de) 2019-05-01

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Application Number Title Priority Date Filing Date
EP15770551.8A Active EP3201000B1 (de) 2014-10-02 2015-09-30 Einrichtung zum codieren von druckbogen in einer bogendruckmaschine

Country Status (6)

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US (1) US20180126725A1 (ja)
EP (1) EP3201000B1 (ja)
JP (1) JP6698641B2 (ja)
CN (1) CN107073981A (ja)
DE (1) DE102015116030A1 (ja)
WO (1) WO2016050866A1 (ja)

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CN109572199A (zh) * 2017-09-29 2019-04-05 海德堡印刷机械股份公司 印刷机运行方法
DE102018219734A1 (de) 2018-11-19 2019-01-10 Heidelberger Druckmaschinen Ag Verbesserte Bogenführung im Anleger
CN114055937A (zh) * 2021-12-14 2022-02-18 广州市贝云科技有限公司 喷码装置
DE102022105615A1 (de) 2022-03-10 2023-09-14 Koenig & Bauer Ag Bogenverarbeitende Maschine und Verfahren zur Kennzeichnung und Nachverfolgung von Bogen
CN114314078B (zh) * 2022-03-17 2022-06-03 济南七彩印务有限公司 一种印刷品前序自动化整平装置

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Also Published As

Publication number Publication date
US20180126725A1 (en) 2018-05-10
CN107073981A (zh) 2017-08-18
DE102015116030A1 (de) 2016-04-07
JP2017533119A (ja) 2017-11-09
JP6698641B2 (ja) 2020-05-27
WO2016050866A1 (de) 2016-04-07
EP3201000A1 (de) 2017-08-09

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