EP3448682B1 - Dispositif permettant de faire se chevaucher des feuilles - Google Patents

Dispositif permettant de faire se chevaucher des feuilles Download PDF

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Publication number
EP3448682B1
EP3448682B1 EP17720450.0A EP17720450A EP3448682B1 EP 3448682 B1 EP3448682 B1 EP 3448682B1 EP 17720450 A EP17720450 A EP 17720450A EP 3448682 B1 EP3448682 B1 EP 3448682B1
Authority
EP
European Patent Office
Prior art keywords
sheet
transport
sheets
printing
substrate
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
EP17720450.0A
Other languages
German (de)
English (en)
Other versions
EP3448682A1 (fr
Inventor
Carsten Reinsch
Heinz Michael Koch
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.)
Koenig and Bauer AG
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Koenig and Bauer AG
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Filing date
Publication date
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Publication of EP3448682A1 publication Critical patent/EP3448682A1/fr
Application granted granted Critical
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Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • 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
    • B65H11/005—Suction 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/243—Suction rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/52—Stationary guides or smoothers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • B65H29/6636—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed in combination with auxiliary means for underlapping articles
    • 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
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • 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
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/228—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by air-blast devices
    • 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
    • B65H2220/00—Function indicators
    • B65H2220/01—Function indicators indicating an entity as a function of which control, adjustment or change is performed, i.e. input
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/02—Function indicators indicating an entity which is controlled, adjusted or changed by a control process, i.e. output
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/11—Function indicators indicating that the input or output entities exclusively relate to machine elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/446—Assisting moving, forwarding or guiding of material
    • B65H2301/4461—Assisting moving, forwarding or guiding of material by blowing air towards handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4471—Grippers, e.g. moved in paths enclosing an area
    • B65H2301/44712—Grippers, e.g. moved in paths enclosing an area carried by chains or bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473—Belts, endless moving elements on which the material is in surface contact
    • B65H2301/44735—Belts, endless moving elements on which the material is in surface contact suction belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/51—Cam mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/53—Articulated mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/152—Arrangement of roller on a movable frame
    • B65H2404/1523—Arrangement of roller on a movable frame moving in parallel to its axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/113—Details of the part distributing the air cushion
    • B65H2406/1132—Multiple nozzles arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/362—Means for producing, distributing or controlling suction adjusting or controlling distribution of vacuum transversally to the transport direction, e.g. according to the width of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/366—Means for producing, distributing or controlling suction producing vacuum
    • B65H2406/3661—Injectors
    • 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
    • B65H2513/52—Age; Duration; Life time or chronology of event
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/20—Volume; Volume flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/20—Avoiding or preventing undesirable effects
    • B65H2601/21—Dynamic air effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/15—Digital printing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/24—Post -processing devices
    • B65H2801/31—Devices located downstream of industrial printers
    • 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
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/226—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction rollers
    • 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
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/06—Movable stops or gauges, e.g. rising and falling front stops

Definitions

  • the invention relates to a device for shingling sheets according to the preamble of claim 1.
  • a device for shingling sheets comprising at least one blow box and a feed table, wherein a plurality of sheets in the same transport direction are successively spaced out on the feed table in a region of the blow box, with a blow nozzle in the blow box on its side facing the feed table is arranged, wherein the blowing direction of the blowing nozzle is directed parallel to the feed table against the transport direction of the sheet.
  • a sheet-fed printing machine with a feed table for conveying sheets in a shingled sequence to a first printing unit of the sheet-fed printing machine wherein a sheet to be aligned can be placed on feed marks on the feed table and a device for sheet guiding which has at least one blowing device is arranged above the shingled sequence. through which an air flow can be generated on the rear edge of the sheet to be aligned, the feed table being assigned at least one device which raises the rear edge of the sheet to be aligned, this device being located below the scaled sequence of sheets.
  • a device for guiding sheet material in a printing press is known, with a guide surface arranged below the sheet material and with nozzles arranged in zones within the guide surface, a first zone extending along the longitudinal axis of the guide surface and a second and a third zone in each case are arranged laterally from the first zone, the nozzles arranged in the first zone being formed by blowing nozzles, the blowing direction of which is essentially directed in the sheet transport direction, and the nozzles arranged in the second and third zones being formed by blowing nozzles, the blowing direction of which is essentially from the longitudinal axis of the guide surface is directed away from the side edges of the guide surface, the nozzles of the first zone being able to be blasted with air separately from the nozzles of the second and third zones.
  • a sheet-fed printing machine with a feeder for printed sheets to be printed, the feeder removing printed sheets from a stack, with at least one printing unit and / or coating unit for printing on the printed sheets, with an extension arm for discharging printed sheets, and with at least one device for corona treatment the printing sheet, to a surface tension of the printing sheet and thus wettability of the same with printing ink and / or to increase varnish, whereby a) the feeder is designed as a single sheet feeder, which separates the printed sheets lifted from the feed stack in such a way that they can be conveyed without overlap in the region of a feed table arranged downstream of the single sheet feeder, viewed in the conveying direction, b) the feed table at least comprises two conveyor systems arranged one behind the other in the conveying direction of the printed sheets, with a plurality of corona treatment devices being arranged in the region of the conveying table, with the aid of which the printed sheets on the top and underside can be subjected to a full
  • a machine arrangement for sequentially processing a plurality of sheet-like substrates, each having a front side and a rear side comprising a first printing cylinder and a second printing cylinder, with at least one first non-impact printing device printing on the front of the relevant substrate and in each on the circumference of the first printing cylinder Direction of rotation of the first printing cylinder after the first non-impact printing device is arranged in a dryer drying the front side of the substrate in question printed by the first non-impact printing device, with at least one second non-printing device printing on the rear side of the substrate in question on the circumference of the second printing cylinder.
  • a digital printing machine for sheet printing with a format-free digital printing unit in the circumferential direction, an intermediate cylinder downstream of the digital printing unit, which is at least partially coated with an elastic material, and a counter-pressure cylinder downstream of the intermediate cylinder, the counter-pressure cylinder having sheet-holding grippers and the intermediate cylinder on it Scope the gripper-receiving recesses.
  • the printing material being guided on an impression cylinder by more than 360 °, the printing material being connected to the Again, the impression side reaches the effective area of an ink application unit, from which the printing material has already been printed on an upstream impression cylinder on the face side.
  • the ink application unit can preferably be pivoted between two opposing impression cylinders, the pivotable ink application unit, e.g. B. is an inkjet printhead.
  • a device for applying opaque white or an effect ink layer is known, the effect ink layer being dried or hardened after application and then being overprinted, one or more ink jet print heads being provided within a printing machine, the ink jet or ink Print heads for applying the opaque white or effect layer is arranged directly on the printing material or indirectly via an intermediate carrier on the printing material, the transport path of the printing material before being fed to or within the printing press.
  • a sheet-fed printing machine with a feeder for feeding printed sheets into the sheet-fed printing machine, with at least one printing unit and / or coating unit for printing the printed sheets with a static print image identical for all printed sheets, with a delivery for discharging printed sheets from the sheet-fed printing machine, and with at least one printing formless printing device integrated in the sheet printing machine for printing the printing sheets with a dynamic, variable print image in particular, the or each printing formless printing device being controllably integrated in the sheet printing machine depending on process parameters or operating parameters or job parameters or quality parameters.
  • a sheet conveying device which comprises the following components: a first conveying unit which comprises a first holder which holds an edge of a sheet and conveys the sheet which is held by the first holder; a second conveyor unit comprising a second holder which has one edge holds the sheet and conveys the sheet held by the second holder; a third conveyor unit, the third conveyor unit comprising a third holder that holds the other edge of the sheet conveyed by the first conveyor unit and conveys the sheet held by the third holder; an independent drive unit that drives the first conveyor unit independently; a device drive unit that drives the entire device including the second conveyor unit and the third conveyor unit; and a control unit that controls the independent drive unit to adjust a speed at which the third conveying unit conveys the sheet in a conveying direction based on a dimension of the sheet, the first conveying unit comprising a rotatably mounted transport cylinder, and the independent drive unit an independent drive motor which drives the transport cylinder independently of a device drive system, the third conveyor
  • a sheet feeder for printing presses in which Endless tapes slide over a vacuum space so that the room is closed and the vacuum is only effective in openings (suction devices) of the tape opposite the paper stack or single sheet of paper and the sheet is thus carried along by the tapes, the tapes being made of wear-resistant steel, whereby next to and behind the suction points, there are preferably blowing openings (chambers, pipes, slots) that cause the sheet to be separated and floated by means of blowing air.
  • a device on a conveyor table preferably on a suction belt table, is known for transporting sheet material in a shingled sheet stream from a sheet feeder to a sheet processing machine, in particular a sheet-fed rotary printing press, with one or more conveyor belts, for example suction belts which can be acted upon by suction air are drivable and endlessly guided around the conveyor table, with a blowing device which, outside the guide area of the conveyor belts in the area of guide areas of the conveyor table arranged laterally and parallel to the conveyor belts, blows air under the stream of sheets, at least in the guide areas on the outside of the conveyor belts a plurality of essentially covering the entire area of the Guide areas distributed individual ventilation openings is provided and wherein a blown air supply is provided in such a way that it is at least partially coupled for ventilation openings, such that the guide areas can be acted upon essentially in partial areas or over the entire area with blown air, the ventilation openings preferably in the area of the
  • a device for braking printed sheets in the delivery of a sheet printing machine with a sheet brake working with suction air is known, the sheet brake being connected to a vacuum generator via a line system and at least one valve, so that a vacuum can be applied to the outer radius of the sheet brake in the suction area, at least a sensor for determining the position of the printed sheet and a downstream control device are arranged and the valve can be controlled by the control device as a function of the signals of the at least one sensor.
  • an inkjet printer for printing on sheet-shaped substrates having the following components: a) a printing unit transport device with at least one rotating printing unit transport belt with openings guided over rollers and a suction chamber device arranged under the printing unit transport belt, the printing unit transport belt or the printing unit transport belts being an independent drive device has or have, which impresses or impresses a speed on the conveyor belt or conveyor belts, b) an ink jet printing device arranged above the approximately horizontally guided upper drum of the printing unit transport belt, c) a transport device upstream of the printing unit transport device in the transport direction of the printing sheets / substrates with at least a revolving belt, wherein the conveyor belt or the conveyor belts has or have an independent drive device that Imprinting or imparting a speed to the conveyor belt or conveyor belts, the ratio of the speed of the printing unit conveyor belt or the printing unit conveyor belts of the printing unit conveyor device to the speed of the conveyor belt or the conveyor belts of the conveyor
  • a method for operating a sheet processing machine in which the sheets are shifted in the transport direction and treated in several processing stations, the speed of displacement of the sheets being adjustable independently of one another, the speed of the respective sheet being adapted to the processing step to be carried out in the respective processing station and the speed of the sheet is different in at least two of the processing stations.
  • the processing power of the individual processing stations can be the same during a certain period of time or the processing power of a first processing station is greater or less than the processing power of an upstream or downstream second processing station during a specific period.
  • a device for transporting sheets in printing machines from the printing units to the sheet deposit stack consisting of at least one gripper carriage guided on both sides on chain tracks with gripper systems for gripping and guiding the sheets, the gripper carriage describing a straight guide path above the sheet deposit stack and after depositing the sheet the sheet stack is guided within a deflection area on a radius of curvature and continues to consist of leading edge grippers Detecting the leading edges of the sheets and depositing the sheets on the sheet deposit stack, wherein a gripper carriage support is provided only on the straight guide path above the sheet deposit stack and in the deflection area.
  • the invention has for its object to provide a device for shingling sheets.
  • the solution described can be used in a hybrid, sheet-like substrate processing machine arrangement, preferably in a hybrid printing machine, which the high productivity of a conventional, e.g. B. in an offset printing process or in a flexographic printing process or in a screen printing process printing device or a coating device, in particular a varnishing unit variable in combination with at least one flexible printable printing, z. B. uses as an inkjet printer designed non-impact printing device, both the conventional printing device or the coating device and the non-impact printing device in one running Production can be used inline with the optimum working speed for them.
  • a hybrid machine arrangement is particularly suitable for the production of packaging materials, e.g. B.
  • non-impact printing devices can be used to print sheet-shaped, arch-shaped substrates advantageously in a flat state and in a horizontal position.
  • the length of a linear transport device can be transferred to a different number of printing units or printing stations (color separations) and (intermediate) dryer configurations, e.g. B. for water-based or UV-curing inks or inks than would be the case with a rotary transport device via cylinder.
  • Fig. 1 illustrates in a block diagram different production lines, each with a machine arrangement with several in particular different processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 for processing at least one sheet-shaped substrate, in particular a printing material, preferably a sheet-shaped sheet, in particular a rectangular sheet, in short a sheet, wherein this at least one substrate is designed to be rigid or flexible depending on the material, material thickness and / or grammage.
  • Each of these processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 each as a z. B. formed independently functional module, whereby a module is to be understood as a generally independently manufactured or at least one assembled machine unit or functional assembly.
  • Each of the processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is therefore preferably manufactured independently and is in a preferred embodiment, for. B. individually testable in its respective function.
  • the machine arrangement in question, each of which is selected and selected from at least three different sheet processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is formed, each embodies a specific production line.
  • Each of the production lines shown, each with a specific machine arrangement with several processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is embodied in each case in particular for the production of a packaging means formed from the printing material, preferably from the printed sheet.
  • the packaging materials to be manufactured are e.g. B.
  • each a folding box which are each made from printed sheets.
  • the various production lines are therefore especially designed for the production of different packaging materials.
  • the processing of the printing material required during a specific production takes place inline, ie the processing stations involved in the specific production 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 are when the printing material passes through the respective processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 machine arrangement in an orderly sequence used and matched to each other without intermediate storage for the printing material, ie the processed sheets, being provided during the production carried out with the respective machine arrangement.
  • the production lines shown have in common that they each cooperate with a processing station 06 which has at least one non-impact printing device 06, preferably several, e.g. B. four, five, six or seven, in particular each individually controlled non-impact printing devices 06, these non-impact printing devices 06 are preferably arranged one behind the other in the transport direction T of the printing material and are designed such that they each at least almost the printing material can print in its full width, directed transversely to the transport direction T.
  • a non-impact printing device 06 uses a printing process without a fixed printing form and can, in principle, print from print to printing material, e.g. B. each sheet of this printing device 06 just fed with a different from the previous print image print image.
  • the respective non-impact printing device 06 is in each case implemented in particular by at least one inkjet printer or by at least one laser printer.
  • Laser printers generate the respective print image in an electrophotography process.
  • the non-impact printing device 06 is, for. B. also referred to as a digital printing press.
  • each as a printing material a sequence of in particular rigid sheets z. B. is processed from a paper, from a single-layer or multi-layer cardboard or from a cardboard in particular to a packaging material.
  • the substrates paper, cardboard and cardboard differ in their respective basis weight, ie the weight in grams for one square meter of this substrate.
  • the aforementioned printing material with a basis weight between 7 g / m 2 and 150 g / m 2 applies as paper, between 150 g / m 2 and 600 g / m 2 as cardboard and with more than 600 g / m 2 as cardboard.
  • cartons For the production of folding boxes in particular cartons are used, which have good printability and for subsequent finishing or processing such.
  • B. are suitable for painting and punching. These cartons are z. B. wood-free, slightly wood-containing, wood-containing or waste paper.
  • multi-layer cartons In their structure, multi-layer cartons have a top layer, an insert and a backing on the back. From their surface quality, cartons are e.g. B. uncoated, pigmented, coated or cast coated.
  • a format of the sheet is e.g. B. in the range between 340 mm x 480 mm and 740 mm x 1060 mm, with the format information usually the first number indicating a length in the transport direction T of the sheet and the second number an orthogonal to the transport direction T width of the sheet.
  • Each production begins with sheets provided in the processing station 01, the processing station 01 as one Investor 01, z.
  • a sheet feeder 01 usually takes a z. B. on a pallet stacked stack of sheets, whereas a magazine feeder 01 has several compartments, in each of which sheets, in particular stacks of z. B. different types of sheets or sheets of different formats are inserted or at least insertable.
  • the investor 01 z. B. by means of a suction head 41, the stacked sheets and guides them in a sequence of sheets separated from one another or in a shingled stream of the next processing station 02; 03; 04; 06 to.
  • the next processing station 02; 03; 04 is e.g. B.
  • the next processing station 06 can also z. B. the at least one non-impact printing device 06.
  • the offset printing device 04 is preferably designed as a sheet-fed offset printing press, in particular as a sheet-fed printing press with a plurality of printing units 86 in a row design.
  • the offset printing device 04 provides the sheets with at least one static, that is to say unchangeable during the printing process due to the bond to the printing form used, whereas the non-impact printing device 06 provides the sheets with at least one changing or at least changing printing image.
  • the sheet is subsequently subsequently transported from there to the processing station 04 designed as an offset printing device 04.
  • a metallized lacquer layer detached from a carrier film is transferred to the printing material.
  • the cold foil application device 03 is advantageously z. B. integrated in the offset printing device 04 by two additional printing units 87; 88 are provided in the offset printing device 04.
  • T des Printing material of the first printing unit 87 a special adhesive is applied to the printing material, ie the respective sheet, using a standard printing form.
  • a printing unit 88 which is second in the transport direction T of the printing material, is equipped with a film transfer device having the lacquer layer to be transferred.
  • the film carrying the lacquer layer is guided from an unwinding station into a printing nip between a transfer cylinder and a printing cylinder interacting with this transfer cylinder and brought into contact with the printing material.
  • the paint layer is colored by an aluminum layer and a protective lacquer layer, the coloring of which influences the color impression.
  • adhesion of an adhesive layer with the printed adhesive layer the transfer layers adhere to the substrate.
  • the carrier film is then wound up again. After the cold foil transfer, overprinting with conventional printing inks as well as with UV and hybrid inks is possible inline, in particular in the offset printing device 04, in order to produce different metallic colors.
  • a z. B. particularly absorbent and / or to be prepared for printing with a non-impact printing device 06 printing material is z. B. trained as a primer application device 02 next processing station 02 to at least one surface of this substrate before printing or painting with a z. B. to coat, in particular seal, water-based primer.
  • the priming represents a primer or first coating of the printing material, in particular to improve or enable adhesion of a printing ink or ink to be applied to the printing material afterwards.
  • the primer application device 02 is e.g. B. in connection with a printing unit 86 of a rotary printing press and z. B.
  • a printing unit cylinder 82 interacting with a system printing cylinder 119 with an application roller 83 positioned or at least employable on this printing unit cylinder 82, preferably in the form of an anilox roller 83, and at least one doctor blade 84 extending in the axial direction of the application roller 83, in particular a chambered doctor blade system 84 ( 3 to 5 , 8th , 27 ,
  • the primer is applied by means of the primer application device 02 either over the entire surface or only at certain, ie. H. previously determined positions, d. H. partially applied to the substrate.
  • the substrate processed in the primer application device 02 e.g. B. sheet, is the next processing station z. B. an offset printing device 04 and / or z. B. a non-impact printing device 06 supplied.
  • the z. B. designed as a flexographic printing device 04 processing station 04 executed flexographic printing is a direct high-pressure process in which the raised areas of the printing form are image-bearing, which is often used for printing on packaging materials made of paper, cardboard or cardboard, from metallized film or from a plastic such as, for . B. PE, PET, PVC, PS, PP, PC is used. Low-viscosity printing inks and flexible printing plates made of photopolymer or rubber are used in flexographic printing.
  • a flexographic printing device 04 contains a) an anilox roller, via which the printing form is inked, b) a printing cylinder, also called a form cylinder, on which the printing form is attached, and c) an impression cylinder, which guides the printing material.
  • the processing station 04 which is designed as a flexographic printing device 04 or as an offset printing device 04 and in each case prints the sheets with at least one static print image, preferably has a plurality of, eg. B. at least four printing units 86, each printing unit 86 preferably printing a different printing ink, so that the substrate during passage through the flexographic printing device 04 or the offset printing device 04 each in multi-color, z. B. is printed in a four-color print.
  • the colors yellow, magenta, cyan and black are used in particular as printing inks.
  • the processing station 04 printing the sheets with at least one static print image is designed as a printing device 04 printing in a screen printing process.
  • this printing material is z. B. a processing station 07 designed as an intermediate dryer 07, this intermediate dryer 07 as a printing substrate in question z. B. is formed by radiation with infrared or ultraviolet radiation drying, the type of radiation is particularly dependent on whether the printing ink or ink applied to the substrate is water-based or UV-curing.
  • a processing station 08 designed as a painting device 08.
  • the coating device 08 carries z. B. a dispersion varnish, wherein dispersion varnishes consist essentially of water and binders (resins), with surfactants stabilizing these dispersions.
  • a coating device 08 which applies a dispersion coating to the printing material consists either of an anilox roller, a chamber doctor blade and an application roller (comparable to a flexographic printing unit) or of an immersion and application roller.
  • a printing form preferably based on photopolymerization z. B. applied flat and / or partial paint. Special rubber coating plates can also be used for full-surface painting.
  • a dryer 09 processing station 09 which dryer 09 is designed as a printing substrate in question by irradiation with infrared radiation or by hot air.
  • the dryer with the reference symbol 09 is preferably the last of these several dryers 07; 09, wherein the intermediate dryer (s) 07 and the (final) dryer 09 are structurally the same or can be designed differently.
  • the dryer 09 is supplied with a printing material drying by ultraviolet radiation, ie a printing material on which a UV-curing ink or ink or a UV-curing lacquer, eg. B. a gloss varnish is applied, this dryer 09 with an ultraviolet radiation generating radiation source fitted.
  • a printing material drying by ultraviolet radiation ie a printing material on which a UV-curing ink or ink or a UV-curing lacquer, eg. B. a gloss varnish is applied
  • this dryer 09 with an ultraviolet radiation generating radiation source fitted.
  • dispersion varnishes more intensive gloss and matt effects can be achieved compared to classic oil printing varnish.
  • Special optical effects can be achieved with effect pigments in the paint.
  • the primer application device 02, the cold foil application device 03 and the painting device 08 can be
  • the substrate is z. B. fed to a processing station 11 which carries out a mechanical further processing on the printing material, for. B. by punching, creasing and / or separating parts, in particular breaking out benefits from their respective composite in the preferably printed sheet.
  • a processing unit 46 Each of the aforementioned further processing operations is carried out in or by a processing unit 46.
  • the mechanical further processing is preferably carried out in cooperation with a cylinder transporting the respective sheet.
  • the printing material arrives at a delivery 12, which in each of the in the Fig. 1 shown, each by a certain arrangement of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 embodied production lines each form the last processing station 12.
  • the previously processed sheet z. B. preferably stacked on a pallet.
  • the respective machine arrangement is thus designed to print the sheets in each case with a water-based printing ink or with a printing ink curing by ultraviolet radiation.
  • An advantageous machine arrangement mentioned here by way of example has several Processing stations for processing sheets, the sheet having a plurality of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 are arranged one after the other for inline processing of these sheets, at least one of these processing stations 06 being designed as a non-impact printing device 06, a first processing station 01 arranged upstream of the sheet of the non-impact printing device 06 in the transport direction T as a sheet feeder 01 or is designed as a magazine feeder 01, wherein a processing station 08 arranged between the first processing station 01 and the non-impact printing device 06 is designed as a first coating device 08 each applying a varnish, with the first coating device 08 and the non Impact printing device 06, a first dryer 07 is arranged, a first conveyor belt 17 being arranged to transport the sheets from the first dryer 07 to the non-impact printing device 06, with the sheet after the non-impact printing device 06 in the transport direction T being a second Dryer 07 is arranged, one e A device for transferring the sheets coming from the non-
  • a mechanical further processing device 11 can also be arranged between the third dryer 09 and the delivery 12. Furthermore, the sheet is in front of the non-impact printing device 06 z. B. a cold foil applying coating device 03 is arranged.
  • the non-impact printing device 06 preferably has a plurality of individually controlled ink jet printers along the transport path of the sheets. In the effective range of the non-impact printing device 06, the sheets are preferably each guided horizontally and flat on a transport device 22, the transport device 22 having a linear transport path or a curved transport path for the sheets at least in the effective range of the non-impact printing device 06, wherein the curved transport path through a concave or convex curved line lying in a vertical plane with a radius is formed in a range between 1 m and 10 m.
  • the sheet In the transport direction T the sheet is in front of the non-impact printing device 06 z. B. a transfer device is arranged, the transfer device aligns the sheets at least in their axial register and / or circumferential register in register with respect to the printing position of the non-impact printing device 06, the transfer device z. B. has a suction drum 32 holding the respective sheet by means of suction air.
  • This machine arrangement is designed to print the sheets in particular in each case with a water-based printing ink or with a printing ink which cures by means of ultraviolet radiation.
  • This machine arrangement is in particular designed to produce different packaging materials.
  • the device for transferring the sheets coming from the non-impact printing device 06 to the second coating device 08 is e.g. B. formed as a vibrating gripper 19 and a cooperating with the vibrating gripper 19 transfer drum 31.
  • Fig. 2 shows an example of a machine arrangement with several processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 according to the aforementioned production line No. 6.
  • Sheets are in a sheet feeder 01 z. B. picked up individually with a suction head 41 from a stack and successively in a cycle of z. B. 10,000 pieces per hour to an offset printing device 04 with z. B. four printing units 86 arranged in a row.
  • a rotary body, in particular a cylinder, preferably a transfer drum 43 is provided, which is arranged between two immediately adjacent printing units 86.
  • the offset printing device 04 takes over the sheet fed from the sheet feeder 01 z.
  • the sheets are printed on at least one side. If there is a turning device, the sheets can be printed in the offset printing device 04 can also be printed on both sides, ie in face and reverse printing. After passing through the z. B.
  • the relevant preferably four-color printed sheet is transferred by means of a first gripper system 16, in particular a first chain conveyor 16 and at least a first conveyor belt 17 to a non-impact printing device 06, the first gripper system 16 and the first conveyor belt 17 cooperate in the transfer of the sheets to the non-impact printing device 06, in such a way that the first gripper system 16 delivers the sheets to the first conveyor belt 17, the transfer of the sheets to the non-impact printing device 06 from the first conveyor belt 17.
  • the non-impact printing device 06 preferably has several, for. B. five linearly arranged in a row, in particular individually controlled inkjet printers.
  • the sheets in a mechanical processing device 11 z. B. further processed by punching and / or creasing and / or breaking out benefits from the respective sheet.
  • the sheets and / or the benefits released from the sheets are collected in a display 12, in particular stacked.
  • a delivery 12 in particular a multi-stack delivery can be provided along the transport path provided for the sheets.
  • the sheet is z. B. after the mechanical processing device 11, a multi-stack delivery.
  • the sheets picked up from a stack in the feeder 01, in particular in the sheet feeder 01, are transported spaced apart from one another by the offset printing device 04 at a first transport speed.
  • the one from the offset printing facility 04 Sheets transferred to the non-impact printing device 06 are transported in this non-impact printing device 06 at a second transport speed, the second transport speed valid in the non-impact printing device 06 generally being lower than that in the offset Printing device 04 applicable first transport speed.
  • the first transport speed valid in the offset printing device 04 to the generally lower second transport speed valid in the non-impact printing device 06, e.g. B. the gap between directly successive arcs, ie the distance between z. B.
  • a gripper channel width for the sheets transported in the gripper closure by the offset printing device 04 preferably reduced when transferring these sheets from the offset printing device 04 to the non-impact printing device 06, such a reduction in distance based on their original distance e.g. B. is in the range between 1% and 98%.
  • Directly consecutive sheets are thus also transported at a distance from one another in the non-impact printing device 06, however, with a generally smaller sheet gap or with a smaller distance than in the offset printing device 04 and consequently also with a lower second transport speed.
  • This second transport speed is preferably maintained when sheets printed in the non-impact printing device 06 are first sent to an intermediate dryer 07 or dryer 09 and from there z. B.
  • the sheets can also be brought from their second transport speed to a third transport speed if, for. B. requires the mechanical processing device 11, the third transport speed is usually higher than the second transport speed and z. B. again corresponds to the first transport speed, which is particularly valid in the offset printing device 04.
  • a second rocking gripper 19 is provided, which picks up the sheets coming from the intermediate dryer 07 or dryer 09 from the feed table 18 and z. B. to a mechanical Further processing device 11 arranged second transfer drum 31 passes, after which the sheet z. B. can be transported by means of a gripper closure through the area of the mechanical further processing device 11.
  • a plurality of processing units 46 further processing device 11 is provided for transferring the sheets from one to the next of the processing units 46 arranged in a row, a rotary body, in particular a cylinder, preferably a transfer drum 44, which is arranged between two adjacent processing units 46.
  • One of the processing units 46 is e.g. B. as a punching machine, another processing plant 46 z. B. formed as a creasing.
  • the processing unit 46 concerned is preferably designed to carry out the mechanical further processing of the sheets in cooperation with a cylinder transporting the respective sheet. After their mechanical processing, the sheets and / or benefits separated from them are z. B. transported by means of a second chain conveyor 21 to the display 12 and collected there, preferably stacked.
  • the sheets are fed from the outlet of the offset printing device 04 at least to the outlet of the intermediate dryer 07 or dryer 09, preferably to the beginning of the mechanical further processing device 11, each by means of a multi-part assembly, that is to say a plurality of assemblies arranged in succession in the transport direction T of the sheets, in particular transport units 22 transported, wherein the transport device 22 transports the sheets with their respective length directed in the transport direction T at least in the effective range of the non-impact printing device 06 arranged between the offset printing device 04 and the intermediate dryer 07 or dryer 09 along a linear transport path, preferably lying horizontally flat .
  • the linear transport route and the horizontally flat transport are preferably also continued during the transport of the sheets through the intermediate dryer 07 or dryer 09 arranged downstream of the non-impact printing device 06. If necessary, there can also be between the offset printing device 04 and the non-impact printing device 06 an intermediate dryer 07 or a dryer 09 may be arranged.
  • FIG. 3 is a machine arrangement with the following processing stations 01 arranged one behind the other in the transport direction T of the printing material; 02; 03; 04; 06; 07; 08; 09; 11; 12 shown: sheet feeder 01; Primer application device 02 or painting device 08; Intermediate dryer 07; Non-impact printing device 06; Intermediate dryer 07; Painting device 08; Dryer 09; Display 12.
  • FIG. 4 is a machine arrangement with the following processing stations 01 arranged one behind the other in the transport direction T of the printing material; 02; 03; 04; 06; 07; 08; 09; 11; 12 shown: sheet feeder 01; Primer application device 02; Intermediate dryer 07; Non-impact printing device 06; Dryer 09; Display 12.
  • FIG. 5 is a machine arrangement with the following processing stations 01 arranged one behind the other in the transport direction T of the printing material; 02; 03; 04; 06; 07; 08; 09; 11; 12 shown: sheet feeder 01; Primer application device 02; Intermediate dryer 07; Non-impact printing device 06; Intermediate dryer 07; Painting device 08; Intermediate dryer 07; Painting device 08; Dryer 09; Display 12.
  • FIG. 6 is a machine arrangement with the following processing stations 01 arranged one behind the other in the transport direction T of the printing material; 02; 03; 04; 06; 07; 08; 09; 11; 12 shown: sheet feeder 01; a first offset printing device 04; Cold foil application device 03; four further offset printing devices 04 in series; Intermediate dryer 07; Non-impact printing device 06; Intermediate dryer 07; Non-impact printing device 06; Dryer 09; Display 12.
  • Fig. 7 is a machine arrangement shown on the basis of its length in an offset with the following processing stations 01 arranged one behind the other in the transport direction T of the printing material; 02; 03; 04; 06; 07; 08; 09; 11; 12 shown: sheet feeder 01; a first offset printing device 04; Cold foil application device 03; four further offset printing devices 04 in series; Intermediate dryer 07; Non-impact printing device 06; Intermediate dryer 07; Painting device 08; Dryer 09; two mechanical processing devices 11 in series; Display 12.
  • Fig. 8 is a machine arrangement with the following processing stations 01 arranged one behind the other in the transport direction T of the printing material; 02; 03; 04; 06; 07; 08; 09; 11; 12 shown: Magazinanleger01; Primer application device 02; Intermediate dryer 07; Non-impact printing device 06; Intermediate dryer 07; Painting device 08; Dryer 09; Display 12.
  • the Fig. 9 shows exactly this machine arrangement in a top view and in a side view.
  • Fig. 10 shows again in more detail the aforementioned multi-part transport device 22, which is preferably for use in a machine arrangement with a plurality of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is provided for processing sheets.
  • a multi-part transport device 22 which is preferably for use in a machine arrangement with a plurality of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is provided for processing sheets.
  • a gripper system 16 in particular a first chain conveyor 16 having at least one revolving chain, is provided, which along its at least one revolving chain, preferably equidistantly spaced, has a plurality of gripper bars or preferably a plurality of gripper carriages 23, each of which the sheet to be transported is preferably held at its front edge in the transport direction T, ie at its front edge, by one of the gripper carriages 23 and is transported along the transport path predetermined by the chain course.
  • the gripper carriages 23 are each provided with controlled or at least controllable holding means 79 ( Fig. 15 ), especially with grippers z. B.
  • the distance between gripper car 23 successive in the transport direction T of the sheet is z. B. in the range between 700 mm and 1,000 mm.
  • the at least one chain of the first chain conveyor 16 rotates in a semicircular manner in each case on a chain wheel 24 arranged at the output of the offset printing device 04.
  • An area in which the first chain conveyor 16 sheets from a z. B. trained as an offset printing device 04 processing station 04 forms a transfer area of this first chain conveyor 16, whereas an area in which the first chain conveyor 16 sheets z. B. to another transport device, in particular for transport to a non-impact printing device 06 designed processing station 06, forms a transfer area of this first chain conveyor 16.
  • a first sprocket 81 arranged in the takeover area of the first chain conveyor 16 is preferably designed as a drive wheel that sets the at least one chain in motion, whereas the second sprocket 24 arranged at the output of the offset printing device 04, in particular in the transfer area of the first chain conveyor 16, is preferably designed as the at least one a chain deflecting deflection wheel is formed.
  • At least one suction chamber 26 for holding one one of the gripper carriages 23 transported, ie arranged, arranged sheet.
  • a plurality of individually controlled or at least controllable suction chambers 26 are preferably arranged there in the transport direction T of the sheet.
  • the sheet first circulating conveyor belt 17 for receiving and for the further transport of a sheet taken off from the first chain conveyor 16, the sheet taken over by this first conveyor belt 17 each preferably further in the direction of the non-impact printing device 06 is transported.
  • a second rotating conveyor belt 27 is preferably provided, on which the sheets are transported one after the other, preferably lying horizontally flat, along a linear transport path.
  • the transfer device is in particular arranged between the first conveyor belt 17 and the second conveyor belt 27.
  • a third circulating conveyor belt 28 is preferably provided, on which the sheets taken over from the non-impact printing device 06 are transported one after the other, preferably lying horizontally flat, along a linear transport path.
  • the third conveyor belt 28 transfers the sheet transported through the intermediate dryer 07 or dryer 09 to the feed table 18, from where the sheets are preferably successively transported to the mechanical further processing device 11.
  • the first conveyor belt 17, the second conveyor belt 27 and the third conveyor belt 28 preferably transport the sheets in the same z. B. horizontal, in particular designed as a flat surface transport plane 29.
  • the transport device 22 for transporting sheets in a machine arrangement, each with sheet processing processing stations thus comprises at least three transport units, namely the first gripper system 16 or the first chain conveyor 16, the first conveyor belt 17 and the second conveyor belt 27.
  • the first chain conveyor 16 and the first conveyor belt 17 cooperate to transfer one Sequence of sheets from a first processing station to a second processing station, preferably immediately following in the transport direction T of the sheets of the first processing station.
  • the sequence of sheets is transferred from the first conveyor belt 17 to the second conveyor belt 27 belonging to the next processing station.
  • a third conveyor belt 28 is preferably also provided, the sequence of sheets being transferred from the second conveyor belt 27 to the third conveyor belt 28 belonging to a third processing station, which is preferably immediately following in the transport direction T of the sheets of the second processing station.
  • the transport belts 17; 27; 28 of the transport device 22 the sheets each along a curved transport path, in particular along a concave or convex curved line lying in a vertical plane with a radius of at least 1 m, preferably with a radius in the range between 2 m and 10 m, in particular with a Radius in the range between 3 m and 5 m.
  • the conveyor belts 17; 27; 28 are preferably each formed as a suction belt conveyor, ie as a transport belt each with at least one suction chamber 26 each sucking the respective sheet during its transport.
  • these suction chambers 26 can preferably be controlled individually and / or preferably independently of one another with regard to the action of their respective suction air.
  • a plurality of individually controlled non-impact printing devices 06 are preferably arranged along the curved transport path, with the plurality of non-impact printing devices 06 e.g. B. are each formed as an inkjet printer.
  • the conveyor belts 17; 27; 28 of the transport device 22 are each z. B.
  • a gripperless transport device is to be understood in each case, the relevant conveyor belt 17; 27; 28 is designed to run continuously between at least two deflection devices.
  • Fig. 11 shows in an enlarged detail again some details of the already based on the Fig. 10 Transport device 22 described.
  • a transfer device preferably with a suction drum 32, is arranged in the area of the transfer of the sheets from the first conveyor belt 17 to the second conveyor belt 27 orthogonal to the transport direction T of the sheets.
  • the suction drum 32 preferably consists of several, for. B. six suction rings 76 arranged parallel to each other on a common shaft 89.
  • the suction drum 32 In a preferred embodiment of the suction drum 32, their suction rings 76 are individually acted upon by suction air or at least acted upon, which has the advantage that an effective width of this suction drum directed in the axial direction of the suction drum 32 32 In particular, depending on the format used, the sheet can be adjusted or adjusted as required.
  • the suction drum 32 preferably has on its circumference at least one stop 34 projecting into the transport plane 29 of the sheet, a stop surface of the stop 34 in question extending axially to the suction drum 32 and preferably vertically to the preferably horizontal transport plane 29.
  • the suction drum 32 either has a stop 34 which is continuous in its axial direction or preferably two stops 34 which are spaced apart from one another in its axial direction.
  • the same suction drum 32 can be used for sheets of several different format widths, in the case of a suction drum 32 having a plurality of suction rings 76, at least one stop 34 is preferably arranged on each suction ring 76.
  • the suction drum 32 is rotatably and axially movable.
  • the suction drum 32 has a first drive for its circumferential movement and a second drive for its axial movement, the circumferential movement and the axial movement being controlled independently of one another by a control unit.
  • the Circumferential movement and / or the axial movement of the suction drum 32 are controlled by the control unit as a function of a position signal which a first sensor 33 upstream of the suction drum 32 in the transport direction T of the sheet generates and detects by detecting the position of the sheet which reaches the suction drum 32 next the control unit directs.
  • the suction drum 32 has the task of aligning the sheets fed to it in register and feeding these sheets in their respectively aligned state to a further processing station, in particular the non-impact printing device 06, so that the sheets can be processed further there.
  • the suction drum 32 thus directs the respective sheet to be fed to the effective range of the non-impact printing device 06, for. B.
  • a sheet gripped by the suction drum 32 preferably by means of suction air, that is to say by means of a negative pressure, is aligned laterally to its transport direction T, in particular, by the axial movement of this suction drum 32 controlled as a function of the position signal generated by the first sensor 33.
  • the suction drum 32 grips an aligned sheet, in particular by clocked suction air, ie the suction air is z. B.
  • the first sensor 33 is e.g. B. formed as an optical sensor, in particular as a line sensor, preferably as a CCD line sensor.
  • the first sensor 33 preferably detects itself to generate the position signal edge of the relevant sheet extending along the transport direction T of the sheet or marks arranged on the sheet, the marks being arranged in the printed image of this sheet or outside the relevant printed image.
  • a second sensor 36 which is preferably upstream of the first sensor 33 in the transport direction T of the sheet and is preferably also connected to the control unit, detects e.g. B. the front edge and possibly also the number of sheets transported from the first conveyor belt 17 to the second conveyor belt 27.
  • the second sensor 36 preferably detects an edge of the respective sheet leading in the transport direction T of the sheet and is primarily used for sheet arrival control.
  • the second sensor 36 is e.g. B. designed as an optical sensor, in particular as a reflex sensor or as a light sensor.
  • the guide member 37 in question with the outer surface of the suction drum 32 forms a gusset, in which the sheets coming from the first conveyor belt 17 are inserted.
  • z. B. one or more preferably each z. B. provided by the control unit controllable suction chambers 26.
  • the suction chambers 26 are optionally part of the transport device 22.
  • the lateral alignment of the sheet takes place by axially displacing the suction drum 32, in particular after aligning the sheet in question on the at least one stop 34 and switching off the suction air in the last suction chamber 26 in the transport direction T of the sheet in question.
  • This lateral alignment of the sheet is temporally superimposed on the rotational movement of the suction drum 32.
  • the suction drum 32 aligns the sheets accordingly in each case at least in its axial register and / or in its circumferential register in register with respect to a processing position of the processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 out.
  • the sheet having a plurality of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 are arranged one after the other for inline processing of these sheets, at least one of these processing stations 06 being designed as a non-impact printing device 06, the first processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 z.
  • a first alignment device is arranged upstream of the sheet in the transport direction T, this first alignment device holding the sheets in register at least in their axial register and / or in their circumferential register relative to a processing position of the first processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 aligns.
  • the sheet is between the non-impact printing device 06 and a processing station 01; 02; 03; 04; 07; 08; 09; 11; 12 z.
  • a further alignment device is arranged, this further alignment device holding the sheets in register at least in their axial register and / or in their circumferential register relative to a processing position of the processing station 01; 02; 03; 04; 07; 08; 09; 11; 12 aligns.
  • the suction drum 32 arranged in particular in the transfer device is z. B. also used to adapt the sheets to be transferred from the offset printing device 04 to the non-impact printing device 06 in their respective transport speeds. Since the second transport speed that is valid in the non-impact printing device 06 is generally lower than the first transport speed that is valid in the offset printing device 04, the suction drum 32 brakes the sheets that are fed one after the other at the first transport speed from the offset printing device 04 each with a push from the front Edge on the at least one stop 34 initially aligns the respectively sucked-in sheet if necessary, that is, at a lateral position signal of the first sensor 33 indicating a need for correction, at least laterally by an axial movement of the suction drum 32 holding the sheet in question and then accelerates or decelerates the gripped one Sheet by rotation of this suction drum 32 to the second transport speed required in the non-impact printing device 06, the sheet in question z.
  • each of which has a plurality of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 for processing sheets and for transporting these sheets have at least one transport device for processing sheets of different formats, ie of different lengths and / or widths. Therefore, the usually rectangular arch z. B. in their respective length, this length extending in the transport direction T of this arc.
  • a method with the following method steps: Method for operating a plurality of sheets of a processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 sequentially feeding transport device, in which for processing by the same processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 sheets of different lengths each extending in the transport direction T of these sheets are used, the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 sheets to be fed in succession are each transported by the transport device at a distance, the transport device imprinting a transport speed on the sheets to be transported, the distance between sheets immediately following one another for sheets of different lengths each extending in
  • the distance between consecutive sheets in the transport direction T, ie between the rear edge of the preceding sheet extending transversely to the transport direction T and the front edge of the immediately following sheet extending transversely to the transport direction T, is z. B. in the range between 0.5 mm and 50 mm, preferably less than 10 mm.
  • a sheet of shorter length in the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 is to be processed after a sheet of greater length
  • the sheet of shorter length is accelerated by the transport device by increasing its transport speed.
  • a sheet of greater length is slowed down by the transport device by reducing its transport speed when the sheet of greater length is in the relevant processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 is to be processed after a sheet of shorter length.
  • a non-impact printing device 06 is preferably used, the productivity of which is usually greatest when the sheets to be printed by it are fed consecutively regardless of their respective format at a constant minimum distance.
  • the non-impact printing device 06 a z. B. arranged as an offset printing device 04 processing station 04, printed sheets are fed in the offset printing device 04 regardless of their respective format with the production speed of this offset printing device 04 corresponding transport speed of the transport device, these sheets of the offset -Printer device 04 predetermined transport speed during its transport with the transport device to the transport speed corresponding to a processing speed of the non-impact printing device 06.
  • the respective sheet is preferably each non-positively z. B. held by suction air.
  • the transport speed of the respective sheet is preferably determined by suction rings 76 of a suction drum 32 acting on it or by at least one endlessly rotating suction belt 52; 78 stamped.
  • the transport speed to be impressed on the sheet in question is set by a preferably electronic control unit, the control unit adjusting the transport speed in particular to maintain the constant distance between successive arcs in a control loop, as he previously z. B. i. V. m. the rotational position control of the suction drum 32 has been described or z. B. i. V. m. a control device to be explained in more detail below and connected to this control device, for. B. optical sensors 33; 36 will be described.
  • each of several processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 for processing sheets and for transporting these sheets have at least two transport devices, limp sheets are transported and processed, d.
  • a non-impact printing device 06 is preferably used as processing station 02; 03; 04; 06; 07; 08; 09; 11; 12, a non-impact printing device 06 is preferably used.
  • the sheets are transported in the first transport device and / or in the second transport device in each case in particular in the same transport plane 29.
  • the first transport device for. B. uses a first, in particular endlessly circulating conveyor belt 17 and / or as a second transport device a second, in particular endlessly circulating conveyor belt 27, these conveyor belts 17; 27 z. B. are each formed as a suction belt. In an alternative embodiment of the holding elements, these are each designed as a suction ring 76 of a suction drum 32.
  • a holding force is exerted by the relevant holding element of the first transport device, this holding force being greater, at least for a short time, than a tensile force exerted on this sheet and exerted by the second transport device.
  • the first transport device holds the respective one of the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 feeding sheet with the at least one holding element each preferably by a frictional connection, for. B. by suction air.
  • the proposed method means that the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 sheets to be supplied are subjected to a tensile stress and thereby tightened despite the pushing movement carried out by the first transport device.
  • the sheets are preferably each checked after a check of their respective actual position in the transport plane 29 and in the event of a deviation of the actual position from one for the sheet in question in the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 provided target position after a position correction in the intended target position to the second transport device.
  • Fig. 12 shows in an enlarged detail from the Fig. 10 the transfer of the sheets on the feed table 18, in particular from the third conveyor belt 28 in the area of action of the intermediate dryer 07 or dryer 09 to the area of action of the mechanical further processing device 11.
  • B. at least a fourth conveyor belt 38, which is preferably inclined at an acute angle ⁇ to the preferably horizontal transport plane 29. Also in connection with the fourth conveyor belt 38.
  • B. a third sensor 39 is provided, each of which generates a position signal from the sheet transported with the fourth conveyor belt 38 and passes it to the control unit. It can e.g.
  • a sheet to be fed to the mechanical further processing device 11 is brought by the second vibrating gripper 19 and the second transfer drum 31 from the second transport speed to the third transport speed, which means that the sheet in question is in particular controlled by the rotation of the control unit second transfer drum 31 is accelerated.
  • the sheet z. B. to mechanical processing device 11 a shingling of these sheets instead.
  • a sheet transported by the fourth conveyor belt 38 is raised in its rear region by means of clocked blown air and decelerated by the fourth conveyor belt 38 in connection with the suction chamber 42. A subsequent sheet is then drawn from the faster running front belt conveyor 48 under the previous sheet.
  • Preferably at the transfer device of the sheet z. B. for mechanical further processing device 11 is accordingly a method for arranging sheets in a scaled position in a between a first processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 and a second processing station 01; following the sheet in the transport direction T of the first processing station; 02; 03; 04; 06; 07; 08; 09; 11; 12 arranged transfer device, in which the sheets to be shed from the first processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 are transported one after the other in a transport plane 29 one after the other to the transfer device, in each of which one rear edge in the transport direction T of the edge of the first processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 coming sheets are lifted exclusively by blowing air relative to the transport plane 29 and a subsequent sheet is pushed under the rear edge of the previous sheet.
  • the blown air acts with at least 50% of its intensity preferably in the direction of a normal standing in the transport plane 29 against gravity. It is advantageously provided that further blowing air against the transport direction T of the sheet is essentially tangential at an acute angle formed with the transport plane 29 in the range of z. B. 0 ° to 45 ° from above, ie on the surface facing away from the transport plane 29 of the sheet is blown onto the sheet to be transported to the transfer device. In this case, the further blowing air directed against the transport direction T of the sheet emerges from a converging acute angle in the region of z. B. 0 ° to 45 ° forming guide surface, in particular nozzles for the exit of the blown air are arranged in the guide surface.
  • the blowing air acting counter to gravity in the direction of the transport plane 29 is preferably clocked by the control unit.
  • the of the first processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 to the subsequent second processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 sheets to be transported are each held in the transport plane 29 by means of suction air acting preferably in the front half of the sheets in the transport direction T.
  • the data from the first processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 to the subsequent second processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 sheets to be transported in the transport plane 29 are preferably clocked by the control unit.
  • control unit determines an effective width of the blowing air acting in the direction of the transport plane 29 against the force of gravity and / or one orthogonal to the transport direction T of the sheet Effective width of the further blowing air directed against the transport direction T of the sheet and / or an effective width for that of the first processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 to the subsequent second processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 to be transported in the transport plane 29 suction air holding each set depending on an orthogonal to the transport direction T of the sheet directed width of the sheet.
  • the arch 51 which is preferably designed as a printing arch, is in the region, ie in the working region, in particular in one of the machine arrangements described above ( 1 to 9 ) arranged transfer device on which the sheets 51 in particular from an offset, flexo or non-impact printing device 04; 06 coming z.
  • a device for shingling sheets 51 is arranged, which is also referred to below as shingling device 132.
  • a plurality of sheets 51 are fed to the shingling device 132 one after the other individually, ie at a distance from one another, on a feed table 134.
  • Feed table 18 ( Fig. 12 ) is formed, the feed table 18, the sheet 51 z. B. by means of the conveyor belt 38 of the shingling device 132 one after the other and / or wherein the shingled by the shingling device 132 sheet 51 from the feed table 18 z. B. by means of a rocking gripper 19 z. B. transferred to a transfer drum 31.
  • the feed table 134 has e.g. B. a suction chamber 42 or in the transport direction T of the sheet 51 one behind the other several in particular individually and independently switchable in their respective pressure on suction chambers 42, as z. B. in the Fig. 12 is shown.
  • the shingling device 132 is shown in FIGS 30 and 31 shown as an example.
  • the undercut device 132 has above the feed table 134 a box-shaped housing, which extends preferably over the entire width b51 of the sheets 51, the so-called blow box 133, with the blow box 133 on the side facing the feed table 134 in the transport direction T of the feeder individually fed to the undercut device 132
  • Sheet 51 a plurality of blow nozzles 136; 137 are arranged.
  • the sheet 51 in the transport direction T, the sheet 51 is one behind the other and in each case transversely to the transport direction T, the sheet 51 is at least two rows of several blowing nozzles 136; 137, ie rows of blowing nozzles arranged.
  • a respective blowing direction of the blowing nozzles 136; 137 is directed essentially parallel to the feed table 134 against the transport direction T of the sheet 51 and into the 30 and 31 indicated by arrows.
  • the respective blowing direction of the blowing nozzles 136; 137 is e.g. B. by at least one channeling the flow of the blowing air, in each case on the relevant blowing nozzle 136; 137 arranged and / or molded guide surface 144 fixed.
  • the respective guide surface 144 is on the feed table 18; 134 facing side of the blow box 133 z. B. formed as a protruding from this blow box 133 ramp.
  • One from the respective blowing nozzles 136; Blowing air flowing out 137 is preferably through adjustable valves 138; 139 e.g. B. controlled in time and / or in intensity, the valves 138; 139 e.g. B. from one preferably digital control unit 61 executing a program are controlled.
  • the valves 138; 139 are e.g. B. switched by the control unit 61, in particular in one cycle, a cycle duration and / or a cycle frequency preferably being set as a function of the feed of the sheet 51 supplied to the under-shedding device 132.
  • the sheet 51 is in a region between the feed table 18; 134 and the feed table 18; 134 facing side of the blow box 133 in front of the first blow nozzle 136 or the first row of blow nozzles, a partition plate 141 is arranged, the partition plate 141 being the leading edge of a sheet 51 which prevents the blow air from at least one of the blow nozzles 136; 137 directly follows raised sheet 51, against the blow nozzles 136; Shields 137 induced suction.
  • the bulkhead plate 141 preferably has a concave curvature at its end in the blowing direction, this curvature of the blow air being one from the feed table 18; 134 facing away, that is directed away flow direction.
  • the front edge of the sheet 51 remains, which one of the blowing air from at least one of the blowing nozzles 136; 137 directly follows raised sheet 51 until it is unaffected until the raised sheet 51, through its own movement progress or feed directed in the direction of transport T, exposes with its rear end the blowing nozzle 136 or blowing nozzle row first reached by this sheet 51.
  • blow nozzles 136; 137 or rows of blowing nozzles raised sheet 51 is due to the suction effect caused by the respective blowing air (Venturi effect) above the feed table 18; 134 into a certain, e.g. B. by a distance from the feed table 18; 134 facing side of the blow box 133, the measured suspension height SH is raised, the suspension height SH being dependent on the intensity of the respective blowing air and / or on the mass of the sheet 51 in question and / or on the transport speed of the sheet 51 in question.
  • the suspension height SH being dependent on the intensity of the respective blowing air and / or on the mass of the sheet 51 in question and / or on the transport speed of the sheet 51 in question.
  • a support sheet 142 supporting the raised sheet 51 is provided, the z. B. at an acute angle to that of the feed table 18; 134 facing side of the blow box 133 arranged support plate 142 z. B. is in the form of an air-permeable lattice.
  • the sheet 51 raised by the suction of the blown air and placed against the support plate 142 is guided there in a quiet movement, ie without fluttering, in its transport direction T along this support plate 142.
  • holes 143 are e.g. B. circular with a diameter d143 in the range of a few millimeters.
  • Fig. 13 shows schematically in a simplified representation and by way of example a transport device for the sequential transport of individual sheet-shaped substrates, wherein these substrates are each preferably designed as a sheet 51, in particular a printed sheet.
  • This transport device is preferably between two successive processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 of a machine processing sheets 51, one of these processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12, e.g. B.
  • the second processing station T in the transport direction T of the sheet 51 in question is designed in particular as a non-impact printing device 06, preferably as at least one inkjet printing device.
  • the based on the Fig. 13 Transport device described is as a sheet 51 transporting assembly z. B. formed within one of the previously described production lines and corresponds e.g. B. with the previously described conveyor belt with the item number 17 or 27.
  • the based on the Fig. 13 Described transport device for the sequential transport of individual arcuate substrates has at least one endlessly rotating suction belt 52, the at least one suction belt 52 z. B. is arranged between at least two spaced-apart deflection rollers 53.
  • the at least one suction belt 52 has in the in the Fig. 13 by means of an arrow indicated the transport direction T of the sheet 51 one behind the other two surface areas of different design, the surface 56 being closed by one of these surface areas and the surface 57 being perforated by the other of these surface areas.
  • These two surface areas alternate along the circumference of the suction belt 52, ie they are arranged alternately in the circumferential direction of the suction belt 52 in question and thus in the transport direction T of the sheet 51.
  • the sheet 51 to be transported is partly lying flat on the closed surface 56 of the suction belt 52 in question and partly on the perforated surface 07 of the same suction belt 52.
  • the at least one suction belt 52 slides z. B. over a preferably table-shaped surface 69 of at least one of these suction chambers 58; 59.
  • the first suction chamber 58 in the transport direction T of the sheet 51 to be transported is arranged in the region of a load strand 54 of the suction belt 52 in question, whereas the second suction chamber 59 in the transport direction T of the sheet 51 to be transported is either also in the region of the load strand 54 of the suction belt 52 in question the first suction chamber 58 in the transport direction T of the sheet 51 to be transported, or else in the transport direction T of the sheet 51 to be transported after the area of the load strand 54 of the suction belt 52 in question, that is to say the suction belt 52 in question in the transport direction T of the sheet 51 to be transported .
  • a strand is a free, non-lying section of a running, preferably endlessly revolving tension member, the tension member z. B. is designed as a chain, rope, belt or belt, in particular toothed belt. If the traction element is designed as a chain, the at least one chain is z. B. guided in a chain rail.
  • the load strand is the side of the pulling element that is pulled and tight, whereas an empty strand is the loose, undrawn and sagging strand.
  • the first suction chamber 58 in the transport direction T of the sheet 51 generally has a much larger, in particular at least twice as large volume as the second suction chamber 59 in the transport direction T of the sheet 51 Transport direction T of the sheet 51 to be transported first suction chamber 58, the negative pressure prevailing permanently and a vacuum prevailing in the transport direction T of the sheet 51 in question, the vacuum chamber 59 is clocked, ie this negative pressure is alternately switched on or off for an adjustable duration.
  • the in the transport direction T of the sheet 51 second suction chamber 59 is therefore designed to be comparatively small in volume, in order in view of the transport speed applicable to the sheet 51 of in particular several thousand, eg. B. 10,000 to 18,000 sheets 51 per hour build up a vacuum faster and with respect to the pressure build-up and pressure reduction in the second suction chamber 59 to be able to achieve a higher clock rate.
  • this sheet 51 is sucked onto the at least one circumferential suction belt 52 when the perforated surface 57 of the suction belt 52 in question has at least one of the suction chambers 58; 59 is in operative connection.
  • a clocking of the negative pressure of the second suction chamber 59 in the transport direction T of the sheet 51 is synchronized with a sweeping over of the perforated surface 57 of the relevant suction belt 52 covered by the sheet 51 to be transported.
  • a rotational speed v of the relevant suction belt 52 is set by the preferably digital control unit 61 executing a program with a drive 62 which sets this suction belt 52 in motion.
  • This control unit 61 preferably also controls or regulates the aforementioned synchronization of the negative pressure in the second suction chamber 59 in the transport direction T of the sheet 51 by sweeping over the perforated surface 57 of this suction tape 52 covered by the sheet 51. B. by means of a valve 67.
  • the preferably controllable valve 67 is, for. B. arranged in a line that the second suction chamber 59 with a z. B. from the control unit 61 controlled pump (not shown).
  • the drive 62 which is preferably designed as an electric motor, acts, for. B.
  • the drive 62 which sets the rotational speed v of the suction belt 52 in question is preferably controlled by the control unit 61.
  • a discontinuous circulation speed v of the relevant suction belt 52 is preferably set by the control unit 61, i. H. Due to the regulation of the drive 62, the rotational speed v of the suction belt 52 in question is accelerated or decelerated in phases, in deviation from an otherwise uniform speed.
  • At least one register mark 63 is arranged in each case at at least one position of the relevant suction belt 52.
  • a Sensor 54 detecting the relevant register mark 53 is provided and connected to the control unit 61.
  • the circulation speed v of the suction belt 52 in question is controlled by the control unit 61, preferably as a function of a z. B. determined by the control unit 61 between a corresponding to an actual rotational speed generated by the sensor 64 generated first signal s1 and a corresponding to a desired rotational speed second signal s2.
  • the second signal s2, which indicates the target circulation speed of the relevant rotating suction belt 52 is, for. B. tapped from a (not shown) parent machine control.
  • the sensor 64 which detects the relevant register mark 63 is arranged in particular in the region of an empty run 66 of the relevant suction belt 52.
  • the sensor 64 which detects the relevant register mark 63 is designed as a the relevant register mark 63 z. B. optically or inductively or capacitively or electromagnetically or with ultrasound sensing sensor 64.
  • the register mark 63 corresponds to the respective design of the sensor 64 z. B. as an applied to the suction belt 52 optical signal surface or as a magnetic stripe on the suction belt 52 or as a recess or perforation in the suction belt 52 or as an arranged in the suction belt 52 signaling body.
  • a point in time at which the control unit 61 regulates the rotational speed v of the suction belt 52 in question is preferably synchronized with the sweeping over of the perforated surface 57 of the suction belt 52 covered by the sheet 51 to be transported.
  • the transport device for the sequential transport of individual sheet-like substrates or sheets 51 has at least one stationary suction chamber 58; 59 with a surface 69, which is preferably table-shaped in the area of the load strand 54, a preferably single, in particular at least partially perforated, endlessly rotating suction belt 52 passing over the sheet-shaped substrate in question, ie preferably a sheet 51, during transport thereof
  • Surface 69 is moving, in particular slidably arranged, the relevant suction chamber 58; 59 in the area of the load strand 54 of the suction belt 52 is covered by the table-shaped surface 69.
  • This table-shaped surface 69 is, for. B. realized by a table plate.
  • This suction belt 52 which holds the sheet 51 in question during its transport, is arranged in particular centrally with respect to the width b51 of the sheet 51 oriented orthogonally to the transport direction T and / or also centrally with respect to a width b69 of the table-shaped surface 69 oriented orthogonally to the transport direction T. .
  • a width b52 of the suction belt 52 oriented orthogonally to the transport direction T is smaller than the width b51 of the relevant sheet 51 to be transported orthogonal to the transport direction T and also smaller than the width b69 of the table-shaped surface 69 oriented orthogonal to the transport direction T.
  • the orthogonal width b52 of the suction belt 52 directed towards the transport direction T is z. B.
  • At least two blow-suction nozzles 68 are arranged in at least two of the areas of table-shaped surface 69 that are not covered by suction tape 52.
  • An air flow emerging from the respective blowing / suction nozzle 68 is, for. B.
  • the relevant blowing-suction nozzle 68 allowing air to flow against the underside of the relevant sheet 51 during transport, thereby causing a Air cushion between the bottom of the relevant sheet 51 to be transported and the table-shaped surface 69 is built up or at least can be built up.
  • the blow-suction nozzles 68 are each designed as a Venturi nozzle, the Venturi nozzle sucking in a side region of the relevant sheet 51 to be transported by a negative pressure in the direction of the table-shaped surface 69.
  • the blow-suction nozzles 68 are preferably each arranged in the table-shaped surface 69.
  • FIG. 14 An exemplary embodiment of the blow-suction nozzles 68 is shown in FIG Fig. 14 in a plan view with two corresponding side views, the blow-suction nozzle 68 shown z. B. is in the form of a slot nozzle, an opening 49 of this slot nozzle preferably as a cross-section z. B. rectangular section of a preferably cylindrical or conical lateral surface is formed, wherein a length l49 in or parallel to the table-shaped surface 69 of this section is at least three times, preferably ten times greater than its height h49 perpendicular to the table-shaped surface 69, whereby the length l49 of this opening 49 in the preferred embodiment extends along an arc of an inner circumferential line of an annulus.
  • the height h49 is approximately 1 mm and the length l49 of this opening 49 formed along an arc line is more than 10 mm.
  • An air flow LS emerging from the relevant blow-suction nozzles 68 is preferably in a particular by a shape of a z. B. directed ramp-shaped guide surface certain direction, this guide surface z. B. is formed by an outwardly widening portion of the aforementioned circular ring.
  • a blowing direction B of the blowing-suction nozzles 68 is preferably inclined in the transport direction T of the sheet 51 to be transported at an angle ⁇ in the range from 30 ° to 60 °, preferably at an angle ⁇ of 45 ° directed outside, as exemplified in the Fig.
  • the blow-suction nozzles 68 are e.g. B.
  • FIG. 15 and 16 A preferred arrangement of the blow-suction nozzles 68 in the table-shaped surface 69 with respect to a position of a gripper carriage 23 moved by the chain conveyor 16 is shown in FIG Fig. 15 and 16 , wherein this position is in particular the one at which the gripper carriage 23 in question delivers or transfers a sheet 51 transported by it to the suction belt 52 for further transport.
  • the transport device for the sequential transport of individual sheet-shaped substrates which has the central suction belt 52 and blow-suction nozzles 68 in the edge region, can advantageously be used when the sheets 51 to be transported are surface-coated and these surface-coated sheets 51 are still in their moist state by the transport device described above e.g. B. can be removed from a chain conveyor 16.
  • the proposed solution not only saves further suction belts 78 to be arranged parallel to the centrally arranged suction belt 52, but also avoids those problems which would have to be solved by synchronizing these further suction belts 78 to the centrally arranged suction belt 52.
  • blow-suction nozzles 68 ensure that a front edge of the sheets 51, after its respective release by the gripper carriage 23 in question, is moved from the level of a gripper impact level to a level of floating, ie a few millimeters above the table-shaped surface 69, and that the respective front edge of the sheet 51 in question released by the gripper at the level of the table trained surface 69 remains. Without the blow-suction nozzles 68 there is a high speed of z. B. more than 10,000 pieces per hour transported sheet 51 the risk that the respective released or in the case of scaly transported sheet 51 freely pushed leading edge of the sheet 51 in question experiences a lift by an air wedge and lifts again. In addition, in the case of limp sheets 51 or substrates in which only limited internal transverse forces are transmitted from the center belt to the outer edge regions of the substrate in question, these outer edge regions are supported in their respective conveying components by the air friction caused by the air flow LS.
  • Fig. 17 shows a section of a perspective view of a chain conveyor 16.
  • This chain conveyor 16 is, for. B. in a machine arrangement with several processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 each arranged for processing arcuate substrates 51, preferably at the rear end in the transport direction T of the arcuate substrates 51 guided through the machine arrangement of a processing station 02 designed as a primer application device 02 or as an offset printing device 04; 04, the chain conveyor 16 in the previous processing station 02; 04 processed sheet-shaped substrates 51 individually in a sequential transport to a next processing station 06, this next processing station 06 z. B.
  • the offset printing device 04 is designed as a sheet-fed offset printing machine and / or the non-impact printing device 06 z. B. formed as at least one inkjet printing device. In such a machine arrangement, there is the problem that in the previous z. B. designed as an offset printing device 04 processing station 02; 04 machined arcuate substrates 51 of the z. B.
  • the arcuate substrates 51 are each transported individually with a gripper carriage 23 moving along a movement path ( Fig. 10 and 11 ), the respective gripper carriage 23 generally being guided along two spaced-apart chain tracks 77 running parallel to one another along its movement path.
  • the relevant substrate 51 to be transported is held in particular on an edge extending longitudinally to the relevant gripper carriage 23, ie on the front edge of this substrate 51, by at least one holding means 79 arranged on this gripper carriage 23, ie on the at least one gripper.
  • the gripper carriage 23 in question is in the takeover area arranged at a specific position of its movement path, in which the gripper carriage 23 in question receives the respective substrate 51 to be transported, and / or in the transfer area arranged at a specific position in its movement path, in which the gripper carriage concerned 23 delivers the substrate 51 transported in each case in particular to the other transport device, e.g. B. is guided by at least one guide element 71 arranged between the spaced chain tracks 77 along the movement path of the gripper carriage 23 in question, the other transport device interacting with the chain conveyor 16 being designed in particular as a conveyor belt 17 ( Fig. 11 ).
  • the respective at least one guide element 71 be arranged in a fixed manner in the takeover area or in the transfer area between the spaced chain tracks 77 and the gripper carriage 23 guided along the spaced chain tracks 77 by means of of the concerned Guide element 71 to fix transverse to the path of movement.
  • This fixation is preferably carried out by the fact that on the respective gripper carriages 23 there are two rollers 72; 73 having a pair of rollers is arranged, the guide element 71 in question at least in the takeover area or in the transfer area in each case through a gap between the respective running surfaces of the two rollers 72; 73 of the relevant pair of rollers is guided.
  • the at least one guide element 71 is preferably designed as a rigid rail and / or has a wedge-shaped run 74.
  • the relevant guide element 71 is, for. B. integrally formed and extends z. B. from the transfer area to the transfer area of the chain conveyor 16.
  • the respective running surfaces of the rollers 72; 73 of the relevant roller pair roll z. B. on both sides of the relevant z. B. formed as a rail guide element 71 from ( 17 to 19 ).
  • endless conveyor chains are arranged along the chain tracks 77, wherein these conveyor chains are each driven by at least one chain wheel 81.
  • the sprocket 24 preferably located at one end of the chain conveyor 16 either in the take-over area or in the transfer area; 81 of the one chain track 77 and the chain wheel 24 arranged at the same end of the chain conveyor 16 in the same area; 81 of the other chain track 77 are preferably rigidly connected to one another by a common shaft 89.
  • the guide element 71 in question in cooperation with the pair of rollers, fixes the respective gripper carriage 23, which is guided along the spaced chain tracks 77, laterally, ie blocks its degree of freedom directed transversely to the movement path.
  • the lateral positioning of the substrates 51 is improved in that both in the transfer area, in which the substrates 51 are each taken over by one of the gripper carriages 23, and in the transfer area, in which the substrates 51 transported by the chain conveyor 16 from the respective gripper carriage 23 to the transfer belt 17 are transferred, the respective gripper carriage 23 is aligned by a guide element 71 ( Fig. 10 ).
  • These guide elements 71 are either separate from one another separate guide elements 71 or coherent as a one-piece guide element 71.
  • the following method can advantageously be used for operating a single sheet-like substrate 51 of a processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 carry out sequentially feeding transport device in which, by means of a control device cooperating with the transport device, each substrate 51 is reached before it reaches the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 whose actual position in the transport plane 29 is determined automatically and automatically with a for the substrate 51 in question in this processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 intended target position is compared.
  • the substrate 51 in question is aligned by a transport element of the transport device controlled by the control device in such a way that the substrate 51 in question is reached before it reaches the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 its in this processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 intended position occupies.
  • the substrate 51 in question is aligned solely by the transport element in the transport plane 29 both in the transport direction T and transversely thereto and about a pivot point lying in the transport plane 29. This means that in this embodiment variant, mechanical stops in particular are not involved in the alignment of the substrate 51 in question for the operation of the transport device.
  • the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12, to which the relevant substrate 51 is fed and aligned with respect to its desired position, is preferably designed as a non-impact printing device.
  • the substrate 51 in question is preferably non-positively by the transport element, for. B. held by suction air or by clamping and in this operating state held by the transport element with respect to the substrate 51 in the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 provided target position aligned.
  • a transport element in particular a suction drum 32 or a suction belt 52; 78 used.
  • the transport element transports each of the substrates 51 individually.
  • the control device z. B. the control unit and at least one of the connected z. B.
  • optical sensors 33; 36, the sensors 33; 36 with regard to the detection of the actual position of the substrate 51 z. B. are designed as a side edge sensor and / or as a leading edge sensor.
  • the target position, with respect to which the substrate 51 in question is to be aligned, is or is stored in the control unit and / or z. B. preferably stored changeable by a program.
  • the transport element is driven by a first drive moving the relevant substrate 51 in its transport direction T and by a second drive moving the relevant substrate 51 transversely to its transport direction T and by a third drive rotating the relevant substrate 51 about the pivot point lying in the transport plane 29 , these z. B.
  • each as a motor in particular as a preferably electric servomotor designed drives each controlled by the control device, that is, by the control unit.
  • the transport element is driven by its three drives in particular simultaneously.
  • the substrate 51 in question is moved by the transport device at a transport speed of the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 supplied and preferably aligned while maintaining this transport speed in the event of a deviation of the actual position from the target position.
  • the transport element as a suction belt 52; 78 corresponds to the transport speed at which the relevant substrate 51 corresponds to the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 is supplied, for. B. the rotational speed v of this suction belt 52; 78.
  • FIG. 20 An exemplary embodiment for carrying out the aforementioned method for operating a single sheet-like substrate 51 of a processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 sequentially feeding transport device is in the Fig. 20 and 21 shown, a suction drum 32 being used as the transport element in this example.
  • Fig. 20 shows an enlarged detail from the Fig. 11 , however in this further embodiment of the transport device in contrast to the execution of the transport device according to the Fig. 11 a stop 34 formed on the suction drum 32 is not provided.
  • the suction drum 32 has a first drive 91 for its circumferential movement and a second drive 92 for its axial movement and a third drive 93 for a pivoting movement of the axis of rotation 96 of the suction drum 32 which is executed or at least executable about an axis of rotation 94 perpendicular to the transport plane 29, whereby these three drives 91; 92; 93 each z. B. are designed as a preferably electric servomotor.
  • the suction drum 32 is with its first drive 91 z. B. stored in a first frame 97, this first frame 97 in turn z. B.
  • the rotary movement or pivoting movement of the axis of rotation 96 of the suction drum 32 which is carried out about the axis of rotation 94 perpendicular to the transport plane 29, takes place by means of the third drive 93, which acts on the first frame 97 when it is actuated, away from the machine center M, and in this way has a diagonal orientation of the substrate 51 held by the suction drum 32.
  • the second frame 99 carrying the first frame 97 is in turn arranged in or on a third frame 101, the second frame 99 being movable in or on the third frame 101 when the second drive 92 is actuated, in particular, transversely to the transport direction T of the substrate 51 in question is movable.
  • the second frame 99 in or on the third frame 101 in a z. B. prism-shaped guide element 102 guided linearly.
  • Fig. 21 shows the in the Fig. 20 Transport device shown again in a plan view, the orientation of the substrate 51 in each case carried out or at least executable with the suction drum 32 in its transport direction T as well as transversely thereto and by an angle of rotation lying in the transport plane 29 each indicated by a double arrow.
  • Another method for operating a device for transporting sheet-like substrates 51 likewise uses a transport element which conveys the substrate 51 in question in its transport plane 29, the transport element transporting the substrate 51 in question to a processing station 02 downstream of the transport element in the transport direction T of the substrate 51 concerned; 03; 04; 06; 07; 08; 09; 11; 12 feeds in register, this processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 z. B. is designed as a non-impact printing device 06.
  • a suction drum 32 with a plurality of suction rings 76 arranged axially next to one another, each designed as a holding element, or an arrangement of a plurality of suction belts 52, each running along the transport direction T of the substrate 51 in question and arranged transversely to the transport direction T of the substrate 51 in question, is preferably used as the transport element; 78 used.
  • the transport element for transporting the substrate 51 in question therefore always uses a plurality of holding elements which are spaced apart from one another transversely to its transport direction T, the substrate 51 in question being held non-positively by at least two of these holding elements in each case up to an output position related to the transport plane 29.
  • the respective output positions of all holding elements holding the substrate 51 in a force-fitting manner are on the same straight line 103.
  • a diagonal register of the substrate 51 in question is set with the transport element.
  • the diagonal register of the substrate 51 in question is adjusted by adjusting an angle of rotation ⁇ of this straight line 103 perpendicular to the Transport plane 29 standing axis of rotation 94 set, the angle of rotation ⁇ of this straight line 103 corresponding to the diagonal register to be set of the substrate 51 in question being actuated by a control unit actuation of a single mechanical coupling element acting simultaneously on all holding elements holding the substrate 51 in question, whereby the respective Output position of at least one of the holding elements holding the substrate in question non-positively is changed by the mechanical coupling element acting on the holding element in question.
  • the holding elements holding the relevant substrate 51 in a force-locking manner impress the respective substrate 51 with a transport speed which differs from holding element to holding element, the transport speed impressed on the respective substrate 51 by the respective holding element depending on the driven position set for the respective holding element.
  • a mechanical coupling element for. B. uses a linear gear member with rocker arms and / or with wheel coupling gears, with each of the substrate 51 holding force-locking holding elements is assigned either a rocker arm or a wheel coupling gear.
  • the proposed method for operating a device for transporting sheet-shaped substrates has the advantage that to set the diagonal register in the transport device, the transport element in question is not inclined and therefore a z. B. already set side register and / or axial register of the substrate in question cannot be negatively influenced by the setting of the diagonal register. Rather, between the holding elements of the transport element involved in the setting of the diagonal register, a differential speed which is dependent on the respective position of the respective holding element is set by actuating a single actuator, as a result of which the substrate in question is aligned in accordance with the desired diagonal register.
  • the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 substrate 51 to be fed in register, before it reaches the transport element, determines its actual position in its transport plane 29 and with one for the substrate 51 in question in the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 provided target position compared, wherein in the event of a deviation of the actual position from the target position, the control unit controls a drive 93 adjusting the mechanical coupling element in such a way that the substrate 51 in question, when the respective output positions of all holding elements holding the substrate in question non-positively, reach its position in the processing station 02; 03; 04; 06; 07; 08; 09; 11; 12 takes the intended position with respect to the diagonal register.
  • FIG. 22 shows a plan view of an arcuate substrate 51, in particular an arc 51, with a width b51 directed transversely to its transport direction T.
  • Transversely to its transport direction T are also several, for. B. five holding elements z. B. arranged in the form of juxtaposed suction rings 76 of a suction drum 32, these holding elements holding the substrate 51 in question in the transport plane 29 in a force-locking manner, in particular by a vacuum.
  • One of these several holding elements is e.g. B.
  • two further holding elements are arranged on the right and left of the machine center M.
  • On the left side in the transport direction T of the substrate 51 in question are one of the holding elements closer to the machine center M at a distance aS11 and one from the Machine center M further of the holding elements are arranged at a distance aS12 and on the right-hand side in the transport direction T of the relevant substrate 51, one of the holding elements closer to the machine center M is arranged at a distance aS21 and one further from the machine center M of the holding elements is arranged at a distance aS22.
  • the respective rotation planes of all the holding elements holding the substrate 51 in a force-locking manner are each arranged parallel to one another and in each case along the transport direction T of the substrate 51 in question.
  • the substrate 51 in question is non-positively held when it is transported by at least two of these holding elements up to an output position related to the transport plane 29, the respective output positions of all the holding elements holding the substrate 51 in question non-positively being located on the same straight line 103.
  • the respective output positions of all holding elements holding this substrate 51 in a force-locking manner are in the present example with the reference symbols P11; P12; P21; P22 designates, whereas in the desired position of the substrate 51 in question, the respective output positions of all holding elements holding this substrate 51 non-positively in the present example with the reference symbols S11; S12; S21; S22 are designated.
  • the substrate 51 in question is rotated by an angle of rotation ⁇ about an axis of rotation 94 which is perpendicular to the transport plane 29, which is done thereby that the straight line 103 is rotated by this angle of rotation ⁇ , which in turn takes place in that the respective output position of at least one of the holding elements holding the substrate 51 non-positively is changed by the mechanical coupling element acting on the holding element in question.
  • the angle of rotation ⁇ is usually in the range of only a few degrees, e.g. B. between greater than zero and less than 30 °, in particular less than 10 °.
  • the axis of rotation 94 which is perpendicular to the transport plane 29 is preferably arranged in the machine center M.
  • the driven position of the holding element arranged in the machine center M remains unchanged, whereas the mechanical coupling element acting jointly on the respective holding elements in each case leads the output positions of the relevant holding elements arranged on the right of the machine center M to the right with respect to their respective rotational speed v, and each arranged to the left of the machine center M.
  • Output positions of the relevant holding elements can be set lagging with respect to their rotational speed v.
  • the holding elements holding the substrate 51 in a force-fitting manner and adjusted to their respective rotational speed v imprint the respective substrate 51 with a transport speed which differs from holding element to holding element during the execution of the position correction, the transport speed impressed on the substrate 51 in question by the respective holding element in each case by the output position S11 set for the respective holding element, that is to say corresponding to the desired position of the substrate 51 concerned; S12; S21; S22 is dependent.
  • the Fig. 23 and 24th show an embodiment of the mechanical coupling element z. B. in the form of a linear gear link with rocker arms.
  • the Fig. 25 and 26 show an embodiment of the mechanical coupling element z. B. in the form of a linear transmission link with gear coupling.
  • all of the holding elements holding the relevant substrate 51 in a force-locking manner are in each case either according to the Fig. 23 and 24th a rocker arm or according to the Fig. 25 and 26 a wheel coupling gear assigned. Similar to that in the Fig. 20 the arrangement shown is in the 23 to 26 shown suction drum 32 z. B. stored in a first frame 97, this first frame 97 in turn z. B.
  • the first frame 97 forms the mechanical coupling element which acts on the holding elements in question, in particular as a preferably electric servomotor trained drive 93 is provided for executing the rotary movement of the mechanical coupling element about the axis of rotation 94 perpendicular to the transport plane 29.
  • the drive 93 When actuated by the control unit, the drive 93 preferably acts via a joint 104 on the first frame 97 forming the mechanical coupling element.
  • the second frame 99 has at least two diametrically opposed frame walls 106, in which frame walls 106 one parallel to the suction drum 32 extending drive shaft 107 z. B. is rotatably supported at both ends.
  • a plurality of rocker arms 108 are preferably arranged on the drive shaft 107, each of these rocker arms 108 each belonging to one of the z. B. is formed as a suction ring 76 holding elements in an operative connection.
  • the respective rocker arms 108 are each connected in a rotationally fixed manner to the drive shaft 107, so that the drive shaft 107 for the respective rocker arms 108 each form a hinge point fixed to the frame.
  • each of the relevant rocker arms 108 thus acts driven by the drive shaft 107, possibly via a drive pinion 113 with one of its ends, for. B. its upper end on one of the holding elements.
  • each of these rocker arms 108 is at its other ends, e.g. B. its lower end each preferably on both ends at further z. B. formed as a ball joint 111; 112 mounted coupler 109 connected to the first frame 97 such that an angle position of the rocker arms 108 connected to the drive shaft 107 can be set or at least adjusted with the drive 93.
  • the variant according to the Fig. 25 and 26 is the variant according to Fig. 23 and 24th very similar, so that the same components are provided with the same reference numerals.
  • the variant according to the Fig. 25 and 26 differs from the variant according to Fig. 23 and 24th characterized in that a pair of coupling wheels 114 is provided, which is coupled to one another via a wheel coupling 116, a drive pinion 117 introducing a torque into the coupling wheel pair 114 and an output pinion 118 the torque introduced into the coupling wheel pair 114 to the relevant holding element for adjusting its angular position transmits.
  • the pair of coupling wheels 114 together with the drive pinion 117 and the output pinion 118 form a wheel coupling gear.
  • Fig. 27 shows a further machine arrangement with several usually different processing stations for sequential processing of several sheet-like substrates.
  • the flat substrates each having a front and a back, are z. B. gripped by a suction head 41 and individually by means of a vibrating gripper 13 to a transfer drum 14 and from there to a rotating contact pressure cylinder 119, this contact pressure cylinder 119 on its outer surface in each case at least one of these substrates or also several, for. B. receives two or three substrates arranged one behind the other in the circumferential direction.
  • Each of the substrates to be transported is on the outer surface of the system pressure cylinder 119 by means of at least one z. B. held as a gripper holding element.
  • limp and / or thin substrates with a thickness of z. B. up to 0.1 mm or a maximum of 0.2 mm z. B. can also be held by suction air on the lateral surface of the contact pressure cylinder 119, with such a substrate resting on the lateral surface of the contact pressure cylinder 119, in particular on the edges of this substrate, for. B. is supported by blowing air directed in particular radially onto the lateral surface of the contact pressure cylinder 119.
  • On the system pressure cylinder 119 is in the direction of rotation, which in the Fig.
  • the contact pressure cylinder 119 transfers a substrate primed on both sides to a first, in particular endlessly rotating, transport device having at least one traction element, e.g. B. to a first chain conveyor 16, the first chain conveyor 16 transports this substrate to a first non-impact printing device 06, this first non-impact printing device 06 at least partially printing on the front of the substrate in question.
  • the first non-impact printing device 06 transmits the substrate printed on the front side to a second, in particular endlessly rotating transport device having at least one traction element, e.g. B. to a second chain conveyor 21, this second chain conveyor 21 the substrate in question z. B. in the area of its first sprocket 81 ( Fig. 10 ) records.
  • a second non-impact printing device 127 is arranged, this second non-impact printing device 127 at least partially printing on the back of the relevant previously printed substrate.
  • the first non-impact printing device 06 and the second non-impact printing device 127 are thus arranged one after the other in the transport direction T of the respective arcuate substrate at different positions of the transport path of the substrate in question.
  • the relevant substrate now printed on both sides is then z. B. placed on a stack in a display 12.
  • the in the Fig. 27 or 28 shown machine arrangement processing the relevant substrate on both sides has in each case several, preferably four dryers 121; 122; 123; 124, namely a first dryer 121 for drying the primer applied to the front of the relevant substrate and a second dryer 122 for drying the primer applied to the rear of the relevant substrate.
  • a third dryer 123 for drying the relevant substrate printed on the front side with the first non-impact printing device 06 and a fourth dryer 124 for drying the relevant substrate printed on the rear side with the second non-impact printing device 127 are provided.
  • the z. B. identical trained dryer 121; 122; 123; 124 are the relevant substrate z. B.
  • the transport direction T of the relevant substrate transported by the machine arrangement is in the Fig. 27 each indicated by arrows.
  • the first non-impact printing device 06 and the second non-impact printing device 127 are each z. B. formed as at least one inkjet printing device.
  • a third transport device 128 is arranged in the area of action of the first non-impact printing device 06, which takes over the relevant substrate primed on both sides from the first transport device having at least one pulling element, transports it to the second transport device having at least one pulling element and delivers it to this second transport device.
  • the third transport device 128 transporting the relevant substrate in the area of action of the first non-impact printing device 06 is e.g. B. as a transport cylinder ( Fig. 27 ) or as a particularly endless conveyor belt ( Fig. 28 ), in the case of the transport cylinder, the preferably a plurality of inkjet printing devices of the first non-impact printing device 06 are each arranged radially to this transport cylinder and, in the case of the transport belt, the preferably a plurality of inkjet printing devices of the first non-impact printing device 06, in particular horizontally next to one another in parallel this conveyor belt are arranged.
  • the conveyor belt is e.g. B. as a suction belt 52 with at least one suction chamber 58; 59 trained ( Fig. 13 ).
  • the third transport device 128 transporting the relevant substrate in the area of action of the first non-impact printing device 06 and the second transport device having at least one traction member transporting the relevant substrate in the area of action of the second non-impact printing device 127 each preferably have a single drive 129; 131, these individual drives 129; 131 each z. B. as a regulated in its respective speed and / or angular position or at least controllable preferably electrically driven motor are formed, by means of which individual drives 129; 131 the printing of the substrate in question is synchronized on the front side by the first non-impact printing device 06 and on the rear side thereof by the second non-impact printing device 127 or at least can be synchronized.
  • the first dryer 121 for drying the primer applied to the front of the substrate in question for. B. in the area of the system pressure cylinder 119 ( Fig. 27 ) or in the area of a strand, in particular the load strand of the first transport device having at least one pulling element ( Fig. 28 ) arranged.
  • the second dryer 122 for drying the primer applied to the back of the substrate in question is preferably arranged in the region of a run, in particular the load run of the first transport device having at least one pulling element.
  • the third dryer 123 for drying the relevant substrate printed on the front side with the first non-impact printing device 06 is e.g. B.
  • the fourth dryer 124 for drying the relevant substrate printed on the back with the second non-impact printing device 127 is e.g. B. in the region of the downstream substrate in the transport direction T of the relevant substrate of the second non-impact printing device 127, the second at least one pulling device having transport device. If one of the dryers 121; 122; 123; 124 is arranged in a run by one of the transport devices, a length of its drying section determines a minimum length of the relevant run.
  • Each of these gripper carriages 23 is moved in the transport direction T of the substrate in question by the relevant at least one traction element of the transport device in question.
  • the gripper carriage 23 are in the transport direction T of the substrate in question, for. B.
  • the precision drive in question z. B. is in the form of a linear drive system, the precision drive in question the gripper carriage 23 in question and thus the relevant gripper carriage 23 in question non-positively held substrate with an accuracy of less than ⁇ 1 mm, preferably less than ⁇ 0.5 mm, in particular of less than ⁇ 0.1 mm on a along the transport path z. B. with regard to one of the non-impact printing devices 06; 127 predetermined position positioned.
  • a plurality of belts are preferably arranged between immediately successive gripper carts 23 at least along the transport direction T of the substrate in question, the substrate in question held by the relevant gripper car 23 to stabilize it at least in part during its transport rests on these tapes, which are preferably arranged parallel to one another.
  • belts arranged between successive gripper carriages 23 are arranged, in particular in a spring-loaded manner, along the transport direction T of the substrate in question or are formed from an elastic material.
  • the gripper carriages 23 are each arranged to stabilize their respective path of movement by at least one longitudinally to the path of movement of the gripper carriage 23 concerned, at least in the area of action of the first non-impact printing device 06 and / or in the area of action of the second non-impact printing device 127 Guide element 71 guided ( 17 to 19 ).
  • a register-containing and / or register-based guide in particular or at least in the area of action of the first non-impact printing device 06 and / or in the area of action of the second non-impact printing device 127, z. B. a catch mechanism for the gripper carriage 23 in question, this catch mechanism z. B.
  • the gripper carriage 23 in question z. B. held at its two transversely to the transport direction T of the gripper carriage 23 in the respective fork and through this in particular in its path of movement is guided and / or held in register. Furthermore, for register-containing and / or register-oriented alignment of the substrate in question, in particular or at least in or immediately before the area of action of the first non-impact printing device 06 and / or in or immediately before the area of action of the second non-impact printing device 127, z. B. an adjusting device, in particular a lateral positioning device is provided.
  • the substrate in question is, for. B. with the aid of sensors 33 sensing this substrate; 36 aligned and / or registered, such as i. V. m. of the Fig. 11 described.
  • the in the Fig. 27 or 28 The machine arrangement shown can also be described as a machine arrangement for the sequential processing of a plurality of sheet-shaped substrates each having a front side and a back side, a first non-impact printing device 06 and a second non-impact printing device 127 as well as a first primer application device 02 and a second primer application device 126 are provided, the first primer applicator 02 priming the front and the second primer applicator 126 priming the rear with respect to the same arcuate substrate, and the first non-impact printing device 06 printing the front primed by the first primer applicator 02 and the second non-impact printing device 127 which is arranged to print on the rear side primed by the second primer application device 126.
  • first dryer 121 for drying the primer applied to the front of the substrate in question in the transport direction T of the substrate in front of the first non-impact printing device 06 and a second dryer 122 for drying the primer applied on the back of the substrate in question in the transport direction T of the relevant substrate in front of the second non-impact printing device 127 and a third dryer 123 for drying the relevant substrate printed on the front side with the first non-impact printing device 06 in the transport direction T of the relevant substrate after the first non-impact printing device 06 and a fourth dryer 124 is provided for drying the relevant substrate printed on the rear side with the second non-impact printing device 127 in the transport direction T of the relevant substrate after the second non-impact printing device 127.
  • the second primer application device 126 can be arranged in the transport direction T of the substrate in question either before or after the second non-impact printing device 127.
  • the first dryer 121 for drying the primer applied to the front of the relevant substrate and / or the second dryer 122 for drying the primer applied on the rear of the relevant substrate and / or the third dryer 123 for drying the relevant with the first non-impact -Printer device 06 substrate printed on the front and / or the fourth dryer 124 for drying the relevant substrate printed on the back with the second non-impact printing device 127 are each, for. B.
  • At least one transport device transporting the substrate in question is provided, this transport device being designed as a transport cylinder or as a revolving transport belt or as a chain conveyor.
  • the at least one transport device transporting the substrate in question has at least one holding element, the at least one holding element being designed to hold the substrate in question by means of a force fit or by means of a form fit.
  • the Fig. 29 shows yet another advantageous machine arrangement for sequential processing of a plurality of sheet substrates each having a front side and a back side.
  • This machine arrangement which is preferably designed as a printing press, in particular as a sheet-fed printing press, has at least a first printing cylinder and a second printing cylinder.
  • At least one first non-impact printing device 06 which prints the front of the substrate in question, and in the direction of rotation of the first printing cylinder after the first non-impact printing device 06, are printed on the circumference of the first printing cylinder Front of the substrate drying dryer 123 and at least on the circumference of the second printing cylinder at least one second non-impact printing device 127 printing the back of the substrate in question and in the direction of rotation of the second printing cylinder after the second non-impact printing device 127 one of the second non Impact printing device 127 printed rear side of the substrate drying dryer 124 arranged.
  • the first non-impact printing device 06 and the second non-impact printing device 127 are e.g. B. each formed as at least one inkjet printing device.
  • the first non-impact printing device 06 and / or the second non-impact printing device 127 each print several, e.g. B. four Printing inks, in particular the printing inks yellow, magenta, cyan and black, wherein for each of these printing inks with respect to the relevant non-impact printing device 06; 127 each preferably a specific inkjet printing device is provided.
  • the first printing cylinder and the second printing cylinder are arranged to form a common nip, the first printing cylinder directly transferring the relevant front-printed and dried substrate to the second printing cylinder in this common nip.
  • a first primer application device 02 and a second primer application device 126 are also provided, with the first primer application device 02 priming the front and the second primer application device 126 priming the rear, with respect to the same arcuate substrate, the first non with respect to this substrate
  • Impact printing device 06 printing the front side primed by the first primer application device 02 and the second non-impact printing device 127 printing the rear side priming by the second primer application device 126.
  • the first primer application device 02 and the second primer application device 126 each have, for. B. a system pressure cylinder 119, wherein these two system pressure cylinders 119 are arranged forming a common nip, the system having the first primer application device 02 system pressure cylinder 119 in this common roller nip directly transfers the substrate in question to the system system having the second primer application device 126.
  • the system printing cylinder 119 having the second primer application device 126 and the first printing cylinder having the first non-impact printing device 06 are arranged to form a common nip, the system printing cylinder 119 having the second primer application device 126 directly contacting the substrate in question with the first non-impact Printing device 06 having the first printing cylinder passes.
  • a dryer 121 drying the front side of the substrate in question primed by this first primer application device 02 and / or on the circumference of the system printing cylinder 119 having the second primer application device 126 is i. d. R. immediately after the second primer application device 126 z.
  • a dryer 122 which is primed by this second primer application device 126 of the substrate in question.
  • the dryer 121 for drying the primer applied to the front of the substrate in question and / or the dryer 122 for drying the primer applied to the rear of the substrate in question and / or the dryer 123 for drying the one with the first non Impact printing device 06 substrate printed on the front and / or the dryer 124 for drying the relevant substrate printed on the back with the second non-impact printing device 127 each as a substrate that has been primed and / or printed by hot air and / or by irradiation with infrared or ultraviolet radiation drying dryer.
  • the primed and / or printed substrate in question is dryer 121 by irradiation with infrared or ultraviolet radiation; 122; 123; 124 formed as an LED dryer, i. H. as a dryer which generates the infrared or ultraviolet radiation in each case by means of semiconductor diodes.
  • the first pressure cylinder and the second pressure cylinder and the contact pressure cylinder 119 having the first primer application device 02 and the contact pressure cylinder 119 having the second primer application device 126 each preferably in a single drive train formed from gear wheels, i.e. connected to one another in a gear train and in their respective rotation together by a single one Drive driven, this drive preferably as a particularly speed-controlled and / or position-controlled electric motor is formed.
  • the first printing cylinder and the second printing cylinder and the system printing cylinder 119 having the first primer application device 02 and the system printing cylinder 119 having the second primer application device 126 are each, for. B. multi-sized, that is, several, z. B.
  • each of the substrates to be transported is attached to the outer surface of the first printing cylinder and / or the second printing cylinder and / or the system printing cylinder 119 having the first primer application device 02 and / or the system printing cylinder 119 having the second primer application device 126 by means of at least one z. B. designed as a gripper holding element non-positively and / or positively. In particular, limp and / or thin substrates with a thickness of z. B. up to 0.1 mm or a maximum of 0.2 mm can be non-positive z. B.
  • the relevant substrate printed on both sides is then preferably transported by means of a transport device z. B. transported to a display 12 and stored there in the display 12 on a stack.
  • the transport device adjoining the second pressure cylinder is e.g. B. formed as a chain conveyor, the substrate in question is preferably dried on both sides by at least one dryer 09 during its transport through this transport device before it is deposited in the delivery 12.
  • At least one further is connected to the second printing cylinder in front of the transport device transporting the substrate in question to the delivery 12.
  • the substrate in question can be processed on both sides, in particular can be printed, without the need for a turning device for this substrate in this machine arrangement.
  • the proposed machine arrangement is therefore very compact and inexpensive.
  • the in the Fig. 29 machine arrangement shown is particularly advantageous i. V. m. UV curing printing inks e.g. B. usable in packaging printing for food or cosmetics.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ink Jet (AREA)
  • Printing Methods (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (14)

  1. Dispositif de chevauchement de feuilles (51), présentant au moins un caisson de soufflage (133) et une table d'alimentation (134), dans lequel plusieurs feuilles (51) sont guidées successivement à distance les unes des autres sur la table d'alimentation (134) dans une zone du caisson de soufflage (133) dans une même direction de transport (T), dans lequel une buse de soufflage (136 ; 137) est disposée dans le caisson de soufflage (133) sur la face de celui-ci tournée vers la table d'alimentation (134), dans lequel la table d'alimentation (134) est disposée au-dessous du caisson de soufflage (133), caractérisé en ce que la direction de soufflage de la buse de soufflage (136 ; 137) est orientée parallèlement à la table d'alimentation (134) à l'encontre de la direction de transport (T) des feuilles (51), dans lequel plusieurs buses de soufflage (136 ; 137) sont disposées les unes derrière les autres dans le caisson de soufflage (133) sur la face de celui-ci tournée vers la table d'alimentation (134) dans la direction de transport (T) des feuilles (51), dans lequel une direction de soufflage respective des buses de soufflage (136 ; 137) est orientée parallèlement à la table d'alimentation (134) à l'encontre de la direction de transport (T) des feuilles (51), dans lequel une plaque d'appui (142) soutenant la feuille (51) soulevée est prévue dans une zone entre la table d'alimentation (134) et la face du caisson de soufflage (133) tournée vers cette table d'alimentation (134), dans lequel plusieurs ouvertures (143) sont prévues dans la table d'alimentation (134) au moins dans la zone par rapport au caisson de soufflage (133), ouvertures (143) à travers lesquelles l'air reflue sous la feuille (51) actuellement soulevée.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'au moins deux rangées de plusieurs buses de soufflage (136 ; 137) disposées respectivement les unes à côté des autres sont disposées l'une derrière l'autre dans la direction de transport (T) des feuilles (51) et respectivement transversalement à la direction de transport (T) des feuilles (51) .
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la direction de soufflage respective des buses de soufflage (136 ; 137) est définie par au moins une surface de guidage (144) canalisant respectivement le courant de l'air soufflé.
  4. Dispositif selon la revendication 1 ou 2 ou 3, caractérisé en ce qu'un air soufflé s'échappant des buses de soufflage (136 ; 137) respectives est commandé dans le temps et/ou en intensité par des soupapes (138 ; 139) réglables, dans lequel les soupapes (138 ; 139) sont commandées par une unité de commande (61).
  5. Dispositif selon la revendication 4, caractérisé en ce que les soupapes (138 ; 139) sont commutées en cadence par l'unité de commande (61), dans lequel une durée de cadence et/ou une fréquence de cadence est ou sont réglée(s) en fonction de l'avancement des feuilles (51).
  6. Dispositif selon la revendication 1 ou 2 ou 3 ou 4 ou 5, caractérisé en ce qu'une tôle de cloisonnement (141) est disposée dans la direction de transport (T) des feuilles (51), dans une zone entre la table d'alimentation (134) et la face du caisson de soufflage (133) tournée vers cette table d'alimentation (134), devant la première buse de soufflage (136) ou la première rangée de buses de soufflage, dans lequel la tôle de cloisonnement (141) protège le bord avant d'une feuille (51), qui suit directement une feuille (51) soulevée par l'air soufflé provenant d'au moins une des buses de soufflage (136 ; 137), contre un effet d'aspiration provoqué par les buses de soufflage (136 ; 137) disposées dans le caisson de soufflage (133).
  7. Dispositif selon la revendication 6, caractérisé en ce que la tôle de cloisonnement (141) présente à son extrémité située dans la direction de soufflage une courbure concave, dans lequel cette courbure donne à l'air soufflé une direction d'écoulement opposée à la table d'alimentation (134).
  8. Dispositif selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7, caractérisé en ce qu'une feuille (51) soulevée par les buses de soufflage (136 ; 137) est soulevée en raison de l'effet d'aspiration provoqué par l'air soufflé respectif au-dessus de la table d'alimentation (134) dans une hauteur de suspension (SH) mesurée par un écart par rapport à la face du caisson de soufflage (133) tournée vers la table d'alimentation (134), dans lequel la hauteur de suspension (SH) dépend de l'intensité de l'air soufflé respectif et/ou de la masse de la feuille (51) concernée et/ou de la vitesse de transport de la feuille (51) concernée.
  9. Dispositif selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8, caractérisé en ce que la plaque d'appui (142) est disposée en formant un angle aigu par rapport à la face du caisson de soufflage (133) tournée vers la table d'alimentation (134).
  10. Dispositif selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9, caractérisé en ce que la plaque d'appui (142) est réalisée sous la forme d'une grille.
  11. Dispositif selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9 ou 10, caractérisé en ce que les ouvertures (143) prévues dans la table d'alimentation (134) sont réalisées respectivement de manière circulaire avec un diamètre (d143) dans la plage de quelques millimètres.
  12. Dispositif selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9 ou 10 ou 11, caractérisé en ce que la table d'alimentation (134) est réalisée sous la forme d'une table de marge (18) disposée avant une sortie (12) des feuilles (51) dans la direction de transport (T) des feuilles (51) .
  13. Dispositif selon la revendication 1 ou 2 ou 3 ou 4 ou 5 ou 6 ou 7 ou 8 ou 9 ou 10 ou 11 ou 12, caractérisé en ce que ce dispositif est disposé dans la zone d'un système de transfert, système de transfert sur lequel les feuilles (51) sont transmises de manière à venir d'une station de traitement (01 ; 02 ; 03 ; 04 ; 06) située en amont à une station de traitement (07 ; 08 ; 09 ; 11 ; 12) située en aval.
  14. Dispositif selon la revendication 13, caractérisé en ce que la station de traitement (01 ; 02 ; 03 ; 04 ; 06) située en amont est réalisée sous la forme d'un dispositif d'impression (04 ; 06) et/ou que la station de traitement (07 ; 08 ; 09 ; 11 ; 12) située en aval est réalisée sous la forme d'un dispositif de retraitement mécanique (11).
EP17720450.0A 2016-04-29 2017-04-26 Dispositif permettant de faire se chevaucher des feuilles Active EP3448682B1 (fr)

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DE102016207397.4A DE102016207397A1 (de) 2016-04-29 2016-04-29 Vorrichtung zum Unterschuppen von Bogen
PCT/EP2017/059890 WO2017186772A1 (fr) 2016-04-29 2017-04-26 Dispositif de chevauchement de feuilles

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EP3448682A1 (fr) 2019-03-06
CN109070579B (zh) 2019-10-15
WO2017186772A1 (fr) 2017-11-02
US10486416B2 (en) 2019-11-26
US20190070846A1 (en) 2019-03-07
CN109070579A (zh) 2018-12-21

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