EP1818177B1 - Sheet rotary printing press - Google Patents
Sheet rotary printing press Download PDFInfo
- Publication number
- EP1818177B1 EP1818177B1 EP20070003120 EP07003120A EP1818177B1 EP 1818177 B1 EP1818177 B1 EP 1818177B1 EP 20070003120 EP20070003120 EP 20070003120 EP 07003120 A EP07003120 A EP 07003120A EP 1818177 B1 EP1818177 B1 EP 1818177B1
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- EP
- European Patent Office
- Prior art keywords
- sheet
- rotary
- printing machine
- machine according
- sheets
- 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.)
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Links
- 238000007639 printing Methods 0.000 title claims description 73
- 238000007689 inspection Methods 0.000 claims description 45
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000012546 transfer Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 9
- 241000196324 Embryophyta Species 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000004922 lacquer Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 241000252254 Catostomidae Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000008859 change Effects 0.000 description 1
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- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
-
- 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
- B41F21/10—Combinations of transfer drums and grippers
-
- 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
- B41F21/10—Combinations of transfer drums and grippers
- B41F21/102—Combinations of transfer drums and grippers with pneumatic means
Definitions
- the invention relates to a sheet-fed rotary printing machine in aggregate and series construction according to the preamble of the first claim.
- Sheet-fed presses with automatic inline sheet-fed inspection systems are known for the continuous control of print quality during printing. These consist of an image recording device (eg line camera), a lighting, a control, a control and an evaluation and optionally display devices (eg monitors). Furthermore, optical devices for spectral or densitometric color measurement are known. The inspection or color measuring devices optically scan the sheet, individual areas and / or selected measuring fields (scanning areas), while the sheet is located on a counter-pressure cylinder present in a printing or coating unit and held in grippers thereon.
- image recording device eg line camera
- lighting e.g., a lighting
- control e.g control
- control e.g monitors
- optical devices for spectral or densitometric color measurement are known.
- the inspection or color measuring devices optically scan the sheet, individual areas and / or selected measuring fields (scanning areas), while the sheet is located on a counter-pressure cylinder present in a printing or coating unit and held in grippers thereon
- Counter-pressure cylinders in printing or coating plants have the disadvantage that the sheets can be fixed only in the area of the leading edge gripper and in the area of the printing gap (by the pressure of the associated rubber or lacquer cylinder) and thus only there a precise image inspection without blurring or image information losses are accessible ,
- the rear sheet area must be fixed for sheet inspection after leaving the nip of blown air or mechanical sheet guiding on the printing cylinder.
- Another disadvantage is that the pressure of the printing unit located in the scanning of the image pickup device must be turned on to ensure a good inspection or measurement result, even if the plant is not used for printing. It comes thereby to the splitting of the colors on the blanket and construction of color as well as pushing and doubling of the printed image.
- the available space for sheet inspection for optical sheet scanning after the print zone is not present or severely limited.
- From the DE 10 2004 020 252 A1 is a device for conveying sheets by a printing machine known. There is disclosed a printing machine in a row construction, which has after the last printing unit and before the boom an imprinter comprising a printing cylinder. A disadvantage of this solution is that even here by the special design of the imprinting no flexible configuration of the printing press is possible.
- a sheet-fed rotary printing machine which is constructed of base modules that can be equipped with a printing unit, a coating unit or a drying plant.
- a multifunction module is arranged between the last base module and the sheet delivery, which module has a sheet guiding cylinder and a sheet conveying device.
- the module is for cultivation different accessories, for example, for perforating, punching, cutting, numbering, embossing, marking or for the installation of a measuring device for recording the print quality prepared.
- the attachable to the multifunction module measuring device is used to control the bow located on the upstream cylinder.
- a disadvantage of this solution is that the multifunction module can only be used before the sheet delivery, additional sheet guiding means for sheet inspection at the upstream plant are required and while the described limitations of the scanning must be accepted after printing or paint zones.
- the invention has for its object to improve the sheet guide in the scanning of sheet inspection facilities.
- At least one sheet guide mechanism is arranged at any point between the sheet system and the sheet delivery as a separate aggregate comprising at least one sheet-guiding rotary body for securing a full-surface sheet control and possibly a sheet marking.
- the rotary body is designed for a smooth sheet support on its lateral surface and to this means for fixing the sheet on its lateral surface in the region of the sheet leading edges and at least in another area, in which the sheets to be processed tend to spread from the lateral surface, so that the Arc are almost fixed over the entire surface or at least in the scanning.
- Equipment for sheet marking also require a constant distance from the sheet, so that when using marking devices, the sheet fixing means are also beneficial for ensuring a smooth sheet support in the marking area on the lateral surface of the rotating body.
- the sheet guiding mechanism according to the invention is advantageously designed such that both substrate sheet with high bending stiffness (eg cardboard) and very thin substrate sheets can be guided at a constant distance from the inspection, color measuring or marking device through the scanning area or marking area, without restricting the Having to accept acceptable sheet scanning range, as would be the case with an arc inspection in a printing, paint or drying plant.
- substrate sheet with high bending stiffness eg cardboard
- very thin substrate sheets can be guided at a constant distance from the inspection, color measuring or marking device through the scanning area or marking area, without restricting the Having to accept acceptable sheet scanning range, as would be the case with an arc inspection in a printing, paint or drying plant.
- the sheet guide IW according to the invention can be arranged at any point in a sheet-fed rotary printing press with a sheet feeder, one or more printing, coating and / or drying units W and a sheet delivery. It corresponds in its bow-guiding part of the dimensions and the connection configuration of the other printing, lacquer or drying units W, so that it can be upstream or downstream of any printing press unit W as a separate module. It is expedient to perform a sheet inspection for the detection of printed image defects, in particular before the sheet delivery ( Fig.1 ) or, in the case of double-sided printing, also after the printing of the first side, ie before the sheet turning device. In addition, a color measurement to control one or more upstream inking unit (s) may be required, the arrangement of the sheet guide IW after a color critical work ( Fig.2 ) or after the last inking unit required.
- the sheet guide IW is downstream of a printing unit W and in turn passes the controlled sheet B to a sheet delivery for storage on a sheet stack or to another printing W.
- To transport the sheet B at a constant distance to the sheet inspection device I is in the sheet guide IW at least a single, double or multiple large body of revolution R arranged with cylindrical surface M.
- the rotary body R is advantageously designed analogous to storage drums within turning devices in lightweight construction, has a torsionally rigid axis and is equipped with a radially braced, cylindrical outer surface M or with a cylindrical outer surface M forming shell segments. Useful modifications of this construction are included in the solution according to the invention.
- For fixing the sheet leading edges on the lateral surface M are compulsory means FV for fixing the sheet leading edge areas in the form of grippers ( Fig.1 ) mechanically clamping the sheets B between gripper fingers and gripper mounts, or suckers ( Fig.2 ) for holding the front arch portion by means of vacuum force.
- grippers Fig.1
- suckers Fig.2
- a multiply large rotation body R gripper or sucker are repeatedly arranged at the same distance along the circumference of the lateral surface M.
- particular thin substrates can also be used instead of grippers or suckers and freezers, in which a hydroadhesive adhesion of the printing material on the lateral surface M by applying water causing the sheet leading edge portion and subsequent cooling of the sheet leading edge region below the freezing point in contact with the lateral surface M.
- Peltier elements in the lateral surface M which are designed for rapid cooling and heating for sheet transfer to the downstream unit W, are used.
- the sheet B in non-pressure areas and / or in the side edge regions by means of mechanical sheet guiding means, in particular guide bar or guide rollers, are placed on the lateral surface M.
- a smooth sheet support particularly bending-resistant sheet B, which tend to bulge on the lateral surface M
- blower air blades or bubble guides which direct their jets of radiation radially on the sheet B and apply a line or surface pressure on the sheet B, in the transport direction before and after the scanning A / marking area K of the sheet inspection device I at a small distance from the lateral surface M and preferably arranged inclined to the transport direction.
- the peripheral sheet guiding means which obstruct the entire surface sheet inspection, can advantageously be fixed by means for sheet fixing, which are integrated in the rotary body R and act on the middle or entire bow area and attack on the underside of the bow, replaceable.
- the smooth sheet support on the lateral surface M support for example, means which hold the sheets B by means of adhesive forces, wherein adhesive strips or under the freezing point of an adhesive applied to the contact surface can be arranged within the jacket surface M coolable Peltier elements.
- the arch B With the retaining means acting unilaterally on the underside of the arch B, the arch B is not partially concealed in a particularly advantageous manner, and the arch support does not protrude beyond the peripheral surface contour, so that in particular the accessibility of the arch edge zones for the sheet inspection is improved.
- the format adjustment can be automated in a known manner.
- rotary encoder G on the pivot axis of the means FH for fixing the sheet trailing edges are arranged to capture the format-dependent rotational angular position and output to a machine control S, in cooperation with known adjusting means for the format change the automatic pivoting of the lateral surface segments and Means FH in the correct rotational angle position causes.
- a sheet tightening during the sheet transport through the sheet guide IW is by a movement of the means FH for fixing the sheet trailing edge against the transport direction possible.
- Format-adjustable storage drums are known and are therefore not described in detail.
- the sheet inspection device I is fixed to the frame or pivotally mounted on a (not shown) vibration-damped support, which is suitably surrounded for shielding environmental influences of a further pressure, paint or drying towers adapted housing. Since neither inking or printing cylinder or dryer installations limit the available space above the body of revolution R, the optimal arrangement and orientation of the sheet inspection device I is feasible for each application and it is in principle the entire lateral surface portion between the sheet transfer areas before and after the sheet guide IW for the optical Scanning the sheet surface available.
- the sheet inspection device I is optically focused by means of fixed focal length or autofocus onto a scanning region A on the lateral surface M of the rotational body R.
- the sheet inspection device I or certain parts thereof at a front or downstream plant W or at the sheet delivery or delivery.
- optical reasons could require a larger observation distance, so that the sheet inspection device I is placed at a front or downstream plant W and is directed to the scanning A of the sheet-guiding rotating body R in the sheet guide IW.
- the sheet guide IW complies with its inventive function of the exact bowing, which forms the prerequisite for a high-quality quality control of the printing process.
- the performance of the sheet inspection device I is improved by the arrangement of illumination means L (surface or line emitter with homogeneous luminance) in the sheet guide IW, which are also directed to the scanning region A at certain angles to the sheet inspection device I.
- illumination means L surface or line emitter with homogeneous luminance
- the arrangement of simply large cylinders or drums instead of a double-large rotary body R and the arrangement of a further sheet inspection device I, in the sheet transfer area between the cylinders / drums directed towards the underside of the sheet or by a second sheet inspection device I below the / the rotary body (s) R, which is directed to the transfer area before or after the sheet guide IW, the inspection of both sides of the sheet in perfecting in a single sheet guide IW is possible , It is also the arrangement of sheet guiding IW before and after a turning device for a mutual bow control possible.
- the sheet guide IW can be provided for marking sheets B, which were recognized as defective, for example by the sheet inspection device I, or to the impression of personalized data an inline marking device D, eg a printing device with one or more inkjet printheads. Since an inkjet printing device also requires an exact sheet guide, it is expedient to arrange these in the sheet guide IW.
- the marking device D is arranged peripherally on the rotary body R and brings within a lateral surface portion (marking region K), which follows the scanning region A in the transport direction, print quality-dependent markings (eg waste paper markings) on the sheets B in the pressure edge zones.
- the arc marking eg with barcodes or matrix codes is also possible.
- the marking device D is in functional connection with a machine control S and is coupled to the print quality control with the sheet inspection device I or another sheet control device.
- the marking device D is designed as an imprinting unit and can be positioned at any point along the sheet guiding path on the rotary body R.
- the sheet guiding mechanism IW functions as an imprinting or sheet marking unit which contains only one or more printing devices D.
- the sheet guide IW is not arranged immediately after the sheet system, the sheet guide IW additionally analogous to the printing, coating or drying units W on a sheet transfer device UE, in particular a rotational body R upstream transfer drum or a transfer cylinder analogous to the configuration of the other units W can be.
- a separate sheet transfer device UE may possibly be omitted by one of the rotating body R performs a double function sheet scanning / sheet transfer.
- the sheets B taken over by an upstream aggregate W are first detected by the means FV for fixing the sheet leading edge regions.
- the full-surface smooth application of rigid sheet B on the lateral surface M can be supported by additional, arranged in the transfer area mechanical and / or pneumatic sheet guiding means which prevent the spreading of the leading edges of the sheet B from the mantle M and ensure accurate detection of the sheet leading edges by the means FV ,
- the entire area fixed on the lateral surface M or at least in the scanning A on the lateral surface M arc B through the scanning A of the inline sheet inspection device I to control the print quality, the printed surface of the sheet B is scanned optically line by line or grid-shaped.
- the scanning area A is illuminated by light source L.
- the image data of the sheet inspection device I are processed in an image evaluation device, which is assigned to the machine control S, and compared with target image data. If a permissible tolerance range is exceeded, a corresponding signal is output to the machine control S for initiating the fault clearance measures provided for this purpose.
- the activation of a Märktechniks worn D belong, which applies by means of inkjet printing, for example, on a sheet edge zone in the marking area K a spoof sheet marking, which can be used by a downstream further sheet inspection device for discharging the spoiling sheet.
- a color measuring device is located in the curved guide IW, the colorant or dampening solution guide of the upstream printing units W is controlled by it via the machine controller S in a known manner.
- a marking not quality-compliant sheet B can also be done. Color-quality-reduced sheets can in turn be removed via a downstream sheet lock from the printing process.
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Screen Printers (AREA)
Description
Die Erfindung betrifft eine Bogenrotationsdruckmaschine in Aggregat- und Reihenbauweise gemäß Oberbegriff des ersten Anspruchs.The invention relates to a sheet-fed rotary printing machine in aggregate and series construction according to the preamble of the first claim.
Bekannt sind Bogendruckmaschinen mit automatischen Inline- Bogeninspektionssystemen zur laufenden Kontrolle der Druckqualität während des Druckens. Diese bestehen aus einer Bildaufnahmeeinrichtung (z.B. Zeilenkamera), einer Beleuchtungs-, einer Steuer-, einer Bedien- und einer Auswerteeinrichtung sowie gegebenenfalls Anzeigeeinrichtungen (z.B. Monitore).
Weiterhin sind optische Einrichtungen zur spektralen oder densitometrischen Farbmessung bekannt.
Die Inspektions- bzw. Farbmesseinrichtungen tasten den Bogen, einzelne Bereiche und/oder ausgewählte Messfelder (Abtastbereiche) optisch ab, während sich der Bogen auf einem in einem Druck- oder Lackwerk vorhandenen Gegendruckzylinder befindet und auf diesem in Greifern gehalten wird.
Gegendruckzylinder in Druck- oder Lackwerken haben den Nachteil, dass die Bogen nur im Bereich der Vorderkantengreifer und im Bereich des Druckspaltes (durch die Druckpressung des zugeordneten Gummi- oder Lackzylinders) fixiert werden können und damit nur dort einer genauen Bildinspektion ohne Unschärfen oder Bildinformationsverluste zugänglich sind. Der hintere Bogenbereich muss zur Bogeninspektion nach Verlassen des Druckspaltes von Blasluft oder mechanischen Bogenleiteinrichtungen auf dem Druckzylinder fixiert werden. Insbesondere bei biegesteifen oder sehr dünnen Bedruckstoffen kommt es dennoch immer wieder zu partiellen Verschiebungen oder zum Abheben des Bogens aufgrund von Flieh- und Rückstellkräften, die nach dem Verlassen des Druckspaltes auf den Bogen wirken. Die Folge ist eine ungleichmäßige Ausleuchtung des Bogens sowie unscharfe Bilder in diesen Bereichen und damit verbunden ein unbrauchbares Inspektions- oder Farbmessergebnis.
Ein weiterer Nachteil ist, dass die Druckpressung des im Abtastbereich der Bildaufnahmeeinrichtung befindlichen Druckwerkes zur Gewährleistung eines guten Inspektions- bzw. Messergebnisses eingeschaltet sein muss, auch wenn das Werk nicht zum Druck verwendet wird. Es kommt dadurch zur Rückspaltung der Farben auf dem Gummituch und Aufbau von Farbe sowie Schieben und Dublieren des Druckbildes.
Darüber hinaus ist infolge der Vielzahl von Bogenführungselementen und/ oder Trocknern, die auf die Verhinderung des Abschmierens der frisch aufgebrachten Farbe/Lacke nach der Druckzone gerichtet sind, der für eine Bogeninspektion verfügbare Freiraum für eine optische Bogenabtastung nach der Druckzone nicht vorhanden oder stark eingeschränkt.Sheet-fed presses with automatic inline sheet-fed inspection systems are known for the continuous control of print quality during printing. These consist of an image recording device (eg line camera), a lighting, a control, a control and an evaluation and optionally display devices (eg monitors).
Furthermore, optical devices for spectral or densitometric color measurement are known.
The inspection or color measuring devices optically scan the sheet, individual areas and / or selected measuring fields (scanning areas), while the sheet is located on a counter-pressure cylinder present in a printing or coating unit and held in grippers thereon.
Counter-pressure cylinders in printing or coating plants have the disadvantage that the sheets can be fixed only in the area of the leading edge gripper and in the area of the printing gap (by the pressure of the associated rubber or lacquer cylinder) and thus only there a precise image inspection without blurring or image information losses are accessible , The rear sheet area must be fixed for sheet inspection after leaving the nip of blown air or mechanical sheet guiding on the printing cylinder. In particular, in rigid or very thin substrates, there are always partial shifts or to lift the sheet due to centrifugal and restoring forces acting on the sheet after leaving the nip. The result is an uneven illumination of the sheet and blurred images in these areas and, consequently, an unusable inspection or color measurement result.
Another disadvantage is that the pressure of the printing unit located in the scanning of the image pickup device must be turned on to ensure a good inspection or measurement result, even if the plant is not used for printing. It comes thereby to the splitting of the colors on the blanket and construction of color as well as pushing and doubling of the printed image.
In addition, due to the variety of sheet guiding elements and / or dryers, which are directed to the prevention of smearing of the freshly applied ink / varnish after the printing zone, the available space for sheet inspection for optical sheet scanning after the print zone is not present or severely limited.
Einrichtungen zur formatvariablen Fixierung von Bogenhinterkanten oder der gesamten Bogenfläche, die optimale Voraussetzungen für eine Bogeninspektion oder Bogenkennzeichnung bieten würden, sind jedoch für einen Einsatz unter Druckpressung in einem Druck- oder Lackwerk nicht geeignet.However, devices for variable-format fixing of sheet trailing edges or the entire sheet surface, which would provide optimum conditions for sheet inspection or sheet marking, are not suitable for use under pressure in a printing or coating unit.
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Der Erfindung liegt die Aufgabe zugrunde, die Bogenführung im Abtastbereich von Bogeninspektionseinrichtungen zu verbessern.The invention has for its object to improve the sheet guide in the scanning of sheet inspection facilities.
Erfindungsgemäß wird die Aufgabe durch eine Vorrichtung mit den Merkmalen des ersten Anspruchs gelöst. Zweckmäßige Ausgestaltungen sind Gegenstand der weiteren Ansprüche.According to the invention the object is achieved by a device having the features of the first claim. Advantageous embodiments are the subject of the other claims.
In einer Bogenrotationsdruckmaschine mit einer Inline- Bogeninspektionseinrichtung oder auch mit einer davon angesteuerten Bogenmarkierungseinrichtung ist für die Sicherstellung einer ganzflächigen Bogenkontrolle und ggf. einer Bogenkennzeichnung mindestens ein Bogenführungswerk als separates, zumindest einen bogenführenden Rotationskörper aufweisendes Aggregat an beliebiger Stelle zwischen der Bogenanlage und der Bogenauslage angeordnet, wobei der Rotationskörper für eine glatte Bogenauflage auf seiner Mantelfläche ausgebildet ist und dazu Mittel zum Fixieren der Bogen auf seiner Mantelfläche im Bereich der Bogenvorderkanten und zumindest in einem weiteren Bereich aufweist, in dem die zu verarbeitenden Bogen zum Abspreizen von der Mantelfläche neigen, so dass die Bogen annährend ganzflächig oder zumindest im Abtastbereich fixiert sind.In a sheet-fed rotary printing press with an in-line sheet inspection device or with a sheet marking device driven therefor, at least one sheet guide mechanism is arranged at any point between the sheet system and the sheet delivery as a separate aggregate comprising at least one sheet-guiding rotary body for securing a full-surface sheet control and possibly a sheet marking. wherein the rotary body is designed for a smooth sheet support on its lateral surface and to this means for fixing the sheet on its lateral surface in the region of the sheet leading edges and at least in another area, in which the sheets to be processed tend to spread from the lateral surface, so that the Arc are almost fixed over the entire surface or at least in the scanning.
Einrichtungen zur Bogenkennzeichnung erfordern ebenfalls einen konstanten Abstand zum Bogen, so dass bei Einsatz von Markierungseinrichtungen die Bogenfixierungsmittel vorteilhaft auch für die Sicherstellung einer glatten Bogenauflage im Markierungsbereich auf der Mantelfläche des Rotationskörpers nutzbar sind.
Mit dem separaten, auf die Erfordernisse einer ganzflächigen Bogenfixierung ausgerichteten Bogenführungswerk ist gewährleistet, dass der optisch abzutastende oder zu markierende Bogen zumindest im Abtastbereich und/oder im Markierungsbereich vollständig auf dem Zylinder aufliegt und der abtastbare Bereich sich über die gesamte bedruckbare Bogenfläche erstrecken kann, sofern dies erforderlich sein sollte.
Nur bei einer über alle Bogen wiederholbaren, bahngenauen Führung der Bedruckstoffbogen sind die Inspektions- bzw. Messergebnisse miteinander vergleichbar und Veränderungen in den Messergebnissen damit zuverlässig auswertbar.
Das erfindungsgemäße Bogenführungswerk ist vorteilhafterweise derart ausgebildet, das sowohl Bedruckstoffbogen mit hoher Biegesteifigkeit (z.B. Karton) als auch sehr dünne Bedruckstoffbogen mit konstantem Abstand von der Inspektions-, Farbmess- oder Markierungseinrichtung durch den Abtastbereich bzw. Markierungsbereich geführt werden können, ohne dabei Einschränkungen bezüglich des zugänglichen Bogen-Abtastbereiches hinnehmen zu müssen, wie dies bei einer Bogeninspektion in einem Druck-, Lack- oder Trockenwerk der Fall wäre.Equipment for sheet marking also require a constant distance from the sheet, so that when using marking devices, the sheet fixing means are also beneficial for ensuring a smooth sheet support in the marking area on the lateral surface of the rotating body.
With the separate, aligned to the requirements of a full-area sheet fusing sheet guide ensures that the optically scanned or to be marked sheet rests completely on the cylinder at least in the scanning and / or in the marking area and the scannable area can extend over the entire printable sheet surface, if this should be required.
Only in the case of a sheet-accurate guidance of the printing material sheets that can be repeated over all the sheets can the inspection or measurement results be compared and changes in the measurement results can thus be reliably evaluated.
The sheet guiding mechanism according to the invention is advantageously designed such that both substrate sheet with high bending stiffness (eg cardboard) and very thin substrate sheets can be guided at a constant distance from the inspection, color measuring or marking device through the scanning area or marking area, without restricting the Having to accept acceptable sheet scanning range, as would be the case with an arc inspection in a printing, paint or drying plant.
Durch die Verwendung bewährter Bogenhaltemittel von Speichertrommeln in Bogenwendungseinrichtungen von Bogenoffsetdruckmaschinen ist auf einfache Weise eine ganzflächige Bogenauflage auf der Mantelfläche des im Bogenführungswerk vorhandenen Rotationskörpers realisierbar. Ineinander greifende Mantelelemente des Zylinders schaffen einen Verstellbereich für den Abstand zwischen den Bogenfixierungsmitteln im Bereich der Bogenvorderkante und denjenigen im Bereich der Bogenhinterkante, so dass eine optimale Bogenfixierung für alle zu verarbeitenden Bogenformate möglich ist.
Zur Fixierung der Bogen auf der Mantelfläche des Rotationskörpers ist auch der Einbau hydroadhäsiver Bogenhaltemittel (Gefriergreifer bzw. kühlbare Bogenauflageflächen) aufgrund der Leichtbauweise des Rotationskörpers im Bogenführungswerk mit wesentlich geringerem konstruktivem Aufwand als in Gegendruckzylindern möglich.By using proven sheet holding means of storage drums in sheet turning facilities of sheetfed offset printing machines, a full-area sheet support on the lateral surface of existing in the sheet guide rotary body can be realized in a simple manner. Interlocking shell elements of the cylinder provide an adjustment range for the distance between the sheet fixing means in the area of the sheet leading edge and those in the region of the sheet trailing edge, so that an optimal sheet fixation for all sheet formats to be processed is possible.
For fixing the sheet on the lateral surface of the rotating body and the incorporation of hydroadhesive sheet holding means (freeze gripper or cool sheet support surfaces) due to the lightweight construction of the rotating body in the sheet guide with much lower design effort than in counter-pressure cylinders is possible.
Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden. Die dazugehörigen Zeichnungen zeigen in
- Figur 1
- eine schematische Darstellung des Bogenführungswerkes mit Hinterkantengreifern vor einer Bogenauslage
- Figur 2
- eine schematische Darstellung des Bogenführungswerkes mit Hinterkantensaugern zwischen Druckwerken
- FIG. 1
- a schematic representation of the sheet guide with trailing edge grippers before a sheet delivery
- FIG. 2
- a schematic representation of the sheet guiding mechanism with Hinterkantensaugern between printing units
Das erfindungsgemäße Bogenführungswerk IW kann an beliebiger Stelle in einer Bogenrotationsdruckmaschine mit einer Bogenanlage, einem oder mehreren Druck-, Lack- und/oder Trockenwerken W und einer Bogenauslage angeordnet sein. Es entspricht in seinem bogenführenden Teil den Abmessungen und der Anschlusskonfiguration der übrigen Druck-, Lack- oder Trockenwerke W, so dass es jedem beliebigen Druckmaschinenaggregat W als separates Modul vor- oder nachgeordnet sein kann. Zweckmäßig findet eine Bogeninspektion zur Erfassung von Druckbildfehlern insbesondere vor der Bogenauslage (
Wie in
Zur Fixierung der Bogenvorderkanten auf der Mantelfläche M sind obligatorische Mittel FV zur Fixierung der Bogenvorderkantenbereiche in Gestalt von Greifern (
Aufgrund des im Bogenführungswerk IW oberhalb des Rotationskörpers R verfügbaren Freiraumes entlang des Bogenweges ist es ohne wesentliche Einschränkung des für eine Bogeninspektion oder Bogenkennzeichnung erforderlichen Umfangsbereiches möglich, zusätzliche (nicht dargestellte) periphere Bogenführungsmittel insbesondere im Bogenübernahmebereich zum vorgeordneten Aggregat W am Rotationskörper R anzuordnen, die die glatte Bogenauflage auf die Mantelfläche M bei Bogenübernahme unterstützen. Bei der Bogenübernahme von einem vorgeordneten Zylinder oder einer Trommel ist es vorteilhaft, zur Fixierung der Bogenvorderkanten auf dem Rotationskörper R pneumatische Bogenführungsmittel, insbesondere Blasluftrakel, peripher im Übernahmebereich anzuordnen, die mit einem pneumatisch erzeugten Liniendruck die Bogenvorderkanten auf die Mantelfläche M "aufbügeln", bevor sie von Vorderkantengreifern oder anderen Mitteln FV zur Fixierung der Bogen B erfasst werden.Due to the free space along the sheet path available in the sheet guide IW above the body of revolution R, it is possible without substantial restriction of the peripheral area required for sheet inspection or sheet marking to arrange additional (not shown) peripheral sheet guiding means, in particular in the sheet transfer area to the upstream aggregate W on the rotation body R, which the smooth sheet support on the lateral surface M assist in sheet transfer. When the sheet transfer of an upstream cylinder or a drum, it is advantageous for fixing the sheet leading edges on the rotary body R pneumatic sheet guiding means, in particular Blasluftrakel to arrange peripherally in the takeover, which "iron on" the sheet leading edges on the lateral surface M with a pneumatically generated line pressure before they are detected by leading edge grippers or other means FV for fixing the sheets B.
Zusätzlich oder alternativ können die Bogen B in druckfreien Bereichen und/ oder in den Seitenkantenbereichen mittels mechanischer Bogenführungsmittel, insbesondere Leitbügel oder Leitrollen, auf die Mantelfläche M aufgelegt werden.Additionally or alternatively, the sheet B in non-pressure areas and / or in the side edge regions by means of mechanical sheet guiding means, in particular guide bar or guide rollers, are placed on the lateral surface M.
Für eine glatte Bogenauflage besonders biegesteifer Bogen B, die zum Aufwölben auf der Mantelfläche M neigen, kann es - sofern dies die für die Bogeninspektions- oder Markierungseinrichtungen I, D freizuhaltenden Abtast- und/oder Markierungsbereiche A, K gestatten - zweckmäßig sein, zusätzliche (nicht dargestellte) pneumatische Bogenführungsmittel in der Nähe der Abtast-/Markierungsbereiche A, K anzuordnen, die die Bogen B zumindest beim Eintritt in den Abtastbereich A/ Markierungsbereich K oder auch nach Verlassen desselben auf der Mantelfläche M des Rotationskörpers R fixieren. Dazu sind Blasluftrakeln oder Luftpolsterführungen, die ihre Blasstrahlen radial auf die Bogen B richten und einen Linien- oder Flächendruck auf die Bogen B aufbringen, in Transportrichtung vor und nach dem Abtastbereich A/ Markierungsbereich K der Bogeninspektionseinrichtung I in geringem Abstand von der Mantelfläche M und vorzugsweise gegen die Transportrichtung geneigt angeordnet.For a smooth sheet support particularly bending-resistant sheet B, which tend to bulge on the lateral surface M, it may be appropriate - provided that allow for the Bogeninspektions- or marking devices I, D scanned and / or marking areas A, K - not shown) pneumatic sheet guiding means in the vicinity of the scanning / marking areas A, K, which fix the sheets B at least on entering the scanning A / marking area K or even after leaving the same on the lateral surface M of the rotating body R. For this purpose, blower air blades or bubble guides, which direct their jets of radiation radially on the sheet B and apply a line or surface pressure on the sheet B, in the transport direction before and after the scanning A / marking area K of the sheet inspection device I at a small distance from the lateral surface M and preferably arranged inclined to the transport direction.
Die für eine ganzflächige Bogeninspektion hinderlichen peripheren Bogenführungsmittel können aufgrund der Bauweise des Rotationskörpers R vorteilhaft durch Mittel zur Bogenfixierung, die im Rotationskörper R integriert sind und auf den mittleren oder gesamten Bogenbereich wirken und auf der Bogenunterseite angreifen, ersetzbar.Due to the construction of the rotary body R, the peripheral sheet guiding means, which obstruct the entire surface sheet inspection, can advantageously be fixed by means for sheet fixing, which are integrated in the rotary body R and act on the middle or entire bow area and attack on the underside of the bow, replaceable.
Die glatte Bogenauflage auf der Mantelfläche M unterstützen beispielsweise Mittel, die die Bogen B mit Hilfe von Adhäsionskräften halten, wobei Klebestreifen oder unter den Gefrierpunkt eines auf die Kontaktfläche aufgebrachten Adhäsionsmittels kühlbare Peltierelemente innerhalb der Mantelfläche M angeordnet sein können.The smooth sheet support on the lateral surface M support, for example, means which hold the sheets B by means of adhesive forces, wherein adhesive strips or under the freezing point of an adhesive applied to the contact surface can be arranged within the jacket surface M coolable Peltier elements.
Mit den einseitig an der Unterseite der Bogen B angreifenden Haltemitteln werden in besonders vorteilhafter Weise die Bogen B nicht partiell verdeckt und die Bogenhaltemittel ragen auch nicht über die Mantelflächenkontur hinaus, so dass insbesondere die Zugänglichkeit der Bogenrandzonen für die Bogeninspektion verbessert wird.With the retaining means acting unilaterally on the underside of the arch B, the arch B is not partially concealed in a particularly advantageous manner, and the arch support does not protrude beyond the peripheral surface contour, so that in particular the accessibility of the arch edge zones for the sheet inspection is improved.
Ebenso sind mit Luftöffnungen durchsetzte Mantelflächenabschnitte, die mit Saugluft beaufschlagbar sind, zur ganzflächigen oder abschnittweisen Bogenfixierung ohne Beschränkung des Abtastbereiches A und/oder Markierungsbereiches K geeignet. Formatabhängig zuschaltbare Saugluftflächenabschnitte in der Mantelfläche M verbessern den Wirkungsgrad der Saugluftführung und können ggf. formatumstellbare Mittel FH zur Bogenfixierung ersetzen.Similarly, with air openings interspersed lateral surface portions which can be acted upon with suction, suitable for full-area or section-wise sheet fixing without limiting the scanning area A and / or marking area K. Depending on the format switchable Saugluftflächenabschnitte in the outer surface M improve the efficiency of Saugluftführung and can optionally format convertible means FH for sheet fixing replace.
Es ist auch möglich, den Rotationskörper R vollständig als Saugtrommel auszubilden.It is also possible to form the rotary body R completely as a suction drum.
Das Problem des Bogenabspreizens besonders dicker oder biegesteifer Bedruckstoffe kann in dem Bogenführungswerk IW mittels zusätzlicher Mittel FH zur Fixierung der Bogenhinterkantenbereiche, insbesondere Hinterkantengreifer (
Die Formatverstellung ist in bekannter Weise automatisierbar. Dazu sind Drehwinkelgeber G an der Schwenkachse der Mittel FH zur Fixierung der Bogenhinterkanten (z.B. Hinterkantengreifer oder-sauger) angeordnet, die deren formatabhängige Drehwinkelposition erfassen und an eine Maschinensteuerung S ausgeben, die im Zusammenwirken mit bekannten Stellmitteln für die Formatumstellung das automatische Schwenken der Mantelflächensegmente und Mittel FH in die richtige Drehwinkelposition bewirkt. Auch eine Bogenstraffung während des Bogentransportes durch das Bogenführungswerk IW ist durch eine Bewegung der Mittel FH zur Fixierung der Bogenhinterkanten entgegen der Transportrichtung möglich. Formatfernverstellbare Speichertrommeln sind bekannt und werden daher nicht näher beschrieben.The format adjustment can be automated in a known manner. For this purpose, rotary encoder G on the pivot axis of the means FH for fixing the sheet trailing edges (eg trailing edge gripper or sucker) are arranged to capture the format-dependent rotational angular position and output to a machine control S, in cooperation with known adjusting means for the format change the automatic pivoting of the lateral surface segments and Means FH in the correct rotational angle position causes. Also, a sheet tightening during the sheet transport through the sheet guide IW is by a movement of the means FH for fixing the sheet trailing edge against the transport direction possible. Format-adjustable storage drums are known and are therefore not described in detail.
Oberhalb des Rotationskörpers R ist die Bogeninspektionseinrichtung I an einer (nicht dargestellten) schwingungsgedämpften Halterung gestellfest oder schwenkbar angeordnet, die zweckmäßig zur Abschirmung von Umgebungseinflüssen von einem den weiteren Druck-, Lack- oder Trockentürmen angepassten Gehäuse umgeben ist. Da weder Farbwerks- oder Druckwerkszylinder oder Trocknereinbauten den verfügbaren Raum oberhalb des Rotationskörpers R einschränken, ist für jeden Anwendungsfall die optimale Anordnung und Ausrichtung der Bogeninspektionseinrichtung I realisierbar und es steht im Prinzip der gesamte Mantelflächenabschnitt zwischen den Bogenübergabebereichen vor und nach dem Bogenführungswerk IW für die optische Abtastung der Bogenoberfläche zur Verfügung. Die Bogeninspektionseinrichtung I ist optisch mittels fester Brennweite oder Autofokus auf einen Abtastbereich A auf der Mantelfläche M des Rotationskörpers R fokussiert.
Es ist ebenso möglich, die Bogeninspektionseinrichtung I oder bestimmte Teile davon an einem vor- oder nachgeordneten Werk W oder an der Bogenan- oder -auslage anzuordnen. So könnte es beispielsweise zweckmäßig sein, lediglich die Sensoren im Bogenführungswerk IW anzuordnen und die zugeordneten Signalverarbeitungs- und -übertragungseinheiten aus Anschlussgründen oder zur Kopplung mit weiteren Sensoren einem anderen Werk W zuzuordnen. Bei großen Formatbreiten könnten optische Gründe einen größeren Beobachtungsabstand erfordern, so dass die Bogeninspektionseinrichtung I an einem vor- oder nachgeordneten Werk W angeordnet wird und auf den Abtastbereich A des bogenführenden Rotationskörpers R im Bogenführungswerk IW gerichtet ist. Unabhängig von der konkreten Anordnung der Bogeninspektionseinrichtung I oder weiterer Einrichtungen erfüllt das Bogenführungswerk IW seine erfindungsgemäße Funktion der exakten Bogenführung, die die Voraussetzung für eine qualitativ hochwertige Qualitätskontrolle des Druckprozesses bildet.Above the rotary body R, the sheet inspection device I is fixed to the frame or pivotally mounted on a (not shown) vibration-damped support, which is suitably surrounded for shielding environmental influences of a further pressure, paint or drying towers adapted housing. Since neither inking or printing cylinder or dryer installations limit the available space above the body of revolution R, the optimal arrangement and orientation of the sheet inspection device I is feasible for each application and it is in principle the entire lateral surface portion between the sheet transfer areas before and after the sheet guide IW for the optical Scanning the sheet surface available. The sheet inspection device I is optically focused by means of fixed focal length or autofocus onto a scanning region A on the lateral surface M of the rotational body R.
It is also possible to arrange the sheet inspection device I or certain parts thereof at a front or downstream plant W or at the sheet delivery or delivery. For example, it may be expedient to arrange only the sensors in the curved guide IW and to assign the associated signal processing and transmission units to another plant W for connection reasons or for coupling with other sensors. For large format widths optical reasons could require a larger observation distance, so that the sheet inspection device I is placed at a front or downstream plant W and is directed to the scanning A of the sheet-guiding rotating body R in the sheet guide IW. Regardless of the specific arrangement of the sheet inspection device I or other facilities, the sheet guide IW complies with its inventive function of the exact bowing, which forms the prerequisite for a high-quality quality control of the printing process.
Die Leistungsfähigkeit der Bogeninspektionseinrichtung I wird durch die Anordnung von Beleuchtungsmitteln L (Flächen- oder Linienstrahler mit homogener Leuchtdichte) im Bogenführungswerk IW verbessert, die unter bestimmten Winkeln zur Bogeninspektionseinrichtung I ebenfalls auf den Abtastbereich A gerichtet sind.
Insbesondere bei Anordnung von einfach großen Zylindern bzw. Trommeln anstelle eines doppelt großen Rotationskörpers R und durch die Anordnung einer weiteren Bogeninspektionseinrichtung I, die im Bogenübergabebereich zwischen den Zylindern/Trommeln auf die Bogenunterseite gerichtet ist oder durch eine zweite Bogeninspektionseinrichtung I unterhalb des /der Rotationskörper(s) R, die auf den Übergabebereich vor oder nach dem Bogenführungswerk IW gerichtet ist, wird die Inspektion beider Bogenseiten beim Schön- und Widerdruck in einem einzigen Bogenführungswerk IW ermöglicht. Es ist ebenso die Anordnung von Bogenführungswerken IW vor und nach einer Wendeeinrichtung für eine beiderseitige Bogenkontrolle möglich.The performance of the sheet inspection device I is improved by the arrangement of illumination means L (surface or line emitter with homogeneous luminance) in the sheet guide IW, which are also directed to the scanning region A at certain angles to the sheet inspection device I.
In particular, in the arrangement of simply large cylinders or drums instead of a double-large rotary body R and the arrangement of a further sheet inspection device I, in the sheet transfer area between the cylinders / drums directed towards the underside of the sheet or by a second sheet inspection device I below the / the rotary body (s) R, which is directed to the transfer area before or after the sheet guide IW, the inspection of both sides of the sheet in perfecting in a single sheet guide IW is possible , It is also the arrangement of sheet guiding IW before and after a turning device for a mutual bow control possible.
Unter einer Bogeninspektionseinrichtung I werden
- eine Bogeninspektionseinrichtung,
- eine Farbmesseinrichtung,
- eine Kombination von Bogeninspektions- und Farbmesseinrichtung,
- oder bestimmte Funktionseinheiten beider Einrichtungen, wie Bildsensoren, subsumiert.
Eine Bogeninspektionseinrichtung I erfasst mittels einer oder mehrerer Zeilenkameras oder Flächenkameras die Oberfläche der Bogen B bzw. die Druckbilder zyklisch.
Eine Farbmesseinrichtung erfasst die Druckbilder bzw. Messfelder zyklisch und wertet sie spektral oder densitometrisch aus. Beide Einrichtungen geben die erfassten Druckqualitätsdaten an die Maschinensteuerung S zur Weiterverarbeitung (Signale, Korrekturmaßnahmen ...) aus.
- an arc inspection device,
- a color measuring device,
- a combination of sheet inspection and color measuring equipment,
- or certain functional units of both devices, such as image sensors subsumed.
An arc inspection device I detects the surface of the sheets B or the printed images cyclically by means of one or more line scan cameras or area cameras.
A color measuring device records the printed images or measuring fields cyclically and evaluates them spectrally or densitometrically. Both devices output the acquired print quality data to the machine controller S for further processing (signals, corrective actions, etc.).
Im Bogenführungswerk IW kann zur Markierung von Bogen B, welche beispielsweise von der Bogeninspektionseinrichtung I als fehlerhaft erkannt wurden, oder zum Eindruck personalisierter Daten eine Inline- Markierungseinrichtung D, z.B. eine Druckeinrichtung mit einem oder mehreren Inkjet-Druckköpfen vorgesehen sein. Da eine Inkjet- Druckeinrichtung ebenfalls eine exakte Bogenführung benötigt, ist es zweckmäßig, auch diese im Bogenführungswerk IW anzuordnen. Die Markierungseinrichtung D ist peripher am Rotationskörper R angeordnet und bringt innerhalb eines Mantelflächenabschnittes (Markierungsbereich K), der in Transportrichtung dem Abtastbereich A folgt, druckqualitätsabhängige Markierungen (z.B. Makulaturbogenmarkierungen) auf die Bogen B in den Druckrandzonen auf. Die Bogenkennzeichnung z.B. mit Barcodes oder Matrixcodes ist ebenfalls möglich.
Die Markierungseinrichtung D steht mit einer Maschinensteuerung S in Funktionsverbindung und ist zur Druckqualitätskontrolle mit der Bogeninspektionseinrichtung I oder einer anderen Bogenkontrolleinrichtung gekoppelt.
Beim Eindruck von Personalisierungsdaten (z.B. Adressen, Namen) ist die Markierungseinrichtung D als Eindruckwerk ausgebildet und ist an beliebiger Stelle entlang des Bogenführungsweges am Rotationskörper R positionierbar.In the sheet guide IW can be provided for marking sheets B, which were recognized as defective, for example by the sheet inspection device I, or to the impression of personalized data an inline marking device D, eg a printing device with one or more inkjet printheads. Since an inkjet printing device also requires an exact sheet guide, it is expedient to arrange these in the sheet guide IW. The marking device D is arranged peripherally on the rotary body R and brings within a lateral surface portion (marking region K), which follows the scanning region A in the transport direction, print quality-dependent markings (eg waste paper markings) on the sheets B in the pressure edge zones. The arc marking eg with barcodes or matrix codes is also possible.
The marking device D is in functional connection with a machine control S and is coupled to the print quality control with the sheet inspection device I or another sheet control device.
In the impression of personalization data (eg addresses, names) the marking device D is designed as an imprinting unit and can be positioned at any point along the sheet guiding path on the rotary body R.
Es kann vorgesehen sein, dass das Bogenführungswerk IW als Eindruckwerk oder Bogenkennzeichnungswerk fungiert, welches nur eine oder mehrere Druckeinrichtung(en) D enthält.It can be provided that the sheet guiding mechanism IW functions as an imprinting or sheet marking unit which contains only one or more printing devices D.
Aufgrund der besonderen Ausbildung des Bogenführungswerkes IW als separates Aggregat besteht hinsichtlich der Anordnung und Anzahl der darin angeordneten Bogeninspektionseinrichtungen I und/oder Markierungseinrichtungen D eine weitaus größere Flexibilität als in den weiteren Aggregaten W.Due to the special design of the sheet guide IW as a separate unit with respect to the arrangement and number of arranged therein sheet inspection facilities I and / or marking devices D far greater flexibility than in the other units W.
Sofern das Bogenführungswerk IW nicht unmittelbar nach der Bogenanlage angeordnet ist, weist das Bogenführungswerk IW zusätzlich analog zu den Druck-, Lack- oder Trockenwerken W eine Bogenübergabeeinrichtung UE auf, die insbesondere eine dem Rotationskörper R vorgeordnete Übergabetrommel oder ein Transferzylinder analog zur Konfiguration der anderen Aggregate W sein kann. Im Falle einer Anordnung mehrerer Rotationskörper R mit Bogenabtastung im Bogenführungswerk IW kann eine separate Bogenübergabeeinrichtung UE möglicherweise entfallen, indem einer der Rotationskörper R eine Doppelfunktion Bogenabtastung/Bogenübergabe übernimmt.If the sheet guide IW is not arranged immediately after the sheet system, the sheet guide IW additionally analogous to the printing, coating or drying units W on a sheet transfer device UE, in particular a rotational body R upstream transfer drum or a transfer cylinder analogous to the configuration of the other units W can be. In the case of an arrangement of a plurality of rotary bodies R with sheet scanning in the sheet guide IW, a separate sheet transfer device UE may possibly be omitted by one of the rotating body R performs a double function sheet scanning / sheet transfer.
Die von einem vorgeordneten Aggregat W (Bogenanlage, Druck-, Lack- oder Trockenwerk) übernommenen Bogen B werden zunächst von den Mitteln FV zur Fixierung der Bogenvorderkantenbereiche erfasst. Das vollflächige glatte Auflegen biegesteifer Bogen B auf die Mantelfläche M kann durch zusätzliche, im Übernahmebereich angeordnete mechanische und/ oder pneumatische Bogenführungsmittel unterstützt werden, die das Abspreizen der Vorderkanten der Bogen B vom Mantel M verhindern und ein exaktes Erfassen der Bogenvorderkanten durch die Mittel FV gewährleisten.The sheets B taken over by an upstream aggregate W (sheet feeder, printing, coating or drying plant) are first detected by the means FV for fixing the sheet leading edge regions. The full-surface smooth application of rigid sheet B on the lateral surface M can be supported by additional, arranged in the transfer area mechanical and / or pneumatic sheet guiding means which prevent the spreading of the leading edges of the sheet B from the mantle M and ensure accurate detection of the sheet leading edges by the means FV ,
Nach vollständiger Bogenübernahme auf die zylindrische Mantelfläche M des Rotationskörpers R und Fixierung der Bogenvorderkante mit den Mitteln FV werden von den Mitteln die mittleren Bogenabschnitte und/ oder von den Mitteln FH die hinteren Bogenbereiche auf der Mantelfläche M fixiert. Saugluftflächen oder hydroadhäsive Kühlflächen oder analog wirkende Haltemittel, die innerhalb der Mantelfläche M angeordnet sind und auf die Bogenunterseiten wirken, erzielen eine exakte Bogenauflage während des Durchlaufens des Abtastbereiches A ohne dass sie die Bogenabtastungs- oder Markierungsbereiche A, K einschränken.After complete acceptance of the sheet on the cylindrical surface M of the body of revolution R and fixing the sheet leading edge with the means FV are fixed by the means the middle arc sections and / or the means FH the rear arc portions on the lateral surface M. Saugluftflächen or hydroadhesive cooling surfaces or analogously acting holding means, which are arranged within the lateral surface M and act on the sheet undersides, achieve an exact sheet support during the passage of the scanning A without them the Bogenabtastungs- or marking areas A, K limit.
Die vollflächig auf der Mantelfläche M oder zumindest im Abtastbereich A auf der Mantelfläche M fixierten Bogen B durchlaufen den Abtastbereich A der Inline- Bogeninspektionseinrichtung I zur Kontrolle der Druckqualität, wobei die bedruckte Oberfläche der Bogen B optisch zeilenweise oder rasterförmig abgetastet wird. Der Abtastbereich A wird dabei durch Leuchtmittel L erhellt.The entire area fixed on the lateral surface M or at least in the scanning A on the lateral surface M arc B through the scanning A of the inline sheet inspection device I to control the print quality, the printed surface of the sheet B is scanned optically line by line or grid-shaped. The scanning area A is illuminated by light source L.
Die Bilddaten der Bogeninspektionseinrichtung I werden in einer Bildauswerteeinrichtung, die der Maschinensteuerung S zugeordnet ist, verarbeitet und mit Sollbilddaten verglichen. Bei Überschreitung eines zulässigen Toleranzbereiches wird ein entsprechendes Signal an die Maschinensteuerung S zur Einleitung der dafür vorgesehenen Störungsbeseitigungsmaßnahmen ausgegeben. Dazu kann die Aktivierung einer Märkierungseinrichtung D gehören, die mittels Inkjet- Druckes beispielsweise auf einer Bogenrandzone im Markierungsbereich K eine Makulaturbogenkennzeichnung aufbringt, die von einer nachgeordneten weiteren Bogeninspektionseinrichtung zur Ausschleusung der Makulaturbogen genutzt werden kann.
Befindet sich eine Farbmesseinrichtung im Bogenführungswerk IW, wird von ihr über die Maschinensteuerung S auf bekannte Weise die Farb- oder Feuchtmittelführung der vorgeordneten Druckwerke W gesteuert. Eine Kennzeichnung nicht qualitätsgerechter Bogen B kann dabei ebenfalls erfolgen. Farbqualitätsgeminderte Bogen können wiederum über eine nachgeordnete Bogenschleuse aus dem Druckprozess entfernt werden.The image data of the sheet inspection device I are processed in an image evaluation device, which is assigned to the machine control S, and compared with target image data. If a permissible tolerance range is exceeded, a corresponding signal is output to the machine control S for initiating the fault clearance measures provided for this purpose. For this purpose, the activation of a Märkierungseinrichtung D belong, which applies by means of inkjet printing, for example, on a sheet edge zone in the marking area K a spoof sheet marking, which can be used by a downstream further sheet inspection device for discharging the spoiling sheet.
If a color measuring device is located in the curved guide IW, the colorant or dampening solution guide of the upstream printing units W is controlled by it via the machine controller S in a known manner. A marking not quality-compliant sheet B can also be done. Color-quality-reduced sheets can in turn be removed via a downstream sheet lock from the printing process.
Mit einem oder mehreren separaten Bogenführungswerken IW in einer Druckmaschine sind aufgrund der vollständigen Bogenfixierung auf der Mantelfläche M optimale und konstante Verhältnisse für eine Druckqualitätskontrolle oder auch Bogenkennzeichnung über die gesamte Bogenlänge erzielbar, die in Druck-, Lack- oder Trockenwerken W aufgrund der Bauraumbegrenzung und konstruktiven Einschränkungen bzgl. des bogenführenden Zylinders nicht erreichbar sind.
Claims (18)
- Rotary sheet printing machine in unit and series mode of construction, comprising- a sheet feed, further units which are downstream and are printing, lacquering or drying mechanisms (W), and a sheet delivery,- at least one sheet guide mechanism (IW) constructed as a separate unit,- at least one in-line sheet inspection device (I) for scanning the surfaces of sheets (B) within a scanning region (A) or at least one marking device (D) for the application of identifications to the sheet (B) within a marking region (K),
characterised in that- the sheet guide mechanism (IW) corresponds in its sheet-guiding part with the dimensions and connecting configuration of the remaining printing, lacquering or drying mechanisms (W) so that it can be arranged as a separate module upstream or downstream of any desired printing machine unit (W),- the sheet guide mechanism (IW) includes a sheet-guiding rotary body (R) with a cylindrical circumferential surface (M), wherein the scanning region (A) or the marking region (K) is disposed on the circumferential surface (M), and- the rotary body (R) comprises means (FV, FH) for fixing the sheets (B) on its circumferential surface (M) in the region of the sheet front edges and at least in a further region. - Rotary sheet printing machine according to claim 1, characterised in that a plurality of rotary bodies (R) is arranged in the sheet guide mechanism (IW).
- Rotary sheet printing machine according to claim 1, characterised in that the sheet guide mechanism (IW) additionally comprises a sheet transfer device (UE).
- Rotary sheet printing machine according to claim 1, characterised in that the sheet inspection device (I) or parts thereof is or are arranged in the sheet guide mechanism (IW) or is or are associated with an upstream or downstream printing, lacquering or drying mechanism (W).
- Rotary sheet printing machine according to claim 1, characterised in that in the case of perfecting printing machine a respective sheet guide mechansim (IW) is, for inspection of both sheet sides, arranged in front of and behind a turning device or that both sheet sides can be inspected or measured in a sheet guide mechanism (IW) after the turning device.
- Rotary sheet printing machine according to claim 1, characterised in that the rotary body (R) of the sheet guide mechanism (IW) comprises means for fixing the sheets (B) in the middle or entire sheet region.
- Rotary sheet printing machine according to claim 1, characterised in that the rotary body (R) of the sheet guide mechanism (IW) comprises means (FH) for fixing the sheets (B) in the region of the sheet rear edges.
- Rotary sheet printing machine according to claim 7, characterised in that the means (FH) for fixing the sheets (B) in the region of the sheet rear edges are adjustable in circumferential direction of the rotary body (R) in dependence on the sheet format length.
- Rotary sheet printing machine according to claim 8, characterised in that the positions of the means (FH) for fixing the sheets (B) in the region of the sheet rear edges are detectable by rotational angle transmitters, which co-operate with a machine control (S), in the sheet guide mechanism (IW).
- Rotary sheet printing machine according to claim 1 or 2, characterised in that the rotary body (R) has a single-size diameter.
- Rotary sheet printing machine according to claim 1, characterised in that the rotary body (R) has a multi-size diameter, wherein the means (FV, FH) for fixing the sheets (B) are arranged a plurality of times at the same spacing along the circumference of the circumferential surface (M).
- Rotary sheet printing machine according to claim 1 or 7, characterised in that the means (FV, FH) for fixing the sheets (B) in the front and rear edge region mechanically clamp the sheets (B).
- Rotary sheet printing machine according to claim 1 or 7, characterised in that the means (FV, FH) hold the sheets (B) by way of sub-atmospheric pressure.
- Rotary sheet printing machine according to claim 6, characterised in that the means hold the sheets (B) by way of sub-atmospheric pressure.
- Rotary sheet printing machine according to claim 1 or 14, characterised in that the rotary body (R) is a suction drum which fixes the sheets (B) by way of sub-atmospheric pressure over the whole area on the circumferential surface (M).
- Rotary sheet printing machine according to claim 1, 6 or 7, characterised in that the means (FV, FH) hold the sheets (B) adhesively.
- Rotary sheet printing machine according to claim 1, characterised in that the sheets (B) are fixable in the scanning region (A) and/or the marking region (K) on the circumferential surface (M).
- Rotary sheet printing machine according to claim 1, characterised in that the sheet guide mechanism (IW) is constructed as an imprinting or sheet recognition mechanism and for that purpose comprises a printing device (D).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610006676 DE102006006676A1 (en) | 2006-02-14 | 2006-02-14 | Sheet- |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1818177A2 EP1818177A2 (en) | 2007-08-15 |
| EP1818177A3 EP1818177A3 (en) | 2011-12-28 |
| EP1818177B1 true EP1818177B1 (en) | 2013-07-17 |
Family
ID=38100226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20070003120 Active EP1818177B1 (en) | 2006-02-14 | 2007-02-14 | Sheet rotary printing press |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1818177B1 (en) |
| DE (1) | DE102006006676A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016214908B4 (en) | 2016-08-10 | 2024-04-18 | Koenig & Bauer Ag | Machine arrangement for sequential processing of sheet-shaped substrates |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2138437A1 (en) * | 2008-06-27 | 2009-12-30 | Kba-Giori S.A. | Inspection system for inspecting the quality of printed sheets |
| JP2012161951A (en) | 2011-02-04 | 2012-08-30 | Komori Corp | Offset printing machine for printing securities |
| DE102012200069A1 (en) | 2012-01-04 | 2013-07-04 | manroland sheetfed GmbH | Method for operating rotary printing machine, involves changing position of clamped printing plate by printing plate cylinder if acquired print image on print material is deviated from reference image |
| DE102012220399B4 (en) | 2012-11-09 | 2015-07-30 | Koenig & Bauer Aktiengesellschaft | Sheet-fed printing machine with a transfer drum serving to transport a printing sheet |
| DE102012220401B4 (en) | 2012-11-09 | 2015-07-02 | Koenig & Bauer Aktiengesellschaft | Sheet-fed printing machine with a transfer drum serving to transport a printing sheet |
| DE102013209772B4 (en) | 2013-05-27 | 2017-01-26 | Koenig & Bauer Ag | Method for reprinting at least one individualized printed copy |
| DE102013211256B4 (en) | 2013-06-17 | 2019-04-25 | Koenig & Bauer Ag | Printing machine with several printing units printed together on one substrate |
| DE102013211255B4 (en) | 2013-06-17 | 2019-04-25 | Koenig & Bauer Ag | Printing machine with several printing units printed together on one substrate |
| DE102013211251B4 (en) | 2013-06-17 | 2017-02-16 | Koenig & Bauer Ag | Printing machine with several printing units printed together on one substrate |
| DE102013211250B4 (en) * | 2013-06-17 | 2019-05-02 | Koenig & Bauer Ag | Printing machine with several printing units printed together on one substrate |
| DE102013211246A1 (en) | 2013-06-17 | 2014-12-18 | Koenig & Bauer Aktiengesellschaft | Printing machine with several printing units printed together on one substrate |
| DE102015111525A1 (en) * | 2014-08-08 | 2016-02-11 | manroland sheetfed GmbH | Modular inkjet printing device |
| DE102014216287A1 (en) * | 2014-08-15 | 2016-02-18 | Koenig & Bauer Ag | Sheetfed press with a non-impact device |
| DE102016207398B3 (en) | 2015-09-09 | 2016-08-18 | Koenig & Bauer Ag | Machine arrangement for the sequential processing of a plurality of arcuate substrates each having a front side and a rear side |
| CN107160827B (en) * | 2016-04-11 | 2020-04-14 | 南京造币有限公司 | Sheet-fed flexographic printing machine |
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| IT1095199B (en) * | 1978-06-06 | 1985-08-10 | S F A Societa Di Fisica Applic | AUTOMATIC QUALITY CONTROL MACHINE ON FRESH BANKNOTES AND PAPERS OF FRESH PRESS |
| JPS57205153A (en) * | 1981-06-13 | 1982-12-16 | Komori Printing Mach Co Ltd | Inspecting rotary press |
| ATE61286T1 (en) * | 1987-11-27 | 1991-03-15 | Komori Printing Mach | SHEET-FED ROTARY PRESS. |
| DE4126643A1 (en) * | 1991-08-12 | 1993-02-18 | Koenig & Bauer Ag | DRUM FOR TRANSPORTING AND DELIVERING BOWS |
| DE19514259A1 (en) * | 1995-04-15 | 1996-10-17 | Roland Man Druckmasch | Method for impressing bar codes in printed sheets and device for carrying out the method |
| DE19533822A1 (en) * | 1995-09-13 | 1997-03-20 | Heidelberger Druckmasch Ag | Process for regulating the coloring when printing with a printing press |
| DE19624196C2 (en) * | 1996-06-18 | 1999-09-23 | Koenig & Bauer Ag | Device and method for sheet guidance in a qualitative assessment of processed sheets |
| JP4421066B2 (en) * | 2000-04-07 | 2010-02-24 | 株式会社小森コーポレーション | Double-sided printing machine quality inspection device |
| DE20006513U1 (en) * | 2000-04-08 | 2000-07-13 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Sheet-fed rotary printing machine |
| RU2248317C2 (en) * | 2000-05-08 | 2005-03-20 | Кба-Жиори С.А. | Sheet material advancing device |
| JP4950374B2 (en) * | 2000-06-23 | 2012-06-13 | 株式会社小森コーポレーション | Sheet-like object identification method and identification apparatus |
| JP2004136585A (en) * | 2002-10-18 | 2004-05-13 | Web Tec Kk | Apparatus for inspecting quality of printed matter |
| DE20303574U1 (en) * | 2003-03-06 | 2003-04-30 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Image inspection system for a printing press |
| DE102004020252B4 (en) * | 2003-05-07 | 2019-03-07 | Heidelberger Druckmaschinen Ag | Device for conveying sheets by a printing machine |
| DE10332211B3 (en) * | 2003-07-16 | 2005-02-10 | Koenig & Bauer Ag | Machine for processing sheets |
-
2006
- 2006-02-14 DE DE200610006676 patent/DE102006006676A1/en not_active Withdrawn
-
2007
- 2007-02-14 EP EP20070003120 patent/EP1818177B1/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016214908B4 (en) | 2016-08-10 | 2024-04-18 | Koenig & Bauer Ag | Machine arrangement for sequential processing of sheet-shaped substrates |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006006676A1 (en) | 2007-08-23 |
| EP1818177A2 (en) | 2007-08-15 |
| EP1818177A3 (en) | 2011-12-28 |
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