EP1061028B1 - Pneumatic sheet guiding device - Google Patents

Pneumatic sheet guiding device Download PDF

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Publication number
EP1061028B1
EP1061028B1 EP00112361A EP00112361A EP1061028B1 EP 1061028 B1 EP1061028 B1 EP 1061028B1 EP 00112361 A EP00112361 A EP 00112361A EP 00112361 A EP00112361 A EP 00112361A EP 1061028 B1 EP1061028 B1 EP 1061028B1
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EP
European Patent Office
Prior art keywords
air
format
controller
air generator
sheet
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.)
Expired - Lifetime
Application number
EP00112361A
Other languages
German (de)
French (fr)
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EP1061028A3 (en
EP1061028A2 (en
Inventor
Edgar Dr. Dörsman
Peter Dr. Wulf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication date
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Publication of EP1061028A2 publication Critical patent/EP1061028A2/en
Publication of EP1061028A3 publication Critical patent/EP1061028A3/en
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Classifications

    • 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
    • B65H5/36—Article guides or smoothers, e.g. movable in operation
    • B65H5/38—Article guides or smoothers, e.g. movable in operation immovable in operation
    • 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
    • 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
    • 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
    • B65H2406/00—Means using fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • 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
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • 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

Definitions

  • the invention relates to a pneumatic sheet guide according to the preamble of claim 1.
  • a sheet guiding device consists of an air guiding body designed as a flow chamber, the has air outlet holes on the side facing the arch.
  • An air generator stands in with the air baffle Active connection, so that the chamber of the air baffle with Negative or positive pressure can be applied.
  • the sheet guiding devices must be processable on the individual conditions of the substrate be adjustable.
  • An adjustment to the substrate format is done, for example, by the or switch off individual air nozzles. With one as a chamber trained air baffle (blow box) can do this Sliders take place by means of which the air exposure only in the area of the substrate format.
  • a Adaptation to the grammage of the substrate takes place in particular by adjusting the air generator, i.e. through the Strength of the blowing or suction air.
  • This prior art is designed as a blower Air generator upstream a controller so that the in the amount of air introduced per unit of time is changeable. This adjusts the air volume flow / the flow velocity to the peculiarities of the substrate.
  • DE 196 04 562 A1 describes a format-variable sheet guiding direction in the form of a flexible sheet guiding element between a fixed sheet guide surface and a variable format adjustable bow brake device known. Also here the air guide is adapted to the substrate format, especially the arc length. An adjustment the different substrate thicknesses is as in the previously mentioned font by a via a controller adjustable air generator possible.
  • a control and regulating device is one Sheet delivery for sheet processing machines, in particular for Sheet printing machines known.
  • Sheet printing machines are trained as suction wheels Air deflector adjusted across the print direction according to the format. Furthermore control of the application of suction or suction is carried out in accordance with the printing format Blowing air.
  • the object of the present invention is therefore a pneumatic Bow guide according to the preamble of claim 1 to expand in such a way that it is easy and convenient given print type easily to different formats adaptable setting option results.
  • the air generator upstream control an adjustment of the delivery rate of the air generator depending on the format related adjustment of the air baffle.
  • An embodiment of the invention provides that the Flow rate of the air generator according to a stored Characteristic curve depending on the substrate format made adjustment of the air baffle becomes.
  • the delivery rate of the air generator (for blowing and / or Suction air) is based on the maximum processable substrate format designed. Is now used for a certain grammage maximum sheet format an optimal setting of the blowing and / or Suction air is found by the controller the delivery rate according to the stored characteristic of the air generator when changing to smaller formats automatically adjusted. Becomes the air guide of the sheet guiding device for example by means of motor-adjustable Elements adapted to the substrate format, so is from the signals of the adjusting motors of the control which effect this information about the set format is supplied. According to the characteristic curve, this can then be used for this format appropriate value of the output of the air generator is determined become.
  • the air baffle is adjusted to different ones Sheet formats manually, so are appropriate To position the positioner, by means of the current setting of the air guide body (size) detectable and the invention Control can be fed.
  • the optimal setting of the sheet guiding device by means of advance waste in other formats made, the operator only needs the optimal value for the strength of the air flow (blowing and / or Suction air). Having the optimal value for that Flow rate of the suction air generator was found, the Printing machine converted to the actual production format, whereupon an automatic conversion accordingly the new format of the delivery rate of the suction air generator he follows.
  • One found in another sheet format optimal setting is thus between all sheet formats minimum and maximum sheet format transferable. The other necessary lengthy and also waste-causing updates in the case of a format change.
  • This characteristic can be linear, according to a theoretically determined connection or also have been empirically determined by experiment.
  • Essential is that at the maximum chamber volume of the air baffle existing flow conditions at the Nozzles facing the printing material (blowing and / or suction nozzles) even when changing the volume of the air baffle (different Sheet format) remain the same.
  • a correction factor is provided, by means of the lowering of the characteristic curve (from the maximum substrate format outgoing) is changeable.
  • the substrate format is changed when the format setting is changed the output of the air generator accordingly the characteristic curve lowered. Due to the additional correction factor, for example via the control center of the printing press can be specified, there is an additional one Change in the performance value with which the air generator is operated.
  • An air guiding body 1 designed as a box points to the a number facing a sheet not shown Air outlet openings 2.
  • the inside of the air baffle 1 thus forms a chamber 3, which in the exemplary embodiment shown (Fig. 1) by a movable slide 4 accordingly closed the format of the substrate, not shown becomes.
  • the Slider 4 placed so that the outside of the format range located air outlet openings 2 not with the air the chamber 3 are connected. recognizable a position of the slide 4 changes the volume of the Chamber 3 of the air baffle 1.
  • the air generator 6 can be a adjustable fan, a compressor or be a pump.
  • the slide 4 in the chamber 3 of the air guide 1 is over an adjusting means 5 remotely adjustable.
  • the adjusting means 5 can it is, for example, a servomotor, so that the slider 4 within the chamber 3 of the air guide body 1 via spindle drive or another suitable gear element in the position corresponding to the current sheet format is spendable.
  • the one designed, for example, as a controllable blower Air generator 6 is like the actuating means 5 with a controller 7 in signal connection.
  • the controller 7 includes in particular the electronic components for operating the engine of the Blower of the air generator 6 at a predetermined speed.
  • the Control 7 further comprises computer means and a memory in which the characteristic curve explained further below is filed.
  • the computer of the controller 7 are also the signals of the actuating means 5 of the slide 4 are supplied.
  • the controller 7 for the air generator 6 is one Information about the format-dependent setting of the air baffle 1 before.
  • a characteristic curve is stored in a memory of the controller 7, in which the context: Air generator output 6 - Sheet format (setting slide 4 - air guide 1) is filed.
  • the characteristic curve K was created by theoretical modeling calculated or determined in experiments.
  • Fig. 2 shows in principle the characteristic curve K, which is the function the power P to be applied by the air generator 6 as a function the format setting F (position slide 4 in Air baffle 1) indicates.
  • the maximum substrate format Slide 4 gives the maximum number of air outlet openings 2 of the air baffle 1 is free
  • the air generator 6 Boardlower
  • the Chamber 3 of the air guide body 1 is acted upon with air in such a way so that at the air outlet openings 2 certain flow state results.
  • the slider 4 in a dependent on the substrate format Move position, so the chamber 3 shrinks Depending on the format, fewer air outlet openings 2 aerated.
  • the Air generator 6 with a smaller than the maximum format Power P to operate. This dependence gives the Characteristic curve K ( Figure 2) again.
  • the power P of the air generator 6 can also be modified via a correction factor KF.
  • FIG. 2 it is indicated that the power P of the air generator 6 belonging to a specific format setting F can be modified in accordance with a manually adjustable correction factor KF.
  • the above-mentioned settings of the power of the air generator 6 as a function of the format setting F (position slide 4) can all be stored in a memory of the control station of the printing press and can be called up accordingly for repeat jobs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The pneumatic guide has an air conducting body (1) adjustable corresponding to the printed matter format working in conjunction with an air producer (6), which is adjustable by a control unit designed as a computer (7). A signal corresponding to a format dependent adjustment of the air conducting body is supplied to the computer, so that as a result, the computer adjusts the conveying power of the air producer, corresponding to the signals received.

Description

Die Erfindung betrifft eine pneumatische Bogenführung gemäß dem Oberbegriff von Anspruch 1.The invention relates to a pneumatic sheet guide according to the preamble of claim 1.

[Stand der Technik][State of the art]

Bei Bogendruckmaschinen finden an einer Vielzahl von Stellen pneumatische Bogenführungseinrichtungen Verwendung. Durch diese mit Blas- und/oder Saugluft betriebenen Einrichtungen werden Bogen durch die Maschine geleitet und insbesondere im Ausleger abgelegt. Eine Bogenführungseinrichtung besteht aus einem als Strömungskammer ausgebildetem Luftleitkörper, der an der dem Bogen zugewandten Seite Luftaustrittslöcher aufweist. Mit dem Luftleitkörper steht ein Lufterzeuger in Wirkverbindung, so dass die Kammer des Luftleitkörpers mit Unter- bzw. Überdruck beaufschlagbar ist.In sheetfed presses take place in a variety of places pneumatic sheet guiding devices use. By these operated with blowing and / or suction air sheets are passed through the machine and especially in the Boom put down. A sheet guiding device consists of an air guiding body designed as a flow chamber, the has air outlet holes on the side facing the arch. An air generator stands in with the air baffle Active connection, so that the chamber of the air baffle with Negative or positive pressure can be applied.

Da auf Bogenoffsetdruckmaschinen eine Vielzahl von Bedruckstoffformaten sowie Grammaturen (Dünndruckpapier - Karton) verarbeitbar sein sollen, müssen die Bogenführungseinrichtungen auf die individuellen Verhältnisse des Bedruckstoffes einstellbar sein. Eine Einstellung auf das Bedruckstoffformat (Breite, Länge Bogen) erfolgt beispielsweise durch das zu- bzw. abschalten einzelner Luftdüsen. Bei einem als Kammer ausgebildeten Luftleitkörper (Blaskasten) kann dies durch Schieber erfolgen, vermittels denen die Luftbeaufschlagung lediglich im Bereich des Bedruckstoffformates erfolgt. Eine Anpassung auf die Grammatur des Bedruckstoffes (insbesondere bei zum Flattern neigenden Bedruckstoffen) erfolgt insbesondere durch die Einstellung des Lufterzeugers, d.h. durch die Stärke der Blas- bzw. Saugluft.Because on sheetfed offset printing presses a large number of substrate formats as well as grammages (thin printing paper - cardboard) The sheet guiding devices must be processable on the individual conditions of the substrate be adjustable. An adjustment to the substrate format (Width, length of arch) is done, for example, by the or switch off individual air nozzles. With one as a chamber trained air baffle (blow box) can do this Sliders take place by means of which the air exposure only in the area of the substrate format. A Adaptation to the grammage of the substrate (in particular in the case of printing materials which tend to flutter) takes place in particular by adjusting the air generator, i.e. through the Strength of the blowing or suction air.

Aus der DE 197 47 040 A1 ist eine Luftpolsterführung für bogen- oder bahnförmige Materialien bekannt, bei der der aus den Düsen austretende Luftvolumenstrom und/oder die Strömungsgeschwindigkeit zwischen Leitkörper und Material unabhängig voneinander einstellbar ist, derart, dass die Proportionalität zwischen diesen Größen aufgehoben ist. Eine Ausführungsform dieses Standes der Technik zeigt hierbei einen als Kammer ausgebildeten Luftleitkörper, bei dem das Kammervolumen durch motorisch angetriebene Schieber entsprechend dem Bedrückstoffformat (Länge, Breite) einstellbar ist. So werden lediglich die zwischen den Schiebern liegenden Luftaustrittsöffnungen mit Blasluft beaufschlagt.DE 197 47 040 A1 describes an air cushion guide for sheet-like or sheet-like materials known in which the air volume flow emerging from the nozzles and / or the flow velocity between guide body and material independently is adjustable from each other such that the proportionality between these sizes is canceled. An embodiment this prior art shows one Air guiding body designed as a chamber, in which the chamber volume by means of motor-driven slides accordingly the substrate format (length, width) is adjustable. So only the air outlet openings between the slides blown air.

Bei diesem Stand der Technik ist dem als Gebläse ausgebildeten Lufterzeuger eine Steuerung vorgeordnet, so dass die in den Luftleitkörper eingebrachte Luftmenge pro Zeiteinheit veränderbar ist. Dadurch erfolgt eine Anpassung des Luftvolumenstroms / der Strömungsgeschwindigkeit an die Eigenarten des Bedruckstoffes.This prior art is designed as a blower Air generator upstream a controller so that the in the amount of air introduced per unit of time is changeable. This adjusts the air volume flow / the flow velocity to the peculiarities of the substrate.

Aus der DE 196 04 562 A1 ist eine formatvariable Bogenführungsenrichtung in Form eines flexiblen Bogenleitelementes zwischen einer feststehenden Bogenleitfläche und einer formatvariabel einstellbaren Bogenbremseinrichtung bekannt. Auch hier erfolgt eine Anpassung des Luftleitkörpers an das Bedruckstoffformat, insbesondere die Bogenlänge. Eine Anpassung an die unterschiedlichen Bedruckstoffstärken ist wie in der zuvor genannten Schrift durch einen über eine Steuerung einstellbaren Lufterzeuger möglich.DE 196 04 562 A1 describes a format-variable sheet guiding direction in the form of a flexible sheet guiding element between a fixed sheet guide surface and a variable format adjustable bow brake device known. Also here the air guide is adapted to the substrate format, especially the arc length. An adjustment the different substrate thicknesses is as in the previously mentioned font by a via a controller adjustable air generator possible.

Mittels derartiger Bogenführungseinrichtungen ist es möglich, sehr differenzierte Einstellungen auf das jeweilige Bogenformat in Verbindung mit der Bedruckstoffart (Grammatur) vorzunehmen. Optimale Einstellungen der Luft werden für Wiederholaufträge auch abgespeichert, um später bei gleichem / ähnlichem Bedruckstoff schnell die nötige Einstellung zu finden (DE 34 12 179 C2). Liegt für eine bestimmte Bedruckstoffsorte (Grammatur) eine optimale Einstellung des Lufterzeugers vor, so bewirkt eine Veränderung im Bedruckstoffformat (durch Formatwechsel oder Wiederholauftrag im anderen Format bedingt) eine Veränderung der Wirkung der strömenden Luft auf den Bedruckstoff. Dies hat seinen Grund darin, dass eine bei einem Bedruckstoffformat vorgenommene Einstellung des Lufterzeugers (Stärke der Luftförderleistung) bei einer Veränderung der effektiven Luftaustrittsfläche (Zahl der Düsen) eine Veränderung der austretenden Luft bewirkt. Demzufolge sind umfangreiche Nachjustierungen nötig, welche zeitaufwendig sind und unter Umständen auch - bis die optimale Einstellung gefunden ist - Makulatur verursachen.With such sheet guiding devices it is possible to very differentiated attitudes to the respective sheet format in connection with the type of substrate (grammage). Optimal air settings are used for repeat jobs also saved to later for the same / similar Printing material to quickly find the necessary setting (DE 34 12 179 C2). Lies for a certain type of substrate (Grammage) an optimal setting of the air generator, a change in the substrate format (through Format change or repeat order in different format required) a change in the effect of the flowing air the substrate. This is due to the fact that one at setting of the air generator made in a substrate format (Strength of air delivery capacity) in the event of a change the effective air outlet area (number of nozzles) Changes in the exiting air causes. As a result extensive readjustments necessary, which is time-consuming are and possibly also - until the optimal setting is found - cause waste.

Aus der DE 34 13 179 A1 ist eine Steuer- und Regelvorrichtung eines Bogenauslegers für bogenverarbeitende Maschinen, insbesondere für Bogendruckmaschinen bekannt. Hier werden als Saugräder ausgebildete Luftleitkörper entsprechend dem Format quer zur Druckrichtung verstellt. Femer erfolgt eine das Druckformat angepasste Steuerung der Beaufschlagung mit Saugoder Blasluft.From DE 34 13 179 A1 a control and regulating device is one Sheet delivery for sheet processing machines, in particular for Sheet printing machines known. Here are trained as suction wheels Air deflector adjusted across the print direction according to the format. furthermore control of the application of suction or suction is carried out in accordance with the printing format Blowing air.

[Aufgabe der Erfindung]OBJECT OF THE INVENTION

Aufgabe der vorliegenden Erfindung ist es daher, eine pneumatische Bogenführung gemäß dem Oberbegriff von Anspruch 1 derartig zu erweitern, so dass sich eine einfache und bei gegebener Bedrucksorte leicht an unterschiedliche Formate anpaßbare Einstellmöglichkeit ergibt.The object of the present invention is therefore a pneumatic Bow guide according to the preamble of claim 1 to expand in such a way that it is easy and convenient given print type easily to different formats adaptable setting option results.

Gelöst wird diese Aufgabe durch die kennzeichnenden Merkmale von Anspruch 1. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This task is solved by the characteristic features of claim 1. Developments of the invention result from the subclaims.

[Beispiele][Examples]

Gemäß der Erfindung ist vorgesehen, dass durch die dem Lufterzeuger vorgeordnete Steuerung eine Anpassung der Förderleistung des Lufterzeugers in Abhängigkeit der auf das Format bezogenen Einstellung des Luftleitkörpers erfolgt. Gemäß einer Ausführungsform der Erfindung ist vorgesehen, dass die Förderleistung des Lufterzeugers gemäß einer gespeicherten Kennlinie in Abhängigkeit der auf das Bedruckstoffformat vorgenommenen Einstellung des Luftleitkörpers nachgeführt wird. According to the invention it is provided that by the air generator upstream control an adjustment of the delivery rate of the air generator depending on the format related adjustment of the air baffle. According to An embodiment of the invention provides that the Flow rate of the air generator according to a stored Characteristic curve depending on the substrate format made adjustment of the air baffle becomes.

Die Förderleistung des Lufterzeugers (für Blas- und/oder Saugluft) ist auf das maximal verarbeitbare Bedruckstoffformat ausgelegt. Wird nun für eine bestimmte Grammatur beim maximalen Bogenformat eine optimale Einstellung der Blasund/oder Saugluft gefunden, so wird durch die Steuerung entsprechend der gespeicherten Kennlinie die Förderleistung des Lufterzeugers bei Veränderung zu kleineren Formaten hin automatisch nachgeregelt. Wird der Luftleitkörper der Bogenführungseinrichtung beispielsweise durch motorisch verstellbare Elemente an das Bedruckstoffformat angepaßt, so wird aus den Signalen der dies bewirkenden Verstellmotore der Steuerung eine Information über das eingestellte Format zugeführt. Entsprechend der Kennlinie kann dann der zu diesem Format gehörige Wert der Förderleistung des Lufterzeugers ermittelt werden. Erfolgt die Anpassung des Luftleitkörpers auf unterschiedliche Bogenformate manuell, so sind entsprechende Stellungsgeber anzuordnen, vermittels den die aktuelle Einstellung des Luftleitkörpers (Größe) erfaßbar und der erfindungsgemäßen Steuerung zuführbar ist.The delivery rate of the air generator (for blowing and / or Suction air) is based on the maximum processable substrate format designed. Is now used for a certain grammage maximum sheet format an optimal setting of the blowing and / or Suction air is found by the controller the delivery rate according to the stored characteristic of the air generator when changing to smaller formats automatically adjusted. Becomes the air guide of the sheet guiding device for example by means of motor-adjustable Elements adapted to the substrate format, so is from the signals of the adjusting motors of the control which effect this information about the set format is supplied. According to the characteristic curve, this can then be used for this format appropriate value of the output of the air generator is determined become. The air baffle is adjusted to different ones Sheet formats manually, so are appropriate To position the positioner, by means of the current setting of the air guide body (size) detectable and the invention Control can be fed.

Soll beispielsweise die optimale Einstellung der Bogenführungseinrichtung mittels Vorlaufmakulatur anderen Formates vorgenommen werden, braucht die Bedienperson lediglich den optimalen Wert für die Stärke des Luftstromes (Blas- und/oder Saugluft) einzustellen. Nachdem der optimale Wert für die Förderleistung des Sauglufterzeugers gefunden wurde, wird die Druckmaschine auf das eigentliche Produktionsformat umgestellt, woraufhin dann ein selbsttätiges Umrechnen entsprechend dem neuen Format der Förderleistung des Sauglufterzeugers erfolgt. Eine bei einem anderen Bogenformat gefundene optimale Einstellung ist somit auf alle Bogenformate zwischen minimalen und maximalen Bogenformat übertragbar. Die sonst nötigen langwierigen und auch Makulatur verursachenden Nachführungen bei einem Formatwechsel entfallen.For example, the optimal setting of the sheet guiding device by means of advance waste in other formats made, the operator only needs the optimal value for the strength of the air flow (blowing and / or Suction air). Having the optimal value for that Flow rate of the suction air generator was found, the Printing machine converted to the actual production format, whereupon an automatic conversion accordingly the new format of the delivery rate of the suction air generator he follows. One found in another sheet format optimal setting is thus between all sheet formats minimum and maximum sheet format transferable. The other necessary lengthy and also waste-causing updates in the case of a format change.

Gemäß einer einfachen Ausführungsform der Erfindung besteht die Kennlinie aus einer die Förderleistung des Sauglufterzeugers - vom maximalen Kammervolumen des Luftleitkörpers ausgehend - absenkenden Kennlinie. Diese Kennlinie kann linear, nach einem theoretisch ermittelten Zusammenhang oder auch empirisch durch Versuche ermittelt worden sein. Wesentlich ist hierbei, dass die beim maximalen Kammervolumen des Luftleitkörpers vorliegenden Strömungsgegebenheiten an den dem Bedruckstoff zugewandten Düsen (Blas- und/oder Saugdüsen) auch bei Veränderung des Volumens des Luftleitkörpers (unterschiedliches Bogenformat) gleichbleiben. Wird beispielsweise die Breite eines Luftaustrittsdüsen aufweisenden Bogenleitbleches mittels Schieber oder anderen Einrichtungen an unterschiedliche Formate angepaßt, so weisen die beaufschlagten Düsen (innerhalb des Formates) stets die gleiche Strömungseigensschaft und somit auch die Wirkung auf den Bedruckstoff auf.According to a simple embodiment of the invention the characteristic curve from a the delivery rate of the suction air generator - Starting from the maximum chamber volume of the air baffle - lowering characteristic. This characteristic can be linear, according to a theoretically determined connection or also have been empirically determined by experiment. Essential is that at the maximum chamber volume of the air baffle existing flow conditions at the Nozzles facing the printing material (blowing and / or suction nozzles) even when changing the volume of the air baffle (different Sheet format) remain the same. For example the width of a sheet guide plate having air outlet nozzles to different by means of sliders or other devices Formats adapted, so the charged Nozzles (within the format) always have the same flow property and therefore also the effect on the substrate on.

Gemäß einer bevorzugten Weiterbildung der Erfindung ist vorgesehen, dass ein Korrekturfaktor vorgesehen ist, vermittels dem die Absenkung der Kennlinie (vom maximalen Bedruckstoffformat ausgehend) veränderbar ist. Ausgehend vom maximalen Bedruckstoffformat wird bei einer Veränderung der Formateinstellung die Förderleistung des Lufterzeugers entsprechend der Kennlinie abgesenkt. Durch den zusätzlichen Korrekturfaktor, der beispielsweise über den Leitstand der Druckmaschine vorgegeben werden kann, erfolgt eine zusätzliche Veränderung des Leistungswertes, mit dem der Lufterzeuger betrieben wird. According to a preferred development of the invention provided that a correction factor is provided, by means of the lowering of the characteristic curve (from the maximum substrate format outgoing) is changeable. Starting from the maximum The substrate format is changed when the format setting is changed the output of the air generator accordingly the characteristic curve lowered. Due to the additional correction factor, for example via the control center of the printing press can be specified, there is an additional one Change in the performance value with which the air generator is operated.

Des weiteren erfolgt die Erläuterung eines Ausführungsbeispiels der Erfindung anhand der Zeichnungen.Furthermore, an exemplary embodiment is explained the invention with reference to the drawings.

Es zeigt:

Fig. 1
ein Luftleitkörper mit Lufterzeuger sowie zugeordneter Steuerung, und
Fig. 2
eine Kennlinie zur Erläuterung der formatabhängigen Einstellung des Lufterzeugers.
It shows:
Fig. 1
an air baffle with air generator and associated control, and
Fig. 2
a characteristic curve to explain the format-dependent setting of the air generator.

Ein als Kasten ausgebildeter Luftleitkörper 1 weist an der einem nicht dargestellten Bogen zugewandten Seite eine Anzahl Luftaustrittsöffnungen 2 auf. Das Innere des Luftleitkörpers 1 bildet so eine Kammer 3, die im gezeigten Ausführungsbeispiel (Fig. 1) durch einen bewegbaren Schieber 4 entsprechend dem Format des nicht dargestellten Bedruckstoffes verschlossen wird. Entsprechend dem Format des Bedruckstoffes wird der Schieber 4 plaziert, so dass die außerhalb des Formatbereiches gelegenen Luftaustrittsöffnungen 2 nicht mit der Luftbeaufschlagung der Kammer 3 in Verbindung sind. Erkennbar verändert eine Stellung des Schiebers 4 das Volumen der Kammer 3 des Luftleitkörpers 1. Zur Beaufschlagung des Luftleitkörpers 1 (Kammer 3) steht dieser mit einem steuerbaren Lufterzeuger (Erzeugung von Druckluft bzw. Luft mit Unterdruck) 6 in Verbindung. Der Lufterzeuger 6 kann hierbei ein in der Förderleistung einstellbares Gebläse, ein Kompressor bzw. eine Pumpe sein.An air guiding body 1 designed as a box points to the a number facing a sheet not shown Air outlet openings 2. The inside of the air baffle 1 thus forms a chamber 3, which in the exemplary embodiment shown (Fig. 1) by a movable slide 4 accordingly closed the format of the substrate, not shown becomes. Depending on the format of the substrate, the Slider 4 placed so that the outside of the format range located air outlet openings 2 not with the air the chamber 3 are connected. recognizable a position of the slide 4 changes the volume of the Chamber 3 of the air baffle 1. To act on the air baffle 1 (chamber 3) stands this with a controllable Air generator (generation of compressed air or air with negative pressure) 6 in connection. The air generator 6 can be a adjustable fan, a compressor or be a pump.

Der Schieber 4 in der Kammer 3 des Luftleitkörpers 1 ist über ein Stellmittel 5 fernverstellbar. Bei dem Stellmittel 5 kann es sich beispielsweise um einen Stellmotor handeln, so dass der Schieber 4 innerhalb der Kammer 3 des Luftleitkörpers 1 über Spindeltrieb oder ein sonst geeignetes Getriebeelement in die für das aktuelle Bogenformat entsprechende Stellung verbringbar ist.The slide 4 in the chamber 3 of the air guide 1 is over an adjusting means 5 remotely adjustable. With the adjusting means 5 can it is, for example, a servomotor, so that the slider 4 within the chamber 3 of the air guide body 1 via spindle drive or another suitable gear element in the position corresponding to the current sheet format is spendable.

Der beispielsweise als steuerbares Gebläse ausgebildete Lufterzeuger 6 steht wie das Stellmittel 5 mit einer Steuerung 7 in Signalverbindung. Ist der Lufterzeuger 6 als steuerbares Gebläse ausgebildet, umfaßt die Steuerung 7 insbesondere die elektronischen Bauteile zum Betreiben des Motors des Gebläses des Lufterzeugers 6 mit vorgegebener Drehzahl. Die Steuerung 7 umfaßt ferner Rechnermittel sowie einen Speicher in dem die noch weiter unten stehend erläuterte Kennlinie abgelegt ist. Dem Rechner der Steuerung 7 werden ebenfalls die Signale des Stellmittels 5 des Schiebers 4 zugeführt. Dadurch liegt der Steuerung 7 für den Lufterzeuger 6 eine Information über die formatabhängige Einstellung des Luftleitkörpers 1 vor.The one designed, for example, as a controllable blower Air generator 6 is like the actuating means 5 with a controller 7 in signal connection. Is the air generator 6 as controllable Designed fan, the controller 7 includes in particular the electronic components for operating the engine of the Blower of the air generator 6 at a predetermined speed. The Control 7 further comprises computer means and a memory in which the characteristic curve explained further below is filed. The computer of the controller 7 are also the signals of the actuating means 5 of the slide 4 are supplied. As a result, the controller 7 for the air generator 6 is one Information about the format-dependent setting of the air baffle 1 before.

In einem Speicher der Steuerung 7 ist eine Kennlinie abgelegt, in welcher der Zusammenhang : Leistung Lufterzeuger 6 - Bogenformat (Einstellung Schieber 4 - Luftleitkörper 1) abgelegt ist. Die Kennlinie K wurde durch theoretische Modellbildung errechnet oder in Versuchen ermittelt.A characteristic curve is stored in a memory of the controller 7, in which the context: Air generator output 6 - Sheet format (setting slide 4 - air guide 1) is filed. The characteristic curve K was created by theoretical modeling calculated or determined in experiments.

Fig. 2 zeigt prinzipiell die Kennlinie K, welche die Funktion der vom Lufterzeuger 6 aufzubringenden Leistung P in Abhängigkeit der Formateinstellung F (Stellung Schieber 4 in Luftleitkörper 1) angibt. Beim maximalen Bedruckstoffformat (Schieber 4 gibt die maximale Anzahl der Luftaustrittsöffnungen 2 des Luftleitkörpers 1 frei) ist vom Lufterzeuger 6 (Gebläse) die maximale Leistung aufzubringen. Somit wird die Kammer 3 des Luftleitkörpers 1 mit Luft derartig beaufschlagt, so dass sich an den Luftaustrittsöffnungen 2 ein bestimmter Strömungszustand ergibt. Wird über das Stellmittel 5 der Schieber 4 in eine dem Bedruckstoffformat abhängige Position verfahren, so verkleinert sich die Kammer 3, es werden also formatabhängig weniger Luftaustrittsöffnungen 2 mit Luft beaufschlagt. Um wiederum den gleichen Strömungszustand an den Luftaustrittsöffnungen 2 zu erzielen, ist der Lufterzeuger 6 mit einer gegenüber dem Maximalformat geringeren Leistung P zu betreiben. Diese Abhängigkeit gibt die Kennlinie K (Figur 2) wieder.Fig. 2 shows in principle the characteristic curve K, which is the function the power P to be applied by the air generator 6 as a function the format setting F (position slide 4 in Air baffle 1) indicates. At the maximum substrate format (Slider 4 gives the maximum number of air outlet openings 2 of the air baffle 1 is free) from the air generator 6 (Blower) to apply the maximum power. Thus the Chamber 3 of the air guide body 1 is acted upon with air in such a way so that at the air outlet openings 2 certain flow state results. Is about the actuating device 5 the slider 4 in a dependent on the substrate format Move position, so the chamber 3 shrinks Depending on the format, fewer air outlet openings 2 aerated. To turn the same flow state To achieve at the air outlet openings 2 is the Air generator 6 with a smaller than the maximum format Power P to operate. This dependence gives the Characteristic curve K (Figure 2) again.

Neben der durch die in einem Speicher der Steuerung 7 abgelegten Kennlinie K bedingte Abhängigkeit der Leistung P des Lufterzeugers 6 als Funktion des Formates F ist die Leistung P des Lufterzeugers 6 zusätzlich auch über einen Korrekturfaktor KF modifizierbar. In Figur 2 ist angedeutet, dass die zu einer bestimmten Formateinstellung F gehörende Leistung P des Lufterzeugers 6 entsprechend einem manuell einstellbaren Korrekturfaktor KF modifizierbar ist.
Die zuvorstehend angesprochenen Einstellungen der Leistungen des Lufterzeugers 6 als Funktion der Formateinstellung F (Stellung Schieber 4) sind allesamt in einem Speicher des Leitstandes der Druckmaschine abspeicherbar und bei Wiederholaufträgen entsprechend aufrufbar. In addition to the dependency of the power P of the air generator 6 as a function of the format F due to the characteristic curve K stored in a memory of the controller 7, the power P of the air generator 6 can also be modified via a correction factor KF. In FIG. 2 it is indicated that the power P of the air generator 6 belonging to a specific format setting F can be modified in accordance with a manually adjustable correction factor KF.
The above-mentioned settings of the power of the air generator 6 as a function of the format setting F (position slide 4) can all be stored in a memory of the control station of the printing press and can be called up accordingly for repeat jobs.

[Bezugszeichenliste][REFERENCE LIST]

11
Luftleitkörper (pneumatische Bogenführung)Air guide (pneumatic sheet guide)
22
LuftaustrittsöffnungAir outlet opening
33
Kammerchamber
44
Schieberpusher
55
Stellmittel (Stellmotor)Actuator (actuator)
66
Lufterzeuger (Gebläse, Pumpe, Kompressor)Air generator (blower, pump, compressor)
77
Steuerungcontrol
KK
Kennliniecurve
FF
Formateinstellungsize adjustment
PP
Leistung (Lufterzeuger 6)Performance (air generator 6)
KFKF
Korrekturfaktor (Kennlinie K)Correction factor (characteristic curve K)

Claims (5)

  1. Pneumatic sheet guide in a printing press, in particular a sheet-fed offset press, having an air guide body which can be set in accordance with the printing material format, and an air generator connected to the air guide body, it being possible for the delivery of the air generator to be set by means of a controller arranged upstream,
    characterized in that the controller (7) can be supplied with a signal corresponding to the format-dependent setting of the air guide body (1), the delivery of the air generator (6) being set by the controller (7) in accordance with these signals.
  2. Pneumatic sheet guide according to Claim 1, characterized in that the controller (7) is constructed as a computer.
  3. Pneumatic sheet guide according to Claim 2, characterized in that the controller (7) has a memory with characteristic curve (K), the characteristic curve (K) reproducing the delivery (P) to be provided by the air generator (6) as a function of the printing material format (F).
  4. Pneumatic sheet guide according to Claim 3, characterized in that the characteristic curve (K) of the controller (7) can be modified via a correction factor (KF) which can be entered manually.
  5. Pneumatic sheet guide according to one of the preceding claims, characterized in that, in order to set the air guide body (1) as a function of the format, an actuating means (5) is provided whose signals can be supplied to the controller (7).
EP00112361A 1999-06-18 2000-06-09 Pneumatic sheet guiding device Expired - Lifetime EP1061028B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29910696U DE29910696U1 (en) 1999-06-18 1999-06-18 Pneumatic sheet guide
DE29910696U 1999-06-18

Publications (3)

Publication Number Publication Date
EP1061028A2 EP1061028A2 (en) 2000-12-20
EP1061028A3 EP1061028A3 (en) 2001-10-10
EP1061028B1 true EP1061028B1 (en) 2004-02-18

Family

ID=8074995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00112361A Expired - Lifetime EP1061028B1 (en) 1999-06-18 2000-06-09 Pneumatic sheet guiding device

Country Status (3)

Country Link
EP (1) EP1061028B1 (en)
AT (1) ATE259752T1 (en)
DE (2) DE29910696U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000308A1 (en) * 2000-01-05 2001-07-12 Heidelberger Druckmasch Ag Air duct system in a sheet-fed press
DE102008020295A1 (en) * 2008-04-22 2009-10-29 Krones Ag Device for transporting film

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3413179C2 (en) * 1984-04-07 1995-02-23 Roland Man Druckmasch Control and regulating device of a sheet delivery for sheet processing machines, in particular for sheet printing machines
DE19604562C2 (en) * 1996-02-08 2002-11-21 Heidelberger Druckmasch Ag Device for guiding sheets
DE19714204C2 (en) * 1997-04-07 2000-08-31 Roland Man Druckmasch Device for regulating the blown air on a sheet feeder
DE19747040A1 (en) * 1997-08-28 1999-03-04 Heidelberger Druckmasch Ag Air cushion guide
DE19738929C1 (en) * 1997-09-05 1998-08-27 Brehmer Buchbindereimaschinen Handler for folded sheets

Also Published As

Publication number Publication date
ATE259752T1 (en) 2004-03-15
DE29910696U1 (en) 1999-08-12
EP1061028A3 (en) 2001-10-10
EP1061028A2 (en) 2000-12-20
DE50005298D1 (en) 2004-03-25

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