EP1826002A2 - Printing press with web tension control - Google Patents

Printing press with web tension control Download PDF

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Publication number
EP1826002A2
EP1826002A2 EP06125386A EP06125386A EP1826002A2 EP 1826002 A2 EP1826002 A2 EP 1826002A2 EP 06125386 A EP06125386 A EP 06125386A EP 06125386 A EP06125386 A EP 06125386A EP 1826002 A2 EP1826002 A2 EP 1826002A2
Authority
EP
European Patent Office
Prior art keywords
cooling roller
printing machine
machine according
roller
web
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.)
Granted
Application number
EP06125386A
Other languages
German (de)
French (fr)
Other versions
EP1826002B1 (en
EP1826002A3 (en
Inventor
Stefan Ohlhauser
Thomas Potzkai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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Filing date
Publication date
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Publication of EP1826002A2 publication Critical patent/EP1826002A2/en
Publication of EP1826002A3 publication Critical patent/EP1826002A3/en
Application granted granted Critical
Publication of EP1826002B1 publication Critical patent/EP1826002B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0476—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0476—Cooling
    • B41F23/0479—Cooling using chill rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/192—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web motor-controlled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/70—Driving devices associated with particular installations or situations
    • B41P2213/73—Driving devices for multicolour presses
    • B41P2213/734—Driving devices for multicolour presses each printing unit being driven by its own electric motor, i.e. electric shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/514—Modifying physical properties
    • B65H2301/5144—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/26—Piezoelectric sensors
    • 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 present invention relates to a printing machine having at least one printing unit and a method for controlling a web tension.
  • rollers In a simple web tension control run several driven rollers with a fixed predetermined ratio of their speeds to each other, and to control the web tension, it is sufficient to detect them at a single measuring point and adjust the speeds of the driven rollers based on the measured value.
  • the rollers can be driven by a common motor via a real master shaft in a fixed speed ratio to each other, or the individual driven rollers associated motors can be operated via an electronically implemented virtual master axis in a fixed speed and phase relationship.
  • variable properties of the web make it difficult to maintain a desired course of web tension on the path of the web through the machine for a long time.
  • the DE 198 34 725 A1 proposes, therefore, to use several web tension sensors in order to regulate the web tension in sections in each case in the printing press.
  • the DE 100 14 535 A1 describes a method for controlling web tension forces in a web-fed rotary press with dryer and chill rolls. In this case, driven cooling rollers are provided, which are not used for measuring web forces.
  • the object of the invention is to provide a printing machine with web tension control and a method for controlling a web tension.
  • the governor assembly may include a central control unit for setting a general target speed for the driven rollers and a correction unit for generating the speed setpoint for the driven cooling roller by superimposing the general target speed for the driven cooling roller with a correction term derived from a measured at one of these cooling roller adjacent measuring point web tension is dependent.
  • a display device for qualitatively or quantitatively displaying a deviation between the speed setpoint and the general target speed can be provided, so that an operator can recognize when and if so to what extent web tension fluctuations exist.
  • the measuring point on the basis of the measurement results of the cooling roller is speed-controlled, preferably comprises at least one force sensor which is adapted to detect a bearing force acting on the driven cooling roller bearing force. This saves a separate measuring roller for the measuring point.
  • the web tension in front of and behind the driven roll can be measured by a horizontally sensitive force sensor independent of the weight of the roll.
  • the controller arrangement is expediently arranged to regulate the speed setpoint the lower, the stronger this force is. Conversely, if the force sensor is sensitive to a force oriented in the outgoing direction of the web from the chill roll, the governor assembly can regulate the speed setpoint the higher the stronger the force.
  • the measuring point comprises two force sensors which are sensitive to forces oriented in different directions. Since the roller is driven, the web tension in front of and behind the roller can each assume different values. With the help of the pair of sensors, it is possible to measure the web tension in front of and behind the roll independently of each other.
  • the roller can therefore not only the measuring roller of a single conventional measuring point, but two such Replace measuring rollers.
  • the wrap angle of the web on the roller should be different from 180 ° and preferably about 90 ° or 270 °.
  • the folding apparatus shown in Fig. 1 are in a conventional manner printing units in which a web 01, z. B. a web of material 01, both sides is printed multi-colored, and a dryer for drying the freshly printed web 01 upstream.
  • the entrance of the folder forms an arrangement 02, z. B. a chill roll stand 02, with a plurality of rollers 03; 04; z. B. cooling rollers 03; 04, of which the cooling roller 03 located farthest on the input side is driven by a motor (not shown).
  • a Motor not shown
  • On the way of the material web 01 follows on the cooling roller assembly 02 a Wiederbefeuchtungsstrom 06, in which the material web 01 may be supplied again in excess moisture withdrawn to the web 01 wave-free received and easy to continue processing.
  • the web 01 is up to another roller 07, z. B. a Hauptzugwalze 07, which is also preferably via a measuring roller in front of the main tension roller 07 analogous to the cooling roller stand "track voltage controlled" out, on which a knife 08 is arranged for disassembling the web 01 in a plurality of sub-webs.
  • the partial webs are turned in a turning table 13 and placed one above the other and reach in superimposed form another roller 09, z. B. the Trichterzugwalze 09 at the entrance of a former 11.
  • the longitudinally folded at the exit of the former 11 01 reaches a Querfalzapparat 12, in which the web 01 in the familiar manner cut into individual signatures and then the signatures are folded and designed transversely.
  • the speeds at which the cooling roller 03, the main tension roller 07 and the Trichterzugwalze 09 are driven are essentially predetermined by the speed at which the web 01 passes through the printing units.
  • the moistening of the web 01 during printing, its dehydration in the dryer and possibly the rewetting in the Wiederbefeuchtungsstrom 06 cause expansion or shrinkage operations of the web 01, which, if not counteracted, cause fluctuations in the web tension and cause disturbances of the printing process can. Stress jumps can on the way of the web 01 - apart from friction losses - substantially on driven rollers 03; 07; 09 occur. Therefore, at each section of the web 01 between two driven rollers, in which the properties of the web 01 may change, it is necessary to be able to measure the tension.
  • a measuring roller 16 arranged above the re-wetting plant 06 is used, which is looped around by the web 01 to a little more than 90 °.
  • the Trichterzugwalze 09 follows the Hauptzugwalze 07 preferably angle synchronously.
  • a voltage measuring device is provided for this section.
  • Fig. 2 is a plan view of a piece of a side frame plate 17 of the chill roll stand 02 having an opening 18 through which a rotatable shaft 19 of the chill roll 03 extends.
  • the axis 19 shown in section is hollow, and its inner cavity serves for supplying and discharging cooling water from the roller 03.
  • the axis 19 is held in a rolling bearing 21, the outer ring in the opening 18 by a wedge 22 or other suitable Means is pressed against two piezo elements 23 and 24, respectively.
  • the piezoelectric element 23 is located at the height of the axis of rotation 19 and is sensitive to horizontal forces, while the piezoelectric element 24 located below the axis 19 is sensitive to vertical forces.
  • Fig. 3 illustrates the distribution of the forces exerted by the web 01 on the roller 03 forces.
  • 01a designates a portion of the web of material 01 which approaches the roll 03 coming from the printing units
  • 01b is a web section which tapers from the cooling roll 03 to the following cooling roll 04.
  • the stresses of the web 01 in these two sections 01a; 01b correspond respectively to the sections parallel force vectors Fa or Fb.
  • the force resulting from their superposition is denoted by Fs.
  • the piezo element 23 detects the horizontal component Fh of Fs and the piezo element 24 detects the vertical component Fv.
  • the measurement signals from the piezo elements 23; 24 receives, able to calculate the forces Fa and Fb and thus the web tension in both sections 01 a and 01 b.
  • the prerequisite for this is merely that the sections 01 a, 01 b are not parallel, and the calculation is the more accurate, the closer the intersection angle between the two sections 01 a and 01 b at right angles, ie the closer the wrap angle Web 01 on the roll 03 at 90 ° or 270 °.
  • Fa, Fb, Fh, Fv are drawn with different orientations in FIG. 3, but it is understood that one or both of Fa and Fb can also be parallel to Fh or Fv, which is the calculation of the Web stresses on the measured forces Fh, Fv simplified.
  • Fig. 4 shows schematically the structure of a speed and web tension control for the printing press shown in Fig. 1 with folder.
  • a controller 29 of the cooling roller 03 and a controller 31 of the main roller 07 is given a general target speed. This can for example be input directly to a control station, or it can be derived from the speed at which the material web 01 passes through the printing press upstream of the folder.
  • the speed controllers 29, 31 are each connected to a web tension controller 32 and 33, respectively, based on the piezoelectric elements 23; 24 or forces measured on the measuring roller 16 estimates the web tension and compares it with a predetermined desired value which can be set at the control station via operating elements 34.
  • the Web tension controller 32; 33 each fixed a correction value which is superimposed in the speed controllers 29 and 31 of the specified by the virtual master shaft 28 general target speed to obtain an adjusted target speed for the cooling roller 03 and the main tension roller 07.
  • a speed controller 36 of the Trichterzugwalze 09 is not directly connected to the virtual master shaft 28, but is coupled to the main tension roller 07 to drive the web 01 at any time at the same speed as the latter, preferably angle synchronously.
  • the speed controllers 29; 31; 36 are each associated controls 37 on the control station, on the deviations from the general target speed individually for the different driven rollers 03; 07; 09 are adjustable by hand.
  • the voltage regulator 32 When the voltage regulator 32 detects too low (or too high) web tension in the section 01 a, it controls the speed controller 29 to up (or down) the speed setpoint for the chill roll 03. From this speed adjustment results in a decrease (increase) of the web tension in the section 01 b, which is measured on the measuring roller 16 and in this way causes the voltage regulator 33 to influence the speed setpoint for the main tension roller 07. Simultaneously with a correction of the rotational speed, a correction of the rotational speed of the Trichterzugwalze 09 is made via the controller 36, so that the tension of the web 01 in the non-measured section between the main tension roller 07 and Trichterzugwalze 09 does not vary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)

Abstract

The machine has a set of rollers (3, 7, 9) driven and speed controlled by a controller arrangement. The controller arrangement is arranged such that rotation speed desired value of the cooling roller (3) is provided in variable relation to rotation speed desired value of one of the driven rollers (7, 9). A measuring point (16) is assigned to the cooling roller. The measuring point of the cooling roller detects tension of a material web wound on the cooling roller. An independent claim is also included for a method for regulating web tension in a printing machine.

Description

Die vorliegende Erfindung betrifft eine Druckmaschine mit wenigstens einer Druckeinheit und ein Verfahren zum Regeln einer Bahnspannung.The present invention relates to a printing machine having at least one printing unit and a method for controlling a web tension.

Bei einer einfachen Bahnspannungsreglung laufen mehrere angetriebene Walzen mit einem fest vorgegebenen Verhältnis ihrer Drehzahlen zueinander, und zur Regelung der Bahnspannung genügt es, diese an einer einzigen Messstelle zu erfassen und die Drehzahlen der angetriebenen Walzen anhand des Messwerts einzustellen. Dabei können die Walzen von einem gemeinsamen Motor über eine reale Leitachse in einem festen Drehzahlverhältnis zueinander angetrieben sein, oder es können den einzelnen angetriebenen Walzen zugeordnete Motoren über eine elektronisch implementierte virtuelle Leitachse in einem festen Drehzahl- und Phasenverhältnis zueinander betrieben sein. Bei einem solchen Aufbau ist es schwierig und langwierig, Bahnspannungsschwankungen auszuregeln, die beispielsweise durch einen fliegenden Rollenwechsel (schwankende Wickelhärte der Papierrolle von außen nach innen) oder durch während des Bedruckens veränderliche Eigenschaften der Bahn wie etwa Farbe- und Feuchtebelegung verursacht sein können. Insbesondere derartige veränderliche Eigenschaften der Bahn machen es schwierig, einen gewünschten Verlauf der Bahnspannung auf dem Weg der Bahn durch die Maschine längere Zeit hindurch aufrecht zu erhalten.In a simple web tension control run several driven rollers with a fixed predetermined ratio of their speeds to each other, and to control the web tension, it is sufficient to detect them at a single measuring point and adjust the speeds of the driven rollers based on the measured value. In this case, the rollers can be driven by a common motor via a real master shaft in a fixed speed ratio to each other, or the individual driven rollers associated motors can be operated via an electronically implemented virtual master axis in a fixed speed and phase relationship. With such a structure, it is difficult and tedious to correct web tension variations caused by, for example, a flying reel change (fluctuating reeling hardness of the paper roll from outside to inside) or variable properties of the web during printing such as inking and moistening. In particular, such variable properties of the web make it difficult to maintain a desired course of web tension on the path of the web through the machine for a long time.

Die DE 198 34 725 A1 schlägt daher vor, mehrere Bahnspannungssensoren zu verwenden, um die Bahnspannung in der Druckmaschine jeweils abschnittsweise zu regeln.The DE 198 34 725 A1 proposes, therefore, to use several web tension sensors in order to regulate the web tension in sections in each case in the printing press.

Die DE 100 14 535 A1 beschreibt ein Verfahren zur Regelung von Bahnzugskräften in einer Rollenrotationsdruckmaschine mit Trockner und Kühlwalzen. Dabei sind angetriebene Kühlwalzen vorgesehen, die aber nicht zur Messung von Bahnkräften verwendet werden.The DE 100 14 535 A1 describes a method for controlling web tension forces in a web-fed rotary press with dryer and chill rolls. In this case, driven cooling rollers are provided, which are not used for measuring web forces.

Aufgabe der Erfindung ist, eine Druckmaschine mit Bahnspannungsregelung und ein Verfahren zum Regeln einer Bahnspannung zu schaffen.The object of the invention is to provide a printing machine with web tension control and a method for controlling a web tension.

Die Aufgabe wird gelöst durch eine Druckmaschine mit den Merkmalen der Ansprüche 1 oder 21.The object is achieved by a printing machine with the features of claims 1 or 21.

Indem eine Kühlwalze dieser Maschine drehzahlgeregelt angetrieben ist und die Regleranordnung eingerichtet ist, den Drehzahlsollwert für die Kühlwalze in einem veränderlichen Verhältnis zum Drehzahlsollwert für wenigstens eine andere angetriebene Walze vorzugeben, wird die Möglichkeit geschaffen, die Bahnspannungen vor und hinter der Kühlwalzenanordnung unabhängig voneinander einzustellen und so Spannungsschwankungen der Bahn auszugleichen, die sich z. B. aus schwankender Austrocknung in einer den Kühlwalzen vorgelagerten Trockeneinrichtung ergeben können.By having a chill roll of this machine driven in a speed-controlled manner and with the governor assembly configured to set the speed setpoint for the chill roll at a variable ratio to the speed setpoint for at least one other driven roll, the possibility is provided to independently set the web tension in front of and behind the chill roll assembly, and so on To compensate for voltage fluctuations of the web, z. B. from fluctuating dehydration in a cooling rolls upstream drying device can result.

Um ein Instabilwerden der Bahnspannung zu vermeiden, kann die Regleranordnung eine zentrale Steuereinheit zum Vorgeben einer allgemeinen Solldrehzahl für die angetriebenen Walzen und eine Korrektureinheit zum Erzeugen des Drehzahlsollwerts für die angetriebene Kühlwalze durch Überlagern der allgemeinen Solldrehzahl für die angetriebene Kühlwalze mit einem Korrekturterm umfassen, der von einer an einer dieser Kühlwalze benachbarten Messstelle gemessenen Bahnspannung abhängig ist. Indem der Korrekturterm klein im Vergleich zum allgemeinen Drehzahlsollwert gehalten ist, wird verhindert, dass kurzzeitige Ausschläge der Bahnspannung zu starken Regelreaktionen führen, die sich durch die gesamte Maschine fortpflanzen und aufschaukeln können.To avoid instability of the web tension, the governor assembly may include a central control unit for setting a general target speed for the driven rollers and a correction unit for generating the speed setpoint for the driven cooling roller by superimposing the general target speed for the driven cooling roller with a correction term derived from a measured at one of these cooling roller adjacent measuring point web tension is dependent. By keeping the correction term small compared to the general speed setpoint, short-term excursions of the web tension are prevented from leading to strong control reactions that can propagate and swell through the entire machine.

An einem Leitstand der Druckmaschine kann eine Anzeigeeinrichtung zum qualitativen oder quantitativen Anzeigen einer Abweichung zwischen dem Drehzahlsollwert und der allgemeinen Solldrehzahl vorgesehen werden, so dass eine Bedienungsperson erkennen kann, wann und gegebenenfalls in welchem Umfang Bahnspannungsschwankungen vorliegen.At a control station of the printing press, a display device for qualitatively or quantitatively displaying a deviation between the speed setpoint and the general target speed can be provided, so that an operator can recognize when and if so to what extent web tension fluctuations exist.

Die Messstelle, anhand von deren Messergebnissen die Kühlwalze drehzahlgeregelt wird, umfasst vorzugsweise wenigstens einen Kraftsensor, der eingerichtet ist, um eine auf die angetriebene Kühlwalze wirkende Lagerkraft zu erfassen. So wird eine eigene Messwalze für die Messstelle eingespart.The measuring point, on the basis of the measurement results of the cooling roller is speed-controlled, preferably comprises at least one force sensor which is adapted to detect a bearing force acting on the driven cooling roller bearing force. This saves a separate measuring roller for the measuring point.

Wenn die Eintreffrichtung der Bahn an der Kühlwalze oder die Abgangsrichtung der Bahn von der Kühlwalze horizontal ist, kann die Bahnspannung vor bzw. hinter der angetriebenen Walze durch einen in horizontaler Richtung empfindlichen Kraftsensor unabhängig vom Gewicht der Walze gemessen werden.When the direction of arrival of the web on the chill roll or the exit direction of the web from the chill roll is horizontal, the web tension in front of and behind the driven roll can be measured by a horizontally sensitive force sensor independent of the weight of the roll.

Wenn der wenigstens eine Kraftsensor für eine entgegen der Eintreffrichtung der Bahn an der Kühlwalze orientierte Kraft empfindlich ist, ist die Regleranordnung zweckmäßigerweise eingerichtet, den Drehzahlsollwert um so niedriger zu regeln, je stärker diese Kraft ist. Umgekehrt kann, wenn der Kraftsensor für eine in Abgangsrichtung der Bahn von der Kühlwalze orientierte Kraft empfindlich ist, die Regleranordnung den Drehzahlsollwert um so höher regeln, je stärker die Kraft ist.If the at least one force sensor is sensitive to a force oriented counter to the direction of arrival of the web on the chill roll, the controller arrangement is expediently arranged to regulate the speed setpoint the lower, the stronger this force is. Conversely, if the force sensor is sensitive to a force oriented in the outgoing direction of the web from the chill roll, the governor assembly can regulate the speed setpoint the higher the stronger the force.

Besonders zweckmäßig ist es, wenn die Messstelle zwei Kraftsensoren umfasst, die für in verschiedene Richtungen orientierte Kräfte empfindlich sind. Da die Walze angetrieben ist, kann die Bahnspannung vor und hinter der Walze jeweils unterschiedliche Werte annehmen. Mit Hilfe des Paares von Sensoren ist es möglich, die Bahnspannungen vor und hinter der Walze unabhängig voneinander zu messen. Die Walze kann daher nicht nur die Messwalze einer einzelnen herkömmlichen Messstelle, sondern gleich zwei solche Messwalzen ersetzen.It is particularly expedient if the measuring point comprises two force sensors which are sensitive to forces oriented in different directions. Since the roller is driven, the web tension in front of and behind the roller can each assume different values. With the help of the pair of sensors, it is possible to measure the web tension in front of and behind the roll independently of each other. The roller can therefore not only the measuring roller of a single conventional measuring point, but two such Replace measuring rollers.

Für eine getrennte Messung der Bahnspannungen vor und hinter der angetriebenen Walze sollte der Umschlingungswinkel der Materialbahn an der Walze von 180° verschieden sein und vorzugsweise in etwa 90° oder 270° betragen.For a separate measurement of the web tension in front of and behind the driven roller, the wrap angle of the web on the roller should be different from 180 ° and preferably about 90 ° or 270 °.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren.Further features and advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying figures.

Es zeigen:

Fig. 1
eine schematische Ansicht des Falzapparats einer Druckmaschine;
Fig. 2
das Lager einer Kühlwalze des Falzapparats;
Fig. 3
eine schematische Darstellung der Kräfteverteilung an der Kühlwalze; und
Fig. 4
ein Diagramm der Bahnspannungs- und Drehzahlregelung der Druckmaschine.
Show it:
Fig. 1
a schematic view of the folding apparatus of a printing press;
Fig. 2
the bearing of a chill roll of the folder;
Fig. 3
a schematic representation of the distribution of forces on the cooling roller; and
Fig. 4
a diagram of the web tension and speed control of the printing press.

Dem in Fig. 1 gezeigten Falzapparat sind in an sich bekannter Weise Druckeinheiten, in welchen eine Bahn 01, z. B. eine Materialbahn 01, beiderseits mehrfarbig bedruckt wird, und ein Trockner zum Trocknen der frisch bedruckten Bahn 01 vorgelagert. Den Eingang des Falzapparats bildet eine Anordnung 02, z. B. einen Kühlwalzenständer 02, mit einer Mehrzahl von Walzen 03; 04; z. B. Kühlwalzen 03; 04, von denen die am weitesten eingangsseitig gelegene Kühlwalze 03 durch einen (nicht dargestellten) Motor angetrieben ist. Auf dem Weg der Materialbahn 01 folgt auf die Kühlwalzenanordnung 02 eine Wiederbefeuchtungsanlage 06, in welcher der Materialbahn 01 eventuell im Übermaß entzogene Feuchtigkeit wieder zugeführt wird, um die Bahn 01 wellenfrei zu erhalten und leicht weiter verarbeiten zu können.The folding apparatus shown in Fig. 1 are in a conventional manner printing units in which a web 01, z. B. a web of material 01, both sides is printed multi-colored, and a dryer for drying the freshly printed web 01 upstream. The entrance of the folder forms an arrangement 02, z. B. a chill roll stand 02, with a plurality of rollers 03; 04; z. B. cooling rollers 03; 04, of which the cooling roller 03 located farthest on the input side is driven by a motor (not shown). On the way of the material web 01 follows on the cooling roller assembly 02 a Wiederbefeuchtungsanlage 06, in which the material web 01 may be supplied again in excess moisture withdrawn to the web 01 wave-free received and easy to continue processing.

Von der Wiederbefeuchtungsanlage 06 ist die Bahn 01 aufwärts zu einer weiteren Walze 07, z. B. einer Hauptzugwalze 07, die vorzugsweise ebenfalls über eine Messwalze vor der Hauptzugwalze 07 analog dem Kühlwalzenständer "bahnspannungsgeregelt" ist, geführt, an der auch ein Messer 08 zum Zerlegen der Bahn 01 in mehrere Teilbahnen angeordnet ist. Die Teilbahnen werden in einem Wendedeck 13 gewendet und übereinander gelegt und erreichen in übereinander gelegter Form eine weitere Walze 09, z. B. eine Trichterzugwalze 09 am Eingang eines Falztrichters 11. Die am Ausgang des Falztrichters 11 längsgefalzte Bahn 01 erreicht einen Querfalzapparat 12, in welchem die Bahn 01 in dem Fachmann vertrauter Weise in einzelne Signaturen zerschnitten und anschließend die Signaturen quer gefalzt und ausgelegt werden.From the rewet 06, the web 01 is up to another roller 07, z. B. a Hauptzugwalze 07, which is also preferably via a measuring roller in front of the main tension roller 07 analogous to the cooling roller stand "track voltage controlled" out, on which a knife 08 is arranged for disassembling the web 01 in a plurality of sub-webs. The partial webs are turned in a turning table 13 and placed one above the other and reach in superimposed form another roller 09, z. B. the Trichterzugwalze 09 at the entrance of a former 11. The longitudinally folded at the exit of the former 11 01 reaches a Querfalzapparat 12, in which the web 01 in the familiar manner cut into individual signatures and then the signatures are folded and designed transversely.

Die Drehzahlen, mit denen die Kühlwalze 03, die Hauptzugwalze 07 und die Trichterzugwalze 09 angetrieben werden, sind im wesentlichen vorgegeben durch die Geschwindigkeit, mit der die Bahn 01 die Druckeinheiten durchläuft. Die Befeuchtung der Bahn 01 während des Bedruckens, ihre Austrocknung im Trockner sowie gegebenenfalls die erneute Befeuchtung in der Wiederbefeuchtungsanlage 06 rufen Dehnungs- bzw. Schrumpfungsvorgänge der Bahn 01 hervor, die, wenn nicht gegengesteuert wird, Schwankungen der Bahnspannung hervorrufen und zu Störungen des Druckvorgangs führen können. Spannungssprünge können auf den Weg der Bahn 01 - von Reibungsverlusten abgesehen - im wesentlichen an angetriebenen Walzen 03; 07; 09 auftreten. Daher ist es an jedem Abschnitt der Materialbahn 01 zwischen zwei angetriebenen Walzen, in welchem sich die Eigenschaften der Bahn 01 ändern können, erforderlich, die Spannung messen zu können. Zur Spannungsmessung im Abschnitt zwischen der Kühlwalze 03 und der Hauptzugwalze 07 dient eine oberhalb der Wiederbefeuchtungsanlage 06 angeordnete Messwalze 16, die von der Bahn 01 auf etwas mehr als 90° umschlungen ist. Im Bahnabschnitt zwischen der Hauptzugwalze 07 und der Trichterzugwalze 09 ist vorzugsweise keine Vorrichtung zur Bahnspannungsmessung vorgesehen, da sich in diesem Abschnitt die Materialeigenschaften der Bahn 01 nicht ändern. Die Trichterzugwalze 09 folgt der Hauptzugwalze 07 vorzugsweise winkelsynchron. Da jedoch zwischen dem Ausgang der Druckeinheiten, die z. B. in einem Druckturm angeordnet sind, und dem Kühlwalzenständer 02 die Materialeigenschaften der Bahn 01 durch den Trockner verändert werden können, ist für diesen Abschnitt eine Spannungsmessvorrichtung vorgesehen. Um eine eigene Messwalze für diese Spannungsmessvorrichtung einzusparen, ist diese unmittelbar in die angetriebene Kühlwalze 03 integriert, indem Kraftsensoren 23; 24 in deren Lager eingebaut sind. Fig. 2 zeigt dies in einer Detailansicht.The speeds at which the cooling roller 03, the main tension roller 07 and the Trichterzugwalze 09 are driven, are essentially predetermined by the speed at which the web 01 passes through the printing units. The moistening of the web 01 during printing, its dehydration in the dryer and possibly the rewetting in the Wiederbefeuchtungsanlage 06 cause expansion or shrinkage operations of the web 01, which, if not counteracted, cause fluctuations in the web tension and cause disturbances of the printing process can. Stress jumps can on the way of the web 01 - apart from friction losses - substantially on driven rollers 03; 07; 09 occur. Therefore, at each section of the web 01 between two driven rollers, in which the properties of the web 01 may change, it is necessary to be able to measure the tension. To measure the tension in the section between the cooling roller 03 and the main tension roller 07, a measuring roller 16 arranged above the re-wetting plant 06 is used, which is looped around by the web 01 to a little more than 90 °. In the web section between the main tension roller 07 and the Trichterzugwalze 09 is preferably no device for Web tension measurement provided since the material properties of the web 01 do not change in this section. The Trichterzugwalze 09 follows the Hauptzugwalze 07 preferably angle synchronously. However, since between the output of the printing units z. B. are arranged in a printing tower, and the cooling roll stand 02, the material properties of the web 01 can be changed by the dryer, a voltage measuring device is provided for this section. To save its own measuring roll for this tension measuring device, this is directly integrated into the driven cooling roll 03 by force sensors 23; 24 are installed in their warehouse. Fig. 2 shows this in a detailed view.

Fig. 2 ist eine Draufsicht auf ein Stück einer Seitengestellplatte 17 des Kühlwalzenständers 02 mit einer Öffnung 18, durch die sich eine drehbare Achse 19 der Kühlwalze 03 erstreckt. Die im Schnitt gezeigte Achse 19 ist hohl, und ihr innerer Hohlraum dient zum Zu- und Abführen von Kühlwasser von der Walze 03. Die Achse 19 ist gehalten in einem Wälzlager 21, dessen äußerer Ring in der Öffnung 18 durch einen Keil 22 oder andere geeignete Mittel gegen zwei Piezoelemente 23 bzw. 24 gedrückt gehalten ist. Das Piezoelement 23 liegt auf Höhe der Drehachse 19 und ist empfindlich für horizontale Kräfte, während das unter der Achse 19 liegende Piezoelement 24 für vertikale Kräfte empfindlich ist.Fig. 2 is a plan view of a piece of a side frame plate 17 of the chill roll stand 02 having an opening 18 through which a rotatable shaft 19 of the chill roll 03 extends. The axis 19 shown in section is hollow, and its inner cavity serves for supplying and discharging cooling water from the roller 03. The axis 19 is held in a rolling bearing 21, the outer ring in the opening 18 by a wedge 22 or other suitable Means is pressed against two piezo elements 23 and 24, respectively. The piezoelectric element 23 is located at the height of the axis of rotation 19 and is sensitive to horizontal forces, while the piezoelectric element 24 located below the axis 19 is sensitive to vertical forces.

Fig. 3 veranschaulicht die Verteilung der von der Materialbahn 01 auf die Walze 03 ausgeübten Kräfte. In der Fig. ist mit 01 a ein Abschnitt der Materialbahn 01 bezeichnet, der von den Druckeinheiten kommend auf die Walze 03 zuläuft, und 01b ist ein Bahnabschnitt, der von der Kühlwalze 03 auf die nachfolgende Kühlwalze 04 zuläuft. Den Spannungen der Bahn 01 in diesen beiden Abschnitten 01a; 01b entsprechen jeweils zu den Abschnitten parallele Kraftvektoren Fa bzw. Fb. Die aus deren Überlagerung resultierende Kraft ist mit Fs bezeichnet. Das Piezoelement 23 erfasst die horizontale Komponente Fh von Fs und das Piezoelement 24 die vertikale Komponente Fv. Wenn die Orientierung der zwei Abschnitte 01 a, 01 b und damit die Richtung der in ihnen wirkenden Spannungskräfte bekannt ist, ist eine elektronische Steuereinheit, die Messsignale von der Piezoelementen 23; 24 empfängt, in der Lage, die Kräfte Fa und Fb und damit die Bahnspannung in beiden Abschnitten 01 a bzw. 01 b zu berechnen. Vorraussetzung hierfür ist lediglich, dass die Abschnitte 01 a, 01 b nicht parallel sind, und die Berechnung ist um so genauer möglich, je näher der Schnittwinkel zwischen den zwei Abschnitten 01 a und 01 b am rechten Winkel ist, d. h. je näher der Umschlingungswinkel der Bahn 01 an der Walze 03 an 90° oder 270° ist.Fig. 3 illustrates the distribution of the forces exerted by the web 01 on the roller 03 forces. In the figure, 01a designates a portion of the web of material 01 which approaches the roll 03 coming from the printing units, and 01b is a web section which tapers from the cooling roll 03 to the following cooling roll 04. The stresses of the web 01 in these two sections 01a; 01b correspond respectively to the sections parallel force vectors Fa or Fb. The force resulting from their superposition is denoted by Fs. The piezo element 23 detects the horizontal component Fh of Fs and the piezo element 24 detects the vertical component Fv. If the Orientation of the two sections 01 a, 01 b and thus the direction of the tension forces acting in them is known, is an electronic control unit, the measurement signals from the piezo elements 23; 24 receives, able to calculate the forces Fa and Fb and thus the web tension in both sections 01 a and 01 b. The prerequisite for this is merely that the sections 01 a, 01 b are not parallel, and the calculation is the more accurate, the closer the intersection angle between the two sections 01 a and 01 b at right angles, ie the closer the wrap angle Web 01 on the roll 03 at 90 ° or 270 °.

Der Allgemeinheit der Darstellung wegen sind in Fig. 3 die Kraftvektoren Fa, Fb, Fh, Fv mit unterschiedlichen Orientierungen gezeichnet, doch versteht sich, dass von Fa und Fb auch eine oder beide zu Fh bzw. Fv parallel sein können, was die Berechnung der Bahnspannungen an den gemessenen Kräften Fh, Fv vereinfacht.Because of the generality of the illustration, the force vectors Fa, Fb, Fh, Fv are drawn with different orientations in FIG. 3, but it is understood that one or both of Fa and Fb can also be parallel to Fh or Fv, which is the calculation of the Web stresses on the measured forces Fh, Fv simplified.

Bei dem in Fig. 1 gezeigten Aufbau ist es an sich ausreichend, lediglich die Spannung im Abschnitt 01 a zu berechnen, da die im Abschnitt 01 b bereits mit Hilfe der Messwalze 16 erfassbar ist.In the structure shown in Fig. 1, it is sufficient to calculate only the voltage in the section 01 a, since the already in section 01 b with the aid of the measuring roller 16 can be detected.

Fig. 4 zeigt schematisch den Aufbau einer Drehzahl- und Bahnspannungsregelung für die in Fig. 1 gezeigte Druckmaschine mit Falzapparat. Über eine virtuelle Leitachse 28 ist einem Regler 29 der Kühlwalze 03 und einem Regler 31 der Hauptzugwalze 07 eine allgemeine Solldrehzahl vorgegeben. Diese kann beispielsweise an einem Leitstand unmittelbar eingegeben sein, oder sie kann aus der Geschwindigkeit, mit der die Materialbahn 01 den dem Falzapparat vorgelagerten Druckturm durchläuft, abgeleitet sein. Die Drehzahlregler 29, 31 sind jeweils an einen Bahnspannungsregler 32 bzw. 33 angeschlossen, der anhand der von den Piezoelementen 23; 24 bzw. an der Messwalze 16 gemessenen Kräfte die Bahnspannung abschätzt und mit einem vorgegebenen Sollwert vergleicht, der am Leitstand über Bedienelemente 34 einstellbar ist. Anhand der Abweichung zwischen gemessener und vorgegebener Bahnspannung legen die Bahnspannungsregler 32; 33 jeweils einen Korrekturwert fest, der in den Drehzahlreglern 29 bzw. 31 der von der virtuellen Leitachse 28 spezifizierten allgemeinen Solldrehzahl überlagert wird, um eine angepasste Solldrehzahl für die Kühlwalze 03 bzw. die Hauptzugwalze 07 zu erhalten. Ein Drehzahlregler 36 der Trichterzugwalze 09 ist nicht unmittelbar an die virtuelle Leitachse 28 angeschlossen, sondern ist an die Hauptzugwalze 07 gekoppelt, um die Bahn 01 jederzeit mit der gleichen Geschwindigkeit wie letztere anzutreiben, vorzugsweise winkelsynchron. Auch den Drehzahlreglern 29; 31; 36 sind jeweils Bedienelemente 37 am Leitstand zugeordnet, über die Abweichungen von der allgemeinen Solldrehzahl individuell für die verschiedenen angetriebenen Walzen 03; 07; 09 von Hand einstellbar sind.Fig. 4 shows schematically the structure of a speed and web tension control for the printing press shown in Fig. 1 with folder. Via a virtual master shaft 28, a controller 29 of the cooling roller 03 and a controller 31 of the main roller 07 is given a general target speed. This can for example be input directly to a control station, or it can be derived from the speed at which the material web 01 passes through the printing press upstream of the folder. The speed controllers 29, 31 are each connected to a web tension controller 32 and 33, respectively, based on the piezoelectric elements 23; 24 or forces measured on the measuring roller 16 estimates the web tension and compares it with a predetermined desired value which can be set at the control station via operating elements 34. Based on the deviation between measured and given web tension put the Web tension controller 32; 33 each fixed a correction value which is superimposed in the speed controllers 29 and 31 of the specified by the virtual master shaft 28 general target speed to obtain an adjusted target speed for the cooling roller 03 and the main tension roller 07. A speed controller 36 of the Trichterzugwalze 09 is not directly connected to the virtual master shaft 28, but is coupled to the main tension roller 07 to drive the web 01 at any time at the same speed as the latter, preferably angle synchronously. Also the speed controllers 29; 31; 36 are each associated controls 37 on the control station, on the deviations from the general target speed individually for the different driven rollers 03; 07; 09 are adjustable by hand.

Wenn der Spannungsregler 32 eine zu niedrige (bzw. zu hohe) Bahnspannung im Abschnitt 01 a erfasst, steuert er den Drehzahlregler 29 an, um den Drehzahlsollwert für die Kühlwalze 03 herauf- (bzw. herunter-) zuregeln. Aus dieser Drehzahlanpassung resultiert eine Abnahme (Zunahme) der Bahnspannung im Abschnitt 01 b, die an der Messwalze 16 gemessen wird und auf diese Weise den Spannungsregler 33 veranlasst, den Drehzahlsollwert für die Hauptzugwalze 07 zu beeinflussen. Gleichzeitig mit einer Korrektur von deren Drehzahl wird über den Regler 36 auch eine Korrektur der Drehzahl der Trichterzugwalze 09 vorgenommen, so dass die Spannung der Bahn 01 in dem nicht gemessenen Abschnitt zwischen Hauptzugwalze 07 und Trichterzugwalze 09 nicht variiert.When the voltage regulator 32 detects too low (or too high) web tension in the section 01 a, it controls the speed controller 29 to up (or down) the speed setpoint for the chill roll 03. From this speed adjustment results in a decrease (increase) of the web tension in the section 01 b, which is measured on the measuring roller 16 and in this way causes the voltage regulator 33 to influence the speed setpoint for the main tension roller 07. Simultaneously with a correction of the rotational speed, a correction of the rotational speed of the Trichterzugwalze 09 is made via the controller 36, so that the tension of the web 01 in the non-measured section between the main tension roller 07 and Trichterzugwalze 09 does not vary.

Um zu verhindern, dass Eingriffe der Spannungsregler 32; 33 einander gegenseitig aufschaukeln, ist der Einfluss dieser Regler 32; 33 auf die von den Drehzahlreglern 29; 31 festgelegten Drehzahlsollwerte betragsmäßig begrenzt. Es kann auch vorgesehen werden, dass die Zeitkonstanten, mit denen geänderte Drehzahlsollwerte an Kühlwalze 03 und Hauptzugwalze 07 eingestellt werden, sich stark unterscheiden, um Resonanzeffekte zu vermeiden.To prevent interference from the voltage regulator 32; 33 rock each other, is the influence of these controller 32; 33 to the of the speed controllers 29; 31 fixed speed setpoint limits. It can also be provided that the time constants with which changed speed setpoints are set on cooling roller 03 and main roller 07 differ greatly in order to avoid resonance effects.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

0101
Bahn; MaterialbahnTrain; web
0202
Anordnung; Kühlwalzenanordnung; KühlwalzenständerArrangement; Cooling roller arrangement; Chill roller stand
0303
Walze; KühlwalzeRoller; chill roll
0404
Walze; KühlwalzeRoller; chill roll
0505
--
0606
Wiederbefeuchtungsanlageremoistening
0707
Walze; HauptzugwalzeRoller; Hauptzugwalze
0808
Messerknife
0909
Walze; TrichterzugwalzeRoller; Trichterzugwalze
1010
--
1111
Falztrichterformers
1212
QuerfalzapparatQuerfalzapparat
1313
Wendedeckturning deck
1414
--
1515
--
1616
Messstelle; MesswalzeMeasuring point; measuring roll
1717
SeitengestellplatteSide frame plate
1818
Öffnungopening
1919
Achse; DrehachseAxis; axis of rotation
2020
--
2121
Wälzlagerroller bearing
2222
Keilwedge
2323
Kraftsensor; PiezoelementForce sensor; piezo element
2424
Kraftsensor; PiezoelementForce sensor; piezo element
2525
--
2626
--
2727
--
2828
virtuelle Leitachsevirtual master axis
2929
Regler zu 03; Drehzahlregler; KorrektureinheitController to 03; Speed control; correction unit
3030
--
3131
Regler zu 07; Drehzahlregler; KorrektureinheitRegulator to 07; Speed control; correction unit
3232
Regler; Spannungsregler; Bahnspannungsreglerregulator; Voltage regulator; Web tension controllers
3333
Regler; Spannungsregler; Bahnspannungsreglerregulator; Voltage regulator; Web tension controllers
3434
Bedienelementoperating element
3535
--
3636
Regler; Drehzahlreglerregulator; Speed governor
3737
BedienteilelementPanel element
01a01a
Abschnitt der Materialbahn 01Section of the material web 01
01b01b
Abschnitt der Materialbahn 01Section of the material web 01
Fafa
Kraftvektorforce vector
FbFb
Kraftvektorforce vector
Fhfh
Kraftvektorforce vector
Fsfs
Kraftvektorforce vector
FvFv
Kraftvektorforce vector

Claims (23)

Druckmaschine mit wenigstens einer Druckeinheit, mindestens eine Kühlwalze (03) umfassenden Kühlwalzenanordnung (02), und einem Falzapparat, die eine Mehrzahl von Messstellen (03; 16) zum Messen der Spannung einer die Druckmaschine durchlaufenden Materialbahn (01) und eine Mehrzahl von angetriebenen Walzen (03; 07; 09) aufweist, und einer Regleranordnung (29, 31, 32, 33, 36), die an den Messstellen (03; 16) gemessene Werte der Bahnspannung empfängt und Drehzahlsollwerte für mehrere angetriebene Walzen (03; 07; 09) vorgibt, - wobei wenigstens eine der durch die Regleranordnung (29, 31, 32, 33, 36) drehzahlgeregelt angetriebenen Walzen (03; 07; 09) eine Kühlwalze (03) dieser Kühlwalzenanordnung (02) ist, - wobei die Regleranordnung (29, 31, 32, 33, 36) den Drehzahlsollwert für die Kühlwalze (03) in einem veränderlichen Verhältnis zum Drehzahlsollwert für wenigstens eine andere angetriebene Walze (07; 09) vorgebend angeordnet ist, - wobei eine Messstelle (03) der mindestens einen Kühlwalze (03) zugeordnet ist, - wobei die Messstelle (03) der Kühlwalze (03) die Spannung der die Kühlwalze (03) umschlingenden Materialbahn (01) erfassend angeordnet ist. Printing machine with at least one printing unit, at least one cooling roller arrangement (02) comprising a cooling roller (03), and a folding apparatus having a plurality of measuring points (03; 16) for measuring the tension of a material web (01) passing through the printing machine and a plurality of driven rollers (03; 07; 09) and a controller arrangement (29, 31, 32, 33, 36) which receives measured values of the web tension at the measuring points (03; 16) and speed setpoints for a plurality of driven rollers (03; 07; 09 ) pretend - wherein at least one of the controller arrangement (29, 31, 32, 33, 36) speed-controlled driven rollers (03, 07, 09) is a cooling roller (03) of this cooling roller assembly (02), - wherein the controller arrangement (29, 31, 32, 33, 36) the speed setpoint for the cooling roller (03) in a variable relationship to the speed setpoint for at least one other driven roller (07, 09) is predetermined, - wherein a measuring point (03) of the at least one cooling roller (03) is assigned, - Wherein the measuring point (03) of the cooling roller (03), the voltage of the cooling roller (03) wrapping around the material web (01) is arranged to detect. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Regleranordnung (29, 31, 32, 33, 36) eine zentrale Steuereinheit zum Vorgeben einer allgemeinen Solldrehzahl für die angetriebenen Walzen (03; 07; 09) und eine Korrektureinheit (29, 31) zum Erzeugen des Drehzahlsollwerts für die angetriebene Kühlwalze (03; 07) durch Überlagern der allgemeinen Solldrehzahl für die angetriebene Kühlwalze (03; 07) mit einem von einer an einer der Kühlwalze (03; 07) benachbarten Messstelle (03; 16) gemessenen Bahnspannung abhängigen Korrekturterm umfasst.Printing machine according to Claim 1, characterized in that the control arrangement (29, 31, 32, 33, 36) has a central control unit for specifying a general setpoint speed for the driven rollers (03, 07, 09) and a correction unit (29, 31) for Generating the speed setpoint for the driven cooling roller (03; 07) by superimposing the general setpoint speed for the driven cooling roller (03; 07) with a correction voltage measured from a measuring point (03; 16) adjacent to the cooling roller (03; includes. Druckmaschine nach Anspruch 2, dadurch gekennzeichnet, dass die Regleranordnung (29, 31, 32, 33, 36) den Drehzahlsollwert innerhalb eines Intervalls von vorgegebener Breite um die allgemeine Solldrehzahl herum regelt.Printing machine according to claim 2, characterized in that the controller arrangement (29, 31, 32, 33, 36) controls the speed setpoint within an interval of predetermined width around the general target speed around. Druckmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass eine Anzeigeeinrichtung zum Anzeigen einer Abweichung zwischen dem Drehzahlsollwert und der allgemeinen Solldrehzahl angeordnet ist.Printing machine according to claim 2 or 3, characterized in that a display device for indicating a deviation between the speed setpoint and the general target speed is arranged. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Messstelle (03) wenigstens einen Kraftsensor (23; 24) umfasst, der eine auf die angetriebene Kühlwalze (03) wirkende Lagerkraft erfassend angeordnet ist.Printing machine according to Claim 1, characterized in that the measuring point (03) comprises at least one force sensor (23; 24) which is arranged to detect a bearing force acting on the driven cooling roller (03). Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Messstelle (03) einen Sensor (23; 24) aufweist.Printing machine according to claim 1, characterized in that the measuring point (03) has a sensor (23, 24). Druckmaschine nach Anspruch 1, 2 oder 5, dadurch gekennzeichnet, dass die Messstelle (03) in der Kühlwalze (03) integriert ist.Printing machine according to claim 1, 2 or 5, characterized in that the measuring point (03) in the cooling roller (03) is integrated. Druckmaschine nach Anspruch 5, dadurch gekennzeichnet, dass die Eintreffrichtung der Bahn (01) an der Kühlwalze (03) oder die Abgangsrichtung der Bahn (01) von der Kühlwalze (03) horizontal ist.Printing machine according to claim 5, characterized in that the arrival direction of the web (01) on the cooling roller (03) or the outgoing direction of the web (01) of the cooling roller (03) is horizontal. Druckmaschine nach Anspruch 5 oder 8, dadurch gekennzeichnet, dass der wenigstens eine Kraftsensor (23; 24) für eine entgegen der Eintreffrichtung der Bahn (01) an der Kühlwalze (03) orientierte Kraft empfindlich ist und dass die Regleranordnung (29, 31, 32, 33, 36) den Drehzahlsollwert um so niedriger regelt, je stärker die Kraft ist.Printing machine according to Claim 5 or 8, characterized in that the at least one force sensor (23; 24) is sensitive to a force oriented counter to the direction of arrival of the web (01) on the cooling roll (03), and in that the regulator arrangement (29, 31, 32 , 33, 36) controls the speed setpoint the lower the stronger the force. Druckmaschine nach Anspruch 5 oder 8, dadurch gekennzeichnet, dass der wenigstens eine Kraftsensor (23; 24) für eine in Abgangsrichtung der Bahn (01) von der Kühlwalze (03) orientierte Kraft empfindlich ist und dass die Regleranordnung (29, 31, 32, 33, 36) den Drehzahlsollwert um so höher regelt, je stärker die Kraft ist.Printing machine according to claim 5 or 8, characterized in that the at least one force sensor (23; 24) is sensitive to a force oriented in the outgoing direction of the web (01) from the cooling roll (03) and that the regulator arrangement (29, 31, 32, 33, 36) regulates the speed setpoint the higher, depending stronger is the power. Druckmaschine nach Anspruch 1 oder 5, dadurch gekennzeichnet, dass die Messstelle (03) zwei Kraftsensoren (23; 24) umfasst, die für in verschiedene Richtungen orientierte Kräfte (Fv; Fh) empfindlich sind.Printing machine according to Claim 1 or 5, characterized in that the measuring point (03) comprises two force sensors (23; 24) which are sensitive to forces (Fv; Fh) oriented in different directions. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Umschlingungswinkel der Materialbahn (01) an der angetriebenen Kühlwalze (03) von 180° verschieden ist.Printing machine according to claim 1, characterized in that the wrap angle of the material web (01) on the driven cooling roller (03) is different from 180 °. Druckmaschine nach Anspruch 5, dadurch gekennzeichnet, dass mindestens ein Kraftsensor (23; 24) als Piezoelement (23; 24) ausgebildet ist.Printing machine according to claim 5, characterized in that at least one force sensor (23; 24) as a piezoelectric element (23; 24) is formed. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Drehzahlsollwert von der Druckeinheit vorgegeben ist.Printing machine according to claim 1, characterized in that the speed setpoint is predetermined by the printing unit. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass eine weitere Messstelle (16) angeordnet ist.Printing machine according to claim 1, characterized in that a further measuring point (16) is arranged. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass eine Hauptzugwalze (07) zwischen Kühlwalze (03) und Falztrichter (11) angeordnet ist.Printing machine according to claim 1, characterized in that a main tension roller (07) between the cooling roller (03) and the former (11) is arranged. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass eine Trichterzugwalze (09) als letzte vor dem Falztrichter (11) angeordnete Walze angeordnet ist.Printing machine according to claim 1, characterized in that a Trichterzugwalze (09) is arranged as the last before the former (11) arranged roller. Druckmaschine nach Anspruch 15 und 16, dadurch gekennzeichnet, dass die Hauptzugwalze (07) in Abhängigkeit von der weiteren Messstelle (16) geregelt ist.Printing machine according to claim 15 and 16, characterized in that the Main tension roller (07) is regulated in dependence on the other measuring point (16). Druckmaschine nach Anspruch 16 und 17, dadurch gekennzeichnet, dass die Trichterzugwalze (09) an die Hauptzugwalze (07) gekoppelt ist.Printing machine according to claim 16 and 17, characterized in that the Trichterzugwalze (09) to the Hauptzugwalze (07) is coupled. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Umfangsgeschwindigkeit der Trichterzugwalze (09) und der Hauptzugwalze (07) gleich ist.Printing machine according to claim 1, characterized in that the peripheral speed of the Trichterzugwalze (09) and the Hauptzugwalze (07) is the same. Verfahren zum Regeln einer Bahnspannung in einer Druckmaschine mit einer Hauptzugwalze (07) und mindestens einer Kühlwalze (03), wobei der Hauptzugwalze (07) und der Kühlwalze (03) ein Sollwert vorgegeben wird, - wobei die mindestens eine Kühlwalze (03) in Abhängigkeit einer ersten Messstelle (23; 24) geregelt wird, - wobei die Hauptzugwalze (07) in Abhängigkeit einer zweiten Messstelle (16) geregelt wird, - wobei die erste Messstelle (23; 24) die Bahnspannung der die Kühlwalze (03) umschlingenden Materialbahn erfasst. Method for regulating a web tension in a printing press with a main tension roller (07) and at least one cooling roller (03), wherein a main value is specified for the main tension roller (07) and the cooling roller (03), wherein the at least one cooling roller (03) is regulated as a function of a first measuring point (23; 24), - Wherein the main tension roller (07) is regulated as a function of a second measuring point (16), - Wherein the first measuring point (23, 24) detects the web tension of the cooling roller (03) wrapped around the material web. Verfahren nach Anspruch 21, dadurch gekennzeichnet, dass die erste Messstelle die auf die Kühlwalze wirkende Kraft der Materialbahn erfasst.A method according to claim 21, characterized in that the first measuring point detects the force acting on the cooling roller force of the material web. Verfahren nach Anspruch 21, dadurch gekennzeichnet, dass die erste Messstelle die Lagerkraft der Kühlwalze erfasst.A method according to claim 21, characterized in that the first measuring point detects the bearing force of the cooling roller.
EP06125386A 2006-02-25 2006-12-05 Printing press with web tension control Not-in-force EP1826002B1 (en)

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DE102006008835A DE102006008835B4 (en) 2006-02-25 2006-02-25 Printing machine with web tension control

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EP1826002A2 true EP1826002A2 (en) 2007-08-29
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WO2010054910A2 (en) 2008-11-14 2010-05-20 Koenig & Bauer Aktiengesellschaft Printing press, and method for handling a web guided through the printing press
WO2013087249A1 (en) * 2011-12-16 2013-06-20 Koenig & Bauer Aktiengesellschaft Web-fed printing press
CN110064573A (en) * 2019-04-15 2019-07-30 泉州宾拼贸易有限公司 A kind of semi-automatic dress wrapping machine

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EP1136258A2 (en) * 2000-03-23 2001-09-26 MAN Roland Druckmaschinen AG Method for operating a rotary printing machine with folding apparatus
EP1136257A2 (en) * 2000-03-24 2001-09-26 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for controlling web tension
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WO2010054910A2 (en) 2008-11-14 2010-05-20 Koenig & Bauer Aktiengesellschaft Printing press, and method for handling a web guided through the printing press
WO2010054910A3 (en) * 2008-11-14 2010-07-22 Koenig & Bauer Aktiengesellschaft Web-fed rotary press through which the web runs vertically, is dried and spread
US8256345B2 (en) 2008-11-14 2012-09-04 Koenig & Bauer Aktiengesellschaft Printing press, methods for using the printing press, and methods for handling a web guided through a printing press
CN102216081B (en) * 2008-11-14 2013-11-13 柯尼格及包尔公开股份有限公司 Printing press, and method for handling a web guided through the printing press
WO2013087249A1 (en) * 2011-12-16 2013-06-20 Koenig & Bauer Aktiengesellschaft Web-fed printing press
CN110064573A (en) * 2019-04-15 2019-07-30 泉州宾拼贸易有限公司 A kind of semi-automatic dress wrapping machine

Also Published As

Publication number Publication date
EP1826002B1 (en) 2010-03-10
DE102006008835A1 (en) 2007-08-30
ATE460278T1 (en) 2010-03-15
DE502006006389D1 (en) 2010-04-22
EP1826002A3 (en) 2009-02-25
DE102006008835B4 (en) 2008-08-21

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