EP0384385B1 - Device for altering the position of a web to be printed on - Google Patents

Device for altering the position of a web to be printed on Download PDF

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Publication number
EP0384385B1
EP0384385B1 EP90103220A EP90103220A EP0384385B1 EP 0384385 B1 EP0384385 B1 EP 0384385B1 EP 90103220 A EP90103220 A EP 90103220A EP 90103220 A EP90103220 A EP 90103220A EP 0384385 B1 EP0384385 B1 EP 0384385B1
Authority
EP
European Patent Office
Prior art keywords
web
printing
displacement elements
printing unit
printed
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
EP90103220A
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German (de)
French (fr)
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EP0384385A2 (en
EP0384385A3 (en
Inventor
Gunnar Rau
Wolfgang Glunz
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 EP0384385A2 publication Critical patent/EP0384385A2/en
Publication of EP0384385A3 publication Critical patent/EP0384385A3/en
Application granted granted Critical
Publication of EP0384385B1 publication Critical patent/EP0384385B1/en
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    • 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

Definitions

  • the invention relates to a device for changing the web position of a printing substrate web in a web-fed rotary printing press according to the preamble of claim 1.
  • a generic device which is used to change the web position of a printing material web on a printing unit of a newspaper printing press with a vertical web feed so that the areas of the machine which are normally covered by the web for maintenance work become accessible.
  • the printing material web is guided in a permanently S-shaped manner, independently of the position of the work platform and the operating state, around two deflection rollers which are arranged below a vertically movable work platform and can be moved with it.
  • the known work platform can be moved even during operation without changing the track length.
  • the platform is in the raised position, access to the lower cylinders of the printing unit is possible; a lowered position gives access to the upper cylinders.
  • the known arrangement cannot be used for a web-fed rotary printing press in a row design with a horizontal web contact-free between the printing units, since the height difference described above is missing as an essential prerequisite for moving the platform without changing the web length.
  • the S-shaped web guide there, referred to as a loop, around the deflecting rollers would, in the case of an arrangement between two printing units, of a roller-type printing press built in series also certainly lead to smearing of the fresh printing ink.
  • the invention has for its object to provide a device for changing the web position, which allows easy access to all cylinders for retrofitting despite the printing material web in the machine, even in web-fed rotary printing presses in series.
  • the feed mechanism 3 further comprises a driven pull roller 4 and a pressure roller 5.
  • the printing material web 1 wraps around the pull roller 4 over part of its circumference. It is additionally pressed against the pressure roller 5 in order to be able to introduce the force required for the web drive.
  • 4 further deflection rollers 2 follow, the last of which is designated 2 a.
  • horizontally rigid booms 6 are arranged at the top of the last deflecting roller 2 a, at the outer end of which a further deflecting roller 7 is mounted.
  • pivot levers 8 are rotatably mounted on the side walls of the feed mechanism, which carry a pivot guide roller 9 at its outer end.
  • the pivot levers 8 are shown in FIG. 1 in their lower end position, in which they are secured by a locking lever 10 which is also rotatably mounted on the side wall of the feed mechanism 3.
  • the pivoting levers 8 can be pivoted by an approximately not shown, preferably pneumatic pivoting device after pivoting away the locking lever 10 by approximately 150 ° into an upper end position (see also FIG. 3).
  • the printing material web 1 is guided in this area during operation of the printing machine coming down from the last deflection roller 2 a, wraps around the swivel guide roller 9 from below and is then guided upwards again over the deflection roller 7.
  • the swivel guide roller 9 forms a loop between the deflection rollers 2 a and 7 during operation and thus serves in conjunction with this as a web storage element.
  • the printing material web 1 is continued from the deflection roller 7 in such a way that it runs essentially horizontally onto the inlet nip between two blanket cylinders 12 and 13 of a first printing unit 14.
  • a deflection roller 11 which is also firmly mounted on the side walls of the feed mechanism 3 and is located approximately at the level of the inlet gap and by means of which the printing material web 1 overcomes the height difference from the deflection roller 7 to the inlet gap, is necessary below the deflection roller 7.
  • the height difference in the exemplary embodiment according to FIG. 1 essentially results from the fact that two printing material webs are processed in the entire printing press.
  • the feed mechanism 3 described above stands on a similar arrangement 3 ', by means of which a further printing substrate web designated 1' in the low position can be fed to a printing unit located further back. Since this part is unimportant for the description of the invention, the rollers and rollers which are involved in the guidance of the second printing material web 1 'and are arranged analogously to the upper feed mechanism 3 are not designated in any more detail.
  • the first printing unit 14 comprises two printing units arranged essentially vertically one above the other.
  • the lower printing unit is formed by the blanket cylinder 12, a plate cylinder 15 which can be adjusted thereon, and an inking and dampening unit, not shown.
  • the upper printing unit is formed by the blanket cylinder 13, a plate cylinder 16 which can be adjusted thereon, and an inking and dampening unit, not shown.
  • the printing material web 1 after passing through the printing nip between the blanket cylinders 12, 13, runs contact-free and essentially horizontally to an adjacent printing unit 17.
  • This comprises two printing units arranged essentially vertically one above the other, of which the lower one consists of a blanket cylinder 18, a plate cylinder 19 and an inking and dampening unit, not shown, and of which the upper printing unit is formed by a blanket cylinder 20, a plate cylinder 21 and an inking and dampening unit, not shown.
  • a vertical guide 22 is provided in the free space between the printing units 14 and 17 at least at the level of a side wall.
  • the guide 22 is arranged in an advantageous embodiment only on the drive side of the printing press, so that the space between the printing units 14, 17 remains freely accessible from the operating side.
  • Two path displacement elements 23, 26 can be moved along this guide 22, which are connected to one another in an advantageous embodiment and can thus be moved together.
  • the web displacement elements 23 and 26 extend essentially parallel to the longitudinal direction of the printing material web 1. In the exemplary embodiment shown, they are formed by flat sheets which are rounded at their ends by edging. Other shapes, such as semicircular curved sheets or two bars or rollers extending transversely to the printing material web are also possible.
  • the web displacement elements 23, 26 are arranged one above the other and are at a vertical distance from one another.
  • the web displacement elements 23, 26th connects with an equally heavy counterweight 25 on the other side of the guide 22, which is movable in opposite directions.
  • the web displacement elements can also be moved in a more complex manner by means of a crank and toothed rack, by means of an electric motor, pneumatically or hydraulically.
  • the web displacement elements 23, 26 are in a middle position. In this, the printing material web 1 is passed horizontally without contact between the underside of the upper web displacement element 23 and the top of the lower web displacement element 26. In Fig. 1 there are two more in addition to this drawn position Positions of the web displacement elements 23, 26 shown in dashed lines.
  • the upper web displacement element 23 In a lower position, designated 23 a, the upper web displacement element 23 is supported with its underside at least on the operating side of the printing press and can therefore be walked on.
  • the printing material web 1 runs underneath the upper web displacement element 23, which can thus be entered without hindrance when the machine is switched off for carrying out conversion or maintenance work on the upper printing units of the printing units 14, 17.
  • the printing material web 1 lies on the lower web displacement element 26.
  • the space between the printing units 14 and 17 can be entered unhindered for conversion and maintenance work on the lower printing units thereof.
  • the second printing unit 17 is further followed by an arrangement consisting of a guide 122 and an upper web taper element 123 and a lower web displacement element 126, the structure of which is identical to the arrangement formed from the parts 22, 23, 26.
  • the web displacement elements 123, 126 preferably connected to one another and thus jointly — can be moved along the guide 122 into a drawn central position, a lower position 123 a and an upper position 123 b. In the lower position 123 a, the upper web displacement element 123 can be walked on. Maintenance and retrofitting work on the second printing unit 17 is thus also possible from the rear.
  • a prerequisite for a change in the web position of the printing material web 1 from the middle operating position when the machine is switched off is the release of a web length required for the method by an upstream web storage element, which in the exemplary embodiment according to FIG. 1 is formed by the swivel guide roller 9 and the adjacent deflecting rollers 2 a and 6 .
  • the following measures are for this required: placing the blanket cylinders 12 and 13 apart from one another, pivoting the locking lever 10 away, pivoting the pivot lever 8 upward, thereby releasing the web loop formed by the pivot guide roller 9.
  • the pressure roller 5 can be switched off from the pull roller 4 and the pull roller 4 can be uncoupled from its drive.
  • FIGS. 2 to 5 show an impression unit when used as a normal printing unit for perfecting.
  • a printing material web 31 is guided in a feed mechanism 33 over a plurality of deflection rollers 32, the last of which is designated 32 a.
  • the feed mechanism 33 further comprises, analogous to the first exemplary embodiment, a pull roller and a pressure roller, which, however, are not shown in FIG. 2 due to the selected image detail.
  • a horizontal arm 36 is attached approximately at the level of the deflection roller 32 a, at the end of which a further deflection roller 37 is mounted.
  • pivot levers 38 are rotatably mounted on the side walls of the feed mechanism 33 and carry a pivot guide roller 39 at their outer end.
  • the pivot levers 38 are shown in FIG. 2 in their lower end position, in which they are secured by a locking lever 40 which is also rotatably mounted on the side wall of the feed mechanism 33.
  • the swivel levers 38 can be swiveled by approximately 150 ° into an upper end position by a preferably pneumatic swivel device, not shown, after swiveling the locking lever 40 away (see also FIGS. 3 to 5).
  • the printing material web 31 is guided downward in this area during operation of the printing machine from the last deflecting roller 32a, wraps around the swivel guide roller 39 from below and is then guided upward again via the deflecting roller 37.
  • the swivel lever roller 39 forms in operation between the deflection rollers 32 a and 37 a loop and thus serves in connection with this as a web storage element.
  • the printing material web 31 is continued so that it runs horizontally onto the inlet gap between two blanket cylinders 42 and 43 of a printing unit 44 designed as an impression unit.
  • the printing unit 44 comprises two printing units arranged essentially vertically one above the other, the blanket cylinders 42, 43 of which can be adjusted to a common impression cylinder 41 arranged laterally thereto.
  • the lower printing unit is formed by the blanket cylinder 42, a plate cylinder 45 that can be set on it, and an inking and dampening unit (not described in more detail).
  • the upper printing unit is formed by the blanket cylinder 43, a plate cylinder 46 which can be adjusted thereon, and an inking and dampening unit (not described in more detail).
  • the printing material web 31 runs after passing the printing gap between the blanket cylinders 42, 43 via the impression cylinder 41 used only as a paper guide roller in this type of printing and from there without contact and essentially horizontally to a subsequent printing unit, not shown.
  • a vertical guide 52 is provided in the free space between the feed mechanism 33 and the first printing unit 44, at least at the level of a side wall.
  • the guide 52 is arranged in an advantageous embodiment - as already described in the first embodiment and shown in Fig. 6 - only on the drive side of the printing press, so that the space between the feed mechanism 33 and the first printing unit 44 remains freely accessible from the operating side.
  • Two path displacement elements 53, 56 can be moved along the guide 52, for which their arrangement and design are analogous what has already been said above regarding the web displacement elements 23, 26 of the first exemplary embodiment applies.
  • the inlet gap between the blanket cylinders 42, 43 is protected by an upper and a lower protective screen 57 and 58, both of which are brought close to the printing material web 31.
  • the printing material web 31 is guided contact-free between the upper web displacement element 53 and the lower web displacement element 56 when the printing unit 44 is used in face and back printing, both of which are locked in a middle position on the guide 52. If, for example, a printing plate on the plate cylinder 45 of the lower printing unit is now to be changed, the printing material web 31 can be shifted in the following manner and access can thereby be made free.
  • the locking lever 40 is raised.
  • the pivot levers 38 are then pivoted into their upper position.
  • the swivel guide roller 39 releases the loop of the printing material web 31 previously held taut during operation.
  • the printing material web 31 is now without tension and lies on the lower web displacement element 56.
  • both web displacement elements 53 and 56 have been moved along the guide 52 into an upper position and locked there.
  • the printing material web 31 is carried along by the lower web displacement element 56, the web length previously stored in the loop tightened by the swivel guide roller 39 being used when the web is raised.
  • the lower protective screen 58 is additionally pivoted upwards.
  • the two web displacement elements 53 and 56 - starting from the position shown in FIG. 3, are more relaxed Printing material web 31 - move into a lower position and engage there.
  • the upper web displacement element 53 is supported at least on the operating side by means of support elements 59 attached to its underside on a longitudinal spar of the printing press or directly on its foundation. As a result, the top of the web displacement element 53 is accessible. Since the printing material web runs underneath it and at the same time the upper protective screen 57 has been pivoted downwards, access to the upper printing unit is possible without hindrance.
  • the printing unit 44 already known from FIGS. 2 to 5 is used as an impression mechanism for flying plate changes.
  • a printing material web 31 'coming from the feed mechanism 33 is guided downwards from the last deflection roller 32a; it is guided around under the pivot guide roller 39 when the pivot lever 38 is in the lower position. It is then passed without contact between the two web displacement elements 53, 56 located in the lowered position and under the printing unit 44 to the other side thereof.
  • the back up there printing substrate web 31 ' is guided around the impression cylinder 41 so that it can be printed alternately in one color or at the same time in two colors from the blanket cylinders 42 and 43 of the lower and upper printing units.
  • the swivel guide roller 39 as a paper guide roller and Web guidance below the web displacement element 56, which is located in the lower position and can thus be walked on, in this operating mode, free access to both printing units for conversion or maintenance work - in particular a plate change - is possible at any time.
  • a web storage element not only the arrangement described above of swivel guide roller and adjacent deflection rollers is suitable, but in principle any device in which a certain web length is stored, which is partially released by moving the guide elements used towards one another.
  • An example is the well-known web storage system used between the reel changer and the feed mechanism to keep the web speed constant when changing reels (see Oskar Frei, reel offset, Frankfurt am Main 1979, page 35).
  • the web displacement elements are moved when the cylinders holding the print image are parked.
  • the main drive on the other hand, can also be in an acceleration or deceleration phase.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Replacement Of Web Rolls (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Veränderung der Bahnlage einer Bedruckstoffbahn in einer Rollenrotations- Druckmaschine gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for changing the web position of a printing substrate web in a web-fed rotary printing press according to the preamble of claim 1.

Aus der DE-OS 27 41 596 ist eine gattungsgemäße Vorrichtung bekannt, die dazu dient, an einer Druckeinheit einer Zeitungsdruckmaschine mit vertikaler Bahnzuführung die Bahnlage einer Bedruckstoffbahn so zu verändern, daß die Bereiche der Maschine, die normalerweise von der Bahn verdeckt werden, für Wartungsarbeiten zugänglich werden. Hierzu ist die Bedruckstoffbahn unabhängig von der Position der Arbeitsplattform und vom Betriebszustand permanent S-förmig um zwei unterhalb einer vertikal verfahrbaren Arbeitsplattform angeordnete, mit dieser verfahrbare Umlenkwalzen geführt. Innerhalb einer Höhendifferenz, die von der Oberkante eines Zwischenbodens, durch den hindurch die Bahn zur ersten Umlenkwalze an der Arbeitsplattform zugeführt wird, und von einer der Druckeinheit ortsfest vorgelagerten weiteren Umlenkwalze bestimmt wird, zu der die Bahn nach Ablaufen von der zweiten Umlenkwalze an der Arbeitsplattform gelangt, ist die bekannte Arbeitsplattform ohne eine Veränderung der Bahnlänge sogar während des Betriebes verfahrbar. In angehobener Position der Plattform ist der Zugang zu den unteren Zylindern der Druckeinheit möglich; eine abgesenkte Position ermöglicht den Zugang zu den oberen Zylindern.From DE-OS 27 41 596 a generic device is known which is used to change the web position of a printing material web on a printing unit of a newspaper printing press with a vertical web feed so that the areas of the machine which are normally covered by the web for maintenance work become accessible. For this purpose, the printing material web is guided in a permanently S-shaped manner, independently of the position of the work platform and the operating state, around two deflection rollers which are arranged below a vertically movable work platform and can be moved with it. Within a height difference, which is determined from the upper edge of an intermediate floor, through which the web is fed to the first deflection roller on the work platform, and from a further deflection roller upstream of the printing unit, to which the web after the second deflection roller has run off on the work platform arrives, the known work platform can be moved even during operation without changing the track length. When the platform is in the raised position, access to the lower cylinders of the printing unit is possible; a lowered position gives access to the upper cylinders.

Für eine Rollenrotations- Druckmaschine in Reihenbauweise mit einer horizontalen, zwischen den Druckeinheiten berührungslosen Bahnführung ist die bekannte Anordnung nicht verwendbar, da die vorstehend beschriebene Höhendifferenz als unabdingbare Voraussetzung für ein Verfahren der Plattform ohne Veränderung der Bahnlänge hier fehlt. Die dort als Schlaufe bezeichnete S-förmige Bahnführung um die Umlenkwalzen würde bei einer Anordnung zwischen zwei Druckeinheiten einer in Reihenbauweise gebauten Rollenroations-Druckmaschine auch mit Sicherheit zum Abschmieren der frischen Druckfarbe führen.The known arrangement cannot be used for a web-fed rotary printing press in a row design with a horizontal web contact-free between the printing units, since the height difference described above is missing as an essential prerequisite for moving the platform without changing the web length. The S-shaped web guide there, referred to as a loop, around the deflecting rollers would, in the case of an arrangement between two printing units, of a roller-type printing press built in series also certainly lead to smearing of the fresh printing ink.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Veränderung der Bahnlage zu schaffen, die trotz in der Maschine befindlicher Bedruckstoffbahn auch bei Rollenrotations-Druckmaschinen in Reihenbauweise einen leichten Zugang zu allen Zylindern für Umrüstarbeiten ermöglicht.The invention has for its object to provide a device for changing the web position, which allows easy access to all cylinders for retrofitting despite the printing material web in the machine, even in web-fed rotary printing presses in series.

Diese Aufgabe wird durch die kennzeichnenden Merkmale im Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen enthalten.This object is achieved by the characterizing features in claim 1. Advantageous embodiments of the invention are contained in the subclaims.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung für zwei verschiedene Arten von Druckeinheiten anhand der Zeichnungen erläutert. Es zeigt

Fig. 1
ein Einzugswerk und zwei Druckeinheiten für Schön- und Widerdruck einer Rollenrotations- Druckmaschine in Reihenbauweise mit einer erfindungsgemäßen Vorrichtung zur Veränderung der Bahnlage,
Fig. 2
einen Teil eines Einzugswerkes und eine im Schön- und Widerdruck arbeitende Eindruckeinheit mit einer erfindungsgemäßen Vorrichtung zur Veränderung der Bahnlage,
Fig. 3
die Anordnung nach Fig. 2 bei eingeklappter Schwenkleitwalze,
Fig. 4
die Anordnung nach Fig. 3 bei nach oben gefahrenen Bahnverdrängungselementen,
Fig. 5
die Anordnung nach Fig. 3 bei nach unten gefahrenen Bahnverdrängungselementen,
Fig. 6
eine Vorderansicht der Bahnverdrängungselemente und der Führung,
Fig. 7
eine Bahnführungsanordnung bei Verwendung der Eindruckeinheit zur Erstellung wechselnder Eindrucke oder zweifarbigen Schöndrucks.
An exemplary embodiment of the invention for two different types of printing units is explained below with reference to the drawings. It shows
Fig. 1
a feed unit and two printing units for face and back printing of a web-fed rotary printing press in series with an inventive device for changing the web position,
Fig. 2
a part of an infeed unit and an impression unit working in face and back printing with a device according to the invention for changing the web position,
Fig. 3
2 with the swivel guide roller folded in,
Fig. 4
3 with the web displacement elements moved upwards,
Fig. 5
3 with the web displacement elements moved downwards,
Fig. 6
a front view of the web displacement elements and the guide,
Fig. 7
a web guide arrangement when using the impression unit to create changing impressions or two-color face printing.

In Fig. 1 wird eine von einem nicht dargestellten Rollenwechsler kommende Bedruckstoffbahn 1 über mehrere Umlenkrollen 2 eines Einzugswerkes 3 geführt. Das Einzugswerk 3 umfaßt ferner eine angetriebene Zugwalze 4 und eine Anpreßwalze 5. Die Bedruckstoffbahn 1 umschlingt die Zugwalze 4 auf einem Teil ihres Umfangs. Sie wird zusätzlich von der Anpreßwalze 5 an diese angedrückt, um die für den Bahnantrieb erforderliche Kraft einleiten zu können. In Laufrichtung der Bedruckstoffbahn 1 folgen auf die Zugwalze 4 weitere Umlenkrollen 2, von denen die letzte mit 2 a bezeichnet ist. An den Seitenwänden des Einzugswerks 3 sind oben auf Höhe der letzten Umlenkrolle 2 a horizontal starre Ausleger 6 angeordnet, an deren äußerem Ende eine weitere Umlenkrolle 7 gelagert ist.In Fig. 1, a printing material web 1 coming from a roll changer, not shown, is guided over several deflecting rollers 2 of a feed mechanism 3. The feed mechanism 3 further comprises a driven pull roller 4 and a pressure roller 5. The printing material web 1 wraps around the pull roller 4 over part of its circumference. It is additionally pressed against the pressure roller 5 in order to be able to introduce the force required for the web drive. In the running direction of the printing material web 1, 4 further deflection rollers 2 follow, the last of which is designated 2 a. On the side walls of the feed mechanism 3, horizontally rigid booms 6 are arranged at the top of the last deflecting roller 2 a, at the outer end of which a further deflecting roller 7 is mounted.

Unterhalb der Ausleger 6 sind an den Seitenwänden des Einzugswerks 3 Schwenkhebel 8 drehbar gelagert, die an ihrem äußeren Ende eine Schwenkleitwalze 9 tragen. Die Schwenkhebel 8 sind in Fig. 1 in ihrer unteren Endlage dargestellt, in der sie durch einen ebenfalls drehbar an der Seitenwand des Einzugswerks 3 gelagerten Arretierhebel 10 gesichert werden. Die Schwenkhebel 8 sind durch eine nicht dargestellte, vorzugsweise pneumatische Schwenkvorrichtung nach Wegschwenken des Arretierhebels 10 um etwa 150° in eine obere Endlage verschwenkbar (siehe auch Fig. 3).Below the boom 6 3 pivot levers 8 are rotatably mounted on the side walls of the feed mechanism, which carry a pivot guide roller 9 at its outer end. The pivot levers 8 are shown in FIG. 1 in their lower end position, in which they are secured by a locking lever 10 which is also rotatably mounted on the side wall of the feed mechanism 3. The pivoting levers 8 can be pivoted by an approximately not shown, preferably pneumatic pivoting device after pivoting away the locking lever 10 by approximately 150 ° into an upper end position (see also FIG. 3).

Die Bedruckstoffbahn 1 wird in diesem Bereich im Betrieb der Druckmaschine von der letzten Umlenkrolle 2 a kommend nach unten geführt, umschlingt die Schwenkleitwalze 9 von unten her und wird anschließend wieder nach oben über die Umlenkrolle 7 geführt. Die Schwenkleitwalze 9 formt im Betrieb zwischen den Umlenkrollen 2 a und 7 eine Schlinge und dient somit in Verbindung mit diesen als Bahnspeicherelement.The printing material web 1 is guided in this area during operation of the printing machine coming down from the last deflection roller 2 a, wraps around the swivel guide roller 9 from below and is then guided upwards again over the deflection roller 7. The swivel guide roller 9 forms a loop between the deflection rollers 2 a and 7 during operation and thus serves in conjunction with this as a web storage element.

Von der Umlenkrolle 7 wird die Bedruckstoffbahn 1 so weitergeführt, daß sie im wesentlichen horizontal auf den Einlaufspalt zwischen zwei Gummituchzylindern 12 und 13 einer ersten Druckeinheit 14 zuläuft. Im Beispiel nach Fig. 1 ist dazu unterhalb der Umlenkrolle 7 eine ebenfalls fest an den Seitenwänden des Einzugswerks 3 gelagerte Umlenkrolle 11 notwendig, die sich etwa auf Höhe des Einlaufspaltes befindet und mittels der die Bedruckstoffbahn 1 die Höhendifferenz von der Umlenkrolle 7 zum Einlaufspalt überwindet. Die Höhendifferenz ergibt sich beim Ausführungsbeispiel nach Fig. 1 maßgeblich daraus, daß in der gesamten Druckmaschine zwei Bedruckstoffbahnen verarbeitet werden. Das vorstehend beschriebene Einzugswerk 3 steht auf einer gleichartigen Anordnung 3′, mittels der eine mit 1′ bezeichnete weitere Bedruckstoffbahn in Tieflage einer weiter hinten liegenden Druckeinheit zugeführt werden kann. Da dieser Teil für die Beschreibung der Erfindung unwichtig ist, sind die an der Führung der zweiten Bedruckstoffbahn 1′ beteiligten, zum oberen Einzugswerk 3 analog angeordneten Walzen und Rollen nicht näher bezeichnet.The printing material web 1 is continued from the deflection roller 7 in such a way that it runs essentially horizontally onto the inlet nip between two blanket cylinders 12 and 13 of a first printing unit 14. In the example according to FIG. 1, a deflection roller 11, which is also firmly mounted on the side walls of the feed mechanism 3 and is located approximately at the level of the inlet gap and by means of which the printing material web 1 overcomes the height difference from the deflection roller 7 to the inlet gap, is necessary below the deflection roller 7. The height difference in the exemplary embodiment according to FIG. 1 essentially results from the fact that two printing material webs are processed in the entire printing press. The feed mechanism 3 described above stands on a similar arrangement 3 ', by means of which a further printing substrate web designated 1' in the low position can be fed to a printing unit located further back. Since this part is unimportant for the description of the invention, the rollers and rollers which are involved in the guidance of the second printing material web 1 'and are arranged analogously to the upper feed mechanism 3 are not designated in any more detail.

Die erste Druckeinheit 14 umfaßt zwei im wesentlichen vertikal übereinander angeordnete Druckwerke. Das untere Druckwerk wird vom Gummituchzylinder 12, einem an diesen anstellbaren Plattenzylinder 15 sowie einem nicht dargestellten Farb- und Feuchtwerk gebildet. Das obere Druckwerk wird vom Gummituchzylinder 13, einem an diesen anstellbaren Plattenzylinder 16 sowie einem nicht dargestellten Farb- und Feuchtwerk gebildet.The first printing unit 14 comprises two printing units arranged essentially vertically one above the other. The lower printing unit is formed by the blanket cylinder 12, a plate cylinder 15 which can be adjusted thereon, and an inking and dampening unit, not shown. The upper printing unit is formed by the blanket cylinder 13, a plate cylinder 16 which can be adjusted thereon, and an inking and dampening unit, not shown.

Im Betrieb läuft die Bedruckstoffbahn 1 nach Passieren des Druckspaltes zwischen den Gummituchzylindern 12, 13 berührungsfrei und im wesentlichen horizontal weiter zu einer benachbarten Druckeinheit 17. Diese umfaßt zwei im wesentlichen vertikal übereinander angeordnete Druckwerke, von denen das untere von einem Gummituchzylinder 18, einem Plattenzylinder 19 sowie einem nicht dargestellten Farb- und Feuchtwerk und von denen das obere Druckwerk von einem Gummituchzylinder 20, einem Plattenzylinder 21 sowie einem nicht dargestellten Farb- und Feuchtwerk gebildet wird.In operation, the printing material web 1, after passing through the printing nip between the blanket cylinders 12, 13, runs contact-free and essentially horizontally to an adjacent printing unit 17. This comprises two printing units arranged essentially vertically one above the other, of which the lower one consists of a blanket cylinder 18, a plate cylinder 19 and an inking and dampening unit, not shown, and of which the upper printing unit is formed by a blanket cylinder 20, a plate cylinder 21 and an inking and dampening unit, not shown.

Im freien Raum zwischen den Druckeinheiten 14 und 17 ist zumindestens auf Höhe einer Seitenwand eine senkrecht stehende Führung 22 vorgesehen.A vertical guide 22 is provided in the free space between the printing units 14 and 17 at least at the level of a side wall.

Die Führung 22 ist in vorteilhafter Ausführung nur auf der Antriebsseite der Druckmaschine angeordnet, so daß der Zwischenraum zwischen den Druckeinheiten 14, 17 von der Bedienungsseite aus frei zugänglich bleibt. Längs dieser Führung 22 sind zwei Bahnverdrängungselemente 23, 26 verfahrbar, die in einer vorteilhaften Ausführung miteinander verbunden und somit gemeinsam verfahrbar sind. Die Bahnverdrängungselemente 23 und 26 erstrecken sich im wesentlichen parallel zur Längsrichtung der Bedruckstoffbahn 1. Im gezeigten Ausführungsbeispiel werden sie von flachen Blechen gebildet, die an ihren Enden durch Umkanten abgerundet sind. Andere Formen, wie z.B. halbrund gewölbte Bleche oder zwei sich quer zur Bedruckstoffbahn erstreckende Stangen oder Walzen sind ebenfalls möglich. Die Bahnverdrängungselemente 23, 26 sind übereinander angeordnet und weisen zueinander einen vertikalen Abstand auf. Sie sind längs der Führung 22 vertikal in wenigstens drei verschiedenen Positionen verfahrbar und in diesen Positionen an der Führung 22 einrastbar. Das Verfahren kann in einfachster Weise von Hand erfolgen und wird in diesem Fall dadurch erleichtert, daß sich oben an der Führung 22 - wie Fig. 6 zu entnehmen - eine Umlenkrolle 24 befindet, über die ein Seil geführt ist, das die Bahnverdrängungselemente 23, 26 mit einem auf der anderen Seite der Führung 22 gegenläufig bewegbaren, gleich schweren Gegengewicht 25 verbindet. Das Verfahren der Bahnverdrängungselemente kann jedoch auch in aufwendigerer Weise durch Kurbel und Zahnstange, elektromotorisch, pneumatisch oder hydraulisch erfolgen.The guide 22 is arranged in an advantageous embodiment only on the drive side of the printing press, so that the space between the printing units 14, 17 remains freely accessible from the operating side. Two path displacement elements 23, 26 can be moved along this guide 22, which are connected to one another in an advantageous embodiment and can thus be moved together. The web displacement elements 23 and 26 extend essentially parallel to the longitudinal direction of the printing material web 1. In the exemplary embodiment shown, they are formed by flat sheets which are rounded at their ends by edging. Other shapes, such as semicircular curved sheets or two bars or rollers extending transversely to the printing material web are also possible. The web displacement elements 23, 26 are arranged one above the other and are at a vertical distance from one another. They can be moved vertically along the guide 22 in at least three different positions and can be snapped onto the guide 22 in these positions. The method can be carried out in the simplest manner by hand and is facilitated in this case by the fact that there is a deflection roller 24 on the guide 22 - as can be seen in FIG. 6 - over which a rope is guided, which the web displacement elements 23, 26th connects with an equally heavy counterweight 25 on the other side of the guide 22, which is movable in opposite directions. However, the web displacement elements can also be moved in a more complex manner by means of a crank and toothed rack, by means of an electric motor, pneumatically or hydraulically.

Im Betrieb befinden sich die Bahnverdrängungselemente 23, 26 in einer mittleren Position. In dieser ist die Bedruckstoffbahn 1 horizontal berührungsfrei zwischen der Unterseite des oberen Bahnverdrängungselements 23 und der Oberseite des unteren Bahnverdrängungselements 26 hindurchgeführt. In Fig. 1 sind zusätzlich zu dieser ausgezogen gezeichneten Position zwei weitere Positionen der Bahnverdrängungselemente 23, 26 gestrichelt dargestellt.In operation, the web displacement elements 23, 26 are in a middle position. In this, the printing material web 1 is passed horizontally without contact between the underside of the upper web displacement element 23 and the top of the lower web displacement element 26. In Fig. 1 there are two more in addition to this drawn position Positions of the web displacement elements 23, 26 shown in dashed lines.

In einer unteren, mit 23 a bezeichneten Position stützt sich das obere Bahnverdrängungselement 23 mit seiner Unterseite zumindestens an der Bedienungsseite der Druckmaschine ab und wird dadurch begehbar. Die Bedruckstoffbahn 1 verläuft unterhalb des oberen Bahnverdrängungselements 23, welches dadurch bei abgeschalteter Maschine zur Durchführung von Umrüst- oder Wartungsarbeiten an den oberen Druckwerken der Druckeinheiten 14, 17 ungehindert betreten werden kann.In a lower position, designated 23 a, the upper web displacement element 23 is supported with its underside at least on the operating side of the printing press and can therefore be walked on. The printing material web 1 runs underneath the upper web displacement element 23, which can thus be entered without hindrance when the machine is switched off for carrying out conversion or maintenance work on the upper printing units of the printing units 14, 17.

In einer oberen, mit 23 b bezeichneten Position liegt die Bedruckstoffbahn 1 auf dem unteren Bahnverdrängungselement 26 auf. Der Zwischenraum zwischen den Druckeinheiten 14 und 17 kann für Umrüst- und Wartungsarbeiten an den unteren Druckwerken derselben ungehindert betreten werden.In an upper position, designated 23 b, the printing material web 1 lies on the lower web displacement element 26. The space between the printing units 14 and 17 can be entered unhindered for conversion and maintenance work on the lower printing units thereof.

Der zweiten Druckeinheit 17 ist ferner eine Anordnung, bestehend aus einer Führung 122 und einem oberen Bahnverschrägungselement 123 und einem unteren Bahnverdrängungselement 126, nachgeordnet, die in ihrem Aufbau der aus den Teilen 22, 23, 26 gebildeten Anordnung gleicht. Auch hier sind die Bahnverdrängungselemente 123, 126 - vorzugsweise untereinander verbunden und somit gemeinsam - längs der Führung 122 in eine ausgezogen gezeichnete mittlere Position, eine untere Position 123 a und eine obere Position 123 b verfahrbar. In der unteren Position 123 a ist das obere Bahnverdrängungselement 123 begehbar. Wartungs- und Umrüstarbeiten an der zweiten Druckeinheit 17 sind somit auch von deren Rückseite her möglich.The second printing unit 17 is further followed by an arrangement consisting of a guide 122 and an upper web taper element 123 and a lower web displacement element 126, the structure of which is identical to the arrangement formed from the parts 22, 23, 26. Here, too, the web displacement elements 123, 126 — preferably connected to one another and thus jointly — can be moved along the guide 122 into a drawn central position, a lower position 123 a and an upper position 123 b. In the lower position 123 a, the upper web displacement element 123 can be walked on. Maintenance and retrofitting work on the second printing unit 17 is thus also possible from the rear.

Voraussetzung für eine Veränderung der Bahnlage der Bedruckstoffbahn 1 aus der mittleren Betriebsposition ist bei abgeschalteter Maschine die Freigabe einer zum Verfahren benötigten Bahnlänge durch ein vorgelagertes Bahnspeicherelement, das im Ausführungsbeispiel nach Fig. 1 von der Schwenkleitwalze 9 und den benachbarten Umlenkrollen 2 a und 6 gebildet wird. Hierzu sind folgende Maßnahmen erforderlich: Abstellen der Gummituchzylinder 12 und 13 voneinander, Wegschwenken des Arretierhebels 10, Hochschwenken der Schwenkhebel 8, wodurch die von der Schwenkleitwalze 9 gebildete Bahnschlinge freigegeben wird. Als zusätzliche Maßnahme zur Vorbeugung eines Bahnrisses kann die Anpreßwalze 5 von der Zugwalze 4 abgestellt und die Zugwalze 4 von ihrem Antrieb abgekoppelt werden.A prerequisite for a change in the web position of the printing material web 1 from the middle operating position when the machine is switched off is the release of a web length required for the method by an upstream web storage element, which in the exemplary embodiment according to FIG. 1 is formed by the swivel guide roller 9 and the adjacent deflecting rollers 2 a and 6 . The following measures are for this required: placing the blanket cylinders 12 and 13 apart from one another, pivoting the locking lever 10 away, pivoting the pivot lever 8 upward, thereby releasing the web loop formed by the pivot guide roller 9. As an additional measure for preventing a web break, the pressure roller 5 can be switched off from the pull roller 4 and the pull roller 4 can be uncoupled from its drive.

Die durch die Bahnverdrängungselemente und das Bahnspeicherelement ermöglichten verschiedenen Bahnlagen einer Bedruckstoffbahn sind anhand eines zweiten Ausführungsbeispieles mit einem Eindruckwerk in den Fig. 2 bis 5 besser ersichtlich. Fig. 2 zeigt ein Eindruckwerk bei Verwendung als Normaldruckwerk für Schön- und Widerdruck. Eine Bedruckstoffbahn 31 ist in einem Einzugswerk 33 über mehrere Umlenkrollen 32 geführt, von denen die letzte mit 32 a bezeichnet ist. Das Einzugswerk 33 umfaßt ferner analog zum ersten Ausführungsbeispiel eine Zugwalze und eine Anpreßwalze, die in Fig. 2 aufgrund des gewählten Bildausschnittes jedoch nicht dargestellt sind. An den Seitenwänden des Einzugswerkes 33 ist etwa auf Höhe der Umlenkrolle 32 a ein waagerechter Ausleger 36 angebracht, an dessen Ende eine weitere Umlenkrolle 37 gelagert ist.The different web layers of a printing material web made possible by the web displacement elements and the web storage element can be better seen on the basis of a second exemplary embodiment with an impression mechanism in FIGS. 2 to 5. Fig. 2 shows an impression unit when used as a normal printing unit for perfecting. A printing material web 31 is guided in a feed mechanism 33 over a plurality of deflection rollers 32, the last of which is designated 32 a. The feed mechanism 33 further comprises, analogous to the first exemplary embodiment, a pull roller and a pressure roller, which, however, are not shown in FIG. 2 due to the selected image detail. On the side walls of the feed mechanism 33, a horizontal arm 36 is attached approximately at the level of the deflection roller 32 a, at the end of which a further deflection roller 37 is mounted.

Unterhalb des Auslegers 36 sind an den Seitenwänden des Einzugswerkes 33 Schwenkhebel 38 drehbar gelagert, die an ihrem äußeren Ende eine Schwenkleitwalze 39 tragen. Die Schwenkhebel 38 sind in Fig. 2 in ihrer unteren Endlage dargestellt, in der sie durch einen ebenfalls drehbar an der Seitenwand des Einzugswerks 33 gelagerten Arretierhebel 40 gesichert werden. Die Schwenkhebel 38 sind durch eine nicht dargestellte, vorzugsweise pneumatische Schwenkvorrichtung nach Wegschwenken des Arretierhebels 40 um etwa 150° in eine obere Endlage verschwenkbar (siehe auch Fig. 3 bis 5).Below the boom 36, pivot levers 38 are rotatably mounted on the side walls of the feed mechanism 33 and carry a pivot guide roller 39 at their outer end. The pivot levers 38 are shown in FIG. 2 in their lower end position, in which they are secured by a locking lever 40 which is also rotatably mounted on the side wall of the feed mechanism 33. The swivel levers 38 can be swiveled by approximately 150 ° into an upper end position by a preferably pneumatic swivel device, not shown, after swiveling the locking lever 40 away (see also FIGS. 3 to 5).

Die Bedruckstoffbahn 31 wird in diesem Bereich im Betrieb der Druckmaschine von der letzten Umlenkrolle 32 a kommend nach unten geführt, umschlingt die Schwenkleitwalze 39 von unten her und wird anschließend wieder nach oben über die Umlenkrolle 37 geführt. Die Schwenkhebelwalze 39 formt im Betrieb zwischen den Umlenkrollen 32 a und 37 eine Schlinge und dient somit in Verbindung mit diesen als Bahnspeicherelement.The printing material web 31 is guided downward in this area during operation of the printing machine from the last deflecting roller 32a, wraps around the swivel guide roller 39 from below and is then guided upward again via the deflecting roller 37. The swivel lever roller 39 forms in operation between the deflection rollers 32 a and 37 a loop and thus serves in connection with this as a web storage element.

Von der Umlenkrolle 37 wird die Bedruckstoffbahn 31 so weitergeführt, daß sie horizontal auf den Einlaufspalt zwischen zwei Gummituchzylindern 42 und 43 einer als Eindruckwerk ausgebildeten Druckeinheit 44 zuläuft.From the deflection roller 37, the printing material web 31 is continued so that it runs horizontally onto the inlet gap between two blanket cylinders 42 and 43 of a printing unit 44 designed as an impression unit.

Die Druckeinheit 44 umfaßt zwei im wesentlichen vertikal übereinander angeordnete Druckwerke, deren Gummituchzylinder 42, 43 an einen seitlich dazu angeordneten gemeinsamen Gegendruckzylinder 41 anstellbar sind. Das untere Druckwerk wird vom Gummituchzylinder 42, einem an diesen anstellbaren Plattenzylinder 45 sowie einem nicht näher bezeichneten Farb- und Feuchtwerk gebildet. Das obere Druckwerk wird vom Gummituchzylinder 43, einem an diesen anstellbaren Plattenzylinder 46 sowie einem nicht näher bezeichneten Farb- und Feuchtwerk gebildet.The printing unit 44 comprises two printing units arranged essentially vertically one above the other, the blanket cylinders 42, 43 of which can be adjusted to a common impression cylinder 41 arranged laterally thereto. The lower printing unit is formed by the blanket cylinder 42, a plate cylinder 45 that can be set on it, and an inking and dampening unit (not described in more detail). The upper printing unit is formed by the blanket cylinder 43, a plate cylinder 46 which can be adjusted thereon, and an inking and dampening unit (not described in more detail).

Im Betrieb läuft die Bedruckstoffbahn 31 nach Passieren des Druckspaltes zwischen den Gummituchzylindern 42, 43 über den bei dieser Druckart nur als Papierleitwalze verwendeten Gegendruckzylinder 41 und von dort berührungsfrei und im wesentlichen horizontal zu einer folgenden, nicht dargestellten Druckeinheit.In operation, the printing material web 31 runs after passing the printing gap between the blanket cylinders 42, 43 via the impression cylinder 41 used only as a paper guide roller in this type of printing and from there without contact and essentially horizontally to a subsequent printing unit, not shown.

Im freien Raum zwischen dem Einzugswerk 33 und der ersten Druckeinheit 44 ist zumindest auf Höhe einer Seitenwand eine senkrecht stehende Führung 52 vorgesehen. Die Führung 52 ist in vorteilhafter Ausführung - wie bereits beim ersten Ausführungsbeispiel beschrieben und in Fig. 6 gezeigt - nur auf der Antriebsseite der Druckmaschine angeordnet, so daß der Raum zwischen dem Einzugswerk 33 und der ersten Druckeinheit 44 von der Bedienungsseite aus frei zugänglich bleibt.A vertical guide 52 is provided in the free space between the feed mechanism 33 and the first printing unit 44, at least at the level of a side wall. The guide 52 is arranged in an advantageous embodiment - as already described in the first embodiment and shown in Fig. 6 - only on the drive side of the printing press, so that the space between the feed mechanism 33 and the first printing unit 44 remains freely accessible from the operating side.

Längs der Führung 52 sind zwei Bahnverdrängungselemente 53, 56 verfahrbar, für die bezüglich ihrer Anordnung und Gestaltung analog das bereits weiter oben zu den Bahnverdrängungselementen 23, 26 des ersten Ausführungsbeispiels Gesagte gilt.Two path displacement elements 53, 56 can be moved along the guide 52, for which their arrangement and design are analogous what has already been said above regarding the web displacement elements 23, 26 of the first exemplary embodiment applies.

Der Einlaufspalt zwischen den Gummituchzylindern 42, 43 ist zur Vermeidung von Unfällen durch ein oberes und ein unteres Schutzgitter 57 bzw. 58, die beide bis auf einen geringen Abstand an die Bedruckstoffbahn 31 herangeführt sind, geschützt.To prevent accidents, the inlet gap between the blanket cylinders 42, 43 is protected by an upper and a lower protective screen 57 and 58, both of which are brought close to the printing material web 31.

In Fig. 2 ist die Bedruckstoffbahn 31 bei Verwendung der Druckeinheit 44 im Schön- und Widerdruck berührungsfrei zwischen dem oberen Bahnverdrängungselement 53 und dem unteren Bahnverdrängungselement 56 hindurchgeführt, die beide in einer mittleren Position an der Führung 52 eingerastet sind. Soll nun beispielsweise eine Druckplatte am Plattenzylinder 45 des unteren Druckwerks gewechselt werden, so kann dabei die Bedruckstoffbahn 31 auf folgende Weise verlagert und dadurch der Zugang freigemacht werden.In FIG. 2, the printing material web 31 is guided contact-free between the upper web displacement element 53 and the lower web displacement element 56 when the printing unit 44 is used in face and back printing, both of which are locked in a middle position on the guide 52. If, for example, a printing plate on the plate cylinder 45 of the lower printing unit is now to be changed, the printing material web 31 can be shifted in the following manner and access can thereby be made free.

Zunächst wird, wie in Fig. 3 dargestellt, der Arretierhebel 40 angehoben. Anschließend werden die Schwenkhebel 38 in ihre obere Position geschwenkt. Die Schwenkleitwalze 39 gibt dabei die vorher im Betrieb straff gehaltene Schlinge der Bedruckstoffbahn 31 frei. Die Bedruckstoffbahn 31 ist jetzt ohne Spannung und liegt auf dem unteren Bahnverdrängungselement 56 auf.First, as shown in FIG. 3, the locking lever 40 is raised. The pivot levers 38 are then pivoted into their upper position. The swivel guide roller 39 releases the loop of the printing material web 31 previously held taut during operation. The printing material web 31 is now without tension and lies on the lower web displacement element 56.

In Fig.4 sind beide Bahnverdrängungselemente 53 und 56 längs der Führung 52 in eine obere Position verfahren und dort eingerastet. Die Bedruckstoffbahn 31 wird vom unteren Bahnverdrängungselement 56 mitgenommen, wobei die vorher in der von der Schwenkleitwalze 39 gestrafften Schlinge gespeicherte Bahnlänge beim Anheben der Bahn genutzt wird. Um den vollen Zugang zum unteren Druckwerk zu gewährleisten, wird zusätzlich das untere Schutzgitter 58 nach oben geschwenkt.In FIG. 4, both web displacement elements 53 and 56 have been moved along the guide 52 into an upper position and locked there. The printing material web 31 is carried along by the lower web displacement element 56, the web length previously stored in the loop tightened by the swivel guide roller 39 being used when the web is raised. In order to ensure full access to the lower printing unit, the lower protective screen 58 is additionally pivoted upwards.

In Fig. 5 sind die beiden Bahnverdrängungselemente 53 und 56 - ausgehend von der in Fig. 3 gezeigten Position mit entspannter Bedruckstoffbahn 31 - in eine untere Position verfahren und dort eingerastet. Das obere Bahnverdrängungselement 53 stützt sich dabei zumindestens auf der Bedienungsseite mittels an seiner Unterseite angebrachten Stützelementen 59 auf einen Längsholm der Druckmaschine oder direkt auf deren Fundament ab. Dadurch wird die Oberseite des Bahnverdrängungselements 53 begehbar. Da die Bedruckstoffbahn unterhalb desselben verläuft und gleichzeitig das obere Schutzgitter 57 nach unten geschwenkt wurde, ist der Zugang zum oberen Druckwerk ungehindert möglich.In FIG. 5, the two web displacement elements 53 and 56 - starting from the position shown in FIG. 3, are more relaxed Printing material web 31 - move into a lower position and engage there. The upper web displacement element 53 is supported at least on the operating side by means of support elements 59 attached to its underside on a longitudinal spar of the printing press or directly on its foundation. As a result, the top of the web displacement element 53 is accessible. Since the printing material web runs underneath it and at the same time the upper protective screen 57 has been pivoted downwards, access to the upper printing unit is possible without hindrance.

Zum Zurückstellen in die Druckposition nach Fig. 2 sind die vorstehend beschriebenen Schritte in umgekehrter Reihenfolge durchzuführen: Schutzgitter 57 bzw. 58 in Schutzstellung zurückklappen, Bahnverdrängungselemente 53, 56 in die mittlere Position fahren, Schwenkhebel 38 in die untere Position zurückschwenken und mittels Arretierhebel 40 dort sichern. Sollte als zusätzliche Sicherung gegen ein Reißen der Bahn beim Herabschwenken des Schwenkhebels 38 die Anpreßwalze abgestellt und die Zugwalze vom Antrieb abgekuppelt worden sein - wie im ersten Ausführungsbeispiel beschrieben - so müssen abschließend auch diese Schritte wieder rückgängig gemacht werden.To return to the printing position according to FIG. 2, the steps described above have to be carried out in the reverse order: fold protective grids 57 and 58 back into protective position, move web displacement elements 53, 56 to the middle position, swivel swivel lever 38 back to the lower position and lock lever 40 there to back up. If, as an additional safeguard against tearing of the web when the pivoting lever 38 is swiveled down, the pressure roller has been switched off and the traction roller has been uncoupled from the drive - as described in the first exemplary embodiment - then these steps must also be reversed.

In Fig. 7 ist die aus den Fig. 2 bis 5 bereits bekannte Druckeinheit 44 als Eindruckwerk für fliegenden Platttenwechsel eingesetzt. Hierzu ist eine Bedruckstoffbahn 31′ vom Einzugswerk 33 kommend von der letzten Umlenkrolle 32 a nach unten geführt; sie wird bei unterer Position der Schwenkhebel 38 unter der Schwenkleitwalze 39 herumgeführt. Anschließend wird sie berührungsfrei zwischen den beiden in abgesenkter Position befindlichen Bahnverdrängungselementen 53, 56 hindurch und unter der Druckeinheit 44 hindurch auf deren andere Seite geleitet. Die dort wieder nach oben geführte Bedruckstoffbahn 31′ wird um den Gegendruckzylinder 41 herumgeführt, so daß sie von den Gummtuchzylindern 42 bzw. 43 des unteren bzw. oberen Druckwerks wechselweise einfarbig oder auch gleichzeitig zweifarbig bedruckt werden kann. Durch die vorteilhafte Verwendung der Schwenkleitwalze 39 als Papierleitwalze und die Bahnführung unterhalb des in unterer Position befindlichen und somit begehbaren Bahnverdrängungselementes 56 ist bei dieser Betriebsart der freie Zugang zu beiden Druckwerken für Umrüst- oder Wartungsarbeiten - insbesondere einen Plattenwechsel - jederzeit möglich.In FIG. 7, the printing unit 44 already known from FIGS. 2 to 5 is used as an impression mechanism for flying plate changes. For this purpose, a printing material web 31 'coming from the feed mechanism 33 is guided downwards from the last deflection roller 32a; it is guided around under the pivot guide roller 39 when the pivot lever 38 is in the lower position. It is then passed without contact between the two web displacement elements 53, 56 located in the lowered position and under the printing unit 44 to the other side thereof. The back up there printing substrate web 31 'is guided around the impression cylinder 41 so that it can be printed alternately in one color or at the same time in two colors from the blanket cylinders 42 and 43 of the lower and upper printing units. Due to the advantageous use of the swivel guide roller 39 as a paper guide roller and Web guidance below the web displacement element 56, which is located in the lower position and can thus be walked on, in this operating mode, free access to both printing units for conversion or maintenance work - in particular a plate change - is possible at any time.

Als Bahnspeicherelement ist nicht nur die vorstehend beschriebene Anordnung aus Schwenkleitwalze und benachbarten Umlenkrollen geeignet, sondern prinzipiell jede Vorrichtung, in der eine bestimmte Bahnlänge gespeichert wird, die durch Aufeinanderzubewegen der verwendeten Leitelemente teilweise freigegeben wird. Als Beispiel seien die bekannten Bahnspeicher genannt, wie sie zwischen Rollenwechsler und Einzugswerk zum Konstanthalten der Bahngeschwindigkeit beim Rollenwechsel verwendet werden (siehe Oskar Frei, Rollenoffset, Frankfurt am Main 1979, Seite 35).As a web storage element, not only the arrangement described above of swivel guide roller and adjacent deflection rollers is suitable, but in principle any device in which a certain web length is stored, which is partially released by moving the guide elements used towards one another. An example is the well-known web storage system used between the reel changer and the feed mechanism to keep the web speed constant when changing reels (see Oskar Frei, reel offset, Frankfurt am Main 1979, page 35).

Das Verfahren der Bahnverdrängungselemente erfolgt in jedem Falle bei abgestellten druckbildtragenden Zylindern. Der Hauptantrieb kann sich dagegen auch in einer Beschleunigungs- oder Abbremsphase befinden.In any case, the web displacement elements are moved when the cylinders holding the print image are parked. The main drive, on the other hand, can also be in an acceleration or deceleration phase.

Claims (8)

  1. Device for changing the position of a web to be printed on in a web-fed rotary printing machine into at least three different positions, characterised in that in a web-fed rotary printing machine having printing units (14, 17; 44) arranged in series and a substantially horizontal web path the web to be printed on (1, 31) extends in front of the first printing unit (14; 44) and/or between the printing units (14, 17) in operation in a middle position without contact between two web displacement elements (23, 26; 53, 56; 123, 126) which, when the printed-image-transferring cylinders (12, 13, 18, 20; 42, 43) are stopped, can be moved vertically along a guideway (22; 52; 122) into an upper or a lower position, the upper element (23; 53; 123) of which can be walked on when in its lower position, and in that a web storage element is mounted in front of the web displacement elements (23, 26; 53, 56; 123, 126), and in operation of the printing machine it stores at least one web section of the length required by the movement of the web displacement elements (23, 26; 53, 56; 123, 126) out of the middle position.
  2. Device according to claim 1, characterised in that the guideway (22; 52; 122) is arranged only on the drive side of the printing machine.
  3. Device according to claim 2, characterised in that in the lower position the upper web displacement element (23; 53; 123) is supported with its lower side at least on the operating side of the printing machine opposite the guideway (22; 52; 122).
  4. Device according to one of the preceding claims, characterised in that the web displacement elements (23, 26; 53, 56; 153, 156) are each formed by a deflector plate, rounded at least at the ends, which extends in the longitudinal direction of the web to be printed on (1, 31).
  5. Device according to one of the preceding claims, characterised in that both web displacement elements (23, 26; 53, 56; 123, 126) are joined together and thus can be moved jointly together.
  6. Device according to one of the preceding claims, characterised in that the web storage element is arranged in front of the first operating printing unit (14; 44).
  7. Device according to one of the preceding claims, characterised in that the web storage element is formed by a pivoting guide roller (9; 39) mounted in front of the first printing unit (14; 44) and arranged on a pivoting lever (8; 38) rotatably mounted on the frame of the printing machine, and two adjacent guide rollers (2a, 7; 32a, 37) rigidly mounted on the frame.
  8. Device according to one of the preceding claims, characterised in that the first printing unit (44) is constructed as an imprint unit and in that in the imprint mode the print carrier web (31') can be guided in front of this first printing unit (44) over the pivot guide roller (39) between the web displacement elements (53, 56) located in the lower position (Fig. 7) and under the printing unit (44) through to an impression cylinder (41) of the same.
EP90103220A 1989-02-22 1990-02-20 Device for altering the position of a web to be printed on Expired - Lifetime EP0384385B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3905400A DE3905400A1 (en) 1989-02-22 1989-02-22 DEVICE FOR CHANGING THE RAILWAY LOCATION OF A PRINTED MATERIAL RAIL
DE3905400 1989-02-22

Publications (3)

Publication Number Publication Date
EP0384385A2 EP0384385A2 (en) 1990-08-29
EP0384385A3 EP0384385A3 (en) 1991-04-03
EP0384385B1 true EP0384385B1 (en) 1993-10-20

Family

ID=6374650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103220A Expired - Lifetime EP0384385B1 (en) 1989-02-22 1990-02-20 Device for altering the position of a web to be printed on

Country Status (4)

Country Link
US (1) US5003889A (en)
EP (1) EP0384385B1 (en)
JP (1) JP2839622B2 (en)
DE (2) DE3905400A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0657578B2 (en) * 1990-12-13 1994-08-03 株式会社東京機械製作所 Paper threading device
DE4441142C2 (en) * 1994-11-18 1999-09-30 Koenig & Bauer Ag Two-way swivel frame of a paper roll changing device
DE19548819B4 (en) * 1995-12-27 2004-01-29 Koenig & Bauer Ag printing unit
US5806746A (en) * 1996-10-18 1998-09-15 Pitney Bowes Inc. Method and apparatus for guiding webs in a web handling system
DE19742560A1 (en) * 1997-09-26 1999-04-01 Roland Man Druckmasch Device for changing the web position of a printing material web
DE29801068U1 (en) * 1998-01-23 1998-03-19 Goebel Gmbh Maschf Web guide
DE19803726B4 (en) * 1998-01-30 2007-12-27 Heidelberger Druckmaschinen Ag Printing unit with a printing unit protection and an adjustable suspension for printing unit protection
JP2001072295A (en) * 1999-08-31 2001-03-21 Miyakoshi Printing Machinery Co Ltd Curl preventing device for paper
JP4642969B2 (en) 2000-05-11 2011-03-02 株式会社小森コーポレーション Rotary printing press
DE10149829B4 (en) * 2001-10-09 2005-12-22 Man Roland Druckmaschinen Ag Device for changing the web layer of a printing material web
US7849796B2 (en) 2005-03-30 2010-12-14 Goss International Americas, Inc Web offset printing press with articulated tucker
EP2441584B1 (en) * 2005-03-30 2014-04-30 Goss International Americas, Inc. Web offset printing press with autoplating
JP4814309B2 (en) * 2005-03-30 2011-11-16 ゴス インターナショナル アメリカス インコーポレイテッド Printing unit having blanket cylinder support surface
CN101631679B (en) 2005-03-30 2011-12-07 高斯国际美洲公司 Cantilevered blanket cylinder lifting mechanism
US8037818B2 (en) * 2005-04-11 2011-10-18 Goss International Americas, Inc. Print unit with single motor drive permitting autoplating
FR2895305B1 (en) * 2005-12-27 2009-04-17 Goss Int Montataire Sa PRINTING PRESS WITH ENHANCED BAND COMMITMENT AND METHOD OF ENGAGING CORRESPONDING BAND.
US9180655B2 (en) * 2011-03-11 2015-11-10 Hewlett-Packard Indigo B.V. Convertible buffers for web presses
JP7271992B2 (en) * 2019-02-18 2023-05-12 コニカミノルタ株式会社 printer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1016340A (en) * 1950-04-15 1952-11-07 Paper cutter
SE401476B (en) * 1976-09-20 1978-05-16 Wifag Maschf PAPER PATH CONTROL FOR ROTATING PRINTING MACHINES
DE2932087C2 (en) * 1979-08-08 1985-10-24 Koenig & Bauer AG, 8700 Würzburg Relocatable paper guide in web-fed rotary printing machines
DE3034670C2 (en) * 1980-09-13 1983-02-24 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Paper guide for a web-fed rotary printing press
DE3045051A1 (en) * 1980-11-29 1982-06-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach PRINTER FOR A ROLL ROTATION PRINTING MACHINE
DE3104562A1 (en) * 1981-02-10 1982-09-02 Koenig & Bauer AG, 8700 Würzburg "DEVICE FOR GUIDING A PAPER WEB IN A PRINTING UNIT OF A ROLLING ROTATION PRINTING MACHINE"
DE3119398C2 (en) * 1981-05-15 1984-05-30 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Device for adjusting the length of a web to be printed in a web-fed rotary printing press
DE3225360A1 (en) * 1982-07-07 1984-02-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach ROLL OFFSET ROTATION PRINTING MACHINE
IT1208729B (en) * 1984-12-27 1989-07-10 Colgate Palmolive Co DETECTION AND CONTROL DEVICE FOR STRETCHING IN THE LAMINATION OF SHEET MATERIALS

Also Published As

Publication number Publication date
JP2839622B2 (en) 1998-12-16
EP0384385A2 (en) 1990-08-29
DE3905400C2 (en) 1992-05-27
JPH02251449A (en) 1990-10-09
DE3905400A1 (en) 1990-08-23
US5003889A (en) 1991-04-02
EP0384385A3 (en) 1991-04-03
DE59003105D1 (en) 1993-11-25

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