EP0108761B1 - Method and device for perforating, punching or grooving paper and cardboard in a rotary press - Google Patents

Method and device for perforating, punching or grooving paper and cardboard in a rotary press Download PDF

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Publication number
EP0108761B1
EP0108761B1 EP19830901354 EP83901354A EP0108761B1 EP 0108761 B1 EP0108761 B1 EP 0108761B1 EP 19830901354 EP19830901354 EP 19830901354 EP 83901354 A EP83901354 A EP 83901354A EP 0108761 B1 EP0108761 B1 EP 0108761B1
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EP
European Patent Office
Prior art keywords
cylinder
rubber cloth
film
paper
tools
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
Application number
EP19830901354
Other languages
German (de)
French (fr)
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EP0108761A1 (en
Inventor
Rolf Schellenberg
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.)
SCHELLENBERG, ROLF
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Individual
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Filing date
Publication date
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Priority to AT83901354T priority Critical patent/ATE19024T1/en
Publication of EP0108761A1 publication Critical patent/EP0108761A1/en
Application granted granted Critical
Publication of EP0108761B1 publication Critical patent/EP0108761B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/384—Cutting-out; Stamping-out using rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/008—Apparatus or machines for carrying out printing operations combined with other operations with means for stamping or cutting out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41G—APPARATUS FOR BRONZE PRINTING, LINE PRINTING, OR FOR BORDERING OR EDGING SHEETS OR LIKE ARTICLES; AUXILIARY FOR PERFORATING IN CONJUNCTION WITH PRINTING
    • B41G7/00—Auxiliary perforating apparatus associated with printing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4463—Methods and devices for rule setting, fixation, preparing cutting dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4472—Cutting edge section features
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y10T83/4838—With anvil backup
    • Y10T83/4841—With resilient anvil surface

Definitions

  • the invention relates to a method for perforating, punching or creasing paper and cardboard in rotary printing machines by means of prepared band-shaped tools arranged on an assembly film, the band-shaped tools being applied to an assembly film outside the machine before the start of the workflow, and a device for carrying out this method .
  • a device for performing punchings and perforations on printed or unprinted papers on rotary printing presses is known from US-A-3,554,070.
  • the tools consist of angular bands with a long and a short leg.
  • the short leg runs at right angles to the long leg and is designed as a cutting edge.
  • the cutting edge is continuous or interrupted.
  • perforations for example, it is designed like a sawtooth.
  • the tapes are provided with adhesive on the lower surface of the long leg and are glued in the desired position directly onto the impression cylinder of known rotary printing machines.
  • This impression cylinder is in a known manner in contact with the so-called blanket cylinder, which in turn is in contact with the plate cylinder.
  • the paper to be processed is passed between the impression cylinder and the blanket cylinder, and the cutting edges of the band-shaped tools cut the paper at the desired locations.
  • a print image can be transferred from the plate cylinder to the paper via the rubber blanket mounted on the blanket cylinder.
  • leg of the band-shaped tool provided with the cutting edges can only have a maximum height which corresponds to the space between the surface of the impression cylinder and the surface of the rubber blanket on the rubber blanket cylinder. Since the support leg of the tool must also find space in this space, the cutting edges do not extend over the entire height of the short leg — and — either the paper cannot be cut completely through, or there are raised portions and leg impressions on the paper. As a result, the former means that the paper parts cannot be properly separated from one another, and the latter that high stacks of processed paper sheets cannot be formed.
  • the invention is based on the object of avoiding the disadvantages of the known prior art and of providing a solution with which perforations, punchings or scoring of paper and cardboard can be carried out correctly on rotary printing presses without damaging parts of the machine or the printing device . Furthermore, the solution should enable a shorter downtime of the rotary printing press and allow high working speeds.
  • this object is achieved according to the method in that the rubber blanket is removed from the rubber blanket cylinder in a first working step, and an assembly film with band-shaped tools arranged thereon is applied to the rubber blanket cylinder instead of the rubber blanket.
  • the assembly film is prepared outside the machine before the rotary printing machine is shut down, and the ribbon-shaped tools are arranged on it in the desired positions.
  • the desired tool engagement depth and the desired working pressure are set, after which the paper or cardboard to be processed can be carried out between the blanket and impression cylinder.
  • one is carried out simultaneously with or after the mounting film has been applied to the blanket cylinder before the paper or cardboard is processed second film applied to the impression cylinder.
  • the device for carrying out the method on rotary printing presses comprises a plate cylinder with fastening means for an offset plate, a rubber blanket cylinder with fastening means for a rubber blanket and an impression cylinder as well as a device for changing the center distance between the blanket cylinder and impression cylinder and is characterized in that instead of the Rubber blanket a mounting film is attached, on which band-shaped tools are attached with a perforation, punching or creasing, and that a flat film is arranged on the impression cylinder.
  • the band-shaped tools have a T-shaped cross-section, and the central web is equipped with the desired profiling and cutting edge.
  • the central web of the band-shaped tools is at least 1 mm high.
  • the film can be prepared with the band-shaped tools independently of the machine and can be correctly pulled in and fastened by means of the facilities provided on the blanket cylinder for fastening the blanket.
  • the set-up and downtime on the machine can be reduced by at least 50% compared to the machining process with tools glued to the impression cylinder.
  • Another advantage is that the foils can be used several times by being easily removed from the blanket cylinder and stored after the machining process has ended. After removing the mounting film with the band-shaped tools, the rubber blanket can be pulled back on and the printing process can be continued.
  • the prepared mounting film is removed from the storage again and applied to the rubber blanket cylinder instead of the rubber blanket.
  • the band-shaped tools can be used several times. Resharpening the blunt tools also increases their lifespan.
  • This method according to the invention and the corresponding device also enable printers which have only one rotary printing machine and no punching machine to perform perfect perforation, punching or creasing work.
  • the cylinder arrangement of a rotary printing press shown in FIG. 1 consists of a plate cylinder 1, a blanket cylinder 2 and an impression cylinder 3.
  • a similar but smooth mounting film 7 is also attached to the impression cylinder 3.
  • the center distance 8 between the blanket cylinder 2 and the impression cylinder 3 is adjustable and adjustable with devices not shown.
  • the gap 9 between the cylinders 2 and 3 in the example described is 1.9 mm when the cylinders are completely retracted.
  • a section of a band-shaped tool 6 is shown as an example, which is a perforation tool.
  • This band-shaped perforation tool has a T-shaped cross section with a foot beam 15 and a central web 16.
  • the central web 16 is 1.9 mm high, this dimension including the thickness of the foot beam 15.
  • the central web 16 carries the cutting edge 19 on the upper edge.
  • the central web 16 is further interrupted by gaps 18, whereby profiled teeth are formed. Spaces 18 un felt teeth 17 and the cutting edge 19 have corresponding dimensions depending on the desired shape of the profile.
  • the base 20 of the T-beam 15 is coated with a double-adhesive tape, which is protected by a cover tape when not in use.
  • the desired network of ribbon-shaped tools is initially provided on an assembly film 5 known in printing technology 6 attached.
  • the thickness of the mounting foils 5 and 7 is approximately 0.25 mm in the example described.
  • the band-shaped tools 6 are attached to the mounting film 5 in the flat state of the film 5 and outside the rotary printing press.
  • the protective tape on the base 20 is removed and this base 20 is glued onto the mounting film 5 in the required position.
  • the rubber blanket (not shown) is removed from the blanket cylinder 2, and instead of this blanket the mounting film 5 is pulled onto the blanket cylinder 2 and fastened.
  • the attachment can be carried out by means of the existing attachment means 10 or additional aids.
  • the band-shaped tools 6 adapt with the mounting film 5 to the surface of the blanket cylinder 2 and thereby form the rotating tool surface for processing the paper sheets.
  • a protective film 7 is applied to the impression cylinder 3, which also consists of a known mounting film. This is necessary if the impression cylinder 3 is roughened, as is the case, for example, in straight printing machines.
  • the center distance 8 or the space 9 between the blanket cylinder 2 and the impression cylinder 3 can normally only be adjusted in a small area, approx.
  • the band-shaped tools 6 can be arranged in any manner on the mounting film 5, so that all desired types of perforations, punchings or creases can be produced.
  • the dimensions chosen in the example described allow the processing of cardboard sheets with a weight of more than 300 g / m2. The depth of cut is dependent on the height of the central web 16 or the profile teeth 17 and the center distance 8.
  • the film 5 is kept for later use and can be used again for a similar processing operation.
  • the rubber blanket is pulled back onto the blanket cylinder 2, and the protective film 7 is removed from the impression cylinder 3.
  • the rotary printing press is now ready for further operations.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

In a rotary press comprising a cylinder provided with a blanchet (2) and a printing cylinder (3), the blanchet is replaced by a mounting sheet (5) on which are arranged band-shaped tools (6). The arrangement of the tools (6) corresponds to the perforations, punchings or grooves to be effected on the paper, respectively on the cardboard passing through the rotary press. On the printing cylinder (3) a plane protection sheet (7) is arranged. Both sheets (5 and 7) may be used several times and, owing to means available on the press, they may be rapidly mounted and disassembled.

Description

Die Erfindung betrifft ein Verfahren zum Perforieren, Stanzen oder Rillen von Papier und Karton in Rotationsdruckmaschinen mittels vorbereiteten und auf einer Montagefolie angeordneten bandförmigen Werkzeugen, wobei die bandförmigen Werkzeuge vor Beginn des Arbeitsablaufes ausserhalb der Maschine auf eine Montagefolie aufgebracht werden sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for perforating, punching or creasing paper and cardboard in rotary printing machines by means of prepared band-shaped tools arranged on an assembly film, the band-shaped tools being applied to an assembly film outside the machine before the start of the workflow, and a device for carrying out this method .

Eine Vorrichtung zur Durchführung von Stanzungen und perforierungen an bedruckten oder unbedruckten Papieren auf Rotationsdruckmaschinen ist aus der US-A-3 554 070 bekannt. Bei dieser bekannten Einrichtung bestehen die Werkzeuge aus winkelförmigen Bändern mit einem langen und einem kurzen Schenkel. Der kurze Schenkel verläuft rechtwinklig zum lanqen Schenkel und ist als Schneide ausgebildet. Je nach gewünschter Bearbeitung ist die Schneide durchlaufend oder unterbrochen ausgebildet. Für Perforationen ist sie zum Beispiel sägezahnartig gestaltet. Die Bänder sind an der unteren Fläche des langen Schenkels mit Klebstoff versehen und werden in der gewünschten Lage direkt auf den Gegendruckzylinder von bekannten Rotationsdruckmaschinen aufgeklebt. Dieser Gegendruckzylinder steht in bekannter Weise in Kontakt mit dem sogenannten Gummituchzylinder, welcher seinerseits mit dem Plattenzylinder in Kontakt steht. Nachdem die bandförmigen Werkzeuge in der gewünschten Position auf dem Gegendruckzylinder angeordnet sind wird das zu bearbeitende Papier zwischen Gegendruck- und Gummituchzylinder durchgeführt, und die Schneiden der bandförmigen Werkzeuge trennen das Papier an den gewünschten Stellen durch. Gleichzeitig kann vom Plattenzylinder über das auf dem Gummituchzylinder aufgespannte Gummituch ein Druckbild auf das Papier übertragen werden.A device for performing punchings and perforations on printed or unprinted papers on rotary printing presses is known from US-A-3,554,070. In this known device, the tools consist of angular bands with a long and a short leg. The short leg runs at right angles to the long leg and is designed as a cutting edge. Depending on the desired machining, the cutting edge is continuous or interrupted. For perforations, for example, it is designed like a sawtooth. The tapes are provided with adhesive on the lower surface of the long leg and are glued in the desired position directly onto the impression cylinder of known rotary printing machines. This impression cylinder is in a known manner in contact with the so-called blanket cylinder, which in turn is in contact with the plate cylinder. After the band-shaped tools are arranged in the desired position on the impression cylinder, the paper to be processed is passed between the impression cylinder and the blanket cylinder, and the cutting edges of the band-shaped tools cut the paper at the desired locations. At the same time, a print image can be transferred from the plate cylinder to the paper via the rubber blanket mounted on the blanket cylinder.

In der Praxis zeigt sich, dass ein gleichzeitiges Bedrucken und Perforieren oder Stanzen von Papier nur unter Inkaufnahme von erheblichen Qualitätseinbussen des Druckerzeugnisses möglich ist. Die das Papier durchstossenden Schneiden des bandförmigen Werkzeuges beschädigen das Gummituch auf dem Gummi tuchzylinder und hinterlassen Einschnitte an der Gummituchoberfläche. Dadurch kann das Gummituch für weitere Druckvorgänge nicht mehr verwendet werden und muss ersetzt werden. Im weiteren ist auch das Aufkleben der bandförmigen Werkzeuge auf den Gegendruckzylinder zeitraubend und aufwendig. Bei Schönund Widerdruckmaschinen mit aufgerauhtem Gegendruckzylinder können die Werkzeuqe nicht aufgeklebt werden, da sie auf der Oberfläche des Gegendruckzylinders nicht halten oder die frisch bedruckten Bogen verschmieren. Als weiterer Nachteil zeigt sich auch, dass der mit den Schneiden versehene Schenkel des bandförmigen Werkzeuges nur eine maximale Höhe aufweisen kann, welche dem Zwischenraum zwischen der Oberfläche des Gegendruckzylinders und der Oberfläche des Gummituches auf dem Gummituchzylinder entspricht. Da in diesem Zwischenraum auch noch der Auflageschenkel des Werkzeuges Platz finden muss, erstrecken sich die Schneiden nicht über die ganze Höhe des kurzen Schenkels-und-das Papier kann entweder nicht vollständig durchgeschnitten werden, oder es bilden sich Aufwerfungen sowie Schenkelabdrücke auf dem Papier. Erstere haben zur Folge, dass die Papierteile nicht einwandfrei voneinander getrennt werden können, und Letztere, dass keine hohen Stapel von bearbeiteten Papierbogen gebildet werden können.In practice it has been shown that simultaneous printing and perforating or punching of paper is only possible while accepting considerable losses in the quality of the printed product. The cutting through the paper of the band-shaped tool damage the blanket on the blanket cylinder and leave cuts on the blanket surface. As a result, the rubber blanket can no longer be used for further printing processes and must be replaced. Furthermore, sticking the band-shaped tools onto the impression cylinder is time-consuming and complex. The tools cannot be glued to the printing presses with roughened impression cylinders because they do not stick to the surface of the impression cylinder or smear the freshly printed sheets. Another disadvantage also shows that the leg of the band-shaped tool provided with the cutting edges can only have a maximum height which corresponds to the space between the surface of the impression cylinder and the surface of the rubber blanket on the rubber blanket cylinder. Since the support leg of the tool must also find space in this space, the cutting edges do not extend over the entire height of the short leg — and — either the paper cannot be cut completely through, or there are raised portions and leg impressions on the paper. As a result, the former means that the paper parts cannot be properly separated from one another, and the latter that high stacks of processed paper sheets cannot be formed.

Gemäss der CH-A- 587 107 ist es bekannt, bei rotativen Stanzmaschinen die Schneidlineale mittels eines Bindemittels auf eine Folie aufzubringen, und diese Folie dann auf den Stanzzylinder aufzuziehen. Die Anwendung dieses Verfahrens bei Rotationsdruckmaschinen bringt noch zusätzliche Nachteile mit sich, da die auf den Gegendruckzylinder aufgezogene Folie den für das durchlaufende Papier notwendigen Zwischenraum zwischen Gegendruckzylinder und Gummituchzylinder verringert. Bei gewissen Maschinentypen ist das Einbringen einer mit bandförmigen Werkzeugen versehenen Folie auf den Gegendruckzylinder nur mit sehr grossen Schwierigkeiten möglich.According to CH-A-587 107, it is known in the case of rotary punching machines to apply the cutting rulers to a film by means of a binder, and then to pull this film onto the punching cylinder. The use of this method in rotary printing presses has additional disadvantages, since the film drawn onto the impression cylinder reduces the space between the impression cylinder and the blanket cylinder necessary for the continuous paper. With certain machine types, the introduction of a film provided with band-shaped tools onto the impression cylinder is possible only with very great difficulty.

Der Erfindung liegt die Aufgabe zu Grunde, die Nachteile des bekannten Standes der Technik zu vermeiden und eine Lösung anzugeben, mit welcher auf Rotationsdruckmaschinen Perforierungen, Stanzungen oder Rillungen von Papier und Karton einwandfrei durchgeführt werden können, ohne dass Teile der Maschine oder der Druckeinrichtung beschädigt werden. Im weiteren soll die Lösung eine verkürzte Stillstandszeit der Rotationsdruckmaschine ermöqlichen und hohe Arbeitsgeschwindigkeiten zulassen.The invention is based on the object of avoiding the disadvantages of the known prior art and of providing a solution with which perforations, punchings or scoring of paper and cardboard can be carried out correctly on rotary printing presses without damaging parts of the machine or the printing device . Furthermore, the solution should enable a shorter downtime of the rotary printing press and allow high working speeds.

Gemäss der Erfindung wird diese Aufgabe verfahrensqemäss dadurch gelöst, dass in einem ersten Arbeitsschritt das Gummituch vom Gummituchzylinder entfernt wird, und anstelle des Gummituches eine Montagefolie mit darauf angeordneten bandförmigen Werkzeugen auf den Gummituchzylinder aufgebracht wird. Die Montagefolie wird vor der Stillegung der Rotationsdruckmaschine ausserhalb der Maschine vorbereitet, und die bandförmigen Werkzeuge in den gewünschten Positionen darauf angeordnet. Durch Verändern des Abstandes zwischen Gummituchzylinder und Gegendruckzylinder wird die gewünschte Werkzeugeingriffstiefe und der gewünschte Arbeitsdruck eingestellt, worauf das zu bearbeitende Papier oder der Karton zwischen Gummituch- und Gegendruckzylinder durchgeführt werden kann. In weiterer Ausgestaltung des Verfahrens wird vor dem Bearbeitungsvorgang des Papieres oder Kartons gleichzeitig mit oder nach dem Aufbringen der Montagefolie auf den Gummituchzylinder eine zweite Folie auf den Gegendruckzylinder aufgebracht.According to the invention, this object is achieved according to the method in that the rubber blanket is removed from the rubber blanket cylinder in a first working step, and an assembly film with band-shaped tools arranged thereon is applied to the rubber blanket cylinder instead of the rubber blanket. The assembly film is prepared outside the machine before the rotary printing machine is shut down, and the ribbon-shaped tools are arranged on it in the desired positions. By changing the distance between the blanket cylinder and the impression cylinder, the desired tool engagement depth and the desired working pressure are set, after which the paper or cardboard to be processed can be carried out between the blanket and impression cylinder. In a further embodiment of the method, one is carried out simultaneously with or after the mounting film has been applied to the blanket cylinder before the paper or cardboard is processed second film applied to the impression cylinder.

Die Vorrichtung zur Durchführung des Verfahrens an Rotationsdruckmaschinen umfasst einen Plattenzylinder mit Befestigungsmitteln für eine Offsetplatte, einen Gummituchzylinder mit Befestigungsmitteln für ein Gummituch und einen Gegendruckzylinder sowie eine Einrichtung zur Veränderung des Achsabstandes zwischen Gummituchzylinder und Gegendruckzylinder und zeichnet sich dadurch aus, dass auf dem Gummituchzylinder anstelle des Gummituches eine Montagefolie angebracht ist, auf welcher bandförmige Werkzeuge mit einer Perforier-, Stanz- oder Rillprofilierung befestigt sind, und dass auf dem Gegendruckzylinder eine ebene Folie angeordnet ist. In vorteilhafter Weise weisen die bandförmigen Werkzeuge einen T-förmigen Querschnitt auf, und der Mittelsteg ist mit der gewünschten Profilierung und Schneide ausgestattet. In weiterer Ausgestaltung der Erfindung ist der Mittelsteg der bandförmigen Werkzeuge mindestens 1 mm hoch ausgebildet.The device for carrying out the method on rotary printing presses comprises a plate cylinder with fastening means for an offset plate, a rubber blanket cylinder with fastening means for a rubber blanket and an impression cylinder as well as a device for changing the center distance between the blanket cylinder and impression cylinder and is characterized in that instead of the Rubber blanket a mounting film is attached, on which band-shaped tools are attached with a perforation, punching or creasing, and that a flat film is arranged on the impression cylinder. Advantageously, the band-shaped tools have a T-shaped cross-section, and the central web is equipped with the desired profiling and cutting edge. In a further embodiment of the invention, the central web of the band-shaped tools is at least 1 mm high.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass beim Perforieren, Stanzen oder Rillen von Papier und Karton weder das Gummituch noch die Papier-oder Kartonbogen, durch die bandförmigen Werkzeuge beschädigt werden. Durch das Entfernen des Gummituches wird zudem zwischen Gummituch- und Gegendruckzylinder zusätzlicher Raum gewonnen, wodurch auch grosse Papierdicken bearbeitet werden können. Der die Schneiden tragende Mittelsteg der bandförmigen Werkzeuge kann zudem so hoch ausgebildet werden, dass die Schneide das Papier vollständig durchdringt und keine Aufwerfungen entstehen. Ebenso lassen sich Schenkeleindrücke auf dem Papier eliminieren. Im weiteren ergibt sich eine wesentliche Verkürzung der Stillstandsund Einrichtszeit an der Maschine, da die Folie mit den bandförmigen Werkzeugen unabhängig von der Maschine vorbereitet werden kann und mittels der am Gummituchzylinder für die Befestigung des Gummituches vorhandenen Einrichtungen standrichtig eingezogen und befestigt werden kann. Die Einricht- und Stillstandszeit an der Maschine lässt sich dabei um mindestens 50 % gegenüber dem Bearbeitungsvorgang mit auf den Gegendruckzylinder aufgeklebten Werkzeugen verkürzen. Als weiterer Vorteil ergibt sich, dass die Folien mehrfach verwendet werden können, indem sie nach Beendigung des Bearbeitungsvorganges ohne weiteres vom Gummituchzylinder entfernt und gelagert werden können. Nach Entfernung der Montagefolie mit den bandförmigen Werkzeugen kann das Gummituch wieder aufgezogen und der Druckvorgang fortgesetzt werden, Bei gleichartigen Perforations-, Stanz- oder Rillarbeiten wird die vorbereitete Montagefolie erneut dem Lager entnommen und anstelle des Gummituches auf den Gummituchzylinder aufgebracht. Dies bedeutet, dass die bandförmigen Werkzeuge mehrmals verwendet werden können. Ein Nachschärfen der stumpfen Werkzeuge erhöht zudem die Lebensdauer derselben. Dieses erfindungsgemässe Verfahren und die entsprechende Vorrichtung ermöglichen auch Druckereien, welche nur eine Rotationsdruckmaschine und keine Stanzmaschine besitzen, einwandfreie Perforations-, Stanz- oder Rillarbeiten durchzuführen.The advantages achieved by the invention are essentially to be seen in the fact that when the paper and cardboard are perforated, punched or creased, neither the rubber blanket nor the paper or cardboard sheets are damaged by the band-shaped tools. By removing the blanket, additional space is gained between the blanket and impression cylinder, which means that even thick paper can be processed. The central web of the band-shaped tools, which carries the cutting edges, can also be made so high that the cutting edge penetrates the paper completely and there are no raised parts. Thigh impressions on the paper can also be eliminated. In addition, there is a significant reduction in the downtime and set-up time on the machine, since the film can be prepared with the band-shaped tools independently of the machine and can be correctly pulled in and fastened by means of the facilities provided on the blanket cylinder for fastening the blanket. The set-up and downtime on the machine can be reduced by at least 50% compared to the machining process with tools glued to the impression cylinder. Another advantage is that the foils can be used several times by being easily removed from the blanket cylinder and stored after the machining process has ended. After removing the mounting film with the band-shaped tools, the rubber blanket can be pulled back on and the printing process can be continued. In the case of perforation, punching or creasing work of the same type, the prepared mounting film is removed from the storage again and applied to the rubber blanket cylinder instead of the rubber blanket. This means that the band-shaped tools can be used several times. Resharpening the blunt tools also increases their lifespan. This method according to the invention and the corresponding device also enable printers which have only one rotary printing machine and no punching machine to perform perfect perforation, punching or creasing work.

Weitere Einzelheiten und Merkmale der Erfindung werden nachstehend anhand von Zeichnungen, welche eine Ausführungsform darstellen, näher erläutert. Es zeigen

  • Fig. 1 eine schematische Darstellung der Zylinderanordnung bei Rotationsdruckmaschinen mit den aufgespannten Montagefolien
  • Fig. 2 einen Abschnitt eines bandförmigen Perforationswerkzeuges.
Further details and features of the invention are explained in more detail below with reference to drawings which represent an embodiment. Show it
  • Fig. 1 is a schematic representation of the cylinder arrangement in rotary printing presses with the stretched mounting films
  • Fig. 2 shows a portion of a band-shaped perforation tool.

Die in Figur 1 dargestellte Zylinderanordnung einer Rotationsdruckmaschine besteht aus einem Plattenzylinder 1, einem Gummituchzylinder 2 und einem Gegendruckzylinder 3. Auf dem Plattenzylinder 1 befindet sich noch eine Offsetplatte 4, welche jedoch bei der erfindungsgemässen Nutzung der Rotationsdruckmaschine auch entfernt werden kann. Auf dem Gummituchzylinder 2 ist eine Montagefolie 5 aufgespannt, auf deren Oberfläche bandförmige Werkzeuge 6 angeordnet sind. Eine gleichartige, jedoch glatte Montagefolie 7 ist auch auf dem Gegendruckzylinder 3 befestigt. Der Achsenabstand 8 zwischen dem Gummituchzylinder 2 und dem Gegendruckzylinder 3 ist mit nicht gezeichneten Einrichtungen verstell- und einstellbar. Der Zwischenraum 9 zwischen den Zylindern 2 und 3 beträgt beim beschriebenen Beispiel bei vollständig zusammengefahrenen Zylindern 1,9 mm.The cylinder arrangement of a rotary printing press shown in FIG. 1 consists of a plate cylinder 1, a blanket cylinder 2 and an impression cylinder 3. On the plate cylinder 1 there is also an offset plate 4, which, however, can also be removed when the rotary printing press is used according to the invention. On the blanket cylinder 2, a mounting film 5 is stretched, on the surface of which band-shaped tools 6 are arranged. A similar but smooth mounting film 7 is also attached to the impression cylinder 3. The center distance 8 between the blanket cylinder 2 and the impression cylinder 3 is adjustable and adjustable with devices not shown. The gap 9 between the cylinders 2 and 3 in the example described is 1.9 mm when the cylinders are completely retracted.

In Figur 2 ist als Beispiel ein Abschnitt eines bandförmigen Werkzeuges 6 dargestellt, wobei es sich um ein Perforationswerkzeug handelt. Dieses bandförmige Perforationswerkzeug weist einen T-förmigen Querschnitt mit einem Fussbalken 15 und einem Mittelsteg 16 auf. Der Mittelsteg 16 ist 1,9 mm hoch, wobei dieses Mass die Dicke des Fussbalkens 15 einschliesst. An der oberen Kante trägt der Mittelsteg 16 die Schneide 19. Der Mittelsteg 16 ist im weiteren durch Zwischenräume 18 unterbrochen, wodurch Profilzähne gebildet werden. Zwischenräume 18 un filzähne 17 sowie die Schneide 19 weisen je nach gewünschter Form der Profilierung entsprechende Abmessungen auf. Die Grundfläche 20 des T-Fussbalkens 15 ist mit einem doppelt klebenden Band beschichtet, welches in unbenütztem Zustand durch ein Deckband geschützt wird.In Figure 2, a section of a band-shaped tool 6 is shown as an example, which is a perforation tool. This band-shaped perforation tool has a T-shaped cross section with a foot beam 15 and a central web 16. The central web 16 is 1.9 mm high, this dimension including the thickness of the foot beam 15. The central web 16 carries the cutting edge 19 on the upper edge. The central web 16 is further interrupted by gaps 18, whereby profiled teeth are formed. Spaces 18 un felt teeth 17 and the cutting edge 19 have corresponding dimensions depending on the desired shape of the profile. The base 20 of the T-beam 15 is coated with a double-adhesive tape, which is protected by a cover tape when not in use.

Um Papier- und Kartonbogen mittels Perforieren, Stanzen oder Rillen bearbeiten zu können wird vorerst auf einer in der Druckereitechnik bekannten Montagefolie 5 das gewünschte Netz von bandförmigen Werkzeugen 6 befestigt. Die Dicke der Montagefolien 5 und 7 beträgt beim beschriebenen Beispiel je ca. 0,25 mm. Die Befestigung der bandförmigen Werkzeuge 6 auf der Montagefolie 5 erfolgt in ebenem Zustande der Folie 5 und ausserhalb der Rotationsdruckmaschine. Dazu wird das Schutzband an der Grundfläche 20 entfernt und diese Grundfläche 20 in der notwendigen Position auf die Montagefolie 5 aufgeklebt. Sobald ein Druckvorgang in der Rotationsdruckmaschine beendet ist wird das nicht gezeichnete Gummituch vom Gummituchzylinder 2 entfernt, und anstelle dieses Gummituches die Montagefolie 5 auf den Gummituchzylinder 2 aufgezogen und befestigt. Die Befestigung kann dabei mittels der vorhandenen Befestigungsmittel 10 oder ergänzenden Hilfsmitteln erfolgen. Die bandförmigen Werkzeuge 6 passen sich mit der Montagefolie 5 der Oberfläche des Gummituchzylinders 2 an und bilden dadurch die rotierende Werkzeugfläche zur Bearbeitung der Papierbogen. Im gezeigten Beispiel ist auf den Gegendruckzylinder 3 eine Schutzfolie 7 aufgezogen, welche ebenfalls aus einer bekannten Montagefolie besteht. Dies ist notwendig, wenn der Gegendruckzylinder 3, wie zum Beispiel bei Schöndruckmaschinen, aufgerauht ist. Trotzdem der Achsenabstand 8, bzw. der Zwischenraum 9 zwischen dem Gummituchzylinder 2 und dem Gegendruckzylinder 3 normalerweise nur in einem kleinen Bereich, ca. ± 0,5 mm, verstellt werden kann, ergibt sich nach Entfernung des Gummituches und Aufbringen der Montagefolie 5 eine genügend grosse Verstellmöglichkeit, um einen einwandfreien Schnitt der bandförmigen Werkzeuge 6 durch das durch den Zwischenraum 9 durchlaufende Papier oder den Karton zu ermöglichen. Die bandförmigen Werkzeuge 6 können in beliebiger Art und Weise auf der Montagefolie 5 angeordnet werden, so dass alle gewünschten Arten von Perforierungen, Stanzungen oder Rillungen erzeugt werden können. Die im beschriebenen Beispiel gewählten Abmessungen erlauben die Bearbeitung von Kartonbogen mit einem Gewicht von mehr als 300 g/m2. Die Schnittiefe ist dabei von der Höhe des Mittelsteges 16, bzw. der Profilzähne 17 und dem Achsenabstand 8 abhängig. Nach Beendigung des Bearbeitungsvorganges wird die Montagefolie 5 vom Gummituchzylinder 2 abgenommen, ohne dass an der Lage der bandförmigen Werkzeuge etwas verändert wird. Die Folie 5 wird für spätere Verwendungszwecke aufbewahrt und kann für einen gleichartigen Bearbeitungsvorgang erneut verwendet werden. Für die Fortsetzung von Druckvorgängen mit der gleichen Rotationsdruckmaschine wird das Gummituch wieder auf den Gummituchzylinder 2 aufgezogen, und-die Schutzfolie 7 von dem Gegendruckzylinder 3 entfernt. Damit ist die Rotationsdruckmaschine für weitere Arbeitsvorgänge bereit.In order to be able to process paper and cardboard sheets by means of perforating, punching or creasing, the desired network of ribbon-shaped tools is initially provided on an assembly film 5 known in printing technology 6 attached. The thickness of the mounting foils 5 and 7 is approximately 0.25 mm in the example described. The band-shaped tools 6 are attached to the mounting film 5 in the flat state of the film 5 and outside the rotary printing press. For this purpose, the protective tape on the base 20 is removed and this base 20 is glued onto the mounting film 5 in the required position. As soon as a printing process in the rotary printing press has ended, the rubber blanket (not shown) is removed from the blanket cylinder 2, and instead of this blanket the mounting film 5 is pulled onto the blanket cylinder 2 and fastened. The attachment can be carried out by means of the existing attachment means 10 or additional aids. The band-shaped tools 6 adapt with the mounting film 5 to the surface of the blanket cylinder 2 and thereby form the rotating tool surface for processing the paper sheets. In the example shown, a protective film 7 is applied to the impression cylinder 3, which also consists of a known mounting film. This is necessary if the impression cylinder 3 is roughened, as is the case, for example, in straight printing machines. In spite of the fact that the center distance 8 or the space 9 between the blanket cylinder 2 and the impression cylinder 3 can normally only be adjusted in a small area, approx. ± 0.5 mm, there is sufficient after removing the blanket and applying the mounting film 5 Large adjustment facility to enable a perfect cut of the band-shaped tools 6 through the paper or the cardboard that passes through the intermediate space 9. The band-shaped tools 6 can be arranged in any manner on the mounting film 5, so that all desired types of perforations, punchings or creases can be produced. The dimensions chosen in the example described allow the processing of cardboard sheets with a weight of more than 300 g / m2. The depth of cut is dependent on the height of the central web 16 or the profile teeth 17 and the center distance 8. After completion of the machining process, the mounting film 5 is removed from the blanket cylinder 2 without the position of the band-shaped tools being changed. The film 5 is kept for later use and can be used again for a similar processing operation. To continue printing with the same rotary printing press, the rubber blanket is pulled back onto the blanket cylinder 2, and the protective film 7 is removed from the impression cylinder 3. The rotary printing press is now ready for further operations.

Die Umstellung einer normalen Rotationsdruckmaschine von Druckbetrieb auf den erfindungsgemässen Perforations-, Stanz- oder Rillbetrieb erfordert je nach Grösse der Maschine und der Montagefolie zwischen 12 bis 15 Minuten Zeitaufwand. Die bisher bekannten Verfahren und Vorrichtungen, wobei die bandförmigen Werkzeuge auf den Gegendruckzylinder 3 aufgeklebt wurden, erforderten mindestens einen Zeitaufwand von 30 Minuten. Beim bisher bekannten Verfahren müssen bei Rückkehr auf Druckbetrieb die Werkzeuge vom Gegendruckzylinder 3 abgelöst und können für gleichartige Arbeiten nicht wieder verwendet werden.The conversion of a normal rotary printing machine from printing operation to the perforation, punching or creasing operation according to the invention requires between 12 and 15 minutes, depending on the size of the machine and the mounting film. The previously known methods and devices, wherein the band-shaped tools were glued onto the impression cylinder 3, required at least 30 minutes. In the previously known method, when returning to printing operation, the tools have to be detached from the impression cylinder 3 and cannot be used again for similar work.

Claims (6)

1. Process for perforating, punching or grooving paper and carton in rotary printing presses by means of prepared belt-shaped tools arranged on a mounting film, the beltshaped tools being placed on a mounting film outside the press before the start of the working run, characterised in that the rubber cloth is removed from the rubber cloth cylinder, the mounting film containing the belt-shaped tools is placed on the rubber cloth cylinder in place of the rubber cloth, the desired depth of engagement of the tools and the desired working pressure are adjusted by altering the distance between the rubber cloth cylinder and the back pressure cylinder and the paper or carton to be processed is passed through between the rubber cloth cylinder and the back pressure cylinder.
2. Process according to Claim 1, characterised in that, prior to the processing operation for the paper or carton, at the earliest at the time of, and at the latest following, the placing of the mounting film on to the rubber cloth cylinder, a second film is placed on the back pressure cylinder.
3. Apparatus for carrying out the process according to Claim 1 on rotary printing presses, comprising a plate cylinder (1) provided with fastening means for an offset plate (4), a rubber cloth cylinder (2) provided with fastening means (10) for a rubber cloth and a back pressure cylinder (3) as well as a device for altering the axial distance (8) between the rubber cloth cylinder (2) and the back pressure cylinder (3), characterised in that a mounting film (5) is fitted to the rubber cloth cylinder (2) in place of the rubber cloth, belt- shaped tools (6) having a perforating, punching or grooving profile are fastened to this mounting film (5) and a plane film (7) is arranged on the back pressure cylinder (3).
4. Apparatus according to Claim 3, characterised in that the belt-shaped tools (6) have a T-shaped cross-section and the central crossbar (16) is provided with the desired profile and cutting edge (19).
5. Apparatus according to Claim 3, characterised in that the film (7) on the back pressure cylinder (3) is a mounting film.
6. Apparatus for carrying out the process according to Claim 1, characterised in that the central crossbar (16) of the belt-shaped tools (6) has a height of at least 1 mm.
EP19830901354 1982-05-17 1983-05-09 Method and device for perforating, punching or grooving paper and cardboard in a rotary press Expired EP0108761B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83901354T ATE19024T1 (en) 1982-05-17 1983-05-09 METHOD AND DEVICE FOR PERFORATING, DIE-CUTTING OR CREASING PAPER AND BOARD IN ROTARY PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3042/82A CH655903A5 (en) 1982-05-17 1982-05-17 METHOD AND DEVICE FOR PERFORATING, PUNCHING OR CROWNING PAPER AND CARDBOARD IN ROTARY PRINTING MACHINES.
CH3042/82 1982-05-17

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EP0108761A1 EP0108761A1 (en) 1984-05-23
EP0108761B1 true EP0108761B1 (en) 1986-04-09

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US (1) US4596546A (en)
EP (1) EP0108761B1 (en)
JP (1) JPS59500810A (en)
CA (1) CA1211652A (en)
CH (1) CH655903A5 (en)
DD (1) DD209774A5 (en)
DE (1) DE3362883D1 (en)
IT (2) IT8353311V0 (en)
WO (1) WO1983004004A1 (en)

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IT8353311V0 (en) 1983-05-11
CH655903A5 (en) 1986-05-30
WO1983004004A1 (en) 1983-11-24
IT1201045B (en) 1989-01-27
DD209774A5 (en) 1984-05-23
JPS59500810A (en) 1984-05-10
EP0108761A1 (en) 1984-05-23
CA1211652A (en) 1986-09-23
US4596546A (en) 1986-06-24
IT8367521A0 (en) 1983-05-11
DE3362883D1 (en) 1986-05-15

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