EP0208244B1 - Apparatus for continuously trimming a feed of overlapping printed products - Google Patents

Apparatus for continuously trimming a feed of overlapping printed products Download PDF

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Publication number
EP0208244B1
EP0208244B1 EP86108977A EP86108977A EP0208244B1 EP 0208244 B1 EP0208244 B1 EP 0208244B1 EP 86108977 A EP86108977 A EP 86108977A EP 86108977 A EP86108977 A EP 86108977A EP 0208244 B1 EP0208244 B1 EP 0208244B1
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EP
European Patent Office
Prior art keywords
cutting
counter
blade
printed products
products
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EP86108977A
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German (de)
French (fr)
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EP0208244A3 (en
EP0208244A2 (en
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Adolf Weingartner
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B26D1/245—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • Such cutting devices are known with regard to the usual cutting technology used.
  • their application is directed to the cutting of paper webs and also to the cutting of individually designed printed products which have been created by prior cross-cutting and which are fed to the cutting device in a continuous process according to the transport speed used either to a gap or in the so-called shingled stream.
  • the shingled stream is the common form, so that the shingled stream is then also decisive for the further processing processes.
  • the cutting of individually designed printed products requires a transport device with which the products are conveyed through the cutting gap and at the same time held down so that the attacking cutting forces do not Cause slipping.
  • the arrangement according to DE-A-3022772 has conveyor belts above and below the transport path, which feed the material to be cut to the cutting device for edge trimming.
  • DE-V-8401628.0 shows a similar cutting device in connection with a ribbon line, which is provided for transporting the material to be cut, but the position of the ribbon line is based on the implementation of a separating cut, that is to say a cut that is more or less within the width of the printed product takes place, turned off.
  • the associated knife is designed as a one-piece double knife, so that the strip lying between the cutting edges results in a chip approximately the width of the cutting edge distance.
  • the ribbon cable is straight and close to the cutting line, because the compression of the flexible paper plays a major role in the cutting area.
  • Another device for cutting out which is more variable with regard to the strip width of the cutout, works with offset circular knives, the first longitudinal cut being made by the first coming circular knife and the second longitudinal cut being made by the offset circular knife.
  • This type of cutting out has the advantage that the reaction of the chip, which can be relatively rigid and resistant in the case of printed products in the form of scales, is to be kept low.
  • the known cutting devices are characterized by the table-shaped design due to the associated transport devices.
  • the transport path describes a flat surface because the material to be cut is fed in and out in a straight line.
  • the footprint of such cutting devices is large, and their characteristic structure also means that the entire processing line, on which the production runs in-line from the roll via the printing press and other units to the ready-to-use printed product, is relatively elongated. If the cutouts mentioned are to be made, however, additional space is required in the table-shaped cutting devices because of the offset circular knife arrangement. Investment, operating and maintenance expenses increase almost proportionally, especially since longer processing distances can also be made more difficult technically.
  • the cutting out affects an application of increasing importance because of the production versatility that can be achieved with it, because it enables the customary format division, which is based on the circumference of the printing cylinder and mostly involves transverse folds, to be avoided. This results in a greater variety of products with regard to small, more manageable printed products.
  • a section is designed whose length corresponds to a single or multiple of the circumference of the printing cylinder. This section is subsequently rotated by 90 ° with respect to the transport direction so that the product edges or image edges originally lying transverse to the web development direction come to lie parallel to the transport direction.
  • Cutouts are used when there are pressure-free zones or overfills with overlapping printed images that have to be removed between the adjacent print products.
  • the object of the present invention is to limit the cut-out-enabling products for scale-shaped products to the smallest possible space, thereby favorable conditions for the to create the necessary contact pressure with high cutting quality.
  • the features of the characterizing part of claim 1 include that the shingled stream is cut and transferred simultaneously in one operation with the cutting device. If the counter knife device also has the role of a transfer cylinder, the shingled stream exits with the trimmed sections in the opposite direction to the feed direction, and the outlet of the cutting device is thus on the side of the inlet. While in the case of a table-shaped arrangement of the cutting device, each offset circular knife also normally requires a counter knife, the cutting device according to the invention manages with only one counter knife device in the case of two offset circular knives.
  • the longitudinal cutting device has clamping jaws for holding the stack of sheets on the fold edge, and furthermore the stack of sheets between the clamping bands receiving them.
  • the required synchronization of the sequence of the lower and upper band line with the rotary movement of the circular knives and the counter knife device is achieved by using toothed belts for the band lines on the one hand and toothed belt pulleys in connection with the circular knives and the counter knife device on the other.
  • the feed belt 10 takes over the transport of the printed products in the form of scales as sections P B to the cutting device.
  • the dimension of the visible lateral edge of a section P B results from the width of the folded or unfolded web strands; the dimension of the section P B transversely to the feed belt is approximately the width B comprising several product lengths.
  • the cutting device consists of deflection rollers 6, 7, 8, 9, set up for the strip lines, a deflection drum 3 and the core piece, the counter knife device 1 and the circular knives 2.
  • the loop of the lower band line 4 includes the deflecting rollers 6, 9 and the counter knife device 1; the loop of the upper ribbon line 5 runs over the deflection rollers 7, 8, the deflection drum 3 and the circular knife 2. It goes without saying that the unwinding in one loop runs in the opposite direction to the unwinding in the other loop.
  • the transport path of the printed products within the cutting device extends from the input E via the deflection drum 3 and the counter knife device 1 with the circular knives 1 set to the output A.
  • input E and output A are a pull-in or discharge gap between the lower and upper ribbon lines 4, 5 educated.
  • the conveyor belt 11 is arranged for the removal of the trimmed products P b .
  • the difference in height H that can be found between the feed belt 10 and the conveyor belt 11 is due to the arrangement of the deflection drum 3 located approximately above the counter knife device 1 within the cutting device. Associated with this, a change of curvature takes place for the lower and upper ribbon line 4, 5, and a greater wrap around the ribbon line and thus the printed products in the area of the counter knife device 1 is achieved.
  • the diameter of the deflection drum 3 is selected so that the printed products are not subject to buckling during their contact with them, but their position in the scale flow is stabilized by the predetermined curvature.
  • the diameter of the counter knife device 1 must be so large that a suitable distance between the offset circular knives 2 can be achieved and that the accessibility of the circular knives 2 is also guaranteed.
  • the diameter of the counter knife device 1 depends on the size of the grooved rings 1/1 to be used.
  • the upper ribbon line 5 runs on a pitch circle of the drive and tensioning body 2/1, which is smaller than the pitch circle attributable to the cutting edge of the circular knife 2.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Details Of Cutting Devices (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

The invention relates to an apparatus for continuously trimming a feed of overlapping printed products. To save erection space in the printing room in in-line production, the cutting process is not carried out on a table-like cutting device, but the products are guided round the drum-shaped counterknife device, so that the exit of the cutting device is located on the same side as the entrance. The upper band line resting on the products ensures an improved pressure on the products during cutting as a result of the looping which occurs in this mode of operation. The two circular knives necessary for making a severing cut or cut-out are arranged offset on the circumference of the counterknife device. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Patentanspruchs 1.
Derartige Schneidvorrichtungen sind bezüglich der üblichen angewendeten Schneidtechnik bekannt. In der Graphischen Industrie richtet sich ihre Anwendung auf das Schneiden von Papierbahnen und auch auf das Schneiden von vereinzelt ausgelegten, durch vorheriges Querschneiden entstandener Druckprodukte, die im kontinuierlichen Prozeß gemäß der angewendeten Transportgeschwindigkeit entweder auf Lücke oder im sogenannten Schuppenstrom der Schneidvorrichtung zugeführt werden. Bei aus Falzapparaten erfolgender Auslage ist der Schuppenstrom die gängige Form, so daß der Schuppenstrom dann auch für die Weiterverarbeitungsprozesse maßgeblich ist.The invention relates to a device according to the preamble of patent claim 1.
Such cutting devices are known with regard to the usual cutting technology used. In the graphics industry, their application is directed to the cutting of paper webs and also to the cutting of individually designed printed products which have been created by prior cross-cutting and which are fed to the cutting device in a continuous process according to the transport speed used either to a gap or in the so-called shingled stream. When delivery is made from folders, the shingled stream is the common form, so that the shingled stream is then also decisive for the further processing processes.

Im Gegensatz zum Schneiden von Papierbahnen, bei denen aufgrund des Bahnzugs keine zusätzlichen Maßnahmen zur Ausrichtung und Führung notwendig sind, erfordert das Schneiden vereinzelt ausgelegter Druckprodukte eine Transportvorrichtung, mit deren Hilfe die Produkte durch den Schneidspalt gefördert und gleichzeitig niedergehalten werden, damit die angreifenden Schneidkräfte kein Verrutschen bewirken.In contrast to the cutting of paper webs, where no additional measures for alignment and guidance are necessary due to the web tension, the cutting of individually designed printed products requires a transport device with which the products are conveyed through the cutting gap and at the same time held down so that the attacking cutting forces do not Cause slipping.

Die Anordnung nach der DE-A- 3022772 weist hierfür oberhalb und unterhalb der Transportbahn Transportbänder auf, die das Schneidgut der Schneidvorrichtung zum Randbeschnitt zuführen. Eine ähnliche Schneidvorrichtung in Verbindung mit einer Bandleitung, die zum Transport des Schneidguts vorgesehen ist, zeigt das DE-V-8401628.0, allerdings ist die Lage der Bandleitung auf die Durchführung eines Trennschnitts, also eines Schnitts, der mehr oder weniger innerhalb der Breite des Druckprodukts stattfindet, abgestellt. Das zugehörige Messer ist als einstückiges Doppelmesser ausgebildet, so daß der zwischen den Schneidkanten liegende Streifen einen Span ungefähr von der Breite des Schneidkantenabstands ergibt. Die Bandleitung ist gradlinig und dicht neben der Schnittlinie geführt, weil die Pressung des nachgiebigen Papiers im Schnittbereich eine große Rolle spielt.For this purpose, the arrangement according to DE-A-3022772 has conveyor belts above and below the transport path, which feed the material to be cut to the cutting device for edge trimming. DE-V-8401628.0 shows a similar cutting device in connection with a ribbon line, which is provided for transporting the material to be cut, but the position of the ribbon line is based on the implementation of a separating cut, that is to say a cut that is more or less within the width of the printed product takes place, turned off. The associated knife is designed as a one-piece double knife, so that the strip lying between the cutting edges results in a chip approximately the width of the cutting edge distance. The ribbon cable is straight and close to the cutting line, because the compression of the flexible paper plays a major role in the cutting area.

Eine andere, im Hinblick auf die Streifenbreite des Herausschnitts variablere Vorrichtung zum Herausschneiden arbeitet mit versetzt angeordneten Kreismessern, wobei durch das zuerst kommende Kreismesser der erste Längsschnitt und durch das versetzt angeordnete Kreismesser der zweite Längsschnitt erfolgt. Diese Art des Herausschneidens hat den Vorteil, daß die Rückwirkung des Spans, der bei schuppenförmig ausgelegten Druckprodukten relativ starr und widerstandsfähig sein kann, niedrig zu halten ist.Another device for cutting out, which is more variable with regard to the strip width of the cutout, works with offset circular knives, the first longitudinal cut being made by the first coming circular knife and the second longitudinal cut being made by the offset circular knife. This type of cutting out has the advantage that the reaction of the chip, which can be relatively rigid and resistant in the case of printed products in the form of scales, is to be kept low.

Die bekannten Schneidvorrichtungen sind aufgrund der zugehörigen Transportvorrichtungen durch die tischförmige Gestaltung geprägt. Die Transportbahn beschreibt eine ebene Fläche, weil das Schneidgut geradlinig zu- und abgeführt wird. Die Stellfläche solcher Schneidvorrichtungen ist groß, und außerdem führt ihr charakteristischer Aufbau dazu, daß die gesamte Verarbeitungsstrecke, auf der die Produktion In-line-mäßig von der Rolle weg über die Druckmaschine und weitere Aggregate bis zum gebrauchsfertigen Druckprodukt abläuft, relativ langgestreckt ist.
Wenn die erwähnten Herausschnitte vorzunehmen sind, erwächst jedoch bei den tischförmig gestalteten Schneidvorrichtungen wegen der versetzten Kreismesseranordnung zusätzlicher Platzbedarf. Investitions-, Betriebs- und Wartungsaufwand nehmen damit nahezu proportional zu, zumal sich längere Verarbeitungswege insgesamt auch technisch gesehen schwieriger gestalten lassen.
Das Herausschneiden betrifft wegen der damit zu erzielenden Produktionsvielseitigkeit eine Anwendung von zunehmender Bedeutung, denn es ermöglicht die übliche Formataufteilung, die sich am Druckzylinderumfang orientiert und meistens Querfalzen einbezieht, zu umgehen. Dadurch ergibt sich eine höhere Produktvielfalt im Hinblick auf kleine, handlichere Druckprodukte.
Bei Aufteilung des Druckzylinderumfangs zum Beispiel in drei Produktlängen wird ein Abschnitt ausgelegt, dessen Länge dem Einfachen oder Mehrfachen des Druckzylinderumfangs entspricht. Dieser Abschnitt wird nachfolgend um 90° gegenüber der Transportrichtung gedreht, damit die ursprünglich quer zur Bahnabwicklungsrichtung liegenden Produktkanten oder Bildränder parallel zur Transportrichtung zu liegen kommen. Mit dieser Maßnahme können die einer Produktlänge zuordenbaren Einzelabschnitte mittels Längsschneiden gewonnen werden. Herausschnitte werden angewandt, wenn zwischen den angrenzenden Druckprodukten druckfreie Zonen oder Überfüllungen mit sich überschneidenden Druckbildern vorkommen, die zu entfernen sind.The known cutting devices are characterized by the table-shaped design due to the associated transport devices. The transport path describes a flat surface because the material to be cut is fed in and out in a straight line. The footprint of such cutting devices is large, and their characteristic structure also means that the entire processing line, on which the production runs in-line from the roll via the printing press and other units to the ready-to-use printed product, is relatively elongated.
If the cutouts mentioned are to be made, however, additional space is required in the table-shaped cutting devices because of the offset circular knife arrangement. Investment, operating and maintenance expenses increase almost proportionally, especially since longer processing distances can also be made more difficult technically.
The cutting out affects an application of increasing importance because of the production versatility that can be achieved with it, because it enables the customary format division, which is based on the circumference of the printing cylinder and mostly involves transverse folds, to be avoided. This results in a greater variety of products with regard to small, more manageable printed products.
If the circumference of the printing cylinder is divided into three product lengths, for example, a section is designed whose length corresponds to a single or multiple of the circumference of the printing cylinder. This section is subsequently rotated by 90 ° with respect to the transport direction so that the product edges or image edges originally lying transverse to the web development direction come to lie parallel to the transport direction. With this measure, the individual sections that can be assigned to a product length can be be obtained by slitting. Cutouts are used when there are pressure-free zones or overfills with overlapping printed images that have to be removed between the adjacent print products.

Wegen des nachteiligen Platzbedarfs tischförmiger Schneidvorrichtungen zum kontinuierlichen Längsschneiden und des damit sich in die Länge streckenden Verarbeitungsweges bei In-line-Produktion besteht die Aufgabe der vorliegenden Erfindung darin, eine Herausschnitt ermöglichende für schuppenstromförming ausliegende Produkte auf geringstmöglichen Raum zu beschränken, dabei günstige Verhältnisse für die zum Herausschneiden notwendige Anpressung bei hoher Schnittqualität zu schaffen.
Die Merkmale des Kennzeichenteiles des Anspruches 1 beinhalten, daß mit der Schneidvorrichtung in einem Arbeitsgang der Schuppenstrom gleichzeitig geschnitten und überführt wird. Wenn der Gegenmesservorrichtung zusätzlich die Rolle eines Überführungszylinders zufällt, tritt der Schuppenstrom mit den beschnittenen Abschnitten in Gegenrichtung zur Zuführrichtung aus, und der Ausgang der Schneidvorrichtung liegt somit auf der Seite des Eingangs. Während im Normalfall bei tischförmiger Anordnung der Schneidvorrichtung jedes versetzte Kreismesser auch je ein Gegenmesser erfordert, kommt die erfindungsgemäße Schneidvorrichtung bei zwei versetzt angeordneten Kreismessern mit nur einer Gegenmesservorrichtung aus.Because of the disadvantageous space requirement of table-shaped cutting devices for continuous longitudinal cutting and the lengthening processing path in in-line production, the object of the present invention is to limit the cut-out-enabling products for scale-shaped products to the smallest possible space, thereby favorable conditions for the to create the necessary contact pressure with high cutting quality.
The features of the characterizing part of claim 1 include that the shingled stream is cut and transferred simultaneously in one operation with the cutting device. If the counter knife device also has the role of a transfer cylinder, the shingled stream exits with the trimmed sections in the opposite direction to the feed direction, and the outlet of the cutting device is thus on the side of the inlet. While in the case of a table-shaped arrangement of the cutting device, each offset circular knife also normally requires a counter knife, the cutting device according to the invention manages with only one counter knife device in the case of two offset circular knives.

Ebenmäßiger Kontakt der Druckprodukte mit der Unterlage beim Transport und beim Schneiden wird dadurch gewährleistet, daß die Bänder der unteren Bandleitung in die die Unterlage bildende Mantelfläche der Gegenmesservorrichtung nahezu bündig eingelassen sind. Die auf den Druckprodukten aufliegende obere Bandleitung ergibt durch die im Schneidbereich vorliegende Umschlingung eine zum Mittelpunkt der trommelförmigen Gegenmesservorrichtung gerichtete resultierende Anpressung, was sich als wesentliche Verbesserung gegenüber der bei gradlinig geführten Bändern ausgeübten Anpressung darstellt.
Die Herumführung der Druckprodukte um die Gegenmesservorrichtung schafft auch einen gewissen Formschlußeffekt.Even contact of the printed products with the base during transport and cutting is ensured by the fact that the strips of the lower ribbon line are embedded almost flush in the lateral surface of the counter knife device forming the base. The upper ribbon line resting on the printed products, due to the looping present in the cutting area, results in a resulting pressure directed towards the center of the drum-shaped counter knife device, which is a significant improvement over the pressure exerted in the case of straight ribbons.
Moving the printed products around the counter knife device also creates a certain positive locking effect.

Es ist gemäß DE-A-25 14 837 bekannt, einen vom Sattel gefalzten Bogenstapel mit Besäumschnitt und Mittelschnitt zu versehen. Die Längsschneidvorrichtung weist Spannbacken zum Halten des Bogenstapels an der Falzkante, weiter den Bogenstapel zwischen sich aufnehmende Klemmbänder auf.According to DE-A-25 14 837 it is known to provide a sheet stack folded from the saddle with a trimming cut and a central cut. The longitudinal cutting device has clamping jaws for holding the stack of sheets on the fold edge, and furthermore the stack of sheets between the clamping bands receiving them.

Für den Längsschnitt von Bahnen ist es nach der DE-C-641 235 bekannt, Streifen-Herausschnitte mit am Umfang eines Gegenmessers versetzten Tellermessern zu tätigen.For the longitudinal cutting of webs, it is known from DE-C-641 235 to make strip cuts with plate knives offset on the circumference of a counter knife.

Beides, sowohl der Formschlußeffekt als auch die erhöhte Anpressung kommen der Lagestabilität der Druckprodukte und damit der Schnittqualität zugute.
Eine vorteilhafte Weiterbildung betrifft die Veränderung der Schnittabstände bzw. der Breite des beim Herausschneiden anfallenden Spans mittels verschieden breiter Zwischenringe, die auf der Welle der Gegenmesservorrichtung sitzen.
Zur Erzielung weitestgehender Schlupffreiheit der Druckprodukte zwischen der unteren und oberen Bandleitung ist ein geringer Überstand der Bänder der unteren und/oder oberen Bandleitung über die Oberfläche der Gegenmesservorrichtung und/oder der Antriebs- und Spannkörper für die Kreismesser vorgesehen.Both the positive locking effect and the increased contact pressure benefit the positional stability of the printed products and thus the cut quality.
An advantageous further development relates to the change in the cutting distances or the width of the chip produced when cutting out by means of intermediate rings of different widths which are seated on the shaft of the counter knife device.
In order to achieve the greatest possible freedom from slippage of the printed products between the lower and upper ribbon line, a slight protrusion of the ribbons of the lower and / or upper ribbon line over the surface of the counter knife device and / or the drive and tensioning body for the circular knife is provided.

Die erforderliche Synchronisation des Ablaufs der unteren und oberen Bandleitung mit der rotativen Bewegung der Kreismesser und der Gegenmesservorrichtung wird durch die Verwendung von Zahnriemen für die Bandleitungen einerseits und Zahnriemenscheiben in Verbindung mit den Kreismessern und der Gegenmesservorrichtung andererseits erzielt.The required synchronization of the sequence of the lower and upper band line with the rotary movement of the circular knives and the counter knife device is achieved by using toothed belts for the band lines on the one hand and toothed belt pulleys in connection with the circular knives and the counter knife device on the other.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.In the drawing, an embodiment of the invention is shown.

Es zeigen:

Fig. 1:
Schematisierte Vorderansicht der Schneidvorrichtung.
Fig. 2:
Schematisierte Seitenansicht der Gegenmesservorrichtung und der Kreismesser, geklappt gemäß Ansicht X, Bänder geschnitten.
Show it:
Fig. 1:
Schematic front view of the cutting device.
Fig. 2:
Schematic side view of the counter knife device and the circular knife, folded according to view X, strips cut.

Das Zuführband 10 übernimmt den Antransport der in Schuppenform ausliegenden Druckprodukte als Abschnitte PB zur Schneidvorrichtung. Die Abmessung der sichtbaren seitlichen Kante eines Abschnitts PB ergibt sich aus der Breite der gefalzten oder ungefalzten Bahnstränge; die Abmessung des Abschnitts PBquer zum Zuführband beträgt ungefähr die mehrere Produktlängen umfassende Breite B.
Die Schneidvorrichtung besteht aus für die Bandleitungen eingerichteten Umlenkwalzen 6,7,8,9, einer Umlenktrommel 3 und dem Kernstück, der Gegenmesservorrichtung 1 und den Kreismessern 2.The feed belt 10 takes over the transport of the printed products in the form of scales as sections P B to the cutting device. The dimension of the visible lateral edge of a section P B results from the width of the folded or unfolded web strands; the dimension of the section P B transversely to the feed belt is approximately the width B comprising several product lengths.
The cutting device consists of deflection rollers 6, 7, 8, 9, set up for the strip lines, a deflection drum 3 and the core piece, the counter knife device 1 and the circular knives 2.

Die Schleife der unteren Bandleitung 4 schließt die Umlenkwalzen 6,9 und die Gegenmesservorrichtung 1 ein; die Schleife der oberen Bandleitung 5 verläuft über die Umlenkwalzen 7,8, die Umlenktrommel 3 und die Kreismesser 2. Es versteht sich von selbst, daß die Abrollung in der einen Schleife gegensinnig zu der Abrollung in der anderen Schleife verläuft.
Die Transportstrecke der Druckprodukte innerhalb der Schneidvorrichtung erstreckt sich vom Eingang E über die Umlenktrommel 3 und Gegenmesservorrichtung 1 mit den angestellten Kreismessern 1 zum Ausgang A. Üblicherweise sind Eingang E und Ausgang A als Einzieh- bzw. Austragsspalt zwischen der unteren und oberen Bandleitung 4,5 gebildet.
Anschließend an den Ausgang A ist das Transportband 11 zum Abtransport der beschnittenen Produkte Pb angeordnet. Der vorfindbare Höhenunterschied H zwischen dem Zuführband 10 und dem Transportband 11 geht innerhalb der Schneidvorrichtung auf die Anordnung der in etwa oberhalb der Gegenmesservorrichtung 1 befindlichen Umlenktrommel 3 zurück. Hiermit verbunden vollzieht sich für die untere und obere Bandleitung 4,5 ein Krümmungswechsel, zudem wird eine größere Umschlingung der Band leitung und damit der Druckprodukte im Bereich der Gegenmesservorrichtung 1 erzielt.
Der Durchmesser der Umlenktrommel 3 ist so gewählt, daß die Druckprodukte während ihrer Anlage an sie nicht knickbelastet sind, jedoch durch die vorgegebene Wölbung ihre Lage im Schuppenstrom stabilisiert wird.
Der Durchmesser der Gegenmesservorrichtung 1 muß so groß sein, daß sich ein geeigneter Abstand der zueinander versetzten Kreismesser 2 erreichen läßt und daß auch die Zugänglichkeit der Kreismesser 2 gewährleistet ist. Weiterhin richtet sich der Durchmesser der Gegenmesservorrichtung 1 nach der Größe der einzusetzenden Nutenringe 1/1. Wie ersichtlich, läuft die obere Bandleitung 5 auf einem Teilkreis des Antriebs- und Spannkörpers 2/1 ab, der kleiner als der der Schneidkante des Kreismessers 2 zurechenbare Teilkreis ist.The loop of the lower band line 4 includes the deflecting rollers 6, 9 and the counter knife device 1; the loop of the upper ribbon line 5 runs over the deflection rollers 7, 8, the deflection drum 3 and the circular knife 2. It goes without saying that the unwinding in one loop runs in the opposite direction to the unwinding in the other loop.
The transport path of the printed products within the cutting device extends from the input E via the deflection drum 3 and the counter knife device 1 with the circular knives 1 set to the output A. Typically, input E and output A are a pull-in or discharge gap between the lower and upper ribbon lines 4, 5 educated.
Following the exit A, the conveyor belt 11 is arranged for the removal of the trimmed products P b . The difference in height H that can be found between the feed belt 10 and the conveyor belt 11 is due to the arrangement of the deflection drum 3 located approximately above the counter knife device 1 within the cutting device. Associated with this, a change of curvature takes place for the lower and upper ribbon line 4, 5, and a greater wrap around the ribbon line and thus the printed products in the area of the counter knife device 1 is achieved.
The diameter of the deflection drum 3 is selected so that the printed products are not subject to buckling during their contact with them, but their position in the scale flow is stabilized by the predetermined curvature.
The diameter of the counter knife device 1 must be so large that a suitable distance between the offset circular knives 2 can be achieved and that the accessibility of the circular knives 2 is also guaranteed. Furthermore, the diameter of the counter knife device 1 depends on the size of the grooved rings 1/1 to be used. As can be seen, the upper ribbon line 5 runs on a pitch circle of the drive and tensioning body 2/1, which is smaller than the pitch circle attributable to the cutting edge of the circular knife 2.

Umlenkwalzen 6,7,8,9, Umlenktrommel 3 und Gegenmesservorrichtung 1 sind als Drehkörper auf Wellen gelagert, die sich zwischen nicht eingezeichneten Gestellwänden erstrecken. Gleichermaßen ortsfest gelagert sind die Stangen 2/3, auf denen die Halterungen 2/2 für die Kreismesser 2 klemm- und schwenkbar befestigt sind. Genaue Justierung der Kreismesser 2 gegenüber der Gegenmesservorrichtung 1 bezüglich der Einstechtiefe ermöglicht der Verstelltrieb 2/4.
Der Antrieb der unteren und oberen Bandleitung 4,5 erfolgt über die ausgangsseitigen Umlenkwalzen 8,9. Bedingt durch Seilreibung bzw. durch die Formschlüssigkeit beim Zahnriementrieb findet eine Antriebsübertragung auch auf die anderen, in die Schleifen der unteren und oberen Bandleitung 4,5 einbezogenen Drehkörper statt. Spannelemente, die auf die Bänder bzw. Riemen der unteren und oberen Bandleitung 4,5 eingreifen, sind in bekannter Weise angeordnet. Vom Ausgang A gelangen die Druckprodukte beschnitten als quer zur Transportrichtung liegende Einzelabschnitte Pb auf das Abtransportband 11. Die Abmessung der sichtbaren seitlichen Kante eines Einzelabschnitts Pb ergibt sich wiederum aus der Breite der gefalzten oder ungefalzten Bahnstränge; die Abmessung der Einzelabschnitte Pb quer zum Antransportband 11 gehorcht der eingestellten Schnittbreite. Der mehrfache Herausschnitt führt zu einer entsprechenden Anzahl nebeneinander liegender, gebrauchsfertig beschnittener Druckprodukte Pb, die sich zum Beispiel unmittelbar anschließend stapeln lassen. Anfallende Späne vom Herausschneiden werden in bekannter, hier nicht aufgezeigter Weise kontinuierlichentfernt.
Fig. 2 zeigt die Ansicht X der Schneidvorrichtung in Bezug auf die hauptsächlichen zur Anordnung der Kreismesser 2 und der Gegenmesservorrichtung 1 gehörenden Teile.
Die trommelförmige Gegenmesservorrichtung 1 besteht im wesentlichen aus aneinandergereihten Ringen, die klemm- und verschiebbar auf die Welle 1/3 aufgebracht sind. An die Zwischenringe 1/2, die in Anpassung an die anzuwendenden Schnittabstände in verschiedener Breite ausgeführt sein können, sind beidseitig Nutenringe 1/1 angeflanscht. Der Abstand der Nutenringe 1/1, die in Richtung der Nut Vorsprünge tragen, so daß ein Nutenring 1/1 mit dem gegenüberliegenden Nutenring 1/1 ein schwalbenschwanzförmiges Profil ergibt, bestimmt die Breite des Herausschnitts bzw. des Spans. Den seitlichen Abschluß des aus Ringen bestehenden Aufbaues der Gegenmesservorrichtung 1 bilden die Deckringe 1/5.
Zur Ausübung optimaler Anpressung auf die zu schneidenden Druckprodukte vor allem unmittelbar in Höhe der Schnittlinie bildet der Nutenring 1/1 mit einem Absatz des Zwischenrings 1/2 die zur Führung eines Bands der unteren Bandleitung 4 vorzugebende Führungsnut 1/4. Damit nimmt die Bandleitung 4,5 den geringstmöglichen Parallelabstand zur Schnittlinie ein. Bei entsprechend gewähltem Überstand des Bands über die ablaufende Außenfläche der Gegenmesservorrichtung 1 und/oder die Außenfläche des Antriebs- und Spannkörpers lassen sich Anpressung und Transport der Druckprodukte PB,Pb aufgrund der gummielastischen Eigenschaft der Bänder und der Reibwertbeeinflussung noch verbessern.
Erforderlichenfalls kann die für den Bandlauf vorgesehene Führungsnut 1/4 auch mittels zwischengeflanschter Zahnriemenscheiben gewonnen werden, um den Antrieb formschlüssig zu gestalten. Die Übersetzung der Zahnriemenscheiben wird dabei so ausgewählt, daß die bezweckte Voreilung zustande kommt.
Teilweise ist von nun an zusätzliche Apostrophierung zur besseren Unterscheidung der oben und der versetzt untenliegenden Anordnung der Kreismesser 2 eingeführt.
Die Kreismesser 2 sind an Antriebs- und Spannkörpern 2/1 befestigt, die auf den Enden von schwenk- und klemmbaren Halterungen 2/2 gelagert sind. Die Halterungen 2/2' der Kreismesser 2', die die eine Seite des Herausschnitts tätigen und deshalb gleiche Orientierung zeigen, sind über eine obere Stange 2/3' verbunden; die Halterungen 2/2'' für die versetzt angeordneten Kreismesser 2'', die die andere Seite des Herausschnitts tätigen, sind entsprechend auf einer unteren Stange 2/3'' angeordnet. Die obere und die untere Stangen 2/3', 2/3'' ertrecken sich wiederum zwischen den nicht aufgezeigten Gestellwänden.
Jedes Kreismesser 2 ist somit einzelaufgehängt und läßt sich individuell sowohl seitlich in Anpassung an die Schnittabstände als auch bezüglich der Einstechtiefe in die durch die Nutenringe 1/1 gebildete Schneidnut einstellen. Auf diese Weise ergibt sich auch eine praktische Handhabung für das Nachstellen im Verschleißfall. Die genaue Justierung der Einstechtiefe wird mit dem in Fig. 1 gezeigten Verstelltrieb 2/4 vorgenommen. Bedingt durch die Einzelaufhängung der Kreismesser 2 benötigt jedes Kreismesser 2 Einzelantrieb. Zu diesem Zweck greift jeweils ein Band in einer in den Antriebs- und Spannkörper 2/1 integrierte Zahnriemenscheibe.
Nachdem die Bänder jeweils beidseitig eines Herausschnitts verlaufen, also diesen förmlich zwischen sich nehmen und die Zahl der Bänder innerhalb eines Bandsatzes der unteren und der oberen Bandleitung 4,5 jeweils um 1 höher als die Zahl der Herausschnitte liegt, ist oben und unten je einer der außenliegenden Antriebs- und Spannkörper 2/1 ohne Kreismesser 2 und nur zur Führung eines Bands angeordnet.
Fig. 2 zeigt nochmals deutlich, daß die mit dem Schuppenstrom in Berührung kommenden, sich abwälzenden Außenflächen der Gegenmesservorrichtung 1 und der Antriebs- und Spannkörper 2/1 mit einer Umfangsgeschwindigkeit laufen, die gleich der Geschwindigkeit der Außenfaser der Bänder der unteren und oberen Bandleitung 4,5 ist. Die Schneidkanten laufen wegen ihres größeren Durchmessers schneller. Das vorliegende Ausführungsbeispiel ergibt systematisch mit 4 Paaren von Kreismessern 2 mit jeweils einem Satz Kreismesser 2',2'', auf der oberen bzw. unteren Stange 2/3', 2/3'' zur Tätigung der einen bzw. der anderen Seite der Herausschnitte, 4 Paaren von Nutenringen 1/1, 5 Paaren von Antriebs-und Spannkörpern 2/1 und fünf Zwischenringen 1/2,vier Herausschnitte. Gemäß dieser Systematik lassen sich beliebige Varianten der Schneidvorrichtung in Bezug auf die Zahl der zu tätigenden Herausschnitte und anhand der Zwischenringe in Bezug auf die Schnittabstände ableiten. Bei Verzicht einer, z.B. der oberen oder unteren Anordnung von Kreismessern 2 ist statt Herausschnitt auch sog. Durch-oder Trennschnitt möglich. Dabei fällt selbstverständlich kein Span an.

1
Gegenmesservorrichtung
1/1
Nutenringe
1/2
Zwischenringe
1/3
Welle der Gegenmesservorrichtung
1/4
Führungsnute
1/5
Deckring
2
Kreismesser
2/1
Antriebs- und Spannkörper für Kreismesser
2/2
Halterung für Kreismesser
3
Umlenktrommel
4
untere Bandleitung
5
obere Bandleitung
6,7
Umlenkwalzen
8
Bandwalze mit Abtrieb der unteren Bandleitung
9
Bandwalze mit Antrieb der oberen Bandleitung
10
Zuführband für die Druckprodukte in Schuppenform
11
Transportband zum Abtransport der beschnittenen Druckprodukte in Schuppenform
Deflection rollers 6, 7, 8, 9, deflection drum 3 and counter knife device 1 are mounted as rotating bodies on shafts which extend between frame walls (not shown). The rods 2/3, on which the holders 2/2 for the circular knives 2 are fastened in a clampable and pivotable manner, are likewise fixed in place. The adjustment drive 2/4 enables the circular knives 2 to be precisely adjusted with respect to the counter-knife device 1 with respect to the penetration depth.
The lower and upper ribbon lines 4, 5 are driven via the output-side deflecting rollers 8, 9. Due to the friction of the rope or the positive locking of the toothed belt drive, a drive transmission also takes place to the other rotating bodies involved in the loops of the lower and upper ribbon cables 4, 5. Tensioning elements which engage the belts or belts of the lower and upper belt lines 4, 5 are arranged in a known manner. From the exit A, the printed products arrive at the removal belt 11, trimmed as individual sections P b lying transversely to the transport direction. The dimension of the visible lateral edge of an individual section P b again results from the width of the folded or unfolded web strands; the dimension of the individual sections P b transversely to the conveyor belt 11 obeys the set cutting width. The multiple cut-out leads to a corresponding number of juxtaposed, ready-to-use cut printed products P b , which can be stacked immediately afterwards, for example. Shavings from cutting out are continuously removed in a known manner, not shown here.
2 shows the view X of the cutting device in relation to the main parts belonging to the arrangement of the circular knives 2 and the counter knife device 1.
The drum-shaped counter knife device 1 consists essentially of rows of rings which are clamped and slidably mounted on the shaft 1/3. Grooved rings 1/1 are flanged on both sides of the intermediate rings 1/2, which can be designed in different widths to match the cutting distances to be used. The distance between the groove rings 1/1, which carry projections in the direction of the groove, so that a groove ring 1/1 with the opposite groove ring 1/1 results in a dovetail-shaped profile determines the width of the cutout or the chip. The cover rings 1/5 form the lateral end of the structure of the counter knife device 1 consisting of rings.
In order to exert optimal pressure on the printed products to be cut, especially directly at the cutting line, the groove ring 1/1 with a shoulder of the intermediate ring 1/2 forms the guide groove 1/4 to be specified for guiding a band of the lower band line 4. The ribbon cable 4,5 thus takes the smallest possible parallel distance to the cutting line. If the tape protrudes accordingly over the running outer surface of the counter knife device 1 and / or the outer surface of the drive and tensioning body, the pressure and transport of the printed products P B , P b can be improved further on account of the rubber-elastic property of the belts and the influence on the coefficient of friction.
If necessary, the guide groove 1/4 provided for the belt run can also be obtained by means of flanged toothed belt pulleys in order to design the drive with a positive fit. The translation of the toothed belt pulleys is selected so that the intended advance is achieved.
In some cases, additional apostrophes have been introduced to better distinguish between the top and bottom offset arrangement of the circular knives 2.
The circular knives 2 are fastened to drive and clamping bodies 2/1, which are mounted on the ends of pivotable and clampable brackets 2/2. The brackets 2/2 'of the circular knife 2', which make one side of the cutout and therefore show the same orientation, are connected via an upper rod 2/3 '; the brackets 2/2 "for the offset circular knives 2", which make the other side of the cut-out, are correspondingly arranged on a lower rod 2/3 ". The upper and lower rods 2/3 ', 2/3''in turn extend between the frame walls, not shown.
Each circular knife 2 is thus individually suspended and can be individually adjusted both laterally in adaptation to the cutting distances and with respect to the penetration depth into the cutting groove formed by the groove rings 1/1. This also results in practical handling for readjustment in the event of wear. The exact adjustment the penetration depth is carried out with the adjustment drive 2/4 shown in FIG. 1. Due to the individual suspension of the circular knife 2, each circular knife requires 2 individual drives. For this purpose, a band engages in a toothed belt pulley integrated in the drive and tensioning body 2/1.
After the tapes run on both sides of a cut-out, so take it formally between them and the number of tapes within a tape set of the lower and the upper tape line 4.5 is 1 higher than the number of cut-outs, one is at the top and one at the bottom external drive and tensioning body 2/1 without circular knife 2 and only arranged for guiding a band.
Fig. 2 shows again clearly that the rolling outer surfaces of the counter knife device 1 and the drive and tensioning bodies 2/1 coming into contact with the scale flow run at a peripheral speed which is equal to the speed of the outer fiber of the bands of the lower and upper band lines 4 , 5 is. The cutting edges run faster because of their larger diameter. The present exemplary embodiment results systematically with 4 pairs of circular knives 2, each with a set of circular knives 2 ', 2'', on the upper and lower rods 2/3', 2/3 '' for actuating one or the other side of the Cutouts, 4 pairs of grooved rings 1/1, 5 pairs of drive and clamping bodies 2/1 and five intermediate rings 1/2, four cutouts. According to this system, any variants of the cutting device can be derived in terms of the number of cutouts to be made and on the basis of the intermediate rings in terms of the cutting distances. If one, for example the upper or lower arrangement of circular knives 2 is dispensed with, instead of cutting out, so-called cut-through or separating cuts are also possible. Of course there is no chip.
1
Counter knife device
1/1
Grooved rings
1/2
Intermediate rings
1/3
Counter knife device shaft
1/4
Guide groove
1/5
Cover ring
2nd
Circular knife
2/1
Drive and clamping body for circular knives
2/2
Holder for circular knives
3rd
Deflection drum
4th
lower ribbon cable
5
upper ribbon line
6.7
Deflection rollers
8th
Belt roller with output of the lower belt line
9
Belt roller with drive of the upper belt line
10th
Feed belt for the printed products in the form of scales
11
Conveyor belt for the removal of the trimmed printed products in scale form

Claims (4)

  1. Apparatus for continuously trimming the longitudinal edge of overlapping printed products (PB, Pb), having leading circular blades (2) which are suspended individually, are driven and enter into cutting grooves of associated counter-blades (1/1), and in each case a first blade of which cuts one side and a second blade of which cuts the other side of a cutout, said second blade being offset laterally and in the flow direction relative to the first blade, and having a belt guiding system (4, 5) which serves for pressing the printed products on in the cutting zone and conveying said printed products (PB, Pb) and which consists of a bottom and a top belt guide (4; 5), and having a feed and a discharge device (10; 11), it being possible to feed portions (PB), which arrive from an output of a folding machine of a printing press and are provided with a plurality of successive copies (Pb), to the feed device (10, E) via 90° rotation, that is to say with the cutting lines lying firstly transversely and then parallel to the direction of transport, characterised in that groove rings (1/1), which are spaced apart at the width of a cut-out strip, as counter-blades with a common axle (1/3) form a drum-shaped counter-blade apparatus (1) for simultaneous transfer of the printed products during the longitudinal trimming from the feed device (10, E) to the discharge device (11, A), which is arranged at a different height, in that the first and the second circular blades (2',2'') are arranged on the circumference of the counter-blade apparatus (1) offset in height relative to each other, and in that guide grooves (1/4) are let into the counter-blade apparatus (1) on both sides of the cutout next to the groove rings (1/1), in which guide grooves the bottom belt guide (4) runs which conveys the products (PB, Pb), together with the top belt guide (5), from the intake gap (E) to the output gap (A) situated therebelow.
  2. Apparatus according to Claim 1, characterised in that the counter-blade apparatus (1) consists of intermediate rings (1/2) which can be clamped and displaced on a shaft (1/3), which intermediate rings have the guide grooves (1/4) and onto which the groove rings (1/1) are flanged.
  3. Apparatus according to Claim 1, characterised in that the bottom and/or top belt guide 4, 5 projects slightly over the outside diameter of the counter-blade apparatus (1) and/or the drive and tension body (2/1).
  4. Apparatus according to Claim 1, characterised in that the belts of the bottom and top belt guides (4, 5) are toothed belts which run on pulleys within the intermediate rings (1/2) and the drive and tension body (2/1).
EP86108977A 1985-07-09 1986-07-02 Apparatus for continuously trimming a feed of overlapping printed products Expired - Lifetime EP0208244B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86108977T ATE70762T1 (en) 1985-07-09 1986-07-02 DEVICE FOR CONTINUOUS LENGTH CUTTING OF SHEET-SHAPED PRINTED PRODUCTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853524512 DE3524512A1 (en) 1985-07-09 1985-07-09 DEVICE FOR CONTINUOUS LONG-EDGE CUTTING OF ROD-SHAPED PRINTED PRODUCTS
DE3524512 1985-07-09

Publications (3)

Publication Number Publication Date
EP0208244A2 EP0208244A2 (en) 1987-01-14
EP0208244A3 EP0208244A3 (en) 1988-09-28
EP0208244B1 true EP0208244B1 (en) 1991-12-27

Family

ID=6275331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108977A Expired - Lifetime EP0208244B1 (en) 1985-07-09 1986-07-02 Apparatus for continuously trimming a feed of overlapping printed products

Country Status (3)

Country Link
EP (1) EP0208244B1 (en)
AT (1) ATE70762T1 (en)
DE (1) DE3524512A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3834571A1 (en) * 1988-10-11 1990-04-12 Monforts Gmbh & Co A DEVICE FOR CUTTING THE STRIPS OF TEXTILE SHEETS
DE3916076C1 (en) * 1989-05-17 1990-11-15 Adolf 8037 Olching De Weingartner Continuous longitudinal cutter for overlapping printed prods. - has top belt guide of mutually tangentially offset conveyor sections, with gap between two circular blades
DE3931158A1 (en) * 1989-09-19 1991-03-28 Roland Man Druckmasch DEVICE FOR THE THREE-SIDED CUTTING OF PRINT EXPLARES
CH681363A5 (en) * 1990-04-02 1993-03-15 Grapha Holding Ag
CA2102013A1 (en) * 1992-11-06 1994-05-07 Blake Schlaeppi Easy open package, film and method of construction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641235C (en) * 1935-03-23 1937-01-25 Goebel A G Device for longitudinal cutting of webs of paper, cardboard, metal, cell horn or the like.
US2292723A (en) * 1941-12-10 1942-08-11 Cameron Machine Co Web severing mechanism
DE1077051B (en) * 1957-03-22 1960-03-03 Kampf Maschf Erwin Knife shaft for roll cutting machines, especially for cutting paper webs. like
DE2514837C2 (en) * 1975-04-04 1985-01-31 Maschinenbau Oppenweiler Gmbh, 7155 Oppenweiler Device for cutting flat, flexible objects with a circular knife
DE7640062U1 (en) * 1976-12-22 1978-09-14 Koenig & Bauer Ag, 8700 Wuerzburg DEVICE FOR TRIMMING FOLDED SIGNATURES
DE3022772A1 (en) * 1980-06-18 1982-01-07 Andreas Neumann Printed matter trimming device - has sets of rotary cutting blades working together with sheet-clamping conveyor belts
DE8401628U1 (en) * 1984-01-20 1984-09-13 Gämmerler, Hagen, 8021 Icking DEVICE FOR CONTINUOUSLY SEPARATING LEAF-SHAPED PRODUCTS

Also Published As

Publication number Publication date
ATE70762T1 (en) 1992-01-15
EP0208244A3 (en) 1988-09-28
DE3524512C2 (en) 1987-08-06
EP0208244A2 (en) 1987-01-14
DE3524512A1 (en) 1987-01-22

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