EP1498265B1 - Device for separating cut sheets in the delivery device of a printing machine - Google Patents

Device for separating cut sheets in the delivery device of a printing machine Download PDF

Info

Publication number
EP1498265B1
EP1498265B1 EP20040016390 EP04016390A EP1498265B1 EP 1498265 B1 EP1498265 B1 EP 1498265B1 EP 20040016390 EP20040016390 EP 20040016390 EP 04016390 A EP04016390 A EP 04016390A EP 1498265 B1 EP1498265 B1 EP 1498265B1
Authority
EP
European Patent Office
Prior art keywords
conveying path
sheet
printing machine
cutting
delivery means
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 - Fee Related
Application number
EP20040016390
Other languages
German (de)
French (fr)
Other versions
EP1498265A1 (en
Inventor
Hans Zimmermann
Jürgen Nürnberger
Olaf Schinkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1498265A1 publication Critical patent/EP1498265A1/en
Application granted granted Critical
Publication of EP1498265B1 publication Critical patent/EP1498265B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/54Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56Folding or cutting
    • B41F13/58Folding or cutting lengthwise

Definitions

  • the present invention relates to a boom of a sheet processing machine with a device for cutting cut sheets, according to the preamble of claim 1.
  • the from the DE 197 20 742 A1 known device has a separating blade with a cutting throat, which is fixedly arranged in the region of the delivery pile.
  • the Separating blade extends vertically and separates the residual fibers of the incoming with the leading edge in the cutting throat arc.
  • the disadvantage of this is that the leading edges of the sheets are damaged in the cutting throat, when the gripper carriage to transport the partial sheet such that its cutting line has a lateral offset to the cutting blade.
  • An exact start of the gripper carriage can not be ensured due to the system, since the gripper carriage must have an axial clearance for trouble-free circulation, taking into account the thermal expansion due to the temperature fluctuations occurring.
  • Another disadvantage is that the residual fibers spaced from the pre-edge are not separated in the middle and rear portions of the sheets.
  • the invention has for its object to provide a device in the boom of a sheet-processing machine, avoiding the aforementioned disadvantages, which allows reliable separation of the cut, interconnected only by residual fibers arc over the entire arc length and avoids damage to the sheet edge.
  • the separating edge is formed with a start-up area close to the conveying path and a cutting area spaced from the conveying path. In the start-up area, run-up residual fibers are deflected and torn and cut in the cutting area.
  • the sheets run during transport to the delivery pile on the cutting edge.
  • the separating edge of the separating knife acts essentially perpendicular to the conveying path on the residual fibers or the arc, which is why the leading edge of the sheet is only slightly stressed.
  • the deflection of the residual fibers is comparatively slow and depends on the rotational speed of the conveyor system and the angle at which the separating edge runs obliquely to the conveying path. This is transverse in the plane of the conveying path For the conveying direction acting on the fibers forces comparatively low and the fiber structure of the arc in the immediate vicinity of the cutting line is not damaged.
  • the sheet guiding device is designed as a suction roll or as an apertured sheet guide plate and works in a conventional manner with suction.
  • the sheet guiding device is formed from a sheet guide plate arranged below the conveying path and a blowing device arranged above the conveying path. The applied suction air or the blowing air generated by the blowing device prevents lifting of the sheet from the sheet guiding device, so that the residual fibers in the region of the sheet center and - trailing edge are reliably separated.
  • Another advantage of the solution according to the invention is that the storage of the sheet is not affected by the separation of the residual fibers.
  • Another refinement of the invention provides for the separating edge to be formed with a start-up region close to the conveying path, which deflects and tears open residual fibers, and forms a cutting region adjoining the latter, which cuts the remaining fibers apart.
  • the starting area is formed with a rounded and thus blunt edge and separates the residual fibers in the immediate vicinity of the leading edge of the sheet. He acts in the manner of a guide and aligns the possibly offset starting arc such that the cutting edge formed with a sharp edge cleanly separates the spaced from the leading edge of the sheet residual fibers without damaging the bow.
  • the separating knife is followed by a separating plate which extends vertically in the stacking region of the delivery arm between the resulting stacks and on which the sheets deposited on separate stacks are aligned under the action of straight stoppers.
  • the separating edge in the starting region in the conveying direction is inclined to the conveying path rising and formed inclined in the cutting area against the conveying direction obliquely to the conveying path.
  • the separating edge is inclined at an angle of less than 15 degrees to the conveying path, which reduces the load on the fiber structure in the region of the cutting edge to a minimum.
  • the in Fig. 1 boom shown schematically comprises a conveyor system which is designed as a chain conveyor and paired sprockets 1, 2, on the gripper carriage 14 carrying chains circulate.
  • the gripper carriage 14 take over the printed and / or painted sheet 12 from the last sheet-guiding cylinder 15 of the printing machine, wherein the leading edge of the sheet 12 is fixed with a gripper system 17 and transport it in a conveying direction 13 to a stacking area where the sheet 12 are released and deposited on each other form the delivery pile 5. Up to their release, the leading edges of the sheet 12 move along a conveying path 13.
  • One of the sheet-guiding cylinder 15 of the printing machine is associated with a not shown, mechanically operating cutting device, which is formed in a known manner.
  • the cutting device cuts the sheets 12 supplied to it in the conveying direction 13 along a cutting line, so that ideally completely separate sheets 12 or normally slightly worn or not ideally adjusted cutting tool caused by residual fibers interconnected sheets smaller formats, which are transported side by side to the delivery pile.
  • a separating knife 8 is arranged, which has a separating edge 9 which extends in the conveying direction 13 at an angle to the conveying path rising and extending into the conveying path.
  • three possible installation locations for the separating knife 8 are shown, which can be aligned with respect to the cutting line.
  • a sheet guiding device formed from sheet guide plates 7 is arranged, which guides the sheets 12.
  • the sheet guiding device has in the region of the separating knife 8 openings which can be acted upon by suction air 16, which holds the sheet 12 even at high transport speeds on the sheet guiding device.
  • the illustrated sheet guiding device is formed continuously, for the application of the invention, it is sufficient if only in the immediate vicinity of the separating knife 8, a sheet 12 leading sheet guiding device is provided.
  • a suction roller 6 serving to decelerate the sheet 12 is provided as a sheet guiding device.
  • the sheet guide can also be effected with blown air, which is generated by a blowing device, not shown, arranged above the conveying path and acts on the sheet 12 from above.
  • the separating edge 9 has a starting region 10 which is close to the conveying path and a cutting region 11 which adjoins it in the conveying direction 13 and is spaced from the conveying path.
  • the areas differ with regard to the geometry of the separating edge 9.
  • the separating edge 9 is blunt in the manner of a folding blade so that the residual fibers accumulate in the region of the front edge of the sheets 12 as if on an inclined plane, vertical as in FIG Fig. 2 be represented, deflected and tear.
  • the separating edge 9 is formed like the cutting edge of a cutting tool, so that the running against the cutting area 11 of the separating edge 9, spaced from the leading edge residual fibers are cut clean.
  • the starting area 10 only the residual fibers in the vicinity of the leading edge of the sheet 12 and the cutting area 11 separates only the spaced apart from the leading edge residual fibers, is achieved in that the starting area 10 extends into the conveying path, the trajectory of the leading edge of the sheet 12th corresponds and the Cutting area 11 is arranged in the web, in which the sheet guide the middle and the rear portion of the sheet 12 leads.
  • the separating edge 9 extends in the cutting area 11 according to Fig. 3 in the same direction as in the starting area 10 obliquely to the conveying path. According to another embodiment according to Fig. 4 is provided, the separating edge 9 in the start-up region 11 in the conveying direction 13 rising and forming sloping in the cutting region 11 in the conveying direction 13.
  • the angle that the separating edge 9 has with respect to the conveying path is preferably different in different sections of the starting region 10.
  • the operation of the device according to the invention is the following.
  • the guided by the gripper system 17 front sheet area runs on the approach area 10 of the separating edge 9 and is deformed into the gripper system 17, while the residual fibers are torn, the sheet 12 is completely divided.
  • the subsequent curved area is divided by vacuum next to the separating knife 8 drawn on the sheet brake or sheet guide plate and / or pressed by blowing air and separated from the cutting area 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Description

Die vorliegende Erfindung bezieht sich auf einen Ausleger einer bogenverarbeitenden Maschine mit einer Einrichtung zum Trennen von geschnittenen Bogen, gemäß dem Oberbegriff von Patentanspruch 1.The present invention relates to a boom of a sheet processing machine with a device for cutting cut sheets, according to the preamble of claim 1.

Es ist bekannt, zur besseren Ausnutzung von großen Bogenformaten mehrere Nutzen nebeneinander auf Bogen zu drucken und die Bogen längs mit Schneideinrichtungen zu zerteilen. Die dabei entstehenden Bogen kleineren Formates bleiben, insbesondere wenn die Schneideinrichtungen ungenau eingestellt oder deren Schneidwerkzeuge verschlissen sind, über Restfasern miteinander verbunden, was zu Störungen bei der Ablage der Bogen auf mehreren nebeneinander angeordneten Auslegerstapeln führt.It is known to print several benefits side by side on sheets and cut the sheets longitudinally with cutters for better utilization of large sheet sizes. The resulting sheet smaller format remain, especially when the cutting devices are adjusted inaccurate or their cutting tools are worn, connected to each other via residual fibers, resulting in disruption in the storage of the sheet on a plurality of adjacently arranged delivery stacks.

Aus der DE 198 42 344 A1 ist bekannt, Bogen durch einen Längsschnitt entlang einer Schnittlinie in mehrere nebeneinander liegende Teilbogen zu zerschneiden und mit einer Transporteinrichtung zu mehreren nebeneinander liegenden Stapeln zu fördern. Nach der Freigabe der Teilbogen durch eine Transporteinrichtung werden die Bogen von einer Trenneinrichtung quer zur Transportrichtung auseinander bewegt, so dass zwischen ihnen ein Abstand gebildet wird und sie sich frei fallend auf den Stapeln ablegen. Die Trenneinrichtung besteht aus einer zwischen den Stapeln senkrecht verlaufenden Schiene mit parallelen Seitenflächen, wobei die Schiene an ihrem oberen Rand symmetrisch zu ihrer Mittelebene geneigte Flächen aufweist. Sind die Teilbogen noch durch Restfasern miteinander verbunden, reicht die kinetische Energie der auf den Stapel absinkenden Teilbogen zumeist nicht aus, um diese zuverlässig zu trennen. Zudem werden die fallenden Teilbogen während des Trennens nicht mehr von dem Transportsystem geführt und können sich quer zu Förderrichtung bewegen, so dass die Oberkante der Trenneinrichtung neben der Schnittlinie auf einen Teilbogen auftrifft. Das führt zu Störungen der Bogenablage.From the DE 198 42 344 A1 It is known to cut sheets by a longitudinal section along a cutting line in several adjacent sub-arc and to promote with a transport device to several adjacent stacks. After the release of the partial sheet by a transport device, the sheets are moved apart by a separating device transversely to the transport direction, so that between them a distance is formed and they drop freely falling on the stacks. The separating device consists of a vertically extending between the stacks rail with parallel side surfaces, wherein the rail has at its upper edge symmetrically to their center plane inclined surfaces. If the partial sheets are still connected to one another by residual fibers, the kinetic energy of the partial sheets falling on the stack is generally insufficient to reliably separate them. In addition, during the separation, the falling partial sheets are no longer guided by the transport system and can move transversely to the conveying direction so that the upper edge of the separating device strikes a partial arc next to the cutting line. This leads to disruption of the sheet storage.

Die aus der DE 197 20 742 A1 bekannte Einrichtung weist ein Trennschwert mit einer Schneidkehle auf, das fest im Bereich des Auslegerstapels angeordnet ist. Das Trennschwert erstreckt sich vertikal und trennt die Restfasern der mit der Vorderkante in die Schneidkehle einlaufenden Bogen. Nachteilig ist hieran, dass die Vorderkanten der Bogen in der Schneidkehle beschädigt werden, wenn die Greiferwagen die Teilbogen derart transportieren, dass deren Schnittlinie einen seitlichen Versatz zum Trennschwert aufweist. Ein exaktes Anlaufen der Greiferwagen kann systembedingt nicht sichergestellt werden, da die Greiferwagen für den störungsfreien Umlauf unter der Berücksichtigung der Wärmedehnung auf Grund der auftretenden Temperaturschwankungen ein axiales Spiel aufweisen müssen.The from the DE 197 20 742 A1 known device has a separating blade with a cutting throat, which is fixedly arranged in the region of the delivery pile. The Separating blade extends vertically and separates the residual fibers of the incoming with the leading edge in the cutting throat arc. The disadvantage of this is that the leading edges of the sheets are damaged in the cutting throat, when the gripper carriage to transport the partial sheet such that its cutting line has a lateral offset to the cutting blade. An exact start of the gripper carriage can not be ensured due to the system, since the gripper carriage must have an axial clearance for trouble-free circulation, taking into account the thermal expansion due to the temperature fluctuations occurring.

Ein weiterer Nachteil besteht darin, dass die von der Vorkante beabstandeten Restfasern in den mittleren und hinteren Abschnitten der Bogen nicht getrennt werden.Another disadvantage is that the residual fibers spaced from the pre-edge are not separated in the middle and rear portions of the sheets.

Der Erfindung liegt die Aufgabe zugrunde, unter Vermeidung der vorgenannten Nachteile eine Einrichtung im Ausleger einer bogenverarbeitenden Maschine zu schaffen, die eine zuverlässige Trennung der geschnittenen, lediglich durch Restfasern miteinander verbundenen Bogen über die gesamte Bogenlänge ermöglicht und Beschädigungen der Bogenkante vermeidet.The invention has for its object to provide a device in the boom of a sheet-processing machine, avoiding the aforementioned disadvantages, which allows reliable separation of the cut, interconnected only by residual fibers arc over the entire arc length and avoids damage to the sheet edge.

Die Aufgabe wird durch die Lehre von Patentanspruch 1 dadurch gelöst, dass die Trennkante mit einem dem Förderweg nahen Anlaufbereich und einem vom Förderweg beabstandeten Schneidbereich ausgebildet ist. Im Anlaufbereich werden auflaufende Restfasern ausgelenkt und zerrissen und im Schneidbereich zerschnitten.The object is achieved by the teaching of claim 1, characterized in that the separating edge is formed with a start-up area close to the conveying path and a cutting area spaced from the conveying path. In the start-up area, run-up residual fibers are deflected and torn and cut in the cutting area.

Die Bogen laufen während des Transports zum Auslegerstapel auf die Trennkante auf. Dadurch werden die Restfasern mit zunehmender Nähe zum Auslegerstapel mehr und mehr ausgelenkt, bis sie zerreißen. Die Trennkante des Trennmessers wirkt dabei im Wesentlichen senkrecht zum Förderweg auf die Restfasern bzw. die Bogen ein, weswegen die Vorderkante der Bogen nur gering beansprucht wird. Die Auslenkung der Restfasern erfolgt vergleichsweise langsam und ist abhängig von der Umlaufgeschwindigkeit des Fördersystems und dem Winkel, in dem die Trennkante schräg zum Förderweg verläuft. Damit sind die in der Ebene des Förderweges quer zur Förderrichtung auf die Fasern wirkenden Kräfte vergleichsweise gering und das Fasergefüge der Bogen in unmittelbarer Nähe der Schnittlinie wird nicht beschädigt.The sheets run during transport to the delivery pile on the cutting edge. As a result, the residual fibers are deflected more and more with increasing proximity to the delivery pile until they break. The separating edge of the separating knife acts essentially perpendicular to the conveying path on the residual fibers or the arc, which is why the leading edge of the sheet is only slightly stressed. The deflection of the residual fibers is comparatively slow and depends on the rotational speed of the conveyor system and the angle at which the separating edge runs obliquely to the conveying path. This is transverse in the plane of the conveying path For the conveying direction acting on the fibers forces comparatively low and the fiber structure of the arc in the immediate vicinity of the cutting line is not damaged.

Die Bogenleiteinrichtung ist als Saugwalze oder als mit Öffnungen versehenes Bogenleitblech ausgebildet und arbeitet in an sich bekannter Weise mit Saugluft. Nach einer anderen Ausbildung der Erfindung ist die Bogenleiteinrichtung aus einem unterhalb des Förderweges angeordneten Bogenleitblech und einer oberhalb des Förderweges angeordneten Blaseinrichtung gebildet. Die anliegende Saugluft bzw. die von der Blaseinrichtung erzeugte Blasluft verhindert ein Abheben der Bogen von der Bogenleiteinrichtung, so dass auch die Restfasern im Bereich der Bogenmitte und - hinterkante zuverlässig getrennt werden.The sheet guiding device is designed as a suction roll or as an apertured sheet guide plate and works in a conventional manner with suction. According to another embodiment of the invention, the sheet guiding device is formed from a sheet guide plate arranged below the conveying path and a blowing device arranged above the conveying path. The applied suction air or the blowing air generated by the blowing device prevents lifting of the sheet from the sheet guiding device, so that the residual fibers in the region of the sheet center and - trailing edge are reliably separated.

Ein weiterer Vorteil der erfindungsgemäßen Lösung besteht darin, dass die Ablage der Bogen von dem Trennen der Restfasern nicht beeinträchtigt wird.Another advantage of the solution according to the invention is that the storage of the sheet is not affected by the separation of the residual fibers.

Eine andere Weiterbildung der Erfindung sieht vor, die Trennkante mit einem dem Förderweg nahen Anlaufbereich, der auflaufende Restfasern auslenkt und zerreißt, und einem sich an diesen anschließenden, vom Förderweg beabstandeten Schneidbereich auszubilden, der die Restfasern zerschneidet. Der Anlaufbereich ist mit einer abgerundeten und somit stumpfen Kante ausgebildet und trennt die Restfasern in unmittelbarer Nähe der Vorderkante der Bogen. Dabei wirkt er in Art einer Führung und richtet die gegebenenfalls versetzt anlaufenden Bogen derart aus, dass der mit einer scharfen Kante ausgebildet Schneidbereich die von der Vorderkante der Bogen beabstandeten Restfasern sauber trennt, ohne die Bogen zu beschädigen.Another refinement of the invention provides for the separating edge to be formed with a start-up region close to the conveying path, which deflects and tears open residual fibers, and forms a cutting region adjoining the latter, which cuts the remaining fibers apart. The starting area is formed with a rounded and thus blunt edge and separates the residual fibers in the immediate vicinity of the leading edge of the sheet. He acts in the manner of a guide and aligns the possibly offset starting arc such that the cutting edge formed with a sharp edge cleanly separates the spaced from the leading edge of the sheet residual fibers without damaging the bow.

An das Trennmesser schließt sich nach einer Ausführung der Erfindung eine Trennplatte an, die sich im Stapelbildungsbereich des Auslegers vertikal zwischen den entstehenden Stapeln erstreckt und an der die auf getrennten Stapeln abgelegten Bogen unter der Wirkung von Geradstoßern ausgerichtet werden.According to an embodiment of the invention, the separating knife is followed by a separating plate which extends vertically in the stacking region of the delivery arm between the resulting stacks and on which the sheets deposited on separate stacks are aligned under the action of straight stoppers.

Nach einer weiteren Weiterbildung der Erfindung ist die Trennkante im Anlaufbereich in Förderrichtung schräg zum Förderweg ansteigend und im Schneidbereich gegen die Förderrichtung schräg zum Förderweg ansteigend ausgebildet.According to a further development of the invention, the separating edge in the starting region in the conveying direction is inclined to the conveying path rising and formed inclined in the cutting area against the conveying direction obliquely to the conveying path.

Nach einer anderen Weiterbildung der Erfindung verläuft die Trennkante in einem Winkel kleiner 15 Grad schräg zum Förderweg, was die Belastung des Fasergefüges im Bereich der Schnittkante auf ein Minimum reduziert.According to another embodiment of the invention, the separating edge is inclined at an angle of less than 15 degrees to the conveying path, which reduces the load on the fiber structure in the region of the cutting edge to a minimum.

Nachfolgend soll die Erfindung anhand eines Ausführungsbeispiels beschrieben werden.The invention will be described with reference to an embodiment.

In den dazugehörigen Zeichnungen zeigt

Fig. 1
eine schematisierte Seitenansicht des Auslegers mit der erfindungsgemäßen Einrichtung zum Trennen von Restfasern,
Fig. 2
eine schematische Darstellung eines Greiferwagens mit Greifersystem in Förderrichtung betrachtet,
Fig. 3
das Trennmesser mit einem in Förderrichtung zum Förderweg ansteigenden Schneidbereich und
Fig. 4
das Trennmesser mit einem entgegen der Förderrichtung zum Förderweg ansteigenden Schneidbereich.
In the accompanying drawings shows
Fig. 1
a schematic side view of the boom with the inventive device for separating residual fibers,
Fig. 2
a schematic representation of a gripper carriage with gripper system viewed in the conveying direction,
Fig. 3
the separating knife with a rising in the conveying direction to the conveying cutting area and
Fig. 4
the separating knife with a counter to the conveying direction to the conveying path rising cutting area.

Der in Fig. 1 schematisch dargestellte Ausleger umfasst ein Fördersystem, das als Kettenförderer ausgebildet ist und paarweise angeordnete Kettenräder 1, 2 aufweist, über die Greiferwagen 14 tragende Ketten umlaufen. Die Greiferwagen 14 übernehmen die bedruckten und/oder lackierten Bogen 12 vom letzten bogenführenden Zylinder 15 der Druckmaschine, wobei die Vorderkante der Bogen 12 mit einem Greifersystem 17 fixiert wird und transportieren sie in einer Förderrichtung 13 bis zu einem Stapelbereich, wo die Bogen 12 freigegeben werden und aufeinander abgelegt den Auslegerstapel 5 bilden. Bis zu ihrer Freigabe bewegen sich die Vorderkanten der Bogen 12 dabei entlang eines Förderweges 13. Einem der bogenführenden Zylinder 15 der Druckmaschine ist eine nicht dargestellte, mechanisch arbeitende Schneideinrichtung zugeordnet, die in bekannter Weise ausgebildet ist. Die Schneideinrichtung schneidet die ihr zugeführten Bogen 12 in Förderrichtung 13 entlang einer Schnittlinie, so dass im Idealfall vollständig voneinander getrennte Bogen 12 oder im Normalfall bei geringfügig abgenutztem oder nicht ideal eingestelltem Scheidwerkzeug durch Restfasern miteinander verbundene Bogen kleinerer Formate entstehen, die nebeneinanderliegend zum Auslegerstapel transportiert werden. An beliebiger Stelle entlang des Förderweges ist ein Trennmesser 8 angeordnet, das eine Trennkante 9 aufweist, die in Förderrichtung 13 schräg zum Förderweg ansteigend verläuft und sich in den Förderweg hinein erstreckt. In der Fig. 1 sind beispielhaft drei mögliche Einbauorte für das Trennmesser 8 dargestellt, das in Bezug auf die Schnittlinie ausrichtbar ist.
Unterhalb des Förderweges ist eine aus Bogenleitblechen 7 gebildete Bogenleiteinrichtung angeordnet, die die Bogen 12 führt. Die Bogenleiteinrichtung weist im Bereich des Trennmessers 8 Öffnungen auf, die mit Saugluft 16 beaufschlagbar sind, welche die Bogen 12 auch bei großen Transportgeschwindigkeiten auf der Bogenleiteinrichtung hält. Die dargestellte Bogenleiteinrichtung ist durchgängig ausgebildet, für die Anwendung der Erfindung ist es demgegenüber ausreichend, wenn nur in unmittelbarer Nähe des Trennmessers 8 eine die Bogen 12 führende Bogenleiteinrichtung vorgesehen ist. Nach einer Ausführungsform der Erfindung ist als Bogenleiteinrichtung eine dem Abbremsen der Bogen 12 dienende Saugwalze 6 vorgesehen. Alternativ zur Bogenführung mit Saugluft 16 kann die Bogenführung auch mit Blasluft bewirkt werden, welche mit einer nicht dargestellten, oberhalb des Förderweges angeordneten Blaseinrichtung erzeugt wird und von oben auf die Bogen 12 wirkt. Die Trennkante 9 weist einen dem Förderweg nahen Anlaufbereich 10 und einen sich an diesen in Förderrichtung 13 anschließenden, vom Förderweg beabstandeten Schneidbereich 11 auf. Die Bereiche unterscheiden sich hinsichtlich der Geometrie der Trennkante 9. Im Anlaufbereich 10 ist die Trennkante 9 in Art eines Falzschwertes stumpf ausgebildet , so dass die Restfasern im Bereich der Vorderkante der Bogen 12 wie auf eine schiefe Ebene auflaufen, dabei vertikal, wie in Fig. 2 dargestellt, ausgelenkt werden und zerreißen.
Im Schneidbereich 11 ist die Trennkante 9 wie die Schneide eines Schneiwerkzeugs ausgebildet, so dass die gegen den Schneidbereich 11 der Trennkante 9 laufenden, von der Vorderkante beabstandeten Restfasern sauber zerschnitten werden.
Das der Anlaufbereich 10 nur die Restfasern in Nähe der Vorderkante der Bogen 12 und der Schneidbereich 11 nur die von der Vorderkante beabstandeten Restfasern trennt, wird dadurch erreicht, dass sich der Anlaufbereich 10 bis in den Förderweg hinein erstreckt, der Bahn der Vorderkante der Bogen 12 entspricht und der Schneidbereich 11 in der Bahn angeordnet ist, in der die Bogenleiteinrichtung den mittleren und den hinteren Bereich der Bogen 12 führt.
The in Fig. 1 boom shown schematically comprises a conveyor system which is designed as a chain conveyor and paired sprockets 1, 2, on the gripper carriage 14 carrying chains circulate. The gripper carriage 14 take over the printed and / or painted sheet 12 from the last sheet-guiding cylinder 15 of the printing machine, wherein the leading edge of the sheet 12 is fixed with a gripper system 17 and transport it in a conveying direction 13 to a stacking area where the sheet 12 are released and deposited on each other form the delivery pile 5. Up to their release, the leading edges of the sheet 12 move along a conveying path 13. One of the sheet-guiding cylinder 15 of the printing machine is associated with a not shown, mechanically operating cutting device, which is formed in a known manner. The cutting device cuts the sheets 12 supplied to it in the conveying direction 13 along a cutting line, so that ideally completely separate sheets 12 or normally slightly worn or not ideally adjusted cutting tool caused by residual fibers interconnected sheets smaller formats, which are transported side by side to the delivery pile. At any point along the conveying path, a separating knife 8 is arranged, which has a separating edge 9 which extends in the conveying direction 13 at an angle to the conveying path rising and extending into the conveying path. In the Fig. 1 By way of example, three possible installation locations for the separating knife 8 are shown, which can be aligned with respect to the cutting line.
Below the conveying path a sheet guiding device formed from sheet guide plates 7 is arranged, which guides the sheets 12. The sheet guiding device has in the region of the separating knife 8 openings which can be acted upon by suction air 16, which holds the sheet 12 even at high transport speeds on the sheet guiding device. The illustrated sheet guiding device is formed continuously, for the application of the invention, it is sufficient if only in the immediate vicinity of the separating knife 8, a sheet 12 leading sheet guiding device is provided. According to one embodiment of the invention, a suction roller 6 serving to decelerate the sheet 12 is provided as a sheet guiding device. As an alternative to sheet guiding with suction air 16, the sheet guide can also be effected with blown air, which is generated by a blowing device, not shown, arranged above the conveying path and acts on the sheet 12 from above. The separating edge 9 has a starting region 10 which is close to the conveying path and a cutting region 11 which adjoins it in the conveying direction 13 and is spaced from the conveying path. The areas differ with regard to the geometry of the separating edge 9. In the starting area 10, the separating edge 9 is blunt in the manner of a folding blade so that the residual fibers accumulate in the region of the front edge of the sheets 12 as if on an inclined plane, vertical as in FIG Fig. 2 be represented, deflected and tear.
In the cutting area 11, the separating edge 9 is formed like the cutting edge of a cutting tool, so that the running against the cutting area 11 of the separating edge 9, spaced from the leading edge residual fibers are cut clean.
That the starting area 10 only the residual fibers in the vicinity of the leading edge of the sheet 12 and the cutting area 11 separates only the spaced apart from the leading edge residual fibers, is achieved in that the starting area 10 extends into the conveying path, the trajectory of the leading edge of the sheet 12th corresponds and the Cutting area 11 is arranged in the web, in which the sheet guide the middle and the rear portion of the sheet 12 leads.

Die Trennkante 9 verläuft im Schneidbereich 11 gemäß Fig. 3 in derselben Richtung wie im Anlaufbereich 10 schräg zum Förderweg. Nach einer anderen Ausführungsform gemäß Fig. 4 ist vorgesehen, die Trennkante 9 im Anlaufbereich11 in Förderrichtung 13 ansteigend und im Schneidbereich 11 in Förderrichtung 13 abfallend auszubilden.
Der Winkel, den die Trennkante 9 in Bezug auf den Förderweg aufweist, ist in verschiedenen Abschnitten des Anlaufbereichs 10 vorzugsweise unterschiedlich groß.
Die Wirkungsweise der erfindungsgemäßen Einrichtung ist folgende.
Der vom Greifersystem 17 geführte vordere Bogenbereich läuft auf den Anlaufbereich 10 der Trennkante 9 auf und wird in das Greifersystem 17 hinein verformt, dabei werden die Restfasern zerrissen, der Bogen 12 ist vollständig geteilt. Der nachfolgende Bogenbereich wird mittels Unterdruck geteilt neben dem Trennmesser 8 auf die Bogenbremse bzw. das Bogenleitblech gezogen und/oder mittels Blasluft gedrückt und von dem Schneidbereich 11 getrennt.
The separating edge 9 extends in the cutting area 11 according to Fig. 3 in the same direction as in the starting area 10 obliquely to the conveying path. According to another embodiment according to Fig. 4 is provided, the separating edge 9 in the start-up region 11 in the conveying direction 13 rising and forming sloping in the cutting region 11 in the conveying direction 13.
The angle that the separating edge 9 has with respect to the conveying path is preferably different in different sections of the starting region 10.
The operation of the device according to the invention is the following.
The guided by the gripper system 17 front sheet area runs on the approach area 10 of the separating edge 9 and is deformed into the gripper system 17, while the residual fibers are torn, the sheet 12 is completely divided. The subsequent curved area is divided by vacuum next to the separating knife 8 drawn on the sheet brake or sheet guide plate and / or pressed by blowing air and separated from the cutting area 11.

BezugszeichenaufstellungREFERENCE NUMBERS

1,21.2
KettenradSprocket
33
KetteChain
55
Auslegerstapeldelivery pile
66
Saugwalzesuction roll
77
Bogenleitblechsheet guide plate
88th
Trennmesserseparating knife
99
Trennkanteseparating edge
1010
Anlaufbereichstart-up range
1111
Schneidbereichcutting area
1212
Bogenbow
1313
Förderrichtungconveying direction
1414
Greiferwagengripper carriages
1515
bogenführender Zylindersheet-guiding cylinder
1616
Saugluftsuction
1717
Greifersystemgripper system

Claims (9)

  1. Delivery means of a printing machine with equipment which separates sheets (12) longitudinally cut by an upstream cutting device and connected together merely by residual fibres, which sheets are transported by an endless encircling conveyor system until their release above a delivery stack (5), wherein the front edges of the sheets (12) move in a conveyor device (13) along a conveying path, wherein the equipment comprises a stationary cutting knife (8) with a cutting edge (9) running at an inclination to the conveying path and extending thereinto, wherein a sheet guide device (7) is associated with the separating knife and guides the sections, which are spaced from the sheet front edge, of the respective sheet (12) into the region of the cutting edge (9), characterised in that the cutting edge (9) has an entry region (10) facing the conveying path in that it is constructed in such a manner that it deflects and severs impinging residual fibres in the vicinity of the sheet front edge and has a cutting region (11) connected therewith and spaced from the conveying path in that the cutting edge (9) is so constructed that it severs the residual fibres spaced from the sheet front edge.
  2. Delivery means of a printing machine with equipment according to claim 1, characterised in that the cutting edge (9) runs so as to rise in the conveying direction (13) with respect to the conveying path.
  3. Delivery means of a printing machine with equipment according to claim 1, characterised in that the cutting edge (9) is constructed in the entry region (10) so as to rise in the conveying direction (13) at an inclination with respect to the conveying path and in the cutting region (11) to rise against the conveying direction (13) at an inclination to the conveying path.
  4. Delivery means of a printing machine with equipment according to claim 1, characterised in that the sheet guide device is arranged below the conveying path and has openings able to be acted on by suction air (16).
  5. Delivery means of a printing machine with equipment according to claim 1, characterised in that the sheet guide device is formed from a sheet guide plate (7) arranged below the conveying path and a blowing device arranged above the conveying path.
  6. Delivery means of a printing machine with equipment according to claim 1, characterised in that a suction roller (6) is provided as sheet guide device.
  7. Delivery means of a printing machine with equipment according to any one of the preceding claims, characterised in that the cutting knife (8) is arranged directly in front of the delivery stack in conveying direction (13).
  8. Delivery means of a printing machine with equipment according to any one of the preceding claims, characterised in that a vertically extending separating plate, which is connected in conveying direction (13) with the separating knife (8), is provided in the stack-forming region of the delivery means.
  9. Delivery means of a printing machine with equipment according to any one of the preceding claims, characterised in that the cutting edge (9) runs at an inclination with respect to the conveying path at an angle of less than 15 degrees.
EP20040016390 2003-07-18 2004-07-13 Device for separating cut sheets in the delivery device of a printing machine Expired - Fee Related EP1498265B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003132671 DE10332671B4 (en) 2003-07-18 2003-07-18 Device for cutting cut sheets in the delivery of a printing machine
DE10332671 2003-07-18

Publications (2)

Publication Number Publication Date
EP1498265A1 EP1498265A1 (en) 2005-01-19
EP1498265B1 true EP1498265B1 (en) 2011-05-11

Family

ID=33461985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040016390 Expired - Fee Related EP1498265B1 (en) 2003-07-18 2004-07-13 Device for separating cut sheets in the delivery device of a printing machine

Country Status (2)

Country Link
EP (1) EP1498265B1 (en)
DE (1) DE10332671B4 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008005775A1 (en) 2008-01-24 2009-07-30 Koenig & Bauer Aktiengesellschaft Printed sheet cutting method for rotary printing press, involves feeding device pressing circular knife from original position to working position at sheet-guiding cylinder with cutting support, and another knife arranged at knife holder
DE102008053760B4 (en) * 2008-10-29 2021-09-02 manroland sheetfed GmbH Printing or coating machine with a device for longitudinal cutting of sheet material
DE202008016937U1 (en) 2008-12-23 2009-05-28 Manroland Ag Paper cutter
DE102010039504B4 (en) * 2010-08-19 2020-11-05 manroland sheetfed GmbH Processing machine with a longitudinal cutting device for sheet material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268111A (en) * 1939-06-26 1941-12-30 John A Davidson Slitter and the like for sheet feeding presses
DD125394A1 (en) * 1976-02-27 1977-04-20
DE19720742C2 (en) * 1997-05-17 2002-10-10 Koenig & Bauer Ag Installation in sheet arms
DE19842344C2 (en) * 1998-09-16 2000-08-10 Roland Man Druckmasch Method of transporting sheets and sheet processing machine operating according to the method
DE10106670B4 (en) * 2001-02-14 2004-01-29 Koenig & Bauer Ag Superstructure for a folder and method for feeding a plurality of starting material webs

Also Published As

Publication number Publication date
DE10332671A1 (en) 2005-02-17
EP1498265A1 (en) 2005-01-19
DE10332671B4 (en) 2007-12-20

Similar Documents

Publication Publication Date Title
EP0986478B1 (en) Method for threading a partial paper web
DE2518373C2 (en) Device for equalizing the mutual distances between printed products following one another in an imbricated flow
EP0073388B1 (en) Device for changing the direction of transport of letters and similar rectangular articles
EP0722415B1 (en) Process and device for forming and moving stacks of printed sheets
EP2277812B1 (en) Method for lateral alignment of products with level base, in particular printed products and transport device for carrying out the method
DE102006027124A1 (en) Sheet punching and embossing machine, has ejector station for ejecting girpper edge from gripper and contains blower, which impinges air flow at gripper edge, and gripper carriage led in circular path across conveyor
EP1880960A2 (en) Device for feeding a stream of overlapping sheets
EP1105333B1 (en) Method and device for perforating material bands
WO2021233592A1 (en) Sheet-processing machine with at least one transfer transportation system, and method for transporting sheets in a sheet-processing machine
EP2363364B1 (en) Sheet guidance device, production system for printed products with a sheet guidance device and method for producing printed products
EP1498265B1 (en) Device for separating cut sheets in the delivery device of a printing machine
EP2093175A2 (en) Device for discharging printed materials
DE102008046125A1 (en) Sheet processing machine and method for depositing sheets
DE4316400C2 (en) Device for removal of specimens removed from a flow
DE10047041A1 (en) Device and method for cutting and redirecting signatures
WO2001007349A1 (en) Method and device for the overlapping arrangement of at least two sheets
DE202008016937U1 (en) Paper cutter
EP1498374B1 (en) Device for separating cut sheets in a printing machine
EP1110894B1 (en) Method and device for folding sheets of material
EP1049643B1 (en) Machine for processing foil
WO2021233593A1 (en) Sheet processing machine and method for processing sheets in a sheet processign machine
DE102022117517A1 (en) Processing machine and method for operating a processing machine
DE102022117516A1 (en) Processing machine and method for operating a processing machine
DE102022117515A1 (en) Processing machine and method for operating a processing machine
DE102022117514A1 (en) Processing machine and method for aligning at least a partial stack or stack of sheets

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041005

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

AKX Designation fees paid

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20090604

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502004012486

Country of ref document: DE

Owner name: KOENIG & BAUER AG, DE

Free format text: FORMER OWNER: KOENIG & BAUER AG, 97080 WUERZBURG, DE

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502004012486

Country of ref document: DE

Effective date: 20110622

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20120214

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502004012486

Country of ref document: DE

Effective date: 20120214

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502004012486

Country of ref document: DE

Owner name: KOENIG & BAUER AG, DE

Free format text: FORMER OWNER: KOENIG & BAUER AKTIENGESELLSCHAFT, 97080 WUERZBURG, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20150925

Year of fee payment: 12

Ref country code: GB

Payment date: 20150723

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150727

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20150731

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004012486

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160713

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170201

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160713

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160713