EP1454744B1 - Sheet front feeder - Google Patents

Sheet front feeder Download PDF

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Publication number
EP1454744B1
EP1454744B1 EP20040002877 EP04002877A EP1454744B1 EP 1454744 B1 EP1454744 B1 EP 1454744B1 EP 20040002877 EP20040002877 EP 20040002877 EP 04002877 A EP04002877 A EP 04002877A EP 1454744 B1 EP1454744 B1 EP 1454744B1
Authority
EP
European Patent Office
Prior art keywords
drum
gap
sheet
gripper
pivot axis
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
EP20040002877
Other languages
German (de)
French (fr)
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EP1454744A1 (en
Inventor
Volkmar Schumann
Carsten Reinsch
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
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Koenig and Bauer AG
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Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1454744A1 publication Critical patent/EP1454744A1/en
Application granted granted Critical
Publication of EP1454744B1 publication Critical patent/EP1454744B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers

Definitions

  • the invention relates to a sheet system according to the preamble of the first claim.
  • Such sheet systems are well known.
  • a device for accelerated removal of an aligned on the feed table sheet known, in which serves as Abdrlindglied a rotating drum which is mounted eccentrically to the center of the gripper track and which rotates at the same rotational speed as the gripper.
  • the frame point of the sheet transport system, the frame point of the gripper system and the frame point of the printing cylinder lie on a first straight line.
  • the eccentricity of the drum is adjustable by moving the frame point of the drum on a second straight line which is perpendicular to the first straight line.
  • This device is only suitable for accelerated drawing away of a sheet, wherein the distance to the printing cylinder and the sheet transport system is changed to the same extent when changing the eccentricity of the drum.
  • this device is only suitable for such a machine configuration in which the frame points of the printing cylinder, the gripper system and the sheet transport system lie on a straight line.
  • From the US 2002/0096070 A is an adjusting device for adjusting the sheet transport cylinder of a sheet-fed rotary printing press at various substrate thicknesses known.
  • the axis of rotation of the sheet transport cylinder from a first axis position, which corresponds to a certain substrate thickness, in a second axis position, which corresponds to a different substrate thickness and is axially parallel to the first Achswolf adjusted.
  • the storage of the sheet transport cylinder is done via an adjustable eccentricity in the frame of the printing press.
  • the sheet transport cylinder is arranged between a cylinder and a counter-pressure cylinder and the adjusting device is designed so that changes the gap between the sheet transport cylinder and the cylinder as well as between the sheet transport cylinder and the impression cylinder by the same amount. Applying this type of adjustment to the sheet mentioned above, so the gap between the drum and the subsequent impression cylinder to the same extent as the gap between the path of the gripper of the vibrating gripper and the drum is changed. This can lead to collisions.
  • the object of the invention is therefore to design a sheet-fed system described above such that the gap between the drum shell and the downstream pressure cylinder it is changeable, while the gap between the drum shell and the trajectory of the gripper of the sheet transport system remains constant or approximately constant .
  • the solution according to the invention makes it possible to adapt the pressure gap between the drum casing and the jacket of a downstream printing cylinder to the material thickness of the sheet to be processed.
  • the sheets are guided so that they invest exactly on the jacket, so that a quality printing can be realized.
  • the gripper pads of the drum to circulate a circle whose diameter coincides or nearly coincides with the diameter of the drum shell, to avoid depositing the color in the back pressure.
  • Fig. 1 is a sheet system with a feed table 1, designed as a vibration system 3 sheet transport system 2, a drum 4 and a pressure cylinder 5 is shown. From the oscillating system 2, a mounted in a frame point 7 oscillator 6 is shown, in which spaced across the machine width to each other gripper tongues 8 are mounted, which correspond with gripper clutches 9.
  • the drum 4 consists of a base body 10 which is non-rotatably connected to a drum shaft 11 and which is received by means of rolling bearings 12 on both sides in machine walls 13, and a drum shell 15. Via a coupling 14 of the main body 10 is coupled to the drum shell 15.
  • the drum shell 15 is mounted on bearing plates 17 with the aid of roller bearings 16.
  • the bearing plates 17 are pivotally received by means of bearing screws 31 in the machine walls 13 about a pivot axis 18 so that an axis 19 of the drum shell 15 extends at a distance e to a rotational axis 23 of the drum shaft 11.
  • a gripper system 20 consisting of gripper fingers 21, which cooperate with gripper pads 22, is provided.
  • the gripper pads 22 describe on rotation a circle with a radius R1, while the drum shell 15 describes a circle with a radius R2.
  • the radii R1 and R2 are equal or nearly equal.
  • the drum 4 is so arranged to form the oscillating system 3 sheet transport system 2 and the impression cylinder 5, that forms a first gap A and between the drum shell 15 and the impression cylinder 5, a second gap B between the drum shell 15 and the gripper clutches 9 of the vibrating system 3.
  • the second gap B is adjustable by the bearing plates 17 can be pivoted about the pivot axis 18 by means of an adjusting device 25.
  • the end shields 17 are provided with a stop face 24, which are held by means of compression springs 26 in operative connection with a respective
  • the Adjustment eccentric 27 are arranged on a control shaft 28 which can be rotated by means of a lever 30 and fixed by a lock 29.
  • the position of the pivot axis 18 is preferably selected such that it intersects a straight line g which is cut by the axis 19 of the drum shell 15 and runs through the frame point 7. Due to the small travel paths, the second gap B has approximately a control range of 1.5 mm, it is also possible to realize this travel without changing the first gap A, when the pivot axis 18 within a bilateral of the straight line g extending Angle ⁇ is provided, wherein the angle a extends over a range of about 0 ° to 30 °. For clarity, is in Fig. 1 the position of the pivot axis 18 shown in this area.
  • the conveyed on the feed table 1 sheet between the gripper tongues 8 and the gripper clutches 9 of the oscillating system 3 are clamped and transported to the drum 4 and transferred to the gripper system 20 of the drum 4.
  • the first gap A is dimensioned such that it corresponds at least to the overall height of the gripper tongues 8 and the maximum possible material thickness of the sheets reaching the preparation.
  • the detected by the gripper system 20 sheets are transported to the printing cylinder 5 and transferred to the gripper of the printing cylinder 5, not shown.
  • the second gap B is adapted to the material thickness of the reaching for processing sheet.
  • the lock 29 is released and the control shaft 28 is rotated.
  • the bearing plates 17 are given to the pivot axis 18 and thus the drum shell 15 the printing cylinder 5 approximated or removed from this and thus set the material thickness corresponding second gap B. Due to the arrangement of the pivot axis 18 on the straight line g or in the area bounded by the angle ⁇ extending on both sides of the straight line g, the first gap A remains constant or approximately constant.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Description

Die Erfindung betrifft eine Bogenanlage nach dem Oberbegriff des 1. Anspruchs. The invention relates to a sheet system according to the preamble of the first claim.

Derartige Bogenanlagen sind allgemein bekannt. Um bei der Rückbewegung eines als Schwinggreifer ausgebildeten Bogentransportsystems zum Anlegtisch zur Übernahme eines Folgebogens eine Kollision der Greifer des Schwinggreifers mit dem Trommelmantel der Trommel und dem abziehenden Bogen zu vermeiden, ist es üblich, den Trommelmantel der Trommel mit einem Radius auszubilden, der kleiner ist als der Radius, mit dem das Greifersystem umläuft. Dabei weisen der Trommelmantel und das Greifersystem eine gleiche Drehachse auf.Such sheet systems are well known. In order to avoid a collision of the gripper of the oscillating gripper with the drum shell of the drum and the withdrawing sheet during the return movement of a formed as a swing gripper sheet feed system for feed table for taking a follower sheet, it is customary to form the drum shell of the drum with a radius which is smaller than the radius at which the gripper system rotates. In this case, the drum shell and the gripper system on a same axis of rotation.

Dieser im Radius kleiner gehaltene Trommelmantel bedingt aber einen großen Spalt zur Mantelfläche des nachgeordneten Druckzylinders, was bei dünnen Bedruckstoffen zu einem unruhigen sowie undefinierten Bogenlauf und damit zu einer nachteiligen Beeinflussung der Produktivität der Druckmaschine führt. Die unterschiedlichen Radien bewirken aber auch unterschiedliche Umfangsgeschwindigkeiten, die Ursache sind für das Ablegen von Farbe auf dem verkleinerten Trommelmantel beim Rückseitendruck.However, this smaller in the radius drum shell requires a large gap to the lateral surface of the downstream printing cylinder, resulting in thin substrates to a troubled and undefined sheet running and thus to a detrimental effect on the productivity of the printing press. But the different radii also cause different peripheral speeds, the cause of the deposition of color on the reduced drum shell in the back page.

Aus der DE 198 31 976 A1 ist es bekannt, den Schwinggreifer bei der Bewegung zurück zum Anlegtisch auf einer Bahn zu führen, die unter der Bogenführungsbahn liegt. Nachteilig ist der hohe getriebetechnische Aufwand und die Möglichkeit der Einleitung von Schwingungen, wodurch die Produktivität der Druckmaschine nachteilig beeinflusst wird. Außerdem ist es auch bei derartigen Anordnungen üblich, zwischen dem Trommelmantel und der Mantelfläche des nachgeordneten Druckzylinders einen solchen Spalt vorzusehen, der es gestattet, sämtliche zur Verarbeitung vorgesehenen Materialstärken zu verarbeiten. Dieser nach der maximalen Materialstärke ausgelegte Spalt führt aber bei der Verarbeitung dünner Bedruckstoffe zu einer Produktivitätsminderung der Druckmaschine.From the DE 198 31 976 A1 It is known to guide the swing gripper in the movement back to the feed table on a path that lies under the sheet guide path. A disadvantage is the high gearbox complexity and the possibility of introducing vibrations, whereby the productivity of the printing press is adversely affected. In addition, it is also common in such arrangements to provide such a gap between the drum shell and the lateral surface of the downstream printing cylinder, which allows to process all material thicknesses provided for processing. However, this gap designed according to the maximum material thickness leads to a reduction in productivity of the printing machine when processing thin substrates.

Weiterhin ist aus der DE 724 077 C eine Vorrichtung zum beschleunigten Wegziehen eines auf dem Anlegtisch ausgerichteten Bogens bekannt, bei der als Abdrängglied eine umlaufende Trommel dient, die exzentrisch zum Mittelpunkt der Greiferbahn gelagert ist und die mit der gleichen Drehgeschwindigkeit wie die Greifer umläuft. Der Gestellpunkt des Bogentransportsystem, der Gestellpunkt des Greifersystems und der Gestellpunkt des Druckzylinders liegen auf einer ersten Geraden. Die Exzentrizität der Trommel ist einstellbar, indem der Gestellpunkt der Trommel auf einer zweiten Geraden, die senkrecht zur ersten Geraden verläuft, verschoben wird.Furthermore, from the DE 724 077 C a device for accelerated removal of an aligned on the feed table sheet known, in which serves as Abdrängglied a rotating drum which is mounted eccentrically to the center of the gripper track and which rotates at the same rotational speed as the gripper. The frame point of the sheet transport system, the frame point of the gripper system and the frame point of the printing cylinder lie on a first straight line. The eccentricity of the drum is adjustable by moving the frame point of the drum on a second straight line which is perpendicular to the first straight line.

Diese Vorrichtung ist lediglich zum beschleunigten Wegziehen eines Bogens geeignet, wobei sich beim Verändern der Exzentrizität der Trommel der Abstand zum Druckzylinder und zum Bogentransportsystem im gleichen Maß verändert wird. Außerdem eignet sich diese Vorrichtung nur für eine solche Maschinenkonfiguration, bei der die Gestellpunkte des Druckzylinders, des Greifersystems und des Bogentransportsystems auf einer Geraden liegen.This device is only suitable for accelerated drawing away of a sheet, wherein the distance to the printing cylinder and the sheet transport system is changed to the same extent when changing the eccentricity of the drum. In addition, this device is only suitable for such a machine configuration in which the frame points of the printing cylinder, the gripper system and the sheet transport system lie on a straight line.

Aus derFrom the US 2002/0096070 AUS 2002/0096070 A ist eine Einstellvorrichtung zur Anpassung der Bogentransportzylinders einer Bogenrotationsdruckmaschine an verschiedenen Bedruckstoffdicken bekannt. Durch diese Einstellvorrichtung wird die Rotationsachse des Bogentransportzylinders aus einer ersten Achsstellung, die einer bestimmten Bedruckstoffdicke entspricht, in eine zweite Achsstellung, die einer anderen Bedruckstoffdicke entspricht und achsparallel zur ersten Achsstellung ist, verstellt. Die Lagerung des Bogentransportzylinders erfolgt hierzu über eine verstellbare Exzentrizität im Gestell der Druckmaschine. Der Bogentransportzylinder ist zwischen einem Zylinder und einem Gegendruckzylinder angeordnet und die Verstelleinrichtung ist so ausgeführt, dass der sich der Spalt sowohl zwischen Bogentransportzylinder und dem Zylinder als auch zwischen dem Bogentransportzylinder und dem Gegendruckzylinder um das gleiche Maß ändert. Wendet man diese Art der Verstellung auf die eingangs genannte Bogenanlage an, so wird der Spalt zwischen der Trommel und dem nachfolgenden Druckzylinder im gleichen Maße wie der Spalt zwischen der Bahn der Greifer des Schwinggreifers und der der Trommel verändert. Das kann zu Kollisionen führen.is an adjusting device for adjusting the sheet transport cylinder of a sheet-fed rotary printing press at various substrate thicknesses known. By this adjustment, the axis of rotation of the sheet transport cylinder from a first axis position, which corresponds to a certain substrate thickness, in a second axis position, which corresponds to a different substrate thickness and is axially parallel to the first Achsstellung adjusted. The storage of the sheet transport cylinder is done via an adjustable eccentricity in the frame of the printing press. The sheet transport cylinder is arranged between a cylinder and a counter-pressure cylinder and the adjusting device is designed so that changes the gap between the sheet transport cylinder and the cylinder as well as between the sheet transport cylinder and the impression cylinder by the same amount. Applying this type of adjustment to the sheet mentioned above, so the gap between the drum and the subsequent impression cylinder to the same extent as the gap between the path of the gripper of the vibrating gripper and the drum is changed. This can lead to collisions.

Aufgabe der Erfindung ist es daher, eine eingangs beschriebenen Bogenanlage derart auszugestalten, dass der Spalt zwischen dem Trommelmantel und dem nachgeordneten Druckzylinder veränderbar ist, während der Spalt zwischen dem Trommelmantel und der Bewegungsbahn der Greifer der Bogentransport-systems konstant oder annähernd konstant bleibt. The object of the invention is therefore to design a sheet-fed system described above such that the gap between the drum shell and the downstream pressure cylinder it is changeable, while the gap between the drum shell and the trajectory of the gripper of the sheet transport system remains constant or approximately constant .

Erfindungsgemäß wird die Aufgabe durch eine Bogenanlage nach den Merkmalen des Anspruchs 1 gelöst.According to the invention the object is achieved by a sheet system according to the features of claim 1.

Durch die erfindungsgemäße Lösung ist es möglich, den Druckspalt zwischen dem Trommelmantel und dem Mantel eines nachgeordneten Druckzylinders der Materialdicke der zur Verarbeitung gelangenden Bogen anzupassen. Damit werden die Bogen so geführt, dass diese sich exakt am Mantel anlegen, so dass ein qualitätsgerechtes Bedrucken realisiert werden kann. Außerdem wird durch die Möglichkeit, die Greiferauflagen der Trommel auf einem Flugkreis umlaufen zu lassen, dessen Durchmesser übereinstimmt oder nahezu übereinstimmt mit dem Durchmesser des Trommelmantels, ein Ablegen der Farbe beim Rückseitendruck zu vermeiden.The solution according to the invention makes it possible to adapt the pressure gap between the drum casing and the jacket of a downstream printing cylinder to the material thickness of the sheet to be processed. Thus, the sheets are guided so that they invest exactly on the jacket, so that a quality printing can be realized. In addition, by the possibility of the gripper pads of the drum to circulate a circle whose diameter coincides or nearly coincides with the diameter of the drum shell, to avoid depositing the color in the back pressure.

Die Erfindung wird an einem Ausführungsbeispiel näher erläutert. In den zugehörigen Zeichnungen zeigen

Fig. 1
eine Bogenanlage in der Seitenansicht,
Fig. 2
einen Längsschnitt einer teilweise dargestellten Trommel.
The invention will be explained in more detail using an exemplary embodiment. In the accompanying drawings show
Fig. 1
a bow plant in the side view,
Fig. 2
a longitudinal section of a partially illustrated drum.

In Fig. 1 ist eine Bogenanlage mit einem Anlegtisch 1, einem als Schwinganlage 3 ausgebildeten Bogentransportsystem 2, einer Trommel 4 und einem Druckzylinder 5 dargestellt. Von der Schwinganlage 2 ist ein in einem Gestellpunkt 7 gelagerter Schwinger 6 gezeigt, in dem über die Maschinenbreite beabstandet zueinander Greiferzungen 8 gelagert sind, die mit Greiferaufschlägen 9 korrespondieren.In Fig. 1 is a sheet system with a feed table 1, designed as a vibration system 3 sheet transport system 2, a drum 4 and a pressure cylinder 5 is shown. From the oscillating system 2, a mounted in a frame point 7 oscillator 6 is shown, in which spaced across the machine width to each other gripper tongues 8 are mounted, which correspond with gripper clutches 9.

Die Trommel 4 besteht aus einem Grundkörper 10, der drehfest mit einer Trommelwelle 11 verbunden und die mittels Wälzlagern 12 beidseitig in Maschinenwänden 13 aufgenommen ist, sowie einem Trommelmantel 15. Über eine Koppel 14 ist der Grundkörper 10 mit dem Trommelmantel 15 gekoppelt. Der Trommelmantel 15 ist mit Hilfe von Wälzlagern 16 auf Lagerschilden 17 gelagert. Die Lagerschilde 17 sind mittels Lagerschrauben 31 in den Maschinenwänden 13 um eine Schwenkachse 18 schwenkbar so aufgenommen, dass eine Achse 19 des Trommelmantels 15 in einem Abstand e zu einer Drehachse 23 der Trommelwelle 11 verläuft.The drum 4 consists of a base body 10 which is non-rotatably connected to a drum shaft 11 and which is received by means of rolling bearings 12 on both sides in machine walls 13, and a drum shell 15. Via a coupling 14 of the main body 10 is coupled to the drum shell 15. The drum shell 15 is mounted on bearing plates 17 with the aid of roller bearings 16. The bearing plates 17 are pivotally received by means of bearing screws 31 in the machine walls 13 about a pivot axis 18 so that an axis 19 of the drum shell 15 extends at a distance e to a rotational axis 23 of the drum shaft 11.

Im Grundkörper 10 ist ein Greifersystem 20, bestehend aus Greiferfingern 21, die mit Greiferauflagen 22 zusammenwirken, vorgesehen. Die Greiferauflagen 22 beschreiben bei Rotation einen Kreis mit einem Radius R1, während der Trommelmantel 15 einen Kreis mit einem Radius R2 beschreibt. Die Radien R1 und R2 sind gleich oder nahezu gleich. Die Trommel 4 ist so zu dem als Schwinganlage 3 ausgebildeten Bogentransportsystem 2 und zum Druckzylinder 5 angeordnet, dass sich zwischen dem Trommelmantel 15 und den Greiferaufschlägen 9 der Schwinganlage 3 ein erster Spalt A und zwischen Trommelmantel 15 und dem Druckzylinder 5 ein zweiter Spalt B bildet. Der zweite Spalt B ist einstellbar, indem die Lagerschilde 17 mittels einer Stelleinrichtung 25 um die Schwenkachse 18 geschwenkt werden können. Dazu sind die Lagerschilde 17 mit einer Anlauffläche 24 versehen, die mittels Druckfedern 26 in Wirkverbindung mit jeweils einem Stellexzenter 27 gehalten werden. Die Stellexzenter 27 sind auf einer Stellwelle 28 angeordnet, die mit Hilfe eines Hebels 30 verdreht und durch eine Arretierung 29 fixiert werden kann.In the base body 10, a gripper system 20, consisting of gripper fingers 21, which cooperate with gripper pads 22, is provided. The gripper pads 22 describe on rotation a circle with a radius R1, while the drum shell 15 describes a circle with a radius R2. The radii R1 and R2 are equal or nearly equal. The drum 4 is so arranged to form the oscillating system 3 sheet transport system 2 and the impression cylinder 5, that forms a first gap A and between the drum shell 15 and the impression cylinder 5, a second gap B between the drum shell 15 and the gripper clutches 9 of the vibrating system 3. The second gap B is adjustable by the bearing plates 17 can be pivoted about the pivot axis 18 by means of an adjusting device 25. For this purpose, the end shields 17 are provided with a stop face 24, which are held by means of compression springs 26 in operative connection with a respective Stellexzenter 27. The Adjustment eccentric 27 are arranged on a control shaft 28 which can be rotated by means of a lever 30 and fixed by a lock 29.

Um beim Einstellen des zweiten Spaltes B den ersten Spalt A konstant zu halten, wird die Lage der Schwenkachse 18 vorzugsweise so gewählt, dass diese eine Gerade g schneidet, welche von der Achse 19 des Trommelmantels 15 geschnitten wird und durch den Gestellpunkt 7 verläuft. Aufgrund der geringen Stellwege, der zweite Spalt B weist etwa einen Stellbereich von 1,5 mm auf, ist es auch möglich, diesen Stellweg zu realisieren, ohne den ersten Spalt A zu verändern, wenn die Schwenkachse 18 innerhalb eines sich beidseitig der Geraden g erstreckenden Winkels α vorgesehen wird, wobei der Winkel a sich über einen Bereich von etwa 0° bis 30° erstreckt. Aus Gründen der Übersichtlichkeit ist in Fig. 1 die Lage der Schwenkachse 18 in diesem Bereich dargestellt.In order to keep the first gap A constant when adjusting the second gap B, the position of the pivot axis 18 is preferably selected such that it intersects a straight line g which is cut by the axis 19 of the drum shell 15 and runs through the frame point 7. Due to the small travel paths, the second gap B has approximately a control range of 1.5 mm, it is also possible to realize this travel without changing the first gap A, when the pivot axis 18 within a bilateral of the straight line g extending Angle α is provided, wherein the angle a extends over a range of about 0 ° to 30 °. For clarity, is in Fig. 1 the position of the pivot axis 18 shown in this area.

In bekannter Weise werden die auf den Anlegtisch 1 geförderten Bogen zwischen den Greiferzungen 8 und den Greiferaufschlägen 9 der Schwinganlage 3 geklemmt und zur Trommel 4 transportiert sowie an das Greifersystem 20 der Trommel 4 übergeben. Der erste Spalt A ist so bemessen, dass er mindestens der Bauhöhe der Greiferzungen 8 und der maximal möglichen Materialstärke der zur Vorbereitung gelangenden Bogen entspricht. Die vom Greifersystem 20 erfassten Bogen werden zum Druckzylinder 5 transportiert und an die nicht dargestellten Greifer des Druckzylinders 5 übergeben. Um sicher zu stellen, dass sich die Bogen an den Mantel des Druckzylinders 5 exakt anlegen und damit ein qualitätsgerechtes Bedrucken ermöglichen, wird der zweite Spalt B an die Materialstärke der zur Verarbeitung gelangenden Bogen angepasst. Dazu wird die Arretierung 29 gelöst und die Stellwelle 28 verdreht. Über die Stellexzenter 27 und die Anlaufflächen 24 werden die Lagerschilde 17 um die Schwenkachse 18 geschenkt und damit der Trommelmantel 15 dem Druckzylinder 5 angenähert oder von diesem entfernt und damit ein der Materialstärke entsprechender zweiter Spalt B eingestellt. Durch die Anordnung der Schwenkachse 18 auf der Geraden g oder im Bereich, der durch die sich beidseitig der Geraden g erstreckenden Winkel α begrenzt ist, bleibt der erste Spalt A konstant oder annähernd konstant.In a known manner, the conveyed on the feed table 1 sheet between the gripper tongues 8 and the gripper clutches 9 of the oscillating system 3 are clamped and transported to the drum 4 and transferred to the gripper system 20 of the drum 4. The first gap A is dimensioned such that it corresponds at least to the overall height of the gripper tongues 8 and the maximum possible material thickness of the sheets reaching the preparation. The detected by the gripper system 20 sheets are transported to the printing cylinder 5 and transferred to the gripper of the printing cylinder 5, not shown. In order to ensure that the sheets fit exactly to the jacket of the printing cylinder 5 and thus enable a quality-appropriate printing, the second gap B is adapted to the material thickness of the reaching for processing sheet. For this purpose, the lock 29 is released and the control shaft 28 is rotated. About the location eccentric 27 and the contact surfaces 24, the bearing plates 17 are given to the pivot axis 18 and thus the drum shell 15 the printing cylinder 5 approximated or removed from this and thus set the material thickness corresponding second gap B. Due to the arrangement of the pivot axis 18 on the straight line g or in the area bounded by the angle α extending on both sides of the straight line g, the first gap A remains constant or approximately constant.

Aufstellung der verwendeten BezugszeichenList of used reference numbers

11
Anlegtischfeed table
22
BogentransportsystemSheet transport system
33
Schwinganlageswing feeder
44
Trommeldrum
55
Druckzylinderpressure cylinder
66
SchwingerSchwinger
77
Gestellpunktstand point
88th
Greiferzungengripper tongues
99
Greiferaufschlaggripper
1010
Grundkörperbody
1111
Trommelwelledrum shaft
1212
Wälzlagerroller bearing
1313
Maschinenwandmachine wall
1414
Koppelpaddock
1515
Trommelmanteldrum shell
1616
Wälzlagerroller bearing
1717
Lagerschildend shield
1818
Schwenkachseswivel axis
1919
Achseaxis
2020
Greifersystemgripper system
2121
Greiferfingergripper fingers
2222
GreiferauflageGripper pad
2323
Drehachseaxis of rotation
2424
Anlaufflächeapproach surface
2525
Stelleinrichtungsetting device
2626
Druckfedercompression spring
2727
Stellexzenteradjustment cams
2828
Stellwelleactuating shaft
2929
Arretierunglock
3030
Hebellever
3131
Lagerschraubebearing screw
AA
erster Spaltfirst gap
BB
zweiter Spaltsecond gap
R1 R 1
Radiusradius
R2 R 2
Radiusradius
gG
GeradeJust
ee
Abstanddistance
αα
Winkelangle

Claims (3)

  1. Sheet feeder, including
    - a feed table (1),
    - a sheet transport system, which is arranged downstream of the feed table (1) and which comprises grippers (8, 9) guided on a movement path about a frame point (7), and
    - a drum (4), which is arranged downstream of the sheet transport system (2) and which is equipped with a gripper system 920), wherein
    - the drum (4) comprises a base body (10), which is mounted at both sides in machine walls (13) and carries the gripper system (20), and a sheet-guiding drum casing (15),
    - further including a printing cylinder (5) arranged downstream of the drum (4),
    - wherein a gap (A) is formed between the movement path of the grippers (8, 9) of the sheet transport system (2) and the drum casing (15) and
    - a gap (B) is formed between the drum casing (15) and the printing cylinder (5), characterised in that
    - the drum casing (15) is associated with the base body (20) by way of a variable eccentricity in such a manner that
    - the drum casing (15) is mounted in bearing panels (17) in the machine walls (13),
    wherein
    - the bearing panels (17) are pivotable about a pivot axis (18) and
    - the position of the pivot axis (18) in the machine walls (13) is so selected that on pivotation of the bearing panels (17) about the pivot axis (18) the second gap (B) is arranged to be adjustable without or almost without changing the first gap (A).
  2. Sheet feeder according to claim 1, characterised in that a straight line (g) runs through the axis (19) of the drum casing (15) and through the frame point (7) and that the pivot axis (18) is arranged in a region which extends on both sides of the straight line (g) within an angle (α) of approximately 0° to 30°.
  3. Sheet feeder according to claim 1, characterised in that a setting device (25) pivoting about the pivot axis (18) is associated with the bearing panels (17).
EP20040002877 2003-03-06 2004-02-10 Sheet front feeder Expired - Fee Related EP1454744B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003109709 DE10309709A1 (en) 2003-03-06 2003-03-06 sheet feeder
DE10309709 2003-03-06

Publications (2)

Publication Number Publication Date
EP1454744A1 EP1454744A1 (en) 2004-09-08
EP1454744B1 true EP1454744B1 (en) 2011-05-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040002877 Expired - Fee Related EP1454744B1 (en) 2003-03-06 2004-02-10 Sheet front feeder

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EP (1) EP1454744B1 (en)
DE (1) DE10309709A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE724077C (en) * 1938-12-11 1942-08-17 Planeta Druckmaschinenwerk Ag Device for the accelerated pulling away of an already aligned sheet to be printed
DE1046069B (en) * 1954-04-07 1958-12-11 Roland Offsetmaschf Positioning and parking device for the rubber cylinder of an offset printing machine
DE960994C (en) * 1954-10-15 1957-03-28 Roland Offsetmaschf Sheet-rubber printing machine for front and back printing
US3690253A (en) * 1971-06-10 1972-09-12 Paul E Dreyer Sheet feed press for printing small size sheets on both sides simultaneously
DE19831976B4 (en) * 1998-07-16 2010-07-29 Heidelberger Druckmaschinen Ag Device for feeding sheets to a sheet-processing machine
DE19841128A1 (en) * 1998-09-09 2000-03-16 Koenig & Bauer Ag Sheet guiding device in the sheet feeder
EP1031418B1 (en) * 1999-02-26 2003-07-30 Komori Corporation Sheet-like object conveying apparatus for sheet-fed rotary printing press
DE29904282U1 (en) * 1999-03-10 1999-08-26 Fischer Andreas Roller arrangement
DE10158484A1 (en) 2001-01-22 2002-07-25 Heidelberger Druckmasch Ag Adjusting device for rotary sheet printers uses transport cylinder whose rotational axis can move between two different axial positions according to thickness of sheets

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Publication number Publication date
EP1454744A1 (en) 2004-09-08
DE10309709A1 (en) 2004-09-16

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