EP0575739A1 - Device for supporting a cylinder in a rotary printing machine - Google Patents

Device for supporting a cylinder in a rotary printing machine Download PDF

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Publication number
EP0575739A1
EP0575739A1 EP93107777A EP93107777A EP0575739A1 EP 0575739 A1 EP0575739 A1 EP 0575739A1 EP 93107777 A EP93107777 A EP 93107777A EP 93107777 A EP93107777 A EP 93107777A EP 0575739 A1 EP0575739 A1 EP 0575739A1
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EP
European Patent Office
Prior art keywords
support
cylinder
pivot arm
impression cylinder
side walls
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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.)
Granted
Application number
EP93107777A
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German (de)
French (fr)
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EP0575739B2 (en
EP0575739B1 (en
Inventor
Glenn Alan Guaraldi
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

  • the invention relates to a device for supporting a cylinder in a rotary printing press.
  • U.S. Patent No. 4,119,032 discloses a device in a printing press with which a roller, from which a bearing can be pivoted away for the purpose of carrying out assembly work, is kept in equilibrium.
  • the device comprises a hydraulic cylinder which is pivotally mounted on the floor.
  • the hydraulic cylinder interacts with an extension of the roller to be kept in balance by means of a piston rod, a tensioning screw and a yoke.
  • the yoke connected to the piston rod via a tensioning screw is rotatably supported on the extension piece of the roller to be kept in balance by means of a ball bearing.
  • the hydraulic cylinder holds the roller in a position in which work on the roller can be carried out without further disassembly.
  • a rotary printing machine comprises a frame and spaced side walls, an impression cylinder and a bearing for supporting the ends of the impression cylinder so that it rotates in the side walls of the frame.
  • the Storage can be moved away from one end of the pressure cylinder.
  • the rotary printing press also includes a counterweight mechanism by which the impression cylinder is supported at the other end when the bearing is removed.
  • the counterweight mechanism includes a pivot arm which, from a support position, applies force to the other end of the pressure cylinder to hold it in the frame when the bearing is moved away.
  • the counterweight mechanism also includes a link to move the pivot arm to its support position and hold it against the weight of the impression cylinder in its support position.
  • a printing unit comprises a pair of printing cylinders, a pair of bearings including the bearings for the printing cylinders and a pair of counterweight mechanisms for the printing cylinders.
  • Each of the counterweight mechanisms comprises an actuating cylinder and a joint piece rotatable by the actuating cylinder.
  • the joint piece is connected to the rotating arm by means of a clamping screw, so that the rotating arm is rotated when the actuating cylinder is activated.
  • the rotating arm is mounted in the side frame of the printing press in a position that is adjustable relative to the assigned printing cylinder, and the tensioning screw can be used to additionally adjust the position of the rotating arm relative to the joint piece.
  • the hinge pieces are preferably movable in end positions. When the hinge pieces are in their end positions, the movement of the rotating arms from their supporting positions is blocked under the weight of the pressure cylinders. The rotating arms therefore remain in their supporting positions, even if the pressure in the actuating cylinders drops.
  • the rotating arms can preferably be moved into and out of their supporting position, so that the counterweight mechanisms can only be actuated on the associated pressure cylinders if necessary. This reduces bearing friction and bearing wear to a minimum.
  • a control device for automatically actuating the counterweight mechanisms can be activated by removing the supports in the bearings at the other ends of the pressure cylinders.
  • a printing unit 10 comprises a frame with a pair of spaced side walls 12 and 14.
  • a pair of printing cylinders 16 and 18 are mounted with respective journals 20 and 22.
  • the journals 20 of the printing cylinder 16 are supported by a bearing with support elements 26 in the side walls 12 and 14 rotatably.
  • the journals 22 of the other pressure cylinder 18 are rotatably supported by another bearing with support elements 28 in the side walls 12 and 14.
  • the support members 26 and 28 located on the right side of the printing unit 10 can be moved away from their positions in the side wall 14, as shown in Fig. 1, to access the right ends of the To create impression cylinders 16 and 18 through an opening 30 in the side wall 14.
  • the printing form sleeves 32 and 34 can then be removed from the printing cylinders 16 and 18 by pulling them axially through the opening 30 from the printing cylinders 16 and 18.
  • the upper and lower counterweight mechanisms 40 and 42 exert a counterweight force on the respective left end of the pressure cylinders 16 and 18, as indicated by the arrow in FIG. 1. Accordingly, the upper and lower counterweight mechanisms 40 and 42 support the first and second impression cylinders 16 and 18 when the support members 26 and 28 are removed.
  • the upper and lower counterweight mechanisms 40 and 42 are of the same construction and share a central mounting plate 44.
  • the central mounting plate 44 is secured to the side wall 12 by a bracket 48 and bolts 49 on a flange 46 .
  • Each of the upper and lower counterweight mechanisms 40 and 42 has a rotating arm 50.
  • Each pivot arm 50 is connected to the central mounting plate 44 by adjusting pivot bolts 52.
  • the pivot pin adjustments 52 allow the pivot arms 50 to be rotated about the pivot pin bearing, which enables the positions of the pivot arms 50 to be adjusted in the horizontal direction and thus allows the journals 20 and 22 to be positioned horizontally on the right side of the printing unit 10.
  • Each pivot arm 50 has an arched holding surface 54 which, when the pivot arm 50 rotates about the pivot pin bearing 52, comes into contact and is movable out of contact with the associated journals 20 or 22.
  • the ends of the rotary arms 50 which are distant from the arched holding surfaces 54 are rotatably connected by bolts 58 with clamping screws 56.
  • the clamping screws 56 allow vertical positioning of the journals 20 and 22 on the right side of the printing unit 10.
  • the clamping screws 56 are rotatably connected with triangular joint pieces 60.
  • the hinge pieces 60 are rotatable about bolts 64 fastened in the side wall 12.
  • the upper and lower counterweight mechanisms 40 and 42 also include an actuator cylinder 66 and piston rods 68.
  • the actuator cylinder 66 is rotatable about a bolt 70 secured in the side wall 12.
  • the end of the piston rod 68 is rotatably connected to the joint piece 60 by a bolt 72.
  • the upper and lower counterweight mechanisms 40 and 42 are movable between a closed position shown in solid lines and an open position partially shown in broken lines.
  • the piston rod 68 moves into the actuating cylinder 66 until it is stopped by a stop 74.
  • the joint piece 60 is rotated counterclockwise around the bolt 64.
  • the arched holding surface 54 on the respective rotary arm 50 is thus brought into contact with the bearing pins 20, 22 on the pressure cylinders 16 and 18.
  • the respective rotary arms 50 exert a counterweight pressure on the respectively associated journals 20 or 22, by means of which the associated pressure cylinder 16 or 18 during Removal of the support members 26 and 28 is supported as shown in FIG. 1.
  • the respective tensioning screw 56 would force the respective joint piece 60 to rotate clockwise. If the pressure in the respective actuating cylinder 66 were to drop, it would not be able to withstand such a clockwise rotation of the joint piece 60, and the respective counterweight mechanism 40, 42 would be moved back to the open position shown in broken lines. However, the center of the respective pin 62 is moved to an end position to the left of the imaginary line between the centers of the pins 58 and 64. A movement of the respective tensioning screw 56 downward in the event of a pressure drop in the respective actuating cylinder 66 would consequently cause the respective joint piece 60 to rotate in the counterclockwise direction.
  • the upper and lower counterbalance mechanisms 40 and 42 are mechanically separated from one another in the preferred embodiment of the invention, but they could be mechanically connected to operate together, as is the case with a single actuating cylinder connected to both hinge pieces 60 .
  • the upper and lower counterweight mechanisms 40 and 42 could also be equipped with an electric motor for moving one or both pivot arms 50.
  • a controller for automatically actuating the counterweight mechanisms 40 and 42 could be made responsive to the removal and insertion of the support members 26 and 28.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)

Abstract

A rotary printing machine comprises a frame having side walls (12, 14) which are spaced apart, a first and a second impression cylinder (16, 18), and bearing elements (26, 28) for rotatably supporting the ends (20, 22) of the first and second impression cylinders (16, 18) in the side walls (12, 14) of the frame. The first and second bearing elements (26, 28) can be removed from one end of the impression cylinders (16, 18). A first counter-balance mechanism (40) comprises a first rotary arm (50) which assumes a supporting position in order to exert force on the other end (20) of the first impression cylinder (16) and to support the latter in the frame when the first support element (26) has been removed. A second counter-balance mechanism (42) comprises a second rotary arm (50) which assumes a supporting position in order to exert force on the other end (22) of the second impression cylinder (18) and to support the latter in the frame when the second bearing element (28) has been removed. Each of the counter-balance mechanisms (40, 42) comprises a joint piece (60) for moving the respective rotary arm (50) into its supporting position and for holding the rotary arm (50) in its supporting position counter to the weight of the associated impression cylinder (16, 18). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Stützen eines Zylinders in einer Rotationsdruckmaschine.The invention relates to a device for supporting a cylinder in a rotary printing press.

Aus dem U.S. Patent Nr. 4,119,032 ist eine Vorrichtung in einer Druckmaschine bekannt, mit der eine Walze, von der zum Zwecke der Durchführung von Montagearbeiten eine Lagerung weggeschwenkt werden kann, im Gleichgewicht gehalten wird. Die Vorrichtung umfaßt einen hydraulischen Zylinder, der auf dem Boden schwenkbar gelagert ist. Über eine Kolbenstange, eine Spannschraube und ein Joch wirkt der hydraulische Zylinder mit einem Verlängerungsstück der im Gleichgewicht zu haltenden Walze zusammen. Das mit der Kolbenstange über eine Spannschraube verbundene Joch ist auf dem Verlängerungsstück der im Gleichgewicht zu haltenden Walze über ein Kugellager drehbar gelagert. Der hydraulische Zylinder hält die Walze in einer Position, in welcher Arbeiten an der Walze ohne weitere Demontage ausgeführt werden können.From the U.S. Patent No. 4,119,032 discloses a device in a printing press with which a roller, from which a bearing can be pivoted away for the purpose of carrying out assembly work, is kept in equilibrium. The device comprises a hydraulic cylinder which is pivotally mounted on the floor. The hydraulic cylinder interacts with an extension of the roller to be kept in balance by means of a piston rod, a tensioning screw and a yoke. The yoke connected to the piston rod via a tensioning screw is rotatably supported on the extension piece of the roller to be kept in balance by means of a ball bearing. The hydraulic cylinder holds the roller in a position in which work on the roller can be carried out without further disassembly.

Ein Nachteil bei der in diesem U.S. Patent offenbarten Vorrichtung ist das Fehlen einer Sicherung gegen Druckabfall in dem Hydrauliksystem. Infolge der Schwerkraft würde die Walze bei Druckabfall im Hydrauliksystem durch ihr Eigengewicht in der Seitenwand, in welcher sie noch gelagert ist, verbogen werden. Dies hat kostspielige Montagearbeiten oder ein Auswechseln des Lagers zur Folge.A disadvantage with that in this U.S. The device disclosed in the patent is the lack of a fuse against pressure drop in the hydraulic system. As a result of gravity, the roll would be bent due to its own weight in the side wall in which it is still stored if the pressure in the hydraulic system drops. This results in expensive assembly work or a replacement of the bearing.

Nach der vorliegenden Erfindung umfaßt eine Rotationsdruckmaschine einen Rahmen und voneinander beabstandete Seitenwände, einen Druckzylinder und eine Lagerung zum Lagern der Enden des Druckzylinders, so daß dieser sich in den Seitenwänden des Rahmens dreht. Die Lagerung ist von dem einen Ende des Druckzylinders wegbewegbar.
Die Rotationsdruckmaschine umfaßt außerdem einen Gegengewichtmechanismus, durch welchen der Druckzylinder bei Entfernung der Lagerung an dem anderen Ende gestützt wird. Der Gegengewichtmechanismus umfaßt einen Dreharm, der aus einer Stützposition Kraft auf das andere Ende des Druckzylinders ausübt, um diesen in dem Rahmen zu halten, wenn die Lagerung wegbewegt wird.
Der Gegengewichtmechanismus umfaßt ferner ein Gelenkstück, um den Dreharm in seine Stützposition zu bewegen und diesen gegen das Gewicht des Druckzylinders in seiner Stützposition zu halten.According to the present invention, a rotary printing machine comprises a frame and spaced side walls, an impression cylinder and a bearing for supporting the ends of the impression cylinder so that it rotates in the side walls of the frame. The Storage can be moved away from one end of the pressure cylinder.
The rotary printing press also includes a counterweight mechanism by which the impression cylinder is supported at the other end when the bearing is removed. The counterweight mechanism includes a pivot arm which, from a support position, applies force to the other end of the pressure cylinder to hold it in the frame when the bearing is moved away.
The counterweight mechanism also includes a link to move the pivot arm to its support position and hold it against the weight of the impression cylinder in its support position.

In einer bevorzugten Ausführungsform der Erfindung umfaßt ein Druckwerk ein Paar Druckzylinder, ein Paar Lagerungen einschließlich der Lager für die Druckzylinder und ein Paar Gegengewichtmechanismen für die Druckzylinder. Jede der Gegengewichtmechanismen umfaßt einen Stellzylinder und ein durch den Stellzylinder rotierbares Gelenkstück. Das Gelenkstück ist durch eine Spannschraube mit dem Dreharm verbunden, so daß der Dreharm bei Aktivierung des Stellzylinders gedreht wird. Der Dreharm ist in dem Seitenrahmen der Druckmaschine in einer Position gelagert, die relativ zu dem zugeordneten Druckzylinder verstellbar ist, und durch die Spannschraube kann eine zusätzliche Verstellung der Position des Dreharms relativ zu dem Gelenkstück vorgenommen werden.In a preferred embodiment of the invention, a printing unit comprises a pair of printing cylinders, a pair of bearings including the bearings for the printing cylinders and a pair of counterweight mechanisms for the printing cylinders. Each of the counterweight mechanisms comprises an actuating cylinder and a joint piece rotatable by the actuating cylinder. The joint piece is connected to the rotating arm by means of a clamping screw, so that the rotating arm is rotated when the actuating cylinder is activated. The rotating arm is mounted in the side frame of the printing press in a position that is adjustable relative to the assigned printing cylinder, and the tensioning screw can be used to additionally adjust the position of the rotating arm relative to the joint piece.

Die Gelenkstücke sind vorzugsweise in Endpositionen bewegbar. Wenn die Gelenkstücke sich in ihren Endpositionen befinden, dann ist die Bewegung der Dreharme aus ihren Stützpositionen unter dem Gewicht der Druckzylinder blockiert. Die Dreharme bleiben also in ihren Stützpositionen, auch wenn der Druck in den Stellzylindern abfällt.The hinge pieces are preferably movable in end positions. When the hinge pieces are in their end positions, the movement of the rotating arms from their supporting positions is blocked under the weight of the pressure cylinders. The rotating arms therefore remain in their supporting positions, even if the pressure in the actuating cylinders drops.

Vorzugsweise sind die Dreharme in ihre und aus ihrer Stützposition bewegbar, so daß die Gegengewichtmechanismen nur im Bedarfsfall an den zugeordneten Druckzylindern betätigt werden können. Somit wird Lagerreibung und Abnutzung der Lager auf ein Minimum reduziert. Eine Steuereinrichtung zum automatischen Betätigen der Gegengewichtmechanismen kann durch Entfernen der Träger in den Lagerungen an den anderen Enden der Druckzylinder aktiviert werden.The rotating arms can preferably be moved into and out of their supporting position, so that the counterweight mechanisms can only be actuated on the associated pressure cylinders if necessary. This reduces bearing friction and bearing wear to a minimum. A control device for automatically actuating the counterweight mechanisms can be activated by removing the supports in the bearings at the other ends of the pressure cylinders.

Diese und andere Merkmale der Erfindung werden durch die folgende Beschreibung eines bevorzugten Ausführungsbeispiels im Zusammenhang mit den beigefügten, nachstehend erläuterten Zeichnungen weiter verdeutlicht.

Fig. 1
ist eine schematische Darstellung einer erfindungsgemäßen Ausführung eines Druckwerks;
Fig. 2
ist eine Teilansicht entlang der Linie 2-2 der Fig. 1; und
Fig. 3
ist eine Ansicht entlang der Linie 3-3 der Fig. 2.
These and other features of the invention are further clarified by the following description of a preferred exemplary embodiment in conjunction with the accompanying drawings explained below.
Fig. 1
is a schematic representation of an embodiment of a printing unit according to the invention;
Fig. 2
is a partial view taken along line 2-2 of Fig. 1; and
Fig. 3
Figure 3 is a view taken along line 3-3 of Figure 2.

Wie in Fig. 1 gezeigt, umfaßt ein Druckwerk 10 einen Rahmen mit einem Paar voneinander beabstandeten Seitenwänden 12 und 14. In den Seitenwänden 12 und 14 lagern ein Paar Druckzylinder 16 und 18 mit jeweiligen Lagerzapfen 20 und 22. Die Lagerzapfen 20 des Druckzylinders 16 werden von einer Lagerung mit Trägerelementen 26 in den Seitenwänden 12 und 14 drehbar gestützt. Die Lagerzapfen 22 des anderen Druckzylinders 18 werden von einer anderen Lagerung mit Trägerelementen 28 in den Seitenwänden 12 und 14 drehbar gestützt. Die sich an der rechten Seite des Druckwerks 10 befindenden Trägerelemente 26 und 28 können von ihren Positionen in der Seitenwand 14 wegbewegt werden, wie in Fig. 1 gezeigt, um Zugang zu den rechten Enden der Druckzylinder 16 und 18 durch eine Öffnung 30 in der Seitenwand 14 zu schaffen. Die Druckformhülsen 32 und 34 können dann von den Druckzylindern 16 und 18 entfernt werden, indem diese durch die Öffnung 30 axial von den Druckzylindern 16 und 18 gezogen werden.As shown in Fig. 1, a printing unit 10 comprises a frame with a pair of spaced side walls 12 and 14. In the side walls 12 and 14, a pair of printing cylinders 16 and 18 are mounted with respective journals 20 and 22. The journals 20 of the printing cylinder 16 are supported by a bearing with support elements 26 in the side walls 12 and 14 rotatably. The journals 22 of the other pressure cylinder 18 are rotatably supported by another bearing with support elements 28 in the side walls 12 and 14. The support members 26 and 28 located on the right side of the printing unit 10 can be moved away from their positions in the side wall 14, as shown in Fig. 1, to access the right ends of the To create impression cylinders 16 and 18 through an opening 30 in the side wall 14. The printing form sleeves 32 and 34 can then be removed from the printing cylinders 16 and 18 by pulling them axially through the opening 30 from the printing cylinders 16 and 18.

Wenn die Trägerelemente 26 und 28 aus der Seitenwand 14 entfernt sind, wie in Fig. 1 gezeigt, sind die Druckzylinder 16 und 18 an ihren rechten Enden nicht mehr gestützt. Folglich üben entsprechend der vorliegenden Erfindung der obere und der untere Gegengewichtmechanismus 40 und 42 eine als Gegengewicht bezeichnete Kraft an dem jeweiligen linken Ende der Druckzylinder 16 und 18 aus, wie dies mit dem Pfeil in Fig. 1 angedeutet ist. Folglich stützen der obere und der untere Gegengewichtmechanismus 40 und 42 den ersten und den zweiten Druckzylinder 16 und 18, wenn die Trägerelemente 26 und 28 entfernt sind.When the support members 26 and 28 are removed from the side wall 14, as shown in FIG. 1, the pressure cylinders 16 and 18 are no longer supported at their right ends. Accordingly, in accordance with the present invention, the upper and lower counterweight mechanisms 40 and 42 exert a counterweight force on the respective left end of the pressure cylinders 16 and 18, as indicated by the arrow in FIG. 1. Accordingly, the upper and lower counterweight mechanisms 40 and 42 support the first and second impression cylinders 16 and 18 when the support members 26 and 28 are removed.

Wie in Fig. 2 und 3 gezeigt, sind der obere und der untere Gegengewichtmechanismus 40 und 42 von gleicher Konstruktion und teilen sich eine zentrale Montageplatte 44. Die zentrale Montageplatte 44 ist durch Halter 48 und Bolzen 49 auf einem Flansch 46 an der Seitenwand 12 befestigt.2 and 3, the upper and lower counterweight mechanisms 40 and 42 are of the same construction and share a central mounting plate 44. The central mounting plate 44 is secured to the side wall 12 by a bracket 48 and bolts 49 on a flange 46 .

Jeder der oberen und unteren Gegengewichtmechanismen 40 und 42 weist einen Dreharm 50 auf. Jeder Dreharm 50 ist durch eine Verstellung von Drehbolzen 52 mit der zentralen Montageplatte 44 verbunden. Die Drehbolzenverstellungen 52 erlauben das Drehen der Dreharme 50 um die Drehbolzenlagerung, was eine Verstellung der Positionen der Dreharme 50 in horizontaler Richtung und somit eine horizontale Positionierung der Lagerzapfen 20 und 22 an der rechten Seite des Druckwerks 10 ermöglicht. Jeder Dreharm 50 weist eine gewölbte Haltefläche 54 auf, die bei der Drehung des Dreharms 50 um die Drehbolzenlagerung 52 in den Kontakt und aus dem Kontakt mit den zugeordneten Lagerzapfen 20 oder 22 bewegbar ist.Each of the upper and lower counterweight mechanisms 40 and 42 has a rotating arm 50. Each pivot arm 50 is connected to the central mounting plate 44 by adjusting pivot bolts 52. The pivot pin adjustments 52 allow the pivot arms 50 to be rotated about the pivot pin bearing, which enables the positions of the pivot arms 50 to be adjusted in the horizontal direction and thus allows the journals 20 and 22 to be positioned horizontally on the right side of the printing unit 10. Each pivot arm 50 has an arched holding surface 54 which, when the pivot arm 50 rotates about the pivot pin bearing 52, comes into contact and is movable out of contact with the associated journals 20 or 22.

Die von den gewölbten Halteflächen 54 entfernten Enden der Dreharme 50 sind durch Bolzen 58 mit Spannschrauben 56 drehbar verbunden. Die Spannschrauben 56 erlauben eine vertikale Positionierung der Lagerzapfen 20 und 22 an der rechten Seite des Druckwerks 10. Die Spannschrauben 56 sind mit dreieckigen Gelenkstücken 60 drehbar verbunden. Die Gelenkstücke 60 sind um in der Seitenwand 12 befestigte Bolzen 64 drehbar.The ends of the rotary arms 50 which are distant from the arched holding surfaces 54 are rotatably connected by bolts 58 with clamping screws 56. The clamping screws 56 allow vertical positioning of the journals 20 and 22 on the right side of the printing unit 10. The clamping screws 56 are rotatably connected with triangular joint pieces 60. The hinge pieces 60 are rotatable about bolts 64 fastened in the side wall 12.

Der obere und der untere Gegengewichtmechanismus 40 und 42 umfassen auch einen Stellzylinder 66 und eine Kolbenstangen 68. Der Stellzylinder 66 ist um einen in der Seitenwand 12 befestigten Bolzen 70 drehbar. Das Ende der Kolbenstange 68 ist durch einen Bolzen 72 drehbar mit dem Gelenkstück 60 verbunden.The upper and lower counterweight mechanisms 40 and 42 also include an actuator cylinder 66 and piston rods 68. The actuator cylinder 66 is rotatable about a bolt 70 secured in the side wall 12. The end of the piston rod 68 is rotatably connected to the joint piece 60 by a bolt 72.

Wie in Fig. 2 gezeigt, sind der obere und der untere Gegengewichtmechanismus 40 und 42 zwischen einer in ausgezogenen Linien gezeigten geschlossenen Position und einer teilweise in gestrichelten Linien gezeigten offenen Position bewegbar. Bei der Bewegung von der in gestrichelten Linien gezeigten offenen Position zu der in ausgezogen Linien gezeigten geschlossenen Position fährt die Kolbenstange 68 in den Stellzylinder 66 ein bis sie von einem Stopper 74 gestoppt wird. Das Gelenkstück 60 wird dabei um den Bolzen 64 im Gegenuhrzeigersinn gedreht. Die gewölbte Haltefläche 54 an dem jeweiligen Dreharm 50 wird somit in den Kontakt mit den Lagerzapfen 20, 22 an den Druckzylindern 16 und 18 gebracht. Während des Kontakts mit den Lagerzapfen 20 und 22 üben die jeweiligen Dreharme 50 auf den jeweils zugeordneten Lagerzapfen 20 oder 22 einen Gegengewichtsdruck aus, durch welchen der zugehörige Druckzylinder 16 oder 18 beim Entfernen der Trägerelemente 26 und 28 gestützt wird, wie in Fig. 1 gezeigt.As shown in FIG. 2, the upper and lower counterweight mechanisms 40 and 42 are movable between a closed position shown in solid lines and an open position partially shown in broken lines. When moving from the open position shown in dashed lines to the closed position shown in solid lines, the piston rod 68 moves into the actuating cylinder 66 until it is stopped by a stop 74. The joint piece 60 is rotated counterclockwise around the bolt 64. The arched holding surface 54 on the respective rotary arm 50 is thus brought into contact with the bearing pins 20, 22 on the pressure cylinders 16 and 18. During contact with the journals 20 and 22, the respective rotary arms 50 exert a counterweight pressure on the respectively associated journals 20 or 22, by means of which the associated pressure cylinder 16 or 18 during Removal of the support members 26 and 28 is supported as shown in FIG. 1.

Bei der Drehung des jeweiligen Gelenkstücks 60 im Gegenuhrzeigersinn, wie hieroben beschrieben, wird dieses soweit gedreht, daß die Mitte des Bolzens 62 über eine gedachte Linie zwischen den Mitten der Bolzen 58 und 64 nach links bewegt wird. Somit werden der Bolzen 62 und das Gelenkstück 60 in eine Endposition bewegt. Dies ist ein erfindungsgemäßes Sicherheitsmerkmal. Wenn die Trägerelemente 26 und 28 entfernt sind, wie in Fig. 1 gezeigt, dann beaufschlagen die Druckzylinder 16 und 18 durch ihr Gewicht über die Lagerzapfen 20 und 22 die Dreharme 50 mit Hebekräften. Diese Hebekräfte zwingen die Dreharme 50 sich im Gegenuhrzeigersinn zu bewegen. Die Spannschrauben 56 werden somit gezwungen, sich nach unten zu bewegen. Würde die Mitte des jeweiligen Bolzens 62 sich rechts von der gedachten Linie zwischen den Mitten der Bolzen 58 und 64 befinden, so würde die jeweilige Spannschraube 56 das jeweilige Gelenkstück 60 zwingen, sich im Uhrzeigersinn zu drehen. Würde der Druck in dem jeweiligen Stellzylinder 66 abfallen, so würde dieser solch einer Drehung des Gelenkstücks 60 im Uhrzeigersinn nicht widerstehen, und der jeweilige Gegengewichtmechanismus 40, 42 würde zurück in die mit gestrichelten Linien gezeigte offene Position bewegt werden. Die Mitte des jeweiligen Bolzens 62 wird jedoch in eine Endposition links von der gedachten Linie zwischen den Mitten der Bolzen 58 und 64 bewegt. Eine Bewegung der jeweiligen Spannschraube 56 nach unten bei Druckabfall in dem jeweiligen Stellzylinder 66 würde folglich das jeweilige Gelenkstück 60 veranlassen, sich im Gegenuhrzeigersinn zu drehen. Diese Gegenuhrzeigersinn-Bewegung des Gelenkstücks 60 wird durch den Stopper 74 an der Kolbenstange 68 blockiert. Das jeweilige Gelenkstück 60 hält somit den jeweiligen Dreharm 50 in seiner geschlossenen Position gegen das Gewicht des jeweiligen Druckzylinders 16, 18, was ein Sicherheitsmerkmal dieser Erfindung darstellt.When the respective joint piece 60 rotates counterclockwise, as described above, it is rotated so far that the center of the pin 62 is moved to the left via an imaginary line between the centers of the pins 58 and 64. Thus, the bolt 62 and the joint piece 60 are moved into an end position. This is a security feature according to the invention. When the carrier elements 26 and 28 have been removed, as shown in FIG. 1, the pressure cylinders 16 and 18 act on the pivot arms 50 by means of their weight via the bearing pins 20 and 22 with lifting forces. These lifting forces force the pivot arms 50 to move counterclockwise. The clamping screws 56 are thus forced to move downwards. If the center of the respective pin 62 were to the right of the imaginary line between the centers of the pins 58 and 64, the respective tensioning screw 56 would force the respective joint piece 60 to rotate clockwise. If the pressure in the respective actuating cylinder 66 were to drop, it would not be able to withstand such a clockwise rotation of the joint piece 60, and the respective counterweight mechanism 40, 42 would be moved back to the open position shown in broken lines. However, the center of the respective pin 62 is moved to an end position to the left of the imaginary line between the centers of the pins 58 and 64. A movement of the respective tensioning screw 56 downward in the event of a pressure drop in the respective actuating cylinder 66 would consequently cause the respective joint piece 60 to rotate in the counterclockwise direction. This counterclockwise movement of the joint piece 60 is blocked by the stopper 74 on the piston rod 68. The respective joint piece 60 thus holds the respective rotary arm 50 in its closed position against the weight of the respective printing cylinders 16, 18, which is a security feature of this invention.

Die vorangehende Beschreibung der Erfindung kann den Fachmann zu weiteren Verbesserungen, Änderungen und Modifikationen anregen. Es sind z.B. der obere und der untere Gegengewichtmechanismus 40 und 42 in der bevorzugten Ausführungsform der Erfindung mechanisch voneinander getrennt, sie könnten aber mechanisch zu gemeinsamer Betätigung verbunden werden, so wie dies der Fall ist bei einem einzelnen Stellzylinder, der mit beiden Gelenkstücken 60 verbunden ist. Der obere und der untere Gegengewichtmechanismus 40 und 42 könnten auch mit einem elektrischen Motor zur Bewegung eines oder beider Dreharme 50 ausgestattet sein. Eine Steuereinrichtung zur automatischen Betätigung der Gegengewichtmechanismen 40 und 42 könnte auf das Entfernen und Einfügen der Trägerelemente 26 und 28 ansprechbar gemacht werden. Solche Verbesserungen, Änderungen und Modifikationen entsprechend den Fähigkeiten des Fachmanns fallen in den Rahmen der anhängenden Patentansprüche.The foregoing description of the invention may encourage those skilled in the art to make further improvements, changes, and modifications. For example, the upper and lower counterbalance mechanisms 40 and 42 are mechanically separated from one another in the preferred embodiment of the invention, but they could be mechanically connected to operate together, as is the case with a single actuating cylinder connected to both hinge pieces 60 . The upper and lower counterweight mechanisms 40 and 42 could also be equipped with an electric motor for moving one or both pivot arms 50. A controller for automatically actuating the counterweight mechanisms 40 and 42 could be made responsive to the removal and insertion of the support members 26 and 28. Such improvements, changes and modifications according to the skill of those skilled in the art are within the scope of the appended claims.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

1010th
DruckwerkPrinting unit
1212
SeitenwandSide wall
1414
SeitenwandSide wall
1616
DruckzylinderPressure cylinder
1818th
DruckzylinderPressure cylinder
2020th
LagerzapfenBearing journal
2222
LagerzapfenBearing journal
2626
TrägerelementCarrier element
2828
TrägerelementCarrier element
3030th
Öffnungopening
3232
DruckformhülsePrinting form sleeve
3434
DruckformhülsePrinting form sleeve
4040
GegengewichtmechanismusCounterweight mechanism
4242
GegengewichtmechanismusCounterweight mechanism
4444
MontageplatteMounting plate
4646
Flanschflange
4848
Halterholder
4949
Bolzenbolt
5050
DreharmeSwivel arms
5252
DrehbolzenPintle
5454
HalteflächeHolding surface
5656
SpannschraubenTurnbuckles
5858
Bolzenbolt
6060
GelenkstückeJoint pieces
6262
Bolzenbolt
6464
Bolzenbolt
6666
StellzylinderActuator cylinder
6868
KolbenstangenPiston rods
7070
Bolzenbolt
7272
Bolzenbolt
7474
Stopperstopper

Claims (7)

Vorrichtung, welche die folgenden Merkmale umfaßt: einen Rahmen mit voneinander beabstandeten Seitenwänden (12, 14);
einen Druckzylinder (16);
ein Trägerelement (26) für das Stützen der Enden (20) des genannten Druckzylinders (16) in den genannten Seitenwänden (12, 14), wobei das genannte Trägerelement (26) von dem einen Ende (20) des genannten Druckzylinders entfernbar ist;
einen Gegengewichtmechanismus (40) mit einem in seiner Position verstellbaren Dreharm (50), welcher in einer Stützposition Kraft auf das andere Ende (20) des genannten Druckzylinders (16) ausübt, um beim Entfernen des genannten Trägerelements den genannten Druckzylinder (16) in dem genannten Rahmen zu stützen;
und mit einem Gelenkstück (60) zum Bewegen des genannten Dreharms (50) in die genannte Stützposition und zum Halten des genannten Dreharms (50) in der genannten Stützposition gegen das Gewicht des Druckzylinders (16).Apparatus comprising the following features: a frame with spaced side walls (12, 14);
an impression cylinder (16);
a support member (26) for supporting the ends (20) of said impression cylinder (16) in said side walls (12, 14), said support member (26) being removable from one end (20) of said impression cylinder;
a counterweight mechanism (40) with a positionally adjustable rotary arm (50) which, in a support position, exerts force on the other end (20) of said pressure cylinder (16) in order to remove said pressure cylinder (16) in the position when removing said support element support said framework;
and having a hinge (60) for moving said pivot arm (50) to said support position and for holding said pivot arm (50) in said support position against the weight of the impression cylinder (16). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der genannte Gegengewichtmechanismus (40) ein drehbares Gelenkstück (60) umfaßt, einen Stellzylinder (66) zum Verbinden des genannten Gelenkstücks (60) mit einer der genannten Seitenwände (12), und eine Spannschraube (56) zum verstellbaren Verbinden des genannten Gelenkstücks (60) mit dem genannten Dreharm (50).Device according to claim 1,
characterized,
that said counterweight mechanism (40) comprises a rotatable hinge piece (60), an actuating cylinder (66) for connecting said hinge piece (60) to one of said side walls (12), and a tensioning screw (56) for adjustably connecting said hinge piece ( 60) with the mentioned rotating arm (50). Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß das genannte Gelenkstück (60) in eine erste Richtung drehbar ist, um eine Bewegung des genannten Dreharms (50) weg von dem genannten Druckzylinder (16) zu bewirken, daß der genannte Dreharm (50) das genannte Gelenkstück (60) zwingt, sich beim Entfernen des genannten Trägerelements (26) in eine zweite Richtung entgegen der genannten ersten Richtung zu drehen, und der genannte Stellzylinder (66) beim Entfernen des genannten Trägerelements (26) die Drehung des genannten Gelenkstücks (60) in die genannte zweite Richtung blockiert.Device according to claim 2,
characterized,
that said link (60) is rotatable in a first direction to cause said pivot arm (50) to move away from said pressure cylinder (16) so that said pivot arm (50) forces said link (60) to move when said support member (26) is removed, rotating in a second direction opposite said first direction, and said actuator cylinder (66) when said support member (26) is removed blocking said joint member (60) from rotating in said second direction. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der genannte Dreharm (50) in und aus dem Kontakt mit dem genannten Druckzylinder (16) bewegbar ist.Device according to claim 1,
characterized,
that said pivot arm (50) is movable in and out of contact with said pressure cylinder (16). Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der genannte Dreharm (50) eine gewölbte Haltefläche (54) aufweist, die mit dem Ende (20) des genannten Druckzylinders (16) in Kontakt gebracht wird.Device according to claim 1,
characterized,
that said pivot arm (50) has an arched support surface (54) which is brought into contact with the end (20) of said pressure cylinder (16). Vorrichtung nach Anspruch 5,
dadurch gekennzeichnet,
daß der genannte Gegengewichtmechanismus (40) ein Element (52) zum Verstellen der genannten Stützposition des genannten Dreharms (50) umfaßt, um die Position der genannten gewölbten Haltefläche (54) zu verstellen, wenn sich der genannte Dreharm (50) in der genannten Stützposition befindet.Device according to claim 5,
characterized,
that said counterweight mechanism (40) includes a member (52) for moving said support position of said pivot arm (50) to adjust the position of said curved support surface (54) when said pivot arm (50) is in said support position located. Vorrichtung nach Anspruch 6,
dadurch gekennzeichnet,
daß das genannte Verstellelement (52) die Position der genannten gewölbten Haltefläche (54) sowohl vertikal als auch horizontal verstellt.Apparatus according to claim 6,
characterized,
that said adjusting element (52) adjusts the position of said curved holding surface (54) both vertically and horizontally.
EP93107777A 1992-06-22 1993-05-13 Device for supporting a cylinder in a rotary printing machine Expired - Lifetime EP0575739B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/901,923 US5237920A (en) 1992-06-22 1992-06-22 Apparatus for supporting a cylinder in a rotary printing unit
US901923 1992-06-22

Publications (3)

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EP0575739A1 true EP0575739A1 (en) 1993-12-29
EP0575739B1 EP0575739B1 (en) 1996-08-28
EP0575739B2 EP0575739B2 (en) 1999-03-31

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US (1) US5237920A (en)
EP (1) EP0575739B2 (en)
JP (1) JP3217899B2 (en)
CA (1) CA2099353C (en)
DE (2) DE4315909C2 (en)

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DE19740129C2 (en) * 1997-09-12 2003-08-14 Roland Man Druckmasch Rotary printing machine with cylinders that can be exposed on the front
US6615722B2 (en) 2000-05-17 2003-09-09 Nex Press Solutions Llc Replaceable cylinder element including cylindrical sleeve and end members having complementary centering faces

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DE4241567A1 (en) * 1992-12-10 1994-06-16 Roland Man Druckmasch Device for adjusting the pressure of a pressure cylinder equipped with a slide-on sleeve
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DE4404758C2 (en) * 1994-02-15 1996-06-27 Roland Man Druckmasch Method and device for changing the covering of a cylinder of a web-fed rotary printing press
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DE4414084C2 (en) * 1994-04-22 1997-09-18 Roland Man Druckmasch Rotary printing machine with several cooperating cylinders
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US5458061A (en) * 1994-05-13 1995-10-17 Mitsubishi Jukogyo Kabushiki Kaisha Printing press
DE4423803C2 (en) * 1994-05-13 2001-09-27 Mitsubishi Heavy Ind Ltd Device for fastening and releasing a bearing of a printing roller in a printing machine
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DE19603500A1 (en) * 1996-01-31 1997-08-07 Polywest Kunststofftechnik Sleeve for a rotogravure roller, process for its production and working method of the device for the production
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DE19740129C2 (en) * 1997-09-12 2003-08-14 Roland Man Druckmasch Rotary printing machine with cylinders that can be exposed on the front
EP1099549A2 (en) * 1999-11-12 2001-05-16 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for supporting a cantilever-mounted cylinder
EP1099549A3 (en) * 1999-11-12 2001-09-19 Heidelberger Druckmaschinen Aktiengesellschaft Device and method for supporting a cantilever-mounted cylinder
US6343547B1 (en) 1999-11-12 2002-02-05 Heidelberger Druckmaschinen Ag Cantilevered cylinder counterpoise device and method
US6615722B2 (en) 2000-05-17 2003-09-09 Nex Press Solutions Llc Replaceable cylinder element including cylindrical sleeve and end members having complementary centering faces

Also Published As

Publication number Publication date
EP0575739B2 (en) 1999-03-31
DE4315909C2 (en) 2001-05-23
CA2099353A1 (en) 1993-12-27
US5237920A (en) 1993-08-24
CA2099353C (en) 1998-05-05
DE59303546D1 (en) 1996-10-02
JPH0631892A (en) 1994-02-08
JP3217899B2 (en) 2001-10-15
DE4315909A1 (en) 1993-12-23
EP0575739B1 (en) 1996-08-28

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