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EP0234456B1 - Supplementary printing unit - Google Patents

Supplementary printing unit Download PDF

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Publication number
EP0234456B1
EP0234456B1 EP87102092A EP87102092A EP0234456B1 EP 0234456 B1 EP0234456 B1 EP 0234456B1 EP 87102092 A EP87102092 A EP 87102092A EP 87102092 A EP87102092 A EP 87102092A EP 0234456 B1 EP0234456 B1 EP 0234456B1
Authority
EP
European Patent Office
Prior art keywords
printing
cylinders
cylinder
printing device
carriage
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 - Lifetime
Application number
EP87102092A
Other languages
German (de)
French (fr)
Other versions
EP0234456A2 (en
EP0234456A3 (en
EP0234456B2 (en
Inventor
Mario Forno
Mario Saterini
Gianfranco Gibellino
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.)
Officine Meccaniche Giovanni Cerutti SpA
Original Assignee
Officine Meccaniche Giovanni Cerutti SpA
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Publication date
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Application filed by Officine Meccaniche Giovanni Cerutti SpA filed Critical Officine Meccaniche Giovanni Cerutti SpA
Priority to AT87102092T priority Critical patent/ATE80833T1/en
Publication of EP0234456A2 publication Critical patent/EP0234456A2/en
Publication of EP0234456A3 publication Critical patent/EP0234456A3/en
Publication of EP0234456B1 publication Critical patent/EP0234456B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • 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
    • B41P2217/00—Printing machines of special types or for particular purposes
    • B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
    • B41P2217/13—Machines with double or multiple printing units for "flying" printing plates exchange

Definitions

  • the above invention relates to an auxiliary printing unit, e.g. an additional flexographic printing unit.
  • Devices of this type are also referred to as "imprinters" and have two printing cylinders for receiving the printing plates, which alternately and selectively serve to create additional impressions in a paper web or similar material which is moved around a counterpressure roller.
  • additional printing devices e.g. in the form of an additional flexographic printing device of the type described, are mostly used in rotary printing presses, where such additional devices are arranged at the outlet of the main machine.
  • additional printing devices imprinters
  • Each printing cylinder is e.g. an anilox cylinder and a rubber roller, which ensures perfect paint application.
  • One of the printing cylinders, which has the printing plates, is selectively connected to the paper web, which moves around a peripheral part of the fixedly arranged impression cylinder. This creates the possibility of introducing additional impressions into the passing paper web, e.g. to be provided only for a special edition or to be printed only in a specific local edition of the publication.
  • the disadvantage of the known imprinters of this type is that the rotational speed of the printing cylinder, whose diameter is variable, can be perfectly synchronized with the rotational speed of the impression cylinder, around which the material strip to be printed moves and which is driven by the main drive system of the printing press.
  • the known devices of the type mentioned when changing the diameter of the printing cylinders that receive the printing plates, it is necessary to dismantle a considerable number of drive sprockets with the associated ball bearings inside the machine frame of the imprinter in order to synchronize the peripheral speed to achieve by replacing these gears and thus adapt the speed of rotation of the printing cylinders that receive the printing plates to the speed of rotation of the impression cylinder.
  • this mechanical intervention which involves an effort that should not be underestimated, it is necessary to have several specialists trained in it; these require several hours for the conversion work, and the additional pressure device (imprinter) cannot be used during the duration of this conversion work.
  • GB-A-184987 shows a printing device in which the material web to be printed can optionally be brought into operative connection with an additional pressure cylinder that can be operated by hand.
  • a single ink application device is assigned to these additionally activatable printing cylinders. Only a single color printing process can be carried out.
  • the additional printing cylinders are also arranged above the paper web to be printed, which entails the risk of contamination of the paper web and damage to the same when the additional printing cylinders are replaced.
  • This device is not an additional printing unit with which different print images could be created in a single paper web, but rather a device which is equipped with a printing cylinder with which, after a swiveling movement, optionally a first material web is provided for test printing or a second material web intended for the actual printing process can be brought into operative connection with the printing cylinder.
  • the known device is therefore not used for the optional printing of a single paper web using two different printing cylinders, but it is a device in which optionally under Two different material webs can be printed using a single printing cylinder.
  • the object of the above invention is to avoid the disadvantages of the prior art and to propose a new additional printing device (imprinter) of the type mentioned, which enables the printing cylinders to be exchanged very quickly with the printing plates, and permits the use of printing cylinders with different diameters that a quick start of the printing process is possible, and no mechanical intervention is necessary, and that there is also the possibility to carry out a simple registration and adjustment, as well as a quick start of the printing cylinder.
  • imprinter imprinter
  • the ends of the impression cylinder are mounted in the lower end of swivel arms, the upper ends of which are connected to a horizontally arranged swivel axis, and the swivel axis of each swivel arm is connected to a sled-like device, and each sled-like device opposite the Side parts of the machine frame is movably mounted up and down, and the impression cylinder is arranged between two underlying, horizontally arranged and interchangeable printing cylinders that receive printing plates.
  • the side parts of the machine frame have lateral recesses which are accessible from the outside of the machines and form bearing seats for receiving the bearing journals with the associated ball bearings of the pressure cylinders.
  • Each carriage has a swivel support below the printing cylinder, which receives the printing plates, which is arranged to be pivotable about a horizontally arranged axis, and has an inking unit which, e.g. consists of an inking cylinder having a rubber jacket, which is operatively connected to an anilox cylinder, which is assigned to the printing cylinder which receives the printing plates.
  • an inking unit which, e.g. consists of an inking cylinder having a rubber jacket, which is operatively connected to an anilox cylinder, which is assigned to the printing cylinder which receives the printing plates.
  • the device (imprinter) according to the invention has two laterally arranged machine frames or cheeks, all of which are designated by 1.
  • the paper tape 2 is guided with the aid of a compensating roller 3 and by means of guide rollers 4 and 5 around an impression cylinder 6, the paper tape moving in the direction of arrow (f).
  • Each end of the impression cylinder 6 is designed as a bearing journal 6a, which is received by an arm 7, which can be pivoted about a horizontally arranged pivot axis 8.
  • Each swivel arm 7 is received at one end (hub) by a slide 10 which is arranged so as to be displaceable in the vertical direction and is received by parallel guides 11 for this purpose.
  • a controllable drive motor not shown
  • a hydraulic cylinder or a pneumatic cylinder P
  • the carriage 10 can be moved up or down by a small, limited amount, as shown by the arrow (g) is.
  • At least one guide 11 is assigned a tensioning device, for example a hydraulic blocking device, which advantageously consists of a number of hydraulic pistons 12 which the carriage 10 in the desired Block the position between the guides 11.
  • a tensioning device for example a hydraulic blocking device, which advantageously consists of a number of hydraulic pistons 12 which the carriage 10 in the desired Block the position between the guides 11.
  • the position taken is from Diameter of the printing cylinder 6 receiving the printing plates depending.
  • the piston (P) mentioned advantageously a pneumatic piston, the slide 10 and thus the cylinder can be given a small stroke movement in the direction of the arrow (g). This stroke movement corresponds to the width of a window-like opening 55 which is incorporated in the end of a threaded rod 56.
  • the window-like opening 55 is connected to a cylindrical pin 67 which is connected in one piece to the slide 10.
  • the cylinder pin can carry out an unimpeded sliding movement in the window-like opening 55.
  • the rod 56 is advantageously designed as a rod which has a threaded end 57 which is operatively connected to an internal thread 58 of a toothed ring 59 which is rotatably provided in the interior of a centrally arranged column 18.
  • a threaded worm 60 is operatively connected to the ring gear 59, which is advantageously driven by a controllable motor (not shown), advantageously by a direct current motor.
  • the controllable motor is assigned a rotatable encoder or a similar means, in order thereby to be able to determine with precision the position of the counter-pressure cylinder 6 with respect to the cylinders 16s and 16d.
  • Each side wall 13 of the imprinter 11 has, under the impression cylinder 6, receiving openings 14, which enable simple insertion of the bearing journals 15 of the cylinders 16s and 16d, which are interchangeable and carry the pressure plates.
  • the pins 15 are equipped in a known manner with ball bearings and are clamped in their working position, e.g. using known clamps 17, which can be fixed hydraulically or with mechanical clamping means.
  • the frame 1 of the additional printing device accommodates a support 18 in the center under the cylinders 6 and 16, which has parallel guides 19 on each side, which receive a corresponding movable carriage 20 and 21.
  • the slides 20 and 21 are adjustable using a threaded spindle 22 which is operatively connected to the slides 20 and 21.
  • the spindle 22 also has a lower threaded piece 61 which is operatively connected to a ring gear 62 which is rotatably mounted in the central column 18.
  • a threaded screw 63 is operatively connected to the ring gear 62, which is advantageously driven by a known DC motor (not shown), advantageously by a controllable motor, to which a measuring device, e.g. a rotary encoder or transducer (not shown) is assigned so that the exact position of the slides 20, 21 relative to the column 18 can always be determined.
  • Each carriage 20 or 21 pivots (arrows I, m) about a pivot pin 23 or 24, which is arranged horizontally and is operatively connected to the carriage 20 or 21, on a support 25 or 26.
  • Each carriage 20, 21 also receives on its underside a drive piston 64 and 65, the rod of which acts on the body of the supports 25 and 26.
  • Each support 25 or 26 supports a known inking cylinder, which has a rubber-like casing and is labeled with 27 or 28.
  • the cylinders 27 and 28 interact with other known paint application devices (not shown). The ink is applied to the cylinders 29, 30, e.g.
  • anilox cylinders which are rotatably supported by the supports 25, 26 above the cylinders 27 and 28, which are provided with a rubber jacket, and which in the direction of the arrow (I) and (m) about the axes 23, 24, which are fixedly connected to the sliding carriage 20 and 21, are pivotable.
  • the cylinders 27 and 28 are pivotably received by suitable pins 68 and 69 and holding arms, to which a hydraulic piston, which is identified by 70 and 71, is assigned. Furthermore, each support 25, 26 cooperates with an adjusting screw 72 or 73, which makes it possible to determine the extent of the pivoting movement of the cylinder 27 or 28 relative to the cylinder 29 or 30 lying thereover.
  • the diameter of the printing cylinders 16s, 16d receiving the printing plates corresponds in a known manner to the diameter of the printing cylinders which are used in the previous rotary printing press, therefore it is advantageous to also drive the cylinders 16 via the central drive system of the rotary printing press. This ensures that these cylinders are driven with certainty at the same peripheral speed as the printing cylinders of the previous printing units.
  • Fig. 2 the starting and drive system of the cylinders is shown schematically.
  • the right machine side since the corresponding drive devices for the left machine side are identical.
  • the Counter-pressure cylinder 6 advantageously driven by an independent motor, advantageously a controllable direct current motor, which is identified by 74.
  • the shaft 75 of the motor 74 can be connected to a pair of bevel gears 77 via a mechanical coupling 76 or an electromagnetic coupling.
  • the bevel gears are provided to transmit the drive movement to the impression cylinder 6.
  • the cylinder 6 could also be operatively connected to the main drive system of the machine, but in this case a suitable coupling would have to be interposed.
  • the pin 78 of the cylinder 16d is operatively connected to a displaceable claw 79 which can be connected to a coupling claw 80 which has on its outside a bevel gear 81 which is operatively connected to a bevel gear 82 which is part of the main drive system of the rotary printing press.
  • the pin 78 has an extension 78a with which a clutch disc 83 is assigned, which together with a clutch disc 84, which is operatively connected to the pin 85 of a controllable motor 86, forms a controllable clutch 83, 84, e.g. an electromagnetic clutch.
  • a gear 88 is associated with the pin 87 of the cylinder 30 and is operatively connected to a gear 89 which is fixedly connected to the pin 90 of the cylinder 28.
  • a coupling 91 is also assigned to the pin 87, e.g. a controllable electromagnetic clutch, which makes it possible to connect the pin 87 to the shaft 92 of a controllable motor, which is identified by 93. It has proven to be advantageous to provide a kinematic connection between the pin 78 of the cylinder 30 and the pin 90 of the cylinder 28 using toothed ribs 88 and 89.
  • all motors are advantageously assigned detection means, such as encoders, rotary transducers or similar devices, the signals of which are forwarded to a control panel, not shown in FIG. 2, in accordance with the determined speed.
  • the operation of the machine 1 according to the invention is as follows: the slide 10 is positioned in a predetermined position via the mechanism 57, 58, 59, 60 and the rod 56, and the cylinder 6 is fixed in position with respect to the cylinders 16s and 16d take up the pressure plates.
  • the slide 10 can then be moved by driving the piston P in order to make a fine adjustment of its position.
  • the possible stroke corresponds to the length of the window-like opening 55, which receives the pin 67.
  • the maximum pivoting of the arms 7, which accommodate the impression cylinder 6, is set, so that the inclined position of the arms 7 can be determined when they are moved by hydraulic cylinders 51, 52, which are used to carry out the pivoting movement be available.
  • the slides 25 and 26 are moved upwards by actuating the device 61, 62, 63.
  • the setting and stop screws 66a, 66b are then used to determine the desired pivoting path of the paint application devices when these are applied via the hydraulic cylinders 64, 65 are driven.
  • the maximum pivoting movement of the ink application cylinders 27, 28 is determined via the adjusting screws 72 and 73 when the corresponding bearing arms are driven via the associated hydraulic cylinders 70 and 71.
  • the impression cylinder 6 is also slowly raised to the working speed.
  • the cylinder 16d with the pressure plates is also at working speed ramped up, which corresponds to the rotational speed of the remaining cylinders of the rotary printing press.
  • the clutch 83, 84 is rendered inoperative and the clutch 79 is connected to the clutch 80, the bevel gear 81 of which is operatively connected to the bevel gear 82 which is part of the main drive unit of the rotary printing press.
  • the cylinder 16d is run up to the nominal speed, it is automatically connected to the main drive system of the rotary printing press.
  • the cylinders 30 and 28 of the paint application device 26 are brought up to the desired speed by the rotational movement at a lower rotational speed, with the aid of the motor 93 (or with the aid of the motors 93, 96), and then the cylinder is actuated by actuating the hydraulic cylinder 65 30 in contact with the cylinder 16s.
  • the impression cylinder 6 was moved to the right by actuating the swivel cylinder 51 from the position shown in FIG. 1, and then, by lowering the assembly 10 by a small distance, by actuating the cylinder (P), the impression cylinder 6 and therefore also the paper web with the right cylinder 16d, which receives the printing plates, operatively connected. Then an additional printing operation is carried out using the printing plate cylinder 16d.
  • the printing plate cylinder 16s is at a standstill, the anilox roller 29 and the cylinder 27 provided with a rubber jacket are already rotating slowly and in mutual interaction due to the actuation of the piston 70.
  • the printing ink dries out in the wells of the printing plate avoided.
  • these inking cylinders can be connected to the printing cylinder 16s which receives the printing plates.
  • the piston 64 is actuated.
  • the counter-pressure cylinder 6 is pivoted to the left by reversing the piston 51 and actuating the piston 52 (arrow K), as a result of which the paper web which runs around the counter-pressure cylinder 6 is pressed against the left-hand cylinder 16s of the printing plates, and thus an additional one Printing takes place, but for which the printing plates on the left cylinder 16s are used.
  • the cylinders 28 and 30 are removed from the cylinder 16d of the printing plates, by actuating the corresponding piston 65.
  • the speed of the cylinders 28 and 30 is reduced again to the minimum speed.
  • the coupling device which has connected the right pressure cylinder 16d to the main drive of the machine, is deactivated and the cylinder 16d stops, which makes it possible to remove the pressure plates from the cylinder and to apply new pressure plates for a subsequent additional printing process.
  • the printing cylinders 16s and 16d are designed as gravure cylinders.
  • a known squeegee device 100 and 101 can be assigned to the gravure cylinders 16s and 16d.
  • the squeegee blade 102 and 103 is advantageously used in an upper circumferential region of the cylinders 16s and 16d.
  • Squeegee devices 100 and 101 are known devices which are common in gravure printing technology and therefore do not require any further description.
  • An ink tray 104 and 105 is provided under the gravure cylinders 16s and 16d, in which an ink application roller 106 and 107 is rotatably mounted.
  • the scraped-off amount of ink is fed back via a baffle 108 and 109 into a common collecting tray 110 and 111.
  • the doctor devices 100 and 101 designed to be pivotable in order to enable setting of the doctor blade pressure and easy retraction of the gravure cylinders 16s and 16d.
  • the cylinder 16s is used for the printing process, whereas the right cylinder 16d can be cleaned or exchanged.
  • the embodiment shown in FIG. 4 essentially corresponds to the embodiment shown in FIG. 3 with the difference that the doctor device 100 and 101 is designed in a particularly compact form and the doctor blade 102 and 103 on the lower circumference of the gravure cylinders 16s and 16d for Use.
  • the solvent of the printing ink deposited in the ink cups becomes too volatile and the printing ink dries out, resulting in a lower printing quality 4, it is provided according to FIG. 4 to completely encapsulate the ink application device, as well as the doctor device and the corresponding gravure cylinder, by means of a sheet metal jacket, in order to prevent the solvent from escaping.
  • the encapsulation advantageously consists of a base pan 112, 113, which e.g. is firmly arranged on the machine frame and envelops the ink application device and the corresponding doctor device.
  • a base pan 112, 113 With the upper end of the base trough 112 or 113, sheathing plates 114, 115 and 116 can be attached or detached in a simple manner via plug connections (120, 121, 122).
  • plug connections 120, 121, 122

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Burglar Alarm Systems (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Paper (AREA)

Abstract

An imprinter, particularly for use downstream of a flexographic printing machine, wherein the stubs at the ends of the counterpressure roller which forms part of the web guiding system are suspended on levers. The levers are pivotable about a horizontal axis defined by a pivot member on one or more carriages which are movable in the frame up and down to move the counterpressure cylinder nearer to or further away from two printing cylinders. The printing cylinders flank the counterpressure cylinder and their stubs are removably installed in open-sided sockets which are provided therefor in the sidewalls of the frame. Each printing cylinder receives ink from a discrete source.

Description

Die vorstehende Erfindung betrifft ein Zusatzdruckwerk, z.B. ein zusaetzliches Flexodruckwerk. Vorrichtungen dieser Art werden auch als "Imprinter" bezeichnet und weisen zwei Druckzylinder zur Aufnahme der Druckplatten auf, die abwechselnd und selektiv zur Erstellung von zusaetzlichen Eindrucken in eine Papierbahn oder aehnliches Material dienen, das um eine Gegendruckrolle bewegt wird.The above invention relates to an auxiliary printing unit, e.g. an additional flexographic printing unit. Devices of this type are also referred to as "imprinters" and have two printing cylinders for receiving the printing plates, which alternately and selectively serve to create additional impressions in a paper web or similar material which is moved around a counterpressure roller.

Diese Zusatzdruckvorrichtungen, z.B. in Form einer zusaetzlichen Flexodruckvorrichtung der beschriebenen Art, finden meistens Einsatz in Rotationsdruckmaschinen, wo derartige Zusatzvorrichtungen am Auslauf der Hauptmaschine angeordnet sind. Diese Zusatzdruckeinrichtungen (Imprinter) sind meistens mit zwei Druckzylindern, die die Druckplatten aufnehmen, ausgeruestet. Jedem Druckzylinder ist z.B. ein Anilox-Zylinder sowie eine Gummirolle, die fuer einwandfreien Farbauftrag sorgt, zugeordnet. Selektiv wird einer der Druckzylinder, der die Druckplatten aufweist, mit der Papierbahn in Verbindung gebracht, die sich um einen Umfangsteil des fest angeordneten Gegendruckzylinders bewegt. Damit wird die Moeglichkeit geschaffen, in die vorbeilaufende Papierbahn zusaetzliche Eindrucke einzubringen, die z.B. nur fuer eine Spezialausgabe vorzusehen sind oder nur in eine bestimmte Lokalausgabe der Druckschrift einzudrucken sind.These additional printing devices, e.g. in the form of an additional flexographic printing device of the type described, are mostly used in rotary printing presses, where such additional devices are arranged at the outlet of the main machine. These additional printing devices (imprinters) are usually equipped with two printing cylinders that hold the printing plates. Each printing cylinder is e.g. an anilox cylinder and a rubber roller, which ensures perfect paint application. One of the printing cylinders, which has the printing plates, is selectively connected to the paper web, which moves around a peripheral part of the fixedly arranged impression cylinder. This creates the possibility of introducing additional impressions into the passing paper web, e.g. to be provided only for a special edition or to be printed only in a specific local edition of the publication.

Diese Zusatzvorrichtungen (Imprinter) haben sich als vorteilhaft bei der Durchfuehrung von zusaetzlichen Eindrucken erwiesen, wenn diese fuer eine begrenzte Anzahl von Druckschriften in der Gesamtauflage erfolgen. Durch Vorsehen einer zusaetzlichen Druckvorrichtung der genannten Art (Imprinter), der mit zwei Druckzylindern ausgeruestet ist, die die Druckplatten aufnehmen, ist es moeglich unterschiedliche, zusaetzliche Eindrucke oder zusaetzliche Eindrucke mit unterschiedlicher Farbe vorzunehmen.These additional devices (imprinters) have proven to be advantageous when carrying out additional impressions if these are to be made for a limited number of printed publications in the total print run. By providing an additional printing device of the type mentioned (imprinter), which is equipped with two printing cylinders that hold the printing plates, it is possible to make different, additional impressions or additional impressions with different colors.

Der Nachteil der bekannten Imprinter dieser Art besteht darin, dass die Drehgeschwindigkeit der Druckzylinder, deren Durchmesser veraenderlich ist, einwandfrei mit der Umlaufgeschwindigkeit des Gegendruckzylinders, um den sich das zu bedrukkende Materialband bewegt, und der vom Hauptantriebssystem der Druckmaschine angetrieben wird, zu synchronisieren ist. Aus diesem Grunde ist es in den bekannten Vorrichtungen der genannten Art bei einem Wechsel des Durchmessers der Druckzylinder, die die Druckplatten aufnehmen, erforderlich, eine betraechtliche Anzahl von Antriebszahnraedern mit den dazugehoerigen Kugellagern im Inneren des Maschinengestelles des Imprinters zu demontieren, um eine Synchronisierung der Umfangsgeschwindigkeit durch Austausch dieser Zahnraeder zu erzielen und somit die Drehgeschwindigkeit der Druckzylinder, die die Druckplatten aufnehmen, an die Drehgeschwindigkeit des Gegendruckzylinders anzupassen. Zur Durchfuehrung dieses mechanischen Eingriffes, der einen nicht zu unterschaetzenden Aufwand mit sich bringt, ist das Einwirken von mehreren-fachlich geschulten Personen notwendig; diese benoetigen mehrere Stunden fuer die Umbauarbeiten, und waehrend der Dauer dieser Umbauarbeiten ist die zusaetzliche Druckvorrichtung (Imprinter) nicht einsetzbar.The disadvantage of the known imprinters of this type is that the rotational speed of the printing cylinder, whose diameter is variable, can be perfectly synchronized with the rotational speed of the impression cylinder, around which the material strip to be printed moves and which is driven by the main drive system of the printing press. For this reason, in the known devices of the type mentioned, when changing the diameter of the printing cylinders that receive the printing plates, it is necessary to dismantle a considerable number of drive sprockets with the associated ball bearings inside the machine frame of the imprinter in order to synchronize the peripheral speed to achieve by replacing these gears and thus adapt the speed of rotation of the printing cylinders that receive the printing plates to the speed of rotation of the impression cylinder. In order to carry out this mechanical intervention, which involves an effort that should not be underestimated, it is necessary to have several specialists trained in it; these require several hours for the conversion work, and the additional pressure device (imprinter) cannot be used during the duration of this conversion work.

Ein weiterer Nachteil, der den bekannten Zusatzdruckvorrichtungen anhaftet, ist darin zu sehen, dass das Ausfahren, sowie das Einfahren der Druckzylinder, die die Druckplatten aufnehmen, ein aeusserst arbeitsaufwendiger Vorgang ist. Dieser Vorgang kann ferner nicht mit einfachen Mitteln und einem Minimum an Zeit durchgefuehrt werden.Another disadvantage that is associated with the known additional printing devices is the fact that extending and retracting the printing cylinders, which hold the printing plates, is an extremely labor-intensive process. Furthermore, this process cannot be carried out with simple means and with a minimum of time.

Der Schrift GB-A-184987 kann als bekannter Stand der Technik eine Druckvorrichtung entnommen werden, in der die zu bedruckende Materialbahn ueber einen von Hand betaetigbaren Gegendruckzylinder wahlweise, mit von Hand zu betaetigenden Zusatzdruckzylindern in Wirkverbindung bringbar ist. Diesen zusaetzlich aktivierbaren Druckzylindern ist eine einzige Farbauftragsvorrichtung zugeordnet. Es kann nur ein einfarbiger Druckvorgang durchgefuehrt werden.GB-A-184987, a known prior art, shows a printing device in which the material web to be printed can optionally be brought into operative connection with an additional pressure cylinder that can be operated by hand. A single ink application device is assigned to these additionally activatable printing cylinders. Only a single color printing process can be carried out.

Bei der bekannten Vorrichtung sind ferner die Zusatzdruckzylinder ueber der zu bedruckenden Papierbahn angeordnet, was die Verschmutzungsgefahr der Papierbahn sowie eine Beschaedigung derselben bei Austausch der Zusatzdruckzylinder mit sich bringt.In the known device, the additional printing cylinders are also arranged above the paper web to be printed, which entails the risk of contamination of the paper web and damage to the same when the additional printing cylinders are replaced.

Die Vorsehung des Farbwerkes ueber der zu bedruckenden Papierbahn hat sich bei der bekannt gewordenen Ausfuehrungsform als weiterer Nachteil erwiesen, da abtropfende Druckfarbe zu einer Beschaedigung der Papierbahn fuehren kann.The provision of the inking unit above the paper web to be printed has proven to be a further disadvantage in the embodiment which has become known, since dripping printing ink can damage the paper web.

Aus der Schrift GB-A-2060494 ist eine Vorrichtung bekannt geworden, die als artfremd anzusehen ist.From GB-A-2060494 a device has become known which is to be regarded as a stranger.

Es handelt sich bei dieser Vorrichtung nicht um ein Zusatzdruckwerk, mit dem unterschiedliche Druckbilder in einer einzigen Papierbahn erstellen werden koennten, sondern um eine Einrichtung, die mit einem Druckzylinder ausgeruestet ist, mit dem wahlweise, nach Durchfuehrung einer Schwenkbewegung, eine erste zum Probedruck vorgesehene Materialbahn bzw. eine zweite fuer den tatsaechlichen Druckvorgang bestimmte Materialbahn mit dem Druckzylinder in Wirkverbinduung gebracht werden koennen. Die bekannte Vorrichtung dient also nicht zum wahlweisen Bedrucken einer einzigen Papierbahn unter Verwendung von zwei unterschiedlichen Druckzylindern, sondern es handelt sich um eine Einrichtung, in der wahlweise unter Verwendung eines einzigen Druckzylinders zwei unterschiedliche Materialbahnen bedruckt werden koennen.This device is not an additional printing unit with which different print images could be created in a single paper web, but rather a device which is equipped with a printing cylinder with which, after a swiveling movement, optionally a first material web is provided for test printing or a second material web intended for the actual printing process can be brought into operative connection with the printing cylinder. The known device is therefore not used for the optional printing of a single paper web using two different printing cylinders, but it is a device in which optionally under Two different material webs can be printed using a single printing cylinder.

Aufgabe der vorstehenden Erfindung ist es, die Nachteile des Standes der Technik zu vermeiden und eine neue Zusatzdruckvorrichtung (Imprinter) der genannten Art vorzuschlagen, die einen sehr schnellen Austausch der Druckzylinder mit den Druckplatten ermoeglicht, und die Verwendung von Druckzylindern erlaubt, die unterschiedlichen Durchmesser haben, dass ferner ein schnelles Anfahren des Druckvorganges moeglich ist, und kein mechanischer Eingriff notwendig ist, und dass ferner die Moeglichkeit gegeben wird, eine einfache Registrierung und Einstellung, sowie ein rasches Anfahren der Druckzylinder durchzufuehren.The object of the above invention is to avoid the disadvantages of the prior art and to propose a new additional printing device (imprinter) of the type mentioned, which enables the printing cylinders to be exchanged very quickly with the printing plates, and permits the use of printing cylinders with different diameters that a quick start of the printing process is possible, and no mechanical intervention is necessary, and that there is also the possibility to carry out a simple registration and adjustment, as well as a quick start of the printing cylinder.

Die erfindungsgemaessen Aufgaben werden dadurch geloest, dass die Enden des Gegendruckzylinders im unteren Ende von Schwenkarmen gelagert sind, deren obere Enden mit einer horizontal angeordneten Schwenkachse verbunden sind, und die Schwenkachse eines jeden Schwenkarmes mit einer schlittenartigen Vorrichtung verbunden ist, und jede schlittenartige Vorrichtung gegenueber den Seitenteilen des Maschinengestelles auf und ab verfahrbar gelagert ist, und der Gegendruckzylinder zwischen zwei darunterliegenden, horizontal angeordneten und austauschbaren Druckzylindern, die Druckplatten aufnehmen, angeordnet ist.The objects according to the invention are achieved in that the ends of the impression cylinder are mounted in the lower end of swivel arms, the upper ends of which are connected to a horizontally arranged swivel axis, and the swivel axis of each swivel arm is connected to a sled-like device, and each sled-like device opposite the Side parts of the machine frame is movably mounted up and down, and the impression cylinder is arranged between two underlying, horizontally arranged and interchangeable printing cylinders that receive printing plates.

Mit besonderem Vorteil weisen die Seitenteile des Maschinengestelles seitliche Ausnehmungen auf, die von der Aussenseite der Maschinen zugaengig sind, und Lagersitze fuer die Aufnahme der Lagerzapfen mit den dazugehoerigen Kugellagern der Druckzylinder bilden.With particular advantage, the side parts of the machine frame have lateral recesses which are accessible from the outside of the machines and form bearing seats for receiving the bearing journals with the associated ball bearings of the pressure cylinders.

Es hat sich ferner als vorteilhaft erwiesen, dass unter den Druckzylindern die die Druckplatten aufnehmen, ein nach Art eines Schlittens auf- und abbewegbarer Support vorgesehen ist. Jeder Schlitten weist unterhalb des Druckzylinders, der die Druckplatten aufnimmt, einen Schwenksupport auf, der um eine horizontal angeordnete Achse verschwenkbar angeordnet ist, und ein Farbauftragswerk aufweist, das z.B. aus einem einen Gummimantel aufweisenden Farbauftragszylinder besteht, der mit einem Anilox-Zylinder in Wirkverbindung steht, der dem Druckzylinder, der die Druckplatten aufnimmt, zugeordnet ist.It has also proven to be advantageous that a support that can be moved up and down in the manner of a slide is provided under the printing cylinders that hold the printing plates. Each carriage has a swivel support below the printing cylinder, which receives the printing plates, which is arranged to be pivotable about a horizontally arranged axis, and has an inking unit which, e.g. consists of an inking cylinder having a rubber jacket, which is operatively connected to an anilox cylinder, which is assigned to the printing cylinder which receives the printing plates.

Weitere Ausfuehrungsformen der Erfindung koennen der nun folgenden Beschreibung, den Unteranspruechen und den Zeichnungen entnommen werden.:

  • Es zeigen:
    • Fig. 1 schematisch in Seitenansicht die Zusatzdruckvorrichtung gemaess der vorstehenden Erfindung;
    • Fig. 2 schematisch die Zylinder einer Druckeinheit und Farbauftragsvorrichtung mit den dazugehoerigen Bauteilen zum Ankuppeln und Antreiben der Vorrichtung;
    • Fig. 3 eine Zusatzdruckvorrichtung, die mit zwei Tiefdruckdruckwerken ausgeruestet ist;
    • Fig. 4 eine weitere Ausfuehrungsform der Zusatzdruckvorrichtung mit gekapselten Tiefdruckwerken.
Further embodiments of the invention can be found in the following description, the subclaims and the drawings:
  • Show it:
    • Fig. 1 shows schematically in side view the additional printing device according to the above invention;
    • 2 shows schematically the cylinders of a printing unit and ink application device with the associated components for coupling and driving the device;
    • 3 shows an additional printing device which is equipped with two gravure printing units;
    • Fig. 4 shows another embodiment of the additional printing device with encapsulated gravure printing units.

Die erfindungsgemaesse Vorrichtung (Imprinter) weist zwei seitlich angeordnete Maschinengestelle oder Wangen auf, die gesamthaft mit 1 bezeichnet sind.The device (imprinter) according to the invention has two laterally arranged machine frames or cheeks, all of which are designated by 1.

Das Papierband 2 wird unter Zuhilfenahme einer Ausgleichsrolle 3 und mittels Fuehrungsrollen 4 und 5 um einen Gegendruckzylinder 6 gefuehrt, wobei sich das Papierband in Richtung des Pfeiles (f) bewegt.The paper tape 2 is guided with the aid of a compensating roller 3 and by means of guide rollers 4 and 5 around an impression cylinder 6, the paper tape moving in the direction of arrow (f).

Jedes Ende des Gegendruckzylinders 6 ist als Lagerzapfen 6a ausgebildet, der jeweils von einem Arm 7 aufgenommen wird, der um eine horizontal angeordnete Schwenkachse 8 verschwenkbar ist.Each end of the impression cylinder 6 is designed as a bearing journal 6a, which is received by an arm 7, which can be pivoted about a horizontally arranged pivot axis 8.

In vorteilhafter Weise, um dem Gegendruckzylinder 6, sowie den zugeordneten Aufnahmearmen 7 eine kontrollierbare Schwenkbewegung in Richtung des Doppelpfeiles (k) zu verleihen, ist auf jeder Seite eines jeden Schwenkarmes 7 mit dem Maschinengestell 13 eine hydraulische, steuerbare Kolben-Zylindereinheit 51 bzw. 52, angeordnet. Die Kolbenstangen jeder Kolben-Zylindereinheit wirken auf die entsprechende Seitenflaeche des entsprechenden Schwenkarmes 7 ein. Um mit Genauigkeit die "verschwenkte" Stellung des Zylinders 6 gegenueber den auswechselbaren Druckzylindern, die in Fig. 1 mit 16s (links) und 16d (rechts) gekennzeichnet sind, festlegen zu koennen, ist vorgesehen, dass diesen Schwenkarmen 7 Anschlag- und Einstellschrauben 53 bzw. 54 zugeordnet sind, wie dies schematisch in der Fig. 1 darstellt, ist. Diese Schrauben dienen als registrierbare Anschlaege.In order to give the counter-pressure cylinder 6 and the associated receiving arms 7 a controllable pivoting movement in the direction of the double arrow (k), there is a hydraulic, controllable piston-cylinder unit 51 or 52 on each side of each pivot arm 7 with the machine frame 13 , arranged. The piston rods of each piston-cylinder unit act on the corresponding side surface of the corresponding swivel arm 7. In order to be able to determine with precision the "pivoted" position of the cylinder 6 with respect to the exchangeable pressure cylinders, which are marked 16s (left) and 16d (right) in FIG. 1, it is provided that these pivot arms 7 stop and adjusting screws 53 or 54 are assigned, as is shown schematically in FIG. 1. These screws serve as recordable stops.

Jeder Schwenkarm 7 ist mit einem Ende (Nabe) von einem Schlitten 10 aufgenommen, der in Vertikalrichtung verschiebbar angeordnet ist und zu diesem Zweck von Parallelfuehrungen 11 aufgenommen wird. Unter Zuhilfenahme eines steuerbaren Antriebmotors (nicht dargestellt) und/oder unter Zuhilfenahme eines Hydraulikzylinders oder eines Pneumatikzylinders (P), kann der Schlitten 10 um einen geringen, beschraenkten Betrag nach oben oder nach unten verschoben werden, wie dies durch den Pfeil (g) dargestellt ist.Each swivel arm 7 is received at one end (hub) by a slide 10 which is arranged so as to be displaceable in the vertical direction and is received by parallel guides 11 for this purpose. With the aid of a controllable drive motor (not shown) and / or with the aid of a hydraulic cylinder or a pneumatic cylinder (P), the carriage 10 can be moved up or down by a small, limited amount, as shown by the arrow (g) is.

Um den Schlitten 10 und somit den Gegendruckzylinder 6 in der gewuenschten Arbeitsstellung blockieren zu koennen, ist wenigstens einer Fuehrung 11 eine Spannvorrichtung zugeordnet, z.B. eine hydraulische Blockiervorrichtung, die in vorteilhafter Weise aus einer Anzahl von Hydraulikkolben 12 besteht, die den Schlitten 10 in der gewuenschten Lage zwischen den Fuehrungen 11 blockieren. Die eingenommene Lage ist vom Durchmesser des die Druckplatten aufnehmenden Druckzylinders 6 abhaengig. Mit dem genannten Kolben (P), in vorteilhafter Weise einem Pneumatikkolben, kann dem Schlitten 10 und somit dem Zylinder eine kleine Hubbewegung in Richtung des Pfeiles (g) verliehen werden. Diese Hubbewegung entspricht der Weite einer fensterartigen Oeffnung 55, die in das Ende einer Gewindestange 56 eingearbeitet ist. Die fensterartige Oeffnung 55 ist mit einem Zylinderstift 67 verbunden, der einstueckig mit dem Schlitten 10 verbunden ist. Der Zylinderstift kann eine ungehinderte Verschiebebewegung in der fensterartigen Oeffnung 55 durchfuehren.In order to be able to block the carriage 10 and thus the impression cylinder 6 in the desired working position, at least one guide 11 is assigned a tensioning device, for example a hydraulic blocking device, which advantageously consists of a number of hydraulic pistons 12 which the carriage 10 in the desired Block the position between the guides 11. The position taken is from Diameter of the printing cylinder 6 receiving the printing plates depending. With the piston (P) mentioned, advantageously a pneumatic piston, the slide 10 and thus the cylinder can be given a small stroke movement in the direction of the arrow (g). This stroke movement corresponds to the width of a window-like opening 55 which is incorporated in the end of a threaded rod 56. The window-like opening 55 is connected to a cylindrical pin 67 which is connected in one piece to the slide 10. The cylinder pin can carry out an unimpeded sliding movement in the window-like opening 55.

Die Stange 56 ist in vorteilhafter Weise als Stange ausgebildet, die ein mit einem Gewinde versehenes Ende 57 aufweist, das mit einem Innengewinde 58 eines Zahnkranzes 59 in Wirkverbindung steht, der drehbar im Inneren einer mittig angeordneten Saeule 18 vorgesehen ist. Mit dem Zahnkranz 59 steht eine Gewindeschnecke 60 in Wirkverbindung, die in vorteilhafter Weise durch einen steuerbaren Motor (nicht dargestellt), in vorteilhafter Weise durch einen Gleichstrommotor, angetrieben wird. Ferner, zum genauen Positionieren des Zylinders 6, ist dem steuerbaren Motor ein drehbarer Encoder oder ein aehnliches Mittel zugeordnet, um dadurch mit Genauigkeit die Lage des Gegendruckzylinders 6 gegenueber den Zylindern 16s und 16d festlegen zu koennen.The rod 56 is advantageously designed as a rod which has a threaded end 57 which is operatively connected to an internal thread 58 of a toothed ring 59 which is rotatably provided in the interior of a centrally arranged column 18. A threaded worm 60 is operatively connected to the ring gear 59, which is advantageously driven by a controllable motor (not shown), advantageously by a direct current motor. Furthermore, for the exact positioning of the cylinder 6, the controllable motor is assigned a rotatable encoder or a similar means, in order thereby to be able to determine with precision the position of the counter-pressure cylinder 6 with respect to the cylinders 16s and 16d.

Jede Seitenwand 13 des Imprinters 11 weist unter dem Gegendruckzylinder 6 Aufnahmeoeffnungen 14 auf, die ein einfaches Einfuehren der Lagerzapfen 15 des Zylinder 16s und 16d, die austauschbar sind und die Druckplatten tragen, ermoeglicht. Die Zapfen 15 sind in bekannter Weise mit Kugellagern bestueckt und werden in ihrer Arbeitslage festgespannt, z.B. unter Verwendung bekannter Spannbuegel 17, die hydraulisch oder mit mechanischen Spannmitteln festlegbar sind.Each side wall 13 of the imprinter 11 has, under the impression cylinder 6, receiving openings 14, which enable simple insertion of the bearing journals 15 of the cylinders 16s and 16d, which are interchangeable and carry the pressure plates. The pins 15 are equipped in a known manner with ball bearings and are clamped in their working position, e.g. using known clamps 17, which can be fixed hydraulically or with mechanical clamping means.

Das Gestell 1 der Zusatzdruckvorrichtung (Imprinter) nimmt unter den Zylindern 6 und 16 mittig einen Support 18 auf, der auf jeder Seite Parallelfuehrungen 19 aufweist, die einen entsprechenden verfahrbaren Schlitten 20 und 21 aufnehmen. Die Schlitten 20 und 21 sind unter Verwendung einer Gewindespindel 22, die mit den Schlitten 20 und 21 wirkverbunden ist, verstellbar. Die Spindel 22 weist ferner ein unteres Gewindestueck 61 auf, das mit einem Zahnkranz 62 in Wirkverbindung steht, der in der mittigen Saeule 18 drehbar gelagert ist. Mit dem Zahnkranz 62 steht eine Gewindeschnecke 63 in Wirkverbindung, die in vorteilhafter Weise ueber einen bekannten Gleichstrommotor (nicht dargestellt), in vorteilhafter Weise ueber einen steuerbaren Motor, angetrieben wird, dem eine Messvorrichtung, z.B. ein Drehencoder oder Transduktor (nicht dargestellt) zugeordnet ist, um somit stets die genaue Lage der Schlitten 20, 21 gegenueber der Saeule 18 feststellen zu koennen.The frame 1 of the additional printing device (imprinter) accommodates a support 18 in the center under the cylinders 6 and 16, which has parallel guides 19 on each side, which receive a corresponding movable carriage 20 and 21. The slides 20 and 21 are adjustable using a threaded spindle 22 which is operatively connected to the slides 20 and 21. The spindle 22 also has a lower threaded piece 61 which is operatively connected to a ring gear 62 which is rotatably mounted in the central column 18. A threaded screw 63 is operatively connected to the ring gear 62, which is advantageously driven by a known DC motor (not shown), advantageously by a controllable motor, to which a measuring device, e.g. a rotary encoder or transducer (not shown) is assigned so that the exact position of the slides 20, 21 relative to the column 18 can always be determined.

Jeder Schlitten 20 bzw. 21 nimmt verschwenkbar (Pfeile I, m) um einen Schwenkbolzen 23 bzw. 24, der horizontal angeordnet ist und mit dem Schlitten 20 bzw. 21 wirkverbunden ist, einen Support 25 bzw. 26 auf. Jeder Schlitten 20, 21 nimmt ferner an seiner Unterseite einen Antriebskolben 64 bzw. 65 auf, dessen Stange auf den Koerper der Supporte 25 und 26 einwirkt.Each carriage 20 or 21 pivots (arrows I, m) about a pivot pin 23 or 24, which is arranged horizontally and is operatively connected to the carriage 20 or 21, on a support 25 or 26. Each carriage 20, 21 also receives on its underside a drive piston 64 and 65, the rod of which acts on the body of the supports 25 and 26.

Diese Supporte weisen ueber den Schwenkachsen 23 und 24 einstellbare Registrier- und Anschlagschrauben 66a, 66b auf, mit denen es moeglich ist, die maximale Schwenkbewegung der genannten Supporte 25, 26 um die Achsen 23, 24 festzulegen. Jeder Support 25 bzw. 26 lagert einen bekannten Farbauftragszylinder, der eine gummiartige Ummantelung aufweist und mit 27 bzw. 28 gekennzeichnet ist. Die Zylinder 27 und 28 wirken mit weiteren bekannten Farbauftragsvorrichtungen (nicht dargestellt) zusammen. Ueber die Farbauftragszylinder 27 und 28 wird die Druckfarbe an die Zylinder 29, 30, z.B. an bekannte Anilox-Zylinder weitergeleitet, die drehbar ueber den Zylindern 27 und 28, die mit einem Gummimantel versehen sind, durch die Supporte 25, 26 gelagert sind, und die in Richtung des Pfeils (I) und (m) um die Achsen 23, 24, die fest mit den verschiebbaren Schlitten 20 und 21 verbunden sind, verschwenkbar sind.These supports have adjustable registration and stop screws 66a, 66b via the pivot axes 23 and 24, with which it is possible to determine the maximum pivoting movement of the supports 25, 26 mentioned about the axes 23, 24. Each support 25 or 26 supports a known inking cylinder, which has a rubber-like casing and is labeled with 27 or 28. The cylinders 27 and 28 interact with other known paint application devices (not shown). The ink is applied to the cylinders 29, 30, e.g. forwarded to known anilox cylinders, which are rotatably supported by the supports 25, 26 above the cylinders 27 and 28, which are provided with a rubber jacket, and which in the direction of the arrow (I) and (m) about the axes 23, 24, which are fixedly connected to the sliding carriage 20 and 21, are pivotable.

Mit besonderem Vorteil sind die Zylinder 27 und 28 schwenkbar durch geeigneten Zapfen 68 und 69 und Haltearmen aufgenommen, denen ein Hydraulikkolben, der mit 70 bzw. 71 gekennzeichnet ist, zugeordnet ist. Ferner arbeitet jeder Support 25, 26 mit einer Einstellschraube 72 bzw. 73 zusammen, die es erlaubt, das Ausmass der Schwenkbewegung des Zylinders 27 bzw. 28 gegenueber dem darueberliegenden Zylinder 29 oder 30, festzulegen.The cylinders 27 and 28 are pivotably received by suitable pins 68 and 69 and holding arms, to which a hydraulic piston, which is identified by 70 and 71, is assigned. Furthermore, each support 25, 26 cooperates with an adjusting screw 72 or 73, which makes it possible to determine the extent of the pivoting movement of the cylinder 27 or 28 relative to the cylinder 29 or 30 lying thereover.

Der Durchmesser der die Druckplatten aufnehmenden Druckzylinder 16s, 16d, entspricht in bekannter Weise dem Durchmesser der Druckzylinder, die in der vorangegangenen Rotationsdruckmaschine Verwendung finden, daher ist es vorteilhaft, auch die Zylinder 16 ueber das zentrale Antriebssystem der Rotationsdruckmaschine anzutreiben. Somit wird gewaehrleistet, dass diese Zylinder mit Sicherheit mit der gleichen Umfangsgeschwindigkeit wie die Druckzylinder der vorangegangen Druckwerke angetrieben werden.The diameter of the printing cylinders 16s, 16d receiving the printing plates corresponds in a known manner to the diameter of the printing cylinders which are used in the previous rotary printing press, therefore it is advantageous to also drive the cylinders 16 via the central drive system of the rotary printing press. This ensures that these cylinders are driven with certainty at the same peripheral speed as the printing cylinders of the previous printing units.

In Fig. 2 ist schematisch das Anlauf- und Antriebssystem der Zylinder dargestellt, Hier erfolgt eine Beschraenkung auf die rechte Maschinenseite, da die entsprechenden Antriebsvorrichtungen fuer die linke Maschinenseite identisch ausgebildet sind.In Fig. 2, the starting and drive system of the cylinders is shown schematically. Here there is a limitation to the right machine side, since the corresponding drive devices for the left machine side are identical.

Wie der Fig. 2 zu entnehmen ist, wird der Gegendruckzylinder 6 in vorteilhafter Weise von einem unabhaengigen Motor angetrieben, in vorteilhafter Weise einem steuerbaren Gleichstrommotor, der mit 74 gekennzeichnet ist.As can be seen from FIG. 2, the Counter-pressure cylinder 6 advantageously driven by an independent motor, advantageously a controllable direct current motor, which is identified by 74.

Die Welle 75 des Motors 74 ist ueber eine mechanische Kupplung 76 oder eine elektromagnetische Kupplung mit einem Paar Kegelzahnraeder 77 verbindbar. Die Kegelzahnraeder sind dazu vorgesehen, die Antriebsbewegung an den Gegendruckzylinder 6 zu uebertragen. In naheliegender Weise, koennte der Zylinder 6 auch mit dem Hauptantriebssystem der Maschine wirkverbunden sein, in diesem Fall waere jedoch eine geeignete Kupplung zwischenzuschalten.The shaft 75 of the motor 74 can be connected to a pair of bevel gears 77 via a mechanical coupling 76 or an electromagnetic coupling. The bevel gears are provided to transmit the drive movement to the impression cylinder 6. Obviously, the cylinder 6 could also be operatively connected to the main drive system of the machine, but in this case a suitable coupling would have to be interposed.

Der Zapfen 78 des Zylinders 16d ist mit einer verschiebbaren Klaue 79 wirkverbunden, die mit einer Kupplungsklaue 80 verbindbar ist, die an ihrer Aussenseite ein Kegelzahnrad 81 aufweist, das mit einem Kegelzahnrad 82 in Wirkverbindung steht, welches Bestandteil des Hauptantriebssystems der Rotationsdruckmaschine ist.The pin 78 of the cylinder 16d is operatively connected to a displaceable claw 79 which can be connected to a coupling claw 80 which has on its outside a bevel gear 81 which is operatively connected to a bevel gear 82 which is part of the main drive system of the rotary printing press.

Der Zapfen 78 weist eine Verlaengerung 78a auf, der eine Kupplungsscheibe 83 zugeordnet ist, die zusammen mit einer Kupplungsscheibe 84, die mit dem Zapfen 85 eines steuerbaren Motors 86 wirkverbunden ist, eine steuerbare Kupplung 83,84 bildet, z.B. eine elektromagnetische Kupplung.The pin 78 has an extension 78a with which a clutch disc 83 is assigned, which together with a clutch disc 84, which is operatively connected to the pin 85 of a controllable motor 86, forms a controllable clutch 83, 84, e.g. an electromagnetic clutch.

Dem Zapfen 87 des Zylinders 30 ist ein Zahnrad 88 zugeordnet, das mit einem Zahnrad 89 in Wirkverbindung steht, das fest mit dem Zapfen 90 des Zylinders 28 verbunden ist.A gear 88 is associated with the pin 87 of the cylinder 30 and is operatively connected to a gear 89 which is fixedly connected to the pin 90 of the cylinder 28.

Dem Zapfen 87 ist ferner eine Kupplung 91 zugeordnet, z.B. eine steuerbare elektromagnetische Kupplung, die es ermoeglicht, den Zapfen 87 mit der Welle 92 eines steuerbaren Motores, der mit 93 gekennzeichnet ist, zu verbinden. Es hat sich als vorteilhaft erwiesen, eine kinematische Verbindung zwischen dem Zapfen 78 des Zylinders 30 und dem Zapfen 90 des Zylinders 28 unter Verwendung von Zahnrippen 88 und 89 vorzusehen. Es koennte jedoch auch vorteilhaft sein, auf die Verbindung mittels, Zahnraedern 88 und 89 zu verzichten und in diesem Falle vorzusehen, dass der Verlaengerung des Zapfens 90 eine steuerbare Kupplung zugeordnet wird, in vorteilhafter Weise eine elektromagnetische Kupplung 94, die mit dem Zapfen 95 eines weiteren steuerbaren Antriebmotores 96 wirkverbunden ist, der gleich dem mit 93 gekennzeichneten Motor ist. Dieses zweite Ausfuehrungsbeispiel ist in Fig. 2 mit Strichpunktlinien dargestellt.A coupling 91 is also assigned to the pin 87, e.g. a controllable electromagnetic clutch, which makes it possible to connect the pin 87 to the shaft 92 of a controllable motor, which is identified by 93. It has proven to be advantageous to provide a kinematic connection between the pin 78 of the cylinder 30 and the pin 90 of the cylinder 28 using toothed ribs 88 and 89. However, it could also be advantageous to dispense with the connection by means of toothed wheels 88 and 89 and, in this case, to provide that the extension of the pin 90 is assigned a controllable clutch, advantageously an electromagnetic clutch 94 which is connected to the pin 95 further controllable drive motor 96 is operatively connected, which is the same as the motor marked 93. This second exemplary embodiment is shown in FIG. 2 with broken lines.

Um die genaue Drehzahl der Motoren 74, 86; 93 und 96 feststellen zu koennen, z.B. an einem entfernt liegenden Steuerpult, sind in vorteilhafter Weise allen Motoren Erfassungsmittel, wie Encoder, Drehtransduktoren oder aehnliche Einrichtungen zugeordnet, deren Signale, entsprechend der festgestellten Drehzahl an ein in Fig. 2 nicht dargestelltes Steuerpult weitergeleitet werden.To the exact speed of the motors 74, 86; 93 and 96, e.g. on a remote control panel, all motors are advantageously assigned detection means, such as encoders, rotary transducers or similar devices, the signals of which are forwarded to a control panel, not shown in FIG. 2, in accordance with the determined speed.

Die Funktionsweise der erfindungsgemaessen Maschine 1 ist folgende: Ueber den Mechnismus 57, 58, 59, 60 und die Stange 56 wird der Schlitten 10 in einer vorbestimmten Lage positioniert, und es erfolgt ein lagemaessiges Festlegen des Zylinders 6 gegenueber den Zylindern 16s und 16d, die die Druckplatten aufnehmen.The operation of the machine 1 according to the invention is as follows: the slide 10 is positioned in a predetermined position via the mechanism 57, 58, 59, 60 and the rod 56, and the cylinder 6 is fixed in position with respect to the cylinders 16s and 16d take up the pressure plates.

Im Anschluss daran kann der Schlitten 10 durch Antrieb des Kolbens P verfahren werden, um eine Feineinstellung seiner Lage vorzunehmen. Der moegliche Hub entspricht der Laenge der fensterartigen Oeffnung 55, die den Stift 67 aufnimmt.The slide 10 can then be moved by driving the piston P in order to make a fine adjustment of its position. The possible stroke corresponds to the length of the window-like opening 55, which receives the pin 67.

Ueber die Einstellschrauben 53 und 54 wird die maximale Verschwenkung der Arme 7, die den Gegendruckzylinder 6 aufnehmen, festgelegt, um damit die geneigte Lage der Arme 7 festlegen zu koennen, wenn diese von Hydraulikzylindern 51, 52 verschoben werden, die fuer die Durchfuehrung der Schwenkbewegung zur Verfuegung stehen.About the adjusting screws 53 and 54, the maximum pivoting of the arms 7, which accommodate the impression cylinder 6, is set, so that the inclined position of the arms 7 can be determined when they are moved by hydraulic cylinders 51, 52, which are used to carry out the pivoting movement be available.

Gleichzeitig erfolgt eine nach oben gerichtete Verschiebebewegung der Schlitten 25 und 26, durch Betaetigen der Vorichtung 61, 62, 63. Anschliessend erfolgt ueber die Einstell- und Anschlagschrauben 66a, 66b die Festlegung des gewuenschten Verschwenkweges der Farbauftragsvorrichtungen, wenn diese ueber die Hydraulikzylinder 64, 65 angetrieben werden. Ueber die Einstellschrauben 72 und 73 wird die maximale Verschwenkbewegung der Farbauftragszylinder 27, 28 festgelegt, wenn die entsprechenden Lagerarme ueber die zugeordneten Hydraulikzylinder 70 und 71 angetrieben werden.At the same time, the slides 25 and 26 are moved upwards by actuating the device 61, 62, 63. The setting and stop screws 66a, 66b are then used to determine the desired pivoting path of the paint application devices when these are applied via the hydraulic cylinders 64, 65 are driven. The maximum pivoting movement of the ink application cylinders 27, 28 is determined via the adjusting screws 72 and 73 when the corresponding bearing arms are driven via the associated hydraulic cylinders 70 and 71.

Soll z.B. fuer den Druckvorgang der rechte Zylinder 16d mit den Druckplatten zum Einsatz gelangen, so wird nach der durchgefuehrten Voreinstellung wie folgt vorgegangen:

  • Nach Oeffnen der Farbzufuhr werden unter Zuhilfenahme des Motors 93 und der Zahnraeder 88 und 89 (Fig. 2), die Zylinder 28 und 30 der Farbauftragsvorrichtung in Drehbewegung versetzt. Diese Zylinder, um ein Austrocknen der Farbe auf der mit einem Gummimantel versehenen Rolle zu vermeiden, werden staendig mit geringer Drehzahl in Drehbewegung gehalten.
If, for example, the right cylinder 16d with the printing plates is to be used for the printing process, the following is carried out after the presetting carried out:
  • After opening the paint supply, the cylinders 28 and 30 of the paint application device are rotated with the aid of the motor 93 and the toothed wheels 88 and 89 (FIG. 2). These cylinders, in order to prevent the paint from drying out on the roller provided with a rubber jacket, are constantly rotated at a low speed.

Sofern es erwuenscht ist, auf das vorher genannte Zahnradpaar 88, 89 zu verzichten, ist es naheliegend, dass auch die Welle 90 des Zylinders 28 mit einem eigenen steuerbaren Antriebsmotor 96, wie dieser mit Strichpunktlinien dargestellt ist, auszuruesten ist.If it is desired to dispense with the aforementioned gearwheel pair 88, 89, it is obvious that the shaft 90 of the cylinder 28 should also be equipped with its own controllable drive motor 96, as this is shown with broken lines.

Bei Antrieb der Rotationsdruckmaschine wird unter Zuhilfenahme des steuerbaren Motors 74 auch der Gegendruckzylinder 6 langsam bis auf Arbeitsgeschwindigkeit hochgefahren.When the rotary printing press is driven, with the aid of the controllable motor 74, the impression cylinder 6 is also slowly raised to the working speed.

Mit dem Motor 86 und durch Betaetigen der Kupplung 83 und 84, wird auch der Zylinder 16d mit den Druckplatten auf Arbeitsgeschwindigkeit hochgefahren, welche der Drehgeschwindigkeit der verbleibenden Zylinder der Rotationsdruckmaschine entspricht.With the motor 86 and by actuating the clutch 83 and 84, the cylinder 16d with the pressure plates is also at working speed ramped up, which corresponds to the rotational speed of the remaining cylinders of the rotary printing press.

Sobald der Zylinder 16d seine Nenndrehzahl erreicht hat, wird die Kupplung 83, 84 ausser Funktion gebracht und die Kupplung 79 mit der Kupplung 80 verbunden, dessen Kegelzahnrad 81 mit dem Kegelzahnrad 82 in Wirkverbindung steht, die Bestandteil des Hauptantriebsaggregates der Rotationsdruckmaschine ist.As soon as the cylinder 16d has reached its nominal speed, the clutch 83, 84 is rendered inoperative and the clutch 79 is connected to the clutch 80, the bevel gear 81 of which is operatively connected to the bevel gear 82 which is part of the main drive unit of the rotary printing press.

Somit, nachdem der Zylinder 16d auf Nenngeschwindigkeit hochgefahren wurde, wird dieser automatisch mit dem Hauptantriebssystem der Rotationsdruckmaschine verbunden. Die Zylinder 30 und 28 der Farbauftragsvorrichtung 26 werden von der Drehbewegung mit geringerer Drehgeschwindigkeit, unter Zuhilfenahme des Motors 93 (bzw. unter Zuhilfenahme der Motoren 93, 96) auf die gewuenschte Drehzahl hochgefahren, und im Anschluss daran durch Betaetigen des Hydraulikzylinders 65 tritt der Zylinder 30 in Kontakt mit dem Zylinder 16s.Thus, after the cylinder 16d is run up to the nominal speed, it is automatically connected to the main drive system of the rotary printing press. The cylinders 30 and 28 of the paint application device 26 are brought up to the desired speed by the rotational movement at a lower rotational speed, with the aid of the motor 93 (or with the aid of the motors 93, 96), and then the cylinder is actuated by actuating the hydraulic cylinder 65 30 in contact with the cylinder 16s.

In einem vorherigen Vorgang wurde der Gegendruckzylinder 6 durch Betaetigen des Schwenkzylinders 51 aus der in Fig. 1 dargestellten Stellung nach rechts bewegt und im Anschluss, durch Absenken der Baugruppe 10 um einen kleinen Weg, durch Betaetigen des Zylinders (P), wird der Gegendruckzylinder 6 und daher auch die Papierbahn mit dem rechten Zylinder 16d, der die Druckplatten aufnimmt, in Wirkverbindung gebracht. Alsdann erfolgt, unter Verwendung des Druckplattenzylinders 16d ein zusaetzlicher Druckvorgang.In a previous process, the impression cylinder 6 was moved to the right by actuating the swivel cylinder 51 from the position shown in FIG. 1, and then, by lowering the assembly 10 by a small distance, by actuating the cylinder (P), the impression cylinder 6 and therefore also the paper web with the right cylinder 16d, which receives the printing plates, operatively connected. Then an additional printing operation is carried out using the printing plate cylinder 16d.

In dieser Situation steht der Druckplattenzylinder 16s still, die Anilox-Rolle 29 und der mit einem Gummimantel versehene Zylinder 27 befinden sich bereits in langsamer Drehbewegung und in gegenseitiger Wirkverbindung aufgrund der Betaetigung des Kolbens 70. Somit wird ein Austrocknen der Druckfarbe in den Naepfchen der Druckplatte vermieden.In this situation, the printing plate cylinder 16s is at a standstill, the anilox roller 29 and the cylinder 27 provided with a rubber jacket are already rotating slowly and in mutual interaction due to the actuation of the piston 70. Thus, the printing ink dries out in the wells of the printing plate avoided.

Soll ein weiterer, zusaetzlicher Druckvorgang begonnen werden, in dem aber der linke Druckzylinder 16s mit seinen Druckplatten zum Einsatz gelangen soll, wird wie folgt verfahren:

  • Auf dem Zylinder 16s werden neue Druckplatten aufmontiert, und der Zylinder 16s, ueber den ihm zugeordneten Antriebsmotor wird auf Nenndrehzahl gebracht, um anschliessend mit der Hauptantriebsvorrichtung der Rotationsdruckmaschine verbunden zu werden. Gleichzeitig wird der Anilox-Zylinder 29 und der mit einem Gummimantel versehene Zylinder 27 auf Nenndrehzahl gebracht, dies unter Verwendung entsprechender unabhaengiger Motoren. Wenn die Geschwindigkeit des Zylinders 16s der Nominaldrehzahl der Maschine entspricht, erfolgt ein Ankuppeln, worauf der Zylinder 16s mit der Hauptantriebsvorrichtung der Rotationsdruckmaschine verbunden wird. Gleichzeitig erfolgt ein Abkuppeln des Zusatzmotors fuer das Hochfahren des Zylinders.
If a further, additional printing process is to be started, but in which the left printing cylinder 16s with its printing plates is to be used, the procedure is as follows:
  • New printing plates are mounted on the cylinder 16s, and the cylinder 16s, via the drive motor assigned to it, is brought to the nominal speed in order to then be connected to the main drive device of the rotary printing press. At the same time, the anilox cylinder 29 and the cylinder 27 provided with a rubber jacket are brought to nominal speed, using appropriate independent motors. If the speed of the cylinder 16s corresponds to the nominal speed of the machine, coupling takes place, whereupon the cylinder 16s is connected to the main drive device of the rotary printing press. At the same time, the additional motor is decoupled for starting up the cylinder.

Da auch die Farbauftragszylinder 29, 27 dem Beschleunigungsvorgang gefolgt sind können diese Farbauftragszylinder mit dem Druckzylinder 16s, der die Druckplatten aufnimmt, in Verbindung gebracht werden. Zu diesem Zweck wird der Kolben 64 betaetigt.Since the inking cylinders 29, 27 have also followed the acceleration process, these inking cylinders can be connected to the printing cylinder 16s which receives the printing plates. For this purpose the piston 64 is actuated.

Im Anschluss wird der Gegendruckzylinder 6 durch Umsteuern des Kolbens 51 und Betaetigen des Kolbens 52 nach links verschwenkt (Pfeil K), wodurch die Papierbahn, die um den Gegendruckzylinder 6 laeuft, gegen den linken Zylinder 16s der Druckplatten gedrueckt wird, und somit erneut ein zusaetzlicher Druckvorgang erfolgt, fuer den jedoch die Druckplatten auf dem linken Zylinder 16s eingesetzt werden.Subsequently, the counter-pressure cylinder 6 is pivoted to the left by reversing the piston 51 and actuating the piston 52 (arrow K), as a result of which the paper web which runs around the counter-pressure cylinder 6 is pressed against the left-hand cylinder 16s of the printing plates, and thus an additional one Printing takes place, but for which the printing plates on the left cylinder 16s are used.

Im Nachfolgenden werden die Zylinder 28 und 30 vom Zylinder 16d der Druckplatten entfernt, dies durch Betaetigen des entsprechenden Kolbens 65. Die Drehzahl der Zylinder 28 und 30 wird erneut auf Minimalgeschwindigkeit heruntergefahren. Die Kupplungsvorrichtung, die den rechten Druckzylinder 16d mit dem Hauptantrieb der Maschine verbunden hat, wird ausser Betrieb gesetzt und der Zylinder 16d bleibt stehen, wodurch es ermoeglicht wird, die Druckplatten vom Zylinder abzubauen und neue Druckplatten fuer einen darauffolgenden Zusatzdruckvorgang aufzubringen.In the following, the cylinders 28 and 30 are removed from the cylinder 16d of the printing plates, by actuating the corresponding piston 65. The speed of the cylinders 28 and 30 is reduced again to the minimum speed. The coupling device, which has connected the right pressure cylinder 16d to the main drive of the machine, is deactivated and the cylinder 16d stops, which makes it possible to remove the pressure plates from the cylinder and to apply new pressure plates for a subsequent additional printing process.

In der vorangegangen Beschreibung wurde stets auf ein Flexodruckwerk Bezug genommen, mit der erfindungsgemaessen Vorrichtung kann jedoch auch anstelle der Flexodruckzylinder im klassischen Tiefdruckverfahren gearbeitet werden.In the preceding description, reference was always made to a flexographic printing unit, but the device according to the invention can also be used instead of the flexographic printing cylinders in the classic gravure printing process.

Waehrend der Aufbau des Maschine 1, wie bisher beschrieben beibehalten wird, ist fuer die Druckvorrichtung gemaess den Figuren 3 und 4 vorzusehen, dass die Druckzylinder 16s und 16d als Tiefdruckzylinder ausgebildet sind.While the construction of the machine 1, as previously described, is maintained, it should be provided for the printing device according to FIGS. 3 and 4 that the printing cylinders 16s and 16d are designed as gravure cylinders.

Den Tiefdruckzylindern 16s und 16d ist eine bekannte Rakelvorrichtung 100 und 101 zuzuordnen, in vorteilhafter Weise kommt bei der in Fig. 3 dargestellten Ausfuehrungsform die Rakelklinge 102 und 103 in einem oberen Umfangsbereich der Zylinder 16s und 16d zum Ansatz. Die Rakelvorrichtungen 100 und 101 sind bekannte Vorrichtungen, die allgemein in der Tiefdrucktechnik ueblich sind und beduerfen daher keiner weiteren Beschreibung.A known squeegee device 100 and 101 can be assigned to the gravure cylinders 16s and 16d. In the embodiment shown in FIG. 3, the squeegee blade 102 and 103 is advantageously used in an upper circumferential region of the cylinders 16s and 16d. Squeegee devices 100 and 101 are known devices which are common in gravure printing technology and therefore do not require any further description.

Unter den Tiefdruckzylindern 16s und 16d ist eine Farbwanne 104 und 105 vorgesehen, in der eine Farbauftragsrolle 106 und 107 drehbar gelagert ist.An ink tray 104 and 105 is provided under the gravure cylinders 16s and 16d, in which an ink application roller 106 and 107 is rotatably mounted.

Die abgerakelte Farbmenge wird ueber ein Leitblech 108 und 109 in eine uebliche Auffangwanne 110 und 111 zurueckgefoerdert. In vorteilhafter Weise sind die Rakelvorrichtungen 100 und 101 verschwenkbar ausgebildet, um ein Einstellen des Rakeldruckes, sowie ein leichtes Einfahren der Tiefdruckzylinder 16s und 16d zu ermoeglichen. In der in Fig. 3 dargestellten Ausfuehrungsform wird der Zylinder 16s fuer den Druckvorgang verwendet, wogegen der rechte Zylinder 16d gereinigt oder ausgetauscht werden kann.The scraped-off amount of ink is fed back via a baffle 108 and 109 into a common collecting tray 110 and 111. The doctor devices 100 and 101 designed to be pivotable in order to enable setting of the doctor blade pressure and easy retraction of the gravure cylinders 16s and 16d. In the embodiment shown in FIG. 3, the cylinder 16s is used for the printing process, whereas the right cylinder 16d can be cleaned or exchanged.

Die in Fig. 4 dargestellte Ausfuehrungsform entspricht im wesentlichen der in Fig. 3 dargestellten Ausfuehrungsform mit dem Unterschied, dass die Rakelvorrichtung 100 bzw. 101 in ausgesprochen kompakter Form ausgefuehrt ist und die Rakelklinge 102 bzw. 103 am unteren Umfang der Tiefdruckzylinder 16s und 16d zum Einsatz gelangt. Um zu vermeiden, dass vom Angriffspunkt der Rakelschneiden 102, 103 bis zum Beruehrungspunkt zwischen den Zylindern 16s und 16d und dem Gegendruckzylinder eine zu starke Verfluechtigung des Loesungsmittels der in den Farbnaepfchen abgelagerten Druckfarbe eintritt und somit ein Austrocknen der Druckfarbe erfolgt, was zu einer minderen Druckqualitaet fuehren wuerde, ist es nach Fig. 4 vorgesehen, die Farbauftragsvorrichtung, sowie die Rakelvorrichtung und den entsprechenden Tiefdruckzylinder vollkommen durch einen Blechmantel abzukapseln, um somit ein Entweichen des Loesungsmittels zu verhindern.The embodiment shown in FIG. 4 essentially corresponds to the embodiment shown in FIG. 3 with the difference that the doctor device 100 and 101 is designed in a particularly compact form and the doctor blade 102 and 103 on the lower circumference of the gravure cylinders 16s and 16d for Use. In order to avoid that from the point of application of the doctor blades 102, 103 to the point of contact between the cylinders 16s and 16d and the impression cylinder, the solvent of the printing ink deposited in the ink cups becomes too volatile and the printing ink dries out, resulting in a lower printing quality 4, it is provided according to FIG. 4 to completely encapsulate the ink application device, as well as the doctor device and the corresponding gravure cylinder, by means of a sheet metal jacket, in order to prevent the solvent from escaping.

In vorteilhafter Weise besteht die Abkapselung aus einer Grundwanne 112, 113, die z.B. fest am Maschinengestell angeordnet ist und die Farbauftragsvorrichtung, sowie die entsprechende Rakelvorrichtung umhuellt. Mit den oberen Ende der Grundwanne 112, bzw. 113 koennen ueber Steckverbindungen (120, 121, 122) Ummantelungsbleche 114, 115 und 116 in einfacher Weise angebracht werden oder abmontiert werden. Diese Ummantelungsbleche 114, 115 und 116 umhuellen den Tiefdruckzylinder 16s bzw. 16d fast vollstaendig und bilden somit eine wirkungsvolle Abkapselung, die ein unerwuenschtes Entweichen des Loesungsmittels aus der Druckfarbe verhindert.The encapsulation advantageously consists of a base pan 112, 113, which e.g. is firmly arranged on the machine frame and envelops the ink application device and the corresponding doctor device. With the upper end of the base trough 112 or 113, sheathing plates 114, 115 and 116 can be attached or detached in a simple manner via plug connections (120, 121, 122). These sheathing plates 114, 115 and 116 envelop the gravure cylinder 16s and 16d almost completely and thus form an effective encapsulation which prevents the solvent from escaping from the printing ink in an undesired manner.

Claims (15)

1. Supplementary printing unit, having a back pressure cylinder which is partially wrapped by a web of material to be printed, is mounted swivellably and can selectively be brought into operative connection with one of two assigned impression cylinders, characterised in that the ends (6a) of the back pressure cylinder (6) are mounted in the lower end of swivel arms (7), whose upper ends are connected to a horizontally arranged swivel axle (8), and the swivel axle (8) of each swivel arm (7) is connected to a carriage-type device (10), and each carriage-type device (10) is mounted so as to be displaceable up and down relative to the side parts (11) of the machine frame (1), and the back pressure cylinder (6) is arranged between two exchangeable impression cylinders (16s, 16d) which are located below said back pressure cylinder, are arranged horizontally and receive the printing plates.
2. Printing device according to Patent Claim 1, characterised in that the cheeks of the machine (1) have lateral openings (14) which are accessible from the outside and form bearing seats which receive the end journals (15) and the bearings of the impression cylinders (16s, 16d), and in that a tensioning device (17) is assigned to each bearing seat (14) for fixing the journal (15).
3. Printing device according to Patent Claim 1, characterised in that a carriage (20, 21) is arranged below each impression cylinder (16s, 16d), which carriage can be moved up and down, and each carriage (20, 21) receives a support (25, 26) which is swivellable about a horizontally arranged axle (23, 24) and bears forme inking cylinders (27, 29; 28, 30).
4. Printing device according to Patent Claim 1, characterised in that each carriage (20, 21) which receives the forme inking cylinders (27, 29; 28, 30) is operatively connected to a drive spindle (22) which is motor-driven.
5. Printing device according to Patent Claim 1, characterised in that a hydraulic clamping device (12) is assigned to the guides (11) of the carriage-type device (10).
6. Printing device according to Patent Claim 1, characterised in that the cylinders (16s, 16d) for receiving the printing plates are operatively connected to controllable drive motors (85) which can be uncoupled from the corresponding drive motor (86) via a controllable, interposed coupling (83, 84), and in that the impression cylinders (16d, 16s) can be connected to the main drive device (82) of the rotary printing machine by actuating a coupling (79, 80).
7. Printing device according to Patent Claims 1 and 3, characterised in that hydraulic cylinders (51, 52, 64, 65) are assigned to the swivel arms (7) and supports (25, 26) for carrying out the swivel movements of the cylinders (6, 29, 27, 30, 28), said hydraulic cylinders interacting with adjusting screws (53, 54, 66a, 66b) which serve as stop means.
8. Device according to Patent Claim 1, characterised in that the carriages (10) for receiving swivellable arms (7) and bearing the back pressure cylinder (6) are displaceable to a slight extent by means of a cylinder (P), and the carriages (10) have on their underside a pin (67) which is in operative connection with a window-type opening (55) which is machined into a threaded spindle (56), and the threaded spindle (56) is operatively connected to a drive device, consisting of a toothed ring (59) and threaded worm (60), and the drive device can be actuated via a controllable motor.
9. Printing device according to Patent Claim 1, characterised in that the back pressure cylinder (6) is driven via an independent motor (74), advantageously via a controllable motor.
10. Printing device according to Patent Claim 1, characterised in that an independent, controllable motor (93 or 96) is assigned to each forme inking cylinder (29, 27, 30, 28).
11. Printing device according to Patent Claim 1, characterised in that the impression cylinders (16s, 16d) are constructed as gravure cylinders to which a forme inking device (104, 106, 105, 107) and a doctor blade device (100, 101) are assigned.
12. Printing device according to Patent Claim 11, characterised in that the doctor blade (102, 103) comes to rest in the upper circumferential region of the impression cylinders (16s, 16d), and the scraped-off printing ink is conveyed back into an ink collecting trough (110, 111) via a guide plate (108, 109).
13. Printing device according to Patent Claim 11, characterised in that the doctor blade device (100, 102, 101, 103) comes to rest in the lower circumferential region of the impression cylinders (16s, 16d) and, together with the forme inking device (106, 107), forms a compact constructional unit.
14. Printing device according to Patent Claim 11, characterised in that each impression cylinder (16s, 16d) and the forme inking device (106, 107) and the doctor blade device (100, 101) are largely encapsulated by a sheet metal housing (114, 115, 116).
15. Printing device according to Patent Claim 14, characterised in that the doctor blade device (100, 101) and the forme inking device (106, 107) are received by a fixedly arranged trough (112, 113), and that covering plates (114, 115, 116) are connected to the upper ends of the trough (112, 113) via plug connections (120, 121, 122).
EP87102092A 1986-02-17 1987-02-13 Supplementary printing unit Expired - Lifetime EP0234456B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102092T ATE80833T1 (en) 1986-02-17 1987-02-13 ADDITIONAL PRINT UNIT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1943286 1986-02-17
IT19432/86A IT1204804B (en) 1986-02-17 1986-02-17 ADDITIONAL PRINTING UNIT OF THE FLEXOGRAPHIC TYPE

Publications (4)

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EP0234456A2 EP0234456A2 (en) 1987-09-02
EP0234456A3 EP0234456A3 (en) 1989-08-23
EP0234456B1 true EP0234456B1 (en) 1992-09-23
EP0234456B2 EP0234456B2 (en) 1995-02-15

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EP87102092A Expired - Lifetime EP0234456B2 (en) 1986-02-17 1987-02-13 Supplementary printing unit

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US (1) US4729309A (en)
EP (1) EP0234456B2 (en)
JP (1) JP2550047B2 (en)
AT (1) ATE80833T1 (en)
DE (1) DE3781812D1 (en)
IT (1) IT1204804B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109263244A (en) * 2017-07-17 2019-01-25 海德堡印刷机械股份公司 Printing machine with Luan Shi printing mechanism and the method for running this printing machine

Also Published As

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JPS62253450A (en) 1987-11-05
JP2550047B2 (en) 1996-10-30
IT8619432A0 (en) 1986-02-17
EP0234456A2 (en) 1987-09-02
EP0234456A3 (en) 1989-08-23
US4729309A (en) 1988-03-08
DE3781812D1 (en) 1992-10-29
IT1204804B (en) 1989-03-10
ATE80833T1 (en) 1992-10-15
EP0234456B2 (en) 1995-02-15

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