EP3653383B1 - Mécanisme d'encrage d'une machine d'impression ainsi que procédé de fixation d'au moins un cylindre d'encrage à un chariot déplaçable du mécanisme d'encrage - Google Patents

Mécanisme d'encrage d'une machine d'impression ainsi que procédé de fixation d'au moins un cylindre d'encrage à un chariot déplaçable du mécanisme d'encrage Download PDF

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Publication number
EP3653383B1
EP3653383B1 EP19210034.5A EP19210034A EP3653383B1 EP 3653383 B1 EP3653383 B1 EP 3653383B1 EP 19210034 A EP19210034 A EP 19210034A EP 3653383 B1 EP3653383 B1 EP 3653383B1
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EP
European Patent Office
Prior art keywords
inking unit
bearing housing
lever
lever element
support element
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.)
Active
Application number
EP19210034.5A
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German (de)
English (en)
Other versions
EP3653383A1 (fr
Inventor
Dietmar Koopmann
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.)
Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Publication of EP3653383A1 publication Critical patent/EP3653383A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/304—Arrangements for inking roller bearings, forks or supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/32—Lifting or adjusting devices

Definitions

  • the invention relates to an inking unit of a printing press according to all the features of claim 1 and a method for fastening at least one inking unit cylinder to a carriage of an inking unit according to all the features of claim 6.
  • inking unit cylinders in particular their functional element, usually an outer sleeve. It is therefore known to rotatably mount an inking unit cylinder at both ends in a support element during printing, but to change the functional element on one side to provide a bearing housing, to which a bearing is assigned, in which a journal of the inking unit cylinder is rotatably mounted, the bearing housing relative to the support element is pivotable about at least one pivot axis in order to expose or store the journal of the inking unit cylinder.
  • a locking device is provided, with which the bearing housing is connected to the support element.
  • the registration EP 2 079 588 A1 shows such a color work.
  • the disadvantage of such an inking unit is that the locking is done manually, so that the mechanical stability depends on the machine operator. This can result in poor-quality prints.
  • the DE 1 240 530 B shows an inking unit in which a quick shutdown of a roller is made possible by a pivoting movement of a toggle lever. This arrangement does not allow the pin of the inking unit cylinder to be exposed.
  • WO2008043747 and DE1240530 disclose printing units (inking units) with rotatable impression cylinders and their attachment in printing presses.
  • the object of the present invention is therefore to propose an inking unit and a method with which reproducible qualitatively better prints than in the prior art are possible.
  • the locking device comprises at least two lever elements which are articulated to one another, a first lever element being mounted in the support element and being movable relative to it, in particular being linearly movable, and a second lever element being pivotably mounted on the bearing housing, wherein the locking device comprises a stop for the bearing housing and/or the second lever element, the lever elements being movable and connected to one another in such a way that the bearing housing and/or the second lever arm can be pressed against the stop with a pressing force.
  • a second lever element can thus be moved by a first lever element, with the second lever element being arranged pivotably on the bearing housing.
  • the bearing housing is pivoted about a preferably vertically running pivot axis via the second lever element.
  • a stop which is assigned in particular to the support element, limits the movement of the bearing housing. The stop can act on the bearing housing and/or on the second lever element.
  • This also includes add-on parts which are connected to the bearing housing and/or to the second lever element. This can be, for example, an easily replaceable wear piece which can be attached to the bearing housing or the lever element.
  • a small movement of the first lever element can be translated into a pressing force by a suitably selected translation, with which the bearing housing or the second lever element can be pressed against the stop. It is particularly advantageous that the pressing force can be comparatively large, which leads to increased stability of the entire inking unit. As a result, vibrations of the inking unit cylinder can be avoided, which in the prior art are responsible for vibration stripes in the print. Overall, the quality of the printed products can be increased by the invention.
  • the pivot axis is arranged in a plane which is perpendicular to the axis of rotation of the inking unit cylinder. A space-saving construction of the inking unit can thus be achieved.
  • the support element can be displaceable relative to a machine position, in particular on guides, in a displacement direction. In this case, it is advantageous if the pivot axis also runs perpendicular to this displacement direction.
  • the first lever element is mounted in the support element so that it can move linearly, it being possible to cause a pivoting movement of the bearing housing with the linear movement.
  • a linear movement is easily manageable.
  • a linear cylinder or a linear motor is provided for this purpose.
  • a linear cylinder can, for example, be a pneumatic cylinder, in particular a double-acting pneumatic cylinder.
  • the movement of the first lever element can be limited by at least one limiting device.
  • a limiting device can be another stop.
  • the limiting device can also be defined by the stroke of the pneumatic cylinder, ie by the end points of the piston that can be moved within the pneumatic cylinder. Limiting the movement prevents the pressing force from being excessively reduced again. Such a case is explained below with reference to the figures.
  • the first lever element when the bearing housing and/or the second lever element rests against the stop, the first lever element can be moved further, with the first lever arm reaching a position in which the first lever element and the second lever element are in are in balance with each other, can be crossed.
  • the first lever element and the second lever element assume an acute angle.
  • This equilibrium is usually an unstable equilibrium, which arises when, for example, the first lever element and the second lever element are exactly perpendicular to one another. In this case, the pressing force is maximum. This position is often referred to as the dead center.
  • the first lever element continues to press the second lever element and/or the bearing housing with the pressing force against the stop.
  • the opposing force to the pressing force now presses the first lever element against the limiting device, so that overall there is a very stable locking of the bearing housing on the support element. Vibrations of the inking unit cylinder are thus further reduced and the quality of the printed product is further improved.
  • the support element is designed as a carriage which can be displaced relative to an inking unit carrier.
  • the inking unit carrier can be part of a printing press frame or be attached to it.
  • This configuration makes it possible, for example, to use outer sleeves with very different diameters and then to position the inking unit cylinder depending on the diameter by shifting the carriage, for example relative to other printing unit cylinders.
  • the pivotability of the bearing housing means that the invention has the advantage, in contrast to many other solutions known from the prior art, that the support element does not have to be displaced in order to expose a journal of the inking unit cylinder.
  • an anilox roller which by a Doctor blade chamber is colored.
  • Such a doctor blade chamber is usually attached to the support elements which lie at the ends of the inking unit cylinder.
  • the above-mentioned object is also achieved by a method for fastening at least one inking unit cylinder to at least one support element of an inking unit, with a bearing housing to which at least one bearing rotatably supporting a journal of the inking unit cylinder is assigned, the bearing housing being pivoted about at least one pivot axis relative to the support element is used in order to expose or store the journal of the inking unit cylinder, with a locking device, with which the bearing housing is fixed to the support element, the method being characterized in that the locking device comprises at least two lever elements which are articulated to one another, a first lever element in the Supporting element is mounted and is moved relative to this and a second lever element is pivotally mounted on the bearing housing, wherein the locking device comprises a stop for the bearing housing and / or the second lever element, wherein the lever elements moves who and are connected to one another in that the bearing housing and/or the second lever arm are pressed against the stop with a pressing force, with the first lever element being mounted in the support element so that it can
  • the figure 1 shows a view of the inking unit 1 according to the invention with an inking unit cylinder 2 and a bearing housing 3, in which the pin 4 of the inking unit cylinder can be stored.
  • the bearing housing 3 has a bearing which is not visible in this figure and surrounds the pin 4 .
  • the inking unit can be operated in this state.
  • the bearing housing 3 can be pivoted about the axis of rotation 5 .
  • the axis of rotation 5, which can be embodied by a pivot bearing, is supported on a support element 6 and can be adjustable in its height position relative to the support element, for example by a height adjustment device. This makes it possible to align the inking unit cylinder.
  • the support element is supported on components of a machine frame (not shown) and is generally held immovable relative to this during printing operation.
  • the support element 6 carries an attachment 7, which can also be designed in one piece with the support element 6.
  • a first lever element 8 can be displaced linearly in or on the endpiece in the direction of the double arrow 9 by means of a displacement drive (not shown), the first lever element 8 being articulated to a second lever element 10 .
  • a first joint 11 serves for this purpose. With a second joint 12, the second lever element 10 is connected in an articulated manner to the bearing housing. In the in the 1 The position shown is the lever element 10 near the joint 12 on a stop edge 13 of the extension piece 7.
  • first lever element 8 and the second Lever element 10 an acute angle ⁇ , ie an angle of less than 90, preferably between 80 and 89 degrees, in particular between 85 and 89 degrees. Since the movement of the first lever element 11 is limited by a limiting device (not shown), a force that is transmitted, for example, from the inking unit cylinder 2 to the bearing housing 3 can be transmitted to the first lever element 8, but does not lead to any movement of the bearing housing 3 relative to the support element 6. A high print quality can thus be achieved.
  • the figure 3 shows a further exemplary embodiment of an inking unit 1 according to the invention.
  • This figure also shows a section through part of the bearing housing 3, so that different functions within the inking unit 1 can be seen better.
  • At least one bearing 14 is configured as a roller bearing, for example, and is fastened in or on a bearing holder 15 .
  • This bearing holder 15 can be displaced, for example, along sliding surfaces relative to the bearing housing 3, with the bearing holder 15 and thus the at least one bearing 14 being able to be pushed onto the journal 4, so that this and with it the inking unit cylinder 2 no longer move in the radial direction relative to the bearing housing 3 can move.
  • a drive 16 is provided, which is in particular encompassed by the bearing housing 3.
  • the drive 16 can be designed as a piston-cylinder unit and can move the bearing holder 15 by means of a push/pull rod 18 attached to the piston 17 .
  • the figure 4 shows the embodiment of figure 3 , but the bearing holder 15 is withdrawn from the pin 4.
  • the bearing housing can now be pivoted, as already in connection with the Figures 1 and 2 was described.
  • the figure 5 shows a development of an inking unit 1 according to the invention, in particular one after Figures 3 and 4 .
  • This advantageous development in turn comprises a drive 16 arranged on the bearing housing, with which in particular a bearing 14 can be pushed onto the pin 4 and pulled off the pin 4 again.
  • a protective element 20 can be displaceable by means of the drive 16 via any type of connection, in particular a mechanical connection.
  • the bearing 14 can be arranged in a bearing holder 15 and the bearing holder 15 can include a pin 21 which projects out of the bearing housing 3 through a slot 22, for example. This pin 21 can be displaced with the bearing holder 15 accordingly.
  • the pin 21 can also be arranged directly on a push/pull rod 18 of a drive 16 configured as a piston-cylinder unit.
  • the protective element 20 includes in particular a holder 23 and the actual protection 24 which is held by the holder 23 .
  • a guard 24 can cover parts of the end face and/or parts of the peripheral surface in the vicinity of the end face of the inking unit cylinder 2, so that, for example, an operator is prevented from touching the inking unit cylinder 2.
  • Such a protection can also be a splash guard, in which case it is avoided in particular that paint from the inking unit cylinder gets into the environment. This is particularly advantageous when the inking unit cylinder is designed as an anilox roller.
  • the holder 23 is operatively connected to the pin, ie when the pin moves, the holder and with it the guard are also moved.
  • the holder can slide on a sliding surface which is located, for example, on an outer surface of the bearing housing 3 .
  • the protective element can be automatically removed from the inking unit cylinder together with the movement of the drive and in particular together with the bearing 14 .
  • One separate or even manual removal of the protective element is no longer necessary.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Ink Jet (AREA)
  • Rotary Presses (AREA)

Claims (6)

  1. Dispositif d'encrage (1) d'une machine d'impression avec au moins un cylindre de dispositif d'encrage (2) et avec au moins un élément porteur (6),
    avec un boîtier de palier (3), auquel correspond au moins un palier (14) logeant de manière rotative au moins un axe (4) du cylindre de dispositif d'encrage (2), dans lequel le boîtier de palier (3) peut pivoter par rapport à l'élément porteur (6) autour d'au moins un axe de pivotement (5), afin de libérer ou de loger l'axe (4) du cylindre du dispositif d'encrage (2),
    avec un dispositif d'arrêt avec lequel le boîtier de palier (3) peut être fixé à l'élément porteur (6),
    caractérisé en ce que
    le dispositif d'arrêt comprend au moins deux éléments de levier (8, 10) reliés entre eux de manière articulée, dans lequel un premier élément de levier (8) est logé dans l'élément porteur et est mobile par rapport à celui-ci et un deuxième élément de levier (10) est logé de manière pivotante au niveau du boîtier de palier (3),
    dans lequel le dispositif d'arrêt comprend une butée (13) pour le boîtier de palier (3) et/ou le deuxième élément de levier (10), dans lequel les éléments de levier (8, 10) sont mobiles et reliés entre eux de façon à ce que le boîtier de palier (3) et/ou le deuxième élément de levier (10) puissent être comprimés avec une force de compression contre la butée (13),
    dans lequel le premier élément de levier (8) est logé de manière mobile linéairement dans l'élément porteur (6) au moyen d'un cylindre linéaire ou d'un moteur linéaire, dans lequel le mouvement linéaire provoque un mouvement de pivotement du boîtier de palier (3).
  2. Dispositif d'encrage (1) selon la revendication 1,
    caractérisé en ce que
    l'axe de pivotement (5) est disposé dans un plan qui est perpendiculaire à l'axe de rotation du cylindre du dispositif d'encrage (2).
  3. Dispositif d'encrage (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    lorsque le boîtier de palier (3) et/ou le deuxième élément de levier (10) s'appuie contre la butée (13), le premier élément de levier (8) peut être déplacé plus loin, dans lequel le premier élément de levier (8) permet de dépasser une position dans laquelle le premier élément de levier (8) et le deuxième élément de levier (10) sont en équilibre entre eux.
  4. Dispositif d'encrage (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    le déplacement du premier élément de levier (8) peut être limité par au moins un dispositif de limitation.
  5. Dispositif d'encrage (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément porteur (6) est conçu comme un chariot qui peut coulisser par rapport à un support de dispositif d'encrage.
  6. Procédé de fixation d'au moins un cylindre de dispositif d'encrage (2) à au moins un élément porteur (6) d'un dispositif d'encrage (1),
    avec un boîtier de palier (3), auquel correspond au moins un palier (14) logeant de manière rotative au moins un axe (4) du cylindre de dispositif d'encrage (2), dans lequel le boîtier de palier (3) peut pivoter par rapport à l'élément porteur (6) autour d'au moins un axe de pivotement (5), afin de libérer ou de loger l'axe (4) du cylindre du dispositif d'encrage (2),
    avec un dispositif d'arrêt avec lequel le boîtier de palier (3) peut être fixé à l'élément porteur (6),
    caractérisé en ce que
    le dispositif d'arrêt comprend au moins deux éléments de levier (8, 10) reliés entre eux de manière articulée, dans lequel un premier élément de levier (8) est logé dans l'élément porteur (6) et est déplacé par rapport à celui-ci et un deuxième élément de levier (10) est logé de manière pivotante au niveau du boîtier de palier (3),
    dans lequel le dispositif d'arrêt comprend une butée (13) pour le boîtier de palier (3) et/ou le deuxième élément de levier (10), dans lequel les éléments de levier (8, 10) sont déplacés et reliés entre eux de façon à ce que le boîtier de palier (3) et/ou le deuxième élément de levier (10) puissent être comprimés avec une force de compression contre la butée (13), dans lequel le premier élément de levier (8) est logé de manière mobile linéairement dans l'élément porteur (6) et est déplacé linéairement au moyen d'un cylindre linéaire ou d'un moteur linéaire, dans lequel le mouvement linéaire provoque un mouvement de pivotement du boîtier de palier (3).
EP19210034.5A 2018-11-19 2019-11-19 Mécanisme d'encrage d'une machine d'impression ainsi que procédé de fixation d'au moins un cylindre d'encrage à un chariot déplaçable du mécanisme d'encrage Active EP3653383B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018219813 2018-11-19

Publications (2)

Publication Number Publication Date
EP3653383A1 EP3653383A1 (fr) 2020-05-20
EP3653383B1 true EP3653383B1 (fr) 2022-06-15

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ID=68618036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19210034.5A Active EP3653383B1 (fr) 2018-11-19 2019-11-19 Mécanisme d'encrage d'une machine d'impression ainsi que procédé de fixation d'au moins un cylindre d'encrage à un chariot déplaçable du mécanisme d'encrage

Country Status (2)

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EP (1) EP3653383B1 (fr)
ES (1) ES2922160T3 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1240530B (de) * 1963-07-19 1967-05-18 Maschf Augsburg Nuernberg Ag Lagerung fuer Auftrag- und Reibwalzen in Farbwerken fuer Rotationsdruckmaschinen
DE4041497A1 (de) * 1990-12-22 1992-06-25 Roland Man Druckmasch Lagerung fuer einen druckwerkzylinder
US5241905A (en) * 1992-10-27 1993-09-07 Heidelberg Harris Inc. Printing unit with releasable bearing clamp
WO2008043747A1 (fr) * 2006-10-10 2008-04-17 Windmöller & Hölscher Kg Ensemble de palier de support pour un rouleau encreur ou de contre-pression

Also Published As

Publication number Publication date
EP3653383A1 (fr) 2020-05-20
ES2922160T3 (es) 2022-09-09

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