EP1663651A1 - Dispositif et procede pour rapprocher et eloigner un cylindre d'une machine a imprimer - Google Patents

Dispositif et procede pour rapprocher et eloigner un cylindre d'une machine a imprimer

Info

Publication number
EP1663651A1
EP1663651A1 EP04761880A EP04761880A EP1663651A1 EP 1663651 A1 EP1663651 A1 EP 1663651A1 EP 04761880 A EP04761880 A EP 04761880A EP 04761880 A EP04761880 A EP 04761880A EP 1663651 A1 EP1663651 A1 EP 1663651A1
Authority
EP
European Patent Office
Prior art keywords
roller
counter
unit
roll
rollers
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.)
Withdrawn
Application number
EP04761880A
Other languages
German (de)
English (en)
Inventor
Andres Miescher
Andreas Zahnd
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP1663651A1 publication Critical patent/EP1663651A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B41F31/307—Sliding bearings
    • 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
    • B41F31/301—Devices for tripping and adjusting form rollers

Definitions

  • the invention relates to a device and a method for setting and stopping a roller of a printing press against a counter roller.
  • rollers During printing, it is often necessary to turn individual rollers on and off on other rollers.
  • Individual rollers e.g. an application roller, at the same time both on a plate cylinder and on a friction roller, whereby in the area of contact of two adjacent rollers, a so-called "nip", i.e. forms a contact surface on which the surfaces of the adjacent rollers touch.
  • a roller with a pressure that is as constant as possible rests on a counter roller.
  • Figure 3 shows a so-called intermediate roller 1, which is set against two fixed counter-rollers 3 and 4.
  • the intermediate roller 1 is usually in the adjustment direction A along the bisector of the triangle formed by the axes of rotation of the rollers 1, 3 and 4, starting from the axis of rotation of the roller 1, between the both axes of rotation of the rollers 3 and 4 through against the counter-rollers 3 and 4 and comes into contact with the counter-rollers 3 and 4 at the same time.
  • a roller should be set up in such a way that it rests on at least two rolls in the set state. This is e.g. in the case of an application roller, which should be in contact with a friction roller and a plate cylinder.
  • the device according to the invention for setting up and / or setting down a roller of a printing press on or from a first counter roller so that when the roller is in contact with the first and a second counter roller, has a basic unit with which the roller is circumferential or can be guided or moved in the tangential direction of the second counter-roller in such a way that the roller is preferably in constant contact with the second counter-roller and can thus be moved, for example, along a circular path in the direction of the first counter-roller until the roller abuts the first counter-roller , Likewise, the roller with the base unit can also be moved away from the first counter roller.
  • the basic unit provided according to the invention is therefore designed such that the roller can be mounted or guided in such a way that the roller can be guided or moved along the second counter-roller such that at least a portion of the surface of the roller and the second counter-roller are preferably in continuous contact, that is, the roller is preferably constantly engaged on the second counter roller.
  • the roller can already run in contact with the second counter-roller and if, for example, an application roller is in contact with a grater and along the surface of the grater for engagement with one Plate cylinder is guided, the application roller can be prevented from running dry.
  • the roller therefore only has to be placed against a single counter roller, since it is preferably already in constant contact with the second counter roller.
  • the nip can already be set and only a single adjustment process to a further counter roller is required in order to bring the roller into contact with two counter rollers.
  • the device according to the invention for starting and / or parking a roller on or from a counter roller can in principle be provided for each individual roller of a printing press.
  • the invention is preferably used for at least one, several or each rubber roller, for example in the inking unit and / or in the dampening unit.
  • rider rolls, friction rolls, inking rolls and / or other rolls directly or indirectly adjacent to the rolls mentioned can be switched on or off.
  • the base unit advantageously has a pneumatic element for adjusting the base unit, as a result of which very rapid adjustment and / or shutdown movements are carried out. can be carried out and thus, for example, peaked run-up sequences with minimal waste or quick shutdowns, for example in the event of an emergency stop, while avoiding inking unit winders, can be realized.
  • the base unit for moving the roller in the circumferential direction of the second counter-roller can preferably be transversely adjusted, i.e. perpendicular to a radial direction or parallel to a tangential direction of the second counter roll. This makes it possible to set a desired nip ratio between the roller and the first and second counter cylinders. If, for example, the basic unit is moved in a straight line continuation of a tangential direction to a counter-roller, the pressure distribution in the contact surfaces of the roller on the first and second counter-cylinders can be adjusted and thus, for example, it can be ensured that the same nip at the contact points on the first and second counter rolls. For example, in one embodiment, the nip ratio between an application roller and a plate cylinder or the grater can be adjusted or adjusted by a corresponding transverse adjustment of the base unit relative to the grater and / or the plate cylinder.
  • a feed unit is advantageously provided which communicates with the roll in conjunction or in which the roller is mounted 'and with which for example a positioning pressure of the roller can be set at one or two counter-rollers or generated.
  • the delivery unit can, for example, be rotatably or permanently connected to the base unit.
  • the delivery unit preferably has a carriage, which e.g. is pressurized by a spring or other suitable element and the roller, e.g. an application roller, can be stored in two half-shells in a known manner.
  • An adjustment member such as is advantageous for an adjusting spindle, is provided, with which a pressure, for example of the spring pressure on the slide can be changed, to the positioning pressure of the stored in the carriage roll "on the cylinders or the equivalent to adjust and thus, for example, to be able to realize desired nip widths for the counter cylinders, for example for the plate cylinder and the grater.
  • the delivery unit is preferably e.g. in the engaged state in the axis of the bisector between the first and second counter-cylinders, for example between the plate cylinder and the grater, as a result of which the contact pressure generated by the delivery unit acting on the roller acts approximately uniformly on the two counter-cylinders, so that the nipple Ratio between the counter cylinders is approximately the same.
  • the nip ratio can be changed from the angle bisector mentioned in order, for example, to produce a larger Npp width with a counter cylinder than with another counter cylinder ,
  • the base unit and the infeed unit are preferably coupled to one another and advantageously rotatably mounted relative to one another, so that, for example, the roller is connected to the base unit via the infeed unit and the base unit can guide the roller together with the infeed unit in the circumferential direction of the second counter-roller such that the roller hired to the first counter roll or is parked by this.
  • the feed unit can be rotated into such a position that a spring element present in the feed unit presses on a slide carrying the roller in such a way that a desired nip ratio can be achieved.
  • rollers can be switched on and off very quickly by the device according to the invention, it being possible to set a nip or a nip ratio, which are retained regardless of the speed, heating of the rollers or eventual swelling or shrinking, or automatically can be regulated.
  • an automatically nip-compensating applicator roller bearing can be realized, whereby the nipple can also adapt to changes within certain limits.
  • Printing units with plate cylinders with very small channel widths, for example with a mimgap slot splitting, or channelless plate cylinders, for example in a sleeve design, are advantageously used. This can ensure that there are practically no channel strikes on the spring-loaded roller, such as the applicator roller, which could lead to vibrations.
  • the invention further relates to a method for turning on and / or turning off a roller of a printing press on or from a first counter roller, the roller being positioned on a second counter roller and the roller being guided in the tangential or circumferential direction of the second counter roller in the engaged state until the roller is or is in contact with the first counter-roller or has been removed from it.
  • the roller advantageously remains in constant contact with the second counter-roller, i.e. a partial area of the roller lies against a partial area of the second counter roller.
  • the nip, a nip ratio or the contact pressure or contact pressure of the roll on one or two counter rolls can be set particularly preferably, for example by a force acting on the roller is suitably set or changed.
  • Figure 1 is a schematic diagram of a pneumatic NC applicator roller bearing
  • Figure 2 is a schematic representation of an NC delivery unit
  • FIG. 3 shows an intermediate roller set on two fixed counter-rollers
  • FIG. 1 shows an embodiment of a device according to the invention with an application roller 1 that can be adjusted by a base unit 2 along the surface of the friction device 4 serving as a second counter cylinder.
  • the base unit 2 can be moved according to the invention, preferably pneumatically, in such a way that the feed unit 5, in which the Application roller 1 is mounted, is moved so that the application roller 1 is guided along the circumference of the grater 4 until the application roller 1 is placed against the plate cylinder 3 provided as the first counter cylinder.
  • the application roller thus remains in constant contact with the grater 4, thereby preventing the application roller 1 from running dry.
  • the basic unit 2 can be adjusted transversely in the direction shown by the arrows A in order to set a desired nip ratio between the application roller 1 and the plate cylinder 3 or the grater 4 by such a transverse adjustment.
  • the feed unit 5, which is rotatably mounted in the base unit 2, has a spring element 6 which generates a spring pressure on a slide 8, the strength of the spring pressure generated by the spring 6 being able to be set by the adjusting spindle 7.
  • the application roller 1 is supported in a known manner in two half-shells by the carriage 8. Is the delivery unit 5, as shown in Figure 1, on the axis of the bisector, which bisects the angle 2 ⁇ , which is formed by the centers of the plate cylinder 3, the application roller 1 and the grater 4, i.e.
  • a nip ratio of approximately 1: 1 can be achieved.
  • a different nip ratio can be set by deflecting the infeed unit 5 or the spring element 6 pressing on the slide 8 from the bisector.
  • FIG. 2 shows the delivery unit 5, which is connected to the base unit 2 by a joint 9 and is rotatably mounted on the latter.
  • An adjustment spindle 7 is provided on the delivery unit 5, with which the pressure acting on the spring 6 can be adjusted.
  • the spring 6 presses on the carriage 8, a counter spring 6a optionally being provided, which likewise presses on the carriage 8, for example to compensate for the weight of the application roller 1.
  • the application roller 1 is rotatably mounted in the carriage 8 and can thus be switched on or off by the base unit 2, for example pneumatically in an approximately tangential direction to the grater 4, with the prestressing of the spring 6, which is advantageously approximately along the bisector between the plate cylinders described above 3 and grater 4 is arranged, the nip on the plate cylinder 3 and / or on the grater 4 and, with suitable positioning of the spring 6 or the delivery unit 5, the nip ratio can also be set.
  • the application roller 1 and the grater 4 are in operative connection and there is no operative connection between the application roller 1 and the plate cylinder 3.
  • the application roller 1 is placed on the plate cylinder 3 while maintaining the operative connection to the grater 4 and e.g. turned off from the plate cylinder 3 to carry out a washing process, in order then only to be in operative connection with the grater 4.
  • FIG. 4 shows a schematic of a dyeing and dampening unit of an offset printing machine and shows, by way of example, rollers which are switched on and / or off with the device or the method according to the invention.
  • the named rolls and / or rolls directly or indirectly adjacent to them can be switched on or off with the device according to the invention in the counter cylinders shown.

Landscapes

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

Abstract

L'invention concerne un dispositif pour rapprocher et/ou éloigner un cylindre (1) d'un premier contre-cylindre (3). Ce dispositif présente un deuxième contre-cylindre (4), duquel est rapproché le cylindre (1), et une unité de base (2) permettant de déplacer le cylindre (1) dans le sens périphérique du deuxième contre-cylindre (4). L'invention concerne également un procédé pour rapprocher et/ou éloigner un cylindre (1), faisant partie d'une machine à imprimer, d'un premier contre-cylindre (3). Selon ce procédé, le cylindre (1) est rapproché d'un deuxième contre-cylindre (4) et, dans cet état, guidé dans le sens périphérique du deuxième contre-cylindre (4).
EP04761880A 2003-09-01 2004-08-27 Dispositif et procede pour rapprocher et eloigner un cylindre d'une machine a imprimer Withdrawn EP1663651A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10340183A DE10340183A1 (de) 2003-09-01 2003-09-01 Vorrichtung und Verfahren zum An- und Abstellen einer Walze einer Druckmaschine
PCT/CH2004/000540 WO2005021264A1 (fr) 2003-09-01 2004-08-27 Dispositif et procede pour rapprocher et eloigner un cylindre d'une machine a imprimer

Publications (1)

Publication Number Publication Date
EP1663651A1 true EP1663651A1 (fr) 2006-06-07

Family

ID=34223254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04761880A Withdrawn EP1663651A1 (fr) 2003-09-01 2004-08-27 Dispositif et procede pour rapprocher et eloigner un cylindre d'une machine a imprimer

Country Status (4)

Country Link
US (1) US7581493B2 (fr)
EP (1) EP1663651A1 (fr)
DE (1) DE10340183A1 (fr)
WO (1) WO2005021264A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004004665B4 (de) * 2004-01-30 2005-12-29 Koenig & Bauer Ag Vorrichtung zum Einstellen einer von einer Walze in einem Walzenstreifen auf einen benachbarten Rotationskörper ausgeübten Anpresskraft und zum Anstellen der Walze an den Rotationskörper oder zum Abstellen der Walze von dem Rotationskörper

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE362385B (fr) * 1973-02-14 1973-12-10 Wifag Maschf
DE3825517A1 (de) * 1988-07-27 1990-02-01 Wifag Maschf Vorrichtung zum an- und abstellen sowie einstellen von farbwerks- bzw. feuchtwerkswalzen einer druckmaschine
DE3926087C1 (fr) * 1989-08-07 1990-10-04 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE9110345U1 (de) * 1991-08-22 1991-10-10 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Feuchtwerk für Offsetdruckmaschinen
DE9316916U1 (de) * 1993-11-05 1994-01-27 Maschinenfabrik Goebel Gmbh, 64293 Darmstadt Kombiniertes Feucht-Farbwerk
DE4400563C2 (de) * 1994-01-11 2000-08-10 Roland Man Druckmasch Walze in einem Farbwerk oder Feuchtwerk einer Rotationsdruckmaschine
DE19603024B4 (de) * 1996-01-29 2006-03-30 Man Roland Druckmaschinen Ag Farbwerk
FR2755057B1 (fr) 1996-10-25 1999-01-15 Heidelberg Harris Sa Dispositif de mise en appui de rouleaux contre des surfaces rotatives
DE19811053C2 (de) 1998-03-13 2002-06-06 Wifag Maschf Vorrichtung zum Lagern und Positionieren einer Walze
DE10023605A1 (de) * 2000-05-15 2002-06-27 Roland Man Druckmasch Vorrichtung zum Einstellen einer Auftragwalze am Plattenzylinder einer Druckmaschine
DE10244044B4 (de) * 2001-12-06 2005-10-06 Koenig & Bauer Ag Verfahren zum Betrieb eines Farbwerkes oder Feuchtwerkes in einer Druckmaschine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2005021264A1 *

Also Published As

Publication number Publication date
WO2005021264A1 (fr) 2005-03-10
US20060124005A1 (en) 2006-06-15
US7581493B2 (en) 2009-09-01
DE10340183A1 (de) 2005-03-31

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