EP1029672B1 - Procédé et dispositif pour ajuster la force de pressage entre des rouleaux d'une machine à imprimer - Google Patents

Procédé et dispositif pour ajuster la force de pressage entre des rouleaux d'une machine à imprimer Download PDF

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Publication number
EP1029672B1
EP1029672B1 EP00100236A EP00100236A EP1029672B1 EP 1029672 B1 EP1029672 B1 EP 1029672B1 EP 00100236 A EP00100236 A EP 00100236A EP 00100236 A EP00100236 A EP 00100236A EP 1029672 B1 EP1029672 B1 EP 1029672B1
Authority
EP
European Patent Office
Prior art keywords
roller
pressure
pressure fluid
hydraulic actuator
rubber roller
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
EP00100236A
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German (de)
English (en)
Other versions
EP1029672A1 (fr
Inventor
Charles Henry Dufour
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1029672A1 publication Critical patent/EP1029672A1/fr
Application granted granted Critical
Publication of EP1029672B1 publication Critical patent/EP1029672B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices
    • B41F13/40—Cylinder lifting or adjusting devices fluid-pressure operated

Definitions

  • the invention relates to an apparatus and a method for adjusting the Contact pressure between rubber rollers and other rollers Press.
  • rubber rollers or blanket rollers are used to transfer ink inserted from the ink fountain roller onto the plate cylinder.
  • dampening systems by means of Rubber rollers transfer dampening solution from one cylinder to another.
  • the Rubber roller must be biased to do this. H. be employed on the other rollers.
  • H. be employed on the other rollers.
  • US 4,354,431 describes a device for preventing bending vibrations especially when the tension or rubber blanket channels of the cylinder Rotary press meet.
  • the device comprises two on both sides of the Cylinder bearing spaced brackets, which have a first and a second clamping rail are connected to each other.
  • the tensioning rails grip each of the with respect to the middle of the cylinder bearings offset end portions of the bracket.
  • the first tensioning rail comprises a tensioning joint which interrupts the Connection between the two brackets allows to reduce the contact pressure.
  • the second tensioning rail comprises a compression spring, which is controlled by a hydraulic or Pneumatic device can be replaced to the pressure exerted by the brackets to reduce.
  • a disadvantage of this device is that the between the The force acting on cylinders does not act directly on the center of the cylinder bearing, but on the end sections of the stirrups offset with respect to the center, which creates lateral forces arise, which affect the setting of the two cylinders.
  • WO-A 94/07695 describes a method and an apparatus for adjusting the Pressing on a roller provided with a plastic jacket Rotary presses. This is a between a forme cylinder and the Rubber covering of a roll of paint that is created, regardless of the Degree of heating of the rubber covering kept constant while the machine was running. It will be the Ink application roller by means of a frame-mounted, the ink application roller in Roller locks receiving lever placed on the forme cylinder, the lever are adjustable against fixed stops and between the levers and the stops elastic, thermal expansion sensitive elements are arranged.
  • From US 4,354,431 is a control system for setting the contact pressure of Printing cylinders known.
  • the bearings of two blanket cylinders are partially from each arm enclosed, these two arms by means of two tie rods are connected.
  • the tension rod has a hydraulic unit, by means of which the contact pressure between the two blanket cylinders by opening and Closing the hydraulic unit is adjustable.
  • the starting pressure can be in Dependence on the machine speed using a terminal and a Pressurized fluid source can be set.
  • EP 0 783 964 A1 describes a printing press which comprises means by means of the contact pressure between two cylinders is adjustable.
  • a cylinder is in an eccentric bearing, to which an arm is attached, which in turn is connected to a piston rod of a hydraulic cylinder.
  • a first chamber of the Hydraulic cylinder can with a pressure fluid, which is a fluid circuit of a Motor pump is supplied, acted upon and thereby a cylinder position be made.
  • the maximum permissible starting pressure is one Pressure limiter limited.
  • a four-way valve is actuated to shut off the cylinder so that the pressure fluid can escape from the first chamber of the hydraulic cylinder while the pressure fluid via a further pressure fluid circuit of a second chamber of the Hydraulic cylinder is supplied.
  • the pressure of the fluid in the first chamber of the Hydraulic cylinder is picked up by a pressure measuring device and to a Control device transmitted.
  • the control device can also be a safety valve actuate which the pressure fluid circuit of the first chamber with the Pressurized fluid circuit connects the second chamber of the hydraulic cylinder so that it too a pressure change in both chambers comes, causing the cylinder piston of the Hydraulic cylinder moves and the contact pressure is changed.
  • DE 39 04 298 A1 already describes a device for switching on and off Printing unit cylinders known.
  • the printing unit cylinders are in eccentric bushings stored by the purpose of starting and stopping the printing cylinder hydraulic working cylinders can be turned on both sides of the machine.
  • An inventive device for adjusting the contact pressure between Rubber rollers and other rollers of a printing press comprises a hydraulic actuator for positioning the rubber roller on the at least an adjacent roller, which with the rubber roller and the at least one adjacent roller is connected and is in communication with a source of pressurized fluid.
  • a hydraulic actuator for positioning the rubber roller on the at least an adjacent roller, which with the rubber roller and the at least one adjacent roller is connected and is in communication with a source of pressurized fluid.
  • the hydraulic control element it can be, for. B. a hydraulic Act double piston cylinder.
  • the activation valve is preferably an electronically controlled hydraulic four-way valve. Furthermore, the hydraulic valve via an electrical Signal line connected to a user interface, either as a separate User interface only for setting the contact pressure between the rubber rollers can be formed or integrated into the main user interface of the printing press can be. The control of the contact pressure can also be computer controlled.
  • the hydraulic actuator with the Pressure fluid source connects, a check valve integrated.
  • the pressurized fluid circuit which is the hydraulic Control element connects to the pressure fluid source, a pressure regulator integrated.
  • the rubber roller can be used as an ink transfer roller of an inking unit Printing machine be formed, and the at least one adjacent roller can, for. B. be designed as a friction roller.
  • the at least one roller adjacent to the rubber roller is preferably one Axle mounted in the frame of the machine rotatable while the rubber roller preferably by one with respect to the machine frame by means of a hydraulic Adjusting element movably arranged axis is rotatable.
  • the contact pressure is set in one employed position of the rubber roller.
  • the rubber roller is in one Formed so that they can be parked by the adjacent roller and when necessary can be spaced.
  • the drawing is a schematic top view of one adjacent two rollers employed rubber roller and a hydraulic pressure system according to the invention.
  • roller A In the accompanying drawing, one is attached to a roller A and a roller C.
  • Rubber roller B of a rotary printing machine shown.
  • On the cylinder body of the Rubber roller B is a rubber blanket or rubber coating 1 applied.
  • the roller C can e.g. B. be designed as a nylon coated ink roller. Rollers A, B and C rotate about mutually parallel axes.
  • the rollers can e.g. B. may be arranged in a web-fed rotary printing press. If it is in particular a double-width newspaper printing press, the rubber roller B is placed against roller A and / or C with a maximum contact pressure of 18 N / cm. With a 100 cm long rubber roller strip, a contact pressure of 1800 N would be necessary. According to the invention, this force is applied by hydraulic adjusting elements in the form of the hydraulic cylinders H A / B and H B / C , which according to the preferred embodiment of the invention, as shown in the single figure, are preferably designed as double-acting cylinders on their respective piston rods, or on the cylinder housing, the respective roller axes are attached.
  • the double-acting cylinders are each provided on both sides of the piston with supply lines for a pressure fluid, for example hydraulic fluid, via which the pressure fluid, as described in detail below, into the two working chambers arranged on either side of each of the pistons is fed.
  • a pressure fluid for example hydraulic fluid
  • the cylinders it is also possible to design the cylinders as double-piston cylinders with two pistons acted upon by the pressure fluid, which are separated by a partition, and the associated piston rods of which are each connected to the rubber roller B and the rollers A and C.
  • each hydraulic cylinder applies 900 N.
  • An advantageous operating contact pressure of the hydraulic cylinders, in which the piston friction can be neglected, is 700 N / cm 2 ( ⁇ 1000 psi).
  • a hydraulic cylinder with an inner diameter of 1.3 cm ( ⁇ 0.5 ") applies the necessary force of approx. 900 N with 700 N / cm 2 pressure (force is equal to pressure times the area).
  • Each of the hydraulic cylinders H A / B and H B / C is controlled by a four-way valve 3, 4.
  • the valves can be marked with “shutdown” and “adjustment” and can be actuated independently of one another, so that the rubber roller B can, for example, be adjusted against the inking roller C while it is shut off from the roller A. As a rule, however, the rubber roller B will be placed on both rollers A, C at the same time or will be turned off by both.
  • the valves 3 and 4 are actuated electrically via the electrical signal lines E.
  • the signal lines E can be connected to an auxiliary control surface 9 provided only for the roller adjustment or to the central control surface of the printing unit and / or the printing press.
  • the pressure acting via the valves 3, 4 is applied by a pressure fluid source P.
  • a pressure regulator 5, 6 is integrated into the hydraulic circuit of the hydraulic cylinders H A / B and H B / C , the pressure regulator 5 regulating the contact pressure between the rollers A and B and the pressure regulator 6 regulating the contact pressure between the rollers B and C, if the four-way valves 3, 4 are set accordingly.
  • a check valve 7, 8 is also integrated, through which the position of the rubber roller B and the adjacent rollers can be locked after setting the desired contact pressure via the pressure regulator 5, 6.
  • the check valves 7, 8 assigned to each of the hydraulic cylinders H A / B and H B / C are preferably arranged in one of the supply lines for the pressure fluid to the respective working chamber of the double-acting cylinder. The positional relationships are locked because the hydraulic fluid cannot be compressed.
  • the shut-off valve can be opened and closed again, preferably at regular intervals, for position adjustment and automatic pressure adjustment during the pressure operation, whereby the pressure fluid source P, with a corresponding position of the valves 3, 4, the hydraulic cylinders H A / B and H B / C via the pressure regulator 5, 6 pressurized with pressure fluid predetermined pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Ink Jet (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Fixing For Electrophotography (AREA)

Claims (8)

  1. Dispositif de réglage de la pression de pressage entre un cylindre caoutchouté ou porte-blanchet (B) et au moins un cylindre (A, C) limitrophe à celui-ci, dans une machine à imprimer, avec un élément de réglage (HA/B, HB/C) hydraulique, reliant le cylindre porto-blanchet (B) au cylindre (A, C), élément de réglage pouvant être alimenté en fluide sous pression par une source de fluide sous pression (P) et un régulateur de pression (5, 6), de manière que le cylindre porte-blanchet (B) puisse être plaqué sur le cylindre (A, C) avec une pression de pressage prédéterminée,
    caractérisé en ce que,
    dans le circuit de fluide sous pression reliant l'élément de réglage hydraulique (HA/B, HB/C) à la source de fluide sous pression (P), est de surcroít intégrée une soupape d'isolement (7, 8).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'élément de réglage hydraulique (HA/B, HB/C) est réalisé sous la forme de vérin à double action, pour lequel les chambres de travail disposées des deux côtés du piston peuvent être alimentées en fluide sous pression par des conduites séparées.
  3. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce qu'
    une soupape d'activation (3, 4) est disposée entre l'élément de réglage hydraulique (HA/B, HB/C) et la source de fluide sous pression (P).
  4. Dispositif selon la revendication 3,
    caractérisé en ce que
    la soupape d'activation (3, 4) est réalisée sous la forme de soupape à quatre voies.
  5. Dispositif selon la revendication 4,
    caractérisé en ce que
    la soupape d'activation (3, 4) est réalisée sous la forme de soupape pouvant être commandée de façon électrique, reliée à un écran opérateur (9) par une ligne de signalisation (E) électrique.
  6. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce qu'
    au moins un cylindre (A, C) limitrophe est susceptible de tourner autour d'un axe monté à rotation dans le châssis de la machine d'impression, et en de que le cylindre porte-blanchet (B) est susceptible de tourner d'un axe, déplaçable par rapport au châssis de machine au moyen de l'élément de réglage hydraulique.
  7. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que
    le cylindre porte-blanchet (B) est réalisé sous la forme de cylindre de transfert d'encre, dans un groupe d'encrage de la machine à imprimer, et le au moins un cylindre limitrophe (A, C) est réalisé sous la forme de cylindre broyeur.
  8. Procédé de réglage de la pression de pressage entre un cylindre porte-blanchet (B) et un cylindre (A, C) limitrophe, dans une machine à imprimer, par
    alimentation d'un élément de réglage (HA/B, HB/C) hydraulique disposé entre le cylindre porte-blanchet (B) et le cylindre (A, C) limitrophe, par un fluide sous pression issu d'une source de fluide sous pression (P), de manière que le cylindre porte-blanchet (B) soit plaqué sur le cylindre (A, C) limitrophe par l'élément de réglage (HA/B, HB/C) hydraulique,
    caractérisé par
    les étapes suivantes :
    interruption de l'amenée de fluide une foie la pression de pressage prédéterminée atteinte, et
    annulation de l'interruption d'amenée de fluide venant de la source de fluide sous pression (P) à l'élément de réglage hydraulique, après expiration d'une durée prédéterminée, pour un bref intervalle de temps, à l'aide d'une soupape d'isolement, intégrée dans le circuit de fluide sous pression reliant l'élément de réglage hydraulique à la source de fluide sous pression, afin de solliciter de nouveau l'élément de réglage hydraulique par une pression de valeur prédéterminée.
EP00100236A 1999-02-17 2000-01-17 Procédé et dispositif pour ajuster la force de pressage entre des rouleaux d'une machine à imprimer Expired - Lifetime EP1029672B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/251,985 US6098542A (en) 1999-02-17 1999-02-17 Method and device for force loading a rubber blanket roller in a printing press
US251985 1999-02-17

Publications (2)

Publication Number Publication Date
EP1029672A1 EP1029672A1 (fr) 2000-08-23
EP1029672B1 true EP1029672B1 (fr) 2003-07-09

Family

ID=22954182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00100236A Expired - Lifetime EP1029672B1 (fr) 1999-02-17 2000-01-17 Procédé et dispositif pour ajuster la force de pressage entre des rouleaux d'une machine à imprimer

Country Status (5)

Country Link
US (1) US6098542A (fr)
EP (1) EP1029672B1 (fr)
JP (1) JP2000233494A (fr)
AT (1) ATE244639T1 (fr)
DE (2) DE50002789D1 (fr)

Families Citing this family (22)

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DE19956149A1 (de) * 1999-11-23 2001-06-07 Roland Man Druckmasch Farbwerk für eine Druckmaschine
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DE10113313C2 (de) * 2001-03-20 2003-06-05 Koenig & Bauer Ag Vorrichtung zum Einstellen des Anpressdrucks einer verstellbar gelagerten Walze
ATE435115T1 (de) * 2001-12-06 2009-07-15 Koenig & Bauer Ag Vorrichtungen zum einstellen von walzen in einer druckmaschine
DE10262042B4 (de) * 2001-12-06 2005-11-10 Koenig & Bauer Ag Farbwerk mit zumindest drei Walzen bzw. Zylinder
DE10215422A1 (de) * 2002-04-08 2003-10-23 Roland Man Druckmasch Farb- oder Feuchtwerk einer Rotationsdruckmaschine
DE10244046B4 (de) * 2002-09-21 2006-02-02 Koenig & Bauer Ag Vorrichtung zum Einstellen des Anpressdrucks einer verstellbar gelagerten Walze
DE10261983A1 (de) * 2002-09-21 2004-04-08 Koenig & Bauer Ag Verfahren zum Einstellen des Anpressdrucks einer verstellbar gelagerten Walze
DE10333205B4 (de) * 2003-07-22 2007-02-22 Koenig & Bauer Ag Vorrichtung zum Einstellen des Anpressdrucks zwischen einer Walze mit zwei weiteren Walzen
ATE517743T1 (de) * 2003-09-26 2011-08-15 Koenig & Bauer Ag Walze eines farb- oder feuchtwerks einer druckmaschine
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
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JP5005907B2 (ja) * 2004-11-11 2012-08-22 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 印刷機
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DE102005045985B4 (de) * 2005-04-21 2012-11-29 Koenig & Bauer Aktiengesellschaft Druckeinheit und ein Verfahren zur Einstellung einer Druck-An-Stellung
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JP2008212826A (ja) * 2007-03-05 2008-09-18 Komori Corp 液体塗布機械の接触圧調整方法、及び、液体塗布機械の接触圧調整装置
DE102009001113B4 (de) * 2009-02-24 2016-03-17 Koenig & Bauer Ag Vorrichtung zum Einstellen einer Anpresskraft einer Walze
DE102009001218B4 (de) * 2009-02-27 2013-02-07 Koenig & Bauer Aktiengesellschaft Verfahren zur Temperierung wenigstens eines Zylinders oder einer Walze eines Druckwerkes einer Druckmaschine
CN103660532B (zh) * 2012-09-04 2017-08-22 海德堡印刷机械股份公司 用于再调节印刷机中的辊的压力的方法和装置
EP2906427B1 (fr) * 2012-10-10 2016-09-14 Koenig & Bauer AG Mécanismes d'encrage d'un groupe d'impression, groupe d'impression et procédé permettant de faire fonctionner un groupe d'impression

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US5448949A (en) * 1993-08-24 1995-09-12 Heidelberger Druckmaschinen Ag Method and device for adjusting a contact pressure between ink-carrying cylinders of a printing machine
JP3718275B2 (ja) * 1996-01-12 2005-11-24 株式会社小森コーポレーション 印刷機

Also Published As

Publication number Publication date
EP1029672A1 (fr) 2000-08-23
ATE244639T1 (de) 2003-07-15
DE10001582A1 (de) 2000-08-24
DE50002789D1 (de) 2003-08-14
JP2000233494A (ja) 2000-08-29
US6098542A (en) 2000-08-08

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