EP0455008A2 - Machine à imprimer offset avec un rouleau intermédiaire de raccordement entre les groupes d'encrage et de mouillage - Google Patents

Machine à imprimer offset avec un rouleau intermédiaire de raccordement entre les groupes d'encrage et de mouillage Download PDF

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Publication number
EP0455008A2
EP0455008A2 EP91105539A EP91105539A EP0455008A2 EP 0455008 A2 EP0455008 A2 EP 0455008A2 EP 91105539 A EP91105539 A EP 91105539A EP 91105539 A EP91105539 A EP 91105539A EP 0455008 A2 EP0455008 A2 EP 0455008A2
Authority
EP
European Patent Office
Prior art keywords
roller
dampening
inking
offset printing
intermediate 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.)
Withdrawn
Application number
EP91105539A
Other languages
German (de)
English (en)
Other versions
EP0455008A3 (en
Inventor
Hermann Beisel
Wiebke Wolter
Anton Rodi
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 EP0455008A2 publication Critical patent/EP0455008A2/fr
Publication of EP0455008A3 publication Critical patent/EP0455008A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/36—Inking-rollers serving also to apply ink repellants

Definitions

  • the invention relates to a printing press with an inking and dampening unit, the inking and dampening units having inking and dampening application rollers interacting with a printing form and can be connected to one another via at least one intermediate roller.
  • the inking and dampening units are connected to one another via an intermediate roller. If, for example, pre-dampening is to take place, the inking and dampening application rollers are at a distance from the plate cylinder of the offset printing press and are connected to one another via the intermediate roller.
  • the dampening solution conveyed from the dampening solution box by an immersion roller of the dampening unit is conveyed via a metering roller and possibly further rollers to the dampening application roller and from there passes via the intermediate roller to the first inking roller, viewed in the direction of rotation of the plate cylinder, and thus into the inking unit.
  • the inking and dampening application rollers which are in contact with the plate cylinder are coupled to one another via the intermediate roller.
  • Printing machines are known in which the intermediate roller is in contact with the inking and dampening application roller in the "washing position" and "pressure down" operating positions.
  • the intermediate roller is in contact with the inking and dampening application roller in the "washing position" and "pressure down" operating positions.
  • it can be advantageous to interrupt the connection to the inking unit i.e. the intermediate roller is only lying still on the dampening roller.
  • This position is also known as the "small separation”.
  • a so-called "large separation” is also known.
  • the intermediate roller is shifted in such a way that it rests only on the first inking roller. It can counteract stenciling, for example, by traversing to the side.
  • an offset printing machine provided with at least one intermediate roller is known.
  • the intermediate roller is mounted on a swivel frame which can be pivoted manually by means of a lever arrangement, as a result of which the intermediate roller can be brought into a spacing or contact position with the inking and dampening application roller.
  • German Offenlegungsschrift 23 43 935 describes a dampening unit for an offset printing press, in which the dampening solution supply is provided in the event of brief interruptions in printing and the inking roller is switched off and the intermediate roller is lifted off the latter to the inking unit is prevented and reduced in the dampening unit.
  • the intermediate roller is only connected to the dampening roller but not to the inking roller. In the "print on" operating position, the intermediate roller connects the inking and dampening units.
  • US Pat. No. 3,911,815 shows an offset printing machine with an intermediate roller which is mounted on a swivel frame on which there is an applicator roller which carries both fountain solution and ink.
  • the applicator roller interacts with the plate cylinder and the intermediate roller with a dampening agent-carrying roller of the dampening unit.
  • the applicator roller remains in contact with the intermediate roller; however, there is a spacing position between the applicator roller and the plate cylinder and the intermediate roller and the roller of the dampening unit.
  • the invention has for its object to provide an offset printing press that allows a particularly versatile, economical management to achieve optimal printing results. In particular, it should also be possible to shorten set-up times.
  • the intermediate roller is positionally variable so that its position relative to the ink and / or dampening roller is freely selectable adjustable (switchable) depending on the situation.
  • At least two actuators are provided, which effect the positioning of bearing points of the intermediate roller, the directions of action of which include an angle.
  • the bearing points of the intermediate roller can be shifted in such a way that they have the desired position (connecting position between Ink and dampening roller, connection to the inking roller, connection to the dampening roller, no connection to the inking and dampening roller). Since the actuator of each actuator can preferably be shifted into two positions and the directions of action of both actuators enclose an angle, the four above-mentioned positions of the intermediate roller can be achieved by appropriate, free control.
  • At least one actuator is preferably designed as a piston / cylinder unit. Both actuators preferably have this configuration. Alternatively, however, it is also possible that only one piston / cylinder unit is provided and the other actuator is formed by a spring. It is preferably a compression spring, in particular a helical compression spring. This leads to an economy version with a limited range of positions for the intermediate roller.
  • the ink and dampening roller are preferably also freely switchable in their positions relative to the printing form (plate cylinder provided with a printing plate) and, moreover, the intermediate roller can be freely switched according to the invention, a multitude of constellations of these rollers are possible which - depending on the situation at hand - allow optimal management.
  • the printer thus has the possibility of bringing the intermediate roller into a corresponding position depending on the situation at hand.
  • the printing press can be in "spin mode", for example, that is, its rollers rotate; however, it is not printed.
  • spin mode for example, that is, its rollers rotate; however, it is not printed.
  • Other "situations” are conceivable: the machine has just started printing, the "printing on” state is just present, the situations mentioned with or without inking on the corresponding rollers, the machine is in production, there is a washing position before etc.
  • the invention further relates to a method for operating an offset printing machine provided with an inking and dampening unit, the inking and dampening units having inking and dampening application rollers interacting with a printing form and being connectable via at least one intermediate roller, and the intermediate roller being in its position relative to the ink - and / or dampening roller can be freely shifted depending on the situation.
  • the situation-related position of the intermediate roller is - as already mentioned - dependent on the respectively existing and / or on the previously and / or in the future existing operating states of the offset printing press.
  • the inking unit 1 shows a roller diagram of an offset printing machine, not shown in detail.
  • An inking unit 1 and a dampening unit 2 are provided.
  • the inking unit 1 has an ink fountain 3 with an ink metering device on. From the ink fountain 3, a paint roller 4 takes dosed paint during operation.
  • a jack roller 5 interacts with the ink duct 4 and with a driven distribution cylinder 6.
  • the inking and dampening units 1, 2 also have further, driven cylinders 7, 8, 9 and 10. Furthermore, six rider and transfer rollers 11 to 16 and nine rubber rollers 17 to 25 are provided.
  • the dampening unit 2 has a dampening solution box 26 filled with dampening solution 27, an immersion roller 28 with a partial section of its circumference being immersed in the dampening solution 27.
  • the dipping roller 28 interacts with a metering roller 29.
  • a rubber roller 30 and an intermediate roller 31 are provided.
  • Both ink and fountain solution are fed to a printing form 32 via the roller arrangement described.
  • the printing form 32 is a printing plate (not shown) clamped onto a plate cylinder 33.
  • the transfer of ink and dampening solution from the inking unit 1 or dampening unit 2 to the printing plate is carried out by the rubber rollers 18, 20, 23, 25 and 30. Therefore, the rubber rollers 18, 20, 23 and 25 are referred to as inking rollers 34 and the rubber roller 30 assigned to the dampening unit 2 is referred to as the dampening roller 35.
  • the inking roller interacting with the intermediate roller 31 forms a first inking roller 34, viewed in the direction of rotation of the plate cylinder 33.
  • the inking rollers 34 and the dampening roller can 35 are displaced from their spaced position to the plate cylinder 33 in such a way that they come into contact with the latter (FIG. 2).
  • the position of the inking or dampening application rollers 34, 35 depends on the operating state of the offset printing press.
  • the intermediate roller 31 already mentioned can assume different positions according to the invention, in that, regardless of the position of the inking rollers 34 and / or the dampening roller 35, it either connects the first inking roller 34 to the dampening roller 35 or only connects to the first inking roller 34 or only with it the dampening roller 35 cooperates or finally takes up a distance from both the first inking roller 34 and the dampening roller 35.
  • the position of the intermediate roller 31 on the ink and dampening roller 34, 35 is shown in FIG. 2.
  • Figure 1 shows the distance to the two rollers.
  • the other two positions contact position only with the first inking roller 34, contact position only with the dampening application roller 35) are not shown in the figures because of the simple fact.
  • the position of the intermediate roller 31 is therefore situation-dependent, that is to say freely selectable, adjustable or switchable as a function of the present or desired operating state of the offset printing press.
  • the positioning of the intermediate roller 31 can either be done manually or with the aid of a program Machine control done. For manual control, it is advantageous if this is done remotely from the machine control panel.
  • This free controllability of the intermediate roller 31 gives the printer the opportunity to influence the distribution of ink and dampening solution depending on the situation, and as an alternative to a "permanent position" he can also shift the intermediate roller 31 into a position desired by him for certain intervals. Iterative operation is also possible.
  • FIG. 3 shows part of the roller pattern of the offset printing machine in the area of the intermediate roller 31.
  • the intermediate roller 31, which is designed as a traversing roller, is mounted on a U-shaped carrier 36.
  • the bearing points of the intermediate roller 31 are arranged on a web region 37 formed on the carrier 36, from which a first arm 38 and a second arm 39 extend.
  • the two In the position shown in FIG. 3, in which the intermediate roller 31 is in contact with the first inking roller 34 and the dampening roller 35, the inking and dampening rollers 34, 35 occupying their contact position with the plate cylinder 33, the two have Longitudinal axes of the arms 38 and 39 at an angle ⁇ to the horizontal 40.
  • the angle ⁇ is preferably in the range between 20 ° and 40 °, in particular 30 °.
  • the two arms 38 and 39 run parallel to one another.
  • a hole / pin connection 42 is provided, which forms an articulated coupling between the arm 38 and a piston rod 43 of a first actuator 44.
  • the first actuator 44 is designed as a pneumatic piston / cylinder unit 45.
  • the direction of action of the piston rod 43 is vertical, that is to say it is perpendicular to the horizontal 40.
  • the cylinder 46 of the piston / cylinder unit 41 has at its end opposite the piston rod 43 a flange plate 47 which is attached to the machine frame of the offset printing press an axis 48 is pivotally mounted.
  • the cylinder 46 is fixed in place on the machine frame and the hole-pin connection 42 is designed as an elongated hole-pin connection (not shown).
  • the piston rod 43 is fastened with a lock nut 49 (threaded bolt, threaded hole, lock nut) during the assembly of the offset printing machine.
  • an adjusting device with a lock nut 49 ' is provided, so that a length adjustment of a further piston rod 50 of a second actuator 51 is possible.
  • the second actuator 51 is also designed as a pneumatic piston / cylinder unit 52.
  • the connection between the second arm 38 and the piston rod 50 has no articulated connection. The arrangement is such that the piston rod 50 merges into the longitudinal extension of the second arm 39 in alignment. The directions of action of the piston rods 43 and 50 form an angle ⁇ between them.
  • the cylinder 53 of the second actuator 51 is provided at its end opposite the piston rod 50 with a flange plate 54 which is pivotally mounted on the machine frame of the offset printing press by means of an axis 55.
  • the actuators 44 and 51 are connected to a pneumatic control device via pressure hoses (not shown), which in turn can either be operated manually from the control panel of the offset printing press or can be operated program-controlled by the computer of a machine control.
  • Each actuator 44, 51 can assume two piston positions, that is, either its piston rod is retracted or extended.
  • the piston rods 43 and 50 both assume the extended position. The result of this is that the intermediate roller 31 comes into contact with the first inking roller 34 and the dampening roller 35. If the intermediate roller 31 is to take up the distance according to FIG. 1 to the inking and dampening roller 34, 35, then both piston rods are 43, 50 to shift into their retracted position by correspondingly actuating the associated actuators 44, 51.
  • the position of the intermediate roller can be freely selected by a corresponding control of the actuators 44, 51.
  • a desired position of the intermediate roller 31 can therefore always be achieved manually or by means of a program in the various operating states of the offset printing press (for example "print on”, “print off”, “pre-wet”, “washing position”).
  • a compression spring in particular a helical compression spring, is preferably selected as the spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
EP19910105539 1990-04-28 1991-04-08 Offset printing machine with an intermediate roller connecting the inking and the dampening unit Withdrawn EP0455008A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904013741 DE4013741A1 (de) 1990-04-28 1990-04-28 Offset-druckmaschine mit zwischenwalze zur verbindung von farb- und feuchtwerk
DE4013741 1990-04-28

Publications (2)

Publication Number Publication Date
EP0455008A2 true EP0455008A2 (fr) 1991-11-06
EP0455008A3 EP0455008A3 (en) 1992-02-12

Family

ID=6405365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910105539 Withdrawn EP0455008A3 (en) 1990-04-28 1991-04-08 Offset printing machine with an intermediate roller connecting the inking and the dampening unit

Country Status (6)

Country Link
EP (1) EP0455008A3 (fr)
JP (1) JPH04229262A (fr)
CN (1) CN1056278A (fr)
AU (1) AU7534891A (fr)
CA (1) CA2038777A1 (fr)
DE (1) DE4013741A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506639A1 (de) * 1995-02-25 1996-09-05 Roland Man Druckmasch Steuerung für ein kombiniertes Farb-Feuchtwerk
FR2735068A1 (fr) * 1995-06-08 1996-12-13 Roland Man Druckmasch Mecanisme d'encrage pour une unite d'impression offset et procede pour encrer et mouiller la forme d'impression
EP1457323A1 (fr) * 2003-03-12 2004-09-15 MAN Roland Druckmaschinen AG Dispositif d'encrage et d'humification combiné pour une machine d'impression

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419850C2 (de) * 1994-06-07 2002-02-28 Koenig & Bauer Ag Antriebs- und changierfähige Brückenwalze
DE4429460B4 (de) * 1994-08-19 2005-10-13 Koenig & Bauer Ag Drehantrieb für Walzen in Farb- und/oder Feucht- und/oder Lackierwerken
DE19541418A1 (de) * 1995-11-07 1997-05-15 Heidelberger Druckmasch Ag Offsetdruckmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926116A (en) * 1974-07-01 1975-12-16 Webcrafters Inc Dampening apparatus for offset printing press
GB2077660A (en) * 1980-06-13 1981-12-23 Vickers Ltd Lithographic printing presses
DE3643936A1 (de) * 1986-05-05 1987-11-12 Polygraph Leipzig Vorrichtung zum abheben einer changierenden brueckenwalze
DE3835466A1 (de) * 1987-10-29 1989-06-08 Polygraph Leipzig Verfahren und einrichtung zur beseitigung von stoerschablonen in kombin. feucht- und farbwerken

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860579A (en) * 1956-01-10 1958-11-18 Michle Goss Dexter Inc Ink roller socket construction
GB1207220A (en) * 1968-07-03 1970-09-30 Pfizer & Co C Paper coating and coated paper
US3911815A (en) * 1972-05-02 1975-10-14 Roland Offsetmaschf Mechanism for dampening the printing plate of an offset printing press
DE2343935A1 (de) * 1973-08-31 1975-03-13 Maschf Augsburg Nuernberg Ag Feuchtwerk fuer rotations-offsetdruckmaschinen
DE2845932A1 (de) * 1978-10-21 1980-04-24 Heidelberger Druckmasch Ag Kombiniertes feucht-farbwerk fuer offsetdruckwerke
DE3034588C2 (de) * 1980-09-13 1982-11-11 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Offset-Rotationsdruckmaschine mit einer Einrichtung zur Unterbrechung der Feuchtmittelzufuhr
DD156238B1 (de) * 1981-02-26 1989-03-22 Arndt Jentzsch Verreibwalze in druckmaschinen
DE3146223C2 (de) * 1981-11-21 1985-03-21 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Feucht-Farbwerk für Offsetdruckmaschinen
JP2657275B2 (ja) * 1988-01-14 1997-09-24 株式会社小森コーポレーション 印刷機の給水装置
JPH0741707B2 (ja) * 1988-05-06 1995-05-10 リョービ株式会社 操作レバーを有するオフセット印刷機
DE3825517A1 (de) * 1988-07-27 1990-02-01 Wifag Maschf Vorrichtung zum an- und abstellen sowie einstellen von farbwerks- bzw. feuchtwerkswalzen einer druckmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926116A (en) * 1974-07-01 1975-12-16 Webcrafters Inc Dampening apparatus for offset printing press
GB2077660A (en) * 1980-06-13 1981-12-23 Vickers Ltd Lithographic printing presses
DE3643936A1 (de) * 1986-05-05 1987-11-12 Polygraph Leipzig Vorrichtung zum abheben einer changierenden brueckenwalze
DE3835466A1 (de) * 1987-10-29 1989-06-08 Polygraph Leipzig Verfahren und einrichtung zur beseitigung von stoerschablonen in kombin. feucht- und farbwerken

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506639A1 (de) * 1995-02-25 1996-09-05 Roland Man Druckmasch Steuerung für ein kombiniertes Farb-Feuchtwerk
FR2735068A1 (fr) * 1995-06-08 1996-12-13 Roland Man Druckmasch Mecanisme d'encrage pour une unite d'impression offset et procede pour encrer et mouiller la forme d'impression
EP1457323A1 (fr) * 2003-03-12 2004-09-15 MAN Roland Druckmaschinen AG Dispositif d'encrage et d'humification combiné pour une machine d'impression

Also Published As

Publication number Publication date
DE4013741A1 (de) 1991-10-31
EP0455008A3 (en) 1992-02-12
CN1056278A (zh) 1991-11-20
JPH04229262A (ja) 1992-08-18
AU7534891A (en) 1991-11-07
CA2038777A1 (fr) 1991-10-29

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