EP0839652A2 - Méthode de nettoyage des cylindres et des rouleaux dans une machine à imprimer - Google Patents
Méthode de nettoyage des cylindres et des rouleaux dans une machine à imprimer Download PDFInfo
- Publication number
- EP0839652A2 EP0839652A2 EP97117937A EP97117937A EP0839652A2 EP 0839652 A2 EP0839652 A2 EP 0839652A2 EP 97117937 A EP97117937 A EP 97117937A EP 97117937 A EP97117937 A EP 97117937A EP 0839652 A2 EP0839652 A2 EP 0839652A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- dampening
- rollers
- unit
- driven
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
Definitions
- the invention relates to a method for cleaning cylinders and rollers in a printing press, preferably an offset printing press or an inline coating unit according to the preamble of the respective main claim.
- a method for cleaning cylinders and rollers is known from DE 195 01 806 A1, according to which the dampening unit roller train is also cleaned.
- the dampening roller unit is integrated into the inking unit roller by means of a bridge roller.
- the dampening roller can be turned on or off by the plate cylinder.
- a dampening unit for an offset printing press is known from EP 0 450 155 B1, in which a dampening application roller is mounted on and off for the plate cylinder and for a dampening roller (immersion roller).
- the dampening roller is driven by the plate cylinder, i.e. when switched on and off, it runs at its peripheral speed.
- the dampening roller immersed in a dampening solution tank has its own, speed-controllable drive, so that the required amount of dampening solution can be fed in according to the dampening solution requirement of the printing form at different machine speeds.
- the coating device has a scoop roller and an applicator roller in contact with a forme cylinder. Furthermore, the scoop roller is assigned to a metering roller. The scoop roller is coupled via a gear transmission to a separate speed-controllable and direction-switchable electric drive.
- the cleaning fluid which reduces the coefficient of friction, the color to be processed or the varnish, the roller pressure and or the material pairing itself reduce the external friction of at least two rollers in contact with one another on their contact surfaces in such a way that the transferable peripheral force goes to zero.
- at least one roller can stop "or stick-slip movements occur on the roller surface.
- a stationary roller acts like a wiping element (analogous to a doctor blade) and squeegees the detergent ink / varnish.
- the emulsion can get into the dampening solution container or, if necessary, into a lacquer storage container and contaminate the liquid medium present there, so contaminated liquid media have to be exchanged, which means additional effort.
- the object of the invention is therefore to provide a method which avoids the disadvantages mentioned, in particular in the operating mode Cleaning of rollers "(and of cylinders) the external friction is maintained so that a drop in the transferable peripheral force in the roller pair is avoided.
- a printing unit of a preferably offset printing machine it is provided to clean the plate cylinder and the dampening unit roller in addition to the inking unit roller train.
- the inking unit roller, the plate cylinder and the dampening unit roller can be included in the cleaning process individually, in groups or together will.
- the dampening roller unit is integrated into the inking unit roller via a bridge roller.
- the dampening roller of the dampening unit roller can also be placed on the plate cylinder.
- a vegetable cleaning agent and / or water is used as the cleaning fluid.
- the dampening solution has been removed from the dampening solution container or has been lowered so far that the dampening roller no longer dips into the dampening solution.
- the dampening duct is coupled to the separate speed-controllable drive and is driven for a limited time at an excessive speed in relation to a maximum production humidity value that is common in printing operations.
- the machine speed of the printing unit is set to the speed at which the dampening roller driven by the plate cylinder has a synchronous peripheral speed to the separately driven dampening roller.
- the working method is not limited to a single drum roller in a printing unit. Rather, this is also suitable for coating units which, in addition to the forme cylinder, have at least one application roller and an adjacent duct roller (two-roller mill).
- the metering roller can additionally be assigned a metering roller, or further transfer rollers can be arranged between the application roller and the doctor roller.
- a spray tube is assigned to the roll nip for the application of cleaning fluid.
- the duct roller is also coupled to a separate speed-controllable motor drive.
- the application roller is coupled to the forme cylinder via a gear drive.
- the duct roller is driven at a speed that is temporarily increased to a value analogous to the dampening unit operation.
- the applicator roller is driven by the forme cylinder and this with synchronous peripheral speed.
- the printing unit essentially consists of an inking roller 4, a dampening roller 3, a plate cylinder 1 and a blanket cylinder 2.
- the inking roller 4 is assigned a spray device which can be operated with a vegetable cleaning agent and / or water.
- the plate cylinder 1 is assigned to the inking roller train 4, inking rollers 13 and a dampening roller roller 3 belonging to the dampening roller train 3 can be switched on and off.
- the dampening unit roller train 3 can be coupled to the inking unit roller train 4 via a bridge roller 5. Further components of the printing unit will not be discussed here.
- a doctor device 11 is arranged on one of the last rollers of the inking unit roller train 4, which is received in a swivel joint and can be pivoted to the roller by means of an actuating device 10 for switching it on and off.
- the actuating device 10 and the spray device can be controlled by means of a control station.
- the dampening unit roller train 3 has a dampening roller 7 which is coupled to a separate, speed-controllable drive and which is immersed in a dampening agent reservoir 9.
- the dampening roller 7 is in contact with a metering roller 8.
- the bridge roller 5 is assigned to the dampening roller 6 as a rider roller.
- the dampening roller can carry an additional rider roller 12 which is arranged adjacent to the bridge roller 5.
- the bridge roller 5 resting on the dampening roller 6 is coupled to the inking roller 4.
- the dampening unit roller 3 is thus integrated into the inking unit roller 4.
- the drive of the dampening duct 7 is activated and the dampening duct 7 is operated for a limited time at an excessive peripheral speed in relation to a value customary in printing operation.
- the machine speed of the printing unit is set to a defined speed at which the peripheral speeds of the dampening roller 6 driven by the plate cylinder 1 are synchronized with the dampening roller 7. It has been found that, for the cleaning process, favorable synchronous speeds in a range from 3000 to 8000 sheets per hour can be achieved.
- the metering roller 8 adjacent to the dampening roller 7 is driven by the damping roller 7 by means of friction.
- dampening roller 3 If the dampening roller 3 is designed with an additional rider roller 12 resting on the dampening roller 6, it can be pivoted from its position 12 in the direction of the metering roller 8 in such a way that the rider roller 12 then assumes the position 12 'and with the dampening roller 6 and Metering roller 8 is in contact. This roller position 12 'additionally increases the transferable peripheral force.
- the wet doctor 7 is driven as already described.
- roller train of a coating unit is shown.
- An application roller 15 is in contact with a forme cylinder 14.
- a duct roller 17 immersing in a paint reservoir 19 is arranged, and both rollers 15, 17 are coupled by a transfer roller 16.
- the doctor roller 17 carries a metering roller 18.
- a spray tube for cleaning fluid (not shown) is assigned to the roller gap, which is formed from the transfer roller 16 and the doctor roller 17.
- the duct roller 17 is coupled to a separate, speed-controllable drive and the application roller 15 engages in a form-fitting manner with the drive of the forme cylinder 14.
- the duct roller 17 is driven for a limited time by the drive to a speed value which exceeds the usual production paint value.
- the peripheral speed of the application roller 15 is controlled by the forme cylinder 14 in such a way that the duct roller 17 and the application roller 15 can be operated at a synchronous peripheral speed.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19645169A DE19645169C2 (de) | 1996-11-02 | 1996-11-02 | Verfahren zur Reinigung von Zylindern und Walzen in einer Druckmaschine |
DE19645169 | 1996-11-02 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0839652A2 true EP0839652A2 (fr) | 1998-05-06 |
EP0839652A3 EP0839652A3 (fr) | 1998-12-02 |
EP0839652B1 EP0839652B1 (fr) | 2001-04-04 |
Family
ID=7810449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97117937A Expired - Lifetime EP0839652B1 (fr) | 1996-11-02 | 1997-10-16 | Méthode de nettoyage des cylindres et des rouleaux dans une machine à imprimer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0839652B1 (fr) |
DE (2) | DE19645169C2 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7373882B2 (en) | 2004-12-21 | 2008-05-20 | Heidelberger Druckmaschinen Ag | Method for washing an anilox inking unit of a printing press |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004031946B4 (de) * | 2004-06-30 | 2021-03-18 | Heidelberger Druckmaschinen Ag | Verfahren zum Antreiben von Walzen eines Druckwerkes einer Druckmaschine |
DE102007004217A1 (de) | 2007-01-27 | 2008-07-31 | Man Roland Druckmaschinen Ag | Verfahren und Vorrichtung zur Reinigung von Zylindern und Walzen in einer Druckmaschine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4369734A (en) * | 1980-03-17 | 1983-01-25 | M.A.N.-Roland Druckmaschinen Aktiengesellschaft | Varnishing assembly in a printing press having self-cleaning feature |
DE3507210A1 (de) * | 1985-03-01 | 1986-09-04 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Waschvorrichtung fuer das gummituch an offset-rotationsdruckmaschinen |
DE3620156A1 (de) * | 1985-06-25 | 1987-01-08 | Polygraph Leipzig | Verfahren und einrichtung zur beseitigung von putzen auf der druckplatte |
DE3638469A1 (de) * | 1986-04-01 | 1987-10-08 | Polygraph Leipzig | Verfahren und vorrichtung zum antrieb einer lackiereinrichtung |
DE3832527A1 (de) * | 1987-09-29 | 1989-04-13 | Jpe Kk | Befeuchtungssystem fuer eine offsetdruckmaschine |
EP0673770A1 (fr) * | 1994-03-24 | 1995-09-27 | MAN Roland Druckmaschinen AG | Procédé et dispositif pour enlever des mouches de la plaque d'impression d'une machine à imprimer |
DE19501806A1 (de) * | 1995-01-21 | 1996-07-25 | Roland Man Druckmasch | Verfahren zur Reinigung von Zylindern und Walzen eines Druckwerkes einer Druckmaschine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4011039C2 (de) * | 1990-04-05 | 1996-03-14 | Roland Man Druckmasch | Verfahren zum Befeuchten und Einfärben eines Plattenzylinders einer Mehrfarben-Offset-Bogenrotationsdruckmaschine |
-
1996
- 1996-11-02 DE DE19645169A patent/DE19645169C2/de not_active Expired - Fee Related
-
1997
- 1997-10-16 EP EP97117937A patent/EP0839652B1/fr not_active Expired - Lifetime
- 1997-10-16 DE DE59703283T patent/DE59703283D1/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4369734A (en) * | 1980-03-17 | 1983-01-25 | M.A.N.-Roland Druckmaschinen Aktiengesellschaft | Varnishing assembly in a printing press having self-cleaning feature |
DE3507210A1 (de) * | 1985-03-01 | 1986-09-04 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Waschvorrichtung fuer das gummituch an offset-rotationsdruckmaschinen |
DE3620156A1 (de) * | 1985-06-25 | 1987-01-08 | Polygraph Leipzig | Verfahren und einrichtung zur beseitigung von putzen auf der druckplatte |
DE3638469A1 (de) * | 1986-04-01 | 1987-10-08 | Polygraph Leipzig | Verfahren und vorrichtung zum antrieb einer lackiereinrichtung |
DE3832527A1 (de) * | 1987-09-29 | 1989-04-13 | Jpe Kk | Befeuchtungssystem fuer eine offsetdruckmaschine |
EP0673770A1 (fr) * | 1994-03-24 | 1995-09-27 | MAN Roland Druckmaschinen AG | Procédé et dispositif pour enlever des mouches de la plaque d'impression d'une machine à imprimer |
DE19501806A1 (de) * | 1995-01-21 | 1996-07-25 | Roland Man Druckmasch | Verfahren zur Reinigung von Zylindern und Walzen eines Druckwerkes einer Druckmaschine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7373882B2 (en) | 2004-12-21 | 2008-05-20 | Heidelberger Druckmaschinen Ag | Method for washing an anilox inking unit of a printing press |
Also Published As
Publication number | Publication date |
---|---|
EP0839652B1 (fr) | 2001-04-04 |
DE59703283D1 (de) | 2001-05-10 |
EP0839652A3 (fr) | 1998-12-02 |
DE19645169A1 (de) | 1998-05-14 |
DE19645169C2 (de) | 2000-02-03 |
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