EP0788877A1 - Chambre de racle - Google Patents

Chambre de racle Download PDF

Info

Publication number: EP0788877A1
Authority: EP; European Patent Office
Prior art keywords: doctor blade; chamber; cylinder; squeegee; chamber doctor
Prior art date: 1996-02-09
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

Application number

EP97101603A

Other languages

German (de)

English (en)

Other versions

EP0788877B1 (fr

Inventor

Wolfgang Schönberger

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.)

Manroland AG

Original Assignee

MAN Roland 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.)

1996-02-09

Filing date

1997-02-03

Publication date

1997-08-13

1997-02-03 Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG

1997-08-13 Publication of EP0788877A1 publication Critical patent/EP0788877A1/fr

2000-08-16 Application granted granted Critical

2000-08-16 Publication of EP0788877B1 publication Critical patent/EP0788877B1/fr

2017-02-03 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/027—Ink rail devices for inking ink rollers

Definitions

the invention relates to a chambered doctor blade for inking a recesses for ink absorption of a cylinder of a printing press.
the cylinder can be, for. B. to be a gravure cylinder or an anilox roller of a short inking unit.
DE 44 25 478 A1 shows a chambered doctor blade for inking a recesses for ink absorption in a cylinder of a printing press. It has doctor blades that automatically adjust themselves to the cylinder according to their wear. The doctor blades perform a rotary movement, for this purpose, since they are involved in the formation of the ink chamber, they have to be sealed relative to the chamber doctor body which is stationary relative to them. Sealing is carried out with a contact seal or contactless as a gap seal. The sealing point is wetted with printing ink, which cools down during printing breaks and is therefore tough. With longer pauses in printing, e.g. B. after a day, the paint literally dries up. The squeegee tracking is difficult or stops completely.
DE 42 13 660 C2 shows a chambered doctor blade, in which the working and closing doctor blades are each slidably received in a longitudinal slot of the chambered doctor blade body and are pressed against the cylinder to be inked by means of springs.
ink penetrates the guide gap between the doctor blade and the chamber doctor body and, if necessary, completely fills the longitudinal slot.
the paint sticks to the squeegees, which leads to the problems already mentioned.
the object is achieved in a generic doctor blade by using the features of the characterizing part of claim 1. Thanks to the possibility of moving away, such a distance between the squeegee and sealing and guiding elements can be created during printing breaks that the ink otherwise held at gap points by capillary forces can flow away. Drainage options are also created for paint collections. Since the contact or gap points advantageously open immediately after printing, the color, which is still warm and at this time still relatively free-flowing, can flow off easily. The chambered doctor blade can now remain in this state for any length of time without the doctor blade tracking elements sticking together.
FIGS. 1.1 and 1.2 show a chambered doctor blade 1 which can be set on a cylinder 2 which is to be inked and which has recesses for ink absorption.
the cylinder 2 can be, for example, an anilox roller of an inking unit of a printing press.
the chambered doctor blade 1 has an ink chamber 3 which is open toward the cylinder 2 and which is delimited by a chambered doctor blade body 4, a working doctor blade 5, a closing strip 6 which is spaced apart from the cylinder 2 and is delimited on the end face by side parts. The latter are not shown.
the side parts can be designed as sheet metal parts and rest on the end faces of the working squeegee 5 and the closing bar 6. But you can also from walls of the doctor blade body 4 are formed.
the working squeegee 5 could protrude over the side parts and rest on them with extensive movement in the direction of their plane. However, this is not the subject of the invention and is therefore not described in more detail, also in the following examples.
the working squeegee 5 is fastened to a holder 7 which is mounted on the chamber squeegee body 4 by means of bearing bolts 8.
the holder 7 is acted upon by the force of a compression spring 9 supported on the chamber doctor blade body 4, as a result of which the working doctor blade 5 is pressed against the cylinder 2 and is adjusted in accordance with the wear.
a tracking position is shown in dashed lines.
the holder 7 has a sealing surface 10, which forms a gap seal together with a sealing edge 11 of the chamber doctor body 4.
the size of the gap is approximately 0.1 to 1.0 mm. Gap seals are dimensioned similarly in the following examples as well.
the sealing surface 10 is advantageously curved with the radius around the pivot point of the holder 7 (bearing bolt 8), as a result of which the gap width is kept constant during pivoting.
Fig. 1.1. shows the doctor blade 1 in the state employed on the cylinder 2. It is filled with paint and colors the rotating cylinder 2.
Fig. 1.2 shows the chamber doctor blade 1 in the parked state.
the means for parking are not the subject of the invention and are therefore not shown.
the compression spring 9 pivots the holder 7 upwards in the position shown, since the working squeegee 5 is no longer supported on the cylinder 2 and does not exert any counterforce to the force of the compression spring 9.
the sealing surface 10 and the sealing edge 11 move away from one another and open the gap seal. As a result, these sealing elements are spaced apart and cannot stick to one another, and the paint on them flows off.
the following examples show other variants for moving the squeegee as well as other chamber squeegee designs.
the chambered doctor blade 12 according to FIGS. 2.1 and 2.2 has a closing doctor blade 13 instead of a closing bar.
a chamber doctor blade body 15 and a working doctor blade 16 are also involved in the formation of the ink chamber 14.
position number 2 is retained for the cylinder.
the holder 17 accommodating the working doctor blade 16 is rectilinear in a straight guide 18 of the chamber doctor blade body 15 movable.
Tension springs 19 are suspended on the chamber doctor blade body 15 and on the holder 17 and pull the working doctor blade 16 against the cylinder 2.
the holder 17 has a flat sealing surface 20 which, in cooperation with a sealing edge 21 of the chamber doctor body 15, forms a gap seal.
the closing squeegee 13 is inserted into a longitudinal slot 22 of the chamber squeegee body 15 and is pressed against the cylinder 2 by compression springs 23, 24 which are supported in the base of the longitudinal slot 22.
FIGS. 3.1 and 3.2 show a chamber doctor blade 29, the ink chamber 30 of which is delimited by a chamber doctor blade body 31, a working doctor blade 32 and a closing doctor blade 33.
the working doctor blade 32 is fastened to a holder 34 which is pivotably mounted on the chamber doctor blade body 31 by means of bearing bolts 35.
the closing squeegee 33 is received by a holder 36 which is also pivotably mounted on the chamber squeegee body 31 by means of bearing bolts 37.
the working squeegee 32 and the closing squeegee 33 are pressed onto the cylinder 2 to be inked and adjusted by means of working cylinders 38, 39.
the working cylinders 38, 39 engage on the brackets 34, 36 and are supported on the doctor blade body 31.
a sealing surface 40 which forms a gap seal with a sealing edge 41, a side surface of the working squeegee 32.
a seal 42 is inserted in the latter, which cooperates with a sealing surface 43, which advantageously has a curvature with the radius around the pivot point of the bracket 36 (bearing pin 37).
the chambered doctor blade 29 does not have to be moved away from the cylinder to be inked in order to move the parts that are at risk of being bonded.
a signal is sufficient with which the working cylinders 38, 39 are reversed.
the retracting piston rods of the working cylinders 38, 39 pivot the brackets 34, 36 into the position shown in FIG. 3.2.
the working squeegee 32 with its sealing surface 40 has moved away from the sealing edge 41.
the sealing surface 43 of the holder 36 is also pivoted away from the seal 42.
the chambered doctor blade 29 itself is shown in FIG. 3.2 in its position set off from the cylinder 2.
working cylinders can also be used to actuate a holder if it carries the sealing surface which cooperates with the sealing edge of the chamber doctor blade body or if the holder is moved in a straight line.
a working cylinder would have to be placed in the chamber doctor body 15.
the working cylinders 38, 39 can be designed as hydraulic or pneumatic.
electrical lifting magnets can also be used. If in this case the gravity of the brackets 34, 36 is not sufficient for the stopping movement, tension springs can be attached to these.
FIGS. 4.1 and 4.2 show a chamber doctor blade 44, the ink chamber 45 of which is delimited by a chamber doctor blade body 46, a working doctor blade 47 and a closing strip 48.
the working squeegee 47 is fastened to a holder 49 which is pivotably mounted on the chamber squeegee body 46 by means of bearing bolts 50.
the holder 49 is sealed towards the chamber doctor body 46 by means of a gap seal, formed by a sealing surface 51 of the holder 49 and a sealing edge 52 on the chamber doctor body 46.
the working squeegee 47 is pressed against the cylinder 2 to be inked by applying force to the holder 49 by means of a compression spring 53 supported on the chamber squeegee body 46.
the shut-off movement of the doctor blade 44 from the cylinder 2 includes a pivoting such that the sealing edge 52 occupies the deepest point of the ink chamber 45.
the tilting can be carried out by a corresponding movement of the chamber doctor bar, not shown, on which the chamber doctor 44 is arranged. The tilting is superfluous if the ink chamber 13 is designed so that the sealing edge 52 is inherently at its lowest point. In the position shown in Fig.
the ink chamber 45 runs completely empty. It has a certain self-cleaning effect. It is also advantageous that no ink is lost when the chamber doctor blade 45 is removed, since the ink which has run out is collected in an ink pan and fed to the ink fountain.
doctor blade, sealing and actuation variants given as examples can be combined as desired.

Landscapes

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

EP97101603A 1996-02-09 1997-02-03 Chambre de racle Expired - Lifetime EP0788877B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE29602257U		1996-02-09
DE29602257U DE29602257U1 (de)	1996-02-09	1996-02-09	Kammerrakel

Publications (2)

Publication Number	Publication Date
EP0788877A1 true EP0788877A1 (fr)	1997-08-13
EP0788877B1 EP0788877B1 (fr)	2000-08-16

Family

ID=8019236

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP97101603A Expired - Lifetime EP0788877B1 (fr)	1996-02-09	1997-02-03	Chambre de racle

Country Status (4)

Country	Link
US (1)	US6053102A (fr)
EP (1)	EP0788877B1 (fr)
CA (1)	CA2197169C (fr)
DE (2)	DE29602257U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6581516B1 (en)	1999-10-11	2003-06-24	Heidelberger Drückmaschinen AG	Doctor device in an inking unit of a rotary printing machine
DE102005050735A1 (de) *	2005-10-22	2007-04-26	Koenig & Bauer Ag	Kammerrakel für Druckmaschinen und Verfahren zum Betreiben einer derartigen Kammerrakel
DE102007025166A1 (de) *	2007-05-29	2009-01-22	Kba-Metronic Ag	Steuerbare Rakelmesser

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19914099C1 (de) *	1999-03-27	2000-06-21	Roland Man Druckmasch	Verfahren und Vorrichtung zum Entfernen von Farbe oder ähnlichen Medien aus einem einseitig offenen Behälter, dem eine Walze zugeordnet ist, in einer Rotationsdruckmaschine
ITMI20031539A1 (it) *	2003-07-25	2003-10-24	Percivalle Special Converting S A S Di Percivall	Unita' di inchiostrazione e raclatura per un gruppo di stampa e spalmatura rotocalcografica.
JP2005088586A (ja) *	2003-09-12	2005-04-07	Metronic Ag	インキ壺
US7013104B2 (en) *	2004-03-12	2006-03-14	Lexmark International, Inc.	Toner regulating system having toner regulating member with metallic coating on flexible substrate
US7236729B2 (en) *	2004-07-27	2007-06-26	Lexmark International, Inc.	Electrophotographic toner regulating member with induced strain outside elastic response region
JP3965416B1 (ja) *	2006-06-16	2007-08-29	株式会社堅牢防水化学	布帛への樹脂加工に使用するドクターブレード及びそれを使用した樹脂加工法
CN104028424A (zh) *	2014-05-15	2014-09-10	阜阳荣泽涂布技术包装有限公司	一种高速微凹涂布刮刀座
CN104249545A (zh) *	2014-09-30	2014-12-31	河南卓立膜材料股份有限公司	一种保护涂布版辊的刮刀装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0294022A1 (fr) *	1987-05-11	1988-12-07	Vickers Plc	Imprimerie
DE4213660C2 (de)	1992-04-25	1995-06-08	Koenig & Bauer Ag	Kurzfarbwerk für eine Rollenrotationsdruckmaschine
DE4425478A1 (de)	1994-07-19	1996-02-08	Roland Man Druckmasch	Kammerrakel

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE257802C (fr) *
US2377110A (en) *	1943-09-15	1945-05-29	Rice Barton Corp	Printing roll inking device
US3273535A (en) *	1964-10-06	1966-09-20	Rice Barton Corp	Trailing-blade-coater including adjustable drag-blade
GB1108681A (en) *	1966-01-10	1968-04-03	Miehle Goss Dexter Inc	Printing press
GB1222700A (en) *	1967-07-17	1971-02-17	Karl Antonius Klingler	Improvements in or relating to doctor devices for rotary intaglio printing machines
US4009657A (en) *	1975-02-25	1977-03-01	Scott Paper Company	Apparatus for applying fluid to an intaglio roll for transfer to a soft, absorbent fibrous web
DD257802A1 (de) *	1987-02-27	1988-06-29	Polygraph Leipzig	Unterschaechtiger farbkasten fuer druckmaschinen
US5117752A (en) *	1991-04-25	1992-06-02	Rockwell International Corporation	Ultrasonic ink seal for use in multicolor printing press
DE4138807C1 (en) *	1991-11-26	1993-06-03	Cornelis Wapenveld Nl Gorter	Colour chamber doctor - is for colour-transfer, screened circular cylindrical body such as screen roller or engraved cylinder
DE4213663C2 (de) *	1992-04-25	1995-06-08	Koenig & Bauer Ag	Rakelbalken für ein Kurzfarbwerk einer Rollenrotationsdruckmaschine
DE4440040C2 (de) *	1994-11-10	2002-09-12	Koenig & Bauer Ag	Haltevorrichtung für eine Kammerrakel
JPH08276567A (ja) *	1995-04-05	1996-10-22	Dainippon Printing Co Ltd	印刷機におけるインキング装置

1996
- 1996-02-09 DE DE29602257U patent/DE29602257U1/de not_active Expired - Lifetime
1997
- 1997-02-03 DE DE59702171T patent/DE59702171D1/de not_active Expired - Fee Related
- 1997-02-03 EP EP97101603A patent/EP0788877B1/fr not_active Expired - Lifetime
- 1997-02-10 CA CA002197169A patent/CA2197169C/fr not_active Expired - Fee Related
- 1997-02-10 US US08/799,044 patent/US6053102A/en not_active Expired - Fee Related

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0294022A1 (fr) *	1987-05-11	1988-12-07	Vickers Plc	Imprimerie
DE4213660C2 (de)	1992-04-25	1995-06-08	Koenig & Bauer Ag	Kurzfarbwerk für eine Rollenrotationsdruckmaschine
DE4425478A1 (de)	1994-07-19	1996-02-08	Roland Man Druckmasch	Kammerrakel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6581516B1 (en)	1999-10-11	2003-06-24	Heidelberger Drückmaschinen AG	Doctor device in an inking unit of a rotary printing machine
DE102005050735A1 (de) *	2005-10-22	2007-04-26	Koenig & Bauer Ag	Kammerrakel für Druckmaschinen und Verfahren zum Betreiben einer derartigen Kammerrakel
DE102007025166A1 (de) *	2007-05-29	2009-01-22	Kba-Metronic Ag	Steuerbare Rakelmesser
EP1997633A3 (fr) *	2007-05-29	2012-06-27	KBA-MePrint AG	Chambre à racles pouvant être commandée

Also Published As

Publication number	Publication date
EP0788877B1 (fr)	2000-08-16
DE29602257U1 (de)	1996-03-28
DE59702171D1 (de)	2000-09-21
CA2197169A1 (fr)	1997-08-10
US6053102A (en)	2000-04-25
CA2197169C (fr)	2000-04-04

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1997-06-27	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1998-12-30	17Q	First examination report despatched	Effective date: 19981116
1999-09-27	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
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2000-06-30	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
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2000-09-15	ET	Fr: translation filed
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2001-06-15	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
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Publication	Publication Date	Title
DE3117341C2 (de)	1988-07-07	Farbwerk
DE3704433C2 (fr)	1989-01-19
DE3505598C2 (de)	1986-08-14	Spülfarbwerk mit geteilter Farbkammerrakel
EP0788877B1 (fr)	2000-08-16	Chambre de racle
DE3102139A1 (de)	1981-11-26	"druckpresse zum bedrucken von blaettern, insbesondere aus wellpappe"
EP0315817A2 (fr)	1989-05-17	Machine pour impression sérigraphique
DE1936906A1 (de)	1971-02-04	Vorrichtung zum Reinigen der Raeder von Fahrzeugen
DD285952A5 (de)	1991-01-10	Farbwerk fuer druckmaschine
DE4425478A1 (de)	1996-02-08	Kammerrakel
DE3806609C2 (de)	1996-10-17	Waschvorrichtung zum Waschen der Mantelfläche eines Gummituchzylinders einer Offset-Druckmaschine
EP0845352A1 (fr)	1998-06-03	Dispositif de déplacement de cylindres d'un groupe d'impression d'une machine rotative à imprimer
DE4213669C2 (de)	1995-06-08	Vorrichtung zur Anstellung einer Kammerrakel
DD230483A3 (de)	1985-12-04	Auswechselbare trennwand fuer einen farbkasten
EP0311730B1 (fr)	1993-03-10	Dispositif de raclage
DE69835725T2 (de)	2007-09-13	Verfahren und Vorrichtung zum Einfärben einer Druckplatte mit einem Farbbehälter
EP0280877B1 (fr)	1991-09-11	Etiqueteuse à main
DE1107249B (de)	1961-05-25	Rakelvorrichtung fuer Siebdruckmaschinen
DE19848773C2 (de)	2002-11-28	Vorrichtung zum Anstellen und Entfernen einer Farbkammerrakel an die Rasterwalze einer Druckmaschine
EP1092539A1 (fr)	2001-04-18	Dispositif pour rendre etanche un reservoir de transport d'encre dans des machines d'impression
DD275992A3 (de)	1990-02-14	Rakelmesserhalter mit selbsttaetigem rakeldruckausgleich
DE4010957A1 (de)	1991-10-10	Waschvorrichtung fuer den gummituchzylinder einer offset-druckmaschine
DE3221834A1 (de)	1982-12-23	Schienenzange
DE4213670A1 (de)	1993-10-28	Einrichtung zum Festklemmen und Anstellen eines Rakelbalkens an eine farbabgebende Walze einer Rollenrotationsdruckmaschine
DE19949346A1 (de)	2001-04-19	Einrichtung zur Abdichtung eines farbführenden Reservoirs an Druckmaschinen
DE3637460A1 (de)	1987-07-02	Druckplattenbefeuchtungsvorrichtung