EP0943433B1 - Druckwerk für eine Druckmaschine, insbesondere Offset-Rotationsmaschine - Google Patents
Druckwerk für eine Druckmaschine, insbesondere Offset-Rotationsmaschine Download PDFInfo
- Publication number
- EP0943433B1 EP0943433B1 EP98810217A EP98810217A EP0943433B1 EP 0943433 B1 EP0943433 B1 EP 0943433B1 EP 98810217 A EP98810217 A EP 98810217A EP 98810217 A EP98810217 A EP 98810217A EP 0943433 B1 EP0943433 B1 EP 0943433B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- blanket cylinder
- rubber
- blanket
- printing unit
- 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
Links
Images
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
- B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
- B41F13/21—Bearer rings
Definitions
- the invention relates to a printing unit for a printing press, in particular an offset rotary machine, with at least a plate cylinder or a first plate cylinder, a rubber cylinder or a first rubber cylinder and an impression cylinder or another rubber cylinder and one another plate cylinder, the rubber cylinder or the first rubber cylinder on his has a conical bearer ring on both ends, the one under pressure on a conical bearer ring End faces of the impression cylinder or the other rubber cylinder expires.
- a printing unit of this type has become known from EP-A-0 531 880.
- the elements involved in the printing process such as gears, bearings and cylinders, must be manufactured and assembled with very high precision, since otherwise printing defects in the form of stripes, dot widening or duplication phenomena occur.
- Such a lack of pressure is also the so-called channel strip, which appears more and more with increasing machine speed.
- both end faces of the plate and blanket cylinders To mount bearers. These are hardened and cylindrical ground steel rings that press against each other expire. They stiffen the printing unit by play and Largely cancel out the elasticity of the cylinder bearings, because roll the cylinders on the bearer rings under pre-tension. The bearers prevent that in the cylinder channels, where the compressive stress breaks down briefly without bearer rings, the cylinders reduce their distance and then the Slightly separate print insert again.
- the use of the bearer rings mentioned has the disadvantage that that the distances between the interacting cylinders are not are adjustable.
- the printing tension i.e. the distance between the rubber and the impression cylinder be adjustable to adapt to different Allow paper thicknesses or paper surfaces.
- the elevator strength on the rubber cylinder be changed, which in turn changes the compressive stress changed between rubber and plate cylinder.
- the compressive stress should be constant. So that should also Lift strength of the plate can be changed. This in turn changed the print length, which is not permitted in many cases is.
- the mentioned printing units only Bearings between plate and blanket cylinders used.
- the bearer rings on the plate and blanket cylinders make the Channel blow between these two cylinders largely eliminated, but not the channel blow between the rubber cylinder and Impression cylinder or a second rubber cylinder.
- US-A-3,732,813 mediates a printing unit of an offset printing machine with a plate cylinder, a rubber cylinder and an impression cylinder.
- Rubber cylinder and impression cylinder have conical bearer rings on the end faces, which run in pairs on each other and opposite cone angles exhibit.
- EP-A-0 295 449 discloses an apparatus for machining, especially for printing or punching a web of material between two counter-rotating drivable work rolls, with the ends arranged in pairs rolling on top of each other conical bearer rings, the bearer ring pairs between Plate cylinder and blanket cylinder of a printing unit one form the same conical rolling line.
- the invention has for its object a printing unit to create the type mentioned without sacrificing the benefits of the bearer rings infinitely adjustable center distances for rubber and impression cylinder or for rubber-rubber cylinders in rubber-rubber printing units.
- the object is achieved in a generic printing unit in that for changing the distance between the impression cylinder or the further rubber cylinder and rubber cylinder or the first rubber cylinder, the cones of the bearer rings on the rubber cylinder or the first rubber cylinder have the same direction and the same cone angle and the cones of Bearings of the impression cylinder or further blanket cylinder have the opposite direction and the same cone angle as the bearer rings of the blanket cylinder or the first blanket cylinder.
- the center distance between the rubber and the impression cylinder or between the two gum cylinders can be adjusted continuously, for example, by moving the impression cylinder in its axial direction by means of a spindle. The axis distance between the plate and the rubber cylinder does not change.
- the printing unit 30 shown in FIG. 1 has a conventional one Plate cylinder 1 on the side plates 4 and 5 is stored.
- the storage not shown here is here trained as usual.
- the plate cylinder 1 is cylindrical Bearings 6 and 7 provided on cylindrical Unroll bearer rings 8 and 9 of a rubber cylinder.
- To attach the pressure plates not shown here the plate cylinder 1 is a known clamping device 19 on.
- the plates are attached to this at bent edges.
- the rubber cylinder 2 also has a clamping device 20 with which the rubber blanket, not shown here is spanned. On the two jigs 19 and 20 there is a gap between the clamping edges for example 8 mm, which is the case with printing units according to the prior art Technology can cause the above-mentioned channel blow.
- the rubber cylinder 2 has additional on both sides conical bearer rings 10 and 11 on conical Unroll bearer rings 12 and 13 of an impression cylinder 3.
- cones 26 and 27 of the bearer rings 10 and 11 on the blanket cylinder 2 in the same direction and same cone angle.
- Cones 28 and 29 of the bearer rings 12 and 13 have the opposite direction and the same cone angle like the cones 26 and 27 of the bearer rings 10 and 11.
- the shaft ends 22 of the rubber cylinder are by springs 41 loaded and thereby roll the bearer rings 8, 9 of the blanket cylinder 2 on the bearer rings 6, 7 of the plate cylinder 1 under pressure.
- the bearer rings 10, 11 of the blanket cylinder 2 on the bearer rings 12, 13 of the impression cylinder Third
- a spindle 14 is arranged, with which the impression cylinder 3 is displaceable in its axial direction is. With such a shift, the center distance changes A between rubber 2 and impression cylinder 3, while the center distance B between the plate 1 and the rubber cylinder 2 remains unchanged.
- a further spindle 15 is also attached to the side plate 4, with which the plate cylinder 1 axially displaceable is, for example, the print image on the substrate adjust laterally. Change at such a shift however, the center distances A and B of cylinders 1, 2 and 3 Not.
- FIG. 3 shows a printing unit 40 according to the invention, at which a plate cylinder 31 conical bearer rings 35 and 37 which also on conical bearer rings 36 and 38 roll of a rubber cylinder 32.
- the bearer rings of the rubber cylinder 32 in turn roll on bearer rings 12 and 13 of the impression cylinder 33.
- the provided at the printing unit 30 cylindrical bearer rings 8 and 9 are in this embodiment not mandatory.
- the impression cylinder 33 can also be changed here by means of a spindle 14 Center distance between the cylinders 32 and 33 in the axial direction be moved.
- a spindle 34 which on a fixed frame part 39 is supported here three cylinders 31, 32, and 33 axially by the same amount can be moved to adjust the print image laterally. The center distances are not changed here.
- the cylinders 1 to 3 or 31 to 33 with gears 16, 17 and 18 driven In the printing unit 30 as well as in the printing unit 40, the cylinders 1 to 3 or 31 to 33 with gears 16, 17 and 18 driven.
- the gears 17 and 18, which the of the center distance adjustable cylinders 2 and 3 or 32 and 33 drive must be set for the smallest center distance so as not to jam. If the center distance is increased, so you get a backlash that is undesirable, because it creates printing problems. This play of teeth can by per se known and not shown idler gears To get picked up.
- the tooth play mentioned can, however, be skilful Make the selection of the bearer ring diameter ineffective.
- the Rolling diameter of the bearer rings on the driving cylinder for example, the cylinder 3 or 33 smaller than that Rolling diameter of the bearer rings on the driven cylinder,
- the driven one Cylinder according to the ratio of the above Turn the rolling diameter more slowly than the driving cylinder.
- the cylinders are forced at the same speed to run.
- a relative movement occurs in the circumferential direction. Since these bearer rings 2 and 3 or 32 and 33 rolling under pressure on each other arises between them a frictional force that makes an existing backlash ineffective and eliminates the need for complex idler gears.
- the printing unit according to the invention can also have four working cylinders in the order: plate, rubber, rubber and plate cylinders exhibit.
- the two are Rubber cylinders on their faces with conical bearer rings provided and can be steplessly spaced axially from each other can be set.
- the printing unit 30 would then be the Impression cylinder 3 by another blanket cylinder and replaced another plate cylinder.
- This other rubber cylinder and the rubber cylinder 2 would then each be conical Bearings provided and can be spaced apart can be adjusted continuously.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Presses (AREA)
Description
Ein solcher Druckmangel ist auch der sogenannte Kanalstreifen, der mit zunehmender Maschinengeschwindigkeit immer stärker in Erscheinung tritt.
Es ist auch bekannt, dass zur Vermeidung des Kanalschlages Gummitücher in Hülsenform verwendet werden. Das Wechseln dieser Hülsen ist jedoch sehr aufwendig, da beispielsweise auf einer Seite die Seitenwand und/oder die jeweilige Zylinderlagerung entfernt werden muss, um diese Hülsen zu wechseln.
Beim erfindungsgemässen Druckwerk lässt sich der Achsabstand zwischen dem Gummi- und dem Gegendruckzylinder bzw. zwischen den beiden Gumnizylindern dadurch stufenlos einstellen, indem beispielsweise mittels einer Spindel der Gegendruckzylinder in seiner Achsrichtung verschoben wird. Der Achsabstand zwischen dem Platten- und dem Gummizylinder verändert sich dadurch nicht.
- Fig. 1
- schematisch eine Ansicht eines erfindungsgemässen Druckwerkes,
- Fig. 2
- schematisch einen Schnitt durch das Druckwerk nach Figur 1, und
- Fig. 3
- schematisch eine Ansicht eines Druckwerkes nach einer Variante.
Claims (3)
- Druckwerk (30, 40) für eine Druckmaschine, insbesondere eine Offset-Rotationsmaschine, mit wenigstens einem Plattenzylinder (1, 31) bzw. einem ersten Plattenzylinder, einem Gummizylinder (2, 32) bzw. einem ersten Gummizylinder und einem Gegendruckzylinder(3, 33) bzw. einem weiteren Gummizylinder und einem weiteren Plattenzylinder, wobei der Gummizylinder (2, 32) bzw. der erste Gummizylinder an seinen beiden Stirnseiten jeweils einen konischen Schmitzring (10, 11, 36, 38) aufweist, der unter Druck auf einem konischen Schmitzring (12, 13) an den Stirnseiten des Gegendruckzylinders (3, 33) bzw. des weiteren Gummizylinders abläuft, dadurch gekennzeichnet, dass zur Abstandsänderung zwischen Gegendruckzylinder (3, 33) bzw. dem weiteren Gummizylinder und Gummizylinder (2, 32) bzw. dem ersten Gummizylinder die Konen (26, 27) der Schmitzringe (10, 11, 36, 38) auf dem Gummizylinder (2, 32) bzw. dem ersten Gummizylinder die gleiche Richtung und den gleichen Kegelwinkel und die Konen (28, 29) der Schmitzringe (12, 13) des Gegendruckzylinders (3, 33) bzw. des weiteren Gummizylinders die entgegengesetzte Richtung und den gleichen Kegelwinkel wie die Schmitzringe (10, 11, 36, 38) des Gummizylinders (2, 32) bzw. des ersten Gummizylinders aufweisen.
- Druckwerk nach Anspruch 1, dadurch gekennzeichnet, dass der Gegendruckzylinder (3, 33) bzw. der weitere Gummizylinder zum Ändern des Abstandes (A) dieses Zylinders zum Gummizylinder (2, 32) bzw. zum ersten Gummizylinder mittels einer Spindel (14) in Achsrichtung verschiebbar ist.
- Druckwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Gummizylinder (2) an seinen Stirnseiten jeweils einen zylindrischen (8, 9) und-einen konischen (10, 11) Schmitzring aufweist.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59804990T DE59804990D1 (de) | 1998-03-16 | 1998-03-16 | Druckwerk für eine Druckmaschine, insbesondere Offset-Rotationsmaschine |
EP98810217A EP0943433B1 (de) | 1998-03-16 | 1998-03-16 | Druckwerk für eine Druckmaschine, insbesondere Offset-Rotationsmaschine |
JP11067152A JP2000033686A (ja) | 1998-03-16 | 1999-03-12 | 印刷機、特にオフセット輪転機用の印刷装置 |
US09/268,689 US6314881B1 (en) | 1998-03-16 | 1999-03-16 | Printing group for a printing press |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98810217A EP0943433B1 (de) | 1998-03-16 | 1998-03-16 | Druckwerk für eine Druckmaschine, insbesondere Offset-Rotationsmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0943433A1 EP0943433A1 (de) | 1999-09-22 |
EP0943433B1 true EP0943433B1 (de) | 2002-07-31 |
Family
ID=8235985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810217A Expired - Lifetime EP0943433B1 (de) | 1998-03-16 | 1998-03-16 | Druckwerk für eine Druckmaschine, insbesondere Offset-Rotationsmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US6314881B1 (de) |
EP (1) | EP0943433B1 (de) |
JP (1) | JP2000033686A (de) |
DE (1) | DE59804990D1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2827544B1 (fr) * | 2001-07-23 | 2003-10-17 | Goss Systemes Graphiques Nante | Presse offset a montage de cylindre ameliore |
US6997108B2 (en) * | 2001-08-21 | 2006-02-14 | Mitsubishi Heavy Industries, Ltd. | Plate-making type printing press, multi-color printing press and plate-making type printing method |
ATE365106T1 (de) * | 2002-08-19 | 2007-07-15 | Bobst Sa | Rotationspresse zum anbringen von bildern auf einem substrat |
DE10327490B4 (de) * | 2003-06-17 | 2006-09-21 | Koenig & Bauer Ag | Druckeinheit einer Rotationsdruckmaschine |
DE102006062282A1 (de) * | 2006-12-22 | 2008-07-03 | Kba-Metronic Ag | Verschleißarme Schmitzringe |
DE102008041776A1 (de) * | 2008-09-03 | 2010-03-04 | Manroland Ag | Schmitzring, insbesondere für Zylinder in einer Rotationsdruckmaschine |
JP2010211105A (ja) | 2009-03-12 | 2010-09-24 | Seiko Epson Corp | 画像形成装置及び画像形成方法 |
ATE522354T1 (de) * | 2009-04-15 | 2011-09-15 | Mueller Martini Holding Ag | Vorrichtung zum bearbeiten einer materialbahn zwischen zwei gegenläufig antreibbaren arbeitswalzen |
DE102010001747B4 (de) | 2010-02-10 | 2011-11-17 | Koenig & Bauer Aktiengesellschaft | Schmitzring sowie ein Verfahren zum reversiblen Verändern eines Außenradius eines Schmitzrings |
US9248639B2 (en) * | 2011-06-03 | 2016-02-02 | Hewlett-Packard Development Company, L.P. | Imaging device having fluid container and method for collecting carrier fluid |
EP2966016B1 (de) * | 2013-03-06 | 2020-01-22 | FUJIFILM Corporation | Aufzeichnungsmedientransportvorrichtung und tintenstrahlaufzeichnungsvorrichtung |
DE102016215761B4 (de) | 2016-08-23 | 2024-01-11 | Koenig & Bauer Ag | Zylinder für eine Bogen verarbeitende Maschine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2503858A (en) * | 1944-08-21 | 1950-04-11 | Robert J Waterworth | Folding machine roll adjusting means |
US3732813A (en) * | 1972-01-03 | 1973-05-15 | Rockwell International Corp | Bearer arrangement for printing press |
CH673623A5 (de) * | 1987-06-19 | 1990-03-30 | Grapha Holding Ag | |
DE4129840A1 (de) | 1991-09-09 | 1992-04-09 | Koenig & Bauer Ag | Verfahren und anordnung zum einstellen von exzenterbuchsen fuer zylinder von druckmaschinen |
DE19501243C5 (de) * | 1995-01-17 | 2004-01-29 | Maschinenfabrik Wifag | Schmitzringlagerung für einen Zylinder einer Rotationsdruckmaschine |
DE19540573C1 (de) * | 1995-10-31 | 1996-11-07 | Roland Man Druckmasch | Vorrichtung zum Spielausgleich in Rotationsdruckmaschinen |
FR2756214B1 (fr) * | 1996-11-28 | 1999-02-12 | Heidelberg Harris Sa | Dispositif de deplacement de cylindres d'un groupe d'impression recto-verso d'une machine rotative a imprimer |
-
1998
- 1998-03-16 DE DE59804990T patent/DE59804990D1/de not_active Expired - Fee Related
- 1998-03-16 EP EP98810217A patent/EP0943433B1/de not_active Expired - Lifetime
-
1999
- 1999-03-12 JP JP11067152A patent/JP2000033686A/ja active Pending
- 1999-03-16 US US09/268,689 patent/US6314881B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6314881B1 (en) | 2001-11-13 |
EP0943433A1 (de) | 1999-09-22 |
JP2000033686A (ja) | 2000-02-02 |
DE59804990D1 (de) | 2002-09-05 |
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