EP0508218B1 - Guiding means for sheets in transfer cylinders for sheet printing presses - Google Patents
Guiding means for sheets in transfer cylinders for sheet printing presses Download PDFInfo
- Publication number
- EP0508218B1 EP0508218B1 EP92105105A EP92105105A EP0508218B1 EP 0508218 B1 EP0508218 B1 EP 0508218B1 EP 92105105 A EP92105105 A EP 92105105A EP 92105105 A EP92105105 A EP 92105105A EP 0508218 B1 EP0508218 B1 EP 0508218B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- bevel gear
- drum
- sheets
- segments
- 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.)
- Revoked
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/08—Combinations of endless conveyors and grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F22/00—Means preventing smudging of machine parts or printed articles
Definitions
- the invention relates to a sheet guide on sheet guide drums of sheet printing machines according to the preamble of the first claim.
- the known ring segments can only absorb axial forces in one direction, which is why they are arranged in mirror image at both ends of the drum for counter support. Radial forces cannot be absorbed, so they are not suitable for carrying the bow.
- known sheet guiding means must also be attached, for example with a sawtooth-like outer boundary, so that the sheets each have only point contact with the drum or drum shell.
- the sheet metal shells are provided with a large number of bores, not shown, which ensure an outflow of the air flow generated by the rotating movement of the drum. Due to the well-known ring segments, the arch is guided on its transport path in a shaft that prevents lateral evasion.
- the additional sheet guiding means provided between the L-shaped ring segments may have a maximum support width which depends on the thickness and the rigidity of the sheet material. However, it is not possible to do without the additional sheet guiding means between the ring segments. If such sheet guiding means are used, then pressure-free corridors must be available for lubrication-free sheet conveyance. There is a risk of smearing with all-over prints.
- the advantage of the invention is that axial and radial forces can be absorbed by the bevel gear segments, so that rigid arch material up to a certain width, e.g. rigid cardboard or sheet metal material can be greased around the edge of a sheet guide drum without scratching and without scratching the printed image and without damaging the sheet, because additional means for preventing lubrication of any kind are missing between the outer bevel gear segments.
- rigid arch material up to a certain width, e.g. rigid cardboard or sheet metal material can be greased around the edge of a sheet guide drum without scratching and without scratching the printed image and without damaging the sheet, because additional means for preventing lubrication of any kind are missing between the outer bevel gear segments.
- the printing unit 1 of a sheet offset rotary printing press shown in FIG. 1 is constructed and comprises in a conventional manner two plate / rubber cylinder pairs 2, 3 and 4, 5.
- the printed sheet 12 is transferred via a take-up drum 7 to a transport chain 8 which conveys the sheet 12 either to a further printing unit, not shown, or to a sheet delivery.
- Gripper carriages 9 with corresponding known gripper systems usually grip the sheet 12 at its front edge and take it over from the impression cylinder 6. After the sheets 12 have been transferred to the gripper carriages 9, they are guided around the take-up drum 7 and transported further in a sloping sheet guiding area. The back of the sheet 12 is guided by curved guide elements 10 and by blow boxes 11.
- Sheets 12 guided around the take-up drum 7 tend to smear on a lateral surface or on supporting elements. According to the invention, therefore, such sheet guiding elements are missing from the take-up drum 7.
- the gripper carriages 9 run in a known manner into recesses 17, which are provided comparable to a drum channel.
- the bevel gear segments 13, 14 are attached to the drum shaft 16, for example, by means of clamping screws 15.
- the two bevel gear segments 13, 14 are set in the axial direction on the side edges of rigid sheet 12 of a certain width so that they are conveyed by the printing machine without smearing.
- the bevel gear segments 13, 14 force the side edges of the rigid bends 12 into a radial position, which is characterized by mutually aligned heights. Since axial forces can only be absorbed in one direction, the mirror image arrangement of the Bevel gear segments 13, 14 thus for counter-support of the arch 12 and at the same time for radial support at a set height.
- the aligned heights of the bevel gear segments 13, 14 may have a maximum support width for guiding and carrying in the axial direction, which depends on the thickness and rigidity of the sheet material and is at least so large that the sheet 12 does not sag in the middle part of its width.
- the drawing does not show, but it is of course possible to provide known additional mechanical, pneumatic or other (eg super-blue) sheet guiding means on the drum shaft 16 between the bevel gear segments 13, 14, but with the disadvantage that the risk of lubrication increases again , whereby the arch 12 can optionally also be brought into a curved stable shape with a medium support, which stabilizes the support of the side edges on the bevel gear segments 13, 14.
- known additional mechanical, pneumatic or other (eg super-blue) sheet guiding means on the drum shaft 16 between the bevel gear segments 13, 14, but with the disadvantage that the risk of lubrication increases again , whereby the arch 12 can optionally also be brought into a curved stable shape with a medium support, which stabilizes the support of the side edges on the bevel gear segments 13, 14.
Landscapes
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
Description
Die Erfindung betrifft eine Bogenführung an Bogenführungstrommeln von Bogendruckmaschinen nach dem Oberbegriff des 1. Patentanspruches.The invention relates to a sheet guide on sheet guide drums of sheet printing machines according to the preamble of the first claim.
Aus der DE-OS 24 09 220 ist es bereits bekannt, Bogen von einem Druckwerk zum nächsten an der Seitenkante mittels im Querschnitt L-förmigen Ringsegmenten zu führen, die in etwas größerem Abstand als der jeweiligen Bogenbreite entsprechend lose und axial verschiebbar auf der Trommel angeordnet sind.From DE-OS 24 09 220 it is already known to guide sheets from one printing unit to the next on the side edge by means of ring segments with an L-shaped cross section, which are arranged at a somewhat greater distance than the respective sheet width in a correspondingly loose and axially displaceable manner on the drum are.
Die bekannten Ringsegmente können axiale Kräfte nur in einer Richtung aufnehmen, deshalb sind sie spiegelbildlich an den beiden Enden der Trommel zur Gegenabstützung angeordnet. Radiale Kräfte können nicht aufgenommen werden, so daß sie zum Tragen des Bogens nicht geeignet sind. Hierzu müssen zusätzlich an sich bekannte Bogenführungsmittel, z.B. mit sägezahnartiger äußerer Begrenzung angebracht werden, so daß die Bogen jeweils nur punktförmig Berührung mit der Trommel bzw. dem Trommelmantel aufweisen. Um eine geordnete Luftströmung im Bereich der Trommel zu ermöglichen, sind deren Blechmäntel mit einer Vielzahl nicht dargestellter Bohrungen versehen, die ein Abströmen des durch die rotierende Bewegung der Trommel erzeugten Luftstromes sicherstellen. Durch die bekannten Ringsegmente wird der Bogen gewissermaßen auf seinem Transportweg in einem Schacht geführt, der ein seitliches Ausweichen verhindert. Die zwischen den L-förmigen Ringsegmenten vorgesehenen zusätzlichen Bogenführungsmitteln dürfen eine maximale Stützbreite aufweisen, die von der Dicke und der Steifigkeit des Bogenmaterials abhängen. Jedoch ist es nicht möglich, auf die zusätzlichen Bogenführungsmittel zwischen den Ringsegmenten zu verzichten. Werden solche Bogenführungsmittel verwendet, so müssen zur abschmierfreien Bogenförderung druckfreie Korridore vorhanden sein. Bei ganzflächigen Drucken besteht Abschmiergefahr.The known ring segments can only absorb axial forces in one direction, which is why they are arranged in mirror image at both ends of the drum for counter support. Radial forces cannot be absorbed, so they are not suitable for carrying the bow. For this purpose, known sheet guiding means must also be attached, for example with a sawtooth-like outer boundary, so that the sheets each have only point contact with the drum or drum shell. In order to enable an orderly air flow in the area of the drum, the sheet metal shells are provided with a large number of bores, not shown, which ensure an outflow of the air flow generated by the rotating movement of the drum. Due to the well-known ring segments, the arch is guided on its transport path in a shaft that prevents lateral evasion. The additional sheet guiding means provided between the L-shaped ring segments may have a maximum support width which depends on the thickness and the rigidity of the sheet material. However, it is not possible to do without the additional sheet guiding means between the ring segments. If such sheet guiding means are used, then pressure-free corridors must be available for lubrication-free sheet conveyance. There is a risk of smearing with all-over prints.
Es ist Aufgabe der Erfindung, eine Bogenführung an Bogenführungstrommeln von Bogendruckmaschinen für biegesteife Materialien zu schaffen, mit der Bogen auch ohne zusätzliche Bogenführungsmittel zwischen seitlichen Segmenten durch die Bogendruckmaschine gefördert werden können.It is an object of the invention to provide a sheet guide on sheet guide drums of sheet-fed printing machines for rigid materials, with which sheets can be conveyed through the sheet-fed press even without additional sheet guiding means between lateral segments.
Gelöst wird diese Aufgabe durch die im Kennzeichen des 1. Patentanspruchs aufgeführten kennzeichnenden Merkmale.This object is achieved by the characteristic features listed in the characterizing part of
Der Vorteil der Erfindung besteht darin, das axiale und radiale Kräfte von den Kegelradsegmenten aufgenommen werden können, so daß biegesteifes Bogenmaterial bis zu einer bestimmten Breite, z.B. biegesteifer Karton- oder Blechmaterial abschmierfrei an der Seitenkante um eine Bogenführungstrommel geführt werden kann und zwar ohne Zerkratzen des Druckbildes sowie ohne Beschädigung des Bogens, weil zwischen den äußeren Kegelradsegmenten zusätzliche Mittel zum Verhindern des Abschmierens gleich welcher Art fehlen.The advantage of the invention is that axial and radial forces can be absorbed by the bevel gear segments, so that rigid arch material up to a certain width, e.g. rigid cardboard or sheet metal material can be greased around the edge of a sheet guide drum without scratching and without scratching the printed image and without damaging the sheet, because additional means for preventing lubrication of any kind are missing between the outer bevel gear segments.
Nachfolgend wird die Erfindung anhand eines Ausführungsbeispieles beschrieben, wobei Bezug auf die Zeichnungen genommen wird.The invention is described below using an exemplary embodiment, reference being made to the drawings.
In den Zeichnungen zeigt
Figur 1- eine Bogen-Offset-Rotationsdruckmaschine mit einem um eine Auslegertrommel geführten Kettensystem, wobei die Auslegertrommel erfindungsgemäß Kegelradsegmente auf der Trommelachse aufweist,
- Figur 2
- ein Kegelradsegment in Seitenansicht,
- Figur 3
- die Kegelradsegmente an der Bogenführungstrommel in Draufsicht.
- Figure 1
- a sheet-fed offset rotary printing press with a chain system guided around a delivery drum, the delivery drum according to the invention having bevel gear segments on the drum axis,
- Figure 2
- a bevel gear segment in side view,
- Figure 3
- the bevel gear segments on the sheet guide drum in plan view.
Das in Figur 1 gezeigte Druckwerk 1 einer Bogen-Offset-Rotationsdruckmaschine ist in herkömmlicher Weise aufgebaut und umfaßt zwei Platten-/Gummizylinderpaare 2, 3 bzw. 4, 5. Ein im Druckwerk 1 zugeführter Bogen 12, der z.B. von einem Bogenanleger oder einem vorgeschalteten Druckwerk kommen kann, wird um einen Druckzylinder 6 geführt, wobei der Bogen 12 mit einem Zweifarbendruck versehen wird. Danach wird der bedruckte Bogen 12 über eine Abnahmetrommel 7 an eine Transportkette 8 übergeben, welche den Bogen 12 entweder an ein weiteres nicht dargestelltes Druckwerk oder einen Bogenausleger fördert. Greiferwagen 9 mit entsprechenden bekannten Greifersystemen erfassen in üblicherweise den Bogen 12 an seiner Vorderkante und übernehmen ihn vom Druckzylinder 6. Nach der Übergabe der Bogen 12 an die Greiferwagen 9 werden diese um die Abnahmetrommel 7 herumgeführt und in einem abfallenden Bogenführungsbereich weiter transportiert. Dabei wird die Rückseite des Bogens 12 von gekrümmten Leitelementen 10 und von Blaskästen 11 geführt.The
Um die Abnahmetrommel 7 geführte Bogen 12 neigen dazu, auf einer Mantelfläche oder auf Stützelementen zu verschmieren. Erfindungsgemäß fehlen deshalb solche Bogenführungselemente an der Abnahmetrommel 7. Es sind lediglich axial verschiebbar und feststellbar auf der Trommelwelle 16 Kegelradsegmente 13, 14 vorgesehen, wobei zum ersten Kegelradsegment 13 ein zweites Kegelradsegment 14 spiegelbildlich angeordnet ist. Die Greiferwagen 9 laufen in bekannter Weise in Aussparungen 17 ein, die vergleichbar einem Trommelkanal vorgesehen sind.
Das Befestigen der Kegelradsegmente 13, 14 auf der Trommelwelle 16 erfolgt beispielsweise durch Klemmschrauben 15.The
Die beiden Kegelradsegmente 13, 14 werden in axialer Richtung so auf die Seitenkanten biegesteifer Bogen 12 bestimmter Breite eingestellt, das diese abschmierfrei durch die Druckmaschine gefördert werden.The two
Die Kegelradsegmente 13, 14 zwingen die Seitenkanten der biegesteifen Bogen 12 in eine radiale Lage, die durch zueinander fluchtende Höhen gekennzeichnet ist. Da axiale Kräfte nur in einer Richtung aufgenommen werden können, dient die spiegelbildliche Anordnung der Kegelradsegmente 13, 14 somit zur Gegenabstützung des Bogens 12 und zugleich zum radialen Tragen auf einer eingestellten Höhe. Die fluchtenden Höhen der Kegelradsegmente 13, 14 dürfen in axialer Richtung eine maximale Stützbreite zum Führen und Tragen aufweisen, die von der Dicke und der Steifigkeit des Bogenmaterials abhängt und mindestens so groß ist, daß der Bogen 12 im mittleren Teil seiner Breite nicht durchhängt.The
In der Zeichnung ist nicht dargestellt, aber es ist selbstverständlich möglich, bekannte zusätzliche mechanische, pneumatische oder sonstige (z.B. Super-blue) Bogenführungsmittel auf der Trommelwelle 16 zwischen den Kegelradsegmenten 13, 14 vorzusehen, allerdings mit dem Nachteil, daß die Abschmiergefahr sich wieder erhöht, wobei der Bogen 12 dadurch bei mittlerer Abstützung gegebenenfalls auch in eine gewölbte stabile Form gebracht werden kann, welche die Abstützung der Seitenkanten auf den Kegelradsegmenten 13, 14 stabilisiert.The drawing does not show, but it is of course possible to provide known additional mechanical, pneumatic or other (eg super-blue) sheet guiding means on the
- 11
- DruckwerkPrinting unit
- 22nd
- PlattenzylinderPlate cylinder
- 33rd
- GummizylinderRubber cylinder
- 44th
- PlattenzylinderPlate cylinder
- 55
- GummizylinderRubber cylinder
- 66
- DruckzylinderImpression cylinder
- 77
- AbnahmetrommelAcceptance drum
- 88th
- TransportketteTransport chain
- 99
- GreiferwagenGrab car
- 1010th
- gekrümmtes Bogenleitelementcurved sheet guiding element
- 1111
- BlaskastenBlow box
- 1212th
- bedruckter Bogenprinted sheet
- 1313
- KegelradsegmentBevel gear segment
- 1414
- KegelradsegmentBevel gear segment
- 1515
- KlemmschraubeClamping screw
- 1616
- TrommelwelleDrum shaft
- 1717th
- AussparungRecess
Claims (4)
- Sheet guide on sheet guiding drum (7) of sheet printing presses wherein on the sheet guiding drum (7) axially displaceable and fixable segments are provided at a somewhat greater distance than the respective width of the sheet (12) correspondingly which guide the sheets (12) at their side edges, characterised in that on one side of the drum shaft (16) of the sheet guidance drum (7) a bevel gear segment (13) is provided, relative to which is arranged a second bevel gear segment (14) in mirror image fashion on the other side of the drum shaft (16) which guide and carry stiff against bending sheets (12) of given width smear free at the side edge.
- Sheet guide according to Claim 1, characterised in that the bevel gear segments (13, 14) are axially displaceable and are provided fixable on the drum shaft (16).
- Sheet guide according to Claims 1 and 2, characterised in that the bevel gear segments (13, 14) are fixed on the drum shaft (16) by clamping screws (15).
- Sheet guide according to Claims 1 to 3, characterised in that in the centre between the bevel gear segments (13, 14) there are provided on the drum shaft (16) additional segments against smearing off.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4111262A DE4111262C1 (en) | 1991-04-08 | 1991-04-08 | |
| DE4111262 | 1991-04-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0508218A1 EP0508218A1 (en) | 1992-10-14 |
| EP0508218B1 true EP0508218B1 (en) | 1994-09-21 |
Family
ID=6429030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92105105A Revoked EP0508218B1 (en) | 1991-04-08 | 1992-03-25 | Guiding means for sheets in transfer cylinders for sheet printing presses |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0508218B1 (en) |
| JP (1) | JPH0775883B2 (en) |
| AT (1) | ATE111807T1 (en) |
| DE (2) | DE4111262C1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29918309U1 (en) * | 1999-10-16 | 1999-12-23 | Roland Man Druckmasch | Transfer drum for sheet printing machines |
| DE19950408A1 (en) * | 1999-10-20 | 2001-05-03 | Heidelberger Druckmasch Ag | Sheet guiding device for printing material sheets processing machines |
| DE10157117A1 (en) * | 2001-11-21 | 2003-05-28 | Koenig & Bauer Ag | Sheet delivery for a sheet processing machine |
| DE10222060B4 (en) * | 2002-05-17 | 2006-06-29 | Koenig & Bauer Ag | Sheet guiding drum in a printing press and sheet-fed press |
| JP4928871B2 (en) * | 2006-08-22 | 2012-05-09 | リョービ株式会社 | Transfer cylinder for sheet-fed printing press |
| DE102015204113A1 (en) | 2014-03-26 | 2015-10-01 | Koenig & Bauer Ag | Sheet transport apparatus for a sheet processing machine and method for transporting sheets from a sheet guiding cylinder to a sheet conveying system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE725705C (en) * | 1941-01-25 | 1942-09-28 | Willy Mailaender | Rotary rubber printing machine for multi-colored printing of metal sheets |
| DE2156577B2 (en) * | 1971-11-15 | 1974-07-04 | Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach | Pre-gripper swing system |
| US3791644A (en) * | 1972-12-14 | 1974-02-12 | H Demoore | Sheet handling apparatus |
| DE2409220A1 (en) * | 1974-02-27 | 1975-09-04 | Maschf Augsburg Nuernberg Ag | Multi-colour rotary printing machine - has smudge prevention control as sheets are transferred from one printing mechanism to next mechanism |
| DE2901017A1 (en) * | 1979-01-12 | 1980-07-17 | Friz Gmbh & Co Helmut | Conical roller conveyor in woodworking plant - has double line of rollers arranged to engage edges of narrow and wide boards |
| DE3307054A1 (en) * | 1983-03-01 | 1984-09-06 | Agfa-Gevaert Ag, 5090 Leverkusen | Rod-type chain conveyor in shrinkage tunnel |
| DE3443704A1 (en) * | 1984-11-30 | 1986-06-05 | Roland Man Druckmasch | DEVICE FOR GUIDING SHEETS PRINTED ON ONE OR TWO SIDES |
| DD258400A1 (en) * | 1987-03-16 | 1988-07-20 | Polygraph Leipzig | LEADING DEVICE FOR BENDING MATERIALS |
| JP2881445B2 (en) * | 1988-02-05 | 1999-04-12 | プリンティング、リサーチ、インク | Guide roller for paper and its manufacturing method |
-
1991
- 1991-04-08 DE DE4111262A patent/DE4111262C1/de not_active Expired - Lifetime
-
1992
- 1992-03-25 DE DE59200520T patent/DE59200520D1/en not_active Revoked
- 1992-03-25 AT AT92105105T patent/ATE111807T1/en not_active IP Right Cessation
- 1992-03-25 EP EP92105105A patent/EP0508218B1/en not_active Revoked
- 1992-04-06 JP JP4083862A patent/JPH0775883B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0596706A (en) | 1993-04-20 |
| ATE111807T1 (en) | 1994-10-15 |
| DE59200520D1 (en) | 1994-10-27 |
| JPH0775883B2 (en) | 1995-08-16 |
| DE4111262C1 (en) | 1992-06-25 |
| EP0508218A1 (en) | 1992-10-14 |
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