EP0796734B1 - Sheet transfer cylinder for a printing machine - Google Patents
Sheet transfer cylinder for a printing machine Download PDFInfo
- Publication number
- EP0796734B1 EP0796734B1 EP96118805A EP96118805A EP0796734B1 EP 0796734 B1 EP0796734 B1 EP 0796734B1 EP 96118805 A EP96118805 A EP 96118805A EP 96118805 A EP96118805 A EP 96118805A EP 0796734 B1 EP0796734 B1 EP 0796734B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- sheet
- sheet guiding
- cover
- interior
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
- B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
- B65H29/041—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands and introducing into a pile
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/20—Avoiding or preventing undesirable effects
- B65H2601/25—Damages to handled material
- B65H2601/251—Smearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/21—Industrial-size printers, e.g. rotary printing press
Definitions
- the invention relates to a sheet-guiding drum for a printing press for lubrication-free sheet transport according to the preamble of claim 1.
- a sheet-guiding drum of this type is known from DE 3 347 886 C2.
- the drum body has an outer surface made of a porous, air-permeable material An air cushion created on the outer surface prevents the in Direction of sheet transported, printed sheets, the air from the inside of the Drum is guided on the surface.
- a sheet-guiding drum is known from DE 4 223 839 C1, which also has through openings in its lateral surface. Blown air is generated inside the drum by a rotatably mounted coaxial to the cylinder axis Radial fan, which is arranged on the end face in the side walls of the drum Openings are connected to the ambient air. The radial fan has one its speed can be regulated independently of the sheet-guiding drum Drive.
- the object of the invention is to develop a sheet-guiding drum with little structural effort a smear-free sheet guidance of printed sheets guaranteed. This is solved by the training features of the main claim. Further training results from the subclaims.
- the sheet-guiding drum ensures smear-free transport of printed and / or lacquered sheets.
- the one from an upstream Printing machine cylinder comes with the printed side of the
- the outer surface of the sheet-guiding drum is kept away by an air cushion.
- the Drum is suitable for a take-up drum arranged in the boom, as well as Transfer drum between printing units, coating units or Processing stations or a combination thereof.
- a sheet-guiding drum 1 as a take-up drum in the boom sheet-processing printing machine arranged.
- the boom is known per se Formed by a chain conveyor system 4 rotating in the direction of sheet travel 9 the gripper systems 3 for the transport of sheets 2 to be laid out are arranged.
- the Drum 1 is in the sheet running direction 9 belonging to a coating unit Printing press cylinder 10 upstream.
- a sheet guiding device 8 arranged, which either with blowing or suction air is acted upon.
- a sheet brake unit 7 is arranged in front of a delivery stack 5, which of the speed deceleration of the sheet 2 to be deposited on the Boom stack 5 is used.
- the sheet-guiding drum 1 is a transfer drum between two Printing units arranged, a printing unit by a plate cylinder 12, a Blanket cylinder 11 and a printing press cylinder 10 is formed.
- a printing unit by a plate cylinder 12 a Blanket cylinder 11 and a printing press cylinder 10 is formed.
- Fig. 3 shows the sheet-guiding drum 1 as a removal drum with a frame mounted shaft 14.
- the fans 15 are fixed to the frame assigned, which are arranged symmetrically distributed.
- the fans 15 are with a electrical power supply coupled in terms of circuitry.
- the rotatable one Drum casing 13 is provided with openings 23 for the escape of air.
- Towards the Boom riser is in the non-leading area of the drum 1 within the Drum shell 13 to improve efficiency, a closed baffle 22nd arranged fixed to the frame.
- the drum jacket 13 has a plurality of openings 23.
- the drum jacket 13 can also be made of porous material or in combination with Openings and porous material can be formed.
- the drum 1 is designed as a removal drum.
- the shaft 14 is mounted in a frame 6 arranged on both sides.
- a connector 16 is attached to the frame 6 and carries a partition plate 17.
- the partition plate 17 extends essentially over the side surfaces of the drum 1. Facing the frame 6, the fans 15 on the partition plate 17 are fixed to the frame arranged.
- a sprocket 19 is fixed on the rotatable shaft 14 with a flange 21 adjacent to the partition plate 17.
- a chain 18 of the chain conveyor system 4 is guided over the chain wheel 19, to which the gripper systems 3 are fastened in a known manner.
- the drum jacket 13 is attached to the sprocket 19 on each side of the frame. Partition plate 17 and sprocket 19 have openings 20 so that the air generated by fans 15 is connected to the hollow interior of the drum 1.
- the training is not limited to those with rotating gripper systems 3 cooperating acceptance drum limited. Rather, the drum 1 can also be used as Transfer drum can be formed with gripper bridges fixedly arranged on the circumference.
- the drum jacket 13 supports when training as a transfer drum on the shaft 14.
- the bulkhead 17 with Fans 15 are arranged fixed to the frame analogous to the design as a take-up drum.
- a Baffle 22 is in the non-sheet leading area of the transfer drum in the upper Circle sector (Fig. 2) arranged.
- a drying function for the Arch can be achieved by means of the drum 1.
- a heating element 24 firmly arranged on the partition plate 17 in front of the sprocket 19.
- the heating element 24 is For example, as a heating wire element, which circuitry with the Machine control is coupled and can be activated if required.
- a sheet 2 is transferred from a printing press cylinder 10 to the drum 1.
- the fans 15 built up a rotating air cushion on the drum casing 13 so that the sheet is guided on the drum casing 13 without contact.
- the sheet guide devices 8 assigned to drum 1 are supplied with blowing air (with perfect and reverse printing) or with suction air (with fine printing).
- the sheet 2 is deflected by the drum 1 and, if it is designed as a take-up drum, is guided from the gripper system 3 to the delivery stack 5.
- the sheet 2 guided in the gripper closure is transferred to a printing press cylinder 10 arranged downstream in the sheet travel direction 9.
- the drum jacket 13 rotates while the partition plates 17 are fixed with fans 15. There is a small gap between the drum jacket 13 and the bulkhead 17.
- the drum casing 13 is designed as a take-up drum, it is driven by the rotating sprocket 19.
- it is designed as a transfer drum, it is driven by the machine drive and the shaft 14.
- the drying time can be shortened by switching on the heating elements 24.
- the fed to the drum 1 Air is heated and emerges from the openings 23 of the drum shell 13.
- the fans 15 are switched to blown air.
Abstract
Description
Die Erfindung betrifft eine bogenführende Trommel für eine Druckmaschine zum
abschmierfreien Bogentransport gemäß dem Oberbegriff des Anspruches 1.The invention relates to a sheet-guiding drum for a printing press for
lubrication-free sheet transport according to the preamble of
Eine bogenführende Trommel dieser Art ist aus DE 3 347 886 C2 bekannt. Der
Trommelkörper weist eine Mantelfläche aus einem porösen, luftdurchlässigen Material auf
Ein auf der Mantelfläche erzeugtes Luftpolster verhindert das Abschmieren der in
Bogenlaufrichtung transportierten, bedruckten Bogen, wobei die Luft vom Inneren der
Trommel an deren Oberfläche geführt wird.A sheet-guiding drum of this type is known from
Weiterhin ist aus der DE 4 223 839 C1 eine bogenführende Trommel bekannt, die ebenfalls
in ihrer Mantelfläche Durchgangsöffnungen aufweist. Die Erzeugung von Blasluft erfolgt
im Trommelinneren durch einen koaxial zur Zylinderachse drehbar gelagerten
Radialventilator, der stirnseitig über in den Seitenwänden der Trommel angeordnete
Öffnungen mit der Umgebungsluft in Verbindung steht. Der Radialventilator besitzt einen
von der bogenführenden Trommel unabhängigen in seiner Geschwindigkeit regelbaren
Antrieb.Furthermore, a sheet-guiding drum is known from
Nachteilig bei diesen Ausbildungen ist es, daß der bauliche Aufwand relativ hoch ist.A disadvantage of these designs is that the construction effort is relatively high.
Aufgabe der Erfindung ist es eine bogenführende Trommel zu entwickeln, die mit geringem baulichen Aufwand eine abschmierfreie Bogenführung von bedruckten Bogen gewährleistet. Gelöst wird dies durch die Ausbildungsmerkmale des Hauptanspruches. Weiterbildungen ergeben sich aus den Unteransprüchen.The object of the invention is to develop a sheet-guiding drum with little structural effort a smear-free sheet guidance of printed sheets guaranteed. This is solved by the training features of the main claim. Further training results from the subclaims.
Die bogenführende Trommel gewährleistet einen abschmierfreien Transport von bedruckten und/oder lackierten Bogen. Der dabei von einem vorgeordneten Druckmaschinenzylinder kommende Bogen wird mit der bedruckten Seite von der Mantelfläche der bogenführenden Trommel durch ein Luftpolster ferngehalten. Die Trommel eignet sich für eine im Ausleger angeordnete Abnahmetrommel, ebenso als Transfertrommel zwischen Druckeinheiten, Lackiereinheiten oder Weiterverarbeitungsstationen oder in deren Kombination.The sheet-guiding drum ensures smear-free transport of printed and / or lacquered sheets. The one from an upstream Printing machine cylinder comes with the printed side of the The outer surface of the sheet-guiding drum is kept away by an air cushion. The Drum is suitable for a take-up drum arranged in the boom, as well as Transfer drum between printing units, coating units or Processing stations or a combination thereof.
Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden.The invention will be explained in more detail using an exemplary embodiment.
Dabei zeigen:
- Fig. 1
- eine Abnahmetrommel im Ausleger,
- Fig. 2
- eine Transfertrommel zwischen Druckeinheiten,
- Fig. 3
- eine Abnahmetrommel in Seitenansicht,
- Fig. 4
- eine Abnahmetrommel in Vorderansicht (Schnitt) entgegen der Bogenlaufrichtung.
- Fig.5
- einen Aussschnitt der Trommel gem. Fig. 4.
- Fig. 1
- a take-off drum in the boom,
- Fig. 2
- a transfer drum between printing units,
- Fig. 3
- a removal drum in side view,
- Fig. 4
- a take-up drum in front view (section) against the sheet running direction.
- Fig. 5
- a section of the drum acc. Fig. 4.
Gemäß Fig. 1 ist eine bogenführende Trommel 1 als Abnahmetrommel im Ausleger einer
bogenverarbeitenden Druckmaschine angeordnet. Der Ausleger ist in an sich bekannter
Weise durch ein in Bogenlaufrichtung 9 umlaufendes Kettenfördersystem 4 gebildet, an
dem Greifersysteme 3 für den Transport auszulegender Bogen 2 angeordnet sind. Der
Trommel 1 ist in Bogenlaufrichtung 9 ein zu einer Lackiereinheit gehörender
Druckmaschinenzylinder 10 vorgeordnet. Unterhalb der Trommel 1 ist eine
Bogenleiteinrichtung 8 angeordnet, welche wahlweise mit Blas- oder Saugluft
beaufschlagbar ist. Vor einem Auslegerstapel 5 ist eine Bogenbremseinheit 7 angeordnet,
welche der Geschwindigkeitsverzögerung der abzulegenden Bogen 2 auf dem
Auslegerstapel 5 dient.1 is a sheet-guiding
Nach Fig. 2 ist die bogenführende Trommel 1 als Transfertrommel zwischen zwei
Druckeinheiten angeordnet, wobei ein Druckwerk durch einen Plattenzylinder 12, einen
Gummituchzylinder 11 und einen Druckmaschinenzylinder 10 gebildet ist. Auf weitere
bekannte Baugruppen wie Farb- und Feuchtwerke soll hier nicht weiter eingegangen
werden.2, the sheet-guiding
Fig. 3 zeigt die bogenführende Trommel 1 als Abnahmetrommel mit einer gestellfest
gelagerten Welle 14. Stirnseitig sind der Trommel 1 mehrere gestellfeste Ventilatoren 15
zugeordnet, die symmetrisch verteilt angeordnet sind. Die Ventilatoren 15 sind mit einer
elektrischen Spannungsversorgung schaltungstechnisch gekoppelt. Der rotierbar gelagerte
Trommelmantel 13 ist zum Austritt von Luft mit Öffnungen 23 versehen. In Richtung des
Auslegeraufganges ist im nichtführenden Bereich der Trommel 1 innerhalb des
Trommelmantels 13 zur Verbesserung des Wirkungsgrades ein geschlossenes Leitblech 22
gestellfest angeordnet. Der Trommelmantel 13 weist dabei eine Vielzahl Öffnungen 23 auf.
Ebenso kann der Trommelmantel 13 durch poröses Material oder in Kombination mit
Öffnungen und porösem Material gebildet sein.Fig. 3 shows the sheet-guiding
In Fig. 4 ist die Trommel 1 als Abnahmetrommel ausgebildet. In einem beidseitig
angeordneten Gestell 6 ist die Welle 14 gelagert. Am Gestell 6 ist ein Verbindungsstück 16
befestigt, welches ein Abschottblech 17 trägt. Das Abschottblech 17 erstreckt sich im
wesentlichen über die Seitenflächen der Trommel 1. Dem Gestell 6 zugewandt sind die
Ventilatoren 15 am Abschottblech 17 gestellfest
angeordnet. Dem Abschottblech 17 benachbart ist ein Kettenrad 19 auf der drehbaren
Welle 14 mit einem Flansch 21 fixiert. Über das Kettenrad 19 wird eine Kette 18 des
Kettenfördersystems 4 geführt, an der in bekannter Weise die Greifersysteme 3 befestigt
sind. Auf jeder Gestellseite ist am Kettenrad 19 der Trommelmantel 13 befestigt.
Abschottblech 17 und Kettenrad 19 weisen Durchbrüche 20 auf so daß die von
Ventilatoren 15 erzeugte Luft mit dem hohlen Innenraum der Trommel 1 in Verbindung
steht.4, the
arranged. A
Die Ausbildung ist wie oben angeführt nicht auf die mit umlaufenden Greifersystemen 3
zusammenwirkende Abnahmetrommel beschränkt. Vielmehr kann die Trommel 1 auch als
Transfertrommel mit am Umfang fest angeordneten Greiferbrücken ausgebildet sein. Der
Aufbau ist äquivalent zur Abnahmetrommel gemäß Fig. 4. Der Trommelmantel 13 stützt
sich bei der Ausbildung als Transfertrommel auf der Welle 14 ab. Das Abschottblech 17 mit
Ventilatoren 15 ist analog zur Ausbildung als Abnahmetrommel gestellfest angeordnet. Ein
Leitblech 22 ist im nichtbogenführenden Bereich der Transfertrommel im oberen
Kreissektor (Fig. 2) angeordnet.As stated above, the training is not limited to those with rotating
In einer Weiterbildung ist neben der Bogenführung eine Trocknungsfunktion für den
Bogen mittels der Trommel 1 erzielbar. Dazu ist gem. Fig. 5 , vorzugsweise jedem
Ventilator 15 ein Heizelement 24 benachbart nachgeordnet. Dabei ist das Heizelement 24
fest am Abschottblech 17 vor dem Kettenrad 19 angeordnet. Das Heizelement 24 ist
beispielsweise als Heizdrahtelement ausgeführt, welches schaltungstechnisch mit der
Maschinensteuerung gekoppelt und bei Bedarf zuschaltbar ist. In a development, in addition to the sheet guide, a drying function for the
Arch can be achieved by means of the
Die Wirkungsweise ist wie folgt:
Ein Bogen 2 wird von einem Druckmaschinenzylinder 10 an die Trommel 1 übergeben. Die
Ventilatoren 15 haben mit Inbetriebnahme der Druckmaschine ein rotierendes Luftkissen
am Trommelmantel 13 aufgebaut, so daß der Bogen berührungsfrei auf dem
Trommelmantel 13 geführt wird. Je nach Ausführung des Druckes auf dem Bogen 2 als
Schön- oder Schön- und Widerdruck werden die der Trommel 1 zugeordneten
Bogenleiteinrichtungen 8 mit Blasluft (bei Schön- und Widerdruck) oder mit Saugluft (bei
Schöndruck) beaufschlagt. Der Bogen 2 wird von der Trommel 1 umgeführt und bei
Ausbildung als Abnahmetrommel vom Greifersystem 3 zum Auslegerstapel 5 geführt. Bei
Ausbildung als Transfertrommel wird der im Greiferschluß geführte Bogen 2 an einen in
Bogenlaufrichtung 9 nachgeordneten Druckmaschinenzylinder 10 übergeben. Der
Trommelmantel 13 rotiert dabei während die Abschottbleche 17 mit Ventilatoren 15
feststehen. Zwischen Trommelmantel 13 und Abschottblech 17 ist ein kleiner Spalt. Der
Antrieb des Trommelmantels 13 erfolgt bei Ausbildung als Abnahmetrommel über das
umlaufende Kettenrad 19. Bei Ausbildung als Transfertrommel erfolgt der Antrieb über den
Maschinenantrieb und die Welle 14.The mode of action is as follows:
A sheet 2 is transferred from a
Wird beispielsweise auf den Bogen ein Lack aufgetragen, so kann die Trocknungszeit
durch Zuschaltung der Heizelemente 24 verkürzt werden. Die der Trommel 1 zugeführte
Luft wird dabei erhitzt und tritt aus den Öffnungen 23 des Trommelmantels 13 aus. Für die
Trocknungsfunktion werden die Ventilatoren 15 auf Blasluft umgeschaltet. If, for example, a varnish is applied to the sheet, the drying time can
can be shortened by switching on the
- 11
- Trommeldrum
- 22nd
- Bogenbow
- 33rd
- GreifersystemGripper system
- 44th
- KettenfördersystemChain conveyor system
- 55
- AuslegerstapelBoom stack
- 66
- Gestellframe
- 77
- BogenbremseinheitBow brake unit
- 88th
- BogenleiteinrichtungSheet guiding device
- 99
- BogenlaufrichtungDirection of sheet travel
- 1010th
- DruckmaschinenzylinderPrinting press cylinder
- 1111
- GummituchzylinderBlanket cylinder
- 1212th
- PlattenzylinderPlate cylinder
- 1313
- TrommelmantelDrum jacket
- 1414
- Wellewave
- 1515
- Ventilatorfan
- 1616
- VerbindungsstückConnector
- 1717th
- AbschottblechBulkhead
- 1818th
- KetteChain
- 1919th
- KettenradSprocket
- 2020th
- Durchbruchbreakthrough
- 2121
- Flanschflange
- 2222
- LeitblechBaffle
- 2323
- Öffnungenopenings
- 2424th
- HeizelementHeating element
Claims (5)
- Sheet guiding drum for a printing press with a drum cover provided with openings and with means for feeding blown air into the interior of the drum for generating an air cushion on the drum cover to prevent smearing of printed sheets, characterised in that arranged relative to the rotatable drum cover (13) on the end faces are baffle plates (17) feed with respect to the frame with fans (15) which are linked to a supply of electrical voltage and which can be changed over from blown air to suction, and the baffle plate (17) has apertures (20) for the entry of blown air generated by the fans (15) into the interior of the drum cover (13) or for air sucked out of the interior.
- Sheet guiding drum according to Claim 1,
characterised in that the drum (1) has as take-off drum of a delivery between baffle plate (17) and drum cover (13) a circulating sprocket (19) feed on a shaft (14) and with apertures (20), to which the drum cover (13) is fixed. - Sheet guiding drum according to Claim 1,
characterised in that the drum (1) as transfer drum has a drum cover (13) feed on the shaft (14). - Sheet guiding drum according to Claim 1,
characterised in that a closed guide plate (22) is arranged fixed with respect to the frame relative to the non-sheet guiding region of the drum cover (13) in the interior of the drum (1). - Sheet guiding drum according to Claim 1 and 2,
characterised in that a heating element (24) is arranged downstream and adjacent to the fan (15) in front of the sprocket (19).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19611590 | 1996-03-23 | ||
DE19611590A DE19611590C1 (en) | 1995-12-15 | 1996-03-23 | Sheet guiding drum for a printing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0796734A1 EP0796734A1 (en) | 1997-09-24 |
EP0796734B1 true EP0796734B1 (en) | 1999-05-26 |
Family
ID=7789246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96118805A Expired - Lifetime EP0796734B1 (en) | 1996-03-23 | 1996-11-23 | Sheet transfer cylinder for a printing machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0796734B1 (en) |
AT (1) | ATE180438T1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3347886A1 (en) * | 1983-08-06 | 1985-05-30 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Smear-free transfer drum for sheet-fed rotary printing machines |
DE4223839C1 (en) | 1992-07-20 | 1993-12-23 | Heidelberger Druckmasch Ag | Sheet guiding cylinder of a printing machine |
DE4434778C1 (en) * | 1994-09-29 | 1995-11-30 | Roland Man Druckmasch | Sheet guide between guide cylinder and drum in rotary printing press |
-
1996
- 1996-11-23 AT AT96118805T patent/ATE180438T1/en not_active IP Right Cessation
- 1996-11-23 EP EP96118805A patent/EP0796734B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0796734A1 (en) | 1997-09-24 |
ATE180438T1 (en) | 1999-06-15 |
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