EP1124689B1 - Bogenleiteinrichtung in einer druckmaschine - Google Patents
Bogenleiteinrichtung in einer druckmaschine Download PDFInfo
- Publication number
- EP1124689B1 EP1124689B1 EP99971374A EP99971374A EP1124689B1 EP 1124689 B1 EP1124689 B1 EP 1124689B1 EP 99971374 A EP99971374 A EP 99971374A EP 99971374 A EP99971374 A EP 99971374A EP 1124689 B1 EP1124689 B1 EP 1124689B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- flow channel
- pneumatic system
- sheet
- sheet guiding
- 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
- B41F21/10—Combinations of transfer drums and grippers
- B41F21/102—Combinations of transfer drums and grippers with pneumatic means
Definitions
- the invention relates to a sheet guiding device in a Printing machine according to the preamble of the main claim.
- a sheet guiding device of this type is known from EP 0 156 173 B1 for guiding sheet-shaped sheets printed on one or both sides Media known.
- This guide is through modularly arranged flow channels, which openings have as air nozzles in a guide surface.
- the Flow channels have a plurality of fans for the Supply of blown air or suction air.
- a blower or suction box has the guide surface as a top surface and is connected to a blower or suction air source by means of blower or suction air nozzles.
- Flow resistance-forming bodies protrude from the top surface into the blow / suction box.
- the flow resistance of the above-mentioned bodies in the blowing / suction box decreases.
- the disadvantage here is that, particularly in blown air operation, this arrangement of the flow resistance-forming bodies causes turbulence in the area of the through openings, which can lead to an unstable arc run.
- the invention has for its object a sheet guiding device to create in a printing press that named Avoids disadvantages, especially in blown air operation and safe sheet guidance is also permitted in suction air mode and noticeably reduced the occurrence of turbulence.
- the task is based on the training features of the main claim solved. Further training results from the subclaims.
- a first advantage of the invention is that the sheet-carrying printing material in blown air and suction air mode the sheet guiding device safely and evenly without greasing is feasible.
- the sheet guide device according to the invention are turbulences in the range of air flow Avoidable openings, so that in blown air mode one of these openings with a substantially uniform Pressure distribution emerging stable flowing air cushion between the guiding surface of the sheet guiding device and forms one side of the sheet-shaped printing material.
- the risk of greasing is reduced as this is preferred diffusely flowing air cushions with a substantially more uniform Pressure distribution leads the substrate.
- the sheet guide device too can be operated in suction air mode. This is an even one Sucking up the preferably unprinted side of the printing material towards the guiding surface of the sheet guiding device realizable.
- the sheet guiding device is supplied with air by a preferably switchable adjustable pneumatic system, which a central blown air or suction air supply is permitted. Alternatively, their direction of rotation can be switched, speed-adjustable fans can be used.
- the sheet guiding device is in the printing press the sheet transport systems, preferably gripper bars on the sheet guide cylinders (System drum, transfer cylinder, impression cylinder and turning system) and in the boom in a defined Distance straight or curved adjacent.
- this sheet guide is below as well above sheet-guiding cylinders and drum or rotating ones Conveyor systems can be arranged.
- Another advantage of the sheet guiding device is that justifies that a pulse current distribution by means of directional elements or pressure distribution over the sheet-guiding surface can be influenced in a targeted manner.
- This enables the each pneumatic system selectively into a flow channel introduced air in its pressure distribution within the Flow channel become more uniform, leading to a calming of the sheet run.
- an air permeable Training e.g. a perforation that will be straightening elements possible recirculation areas of the air flow are suppressed and achieved a calming of the flow in the flow channel.
- By taking into account the blowing or suction direction of the pneumatic system inclined arrangement of the straightening elements (or their subsections) are through the use air-permeable materials, such as. B. more perforated Materials, shadows of the currents in the flow channel reduced. This also leads to an even pressure distribution in the flow channel.
- the guiding surface of the sheet guiding device is air-permeable Guide surface with air to flow through Through openings formed.
- air-permeable Guide surfaces are preferably diffuse on the bottom and / or top of an arcuate printing material acting currents can be generated in the form of blown air or suction air.
- a rotary printing press in series construction has one A plurality of printing units 11 for multi-color offset printing.
- each Printing unit 11 is through a plate cylinder 1, a blanket cylinder 3 and a sheet guide cylinder, here as Designated pressure cylinder 4, formed.
- Each plate cylinder 1 an inking unit and possibly a dampening unit are assigned.
- Between the printing units 11 are one or several turning systems 13 (e.g. as a single drum or three drum application) and transfer cylinder 14 arranged.
- the last printing unit 11 (or one Coating unit) a boom 12 downstream.
- the boom 12 has an endless circulating conveyor system 16, e.g. as a chain drive with a sprocket shaft 15 on.
- the sheet guiding cylinders System drum, turning system 13, transfer cylinder 14, printing cylinder 4) and the conveyor system 16 are defined in Distances assigned sheet guide devices 7 adjacent.
- These sheet guiding devices 7 are in a modular arrangement arranged several times in a row and extend across the maximum format width of the sheet-shaped printing material 18.
- the sheet guiding devices 7 have guide surfaces 8 which are provided with openings through which air can flow.
- Each guide surface 8 forms a continuous (straight and / or curved) plane for guiding the printing material 18.
- the sheet guiding devices arranged in a modular design 7 are preferably by a plurality of guide modules 5,9 educated.
- the control module 5 preferably for an arrangement below the conveyor level of the Printing material and the control module 9 for an arrangement above the conveying level of the substrate.
- the basic structure is the same in both training courses.
- everyone Control module 5.9 each has a flow channel 17, which with the guide surface 8 and a pneumatic system 10 for each the blown air or suction air supply in functional connection is.
- the pneumatic system 10 is, for example, the central one Air supply or through a plurality of on the rear wall the flow channels 17 arranged fans can be realized.
- the Guide surface 8 is preferably connected to flow channel 17 releasably connected and forms the sheet-shaped printing material 18 assigned top surface of the flow channel 17.
- At least one straightening element is located within the flow channel 17 6 arranged associated with at least one pneumatic system 10.
- the straightening element is shown in FIG. 2 6 as extending within the flow channel 17 Perforated sheet formed, which the pneumatic system 10th is assigned adjacent.
- the perforated plate shows a constant hole pattern.
- the hole pattern is also varying, i.e. the air flow openings are in Size and distance different, can be trained.
- the straightening element 6 is as centric and / or concentric to the pneumatic system 10 formed adjacent air guide surface.
- the Air guiding surfaces of the straightening elements 6 are flat and / or curved executable. The distances are between two straightening elements 6 A1, A2 of the air guiding surfaces with each other with increasing Distance from the pneumatic system 10 is larger (A2> A1).
- the air guiding surfaces can also be surfaces with the pneumatic system Form 10 distant trailing edges.
- the air guiding surfaces of the straightening elements are also a further development 6 with openings (e.g. holes, slots, pores a porous material), which can be flowed through by air are.
- hood-shaped attachment with air-permeable openings (e.g. Holes, slots, pores) of the respective pneumatic system 10 assigned.
- the hood-shaped attachment forms a chamber within the flow channel 17, the air in the blown air mode flows out of the hood surface. In suction air mode the air above the hood surface becomes a pneumatic system 10 sucked in.
- 2 to 4 are, for example, for an arrangement of guide modules 5 for below sheet-guiding Cylinders 4, 14 or rotating conveyor systems 16 used.
- a Guide module 9 shown which above sheet-guiding Cylinders 4, 14 or rotating conveyor systems 16 can be used is.
- This is the inside of a flow channel 17 Pneumatic system 10 associated straightening element 6 as a perforated plate educated.
- the hole pattern of the perforated plate is constant or can be trained in various ways as already described.
- the extension the perforated plate is limited, however, so that of the Pneumatic system 10 most distant part of the guide surface 8 always sufficiently supplied with air, preferably with blown air is.
- the straightening elements 6 described serve in the flow channel 17 the generation of a for the respective operating mode (fine print, Perfecting) favorable, even pressure distribution (Pulse current distribution) over the entire guide surface 8.
- the punctual by the or the pneumatic systems 10 introduced into the flow channel 17 during blown air operation Air flow is specifically directed by means of straightening elements 6, to ensure safe sheet guidance. Also in suction air mode is sucked into the flow channel 17 Targeted air, resulting in a stable, calm curve causes. Disruptive recirculation currents or shading effects through the directional elements 6 are through the Arrangement and design of the straightening elements 6, in particular through air flow, e.g. perforated or porous, Avoidable openings.
- the flow introduced by the pneumatic system 10 is directed in a targeted manner in the blown air mode and distributed within the flow channel 17.
- Printing materials 18 with the printed or lacquered side facing the sheet guiding device 7 can thus be guided in a stable, lubrication-free manner.
- the suction air mode the flow extracted by the pneumatic system 10 is selectively distributed beforehand within the flow channel 17.
- the openings in the respective straightening element 6 prevent the flow at the guide surface edges from becoming detached and from forming recirculation areas which interfere with the pressure distribution.
- the penetration resistance can be varied by the type (size, distance) of the openings on the straightening element 6.
- the suction air operation can be carried out in a stable manner, in particular for printing substrates 18 with an unprinted or unpainted side facing the sheet guide device 7.
- FIGS. 3 and 4 only on the left directional elements 6 the pulse flow indicated by arrows.
- the mode of action is as follows:
- the sheet-shaped printing material 18 passes through the printing units 11, possibly coating units, in the conveying direction 2 or processing stations and is in the boom 12 placed on a stack.
- the Guide modules 5.9 of the sheet guide device 7 pneumatically acted upon.
- the sheet-shaped printing material 18 is over the format evenly on the preferably diffuse flowing Air cushion led. Be through this stable flow Vacuum zones, the fluttering of the sheet-shaped substrate 18 favor avoided.
- the sheet guide device 7 can also be operated in suction air mode.
- the Sheet guiding device 7 is not on one side Allocation from to substrate 18 (top or bottom) limited. Rather, it is also bilateral Assignment to printing material 18 possible.
- the guide surface 8 is detachable with the Flow channel 17 connected.
Description
Von der Deckfläche ragen strömungswiderstandsbildende Körper in den Blas-/ Saugkasten. Mit zunehmendem Abstand vom Mündungsbereich des Blas-/Saugstutzens nimmt der Strömungswiderstand der obengenannten Körper im Blas-/Saugkasten ab.
Von Nachteil ist hierbei, daß insbesondere im Blasluftbetrieb durch diese Anordnung der strömungswiderstandbildenden Körper Turbulenzen im Bereich der Durchgangsöffnungen auftreten, die zu einem instabilen Bogenlauf führen können.
- Fig. 1
- eine Rotationsdruckmaschine mit Bogenleiteinrichtungen,
- Fig. 2
- einen Modul der Bogenleiteinrichtung in erster Ausbildung,
- Fig. 3
- einen Modul der Bogenleiteinrichtung in zweiter Ausbildung,
- Fig. 4
- einen Modul der Bogenleiteinrichtung in dritter Ausbildung,
- Fig. 5
- einen Modul der Bogenleiteinrichtung in vierter Ausbildung.
Im Saugluftbetrieb wird die vom Pneumatiksystem 10 punktuell abgesaugte Strömung vorher innerhalb des Strömungskanals 17 gezielt verteilt. Insbesondere durch die Öffnungen im jeweiligen Richtelement 6 wird verhindert, daß die Strömung an den Leitflächenkanten sich ablöst und sich auf die Druckverteilung störende Rezirkulationsgebiete bilden. Durch die Art (Größe, Abstand) der Öffnungen am Richtelement 6 ist der Durchtrittswiderstand variierbar. Der Saugluftbetrieb ist insbesondere für Bedruckstoffe 18 mit zur Bogenleiteinrichtung 7 zugewandten unbedruckten bzw. unlackierten Seite stabil führbar.
- 1
- Plattenzylinder
- 2
- Förderrichtung
- 3
- Gummituchzylinder
- 4
- Druckzylinder
- 5
- Leitmodul
- 6
- Richtelement
- 7
- Bogenleiteinrichtung
- 8
- Führungsfläche
- 9
- Leitmodul
- 10
- Pneumatiksystem
- 11
- Druckwerk
- 12
- Ausleger
- 13
- Wendesystem
- 14
- Transferzylinder
- 15
- Kettenradwelle
- 16
- Fördersystem
- 17
- Strömungskanal
- 18
- Bedruckstoff
- A1
- Abstand
- A2
- Abstand
Claims (7)
- Bogenleiteinrichtung in einer Druckmaschine mit einem Strömungskanal und einer Führungsfläche, wobei in der Führungsfläche Öffnungen angeordnet sind, die mittels eines Pneumatiksystems mit Blasluft und Saugluft beaufschlagbar sind,
dadurch gekennzeichnet, dass die Bogenleiteinrichtung (7) aus wenigstens einem Leitmodul (5, 9) gebildet ist, dass jeder Leitmodul (5, 9) je einen mit der Führungsfläche (8) und dem Pneumatiksystem (10) in Funktionsverbindung stehenden Strömungskanal (17) aufweist, und
dass wenigstens ein innerhalb des Strömungskanals (17) angeordnetes Richtelement (6) einem Pneumatiksystem (10) zugeordnet ist, derart, dass die mittels Pneumatiksystem (10) in den Strömungskanal (17) eingebrachte Luftströmung als eine gleichmäßige Druckverteilung innerhalb des Strömungskanals (17) an die Führungsfläche (8) gerichtet ist. - Bogenleiteinrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß die aus wenigstens einem Leitmodul (5,9) gebildete Bogenleiteinrichtung (7) innerhalb des Strömungskanals (17) wenigstens ein dem Pneumatiksystem (10) zugeordnetes Richtelement (6) aufweist, um im Saugluftbetrieb eine gleichmäßig in den Strömungskanal (17) abgesaugte Luftströmung punktuell dem Pneumatiksystem (10) zuzuführen. - Bogenleiteinrichtung nach wenigstens Anspruch 1,
dadurch gekennzeichnet, daß das Richtelement (6) ein Luftleitblech mit luftdurchströmbaren Öffnungen ist. - Bogenleiteinrichtung nach wenigstens Anspruch 1,
dadurch gekennzeichnet, daß das Lochbild der Öffnungen des Richtelementes (6) konstant ist oder variiert. - Bogenleiteinrichtung nach wenigstens Anspruch 1,
dadurch gekennzeichnet, daß die Richtelemente (6) zentrisch und/oder konzentrisch zum Pneumatiksystem (10) zugeordnet sind, wobei zwischen zwei Richtelementen (6) ein Abstand (A2) an einer Abströmkante zu einem Abstand (A1) am benachbarten Pneumatiksystem (10) größer ist. - Bogenleiteinrichtung nach wenigstens Anspruch 1,
dadurch gekennzeichnet, daß das Richtelement (6) haubenförmig mit luftdurchströmbaren Öffnungen dem Pneumatiksystem (10) zugeordnet ist. - Bogenleiteinrichtung nach wenigstens Anspruch 1,
dadurch gekennzeichnet, daß die Führungsfläche (8) lösbar mit dem Strömungskanal (17) verbunden ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29819402U | 1998-10-30 | ||
DE29819402U DE29819402U1 (de) | 1998-10-30 | 1998-10-30 | Bogenleiteinrichtung in einer Druckmaschine |
PCT/EP1999/007318 WO2000026031A1 (de) | 1998-10-30 | 1999-10-02 | Bogenleiteinrichtung in einer druckmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1124689A1 EP1124689A1 (de) | 2001-08-22 |
EP1124689B1 true EP1124689B1 (de) | 2002-07-24 |
Family
ID=8064644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99971374A Revoked EP1124689B1 (de) | 1998-10-30 | 1999-10-02 | Bogenleiteinrichtung in einer druckmaschine |
Country Status (8)
Country | Link |
---|---|
US (1) | US6726203B1 (de) |
EP (1) | EP1124689B1 (de) |
JP (1) | JP2002528362A (de) |
CN (1) | CN1131778C (de) |
AT (1) | ATE220995T1 (de) |
CZ (1) | CZ295070B6 (de) |
DE (2) | DE29819402U1 (de) |
WO (1) | WO2000026031A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6910416B2 (en) | 2002-12-12 | 2005-06-28 | Heidelberger Druckmaschinen Ag | Suction guidance device for a single-drum turner |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20002090U1 (de) * | 2000-02-05 | 2001-06-21 | Roland Man Druckmasch | Bogenführungseinrichtung in einer Druckmaschine |
DE10100198A1 (de) † | 2001-01-04 | 2002-07-11 | Koenig & Bauer Ag | Bogenleiteinrichtung in Druckmaschinen |
DE10233097B4 (de) * | 2002-07-20 | 2010-02-25 | Koenig & Bauer Aktiengesellschaft | Bogenführungseinrichtung in einer Druckmaschine |
DE10331626B3 (de) * | 2003-07-12 | 2005-01-13 | Nexpress Solutions Llc | Bedruckstoffführung |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3592329A (en) * | 1966-10-27 | 1971-07-13 | Gen Logistics | Differential pressure conveyors |
DE3411029A1 (de) | 1984-03-24 | 1985-10-03 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Vorrichtung zum fuehren von ein- und beidseitig bedruckten bogen |
US5133255A (en) * | 1990-12-31 | 1992-07-28 | Howard W. DeMoore | Vacuum transfer apparatus for rotary sheet-fed printing presses |
DE4106904A1 (de) | 1991-03-05 | 1992-09-10 | Koenig & Bauer Ag | Duesenanordnung fuer die bogenfuehrung in bogenrotationsdruckmaschinen |
DE4244499C2 (de) | 1992-12-30 | 1995-04-06 | Heidelberger Druckmasch Ag | Druckmaschine mit bogenführender Fläche |
US5634636A (en) * | 1996-01-11 | 1997-06-03 | Xerox Corporation | Flexible object handling system using feedback controlled air jets |
US5839722A (en) * | 1996-11-26 | 1998-11-24 | Xerox Corporation | Paper handling system having embedded control structures |
DE19701230C1 (de) * | 1997-01-16 | 1998-02-19 | Roland Man Druckmasch | Pneumatische Bogenleiteinrichtung in einer Druckmaschine |
EP0899228B1 (de) * | 1997-08-28 | 2004-04-14 | Heidelberger Druckmaschinen Aktiengesellschaft | Luftpolsterführung |
DE19829094C2 (de) * | 1998-06-30 | 2002-10-24 | Roland Man Druckmasch | Leiteinrichtung für bogenförmige Bedruckstoffe in einer Druckmaschine |
US6170819B1 (en) * | 1998-08-05 | 2001-01-09 | Baldwin Graphic Systems, Inc. | Non-contact sheet handling system and method of using same |
-
1998
- 1998-10-30 DE DE29819402U patent/DE29819402U1/de not_active Expired - Lifetime
-
1999
- 1999-10-02 CN CN998128945A patent/CN1131778C/zh not_active Expired - Fee Related
- 1999-10-02 WO PCT/EP1999/007318 patent/WO2000026031A1/de not_active Application Discontinuation
- 1999-10-02 DE DE59902146T patent/DE59902146D1/de not_active Revoked
- 1999-10-02 CZ CZ20011519A patent/CZ295070B6/cs not_active IP Right Cessation
- 1999-10-02 EP EP99971374A patent/EP1124689B1/de not_active Revoked
- 1999-10-02 US US09/830,249 patent/US6726203B1/en not_active Expired - Fee Related
- 1999-10-02 JP JP2000579447A patent/JP2002528362A/ja not_active Withdrawn
- 1999-10-02 AT AT99971374T patent/ATE220995T1/de not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6910416B2 (en) | 2002-12-12 | 2005-06-28 | Heidelberger Druckmaschinen Ag | Suction guidance device for a single-drum turner |
Also Published As
Publication number | Publication date |
---|---|
CN1325344A (zh) | 2001-12-05 |
ATE220995T1 (de) | 2002-08-15 |
US6726203B1 (en) | 2004-04-27 |
DE29819402U1 (de) | 1999-03-11 |
DE59902146D1 (de) | 2002-08-29 |
EP1124689A1 (de) | 2001-08-22 |
CZ295070B6 (cs) | 2005-05-18 |
WO2000026031A1 (de) | 2000-05-11 |
JP2002528362A (ja) | 2002-09-03 |
CN1131778C (zh) | 2003-12-24 |
CZ20011519A3 (cs) | 2001-12-12 |
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