EP0699528A2 - Cylindre de transfer de feuilles pour machine à imprimer - Google Patents

Cylindre de transfer de feuilles pour machine à imprimer Download PDF

Info

Publication number: EP0699528A2
Authority: EP; European Patent Office
Prior art keywords: drum body; sheet; guiding; gripper bridges; gripper
Prior art date: 1994-09-01
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

EP95112126A

Other languages

German (de)

English (en)

Other versions

EP0699528B1 (fr

EP0699528A3 (fr

Inventor

Harald Bayer

Klemens Kemmerer

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.)

1994-09-01

Filing date

1995-08-02

Publication date

1996-03-06

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6527148&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0699528(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1995-08-02 Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG

1996-03-06 Publication of EP0699528A2 publication Critical patent/EP0699528A2/fr

1996-12-27 Publication of EP0699528A3 publication Critical patent/EP0699528A3/fr

1999-04-07 Application granted granted Critical

1999-04-07 Publication of EP0699528B1 publication Critical patent/EP0699528B1/fr

2015-08-02 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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

Definitions

the invention relates to a sheet-guiding drum body, provided with at least two gripper bridges, for a printing press, which is used for sheet transport within the printing press, preferably between the printing units of a rotary printing press.
a device of this type is known from DE-AS 1 102 767. Then one or two (in the case of a double-sized drum with two sheet-bearing lateral surfaces) gripper bridges are arranged on a sheet-guiding drum.
the gripper bar is designed with a rectangular cross-section and causes a uniform vacuum between the sheet and the associated sheet guiding device (envelope body) when rotating. The gripper bar sucks some of the air from the sheet guide, so that the sheet is pressed against the sheet guide by the normal air pressure from the inside of the sheet.
the disadvantage here is that after the sheet has been transferred from the sheet-guiding drum to the impression cylinder, the rear area of the sheet can no longer be guided on the sheet guiding device due to the reduced vacuum, i.e. the bow lifts off. When the sheet is lifted off in the rear area, the lead is doubled in front of the printing gap formed by the impression cylinder and blanket cylinder.
Another drum is known from DE 3 602 084 C2, which has guiding surfaces which are essentially secant between at least two gripper bridges within the drum circumference.
the guide surfaces should serve as air scoops, which in the
Print mode generate an air jam, which keeps the respective sheet with the printed surface away from the guiding surfaces and is thus intended to ensure lubrication-free and doubling-free sheet guidance.
the guide surfaces can also implement the sheet guidance with a sheet guiding device arranged outside the lateral surface of the drum.
the guide surfaces which can also be formed by guide plates, serve to guide the trailing edge of the sheet when the sheet is transferred to the subsequent printing cylinder.
a disadvantage of these designs is that the drum has a high mass due to its design. In printing operation, depending on the number of gripper bars, individual centrifugal forces occur, which have a disadvantageous effect on the fit. Furthermore, the desired dynamic pressure is dependent on the machine speed and is therefore subject to fluctuations.
the object of the invention is to provide a sheet-guiding drum body with low mass, which has a high degree of rigidity, so that an exact fit is achieved and the drum body itself avoids an air congestion acting on the bow and generated by guide surfaces.
the drum body achieves a noticeable reduction in mass through the arrangement of communicating openings in the side surfaces.
the stiffness is increased by the design, which leads to less deflection during printing and thus to improved registration.
the reduction in mass lowers the production costs, the drum body being produced in gray cast iron, nodular cast iron or light metal castings, in particular cast aluminum.
the communicating openings arranged in the side surfaces are dimensioned such that no air jam caused by "light surfaces” can act on the arch. When the drum body rotates, the air flow flows through the openings counter to the direction of travel of the sheet, so that the sheet is essentially only guided by centrifugal moments. It was found that there are no wave phenomena on the arch that would otherwise "flutter" the arch in the rear area. The sheet is guided quietly on the adjacent sheet guide.
the drum body provided with communicating breakthroughs is not limited in its use to a sheet-guiding transfer drum in printing units. Rather, the drum body is also suitable as a delivery drum, intermediate drum, e.g. in extension modules etc.
a sheet-guiding drum body 1 is arranged downstream of a printing cylinder of the previous printing unit in an offset rotary printing press, and a printing cylinder of a further printing unit is arranged downstream of the drum body 1.
the drum body 1 (FIGS. 1 and 2) is based on a single-size pressure cylinder with a twice the diameter and thus carries two gripper bridges 4.
the gripper bridges 4 are arranged symmetrically (180 ° offset).
Each gripper bridge 4 consists of a gripper shaft, grippers and at least one gripper bar.
the gripper bar supports support blocks assigned to each gripper for the individual gripper support.
the drum body 1 is rotatably received with its two drum journals 5 in one mounting of a frame.
the basic shape of the drum body 1 is based on a prism.
a double-sized drum body 1 (according to FIGS. 1 and 2) there is essentially a cuboid, on the base and top surface of which the gripper bridges 4 are fixed.
the gripper bridges 4 are thus arranged symmetrically (180 ° offset) on the circumference in this embodiment.
the already mentioned drum pins 5 are arranged on the end faces of the cuboid in the axis of rotation of the drum body 1.
the side surfaces of the cuboid have openings 3 which are connected to one another. The side surfaces can be flat or slightly curved.
the double-sized drum body 1 is designed as a hollow profile 2, it can also be made of solid material or a structure, for example a honeycomb structure.
a large number of openings 3 are made in the hollow profile 2, the solid material or the structure, which are arranged approximately congruently or offset on each side surface. Regardless of the size or location, the openings 3 of the front side wall in the sheet transport direction are designed to communicate with the rear side wall.
an axially continuous web 6 is arranged in the hollow profile 2, which merges into the drum pin 5.
a triple-sized drum body 1 is essentially formed with its prismatic shape by three cuboid rays (star-shaped) in the axis of rotation of the drum body 2. 3, the axis of rotation is preferably formed by the web 6.
the cover surfaces of the cuboids are in turn assigned to the gripper bridges 4, which are arranged offset by 120 ° in the triple-sized drum body 2.
a further training as a triple-sized drum body 1 with a prismatic shape is carried out by a trigonal prism, also called a triangular prism (FIG. 5).
the gripper bridges 4 are in turn arranged symmetrically offset by 120 ° on the circumference.
the side surfaces have communicating openings 3. In FIG.
the triple-sized drum body 1 according to FIG. 3 and according to FIG. 5 is again designed as a hollow profile 2 in the present example.
a quadruple-sized drum body 1 is essentially formed as a prismatic shape by four cuboids united in the shape of a star in the axis of rotation (FIG. 4). Alternatively, training as a tetragonal prism (square prism) is also possible (not shown).
the gripper bridges 4 are in turn arranged symmetrically on the circumference (offset by 90 °).
the drum body 1 is designed as a hollow profile and has a web 6 merging into the drum journal 5 in the region of the axis of rotation. Communicating openings 3 are arranged on the side surfaces of each cuboid. The side surfaces themselves can in turn be flat or curved.
sheet guiding devices are preferably arranged, on which the sheet with the unprinted side to be led.
the mode of action is as follows: A bow is fed from an upstream cylinder to the drum body 1. The drum body 1 takes over the bow with its gripper bridge 4. The sheet fixed in the gripper closure is guided by the drum body 1 into the sheet outlet and sheet emergence and transferred to the downstream printing cylinder. Due to the rotary movement of the drum body 1, the ambient air flows through the openings 3 and past the gripper bridges 4. Depending on the machine speed, the sheet is guided (pressed) by a centrifugal moment against the sheet guiding devices and on to the transfer area. The arch shows a smooth arch movement, without undulation of the rear area. There is therefore no air jam on the printed side of the sheet to keep it away from the guiding surfaces.

Landscapes

Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Rotary Presses (AREA)
Inking, Control Or Cleaning Of Printing Machines (AREA)
Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Discharging, Photosensitive Material Shape In Electrophotography (AREA)

EP95112126A 1994-09-01 1995-08-02 Cylindre de transfer de feuilles pour machine à imprimer Expired - Lifetime EP0699528B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4431114A DE4431114C2 (de)	1994-09-01	1994-09-01	Bogenführender Trommelkörper für eine Druckmaschine
DE4431114		1994-09-01

Publications (3)

Publication Number	Publication Date
EP0699528A2 true EP0699528A2 (fr)	1996-03-06
EP0699528A3 EP0699528A3 (fr)	1996-12-27
EP0699528B1 EP0699528B1 (fr)	1999-04-07

Family

ID=6527148

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP95112126A Expired - Lifetime EP0699528B1 (fr)	1994-09-01	1995-08-02	Cylindre de transfer de feuilles pour machine à imprimer

Country Status (4)

Country	Link
US (1)	US5669305A (fr)
EP (1)	EP0699528B1 (fr)
AT (1)	ATE178532T1 (fr)
DE (2)	DE4431114C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19848720A1 (de) *	1998-10-22	2000-05-18	Bundesdruckerei Gmbh	Verfahren und Vorrichtung zur schmierstellenfreien Führung von Druckerzeugnissen in Druckmaschinen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4442301C5 (de) *	1994-09-05	2006-12-14	Heidelberger Druckmaschinen Ag	Bogenüberführtrommel
DE29918309U1 (de) *	1999-10-16	1999-12-23	MAN Roland Druckmaschinen AG, 63075 Offenbach	Umführtrommel für Bogendruckmaschinen
DE20001970U1 (de)	2000-02-04	2000-03-23	MAN Roland Druckmaschinen AG, 63075 Offenbach	Bogenführender Trommelkörper für eine Bogenrotationsdruckmaschine
GB2387040B (en) *	2002-03-28	2004-03-10	Wheeler & Clinch Ltd	A contact

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1102767B (de)	1958-08-21	1961-03-23	Miehle Goss Dexter Inc	Bogentransporteinrichtung an Druckpressen
DE3602084C2 (fr)	1986-01-24	1989-12-28	Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DD57345A (fr) *
DE725705C (de) *	1941-01-25	1942-09-28	Willy Mailaender	Rotationsgummidruckmaschine zum mehrfarbigen Bedrucken von Blechtafeln
US2933039A (en) *	1958-08-21	1960-04-19	Miehle Goss Dexter Inc	Sheet transferring mechanism
US3287013A (en) *	1964-11-12	1966-11-22	Itek Corp	Roller rframe
US3642274A (en) *	1970-08-07	1972-02-15	Francis Walter Herrington	Sheet-supporting assembly for an inverter roll
US3780925A (en) *	1972-10-10	1973-12-25	N Ternes	Retractable wheel for paper guiding cylinder
DD273604B3 (de) *	1988-07-05	1993-03-11	Kba Planeta Ag	Bogenfuehrungszylinder
DE3929228A1 (de) *	1989-09-02	1991-03-21	Koenig & Bauer Ag	Ueberfuehrtrommel
DE9116367U1 (de) *	1991-06-15	1992-09-24	Koenig & Bauer AG, 8700 Würzburg	Zylinder für die Papierführung an Bogenrotationsdruckmaschinen
GB2268162A (en) *	1992-06-19	1994-01-05	Shinohara Machinery Co Ltd	Sheet-feeding cylinder with grippers.

1994
- 1994-09-01 DE DE4431114A patent/DE4431114C2/de not_active Expired - Fee Related
1995
- 1995-08-02 AT AT95112126T patent/ATE178532T1/de not_active IP Right Cessation
- 1995-08-02 DE DE59505569T patent/DE59505569D1/de not_active Expired - Lifetime
- 1995-08-02 EP EP95112126A patent/EP0699528B1/fr not_active Expired - Lifetime
- 1995-09-01 US US08/522,629 patent/US5669305A/en not_active Expired - Fee Related

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1102767B (de)	1958-08-21	1961-03-23	Miehle Goss Dexter Inc	Bogentransporteinrichtung an Druckpressen
DE3602084C2 (fr)	1986-01-24	1989-12-28	Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19848720A1 (de) *	1998-10-22	2000-05-18	Bundesdruckerei Gmbh	Verfahren und Vorrichtung zur schmierstellenfreien Führung von Druckerzeugnissen in Druckmaschinen

Also Published As

Publication number	Publication date
ATE178532T1 (de)	1999-04-15
DE4431114A1 (de)	1996-03-07
US5669305A (en)	1997-09-23
EP0699528B1 (fr)	1999-04-07
EP0699528A3 (fr)	1996-12-27
DE59505569D1 (de)	1999-05-12
DE4431114C2 (de)	1999-11-18

Publication	Publication Date	Title
EP0706881B1 (fr)	1997-12-29	Système de guidage de feuilles dans le dispositif de retournement d'une machine à imprimer recto-verso
DE4442301C5 (de)	2006-12-14	Bogenüberführtrommel
EP0922574B1 (fr)	2002-02-20	Dispositif de guidage de feuilles dans une machine à imprimer
EP0000011B2 (fr)	1983-08-24	Machine rotative pour imprimer des feuilles.
EP0699528B1 (fr)	1999-04-07	Cylindre de transfer de feuilles pour machine à imprimer
DE3819186A1 (de)	1989-02-23	Verfahren und vorrichtung zum ueberfuehren eines frisch bedruckten bogens
DE4430105C2 (de)	1996-07-04	Verfahren und Vorrichtung zur flächigen Führung von im Greiferschluß fixierten Bogen auf einer gekrümmten Oberfläche eines Zylinders einer Roationsdruckmaschine
DE4403884C2 (de)	2003-09-18	Bogenrotationsdruckmaschine
EP0490087B1 (fr)	1994-11-02	Dispositif pour déplisser les feuilles sur le cylindre d'impression dans une presse rotative à feuilles
CH661898A5 (de)	1987-08-31	Rollenoffset-rotationsdruckmaschine.
CH651501A5 (en)	1985-09-30	Sheet-fed rotary printing machine having at least one printing unit
EP0706882B1 (fr)	1997-12-29	Tambour de transfert de feuilles pour une machine d'impression
EP0508218B1 (fr)	1994-09-21	Dispositif de guidage de feuilles sur cylindres de transfert pour machines à imprimer des feuilles
DD249224A1 (de)	1987-09-02	Transferzylinder in druckmaschinen
DE2150986C3 (de)	1980-09-25	Vorrichtung zur Beeinflussung der Durchwölbung einer Druckträgerbahn zwischen mindestens zwei Druckwerken einer Rollenrotationsdruckmaschine
DE2111049A1 (de)	1972-09-21	Kettenausleger fuer Bogendruckmaschinen
EP0709186B1 (fr)	1998-04-22	Pince préliminaire pour machines rotatives d'impression pour feuilles
DE4424965C2 (de)	2000-05-04	Einrichtung zur Wendung von Bogen
EP1122063B1 (fr)	2008-12-17	Cylindre de transfer de feuilles pour machine à imprimer rotative
DD259389A1 (de)	1988-08-24	Bogenleiteinrichtung in bogenauslagen
DE4448055B4 (de)	2011-11-10	Bogenüberführtrommel
DE10024846B4 (de)	2011-03-24	Bogenleiteinrichtungen
DE2307125C3 (de)	1977-10-27	Einrichtung an Mehrfarben-Bogenrotations-Offsetdruckmaschinen in Reihenbauart zum passergerechten Transport
DD275212A1 (de)	1990-01-17	Farbwerk fuer druckmaschinen
DE8415129U1 (de)	1985-10-24	Bogen-Rotationsdruckmaschine für einseitigen Mehrfarbendruck oder Schön- und Widerdruck

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EP0699528A2 - Cylindre de transfer de feuilles pour machine à imprimer - Google Patents

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Classifications

Definitions

Landscapes

Applications Claiming Priority (2)

Publications (3)

Family

ID=6527148

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (4)

Citations (2)

Family Cites Families (10)

Patent Citations (2)

Cited By (1)

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