EP0699528B1 - Cylindre de transfer de feuilles pour machine à imprimer - Google Patents

Cylindre de transfer de feuilles pour machine à imprimer Download PDF

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Publication number
EP0699528B1
EP0699528B1 EP95112126A EP95112126A EP0699528B1 EP 0699528 B1 EP0699528 B1 EP 0699528B1 EP 95112126 A EP95112126 A EP 95112126A EP 95112126 A EP95112126 A EP 95112126A EP 0699528 B1 EP0699528 B1 EP 0699528B1
Authority
EP
European Patent Office
Prior art keywords
drum
drum body
sheet guiding
sheet
gripper
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
Application number
EP95112126A
Other languages
German (de)
English (en)
Other versions
EP0699528A3 (fr
EP0699528A2 (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.)
Filing date
Publication date
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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(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0699528A2 publication Critical patent/EP0699528A2/fr
Publication of EP0699528A3 publication Critical patent/EP0699528A3/fr
Application granted granted Critical
Publication of EP0699528B1 publication Critical patent/EP0699528B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 one with at least two gripper bridges provided sheet-guiding drum body for a printing press, the the 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. After that there are one or two (with double-sized drum with two bow-carrying lateral surfaces) gripper bridges on a sheet-guiding Drum arranged.
  • the gripper bar is with one rectangular cross-section and causes a rotation uniform vacuum between the sheet and the associated Sheet guiding device (envelope body).
  • the gripper bar sucks a part of the air from the sheet guide, so that the Arch against normal arc pressure from the inside of the arch the sheet guiding device is pressed.
  • the disadvantage here is that after handing over the sheet from the sheet-guiding Drum to the impression cylinder the rear area of the sheet due to the reduced vacuum no longer on the sheet guiding device can be managed, i.e. the bow lifts off.
  • the Lifting off the arch in the rear area leads to double the lead in front of the printing gap formed by the impression cylinder and blanket cylinder.
  • Another drum is known from DE 3 602 084 C2 between at least two gripper bars within the drum circumference has guiding surfaces designed essentially as secants.
  • the guide surfaces should serve as air scoops, which in the Print mode generate an air jam that the respective sheet with keeps the printed surface away from the guiding surfaces and thus one to ensure lubrication and doubling-free sheet guidance.
  • the Baffles can also be used with an outside facing surface Arranged sheet guide device realize the sheet guide.
  • the guiding surfaces also serve, which are also provided by baffles can be formed to guide the trailing edge of the sheet upon delivery of the sheet to the subsequent printing cylinder.
  • a disadvantage of these designs is that the drum through Design has a high mass. In printing operation occur dependent on the number of rapier bridges individual centrifugal forces adversely affect the fit of the passport. Furthermore, the desired dynamic pressure depending on the machine speed and thus subject to fluctuations.
  • US-A-5172634 is a transfer drum for a sheet-fed printing machine known, the one depending on the sheet format adjustable drum-shaped curved Has lateral surface and an arch with two gripper bridges in double Clamshell leads at the front and rear edge lying on the lateral surface.
  • the object of the invention is to provide a sheet-guiding drum body to create low mass, which has a high rigidity, so that an exact fit is achieved and the drum body even one that acts on the arch and is generated by guide surfaces, Avoids air congestion.
  • the drum body is achieved through the arrangement of communicating Breakthroughs in the side surfaces a noticeable reduction in mass.
  • the rigidity is increased by the design, which in printing operation to lower deflection and thus to an improved registration leads.
  • the mass reduction lowers the manufacturing costs, the drum body in gray cast iron, nodular cast iron or light metal cast iron, in particular cast aluminum is produced.
  • the in the Communicating breakthroughs arranged on the side surfaces are such dimensioned that no air congestion caused by "light surfaces" the bow can work.
  • the air flow flows when the Drum body through the openings against the sheet running direction through, so that the arc essentially only by centrifugal moments is led. It was found that no wave appearance occur on the arch, which otherwise the arch in the rear Let the area "flutter". The arch becomes quiet on the neighboring one Guided sheet guide.
  • the drum body provided with communicating openings is in terms of its use, not on a sheet-carrying transfer drum limited to printing units. Rather, the Drum body also as delivery drum, intermediate drum, e.g. in Extension modules etc.
  • a sheet-guiding drum body 1 is in an offset rotary printing machine a printing cylinder of the previous printing unit downstream and the drum body 1 is a printing cylinder subordinate to another printing unit.
  • the drum body 1 (Fig. 1 and 2) is related to a single-sized impression cylinder with one designed twice the diameter and thus carries two gripper bridges 4.
  • the gripper bridges 4 are on the circumference of the drum body 1 arranged symmetrically (180 ° offset). Every grab bridge 4 consists of a gripper shaft, grippers and at least one Gripper impact bar.
  • the gripper bar supports for support blocks assigned to each gripper for the single gripper support.
  • the drum body 1 is with its two drum pins 5 rotatably received in a storage of a frame.
  • the basic shape of the drum body 1 is based on a prism.
  • a double-sized drum body 1 (according to FIG. 1 and 2) there is essentially a cuboid, at the base and Cover surface the gripper bridges 4 are fixed.
  • the gripper bars 4 are therefore symmetrical (offset by 180 °) on this version Scope arranged. They are on the faces of the cuboid already mentioned drum pin 5 in the axis of rotation of the drum body 1 arranged.
  • the side surfaces of the cuboid have openings 3, which are interconnected.
  • the side faces can be flat or slightly curved.
  • the double size Drum body 1 is in the present example as a hollow profile 2 trained, it can also be made of solid material or one Structure, e.g.
  • Honeycomb structure On the side surfaces are a plurality of openings 3 in the hollow profile 2, the Solid material or the structure introduced, which is almost congruent or are also offset on each side surface. Regardless of the size or location, the openings 3 of the in Sheet transport direction front side wall with the rear side wall communicating. To stiffen the axis of rotation of the double-sized drum body 1 is an axial in the hollow profile 2 continuous web 6 arranged, which merges into the drum pin 5.
  • a triple-sized drum body 1 is essentially with his prismatic shape by three radiating (star-shaped) in the Axis of rotation of the drum body 2 united cuboids formed.
  • 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 is offset by 120 ° in the triple-sized drum body 2 are arranged. Further training as a triple-sized drum body 1 with a prismatic shape is replaced by a trigonal prism, also called triangular prism (Fig. 5).
  • the gripper bridges 4 are in turn symmetrically offset by 120 ° on the circumference arranged.
  • the side surfaces have communicating openings 3 on.
  • the triple-sized drum body 1 3 and 5 is again in the present example executed as a hollow profile 2.
  • a four times larger drum body 1 is essentially a prismatic one Form by four radiating (star-shaped) in the Rotation axis united cuboid (Fig. 4). Alternatively offers training as a tetragonal prism (square prism) on (not shown).
  • the gripper bridges 4 are again symmetrical arranged on the circumference (offset by 90 °).
  • the drum body 1 is as Hollow profile executed and has an in in the region of the axis of rotation the drum pin 5 transition web 6.
  • breakthroughs 3 are arranged in each cuboid.
  • the Side surfaces themselves can again be flat or curved be.

Landscapes

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

Claims (12)

  1. Corps de cylindre de transfert de feuilles (1) pour une machine d'impression, qui est monté, dans des bâtis latéraux, au moyen de tourillons (5) agencés de façon frontale, et qui présente au moins deux ponts de pinces (4) agencés de façon symétrique à la périphérie et guidant la feuille respective dans l'emprise des pinces,
    caractérisé en ce que le corps de cylindre (1) est formé généralement par une ou plusieurs formes prismatiques assemblées à l'intérieur de la périphérie du cylindre, sur les surfaces de base et/ou de recouvrement desquelles sont agencés les ponts de pinces (4), des évidements communicants (3) étant prévus sur leurs surfaces latérales, lesquels, lors de la rotation, sont traversés par l'air environnant, la feuille étant guidée par des moments centrifuges.
  2. Corps de cylindre de transfert de feuilles selon la revendication 1,
    caractérisé en ce que, dans le cas d'un corps de cylindre (1) de taille double ayant deux ponts de pinces (4) agencés de façon décalée de 180°, la forme prismatique est généralement formée par un parallélépipède.
  3. Corps de cylindre de transfert de feuilles selon la revendication 1,
    caractérisé en ce que, dans le cas d'un corps de cylindre (1) de taille triple ayant trois ponts de pinces (4) agencés de façon décalée de 120°, la forme prismatique est généralement formée par trois parallélépipèdes réunis sous forme de rayons ou sous forme d'étoile sur l'axe de rotation.
  4. Corps de cylindre de transfert de feuilles selon la revendication 1,
    caractérisé en ce que, dans le cas d'un corps de cylindre (1) de taille quadruple ayant quatre ponts de pinces (4) agencés de façon décalée de 90°, la forme prismatique est généralement formée par quatre parallélépipèdes réunis sous forme de rayons ou sous forme d'étoile sur l'axe de rotation.
  5. Corps de cylindre de transfert de feuilles selon les revendications 1 à 4,
    caractérisé en ce que les évidements communiquants (3) présentent une taille identique ou différente.
  6. Corps de cylindre de transfert de feuilles selon les revendications 1 à 5,
    caractérisé en ce que le corps de cylindre (1) est formé à partir d'un profilé creux (2).
  7. Corps de cylindre de transfert de feuilles selon les revendications 1 à 6,
    caractérisé en ce que le corps de cylindre (1) est associé, à l'extérieur de la périphérie du cylindre, à un dispositif de guidage de feuilles.
  8. Corps de cylindre de transfert de feuilles selon les revendications 1 à 5,
    caractérisé en ce que la forme prismatique présente des surfaces latérales planes ou cintrées.
  9. Corps de cylindre de transfert de feuilles (1) pour une machine d'impression, qui est monté, dans des bâtis latéraux, au moyen de tourillons (5) agencés de façon frontale, et qui présente au moins deux ponts de pinces (4) agencés de façon symétrique à la périphérie et guidant la feuille respective dans l'emprise des pinces,
    caractérisé en ce que le corps de cylindre (1) de taille triple ayant trois ponts de pinces (4) agencés de façon décalée de 120° à l'intérieur de la périphérie du cylindre est formé par un prisme triangulaire sur les surfaces latérales duquel sont prévus des évidements communiquants (3), qui, lors de la rotation, sont traversés par l'air environnant, la feuille étant guidée par des moments centrifuges.
  10. Corps de cylindre de transfert de feuilles selon la revendication 9,
    caractérisé en ce que le corps de cylindre (1) est formé à partir d'un profilé creux.
  11. Corps de cylindre de transfert de feuilles selon la revendication 9,
    caractérisé en ce que le corps de cylindre (1) est associé, à l'extérieur de la périphérie du cylindre, à un dispositif de guidage de feuilles.
  12. Corps de cylindre de transfert de feuilles selon la revendication 9,
    caractérisé en ce que la forme prismatique présente des surfaces latérales planes ou cintrées.
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
DE4431114 1994-09-01
DE4431114A DE4431114C2 (de) 1994-09-01 1994-09-01 Bogenführender Trommelkörper für eine Druckmaschine

Publications (3)

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

Families Citing this family (5)

* 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
DE19848720A1 (de) * 1998-10-22 2000-05-18 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur schmierstellenfreien Führung von Druckerzeugnissen in Druckmaschinen
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

Family Cites Families (12)

* 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
DE1102767B (de) * 1958-08-21 1961-03-23 Miehle Goss Dexter Inc Bogentransporteinrichtung an Druckpressen
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
DE3602084A1 (de) * 1986-01-24 1987-07-30 Heidelberger Druckmasch Ag Bogenueberfuehrtrommel zwischen den druckwerken von rotationsdruckmaschinen
DD273604B3 (de) * 1988-07-05 1993-03-11 Kba Planeta Ag Bogenfuehrungszylinder
DE3929228A1 (de) * 1989-09-02 1991-03-21 Koenig & Bauer Ag Ueberfuehrtrommel
DE4119824C1 (fr) * 1991-06-15 1992-12-03 Koenig & Bauer Ag, 8700 Wuerzburg, De
GB2268162A (en) * 1992-06-19 1994-01-05 Shinohara Machinery Co Ltd Sheet-feeding cylinder with grippers.

Also Published As

Publication number Publication date
DE59505569D1 (de) 1999-05-12
ATE178532T1 (de) 1999-04-15
DE4431114C2 (de) 1999-11-18
EP0699528A3 (fr) 1996-12-27
DE4431114A1 (de) 1996-03-07
US5669305A (en) 1997-09-23
EP0699528A2 (fr) 1996-03-06

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