EP0243737A2 - Cylindre de retournement pour machine rotative à imprimer des feuilles - Google Patents

Cylindre de retournement pour machine rotative à imprimer des feuilles Download PDF

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Publication number
EP0243737A2
EP0243737A2 EP87105105A EP87105105A EP0243737A2 EP 0243737 A2 EP0243737 A2 EP 0243737A2 EP 87105105 A EP87105105 A EP 87105105A EP 87105105 A EP87105105 A EP 87105105A EP 0243737 A2 EP0243737 A2 EP 0243737A2
Authority
EP
European Patent Office
Prior art keywords
drum
sheet
turning
turning drum
flanges
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.)
Withdrawn
Application number
EP87105105A
Other languages
German (de)
English (en)
Other versions
EP0243737A3 (fr
Inventor
Kurt Difflipp
Heinrich Ochs
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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0243737A2 publication Critical patent/EP0243737A2/fr
Publication of EP0243737A3 publication Critical patent/EP0243737A3/fr
Withdrawn legal-status Critical Current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
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine

Definitions

  • the invention relates to a reversing drum on a sheet-fed rotary printing press for optional face or back printing, for removing a paper sheet on its front or rear edge from a storage drum arranged upstream of the reversing drum, the reversing drum having free spaces for receiving gripper systems and gear elements, and one the sheet-guiding cylindrical surface, which extends over more than half the circumference of the turning drum, is provided.
  • Reversing drums in sheet-fed rotary printing presses are required in order to capture the printing sheet on the leading storage drum either at its leading edge or at its trailing edge and to transfer this edge as a leading edge to a downstream printing cylinder.
  • gear parts and adjusting mechanisms are necessary to generate the functions of sheet transfer and sheet transfer as well as the very different movement sequences. Installation and maintenance is therefore often not very easy. Precisely because of the complex sequences of movements, it must also be ensured that the surface of the turning drum, which always comes into contact with the printed side of the sheet, does not damage the previous print or does not smear its fresh color on the turning drum and subsequent sheets contaminated uncontrollably. This applies particularly to the sheet turning mode of operation and, when using problematic substrates, particularly thin or thick papers.
  • a turning drum has been described in DE-AS 2 604 895.
  • a device for changing the Grei ferschul explained with a reversing drum for face and reverse printing machines has a pit, inside which are pins, a torsion bar spring connecting the pins, an eccentric bolt with eccentric pin and a slotted plate.
  • These elements serve to brace, mount and shift drive elements with cam rollers for driving pliers grippers with respect to control cams which are assigned to the turning drum on both sides.
  • a longitudinally different bridge is provided to close the pit which interrupts the arc-guiding surface and also carries the pins, the torsion bar spring and the eccentric bolt. Therefore, guide and clamping elements on the turning drum are necessary to ensure the position of the bridge or to facilitate its displacement.
  • the pit is closed with a separate filler piece in order to cover the drive parts underneath.
  • the sheet-guiding surface of the turning drum is made partly from the base material, partly from the material of the filler or the bridge. This can easily result in irregularities within the surface of the turning drum. In order to avoid this, a relatively high manufacturing outlay for fitting the bridge or the filler piece has to be carried out.
  • the arrangement of one of the covers described makes only a small part of the gear elements present in the turning drum accessible. The drum itself is therefore relatively complicated. A great deal of effort must be expended for production and assembly.
  • the surface of the turning drum is not adapted to conditions dependent on the printing process or can only be adapted with great effort.
  • the object of the invention is therefore to create a turning drum which has a construction which is favorable for assembly and maintenance and whose surface can simultaneously be adjusted to different requirements of the printing process.
  • this turning drum is another particular advantage of this turning drum is that the surface can be adapted to the respective printing conditions. Since the reversing drum is to be operated with different printing materials, it will also come into contact with the fresh print of the previous printing unit to different degrees. This will be particularly the case when printing cardboard. It is then very advantageous if a closed surface on the turning drum can be exchanged for a surface with movable support rollers. This makes it possible to adjust the support of the printed sheet to certain pressure-free areas.
  • a jacket element with a special coating and means for holding an ink-repellent cover can also be used for the outer surface of the turning drum. The associated jacket elements are very light interchangeable on the reversing drum and enable smear-free operation with a wide range of substrates and with differently sensitive printing surfaces.
  • the base body 1 of the turning drum is shown. It has bearing pins 2, disk-shaped and fully cylindrical flanges 3 and a support body 4 in the form of a shaft.
  • the base body 1 is designed as a one-piece casting on which the bearing pins 2, the flanges 3 and mounting surfaces for the sheet transport elements must be machined.
  • gripper shafts 5 are rotatably supported on pedestals 6.
  • the gripper shafts 5 pass through the flanges 3 with their shaft ends 7, on which drive elements are fastened.
  • roller levers 8 for controlling the gripper opening and, on the other hand, gear wheels 9 for controlling the sheet transfer when the sheet is turned.
  • cam-controlled drive elements 10 which are also mounted in a flange 3, engage in the gear wheels 9.
  • the structure of the gripper shafts 5 and the drive elements 6 to 10 is not shown in detail here, since it is the usual state of the art.
  • the control of the two gripper shafts 5 is differentiated according to the time and sequence of the gripper openings in face printing or in face and back printing.
  • the roller levers 8 work together with a gripper opening curve on the machine frame that can be adjusted to the conditions of the front printing or the perfecting printing.
  • the drive elements 10 for controlling the immersion movement of the gripper shafts 5 when turning the rear edge work together with a turning curve that can be switched on or off on the machine frame.
  • the mechanisms for adjusting the gripper opening curve or for engaging or disengaging the turning curves with the drive elements 10 are located outside the installation space of the turning drum.
  • a drum casing 11 is shown in longitudinal section in FIG. 2. It is designed as a hollow cylindrical part which is provided with a smooth, closed arch support surface 12.
  • the arch support surface 12 is stiffened on the inside of the drum shell 11 with ribs 13.
  • Fastening flanges 14 are provided on the end face of the drum casing 11.
  • the drum shell 11 is in this case as a lumpy cast part, wherein the mounting flanges 14 represent crescent-shaped thickened portions at the axial ends of the drum shell 11.
  • Fastening bores 15 with a screw thread are made in the fastening flanges 14.
  • a mounting flange 14 is shown in an end view. It is clear here that the drum casing 11 is open both on the end face and on its outer surface in the axial direction.
  • This jacket opening 16 corresponds to the pit for the gripper systems in a closed turning drum. In the area of the fastening flanges 14, the jacket opening 16 is designed such that it can be pushed over the supporting body 4.
  • drum shell 11 To assemble the drum shell 11, it is pushed between the flanges 3 onto the drum base body 1. Corresponding holding bores are made in the flanges 3 with the fastening bores 15. The drum shell 11 is fastened to the flanges 3 by simple screwing. The drum casing 11 can be dismantled just as easily for work on the gripper systems.
  • FIG. 4 Another drum jacket 21 with an alternative arch support surface 27 is shown in FIG. 4.
  • the arch support surface does not represent a closed surface here, but is composed of point-shaped and movable arch support surfaces.
  • fastening flanges 17 are connected to one another by support rods 18.
  • the support rods 18 are screwed into holding bores 19 of the mounting flanges 17.
  • On the support rods 18 are freely rotatable and axially displaceable to the drum shell 21 support rollers 20 are attached. By screwing the support rods 18 into the fastening flanges 17, a stable unit is created as a roller drum jacket 21.
  • roller drum jacket 21 is shown in cross section.
  • the fastening flanges 17 are formed in their outer shape similar to the fastening flanges 14. They also have fastening holes 15 in the same type and distribution.
  • the roller drum jacket 21 is also provided with a jacket opening 16. It can therefore be attached to the basic drum body 1 in the same way as the drum jacket 11 by pushing it in and screwing it to the flanges 3.
  • FIG. 6 A third alternative for the formation of the drum shell is shown in FIG. 6.
  • a sheet support surface 23 is attached to the mounting flange, the diameter of which is smaller than the corresponding sheet support surfaces of the drum casing 11 and the roller drum casing 21.
  • the outside of the sheet support surface 23 is provided with a plastic coating with a low coefficient of friction.
  • Clamping devices 24 are attached to the ends of the arch support surface 23. With the help of these clamping devices, a color-repellent cover 25 can be clamped on the arch support surface 23.
  • This drum jacket 26 equipped in this way is also assembled as in the two cases described above.
  • Fastening bores 15 are provided in the fastening flanges 22, which correspond to the holding bores in the flanges 3 of the base body 1, and into which 26 retaining screws are screwed after the drum shell has been inserted.
  • drum jackets 11, 21, 26 By installing these different drum jackets 11, 21, 26, the use of a wide variety of substrates and a wide variety of printed images can be taken into account.
  • the turning drum can be equipped as follows: In the normal case, the drum casing 11 with the closed arch support surface 12 will suffice for processing medium-weight papers and simple subjects. In the case of thicker papers and unevenly distributed subjects, however, it can make sense to use the roller drum jacket 21, since its surface consists of punctiform support areas which can also be adjusted to different areas of the printed sheet. Finally, the version of the drum jacket 26 can be used especially for thinner papers with complicated subjects. The risk of greasing is very low here. The adaptation to the paper load takes place automatically, which is favorable for thin paper, since it must not be stressed too much. However, this version is less suitable for thicker substrates, because the surface is then too compliant.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Basic Packing Technique (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Discharge By Other Means (AREA)
  • Screen Printers (AREA)
  • Rotary Presses (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
EP87105105A 1986-04-29 1987-04-07 Cylindre de retournement pour machine rotative à imprimer des feuilles Withdrawn EP0243737A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3614565 1986-04-29
DE19863614565 DE3614565A1 (de) 1986-04-29 1986-04-29 Wendetrommel in bogenrotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0243737A2 true EP0243737A2 (fr) 1987-11-04
EP0243737A3 EP0243737A3 (fr) 1989-05-03

Family

ID=6299828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105105A Withdrawn EP0243737A3 (fr) 1986-04-29 1987-04-07 Cylindre de retournement pour machine rotative à imprimer des feuilles

Country Status (4)

Country Link
US (1) US4846062A (fr)
EP (1) EP0243737A3 (fr)
JP (1) JPS62261439A (fr)
DE (1) DE3614565A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826348A1 (de) * 1988-08-03 1990-02-08 Roland Man Druckmasch Schaufelradausleger
DE3929228A1 (de) * 1989-09-02 1991-03-21 Koenig & Bauer Ag Ueberfuehrtrommel
DE3930747A1 (de) * 1989-09-14 1991-03-28 Roland Man Druckmasch Bogenfuehrungstrommel in rotationsdruckmaschinen
DE4448055B4 (de) * 1994-09-05 2011-11-10 Heidelberger Druckmaschinen Ag Bogenüberführtrommel
DE19516066C2 (de) * 1995-05-04 1999-09-09 Heidelberger Druckmasch Ag Bogenführende Trommel, insbesondere Auslegetrommel, einer Bogenrotationsdruckmaschine
DE19907446A1 (de) * 1998-03-24 1999-09-30 Heidelberger Druckmasch Ag Bogen verarbeitende Druckmaschine mit wenigstens einer Bogenführungstrommel
DE19934526A1 (de) * 1999-07-22 2001-02-08 Roland Man Druckmasch Bogenführungszylinder für eine Rotationsdruckmaschine
DE102008021693A1 (de) * 2008-04-30 2009-11-05 Koenig & Bauer Aktiengesellschaft Bedruckstoffe führende Fläche in Druckmaschinen
USD822970S1 (en) * 2013-05-13 2018-07-17 Diana Irving Shoe insert
CN103342047B (zh) * 2013-07-16 2015-12-02 成都印钞有限公司 一种轮辐式防蹭脏滚筒

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2144752A (en) * 1936-12-23 1939-01-24 Miehle Printing Press & Mfg Rotary sheet transfer mechanism
EP0172412A2 (fr) * 1984-08-16 1986-02-26 Heidelberger Druckmaschinen Aktiengesellschaft Cylindre de transfert de feuilles dans les rotatives d'impression de feuilles

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH392564A (de) * 1961-09-26 1965-05-31 Color Metal Ag Umführtrommel für Rotationsdruckmaschinen
CH433395A (de) * 1965-03-01 1967-04-15 Planeta Veb Druckmasch Werke Ubergabetrommel für bogenverarbeitende Maschinen, insbesondere Mehrfarbendruckmaschinen
GB1505623A (en) * 1975-07-11 1978-03-30 Heidelberger Druckmasch Ag Transfer drum and drum blanket for sheet-fed rotary printing presses
DE2604895C3 (de) * 1976-02-07 1978-11-16 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zum Umstellen der Greiferbewegung bei einer Wendetrommel für Schön- und Widerdruckmaschinen
SE7701468L (sv) * 1976-02-18 1977-08-19 Maschf Augsburg Nuernberg Ag Bojstyv griparvagn, serskilt avsedd for offsettryckmaskiner
DE3004273C2 (de) * 1980-02-06 1985-02-14 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogengreifervorrichtung
DE8319431U1 (de) * 1983-07-06 1984-02-16 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zur umstellung auf wahlweisen schoendruck oder schoen- und widerdruck einer zwischen den einzelnen druckwerken einer bogenrotationsdruckmaschine angeordneten wendeeinrichtung
US4535691A (en) * 1984-09-12 1985-08-20 Komori Printing Gripper opening/closing apparatus of sheet-fed rotary press
JPS61121501A (ja) * 1984-11-17 1986-06-09 Tdk Corp 誘電体共振器およびその製造方法
US4694750A (en) * 1985-11-21 1987-09-22 Greene Joe A Printing press cylinder with axially adjustable cord anti-smear devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2144752A (en) * 1936-12-23 1939-01-24 Miehle Printing Press & Mfg Rotary sheet transfer mechanism
EP0172412A2 (fr) * 1984-08-16 1986-02-26 Heidelberger Druckmaschinen Aktiengesellschaft Cylindre de transfert de feuilles dans les rotatives d'impression de feuilles

Also Published As

Publication number Publication date
EP0243737A3 (fr) 1989-05-03
JPS62261439A (ja) 1987-11-13
DE3614565A1 (de) 1987-11-05
US4846062A (en) 1989-07-11

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