EP0133484A1 - Abschmierfreie Umführtrommel für Bogenrotationsdruckmaschinen - Google Patents

Abschmierfreie Umführtrommel für Bogenrotationsdruckmaschinen Download PDF

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Publication number
EP0133484A1
EP0133484A1 EP84108272A EP84108272A EP0133484A1 EP 0133484 A1 EP0133484 A1 EP 0133484A1 EP 84108272 A EP84108272 A EP 84108272A EP 84108272 A EP84108272 A EP 84108272A EP 0133484 A1 EP0133484 A1 EP 0133484A1
Authority
EP
European Patent Office
Prior art keywords
air
lubrication
sheet
transfer drum
free transfer
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.)
Ceased
Application number
EP84108272A
Other languages
German (de)
English (en)
French (fr)
Inventor
Georg Jahn
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0133484A1 publication Critical patent/EP0133484A1/de
Ceased legal-status Critical Current

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Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49861—Sizing mating parts during final positional association
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/4987—Elastic joining of parts
    • Y10T29/49872—Confining elastic part in socket

Definitions

  • the invention relates to a lubrication-free transfer drum for sheet-fed rotary printing machines, in which mechanically manufactured blowholes are provided in the drum jacket over the entire sheet-bearing drum circumference.
  • a device of this type is described in DE-PS 1 561 043, according to which, in the case of a delivery drum for sheet-fed printing machines, the sheets are pushed away by air streams emerging from openings arranged on the circumference of the drum, the drum as a whole with a cover made of known material to distribute the emerging air more uniformly , porous and air-permeable Maigrial is provided.
  • the control of the air outlet from the individual openings requires an air control device inside the delivery drum which is very complex both in terms of construction and in terms of cost, the partial or temporal air control in particular causing great problems precisely at the points of the freshly printed sheet which are prone to smearing. Apart from this, there is always a great need for blowing air, which requires an unnecessarily large design of the units for blowing air generation. Even the smallest damage and contamination of the porous drum cover require its costly and time-consuming replacement.
  • the present invention has for its object to provide a maintenance-friendly transfer drum in which evenly over the without time-consuming settings and without considerable control engineering effort entire drum circumference with low blown air requirement should be reliably prevented from smearing freshly printed sheets by building an air cushion that is as free of turbulence and impulses as possible.
  • the object set in this way is achieved according to the invention in that in the blow holes of the drum shell the exiting blowing air is arranged to build up a uniform air cushion which has a flow-influencing air distribution element, which as a radially resilient bearing that automatically drops when a defined tensile force of the pressure sheet or a defined pressure load is exceeded, spherical or spherical arch supports are formed which can be rotated on all sides regardless of the direction.
  • the structural distribution of a large number of individual air distribution elements over the entire drum circumference enables particularly safe, quiet and smear-free sheet transport. Because the choice of material and the shape of the individual arch supports make it very easy to empirically determine the flow conditions required to build up a closed, turbulence-free and pulse-jet-free air cushion, thereby also changing conditions in the printing process as quickly as possible, e.g. Processing of a different paper thickness, which can be taken into account, optimization of a particularly stable sheet transport is possible. Due to the easy interchangeability of individual, e.g. dirty air distribution elements also ensure the greatest possible degree of ease of maintenance and thus operational safety of the transfer drum.
  • the receiving holes in connection with the arch supports are designed as self-regulating blowing air valves supplied by a blowing air unit as a function of the tensile force or pressure load acting on the arch supports.
  • these arch supports in particular partially deflect radially inwards at image areas prone to smearing, against the pressure of the springs, and thereby open - as far as necessary to form a sufficient air cushion - as required to serve as air channels Receiving holes from which the blowing air can then escape independently.
  • the compressive forces or tensile loads acting on the bow carriers are also reduced, as a result of which they are pushed radially outward again and the valve openings are reduced or completely closed.
  • the special effect of the blown air valves with the ball-like or spherical arch supports as actuators compared to the known conventional valves for this purpose is that the air outflow is uniformly diffuse to all sides without the targeted formation of impulse jets, which means that a continuous air cushion can build up.
  • blown air leaks emerging from the closed blown air valves are used to form a constant air cushion.
  • rough and / or different tolerances are advantageously provided for the production of the push-on sleeves and / or arch supports.
  • the drum surface of a transfer drum 1 designed as a blown air drum, with schematically indicated sheet detection devices 2 and 3, is provided with mechanically manufactured, for example drilled, blow holes 4 over the entire drum circumference.
  • the blow holes 4 are preferably distributed in a uniform structure in the drum jacket 17. 2n the blowing holes 4 are inserted with the drum surface flush with the socket 5, the openings on both sides are smaller than the sleeve diameter.
  • Inserted spring elements 6, which are designed as compression springs, are supported on the lower sleeve base, the choice of which spring force is preferably determined empirically.
  • Air-distributing elements 7 are arranged on the compression springs 6 and are designed as spherical or spherical arch carriers, the diameter of which is slightly larger than that of the outer plug-in sleeve openings.
  • the arch supports 7 are held in the receptacles 5 and, in the state that is still unloaded from the arch, project slightly beyond the drum surface by the radially outwardly acting spring pressure, depending on the ratio of the diameter of the arch support 7 to the receptacle opening (FIG. 2).
  • Balls with color-repellent surface and low specificity are preferably used as sheet carriers 7 shear weights and / or from a material that is only statically chargeable.
  • a roller core 14 is mounted, which is provided at the end with a core bore 15.
  • an end disk 16 is fastened on the roller core 14, to which a drum jacket 17, preferably manufactured as a casting, is flanged in a known manner.
  • the receiving holes 4 in the drum jacket 17 must be designed as through holes in this embodiment.
  • the end disk 14 is provided with an annular groove 18, which is connected to the core bore 15 of the roller core 14 via a blind bore 19.
  • the core hole 15 is coupled to an air blowing unit 22 by means of an air coupling 20 via line means 21.
  • the air coupling 20 is indicated schematically in FIG. 4 as a stationary coupling sleeve 23, in which a coupling sleeve 24 driven into the end of the core hole 15 rotates.
  • the blown air generated by the blown air unit 22 can thus flow via the line means 21, the air coupling 20, the core hole 15, the blind hole 19 and the annular groove -18 into the interior of the transfer drum 1 or its individual drum chambers 9.
  • the drum surface of the basic version of the transfer drum 1 can be provided with one or partially with several foils 25.
  • the films 25 can be designed as a tensioning or adhesive film and - as indicated in the left part of FIG. 5 - consist of an air-impermeable material with hydrophilic surface properties, or instead be made of air-permeable material according to the right part of FIG. 5.
  • the thickness 26 of the tensioning or adhesive film 25 may correspond to a maximum of the defined dimension 8 by which the arch supports 7 protrude beyond the drum surface.
  • a freshly printed sheet 27 is taken over by the sheet detection devices 2 and 3 in this way - e.g. after turning the sheet in perfecting machines - that its still damp side is directed downwards against the drum surface.
  • the sheet 27 does not lie over the entire surface of the drum surface, but instead is supported exclusively over its entire surface in a punctiform manner by the sheet carrier 7 projecting slightly from the drum surface. This ensures the least possible contact between the arch and the wing, despite the extremely even arch support.
  • the color-repelling surface design of the arch support 7 also makes it difficult to transfer color from the arch 27 to the arch support 7.
  • This rotary movement has a self-cleaning effect of the sheet carrier 7 as a result, as a result, any paint that is taken over is automatically stripped from the surface of the sheet carrier 7. Because of this, the sheet 27 is always supported by color-free punctiform surface areas of the sheet carrier 7.
  • the selection of the spring force of the compression springs 6 for the purpose of adaptation to given conditions such as printed matter, printing ink and the resulting different tensile forces of the sheet 27 is preferably determined empirically.
  • the alternative for anti-smudge support is in areas susceptible to lubrication, the air-impermeable film 25 shown in FIG. 5 with hydrophilic surface properties, for example by applying tension or gluing.
  • the covered sheet carriers 7 are in the radially indented position.
  • the smear-preventing effect of the drum surface is significantly increased by the use of blown air.
  • the interior of the transfer drum is supplied with blown air via path 10 described above.
  • the blow holes 4 of the blow air valves 11 are opened to a greater or lesser extent, depending on the tension or pressure load on the arch supports 7, as a result of which an air outlet which is oriented towards the requirements is caused to be diffuse in all directions.
  • an air cushion adapted to local requirements is built up, particularly in areas of the sheet 27 that are prone to smearing, which effectively prevents the freshly printed sheet from smearing.
  • arch supports 7 are preferably not yet end treated balls, for example with surface unevenness and still existing roundness. Slightly elliptical arch supports 7 can also be used. Due to the surface unevenness or out-of-roundness - even when the arch support 7 is not loaded by the arch - the outer receptacle openings are not completely closed. The air leaks diffusely emerging from all sides due to the slight tolerance and production-related annular gaps of the closed blower air valves can thus build up a constant air cushion that guarantees smear-free and quiet sheet transport.

Landscapes

  • Treatment Of Fiber Materials (AREA)
  • General Details Of Gearings (AREA)
  • Screen Printers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Rotary Presses (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
  • Soil Working Implements (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Advancing Webs (AREA)
EP84108272A 1983-08-06 1984-07-13 Abschmierfreie Umführtrommel für Bogenrotationsdruckmaschinen Ceased EP0133484A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3328451 1983-08-06
DE19833328451 DE3328451A1 (de) 1983-08-06 1983-08-06 Abschmierfreie umfuehrtrommel fuer bogentotationsdruckmaschinen

Publications (1)

Publication Number Publication Date
EP0133484A1 true EP0133484A1 (de) 1985-02-27

Family

ID=6205960

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84108271A Expired EP0133483B1 (de) 1983-08-06 1984-07-13 Abschmierfreie Umführtrommel für Bogenrotationsdruckmaschinen
EP84108272A Ceased EP0133484A1 (de) 1983-08-06 1984-07-13 Abschmierfreie Umführtrommel für Bogenrotationsdruckmaschinen

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP84108271A Expired EP0133483B1 (de) 1983-08-06 1984-07-13 Abschmierfreie Umführtrommel für Bogenrotationsdruckmaschinen

Country Status (7)

Country Link
US (1) US4552069A (es)
EP (2) EP0133483B1 (es)
AT (1) ATE23823T1 (es)
DE (1) DE3328451A1 (es)
DK (1) DK369584A (es)
ES (1) ES8503566A1 (es)
NO (1) NO843134L (es)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3602084A1 (de) * 1986-01-24 1987-07-30 Heidelberger Druckmasch Ag Bogenueberfuehrtrommel zwischen den druckwerken von rotationsdruckmaschinen
US4722276A (en) * 1986-08-01 1988-02-02 Tyler Jack D Air blast for preventing contact of wet ink sheets with printing press delivery mechanisms
US4874273A (en) * 1987-03-16 1989-10-17 Hitachi, Ltd. Apparatus for holding and/or conveying articles by fluid
US4967661A (en) * 1987-06-05 1990-11-06 Duarte Procuts, Inc. Sheet transfer mechanism for printing press
US4836104A (en) * 1987-06-05 1989-06-06 Duarte Products, Inc. Sheet transfer mechanism for a freshly printed sheet
DE3902923C2 (de) * 1988-03-16 1994-06-01 Heidelberger Druckmasch Ag Bogenführungstrommel für Bogenrotationsdruckmaschinen
NL8800781A (nl) * 1988-03-28 1989-10-16 Stork Screens Bv Werkwijze voor het aanbrengen van een huls op een walskern en walskern geschikt voor bedoelde werkwijze.
DE3827071A1 (de) * 1988-08-10 1990-02-15 Roland Man Druckmasch Luftkissentrommel fuer bogendruckmaschinen
DE3943119C1 (es) * 1989-12-27 1991-06-20 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4244499C2 (de) * 1992-12-30 1995-04-06 Heidelberger Druckmasch Ag Druckmaschine mit bogenführender Fläche
DE4332708C2 (de) * 1993-09-25 2000-05-04 Heidelberger Druckmasch Ag Vorrichtung zum abschmierfreien Bogentransport in Bogendruckmaschinen
DE19545799C1 (de) * 1995-12-08 1997-01-16 Kba Planeta Ag Bogenführungssystem an Bogenführungszylindern in Druckmaschinen
US5842412A (en) * 1997-03-07 1998-12-01 Bba Nonwovens Simpsonville, Inc. Anti-marking covering for printing press transfer cylinder
DE19719624C1 (de) * 1997-05-09 1998-06-10 Heidelberger Druckmasch Ag Bogenrotationsdruckmaschine
US6684774B2 (en) 1997-05-09 2004-02-03 Heidelberger Druckmaschinen Ag Sheet-fed rotary printing press
DE19745763A1 (de) * 1997-10-16 1999-04-22 Heidelberger Druckmasch Ag Transporttrommel in Rotationsdruckmaschinen
US5913268A (en) * 1998-02-17 1999-06-22 Xerox Corporation Pneumatic rollers and paper handling arrangements
DE19848720A1 (de) * 1998-10-22 2000-05-18 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur schmierstellenfreien Führung von Druckerzeugnissen in Druckmaschinen
US6811863B2 (en) 2001-07-20 2004-11-02 Brite Ideas, Inc. Anti-marking coverings for printing presses
WO2007133715A2 (en) * 2006-05-12 2007-11-22 Printguard, Inc. Fixture for anti-marking coverings for printing presses
CN101269760B (zh) 2007-03-23 2011-11-16 海德堡印刷机械股份公司 收纸滚筒及双面印刷机
DE102010023485A1 (de) 2009-07-09 2011-01-13 Heidelberger Druckmaschinen Ag Bogenführungstrommel
ES2755848T3 (es) * 2015-11-23 2020-04-23 Koenig & Bauer Ag Procedimiento y dispositivo con módulos y equipos seccionadores para sustratos en forma de pliego

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1566500A (es) * 1967-03-16 1969-05-09
EP0059944A1 (en) * 1981-03-11 1982-09-15 Howard W. Demoore Method and apparatus for handling printed sheet material

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125265A (en) * 1964-03-17 Method and apparatus for scanning the surface of a moving web
US1170209A (en) * 1909-04-03 1916-02-01 Wood Newspaper Mach Corp Paper-lubricating device for printing-presses.
US2030304A (en) * 1931-07-20 1936-02-11 Theodore E Knowlton Printing
DE1213429B (de) * 1965-07-30 1966-03-31 Planeta Veb Druckmasch Werke Bogenfuehrungstrommel fuer Rotationsdruckmaschinen
US3442506A (en) * 1967-06-30 1969-05-06 Miehle Goss Dexter Inc Antismudge sheet transfer device
DE2446188C3 (de) * 1974-09-27 1983-11-24 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenführende Mantelfläche von Gegendruckzylindern oder Bogenüberführungszylindern in Rotationsoffsetdruckmaschinen
DE2550721C3 (de) * 1975-11-12 1986-07-31 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Übergabetrommel an einer Druckmaschine
US4091979A (en) * 1976-03-29 1978-05-30 Bell & Howell Company Methods and apparatus for precision guiding a web
DK40181A (da) 1980-03-31 1981-10-01 Heidelberger Druckmasch Ag Arkoverfoeringscylinder for rotationstrykmaskine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1566500A (es) * 1967-03-16 1969-05-09
EP0059944A1 (en) * 1981-03-11 1982-09-15 Howard W. Demoore Method and apparatus for handling printed sheet material

Also Published As

Publication number Publication date
DK369584A (da) 1985-02-07
EP0133483A3 (en) 1985-04-10
ES533963A0 (es) 1985-03-16
DE3328451A1 (de) 1985-02-21
ATE23823T1 (de) 1986-12-15
EP0133483B1 (de) 1986-11-26
DK369584D0 (da) 1984-07-27
US4552069A (en) 1985-11-12
ES8503566A1 (es) 1985-03-16
EP0133483A2 (de) 1985-02-27
NO843134L (no) 1985-02-07

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19840713

AK Designated contracting states

Designated state(s): AT CH FR GB IT LI NL SE

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Effective date: 19860312

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Effective date: 19860822

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JAHN, GEORG