EP0354415B1 - Luftkissentrommel für Bogendruckmaschinen - Google Patents

Luftkissentrommel für Bogendruckmaschinen Download PDF

Info

Publication number
EP0354415B1
EP0354415B1 EP89113858A EP89113858A EP0354415B1 EP 0354415 B1 EP0354415 B1 EP 0354415B1 EP 89113858 A EP89113858 A EP 89113858A EP 89113858 A EP89113858 A EP 89113858A EP 0354415 B1 EP0354415 B1 EP 0354415B1
Authority
EP
European Patent Office
Prior art keywords
air cushion
air
roller
absorbing layer
cushion roller
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
EP89113858A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0354415A2 (de
EP0354415A3 (en
Inventor
Paul Abendroth
Harry Brandes
Rudolf Raab
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
Priority to AT89113858T priority Critical patent/ATE82556T1/de
Publication of EP0354415A2 publication Critical patent/EP0354415A2/de
Publication of EP0354415A3 publication Critical patent/EP0354415A3/de
Application granted granted Critical
Publication of EP0354415B1 publication Critical patent/EP0354415B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/243—Suction rollers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/228—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by air-blast devices

Definitions

  • the invention relates to an air cushion drum for sheet-fed printing presses, in which air flows are supplied from openings in the drum shell through a cavity in the interior of the drum and through which the sheets are pressed away from the drum shell.
  • An air cushion drum of the type specified is known from DE-PS 1 561 043.
  • the drum jacket consists of a porous material, so that the air is radially distributed evenly over the drum length from a large number of pores and forms a thin air cushion on the drum circumference, causing the printed sheets to come into contact with the drum and thus smearing of the ink application is prevented.
  • the known drum is double-walled and the cavity created by the double wall is divided by ribs into individual chambers extending parallel to the drum axis, which are supplied with air in succession by means of control elements during one revolution of the drum.
  • Air cushion drums of the specified type have proven themselves in practice. However, the noises caused by the air currents are perceived as disadvantageous.
  • the object of the invention is to provide an air cushion drum of the type mentioned, in which the flow noise is low.
  • This object is achieved in that the openings for the air outlet in the drum shell in the cavity opposite a sound absorbing layer.
  • the sound-absorbing layer in the cavity forms an air-permeable partition wall which is essentially equidistant from the drum shell and through which the air is passed to the inside of the drum shell.
  • This arrangement has the additional advantage that a uniform pressure distribution over the entire drum width is achieved and a uniform air cushion is created under the arch.
  • the sound-absorbing layer of the dividing wall can be carried by a grating and, in order to reduce the flow resistance, it can be provided that the struts of the grating have a cross-section which is drop-shaped in the direction of flow.
  • it can be provided with a plurality of radial channels according to a further proposal of the invention. It has been shown that the sound-absorbing effect is further favored by these channels.
  • the sound-absorbing layer can be coated with a dimensionally stable layer, preferably made of plastic, which absorbs the forces caused by the air flow and the rotary movement of the drum and holds the layer to the grille.
  • the sound absorbing layer is made of felt.
  • the measures according to the invention in connection with a drum casing have proven to be particularly effective.
  • the drum jacket preferably consists of a support screen, a filter carton and a cover screen in the order from the inside to the outside.
  • the invention is explained in more detail below with reference to an embodiment shown in the drawing.
  • the drawing shows a cross section through an air cushion drum according to the invention.
  • the air cushion drum 1 shown consists of an inner, essentially cylindrical drum body 2, which can be fastened on a continuous shaft with divided flange rings 3, 4. At both ends, the drum body 2 has conically widening end walls 5, 6, each of which is followed by a radial annular collar 7.
  • a grating 13 is provided concentrically to the latter, which is formed from struts 14 which are parallel to the axis and struts 15 extending in the circumferential direction.
  • the cavity 12 is divided into individual chambers which can be connected in succession to an air supply via feed channels 17 during one revolution of the drum 1.
  • the layer 18 is coated with a dimensionally stable layer 20, by means of which the layer 18 is held on the grating 13 and which absorbs the flow and centrifugal forces directed radially outwards.
  • the layer 20 is also penetrated by the channels 19.
  • the outer surface of the layer 20 is at a distance from the drum shell 8, so that the air has free access to the entire inner surface of the drum shell 8.
  • the sound-absorbing effect of the layer 18 is increased by this distance.
  • the sound absorbing layer can consist of fibrous materials or a foam.
  • a felt is preferably used because it has a high insulating effect, is easy to process and the entrainment of fibers in the air is minimal.
  • the arrangement of the sound-absorbing layer 18 in the drum described dampens the flow noises to a great extent, the sound-absorbing layer developing a damping effect on its inside and outside.
  • the sound-absorbing layer 18 further contributes to an even pressure distribution on the inside of the drum shell 8 by the decelerates air flowing in laterally through the supply channels 17 at a comparatively high flow rate and deflects them via the channels 19 with a balanced pressure in the direction of the drum jacket 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
EP89113858A 1988-08-10 1989-07-27 Luftkissentrommel für Bogendruckmaschinen Expired - Lifetime EP0354415B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89113858T ATE82556T1 (de) 1988-08-10 1989-07-27 Luftkissentrommel fuer bogendruckmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827071A DE3827071A1 (de) 1988-08-10 1988-08-10 Luftkissentrommel fuer bogendruckmaschinen
DE3827071 1988-08-10

Publications (3)

Publication Number Publication Date
EP0354415A2 EP0354415A2 (de) 1990-02-14
EP0354415A3 EP0354415A3 (en) 1990-06-13
EP0354415B1 true EP0354415B1 (de) 1992-11-19

Family

ID=6360550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113858A Expired - Lifetime EP0354415B1 (de) 1988-08-10 1989-07-27 Luftkissentrommel für Bogendruckmaschinen

Country Status (6)

Country Link
US (1) US5007342A (ja)
EP (1) EP0354415B1 (ja)
JP (1) JPH0288240A (ja)
AT (1) ATE82556T1 (ja)
DE (2) DE3827071A1 (ja)
ES (1) ES2035998T3 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4122792C2 (de) * 1991-07-10 1994-09-08 Roland Man Druckmasch Luftkissentrommel für Bogendruckmaschinen
DE4214604A1 (de) * 1992-05-08 1993-11-11 Roland Man Druckmasch Vorrichtung zum Transport von Bogen innerhalb einer Druckmaschine
US5842412A (en) * 1997-03-07 1998-12-01 Bba Nonwovens Simpsonville, Inc. Anti-marking covering for printing press transfer cylinder
DE19845214A1 (de) * 1998-10-01 2000-04-06 Heidelberger Druckmasch Ag Druckmaschinenzylinder, insbesondere Gegendruckzylinder für eine Bogenrotationsmaschine
US8714725B2 (en) 2011-11-10 2014-05-06 Xerox Corporation Image receiving member with internal support for inkjet printer
JP6642253B2 (ja) * 2016-05-09 2020-02-05 トヨタ紡織株式会社 内燃機関のエアクリーナ
WO2018195469A2 (en) * 2017-04-20 2018-10-25 Actega North America Technologies, Inc. Label application systems

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561043B1 (de) * 1967-03-16 1970-03-05 Roland Offsetmaschf Auslegertrommel
US4297794A (en) * 1977-08-02 1981-11-03 Ingersoll-Rand Company Paper sheet dryer
US4142661A (en) * 1977-09-21 1979-03-06 International Business Machines Corporation Differential flow guiding air bearing
US4300714A (en) * 1980-01-17 1981-11-17 Beloit Corporation Method and apparatus for silencing of webs
JPS56164897A (en) * 1980-05-22 1981-12-18 Tee Shii Shii Kk Drum type automatic drawing instrument
US4506841A (en) * 1982-09-29 1985-03-26 Kent Corporation Arbor for a strip accumulator
DE3328451A1 (de) * 1983-08-06 1985-02-21 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Abschmierfreie umfuehrtrommel fuer bogentotationsdruckmaschinen
DE3347886A1 (de) * 1983-08-06 1985-05-30 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Abschmierfreie umfuehrtrommel fuer bogenrotationsdruckmaschinen
DE3422443C2 (de) * 1984-06-16 1989-11-23 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Folie für bogenführende Zylinder und Trommeln in Rotations-Offsetdruckmaschinen
JPS6147264A (ja) * 1984-08-13 1986-03-07 ハイデルベルカ−　ドルツクマシ−ネン　アクチエンゲゼルシヤフト 枚葉紙輪転印刷機における接触汚損防止型の紙巻き送り胴
DE3607371C1 (de) * 1986-03-06 1987-08-20 Hilmar Vits Vorrichtung zum schwebenden Fuehren von Materialbahnen mittels eines gasfoermigen oder fluessigen Mediums
US4919319A (en) * 1986-06-06 1990-04-24 Ford John W Contactless web support guide
US4824002A (en) * 1986-06-06 1989-04-25 Ford John W Contactless web support guide

Also Published As

Publication number Publication date
JPH0288240A (ja) 1990-03-28
ATE82556T1 (de) 1992-12-15
US5007342A (en) 1991-04-16
DE3827071C2 (ja) 1991-05-02
DE58902751D1 (de) 1992-12-24
EP0354415A2 (de) 1990-02-14
ES2035998T3 (es) 1993-05-01
DE3827071A1 (de) 1990-02-15
EP0354415A3 (en) 1990-06-13

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