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EP1010525B1 - Dispositif de guidage de feuilles pour une machine d'impression - Google Patents

Dispositif de guidage de feuilles pour une machine d'impression Download PDF

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Publication number
EP1010525B1
EP1010525B1 EP99123746A EP99123746A EP1010525B1 EP 1010525 B1 EP1010525 B1 EP 1010525B1 EP 99123746 A EP99123746 A EP 99123746A EP 99123746 A EP99123746 A EP 99123746A EP 1010525 B1 EP1010525 B1 EP 1010525B1
Authority
EP
European Patent Office
Prior art keywords
wall
valve element
openings
nozzles
guide device
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.)
Revoked
Application number
EP99123746A
Other languages
German (de)
English (en)
Other versions
EP1010525A1 (fr
Inventor
Uwe Püschel
Stefan Hartmann
Arno Wührl
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7891096&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1010525(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 EP1010525A1 publication Critical patent/EP1010525A1/fr
Application granted granted Critical
Publication of EP1010525B1 publication Critical patent/EP1010525B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B65H29/52—Stationary guides or smoothers
    • 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

Definitions

  • the invention relates to a sheet guiding device for a printing machine with one along the sheet path extending guide surface and provided in the guide surface Nozzles that can be charged with blown air or suction air are.
  • Sheet guiding devices of the type specified should be in Printing machines the printed sheets when transporting one printing unit to the next or to the delivery without greasing to lead. To do this, the arches are applied with blown air and suction air when passing through the transport path stabilized and through the formation of suitable air cushions prevented from touching the guides.
  • a sheet guiding device in the sheet transport direction seen in the inlet area of a guide surface arranged nozzles depending on the processed Printing material with either suction air or blown air acted upon and the nozzles between the inlet area and the outlet area of the guide surface arranged guide zone are blown with air, at least some of the nozzles blow the air essentially tangentially leads to the surface of the guide surface.
  • the Guiding surfaces a different, the respective air requirement have adapted area coverage with nozzles.
  • the Air is supplied to the nozzles via fans, whose Speed for setting the floating guide in blowing mode and to adjust the frictional force of the bow on the guide surfaces is adjustable in suction mode. For reversing blowing operation the fans can also be operated in suction mode their direction of rotation can be switched.
  • the invention has for its object in a sheet guide the strength of the blown air or suction air, even in narrowly restricted zones Basis weight of the substrates, the print subject and the To be able to adjust printing speed.
  • this object is achieved in that the Size of the passage cross section of at least individual nozzles is adjustable.
  • the invention enables zone by zone individual adjustment of the blown air or suction air flow and thus an optimal adaptation of the sheet guide to the given operating situations without it Large number of fans with adjustable speed is required.
  • the nozzles through openings in a the guide surface forming wall and in one facing away from the guide surface Side of the wall arranged valve element is formed be in one or more directions of extension of the Wall is movable relative to the wall, being in one position of the valve element, the openings in the wall and in the valve element at least partially overlap each other.
  • the Openings in the wall and in the valve element can be congruent and arranged so that by moving the valve element around a certain one Amount the size of the passage cross section of all of that Valve element formed nozzles experience the same change can.
  • Interacting openings in the wall and in the Valve elements can also differ in size and shape deviate so that with a certain movement of the valve element, the nozzles formed by the openings different changes in their passage cross-section Experienced.
  • For zone-by-zone adjustment of the blowing or suction air to the requirements of the sheet guide can also Uneven distribution of openings over the guide surface his.
  • valve element instead of a single valve element according to the invention also two or more valve elements arranged one above the other be that have openings that are at least in one Position of the valve elements with each other and with Overlap the openings in the wall.
  • the nozzle design according to the invention is suitable for both flat as well as for curved guide surfaces. Is the guide surface and thus both the wall and the valve element just executed, so instead of a linear adjustment movement also a rotation of the valve element by one Vertical axis should be appropriate.
  • an air box For connecting the nozzles to a blast air or suction air source can be on the side of the Wall an air box can be attached, the interior of which the wall is limited and which receives the valve element.
  • the air box can have guides for the valve element and with axial fans to supply air to the nozzles be equipped.
  • the design of the nozzles according to the invention enables a flow-optimized arrangement in a simple manner linked to a blowing or suction pressure level regulation through a change in the passage cross-section that is only partially possible of the nozzles.
  • a linear or rotating Movement of the valve element can exceed the pressure level the guiding surface completely or partially to the requirements adapted to the sheet guidance and by uniform pressure or vacuum distribution a better sheet guidance can be achieved.
  • the printing press shown schematically in FIG. 1 has several in series arranged printing units 1, of which each of the plate cylinder 2, the blanket cylinder 3 and the double-large impression cylinder 4 are shown. Between the sheets are transported to the printing units each via transfer drums 5 or if possible for turning, there is a turning drum 6. From Printing cylinders of the last printing unit are through the sheets a chain gripper system 7 of a boom 8 to a boom stack 9 transported. On the transfer drums 5, the Reversing drum 6 and the chain gripper system 7 are each Sheet guiding devices 10 arranged for a Lubrication-free sheet guidance of the printed sheets ensures. Depending on the course of the Arch transport path curved or flat guide surfaces 11 which the arches are moved along. By feeding or aspirating air via arranged in the guide surfaces 11 Nozzle-free sheet guidance is achieved.
  • FIG. 2 to 4 An embodiment of a sheet guiding device 10 with flat guide surface 11 is shown in Figures 2 to 4.
  • This sheet guiding device 10 consists of a for example, a flat wall made of sheet metal 12, the top of which forms the guide surface 11.
  • the wall 12 has a flow-optimized arrangement Number of circular holes 13.
  • On the bottom of the Wall 12 has an air box 14 attached to it.
  • At the bottom of the Air box 14 there are several axial fans 15, through which either air is pressed into the air box 14 or can be sucked out of this.
  • In the air box 14 is directly under the wall 12 on guide rails 16th a plate-shaped, rectangular valve element 17 in the direction of the double arrow 18 movably arranged.
  • the valve element 17 has the same arrangement and size like the wall 12 on circular holes 19 in the in Figure 2 shown position of the valve element 17 itself completely overlap the holes 13 in the wall 12.
  • the holes 13 in the wall 12 and the holes 19 in the valve element 17 together form nozzles 20 through which the air emerge from or into the interior of the air box 14 can be sucked in.
  • the passage cross section of this Nozzles 20 has a complete overlap Holes 13 and 19 its maximum size.
  • valve element 17 With the help of a motor 21 in the direction of the double arrow 18 be adjusted.
  • the holes 19 are opposite the holes 13 shifted, as illustrated in Figure 4.
  • the holes 13 and 19 overlap in the position shown in FIG of the valve element 17 only partially, so that the passage cross section the nozzle 20 is significantly reduced. In this way, the pressure level of the air in the space between the guide surface 11 and one on this passed arches to the needs of arch guidance be adjusted.
  • valve element 17 only adjusted in one direction.
  • the downsizing of the passage cross section is therefore 20 for all nozzles equal.
  • the valve element 17 is additionally one axis turned perpendicular to the guiding surface, so yield to the different nozzle cross-sections. In this way it is also possible to set the pressure level above to influence the guide surface 11 partially differently.
  • FIG. 5 Another possibility for partially different attitudes of the passage cross section of the nozzles 20 is with the hole pattern of a valve element 17 shown in FIG. 5 allows.
  • holes 19 in their Size and arrangement in one position of the valve element 17 are congruent with holes 13 in the wall 12, holes 22 provided a larger cross section and partially another, namely oval shape. This gives itself when the valve element 17 moves relative to the Wall 12 at the holes 19 another change in the passage cross section than at holes 22. That way can control the blowing or suction air zone by zone be designed differently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (10)

  1. Dispositif de guidage de feuilles pour une machine d'impression comportant une surface de guidage qui s'étend le long de la voie desdites feuilles et sur laquelle sont guidées sans contact lesdites feuilles au moyen d'un système de maintien de feuilles, ainsi que des buses qui sont prévues dans la surface de guidage et qui peuvent être alimentées par de l'air de soufflage ou par de l'air d'aspiration,
    caractérisé en ce que la grandeur de la section de passage d'au moins des buses individuelles (20) est réglable.
  2. Dispositif de guidage de feuilles selon la revendication 1, caractérisé en ce que les buses (20) sont formées par des ouvertures (14, 19) dans une paroi (12) formant la surface de guidage (11) et dans un élément de soupape (17) agencé du côté de la paroi (12) opposé à la surface de guidage (11 ), ledit élément de soupape étant mobile par rapport à la paroi (12) dans une ou plusieurs directions de celle-ci, de sorte que, pour une position de l'élément de soupape, les ouvertures (13, 19) dans la paroi (12) et dans l'élément de soupape (17) sont au moins partiellement en regard.
  3. Dispositif de guidage de feuilles selon la revendication 2, caractérisé en ce que les ouvertures (13, 19) dans la paroi (12) et dans l'élément de soupape (17) sont agencées et formées dans une position de recouvrement de l'élément de soupape (17).
  4. Dispositif de guidage de feuilles selon au moins la revendication 2,
    caractérisé en ce que les ouvertures coopérantes (13, 19) dans la paroi (12) et dans l'élément de soupape (17) peuvent cependant également différer en grandeur et en forme les unes des autres.
  5. Dispositif de guidage de feuilles selon au moins la revendication 2,
    caractérisé en ce que la répartition des ouvertures (13, 19) sur la surface de guidage (11) n'est pas uniforme.
  6. Dispositif de guidage de feuilles selon au moins la revendication 2,
    caractérisé en ce que l'élément de soupape (17) peut tourner par rapport à la paroi (12).
  7. Dispositif de guidage de feuilles selon au moins la revendication 2,
    caractérisé en ce que deux ou plusieurs éléments de soupape sont agencés l'un au-dessus de l'autre, les ouvertures de ces éléments de soupape étant en regard les unes des autres et en regard des ouvertures (13) de la paroi (12) dans au moins une position desdits éléments de soupape.
  8. Dispositif de guidage de feuilles selon au moins la revendication 2,
    caractérisé en ce que, du côté de la paroi (12) opposé à la surface de guidage (11), est rapportée une boíte d'air (14) qui reçoit l'élément de soupape (17) et dont le volume intérieur est délimité par la paroi (12).
  9. Dispositif de guidage de feuilles selon au moins la revendication 2,
    caractérisé en ce que la boíte d'air (14) comporte des guidages (16) pour l'élément de soupape (17).
  10. Dispositif de guidage de feuilles selon au moins la revendication 2,
    caractérisé en ce que la boíte d'air (14) comporte des ventilateurs axiaux (15) pour l'alimentation en air des buses (20).
EP99123746A 1998-12-15 1999-11-30 Dispositif de guidage de feuilles pour une machine d'impression Revoked EP1010525B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19857745A DE19857745A1 (de) 1998-12-15 1998-12-15 Bogenführungseinrichtung für eine Druckmaschine
DE19857745 1998-12-15

Publications (2)

Publication Number Publication Date
EP1010525A1 EP1010525A1 (fr) 2000-06-21
EP1010525B1 true EP1010525B1 (fr) 2004-01-02

Family

ID=7891096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99123746A Revoked EP1010525B1 (fr) 1998-12-15 1999-11-30 Dispositif de guidage de feuilles pour une machine d'impression

Country Status (3)

Country Link
EP (1) EP1010525B1 (fr)
AT (1) ATE257083T1 (fr)
DE (2) DE19857745A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131607A1 (de) 2000-07-28 2002-02-07 Heidelberger Druckmasch Ag Ausleger einer flächige Bedruckstoffe verarbeitenden Maschine
DE10042888A1 (de) * 2000-08-31 2002-03-14 Heidelberger Druckmasch Ag Bogenleiteinrichtung
DE10133633A1 (de) 2000-08-31 2002-03-14 Heidelberger Druckmasch Ag Leit-und Tragelemente mit gedrosselter Blasluft
US7513499B2 (en) 2004-05-04 2009-04-07 Heidelberger Druckmaschinen Ag Sheet brake using a partitioned blower nozzle array
WO2007065673A1 (fr) * 2005-12-07 2007-06-14 Goller Textilmaschinen Gmbh Buse reglable
JP5543988B2 (ja) 2012-02-21 2014-07-09 富士フイルム株式会社 用紙搬送装置及びインクジェット記録装置
DE102017217660A1 (de) 2016-11-02 2018-05-03 Heidelberger Druckmaschinen Ag Bogentransportelement mit integriertem Absperrschiebersystem für Saugöffnungen
DE102022127685A1 (de) 2022-10-20 2024-04-25 Koenig & Bauer Ag Trag- oder Leitvorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2707170C2 (de) * 1977-02-18 1982-07-15 Siemens AG, 1000 Berlin und 8000 München Pneumatische Bremse für einen Aufzeichnungsträger
AT362227B (de) * 1979-07-02 1981-04-27 Andritz Ag Maschf Materialbahntrockner
DE3422413A1 (de) * 1984-06-16 1985-12-19 Werner H.K. Peters Maschinenfabrik Gmbh, 2000 Hamburg Vorrichtung zur erzeugung eines ueber- oder eines unterdrucks auf eine in laengsrichtung gefoerderte papierbahn, insbesondere in einer wellpappenanlage
DE19549589B4 (de) * 1995-02-01 2005-11-17 Heidelberger Druckmaschinen Ag Bogenleiteinrichtung für Druckmaschinen
US5634636A (en) * 1996-01-11 1997-06-03 Xerox Corporation Flexible object handling system using feedback controlled air jets

Also Published As

Publication number Publication date
EP1010525A1 (fr) 2000-06-21
DE19857745A1 (de) 2000-06-29
ATE257083T1 (de) 2004-01-15
DE59908193D1 (de) 2004-02-05

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