EP0016938B1 - Bogentransporttrommel an Rotationsdruckmaschinen - Google Patents

Bogentransporttrommel an Rotationsdruckmaschinen Download PDF

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Publication number
EP0016938B1
EP0016938B1 EP80100684A EP80100684A EP0016938B1 EP 0016938 B1 EP0016938 B1 EP 0016938B1 EP 80100684 A EP80100684 A EP 80100684A EP 80100684 A EP80100684 A EP 80100684A EP 0016938 B1 EP0016938 B1 EP 0016938B1
Authority
EP
European Patent Office
Prior art keywords
sheet
cylinder
blowing
outer face
air
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
Application number
EP80100684A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0016938A1 (de
Inventor
Willi Jeschke
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
Priority to AT80100684T priority Critical patent/ATE2408T1/de
Publication of EP0016938A1 publication Critical patent/EP0016938A1/de
Application granted granted Critical
Publication of EP0016938B1 publication Critical patent/EP0016938B1/de
Expired 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
    • 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

Definitions

  • the invention relates to a sheet transport drum on rotary printing machines, in which the sheets to be transported rest on an air cushion generated by means of blown air between the drum shell and the sheet.
  • a thin air cushion is produced on the drum circumference, on which the sheet is to be placed in order to prevent smearing of the printing ink.
  • the known sheet transport drum is double-walled and has a cover made of porous and air-permeable material. If blown air is now blown into the cavity between the double walls, it emerges through the air-permeable cover and creates the air cushion under the sheet to be transported.
  • the known sheet transport drum has the disadvantage that it is complex to manufacture and requires large amounts of blown air to generate the air cushion. In addition to the cost of the facility itself, it has a high energy requirement and has an unfavorable effect on the indoor climate in the print shop. With the large amount of air required, there is also an undesirable supply of heat to the machine, which results in paper warping. It is therefore necessary to provide additional cooling and humidifying devices for the blown air, which increases the cost.
  • Sheet transport drums in a similar design, in which blowing nozzles are used to carry the individual sheets, are known per se (FR-A-1 140 267), but are not used to build up an air cushion.
  • the known blowing nozzles support the depositing of a sheet on a conveyor belt and are arranged within the sheet transport drum.
  • the object of the invention is to provide a sheet transport drum with an air cushion for the sheets to be transported, which is simple and inexpensive to produce, has a low blowing air consumption, can process all paper thicknesses up to cardboard without smearing and is easy to clean and maintain.
  • blowing nozzles are provided for producing the air cushion and in that the air cushion is limited on the front edge and on the two side edges of the sheet by sealing strips provided on the drum shell.
  • a storage space is created below it, in which a dynamic pressure is generated via the blowing nozzles, from which the printed sheet is carried.
  • the sheet transport drum is designed in such a way that the air flow of the blowing nozzles is initially directed against the sealing strip provided on the front edge, as a result of which air is built up in this area and, when the sheet transport drum rotates further, the air cushion is built up between the sheet and the drum shell.
  • the blowing nozzles can be arranged outside the sheet transport drum before the sheet is taken over and blow in the direction of rotation of the sheet transport drum between the sheet and the drum jacket. It is not necessary to introduce air into the rotating drum.
  • This embodiment of the invention is characterized in particular by its simple structure and by its easy maintenance option.
  • blowing nozzles are provided on the drum jacket, which are directed against the sealing strip provided on the front edge of the sheet, are arranged on a partial length of the drum jacket, beginning at the beginning of the sheet, in accordance with the progressive drum rotation, one after the other in the area of the center at the sheet transfer be supplied with blown air and blow between the bow and drum shell.
  • An advantageous embodiment of the subject of the invention is characterized by the features of Claim 5, wherein any drum of a printing press can be formed in this way to avoid damage to the freshly printed side of the sheet, which is directed towards the drum.
  • the exemplary embodiment shown in FIG. 1 relates to a sheet-fed offset printing press with the cylinder arrangement known per se.
  • the sheet 1 is printed between the blanket cylinder 2 and the impression cylinder 3 and fed to the sheet transport drum 4 by the grippers (not shown) in the impression cylinder 3, the grippers 5 of which take over the sheet in the center between the impression cylinder 3 and the sheet transport drum 4.
  • the sheet 1 is then transferred from the sheet transport drum 4 to the grippers of the transfer drum 6, which are not shown.
  • the sheet 1 held on the sheet transport drum 4 between the gripper 5 and the gripper support rail 7 lies on an air cushion 8 which is generated between the drum jacket 9 and sheet 1 by means of blown air.
  • bias nozzles 10 are provided, which are provided in front of the control center at the sheet transfer between the printing cylinder 3 and sheet transport drum 4.
  • the air flow 11 of the blowing nozzles 10 is initially directed against the sealing strip 12 provided under the front edge of the sheet 1. This creates an air traffic jam, from which, upon further rotation of the arc t rans- port drum 4, the bubble 8 between the sheet 1 and the drum shell is built up.
  • the drum shell 9 is air-impermeable and carries one on both sides in the axial direction the sheet transport drum 4 movable sealing ring 13 (Fig. 2).
  • the radius of the drum shell 9 is designed to be smaller by the thickness of the sealing rings 13, so that the contact edge 14 for the bend 1 corresponds exactly to the theoretical drum diameter.
  • the sheet transport drum 4 is supported on both sides via its steering knuckles 15, 16 via bearings 17, 18 in the side frames 19, 20.
  • the steering knuckle 15 carries a spur gear 21 for driving the sheet transport drum 4.
  • blow pipe 22 which extends over the length of the drum shell 9 and which is fastened to the side frames via the holders 23.
  • the blow nozzles 10, which generate a fan-shaped air flow over the arc length, are in turn attached to the blow tube 22.
  • the blowing air is supplied to the blow pipe 22 via a hose 24.
  • FIG. 3 shows a larger section through a side sealing ring 13, in which the sheet 1 rests on the support edge 14. This is particularly advantageous with thick sheet material.
  • the embodiment according to FIG. 4 shows, in a modification, a sealing ring 25, in which the air cushion 8 is sealed on the end face of the sheet 1.
  • the air cushion in the front area of the sheet 1 to be transported is sealed on the sealing strip 12.
  • This version can, for. B. with very thin sheet material.
  • FIG. 5 shows a sheet transport drum 4 'at the end of the printing press, from which the sheets are fed to the delivery via a chain guide 26.
  • the sheet transport drum 4 carries a sprocket 27 on each side of the drum shell 9, via which the chains 26 are guided.
  • the grippers 5 and the gripper support rail 7 are attached to the chains 26.
  • the mode of operation of the blown air does not differ from the previously described version.
  • sheet guide plates 28 can be used in the embodiments shown Sheet transport drum 4, 4 'can be assigned, which are attached to a cross member 29. The sheet guide plate 28 prevents the sheet end from falling down in an uncontrolled manner.
  • blow nozzles 31 are provided on the drum jacket, which are directed against the sealing strip 12 provided on the front edge of the sheet 1 and on a partial length of the drum jacket 30, starting at the beginning of the sheet are arranged.
  • these are four rows of blowing nozzles 31.
  • the blowing nozzles 31 penetrate the drum body up to the bore of a hollow axis 32 which rotates on an axis 33 with the sheet transport drum 4.
  • a longitudinal chamber 34 is provided in the axis 33, through which the blown air is fed to the nozzles 31.
  • the blowing nozzles 31 located in the area of the central to the pressure cylinder 3 at the sheet takeover come into contact with the longitudinal chamber 34, so that they blow in blowing air for this period of time between the drum jacket 30 and sheet 1 and thereby build up the air cushion.
  • the row of blowing nozzles 31 seen in the direction of rotation of the drum and moved in the area of the central unit to the rubber cylinder 3 is supplied with blowing air. This maintains the air cushion, whereby the lowest blown air consumption is required.
  • the blown air is supplied axially outside the side frames in a known manner.
  • the air cushion is sealed off from the sheet 1 to be transported on the sealing strip 12 and on both sides by the sealing rings 13, 25 which can be adjusted to the respective format to be processed on the sheet end faces.
  • the blowing air is switched on cyclically when the sheet 1 is taken over and switched off at the time when the sheet end leaves the printing nip of the printing cylinder 3 arranged in front of the sheet transport drum 4, 4 '.
  • the period of the air supply is shown hatched.
  • the blowing air is switched on at a.
  • b the upper picture or according to c in the lower picture.
  • the format-dependent adjustment range for switching off the blown air is shown with d. Both at b and at c the sheet end just leaves the printing gap between blanket cylinder 2 and printing cylinder 3.
  • the period of time for switching on the blown air can be carried out mechanically, as z. B. is shown in Fig. 2.
  • a pin 35 is fastened on the steering knuckle 15, on which a rotary valve 36 is mounted.
  • two disks 38, 39 provided with air openings 37 are attached to the pin 35, the air openings 37 of which are provided for the maximum blowing time.
  • the blown air supplied in the hose 40 can be controlled cyclically for certain periods of time, so that the nozzles 10 for the period of time when the sheet 1 is taken over by the grippers 5 are reached via the hose 24 Blown air is supplied to which the sheet end leaves the printing gap between the blanket cylinder 2 and the printing cylinder 3.
  • FIG. 8 Another embodiment of a control valve is shown in Fig. 8, in which the blown air is also supplied via the hose 40 and via the valve 41, the z. B. can be rotated via an actuator 42 is controllable in its blowing time.
  • the hose 24 now feeds the blowing air to the nozzles 10 for the blowing time set in each case.
  • FIG. 10 shows a top view of the control according to FIG. 9, in which the two control segments 45, 46 are rotated relative to one another, so that the blowing time has been shortened by an amount that can be set on the scale 48.
  • the valve 41 Via the contactless switch 43, the valve 41 can be controlled via the servomotor 42.
  • a plurality of switches 43 can be assigned to the control segments, each switch actuating the valve 41 for the blown air control of a sheet transport drum.
  • four switches for four sheet transport drums are thus provided within a printing press. The angularly offset arrangement of the switches arises from the fact that the sheet transfer to the four drums is not carried out simultaneously.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Discharge By Other Means (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Electric Cable Installation (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Screen Printers (AREA)
EP80100684A 1979-04-09 1980-02-11 Bogentransporttrommel an Rotationsdruckmaschinen Expired EP0016938B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80100684T ATE2408T1 (de) 1979-04-09 1980-02-11 Bogentransporttrommel an rotationsdruckmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2914362 1979-04-09
DE2914362A DE2914362C3 (de) 1979-04-09 1979-04-09 Bogentransporttrommel an Rotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0016938A1 EP0016938A1 (de) 1980-10-15
EP0016938B1 true EP0016938B1 (de) 1983-02-09

Family

ID=6067902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100684A Expired EP0016938B1 (de) 1979-04-09 1980-02-11 Bogentransporttrommel an Rotationsdruckmaschinen

Country Status (12)

Country Link
US (1) US4395949A (enrdf_load_stackoverflow)
EP (1) EP0016938B1 (enrdf_load_stackoverflow)
JP (2) JPS55140562A (enrdf_load_stackoverflow)
AR (1) AR228344A1 (enrdf_load_stackoverflow)
AT (1) ATE2408T1 (enrdf_load_stackoverflow)
AU (1) AU532836B2 (enrdf_load_stackoverflow)
CA (1) CA1129245A (enrdf_load_stackoverflow)
DE (2) DE2914362C3 (enrdf_load_stackoverflow)
DK (1) DK144815C (enrdf_load_stackoverflow)
ES (1) ES488998A1 (enrdf_load_stackoverflow)
NO (1) NO150626C (enrdf_load_stackoverflow)
ZA (1) ZA802030B (enrdf_load_stackoverflow)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040389A1 (de) * 1980-10-25 1982-05-27 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogenoffset-rotationsdruckmaschine mit mindestens einem druckwerk fuer schoen- und widerdruck
DE3040388A1 (de) * 1980-10-25 1982-10-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bogenoffsetdruckmaschine mit mindestens einem druckwerk fuer schoen- und widerdruck
JPS5919155A (ja) * 1982-07-23 1984-01-31 Komori Printing Mach Co Ltd 反転機構付枚葉輪転印刷機の圧胴装置
JPS59140835U (ja) * 1983-03-14 1984-09-20 株式会社小森コーポレーション 枚葉輪転印刷機の送紙案内装置
JPS59157823U (ja) * 1983-04-07 1984-10-23 株式会社小森コーポレーション 枚葉輪転印刷機の紙ガイド装置
DD229359A1 (de) * 1984-11-27 1985-11-06 Polygraph Leipzig Bogenleiteinrichtung an bogenfuehrungszylindern von druckmaschinen
DE3602084A1 (de) * 1986-01-24 1987-07-30 Heidelberger Druckmasch Ag Bogenueberfuehrtrommel zwischen den druckwerken von rotationsdruckmaschinen
US4919048A (en) * 1986-08-01 1990-04-24 Tyler Jack D Apparatus for preventing contact of wet ink sheets with printing press delivery mechanisms and for drying said wet ink
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
DE3920730A1 (de) * 1989-06-24 1991-01-10 Heidelberger Druckmasch Ag Vorrichtung zur bogenglaettung am druckzylinder in einer bogenrotationsdruckmaschine
US5016833A (en) * 1990-03-16 1991-05-21 Xerox Corporation Document roll-up system
US5042384A (en) * 1990-04-30 1991-08-27 Howard W. DeMoore Anti-marking method and apparatus for use with perfector cylinders of rotary sheet-fed printing presses
DE4223555A1 (de) * 1991-08-12 1993-02-18 Koenig & Bauer Ag Trommel zum transportieren von bogen
DE4210327A1 (de) * 1992-03-30 1993-10-07 Koenig & Bauer Ag Bogenwendeeinrichtung in einer Rotationsdruckmaschine
DE4342203C3 (de) * 1993-12-10 1999-01-14 Kba Planeta Ag Einrichtung zum Einwirken auf Bogen in einer Bogenrotationsdruckmaschine
DE4434778C1 (de) * 1994-09-29 1995-11-30 Roland Man Druckmasch Bogenführungsmodul für eine Wendeeinrichtung in einer für Schöndruck oder Schön- und Wiederdruck einsetzbaren Rotationsdruckmaschine
DE4435337B4 (de) * 1994-10-01 2005-12-15 Koenig & Bauer Ag Verfahren und Einrichtung zur Bogenkontrolle
DE4436955C2 (de) * 1994-10-15 1999-11-11 Roland Man Druckmasch Vorrichtung zum berührungslosen Bogentransport
DE19546046A1 (de) * 1995-12-09 1997-06-12 Heidelberger Druckmasch Ag Bogenführsystem für eine Druckmaschine
US5809885A (en) * 1996-09-09 1998-09-22 Druckmaschinenwerk Planeta Blower for printing presses for assisting in the guidance of sheets
US5836581A (en) * 1996-10-11 1998-11-17 Barco Graphics N.V. Device and method for loading a sheet-like medium
DE19713361B4 (de) * 1997-03-29 2007-12-27 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum abschmierfreien Führen eines bedruckten Bogens auf einem bogenführenden Zylinder einer Druckmaschine, insbesondere auf einer Wendetrommel einer Bogenrotations-Offsetdruckmaschine, im Schöndruckbetrieb
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
DE19940534B4 (de) * 1998-10-14 2009-09-03 Heidelberger Druckmaschinen Ag Druckmaschine mit einer Fingerschutzeinrichtung
DE10102733B4 (de) * 2000-02-18 2010-01-07 Heidelberger Druckmaschinen Ag Einrichtung zur Überführung eines Bogens
JP4494577B2 (ja) * 2000-03-17 2010-06-30 株式会社小森コーポレーション 両面印刷機のシート状物案内装置
DE10033838A1 (de) * 2000-07-12 2002-01-24 Roland Man Druckmasch Einrichtung zur Bogenführung
DE10150842B4 (de) * 2000-11-15 2013-11-21 Heidelberger Druckmaschinen Ag Speichereinrichtung zur Wendung bogenförmigen Materials
DE10158486A1 (de) * 2001-01-05 2002-07-11 Heidelberger Druckmasch Ag Einrichtung zur Trennung benachbarter flächiger Exemplare
CA2392429C (en) * 2001-07-23 2006-10-10 Mitsubishi Heavy Industries, Ltd. Sheet-fed press and intermediate cylinder for sheet-fed press
DE10310690A1 (de) * 2002-04-12 2003-10-30 Heidelberger Druckmasch Ag Bogenführungseinrichtung in einer bogenverarbeitenden Maschine
DE10332212A1 (de) * 2003-07-16 2005-02-24 Koenig & Bauer Ag Vorrichtungen zur Qualitätsprüfung von Prüfkörpern und ein Verfahren zum Prüfen der Qualität von Bogen
JP2006175862A (ja) 2004-12-21 2006-07-06 Heidelberger Druckmas Ag 枚葉紙を、印刷技術機械内を周期的に搬送する方法
US9427994B2 (en) * 2007-04-26 2016-08-30 Hewlett-Packard Development Company, L.P. Apparatus and method of tensioning print media

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Publication number Priority date Publication date Assignee Title
DE728119C (de) * 1935-08-21 1942-11-20 Planeta Druckmaschinenwerk Ag Bogenausfuehrvorrichtung fuer Druckmaschinen
FR1140267A (fr) * 1955-01-21 1957-07-18 Nebiolo Spa Cylindre inverseur avec tubes souffleurs incorporés, pour presse à imprimer avec arrêt du cylindre
US2931647A (en) * 1956-01-20 1960-04-05 Papa Paolo Sheet reversing cylinder with blowing tubes for stop-cylinder printing machines
US3341195A (en) * 1965-03-29 1967-09-12 Harris Intertype Corp Sheet handling apparatus
US3334897A (en) * 1965-05-25 1967-08-08 Richard E Sharkey Method and apparatus for controlling curvature in printed sheets being withdrawn from an impression cylinder
US3363520A (en) * 1965-10-21 1968-01-16 West Virginia Pulp & Paper Co Means for collecting and transferring sheet material
DE1561043B1 (de) * 1967-03-16 1970-03-05 Roland Offsetmaschf Auslegertrommel
CH475090A (de) * 1968-01-25 1969-07-15 Mirax Ag Vorrichtung zum schmierfreien Ausführen von bedruckten Bogen aus Kleinoffsetmaschinen
DE2354418C3 (de) * 1973-10-31 1980-04-17 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenübergabetrommel für Druckmaschinen
DE2550721C3 (de) * 1975-11-12 1986-07-31 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Übergabetrommel an einer Druckmaschine

Also Published As

Publication number Publication date
ATE2408T1 (de) 1983-03-15
CA1129245A (en) 1982-08-10
US4395949A (en) 1983-08-02
NO150626C (no) 1984-11-21
DE2914362B2 (de) 1981-09-03
DK140880A (da) 1980-10-10
ES488998A1 (es) 1980-09-16
JPS58112544U (ja) 1983-08-01
DK144815C (da) 1982-11-01
NO800990L (no) 1980-10-10
AU532836B2 (en) 1983-10-13
JPS55140562A (en) 1980-11-04
JPH0230286Y2 (enrdf_load_stackoverflow) 1990-08-15
DE2914362A1 (de) 1980-10-16
EP0016938A1 (de) 1980-10-15
DK144815B (da) 1982-06-14
DE3061842D1 (en) 1983-03-17
ZA802030B (en) 1981-04-29
DE2914362C3 (de) 1984-12-20
AR228344A1 (es) 1983-02-28
NO150626B (no) 1984-08-13
AU5582080A (en) 1980-10-16

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