EP0796734B1 - Cylindre de transfert de feuilles pour machine à imprimer - Google Patents

Cylindre de transfert de feuilles pour machine à imprimer Download PDF

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Publication number
EP0796734B1
EP0796734B1 EP96118805A EP96118805A EP0796734B1 EP 0796734 B1 EP0796734 B1 EP 0796734B1 EP 96118805 A EP96118805 A EP 96118805A EP 96118805 A EP96118805 A EP 96118805A EP 0796734 B1 EP0796734 B1 EP 0796734B1
Authority
EP
European Patent Office
Prior art keywords
drum
sheet
sheet guiding
cover
interior
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
EP96118805A
Other languages
German (de)
English (en)
Other versions
EP0796734A1 (fr
Inventor
Hanns-Otto Haas
Norbert Kreuzer
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
Priority claimed from DE19611590A external-priority patent/DE19611590C1/de
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0796734A1 publication Critical patent/EP0796734A1/fr
Application granted granted Critical
Publication of EP0796734B1 publication Critical patent/EP0796734B1/fr
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
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/041—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands and introducing into a pile
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/20—Avoiding or preventing undesirable effects
    • B65H2601/25—Damages to handled material
    • B65H2601/251—Smearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a sheet-guiding drum for a printing press for lubrication-free sheet transport according to the preamble of claim 1.
  • a sheet-guiding drum of this type is known from DE 3 347 886 C2.
  • the drum body has an outer surface made of a porous, air-permeable material An air cushion created on the outer surface prevents the in Direction of sheet transported, printed sheets, the air from the inside of the Drum is guided on the surface.
  • a sheet-guiding drum is known from DE 4 223 839 C1, which also has through openings in its lateral surface. Blown air is generated inside the drum by a rotatably mounted coaxial to the cylinder axis Radial fan, which is arranged on the end face in the side walls of the drum Openings are connected to the ambient air. The radial fan has one its speed can be regulated independently of the sheet-guiding drum Drive.
  • the object of the invention is to develop a sheet-guiding drum with little structural effort a smear-free sheet guidance of printed sheets guaranteed. This is solved by the training features of the main claim. Further training results from the subclaims.
  • the sheet-guiding drum ensures smear-free transport of printed and / or lacquered sheets.
  • the one from an upstream Printing machine cylinder comes with the printed side of the
  • the outer surface of the sheet-guiding drum is kept away by an air cushion.
  • the Drum is suitable for a take-up drum arranged in the boom, as well as Transfer drum between printing units, coating units or Processing stations or a combination thereof.
  • a sheet-guiding drum 1 as a take-up drum in the boom sheet-processing printing machine arranged.
  • the boom is known per se Formed by a chain conveyor system 4 rotating in the direction of sheet travel 9 the gripper systems 3 for the transport of sheets 2 to be laid out are arranged.
  • the Drum 1 is in the sheet running direction 9 belonging to a coating unit Printing press cylinder 10 upstream.
  • a sheet guiding device 8 arranged, which either with blowing or suction air is acted upon.
  • a sheet brake unit 7 is arranged in front of a delivery stack 5, which of the speed deceleration of the sheet 2 to be deposited on the Boom stack 5 is used.
  • the sheet-guiding drum 1 is a transfer drum between two Printing units arranged, a printing unit by a plate cylinder 12, a Blanket cylinder 11 and a printing press cylinder 10 is formed.
  • a printing unit by a plate cylinder 12 a Blanket cylinder 11 and a printing press cylinder 10 is formed.
  • Fig. 3 shows the sheet-guiding drum 1 as a removal drum with a frame mounted shaft 14.
  • the fans 15 are fixed to the frame assigned, which are arranged symmetrically distributed.
  • the fans 15 are with a electrical power supply coupled in terms of circuitry.
  • the rotatable one Drum casing 13 is provided with openings 23 for the escape of air.
  • Towards the Boom riser is in the non-leading area of the drum 1 within the Drum shell 13 to improve efficiency, a closed baffle 22nd arranged fixed to the frame.
  • the drum jacket 13 has a plurality of openings 23.
  • the drum jacket 13 can also be made of porous material or in combination with Openings and porous material can be formed.
  • the drum 1 is designed as a removal drum.
  • the shaft 14 is mounted in a frame 6 arranged on both sides.
  • a connector 16 is attached to the frame 6 and carries a partition plate 17.
  • the partition plate 17 extends essentially over the side surfaces of the drum 1. Facing the frame 6, the fans 15 on the partition plate 17 are fixed to the frame arranged.
  • a sprocket 19 is fixed on the rotatable shaft 14 with a flange 21 adjacent to the partition plate 17.
  • a chain 18 of the chain conveyor system 4 is guided over the chain wheel 19, to which the gripper systems 3 are fastened in a known manner.
  • the drum jacket 13 is attached to the sprocket 19 on each side of the frame. Partition plate 17 and sprocket 19 have openings 20 so that the air generated by fans 15 is connected to the hollow interior of the drum 1.
  • the training is not limited to those with rotating gripper systems 3 cooperating acceptance drum limited. Rather, the drum 1 can also be used as Transfer drum can be formed with gripper bridges fixedly arranged on the circumference.
  • the drum jacket 13 supports when training as a transfer drum on the shaft 14.
  • the bulkhead 17 with Fans 15 are arranged fixed to the frame analogous to the design as a take-up drum.
  • a Baffle 22 is in the non-sheet leading area of the transfer drum in the upper Circle sector (Fig. 2) arranged.
  • a drying function for the Arch can be achieved by means of the drum 1.
  • a heating element 24 firmly arranged on the partition plate 17 in front of the sprocket 19.
  • the heating element 24 is For example, as a heating wire element, which circuitry with the Machine control is coupled and can be activated if required.
  • a sheet 2 is transferred from a printing press cylinder 10 to the drum 1.
  • the fans 15 built up a rotating air cushion on the drum casing 13 so that the sheet is guided on the drum casing 13 without contact.
  • the sheet guide devices 8 assigned to drum 1 are supplied with blowing air (with perfect and reverse printing) or with suction air (with fine printing).
  • the sheet 2 is deflected by the drum 1 and, if it is designed as a take-up drum, is guided from the gripper system 3 to the delivery stack 5.
  • the sheet 2 guided in the gripper closure is transferred to a printing press cylinder 10 arranged downstream in the sheet travel direction 9.
  • the drum jacket 13 rotates while the partition plates 17 are fixed with fans 15. There is a small gap between the drum jacket 13 and the bulkhead 17.
  • the drum casing 13 is designed as a take-up drum, it is driven by the rotating sprocket 19.
  • it is designed as a transfer drum, it is driven by the machine drive and the shaft 14.
  • the drying time can be shortened by switching on the heating elements 24.
  • the fed to the drum 1 Air is heated and emerges from the openings 23 of the drum shell 13.
  • the fans 15 are switched to blown air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (5)

  1. Tambour de guidage de feuilles pour une machine d'impression, comportant une enveloppe de tambour munie d'ouvertures et des moyens pour amener de l'air de soufflage à l'intérieur du tambour grâce à la création d'un coussin d'air sur l'enveloppe du tambour pour empêcher la maculature de la feuille imprimée,
    caractérisé en ce que des tôles de protection ( 17) frontalement par rapport à l'enveloppe du tambour rotative (13), avec des ventilateurs (15) coupés par l'intermédiaire d'une alimentation de tension électrique et pouvant passer de l'air de soufflage à de l'air d'aspiration, sont agencées de façon solidaire du bâti, et les tôles de protection (17) présentent des ouvertures (20) pour l'entrée de l'air de soufflage engendré par les ventilateurs (15) à l'intérieur ou de l'air d'aspiration de l'intérieur de l'enveloppe du tambour (13).
  2. Tambour de guidage de feuilles selon la revendication 1, caractérisé en ce que le tambour (1), comme tambour de réception d'une sortie, présente, entre la tôle de protection (17) et l'enveloppe du tambour (13), une roue à chaíne (19) tournante, fixée sur un arbre (14), avec des ouvertures (20), sur laquelle est fixée l'enveloppe du tambour (13).
  3. Tambour de guidage de feuilles selon la revendication 1, caractérisé en ce que le tambour (1), comme tambour de transfert, présente une enveloppe du tambour (13) fixée à l'arbre (14).
  4. Tambour de guidage de feuilles selon la revendication 1, caractérisé en ce qu'une tôle de guidage fermée (22) est associée, de facon solidaire du bâti, à l'intérieur du tambour (1), à la zone ne guidant pas les feuilles de l'enveloppe du tambour (13).
  5. Tambour de guidage de feuilles selon les revendications 1 et 2, caractérisé en ce qu'un élément de chauffage (24) est disposé, de façon voisine, en aval du ventilateur (15) avant la roue à chaíne (19).
EP96118805A 1996-03-23 1996-11-23 Cylindre de transfert de feuilles pour machine à imprimer Expired - Lifetime EP0796734B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19611590 1996-03-23
DE19611590A DE19611590C1 (de) 1995-12-15 1996-03-23 Bogenführende Trommel für eine Druckmaschine

Publications (2)

Publication Number Publication Date
EP0796734A1 EP0796734A1 (fr) 1997-09-24
EP0796734B1 true EP0796734B1 (fr) 1999-05-26

Family

ID=7789246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96118805A Expired - Lifetime EP0796734B1 (fr) 1996-03-23 1996-11-23 Cylindre de transfert de feuilles pour machine à imprimer

Country Status (2)

Country Link
EP (1) EP0796734B1 (fr)
AT (1) ATE180438T1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3347886A1 (de) * 1983-08-06 1985-05-30 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Abschmierfreie umfuehrtrommel fuer bogenrotationsdruckmaschinen
DE4223839C1 (de) 1992-07-20 1993-12-23 Heidelberger Druckmasch Ag Bogenführungszylinder einer Druckmaschine
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

Also Published As

Publication number Publication date
ATE180438T1 (de) 1999-06-15
EP0796734A1 (fr) 1997-09-24

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