EP0939738B1 - Dispositif d'alimentation en feuilles - Google Patents

Dispositif d'alimentation en feuilles Download PDF

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Publication number
EP0939738B1
EP0939738B1 EP97948692A EP97948692A EP0939738B1 EP 0939738 B1 EP0939738 B1 EP 0939738B1 EP 97948692 A EP97948692 A EP 97948692A EP 97948692 A EP97948692 A EP 97948692A EP 0939738 B1 EP0939738 B1 EP 0939738B1
Authority
EP
European Patent Office
Prior art keywords
sheet
gripper
cylinder
designed
feeding
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
EP97948692A
Other languages
German (de)
English (en)
Other versions
EP0939738A1 (fr
Inventor
Reinhard Nerger
Arndt Jentzsch
Victor Hefftler
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0939738A1 publication Critical patent/EP0939738A1/fr
Application granted granted Critical
Publication of EP0939738B1 publication Critical patent/EP0939738B1/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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • B65H3/0833—Suction grippers separating from the top of pile and acting on the front part of the articles relatively to the final separating direction
    • 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
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers

Definitions

  • the invention relates to a device for feeding sheets from a sheet stack to a transport drum of a printing press.
  • Printing machines are known (US-A-4,343,462) who have a triple size Printing cylinder with three pressure calipers and three rows of grippers have, the printing cylinder with a double-sized Offset cylinder and this with a double-sized plate cylinder cooperates.
  • the plate cylinder are two alternate in operative connection with the two pressure plates of the plate cylinder bringable inking units and dampening units assigned.
  • the sheets to be printed are fed to the three gripper rows of the impression cylinder. After the multi-colored Printing on the three sheets takes place at two cylinder revolutions feeding the next three sheets.
  • the object of the invention is to provide a device for Feed sheets with high feed rate and low dynamic Charges.
  • the object is characterized by the characterizing part of the claim solved.
  • a feed device is shown schematically, the feed device the top sheet 1 of each a sheet stack 2 isolated and the same up to a sheet transport drum 3 promotes.
  • the sheet transport drum 3 is a printing cylinder with three rows of grippers 9, three cylinder channels 12 and with three pressure calipers 10 trained.
  • the sheet transport drum 3 is in relation to a not shown having only one pressure saddle 10 Standard cylinder three times the size.
  • the sheet transport drum 3 stands with at least one with a printing blanket Covered offset cylinder 11 in operative connection, the Offset cylinder 11 has two blanket saddles 13 and opposite the normal cylinder mentioned is double in size.
  • the offset cylinder 11 is also double-sized Printing form cylinder 14 with two printing form saddles 15, on which one printing form each is clamped, in operative connection.
  • the feed device consists of a transport element 4 and a pre-gripper 5.
  • the transport element 4 is above the sheet stack 2, preferably arranged in the front area of the uppermost sheet 1, connected to a vibratory drive, not shown and trained as a suction transducer.
  • the suction cup 6 of the suction oscillator are preferably as so-called three-stage suction cups educated.
  • the oscillation angle of the transport element 4 is a maximum of 25 ° and is preferably 10 °.
  • the top sheet 1 is used as a three-stage suction cup trained suction cups 6 of the transport element 4 in the area of Front edge (gripper edge) gripped and by a vertical movement the vacuum from the sheet stack 2 isolated. After that the bow 1 over the feed table 7 located in front of the sheet stack 2 up to those at the front end of the feed table Feed marks 8 promoted and released by the suction cups 6.
  • the suction cups 6 become vertical again before the swinging back process moved and over the sheet stack 2 after completion of the swing back movement lowered onto the sheet stack 2; after that begins the process described again.
  • a pre-gripper 5 is arranged below the feed table 7. This pre-gripper is designed as a suction oscillator. The vacuum cleaner takes the sheet 1 from the feed table 7, accelerated him and passes it to one of the gripper rows 9 Sheet transport drum 3.
  • the sheet is fed to the sheet transport drum 5 only to every second row of grippers 9.
  • the design of the feed device as two suction oscillators leads through the use of air as a holding element and of the valve control elements used to a very low mass Construction and therefore no dynamic loads, which means high speeds are possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Claims (4)

  1. Dispositif d'amenée de feuilles d'une pile de feuilles à un tambour de transport de feuilles d'une machine à imprimer caractérisé de sorte que soit disposé au-dessus de la pile de feuilles (2) un élément de transport constitué en tant qu'aspirateur (4) saisissant la feuille (1) la plus haute de la pile de feuilles (2) à amener à chaque fois, séparant la feuille de la pile de feuilles (2) et transportant la feuille sur une table de marge (7) vers des taquets de marge (8) et relié à un entraínement oscillant et caractérisé de sorte que soit disposé au-dessous du niveau de la table de marge (7) une pince préliminaire_(5) constituée en tant que balancier saisissant la feuille (1) à amener, accélérant la feuille et remettant la feuille au tambour de transport de feuilles (3).
  2. Dispositif d'amenée selon la spécification 1 caractérisé de sorte que le tambour de transport de feuilles (3) soit constitué en tant que cylindre offset de double dimension (11) avec deux supports de blanchet (13)_concourant avec un cylindre d'impression de triple dimension avec trois supports d'impression (10) et trois rangées de pinces (9) et de sorte que seulement une rangée de pinces (9) sur deux se voie amener une feuille (1).
  3. Dispositif d'amenée selon la spécification 1 caractérisé de sorte que le retour du mouvement oscillatoire de la pince préliminaire (5) constituée en tant que balancier aspirateur se réalise par un creux de cylindre (12) du cylindre de guidage de feuilles (3).
  4. Dispositif d'amenée selon la spécification 1 caractérisé de sorte que le point de retour du mouvement oscillatoire de la pince préliminaire (5) constituée en tant que balancier aspirateur soit décalé en asymétrie au profit d'une accélération minimale de la feuille (1).
EP97948692A 1996-10-29 1997-10-28 Dispositif d'alimentation en feuilles Expired - Lifetime EP0939738B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19644944A DE19644944A1 (de) 1996-10-29 1996-10-29 Einrichtung zum Zuführen von Bogen
DE19644944 1996-10-29
PCT/DE1997/002525 WO1998018704A1 (fr) 1996-10-29 1997-10-28 Dispositif d'alimentation en feuilles

Publications (2)

Publication Number Publication Date
EP0939738A1 EP0939738A1 (fr) 1999-09-08
EP0939738B1 true EP0939738B1 (fr) 2001-04-11

Family

ID=7810318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97948692A Expired - Lifetime EP0939738B1 (fr) 1996-10-29 1997-10-28 Dispositif d'alimentation en feuilles

Country Status (3)

Country Link
EP (1) EP0939738B1 (fr)
DE (2) DE19644944A1 (fr)
WO (1) WO1998018704A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008014812A1 (de) 2008-03-18 2009-09-24 Koenig & Bauer Aktiengesellschaft Vorrichtung zum Zuführen von Bogen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10013379A1 (de) * 2000-03-17 2001-09-20 Koenig & Bauer Ag Bogenrotationsdruckmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2156577B2 (de) * 1971-11-15 1974-07-04 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Vorgreiferschwinganlage
DD142694A1 (de) * 1979-04-02 1980-07-09 Guenter Weisbach Bogenrotationsdruckmaschine mit einem von unten arbeitenden vorgreifer
DD142869A1 (de) * 1979-04-02 1980-07-16 Guenter Weisbach Schwingender,von unten arbeitender vorgreifer
DE4332683A1 (de) * 1993-09-25 1995-03-30 Heidelberger Druckmasch Ag Vorrichtung für den Antrieb eines schwingenden Vorgreifers für den Einzelbogentransport in einer Druckmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008014812A1 (de) 2008-03-18 2009-09-24 Koenig & Bauer Aktiengesellschaft Vorrichtung zum Zuführen von Bogen
EP2105395A1 (fr) 2008-03-18 2009-09-30 Koenig & Bauer AG Dispositif destiné au transport de feuilles

Also Published As

Publication number Publication date
DE59703364D1 (de) 2001-05-17
DE19644944A1 (de) 1998-04-30
EP0939738A1 (fr) 1999-09-08
WO1998018704A1 (fr) 1998-05-07

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