WO1990012688A1 - Amenagement d'un appareil reglable pour retourner les feuilles a imprimer - Google Patents

Amenagement d'un appareil reglable pour retourner les feuilles a imprimer Download PDF

Info

Publication number
WO1990012688A1
WO1990012688A1 PCT/SE1990/000283 SE9000283W WO9012688A1 WO 1990012688 A1 WO1990012688 A1 WO 1990012688A1 SE 9000283 W SE9000283 W SE 9000283W WO 9012688 A1 WO9012688 A1 WO 9012688A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
turning
cylinder
transfer
transfer cylinder
Prior art date
Application number
PCT/SE1990/000283
Other languages
English (en)
Inventor
Ingemar Eriksson
Original Assignee
Solna Offset Ab
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=20375823&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1990012688(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Solna Offset Ab filed Critical Solna Offset Ab
Priority to EP90908128A priority Critical patent/EP0470204B1/fr
Priority to DE69013499T priority patent/DE69013499T2/de
Publication of WO1990012688A1 publication Critical patent/WO1990012688A1/fr

Links

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
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine

Definitions

  • the present invention refers to an arrangement for an ad ⁇ justable sheet turning equipment in a sheet offset press of unit type for the printing of both sides of a sheet and where said turning equipment includes only one transfer cylinder between the printing units in the sheet offset press.
  • sheet offset presses generally only one side of the sheet is printed at a time in a printing process. In single colour presses this is done in one printing unit, in two- or multi ⁇ colour presses in two or more printing units coupled together over one or three transfer cylinders for the transport of the sheet from one unit to the next, so called unit presses. Moreover, there are so called five cylinder presses, where two printing units are working against a common impression cylinder and where the transport of the sheet to the fol- lowing double printing unit is made with gripper bars carried on chains when multicolour printing.
  • both sides of the sheet should however be printed and in order to save the turning of the pile of paper and a renewal printing of the other side of the sheet, there are today adjustable presses which either print two or more colours on one side of the sheet or after adjustment print one or more colours also on the other side of the sheet at only one run through the press.
  • a two colour sheet offset press it is then possible to either print two colours on one side of the sheet or after adjustment one colour on each side of the sheet* Consequently, in a four colour sheet offset press either four colours can be printed on one side of the sheet or, after adjustment, two colours on each side and so on.
  • the turning equipment is engaged.
  • ⁇ is installed in or operates against one or more of the transfer cylinders.
  • the turning equipment is installed in an extra cylinder before the entrance to the receiving five cylinder unit.
  • the gripping of the sheet is changed from the fore edge to the rear edge and the sheet is then trans ⁇ ported with the original rear edge first and thus turned upside down and will in this way be printed in the following unit on the original back side of the sheet.
  • the sheet is now printed on both sides at only one run through the press and without extra paper handling.
  • the mechanisms which are re ⁇ quired in a .sheet offset press to make it adjustable as mentioned above are however rather complicated and then also expensive to make, they require more maintenance and can also influence the printing quality in negative direction.
  • Multicolour presses of unit type and with only one transfer cylinder between the units are available, but with the giving cylinder as impression cylinder in the first unit and with the receiving and turning cylinder as transfer cylinder between the units.
  • the object of the present invention is now to make an arrangement with an adjustable turning equipment in a street offset press as mentioned in the introduction by which the disadvantages in the mentioned designs are eliminated.
  • the o essential and most important features area stated in the following claims.
  • FIG. 1 shows a schematic side view of a preferred design of an adjustable turning equipment according to the invention including a swing gripper which is located above the transfer point in a sheet offset press,
  • Fig. 2 shows a schematic side view of a turning equipment according to another design within the present in ⁇ vention including a tumbling gripper arrangement in the impression cylinder in the following printing unit, and
  • Fig. 3 shows a schematic side view of a third design of a turning equipment according to the present invention including a shifting gripper arrangement in the impression cylinder in the following printing unit.
  • FIG. 1 a schematic side wiew of an ad- justable turning equipment in a sheet offset press of unit type is shown for the printing of both sides of sheet 1.
  • This sheet offset press has only one transfer cylinder 2 which is installed between the two after each other following printing units 3.
  • the transfer cylinder 2 On the transfer cylinder 2 the sheet 1 is held in a completely stretched condition between the grippers 4 for the firm holding of the fore edge 6 of the sheet 1 and the suc ⁇ tion bar 5 for the location of the rear edge 7 of the sheet 1.
  • the suction bar 5 should work with vacuum which through hoses and holes in the transfer cylinder, not shown on the , drawing, is maintained from a vacuum source.
  • the mentioned necessary stretching of the sheet 1 between its fore edge 6 and rear edge 7 is made by making the suction bar 5 movable and this stretching is so designed that it can be adjusted for all desired sheet sizes within the press specification.
  • the turning of the sheet is made between the giving transfer cylinder 2 and the receiving impression cylinder 8 in the following printing unit 3 over a distance of the surface of the transfer cylinder 2 on its top half segment.
  • the turning equipment according to the example il ⁇ lustrated in Fig. 1 includes the swing gripper 11 which is located above the transfer point 12 between the transfer cylinder 2 and the receiving impression cylinder 8.
  • FIG. 2 another design of a turning equip ⁇ ment is shown according to the present invention including a tumbling gripper arrangement 13 installed in the receiving impression cylinder 8.
  • the purpose of this gripper arrange ⁇ ment is that it shall grip the rear edge 7 of the sheet 1 for turning the sheet 1 in the very transfer point 12 between the giving transfer cylinder 2 and the receiving impression cylinder 8.
  • a third design of a turning equip ⁇ ment is shown according to the present invention including a shifting gripper arrangement 14 installed in the receiving impression cylinder 8.
  • the purpose of this gripper arrange ⁇ ment is that it shall grip the rear edge 7 of the sheet 1 for turning the sheet 1 in the very transfer point 12 between the giving transfer cylinder 2 and the receiving impression cylinder 8.

Abstract

L'invention concerne un aménagement pour un appareil permettant de retourner les feuilles à imprimer disposé dans une presse offset qui imprime les deux faces d'une feuille (1), comprenant un seul rouleau de transfert (2) disposé entre les unités d'imprimerie (3) dans la presse. Ladite feuille (1) est etendue complètement sur la moitié supérieur d'un rouleau de transfert (2), avant d'être tournée et sans tenir compte de sa taille, à une longueur au moins égale à la longueur de la feuille à tourner. La feuille (1) est ensuite tournée en passant entre le rouleau de transfert (2) qui la débite et le rouleau d'imprimerie (8) qui la reçoit dans l'unité d'imprimerie suivante (3).
PCT/SE1990/000283 1989-04-27 1990-04-27 Amenagement d'un appareil reglable pour retourner les feuilles a imprimer WO1990012688A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP90908128A EP0470204B1 (fr) 1989-04-27 1990-04-27 Amenagement d'un appareil reglable pour retourner les feuilles a imprimer
DE69013499T DE69013499T2 (de) 1989-04-27 1990-04-27 Anordnung für eine regelbare blattumdrehvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8901543A SE463503B (sv) 1989-04-27 1989-04-27 Anordning vid en omstaellbar vaendutrustning i en arkoffsetpress
SE8901543-2 1989-04-27

Publications (1)

Publication Number Publication Date
WO1990012688A1 true WO1990012688A1 (fr) 1990-11-01

Family

ID=20375823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1990/000283 WO1990012688A1 (fr) 1989-04-27 1990-04-27 Amenagement d'un appareil reglable pour retourner les feuilles a imprimer

Country Status (5)

Country Link
EP (1) EP0470204B1 (fr)
JP (1) JPH04504689A (fr)
DE (1) DE69013499T2 (fr)
SE (1) SE463503B (fr)
WO (1) WO1990012688A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE386856B (sv) * 1971-07-07 1976-08-23 Miller Printing Machinery Co Arkmatad rotationstryckpress

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE386856B (sv) * 1971-07-07 1976-08-23 Miller Printing Machinery Co Arkmatad rotationstryckpress

Also Published As

Publication number Publication date
EP0470204A1 (fr) 1992-02-12
DE69013499T2 (de) 1995-05-24
DE69013499D1 (de) 1994-11-24
SE463503B (sv) 1990-12-03
SE8901543L (sv) 1990-10-28
SE8901543D0 (sv) 1989-04-27
JPH04504689A (ja) 1992-08-20
EP0470204B1 (fr) 1994-10-19

Similar Documents

Publication Publication Date Title
US5042378A (en) Combined sheet-fed rotary printing machine for securities, especially banknotes
US4976197A (en) Reverse side printing device employing sheet feed cylinder in sheet-fed printer
US4732084A (en) Sheet-fed rotary printing machine for single-side multicolor printing and perfector printing
US4856426A (en) Sheet-fed rotary printing machine with printing units arranged in tandem
US4723489A (en) Device for turning over sheets in rotary presses
CA2187589A1 (fr) Machine a imprimer feuille par feuille
EP0982125B1 (fr) Presse multicolore d'impression en creux
ATE98559T1 (de) Konvertierbare mehrfarben-druckmaschine zum schoen- und widerdruck, insbesondere von banknoten.
US5467710A (en) Rotary printing press for two-sided printing of sheets
GB1525830A (en) Turning drum for a perfecting printing press
US4721041A (en) Device for a series-produced sheet-fed offset rotary press
US5333545A (en) Sheet-fed rotary offset printing press with a removable imprinting or finishing unit
US5259308A (en) Sheet-fed rotary offset printing machine
CA1246935A (fr) Machine rotative d'impression sur feuilles individuelles selon le mode polychrome monoface ou biface
JPH06336003A (ja) 両面刷枚葉オフセット印刷機
DE2305132B2 (de) Bogenwendevorrichtung für Rotations-Druckmaschinen
GB1525313A (en) Multicolour sheet-fed printing press
JP3735642B2 (ja) オフセット・ザンメル印刷機
ATE157596T1 (de) Rotations-bogendruckmaschine für schön- und widerdruck mit einem als speichertrommel wirksamen druckzylinder doppelt grossen durchmessers
EP0470204B1 (fr) Amenagement d'un appareil reglable pour retourner les feuilles a imprimer
JPS6064849A (ja) 両面４色刷りオフセット印刷機
US20040011229A1 (en) Satellite-type printing press
US20040000749A1 (en) Sheet perfecting apparatus for satellite-type printing press
EP0420234A2 (fr) Presse pour impression en plusieurs couleurs
JPH0222057A (ja) 両面多色オフセットザンメル印刷機

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1990908128

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1990908128

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1990908128

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1990908128

Country of ref document: EP