EP0464001A2 - Rotationsdruckmaschine für Überdruck - Google Patents

Rotationsdruckmaschine für Überdruck Download PDF

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Publication number
EP0464001A2
EP0464001A2 EP91830134A EP91830134A EP0464001A2 EP 0464001 A2 EP0464001 A2 EP 0464001A2 EP 91830134 A EP91830134 A EP 91830134A EP 91830134 A EP91830134 A EP 91830134A EP 0464001 A2 EP0464001 A2 EP 0464001A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
areas
intended
printing
rotary press
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.)
Withdrawn
Application number
EP91830134A
Other languages
English (en)
French (fr)
Other versions
EP0464001A3 (en
Inventor
Giancarlo Arici
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0464001A2 publication Critical patent/EP0464001A2/de
Publication of EP0464001A3 publication Critical patent/EP0464001A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for

Definitions

  • the present invention relates to a web press for overprinting.
  • packaging and the containers of articles and products belonging to several commercial sectors can be obtained from reels of flexible materials, such as for example paper supports and the like, having on their surfaces trade names and inscriptions. of all kinds, as well as the compositions of the products contained therein, advertising indications and other information of any kind, all these data being printed and repeated cyclically in correspondence of each packaging or container to be produced.
  • the main object of the present invention is to produce a rotary press for overprinting making it possible to modify on continuous flexible supports wound in reels the printed areas containing messages which are now obsolete, which would thus make it possible to completely recover the same flexible printed supports.
  • an important aim of the invention is to produce a rotary press for overprinting capable of very precisely overprinting the already printed areas to be modified, while ensuring a high degree of reliability.
  • Another object of the invention is to provide at least one specific embodiment of the invention which is advantageous in itself and able to offer technical progress in this particular field.
  • a rotary press for overprinting characterized in that it comprises: at least one overprinting group provided with at least one cylinder to be printed having on its surface printing zones, at least a first support element of a first reel of flexible support to be unwound, said flexible support having areas to be overprinted, at least a second support element for winding a second overprinted spool of said flexible support, a plurality of return rollers of said flexible support arranged along a working path between said first and second support elements, means for controlling the advance of said flexible support along said travel path work, and means of controlling said advance, intended to ensure that said areas to be overprinted exactly match in succession said corresponding printing areas.
  • the rotary press according to the invention has generally been indicated by the reference 1. It comprises at least one overprint group 2, in turn comprising at least one printing cylinder 3 having on its surface printing areas and intended to perform printing according to printing techniques known per se.
  • a number of overprinting groups 2 is provided equal to the number of colors to be transferred onto a flexible support 4. The latter, already printed and wound up to form a first reel 5 to be overprinted, provides areas printed at modify and therefore overprint.
  • the first coil 5 is supported by a first support element 6 and the flexible support 4 extends and takes place along a work path defined by a plurality of deflection rollers 7 and included between said first coil 5 and the second overprinted reel 8 supported by a second support element 9 provided with a motor for winding the flexible support 4.
  • the control means 10 for advancing the flexible support 4 comprise a first engine group 11 mechanically connected to the printing cylinder 3.
  • Means 12 are also provided for controlling the advance of the flexible support 4, intended to allow said printing areas of the printing cylinder 3 to follow in succession said areas to be overprinted of the flexible support 4.
  • the control means 12 comprise a cylinder of traction 13, arranged upstream of the printing cylinder 3 and actuated by a second motor group 14, for example a geared motor, a device 15 for detecting possible phase shifts between the printing areas and the areas to be overprinted, and a processing unit for signals 16, intended to receive phase shift signals from the detection device 15 and to send activation signals to the second motor unit 14.
  • the detection device 15 comprises a read head 17, arranged between the traction cylinder 13 and the printing cylinder 3 and intended to read identification marks arranged in correspondence of the areas to be overprinted and a sensor 18, placed near the printing cylinder 3 and intended to detect the rate of passage of said printing areas.
  • the second motor group 14 is connected, by mechanical connection means 19 comprising a Cardan joint 20 and a differential 21, to the first motor group 11.
  • the latter therefore rotates at a speed substantially synchronized with the speed of the cylinder to be printed 3 the second engine group 14 and the traction cylinder 13 connected to the latter.
  • auxiliary control cylinder 22 driven by a direct current electric motor 22a which can be activated by activation signals sent by the processing unit 16.
  • the electric motor 22a is also connected, by the interposition of the Cardan joint 20 and the differential 21, to the first motor unit 11.
  • counter-rollers 23 are provided in accordance with the printing cylinder 3, the traction cylinder 13 and the auxiliary control cylinder 22, these counter-rollers having the function of increasing the adhesion of the flexible support 4 on said said cylinders.
  • the printing cylinder 3 the traction cylinder 13 and the auxiliary control cylinder 22 drive the flexible support 4 at a preset speed, since they are all actuated by the first engine group 11.
  • the second motor group 14 and the electric motor 22a are only inactive mechanical members driven in rotation by the first motor group 11 by means of the differential 21 and the universal joint 20.
  • the read head 17 detects the passage of the identification marks matched with each zone to be overprinted and checks, in cooperation with the sensor 18, that this zone exactly matches the corresponding printer zone of the cylinder to be printed 3.
  • the processing unit 16 consequently transmits activation signals both for the second motor unit 14 and for the electric motor 22a.
  • These activation signals suitably calculated give rise, according to the detections carried out, to an active intervention of the traction cylinder 13 and of the auxiliary control cylinder 22. The latter, depending on the case, increase or reduce the speed of advance of the flexible support portions that are against them until when the phase shifts indicated by the detection device 15 are completely compensated.
  • the invention achieves the aims and allows significant advantages to be obtained.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Windings For Motors And Generators (AREA)
EP19910830134 1990-06-29 1991-04-09 Rotary printing press for overprinting Withdrawn EP0464001A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT02081790A IT1249030B (it) 1990-06-29 1990-06-29 Macchina rotativa da bobina per la sovrastampa
IT2081790 1990-06-29

Publications (2)

Publication Number Publication Date
EP0464001A2 true EP0464001A2 (de) 1992-01-02
EP0464001A3 EP0464001A3 (en) 1992-09-30

Family

ID=11172503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910830134 Withdrawn EP0464001A3 (en) 1990-06-29 1991-04-09 Rotary printing press for overprinting

Country Status (5)

Country Link
EP (1) EP0464001A3 (de)
JP (1) JPH04232745A (de)
ES (1) ES2029765A6 (de)
FR (1) FR2663882B1 (de)
IT (1) IT1249030B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10960659B2 (en) * 2014-07-02 2021-03-30 Rotoprint Sovrastampa S.R.L. System and method for overprinting on packages and/or containers of different formats

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015052738A1 (en) * 2013-10-11 2015-04-16 Rotoprint Sovrastampa S.R.L. System and method for overprinting on flexible support on reel with capability of relief printing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084698A1 (de) * 1982-01-26 1983-08-03 John Henry Morgan Apparat und Methode zum Variieren der Lage einer Operation, welche auf einem langen beweglichen Element durchgeführt wird
EP0095437A1 (de) * 1982-05-17 1983-11-30 Asea Ab Anordnung zur Registerregelung bei einer Druckanlage
EP0110669A1 (de) * 1982-11-24 1984-06-13 Xerox Corporation Papierbahnführungssystem
EP0226166A1 (de) * 1985-12-12 1987-06-24 Werner Kammann Maschinenfabrik GmbH. Verfahren und Vorrichtung zum Positionieren einer absatzweise vorzutransportierenden Materialbahn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084698A1 (de) * 1982-01-26 1983-08-03 John Henry Morgan Apparat und Methode zum Variieren der Lage einer Operation, welche auf einem langen beweglichen Element durchgeführt wird
EP0095437A1 (de) * 1982-05-17 1983-11-30 Asea Ab Anordnung zur Registerregelung bei einer Druckanlage
EP0110669A1 (de) * 1982-11-24 1984-06-13 Xerox Corporation Papierbahnführungssystem
EP0226166A1 (de) * 1985-12-12 1987-06-24 Werner Kammann Maschinenfabrik GmbH. Verfahren und Vorrichtung zum Positionieren einer absatzweise vorzutransportierenden Materialbahn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10960659B2 (en) * 2014-07-02 2021-03-30 Rotoprint Sovrastampa S.R.L. System and method for overprinting on packages and/or containers of different formats

Also Published As

Publication number Publication date
FR2663882B1 (fr) 1997-01-03
IT9020817A1 (it) 1991-12-29
IT1249030B (it) 1995-02-11
EP0464001A3 (en) 1992-09-30
JPH04232745A (ja) 1992-08-21
IT9020817A0 (de) 1990-06-29
FR2663882A1 (fr) 1992-01-03
ES2029765A6 (es) 1992-09-01

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