EP3444115B1 - Flexodruckmaschine mit blattzufuhr - Google Patents

Flexodruckmaschine mit blattzufuhr Download PDF

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Publication number
EP3444115B1
EP3444115B1 EP17781736.8A EP17781736A EP3444115B1 EP 3444115 B1 EP3444115 B1 EP 3444115B1 EP 17781736 A EP17781736 A EP 17781736A EP 3444115 B1 EP3444115 B1 EP 3444115B1
Authority
EP
European Patent Office
Prior art keywords
drum
printing
paper delivering
printing paper
impression
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.)
Active
Application number
EP17781736.8A
Other languages
English (en)
French (fr)
Other versions
EP3444115A1 (de
EP3444115A4 (de
Inventor
Lixiang Ma
Jinping Wu
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.)
Nanjing Mint Co Ltd
China Banknote Printing and Minting Corp
Original Assignee
Nanjing Mint Co Ltd
China Banknote Printing and Minting Corp
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 Nanjing Mint Co Ltd, China Banknote Printing and Minting Corp filed Critical Nanjing Mint Co Ltd
Publication of EP3444115A1 publication Critical patent/EP3444115A1/de
Publication of EP3444115A4 publication Critical patent/EP3444115A4/de
Application granted granted Critical
Publication of EP3444115B1 publication Critical patent/EP3444115B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/02—Rotary letterpress machines for printing on sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/0443—Drying sheets, e.g. between two printing stations after printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B41F23/045—Drying sheets, e.g. between two printing stations by radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0476—Cooling
    • B41F23/0479—Cooling using chill rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/08—Tripping devices or stop-motions for starting or stopping operation of cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/12—Tripping devices or stop-motions for starting or stopping the machine as a whole

Definitions

  • the present invention relates to the technical field of printing equipment, and more particularly to a sheet-fed flexographic printing press.
  • ink drying and curing process are conducted on the printing surface immediately after printing such that the printing operations on the next step or the next side can be carried out.
  • the existing fast drying technology for printed product usually uses hot air, infrared or UV light curing and other principles, to achieve the fast drying of printed product.
  • the above drying method will have a thermal effect on the printed surface, causing a slightly warping due to slight increase of temperature on one side surface of the printed product, or even seriously significant deformation of printed product. In special circumstances, this even leads to cooking or burning of the printed product.
  • the demand for quality of the printing production is getting stricter, the user proposes more requirements to the online quality inspection system of the printing equipment.
  • the existing flexographic printing presses are still poor in terms of the online inspection system and the printing quality.
  • Figure 4 is a flow chart of an existing double-sided flexographic printing press, and the two printing color groups corresponding to both sides of the printed product in the flow chart are sequentially connected.
  • the printing, drying, and curing of the other surface (B side) is carried out immediately after the ink is dried and cured by the drying device upon printing completion of the first side (A side).
  • the printing structure has thermal accumulation problems when continuous drying of the printed product is conducted. The deformation caused by overheating and other issues affects the printing quality.
  • the on-line checking of both sides of the printing process is carried out after the two printings are completed, so that the feedback of the printing quality problems on the first side can be received only after the printing of the second side is completed. Therefore, there is a delay in quality control.
  • Figure 5 is a schematic representation showing the arrangement of the printing unit drums of an existing double-sided flexographic printing press.
  • the arrangement of the printing unit drums conforms to the printing process shown in Figure 4 .
  • the flexographic printing press adopts the printing method of continuously printing on both sides, which causes the above-mentioned problem of thermal accumulation of printed product and timeliness control of the printed product quality during the production process.
  • the patent document WO2011/l45028 A1 shows a sheet-fed printing press according to the preamble of claim 1 for numbering and varnishing of security documents, including banknotes, including a numbering group comprising at least one numbering unit for numbering printed material in the form of individual sheets carrying multiple security imprints; and - a varnishing group located downstream of the numbering group for applying varnish onto recto and verso sides of the printed material, the varnishing group comprising at least a first varnishing unit disposed above a path of the printed material to apply varnish on the recto side of the printed material and at least a second varnishing unit disposed below the path of the printed material to apply varnish on the verso side of the printed material.
  • the present invention provides a sheet-fed flexographic printing press which reduces the thermal accumulation of the printed product and timely detects quality problems of the printed product, as defined in claim 1.
  • a sheet-fed flexographic printing press includes a first printing unit and a second printing unit each for printing a side of a sheet of a printing stock, respectively.
  • the first printing unit comprises a first impression drum, a first printing paper delivering drum I, at least a first flexographic printing drum for installing a flexographic plate, a first printing ink drying and curing device and a first printing paper delivering drum II, wherein the at least first flexographic printing drum is provided with a corresponding first ink supply system;
  • the second printing unit comprises a second impression drum, a second printing paper delivering drum I, at least a second flexographic printing drum for installing a flexographic plate, a second printing ink drying and curing device and a second printing paper delivering drum II, wherein the at least second flexographic printing drum is provided with a corresponding second ink supply system;
  • the first printing paper delivering drums I and the first printing paper delivering drum II are provided between the first impression drum and the second impression
  • a temperature adjustment control mechanism is provided inside the drum having the temperature control to enable liquid medium to flow.
  • Said first and second impression drums, said first I, first II, second I and second II printing paper delivering drums, and said first and second flexographic printing drums are arranged such that the sheet of the printing stock successively passes through the first flexographic printing drum and the first impression drum, the first impression drum and the first printing paper delivering drum I, the first printing paper delivering drum I and the first printing paper delivering drum II, the first printing paper delivering drum II and the second impression drum, and the second impression drum and the second flexographic printing drum.
  • a gripper mechanism for gripping the sheet of the printing stock is installed inside each of the first impression drum, the first printing paper delivering drum I, the first printing paper delivering drum II, the second impression drum, the second printing paper delivering drum I, and the second printing paper delivering drum II.
  • a temperature adjustment control mechanism for flowing of the liquid medium is provided inside the first impression drum and the second impression drum.
  • the present invention has the following advantages.
  • two units (four printing paper feeding drums in total) are installed between and behind components where the two impression drums are located, respectively.
  • These printing paper feeding drums are drums having a temperature control and a quality checking device.
  • the printing paper feed drums are provided with the temperature control function, which can reduce the thermal accumulation of the printed product, to create conditions for print quality control and neat collection.
  • the printing paper feeding drums are provided with the quality checking device to conduct different quality checking or optical characteristics checking on two sides of the printed product based on the requirements of quality checking, such that the scope of checking is enlarged.
  • the checking device is provided between the components, which provides a condition for the timely feedback of the printing quality of the printed product.
  • the present invention can set a timely alarm, shutdown the machine, stop the printing drums or separate collection of printed product and other measures to reduce the unnecessary printing materials and printing stocks waste.
  • the present invention discloses a sheet-fed flexographic printing press, which includes a first printing unit and a second printing unit for printing both surfaces of sheet of the printing stock respectively.
  • the first printing unit includes first impression drum 1, first printing paper delivering drum I 2, first printing paper delivering drum II 3, second impression drum 4, second printing paper delivering drum I 5 and second printing paper delivering drum II 6.
  • First printing paper delivering drum 12 and first printing paper delivering drum II 3 are provided between first impression drum 1 and second impression drum 4, second printing paper delivering drum I 5 and second printing paper delivering drum II 6 are provided behind second impression drum 4.
  • First printing paper delivering drum I 2, first printing paper delivering drum II 3, second printing paper delivering drum I 5 and second printing paper delivering drum II 6 are provided as drums having a temperature control and a quality checking device.
  • the interior of the drum having the temperature control is provided with a temperature adjustment control mechanism for the liquid medium to flow
  • the drum having the quality checking device is a drum in which an optoelectronic device or a camera is mounted.
  • the optoelectronic device or camera is connected to a computer or other analytical equipment, so that the printing quality of the paper can be checked in real time.
  • two (even number) of printing paper feed drums are added between and behind the printing units corresponding to two surfaces of the printed product.
  • the paper alternates even times to ensure the two surface printings of the printed product.
  • the problem of thermal accumulation and timely quality control is solved by adding additional temperature control function and print quality checking function on the added printing paper drum.
  • First checking device 7 is provided at the exterior of first printing paper delivering drum I 2 and first printing paper delivering drum II 3
  • second checking device 8 is provided at the exterior of second printing paper delivering drum I 5 and second printing paper delivering drum II 6. Both, first checking device 7 and second checking device 8, are configured to check the material or print quality of the sheet of the printing stock Both, first checking device 7 and second checking device 8, are configured to check the print quality of the sheet of the printing stock
  • First checking device 7 and the second checking device 8 can be a high-speed camera, and the high-speed camera can be connected to a computer to carry out the checking of the printing quality of the printed product.
  • a gripper mechanism is installed in the interior of each of first impression drum 1, first printing paper delivering drum I 2, first printing paper delivering drum II 3, second impression drum 4, second printing paper delivering drum I 5 and second printing paper delivering drum II 6 for gripping sheet of the printing stock.
  • the present invention is directed to a sheet-fed double-sided flexographic printing press.
  • the gripper mechanism used to grip sheet of the printing stock is provided at the gap between impression drums, printing paper feed drums and other drums related to paper gripping and transferring.
  • a temperature adjustment control mechanism for flow of the liquid medium is provided inside first impression drum 1 and second impression drum 4.
  • At least one first flexographic printing drum 9 used for installing the flexographic plate is configured on first impression drum 1.
  • Flexographic printing drum 9 is provided with a corresponding first ink supply system 10.
  • At least one second flexographic printing drum 11 used for installing the flexographic plate is configured on second impression drum 4.
  • Second flexographic printing drum 11 is provided with a corresponding second ink supply system 12.
  • First ink supply system 10 and second ink supply system 12 are an anilox roller ink supply system.
  • First printing ink drying and curing device 13 is configured outside of first impression drum 1
  • second printing ink drying and curing device 14 is configured outside of second impression drum 4.
  • the fast drying and curing method will cause a certain amount of heat radiation, leading to increase in the temperature of the drums, other components and the printed product.
  • pipelines for flow of the liquid medium are designed inside the first impression drum 1, first printing paper delivering drum 12, first printing paper delivering drum II 3, second impression drum 4, second printing paper delivering drum I 5 and second printing paper delivering drum II 6, the temperature control of the drum and printed product is achieved by controlling the temperature and flow of liquid medium from outside.
  • Figure 3 is a flow chart of the printing process using the present invention.
  • the flow chart shows the sequential process of double-sided printing, drying and curing, cooling and quality checking of the printing press, respectively.
  • the sheet of the printing stock is firstly transferred to first impression drum 1 by the paper entering and feeding drum, and the sheet of the printing stock is successively passed through first flexographic printing drum 9 and flexographic printing drum 17 to complete the two-color overprinting of the first surface of the printed product.
  • the drying and curing of ink is conducted on the first surface by first printing ink drying and curing device 13.
  • the cooling treatment is conducted by first printing paper delivering drum I 2.
  • the printed product is transferred to second impression drum 4 through first printing paper delivering drum II to complete the two-color overprinting of the other surface.
  • the drying and curing of ink is conducted on the other surface by second printing ink drying and curing device 14.
  • the cooling treatment is conducted by second printing paper delivering drum I 5 and second printing paper delivering drum II 6. Finally, the printing is completed and the paper is provided as output.
  • the two-sided printing are checked and controlled by first checking device 7 and second checking device 8, respectively, to ensure the quality of the printed product.
  • paper feeding device 15 is provided at the front end of the first printing unit
  • multi-bin paper collecting device 16 is provided at the rear end of the second printing unit. It is convenient to print a large amount of paper by setting paper feeding device 15 and multi-bin paper collecting device 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (1)

  1. Flexodruckpresse mit Blattzufuhr, umfassend :
    eine erste Druckeinheit und eine zweite Druckeinheit jeweils zum Bedrucken einer Seite eines Bogens eines Bedruckstoffs, wobei die zweite Druckeinheit eine zweite Drucktrommel (4), eine zweite Druckpapierabgabetrommel I (5), mindestens eine zweite Flexodrucktrommel (11) zum Installieren einer Flexoplatte, eine zweite Druckfarbentrocknungs- und - härtungsvorrichtung (14) und eine zweite Druckpapierabgabetrommel II (6) umfasst, wobei die mindestens zweite Flexodrucktrommel (11) mit einem entsprechenden zweiten Farbzufuhrsystem (12) vorgesehen ist;
    die zweite Druckpapiertransporttrommel I (5) und die zweite Druckpapiertransporttrommel II (6) in Vorschubrichtung des Bogens hinter der zweiten Drucktrommel (4) angeordnet sind;
    die erste Druckeinheit eine erste Drucktrommel (1), mindestens eine erste Flexodrucktrommel (9) zum Aufbringen einer Flexoplatte, eine erste Druckfarbentrocknungs- und -härtungsvorrichtung (13) umfasst, wobei die mindestens eine Flexodrucktrommel (9) mit einem entsprechenden ersten Farbversorgungssystem (10) vorgesehen ist;
    eine Papiervorschubvorrichtung (15) am vorderen Ende der ersten Druckeinheit vorgesehen ist;
    eine Mehrschacht-Papiersammelvorrichtung (16) am hinteren Ende der zweiten Druckeinheit vorgesehen ist;
    dadurch gekennzeichnet, dass die erste Druckeinheit eine erste Druckpapierabgabetrommel I (2) und eine erste Druckpapierabgabetrommel II (3) umfasst;
    die erste Druckpapierabgabetrommel I (2) und die erste Druckpapierabgabetrommel II (3) zwischen der ersten Drucktrommel (1) und der zweiten Drucktrommel (4);
    jede der ersten Druckpapierabgabetrommel I (2), der ersten Druckpapierabgabetrommel II (3), der zweiten Druckpapierabgabetrommel I (5) und der zweiten Druckpapierabgabetrommel II (6) eine Trommel mit einer Temperatursteuerungsvorrichtung ist;
    eine erste Kontrollvorrichtung (7) jeweils außerhalb der ersten Druckpapierabgabetrommel I (2) und der ersten Druckpapierabgabetrommel II (3) vorgesehen ist, und eine zweite Kontrolleinrichtung (8) jeweils außerhalb der zweiten Druckpapierabgabetrommel I (5) und der zweiten Druckpapierabgabetrommel II (6) vorgesehen ist, wobei sowohl die erste Kontrollvorrichtung (7) als auch die zweite Kontrollvorrichtung (8) konfiguriert sind, das Material oder die Druckqualität des Bedruckstoffs zu kontrollieren;
    ein Temperaturregelungsmechanismus, der das Fließen eines flüssigen Mediums ermöglicht, innerhalb jeder der ersten Drucktrommel (1) und der zweiten Drucktrommel (4) vorgesehen ist;
    ein Temperaturregelungsmechanismus, der konfiguriert ist, um eine thermische Akkumulation des Bogens zu reduzieren, innerhalb jeder der ersten I (2), ersten II (3), zweiten I (5) und zweiten II (6) Druckpapierabgabetrommeln mit der Temperaturregelungsvorrichtung vorgesehen ist, um zu ermöglichen, dass flüssiges Medium fließt,
    die erste (1) und die zweite (4) Drucktrommel, die erste I (2), die erste II (3), die zweite I (5) und die zweite II (6) Druckpapierabgabetrommel und die mindestens erste (9) und die mindestens zweite (11) Flexodrucktrommel so angeordnet sind, dass der Bogen des Bedruckstoffs nacheinander die mindestens erste Flexodrucktrommel (9) und die erste Drucktrommel (1), die erste Drucktrommel (1) und die erste Druckpapierabgabetrommel I (2), die erste Druckpapierabgabetrommel I (2) und die erste Druckpapierabgabetrommel II (3), die erste Druckpapierabgabetrommel II (3) und die zweite Drucktrommel (4) sowie die zweite Drucktrommel (4) und die mindestens zweite Flexodrucktrommel (11) durchläuft, wobei in der ersten Drucktrommel (1), der ersten Druckpapierabgabetrommel I (2), der ersten Druckpapierabgabetrommel II (3), der zweiten Drucktrommel (4), der zweiten Druckpapierabgabetrommel I (5) und der zweiten Druckpapierabgabetrommel II (6) jeweils ein Greifermechanismus zum Greifen des Bogens des Bedruckstoffs installiert ist.
EP17781736.8A 2016-04-11 2017-02-15 Flexodruckmaschine mit blattzufuhr Active EP3444115B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610219265.XA CN107160827B (zh) 2016-04-11 2016-04-11 一种单张纸柔版印刷机
PCT/CN2017/073585 WO2017177760A1 (zh) 2016-04-11 2017-02-15 一种单张纸柔版印刷机

Publications (3)

Publication Number Publication Date
EP3444115A1 EP3444115A1 (de) 2019-02-20
EP3444115A4 EP3444115A4 (de) 2019-11-13
EP3444115B1 true EP3444115B1 (de) 2022-03-23

Family

ID=59848712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17781736.8A Active EP3444115B1 (de) 2016-04-11 2017-02-15 Flexodruckmaschine mit blattzufuhr

Country Status (4)

Country Link
EP (1) EP3444115B1 (de)
JP (1) JP6408170B2 (de)
CN (1) CN107160827B (de)
WO (1) WO2017177760A1 (de)

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DE102021126115A1 (de) 2020-10-22 2022-04-28 Heidelberger Druckmaschinen Aktiengesellschaft Druckmaschine mit Zwillingsdruckwerk und Verfahren zum Betreiben einer solchen Druckmaschine

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Also Published As

Publication number Publication date
EP3444115A1 (de) 2019-02-20
JP6408170B2 (ja) 2018-10-17
WO2017177760A1 (zh) 2017-10-19
CN107160827B (zh) 2020-04-14
EP3444115A4 (de) 2019-11-13
JP2018514415A (ja) 2018-06-07
CN107160827A (zh) 2017-09-15

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