EP1009634B1 - Printing group for rotogravure printing presses - Google Patents

Printing group for rotogravure printing presses Download PDF

Info

Publication number
EP1009634B1
EP1009634B1 EP97942177A EP97942177A EP1009634B1 EP 1009634 B1 EP1009634 B1 EP 1009634B1 EP 97942177 A EP97942177 A EP 97942177A EP 97942177 A EP97942177 A EP 97942177A EP 1009634 B1 EP1009634 B1 EP 1009634B1
Authority
EP
European Patent Office
Prior art keywords
impression cylinder
doctor
printing
printing group
cylinder
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
EP97942177A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1009634A2 (en
Inventor
Giannino Bosoni
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.)
Schiavi SpA
Original Assignee
Schiavi SpA
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 Schiavi SpA filed Critical Schiavi SpA
Publication of EP1009634A2 publication Critical patent/EP1009634A2/en
Application granted granted Critical
Publication of EP1009634B1 publication Critical patent/EP1009634B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/02—Rotary intaglio printing presses for multicolour printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/06—Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders
    • B41F31/07—Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders for rotogravure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/061—Inking devices
    • B41F9/066—Enclosures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/08—Wiping mechanisms
    • B41F9/10—Doctors, scrapers, or like devices
    • B41F9/1036—Clamping and adjusting devices

Definitions

  • the present invention relates to a printing group for rotogravure printing presses.
  • Printing presses of the rotogravure type are provided with different printing stations, each of which is intended for a single colour.
  • Each station comprises a printing group composed of a cylinder on which the image to be printed is etched and against which the continuous strip, onto which the image is to be transferred, is pressed by a pressure roller.
  • the impression cylinder is inked by means of an inking roller partially immersed in an inking tray.
  • a blade known as a "doctor" in technical jargon, lightly presses against the impression cylinder so as to remove the excess ink and form a film of ink on the etched or engraved zone of the impression cylinder.
  • Each printing group which comprises, as is known, the impression cylinder, the inking roller and the doctor, is also provided with accessory elements such as a device for adjusting the correct position of the doctor and an ink collecting tray.
  • the continuous strip on which the image is printed passes in succession between the impression cylinder and pressure roller of the various printing stations, in each of which one of the colours of the image to be printed is impressed onto the strip itself.
  • cylinder-carrying carriages In order to speed up the operations for replacement of the impression cylinders, for some time cylinder-carrying carriages have been used, said carriages supporting the cylinder and being inserted underneath the structure of the printing station so as to facilitate the operations for removal and insertion of the cylinder.
  • US-A-4480543 discloses a printing group for a rotogravure printing press of the type comprising an impression cylinder which is inked by an inking roller partially immersed in an inking tray, and a doctor which lightly presses against the impression cylinder in order to remove the excess ink, whereby the printing group is completely enclosed between walls inside a chamber in which there are provided only slits for passage of the film to be printed and comprises a device for adjusting the position of the doctor with respect to the impression cylinder which allows the displacement in a vertical plane of the doctor depending on the value of the diameter of the impression cylinder.
  • DE-A-3201178 discloses a rotation of the doctor holder depending on the value of the diameter of the impression cylinder. Said automatic rotation is combined with another automatic rotation of the doctor depending on the working angle of the doctor on the impression cylinder.
  • the object of the present invention is that of reducing considerably the time required for replacement of the impression cylinder and of performing washing of the entire printing group and in particular the doctor, automatically, without the help of operators in order to avoid problems associated with the health of the operators themselves.
  • a further object is that of performing always automatically all the necessary adjustments of the doctor depending on the extension of the impression cylinder and the angle of inclination of the doctor itself, by means of the action of a single operator who enters the aforementioned data on a processor.
  • Figures 7, 8 and 9 show the system for washing the impression cylinder and the tray in two operating positions of the doctor.
  • 1 denotes a printing station in a printing press of the rotogravure type, in which station there is provided, in the bottom zone, a printing group 2 above which a system of rollers 3 for conveying a continuous film 4 is positioned.
  • the printing group comprises an impression cylinder 5 against which the continuous film 4 is pressed by means of a pressure roller 6.
  • the impression cylinder is acted on by a doctor 7 supported by an adjusting device 8 which will be illustrated in greater detail below.
  • an ink containing tray 9 housing an idle inking roller 10 kept pressed against the impression cylinder by two pneumatic cylinders 11 which support the entire tray by means of an intermediate frame 12.
  • the entire printing station 1 is enclosed between metal walls inside a chamber 50 in which there are provided only two slits 13 and 14 for passage of the film 4, the rear wall being provided with an inspection and maintenance hatch 15.
  • the doctor 7 is fixed by known means, which are not described here, onto a bar 16 which is able to rotate about a horizontal pivot 17 or perform a translatory movement vertically since the said bar is supported by two vertical columns 18 sliding in bushes 19 integral with the frame of the printing station; the two columns 18 are connected together at the bottom by means of a cross-piece 20.
  • Each column has milled on it a rack 21 which meshes with a pinion 22 keyed onto a shaft 23 supported by two supports 24.
  • the shaft 23 is driven by means of an electric motor 25 connected to a reducer 25a keyed onto said shaft.
  • the shaft 23 On the opposite side to the driving system, the shaft 23 has keyed onto it an encoder 26 designed to detect the number of revolutions of the shaft 23 itself.
  • Two end-of-travel stops 27 and 28 determine the maximum travel or vertical displacement of the doctor-carrying bar 16.
  • each cylinder 29 is connected to a ball joint 31 which is connected to the bar 16.
  • the doctor adjusting device described above via connection of the encoder and the electric motor to a processor, allows the position of the doctor to be adjusted automatically depending on the diameter of the impression cylinder; in short, the operator must simply set the diameter of the cylinder and the working angle of the doctor on the computer and automatically the electric motor will perform a predetermined number of rotations so as to bring the doctor into an optimum position, whereas the angular position is determined by the cylinders 29.
  • the working angle of the doctor is chosen depending on various factors such as, for example, the quality of the inks, the incisions on the cylinder and the like.
  • 32 denotes a pneumatic cylinder with opposing rods, the rod 33 of which is connected to an arm 35a of a lever 35 pivotably mounted at 36.
  • the rod 37 of the cylinder 32 is connected to the frame of the station and allows horizontal translation of the cylinder and the lever 35, while the rod 33 imparts a thrusting force to the impression cylinder 5 so as to push it out of the working position.
  • the lever 35 has an arm 35b which is inserted underneath the impression cylinder.
  • the impression cylinder 5 rolls on two horizontal guides 38 so as to end up on a carriage not illustrated.
  • the two rods 33 and 37 move out simultaneously so as to cause raising and thrusting of the impression cylinder.
  • the lever 35 is arranged in the position shown in broken lines and indicated by (a) so as to prevent the impression cylinder from dropping suddenly onto the support rollers 39.
  • two pneumatic cylinders 32 which operate two levers 35 located at the two ends of the impression cylinder.
  • the washing system comprises a duct 40 located on the doctor side and having engaged on it a plurality of nozzles 41 with a jet directed substantially towards the point of contact of the doctor with the impression cylinder and a plurality of nozzles 42 with the jet directed towards a baffle 43 for guiding into the tray.
  • Another duct 44 is positioned on the other side of the tray and has a plurality of nozzles 45 with the jet directed towards the impression cylinder and a plurality of nozzles 46 with the jet directed towards the walls of the tray.
  • Figure 9 shows in broken lines the position of the tray 9 in the lowered position.
  • the ducts 40 and 44 are able to rotate about their longitudinal axis so as to adapt to the different positions and orientations of the doctor upon variation in the diameter of the impression cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
  • Electronic Switches (AREA)
  • Ink Jet (AREA)
  • Retarders (AREA)
EP97942177A 1996-09-30 1997-08-26 Printing group for rotogravure printing presses Expired - Lifetime EP1009634B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT96PR000036A IT1288050B1 (it) 1996-09-30 1996-09-30 Gruppo di stampa per macchine rotative rotocalco
ITPR960036 1996-09-30
PCT/IT1997/000215 WO1998014329A2 (en) 1996-09-30 1997-08-26 Printing group for rotogravure printing presses

Publications (2)

Publication Number Publication Date
EP1009634A2 EP1009634A2 (en) 2000-06-21
EP1009634B1 true EP1009634B1 (en) 2002-03-06

Family

ID=11396025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97942177A Expired - Lifetime EP1009634B1 (en) 1996-09-30 1997-08-26 Printing group for rotogravure printing presses

Country Status (9)

Country Link
EP (1) EP1009634B1 (zh)
JP (1) JP2001501146A (zh)
KR (1) KR100516100B1 (zh)
CN (1) CN1110412C (zh)
AU (1) AU720109B2 (zh)
DE (1) DE69710929T2 (zh)
ES (1) ES2174289T3 (zh)
IT (1) IT1288050B1 (zh)
WO (1) WO1998014329A2 (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2225753T3 (es) * 2002-03-14 2005-03-16 Officine Meccaniche Giovanni Cerutti S.P.A. Proceso para limpiar un dispositivo de impresion para maquinas de impresion por rotograbado.
CN1322975C (zh) * 2005-04-18 2007-06-27 浙江美格机械有限公司 凹版印刷机刮刀装置
KR100667882B1 (ko) * 2005-10-04 2007-01-11 주식회사 디엠에스 롤프린트 장치
CN102431285B (zh) * 2011-08-15 2014-09-24 石家庄印钞有限公司 一种印刷机刮墨器自动就位装置
CN104960318B (zh) * 2015-04-24 2017-05-17 福建佶龙机械科技股份有限公司 一种用于凹版印刷机刮刀装置的角度调节机构
CN106079852B (zh) * 2016-06-03 2019-06-07 陕西北人印刷机械有限责任公司 一种凹版印刷机刮墨刀装置
CN109454976A (zh) * 2018-12-30 2019-03-12 杨立旭 印刷装置及其使用方法
CN113650403B (zh) * 2021-09-25 2022-10-28 杭州博思特装饰材料有限公司 凹版印刷机
CN115195272B (zh) * 2022-07-14 2024-03-26 浙江方邦机械有限公司 一种凹版印刷机
CN116653409B (zh) * 2023-08-01 2023-09-29 泉州市华山彩色印刷有限公司 一种凹版印刷设备及印刷工艺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE39031B1 (en) * 1972-12-21 1978-07-19 Saueressig Gmbh An intaglio printing machine for use with inks having a high solvent content
US3882817A (en) * 1974-01-11 1975-05-13 Black Clawson Co Doctor Blade Assembly
DE3201178A1 (de) * 1982-01-16 1983-07-28 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach "vorrichtung zum einstellen einer rakel in einer rotationstiefdruckmaschine auf den jeweiligen formzylinderdurchmesser"
DE3210767A1 (de) * 1982-03-24 1983-09-29 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Mehrfarben-tiefdruckrotationsmaschine
IT1176525B (it) * 1984-08-01 1987-08-18 Cerutti Spa Off Mec Dispositivo di registrazione istantanea per un gruppo a racla, asservito ad un cilindro di una macchina da stampa
IT1210258B (it) * 1987-02-20 1988-09-14 Schiavi Cesare Costr Mec Portalame orientabile per dispositivo raschiatore di un cilindro stampa di una macchina da stampa rotativa rotocalco
US5230775A (en) * 1990-06-05 1993-07-27 Thermo Electron Web Systems, Inc. Blade edge loading control for doctoring apparatus

Also Published As

Publication number Publication date
ITPR960036A1 (it) 1998-03-30
WO1998014329A3 (en) 1998-07-23
AU720109B2 (en) 2000-05-25
KR20000048745A (ko) 2000-07-25
CN1232426A (zh) 1999-10-20
KR100516100B1 (ko) 2005-09-22
IT1288050B1 (it) 1998-09-10
JP2001501146A (ja) 2001-01-30
DE69710929D1 (de) 2002-04-11
DE69710929T2 (de) 2002-11-07
AU4395897A (en) 1998-04-24
EP1009634A2 (en) 2000-06-21
ES2174289T3 (es) 2002-11-01
ITPR960036A0 (it) 1996-09-30
CN1110412C (zh) 2003-06-04
WO1998014329A2 (en) 1998-04-09

Similar Documents

Publication Publication Date Title
CA2207814C (en) Device for filling depressions in a cylinder; doctor blade device for this purpose and process for changing it
JP2550047B2 (ja) 加刷装置
JP2711185B2 (ja) オフセット印刷機
US5188027A (en) Printing apparatus with quickly changeable printing plate
EP1009634B1 (en) Printing group for rotogravure printing presses
RU2301153C2 (ru) Машина для глубокой печати
US7117789B2 (en) Method for loading and exchanging the rollers of the printing units of a printing machine and device for working the method
US4370926A (en) Printing press for printing sheets of corrugated paperboard
US6155166A (en) Rotogravure printing and coating machine
EP1080890A1 (en) Method and apparatus for exchanging a roll or a sleeve of a printing press
US6038972A (en) Quick change system for a press
US20030019374A1 (en) Flexographic printing machine
US20020108520A1 (en) Method of exchanging a printing cylinder sleeve and printing machine for carrying out the method
JP5022891B2 (ja) 液体塗布機械
US5878666A (en) Printing machine with at least one interchangeable cylinder
EP2650131A1 (en) Printing press with mobile inking carriage
US6945169B2 (en) Apparatus for producing printing plates
US3756152A (en) Ink recovery means for printing press
US7040224B2 (en) Roller moving apparatus
US5752440A (en) Device for exchanging a numbering cylinder of a numbering and imprinting unit of a rotary printing press
CN220482857U (zh) 一种印刷除静电装置
JPH0380629B2 (zh)
MXPA99011685A (en) Quick change system for a press
MXPA00007047A (en) Method and apparatus for exchanging a roll or a sleeve of a printing press
GB2300383A (en) Printing press

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19990322

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

RIC1 Information provided on ipc code assigned before grant

Free format text: 7B 41F 9/02 A, 7B 41F 9/10 B, 7B 41F 9/18 -, 7B 41F 9/06 -, 7B 41F 31/07 -

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20010409

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCHIAVI S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REF Corresponds to:

Ref document number: 69710929

Country of ref document: DE

Date of ref document: 20020411

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2174289

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20021209

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070823

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20070926

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070822

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070710

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080826

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080901

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090303

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080827

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20150827

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160826