EP0711662A2 - Dispositif de raclage pour une machine d'impression en creux - Google Patents

Dispositif de raclage pour une machine d'impression en creux Download PDF

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Publication number
EP0711662A2
EP0711662A2 EP95114447A EP95114447A EP0711662A2 EP 0711662 A2 EP0711662 A2 EP 0711662A2 EP 95114447 A EP95114447 A EP 95114447A EP 95114447 A EP95114447 A EP 95114447A EP 0711662 A2 EP0711662 A2 EP 0711662A2
Authority
EP
European Patent Office
Prior art keywords
doctor
doctor blade
swash plate
adjustable
degree
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Withdrawn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
EP95114447A
Other languages
German (de)
English (en)
Other versions
EP0711662A3 (fr
Inventor
Herbert Lübke
Monika Will
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0711662A2 publication Critical patent/EP0711662A2/fr
Publication of EP0711662A3 publication Critical patent/EP0711662A3/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Withdrawn legal-status Critical Current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
    • B41F9/00—Rotary intaglio printing presses
    • B41F9/06—Details
    • B41F9/08—Wiping mechanisms
    • B41F9/10—Doctors, scrapers, or like devices
    • B41F9/1009—Doctors, scrapers, or like devices with reciprocating movement

Definitions

  • the invention relates to a doctor blade device for rotogravure printing machines according to the preamble of claim 1.
  • a doctor blade device for gravure printing machines is already known from DE 69 26 396 U, for example.
  • Such a doctor device comprises a doctor blade, which is moved axially back and forth to the printing roller and lies at an angle of attack, which is usually greater than 90 °, with a longitudinal edge on the circumference of the forme cylinder.
  • the reciprocating movement of the doctor blade is achieved in the known doctor device by a chain drive, the chain of which is attached on the one hand to the doctor blade and which can be moved back and forth by a drive rotating at a constant speed via a reversing gear, this reversing gear being in the limit positions the squeegee operated limit switch is switchable.
  • Such reversing gearboxes have a very complicated structure. On the other hand, a dead time occurs when the direction is reversed in the reversing gear. This is particularly troublesome when performing very small swiveling movements.
  • the object of the invention is therefore a generic doctor device to further develop such that in particular the doctor blade drive is simpler and that the operation takes place continuously even with a small drive stroke of the doctor blade knife.
  • this object is achieved on the basis of a generic doctor device by the features of claim 1. Accordingly, the doctor blade can be driven together with a doctor bar displaceably guided in a holder via a motor-driven swash plate fixed to the frame.
  • This squeegee drive according to the invention is particularly simple in construction and enables a stepless adjustment of the drive stroke of the squeegee knife.
  • the swashplate runs along its edge region on rollers fixed to the squeegee.
  • the working stroke of the doctor blade is preferably adjustable by adjusting the degree of wobble of the swash plate.
  • the degree of wobble can be adjusted using an adjustment lever that can be adjusted using a handwheel.
  • the doctor device 10 is in its working position shown.
  • a doctor blade 18 is placed against a forme cylinder 12, which is immersed in ink 16 in an ink tray 14 in a known manner.
  • the doctor blade 18 is inserted in a doctor holder 20 which is mounted on a doctor bar 22.
  • the doctor bar 22 is guided to and fro in the direction perpendicular to the plane of the drawing on guide rods 24.
  • the guide rods 24 are firmly connected in a manner not shown here with two side brackets 28.
  • the lateral holders 28 are connected in a rotationally fixed manner to an axis 26, which in turn is mounted in a crossmember, not shown here, which in turn is mounted in a manner that is not shown in the stand of the printing press so that it can be raised and lowered.
  • the drive of the reciprocation i.e. the translational movement of the doctor bar 22 and thus the doctor knife 18 can be explained in more detail with reference to FIG. 1.
  • the swash plate 34 is spherical in its edge region 36, so that the edge can roll undisturbed along the rollers 30 and 32 even when the swash plate 34 is inclined.
  • the swash plate 34 is mounted on a pin 38 which is mounted in a housing 40 via corresponding pivot bearings.
  • the housing 40 is firmly connected to the axis 26.
  • An electric motor 42 partially cut away in FIG. 1 is flanged to the housing 40.
  • the output shaft of the electric motor 42 is connected to the pin 38 via a coupling 44.
  • the speed of the translatory movement of the doctor bar 22 and thus of the doctor knife 18 is thus set via the speed of the electric motor.
  • the adjusting lever 46 engages in a fork 48 of a shaft piece 50 which is rotatably seated in a flange 52.
  • This flange 52 has an external thread 54 by means of which it is screwed into an internal thread of a plate 56 which is also fixed to the axis.
  • the screwable flange 52 can be rotated by hand relative to the plate 56 by means of a cover 58 connected to it in a rotationally fixed manner and spokes 60 attached thereto.
  • the flange is either screwed into plate 56 or unscrewed from it.
  • the adjusting lever 46 and thus the degree of wobble of the swash plate 34 are adjusted.
  • the working stroke of the doctor blade 18 can thus be infinitely adjusted by correspondingly rotating the flange 52.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP95114447A 1994-11-14 1995-09-14 Dispositif de raclage pour une machine d'impression en creux Withdrawn EP0711662A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4440648 1994-11-14
DE4440648A DE4440648A1 (de) 1994-11-14 1994-11-14 Rakelvorrichtung für Tiefdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0711662A2 true EP0711662A2 (fr) 1996-05-15
EP0711662A3 EP0711662A3 (fr) 1997-03-05

Family

ID=6533289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114447A Withdrawn EP0711662A3 (fr) 1994-11-14 1995-09-14 Dispositif de raclage pour une machine d'impression en creux

Country Status (6)

Country Link
US (1) US5676054A (fr)
EP (1) EP0711662A3 (fr)
JP (1) JPH08207231A (fr)
KR (1) KR960017153A (fr)
DE (1) DE4440648A1 (fr)
TW (1) TW281651B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008141694A1 (fr) * 2007-04-27 2008-11-27 Bobst Sa Systeme de racle pour groupe imprimeur destine a une machine d'impression en heliogravure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6293545B1 (en) * 1999-12-15 2001-09-25 Xerox Corporation Stripper blade assembly
DE10115857A1 (de) * 2001-03-30 2002-10-10 Tampoprint Gmbh Rotationstampondruckmaschine
CN106036930B (zh) * 2016-07-25 2017-12-01 江西农业大学 一种滚搓式莲子脱壳去皮一体机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6926396U (de) 1969-07-03 1972-07-27 Windmoeller & Hoelscher Rakelvorrichtung fuer tiefdruckmaschinen.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2323983A (en) * 1941-06-21 1943-07-13 United Biscuit Company Of Amer Doctor blade mechanism
DE1128866B (de) * 1960-03-18 1962-05-03 Maschf Augsburg Nuernberg Ag Vorrichtung zum axialen Hin- und Herbewegen von Farbwalzen bei Druckmaschinen
FR1485438A (fr) * 1966-07-05 1967-06-16 Adamovske Strojirny Np Dispositif de déplacement alternatif de rouleaux
US3593663A (en) * 1969-06-03 1971-07-20 Zerand Corp Doctor blade assembly for printing equipment
US3780670A (en) * 1972-08-07 1973-12-25 Faustel Inc Doctor blade assembly
DE3247679A1 (de) * 1982-12-23 1984-07-05 Albert-Frankenthal Ag, 6710 Frankenthal Rakelantrieb

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6926396U (de) 1969-07-03 1972-07-27 Windmoeller & Hoelscher Rakelvorrichtung fuer tiefdruckmaschinen.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008141694A1 (fr) * 2007-04-27 2008-11-27 Bobst Sa Systeme de racle pour groupe imprimeur destine a une machine d'impression en heliogravure
CN101668635B (zh) * 2007-04-27 2012-08-08 鲍勃斯脱股份有限公司 刮墨刀系统、印刷单元和照相凹版印刷机
US8915184B2 (en) 2007-04-27 2014-12-23 Bobst Mex Sa Doctor blade system for print unit intended for a photogravure printing machine

Also Published As

Publication number Publication date
DE4440648A1 (de) 1996-05-15
KR960017153A (ko) 1996-06-17
JPH08207231A (ja) 1996-08-13
US5676054A (en) 1997-10-14
TW281651B (fr) 1996-07-21
EP0711662A3 (fr) 1997-03-05

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