EP0391843A1 - Vorrichtung zum Befestigen einer Druckrakel und/oder einer Farbschippe - Google Patents

Vorrichtung zum Befestigen einer Druckrakel und/oder einer Farbschippe Download PDF

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Publication number
EP0391843A1
EP0391843A1 EP90810219A EP90810219A EP0391843A1 EP 0391843 A1 EP0391843 A1 EP 0391843A1 EP 90810219 A EP90810219 A EP 90810219A EP 90810219 A EP90810219 A EP 90810219A EP 0391843 A1 EP0391843 A1 EP 0391843A1
Authority
EP
European Patent Office
Prior art keywords
doctor
squeegee
printing
holder
pressure
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Withdrawn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
EP90810219A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jürg Holderegger
Dionizy Simson
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.)
PRSS- MASCHINEN AG
PRSS Maschinen AG
Original Assignee
PRSS- MASCHINEN AG
PRSS Maschinen AG
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 PRSS- MASCHINEN AG, PRSS Maschinen AG filed Critical PRSS- MASCHINEN AG
Publication of EP0391843A1 publication Critical patent/EP0391843A1/de
Withdrawn legal-status Critical Current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
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/44—Squeegees or doctors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors

Definitions

  • the invention relates to a device for attaching a squeegee and / or a color shifter to the crossbars above the printing screen of a screen printing machine, with a cab profile extending along the spar into which the printing squeegee and / or the color shifter can be inserted transversely to the length of the spar, with retention the pressure squeegee and / or the ink shovel a pressure-tight, elastically stretchable clamping hose is inserted into a longitudinal groove running parallel to the profile cavity, which is acted upon by a pressure medium via a pressure maintaining valve and presses the pressure squeegee and / or the ink shovel against a wall of the profile cavity.
  • Such a device is known from EP-A-298 911; in this construction, the hollow profile is not rotatable relative to the cross bars of the screen printing machine; A correct "inclination" of the printing squeegee and / or the ink shovel relative to the printing screen must therefore be carried out - as was previously the case with screen printing machines - by turning the cross bar, which is rotatably mounted at its ends. Furthermore, the doctor blade or ink paddle can only be replaced in one of the end positions of the bar and requires considerable manual effort.
  • the object of the invention is therefore to improve the known construction in such a way that the setting and changing of the doctor blade and ink shovel are simplified.
  • the cabbage profile is divided into a doctor blade holder containing the profile cavity and a spar rest which are rotatably connected to one another via a cylindrical axis of rotation mounted in hollow cylindrical bearing shells.
  • the squeegee holder can be pivoted out relatively far, for example about 70 °, in the running direction of the bar and locked in this position.
  • An angle scale on one end of the squeegee holder enables every angular position to be reproduced precisely and reproducibly after a squeegee or shovel change.
  • the bearing shells are arranged on the doctor holder and the axis of rotation on the column support. Furthermore, a simple fixation of the set angle is possible if the squeegee holder has elastically deformable webs below and parallel to the bearing shells, and if the desired angular position of the spar support relative to the squeegee holder can be fixed by the pressure medium with the aid of an elastic deformation of the webs.
  • the crossbar 1 of a screen printing machine rests on a spar support 2 and is fixed with the aid of clamping jaws 3, which can be moved by a screw spindle 5 provided with a knurled knob 4, guided on two rods 17.
  • a cylindrical axis of rotation 7 is attached to the underside of the spar support 2 via a narrow connection 6; this is comprised of bearing shells 8 of a doctor holder 9, which are cut out in such a way that the doctor holder 9 in one direction - to the right in FIGS. 1 and 2 - by an angle of approximately 70 ° (FIG. 2) and in the other direction by approximately Can be swiveled out by 30 °, the larger swivel range from the vertical in the running direction of the bar and serves to replace the doctor blade or shovel, while swiveling takes place in the smaller angular range against the running direction and adjusts the angle settings of the doctor blade and shovel for the printing process.
  • the actual bearing surface of the bearing shells 8 is divided into two partial surfaces, each of which is connected to part of the boundaries of the profile cavity 10 of the doctor holder 9. Between the two partial storage surfaces there is a narrow, elastically deformable web 11 which holds the two parts of the boundaries of the profile cavity 10 together.
  • a pressure squeegee 13 and / or an ink pad 14 (FIG. 2) is mounted and held, as is described in detail in the mentioned EP-A-298 911.
  • the web 11 is simultaneously elastically deformed by the clamping hose 12, which is pressurized with a pressure medium, for example air, and which presses the pressure doctor blade 13 or the ink pad 14 against a wall of the profile cavity 10; as a result, the bearing shells 8 are pressed against the cylindrical axis of rotation 7, as a result of which the doctor holder 9 and thus the angular position of the doctor 13 or the ink pad 14 are fixed.
  • a pressure medium for example air
  • the squeegee holder 9 is pivoted into the position shown in FIG. 2, in which it can be held in place by a locking device (not shown); As can be seen from FIG. 2, in the shown position of the squeegee holder 9, it is necessary to replace the squeegee 13 or the shovel 14 manipulations can be carried out easily and without hindrance.
  • An angle scale 15 (FIG. 3) attached to an end face of the axis of rotation 7 (FIG. 3) and a corresponding mark 16 on the squeegee holder 9 make it possible, after a change of the squeegee 13 or the ink pad 14, and after releasing the mentioned locking, the previous one Angle position of squeegee 13 or shovel 14 again - or another - to readjust.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
EP90810219A 1989-04-05 1990-03-20 Vorrichtung zum Befestigen einer Druckrakel und/oder einer Farbschippe Withdrawn EP0391843A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1269/89A CH677641A5 (enrdf_load_stackoverflow) 1989-04-05 1989-04-05
CH1269/89 1989-04-05

Publications (1)

Publication Number Publication Date
EP0391843A1 true EP0391843A1 (de) 1990-10-10

Family

ID=4206450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810219A Withdrawn EP0391843A1 (de) 1989-04-05 1990-03-20 Vorrichtung zum Befestigen einer Druckrakel und/oder einer Farbschippe

Country Status (3)

Country Link
EP (1) EP0391843A1 (enrdf_load_stackoverflow)
JP (1) JPH02286243A (enrdf_load_stackoverflow)
CH (1) CH677641A5 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102059850A (zh) * 2010-11-16 2011-05-18 汤志 印刷机刮刀装置
CN104669778A (zh) * 2015-03-16 2015-06-03 董青山 一种气胀钳口绷网机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4566810B2 (ja) * 2005-04-27 2010-10-20 ヤマハ発動機株式会社 スクリーン印刷装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402421A (en) * 1971-06-01 1975-08-06 Kippax Sons Ltd H G Printing apparatus
US3943849A (en) * 1973-09-13 1976-03-16 Michael Vasilantone Squeegee with sweep-movement capability
DE3614304A1 (de) * 1986-04-29 1987-11-05 Rudolf August Kuerten Verfahren und vorrichtung zum ausrichten der rakel beim rotationssiebdruck
EP0298911A2 (de) * 1987-07-06 1989-01-11 Jürg Holderegger Vorrichtung zum Befestigen einer Druckrakel und/oder einer Farbschippe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1402421A (en) * 1971-06-01 1975-08-06 Kippax Sons Ltd H G Printing apparatus
US3943849A (en) * 1973-09-13 1976-03-16 Michael Vasilantone Squeegee with sweep-movement capability
DE3614304A1 (de) * 1986-04-29 1987-11-05 Rudolf August Kuerten Verfahren und vorrichtung zum ausrichten der rakel beim rotationssiebdruck
EP0298911A2 (de) * 1987-07-06 1989-01-11 Jürg Holderegger Vorrichtung zum Befestigen einer Druckrakel und/oder einer Farbschippe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102059850A (zh) * 2010-11-16 2011-05-18 汤志 印刷机刮刀装置
CN104669778A (zh) * 2015-03-16 2015-06-03 董青山 一种气胀钳口绷网机

Also Published As

Publication number Publication date
CH677641A5 (enrdf_load_stackoverflow) 1991-06-14
JPH02286243A (ja) 1990-11-26

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

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