EP0576315A1 - Rakelhalter, insbesondere für eine Siebdruckmaschine - Google Patents

Rakelhalter, insbesondere für eine Siebdruckmaschine Download PDF

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Publication number
EP0576315A1
EP0576315A1 EP93401406A EP93401406A EP0576315A1 EP 0576315 A1 EP0576315 A1 EP 0576315A1 EP 93401406 A EP93401406 A EP 93401406A EP 93401406 A EP93401406 A EP 93401406A EP 0576315 A1 EP0576315 A1 EP 0576315A1
Authority
EP
European Patent Office
Prior art keywords
doctor blade
reliefs
vice
base
jaws
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Withdrawn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
EP93401406A
Other languages
English (en)
French (fr)
Inventor
Dominique Giard
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.)
Fimor SA
Original Assignee
Fimor SA
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 Fimor SA filed Critical Fimor SA
Publication of EP0576315A1 publication Critical patent/EP0576315A1/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Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a doctor blade holder.
  • doctor blade carriers having a groove the thickness of the doctor blade, but not allowing the angle of attack to be adjusted (see in particular documents CH-A-376 083, DE-U-8 709 832 , JP-A-5 6 120 349, US-A-4 989 511, EP-A-0 167 906, US-A-4 940 354, US-A-4 648 371, US-A-4 841 854, US-A-4,102,266, DE-A-1,536,985).
  • the invention aims to adjust both the thickness of the doctor blade, the angle of attack of the doctor blade, its stiffness and to strengthen its ends.
  • the invention provides a doctor blade of the type forming the subject of the preamble of the main claim characterized by a first pair of hooking reliefs located on two branches extending from the jaws; a second pair of attachment reliefs located on support means carried by a base; said reliefs being complementary for cooperating in a removable manner; one of the pairs of reliefs having a double plurality of successive reliefs; clamping means allowing the angular blocking of the vice carrying the doctor blade relative to the base intended to be fixed to the chassis of a machine or to be manipulated; the support means being rigidly fixed to the base and having the form of two half-cylinders where the two pluralities of reliefs are located; each branch having the general shape of a quarter cylinder and the two branches being able to envelop the support means.
  • the scraper assembly 1 comprises a doctor blade holder 2 to which a doctor blade 3 is rigidly and removably attached (or two doctor blades 3a, 3b).
  • the doctor blade holder 2 comprises a body 4 and a vice 5.
  • the rigid body 4 comprises a base 6 intended in particular to be fixed to the chassis 7 of a machine and support means 8.
  • the vice 5 comprises two jaws 9a, 9b and clamping means 10.
  • Two branches 11a, 11b extend the jaws 9a, 9b and move apart to snap onto the support means 8 by means of reliefs additional hanging.
  • the scraper assembly 1 has a main axis 12 with respect to which the doctor blade 2 and the doctor blade 3 are profiled and two planes of symmetry P (base 6, support means 8) and Q (vice 5, doctor 3) to rotate relative to the plane P on a maximum stroke of 90 °.
  • a first pair of attachment reliefs 13a, 13b arranged opposite are located on the branches 11a, 11b, at their end portions.
  • a second pair of attachment reliefs 14a, 14b arranged opposite are located on the support means 8.
  • the reliefs 13a, 14a, 13b, 14b are respectively complementary for cooperating in a removable manner.
  • One of the two pairs of reliefs (in this case 14a, 14b) has a double plurality of successive similar reliefs.
  • the spacing between two opposite symmetrical reliefs varies discreetly from a maximum value E1 to a minimum value E2.
  • Clamping means 15 structurally coincident with the means 10 allow the angular locking, around of the axis 12, of the vice 5 with respect to the base 6 between two extreme positions.
  • FIG. 8 There is provided (FIG. 8) a stirrup 16 forming at its end part the base 6.
  • the blocking on the frame 7 is carried out by a threaded rod 19 passing through a threaded hole of the stirrup opposite the base 6 , terminated by a handling member 20 and by a support plate 21 coming from one side of the chassis 7, the other side of which cooperates with an imprint 22 on the internal face of the base 6 (or a plurality of footprints 22 for different chassis 7).
  • the base 6 can be intended to be manipulated in the form of a handle ( Figure 7).
  • the two jaws 9a, 9b are of the same length. In FIG. 3, they are dissimilar, one 9a, having an extension 24. At least one of the jaws 9a, 9b comprises, on its internal face 25, a stop 26 for the doctor blade 3 and, at its end, reliefs 9c for holding the doctor blade 3.
  • the two faces 25 are parallel or substantially.
  • the doctor blade holder 2 comprises (FIGS. 4 and 5) at least one profiled reinforcing plate 27 having a fixing part 28, a support part 29 and a recess 30 between them.
  • Elastic means 31 ensure elasticity of the mounting of the plate 27 on the vice 5 and are mounted on the clamping means 10 passing through lights 32 of the plate 27 and allowing adjustment.
  • the doctor blade holder 2 comprises (FIG. 6) on the same body 4, two clamps 5a, 5b nested and inclined relative to each other, the two doctor blades 3a and 3b (or counter doctor blade) operating in directions opposites.
  • the support means 8, rigidly fixed to the base 6, are two half-cylinders in extension.
  • the reliefs 14a, 14b are located on their external faces.
  • the branches 11a, 11b each have a general shape of quarter cylinder and carry the reliefs 13a, 13b at their free end on the internal face. They have a curvature and a dimension such that they envelop the support means 8 from the outside.
  • a relief 14a, 14b is delimited by a concave bottom corresponding to a little more than a half-cylinder and, on both sides, a concave part and a convex part deviating towards an opening.
  • a relief 13a, 13b has the shape of a curved finger terminated by a ball joint projecting towards the lower surface which can cooperate with the concave bottom of the relief 14a, 14b.
  • the lower surface and upper surface of the finger can be tangent with the convex and concave parts of the relief 14a, 14b in the extreme positions of the branches 11a, 11b.
  • the reliefs 14a, 14b are separated by a constant angular pitch corresponding to the angular value of the adjustment of the inclination of the doctor blade 3 (in this case 4 ° 30 ').
  • a doctor blade 3 a (FIG. 1) two outer layers 54, on either side, containing molybdenum disulphide capable of reducing friction or any other equivalent material and at least one more rigid inner layer 55, in particular reinforced and / or including one or more copolymers.
  • a machine including a scraping assembly 1 (FIG. 4) comprises a table 56, above which is mounted the scraping assembly 1. Lateral supports 57 allow the fixing of a screen printing screen 58 on which comes to bear the doctor blade 3. The reinforcing plates 27 are located near the supports 57.
  • locating means are provided for placing the doctor blade with the desired inclination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Screen Printers (AREA)
EP93401406A 1992-06-05 1993-06-02 Rakelhalter, insbesondere für eine Siebdruckmaschine Withdrawn EP0576315A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR929206869A FR2691925B1 (fr) 1992-06-05 1992-06-05 Porte-racle destine notamment a une machine de serigraphie, ensemble de raclage et procede de montage d'une racle et de reglage d'un tel porte-racle.
FR9206869 1992-06-05

Publications (1)

Publication Number Publication Date
EP0576315A1 true EP0576315A1 (de) 1993-12-29

Family

ID=9430497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401406A Withdrawn EP0576315A1 (de) 1992-06-05 1993-06-02 Rakelhalter, insbesondere für eine Siebdruckmaschine

Country Status (3)

Country Link
US (1) US5345862A (de)
EP (1) EP0576315A1 (de)
FR (1) FR2691925B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996031350A1 (de) * 1995-04-07 1996-10-10 Rk Siebdrucktechnik Gmbh Rakel insbesondere für den siebdruck

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY112503A (en) * 1995-03-01 2001-06-30 Tani Electronics Ind Co Ltd Screen printing method and apparatus therefor
US5660632A (en) * 1995-12-15 1997-08-26 Jnj Industries, Inc. Apparatus for spreading material onto a substrate
FR2746704B1 (fr) * 1996-03-29 1998-05-22 Fimor Tete de raclage, notamment pour serigraphie
JP2896343B2 (ja) * 1996-05-14 1999-05-31 谷電機工業株式会社 印刷用スキージー装置
US5887312A (en) * 1996-09-12 1999-03-30 Transition Automation, Inc. Clamping assembly for squeegee blade with pin referencing and bar clamping
US6112657A (en) * 1999-08-19 2000-09-05 Bill; Ralph J. Squeegee attachment system for a printing machine
US20040025721A1 (en) * 2002-08-06 2004-02-12 Pingel Jeffrey S. Flexible squeegee

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH376083A (de) * 1960-03-02 1964-03-31 Luescher Ag Geb Rakelhalter für Rakelgummi für Film- oder Siebdruck
DE8709832U1 (de) * 1987-07-17 1988-03-17 Jong-Hwan, Lee, Seoul, Kr
EP0167906B1 (de) * 1984-07-07 1990-12-05 Rudolf August Kürten Druckkopf für eine Siebdruckmaschine
US4989511A (en) * 1989-05-26 1991-02-05 Flexible Products Company Handle for a squeegee

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034659B (de) * 1956-04-05 1958-07-24 Siebdruckgeraete Von Holzschuh Vorrichtung zum Verschieben einer Rakel eines Schablonendruckers mit ebener Druckform
US3071069A (en) * 1961-03-14 1963-01-01 Dry Screen Process Inc Screen printing apparatus
GB1498267A (en) * 1975-05-22 1978-01-18 Samco Strong Ltd Screen printing machines
US4102266A (en) * 1977-03-18 1978-07-25 James A. Black Squeegee, ink scoop and flood blade assembly
JPS56120349A (en) * 1980-02-27 1981-09-21 Dainippon Printing Co Ltd Doctor blade for printing gravure
JPH0628956B2 (ja) * 1986-04-01 1994-04-20 株式会社パイロット スクリ−ン印刷機におけるスキ−ジング装置
US4841854A (en) * 1987-10-06 1989-06-27 American Screen Printing Equipment Company Adjustable squeegee apparatus
US5078063A (en) * 1990-12-19 1992-01-07 Ag Communication Systems Corporation Precision mechanical squeegee holding assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH376083A (de) * 1960-03-02 1964-03-31 Luescher Ag Geb Rakelhalter für Rakelgummi für Film- oder Siebdruck
EP0167906B1 (de) * 1984-07-07 1990-12-05 Rudolf August Kürten Druckkopf für eine Siebdruckmaschine
DE8709832U1 (de) * 1987-07-17 1988-03-17 Jong-Hwan, Lee, Seoul, Kr
US4989511A (en) * 1989-05-26 1991-02-05 Flexible Products Company Handle for a squeegee

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPIL Week 8144, Derwent Publications Ltd., London, GB; AN 81-80888D & JP-A-56 120 349 (DAINIPPON PRINTING KK) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996031350A1 (de) * 1995-04-07 1996-10-10 Rk Siebdrucktechnik Gmbh Rakel insbesondere für den siebdruck

Also Published As

Publication number Publication date
FR2691925B1 (fr) 1994-08-05
US5345862A (en) 1994-09-13
FR2691925A1 (fr) 1993-12-10

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