EP0315817B1 - Machine pour impression sérigraphique - Google Patents

Machine pour impression sérigraphique Download PDF

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Publication number
EP0315817B1
EP0315817B1 EP88117630A EP88117630A EP0315817B1 EP 0315817 B1 EP0315817 B1 EP 0315817B1 EP 88117630 A EP88117630 A EP 88117630A EP 88117630 A EP88117630 A EP 88117630A EP 0315817 B1 EP0315817 B1 EP 0315817B1
Authority
EP
European Patent Office
Prior art keywords
doctor blade
carrier
printing machine
screen printing
squeegee
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
EP88117630A
Other languages
German (de)
English (en)
Other versions
EP0315817A3 (en
EP0315817A2 (fr
Inventor
Karl Kölblin
Peter Geiger
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.)
Werner Thieme GmbH and Co KG Maschinenfabrik
Original Assignee
Werner Thieme GmbH and Co KG Maschinenfabrik
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 Werner Thieme GmbH and Co KG Maschinenfabrik filed Critical Werner Thieme GmbH and Co KG Maschinenfabrik
Priority to AT88117630T priority Critical patent/ATE93771T1/de
Publication of EP0315817A2 publication Critical patent/EP0315817A2/fr
Publication of EP0315817A3 publication Critical patent/EP0315817A3/de
Application granted granted Critical
Publication of EP0315817B1 publication Critical patent/EP0315817B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41F15/46—Squeegees or doctors with two or more operative parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0804—Machines for printing sheets
    • B41F15/0813—Machines for printing sheets with flat screens
    • B41F15/0818—Machines for printing sheets with flat screens with a stationary screen and a moving squeegee
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0831—Machines for printing webs
    • B41F15/0845—Machines for printing webs with flat screens
    • B41F15/085—Machines for printing webs with flat screens with a stationary screen and a moving squeegee

Definitions

  • the invention relates to a screen printing machine with a printing table and with a squeegee that can be moved over it, which is held adjustable with a squeegee holder on a carrier running in guide rails via guide devices both at a distance and at an angle to the printing table and can be pressed against the printing table via printing cylinders.
  • a screen printing machine in which the printing table can be pivoted by means of a lifting and lowering device in order to enable the screen printing stencil to be released more easily from the printed matter after the squeegee has passed over the corresponding point of the printed matter.
  • several hydraulic cylinders are provided, which on the one hand allow the printing table to be pivoted and on the other hand allow the pivot axis to be shifted in height, so that the entire printing table can also be lowered and raised.
  • the invention has for its object to design a screen printing machine of this type so that the position of the doctor blade on the carrier and the size of the doctor blade has no influence on the print quality.
  • the support is mounted with both ends directly in the guide rails, and that the printing cylinder double-acting printing cylinder and as longitudinally displaceably attached to the support and provided with swivel guides for the squeegee guide devices for the squeegee are designed.
  • the height adjustment devices for the carrier at its ends can be dispensed with.
  • the devices for lifting the carrier on the return stroke can also be omitted and it is no longer necessary to adjust the angle of the doctor blade by pivoting the entire carrier.
  • the arrangement of the pressure cylinders designed as guide devices directly on the carrier is sufficient. Since the same pressure can be applied to these guide cylinders, the squeegee holder which is now attached directly to them is pressed uniformly against the printing table with the squeegee rubber, without any bending of the carrier which may occur in particular at high pressures and long squeegees. The squeegee holder itself is not bent with the new version.
  • the angle adjustment of the squeegee can also be carried out in a very simple manner without the support having to be stored in its guide rails in a complex manner.
  • the invention therefore enables a particularly simple design for the doctor device, which also has the advantage that the lifting movement of the doctor can be carried out by the guide cylinders. In this way, a stable straight guidance of the carrier can be achieved, which is not influenced by adjusting devices between the rails and the carrier. The guidance can therefore be very precise.
  • the print quality can be improved since any bending of the carrier has no influence.
  • it does not matter whether or not the doctor blade is arranged symmetrically to the carrier in the new embodiment. Due to the complete decoupling of the squeegee suspension from the carrier, deformations of the carrier have no influence on the contact pressure of the squeegee. The entire arrangement can also be made much lighter by the new design. The manufacturing effort is reduced.
  • the carrier can advantageously be designed as a hollow profile carrier, for example made of light metal, which is very stable but nevertheless light.
  • This hollow profile support can be provided with grooves on at least one outside, in which the pressure cylinders accommodated in brackets can be clamped in a longitudinally displaceable manner.
  • the swivel guide can consist of an arcuate link guide which is attached to the lower end of the piston rod of the pressure cylinder and which is provided on the counterpart which can be displaced in the link with a clamping profile piece which corresponds to the profile of the doctor carrier to be attached and the profile itself known fastening claws. It becomes possible to move the pivot axis of the link guide in the area of the squeegee edge facing the printing table, so that when the angle setting is changed, the inclination of the squeegee rubber to the table is changed, but not the position of the squeegee edge in the direction of the squeegee movement to the printing table. It is therefore not necessary to readjust the carrier starting position when the squeegee changes its angular position.
  • the same pressure cylinders can also be used to guide the pre-doctor.
  • the pressure cylinder assigned to the pre-doctor can be provided with a height adjustment device, which can consist in a simple manner of an adjusting or counter nut which corresponds to the End of the cylinder protruding from a correspondingly designed piston rod is assigned to the pressure cylinder.
  • the doctor device of a screen printing machine which has a printing table (1) which is held in a machine frame in a manner not shown.
  • a printing table (1) which is held in a machine frame in a manner not shown.
  • two guide rails (5) which run parallel to one another and to the sides of the printing table (1) and which can consist of side members to which strip-like rails (21) are attached on the sides facing one another are.
  • Guide rollers (22) of a carrier (6) which spans the entire printing table (1) and run essentially parallel to the printing table (1), run on these rails (21).
  • the rollers (22), which run above and below the rails (21), are connected directly to the end faces of the carrier (6).
  • the carrier (6) is rigidly guided in this way between the guide rails (5).
  • pressure cylinders (7 and 7 ') are provided, which are arranged according to FIG. 2 on the two transverse sides of the carrier (6).
  • a squeegee holder (4) with a squeegee rubber (3) is fastened to this swivel guide (8) with the aid of clamping pieces (23).
  • a doctor blade (18) is arranged, the position of which relative to the printing table (1) can be adjusted by means of a height adjustment device assigned to the printing cylinder (7').
  • the carrier (6) is moved back and forth by the drive devices (not shown) over the printing table (1) in the direction of the arrows (24).
  • the pre-squeegee (18) or the squeegee carrier (4) with the squeegee rubber (3) is pulled upwards, which is done by the action of the double-acting pressure cylinder (7, 7 ') in a known working rhythm.
  • the carrier (6) is designed as a hollow profile, which is provided on the two sides arranged in the direction of movement (24) with grooves (9) of T-shaped cross section into the sliding blocks (10) can be used, which can press a clamping bridge (11) against a flange (25a) of the cylinder (7) and thus hold the cylinder (7) longitudinally displaceably in the direction of the grooves (9).
  • the clamping bridge (11) is connected to the sliding blocks (10) via screw bolts (26). It can be pushed away from the flange (25a) by the toggle screw (28) with the threaded shaft (27), so that the position of the holder (11) on the carrier (6) is thereby secured.
  • the pressure cylinders (7) - analogous to the pressure cylinders (7 ') - are designed as double-acting pneumatic cylinders, which are each provided with two pressure connections (29 and 30), which are above and below the Pistons (31) are provided.
  • the piston (31) continues on both sides in a piston rod (17) which is guided continuously in the bearing bushes (32) of the cylinder (33) and which consists of two screwed sections between which the piston (31) is held.
  • a square piece (41) is pressed onto the end of the piston rod protruding from the bottom of the cylinder (33), on which a frame (16) can be pivoted about the axis of the pin (34) with the aid of a pin (34).
  • the clamping profile pieces (14) of the two pressure cylinders (7) shown in Fig. 1 are facing away from each other. As can be seen from FIG.
  • clamping pieces (23) are provided with sliding pieces (38, 39) adjustable against each other by a screw movement caused by the toggle screw (37), which slide on roof-like inclined surfaces (40) of the clamping profile piece (14) and towards each other movement, move the clamping piece (23) away from the doctor blade carrier (4) and thereby press the doctor blade carrier (4) against the clamping profile piece (14).
  • the squeegee holder (4) with the squeegee rubber (3) which is firmly connected to the piston rods (17) of the cylinders (7) can be adjusted in its angle to the printing table in a simple manner by loosening the clamping screw (36) (Fig 4) the desired pivot adjustment of the counterpart (13) to the backdrop (12) is carried out, after which the clamping screw (36) is tightened again.
  • the design of the link (12) and the counterpart (13) is carried out so that the pivot axis (15) of the link (12) - see Fig. 6 - approximately on the edge (3a) of the squeegee rubber (3 ) runs.
  • a pivoting movement of the doctor blade thereby causes an angle change in the setting of the doctor blade rubber to the printing table, but not a change in the relative position of the doctor blade edge (3a) to the printing table.
  • With an angular adjustment of the squeegee rubber it is therefore not necessary to readjust the position of the support relative to the printing table for the start of the squeegee movement.
  • the hollow profile carrier (6) can consist of light metal. Since it is mounted directly on the guide rails (5), it can be easily designed. Its deflection in the case of a large squeegee pressure does not matter, since the squeegee can be applied to the printing table (1) with uniform pressure via the two printing cylinders (7), regardless of whether the support (6) has bent or not. It is therefore also possible, as shown in FIG. 1, not to arrange the doctor blade symmetrically with respect to the center of the carrier (6) without fear of any disadvantages in the quality of the screen printing produced. Since the pressure cylinder (7) or (7 ') are relatively simple and light in construction, and since the doctor holder (4) is not attached to a continuous support part, but only to clamping profile pieces of short length, the new design can be a very lightweight design can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Claims (10)

  1. Machine d'impression sérigraphique comprenant une table d'impression et sur celle-ci un racloir (2) mobile, dans la direction de guidage monté sur un support (6) par l'intermédiaire d'un support de racloir (4) mobile dans des rails de guidage (5), maintenu incliné, de manière réglable par rapport à la table d'impression et sur un cylindre de pression (7) appliquant le racloir contre la table d'impression caractérisée en ce que le support (6) repose par ses deux extrémités dans les rails de guidage (5), le cylindre de pression (7) étant un cylindre à double effet, un dispositif de guidage étant prévu pour le support (6) fixée en position longitudinale, le support de racloir (4) étant monte avec des guides articulés pour le racloir (2).
  2. Machine d'impression sérigraphique selon la revendication 1, caractérisée en ce que le support (6) est un support profilé creux pourvu d'une rainure (9)sur au moins l'un de ses cotés extérieur, dans lequel le cylindre de pression (7) est assemblé au moyen de glissières à patins (10).
  3. Machine d'impression sérigraphique selon l'une des revendications 1 ou 2, caractérisée en ce que les cylindres de pression (7) sont fixés sur des supports (11) qui sont prévus avec les glissières à patin (10).
  4. Machine d'impression sérigraphique selon la revendication 1, caractérisée en ce que les guides articulés (8) consistent en un coulisseau (12) en forme d'arc de cercle qui est monté coulissant dans une butée en forme d'arc de cercle (13), une pièce profilée de montage (14) pour le support de racloir (4) étant prévue sur le côté.
  5. Machine d'impression sérigraphique selon la revendication 4, caractérisée en que l'axe d'articulation (15) du coulisseau (12) coincide sensiblement avec la surface supérieure de la table d'impression (1) l'arête (3a) du racloir se déplaçant dans la région de la table d'impression (1).
  6. Machine d'impression sérigraphique selon l'une des revendications 4 et 5, caractérisée en ce que le coulisseau (12) est monté à l'extrêmité libre inférieure de la tige (17) du cylindre de pression (7) par un anneau de fixation (16).
  7. Machine d'impression sérigraphique selon la revendication 4, caractérisée en ce que la pièce profilée de montage (14) de la butée (13) s'étend parallèlement à l'axe d'articulation (15) du coulisseau (12).
  8. Machine d'impression sérigraphique selon la revendication 1, caractérisée en ce que la course (h) du cylindre de pression (7) correspond sensiblement à la position écartée désirée du racloir (2).
  9. Machine d'impression sérigraphique selon la revendication 1, caractérisée en ce que sur le support (6) des deux côtés des cylindres de pression (7, 7') sont agencés des guidages pour un racloir (2) et un préracloir (18) et en ce que le cylindre de pression (7') est guidé avec le préracloir (18) au moyen d'un dispositif de réglage de hauteur (19).
  10. Machine d'impression sérigraphique selon la revendication 9, caractérisée en ce que les cylindres de pression (7, 7') sont munis des deux côtés de cylindres avec des tiges de piston externes (17) et en ce que le dispositif de réglage en hauteur est disposé à la partie supérieure du cylindre à l'extrêmité sortante de la tige de piston (17) et consiste en un écrou de réglage (20) qui limite la course vers le bas.
EP88117630A 1987-11-09 1988-10-22 Machine pour impression sérigraphique Expired - Lifetime EP0315817B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88117630T ATE93771T1 (de) 1987-11-09 1988-10-22 Siebdruckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3738039 1987-11-09
DE19873738039 DE3738039A1 (de) 1987-11-09 1987-11-09 Siebdruckmaschine

Publications (3)

Publication Number Publication Date
EP0315817A2 EP0315817A2 (fr) 1989-05-17
EP0315817A3 EP0315817A3 (en) 1990-07-18
EP0315817B1 true EP0315817B1 (fr) 1993-09-01

Family

ID=6340135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88117630A Expired - Lifetime EP0315817B1 (fr) 1987-11-09 1988-10-22 Machine pour impression sérigraphique

Country Status (5)

Country Link
US (1) US4995316A (fr)
EP (1) EP0315817B1 (fr)
JP (1) JPH01156065A (fr)
AT (1) ATE93771T1 (fr)
DE (2) DE3738039A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7503255B2 (en) 2005-05-02 2009-03-17 Thieme Gmbh & Co. Kg Squeegee device with U-shaped carriage

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655334B1 (fr) * 1989-12-06 1992-02-21 Poudres & Explosifs Ste Nale Procede de preparation de chlorures d'acides carboxyliques chlores.
JP2511162B2 (ja) * 1990-02-05 1996-06-26 日立テクノエンジニアリング株式会社 スクリ―ン印刷機
JPH04102843U (ja) * 1990-12-28 1992-09-04 大日本スクリーン製造株式会社 スクリーン印刷機のスキージ装置
FR2700731B1 (fr) * 1993-01-22 1995-04-07 Dubuit Mach Tête de raclage, notamment pour machine à imprimer à l'écran de soie.
US5421256A (en) * 1993-12-16 1995-06-06 Cutcher; Thomas V. Adjustable squeegee assembly for silk screen printers
JPH0852856A (ja) * 1994-08-10 1996-02-27 Kengo Hiruta スクリーン印刷装置
FR2731384B1 (fr) * 1995-03-10 1997-06-06 Tripette & Renaud Machine de serigraphie a raclette interchangeable
US5660632A (en) * 1995-12-15 1997-08-26 Jnj Industries, Inc. Apparatus for spreading material onto a substrate
JP3344895B2 (ja) * 1996-05-28 2002-11-18 松下電器産業株式会社 スクリーン印刷装置およびスクリーン印刷方法
US5722321A (en) * 1996-10-16 1998-03-03 Elexon Ltd. Blade mounting assmbly for sreen printing apparatus
CN1138632C (zh) 1999-05-31 2004-02-18 阿贡高技术有限公司 用于丝网印刷机的印刷桥连装置
JP2002307652A (ja) * 2001-04-12 2002-10-23 Matsushita Electric Ind Co Ltd スクリーン印刷装置
CN1327144C (zh) 2002-02-28 2007-07-18 卢克摩擦片和离合器两合公司 用于一个轴在一个基体上的支承的去耦合装置及径向波状弹簧
DE102004033565B4 (de) * 2004-07-09 2012-10-18 Heinz Walz Textilmaschinen-Handelsgesellschaft Mbh Rakelführung
US20090095174A1 (en) * 2007-10-11 2009-04-16 Roberts Jr Robert Glyn Controlled pressure silk screening device
JP5551925B2 (ja) * 2009-12-08 2014-07-16 富士機械製造株式会社 スキージ装置およびスクリーン印刷機
CN103332012B (zh) * 2013-06-26 2015-09-02 苏州金科信汇光电科技有限公司 印刷机刮刀和回墨刀调节装置
CN104309299A (zh) * 2014-10-22 2015-01-28 上海富之佳机电设备有限公司 丝网印刷机
TWI596013B (zh) * 2014-10-28 2017-08-21 財團法人金屬工業研究發展中心 網版印刷刮刀
DE102015208919A1 (de) * 2015-05-13 2016-11-17 Koenig & Bauer Ag Rakeleinrichtung, Druckwerk sowie Verfahren zum Betreiben einer Rakeleinrichtung
CN105034560B (zh) * 2015-08-26 2017-11-07 安庆市兴丰工贸有限公司 一种自动刮板印刷装置
CN109982854B (zh) * 2016-12-05 2021-09-21 株式会社富士 印刷装置
CN113085350B (zh) * 2021-04-20 2023-03-24 广东捷骏电子科技有限公司 真空印刷装置

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DE1107249B (de) * 1955-12-20 1961-05-25 Frank Sche Eisenwerke Ag Rakelvorrichtung fuer Siebdruckmaschinen
FR1240568A (fr) * 1959-07-27 1960-09-09 Bouchet & Cie Ets Machine sérigraphique automatique perfectionnée
DE1209576B (de) * 1962-12-03 1966-01-27 Detag Verfahren und Vorrichtung zum Drucken nach dem Siebdruckverfahren
US3885493A (en) * 1973-04-03 1975-05-27 Precision Screen Machines Printing head construction for use in a screen printing machine
US4102266A (en) * 1977-03-18 1978-07-25 James A. Black Squeegee, ink scoop and flood blade assembly
JPS55148484A (en) * 1979-05-07 1980-11-19 Sony Corp Device for coating resin on printed board
US4404903A (en) * 1979-12-14 1983-09-20 Cronin John V Automated screener
US4586433A (en) * 1980-11-18 1986-05-06 Precision Screen Machines, Inc. Over the edge printing apparatus with cleaner
DE3207403A1 (de) * 1982-03-02 1983-09-08 Rudolf 7129 Brackenheim Fleischle Antriebsvorrichtung fuer die rakelbewegung in siebdruckmaschinen
FR2585288B1 (fr) * 1985-07-26 1988-08-26 Europ Composants Electron Perfectionnement aux tetes de serigraphie
SE460110B (sv) * 1986-04-15 1989-09-11 Svecia Silkscreen Maskiner Ab Rakelarrangemang foer en stenciltryckmaskin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7503255B2 (en) 2005-05-02 2009-03-17 Thieme Gmbh & Co. Kg Squeegee device with U-shaped carriage

Also Published As

Publication number Publication date
ATE93771T1 (de) 1993-09-15
JPH01156065A (ja) 1989-06-19
DE3738039A1 (de) 1989-05-18
EP0315817A3 (en) 1990-07-18
US4995316A (en) 1991-02-26
DE3883709D1 (de) 1993-10-07
EP0315817A2 (fr) 1989-05-17

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