EP0315818B1 - Siebdruckmaschine - Google Patents

Siebdruckmaschine Download PDF

Info

Publication number
EP0315818B1
EP0315818B1 EP88117631A EP88117631A EP0315818B1 EP 0315818 B1 EP0315818 B1 EP 0315818B1 EP 88117631 A EP88117631 A EP 88117631A EP 88117631 A EP88117631 A EP 88117631A EP 0315818 B1 EP0315818 B1 EP 0315818B1
Authority
EP
European Patent Office
Prior art keywords
screen
frame
screen frame
printing machine
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
EP88117631A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0315818A2 (de
EP0315818A3 (en
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 AT88117631T priority Critical patent/ATE93769T1/de
Publication of EP0315818A2 publication Critical patent/EP0315818A2/de
Publication of EP0315818A3 publication Critical patent/EP0315818A3/de
Application granted granted Critical
Publication of EP0315818B1 publication Critical patent/EP0315818B1/de
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
    • B41F15/08—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
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/36—Screens, Frames; Holders therefor flat

Definitions

  • the invention relates to a screen printing machine with a flat printing table and with a squeegee which is guided to and fro in a frame above the printing table, and with a screen frame which is arranged pivotably about a pivot axis arranged in a central plane running perpendicular to the squeegee movement and with devices for lifting on both sides of the pivot axis is provided.
  • a screen printing machine with a large printing table is known, which is to solve the task of compensating for the sag of the screen.
  • the screen frame is provided at both end parts with lifting rods which are controlled depending on the movement of the squeegee in such a way that the screen frame can be raised at one end while the other end remains below.
  • the sieve frame therefore performs a rocking movement over an apex in the middle of the frame.
  • a screen printing machine with a pivotable screen frame is also known from EP-A 0 208 669.
  • the sieve frame is only held at the ends and its movement is controlled with the aid of a pneumatic cylinder acting at one end.
  • the object of the invention is therefore to provide a screen printing machine of the type mentioned at the outset, by means of which the screen frame can be raised for both directions of squeegee movement without great control effort.
  • the pivot axis is formed by two shaft journals projecting outwards from the sieve frame, which are each mounted in a vertically displaceable link, that the link is laterally guided on a vertical guide rail which is fixedly arranged on the frame, and that the means for lifting consist of slides which can be moved parallel to the longitudinal edge of the sieve frame and which are provided with lifting slopes on which lateral guide pins of the sieve frame run.
  • a printing error can also be compensated if, for example, in the manufacture of printed circuit boards, printing has to take place in both directions by means of a double squeegee movement.
  • the solution according to the invention also offers the advantage that, due to the pivoting movement of the screen frame around its center, the part of the screen frame lying in front of or behind the pivot axis, as seen in the squeegee movement, performs different relative movements with respect to the printing table, which are opposite to each other. These different movements that effect in an opposite displacement of parts of the screen with respect to the printing table, allow in a simple manner to compensate for the geometric printing error, which also has different signs over the length of the screen frame.
  • the link is provided with two rollers which rest against the side of the guide rail. This makes it possible to keep the distance of the screen frame to the printing table in the end region of the squeegee movement constant despite the pivoting movement about the central axis.
  • the lifting bevels are part of a slot guide in the slide, which consists of two slot parts enclosing an obtuse angle, the length of which is in each case the same length parallel to the printing table.
  • a screen printing machine is shown, the printing table (1) is arranged in a manner not shown within a machine frame (2).
  • the machine frame (2) consists essentially of a base frame with supports (20) which can be set up on the floor and in which guide columns (23) are held, to which two doctor guide bars (21) running parallel to one another are connected.
  • a squeegee can be moved back and forth in the direction of the arrows (5) parallel to the printing table (1) between these squeegee guide bars (21).
  • a guide (26) is also fixedly arranged on the frame (2) and excavation rails (22) guided on this guide (26) are provided, between which a screen frame (3) is held with a pressure screen, not shown.
  • the screen frame (3) is provided with a pivot axis (4) which runs through the central plane (6) of the screen frame (3) which is perpendicular to the squeegee movement (5).
  • This pivot axis (4) is formed by two in the area of the opposite longitudinal sides (3a) of the swivel frame (3), on the excavation rails (22) with a flange (8a) and outwardly projecting shaft journals (8), only one of which is shown in Fig. 2.
  • the link (9) is provided with four outwardly projecting rollers (11), two of which lie on the left and right on the outer edges of the guide rail (10) and thus the vertical guidance of the link (9) and thus the swivel axis (4) secure the sieve frame (3).
  • a slot-like recess (22a) is provided in the area of the shaft journals (8), which runs perpendicular to the sieve frame (3) and adjusts the shaft journals (8) and Backdrop (9) allowed in height. This allows the height of the swivel axis (4) to be changed compared to the sieve frame (3).
  • Plate-like slide guides (16) which are arranged in the region of the ends of the printing table (1) on both sides in the direction of the squeegee movement (5), are fixed to the opposite squeegee guide bars (21). These slide guides (16) are each equipped with slot-like longitudinal guides (25) which each run parallel to the printing table (1). In both of these slot-like longitudinal guides (25) engage sliding blocks (24) which are firmly connected to plate-like slides (12, 12 '). The carriage (12, 12 ') can be moved parallel to the printing table (1) in this way.
  • a slot guide (15) is provided, which consists of two at an obtuse angle sloping parts 15a and 15b).
  • the slot part (15a) is designed to run parallel to the surface of the printing table (1).
  • the slot part (15b) rises relative to the printing table (1) at an angle to the outside and forms a lifting slope (13), which will be discussed later. Measured parallel to the printing table (1), the two slot parts (15a and 15b) have the same length.
  • both slot guides (15 and 15 ') engage guide pins (14) which are arranged in the region of the ends of the printing table (1) on the excavation rails (22) on which the screen frame (3) is held.
  • the screen printing machine according to the invention can also achieve a pivoting movement of the screen frame (3) in a clockwise direction if, for example, printing is to be carried out by a doctor blade movement opposite to the arrow (28) in FIG. 4. The conditions are then the same, but with the opposite sign.
  • the new screen printing machine can therefore be used for screen printing in two different doctor blade directions without having to give up the advantages of lifting the screen frame behind the doctor blade and the advantages of a certain error compensation.

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)
EP88117631A 1987-11-09 1988-10-22 Siebdruckmaschine Expired - Lifetime EP0315818B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88117631T ATE93769T1 (de) 1987-11-09 1988-10-22 Siebdruckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3738038 1987-11-09
DE19873738038 DE3738038A1 (de) 1987-11-09 1987-11-09 Siebdruckmaschine

Publications (3)

Publication Number Publication Date
EP0315818A2 EP0315818A2 (de) 1989-05-17
EP0315818A3 EP0315818A3 (en) 1990-07-04
EP0315818B1 true EP0315818B1 (de) 1993-09-01

Family

ID=6340134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88117631A Expired - Lifetime EP0315818B1 (de) 1987-11-09 1988-10-22 Siebdruckmaschine

Country Status (5)

Country Link
US (1) US4989510A (enrdf_load_stackoverflow)
EP (1) EP0315818B1 (enrdf_load_stackoverflow)
JP (1) JPH01156064A (enrdf_load_stackoverflow)
AT (1) ATE93769T1 (enrdf_load_stackoverflow)
DE (2) DE3738038A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5070782A (en) * 1990-06-07 1991-12-10 Tokai Shoji Co., Ltd. Screen printer
JP2777754B2 (ja) * 1991-04-02 1998-07-23 東芝機械株式会社 印刷装置
DE10149389C1 (de) 2001-09-27 2003-02-27 Thieme Gmbh & Co Kg Oberwerk für eine Siebdruckmaschine
ITMI20050499A1 (it) * 2005-03-24 2006-09-25 Siasprint S R L Macchina e metodo per la stampa serigrafica

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659523A (en) * 1970-11-16 1972-05-02 Modern Decorating Co Screen printing machine for round and flat articles
SE398076B (sv) * 1976-09-28 1977-12-05 Svecia Silkscreen Maskiner Ab Stenciltryckmaskin
SE416910B (sv) * 1978-01-30 1981-02-16 Svecia Silkscreen Maskiner Ab Stenciltryckmaskin med stort tryckbord
US4254707A (en) * 1979-05-02 1981-03-10 Itron, Inc. Screen printing apparatus with screen peel-off from work
SE448424B (sv) * 1985-07-10 1987-02-23 Svecia Silkscreen Maskiner Ab Stenciltryckmaskin med ett fram och ater rorligt rakelarrangemang
US4854229A (en) * 1987-06-10 1989-08-08 E. I. Dupont De Nemours And Company Screen printer apparatus

Also Published As

Publication number Publication date
JPH01156064A (ja) 1989-06-19
DE3738038C2 (enrdf_load_stackoverflow) 1991-01-31
ATE93769T1 (de) 1993-09-15
DE3738038A1 (de) 1989-05-18
US4989510A (en) 1991-02-05
EP0315818A2 (de) 1989-05-17
DE3883710D1 (de) 1993-10-07
EP0315818A3 (en) 1990-07-04

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