EP0884183B1 - Equipement de surveillance dans un dispositif automatique de sérigraphie - Google Patents

Equipement de surveillance dans un dispositif automatique de sérigraphie Download PDF

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Publication number
EP0884183B1
EP0884183B1 EP98401395A EP98401395A EP0884183B1 EP 0884183 B1 EP0884183 B1 EP 0884183B1 EP 98401395 A EP98401395 A EP 98401395A EP 98401395 A EP98401395 A EP 98401395A EP 0884183 B1 EP0884183 B1 EP 0884183B1
Authority
EP
European Patent Office
Prior art keywords
printing
screen printing
frame
monitoring equipment
screen
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
EP98401395A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0884183A3 (fr
EP0884183A2 (fr
Inventor
Knut Dahlhoff
Engin Yaman
Benno Patocki
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.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain 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 Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP0884183A2 publication Critical patent/EP0884183A2/fr
Publication of EP0884183A3 publication Critical patent/EP0884183A3/fr
Application granted granted Critical
Publication of EP0884183B1 publication Critical patent/EP0884183B1/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
    • B41F15/16—Printing tables
    • 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
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/14—Automatic control of tripping devices by feelers, photoelectric devices, pneumatic devices, or other detectors

Definitions

  • the present invention relates to an automatic screen printing device for printing glazing, comprising a frame on which a printing plate surmounted by a screen printing frame provided means of vertical translation, and a movable squeegee capable of driving ink by screen printing through the lower part of the printing frame.
  • the screen printing technique is widely used during manufacturing automotive glass.
  • the manufacture of rear glasses that can to be electrically heated requires, for the application of a heating conductors from conductive screen printing ink electricity and for printing a decorative frame from ink bake opaque, two automatic screen printing devices each followed by a dryer, which are arranged one behind the other on the line of manufacturing.
  • optical monitoring equipment is already known, for example by detection by means of a laser beam (see JP-A-5254089) or a camera (see DE-A-3 928 527 ).
  • the object of the invention is to propose an automatic device for serigraphy of the type mentioned in the preamble so that the disturbances, during which the screen printing chassis is damaged or destroyed, are detected automatically and on time and that appropriate measures can be taken to prevent damage to them result.
  • the evaluation circuit When detecting a foreign object in the interval monitored by the aforementioned equipment, the evaluation circuit interrupts printing.
  • the optical surveillance equipment consists of a light curtain consisting of a row of light barriers individual, each of these dams comprising in particular a transmitter and a receiver.
  • the distance between neighboring light barriers determines in this case the size of foreign bodies that can be detected.
  • the monitoring device optic consists of a CCD camera, with evaluation software suitable which monitors the intermediate interval between the print bed and the lower part of the screen printing frame in front of a background defined.
  • Optical monitoring equipment is preferably attached to the tray printing. It is however also possible to mount it on the frame of the aforementioned device, on the screen printing frame or on a frame clean.
  • the interval between the print bed and the print frame screen printing is monitored by optical monitoring equipment to detect foreign bodies not only during the printing process described above, but also during the lifting of the chassis printing.
  • This is particularly the case for screen printing ink when drips onto the printing table top through a tear in the form of screen printing.
  • a tear in the screen printing fabric of the form of serigraphy can result from the permanent friction of the squeegee on the face upper or contact of sharp edges of the glazing with the underside of the screen printing frame. Of course, further destruction large extent of the chassis are also detected in the fabric of serigraphy then relaxed.
  • the optical surveillance equipment After detection of the foreign body, the optical surveillance equipment sends a signal to the evaluation circuit which is connected to the control of the automatic screen printing device.
  • the evaluation circuit which can be integrated in the monitoring equipment, and the control are programmed so that the monitoring equipment is only activated when the chassis form is in the raised position, so that a single body stranger causes immediate interruption of the printing operation and not not a moving machine part of the screen printing device.
  • a screen printing machine suitable for printing glazing 7 essentially comprises a printing table consisting of a frame 1 and a printing plate 2, as well as a printing element, arranged above of the printing plate, consisting of the squeegee 4 and a frame 3 'screen printing on which is stretched a 3 "stencil screen. 3 'screen printing and 3 "stencil screen together form the printing frame screen-printed 3 which is removably enclosed in a retaining frame 12.
  • the drive and guide means of the squeegee 4 are not shown here and are of classical construction.
  • the retaining frame 12, in which the screen printing frame 3 is mounted, is connected to the plate printing 2 by means of cylinder and piston cylinders 6 and their 6 'piston rods.
  • Fasteners 8 are provided on the printing plate 2, to which, on one side of the screen printing machine, is preferably fixed on all of its lateral length, a row of transmitters 9 arranged one behind the other. On the opposite side is fixed a row of receivers 10 associated with transmitters 9.
  • the transmitters 9 send light beams 11 which cross the gap A located between the printing plate 2 and the part bottom of the screen printing frame 3 and which are received by the receivers 10.
  • the light beams 11 therefore form a light curtain more or less closed.
  • a distance between the light beams 11 of approximately 5 to 8 mm has proven to be adequate to be sure to detect all bodies foreigners.
  • the monitoring equipment is activated by the integrated evaluation circuit in receivers 10, which is connected to the control of the PLC screen printing and is programmed so that interval monitoring intermediate A between the screen printing frame 3 and the plate 2 starts from the moment the bounding surface bottom of the screen printing frame 3 crosses, when uplift after printing, the light beams 11 and ends at when the boundary surface of the 3 "stencil screen plunges again in the light beams 11, when lowering before printing. Yes, during this defined period of time, one of the light beams 11 is interrupted, either by the loose fabric of a damaged 3 "stencil screen or by dripping screen printing ink 5, a signal is sent to the order of the screen printing machine and the printing cycle is immediately automatically interrupted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Alarm Systems (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Burglar Alarm Systems (AREA)
EP98401395A 1997-06-12 1998-06-10 Equipement de surveillance dans un dispositif automatique de sérigraphie Expired - Lifetime EP0884183B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19724829 1997-06-12
DE19724829A DE19724829C2 (de) 1997-06-12 1997-06-12 Siebdruckautomat zum Bedrucken von Glasscheiben

Publications (3)

Publication Number Publication Date
EP0884183A2 EP0884183A2 (fr) 1998-12-16
EP0884183A3 EP0884183A3 (fr) 1999-05-26
EP0884183B1 true EP0884183B1 (fr) 2002-10-02

Family

ID=7832260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401395A Expired - Lifetime EP0884183B1 (fr) 1997-06-12 1998-06-10 Equipement de surveillance dans un dispositif automatique de sérigraphie

Country Status (6)

Country Link
EP (1) EP0884183B1 (es)
JP (1) JPH1148442A (es)
AT (1) ATE225258T1 (es)
DE (2) DE19724829C2 (es)
ES (1) ES2184205T3 (es)
PT (1) PT884183E (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001062995A (ja) * 1999-08-30 2001-03-13 Minami Kk スクリーン印刷機
JP5263838B2 (ja) * 2009-12-14 2013-08-14 シャープ株式会社 印刷装置、および検査方法
JP5488272B2 (ja) * 2010-07-08 2014-05-14 パナソニック株式会社 スクリーン印刷機及びスクリーン印刷機における異物検出方法
CN103857190A (zh) * 2014-01-21 2014-06-11 田茂福 Fpc电路板的制备方法
CN104842633B (zh) * 2015-04-17 2017-12-26 东莞市优印精密自动化设备有限公司 一种自动丝印设备及其丝印方法
CN106364143B (zh) * 2016-10-28 2018-12-11 东莞市意艾迪数控科技有限公司 一种全自动丝印机及其生产线
CN106696445B (zh) * 2016-11-18 2019-06-21 江苏智子自动化科技有限公司 丝网印刷机的八柱升降装置
CN109397851B (zh) * 2018-11-16 2023-10-13 罗博特科智能科技股份有限公司 一种可调整印刷装置
CN112721441B (zh) * 2020-12-23 2022-05-06 江苏省高淳印刷股份有限公司 一种印刷机印刷质量检测装置
CN113910793B (zh) * 2021-11-05 2023-04-25 东莞市中麒光电技术有限公司 Led显示模块制作方法及led显示模块
CN114523759B (zh) * 2022-02-25 2023-05-16 云南大学滇池学院 一种丝网印刷机调压防松装置
CN115366535A (zh) * 2022-08-22 2022-11-22 江苏润阳世纪光伏科技有限公司 一种网版爆版实时监控装置及监控方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268545A (en) * 1979-07-30 1981-05-19 Libbey-Owens-Ford Company Method of and apparatus for printing a pattern on a substrate
US4893556A (en) * 1987-02-23 1990-01-16 Tdk Corporation Screen printer with double doctor/squeegee, printing pressure sensor and aligning mechanism
DE3928527A1 (de) * 1989-08-29 1991-03-14 Ind Siebdruck Systeme Neckarwe Flachbett-siebdruckmaschine zum bedrucken einer elektrischen leiterplatte
JPH05254089A (ja) * 1992-03-13 1993-10-05 Hitachi Ltd スクリーン印刷機
DE9203463U1 (es) * 1992-03-14 1992-06-11 Werner Thieme Gmbh & Co Kg Maschinenfabrik, 7835 Teningen, De
DE9218279U1 (de) * 1992-06-03 1993-10-28 Ver Glaswerke Gmbh Siebdruckmaschine zum Bedrucken von Glasscheiben

Also Published As

Publication number Publication date
ATE225258T1 (de) 2002-10-15
PT884183E (pt) 2003-02-28
DE19724829A1 (de) 1998-12-17
DE19724829C2 (de) 1999-03-25
DE69808376D1 (de) 2002-11-07
ES2184205T3 (es) 2003-04-01
EP0884183A3 (fr) 1999-05-26
EP0884183A2 (fr) 1998-12-16
JPH1148442A (ja) 1999-02-23
DE69808376T2 (de) 2003-07-03

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