EP1068953A1 - Siebdruckverfahren und Siebdruckmaschine zur Durchführung des Verfahrens - Google Patents

Siebdruckverfahren und Siebdruckmaschine zur Durchführung des Verfahrens Download PDF

Info

Publication number
EP1068953A1
EP1068953A1 EP00112878A EP00112878A EP1068953A1 EP 1068953 A1 EP1068953 A1 EP 1068953A1 EP 00112878 A EP00112878 A EP 00112878A EP 00112878 A EP00112878 A EP 00112878A EP 1068953 A1 EP1068953 A1 EP 1068953A1
Authority
EP
European Patent Office
Prior art keywords
silk
screen
sheet
doctor
flat support
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Withdrawn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
EP00112878A
Other languages
English (en)
French (fr)
Inventor
Bruno Losi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1068953A1 publication Critical patent/EP1068953A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B41F15/18—Supports for workpieces
    • B41F15/22—Supports for workpieces for single sheets

Definitions

  • the present invention relates to the field of graphic printing machines, and more precisely it relates to a silk-screen printing method with automatic delivery of the sheets.
  • the invention relates to a silk-screen printing machine that carries out this method.
  • Traditional manual silk-screen printing machines provide a fixed flat support for a sheet to print.
  • the flat support is a suction plane for making easier the adhesion of the sheet.
  • a movable support is provided holding a silk-screen for an ink of predetermined colour and an ink spreading means, commonly said doctor and counter-doctor.
  • the movable support of the silk-screen can be closed normally book-like on the flat support about a pivot axis opposite to the operator.
  • the precision of reference points for the sheets is essential in the silk-screen printing with several colours.
  • every sheet to print is arranged on the support plane, and, in the machines with suction plane, the operator commands the vacuum with a pedal. Then, manually, the operator lowers the support so that the silk-screen contacts the sheet. Automatically, or manually, the doctor effects a stroke for spreading the ink over the silk-screen and applying a layer of colour onto the sheet. In this step most of silk screen printing machines provide the silk-screen with a slight inclination towards the above after the passage of the doctor in order to avoid smudges of colour on the sheet.
  • the counter-doctor with a backward movement removes the ink from the silk-screen gathering the ink all on a side and then the operator raises again the movable support, picking up the printed sheet from the flat support and putting it in a drier.
  • the silk-screen printing method according to the invention which can be fixed to a silk-screen printing machine comprising a flat support for a sheet or other article to print, a silk-screen and means for effecting a ink spreading on the silk screen, comprising the steps of:
  • a step is provided of delivering the sheet on a mezzo of transfer, for example a conveyor belt.
  • the ink spreading on the silk-screen is executed by means of a doctor and a counter-doctor integral to a support, a step of rotation being provided of the doctor and the counter-doctor between a first position, wherein the doctor contacts the silk-screen and the counter-doctor is raised with respect to the silk screen, and a second position, wherein the doctor is raised with respect to the silk-screen and the counter-doctor contacts the silk screen, whereby the contact of the doctor and the counter-doctor with the silk-screen is carried out according to a curved line arranged substantially tangential with respect to the silk screen.
  • a machine for silk-screen printing having a flat support for a sheet or other article to print, a silk-screen and means for effecting a ink spreading on the silk screen, comprises:
  • the zone located under the silk-screen suitable for receiving the sheet advantageously comprises a suspension grid that extends from the flat support opposite to the loading zone, the grid being movable from a position located under the silk-screen to an unloading position.
  • a second pawl is provided between the position located under the silk-screen and the unloading position, movable between a position of intersection with the sheet trajectory and a rest position, whereby during the back stroke of the grid towards the position located under the silk screen, the second pawl is moved to a position of interference and blocks the sheet, which falls in a an unloading zone.
  • the means for effecting an ink spreading comprise a doctor and a counter-doctor integral to a support, means being provided on the support for rotating the doctor and the counter-doctor with respect to a longitudinal axis between a first position, wherein the doctor contacts the silk-screen and the counter-doctor is raised with respect to the silk screen, and a second position, wherein the doctor is raised with respect to the silk-screen and the counter-doctor contacts the silk screen, whereby the contact of the doctor and the counter-doctor with the silk-screen is carried out according to a curved line.
  • the means for translating move the flat support from the loading position to the printing position on a base frame, in the loading position the base frame comprising fixed means of reference for positioning the sheet on the flat support ready for the following printing step, the means of reference being fastened to the edges of the flat support when it is in the loading position.
  • the sheet is positioned in the loading position along two adjacent edges of the flat support, the silk-screen in the printing position having two adjacent edges located above said two edges of the flat support.
  • a silk-screen printing machine 1 comprises a base frame 2 with respect to which a flat support 3 for a sheet 4 can be moved by not shown means from a loading position 5 to a printing position 6 (figure 2).
  • the flat support 3 In the printing position 6 the flat support 3 is located under a silk-screen 7, having a silk cloth 7', relatively to which a support 8 can slide comprising a doctor 9 and a counter-doctor 10.
  • the base frame 2 at the loading zone 5 has positioning registers 12 and 13 suitable for allowing the correct delivery of the sheet 4 on the flat support 3, so that, when the latter is located (figure 2) in the printing zone 6, the sheet 4 is positioned correctly with respect to the silk-screen 7.
  • the flat support 3 is of vacuum type, i.e. it is perforated and under it a suction chamber is provided wherein vacuum is made by means of a suction pump 15 and a flexible tube 16.
  • the suction plane 3 has a grid 20 projecting outwardly on which a sheet 4' can rest that has been already printed in a previous step.
  • the machine provides furthermore two pawls 21 and 22 suitable for engaging with the flat support 3 of the grid 20 in the way hereinafter described.
  • an unloading zone 14 is provided where a conveyor belt 23 is present, for example of transfer into a drier.
  • the operative steps of the machine are the following:
  • sheet 4 position can be effected very easily by means of the positioning registers 12 and 13, which are fixed to the base frame 2 and then do not disturb the printing zone 6 and the silk-screen 7.
  • Positioning registers 12 and 13 are arranged so that they coincide with the position of stop of the flat support 3 in the loading zone 5.
  • the movement of the support 8 that causes the spreading of the ink on the silk-screen 7 is carried out when support 8 is rotated with respect to a pin 8', so that the doctor 9 touches the silk cloth 7' of silk-screen 7.
  • the support 8 rotates about pin 8' so that counter-doctor 10 contacts smoothly silk cloth 7' of silk-screen 7 and then, as shown in figure 4, effects the movement of gathering the ink present on the silk cloth 7' same.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Printing Methods (AREA)
  • Screen Printers (AREA)
EP00112878A 1999-06-18 2000-06-19 Siebdruckverfahren und Siebdruckmaschine zur Durchführung des Verfahrens Withdrawn EP1068953A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPI990037 IT1309853B1 (it) 1999-06-18 1999-06-18 Metodo di stampa serigrafica e macchina di stampa che attua talemetodo.
ITPI990037 1999-06-18

Publications (1)

Publication Number Publication Date
EP1068953A1 true EP1068953A1 (de) 2001-01-17

Family

ID=11394408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00112878A Withdrawn EP1068953A1 (de) 1999-06-18 2000-06-19 Siebdruckverfahren und Siebdruckmaschine zur Durchführung des Verfahrens

Country Status (2)

Country Link
EP (1) EP1068953A1 (de)
IT (1) IT1309853B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114043800A (zh) * 2021-12-03 2022-02-15 无锡宝南机器制造有限公司 双向可打开的踏脚平台板

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210077A (en) * 1978-01-18 1980-07-01 Svecia Silkcreen Maskiner Ab Printing machine
US4254707A (en) * 1979-05-02 1981-03-10 Itron, Inc. Screen printing apparatus with screen peel-off from work
EP0173064A2 (de) * 1982-01-19 1986-03-05 Ake Svantesson Siebdruckmaschine
EP0453988A1 (de) * 1990-04-26 1991-10-30 Sps- Siebdruckmaschinen Gmbh Siebdruckvorrichtung mit beweglicher Tischplatte

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210077A (en) * 1978-01-18 1980-07-01 Svecia Silkcreen Maskiner Ab Printing machine
US4254707A (en) * 1979-05-02 1981-03-10 Itron, Inc. Screen printing apparatus with screen peel-off from work
EP0173064A2 (de) * 1982-01-19 1986-03-05 Ake Svantesson Siebdruckmaschine
EP0453988A1 (de) * 1990-04-26 1991-10-30 Sps- Siebdruckmaschinen Gmbh Siebdruckvorrichtung mit beweglicher Tischplatte

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114043800A (zh) * 2021-12-03 2022-02-15 无锡宝南机器制造有限公司 双向可打开的踏脚平台板

Also Published As

Publication number Publication date
ITPI990037A1 (it) 2000-12-18
IT1309853B1 (it) 2002-02-05

Similar Documents

Publication Publication Date Title
US4178097A (en) Automatic lithographic plate processor
US20050005802A1 (en) Method and apparatus for mounting flexographic plate segments
EP0509803A1 (de) Hemdträger mit einziehbaren Armen
JP3554615B2 (ja) 電子部品装着装置
EP1068953A1 (de) Siebdruckverfahren und Siebdruckmaschine zur Durchführung des Verfahrens
EP1185419A1 (de) Vorrichtung und verfahren und platten zum abladen von einem werkstück einer druckmaschine
JP2002001906A (ja) 衣類装荷装置及び衣類をスクリーン印刷パレットの上に装荷する方法
GB2080153A (en) Conveyor system for conveying panels and shadow masks
CN211968830U (zh) 一种自动移印主机装置
EP0190846B1 (de) Mehrfarbendruck
US4593462A (en) Apparatus for automatically mounting chip-type circuit elements on substrate
JP3561434B2 (ja) スクリーン印刷機及びスクリーン印刷方法
CN116944937A (zh) 一种用于数控设备上下料机的自动翻料中转平台
JPH0754288A (ja) ビードラッピング機
JP2003341010A (ja) スクリーン印刷機及びスクリーン印刷方法
JPH0713323A (ja) フィルム取出し方法及びその装置
JPH0126464Y2 (de)
JPS6017321Y2 (ja) スクリ−ン印刷機における付着ペ−スト除去装置
JP7195299B2 (ja) スクリーン印刷機
JP3728419B2 (ja) 露光すべき露光面の操作装置
JPH0555798A (ja) 基板搬送装置及び この基板搬送装置における基板位置補正方法
JP3232658B2 (ja) 殖版機
JPH06210828A (ja) クリーム半田のスクリーン印刷装置
JPH09281714A (ja) 殖版機
GB2224136A (en) Auxiliary sheet for use with film holder of step-and-repeat machine

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010717

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20040102

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20060103