EP0309023A3 - Device for guiding and regulating the forward step in operating machines with intermittent forward motion, particularly automatic screen printing machines - Google Patents

Device for guiding and regulating the forward step in operating machines with intermittent forward motion, particularly automatic screen printing machines Download PDF

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Publication number
EP0309023A3
EP0309023A3 EP88201918A EP88201918A EP0309023A3 EP 0309023 A3 EP0309023 A3 EP 0309023A3 EP 88201918 A EP88201918 A EP 88201918A EP 88201918 A EP88201918 A EP 88201918A EP 0309023 A3 EP0309023 A3 EP 0309023A3
Authority
EP
European Patent Office
Prior art keywords
sensor
transducer
sensors
machine
machines
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Withdrawn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
EP88201918A
Other languages
German (de)
French (fr)
Other versions
EP0309023A2 (en
Inventor
Luigi Salvade
Giovanni Bonifacini
Angelo Goletti
Emanuele Christiani
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.)
OFFICINE MECCANICHE SALVADE' Sas
Original Assignee
OFFICINE MECCANICHE SALVADE' Sas
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 OFFICINE MECCANICHE SALVADE' Sas filed Critical OFFICINE MECCANICHE SALVADE' Sas
Publication of EP0309023A2 publication Critical patent/EP0309023A2/en
Publication of EP0309023A3 publication Critical patent/EP0309023A3/en
Withdrawn legal-status Critical Current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
    • B41F15/08—Machines
    • B41F15/10—Machines for multicolour printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/04—Conveying or guiding webs through presses or machines intermittently

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)

Abstract

This invention relates to a device for the control and regulation of the intermittent forward step of a machine equipped with a closed loop conveyor belt, or similar device, where the intermittent forward step must be highly precise, in particular when the belt is very long, even 80 m or more, said device having a primary specific application on machines for automatic screen-printing for which it was first produced.
It consists of the fact that a flexible magnetic transducer (11) is applied along the whole length of one of the edges of the conveyor belt (2), magnetised with alternating polarity at a constant step P, with which two magnetic sensors (12-13) interact, said sensors being positioned above the transducer (11) at an appropriate pre-set distance apart, equal to the real printing step Sr and in correspondance to the vertical axis of the transducer (11), the sensors (12-13) being connected to a step counter and being capable of communicating with one another via a control unit (16), of a basically known design, so that the signal received by the sensor (13) and emitted from the point of the transducer (11), which at a given point of the operating cycle is located beneath the sensor (13), is sent by sensor (13) to sensor (12), which will cause the machine to stop beneath it only when it has read an identical signal, the machine stopping in correspondance to the same exact point of the transducer (11) and therefore of the conveyor belt (2) which was previously located beneath the sensor (13).
The distance Sr between the two sensors (12) and (13) can be varied since one of the sensors, for example sensor (13), is mobilely mounted on a rod (14) fixed to the machine and can run longitudinally along the rod (14) actuateed by a small motor (15) and thus vary its distance from the sensor (12).
EP88201918A 1987-09-25 1988-09-07 Device for guiding and regulating the forward step in operating machines with intermittent forward motion, particularly automatic screen printing machines Withdrawn EP0309023A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT22034/87A IT1222737B (en) 1987-09-25 1987-09-25 GUIDE DEVICE AND ADJUSTMENT OF THE FORWARD STEP IN INTERMITTENT OPERATING MACHINES, IN PARTICULAR IN AUTOMATIC SCREEN PRINTING MACHINES
IT2203487 1987-09-25

Publications (2)

Publication Number Publication Date
EP0309023A2 EP0309023A2 (en) 1989-03-29
EP0309023A3 true EP0309023A3 (en) 1990-04-11

Family

ID=11190490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88201918A Withdrawn EP0309023A3 (en) 1987-09-25 1988-09-07 Device for guiding and regulating the forward step in operating machines with intermittent forward motion, particularly automatic screen printing machines

Country Status (2)

Country Link
EP (1) EP0309023A3 (en)
IT (1) IT1222737B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1277101B1 (en) * 1995-12-19 1997-11-04 Viero Srl ROTATING BELT PRINTING MACHINE INCLUDING A POSITIONING DEVICE WITH LINEAR OPTICAL SENSOR
IT1277288B1 (en) * 1995-12-19 1997-11-05 Viero Srl SYNCHRONIZATION METHOD FOR A ROTATING BELT MACHINE FOR CYLINDER PRINTING AND MACHINE ACCORDING TO THIS METHOD
IT1304550B1 (en) * 1998-02-17 2001-03-19 Francesco Schinco SCREEN PRINTING MACHINE FOR TILES WITH IMAGE POSITION CONTROL SYSTEM.
CN110802936A (en) * 2019-12-11 2020-02-18 浙江宝石蝶围巾有限公司 Silk scarf bedplate printing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB959972A (en) * 1961-09-27 1964-06-03 Heberlein & Co Ag Screen-printing apparatus
GB1082881A (en) * 1965-03-08 1967-09-13 Keuffel & Esser Co Magnetic tape position measuring device
EP0130751A2 (en) * 1983-06-24 1985-01-09 Toshin Kogyo Co. Ltd. Continuous multicolor printing method and apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59132010A (en) * 1983-01-17 1984-07-30 Hitachi Ltd Positioning method of continuous sheet-shaped work

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB959972A (en) * 1961-09-27 1964-06-03 Heberlein & Co Ag Screen-printing apparatus
GB1082881A (en) * 1965-03-08 1967-09-13 Keuffel & Esser Co Magnetic tape position measuring device
EP0130751A2 (en) * 1983-06-24 1985-01-09 Toshin Kogyo Co. Ltd. Continuous multicolor printing method and apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 259 (P-317)(1696) 28 November 1984, & JP-A-59 132010 (HITACHI SEISAKUSHO K.K.) 30 July 1984, *

Also Published As

Publication number Publication date
IT1222737B (en) 1990-09-12
EP0309023A2 (en) 1989-03-29
IT8722034A0 (en) 1987-09-25

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