EP0727310A1 - Improved plant for printing fabrics and the like - Google Patents

Improved plant for printing fabrics and the like Download PDF

Info

Publication number
EP0727310A1
EP0727310A1 EP96200294A EP96200294A EP0727310A1 EP 0727310 A1 EP0727310 A1 EP 0727310A1 EP 96200294 A EP96200294 A EP 96200294A EP 96200294 A EP96200294 A EP 96200294A EP 0727310 A1 EP0727310 A1 EP 0727310A1
Authority
EP
European Patent Office
Prior art keywords
screen
plant according
web
printing
bar
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Withdrawn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
EP96200294A
Other languages
German (de)
English (en)
French (fr)
Inventor
Giorgio Sacchi
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.)
VIERO Srl
Original Assignee
VIERO Srl
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 VIERO Srl filed Critical VIERO Srl
Publication of EP0727310A1 publication Critical patent/EP0727310A1/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Withdrawn legal-status Critical Current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
    • B41F15/0831—Machines for printing webs
    • B41F15/0845—Machines for printing webs with flat screens
    • 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
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/12—Machines with auxiliary equipment, e.g. for drying printed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details

Definitions

  • the present invention relates to a plant for printing web materials, such as lengths or runs of cloth.
  • Positioning of the web under each printing screen in the different stations (or in the same station for several passages) must necessarily reach the highest degree of precision in order to ensure alignment of the images as they are printed and an exact colour matching.
  • a plant for printing web material which comprises a conveyor belt for moving the web material to at least one printing station in turn comprising a printing screen and printing means for printing of the screen on the web material, characterized in that the screen is supported by power-driven means for moving it in the station in directions parallel to the belt surface, a control device detecting a mutual shifting at least in one direction between the printing position on the web and the screen and driving the power-driven movement means of the screen to reduce this shifting.
  • Fig. 1 diagrammatically shown in plan view in Fig. 1 is a plant according to the invention and generally identified by 10, which comprises a conveyor belt 11 driven to bring a fabric web 13 or similar web material under at least one printing station 14.
  • Each station 14 comprises a frame 15 on which support means is provided for a known printing screen 17.
  • the station is comprised of known printing means, such as a doctor blade 18, not shown in detail as it can be easily imagined by a person of ordinary skill in the art.
  • the screen is supported on the fixed frame 15 by supports that are mounted on frame elements movable in directions parallel to the belt plane.
  • the frame is movable at least in one direction transverse to the belt by means of a motor 19.
  • a sensor 20 is disposed integral with the screen supports to be moved therewith, and it detects marks 21 integral with the web to be printed so as to be a reference for the transverse position of the web.
  • the reference marks may consist for example of graphic elements having an edge parallel to the web edge and being greatly contrasted, so that an easy detection of the same by the sensor is enabled, said sensor thereby utilizing such an edge as an indicator of the web side position.
  • the graphic elements may be a sequence of black rectangles on a white background or the like, for example, printed on a narrow pressure-sensitive tape 73 applied to the belt 11 at margin of the web to be printed, the web being fastened to the belt so that it is integral with the reference marks.
  • a reference tape or strip is usually employed for detecting the longitudinal position of the web and operating stopping of the belt to the printing position.
  • the sensor 20 and side-displacement motor 19 are connected to a control device 22, consisting of a known electronic circuitry for example, advantageously provided with a microprocessor.
  • a control device 22 consisting of a known electronic circuitry for example, advantageously provided with a microprocessor.
  • Such a device is substantially known in the art and therefore will not be herein further described or shown as it can be easily assumed by a person skilled in the art, above all in the light of the following description relating to the plant operation.
  • the device 22 receives information about the side position of the web from sensor 20 and drives the motor 19 in operation to translate the screen sideways, so that the correct relative side position between the screen and web to be printed is maintained. In this manner, the presence or not of small side skipping of the belt on running of same is no longer of importance, the screen being shifted sideways so as to compensate for any belt skipping.
  • the front-bar element 23 comprises a section bar 29 supporting several mechanisms protected by a housing 71, 72.
  • the bar carries the fitting pieces 25, 26 and is connected at the ends to carriages 30, 31 sliding along respective slide guides 32, 33 transverse to the belt.
  • Motor 19 is integral with frame 15 and causes rotation of a worm screw parallel to guides 32, 33 and engaging with a nut screw 35 integral with carriage 31.
  • the bar ends are connected with carriages 30, 31 by interposition of slidable inserts 36, 37 received in complementary seatings formed in the bar ends.
  • a motor 38 is fastened to the bar and causes rotation of a worm screw 39 on which a nut screw 40 integral with the insert 37 slides, so that, upon command of motor 38 (powered by the control device 22) the bar can slide axially to itself and therefore in a direction parallel to the belt running direction.
  • the fitting means 25 and 26 are each formed of a respective carriage 45, 46 slidable in a guide 47 along the bar.
  • Carriages 45, 46 in mirror image relationship, carry rests 48, 49 on which the screen 17 edge comes to lie.
  • forks 52, 53 are pivoted at 54, 55 to be moved towards an abutment 56, 57 by means of a lever mechanism operated by a thrust action, acting in a direction parallel to the bar 29, of a screen portion supporting the mushroom-shaped pin against rollers 62, 63.
  • an electric motor 58 operates a pignon gear 59 meshing with an opposite pair of superposed racks 60. 61, parallel to the bar 29.
  • Rack 60 has one end connected to carriage 45, whereas rack 61 has one end connected to carriage 46.
  • motor 58 electrically powered by the control device 22
  • the racks run in opposite directions, so that the carriages move close to or away from each other.
  • screen 17 is laid on rests 48, 49 whereas carriages 45, 46 are disposed between a pair of mushroom-shaped pins projecting from the screen edge. Then motor 58 is operated to move the carriages apart from each other and lead the forks 52, 53 (directed opposite to each other) to be fitted under the mushroom heads of the pins.
  • a further movement of carriages 45, 46 brings the pin supports to push against rollers 62, 63, so that the forks move towards the abutments 56, 57 and lock the pin heads against the abutments themselves.
  • the screen is firmly clamped to the bar 29 and the control device 22 can move the screen in a precise manner, as above said.
  • the feeler element stops against the screen and the worm screw, as a result, moves against the thrust of the spring thereby operating an end-of-stroke microswitch 70 signalling the occurred contact between the feeler element 64 and screen 17 to the control device 22.
  • the control device detects the exact stop position of the screen on the bar.
  • a printing plant being provided which has a precision positioning mechanism for the screen relative to the belt, so as to avoid printing errors due to side skippings of the belt for example, and/or stop errors of the belt.
  • the relatively light weight of the screen and screen supports will enable very quick positionings.
  • sensor 20 may be made as any type of known sensor enabling exact identification of the web position based on the references thereon. While the sensor has been shown as a single device for the sake of simplicity, generally it will consist of two separated sensors for detection of the transverse and longitudinal positions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP96200294A 1995-02-14 1996-02-10 Improved plant for printing fabrics and the like Withdrawn EP0727310A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI950260 1995-02-14
ITMI950260A IT1275147B (it) 1995-02-14 1995-02-14 Impianto perfezionato per la stampa di tessuti e simili

Publications (1)

Publication Number Publication Date
EP0727310A1 true EP0727310A1 (en) 1996-08-21

Family

ID=11370527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96200294A Withdrawn EP0727310A1 (en) 1995-02-14 1996-02-10 Improved plant for printing fabrics and the like

Country Status (4)

Country Link
EP (1) EP0727310A1 (it)
KR (1) KR960031141A (it)
BR (1) BR9600712A (it)
IT (1) IT1275147B (it)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100379558C (zh) * 2004-09-02 2008-04-09 东伸工业株式会社 印染样品的制成方法
WO2011027012A1 (es) * 2009-09-07 2011-03-10 Kerajet, S.A. Dispositivo de impresión mediante tecnología de inyección de tinta
CN102431280A (zh) * 2010-09-29 2012-05-02 如皋市天元服饰印业有限公司 移动式走台自动印花机
EP2759409A1 (en) * 2013-01-25 2014-07-30 Seiko Epson Corporation Recording apparatus and recording method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974766A (en) * 1973-09-10 1976-08-17 Peter Zimmer Process for imprinting spaced-apart web sections with a composite pattern
EP0364424A2 (en) * 1988-10-10 1990-04-18 Svecia Silkscreen Maskiner AB A method of locating a print in a respective printing position in multi-colour silk screen printers
EP0474268A1 (en) * 1990-09-04 1992-03-11 Toshin Kogyo Co. Ltd. Method of registering screens in an automatic printing machine and apparatus for the same
EP0488092A1 (de) * 1990-11-27 1992-06-03 FIRMA GERHARD KLEMM MASCHINENFABRIK GMBH & CO. Siebdruckmaschine
EP0687560A1 (en) * 1994-05-19 1995-12-20 PROXIMA S.r.l. High-precision printing machine, particularly for fabrics or the like, with multiple printing stations

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974766A (en) * 1973-09-10 1976-08-17 Peter Zimmer Process for imprinting spaced-apart web sections with a composite pattern
EP0364424A2 (en) * 1988-10-10 1990-04-18 Svecia Silkscreen Maskiner AB A method of locating a print in a respective printing position in multi-colour silk screen printers
EP0474268A1 (en) * 1990-09-04 1992-03-11 Toshin Kogyo Co. Ltd. Method of registering screens in an automatic printing machine and apparatus for the same
EP0488092A1 (de) * 1990-11-27 1992-06-03 FIRMA GERHARD KLEMM MASCHINENFABRIK GMBH & CO. Siebdruckmaschine
EP0687560A1 (en) * 1994-05-19 1995-12-20 PROXIMA S.r.l. High-precision printing machine, particularly for fabrics or the like, with multiple printing stations

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100379558C (zh) * 2004-09-02 2008-04-09 东伸工业株式会社 印染样品的制成方法
WO2011027012A1 (es) * 2009-09-07 2011-03-10 Kerajet, S.A. Dispositivo de impresión mediante tecnología de inyección de tinta
ES2354667A1 (es) * 2009-09-07 2011-03-17 Kerajet S.A. Dispositivo de impresión mediante tecnología de inyección de tinta.
CN102431280A (zh) * 2010-09-29 2012-05-02 如皋市天元服饰印业有限公司 移动式走台自动印花机
CN102431280B (zh) * 2010-09-29 2014-04-09 如皋市天元服饰印业有限公司 移动式走台自动印花机
EP2759409A1 (en) * 2013-01-25 2014-07-30 Seiko Epson Corporation Recording apparatus and recording method
US9090423B2 (en) 2013-01-25 2015-07-28 Seiko Epson Corporation Recording apparatus and recording method

Also Published As

Publication number Publication date
KR960031141A (ko) 1996-09-17
IT1275147B (it) 1997-07-30
BR9600712A (pt) 1999-01-12
ITMI950260A0 (it) 1995-02-14
ITMI950260A1 (it) 1996-08-14

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