EP2036727A2 - Druckvorrichtung, Einstellungsverfahren und Druckverfahren - Google Patents

Druckvorrichtung, Einstellungsverfahren und Druckverfahren Download PDF

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Publication number
EP2036727A2
EP2036727A2 EP08164288A EP08164288A EP2036727A2 EP 2036727 A2 EP2036727 A2 EP 2036727A2 EP 08164288 A EP08164288 A EP 08164288A EP 08164288 A EP08164288 A EP 08164288A EP 2036727 A2 EP2036727 A2 EP 2036727A2
Authority
EP
European Patent Office
Prior art keywords
carriage
screen
rotation
pattern
motor
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.)
Granted
Application number
EP08164288A
Other languages
English (en)
French (fr)
Other versions
EP2036727A3 (de
EP2036727B1 (de
Inventor
François Dumenil
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.)
Machines Dubuit SAS
Original Assignee
Machines Dubuit 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 Machines Dubuit SAS filed Critical Machines Dubuit SAS
Publication of EP2036727A2 publication Critical patent/EP2036727A2/de
Publication of EP2036727A3 publication Critical patent/EP2036727A3/de
Application granted granted Critical
Publication of EP2036727B1 publication Critical patent/EP2036727B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41F15/18—Supports for workpieces
    • B41F15/32—Supports for workpieces for articles with conical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0886—Machines for printing on conical or frusto-conical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/10—Screen printing machines characterised by their constructional features
    • B41P2215/11—Registering devices
    • B41P2215/112—Registering devices with means for displacing the frame

Definitions

  • the present invention relates to a screen printing device conical object.
  • a printing device comprising a frame, means for rotating the object relative to the frame, a screen carrying a pattern to be printed and a screen support carried by the frame.
  • Two toothed crowns are arranged on two opposite sides of the screen. These crowns are engaged in two racks extending opposite one another on the screen support.
  • This rack-and-pinion drive is able to rotate the screen around its center and move it in a first direction relative to the frame.
  • Other drive means are arranged on the frame to move the screen support relative to the frame in a second direction perpendicular to the first direction.
  • the screen is moved to describe an arc whose center is the taper center of the object.
  • the object of the present invention is to provide a simpler printing device.
  • the printing device Before printing, the printing device must be set to print exactly on the portion of the object intended for this purpose.
  • this setting is difficult to implement because there are positional differences between the theoretical position of the pattern relative to the screen and games between the screen and the screen moving means.
  • this setting must be changed whenever an object of a different shape or size needs to be printed.
  • Another object of the present invention is to provide an easier adjustment method for the printing device mentioned above.
  • the invention also relates to a printing method comprising the steps of the adjustment method described above.
  • the adjustment method and the printing method may be used by any printing device comprising a frame, a screen movable relative to the frame, a scraper carried by the frame and at least two means of driving the screen in two perpendicular directions.
  • the printing device 2 is represented on the figure 1 . It comprises a frame 4 carrying a device 6 for rotating an object to be printed 8, and a system 10 for moving a printing screen 12.
  • the object to be printed 8 has at least one conical portion 13 having a center of conicity C C and a taper angle ⁇ represented on the figure 2 .
  • the center of conicity C C is located at the virtual summit of the cone portion.
  • the angle of conicity ⁇ is the angle defined between a generatrix 14 of the cone and the axis of revolution CC of the cone.
  • the frame 4 of the printing device has a generally parallelepipedal shape open on one of its faces 16 hereinafter called the front face, and on its opposite face 18 hereinafter referred to as the rear face.
  • the internal lateral faces of the frame 4 are equipped with four vertical rails 20, 22, 24 on which the driving device 6 is able to move to change the distance between the object to be printed 8 that it carries and the screen 12 depending on the diameter of the object to be printed 8.
  • the traces of the guide walls of the rails 22 and 24 are shown in dotted lines on the figure 1 .
  • the frame 4 is furthermore equipped with locking means in the vertical position of the device 6, not shown.
  • the driving device 6 consists of a box 26, a motor / geared motor assembly 27 carried by the box 26 and a system 28 for retaining and locking the motor / gearbox motor 27 .
  • the box 26 forms an open cradle on its front and rear faces. It is equipped with rollers engaged in the vertical rails 20, 22, 24 of the frame 4.
  • the motor / gear motor assembly 27 is adapted to rotate the object to be printed around its axis of revolution CC at a predefined angular speed. Wo. It is equipped with an encoder 23 shown schematically on the figure 1 , able to read the angular position of the object.
  • the motor / gear motor assembly 27 is pivotable relative to the housing 26 around an axis AA perpendicular to the axis of revolution CC of the object 8, to orient the generator 14 of the conical portion 9 parallel to the screen 12 in a position shown on the figure 2 .
  • the retention and locking system 28 makes it possible to modify and fix the orientation of the motor / geared motor assembly and thus the orientation of the object 8 carried by the latter as a function of the angle of taper ⁇ of the object.
  • the retaining and locking system 28 comprises two upper tie rods 30, 32 passing through two orifices of the box 26 and engaged in the motor / geared motor assembly 27, and two lower tie rods 34, 36 which are traversable and movable in a cam arc of circle centered on the axis AA.
  • Each tie rod 30, 32, 34, 36 is equipped with a locking / unlocking handle for fixing the orientation of the driving device 6 and thus keeping the printing face of the object 8 parallel to the screen 12.
  • the object to be printed 8 is held between a base 40 delimiting a complementary shape footprint to the shape of the bottom of the object 8 and a retaining tip 42 of the neck of the object 8 disposed opposite the base 40.
  • the base 40 is fixed to the output shaft of the motor / geared motor assembly 27.
  • the tip 42 is able to be moved towards and away from the front face 16 of the frame 4 in order to grip axially the object 8 between the base 40 and the tip 42.
  • a pneumatic cylinder 44 for moving the tip is attached to the motor / geared motor assembly 27.
  • the base 40 further has a clearance 45 to allow rotation of the screen 12.
  • the system 10 for moving the screen 12 comprises a first elongate section 46 fixed at one of its ends to the upper face of the frame 4, and a second elongated section 48 carried by the first profile.
  • the first section 46 has an inverted U-section. It is provided with two slides 49, 50 extending parallel to the longitudinal axis of the profile 46, that is to say, parallel to the axis XX in a Cartesian coordinate system (X, Y, Z) fixed with respect to the frame 4 illustrated on FIG. figure 1 .
  • a first carriage 52 is guided on the slides 49, 50.
  • the first carriage 52 comprises a support plate 54 whose upper face 55 is provided with two pairs of slides 56, 58 engaged in the slides 49, 50 and a bearing cooperating with a worm 60.
  • the worm 60 is integral with an output shaft of a single motor 63 adapted to move the first carriage 52 on the slides 49, 50.
  • the slides 49, 50, the slides 56, 58, the bearing and the worm 60 form a reversible mechanical connection between the motor 63 and the first carriage 52.
  • the motor 63 is fixed to a lateral face 46A of the first profile 46. It is reversible and indexed to an encoder 64 shown schematically on the figure 1 .
  • the motor 63 comprises means for cutting off its power supply.
  • the encoder 64 is able to read the coordinates (O, X) of the position of the first carriage 52 in the Cartesian frame (X, Y, Z) when the carriage is driven by the motor or when the latter is moved manually by a motor. operator.
  • the second section 48 is attached to the lower face 65 of the support plate 54 of the first carriage. It extends parallel to the Y-Y axis in the Cartesian coordinate system (X, Y, Z).
  • the second profile 48 is identical to the first profile 46.
  • the second profile 48 is also provided with two slides 66, 67 extending along its longitudinal axis on which a second carriage 68 is guided by a worm 70.
  • the worm 70 is rotated by a single motor 72 fixed to a lateral face 48A of the second profile 48.
  • the motor 72 is reversible, indexed to an encoder 73 shown schematically on the figure 1 .
  • the motor 72 comprises means for cutting off its power supply.
  • the encoder 73 is able to read the position coordinates (Y, O) of the second carriage 68 in the Cartesian coordinate system (X, Y, Z) when the second carriage 68 is driven by the motor 72 or when the latter is manually moved. by an operator.
  • the second carriage 68 is similar to the first carriage 52. It consists of a support plate 74 having an upper face 75 integral with two pairs of slides 76, 78 engaged in the slides 66, 67 and a step 80 cooperating with the worm 70.
  • the slides 66, 67, the slides 76, 78, the bearing 80 and the worm 70 form a reversible mechanical connection between the motor 72 and the second carriage 68.
  • a motor / gear motor assembly 84 is fixed on the upper face of the support portion 82A so that its output shaft 87 extends along an axis BB, parallel to the axis ZZ of the Cartesian coordinate system (X, Y, Z ).
  • the output shaft 87 passes through an opening in the support portion 82A. Its end is fixed to a gripper 85 for gripping the screen 12.
  • the motor / geared motor assembly 84 comprises a single motor 86 set on a gear unit, the assembly being reversible, indexed to an encoder 87 shown schematically on the figure 1 .
  • the motor 86 comprises means for cutting off its power supply.
  • the encoder 87 is able to read the angle of rotation of the screen 12 in the Cartesian frame (X, Y, Z) when the screen is driven by the motor 86 or when the latter is manually moved by an operator.
  • the screen 12, shown on the figure 5 comprises a frame 89 for maintaining a mesh 90 fixed on the lower face of the frame 89.
  • the mesh 90 has a pattern 92 to print in the form of a cone developed.
  • This developed cone is formed of two circular arcs of different radius centered on a point called center of the pattern C M.
  • the two arcs are separated by a distance corresponding to the height of the pattern. They extend over a width defined by an angular range ⁇ extent of the pattern (on the view it is noted a delta).
  • the printing device 2 further comprises a doctor blade 94 shown schematically only on the figure 1 .
  • the doctor blade 94 is driven in displacement vertically relative to the frame 4 to press the mesh 90 against the conical portion 13 of the object to be printed 8 and thus apply the pattern 92 to the latter, the mesh 90 being sandwiched between the conical portion 13 of the object 8 and the squeegee 94.
  • the printing device 2 further comprises a control unit 96 able to control the motor / gear motor units 27, 84 and the motors 63, 72 as a function of the angular position information of the object, the position of the first carriage 52 , position of the second carriage 68 and angular position of the screen 12 transmitted by the encoders 23, 64, 73, 87.
  • the control unit 96 includes a memory and a processor.
  • the processor is adapted to execute the instructions of a computer program stored in the memory.
  • the program is operable to execute instructions for executing a printing device setting method and a printing method described above.
  • the screen 12 To print the pattern 92 on the generator 14 of the conical portion of the object, the screen 12 must be positioned relative to this object so that the center of the pattern C M is located at the intersection point of the object. a plane containing the mesh 90 and the axis of revolution CC of the object, in a position illustrated on the figure 2 .
  • the output shaft 87 of the drive motor 86 of the screen must pivot around this point of intersection hereinafter called center of rotation of the screen O (x0, y0), the center of rotation O (x0, y0) being concurrent in the center of the pattern C M.
  • the method of setting the printing device is intended to define the coordinates X (t), Y (t) successive first carriage 52 and the second carriage 68 and the successive rotation angles A (t) of the screen 12 around the center of rotation O (x0, y0).
  • the adjustment method of the printing device starts with a learning phase comprising a step of adjusting the vertical position of the drive device 6 relative to the frame 4 and a step of adjusting the orientation of the device.
  • motor / motor reduction gearbox 27 with respect to the casing 26.
  • the box 26 is moved on the vertical rails 20, 22, 24 until the conical portion 13 of the object is separated from 0 to a few millimeters from the screen 12.
  • the motor / gear motor assembly 27 is tilted about the axis AA to arrange the generator 14 of the object 8 horizontally and parallel to the mesh of the screen 12, as shown in FIG. figure 2 .
  • the orientation of this assembly 27 is fixed by means of the retaining and cam locking system 28.
  • a step 98 the user superposes a part of the pattern located at one end of the latter with respect to the object 8.
  • the power supplies of the motors 63, 72, 86 are cut off and an operator moves the first carriage 52 along the slides 48, 50, the second carriage 68 along the slides 66, 67, and the screen 12. around the BB axis to place the part of the pattern to print on the object.
  • the control unit 96 When the first 52 and second 68 carriages, as well as the screen 12 are positioned, the user activates during a step 102 the control unit 96 so that it reads and records in the Cartesian frame (X, Y, Z) the position coordinates (x1, O) of the first carriage 52 and the coordinates (O, y1) of the second carriage 68, as well as the angle of orientation A1 of the screen 12.
  • Steps 98 and 102 are repeated for a portion located at the other end of the pattern, the control unit 96 then recording the position coordinates (x2, y2) of the first 52 and second 68 carriages as well as the angle A2 orientation of the screen 12.
  • Steps 98 and 102 are also repeated for a third part of the pattern 92 located between the two ends of the pattern, the control unit 96 then recording the position coordinates (x3, y3) of the first 52 and second 68 carriages as well as the angle A3 of orientation of the screen 12.
  • the output shaft 87 of the motor 86 is located at the center of rotation O (x0, y0).
  • the pattern to be printed 92 is intended to be printed on a cylindrical object.
  • the user can for example identify on the mesh 90 of the screen an initial point PA located at an initial end of the pattern 92, a PC end point located at a final end of the pattern 92 and a intermediate point PB between the initial point PA and the end point PC, the points PA, PB and PC being inscribed along an arc centered on the center of the pattern C M. Then, the screen 12 is moved to place the initial point PA and the center of the pattern C M in a vertical plane containing the axis of revolution CC of the object, the coordinates (x1, y1, A1) are then recorded.
  • the trolleys 52, 68 and the screen 12 are moved in the same way to record the coordinates (x2, y2, A2) obtained when the intermediate point PB and the center of the pattern C M are placed in a vertical plane containing the axis of revolution CC, and the coordinates (x3, y3, A3) obtained when the initial point PA and the center of the pattern C M are positioned in a vertical plane containing the axis of revolution CC.
  • the method of setting the printing device is continued by a calculation phase comprising a step 104 during which the control unit 96 calculates the coordinates (x0, y0) of the center of rotation O of the output shaft 87 of the motor 86 in the Cartesian coordinate system (X, Y, Z) and the radius R of rotation of the output shaft 87 around this center (x0, y0).
  • the coordinates (x0, y0) of the center of rotation O are obtained from the coordinates (x1, y1), (x2, y2) and (x3, y3). Indeed, a single circle passes through these three coordinates.
  • the first carriage 52 and the second carriage 68 are moved on a path whose length depends solely on the position of the center of conicity C C of the conical portion 13 of the object and the angular range ⁇ of the pattern.
  • control unit 96 calculates the angular range of rotation of the screen around the output shaft 87. This is equal to the angular range ⁇ extent of the pattern. Then, the unit calculates the rotation angles A (t) of the screen over time.
  • the angular velocity W E of rotation of the screen 12 is a function of the angular velocity W O of rotation of the object 8 of the cone angle ⁇ of the object 8.
  • the printing method according to the invention comprises the steps of the adjustment method followed by a printing step 110 of the objects for which the printing device has been set.
  • control unit 96 controls the motors 63, 72 and 86 so that the screen is moved according to the successive coordinates X (t), Y (t) calculated during the step 106 and successive rotation angles A (t) calculated during step 108. Meanwhile, the control unit 96 controls the gear motor assembly 27 so that the object pivots at an angular speed W O.
  • the printing device allows a deflection angle of the screen 12 of 360 °
  • the axis of rotation of the rotation shaft 87 is positioned close to the center of the pattern C M.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
EP08164288.6A 2007-09-12 2008-09-12 Druckvorrichtung, Einstellungsverfahren und Druckverfahren Expired - Fee Related EP2036727B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0757520A FR2920694B1 (fr) 2007-09-12 2007-09-12 Dispositif d'impression, procede de reglage et procede d'impression

Publications (3)

Publication Number Publication Date
EP2036727A2 true EP2036727A2 (de) 2009-03-18
EP2036727A3 EP2036727A3 (de) 2012-04-18
EP2036727B1 EP2036727B1 (de) 2013-11-06

Family

ID=39316949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08164288.6A Expired - Fee Related EP2036727B1 (de) 2007-09-12 2008-09-12 Druckvorrichtung, Einstellungsverfahren und Druckverfahren

Country Status (5)

Country Link
US (1) US8474376B2 (de)
EP (1) EP2036727B1 (de)
JP (1) JP5312883B2 (de)
ES (1) ES2443228T3 (de)
FR (1) FR2920694B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2943634A1 (fr) * 2009-03-24 2010-10-01 Cer Machine et procede de marquage ou d'etiquetage
CN104249546A (zh) * 2014-05-19 2014-12-31 张会强 布料片材丝网印刷用全自动印刷设备

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2997038B1 (fr) * 2012-10-19 2015-01-16 Dubuit Mach Dispositif d'impression serigraphique a deux modes d'impression
FR3035612B1 (fr) 2015-04-29 2017-05-26 Illinois Tool Works Machine de marquage a chaud de pieces de revolution et procede de marquage au moyen d'une telle machine
US20190039772A1 (en) * 2016-04-11 2019-02-07 Van Loi Le Label printer applicator system
KR102522737B1 (ko) 2016-12-21 2023-04-19 바스프 에스이 에터화된 멜라민 폼알데하이드 수지의 액체 조성물의 제조 방법
CN112606554B (zh) * 2021-01-15 2021-07-20 黄燕云 一种智能制造用花盆印刷设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6223653B1 (en) 1999-05-07 2001-05-01 Schott Glas Screen printing apparatus

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US2198565A (en) * 1938-03-31 1940-04-23 Libbey Glass Co Tumbler decorating apparatus
US3113510A (en) * 1961-12-18 1963-12-10 Dubuit Louis Gilbert Silk-screen printing device
US3109365A (en) * 1962-01-04 1963-11-05 William M Karlyn Stenciling apparatus
US4463671A (en) * 1981-06-05 1984-08-07 Rudolph Rome R Silk-screen printing method and apparatus
FR2614235B1 (fr) * 1987-04-24 1991-01-25 Sasaki Glass Kk Machine pour imprimer des motifs sur des objets en couleurs multiples.
FR2666050B1 (fr) * 1990-08-23 1992-11-27 Dubuit Mach Machine a imprimer du type a tourelle.
DE4431638A1 (de) * 1994-09-06 1996-03-14 Balsfulland Maschfabrik Gmbh Verfahren zur Passerung von drehbar aufgenommenen Gegenständen für die Durchführung von Druckvorgängen
NL1002118C2 (nl) * 1996-01-18 1997-07-22 Werkvoorzieningschap De Dommel Werkwijze en inrichting voor het aanbrengen van een bedrukking op een conisch oppervlak van een produkt.
DE19614740A1 (de) * 1996-04-15 1997-10-16 Kammann Maschf Werner Verfahren und Vorrichtung zum Bedrucken von selbsttragenden Einzelobjekten
GB2360014A (en) * 2000-03-08 2001-09-12 Dek Printing Machines Ltd Screen printing device with movable screen and print head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6223653B1 (en) 1999-05-07 2001-05-01 Schott Glas Screen printing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2943634A1 (fr) * 2009-03-24 2010-10-01 Cer Machine et procede de marquage ou d'etiquetage
EP2236296A1 (de) * 2009-03-24 2010-10-06 Illinois Tool Works Inc. Vorrichtung und Verfahren zum Markieren oder Etikettieren
CN104249546A (zh) * 2014-05-19 2014-12-31 张会强 布料片材丝网印刷用全自动印刷设备
CN104249546B (zh) * 2014-05-19 2016-04-13 张会强 布料片材丝网印刷用全自动印刷设备

Also Published As

Publication number Publication date
FR2920694B1 (fr) 2010-03-12
US20090071352A1 (en) 2009-03-19
EP2036727A3 (de) 2012-04-18
EP2036727B1 (de) 2013-11-06
JP2009067052A (ja) 2009-04-02
JP5312883B2 (ja) 2013-10-09
ES2443228T3 (es) 2014-02-18
FR2920694A1 (fr) 2009-03-13
US8474376B2 (en) 2013-07-02

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