EP0429317B1 - Druckmaschine mit gesteuerter Hebevorrichtung für die Druckeinheit - Google Patents

Druckmaschine mit gesteuerter Hebevorrichtung für die Druckeinheit Download PDF

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Publication number
EP0429317B1
EP0429317B1 EP90402871A EP90402871A EP0429317B1 EP 0429317 B1 EP0429317 B1 EP 0429317B1 EP 90402871 A EP90402871 A EP 90402871A EP 90402871 A EP90402871 A EP 90402871A EP 0429317 B1 EP0429317 B1 EP 0429317B1
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EP
European Patent Office
Prior art keywords
arms
guide
printing machine
longitudinal member
machine according
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
EP90402871A
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English (en)
French (fr)
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EP0429317A1 (de
Inventor
Jean-Louis Dubuit
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0429317A1 publication Critical patent/EP0429317A1/de
Application granted granted Critical
Publication of EP0429317B1 publication Critical patent/EP0429317B1/de
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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
    • B41F15/08—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

Definitions

  • the present invention relates generally to printing machines of the kind in which a printing means is carried by a carriage mounted movable back and forth on a guide.
  • this printing means relates more particularly to the case where, after the printing of an object, this printing means must be ordered in elevation.
  • the problem in this case is then to cyclically ensure an elevation movement of the guide of the carriage carrying the silk screen constituting in this case the printing means in question.
  • a printing machine of the kind comprising a frame, a guide which, formed by two parallel bars pivotally braced by uprights, is, according to a set deformable parallelograms, articulated with arms pivotally mounted on the frame, and a carriage which, carrying a printing means, is mounted movable back and forth on said guide, with, on the one hand, means of movement control specific to a cyclic back-and-forth movement of the carriage on its guide, and, on the other hand, means of control in elevation specific to a cyclic pivoting of the arms carrying said guide leading to a temporary elevation of the printing medium, said elevation control means comprising a cam, which is rotatably mounted along an axis perpendicular to the plane of the bars forming the guide, and with the edge of which cooperates a follower roller carried by a sill to which the set of deformable parallelograms is controlled to which the guide belongs.
  • this sill constitutes a lever which, at one of its ends, is pivotally mounted on the frame, and which, at the other of these, is coupled by a rod, to a finger extending for this purpose one of the arms of the set of deformable parallelograms.
  • the object of the present invention is to simplify it.
  • the present invention relates to a printing machine of the type concerned generally characterized in that the sill carrying the follower roller ensuring the desired elevation control is pivotally carried by two arms of the same level of the set of deformable parallelograms and is engaged with means for maintaining angular orientation capable of maintaining the axis of this follower roller parallel to the axis of the cam on the edge of which it carries.
  • these means for maintaining angular orientation comprise an upright, which extends pivotally between two arms of different levels of the set of deformable parallelograms, and on which the stringer is wedged.
  • they include a yoke, which is engaged on this sill with two parallel flats provided for this purpose thereon, and which is itself engaged with an amount extending pivotally between two arms of different levels from the set of deformable parallelograms.
  • the follower roller is not subject to any tilting movement relative to the edge of the cam on which it carries, and it remains on the contrary permanently in contact with this wafer by a generator.
  • this is a silk screen printing machine.
  • This machine comprises a frame 10, which, in the embodiment shown, is formed by a horizontal table 11 and two vertical chairs 12 attached to it parallel to each other, at a distance from each other. the other, a guide 13, which, formed of two parallel bars 15 pivotally braced by uprights 16 at each of their ends, is, according to a set of deformable parallelograms 17 detailed below, articulated with arms 18 them -same pivotally mounted, in 19, on the frame 10, and, more precisely, on the chairs 12 belonging to it, and a carriage 20 which, carrying a printing means 21, in this case a screen of silk, is mounted to move back and forth on the guide 13.
  • the arms 18 are arranged outside the chairs 12, and there are thus, parallel to each other, according to two different levels, two arms 18 at each of the ends of the guide 13 .
  • This guide 13 is therefore found to belong to a set of two deformable parallelograms 17 which, each acting respectively at its ends, are each formed of the upright 16 present at the relevant end of this guide 13, of the two arms 18 to which this upright is articulated 16, and of the chair 12 to which these arms 18 are themselves articulated.
  • the two uprights 16 are connected to each other, parallel to the bars 15, by a sill 22, in this case a flat iron.
  • the carriage 20 itself comprises two uprights 24 slidingly engaged on the bars 15.
  • the plane P formed by the bars 15 is a vertical plane, and, square therewith, the printing means 21 itself extends in a horizontal plane.
  • displacement control means are provided which are suitable for reciprocating cyclic movement of the carriage 20 on its guide 13.
  • these displacement control means comprise a cam 29, which is rotatably mounted along an axis A1 perpendicular to the plane P of the bars 15, being locked in rotation to do this on the output shaft 30 of a geared motor 31 carried by the table 11 of the frame 10, and which, in the eccentric position relative to this axis A1, carries a roller 32 by which it meshes with a vertical groove of the carriage 20 formed by two rules 34 reported vertically on the back of the flange 25 thereof, FIG. 4.
  • the cam 29 thus directly controls, in displacement, the carriage 20.
  • elevation control means are also provided for a cyclic pivoting of the arms 18 carrying the guide 13 leading to a temporary elevation, parallel to itself, of the printing means 21.
  • elevation control means also use the cam 29.
  • this sill 37 is pivotally carried by two arms 18, of the same level, of this set of deformable parallelograms 17, and it is engaged with means for maintaining angular orientation suitable for maintaining the axis.
  • A2 of the follower roller 36 parallel to the axis A1 of the cam 29.
  • these means for maintaining angular orientation comprise an upright 38, which extends pivotally between two arms 18, of different levels, of the set of parallelograms deformable 17, parallel to the uprights 16 thereof, between these uprights 16 and the pivots 19 of these arms 18 on the chairs 12 of the frame 10, and on which the sill 37 is wedged.
  • the sill 37 extends directly between two arms 18, of the same level, of the set of deformable parallelograms 17, in this case their upper arms 18, and, axially wedged on the one of these arms 18 at one of its ends, using a nut 40, it is freely engaged with the other at the other of its ends, crossing the latter axially freely in rotation, by a smaller diameter extension 41.
  • the upright 38 which extends outside the arms 18, is, at its upper end, locked in rotation on this extension of smaller diameter 41 of the sill 37.
  • the upright 38 is articulated, by a pivot 43, to the other arm 18 concerned of this set of deformable parallelograms 17.
  • the follower roller 36 extends in the very thickness of the sill 37, thanks to a diametrical groove 45 thereof.
  • the printing machine thus formed is completed, in particular, by a rack 47, which, parallel to the bars 15 forming the guide 13 of the carriage 20, is linked in movement to the latter.
  • This rack 47 which is intended to ensure the rotational drive of a pinion 48 on which must be locked in rotation, along an axis A3 perpendicular to the plane P of the bars 15, the support means specific to the support of the object , in practice a cylindrical object, to be printed, is, for example, articulated, at one of its ends, to the carriage 20, around an axis parallel to the preceding axis A3, so as to be able to freely carry, by simple gravity, on the pinion 48, while being guided in a groove of the carriage 20 at its other end.
  • the printing machine according to the invention is completed, finally, in a manner known per se, by a support 50, which, carried by the sill 22, as shown diagrammatically in broken lines in FIG. 1, carries itself, such as shown in fine lines in Figure 3, a squeegee 51 with which it is associated with independent elevation control means not visible in the figures.
  • the cam 29 ensures, at each revolution, a movement, first in one direction, then in the opposite direction, of the carriage 20 on its guide 13.
  • the movement in the first direction corresponds to the printing of the object to be printed, and the movement in the opposite direction corresponds to the return movement necessary for the carriage 20 to return to its initial position.
  • the profile of the edge 35 of the cam 29 has, locally, in excess thickness, a clean boss, during this return movement of the carriage 20, to control a displacement in elevation, along arrow F of the Figure 3, the sill 37, and therefore, due to the set of deformable parallelograms 17 to which belongs its guide 13, the carriage 20 and the printing means 21 which it carries.
  • the axis A2 of the follower roller 36 remains parallel to the axis A1 of the cam 29 against the edge 35 of which it carries.
  • the means for maintaining the angular orientation with which the sill 37 carrying the follower roller 36 is engaged comprises a yoke 52 which is engaged on said sill 37, and, more precisely, on the extension of smaller diameter 41 thereof, by means of two parallel flats 53 provided for this purpose thereon, and which is itself engaged with an upright extending pivotally between two arms 18 of different levels of the set of deformable parallelograms 17.
  • this amount is an amount 16.
  • the yoke 52 is preferably engaged with such an amount via a core 54, vis-à-vis which it is movable back and forth in a direction perpendicular to the plane P of the bars 15 forming the guide 13, and which is itself movable back and forth on said upright in a direction parallel to this plane, generally following an arrangement of the type of those of tables with crossed movements in XY.
  • the axis A2 of the follower roller 36 remains permanently parallel to the axis A1 of the cam 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Rotary Presses (AREA)

Claims (9)

  1. Druckmaschine, die einen Rahmen (10), eine Führung (13), die, von zwei parallelen, durch Halterungen (16) in schwenkbarer Weise verstrebten Stangen (15) gebildet, entlang einer Anordnung verformbarer bzw. verschiebbarer Parallelogramme (17) an Armen (18) angelenkt ist, die an dem Rahmen (10) schwenkbar angebracht sind, und einen Hauptschlitten (20), der als Träger einer Druckeinheit (21) an der Führung (13) hin- und herbeweglich angebracht ist, umfaßt, einerseits, mit einer gesteuerten Verschiebevorrichtung (29, 32, 34) für ein zyklisches Hin- und Herverschieben des Hauptschlittens (20) auf seiner Führung (13) und andererseits mit einer gesteuerten Hebevorrichtung für ein zyklisches Schwenken der Tragarme (18) der Führung (13) zum zeitweiligen Anheben der Druckeinheit (21), wobei die gesteuerte Hebevorrichtung einen Nocken (29) umfaßt, der um eine Achse (A1) rechtwinklig zur Ebene der die Führung (13) bildenden Stangen (15) drehbar angebracht ist und mit dessen Rand eine Folgerrolle (36) zusammenwirkt, die durch einen Längsträger (37) getragen wird, von dem die Anordnung der verschiebbaren Parallelogramme (17) abhängig ist, zu der die Führung (13) gehört, dadurch gekennzeichnet, daß der die Folgerrolle (36) tragende Längsträger (37) durch zwei Arme (18) desselben Niveaus der Anordnung verschiebbarer Parallelogramme (17) in schwenkbarer Weise getragen wird und mit Mitteln zur Aufrechterhaltung der Winkelausrichtung, die die Achse (A2) der Folgerrolle (36) parallel zu der Achse (Al) des Nockens (29) halten, in Eingriff steht.
  2. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel zur Aufrechterhaltung der Winkelausrichtung, mit denen der die Folgerrolle (36) tragende Längsträger (37) in Eingriff steht, eine Halterung (38) umfassen, die sich zwischen zwei Armen (18) unterschiedlichen Niveaus der Anordnung von verschiebbaren Parallelogrammen (17) in schwenkbarer Weise erstreckt und auf der der Längsträger (37) festgekeilt bzw. fest angebracht ist.
  3. Druckmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel zur Aufrechterhaltung der Winkelausrichtung, mit denen der die Folgerrolle (36) tragende Längsträger (37) in Eingriff steht, einen Gabelkopf (52) umfassen, der mit dem Längsträger (37) über zwei parallele Flachteile (53), die zu diesem Zweck darauf vorgesehen sind, in Eingriff steht und der selber mit einer Halterung (16) in Eingriff steht, die sich zwischen zwei Armen (18) unterschiedlichen Niveaus der Anordnung verschiebbarer Parallelogramme (17) in schwenkbarer Weise erstreckt.
  4. Druckmaschine nach Anspruch 3, dadurch gekennzeichnet, daß der Gabelkopf (52) mit der Halterung (16) über einen Knotenkörper (54) in Eingriff steht, gegenüber welchem er in einer Richtung rechtwinklig zur Ebene der die Führung (13) bildenden Stangen (15) hin und her beweglich ist und der seinerseits auf der Halterung (16) in einer Richtung parallel zu dieser Ebene beweglich ist.
  5. Druckmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sich der die Folgerrolle (36) tragende Längsträger (37) direkt zwischen zwei Armen (18) desselben Niveaus der Anordnung verschiebbarer Parallelogramme (17) erstreckt.
  6. Druckmaschine nach Anspruch 5, dadurch gekennzeichnet, daß der Längsträger (37) auf einem der Arme (18), zwischen denen er sich erstreckt, axial verkeilt bzw. fest angebracht ist und mit dem anderen in freiem Eingriff steht.
  7. Druckmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß sich die Folgerrolle (36) in der Dicke bzw. Ausdehnung des Längsträgers (37) selber, der sie trägt, in einem Einschnitt (45) in diesem erstreckt.
  8. Druckmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ihr Rahmen (10) zwei parallele Lagerplatten bzw. Tragteile (12) zur Lagerung der den Schlitten (20) tragenden Anordnung verschiebbarer Parallelogramme (17) umfaßt, wobei die Arme der Anordnung verschiebbarer Parallelogramme (17) auf der Außenseite der Tragteile (12) angeordnet sind.
  9. Druckmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß bei der gesteuerten Verschiebevorrichtung für den Schlitten (20), die den Nocken (29) in Betrieb setzt, der Nocken (29) den Schlitten (20) direkt steuert.
EP90402871A 1989-10-16 1990-10-15 Druckmaschine mit gesteuerter Hebevorrichtung für die Druckeinheit Expired - Lifetime EP0429317B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8913481A FR2653061B1 (fr) 1989-10-16 1989-10-16 Machine a imprimer a guide porteur d'un moyen d'impression a commander cycliquement en elevation.
FR8913481 1989-10-16

Publications (2)

Publication Number Publication Date
EP0429317A1 EP0429317A1 (de) 1991-05-29
EP0429317B1 true EP0429317B1 (de) 1994-01-26

Family

ID=9386424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402871A Expired - Lifetime EP0429317B1 (de) 1989-10-16 1990-10-15 Druckmaschine mit gesteuerter Hebevorrichtung für die Druckeinheit

Country Status (7)

Country Link
US (1) US5134933A (de)
EP (1) EP0429317B1 (de)
BR (1) BR9005312A (de)
ES (1) ES2022060T3 (de)
FR (1) FR2653061B1 (de)
MX (1) MX173629B (de)
PL (1) PL165446B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100553990C (zh) * 2007-10-12 2009-10-28 陈亿善 一种超长板材喷绘方法及其专用喷绘机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126824A (en) * 1964-03-31 Movement transmission system for silk-screen
FR1263239A (fr) * 1960-02-23 1961-06-09 Machine permettant l'impression à plat et sur corps cylindriques par le procédé à l'écran de soie
US3090300A (en) * 1960-02-23 1963-05-21 Dubuit Louis Gilbert Silk screen printing machine
US3113510A (en) * 1961-12-18 1963-12-10 Dubuit Louis Gilbert Silk-screen printing device
US3838639A (en) * 1970-12-08 1974-10-01 D Yoder Screen printing apparatus
US4184427A (en) * 1977-08-26 1980-01-22 American Screen Printing Equipment Co. Multi-purpose screen printing machine for flat or curved surfaces
US4111118A (en) * 1976-09-07 1978-09-05 American Screen Printing Equipment Co. Multi-purpose screen printing machine

Also Published As

Publication number Publication date
PL287336A1 (en) 1991-04-22
MX173629B (es) 1994-03-18
PL165446B1 (en) 1994-12-30
FR2653061B1 (fr) 1992-01-17
EP0429317A1 (de) 1991-05-29
US5134933A (en) 1992-08-04
ES2022060T3 (es) 1994-03-16
FR2653061A1 (fr) 1991-04-19
ES2022060A4 (es) 1991-12-01
BR9005312A (pt) 1991-09-17

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