EP0081614B1 - Automatic silk screen printing machine comprising a squeegee-lowering device actuated by an electro-magnet - Google Patents

Automatic silk screen printing machine comprising a squeegee-lowering device actuated by an electro-magnet Download PDF

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Publication number
EP0081614B1
EP0081614B1 EP19810401997 EP81401997A EP0081614B1 EP 0081614 B1 EP0081614 B1 EP 0081614B1 EP 19810401997 EP19810401997 EP 19810401997 EP 81401997 A EP81401997 A EP 81401997A EP 0081614 B1 EP0081614 B1 EP 0081614B1
Authority
EP
European Patent Office
Prior art keywords
arm
doctor blade
squeegee
electromagnet
abutment surface
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
Application number
EP19810401997
Other languages
German (de)
French (fr)
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EP0081614A1 (en
Inventor
Jacques Monvoisin
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.)
TECAL Sarl
Original Assignee
TECAL Sarl
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 TECAL Sarl filed Critical TECAL Sarl
Priority to EP19810401997 priority Critical patent/EP0081614B1/en
Priority to DE8181401997T priority patent/DE3174529D1/en
Publication of EP0081614A1 publication Critical patent/EP0081614A1/en
Application granted granted Critical
Publication of EP0081614B1 publication Critical patent/EP0081614B1/en
Expired 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
    • B41F15/0886—Machines for printing on conical or frusto-conical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0804—Machines for printing sheets
    • B41F15/0813—Machines for printing sheets 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
    • B41F15/0872—Machines for printing on articles having essentially cylindrical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/40—Inking units
    • B41F15/42—Inking units comprising squeegees or doctors

Definitions

  • Automatic screen printing machines include generally complex means for synchronized control of the relative movements of the screen, the squeegee and the object to be printed. These movements comprise, in a known type of machine, a relative translation of the screen relative to the squeegee (the screen being fixed for printing flat surfaces, while it is the squeegee which is fixed for the impression of cylindrical surfaces), a lowering of the squeegee and a simultaneous lifting of the object-holding part.
  • FR-A-1 265 995 describes (page 3, from the last paragraph of the left column; see in particular Figure 9), an automatic screen printing machine, comprising synchronized movement control means comprising a relative translation of the screen with respect to a squeegee, a lowering of the squeegee and a simultaneous lifting of the object-holding part, in which the mechanism for lowering and lifting the squeegee-piece comprises a controlling electromagnet lowering the squeegee and an arm articulated at a fixed point relative to the translation means of the squeegee.
  • the machine according to the invention is characterized by a return spring of the abovementioned arm in a position corresponding to the raised position of the squeegee, by a member having an abutment surface above said arm, a link having an axis integral with said arm and carrying at its end the axis of a wheel placed in abutment against said abutment surface, a rod linked at one end to this rod so as to cause it to oscillate about its axis, an electromagnet having a part mobile integral with the other end of said rod and means for causing the brief excitation of the electromagnet to control the lowering of the squeegee.
  • the chassis 1a, 1b, 2 of the machine supports, in the vicinity of its rear face, two horizontal tubes 3-4 on which respectively slide a table 5 for supporting the squeegee device and a table 6 for supporting the screen device,
  • a table 5 for supporting the squeegee device
  • a table 6 for supporting the screen device
  • One or the other of the tables is driven, from a motor not shown, by one rod-crank systems 7-8 and 9-10 respectively.
  • Table 5 has on its underside brackets 50-51 for supporting the axes of respective central knurls 52-53.
  • the thumb wheel 52 rolls on the upper face of a horizontal guide bar 11 linked to the uprights 1a-1b of the chassis, while the knurled wheel 53 rolls in a groove made in a horizontal guide bar 12 also linked to the uprights 1 a-1 b.
  • These two knobs ensure rigid guidance of the sliding of the table 5, thus preventing any deflection of the tube 3.
  • the table 6 carries on its upper face two brackets 60 for supporting the axes of two knobs 61-62 which roll on the lower face of the bar 11 and, on its lower face, a bracket 63 for supporting the axis a wheel 64 which rolls on the upper face of a horizontal guide bar 13 linked to the uprights 1a-1b of the chassis.
  • Figures 4 and 5 show that the arm 15 is embedded between two pieces 150-151 fixed above the table 5 and to which are themselves fixed two columns 152 which support a stop plate 17, as well as an electro- magnet 21.
  • a link 19 has its axis 190 secured to the arm 15 and is driven in oscillation around this axis by a rod 20 linked to the movable part 210 of the electromagnet 21.
  • the link 19 carries at its end the axis of a thumbwheel 191 in abutment on the underside of the plate 17.
  • the drive mechanism of the screen-holder part 24 is integral with a plastic part 240 which rests on the table 6 and is driven, when the table 6 moves in translation for the printing of a cylindrical or conical object, by a stud 600 integral with the table 6 and which engages in a light 241 formed in the part 240.
  • the part 240 remains fixed, relative to the table 6 undergoing a translation and these two members will then be secured by means of pins penetrating into orifices, the means described below, which materialize an axis of rotation of the part 240 having previously been removed.
  • the part 240 must undergo a rotation about a fixed axis, the position of which must be all the closer to the part 24 as the taper of the object is more big.
  • a metal part of generally triangular shape 242 is superimposed on the part 240.
  • This part 242 is fixed, by means of a member 243 (FIG. 3) to the bar 11 and by means of a member 244 to the bar 12.
  • the table 6 therefore undergoes a translation relative to it during the printing of the conical objects.
  • the parts 240 and 242 are linked together by means of a part 245 which allows their relative rotation (axis of rotation of the part 240).
  • the point 245 remaining fixed and the axis of a stud or of a bearing 600, integral with the table 6, which moves in a light formed in the part 240, undergoing a translation, the part 240 itself undergoes a rotation around axis 245.
  • the member To adjust the position of the center of rotation, the member will be engaged in one of the orifices (not shown) formed in part 242.
  • the rest position of the pin 600 is itself adjustable, to ensure the correct rotation drive of the part 242 as a function of the position of the axis of rotation 245.
  • crank 25 linked at a point 260 to a horizontal bar 26 which slides on two guide tubes or slides 27-28 fixed, at one end, to the varre 13 and, to the 'other end, at the base 2 of the chassis.
  • the control of the crank 25 from the already mentioned motor and the synchronization of the movements of the screen (or of the squeegee) with those of the object-holder assembly, are carried out in a manner well known per se in this type of machines.
  • the object-holder assembly comprises, in addition to the bar 26, a bar 29 which also slides on the slides 27-28 and is secured to the bar 26 by columns 30-31, on which the object-holder itself is mounted 32
  • a screw 33 controlled by a thumbwheel 330 allows the object holder 32 to be adjusted in height.

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

Description

Les machines automatiques d'impression en sérigraphie comportent des moyens généralement complexes de commande synchronisée des mouvements relatifs de l'écran, de la raclette et de l'objet à imprimer. Ces mouvements comportent, dans un type connu de machines, une translation relative de l'écran par rapport à la raclette (l'écran étant fixe pour l'impression de surfaces planes, tandis que c'est la raclette qui est fixe pour l'impression de surfaces cylindriques), un abaissement de la raclette et un relevage simultanés de la pièce porte-objet.Automatic screen printing machines include generally complex means for synchronized control of the relative movements of the screen, the squeegee and the object to be printed. These movements comprise, in a known type of machine, a relative translation of the screen relative to the squeegee (the screen being fixed for printing flat surfaces, while it is the squeegee which is fixed for the impression of cylindrical surfaces), a lowering of the squeegee and a simultaneous lifting of the object-holding part.

FR-A-1 265 995 décrit (page 3, à partir du dernier alinéa de la colonne de gauche; voir en particulier la figure 9), une machine automatique d'impression en sérigraphie, comportant des moyens de commande synchronisée de mouvements comprenant une translation relative de l'écran par rapport à une raclette, un abaissement de la raclette et un relevage simultanés de la pièce porte-objet, dans laquelle le mécanisme d'abaissement et de relevage de la pièce porte-raclette comprend un électro-aimant commandant l'abaissement de la raclette et un bras articulé en un point fixe par rapport aux moyens de translation de la raclette.FR-A-1 265 995 describes (page 3, from the last paragraph of the left column; see in particular Figure 9), an automatic screen printing machine, comprising synchronized movement control means comprising a relative translation of the screen with respect to a squeegee, a lowering of the squeegee and a simultaneous lifting of the object-holding part, in which the mechanism for lowering and lifting the squeegee-piece comprises a controlling electromagnet lowering the squeegee and an arm articulated at a fixed point relative to the translation means of the squeegee.

Elle a déjà fait l'objet de la demande de brevet FR-A-2 485 440 de la Société déposante, publiée le 31 Décembre 1981.It has already been the subject of patent application FR-A-2 485 440 from the applicant company, published on December 31, 1981.

La machine suivant l'invention est caractérisée par un ressort de rappel du bras susvisé en une position correspondant à la position relevée de la raclette, par un organe présentant une surface de butée au-dessus dudit bras, une biellette ayant un axe solidaire dudit bras et portant à son extrémité l'axe d'une roue placée en appui contre ladite surface de butée, une tige liée à une extrémité à cette biellette de manière à l'entraîner en oscillation autour de son axe, un électro-aimant ayant une pièce mobile solidaire de l'autre extrémité de ladite tige et des moyens de provoquer l'excitation brève de l'électro-aimant pour commander l'abaissement de la raclette.The machine according to the invention is characterized by a return spring of the abovementioned arm in a position corresponding to the raised position of the squeegee, by a member having an abutment surface above said arm, a link having an axis integral with said arm and carrying at its end the axis of a wheel placed in abutment against said abutment surface, a rod linked at one end to this rod so as to cause it to oscillate about its axis, an electromagnet having a part mobile integral with the other end of said rod and means for causing the brief excitation of the electromagnet to control the lowering of the squeegee.

D'autres particularités, ainsi que les avantages de l'invention apparaîtront clairement à la lumière de la description ci-après.Other particularities, as well as the advantages of the invention will become clear in the light of the description below.

Au dessin annexé:

  • la figure 1 est une vue en élévation de la face avant d'une machine conforme à un mode d'exécution préféré de l'invention, dont le capot a été enlevé;
  • la figure 2 est une vue en élévation de la face arrière de ladite machine;
  • la figure 3 est une coupe suivant III-III de la figure 1;
  • la figure 4 représente, en position de repos, le bras oscillant que comporte le dispositif porte-raclette d'une telle machine; et
  • la figure 5 est une vue dudit bras oscillant en position abaissée de la raclette.
In the attached drawing:
  • Figure 1 is an elevational view of the front face of a machine according to a preferred embodiment of the invention, the cover has been removed;
  • Figure 2 is an elevational view of the rear face of said machine;
  • Figure 3 is a section along III-III of Figure 1;
  • FIG. 4 shows, in the rest position, the oscillating arm that the squeegee device of such a machine comprises; and
  • Figure 5 is a view of said swing arm in the lowered position of the squeegee.

En se référant plus particulièrement aux figures 1, 2 et 3, on voit que le châssis la, 1b, 2, de la machine supporte au voisinage de sa face arrière deux tubes horizontaux 3-4 sur lesquels coulissent respectivement une table 5 de support du dispositif porte-raclette et une table 6 de support du dispositif porte-écran, L'une ou l'autre des tables (suivant la nature des surfaces à imprimer) est entraînée, à partir d'un moteur non figuré, par l'un des systèmes bielle-manivelle 7-8 et 9-10 respectivement.Referring more particularly to FIGS. 1, 2 and 3, it can be seen that the chassis 1a, 1b, 2 of the machine supports, in the vicinity of its rear face, two horizontal tubes 3-4 on which respectively slide a table 5 for supporting the squeegee device and a table 6 for supporting the screen device, One or the other of the tables (depending on the nature of the surfaces to be printed) is driven, from a motor not shown, by one rod-crank systems 7-8 and 9-10 respectively.

La table 5 porte sur sa face inférieure des équerres 50-51 de support des axes de molettes centrales respectives 52-53. La molette 52 roule sur la face supérieure d'une barre horizontale de guidage 11 liée aux montants 1a-1b du châssis, tandis que la molette 53 roule dans une rainure ménagée dans une barre horizontale de guidage 12 également liée aux montants 1 a-1 b. Ces deux molettes assurent un guidage rigide du coulissement de la table 5, empêchant ainsi toutflèchisse- ment du tube 3.Table 5 has on its underside brackets 50-51 for supporting the axes of respective central knurls 52-53. The thumb wheel 52 rolls on the upper face of a horizontal guide bar 11 linked to the uprights 1a-1b of the chassis, while the knurled wheel 53 rolls in a groove made in a horizontal guide bar 12 also linked to the uprights 1 a-1 b. These two knobs ensure rigid guidance of the sliding of the table 5, thus preventing any deflection of the tube 3.

De même, la table 6 porte sur sa face supérieure deux équerres 60 de support des axes de deux molettes 61-62 qui roulent sur la face inférieure de la barre 11 et, sur sa face inférieure, une équerre 63 de support de l'axe d'une molette 64 qui roule sur la face supérieure d'une barre horizontale de guidage 13 liée aux montants 1a-1b du châssis.Similarly, the table 6 carries on its upper face two brackets 60 for supporting the axes of two knobs 61-62 which roll on the lower face of the bar 11 and, on its lower face, a bracket 63 for supporting the axis a wheel 64 which rolls on the upper face of a horizontal guide bar 13 linked to the uprights 1a-1b of the chassis.

On va maintenant décrire, en se référant plus particulièrement aux figures 4 et 5, le dispositif porte-raclette 14 et son mécanisme de relevage et d'abaissement de la raclette. Cette dernière, non figurée, est portée par une pièce 14a, fixée à un bras 15 articulé en un point 16 fixe par rapport à la table 5 (voir aussi figures 1 et 3).We will now describe, with particular reference to Figures 4 and 5, the squeegee device 14 and its mechanism for raising and lowering the squeegee. The latter, not shown, is carried by a part 14a, fixed to an arm 15 articulated at a point 16 fixed relative to the table 5 (see also Figures 1 and 3).

Les figures 4 et 5 montrent que le bras 15 est encastré entre deux pièces 150-151 fixées au-dessus de la table 5 et auxquelles sont elles- mêmes fixées deux colonnes 152 qui supportent une plaque de butée 17, ainsi qu'un électro-aimant 21.Figures 4 and 5 show that the arm 15 is embedded between two pieces 150-151 fixed above the table 5 and to which are themselves fixed two columns 152 which support a stop plate 17, as well as an electro- magnet 21.

A l'avant de la table 5 est montée la partie fixe (par rapport à la table 5) dudit mécanisme de relevage et d'abaissement, laquelle comprend au-dessus du bras 15, la plaque horizontale de butée 17, au-dessous du bras 15 et coopérant avec lui, un ressort de rappel 18 (fixé par une vis 180). Une biellette 19 a son axe 190 solidaire du bras 15 et est entraîné en oscillation autour de cet axe par une tige 20 liée à la pièce mobile 210 de l'électro-aimant 21. La biellette 19 porte à son extrémité l'axe d'une molette 191 en butée sur la face inférieure de la plaque 17.At the front of the table 5 is mounted the fixed part (relative to the table 5) of said lifting and lowering mechanism, which comprises above the arm 15, the horizontal stop plate 17, below the arm 15 and cooperating with it, a return spring 18 (fixed by a screw 180). A link 19 has its axis 190 secured to the arm 15 and is driven in oscillation around this axis by a rod 20 linked to the movable part 210 of the electromagnet 21. The link 19 carries at its end the axis of a thumbwheel 191 in abutment on the underside of the plate 17.

Lorsque l'électro-aimant est au repos, le bras 15 est horizontal (figure 4). Lorsque l'électro-aimant est excité, une traction (vers la gauche du dessin) est exercée sur la tige 20, ce qui a pour effet de faire pivoter la biellette qui roule sur la plaque de butée 17, et d'abaisser ainsi son axe 190. Il en résulte que le bras 15 prend brusquement la position basse représentée à la figure 5. Deux ressorts 22-23 (figures 1 et 4) appuient sur la plaque 17 avec une pression réglable au moyen d'écrous tels que 230.When the electromagnet is at rest, the arm 15 is horizontal (Figure 4). When the electromagnet is energized, a pull (to the left of the drawing) is exerted on the rod 20, which has the effect of rotating the rod which rolls on the stop plate 17, and thus lowering its axis 190. It follows that the arm 15 suddenly takes the low position shown in Figure 5. Two springs 22-23 (Figures 1 and 4) press on the plate 17 with an adjustable pressure by means of nuts such as 230.

On obtient ainsi un réglage de la raideur de la butée élastique constituée par la plaque 17, donc de la rapidité du mouvement d'abaissement. Lorsque l'électro-aimant cesse d'être excité, le ressort 18 rappelle le bras 15 en position relevée. L'excitation de l'électro-aimant est commandée par un commutateur, non figuré, lui-même commandé par une came qui fait partie d'un mécanisme classique de synchronisation des mouvements de translation de l'écran ou de la raclette et du mouvement d'abaissement de la raclette.This gives an adjustment of the stiffness of the elastic stop constituted by the plate 17, therefore the speed of the lowering movement. When the electromagnet ceases to be excited, the spring 18 recalls the arm 15 in the raised position. The excitation of the electromagnet is controlled by a switch, not shown, itself controlled by a cam which is part of a conventional mechanism for synchronizing the translational movements of the screen or the squeegee and the movement. lowering the squeegee.

On va maintenant décrire brièvement le mécanisme d'entraînement de la pièce porte-écran 24. Cette dernière également visible à la figure 3, est solidaire d'une pièce en matière plastique 240 qui repose sur la table 6 et est entraînée, lorsque la table 6 se deplace en translation pour l'impression d'un objet cylindrique ou conique, par un téton 600 solidaire de la table 6 et qui s'engage dans une lumière 241 ménagée dans la pièce 240.We will now briefly describe the drive mechanism of the screen-holder part 24. The latter also visible in FIG. 3, is integral with a plastic part 240 which rests on the table 6 and is driven, when the table 6 moves in translation for the printing of a cylindrical or conical object, by a stud 600 integral with the table 6 and which engages in a light 241 formed in the part 240.

Pour l'impression d'objets cylindriques ou plans, il suffit que la pièce 240 reste fixe, par rapport à la table 6 subissant une translation et l'on solidarisera alors ces deux organes au moyen de goupilles pénétrant dans des orifices, les moyens décrits ci-après, qui matérialisent un axe de rotation de la pièce 240 ayant au préalable été enlevés.For the printing of cylindrical or planar objects, it suffices that the part 240 remains fixed, relative to the table 6 undergoing a translation and these two members will then be secured by means of pins penetrating into orifices, the means described below, which materialize an axis of rotation of the part 240 having previously been removed.

Pour l'impression d'objets coniques, il faut par contre que la pièce 240 subisse une rotation autour d'un axe fixe, dont la position doit être d'autant plus rapprochée de la pièce 24 que la conicité de l'objet est plus grande.For the printing of conical objects, on the other hand, the part 240 must undergo a rotation about a fixed axis, the position of which must be all the closer to the part 24 as the taper of the object is more big.

Une pièce métallique de forme générale triangulaire 242 est superposée à la pièce 240. Cette pièce 242 est fixée, au moyen d'un organe 243 (figure 3) à la barre 11 et au moyen d'un organe 244 à la barre 12.A metal part of generally triangular shape 242 is superimposed on the part 240. This part 242 is fixed, by means of a member 243 (FIG. 3) to the bar 11 and by means of a member 244 to the bar 12.

La table 6 subit donc une translation par rapport à elle pendant l'impression des objets coniques.The table 6 therefore undergoes a translation relative to it during the printing of the conical objects.

Les pièces 240 et 242 sont liées entre elles au moyen d'une pièce 245 qui autorise leur rotation relative (axe de rotation de la pièce 240). Le point 245 restant fixe et l'axe d'un téton ou d'un roulement 600, solidaire de la table 6, qui se déplace dans une lumière ménagée dans la pièce 240, subissant une translation, la pièce 240 subit elle-même une rotation autour de l'axe 245.The parts 240 and 242 are linked together by means of a part 245 which allows their relative rotation (axis of rotation of the part 240). The point 245 remaining fixed and the axis of a stud or of a bearing 600, integral with the table 6, which moves in a light formed in the part 240, undergoing a translation, the part 240 itself undergoes a rotation around axis 245.

Pour régler la position du centre de rotation, on engagera l'organe dans l'un des orifices (non représentés) ménagés dans la pièce 242.To adjust the position of the center of rotation, the member will be engaged in one of the orifices (not shown) formed in part 242.

La position de repos du tèton 600 est elle-même réglable, pour assurer l'entraînement correct en rotation de la pièce 242 en fonction de la position de l'axe de rotation 245.The rest position of the pin 600 is itself adjustable, to ensure the correct rotation drive of the part 242 as a function of the position of the axis of rotation 245.

On va maintenant décrire brièvement le mécanisme d'abaissement et de relevage de l'objet. Ces mouvements de translation de l'objet sont commandés par une manivelle 25 liée en un point 260 à une barre horizontale 26 qui coulisse sur deux tubes de guidage ou glissières 27-28 fixés, à une extrémité, à la varre 13 et, à l'autre extrémité, à la base 2 du châssis. La commande de la manivelle 25 à partir du moteur déjà mentionné et la synchronisation des mouvements de l'écran (ou de la raclette) avec ceux de l'ensemble porte-objet, s'effectuent de manière bien connue en soi dans ce type de machines.We will now briefly describe the mechanism for lowering and lifting the object. These translational movements of the object are controlled by a crank 25 linked at a point 260 to a horizontal bar 26 which slides on two guide tubes or slides 27-28 fixed, at one end, to the varre 13 and, to the 'other end, at the base 2 of the chassis. The control of the crank 25 from the already mentioned motor and the synchronization of the movements of the screen (or of the squeegee) with those of the object-holder assembly, are carried out in a manner well known per se in this type of machines.

L'ensemble porte-objet comprend, outre la barre 26, une barre 29 qui coulisse également sur les glissières 27-28 et est solidarisée à la barre 26 par des colonnes 30-31, sur lesquelles est monté le porte-objet proprement dit 32. Une vis 33 commandée par une molette 330 permet le réglage du porte-objet 32 en hauteur.The object-holder assembly comprises, in addition to the bar 26, a bar 29 which also slides on the slides 27-28 and is secured to the bar 26 by columns 30-31, on which the object-holder itself is mounted 32 A screw 33 controlled by a thumbwheel 330 allows the object holder 32 to be adjusted in height.

Il va de soi que diverses modifications pourront être apportées à la machine décrite et représentée, sans s'écarter de la portée de l'invention revendiquée dans le jeu de revendications.It goes without saying that various modifications may be made to the machine described and shown, without departing from the scope of the invention claimed in the set of claims.

Claims (2)

1. An automatic silk-screen printing machine including means for synchronized control of movements comprising a relative linear movement of the screen in comparison with a doctor blade, a downward movement of the doctor blade and a simultaneous upward movement of the member which holds the object, in which the mechanism for moving the doctor blade holder (14) downwards and upwards includes an electromagnet which controls the downward movement of the doctor blade and an arm (15) pivoting at a fixed point (16) in comparison with the means for linearly moving the doctor blade, characterized by a return spring (18) of said arm to a position corresponding to the up position of the doctor blade, by a member (17) having an abutment surface above said arm, by means (23) for applying a downward vertical pressure onto said abutment surface; a link (19) having a pivot pin (190) integral with said arm and holding at its end the axle of a wheel (191) bearing against said abutment surface, a rod (20) connected to one end of said link so as to cause it to oscillate about its pivot pin and said electromagnet (21) which has a movable member integral with the opposite end of said rod and means for causing energization of the electromagnet throughout the printing period.
2. A machine according to claim 1, characterized by means (22, 230) for setting the pressure applied onto said member (17) having an abutment surface.
EP19810401997 1981-12-15 1981-12-15 Automatic silk screen printing machine comprising a squeegee-lowering device actuated by an electro-magnet Expired EP0081614B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19810401997 EP0081614B1 (en) 1981-12-15 1981-12-15 Automatic silk screen printing machine comprising a squeegee-lowering device actuated by an electro-magnet
DE8181401997T DE3174529D1 (en) 1981-12-15 1981-12-15 Automatic silk screen printing machine comprising a squeegee-lowering device actuated by an electro-magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19810401997 EP0081614B1 (en) 1981-12-15 1981-12-15 Automatic silk screen printing machine comprising a squeegee-lowering device actuated by an electro-magnet

Publications (2)

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EP0081614A1 EP0081614A1 (en) 1983-06-22
EP0081614B1 true EP0081614B1 (en) 1986-04-30

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CN109094180A (en) * 2018-10-15 2018-12-28 长沙远大住宅工业阜阳有限公司 Silk-screen printing device and its operating method

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Publication number Priority date Publication date Assignee Title
US2207351A (en) * 1938-09-27 1940-07-09 Owens Illinois Glass Co Stenciling apparatus
FR1265995A (en) * 1960-06-01 1961-07-07 Automatic frame printing machine
US3924529A (en) * 1971-10-13 1975-12-09 Affiliated Manufacturers Inc Torsion bar floating squeegee mount for screen printer
FR2485440A1 (en) * 1980-06-24 1981-12-31 Tecal Sarl Automatic synchroniser for screen printing machine - uses horizontally moving tables for squeegee and screen and synchronises raising and lowering of squeegee to work position

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DE3174529D1 (en) 1986-06-05
EP0081614A1 (en) 1983-06-22

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