EP2722178B1 - Screen-printing device with one main actuator - Google Patents

Screen-printing device with one main actuator Download PDF

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Publication number
EP2722178B1
EP2722178B1 EP13187545.2A EP13187545A EP2722178B1 EP 2722178 B1 EP2722178 B1 EP 2722178B1 EP 13187545 A EP13187545 A EP 13187545A EP 2722178 B1 EP2722178 B1 EP 2722178B1
Authority
EP
European Patent Office
Prior art keywords
holder module
screen
module
actuator
chassis
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.)
Not-in-force
Application number
EP13187545.2A
Other languages
German (de)
French (fr)
Other versions
EP2722178A1 (en
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
Priority to PL13187545T priority Critical patent/PL2722178T3/en
Publication of EP2722178A1 publication Critical patent/EP2722178A1/en
Application granted granted Critical
Publication of EP2722178B1 publication Critical patent/EP2722178B1/en
Not-in-force 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
    • B41F15/44—Squeegees or doctors
    • 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
    • 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
    • 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
    • B41F15/30—Supports for workpieces for articles with curved surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/36—Screens, Frames; Holders therefor flat
    • 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
    • B41F15/423—Driving means for reciprocating squeegees

Definitions

  • the screen forms a stencil intended to be applied to the object to be printed.
  • the role of the squeegee is to force an ink applied on the screen to pass through the free mesh of the screen.
  • a set of actuators makes it possible to obtain movements of the print head and the object holder module in order to carry out the printing operations while the print head is in the position of use.
  • the print head On a parallelogram or vertical guides actuated by a dedicated actuator, for example a pneumatic cylinder.
  • the actuator is typically fixed to the frame by its first portion, the second portion carrying the print head.
  • An object of the invention is therefore to simplify the printing device, in order to reduce the cost, while retaining comparable functionality.
  • the subject of the invention is a device for producing a screen printing on at least one object, of the type described above, in which the actuator is clean, in a second mode of operation, to be supported on the frame by the second part and moving the object holder module in the direction of pressing relative to the frame by a movement of the first part.
  • a device 1 according to the invention is described for producing a screen printing on an object 3.
  • support on the chassis means, for the first part of the actuator as for the second part, the fact that the part in question, directly or indirectly, based on the frame.
  • a direct support of the party in question is for example the fact of resting on the frame or to be fixed on the frame.
  • An indirect support is for example the fact of resting, or being fixed on a resting element itself, or being itself fixed on the frame.
  • the object 3 is for example a glass bottle, of generally cylindrical shape. Alternatively (not shown), the object 3 is generally conical, ovoid, or even multifaceted.
  • the device 1 extends in a pressing direction Oz, for example substantially vertical.
  • a pressing direction Oz for example substantially vertical.
  • Two directions Ox, Oy horizontal and perpendicular to each other are defined, the reference Ox, Oy, Oz being direct.
  • the object 3 extends mainly, in the example shown, in the direction Oy.
  • the device 1 comprises an object holder module 5 located at the bottom of the device 1 and carrying the object 3, a print head 7 located above the object holder module 5, and an actuator 8 for raising the print head 7 and of the object holder module 5.
  • the object holder module 5 comprises a frame 9, a carriage 11 mounted movable relative to the frame 9 in the pressing direction Oz, an arm 13 pivotally mounted on the carriage 11 about an axis 15 oriented substantially in the printing direction Ox.
  • the object holder module 5 further comprises means 17, 19 for adjusting the angle made by the arm 13 relative to the frame 9 about the axis 15.
  • the tilt adjustment allows the printing, for example, on a object 3 of conical shape.
  • the object holder module 5 is movable in the pressing direction Oz with respect to the print head 7 due to the mobility of the carriage 11 relative to the frame 9.
  • the arm 13 is, in the example shown, substantially horizontal and then extends substantially in the direction Oy.
  • the arm 13 comprises members 20, 21 for holding the object 3.
  • the members 20, 21 are adaptable to the dimensions of the object 3.
  • the members 20, 21 are rotatably mounted about an axis 23 connected to the arm 13.
  • the members 20, 21 are rotated for example by an integral actuator 25 of the arm 13.
  • the axis 23 extends substantially in the direction Oy in the example shown.
  • the carriage 11 comprises a roller 27 controlling the elevation of the arm 13 relative to the frame 9.
  • the roller 27 protrudes from the carriage 11 substantially in the direction Oy.
  • the roller 27 is for example located substantially at the top of the carriage 11.
  • the frame 9 of the object holder module 5 is advantageously mounted on a turntable (not shown) comprising other object-type modules similar to the object holder module 5 for carrying other objects.
  • the turntable is for example of the "carousel” type, that is to say rotatably mounted about a substantially vertical axis, or “revolver” type, that is to say rotatably mounted about an axis substantially horizontal, for example substantially parallel to the direction Oy.
  • the print head 7 comprises a frame 27, a screen module 29 and a doctor blade module 31 mounted movable independently of one another in substantially vertical translation on the frame 27, and a movable carriage 35 extending vertically between the actuator 8 and the object holder module 5.
  • the print head 7 also comprises a fastening system 37 of the display module 29 on the frame 27, in several visible parts, in particular on the Figures 2 to 6 , and 9 to 11 .
  • the print head 7 is movable between a position of use shown on the Figures 1 , 2 , 4 and 15 in which the print head 7 is close to the door module object 5, and a maintenance position shown on the Figures 3 and 17 , in which the print head 7 is spaced from the object holder module 5.
  • the frame 27 ( Figures 5 and 6 ) comprises vertical rails 38, 39 for mounting the screen module 29 and the doctor blade module 31, rails 41, 43 for mounting the mobile carriage 35, a support 45 for a part of the fixing system 37, and a bracket 47 having an upper surface forming a stop B.
  • the frame 27 advantageously defines an opening 49 allowing the passage of a portion of the screen module 29 in the direction Oy, as will be explained below.
  • the opening 49 extends for example substantially parallel to the plane Ox, Oz.
  • the movable carriage 35 ( Figures 7 and 8 ) comprises a plate 51, sliders 53, 54, 55 fixed to the plate 51 and movably mounted on the rails 41, 43 of the frame 27 ( Figure 5 ), and a yoke 57 fixed on the plate 51 and defining a cam path 59 adapted to cooperate with the roller 27 of the object holder module 5 ( Figure 2 ).
  • the screen module 29 ( Figures 9, 10 and 11 ) comprises a support 61, an adjustable screen door 63, a screen 65 held by the screen holder 63, an actuator 67, and sliders 69, 71, 73, 75 fixed to the support 61 and movably mounted on the rails 38, 39 of chassis 27 ( Figure 5 ).
  • the screen module 29 further comprises an indexing member 77 ( Figures 9, 10 and 11 ) of the position of the screen module 29 relative to the doctor blade module 31 in the pressing direction Oz.
  • the position of the support 61 ( Figures 2 and 10 ) relative to the frame 27 defines for example the position in the pressing direction (Oz) of the screen module 29.
  • the adjustable screen door 63 is movably mounted in translation substantially in the print direction Ox on the support 61.
  • the actuator 67 extends into the opening 49 of the frame 27 ( Figure 5 ) substantially in the direction Oy.
  • the actuator 67 is able to move the screen holder 63 relative to the frame 61 in the print direction Ox.
  • the indexing member 77 comprises a base 79 fixed on the support 61, a rod 80 projecting from the base 79 substantially vertically and upwards, and a head 81 located at the end of the rod 80 and advantageously wider than the rod 80.
  • the head 81 of the indexing member 77 defines, by a lower surface, a stop C ( Figures 10 and 11 ) stop the display module 29 to the object holder module 5 in the pressing direction Oz.
  • the base 79 of the indexing member 77 defines, by an upper surface, a stop D ( Figures 10 and 11 ) for stopping the display module 29 to the doctor blade module 31 in the pressing direction Oz.
  • the screen 65 is advantageously rectangular.
  • the sides of the screen are substantially parallel respectively to the directions Ox and Oy.
  • the scraper door module 31 comprises a support 83, slides 85, 87, 89, 91 fixed on the support 83 and movably mounted on the rails 38, 39 of the frame 27 ( Figure 5 ), and a doctor blade 93 fixed on the support 83.
  • the scraper door module 31 is movable relative to the screen module 29 according to the pressing direction Oz between a relative position of use visible on the Figures 1 , 2 , 4 , and 15 , in which the scraper door module 31 is close to the screen module 29, and a differential lift position visible on the Figures 3 , 16 and 17 , in which the racking module 31 is removed from the screen module 29.
  • the scraper door module 31 in the differential lifting position, is separated from the screen holder module 29, with respect to the relative position of use, with a height H of between 15 mm and 60 mm, advantageously equal to about 30 mm.
  • the door scrapes 93 comprises a frame 95 mounted on the support 83, a carriage 97 movably mounted on the frame 95 in translation substantially in the print direction Ox with respect to the frame 95 ( Figure 18 ), an actuator 99 for moving the carriage 97 in translation substantially in the print direction Ox, and a doctor blade assembly 101 fixed on the carriage 97.
  • the squeegee assembly 101 includes a squeegee 103, a squeegee 105 for returning the ink by coating the screen 65, an actuator 107 for lowering and raising the squeegee 103 respectively towards and away from the screen 65 , and an actuator 109 for lowering and raising the squeegee 105 respectively towards and away from the screen 65.
  • the actuators 107, 109 are for example pneumatic cylinders.
  • the position of the support 83 ( Figures 2 and 13 ) relative to the frame 27 defines for example the position of the scraper door module 31 relative to the frame 27 in the pressing direction Oz.
  • the support 83 comprises a complementary indexing member 111 ( Figure 13 ) of the position of the screen module 29 relative to the doctor blade module 31 in the pressing direction Oz.
  • the complementary indexing member 111 is intended to cooperate with the indexing member 77 of the screen module 29 to limit the relative displacements of the screen module 29 relative to the doctor blade module 31 in the pressing direction Oz.
  • the complementary indexing member 111 comprises a lower surface defining a low stop D '( Figure 13 ) intended to cooperate with the stop D of the indexing member 77 ( Figures 2 and 15 ).
  • the supplementary indexing body 111 defines a housing 113 adapted to vertically retain the head 81 of the indexing member 77, for example by imprisoning the head 81.
  • the housing 113 has a lower surface forming a high stop C 'intended to cooperate with the stop C of the indexing member 77.
  • the stop C ' is in contact with the abutment C of the indexing member 77 when the scraper door module 31 is in the differential lifting position ( Figures 3 , 16 and 17 ).
  • the stop D ' is in contact with the stop D of the indexing member 77 when the scraper door module 31 is in the relative position of use ( Figures 1 , 2 , 4 and 15 ).
  • the fixing system 37 comprises a rack 115 fixed substantially vertically on the support 61 of the screen module 29 ( Figures 9 to 11 ), a lock 117 ( Figure 5 ) fixed on the support 45 of the frame 27 and mounted movably between a closed position, in which it meshes with the rack 115, and an open position (not shown), in which the lock 117 is spaced from the rack 115, and an actuator 119 of movement of the lock 117.
  • the rack 115 is fixed on the frame 27 and the lock 117 is fixed on the screen module 29.
  • the rack 115 is replaced by a track and the lock 117 by a brake for cooperating with the track.
  • the latch 117 comprises a finger 119 mounted to move on the support 45 in rotation about an axis 121, and at least one tooth 123 located at a distal end of the finger 119, on the side of the rack 115.
  • the lock defines an attachment point A of the screen module 29 on the frame 27.
  • the fixing point A is advantageously adjustable in the pressing direction Oz relative to the frame 27, defining a plurality of positions of use of the head of the 7. Each use position corresponds to a position of the screen module 29 according to the pressing direction Oz with respect to the frame 27.
  • the finger 119 extends substantially vertically upwards in the closed position of the lock 117.
  • the axis 121 is for example substantially parallel to the direction Oy.
  • the actuator 8 comprises a first portion 125 ( Figures 2 and 8 ) fixed on the movable carriage 35, and a second part 127 ( Figures 2 and 13 ) attached to the print head 7.
  • the second part 127 comprises a motor 129 fixed on the support 83 of the doctor blade module 31, and a threaded shaft 131 extending for example substantially vertically and rotated by the motor 129.
  • the first part 125 comprises a base 133 fixed on the carriage 35 movable only in translation in the direction of the shaft 131, and a ball nut 135 fixed in rotation and in translation on the base 133 and in which is screwed the tree 131.
  • the nut 135 is movable in translation along the shaft 131 by screwing the shaft 131 unscrewed.
  • the base 133 has a lower surface defining a stop B 'intended to cooperate with the abutment B of the frame 27 ( Figures 3 , 8 , 16 and 17 ).
  • a force sensor 137 ( Figure 6 ) is located on the abutment B or on the abutment B 'for measuring forces transmitted between the abutments B and B'.
  • the print head 7 When the device 1 makes an impression on the object 3, the print head 7 is in the position of use shown on the Figures 1 , 2 and 4 .
  • the screen module 29 is then immobilized relative to the frame 27 by the fastening system 37.
  • the tooth 123 meshes on the rack 115 at point A, ensuring the immobilization.
  • the position of the point A determines the position of the screen module 29 with respect to the frame 27 in the pressing direction Oz, which corresponds to an elevation of the screen 65.
  • the actuator 67 controls the position of the screen holder 63 and the screen. screen 35 according to the print direction Ox.
  • the squeegee door module 31 is in the relative position of use allowing the use of the doctor blade 103 and against the squeegee 105 on the screen 65 in a manner known per se to perform a screen printing.
  • the scraper door module 31 then rests on the screen module 29 by a contact of the abutment D 'on the stop D as illustrated in FIG. figure 4 .
  • the doctor blade module 31 thus rests indirectly on the frame 27 via the screen module 29.
  • the actuator 99 controls the position of the carriage 97 and the positions of the doctor blade 103 and the doctor blade 105 in the print direction Ox.
  • the pneumatic actuators 107 enable the doctor blade 103 and the doctor blade 105 respectively to be brought into contact with the screen 65 in the direction Oz.
  • the motor 129 of the actuator 8 unscrews the shaft 131 in the ball nut 135, which lowers the first portion 125, the second portion 127 supported on the frame 27 via the print head 7.
  • the stop B 'then comes into contact with the stop B.
  • the print head 7 is then in the position shown on the Figure 15 .
  • the actuator 8 operates in a first mode of operation, in which the first part 125 bears on the frame 27 and the second part 127 moves the print head 7 relative to the frame 27.
  • the unscrewing movement of the shaft 131 stands continuing and the first part 125 being supported on the frame 27 by the stop B 'in contact with the stop B', the second part 127 raises the print head 7 relative to the frame 27.
  • the fixing system 37 then releases the screen module 29 which remains held relative to the frame 27 by the cooperation between the indexing member 77 and the complementary indexing member 111.
  • the screen module 29 and the squeegee module 31 mount together to the maintenance position of the print head 7 shown in FIG. Figures 3 and 17 . It is then possible to carry out a maintenance operation on the screen 65 or the doctor blade 103, the print head 7 being away from the object holder module 5.
  • the doctor blade module 31 is advantageously placed automatically in the position differential lift.
  • the motor 129 screws the shaft 131 into the ball nut 135.
  • the print head 7 descends relative to the frame 27.
  • the screen module 29 is locked in its initial position of the Figure 15 .
  • the scraper door module 31 continues its descent and moves from the differential lifting position to the relative position of use, the stops D and D 'being in contact.
  • the screen module 29 is not blocked in its initial position of the Figure 15 but in another position. This advantageously makes it possible to move the print head 7 from the use position represented on the Figure 15 at another position of use higher or lower with respect to the frame 27.
  • the print head 7 is, as described above, in the position of use ( Figures 1 , 2 and 4 ).
  • the turntable Prior to printing on the object 3, the turntable comes to place the object holder module 5 under the print head 7. Under the print head 7, the object holder module moves substantially tangentially to the direction of printing. Ox printing.
  • the roller 27 ( Figure 2 ) then engages in the cam path 59 of the movable carriage 35. This makes the carriage 11 of the object carrier module 5 and the carriage 35 integral in elevation with respect to the frame 27.
  • the carriage 35 is also integral in elevation of the first part 125 of the actuator 8.
  • the position of the first portion 125 relative to the frame 27 determines the elevation of the object holder module 5 when the abutments B and B 'are no longer in contact.
  • the inclination of the arm 13 and the object 3 around the axis 15 is adjusted using means 17, 19.
  • the actuator 25 controls the position of the object 3 in rotation about the axis 23 during printing.
  • the actuator 8 then operates in a second operating mode.
  • the second part 127 of the actuator is supported on the frame 27 via the doctor blade module 31 and the screen holder module 29.
  • the actuator 8 modifies the elevation of the object holder module 5 by compared to the chassis 27.
  • the force sensor 137 provides information on the configuration in which the device 1 is located. If the force measured by the sensor 137 is substantially zero, the actuator 8 is in the second mode of operation, in which it there is no contact between the abutments B and B '. If the force measured by the sensor 137 is substantially non-zero, for example greater than a threshold value, then the actuator 8 is in the first mode of operation. If the force measured by the sensor 137 is substantially equal to the weight of the actuator 8, the carriage 35 and the print head, it is that the actuator 8 carries the print head 7. It is also it is possible to detect the configurations in which the actuator 8 bears only the scraper door module 31. A force greater than the weight of the actuator 8, the carriage 35 and the print head 7 signals, for example, a locking of the parking system. fixing 37.
  • the first mode of operation and the second mode of operation of the actuator 8 it is possible, with the same actuator 8, to move the print head 7 from the position of use at the maintenance position, and change the elevation of the object holder module 5 relative to the frame 27. This simplifies the printing device 1 and reduces its cost, while retaining features comparable to a printing device having two actuators.
  • the device 1 has the additional advantage of have a plurality of positions of use of the print head 7, the actuator 8 being able to move the print head 7 from one to the other of the use positions.
  • the actuator 8 is also able to move the doctor blade module 31 from the use position to the differential lifting position.

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

Description

La présente invention concerne un dispositif pour réaliser une impression sérigraphique sur au moins un objet, du type comprenant :

  • un châssis,
  • un module porte objet destiné à porter l'objet, le module porte objet étant mobile par rapport au châssis selon une direction de pressage,
  • une tête d'impression comportant un module porte écran destiné à porter un écran et un module porte racle destiné à porter une racle située en regard de l'écran, la tête d'impression étant mobile par rapport au châssis entre une position d'utilisation proche du module porte objet, et une position de maintenance à l'écart du module porte objet, et
  • un actionneur comportant une première partie et une seconde partie mobile par rapport à la première partie, l'actionneur étant propre, dans un premier mode de fonctionnement, à prendre appui sur le châssis par sa première partie et à déplacer la tête d'impression de la position d'utilisation à la position de maintenance par un mouvement de la seconde partie.
The present invention relates to a device for producing a screen printing on at least one object, of the type comprising:
  • a chassis,
  • an object holder module for carrying the object, the object holder module being movable relative to the frame in a pressing direction,
  • a print head comprising a screen module intended to carry a screen and a doctor blade module intended to carry a doctor blade located opposite the screen, the print head being movable relative to the frame between a position of use close to the object holder module, and a maintenance position away from the object holder module, and
  • an actuator having a first portion and a second portion movable relative to the first portion, the actuator being clean, in a first mode of operation, to bear on the frame by its first portion and to move the print head of the use position at the maintenance position by a movement of the second part.

On sait que l'écran forme un pochoir destiné à être appliqué sur l'objet à imprimer. Le rôle de la racle est de forcer une encre appliquée sur l'écran à passer à travers des mailles libres de l'écran.It is known that the screen forms a stencil intended to be applied to the object to be printed. The role of the squeegee is to force an ink applied on the screen to pass through the free mesh of the screen.

Un ensemble d'actionneurs permet d'obtenir des mouvements de la tête d'impression et du module porte objet afin de mener à bien les opérations d'impression alors que la tête d'impression se trouve dans la position d'utilisation.A set of actuators makes it possible to obtain movements of the print head and the object holder module in order to carry out the printing operations while the print head is in the position of use.

Afin de changer l'écran, ou bien de le nettoyer si, par exemple, une poussière vient obstruer une des mailles, il est connu de lever la tête d'impression de la position d'utilisation à la position de maintenance pour permettre un accès facile à l'écran. Ce mouvement est effectué en dehors des opérations d'impression, il fait partie de la maintenance du dispositif.In order to change the screen, or to clean it if, for example, a dust clogs one of the meshes, it is known to raise the print head from the use position to the maintenance position to allow access easy on the screen. This movement is performed outside printing operations, it is part of the maintenance of the device.

Pour obtenir ce mouvement de levage, il est connu de monter la tête d'impression sur un parallélogramme ou des guidages verticaux actionné par un actionneur dédié, par exemple un vérin pneumatique. L'actionneur est typiquement fixé sur le châssis par sa première partie, la seconde partie portant la tête d'impression.To obtain this lifting movement, it is known to mount the print head on a parallelogram or vertical guides actuated by a dedicated actuator, for example a pneumatic cylinder. The actuator is typically fixed to the frame by its first portion, the second portion carrying the print head.

Par ailleurs, pour modifier l'élévation du module porte objet, il est connu de l'actionner grâce à un moteur spécifique, par exemple un moteur à commande numérique.Moreover, to modify the elevation of the object carrier module, it is known to actuate it by means of a specific motor, for example a numerically controlled motor.

Il en résulte un dispositif d'impression complexe, et donc coûteux. Le document US-A-3 249 044 décrit un dispositif selon le préambule de la revendication 1.This results in a complex printing device, and therefore expensive. The document US-A-3,249,044 describes a device according to the preamble of claim 1.

Un but de l'invention est donc de simplifier le dispositif d'impression, afin d'en réduire le coût, tout en lui conservant des fonctionnalités comparables.An object of the invention is therefore to simplify the printing device, in order to reduce the cost, while retaining comparable functionality.

A cet effet, l'invention a pour objet un dispositif pour réaliser une impression sérigraphique sur au moins un objet, du type décrit ci-dessus, dans lequel l'actionneur est propre, dans un second mode de fonctionnement, à prendre appui sur le châssis par la seconde partie et à déplacer le module porte objet selon la direction de pressage par rapport au châssis par un mouvement de la première partie.For this purpose, the subject of the invention is a device for producing a screen printing on at least one object, of the type described above, in which the actuator is clean, in a second mode of operation, to be supported on the frame by the second part and moving the object holder module in the direction of pressing relative to the frame by a movement of the first part.

Selon des modes particuliers de réalisation, le dispositif comprend l'une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou selon toutes les combinaisons techniquement possibles :

  • dans le premier mode de fonctionnement, la première partie de l'actionneur prend appui sur une butée du châssis ;
  • le dispositif comprend un système de fixation destiné, sélectivement, à fixer le module porte écran sur le châssis de sorte que la tête d'impression forme un appui pour la seconde partie de l'actionneur, et à libérer le module porte écran pour autoriser ledit déplacement de la tête d'impression de la position d'utilisation à la position de maintenance ;
  • le système de fixation est réglable selon la direction de pressage pour sélectivement fixer le module porte écran sur le châssis dans une pluralité de positions selon la direction de pressage définissant une pluralité de positions d'utilisation de la tête d'impression, l'actionneur étant propre, dans le premier mode de fonctionnement, à déplacer la tête d'impression de l'une quelconque des positions d'utilisation de ladite pluralité à une autre quelconque des positions d'utilisation de ladite pluralité lorsque le module porte écran est libéré par rapport au châssis ;
  • le système de fixation comprend une crémaillère fixée sur l'un du module porte écran et du châssis, et un verrou fixé sur l'autre du module porte écran et du châssis, le verrou étant mobile sélectivement entre une position fermée dans laquelle le verrou engrène sur la crémaillère pour bloquer le module porte écran par rapport au châssis selon la direction de pressage et une position ouverte pour libérer le module porte écran ;
  • le module porte écran est monté mobile relativement au module porte racle selon la direction de pressage, et le module porte écran comprend un organe d'indexation et le module porte racle comprend un organe complémentaire d'indexation, l'organe d'indexation du module porte écran étant propre à coopérer avec l'organe complémentaire d'indexation pour définir une position relative d'usage du module porte racle par rapport au module porte écran destinée à permettre un contact entre la racle et l'écran, et dans laquelle l'organe d'indexation forme une butée basse pour l'organe complémentaire d'indexation, et une position de relevage différentiel du module porte racle par rapport au module porte écran destinée à éloigner la racle de l'écran, et dans laquelle l'organe complémentaire d'indexation forme une butée basse pour l'organe d'indexation ;
  • l'organe d'indexation comprend une base, une tige s'étendant selon la direction de pressage, et une tête plus large que la tige, et l'organe complémentaire d'indexation définit un logement s'étendant selon la direction de pressage et propre à recevoir la tête, le logement comportant une ouverture resserrée autour de la tige de manière à emprisonner la tête, la tête étant propre à buter sur l'ouverture du logement, et l'ouverture du logement étant propre à buter sur la base ;
  • l'organe d'indexation et l'organe complémentaire d'indexation sont dimensionnés de sorte que, dans la position de relevage différentiel, par rapport à la position relative d'usage, le module porte racle est écarté du module porte écran d'une hauteur comprise entre 15 mm et 60 mm, de préférence égale à environ 30 mm ;
  • l'actionneur comprend un arbre fileté, un écrou à billes monté mobile, seulement en translation sur l'arbre, et un moteur pour entraîner l'arbre en rotation axiale ;
  • l'écrou à billes est situé dans la première partie de l'actionneur, et le moteur est situé dans la seconde partie ;
  • le dispositif comprend un capteur de pression propre à être comprimé entre le châssis et la première partie de l'actionneur pour mesurer des efforts transmis au châssis par la première partie de l'actionneur.
According to particular embodiments, the device comprises one or more of the following characteristics, taken in isolation or in any technically possible combination:
  • in the first mode of operation, the first part of the actuator is supported on a stop of the frame;
  • the device comprises an attachment system for selectively fixing the display module to the frame so that the print head forms a support for the second part of the actuator, and to release the display module to allow said moving the print head from the use position to the maintenance position;
  • the fastening system is adjustable in the pressing direction for selectively fixing the display module to the frame in a plurality of positions in the pressing direction defining a plurality of print head operating positions, the actuator being clean, in the first mode of operation, to move the print head from any of the plurality of use positions to any one of the plurality of use positions when the screen module is released relative to chassis;
  • the fixing system comprises a rack fixed on one of the screen module and the chassis, and a latch fixed on the other of the screen module and the chassis, the latch being selectively movable between a closed position in which the latch engages on the rack for locking the screen module relative to the frame in the pressing direction and an open position to release the screen module;
  • the screen module is mounted movably relative to the scraper door module according to the pressing direction, and the screen door module comprises an indexing member and the scraper door module comprises a complementary indexing member, the indexing member of the module screen door being adapted to cooperate with the complementary indexing member to define a relative position of use of the scraper door module relative to the screen door module intended to allow contact between the doctor blade and the screen, and wherein the indexing member forms a bottom stop for the complementary indexing member, and a differential lifting position of the door module scrapes with respect to the screen holder module for moving the doctor blade away from the screen, and in which the complementary indexing member forms a bottom stop for the indexing member;
  • the indexing member comprises a base, a rod extending in the pressing direction, and a head wider than the rod, and the complementary indexing member defines a housing extending in the pressing direction and adapted to receive the head, the housing having an opening constricted around the rod so as to trap the head, the head being adapted to abut on the opening of the housing, and the opening of the housing being able to abut on the base;
  • the indexing member and the complementary indexing member are dimensioned so that, in the differential lifting position, relative to the relative position of use, the scraper door module is removed from the screen door module of a height between 15 mm and 60 mm, preferably equal to about 30 mm;
  • the actuator comprises a threaded shaft, a ball nut mounted movably, only in translation on the shaft, and a motor for driving the shaft in axial rotation;
  • the ball nut is located in the first part of the actuator, and the motor is located in the second part;
  • the device comprises a pressure sensor adapted to be compressed between the frame and the first part of the actuator for measuring forces transmitted to the frame by the first part of the actuator.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés, sur lesquels :

  • la Figure 1 est une vue en perspective d'un dispositif selon l'invention, selon un angle de vue d'environ 30° par rapport à une vue de face, l'actionneur étant dans le second mode de fonctionnement, la tête d'impression étant dans la position d'utilisation,
  • la Figure 2 est une vue de gauche du dispositif représenté sur la Figure 1,
  • les figures 3 et 4 sont des schémas cinématiques du dispositif représenté sur les Figures 1 et 2, illustrant respectivement le premier mode de fonctionnement et le second mode de fonctionnement de l'actionneur,
  • la Figures 5 et 6 sont deux vues en perspective du châssis du dispositif représenté sur les Figures 1 et 2,
  • les Figures 7 et 8 sont respectivement une vue en perspective et une vue de gauche d'une partie de l'actionneur et d'un chariot mobile du dispositif représenté sur les Figures 1 et 2,
  • les Figures 9, 10 et 11 sont respectivement une vue en perspective, une vue de gauche et une vue de derrière du module porte écran du dispositif représenté sur les Figures 1 et 2,
  • les Figures 12, 13 et 14 sont respectivement une vue en perspective, une vue de gauche et une vue de derrière du module porte racle du dispositif représenté sur les Figures 1 et 2 et d'une partie de l'actionneur, complémentaire de la partie représentée sur les Figures 7 et 8,
  • la Figure 15 est une vue de gauche, sans le module porte objet, du dispositif représenté sur les Figures 1 et 2, la tête d'impression étant dans la position d'utilisation, l'actionneur étant dans le premier mode de fonctionnement,
  • la Figure 16 est une vue de gauche, sans le module porte objet, du dispositif représenté sur les Figures 1, 2 et 15, l'actionneur étant dans le premier mode de fonctionnement, le module porte racle étant dans la position de relevage différentiel,
  • la Figure 17 est une vue de gauche, sans le module porte objet, du dispositif représenté sur les Figures 1, 2, 15 et 16, l'actionneur étant dans le premier mode de fonctionnement, la tête d'impression étant dans la position de maintenance, et
  • la Figure 18 est une vue en perspective d'une partie du module porte racle.
The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which:
  • the Figure 1 is a perspective view of a device according to the invention, at an angle of view of approximately 30 ° with respect to a front view, the actuator being in the second mode of operation, the print head being in the position of use,
  • the Figure 2 is a left view of the device shown on the Figure 1 ,
  • the Figures 3 and 4 are kinematic diagrams of the device represented on the Figures 1 and 2 illustrating respectively the first mode of operation and the second mode of operation of the actuator,
  • the Figures 5 and 6 are two perspective views of the chassis of the device shown in Figures 1 and 2 ,
  • the Figures 7 and 8 are respectively a perspective view and a left view of a portion of the actuator and a movable carriage of the device shown in the drawings. Figures 1 and 2 ,
  • the Figures 9, 10 and 11 are respectively a perspective view, a left view and a rear view of the screen module of the device shown in the drawings. Figures 1 and 2 ,
  • the Figures 12 , 13 and 14 are respectively a perspective view, a left view and a rear view of the doctor blade module of the device shown in the drawings. Figures 1 and 2 and a part of the actuator, complementary to the part shown on the Figures 7 and 8 ,
  • the Figure 15 is a left view, without the object module, of the device represented on the Figures 1 and 2 , the print head being in the use position, the actuator being in the first operating mode,
  • the Figure 16 is a left view, without the object module, of the device represented on the Figures 1 , 2 and 15 , the actuator being in the first operating mode, the scraper door module being in the differential lifting position,
  • the Figure 17 is a left view, without the object module, of the device represented on the Figures 1 , 2 , 15 and 16 the actuator being in the first operating mode, the print head being in the maintenance position, and
  • the Figure 18 is a perspective view of a portion of the scraper door module.

En référence aux Figures 1 à 4, on décrit un dispositif 1 selon l'invention pour réaliser une impression sérigraphique sur un objet 3.With reference to Figures 1 to 4 , a device 1 according to the invention is described for producing a screen printing on an object 3.

Par « prendre appui sur le châssis », on entend, pour la première partie de l'actionneur comme pour la seconde partie, le fait que la partie en question, directement ou indirectement, s'appuie sur le châssis. Un appui direct de la partie en question est par exemple le fait de reposer sur le châssis ou d'être fixé sur le châssis. Un appui indirect est par exemple le fait de reposer, ou d'être fixé, sur un élément reposant lui-même, ou étant lui-même fixé sur le châssis.By "support on the chassis" means, for the first part of the actuator as for the second part, the fact that the part in question, directly or indirectly, based on the frame. A direct support of the party in question is for example the fact of resting on the frame or to be fixed on the frame. An indirect support is for example the fact of resting, or being fixed on a resting element itself, or being itself fixed on the frame.

L'objet 3 est par exemple un flacon en verre, de forme générale cylindrique. En variante (non représentée), l'objet 3 est de forme générale conique, ovoïde, ou bien encore à facettes multiples.The object 3 is for example a glass bottle, of generally cylindrical shape. Alternatively (not shown), the object 3 is generally conical, ovoid, or even multifaceted.

Le dispositif 1 s'étend selon une direction de pressage Oz, par exemple sensiblement verticale. On définit en outre deux directions Ox, Oy horizontales et perpendiculaires entre elles, le repère Ox, Oy, Oz étant direct.The device 1 extends in a pressing direction Oz, for example substantially vertical. Two directions Ox, Oy horizontal and perpendicular to each other are defined, the reference Ox, Oy, Oz being direct.

L'objet 3 s'étend principalement, dans l'exemple représenté, selon la direction Oy.The object 3 extends mainly, in the example shown, in the direction Oy.

Le dispositif 1 comprend un module porte objet 5 situé en bas du dispositif 1 et portant l'objet 3, une tête d'impression 7 située au dessus du module porte objet 5, et un actionneur 8 de relevage la tête d'impression 7 et du module porte objet 5.The device 1 comprises an object holder module 5 located at the bottom of the device 1 and carrying the object 3, a print head 7 located above the object holder module 5, and an actuator 8 for raising the print head 7 and of the object holder module 5.

Comme visible sur le Figure 2, le module porte objet 5 comprend un bâti 9, un chariot 11 monté mobile par rapport bâti 9 selon la direction de pressage Oz, un bras 13 monté pivotant sur le chariot 11 autour d'un axe 15 orienté sensiblement selon la direction d'impression Ox.As visible on the Figure 2 , the object holder module 5 comprises a frame 9, a carriage 11 mounted movable relative to the frame 9 in the pressing direction Oz, an arm 13 pivotally mounted on the carriage 11 about an axis 15 oriented substantially in the printing direction Ox.

Le module porte objet 5 comprend en outre des moyens 17, 19 de réglage de l'angle fait par le bras 13 par rapport au bâti 9 autour de l'axe 15. Le réglage en inclinaison permet l'impression, par exemple, sur un objet 3 de forme conique.The object holder module 5 further comprises means 17, 19 for adjusting the angle made by the arm 13 relative to the frame 9 about the axis 15. The tilt adjustment allows the printing, for example, on a object 3 of conical shape.

Le module porte objet 5 est mobile selon la direction de pressage Oz par rapport à la tête d'impression 7 du fait de la mobilité du chariot 11 par rapport au bâti 9.The object holder module 5 is movable in the pressing direction Oz with respect to the print head 7 due to the mobility of the carriage 11 relative to the frame 9.

Le bras 13 est, dans l'exemple représenté, sensiblement horizontal et s'étend alors sensiblement selon la direction Oy.The arm 13 is, in the example shown, substantially horizontal and then extends substantially in the direction Oy.

Le bras 13 comprend des organes 20, 21 de tenue de l'objet 3.The arm 13 comprises members 20, 21 for holding the object 3.

Les organes 20, 21 sont adaptables aux dimensions de l'objet 3. Les organes 20, 21 sont montés rotatifs autour d'un axe 23 lié au bras 13. Les organes 20, 21 sont entraînés en rotation par exemple par un actionneur 25 solidaire du bras 13.The members 20, 21 are adaptable to the dimensions of the object 3. The members 20, 21 are rotatably mounted about an axis 23 connected to the arm 13. The members 20, 21 are rotated for example by an integral actuator 25 of the arm 13.

L'axe 23 s'étend sensiblement selon la direction Oy dans l'exemple représenté.The axis 23 extends substantially in the direction Oy in the example shown.

Le chariot 11 comporte un galet 27 de contrôle en élévation du bras 13 par rapport au bâti 9.The carriage 11 comprises a roller 27 controlling the elevation of the arm 13 relative to the frame 9.

Le galet 27 fait saillie à partir du chariot 11 sensiblement selon la direction Oy. Le galet 27 est par exemple situé sensiblement au sommet du chariot 11.The roller 27 protrudes from the carriage 11 substantially in the direction Oy. The roller 27 is for example located substantially at the top of the carriage 11.

Selon des modalités connues en elles-mêmes, le bâti 9 du module porte objet 5 est avantageusement monté sur un plateau tournant (non représenté) comportant d'autres modules porte objet analogues au module porte objet 5 pour porter d'autres objets. Le plateau tournant est par exemple de type « carrousel », c'est-à-dire monté rotatif autour d'un axe sensiblement vertical, ou de type « révolver », c'est-à-dire monté rotatif autour d'un axe sensiblement horizontal, par exemple sensiblement parallèle à la direction Oy.According to known methods in themselves, the frame 9 of the object holder module 5 is advantageously mounted on a turntable (not shown) comprising other object-type modules similar to the object holder module 5 for carrying other objects. The turntable is for example of the "carousel" type, that is to say rotatably mounted about a substantially vertical axis, or "revolver" type, that is to say rotatably mounted about an axis substantially horizontal, for example substantially parallel to the direction Oy.

En référence aux Figures 1 et 2, la tête d'impression 7 comprend un châssis 27, un module porte écran 29 et un module porte racle 31 montés mobiles indépendamment l'un de l'autre en translation sensiblement verticale sur le châssis 27, et un chariot mobile 35 s'étendant verticalement entre l'actionneur 8 et le module porte objet 5.With reference to Figures 1 and 2 , the print head 7 comprises a frame 27, a screen module 29 and a doctor blade module 31 mounted movable independently of one another in substantially vertical translation on the frame 27, and a movable carriage 35 extending vertically between the actuator 8 and the object holder module 5.

La tête d'impression 7 comprend également un système de fixation 37 du module porte écran 29 sur le châssis 27, en plusieurs parties visibles notamment sur les Figures 2 à 6, et 9 à 11.The print head 7 also comprises a fastening system 37 of the display module 29 on the frame 27, in several visible parts, in particular on the Figures 2 to 6 , and 9 to 11 .

La tête d'impression 7 est mobile entre une position d'utilisation représentée sur les Figures 1, 2, 4 et 15 dans laquelle la tête d'impression 7 est proche du module porte objet 5, et une position de maintenance représentée sur les Figures 3 et 17, dans laquelle la tête d'impression 7 est écartée du module porte objet 5.The print head 7 is movable between a position of use shown on the Figures 1 , 2 , 4 and 15 in which the print head 7 is close to the door module object 5, and a maintenance position shown on the Figures 3 and 17 , in which the print head 7 is spaced from the object holder module 5.

Le châssis 27 (Figures 5 et 6) comprend des rails verticaux 38, 39 de montage du module porte écran 29 et du module porte racle 31, des rails 41, 43 de montage du chariot mobile 35, un support 45 d'une partie du système de fixation 37, et une patte 47 comportant une surface supérieure formant une butée B. Le châssis 27 définit avantageusement une ouverture 49 permettant le passage d'une partie du module porte écran 29 selon la direction Oy, comme cela sera expliqué ci-dessous.The frame 27 ( Figures 5 and 6 ) comprises vertical rails 38, 39 for mounting the screen module 29 and the doctor blade module 31, rails 41, 43 for mounting the mobile carriage 35, a support 45 for a part of the fixing system 37, and a bracket 47 having an upper surface forming a stop B. The frame 27 advantageously defines an opening 49 allowing the passage of a portion of the screen module 29 in the direction Oy, as will be explained below.

L'ouverture 49 s'étend par exemple sensiblement parallèlement au plan Ox,Oz.The opening 49 extends for example substantially parallel to the plane Ox, Oz.

Le chariot mobile 35 (Figures 7 et 8) comprend une plaque 51, des coulisseaux 53, 54, 55 fixés sur la plaque 51 et montés mobiles sur les rails 41, 43 du châssis 27 (Figure 5), et une chape 57 fixée sur la plaque 51 et définissant un chemin de came 59 propre à coopérer avec le galet 27 du module porte objet 5 (Figure 2).The movable carriage 35 ( Figures 7 and 8 ) comprises a plate 51, sliders 53, 54, 55 fixed to the plate 51 and movably mounted on the rails 41, 43 of the frame 27 ( Figure 5 ), and a yoke 57 fixed on the plate 51 and defining a cam path 59 adapted to cooperate with the roller 27 of the object holder module 5 ( Figure 2 ).

Le module porte écran 29 (Figures 9, 10 et 11) comprend un support 61, un porte écran réglable 63, un écran 65 tenu par le porte écran 63, un actionneur 67, et des coulisseaux 69, 71, 73, 75 fixés sur le support 61 et montés mobiles sur les rails 38, 39 du châssis 27 (Figure 5).The screen module 29 ( Figures 9, 10 and 11 ) comprises a support 61, an adjustable screen door 63, a screen 65 held by the screen holder 63, an actuator 67, and sliders 69, 71, 73, 75 fixed to the support 61 and movably mounted on the rails 38, 39 of chassis 27 ( Figure 5 ).

Le module porte écran 29 comprend en outre un organe d'indexation 77 (Figures 9, 10 et 11) de la position du module porte écran 29 par rapport au module porte racle 31 selon la direction de pressage Oz.The screen module 29 further comprises an indexing member 77 ( Figures 9, 10 and 11 ) of the position of the screen module 29 relative to the doctor blade module 31 in the pressing direction Oz.

La position du support 61 (Figures 2 et 10) par rapport au châssis 27 définit par exemple la position selon la direction de pressage (Oz) du module porte écran 29.The position of the support 61 ( Figures 2 and 10 ) relative to the frame 27 defines for example the position in the pressing direction (Oz) of the screen module 29.

Le porte écran réglable 63 est monté mobile, en translation sensiblement selon la direction d'impression Ox sur le support 61.The adjustable screen door 63 is movably mounted in translation substantially in the print direction Ox on the support 61.

L'actionneur 67 s'étend dans l'ouverture 49 du châssis 27 (Figure 5) sensiblement selon la direction Oy. L'actionneur 67 est propre à déplacer le porte écran 63 par rapport au bâti 61 selon la direction d'impression Ox.The actuator 67 extends into the opening 49 of the frame 27 ( Figure 5 ) substantially in the direction Oy. The actuator 67 is able to move the screen holder 63 relative to the frame 61 in the print direction Ox.

L'organe d'indexation 77 comporte une base 79 fixée sur le support 61, une tige 80 faisant saillie à partir de la base 79 sensiblement verticalement et vers le haut, et une tête 81 située à l'extrémité de la tige 80 et avantageusement plus large que la tige 80.The indexing member 77 comprises a base 79 fixed on the support 61, a rod 80 projecting from the base 79 substantially vertically and upwards, and a head 81 located at the end of the rod 80 and advantageously wider than the rod 80.

La tête 81 de l'organe d'indexation 77 définit, par une surface inférieure, une butée C (Figures 10 et 11) d'arrêt du module porte écran 29 vers le module porte objet 5 dans la direction de pressage Oz.The head 81 of the indexing member 77 defines, by a lower surface, a stop C ( Figures 10 and 11 ) stop the display module 29 to the object holder module 5 in the pressing direction Oz.

La base 79 de l'organe d'indexation 77 définit, par une surface supérieure, une butée D (Figures 10 et 11) d'arrêt du module porte écran 29 vers le module porte racle 31 dans la direction de pressage Oz.The base 79 of the indexing member 77 defines, by an upper surface, a stop D ( Figures 10 and 11 ) for stopping the display module 29 to the doctor blade module 31 in the pressing direction Oz.

L'écran 65 est avantageusement rectangulaire. Par exemple, les côtés de l'écran sont sensiblement parallèles respectivement aux directions Ox et Oy.The screen 65 is advantageously rectangular. For example, the sides of the screen are substantially parallel respectively to the directions Ox and Oy.

Comme visible sur les Figures 12, 13 et 14, le module porte racle 31 comprend un support 83, des coulisseaux 85, 87, 89, 91 fixés sur le support 83 et montés mobiles sur les rails 38, 39 du châssis 27 (Figure 5), et un porte racle 93 fixé sur le support 83.As visible on Figures 12 , 13 and 14 , the scraper door module 31 comprises a support 83, slides 85, 87, 89, 91 fixed on the support 83 and movably mounted on the rails 38, 39 of the frame 27 ( Figure 5 ), and a doctor blade 93 fixed on the support 83.

Le module porte racle 31 est mobile par rapport au module porte écran 29 selon la direction de pressage Oz entre une position relative d'usage visible sur les Figures 1, 2, 4, et 15, dans laquelle le module porte racle 31 est proche du module porte écran 29, et une position de relevage différentiel visible sur les Figures 3, 16 et 17, dans laquelle le module porte racle 31 est écarté du module porte écran 29.The scraper door module 31 is movable relative to the screen module 29 according to the pressing direction Oz between a relative position of use visible on the Figures 1 , 2 , 4 , and 15 , in which the scraper door module 31 is close to the screen module 29, and a differential lift position visible on the Figures 3 , 16 and 17 , in which the racking module 31 is removed from the screen module 29.

Selon un mode particulier de réalisation, dans la position de relevage différentiel, le module porte racle 31 est écarté du module porte écran 29, par rapport à la position relative d'usage, d'une hauteur H comprise entre 15 mm et 60 mm, avantageusement égale à environ 30 mm.According to a particular embodiment, in the differential lifting position, the scraper door module 31 is separated from the screen holder module 29, with respect to the relative position of use, with a height H of between 15 mm and 60 mm, advantageously equal to about 30 mm.

Le porte racle 93, visible sur les Figures 12 et 18, comprend un bâti 95 monté sur le support 83, un chariot 97 monté mobile sur le bâti 95 en translation sensiblement selon la direction d'impression Ox par rapport au bâti 95 (Figure 18), un actionneur 99 pour déplacer le chariot 97 en translation sensiblement selon la direction d'impression Ox, et un ensemble porte racle 101 fixé sur le chariot 97.The door scrapes 93, visible on Figures 12 and 18 , comprises a frame 95 mounted on the support 83, a carriage 97 movably mounted on the frame 95 in translation substantially in the print direction Ox with respect to the frame 95 ( Figure 18 ), an actuator 99 for moving the carriage 97 in translation substantially in the print direction Ox, and a doctor blade assembly 101 fixed on the carriage 97.

L'ensemble porte racle 101 comprend une racle 103, une contre racle 105 destinée à ramener l'encre en nappant l'écran 65, un actionneur 107 pour abaisser et relever la racle 103 respectivement vers et à l'écart de l'écran 65, et un actionneur 109 pour abaisser et relever la contre racle 105 respectivement vers et à l'écart de l'écran 65.The squeegee assembly 101 includes a squeegee 103, a squeegee 105 for returning the ink by coating the screen 65, an actuator 107 for lowering and raising the squeegee 103 respectively towards and away from the screen 65 , and an actuator 109 for lowering and raising the squeegee 105 respectively towards and away from the screen 65.

Les actionneurs 107, 109 sont par exemple des vérins pneumatiques.The actuators 107, 109 are for example pneumatic cylinders.

La position du support 83 (Figures 2 et 13) par rapport au châssis 27 définit par exemple la position du module porte racle 31 par rapport au châssis 27 selon la direction de pressage Oz.The position of the support 83 ( Figures 2 and 13 ) relative to the frame 27 defines for example the position of the scraper door module 31 relative to the frame 27 in the pressing direction Oz.

Le support 83 comprend un organe complémentaire d'indexation 111 (Figure 13) de la position du module porte écran 29 par rapport au module porte racle 31 selon la direction de pressage Oz. L'organe complémentaire d'indexation 111 est destiné à coopérer avec l'organe d'indexation 77 du module porte écran 29 pour limiter les déplacements relatifs du module porte écran 29 par rapport au module porte racle 31 selon la direction de pressage Oz.The support 83 comprises a complementary indexing member 111 ( Figure 13 ) of the position of the screen module 29 relative to the doctor blade module 31 in the pressing direction Oz. The complementary indexing member 111 is intended to cooperate with the indexing member 77 of the screen module 29 to limit the relative displacements of the screen module 29 relative to the doctor blade module 31 in the pressing direction Oz.

L'organe complémentaire d'indexation 111 comporte une surface inférieure définissant une butée basse D' (Figure 13) destinée à coopérer avec la butée D de l'organe d'indexation 77 (Figures 2 et 15). L'organe complémentaire d'indexation 111 définit un logement 113 apte à retenir verticalement la tête 81 de l'organe d'indexation 77, par exemple en emprisonnant la tête 81.The complementary indexing member 111 comprises a lower surface defining a low stop D '( Figure 13 ) intended to cooperate with the stop D of the indexing member 77 ( Figures 2 and 15 ). The supplementary indexing body 111 defines a housing 113 adapted to vertically retain the head 81 of the indexing member 77, for example by imprisoning the head 81.

Le logement 113 comporte une surface inférieure formant une butée haute C' destinée à coopérer avec la butée C de l'organe d'indexation 77.The housing 113 has a lower surface forming a high stop C 'intended to cooperate with the stop C of the indexing member 77.

La butée C' est en contact avec la butée C de l'organe d'indexation 77 lorsque le module porte racle 31 est dans la position de relevage différentiel (Figures 3, 16 et 17).The stop C 'is in contact with the abutment C of the indexing member 77 when the scraper door module 31 is in the differential lifting position ( Figures 3 , 16 and 17 ).

La butée D' est en contact avec la butée D de l'organe d'indexation 77 lorsque le module porte racle 31 est dans la position relative d'usage (Figures 1, 2, 4 et 15).The stop D 'is in contact with the stop D of the indexing member 77 when the scraper door module 31 is in the relative position of use ( Figures 1 , 2 , 4 and 15 ).

Le système de fixation 37 comprend une crémaillère 115 fixée sensiblement verticalement sur le support 61 du module porte écran 29 (Figures 9 à 11), un verrou 117 (Figure 5) fixé sur le support 45 du châssis 27 et monté mobile entre une position fermée, dans laquelle il engrène sur la crémaillère 115, et une position ouverte (non représentée), dans laquelle le verrou 117 est écarté de la crémaillère 115, et un actionneur 119 de déplacement du verrou 117.The fixing system 37 comprises a rack 115 fixed substantially vertically on the support 61 of the screen module 29 ( Figures 9 to 11 ), a lock 117 ( Figure 5 ) fixed on the support 45 of the frame 27 and mounted movably between a closed position, in which it meshes with the rack 115, and an open position (not shown), in which the lock 117 is spaced from the rack 115, and an actuator 119 of movement of the lock 117.

Selon un autre mode de réalisation (non représenté), la crémaillère 115 est fixée sur le châssis 27 et le verrou 117 est fixé sur le module porte écran 29.According to another embodiment (not shown), the rack 115 is fixed on the frame 27 and the lock 117 is fixed on the screen module 29.

Selon d'autres modes de réalisation (non représentés), la crémaillère 115 est remplacée par une piste et le verrou 117 par un frein destiné à coopérer avec la piste.According to other embodiments (not shown), the rack 115 is replaced by a track and the lock 117 by a brake for cooperating with the track.

Dans l'exemple représenté, le verrou 117 comporte un doigt 119 monté mobile sur le support 45 en rotation autour d'un axe 121, et au moins une dent 123 située à une extrémité distale du doigt 119, du côté de la crémaillère 115.In the example shown, the latch 117 comprises a finger 119 mounted to move on the support 45 in rotation about an axis 121, and at least one tooth 123 located at a distal end of the finger 119, on the side of the rack 115.

Le verrou définit un point de fixation A du module porte écran 29 sur le châssis 27. Le point de fixation A est avantageusement réglable selon la direction de pressage Oz par rapport au châssis 27, définissant une pluralité de positions d'utilisation de la tête d'impression 7. Chaque position d'utilisation correspond à une position du module porte écran 29 selon la direction de pressage Oz par rapport au châssis 27.The lock defines an attachment point A of the screen module 29 on the frame 27. The fixing point A is advantageously adjustable in the pressing direction Oz relative to the frame 27, defining a plurality of positions of use of the head of the 7. Each use position corresponds to a position of the screen module 29 according to the pressing direction Oz with respect to the frame 27.

Le doigt 119 s'étend sensiblement verticalement vers le haut dans la position fermée du verrou 117.The finger 119 extends substantially vertically upwards in the closed position of the lock 117.

L'axe 121 est par exemple sensiblement parallèle à la direction Oy.The axis 121 is for example substantially parallel to the direction Oy.

L'actionneur 8 comprend une première partie 125 (Figures 2 et 8) fixée sur le chariot mobile 35, et une seconde partie 127 (Figures 2 et 13) fixée sur la tête d'impression 7.The actuator 8 comprises a first portion 125 ( Figures 2 and 8 ) fixed on the movable carriage 35, and a second part 127 ( Figures 2 and 13 ) attached to the print head 7.

La seconde partie 127 comprend un moteur 129 fixé sur le support 83 du module porte racle 31, et un arbre fileté 131 s'étendant par exemple sensiblement verticalement et entraîné en rotation par le moteur 129.The second part 127 comprises a motor 129 fixed on the support 83 of the doctor blade module 31, and a threaded shaft 131 extending for example substantially vertically and rotated by the motor 129.

La première partie 125 comporte une embase 133 fixée sur le chariot 35 mobile seulement en translation suivant la direction de l'arbre 131, et un écrou à billes 135 fixé en rotation et en translation sur l'embase 133 et dans lequel est vissé l'arbre 131.The first part 125 comprises a base 133 fixed on the carriage 35 movable only in translation in the direction of the shaft 131, and a ball nut 135 fixed in rotation and in translation on the base 133 and in which is screwed the tree 131.

L'écrou 135 est mobile en translation le long de l'arbre 131 par vissage dévissage de l'arbre 131.The nut 135 is movable in translation along the shaft 131 by screwing the shaft 131 unscrewed.

L'embase 133 comporte une surface inférieure définissant une butée B' destinée à coopérer avec la butée B du châssis 27 (Figures 3, 8, 16 et 17).The base 133 has a lower surface defining a stop B 'intended to cooperate with the abutment B of the frame 27 ( Figures 3 , 8 , 16 and 17 ).

Avantageusement, un capteur d'effort 137 (Figure 6) est situé sur la butée B ou sur la butée B' pour mesurer des efforts transmis entre les butées B et B'.Advantageously, a force sensor 137 ( Figure 6 ) is located on the abutment B or on the abutment B 'for measuring forces transmitted between the abutments B and B'.

Le fonctionnement du dispositif 1 va maintenant être décrit.The operation of the device 1 will now be described.

Lorsque le dispositif 1 réalise une impression sur l'objet 3, la tête d'impression 7 est dans la position d'utilisation représentée sur les Figures 1, 2 et 4. Le module porte écran 29 est alors immobilisé par rapport au châssis 27 par le système de fixation 37. La dent 123 engrène sur la crémaillère 115 au point A, assurant l'immobilisation.When the device 1 makes an impression on the object 3, the print head 7 is in the position of use shown on the Figures 1 , 2 and 4 . The screen module 29 is then immobilized relative to the frame 27 by the fastening system 37. The tooth 123 meshes on the rack 115 at point A, ensuring the immobilization.

La position du point A détermine la position du module porte écran 29 par rapport au châssis 27 selon la direction de pressage Oz, à laquelle correspond une élévation de l'écran 65. L'actionneur 67 contrôle la position du porte écran 63 et de l'écran 35 selon la direction d'impression Ox.The position of the point A determines the position of the screen module 29 with respect to the frame 27 in the pressing direction Oz, which corresponds to an elevation of the screen 65. The actuator 67 controls the position of the screen holder 63 and the screen. screen 35 according to the print direction Ox.

Le module porte racle 31 est dans la position relative d'usage permettant l'utilisation de la racle 103 et de la contre racle 105 sur l'écran 65 selon des modalités connues en elles-mêmes pour réaliser une impression sérigraphique. Le module porte racle 31 repose alors sur le module porte écran 29 par un contact de la butée D' sur la butée D comme illustré sur la figure 4. Le module porte racle 31 repose ainsi indirectement sur le châssis 27 via le module porte écran 29.The squeegee door module 31 is in the relative position of use allowing the use of the doctor blade 103 and against the squeegee 105 on the screen 65 in a manner known per se to perform a screen printing. The scraper door module 31 then rests on the screen module 29 by a contact of the abutment D 'on the stop D as illustrated in FIG. figure 4 . The doctor blade module 31 thus rests indirectly on the frame 27 via the screen module 29.

L'actionneur 99 contrôle la position du chariot 97 et les positions de la racle 103 et de la contre racle 105 selon la direction d'impression Ox. Les actionneurs pneumatiques 107 permettent d'amener respectivement la racle 103 et la contre racle 105 au contact de l'écran 65 selon la direction Oz.The actuator 99 controls the position of the carriage 97 and the positions of the doctor blade 103 and the doctor blade 105 in the print direction Ox. The pneumatic actuators 107 enable the doctor blade 103 and the doctor blade 105 respectively to be brought into contact with the screen 65 in the direction Oz.

Pour déplacer la tête d'impression 7 de la position d'utilisation à la position de maintenance, le moteur 129 de l'actionneur 8 dévisse l'arbre 131 dans l'écrou à billes 135, ce qui abaisse la première partie 125, la seconde partie 127 prenant appui sur le châssis 27 via la tête d'impression 7. La butée B' vient alors au contact de la butée B. La tête d'impression 7 est alors dans la position représentée sur la Figure 15.To move the print head 7 from the use position to the maintenance position, the motor 129 of the actuator 8 unscrews the shaft 131 in the ball nut 135, which lowers the first portion 125, the second portion 127 supported on the frame 27 via the print head 7. The stop B 'then comes into contact with the stop B. The print head 7 is then in the position shown on the Figure 15 .

L'actionneur 8 fonctionne dans un premier mode de fonctionnement, dans lequel la première partie 125 prend appui sur le châssis 27 et la seconde partie 127 déplace la tête d'impression 7 par rapport au châssis 27. Le mouvement de dévissage de l'arbre 131 se poursuivant et la première partie 125 étant appuyée sur le châssis 27 par la butée B' en contact avec la butée B', la seconde partie 127 relève la tête d'impression 7 par rapport au châssis 27.The actuator 8 operates in a first mode of operation, in which the first part 125 bears on the frame 27 and the second part 127 moves the print head 7 relative to the frame 27. The unscrewing movement of the shaft 131 stands continuing and the first part 125 being supported on the frame 27 by the stop B 'in contact with the stop B', the second part 127 raises the print head 7 relative to the frame 27.

Au début de ce mouvement, le module porte écran 29 étant fixé sur le châssis 27, seul le module porte racle 31 s'élève. La tête 81 de l'organe d'indexation 77 (Figure 10) descend dans le logement 113 de l'organe complémentaire d'indexation 111 (Figure 13). La butée D' quitte la butée D. La butée C' vient au contact de la butée C. Le module porte racle 31 s'élève de la hauteur H de 30 mm par exemple et passe de la position relative d'usage à la position de relevage différentiel. La tête d'impression 7 passe de la position illustrée sur la Figure 15 à celle illustrée sur la Figure 16.At the beginning of this movement, the screen module 29 being fixed on the frame 27, only the scraper door module 31 rises. The head 81 of the indexing member 77 ( Figure 10 ) goes down into the housing 113 of the complementary indexing member 111 ( Figure 13 ). The abutment D 'leaves the abutment D. The abutment C' comes into contact with the abutment C. The scraper door module 31 rises from the height H by 30 mm for example and moves from the relative position of use to the position differential lift. The print head 7 moves from the position illustrated on the Figure 15 to that illustrated on the Figure 16 .

Le système de fixation 37 libère alors le module porte écran 29 qui reste maintenu par rapport au châssis 27 par la coopération entre l'organe d'indexation 77 et l'organe complémentaire d'indexation 111.The fixing system 37 then releases the screen module 29 which remains held relative to the frame 27 by the cooperation between the indexing member 77 and the complementary indexing member 111.

Le mouvement de dévissage de l'arbre 131 se poursuivant, le module porte écran 29 et le module porte racle 31 montent de concert jusqu'à la position de maintenance de la tête d'impression 7 représentée sur les Figures 3 et 17. On peut alors réaliser une opération de maintenance sur l'écran 65 ou la racle 103, la tête d'impression 7 étant à l'écart du module porte objet 5. En outre, le module porte racle 31 est avantageusement placé automatiquement dans la position de relevage différentiel.The unscrewing movement of the shaft 131 continues, the screen module 29 and the squeegee module 31 mount together to the maintenance position of the print head 7 shown in FIG. Figures 3 and 17 . It is then possible to carry out a maintenance operation on the screen 65 or the doctor blade 103, the print head 7 being away from the object holder module 5. In addition, the doctor blade module 31 is advantageously placed automatically in the position differential lift.

Pour replacer la tête d'impression 7 dans la position d'utilisation, on réalise les opérations inverses de celles décrites ci-dessus.To replace the print head 7 in the position of use, the reverse operations of those described above are carried out.

Le moteur 129 visse l'arbre 131 dans l'écrou à billes 135. La tête d'impression 7 descend par rapport au châssis 27. On bloque le module porte écran 29 dans sa position initiale de la Figure 15. Le module porte racle 31 poursuit sa descente et passe de la position de relevage différentielle à la position relative d'usage, les butées D et D' étant en contact.The motor 129 screws the shaft 131 into the ball nut 135. The print head 7 descends relative to the frame 27. The screen module 29 is locked in its initial position of the Figure 15 . The scraper door module 31 continues its descent and moves from the differential lifting position to the relative position of use, the stops D and D 'being in contact.

De manière alternative, on ne bloque pas le module porte écran 29 dans sa position initiale de la Figure 15, mais dans une autre position. Ceci permet avantageusement de déplacer la tête d'impression 7 de la position d'utilisation représentée sur la Figure 15 à une autre position d'utilisation plus haute ou plus basse par rapport au châssis 27.In an alternative manner, the screen module 29 is not blocked in its initial position of the Figure 15 but in another position. This advantageously makes it possible to move the print head 7 from the use position represented on the Figure 15 at another position of use higher or lower with respect to the frame 27.

Lorsque le dispositif 1 réalise une impression sur l'objet 3, la tête d'impression 7 est, comme décrit ci-dessus, dans la position d'utilisation (Figures 1, 2 et 4).When the device 1 makes an impression on the object 3, the print head 7 is, as described above, in the position of use ( Figures 1 , 2 and 4 ).

Préalablement à l'impression sur l'objet 3, le plateau tournant vient placer le module porte objet 5 sous la tête d'impression 7. Sous la tête d'impression 7, le module porte objet se déplace sensiblement tangentiellement à la direction d'impression Ox.Prior to printing on the object 3, the turntable comes to place the object holder module 5 under the print head 7. Under the print head 7, the object holder module moves substantially tangentially to the direction of printing. Ox printing.

Le galet 27 (Figure 2) s'engage alors dans le chemin de came 59 du chariot mobile 35. Ceci rend le chariot 11 du module porte objet 5 et le chariot 35 solidaires en élévation par rapport au châssis 27. Le chariot 35 est par ailleurs solidaire en élévation de la première partie 125 de l'actionneur 8. Ainsi, la position de la première partie 125 par rapport au châssis 27 détermine l'élévation du module porte objet 5 lorsque les butées B et B' ne sont plus en contact.The roller 27 ( Figure 2 ) then engages in the cam path 59 of the movable carriage 35. This makes the carriage 11 of the object carrier module 5 and the carriage 35 integral in elevation with respect to the frame 27. The carriage 35 is also integral in elevation of the first part 125 of the actuator 8. Thus, the position of the first portion 125 relative to the frame 27 determines the elevation of the object holder module 5 when the abutments B and B 'are no longer in contact.

L'inclinaison du bras 13 et de l'objet 3 autour de l'axe 15 est réglée à l'aide des moyens 17, 19. L'actionneur 25 contrôle la position de l'objet 3 en rotation autour de l'axe 23 durant l'impression.The inclination of the arm 13 and the object 3 around the axis 15 is adjusted using means 17, 19. The actuator 25 controls the position of the object 3 in rotation about the axis 23 during printing.

L'actionneur 8 fonctionne alors dans un second mode de fonctionnement. La seconde partie 127 de l'actionneur prend appui sur le châssis 27 par l'intermédiaire du module porte racle 31 et du module porte écran 29.The actuator 8 then operates in a second operating mode. The second part 127 of the actuator is supported on the frame 27 via the doctor blade module 31 and the screen holder module 29.

Par vissage, respectivement dévissage, de l'arbre 131 dans l'écrou à billes 135, la première partie 125 est relevée, respectivement abaissée, par rapport au châssis 27. Ainsi l'actionneur 8 modifie l'élévation du module porte objet 5 par rapport au châssis 27.By screwing, respectively unscrewing, the shaft 131 into the ball nut 135, the first portion 125 is raised, respectively lowered, relative to the frame 27. Thus the actuator 8 modifies the elevation of the object holder module 5 by compared to the chassis 27.

Le capteur d'effort 137 fournit une information sur la configuration dans laquelle se trouve le dispositif 1. Si l'effort mesuré par le capteur 137 est sensiblement nul, l'actionneur 8 est dans le second mode de fonctionnement, dans lequel il n'y a pas de contact entre les butées B et B'. Si l'effort mesuré par le capteur 137 est sensiblement non nul, par exemple supérieure à une valeur seuil, alors l'actionneur 8 est dans le premier mode de fonctionnement. Si l'effort mesuré par le capteur 137 est sensiblement égal au poids de l'actionneur 8, du chariot 35 et de la tête d'impression, c'est que l'actionneur 8 porte la tête d'impression 7. Il est également possible de détecter les configurations dans lesquelles l'actionneur 8 ne porte que le module porte racle 31. Un effort supérieur au poids de l'actionneur 8, du chariot 35 et de la tête d'impression 7 signale par exemple un blocage du système de fixation 37.The force sensor 137 provides information on the configuration in which the device 1 is located. If the force measured by the sensor 137 is substantially zero, the actuator 8 is in the second mode of operation, in which it there is no contact between the abutments B and B '. If the force measured by the sensor 137 is substantially non-zero, for example greater than a threshold value, then the actuator 8 is in the first mode of operation. If the force measured by the sensor 137 is substantially equal to the weight of the actuator 8, the carriage 35 and the print head, it is that the actuator 8 carries the print head 7. It is also it is possible to detect the configurations in which the actuator 8 bears only the scraper door module 31. A force greater than the weight of the actuator 8, the carriage 35 and the print head 7 signals, for example, a locking of the parking system. fixing 37.

Grâce aux caractéristiques décrites ci-dessus, en particulier le premier mode de fonctionnement et le second mode de fonctionnement de l'actionneur 8, il est possible, avec un même actionneur 8, de déplacer la tête d'impression 7 de la position d'utilisation à la position de maintenance, et de modifier l'élévation du module porte objet 5 par rapport au châssis 27. Ceci simplifie le dispositif d'impression 1 et réduit son coût, tout en lui conservant des fonctionnalités comparables à un dispositif d'impression comportant deux actionneurs.Thanks to the characteristics described above, in particular the first mode of operation and the second mode of operation of the actuator 8, it is possible, with the same actuator 8, to move the print head 7 from the position of use at the maintenance position, and change the elevation of the object holder module 5 relative to the frame 27. This simplifies the printing device 1 and reduces its cost, while retaining features comparable to a printing device having two actuators.

En outre, grâce à la caractéristique optionnelle selon laquelle le système de fixation 37 est réglable en élévation, le dispositif 1 présente l'avantage supplémentaire de posséder une pluralité de positions d'utilisation de la tête d'impression 7, l'actionneur 8 étant apte à déplacer la tête d'impression 7 de l'une à l'autre des positions d'utilisation.In addition, thanks to the optional feature that the fastening system 37 is adjustable in elevation, the device 1 has the additional advantage of have a plurality of positions of use of the print head 7, the actuator 8 being able to move the print head 7 from one to the other of the use positions.

Enfin, grâce à la caractéristique optionnelle selon laquelle le module porte écran 29 comprend l'organe d'indexation 77 et le module porte racle 31 comprend l'organe complémentaire d'indexation 111 coopérant avec l'organe d'indexation 77, l'actionneur 8 est également apte à déplacer le module porte racle 31 de la position d'usage à la position de relevage différentiel.Finally, thanks to the optional feature according to which the screen module 29 comprises the indexing member 77 and the doctor blade module 31 comprises the indexing complementary member 111 cooperating with the indexing member 77, the actuator 8 is also able to move the doctor blade module 31 from the use position to the differential lifting position.

Claims (11)

  1. Device (1) for printing an impression by silk screen printing on at least one object (3), comprising of :
    - a chassis (27),
    - an object holder module (5) that is designed to hold the object (3), the object holder module ( 5) being movable relative to the chassis (27) along a direction of pressing (Oz),
    - a print head (7) including a screen holder module (29) that is designed to hold a screen (65) and a squeegee holder module (31) that is designed to hold a squeegee (squeegee) (103) located facing the screen (65), the print head (7) being movable relative to the chassis (27) between an operating position close to the object holder module (5), and a maintenance position away from the object holder module (5), and
    - an actuator (8) having a first part (125) and a second part (127) that is movable relative to the first part (125), the actuator (8) being adapted, in a first mode of operation, to be supported on the chassis (27) by its first part (125) and capable of moving the print head (7) from the operating position to the maintenance position by a movement of the second part (127),
    characterised in that the actuator (8) is adapted, in a second mode of operation, to be supported on the chassis (27) by the second part (127) and is capable of moving the object holder module (5) along the direction of pressing (Oz) relative to the chassis (27) by a movement of the first part (125).
  2. Device (1) according to claim 1, characterised in that, in the first mode of operation, the first part (125) of the actuator (8) is supported on an end stop (B) of the chassis (27).
  3. Device (1) according to claim 1 or 2, characterised in that it comprises a fastening system (37) designed, selectively, for fastening the screen holder module (29) on to the chassis (27) in a manner such that the print head (7) forms a support for the second part (127) of the actuator (8), and for releasing the screen holder module (29) so as to enable said movement of the print head from the operating position to the maintenance position.
  4. Device (1) according to claim 3, characterised in that the fastening system (37) is adjustable along the direction of pressing (Oz) for selectively fastening the screen holder module (29) on to the chassis (27) in a plurality of positions along the direction of pressing (Oz) defining a plurality of operating positions for use of the print head (7), the actuator (8) being capable, in the first mode of operation, of moving the print head (7) from any one of the operating positions from among said plurality of operating positions to any other operating position from among said plurality of positions when the screen holder module (29) is released relative to the chassis (27).
  5. Device (1) according to claim 3 or 4, characterised in that the fastening system (37) comprises a rack (115) fastened on to one (29) of either the screen holder module (29) and the chassis (27), and a latch (117) fastened on to the other (27) of the screen holder module (29) and the chassis (27), the latch (117) being movable selectively between a closed position wherein the latch (117) engages on to the rack (115) so as to lock in the screen holder module (29) relative to the chassis (27) along the direction of pressing (Oz) and an open position for releasing the screen holder module (29).
  6. Device (1) according to any one of claims 1 to 5, characterised in that :
    - the screen holder module (29) is mounted so as to be movable relative to the squeegee holder module (31) along the direction of pressing (Oz), and
    - the screen holder module (29) comprises an indexing member (77) and the squeegee holder module (31) comprises a complementary indexing member (111), the indexing member (77) of the screen holder module (29) being capable of cooperating with the complementary indexing member (111) in order to define a relative position of use of the squeegee holder module (31) relative to the screen holder module (29) intended to enable contact between the squeegee (103) and the screen (65), and wherein the indexing member (77) forms a bottom end stop (D-D') for the complementary indexing member (111), and a position for differential lifting of the squeegee holder module (31) relative to the screen holder module (29) designed to move the squeegee (103) away from the screen (65), and wherein the complementary indexing member (111) forms a bottom end stop (C -C') for the indexing member (77).
  7. Device (1) according to claim 6, characterised in that the indexing member (77) comprises a base (79), a rod (80) extending along the direction of pressing (Oz), and a head (81) that is wider than the rod (80), and in that the complementary indexing member (111) defines a housing (113) extending along the direction of pressing (Oz) and adapted to receive the head (81), the housing (113) having a narrowed opening around the rod (80) so as to trap the head (81), the head (81) being adapted to abut (C-C') against the opening of the housing (113) and the opening of the housing (113) being adapted to abut (D-D') against the base (79).
  8. Device (1) according to claim 6 or 7, characterised in that the indexing member (77) and the complementary indexing member (111) are suitably dimensioned such that in the position of differential lifting, in relation to the relative position of use, the squeegee holder module (31) is positioned at a distance from the screen holder module (29) at a height (H) of between 15 mm and 60 mm, preferably equal to about 30 mm.
  9. Device (1) according to any one of claims 1 to 8, characterised in that the actuator (8) comprises a threaded shaft (131), a ball nut (135) mounted so as to be movable only in translational motion on the shaft (131), and a motor (129) for driving the shaft (131) in axial rotation.
  10. Device (1) according to claim 9, characterised in that the ball nut (135) is located in the first part (125) of the actuator (8) and the motor (129) is located in the second part (127).
  11. Device (1) according to any one of claims 1 to 10, characterised in that it comprises a pressure sensor (137) adapted to be compressed (B-B') between the chassis (27) and the first part (125) of the actuator (8) in order to measure the forces transmitted to the chassis (27) by the first part (125) of the actuator (8).
EP13187545.2A 2012-10-19 2013-10-07 Screen-printing device with one main actuator Not-in-force EP2722178B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13187545T PL2722178T3 (en) 2012-10-19 2013-10-07 Screen-printing device with one main actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1260006A FR2997037B1 (en) 2012-10-19 2012-10-19 SERIGRAPHIC PRINTING DEVICE WITH MAIN ACTUATOR

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EP2722178A1 EP2722178A1 (en) 2014-04-23
EP2722178B1 true EP2722178B1 (en) 2014-12-24

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US (1) US9032873B2 (en)
EP (1) EP2722178B1 (en)
ES (1) ES2532251T3 (en)
FR (1) FR2997037B1 (en)
PL (1) PL2722178T3 (en)

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CN110641138A (en) * 2019-10-31 2020-01-03 长沙建宇网印机电设备有限公司 Printing stock supporting platform of curved surface printing

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CN104816537A (en) * 2015-05-27 2015-08-05 宋其斌 Screen frame printing double scraping and printing device
CN111347760A (en) * 2016-08-10 2020-06-30 东莞市凯格精机股份有限公司 Pneumatic device of printing equipment
CN111559159B (en) * 2020-05-19 2022-06-07 邓艳梅 Portable sack screen printing device

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US5694843A (en) * 1996-06-12 1997-12-09 Chen; Tung-Chin PC(printed circuit) board printing machine with cantilever-supported printing head and stencil holders and bi-directionally movable printing table
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US6138560A (en) 1999-04-30 2000-10-31 Chen; Tung-Chin Slide mechanism and a driving mechanism thereof for a cantilever type screen-printing machine
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CN110641138A (en) * 2019-10-31 2020-01-03 长沙建宇网印机电设备有限公司 Printing stock supporting platform of curved surface printing
CN110641138B (en) * 2019-10-31 2021-05-18 长沙建宇网印机电设备有限公司 Printing stock supporting platform of curved surface printing

Also Published As

Publication number Publication date
EP2722178A1 (en) 2014-04-23
FR2997037A1 (en) 2014-04-25
PL2722178T3 (en) 2015-05-29
ES2532251T3 (en) 2015-03-25
FR2997037B1 (en) 2015-01-16
US20140109781A1 (en) 2014-04-24
US9032873B2 (en) 2015-05-19

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