EP1737657B1 - Placement and removal device of a doctor blade in a screen printing impression cylinder - Google Patents

Placement and removal device of a doctor blade in a screen printing impression cylinder Download PDF

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Publication number
EP1737657B1
EP1737657B1 EP05731151A EP05731151A EP1737657B1 EP 1737657 B1 EP1737657 B1 EP 1737657B1 EP 05731151 A EP05731151 A EP 05731151A EP 05731151 A EP05731151 A EP 05731151A EP 1737657 B1 EP1737657 B1 EP 1737657B1
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EP
European Patent Office
Prior art keywords
slider
cylinder
slide
axis
track
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Not-in-force
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EP05731151A
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German (de)
French (fr)
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EP1737657A1 (en
Inventor
Günther Hoier
Matthias Gygi
Eric Wagner
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KBA Notasys SA
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KBA Giori SA
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Priority to EP05731151A priority Critical patent/EP1737657B1/en
Publication of EP1737657A1 publication Critical patent/EP1737657A1/en
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Publication of EP1737657B1 publication Critical patent/EP1737657B1/en
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    • 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

  • the present invention relates to a device for placing and removing a squeegee in a screen printing cylinder mounted on a printing machine comprising a support fixed on the frame of the machine in the extension of said cylinder, a mounted slide on said support and arranged to allow a slider to move only parallel to the axis of the cylinder between a first limit position located outside said cylinder and a second limit position located within said cylinder in front of the position working the squeegee
  • one or more hollow cylinders are used whose lateral surface is made of a natural or synthetic fiber fabric.
  • a varnish is used to seal the mesh of the canvas that is not part of the image to be printed.
  • the inside of the cylinder is fed with a printing ink and a scraper in contact with the inner surface of the fabric pushes this ink through the free mesh of the fabric.
  • a first person stands at one end of the cylinder and introduces the doctor blade into the cylinder body.
  • a second person stands at the other end of the cylinder and grabs the free end of the squeegee and with a combined action both people position the squeegee in its bearings.
  • two people do the opposite work. Therefore, both for the establishment and withdrawal of the doctor blade two people are needed.
  • a rail is integral with the doctor blade.
  • the rail is engaged in a slide located at one end of the cylinder.
  • the rail-doctor assembly is moved parallel to the axis of the cylinder until it reaches a second slide located at the other end of the cylinder.
  • the rail-doctor assembly is placed by vertical displacement on two pivoting bearings about a vertical axis or movable vertically.
  • the bearings are constituted by the two slides which move vertically for the setting in working position of the doctor blade.
  • the EP-A-0 463 699 also offers a solution for the installation and removal of particularly long squeegees.
  • a mechanism with toothed wheels, belts and cranks allows the establishment and removal of an assembly comprising the doctor blade, a movable carriage and a guide.
  • the fixing means (bearings) of the doctor blade are pivotally mounted around the doctor blade. The doctor blade rotates about its axis to position the angled inlet of the feed pipe of the doctor blade.
  • the present invention aims to provide a device for setting up and removing a doctor blade that is simple, manipulable by a single person while the bearings of the doctor blade are fixed.
  • the device according to the invention is characterized in that said slider is provided with assembly and disassembly means cooperating with conjugate means on the doctor blade to allow the doctor blade to be fixed on the slider or to withdraw the doctor blade from the slider in said first and second limit positions, and in that said slide is pivotally mounted on said support about an axis parallel to the axis of said cylinder so that, in said second limit position of the slide, the doctor blade can be placed in the working position respectively withdrawn from the working position by tilting of the slide assembly and slider around the axis.
  • the advantage of this device is the fact that only one person can set up the squeegee and remove it without the risk of damaging the canvas of the screen printing cylinder and without becoming soiled.
  • the device is simple and easy to put on site. Sizing and accurate positioning are necessary, but within the reach of the skilled person, so that the doctor blade is positioned in front of its working position and pivoting the slide and the slide is deposited on its bearings or removed. The positions of the squeegee bearings are fixed during these operations, no additional control or adjustment is necessary to ensure accurate positioning of the bearings.
  • slide consisting of four pairs of rollers, the pebbles of each pair being superimposed and leaving enough space for the passage corresponding slider that is prisoner of this slide except for its displacement parallel to the axis of the cylinder. It is also possible to use a slide with rollers or ball bearings or even a slide without such elements but with greasy friction. Alternatively, the slide may be provided with means such as rollers, rollers or ball bearings while the slide may also be provided or not. The skilled person will choose according to the desired result and of course the dimensions and weight of the doctor blade and the slide.
  • the figure 1 is a partial schematic perspective view of the device according to the invention.
  • the figure 2 is a partial schematic perspective view of the device with the doctor blade before its introduction into the cylinder.
  • the figure 3 is a schematic perspective view of the slide with its support.
  • a support 2 is fixed in the extension of the cylinder.
  • a pivoting slide 3 around a hinge 4.
  • the slide comprises four pairs of rollers 5, 6, 7, 8, the rollers of each pair being superposed and spaced to allow a passage to the corresponding part of a slide 9 that will come between them. So, the slide 9 will be free only to move parallel to the axis of the cylinder.
  • the slider 9 consists of a profile bar T.
  • the wings of the head of this profile engage in the spaces between the rollers of each pair 5 to 8 and the section 9 is held and guided by these rollers.
  • On the foot of the profile two plates 11, 12 are fixed with a lug 10, 13 ( figure 2 ). These lugs collaborate with two notches 14, 15 in the form of a bayonet notch, located on the back of the blade 21 to ensure rapid assembly of the doctor blade 21 and the slide 9.
  • Other similar means can be used to ensure the rapid assembly and disassembly of these two elements.
  • the distal end of the slide 9 relative to the cylinder is provided with two rods 16, 17 for gripping to manipulate the slide 9.
  • rods 16, 17 are perpendicular to the axis of the slide 9 and in this case form an angle of 180 °. They could also form an angle less than 180 °. Depending on the weight and dimensions of the slide assembly, scrape and slide a single rod may suffice.
  • an adjustable or non-adjustable end stop 19 ( figure 1 ) makes it possible to ensure the maximum permitted displacement of the slider towards the inside of the cylinder.
  • a second stop (not shown) can be provided at the other end of the slider to prevent the slider 9 ( figure 2 ) accidentally leaves the slide 3 in the limit position for placing or removing the doctor blade 21 on the slide 9.
  • the slider may be provided with two or more additional rollers 22.
  • the support 2 with the slide 3 is fixed in the extension of the cylinder in the vicinity of one of the bearings (generally designated by the reference 20) intended to receive the doctor blade 21, but may also be fixed on the diametrically opposite point or a other, the essential being to ensure proper positioning of the doctor blade 21 relative to the bearings 20 during the introduction or withdrawal of the doctor blade 21.
  • the installation of the doctor blade 21 is as follows.
  • the slide 9 is pulled out of the frame 1, its end being engaged and held in the slide 3 ( figure 2 ).
  • the squeegee 21 is mounted on the slide by engaging the lugs 10, 13 in the notches 14, 15.
  • the slide 9 is pushed inside the cylinder until the stop of the end of race 19, bringing the squeegee 21 to its working position.
  • slider 9 and doctor blade 21 are pivoted around the articulation 4 until the doctor blade is housed by its ends in the bearings provided on the frame. 1. Both ends of the doctor blade 21 are provided with two supports 23 having a specific shape and dimensions.
  • Each bearing 20 comprises in particular a housing 20a (partially visible in the figure 1 ) whose shape and dimensions substantially correspond to the shape and dimensions of the supports 23 of the doctor blade 21.
  • the two bearings 20 are fixed on the frame 1 and do not move during the implementation operations or removal of the doctor blade.
  • the pins are disengaged by continuing the pivoting and by pulling a few centimeters outwards the slide 9, the slide assembly 3, slide 9 is pivoted in the opposite direction and the slide 9 is pulled outwards.
  • a second support with an articulated slide identical to the elements already described are fixed at the other end of the frame of the machine.
  • the end of the slide before the end of its stroke engages in the second slide ensuring a stable tenuous assembly of the slide assembly and scrapes for the introduction or removal of the doctor blade.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Rotary Presses (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

The device has a support (2) fixed on a frame (1) of a printing machine in the extension of a screen printing cylinder on which a slide (3) is mounted. The slide is arranged for moving a slider block (9) provided with pins that cooperate with notches on a doctor blade for permitting to rapidly fix or remove the blade in the block. The block permits to mount or remove the blade when in a limit position situated outside the cylinder. The slide (3) is tilted for placing the doctor blade in work position and for retrieving the blade from the work position, when the slider block is in a limit position situated inside the screen printing cylinder.

Description

La présente invention concerne dispositif de mise en place et de retrait d'une racle dans un cylindre d'impression en sérigraphie monté sur une machine d'impression comprenant un support fixé sur le bâti de la machine dans le prolongement dudit cylindre, une coulisse montée sur ledit support et agencée pour permettre à un coulisseau de se déplacer uniquement parallèlement à l'axe du cylindre entre une première position limite située à l'extérieur dudit cylindre et une seconde position limite située à l'intérieur dudit cylindre en face de la position de travail de la racleThe present invention relates to a device for placing and removing a squeegee in a screen printing cylinder mounted on a printing machine comprising a support fixed on the frame of the machine in the extension of said cylinder, a mounted slide on said support and arranged to allow a slider to move only parallel to the axis of the cylinder between a first limit position located outside said cylinder and a second limit position located within said cylinder in front of the position working the squeegee

Lors de l'impression en sérigraphie avec une machine d'impression, par exemple pour l'impression des billets de banque utilisant ce procédé, on utilise un ou plusieurs cylindres creux dont la surface latérale est constituée d'une toile en fibres naturelles ou synthétiques. Un vernis est utilisé pour boucher les mailles de la toile qui ne font pas partie de l'image à imprimer. L'intérieur du cylindre est alimenté avec une encre d'impression et une racle en contact avec la surface intérieure de la toile pousse cette encre à travers les mailles libres de la toile. Habituellement, lorsque le cylindre de sérigraphie est mis en place sur la machine, une première personne se tient à une des extrémités du cylindre et introduit la racle dans le corps du cylindre. Une seconde personne se tient à l'autre extrémité du cylindre et attrape l'extrémité libre de la racle et avec une action conjuguée les deux personnes positionnent la racle dans ses paliers. Pour retirer la racle, deux personnes font le travail inverse. Par conséquent, aussi bien pour la mise en place que le retrait de la racle deux personnes sont nécessaires. En plus il y a un risque que la racle touche lors de ces manipulations la toile et la détruise. Lors du retrait la personne qui tire la racle de son côté est obligée de la prendre à un point intermédiaire et automatiquement elle est souillée par l'encre.When screen printing with a printing machine, for example for the printing of banknotes using this method, one or more hollow cylinders are used whose lateral surface is made of a natural or synthetic fiber fabric. . A varnish is used to seal the mesh of the canvas that is not part of the image to be printed. The inside of the cylinder is fed with a printing ink and a scraper in contact with the inner surface of the fabric pushes this ink through the free mesh of the fabric. Usually, when the screen printing cylinder is set up on the machine, a first person stands at one end of the cylinder and introduces the doctor blade into the cylinder body. A second person stands at the other end of the cylinder and grabs the free end of the squeegee and with a combined action both people position the squeegee in its bearings. To remove the squeegee, two people do the opposite work. Therefore, both for the establishment and withdrawal of the doctor blade two people are needed. In addition there is a risk that the squeegee touches during these manipulations the canvas and destroy it. When removing the person who pulls the squeegee is obliged to take it at an intermediate point and automatically it is soiled by the ink.

Le US 5,592,313 propose deux solutions pour éviter ces manipulations. Selon une première solution, un rail est solidaire de la racle. Le rail est engagé dans une coulisse située à une extrémité du cylindre. On déplace parallèlement à l'axe du cylindre l'ensemble rail-racle jusqu à ce qu'il atteigne une seconde coulisse située à l'autre extrémité du cylindre. Par la suite l'ensemble rail-racle est posé par déplacement vertical sur deux paliers pivotants autour d'un axe vertical ou déplaçables verticalement. Selon la seconde solution, les paliers sont constitués par les deux coulisses qui se déplacent verticalement pour la mise en position de travail de la racle.The US5,592,313 proposes two solutions to avoid these manipulations. According to a first solution, a rail is integral with the doctor blade. The rail is engaged in a slide located at one end of the cylinder. The rail-doctor assembly is moved parallel to the axis of the cylinder until it reaches a second slide located at the other end of the cylinder. Subsequently the rail-doctor assembly is placed by vertical displacement on two pivoting bearings about a vertical axis or movable vertically. According to the second solution, the bearings are constituted by the two slides which move vertically for the setting in working position of the doctor blade.

Le EP-A- 0 463 699 propose aussi une solution pour la mise en place et retrait des racles particulièrement longues. Un mécanisme a roues dentées, courroies et manivelles permet la mise en place et retrait d'un ensemble comprenant la racle, un chariot mobile et un guide. Les moyens de fixation (paliers) de la racle sont montés pivotants autour de la racle. La racle tourne autour de son axe pour positionner l'entrée coudée du conduit d'alimentation de la racle.The EP-A-0 463 699 also offers a solution for the installation and removal of particularly long squeegees. A mechanism with toothed wheels, belts and cranks allows the establishment and removal of an assembly comprising the doctor blade, a movable carriage and a guide. The fixing means (bearings) of the doctor blade are pivotally mounted around the doctor blade. The doctor blade rotates about its axis to position the angled inlet of the feed pipe of the doctor blade.

La présente invention a pour but de proposer un dispositif de mise en place et retrait d'une racle qui est simple, manipulable par une seule personne tandis que les paliers de la racle sont fixes.The present invention aims to provide a device for setting up and removing a doctor blade that is simple, manipulable by a single person while the bearings of the doctor blade are fixed.

Le dispositif selon l'invention est caractérisé par le fait que ledit coulisseau est muni de moyens d'assemblage et désassemblage coopérant avec des moyens conjugués sur la racle pour permettre de fixer la racle sur le coulisseau ou retirer la racle du coulisseau dans lesdites première et seconde positions limites, et par le fait que ladite coulisse est montée pivotante sur ledit support autour d'un axe parallèle à l'axe dudit cylindre de sorte que, dans ladite seconde position limite du coulisseau, la racle peut être mise en position de travail respectivement retirée de la position de travail par basculement de l'ensemble coulisse et coulisseau autour de l'axe.The device according to the invention is characterized in that said slider is provided with assembly and disassembly means cooperating with conjugate means on the doctor blade to allow the doctor blade to be fixed on the slider or to withdraw the doctor blade from the slider in said first and second limit positions, and in that said slide is pivotally mounted on said support about an axis parallel to the axis of said cylinder so that, in said second limit position of the slide, the doctor blade can be placed in the working position respectively withdrawn from the working position by tilting of the slide assembly and slider around the axis.

L'avantage de ce dispositif est le fait qu'une seule personne peut mettre en place la racle et la retirer sans risquer d'endommager la toile du cylindre d'impression en sérigraphie et sans se souiller.The advantage of this device is the fact that only one person can set up the squeegee and remove it without the risk of damaging the canvas of the screen printing cylinder and without becoming soiled.

Le dispositif est simple et facile à mettre sur place. Les dimensionnement et positionnement précis sont nécessaires, mais à la portée de l'homme du métier, pour que la racle soit positionnée face à sa position de travail et en pivotant la coulisse et le coulisseau on la dépose sur ses paliers ou on la retire. La position des paliers de la racle sont fixes pendant ces opérations, aucun contrôle ou réglage supplémentaire n'est nécessaire pour s'assurer du positionnement précis des paliers.The device is simple and easy to put on site. Sizing and accurate positioning are necessary, but within the reach of the skilled person, so that the doctor blade is positioned in front of its working position and pivoting the slide and the slide is deposited on its bearings or removed. The positions of the squeegee bearings are fixed during these operations, no additional control or adjustment is necessary to ensure accurate positioning of the bearings.

Dans les revendications dépendantes des caractéristiques techniques de différents éléments du dispositif sont revendiquées.In the dependent claims the technical characteristics of different elements of the device are claimed.

Ainsi, on choisit une coulisse constituée de quatre paires de galets, les galets de chaque paire étant superposés et laissant un espace suffisant pour le passage correspondant du coulisseau qui est prisonnier de cette coulisse sauf concernant son déplacement parallèlement à l'axe du cylindre. On peut aussi utiliser une coulisse avec des rouleaux ou roulements à billes voire une coulisse sans de tels éléments mais à frottement gras. Alternativement, le coulisseau peut être muni de moyens tels que galets, rouleaux ou roulements à billes tandis que la coulisse peut en être aussi munie ou pas. L'homme du métier choisira en fonction du résultat souhaité et bien sûr des dimensions et poids de la racle et du coulisseau.Thus, we choose a slide consisting of four pairs of rollers, the pebbles of each pair being superimposed and leaving enough space for the passage corresponding slider that is prisoner of this slide except for its displacement parallel to the axis of the cylinder. It is also possible to use a slide with rollers or ball bearings or even a slide without such elements but with greasy friction. Alternatively, the slide may be provided with means such as rollers, rollers or ball bearings while the slide may also be provided or not. The skilled person will choose according to the desired result and of course the dimensions and weight of the doctor blade and the slide.

L'invention sera décrite à l'aide du dessin annexéThe invention will be described with the aid of the attached drawing

La figure 1 est une vue schématique partielle en perspective du dispositif selon l'invention.The figure 1 is a partial schematic perspective view of the device according to the invention.

La figure 2 est une vue schématique partielle en perspective du dispositif avec la racle avant sa mise en place dans le cylindre.The figure 2 is a partial schematic perspective view of the device with the doctor blade before its introduction into the cylinder.

La figure 3 est une vue schématique en perspective de la coulisse avec son support.The figure 3 is a schematic perspective view of the slide with its support.

Sur le bâti 1 d'une machine (représenté schématiquement et sans le cylindre d'impression en sérigraphie) un support 2 est fixé dans le prolongement du cylindre. Sur ce support est montée une coulisse 3 pivotante autour d'une articulation 4. La coulisse comprend quatre paires de galets 5, 6, 7, 8 les galets de chaque paire étant superposés et espacés pour laisser un passage à la partie correspondante d'un coulisseau 9 qui viendra entre eux. Ainsi, le coulisseau 9 ne sera libre que pour se déplacer parallèlement à l'axe du cylindre.On the frame 1 of a machine (shown schematically and without the screen printing cylinder) a support 2 is fixed in the extension of the cylinder. On this support is mounted a pivoting slide 3 around a hinge 4. The slide comprises four pairs of rollers 5, 6, 7, 8, the rollers of each pair being superposed and spaced to allow a passage to the corresponding part of a slide 9 that will come between them. So, the slide 9 will be free only to move parallel to the axis of the cylinder.

Le coulisseau 9 est constitué d'une barre profilée en T. Les ailes de la tête de ce profilé s'engagent dans les espaces entre les galets de chaque paire 5 à 8 et le profilé 9 est tenu et guidé par ces galets. Sur le pied du profilé deux plaquettes 11, 12 sont fixées avec un ergot 10, 13 (figure 2). Ces ergots collaborent avec deux encoches 14, 15 en forme d'encoche à baïonnette, situées sur le dos de la racle 21 pour assurer un assemblage rapide de la racle 21 et du coulisseau 9. D'autres moyens similaires peuvent être utilisés pour assurer l'assemblage et désassemblage rapide de ces deux éléments. L'extrémité distale du coulisseau 9 par rapport au cylindre, est munie de deux tiges 16, 17 de préhension pour manipuler le coulisseau 9. Ces tiges 16, 17 sont perpendiculaires à l'axe du coulisseau 9 et dans le cas précis forment un angle de 180°. Elles pourraient aussi former un angle inférieur à 180°. En fonction du poids et dimensions de l'ensemble coulisseau, racle et coulisse une seule tige peut suffire. Sur le coulisseau 9 une butée de fin de course réglable ou non réglable 19 (figure 1) permet d'assurer le déplacement maximum autorisé du coulisseau vers l'intérieur du cylindre. Une seconde butée non représentée peut être prévue à l'autre extrémité du coulisseau pour empêcher que le coulisseau 9 (figure 2) quitte accidentellement la coulisse 3 dans la position limite de mise en place ou de retrait de la racle 21 sur le coulisseau 9.The slider 9 consists of a profile bar T. The wings of the head of this profile engage in the spaces between the rollers of each pair 5 to 8 and the section 9 is held and guided by these rollers. On the foot of the profile two plates 11, 12 are fixed with a lug 10, 13 ( figure 2 ). These lugs collaborate with two notches 14, 15 in the form of a bayonet notch, located on the back of the blade 21 to ensure rapid assembly of the doctor blade 21 and the slide 9. Other similar means can be used to ensure the rapid assembly and disassembly of these two elements. The distal end of the slide 9 relative to the cylinder, is provided with two rods 16, 17 for gripping to manipulate the slide 9. These rods 16, 17 are perpendicular to the axis of the slide 9 and in this case form an angle of 180 °. They could also form an angle less than 180 °. Depending on the weight and dimensions of the slide assembly, scrape and slide a single rod may suffice. On the slide 9 an adjustable or non-adjustable end stop 19 ( figure 1 ) makes it possible to ensure the maximum permitted displacement of the slider towards the inside of the cylinder. A second stop (not shown) can be provided at the other end of the slider to prevent the slider 9 ( figure 2 ) accidentally leaves the slide 3 in the limit position for placing or removing the doctor blade 21 on the slide 9.

Afin d'assurer aussi un guidage latéral du coulisseau 9 la coulisse peut être munie de deux ou plus galets supplémentaires 22.In order also to ensure lateral guidance of the slider 9, the slider may be provided with two or more additional rollers 22.

Comme illustré dans la figure 1, le support 2 avec la coulisse 3 est fixé dans le prolongement du cylindre au voisinage de l'un des paliers (désigné globalement par la référence 20) destiné à recevoir la racle 21, mais peut être aussi fixé sur le point diamétralement opposé ou un autre, l'essentiel étant de pouvoir assurer un positionnement adéquat de la racle 21 par rapport aux paliers 20 lors de la mise en place ou du retrait de la racle 21.As illustrated in figure 1 , the support 2 with the slide 3 is fixed in the extension of the cylinder in the vicinity of one of the bearings (generally designated by the reference 20) intended to receive the doctor blade 21, but may also be fixed on the diametrically opposite point or a other, the essential being to ensure proper positioning of the doctor blade 21 relative to the bearings 20 during the introduction or withdrawal of the doctor blade 21.

La mise en place de la racle 21 se fait de la manière suivante. Le coulisseau 9 est tiré vers l'extérieur du bâti 1 son extrémité étant engagée et tenue dans la coulisse 3 (figure 2). On monte la racle 21 sur le coulisseau en engageant les ergots 10, 13 dans les encoches 14, 15. Ensuite, en saisissant les tiges 16, 17 on pousse le coulisseau 9 à l'intérieur du cylindre jusqu'à la butée de fin de course 19, ramenant la racle 21 face à sa position de travail. A l'aide de deux tiges 16, 17 on fait pivoter l'ensemble coulisse 3, coulisseau 9 et racle 21 autour de l'articulation 4 jusqu'à ce que la racle vienne se loger par ses extrémités dans les paliers prévus sur le bâti 1. Les deux extrémités de la racle 21 sont munies de deux supports 23 ayant une forme et des dimensions spécifiques. Ces supports 23 sont munis de moyens de fixation adéquats (non représentés) permettant à l'opérateur de verrouiller la racle 21 par ses supports 23 dans les paliers 20. Les paliers 20 ont une forme et dimensions conjuguées permettant un positionnement correct et précis de la racle. Chaque palier 20 comporte en particulier un logement 20a (visible partiellement dans la figure 1) dont la forme et les dimensions correspondent essentiellement aux forme et dimensions des supports 23 de la racle 21. Les deux paliers 20 sont fixés sur le bâti 1 et ne bougent pas lors des opérations de mise en place ou retrait de la racle. On désengage les ergots en continuant le pivotement et en tirant de quelques centimètres vers l'extérieur le coulisseau 9, on pivote dans le sens contraire l'ensemble coulisse 3, coulisseau 9 et on tire vers l'extérieur le coulisseau 9. Pendant le travail d'impression on retire complètement le coulisseau 9 de la coulisse 3, la racle 21 étant maintenue dans ses paliers 20 au moyen des supports 23. Pour retirer la racle 21 on effectue pratiquement le travail inverse. Après avoir déverrouillé les supports 23 des paliers 20, on pousse le coulisseau 9 jusqu'à la butée 19 on pivote l'ensemble coulisse 3 et coulisseau on engage les ergots 10, 13 dans les encoches 14, 15 on pivote dans l'autre sens et on tire vers l'extérieur le coulisseau avec la racle 21. Le temps nécessaire pour la mise en place de la racle sur le coulisseau et sa mise en place dans les paliers et le retrait du coulisseau quelques secondes suffisent à une seule personne. Pour l'opération inverse aussi,The installation of the doctor blade 21 is as follows. The slide 9 is pulled out of the frame 1, its end being engaged and held in the slide 3 ( figure 2 ). The squeegee 21 is mounted on the slide by engaging the lugs 10, 13 in the notches 14, 15. Then, by grasping the rods 16, 17, the slide 9 is pushed inside the cylinder until the stop of the end of race 19, bringing the squeegee 21 to its working position. With the aid of two rods 16, 17, the slide assembly 3, slider 9 and doctor blade 21 are pivoted around the articulation 4 until the doctor blade is housed by its ends in the bearings provided on the frame. 1. Both ends of the doctor blade 21 are provided with two supports 23 having a specific shape and dimensions. These supports 23 are provided with adequate fastening means (not shown) allowing the operator to lock the blade 21 by its supports 23 in the bearings 20. The bearings 20 have a shape and conjugate dimensions allowing a correct and precise positioning of the squeegee. Each bearing 20 comprises in particular a housing 20a (partially visible in the figure 1 ) whose shape and dimensions substantially correspond to the shape and dimensions of the supports 23 of the doctor blade 21. The two bearings 20 are fixed on the frame 1 and do not move during the implementation operations or removal of the doctor blade. The pins are disengaged by continuing the pivoting and by pulling a few centimeters outwards the slide 9, the slide assembly 3, slide 9 is pivoted in the opposite direction and the slide 9 is pulled outwards. During the printing work the slide 9 is completely withdrawn from the slide 3, the doctor blade 21 being held in its bearings 20 by means of the supports 23. To remove the doctor blade 21 is practically the opposite work. After having unlocked the supports 23 of the bearings 20, the slide 9 is pushed to the stop 19, the slide assembly 3 is pivoted, and the pins 10, 13 are engaged in the notches 14, 15 and pivoted in the opposite direction and pulling out the slide with the doctor blade 21. The time required for placing the doctor blade on the slide and its implementation in the bearings and removal of the slide a few seconds are enough for one person. For the reverse operation too,

Comme mentionné précédemment aussi bien la coulisse 3, que le coulisseau 9 et les moyens d'assemblage rapide peuvent être modifiés sans sortir du cadre de l'invention.As mentioned above, both the slide 3, the slide 9 and the rapid assembly means can be modified without departing from the scope of the invention.

Selon une variante préférée de l'invention et pour assurer un positionnement précis de la racle, un second support avec une coulisse articulée identique aux éléments déjà décrits, sont fixés à l'autre extrémité du bâti de la machine. Ainsi, l'extrémité du coulisseau avant la fin de sa course s'engage dans la seconde coulisse assurant une ténue stable de l'ensemble coulisseau et racle pour la mise en place ou le retrait de la racle.According to a preferred variant of the invention and to ensure precise positioning of the doctor blade, a second support with an articulated slide identical to the elements already described, are fixed at the other end of the frame of the machine. Thus, the end of the slide before the end of its stroke engages in the second slide ensuring a stable tenuous assembly of the slide assembly and scrapes for the introduction or removal of the doctor blade.

Claims (10)

  1. A device for placing and removing a doctor blade (21) in a screen printing cylinder mounted on a printing machine comprising a support (2) mounted on the frame (1) of the machine in the continuation of said cylinder, and a track (3) mounted on said support (2) and designed to allow a slider (9) to move parallel only to the axis of a cylinder between a first limit position situated outside of said cylinder and a second limit position situated inside said cylinder facing the working position of the doctor blade, which device is characterized in that said slider (9) is provided with assembly and disassembly means (10, 13) engaging with mating means (14, 15) on the blade (21) in order to make it possible to mount the blade (21) on the slider (9) or to remove the blade (21) from the slider (9) in said first and second limit positions, and in that said track (3) pivots on said support (2) about an axis parallel to the axis of said cylinder in such a way that, in said second limit position of the slider (9), the blade (21) can be placed in the working position or withdrawn from the working position by pivoting the track (3) and slider (9) together about the axis.
  2. The device as claimed in claim 1, characterized in that said slider (9) is provided with handle means (16, 17) for moving it parallel to the axis of said cylinder and for pivoting the track (3) and slider (9) together.
  3. The device as claimed in either of claims 1 and 2, characterized in that the track (3) comprises a body provided with rollers (5, 6, 7, 8, 22) for guiding said slider (9).
  4. The device as claimed in claim 3, characterized in that the track (3) comprises four pairs of rollers (5, 6, 7, 8) located at four points of said body, on either side of said slider (9), the rollers of each pair being superposed, and a space being provided between them to allow a corresponding part of the slider (9) to pass between them.
  5. The device as claimed in claim 3 or 4, characterized in that the track (3) is provided with at least two rollers (22) arranged on either side of said slider (9) for the lateral guidance of the slider (9).
  6. The device as claimed in one of claims 3 to 5, characterized in that the slider (9) is a T-section bar comprising a leg and a head with two arms, the means of assembly and disassembly (10, 13) being mounted on the leg of the T-section bar and the two arms of the head of the T-section bar being held between the superposed rollers of each pair (5, 6, 7, 8) of the track (3).
  7. The device as claimed in claim 2, characterized in that the handle means of the slider (9) consist of at least one rod (16, 17) perpendicular to the axis of the slider (9) and situated at the end of the slider (9) remote from said cylinder.
  8. The device as claimed in either of claims 2 and 7, characterized in that the handle means of the slider consist of two rods perpendicular to the axis of the slider and situated at the end of the slider (9) remote from said cylinder, the rods forming an angle of between 60° and 180°.
  9. The device as claimed in one of claims 1-8, characterized in that the slider is provided with stop means (19) for its position at the two limit positions.
  10. The device as claimed in one of claims 1-9, characterized in that it comprises a second support mounted on the other end of the machine frame in the continuation of said cylinder on which a second track pivots about an axis parallel to the axis of said cylinder.
EP05731151A 2004-04-22 2005-04-19 Placement and removal device of a doctor blade in a screen printing impression cylinder Not-in-force EP1737657B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05731151A EP1737657B1 (en) 2004-04-22 2005-04-19 Placement and removal device of a doctor blade in a screen printing impression cylinder

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04009515A EP1588850A1 (en) 2004-04-22 2004-04-22 Device for mounting and dismounting a doctor blade in a rotary screen printing cylinder
EP05731151A EP1737657B1 (en) 2004-04-22 2005-04-19 Placement and removal device of a doctor blade in a screen printing impression cylinder
PCT/IB2005/001115 WO2005102699A1 (en) 2004-04-22 2005-04-19 Placement and removal device of a doctor blade in a screen printing impression cylinder

Publications (2)

Publication Number Publication Date
EP1737657A1 EP1737657A1 (en) 2007-01-03
EP1737657B1 true EP1737657B1 (en) 2008-04-02

Family

ID=34924688

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04009515A Withdrawn EP1588850A1 (en) 2004-04-22 2004-04-22 Device for mounting and dismounting a doctor blade in a rotary screen printing cylinder
EP05731151A Not-in-force EP1737657B1 (en) 2004-04-22 2005-04-19 Placement and removal device of a doctor blade in a screen printing impression cylinder

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04009515A Withdrawn EP1588850A1 (en) 2004-04-22 2004-04-22 Device for mounting and dismounting a doctor blade in a rotary screen printing cylinder

Country Status (6)

Country Link
US (1) US7677170B2 (en)
EP (2) EP1588850A1 (en)
JP (1) JP4603038B2 (en)
AT (1) ATE391016T1 (en)
DE (1) DE602005005805T2 (en)
WO (1) WO2005102699A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1961559A1 (en) 2007-02-20 2008-08-27 Kba-Giori S.A. Cylinder body for orienting magnetic flakes contained in an ink or varnish vehicle applied on a sheet-like or web-like substrate
EP1990208A1 (en) 2007-05-10 2008-11-12 Kba-Giori S.A. Device and method for magnetically transferring indica to a coating composition applied to a substrate
EP2025515A1 (en) * 2007-08-16 2009-02-18 Kba-Giori S.A. Screen printing press
ES2540864T3 (en) 2010-09-24 2015-07-14 Kba-Notasys Sa System and method for orienting magnetic flakes or lamellae contained in an ink or varnish vehicle applied on a sheet-shaped or band-shaped substrate
JP6384994B2 (en) * 2014-09-05 2018-09-05 株式会社小森コーポレーション Rotary screen device
IT201600112960A1 (en) * 2016-11-09 2018-05-09 Oradoc S R L DEVICE FOR RELATIVE HANDLING OF THE BLADES COMPARED TO THE BLADE HOLDER AND MACHINE INCLUDING SUCH DEVICE

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6078748A (en) * 1983-10-05 1985-05-04 Rainke Internatl:Kk Printer with metal screen
NL9001411A (en) * 1990-06-20 1992-01-16 B & S Maschf Bv DEVICE FOR CHANGING A SQUEEGEE.
NL9101165A (en) * 1991-07-04 1993-02-01 Stork Brabant Bv TEMPLATE DRIVE FOR A SCREEN PRINTING MACHINE.
JPH08506909A (en) 1992-11-27 1996-07-23 ボクセル Method and apparatus for forming a hologram
NL9300338A (en) * 1993-02-24 1994-09-16 Stork Brabant Bv Device for suspending a doctor blade in a cylindrical screen of a rotary screen printing machine.
DE29517099U1 (en) * 1995-10-17 1997-02-27 Zimmer, Johannes, Klagenfurt Application device
NL1005308C2 (en) * 1997-02-18 1998-08-20 Stork Brabant Bv Squeegee with a fixed load-bearing part.

Also Published As

Publication number Publication date
US20080271631A1 (en) 2008-11-06
US7677170B2 (en) 2010-03-16
JP2007533508A (en) 2007-11-22
JP4603038B2 (en) 2010-12-22
ATE391016T1 (en) 2008-04-15
DE602005005805T2 (en) 2009-04-30
DE602005005805D1 (en) 2008-05-15
EP1588850A1 (en) 2005-10-26
EP1737657A1 (en) 2007-01-03
WO2005102699A1 (en) 2005-11-03

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