EP1127691A1 - Machine for cleaning screens used in screen printing - Google Patents

Machine for cleaning screens used in screen printing Download PDF

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Publication number
EP1127691A1
EP1127691A1 EP00440048A EP00440048A EP1127691A1 EP 1127691 A1 EP1127691 A1 EP 1127691A1 EP 00440048 A EP00440048 A EP 00440048A EP 00440048 A EP00440048 A EP 00440048A EP 1127691 A1 EP1127691 A1 EP 1127691A1
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EP
European Patent Office
Prior art keywords
screen
machine according
brush
movable
support
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.)
Withdrawn
Application number
EP00440048A
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German (de)
French (fr)
Inventor
François Lamirand
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.)
Serig
Original Assignee
Serig
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Filing date
Publication date
Application filed by Serig filed Critical Serig
Priority to EP00440048A priority Critical patent/EP1127691A1/en
Publication of EP1127691A1 publication Critical patent/EP1127691A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/001—Devices for cleaning parts removed from the printing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/003—Cleaning arrangements or devices for screen printers or parts thereof
    • B41F35/005—Cleaning arrangements or devices for screen printers or parts thereof for flat screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/23—Brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/26—Spraying devices

Definitions

  • the present invention relates to a machine for the degreasing of the tissue screens used in the field of screen printing.
  • the object of the present invention is to remedy these disadvantages by proposing a washing machine to improve the working conditions of operators and unclogging screens by removing including so-called "ghost" images.
  • the screen cleaning machine screen printing according to the invention is essentially characterized in that it consists of a sealed enclosure containing at least one degravation station of at least one screen printing screen, holding means allowing maintain said screen vertically, possibly means for axially displacing the latter, said release station comprising two release supports each equipped with a rotary brush associated with means spraying detergents and means of rinsing water spray, said supports being adapted on the one hand to be arranged on both sides said screen and secondly to be able to brush and spray the entire surface of the latter's canvas.
  • the plates of release are movable in vertical translation and are adjustable in spacing relative to the screen fabric.
  • the supports for degravage means are integral with a mobile column in horizontal translation transversely, and in which the plates are movable in vertical translation.
  • a means support degreasing system has three spray nozzles detergents, preferably integrated in the brush level of its axis of rotation, a spray nozzle rinsing water under high pressure can advantageously be movable in translation perpendicular to the canvas the screen so as to position itself at a distance appropriate of the latter, said nozzle being able, by example, be secured to the end of the rod of a cylinder.
  • the machine has a storage room for washed screens.
  • the machine according to the present invention can further include blowing means for drying fabrics consisting for example of a vertical ramp fitted with nozzles connected to a compressed air supply, said ramp being movable in horizontal translation along said screen to be dried and spaced from it latest.
  • blowing means for drying fabrics consisting for example of a vertical ramp fitted with nozzles connected to a compressed air supply, said ramp being movable in horizontal translation along said screen to be dried and spaced from it latest.
  • Brushes whose axis of rotation is perpendicular to the canvas, can advantageously be mounted on an elastic pressure system allowing to obtain a good support of the brush on said canvas during brushing.
  • these consist of a mobile trolley with an L-shaped frame on the one hand mounted on casters and having tabs allowing maintain the screen vertically in said frame, and on the other hand a shoe capable of being moved on the branch horizontal of L able to receive and keep blocked the screen in said frame.
  • the screen screen stripping machine consists of a sealed enclosure 1 of rectangular shape comprising on the one hand at the front of the doors 10 for loading and unloading screens and at rear door 10 'for breakdown access, and other share a control desk 11 integrating a program of management of washing and drying processes, and pumps high pressure 12 for spraying rinse water and air for drying screens.
  • Enclosure 1 contains, as we can see on Figure 2 on the one hand the release means 2 at least a screen 13, which washing means are integrated in a washing column 2 'and on the other hand means for hold 3 to hold the screens vertically 13, consisting of a frame 14 and a fabric canvas 15 intended to be unraveled, and to move them longitudinally in enclosure 1.
  • the means 3 for holding the screens 13 have an L-shaped support frame 30 in which is placed a screen 13 held by cleats 31, which frame support 30 is mounted on rolling means 300 rolling in a guide rail 301 and is moved in movement thanks to a metal chain 302 driven by a toothed pulley 303, of which only the axis 304 of the drive motor is represented.
  • the release means 2 of a screen screen printing 13 are supported by two support plates 20 located on either side of the screen 13, parallel to this last, and each provided with a rotary brush 21 of which the axis of rotation is perpendicular to the screen 13, three washing spray nozzles integrated in each brush 21 at the axis of rotation, and a nozzle 22 for high pressure water spraying connected to a high pressure pump 12.
  • the high water spray nozzle 22 pressure is secured to the end of a rod 23 'of so that it can be positioned as close as possible to the canvas 15 of screen 13.
  • the plates 20 are associated with means 24 allowing to move these in translation vertical, which means 24 consist of rods vertical 24 'on which are slidably mounted plates 2 driven in translation using a chain 25 made of a metallic material 25 such as stainless steel to resist, unlike a belt in plastic, washing chemicals, driven by a motor 26, via pinions 26 'toothed also in stainless steel, the pinions located at of plate 2 not being visible.
  • means 24 consist of rods vertical 24 'on which are slidably mounted plates 2 driven in translation using a chain 25 made of a metallic material 25 such as stainless steel to resist, unlike a belt in plastic, washing chemicals, driven by a motor 26, via pinions 26 'toothed also in stainless steel, the pinions located at of plate 2 not being visible.
  • the displacement of the plates 20 in vertical translation and displacement of the screens 13 parallel to these allows to wash all the surface of the fabric 15 of the screen 13 on its two faces.
  • the brushing and spraying detergents and water under high pressure will preferably be done by bottom up and vice versa, by moving column 2 ' transversely so as to present a plate 20 to proximity of the fabric 15 to degrade one of its faces then moving column 2 'in the opposite direction to degrade the other side.
  • Regular brushing of the tissue canvas 15 on both sides with the projection of a product of washing in the axis of the brush allows to obtain a high cleaning efficiency, in particular by eliminating so-called "ghost" images.
  • the spray nozzle 22 for spraying washing is connected, via conduits not shown and solenoid valves, to tanks 40, 41 and 42 each containing a specific detergent.
  • Each tank 40, 41 and 42 is associated with a regulator of pressure, not shown.
  • a screen 13 is locked in position in support frame 30, thanks to a shoe 32 adjustable in position on the branch horizontal 33 of L by introducing a lug 34 of shoe 32 in one of the holes 35 made in the branch 33, at proximity of the free vertical edge 16 of the screen frame 14 13, which shoe 32 is provided with a knurled nut 36 intended to moderately screwed a rod 37 against the free edge 16 of the screen 13 to block it in the support 30. It is thus possible to wedge in position in the support frame 30 of screens 13,13 'of various dimensions.
  • a shim 27 such as a ring, is interposed between the brush 21 and its support 28 for securing to the washing plate 20, the change of shim 27 being effected by dismantling the brush 21 of its support 28 secured to the latter by three screws 29.
  • Adjusting the frame movement support 3 of a screen 13, depending on the length of this last, can be performed, as can be seen on the Figure 5, using a sensor 6 at the start and end of race consisting of two stops 60 and 60 'integral with the support frame 3, adjustable in spacing according to the frame length, each with two sides beveled 61 and 61 'respectively, one of which is intended coming into contact with a contactor 62, secured to the column 2 ', recording the start or end position of the travel of the support frame 3 and therefore, so relative, degravage means 2, and in particular brushes.
  • the drying process of the fabric 15 the screen 13 is produced by means of a vertical ramp, not shown, fitted with nozzles connected to the air supply compressed 12, said ramp being movable in spacing by compared to the fabric 15 thanks to a jack.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

The screen cleaning machine has a sealed container with rotating brushes (21) and rinsing water sprays (22) on vertical moving supports (2) and horizontal movement (300) of the screen (15).

Description

La présente invention a pour objet une machine pour le dégravage des écrans de tissus utilisés dans le domaine de la sérigraphie.The present invention relates to a machine for the degreasing of the tissue screens used in the field of screen printing.

Le marché de la sérigraphie industrielle évolue sans cesse. En effet, le nombre de couleurs utilisées augmente continuellement et les séries sont de moins en moins importantes mais renouvelables, ce qui nécessite soit d'avoir des stocks importants d'écrans de sérigraphie avec les inconvénients que cela représente en coût et en encombrement, soit d'effectuer des opérations de lavage et de rinçage desdits écrans, connues sous le nom d'opérations de dégravage, entre chaque couleur ou entre chaque série renouvelable.The industrial screen printing market is evolving non-stop. Indeed, the number of colors used continuously increasing and the series are less and less less important but renewable, which requires either to have large stocks of screen printing screens with the disadvantages that this represents in cost and space, either to carry out washing operations and rinsing said screens, known as operations of etching, between each color or between each series renewable.

Actuellement, les toiles des écrans de sérigraphie sont lavées manuellement au moyens de brosses et de produits de lavage permettant de dissoudre ou d'enlever les résidus d'encre, et rincés avec de l'eau sous haute pression.Currently, the canvases of the screens of serigraphy are washed manually by means of brushes and detergents to dissolve or remove ink residue, and rinsed with high water pressure.

Toutefois ces opérations de dégravage entraínent de nombreux désagréments pour l'opérateur. En effet, les produits chimiques dégagent des odeurs difficilement supportables et les projections d'eau à haute pression sont dangereuses et très bruyantes. En outre les opérations de brossage sont pénibles et très contraignantes et ne permettent pas d'obtenir un grand rendement de nettoyage. De plus ces méthodes et leurs moyens de mise en oeuvre de lavage ne permettent pas de supprimer totalement les images dites "images fantômes" restant imprimées dans la toile de l'écran de sérigraphie après son nettoyage.However these degravage operations entail many inconveniences for the operator. Indeed, the chemicals hardly smell bearable and high pressure water splashes are dangerous and very noisy. In addition the operations of brushing are painful and very restrictive and do not not allow to obtain a high cleaning efficiency. Of plus these methods and their means of implementing washing do not allow to completely delete the images say "ghost images" remaining printed in the canvas the screen printing screen after cleaning.

La présente invention a pour but de remédier à ces inconvénients en proposant une machine de lavage permettant d'améliorer les conditions de travail des opérateurs et le dégravage des écrans en supprimant notamment les images dites "fantômes".The object of the present invention is to remedy these disadvantages by proposing a washing machine to improve the working conditions of operators and unclogging screens by removing including so-called "ghost" images.

La machine de dégravage des écrans de sérigraphie selon l'invention se caractérise essentiellement en ce qu'elle est constituée d'une enceinte étanche renfermant au moins un poste de dégravage d'au moins un écran de sérigraphie, des moyens de maintien permettant de maintenir ledit écran verticalement, éventuellement des moyens permettant de déplacer axialement ce dernier, ledit poste de dégravage comprenant deux supports de dégravage équipés chacun d'une brosse rotative associée à des moyens de pulvérisation de produits de lavage et des moyens de pulvérisation d'eau de rinçage, lesdits supports étant adaptés d'une part pour être disposés de part et d'autre dudit écran et d'autre part pour pouvoir brosser et pulvériser toute la surface de la toile de ce dernier.The screen cleaning machine screen printing according to the invention is essentially characterized in that it consists of a sealed enclosure containing at least one degravation station of at least one screen printing screen, holding means allowing maintain said screen vertically, possibly means for axially displacing the latter, said release station comprising two release supports each equipped with a rotary brush associated with means spraying detergents and means of rinsing water spray, said supports being adapted on the one hand to be arranged on both sides said screen and secondly to be able to brush and spray the entire surface of the latter's canvas.

Conformément à l'invention les plaques de dégravage sont mobiles en translation verticale et sont réglables en écartement par rapport à la toile de l'écran.In accordance with the invention, the plates of release are movable in vertical translation and are adjustable in spacing relative to the screen fabric.

Dans un mode de réalisation préférentielle de l'invention les supports de moyens de dégravage sont solidaires d'une colonne mobile en translation horizontale transversalement, et dans laquelle les plaques sont mobiles en translation verticale.In a preferred embodiment of the invention the supports for degravage means are integral with a mobile column in horizontal translation transversely, and in which the plates are movable in vertical translation.

Conformément à l'invention un support de moyens de dégravage comporte trois buses de pulvérisation des produits de lavage, de préférence intégrée dans la brosse au niveau de son axe de rotation, une buse de pulvérisation d'eau de rinçage sous haute pression pourra avantageusement être mobile en translation perpendiculairement à la toile de l'écran de manière à venir se positionner à une distance appropriée de cette dernière, ladite buse pouvant, par exemple, être solidarisée à l'extrémité de la tige d'un vérin.In accordance with the invention, a means support degreasing system has three spray nozzles detergents, preferably integrated in the brush level of its axis of rotation, a spray nozzle rinsing water under high pressure can advantageously be movable in translation perpendicular to the canvas the screen so as to position itself at a distance appropriate of the latter, said nozzle being able, by example, be secured to the end of the rod of a cylinder.

Toujours conformément à l'invention la machine comporte une chambre de stockage des écrans lavés.Still in accordance with the invention, the machine has a storage room for washed screens.

La machine selon la présente invention peut comprendre en outre des moyens de soufflage pour le séchage des toiles consistant par exemple en une rampe verticale munie de buses reliées à une alimentation en air comprimé, ladite rampe étant mobile en translation horizontale le long dudit écran à sécher et en écartement par rapport à ce dernier.The machine according to the present invention can further include blowing means for drying fabrics consisting for example of a vertical ramp fitted with nozzles connected to a compressed air supply, said ramp being movable in horizontal translation along said screen to be dried and spaced from it latest.

Les brosses, dont l'axe de rotation est perpendiculaire à la toile, pourront avantageusement être montées sur un système presseur élastique permettant d'obtenir un bon appui de la brosse sur ladite toile durant son brossage.Brushes, whose axis of rotation is perpendicular to the canvas, can advantageously be mounted on an elastic pressure system allowing to obtain a good support of the brush on said canvas during brushing.

Dans une forme de réalisation particulière des moyens de maintien d'un écran, ceux ci sont constitués d'un chariot mobile muni d'une part d'un cadre en forme de L monté sur des roulettes et comportant des taquets permettant de maintenir l'écran verticalement dans ledit cadre, et d'autre part un sabot apte à être déplacé sur la branche horizontale du L apte à recevoir et à maintenir bloqué l'écran dans ledit cadre.In a particular embodiment of the means for holding a screen, these consist of a mobile trolley with an L-shaped frame on the one hand mounted on casters and having tabs allowing maintain the screen vertically in said frame, and on the other hand a shoe capable of being moved on the branch horizontal of L able to receive and keep blocked the screen in said frame.

Les avantages et les caractéristiques de la présente invention ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente plusieurs modes de réalisation non limitatifs.

  • la figure 1 représente une vue de perspective de l'enceinte de la machine selon l'invention.
  • la figure 2 représente une vue en perspective des moyens de nettoyage des écrans et de leur support mobile.
  • la figure 3 représente une vue en plan de profil des moyens de maintien des écrans dans la machine selon l'invention.
  • la figure 4 représente une vue en coupe longitudinale d'une brosse et de son support de fixation à la plaque de lavage.
  • la figure 5 représente une vue de détail d'un dispositif de réglage de la course des brosses en fonction de la longueur de l'écran à dégraver.
The advantages and characteristics of the present invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents several non-limiting embodiments.
  • Figure 1 shows a perspective view of the enclosure of the machine according to the invention.
  • FIG. 2 represents a perspective view of the means for cleaning the screens and their movable support.
  • FIG. 3 represents a profile plan view of the means for holding the screens in the machine according to the invention.
  • FIG. 4 represents a view in longitudinal section of a brush and of its support for fixing to the washing plate.
  • FIG. 5 represents a detailed view of a device for adjusting the stroke of the brushes as a function of the length of the screen to be degrapped.

Si on se réfère à la figure 1 on peut voir que la machine de dégravage d'écrans de sérigraphie, selon l'invention, est constituée d'une enceinte étanche 1 de forme rectangulaire comprenant d'une part à l'avant des portes 10 pour le chargement et déchargement des écrans et à l'arrière une porte 10' pour accès dépannage, et d'autre part un pupitre de commande 11 intégrant un programme de gestion des processus de lavage et de séchage, et des pompes hautes pression 12 pour la pulvérisation d'eau de rinçage et d'air pour le séchage des écrans.If we refer to Figure 1 we can see that the screen screen stripping machine, according to the invention consists of a sealed enclosure 1 of rectangular shape comprising on the one hand at the front of the doors 10 for loading and unloading screens and at rear door 10 'for breakdown access, and other share a control desk 11 integrating a program of management of washing and drying processes, and pumps high pressure 12 for spraying rinse water and air for drying screens.

L'enceinte 1 renferme, comme on peut le voir sur la figure 2 d'une part des moyens de dégravage 2 d'au moins un écran 13, lesquels moyens de lavage sont intégrés dans une colonne de lavage 2' et d'autre part des moyens de maintien 3 permettant de maintenir verticalement les écrans 13, constitués d'un cadre 14 et d'une toile en tissus 15 destinée à être dégravée, et de les déplacer longitudinalement dans l'enceinte 1.Enclosure 1 contains, as we can see on Figure 2 on the one hand the release means 2 at least a screen 13, which washing means are integrated in a washing column 2 'and on the other hand means for hold 3 to hold the screens vertically 13, consisting of a frame 14 and a fabric canvas 15 intended to be unraveled, and to move them longitudinally in enclosure 1.

Les moyens de maintien 3 des écrans 13 comportent un cadre support 30 en forme de L dans lequel est placé un écran 13 maintenu par des taquets 31, lequel cadre support 30 est monté sur des moyens de roulement 300 roulant dans un rail de guidage 301 et est mû en déplacement grâce à une chaíne métallique 302 entraínée par une poulie dentée 303, dont seul l'axe 304 du moteur d'entraínement est représenté.The means 3 for holding the screens 13 have an L-shaped support frame 30 in which is placed a screen 13 held by cleats 31, which frame support 30 is mounted on rolling means 300 rolling in a guide rail 301 and is moved in movement thanks to a metal chain 302 driven by a toothed pulley 303, of which only the axis 304 of the drive motor is represented.

Les moyens de dégravage 2 d'un écran de sérigraphie 13 sont supportés par deux plaques support 20 situées de part et d'autre de l'écran 13, parallèlement à ce dernier, et munies chacune d'une brosse rotative 21 dont l'axe de rotation est perpendiculaire à l'écran 13, de trois buses de pulvérisation de produits de lavage intégrée dans chaque brosse 21 au niveau de l'axe de rotation, et d'une buse 22 pour la pulvérisation d'eau à haute pression connectée à une pompe haute pression 12.The release means 2 of a screen screen printing 13 are supported by two support plates 20 located on either side of the screen 13, parallel to this last, and each provided with a rotary brush 21 of which the axis of rotation is perpendicular to the screen 13, three washing spray nozzles integrated in each brush 21 at the axis of rotation, and a nozzle 22 for high pressure water spraying connected to a high pressure pump 12.

La buse 22 de pulvérisation d'eau à haute pression est solidarisée à l'extrémité d'une tige 23' de manière à pouvoir être positionné au plus près de la toile 15 de l'écran 13.The high water spray nozzle 22 pressure is secured to the end of a rod 23 'of so that it can be positioned as close as possible to the canvas 15 of screen 13.

Les plaques 20 sont associés à des moyens 24 permettant de déplacer ces dernières en translation verticale, lesquels moyens 24 consistent en des tiges verticales 24' sur lesquelles sont montées coulissant les plaques 2 entraínées en translation à l'aide d'une chaíne 25 réalisée en un matériau métallique 25 tel que de l'inox permettant de résister, contrairement à une courroie en matière plastique, aux produits chimiques de lavage, commandée par un moteur 26, par l'intermédiaire de pignons dentés 26' également en inox, les pignons situés au niveau de la plaque 2 n'étant pas visibles.The plates 20 are associated with means 24 allowing to move these in translation vertical, which means 24 consist of rods vertical 24 'on which are slidably mounted plates 2 driven in translation using a chain 25 made of a metallic material 25 such as stainless steel to resist, unlike a belt in plastic, washing chemicals, driven by a motor 26, via pinions 26 'toothed also in stainless steel, the pinions located at of plate 2 not being visible.

Ainsi, le déplacement des plaques 20 en translation verticale et le déplacement des écrans 13 parallèlement à ces dernières permet de laver toute la surface de la toile 15 de l'écran 13 sur ses deux faces. Le brossage et les pulvérisation de produits de lavage et d'eau sous haute pression se feront de préférence par pallier de bas en haut et inversement, en déplaçant la colonne 2' transversalement de manière à présenter une plaque 20 à proximité de la toile 15 pour dégraver l'une de ses faces puis en déplaçant la colonne 2' dans le sens inverse pour dégraver l'autre face. Le brossage régulier du tissus de la toile 15 sur ses deux faces avec la projection d'un produit de lavage dans l'axe de la brosse, permet d'obtenir une grande efficacité de dégravage en supprimant notamment les images dites "fantômes".Thus, the displacement of the plates 20 in vertical translation and displacement of the screens 13 parallel to these allows to wash all the surface of the fabric 15 of the screen 13 on its two faces. The brushing and spraying detergents and water under high pressure will preferably be done by bottom up and vice versa, by moving column 2 ' transversely so as to present a plate 20 to proximity of the fabric 15 to degrade one of its faces then moving column 2 'in the opposite direction to degrade the other side. Regular brushing of the tissue canvas 15 on both sides with the projection of a product of washing in the axis of the brush, allows to obtain a high cleaning efficiency, in particular by eliminating so-called "ghost" images.

Le réglage en écartement des plaques 20 par rapport à la toile 15 d'un écran 13 par le déplacement transversal de colonne 2' est réalisé grâce à un plateau 4 supportant cette dernière, monté sur des rails de guidage transversaux 40 et mu par des moyens moteurs non représentés.Adjusting the spacing of the plates 20 by relative to the canvas 15 of a screen 13 by displacement transverse column 2 'is made thanks to a plate 4 supporting the latter, mounted on guide rails transverse 40 and mu by non motor means represented.

La buse 22 de pulvérisation de produits de lavage est reliée, par l'intermédiaire de conduits non représentés et d'électrovannes, à des réservoirs 40,41 et 42 contenant chacun un produit de lavage particulier. Chaque réservoir 40,41 et 42 est associé à un régulateur de pression, non représenté.The spray nozzle 22 for spraying washing is connected, via conduits not shown and solenoid valves, to tanks 40, 41 and 42 each containing a specific detergent. Each tank 40, 41 and 42 is associated with a regulator of pressure, not shown.

Si on se réfère à la figure 3 on peut voir qu'un écran 13 est bloqué en position dans le cadre support 30, grâce à un sabot 32 réglable en position sur la branche horizontale 33 du L en introduisant un ergot 34 du sabot 32 dans l'un des trous 35 pratiqués dans la branche 33, à proximité du bord libre vertical 16 du cadre 14 de l'écran 13, lequel sabot 32 est muni d'un écrou moleté 36 destiné à vissé modérément une tige 37 contre le bord libre 16 de l'écran 13 pour le bloquer dans le support 30. Il est ainsi possible de caler en position dans le cadre support 30 des écrans 13,13' de dimensions diverses.If we refer to Figure 3 we can see that a screen 13 is locked in position in support frame 30, thanks to a shoe 32 adjustable in position on the branch horizontal 33 of L by introducing a lug 34 of shoe 32 in one of the holes 35 made in the branch 33, at proximity of the free vertical edge 16 of the screen frame 14 13, which shoe 32 is provided with a knurled nut 36 intended to moderately screwed a rod 37 against the free edge 16 of the screen 13 to block it in the support 30. It is thus possible to wedge in position in the support frame 30 of screens 13,13 'of various dimensions.

Si on se réfère maintenant à la figure 4 on peut voir que pour améliorer le contact entre les brosses 21 et la toile d'un écran 13, qui se dégrade du fait de l'usure des poils 21' au cours des différents cycles de lavage, une cale 27, telle qu'un anneau, est interposée entre la brosse 21 et son support 28 de solidarisation à la plaque de lavage 20, le changement de cale 27 étant effectué en démontant la brosse 21 de son support 28 solidarisé à cette dernière par trois vis 29.If we now refer to Figure 4 we can see that to improve the contact between the brushes 21 and the fabric of a screen 13, which degrades due to wear bristles 21 'during the different washing cycles, a shim 27, such as a ring, is interposed between the brush 21 and its support 28 for securing to the washing plate 20, the change of shim 27 being effected by dismantling the brush 21 of its support 28 secured to the latter by three screws 29.

Le réglage de la course de déplacement du cadre support 3 d'un écran 13, en fonction de la longueur de ce dernier, peut être effectué, comme on peut le voir sur la figure 5, au moyen d'un capteur 6 de début et de fin de course constitué de deux butées 60 et 60' solidaires du cadre support 3, réglables en écartement en fonction de la longueur du cadre, et comportant chacune deux faces biseautées respectivement 61 et 61' dont l'une est destinée à venir au contact d'un contacteur 62, solidarisé à la colonne 2', enregistrant la position du début ou de la fin de la course du cadre support 3 et donc, de manière relative, des moyens de dégravage 2, et notamment des brosses.Adjusting the frame movement support 3 of a screen 13, depending on the length of this last, can be performed, as can be seen on the Figure 5, using a sensor 6 at the start and end of race consisting of two stops 60 and 60 'integral with the support frame 3, adjustable in spacing according to the frame length, each with two sides beveled 61 and 61 'respectively, one of which is intended coming into contact with a contactor 62, secured to the column 2 ', recording the start or end position of the travel of the support frame 3 and therefore, so relative, degravage means 2, and in particular brushes.

Le processus de séchage de la toile 15 de l'écran 13 est réalisé au moyen d'une rampe verticale, non représentée, munie de buses reliées à l'alimentation en air comprimé 12, ladite rampe étant mobile en écartement par rapport à la toile 15 grâce à un vérin.The drying process of the fabric 15 the screen 13 is produced by means of a vertical ramp, not shown, fitted with nozzles connected to the air supply compressed 12, said ramp being movable in spacing by compared to the fabric 15 thanks to a jack.

Claims (9)

1. Machine pour le nettoyage des écrans de tissus (13) utilisés dans le domaine de la sérigraphie caractérisée en ce qu'elle est constituée d'une enceinte étanche (1) renfermant au moins un poste de dégravage d'au moins un écran de sérigraphie (13), des moyens de maintien (3) permettant de maintenir ledit écran verticalement, éventuellement des moyens (300,301,302) permettant de déplacer axialement ce dernier, ledit poste de dégravage comprenant deux supports de moyens de dégravage (2) équipés chacun d'une brosse rotative (21) associée à des moyens de pulvérisation de produits de lavage et des moyens de pulvérisation d'eau de rinçage (22), lesdits supports étant adaptés d'une part pour être disposés de part et d'autre dudit écran (13) et d'autre part pour pouvoir brosser et pulvériser toute la surface de la toile (15) de ce dernier. 1. Machine for cleaning tissue screens (13) used in the field of screen printing characterized in that it consists of a sealed enclosure (1) containing at least one degravation station of at least one screen serigraphy (13), holding means (3) making it possible to hold said screen vertically, possibly means (300,301,302) making it possible to move the latter axially, said release station comprising two supports for release means (2) each equipped with a rotary brush (21) associated with means for spraying washing products and means for spraying rinse water (22), said supports being adapted on the one hand to be arranged on either side of said screen ( 13) and secondly to be able to brush and spray the entire surface of the canvas (15) of the latter. 2. Machine selon la revendication 1 caractérisée en ce que les supports des moyens de dégravage (2) sont mobiles en translation verticale et sont réglables en écartement par rapport à la toile (15) de l'écran (13). 2. Machine according to claim 1 characterized in that the supports of the release means (2) are movable in vertical translation and are adjustable in spacing relative to the fabric (15) of the screen (13). 3. Machine selon la revendication 2 caractérisée en ce que les supports des moyens de dégravage (2) sont solidaires d'une colonne (2') mobile en translation horizontale dans une direction transversale, et en ce que lesdits support (2) sont mobiles en translation verticale dans ladite colonne (2'). 3. Machine according to claim 2 characterized in that the supports of the release means (2) are integral with a column (2 ') movable in horizontal translation in a transverse direction, and in that said support (2) are movable in vertical translation in said column (2 '). 4. Machine selon l'une quelconque des revendications précédentes caractérisée en ce qu'un support de moyens de dégravage (2) comporte une buse de pulvérisation des produits de lavage intégrée dans la brosse au niveau de son axe de rotation et une buse de pulvérisation sous haute pression (22) d'eau de rinçage. 4. Machine according to any one of the preceding claims, characterized in that a support for defogging means (2) comprises a spray nozzle for washing products integrated in the brush at its axis of rotation and a spray nozzle under high pressure (22) of rinsing water. 5. Machine selon la revendication 4 caractérisée en ce que les deux buses de pulvérisation d'eau de rinçage (22) est mobile en translation perpendiculairement à la toile (15) de l'écran (13). 5. Machine according to claim 4 characterized in that the two rinsing water spray nozzles (22) is movable in translation perpendicular to the fabric (15) of the screen (13). 6. Machine selon l'une quelconque des revendications précédentes caractérisée en ce que les moyens de soufflage consistent en une rampe verticale munie de buses reliées à une alimentation en air comprimé, ladite rampe étant mobile en translation horizontale le long dudit écran à sécher et en écartement par rapport à ce dernier. 6. Machine according to any one of the preceding claims, characterized in that the blowing means consist of a vertical ramp provided with nozzles connected to a compressed air supply, said ramp being movable in horizontal translation along said screen to be dried and in spacing from the latter. 6. Machine selon l'une quelconque des revendications précédentes caractérisée en ce que les moyens de maintien (3) d'un écran (13) sont constitués d'un chariot mobile muni d'un cadre en forme de L. 6. Machine according to any one of the preceding claims, characterized in that the holding means (3) of a screen (13) consist of a mobile carriage provided with an L-shaped frame. 7. Machine selon l'une quelconque des revendications précédentes caractérisée en ce que la solidarisation d'une brosse à son support est adaptée pour pouvoir interposer une cale d'épaisseur déterminée en fonction de l'usure des poils de ladite brosse. 7. Machine according to any one of the preceding claims, characterized in that the attachment of a brush to its support is adapted to be able to interpose a shim of thickness determined according to the wear of the bristles of said brush. 8. Machine selon l'une quelconque des revendications précédentes caractérisée en ce que les brosses sont montées sur un système presseur élastique permettant d'obtenir un bon appui desdites brosses sur la toile. 8. Machine according to any one of the preceding claims, characterized in that the brushes are mounted on an elastic pressure system making it possible to obtain good support of said brushes on the canvas.
EP00440048A 2000-02-18 2000-02-18 Machine for cleaning screens used in screen printing Withdrawn EP1127691A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00440048A EP1127691A1 (en) 2000-02-18 2000-02-18 Machine for cleaning screens used in screen printing

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Application Number Priority Date Filing Date Title
EP00440048A EP1127691A1 (en) 2000-02-18 2000-02-18 Machine for cleaning screens used in screen printing

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EP1127691A1 true EP1127691A1 (en) 2001-08-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397847A (en) * 2010-09-10 2012-04-04 李世武 Cleaning machine for dirty marks on screens
CN109454975A (en) * 2018-12-17 2019-03-12 昆山恒盛电子有限公司 A kind of degreasing plant of solar energy halftone

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1460779A1 (en) * 1963-03-26 1970-02-19 Erich Kaelin Process for washing and drying film printing stencils and equipment for carrying out the process
FR2669906A1 (en) * 1990-11-29 1992-06-05 Cartier Jean Pierre Device for transporting (silk) screen printing screens (stencils) on a washing and engraving-removal line
DE4229668A1 (en) * 1992-09-04 1994-03-10 Werner Vidoni Solvent-free cleaning of screen printing stencils - involves application of release solution from printing side into copying layer by brush
DE19605058A1 (en) * 1996-02-12 1997-08-14 Ibg Monforts Gmbh & Co Washing machine for cleaning of print soiled press plates

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1460779A1 (en) * 1963-03-26 1970-02-19 Erich Kaelin Process for washing and drying film printing stencils and equipment for carrying out the process
FR2669906A1 (en) * 1990-11-29 1992-06-05 Cartier Jean Pierre Device for transporting (silk) screen printing screens (stencils) on a washing and engraving-removal line
DE4229668A1 (en) * 1992-09-04 1994-03-10 Werner Vidoni Solvent-free cleaning of screen printing stencils - involves application of release solution from printing side into copying layer by brush
DE19605058A1 (en) * 1996-02-12 1997-08-14 Ibg Monforts Gmbh & Co Washing machine for cleaning of print soiled press plates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Automatisches Siebwaschen und Destillieren von Lösemitteln", DEUTSCHER DRUCKER (SIEBDRUCK-PRAXIS), 1989, pages 19 - 21, XP000068370 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397847A (en) * 2010-09-10 2012-04-04 李世武 Cleaning machine for dirty marks on screens
CN102397847B (en) * 2010-09-10 2013-08-14 李世武 Cleaning machine for dirty marks on screens
CN109454975A (en) * 2018-12-17 2019-03-12 昆山恒盛电子有限公司 A kind of degreasing plant of solar energy halftone
CN109454975B (en) * 2018-12-17 2024-02-02 昆山恒盛电子有限公司 Degreasing device for solar screen

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