EP0117190A1 - Inking unit for a printing machine, with individually adjustable metering segments - Google Patents

Inking unit for a printing machine, with individually adjustable metering segments Download PDF

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Publication number
EP0117190A1
EP0117190A1 EP84400255A EP84400255A EP0117190A1 EP 0117190 A1 EP0117190 A1 EP 0117190A1 EP 84400255 A EP84400255 A EP 84400255A EP 84400255 A EP84400255 A EP 84400255A EP 0117190 A1 EP0117190 A1 EP 0117190A1
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EP
European Patent Office
Prior art keywords
segments
inkwell
metering
support block
rebate
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.)
Granted
Application number
EP84400255A
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German (de)
French (fr)
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EP0117190B1 (en
Inventor
Michel Armelin
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 Chambon SA
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Machines Chambon SA
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.)
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Publication date
Application filed by Machines Chambon SA filed Critical Machines Chambon SA
Priority to AT84400255T priority Critical patent/ATE23486T1/en
Publication of EP0117190A1 publication Critical patent/EP0117190A1/en
Application granted granted Critical
Publication of EP0117190B1 publication Critical patent/EP0117190B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2231/00—Inking devices; Recovering printing ink
    • B41P2231/12—Axially segmented ink blades

Definitions

  • the present invention relates to an inkwell with metering segments individually adjusted for a printer.
  • Inkwells for printing machines which comprise a container containing ink, this container being delimited, on one side, by a horizontal ink cylinder driven in rotation, on the opposite side, by a body extending parallel to the ink cylinder , and laterally, by two vertical flanges.
  • the body carries, in the immediate vicinity of the peripheral surface of the ink cylinder, a scraper blade parallel to the ink cylinder and which is formed by a succession of metering segments adjacent to each other and whose upper edges extend parallel to the ink cylinder , at a small distance from the peripheral surface thereof, this distance being adjustable individually for each dosing segment.
  • dosing segments are fixed to the body, at their lower parts, by means of screws and they are actuated individually by pushers extending through the body and which are controlled, for example, by adjusting levers or motorized assemblies. .
  • pushers extending through the body and which are controlled, for example, by adjusting levers or motorized assemblies.
  • Such an inkwell is described for example in French patent application No. 80 18 532.
  • Inkwells of this type have a certain number of drawbacks, especially from the point of view of maintenance and replacement of the metering segments.
  • the entire inkwell must actually be dismantled in order to have access to the dosing segments.
  • a change of these segments necessarily results in having to make new adjustments to the pushers controlling the individual segments.
  • the present invention aims to remedy these drawbacks by providing a particularly simple inkwell allowing easy and rapid change of the segments.
  • this inkwell with metering segments individually adjusted for a printer comprising a tray containing ink and delimited, on one side, by a horizontal ink cylinder and, on the other side, by a body extending transversely, as well as by two vertical and lateral flanges, the body of the inkwell carrying, near the peripheral surface of the ink cylinder, a series of metering segments aligned parallel to the ink cylinder, and the upper edges of which determine, with the peripheral surface of the ink cylinder, intervals of widths adjustable as a function of the thickness of the ink film to be formed on the ink cylinder, downstream of each metering segment, adjustment pushers mounted to slide in the body, and acting respectively, at their ends, on the upper parts of the individual dosing segments, is characterized in that each dosing segment is fixed to a front face of a common support block itself mounted removable on the body, this block being pierced, in its upper part, with holes, through which extend the pushers acting on the
  • the inkwell according to the invention has the advantage that when it is desired to clean, change or rectify the dosing segments, it suffices to dismantle the whole common support block which can then be reassembled on the body of the inkwell , without the need to redo the settings of the positions of the pushers acting on the metering segments. Furthermore, since all the individual segments are mounted in common on the same support by constituting an inexpensive and recoverable assembly, the inkstand according to the invention also makes it possible to mount it without play between segments because it is then possible to '' machine the assembly both lengthwise and vertically, to bring all the segments to the desired length, whatever the tolerances of the individual segments, provided, of course, that the variations in dimensions are not too great.
  • the common support block is housed under a plate constituting the bottom of the inkwell and at this point sealing is ensured either by direct contact between the upper edge of each metering segment and an extreme lower face of this bottom. , or as a result of the provision of a deformable blade fixed on the upper face of the block and extending above the individual metering segments.
  • the inkwell according to the invention which is shown in the drawing comprises an ink cylinder 1 rotated in the direction of the arrow f, that is to say in the direction anticlockwise, a body 2 extending parallel to the axis of the cylinder 1 and two lateral and vertical flanges 3.
  • the cylinder 1, the body 2 of the two flanges 3 constitute a container containing an ink reserve 4 intended to form, on the peripheral surface of the ink cylinder 1, a film 5 of adjustable thickness.
  • the inkwell comprises, for adjusting the thickness of the film 5, a succession of individual metering segments 6 which are substantially coplanar and are juxtaposed to each other in a direction parallel to the axis of the ink cylinder 1, forming in somehow a scraping blade.
  • Each of these individual dosing segments 6 is constituted by a plate which is fixed to a common support block 7, by means of screws 8 passing through holes drilled in the dosing segments 6 and screwed into tapped holes provided in the front face. 7a of the support block 7.
  • Each dosing segment 6 has, at its upper part, a protuberance 6b in the direction of the ink cylinder.
  • the support block 7 is in the form of a parallelepiped and it is fixed to the body 2 and more particularly in a rebate 9 thereof, by means of screws 11.
  • the rebate 9 has a lower bearing face 9a and a face perpendicular front 9b against which the support block 7 is pressed.
  • Each of the metering segments 6 forms in a way a flexible blade fixed at its lower end (or elsewhere) and its movable upper part which is close to the peripheral surface of the ink cylinder 1, is actuated by an adjustment pusher 12.
  • Each pusher 12 is slidably mounted in a hole 13 drilled in the body 2 and in a coaxial hole 14 drilled in the upper part of the common support block 7. The pusher 12 projects outwards relative to the hole 14 and it is supported by this place, by its end, against the internal face of the segment 6, that is to say that which faces the support block 7.
  • the other end of the pusher 12 is actuated in translation either by an adjustment eccentric 15 which can be rotated, in a manner known per se, by a joystick 16 for example, either by any other manual or motorized means.
  • the rotation of the eccentric 15, in one direction or the other consequently causes an axial sliding movement of the pusher 12 which thus pushes the segment more or less individual metering device 6 with which it is associated, in the direction of the ink cylinder 1.
  • the support block 7 is held pressed against the front face 9b of the rebate 9 of the body 2 by means of flanges 17 in the form of C.
  • the C-shaped flange 17 has a first branch 17b facing downwards, which is engaged and bears in the groove 21.
  • All of the pushers 13, of the block 7 and of the two metering units 6 are covered, at the top, by a plate 25 constituting the bottom of the inkwell and extending over the entire width of the latter.
  • This bottom 25 is fixed to the body 2 by means of screws not shown, and which preferably pass through holes drilled right through in the body, the heads of which are housed in the lower part of the body and the threaded parts of which are engaged in tapped holes provided in the underside of the bottom 25.
  • This bottom 25 has, at its end close to the ink cylinder 1, a rebate 25a open towards the bottom and which covers the upper edges 6 to individual dosing segments 6. This gives a perfect sealing between each dosing segment 6 and the bottom 25 of the inkwell, which prevents ink from entering the interior of the block 7 and in particular into the holes 14 through which the pushers 13 pass.
  • the seal is produced, as shown in FIGS. 3 and 4, by means of a deformable elastic blade 26 which is fixed, on the upper face of the support block 7, by means of screws or rivets 28.
  • This blade 26 normally extends, at rest, above all of the metering segments 6 and at a certain distance from the upper edges 6a thereof, thanks to the provision of a rebate 29 in the 'upper right corner of the support block 7.
  • the bottom 25 is extended towards the ink cylinder 1 by a projecting lip 31 which has, on its underside, a groove 32 delimiting, at the end of the lip 31 , a shoulder 33 turned downwards.
  • the common support block 7 is fixed, on which all the individual metering segments 6 and the blade 26 are mounted, on the body 2 and then the plate 25 constituting the bottom of the inkwell is fixed on the body 2.
  • the screws or rivets 28 ensuring the fixing of the blade 26 then come to engage in the groove 32 of the lip 31 and the shoulder 33 pushes the flexible blade 26 down. Therefore, as can be better seen in Figure 3, the blade 26 is curved and pushed down so that its end comes to bear on the upper edges 6a of the associated metering segments 6. Consequently when each of these edges 6a is more or less spaced from the front face 7a of the block 7, the blade 26 which rubs on the edge 6a, opposes any penetration of ink inside the block 7.
  • each of the segments 6 has, at its upper part, a protuberance 6a extending in the direction of the ink cylinder.
  • This protuberance is provided to separate as much as possible the zone where the sealing of the zone where the ink film is laminated 5 is made. In fact, in this latter zone there is a very high pressure and to reduce the risks of leakage towards the interior of the block 7 it is preferable to place the means ensuring the sealing in an area where the ink pressure is lower.
  • the seal is reinforced by the provision, in the rebate 25a, of a seal 34 in an appropriate deformable material. This lining is compressed by the upper edge 6a of each segment 6 and an improvement in sealing is thus obtained at this location.
  • the flexible blade 26 has, on its underside, a seal 35, made of deformable material, by which it comes to bear on the upper edges 6a of the individual segments 6 when it is pushed down as shown in the Figure 6.
  • This seal 35 contributes to improving the seal mainly in the areas where the individual segments 6 are found to be juxtaposed.

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

Abstract

An ink fountain, incorporating individually regulated metering segments, for a printing machine, comprises a vat containing ink and delimited, on one side, by a horizontal inking roller. The upper edges of the metering segments determine, with the peripheral surface of the inking roller, gaps of widths adjustable as a function of the thickness of the film of ink having to be formed on the inking roller. Regulating pusher elements are mounted to slide in a body and act respectively, at their ends, on the upper parts of the individual metering segments. Each metering segment is fixed on a front face of a common support block itself removably mounted on the body, this block being pierced, in its upper part, with holes through which extend the pusher elements acting on the segments and adapted to be dismantled jointly with segments which it bears.

Description

La présente invention concerne un encrier à segments doseurs réglés individuellement pour une imprimeuse.The present invention relates to an inkwell with metering segments individually adjusted for a printer.

On connaît déjà des encriers pour imprimeuse qui comportent un bac contenant de l'encre, ce bac étant délimité, d'un côté, par un cylindre encrier horizontal entraîné en rotation, du côté opposé, par un corps s'étendant parallèlement au cylindre encrier, et latéralement, par deux flasques verticaux. Le corps porte, à proximité immédiate de la surface périphérique du cylindre encrier, une lame de raclage parallèle au cylindre encrier et qui est formée par une succession de segments doseurs adjacents les uns aux autres et dont les chants supérieurs s'étendent parallèlement au cylindre encrier, à une faible distance de la surface périphérique de celui-ci, cette distance pouvant être réglée individuellement pour chaque segment doseur. Ces segments doseurs sont fixés au corps,'à leurs parties inférieures, au moyen de vis et ils sont actionnés individuellement par des poussoirs s'étendant à travers le corps et qui sont commandés, par exemple, par des manettes de réglage ou des ensembles motorisés. Ainsi il est possible, à l'aide de ces poussoirs , de placer la partie supérieure de chaque segment doseur individuel plus ou moins près de la surface périphérique du cylindre encrier et d'ajuster ainsi l'épaisseur du film d'encre passant entre l'e chant supérieur du segment doseur considéré et la surface périphériques du cylindre encrier. Un tel encrier est décrit par exemple dans la demande de brevet français N" 80 18 532.Inkwells for printing machines are already known which comprise a container containing ink, this container being delimited, on one side, by a horizontal ink cylinder driven in rotation, on the opposite side, by a body extending parallel to the ink cylinder , and laterally, by two vertical flanges. The body carries, in the immediate vicinity of the peripheral surface of the ink cylinder, a scraper blade parallel to the ink cylinder and which is formed by a succession of metering segments adjacent to each other and whose upper edges extend parallel to the ink cylinder , at a small distance from the peripheral surface thereof, this distance being adjustable individually for each dosing segment. These dosing segments are fixed to the body, at their lower parts, by means of screws and they are actuated individually by pushers extending through the body and which are controlled, for example, by adjusting levers or motorized assemblies. . Thus it is possible, using these pushers, to place the upper part of each individual dosing segment more or less close to the peripheral surface of the ink cylinder and thus to adjust the thickness of the ink film passing between the 'e upper edge of the metering segment considered and the peripheral surface of the ink cylinder. Such an inkwell is described for example in French patent application No. 80 18 532.

Les encriers de ce type présentent un certain nombre d'inconvénients surtout du point de vue entretien et rempla- * cement des segments doseurs. En effet lorsqu'il est nécessaire de démonter l'encrier, pour changer les segments doseurs par exemple, l'ensemble de l'encrier doit effectivement être démonté pour pouvoir avoir accès aux segments doseurs. Par ailleurs un changement de ces segments entraîne obligatoirement d'avoir à effectuer de nouveaux réglages des poussoirs commandant les segments individuels.Inkwells of this type have a certain number of drawbacks, especially from the point of view of maintenance and replacement of the metering segments. When it is necessary to dismantle the inkwell, to change the dosing segments for example, the entire inkwell must actually be dismantled in order to have access to the dosing segments. Furthermore, a change of these segments necessarily results in having to make new adjustments to the pushers controlling the individual segments.

La présente invention vise à remédier à ces inconvénients en procurant un encrier de conception particulièrement simple permettant un changement aisé et rapide des segments.The present invention aims to remedy these drawbacks by providing a particularly simple inkwell allowing easy and rapid change of the segments.

A cet effet cet encrier à segments doseurs réglés individuellement pour imprimeuse, comportant un bac contenant de l'encre et délimité, d'un côté, par un cylindre encrier horizontal et, de l'autre côté, par un corps s'étendant transversalement, ainsi que par deux flasques verticaux et latéraux, le corps de l'encrier portant, à proximité de la surface périphérique du cylindre encrier, une série de segments doseurs alignés parallèlement au cylindre encrier, et dont les chants supérieurs déterminent, avec la surface périphérique du cylindre encrier, des intervalles de largeurs réglables en fonction de l'épaisseur du film d'encre devant être formé sur le cylindre encrier, en aval de chaque segment doseur, des poussoirs de réglage montés à coulissement dans le corps, et agissant respectivement, à leurs extrémités, sur les parties supérieures des segments doseurs individuels, est caractérisé en ce que chaque segment doseur est fixé sur une face frontale d'un bloc support commun lui-même monté amovible sur le corps, ce bloc étant percé, dans sa partie supérieure, de trous, à travers lesquels s'étendent les poussoirs agissant sur les segments et pouvant être démonté conjointement avec les segments doseurs qu'il porte .To this end, this inkwell with metering segments individually adjusted for a printer, comprising a tray containing ink and delimited, on one side, by a horizontal ink cylinder and, on the other side, by a body extending transversely, as well as by two vertical and lateral flanges, the body of the inkwell carrying, near the peripheral surface of the ink cylinder, a series of metering segments aligned parallel to the ink cylinder, and the upper edges of which determine, with the peripheral surface of the ink cylinder, intervals of widths adjustable as a function of the thickness of the ink film to be formed on the ink cylinder, downstream of each metering segment, adjustment pushers mounted to slide in the body, and acting respectively, at their ends, on the upper parts of the individual dosing segments, is characterized in that each dosing segment is fixed to a front face of a common support block itself mounted removable on the body, this block being pierced, in its upper part, with holes, through which extend the pushers acting on the segments and which can be dismantled together with the metering segments which it carries.

L'encrier suivant l'invention offre l'avantage que lorsque l'on désire nettoyer, changer ou rectifier les segments doseurs, il suffit de démonter dans son ensemble le bloc support commun lequel peut être ensuite remonté sur le -corps de l'encrier, sans qu'il soit nécessaire de refaire les réglages des positions des poussoirs agissant sur les segments doseurs. Par ailleurs du fait que tous les segments individuels sont montés en commun sur un jméme support en consituant un ensemble peu onéreux à fabriquer et récupérable, l'encrier suivant l'invention permet également de le monter sans jeux entre segments car il est possible ensuite d'usiner l'ensemble à la fois dans le sens de la longueur et de la hauteur, pour mettre l'ensemble des segments à la longueur voulue, et ce quelles que soient les tolérances des segments individuels, à condition , naturellement,que les variations de cotes ne soient pas trop élevées .The inkwell according to the invention has the advantage that when it is desired to clean, change or rectify the dosing segments, it suffices to dismantle the whole common support block which can then be reassembled on the body of the inkwell , without the need to redo the settings of the positions of the pushers acting on the metering segments. Furthermore, since all the individual segments are mounted in common on the same support by constituting an inexpensive and recoverable assembly, the inkstand according to the invention also makes it possible to mount it without play between segments because it is then possible to '' machine the assembly both lengthwise and vertically, to bring all the segments to the desired length, whatever the tolerances of the individual segments, provided, of course, that the variations in dimensions are not too great.

A sa partie supérieure le bloc support commun vient se loger sous une plaque constituant le fond de l'encrier et à cet endroit l'étanchéité est assurée soit par contact direct entre le chant supérieur de chaque segment doseur et une face inférieure extrême de ce fond, soit par suite de la prévision d'une lame-déformable fixée sur la face supérieure du bloc et s'étendant au-dessus des segments doseurs individuels.At its upper part, the common support block is housed under a plate constituting the bottom of the inkwell and at this point sealing is ensured either by direct contact between the upper edge of each metering segment and an extreme lower face of this bottom. , or as a result of the provision of a deformable blade fixed on the upper face of the block and extending above the individual metering segments.

On décrira ci-après,à titre d'exemples non limitatifs, diverses formes d'exécution de la présente invention, en référence au dessin annexé sur lequel :

  • La figure 1 est une vue en coupe verticale perpendiculairement à l'axe du cylindre encrier.
  • La figure 2 est une vue en coupe faite suivant la ligne II-II de la figure 1.
  • La figure 3 est une vue en coupe verticale partielle, à plus grande échelle, de la partie supérieure du bloc support commun, suivant une variante d'exécution, ce bloc support étant représenté fixé sur 1e corps de l'encrier.
  • La figure 4 est une vue en coupe semblable à celle de la figure 3; le bloc support commun étant représenté écarté du fond de l'encrier.
  • La figure 5 est une vue en coupe verticale partielle, à plus grande échelle, d'une variante d'exécution du dispositif assurant l'étanchéité à l'endroit des chants supérieurs des segments.
  • La figure 6 est une vue en coupe verticale partielle d'une autre variante d'exécution du dispositif assurant l'étanchéité à l'endroit des chants supérieurs des segments.
  • La figure 7 est une vue en coupe verticale partielle du dispositif de la figure 6, avant la mise en place de la plaque constituant le fond de l'encrier.
Various embodiments of the present invention will be described below, by way of non-limiting examples, with reference to the appended drawing in which:
  • Figure 1 is a vertical sectional view perpendicular to the axis of the ink cylinder.
  • Figure 2 is a sectional view taken along line II-II of Figure 1.
  • Figure 3 is a partial vertical sectional view, on a larger scale, of the upper part of the common support block, according to an alternative embodiment, this support block being shown fixed on the body of the inkwell.
  • Figure 4 is a sectional view similar to that of Figure 3; the common support block being shown separated from the bottom of the inkwell.
  • Figure 5 is a partial vertical sectional view, on a larger scale, of an alternative embodiment of the device sealing at the location of the upper edges of the segments.
  • Figure 6 is a partial vertical sectional view of another alternative embodiment of the device sealing at the location of the upper edges of the segments.
  • Figure 7 is a partial vertical sectional view of the device of Figure 6, before the establishment of the plate constituting the bottom of the inkwell.

L'encrier suivant l'invention qui est représenté sur le dessin comprend un cylindre encrier 1 entraîné en rotation dans le sens de la flèche f, c'est-à-dire dans le sens inverse des aiguilles d'une montre, un corps 2 s'étendant parallèlement à l'axe du cylindre 1 et deux flasques latéraux et verticaux 3. Le cylindre 1, le corps 2 des deux flasques 3 constituent un bac contenant une réserve d'encre 4 destinée à former, sur la surface périphérique du cylindre encrier 1, un film 5 d'épaisseur réglable.The inkwell according to the invention which is shown in the drawing comprises an ink cylinder 1 rotated in the direction of the arrow f, that is to say in the direction anticlockwise, a body 2 extending parallel to the axis of the cylinder 1 and two lateral and vertical flanges 3. The cylinder 1, the body 2 of the two flanges 3 constitute a container containing an ink reserve 4 intended to form, on the peripheral surface of the ink cylinder 1, a film 5 of adjustable thickness.

L'encrier comporte, pour le réglage de l'épaisseur du film 5, une succession de segments doseurs individuels 6 qui sont sensiblement coplanaires et sont juxtaposés les uns aux autres suivant une direction parallèle à l'axe du cylindre encrier 1, en formant en quelque sorte une lame râcleu- se. Chacun de ces segments doseurs individuels 6 est constitué par une plaquette qui est fixée sur un bloc support commun 7, et ce au moyen de vis 8 traversant des trous per7 cés dans les segments doseurs 6 et vissés dans des trous taraudés prévus dans la face frontale 7a du bloc support 7. Chaque segment doseur 6 présente, à sa partie supérieure, une protubérance 6b en direction du cylindre encrier.The inkwell comprises, for adjusting the thickness of the film 5, a succession of individual metering segments 6 which are substantially coplanar and are juxtaposed to each other in a direction parallel to the axis of the ink cylinder 1, forming in somehow a scraping blade. Each of these individual dosing segments 6 is constituted by a plate which is fixed to a common support block 7, by means of screws 8 passing through holes drilled in the dosing segments 6 and screwed into tapped holes provided in the front face. 7a of the support block 7. Each dosing segment 6 has, at its upper part, a protuberance 6b in the direction of the ink cylinder.

Le bloc support 7 se présente sous une forme parallélépipédique et il est fixé sur le corps 2 et plus particulièrement dans une feuillure 9 de celui-ci, au moyen de vis 11. La feuillure 9 comporte une face d'appui inférieure 9a et une face frontale perpendiculaire 9b contre laquelle est plaqué le bloc support 7.The support block 7 is in the form of a parallelepiped and it is fixed to the body 2 and more particularly in a rebate 9 thereof, by means of screws 11. The rebate 9 has a lower bearing face 9a and a face perpendicular front 9b against which the support block 7 is pressed.

Chacun des segments doseurs 6 forme en quelque sorte une lame flexible fixée à son extrémité inférieure (ou ailleurs) et sa partie supérieure mobile qui est proche de la surface périphérique du cylindre encrier 1, est actionnée par un poussoir de réglage 12. Chaque poussoir 12 est monté à coulissement dans un trou 13 percé dans le corps 2 et dans un trou coaxial 14 percé dans la partie supérieure du bloc support commun 7. Le poussoir 12 fait saillie vers l'extérieur par rapport au trou 14 et il prend appui à cet endroit, par son extrémité, contre la face interne du segment 6, c'est-à-dire celle qui est tournée vers le bloc support 7. L'autre extrémité du poussoir 12 est actionnée en translation soit par un excentrique de réglage 15 qui peut être entraîné en rotation, d'une manière connue en soi, par une manette 16 par exemple,soit par tout autre moyen manuel ou motorisé.La rotation de l'excentrique 15, dans un sens ou dans l'autre, provoque par conséquent un mouvement de coulissement axial du poussoir 12 qui repousse ainsi plus ou moins le segment doseur individuel 6 auquel il est associé, en direction du cylindre encrier 1. De cette façon il est possible d'ajuster l'intervallle délimité entre le chant supérieur 6a du segment individuel 6 et la surface périphérique du cylindre encrier 1, et de régler par conséquent l'épaisseur du film d'encre 5.Each of the metering segments 6 forms in a way a flexible blade fixed at its lower end (or elsewhere) and its movable upper part which is close to the peripheral surface of the ink cylinder 1, is actuated by an adjustment pusher 12. Each pusher 12 is slidably mounted in a hole 13 drilled in the body 2 and in a coaxial hole 14 drilled in the upper part of the common support block 7. The pusher 12 projects outwards relative to the hole 14 and it is supported by this place, by its end, against the internal face of the segment 6, that is to say that which faces the support block 7. The other end of the pusher 12 is actuated in translation either by an adjustment eccentric 15 which can be rotated, in a manner known per se, by a joystick 16 for example, either by any other manual or motorized means. The rotation of the eccentric 15, in one direction or the other, consequently causes an axial sliding movement of the pusher 12 which thus pushes the segment more or less individual metering device 6 with which it is associated, in the direction of the ink cylinder 1. In this way it is possible to adjust the interval defined between the upper edge 6a of the individual segment 6 and the peripheral surface of the ink cylinder 1, and to adjust by therefore the thickness of the ink film 5.

A sa partie supérieure le bloc support 7 est maintenu plaqué contre la face frontale 9b de la feuillure 9 du corps 2 au moyen de brides 17 en forme de C. Chacune de ces brides 17 comporte une âme 17a qui est serrée au moyen d'une vis 18 vissée perpendiculairement dans un épaulement 19 formé dans le corps 2, entre la f=ace frontale 9a de la feuillure 9 et une rainure 21 formée dans le corps 2, débouchant dans la face supérieure de celui-ci et s'étendant parallèlement à la face frontale 9b. La bride 17 en forme de C présente une première branche 17b tournée vers le bas, qui est engagée et prend appui dans la rainure 21. Elle comporte également une seconde branche externe 17c, tournée vers le bas, et qui est engagée dans une rainure 22 ménagée dans le bloc support commun 7 et plus particulièrement dans l'angle d'une feuillure prévue dans la partie supérieure gauche de celui-ci. Cette rainure 22 délimite, avec la face externe du bloc 7 qui est plaquée contre la face frontale 9b, un épaulement 23 auquel elle est reliée par une face inclinée 24. De la même façon la branche 17c de la bride 17 est reliée à son âme 17a par une rampe inclinée 17d de même pente que la face inclinée 24, afin d'encaisser l'effort dû au cambrage des segments par les poussoirs 12. On voit donc que, lorsque l'on serre chaque bride 17 aq moyen de la vis 18, la coopération des faces inclinées 17d et 23 provoque un serrage du bloc support 7 contre la face frontale 9b de la feuillure 9.At its upper part, the support block 7 is held pressed against the front face 9b of the rebate 9 of the body 2 by means of flanges 17 in the form of C. Each of these flanges 17 comprises a core 17a which is tightened by means of a screw 18 screwed perpendicularly into a shoulder 19 formed in the body 2, between the front f = ace 9a of the rebate 9 and a groove 21 formed in the body 2, opening into the upper face thereof and extending parallel to the front face 9b. The C-shaped flange 17 has a first branch 17b facing downwards, which is engaged and bears in the groove 21. It also has a second external branch 17c, facing downwards, and which is engaged in a groove 22 formed in the common support block 7 and more particularly in the corner of a rebate provided in the upper left part thereof. This groove 22 delimits, with the external face of the block 7 which is pressed against the front face 9b, a shoulder 23 to which it is connected by an inclined face 24. In the same way the branch 17c of the flange 17 is connected to its core 17a by an inclined ramp 17d of the same slope as the inclined face 24, in order to absorb the force due to the bending of the segments by the pushers 12. It can therefore be seen that, when each clamp 17 aq is tightened by means of the screw 18, the cooperation of the inclined faces 17d and 23 causes the support block 7 to be tightened against the front face 9b of the rebate 9.

L'ensemble des poussoirs 13, du bloc 7 et des seg- nents doseurs 6 est recouvert, à la partie supérieure, par une plaque 25 constituant le fond de l'encrier et s'étendant sur toute la largeur de celui-ci. Ce fond 25 est fixé au corps 2 au moyen de vis non représentées, et qui traversent de préférence des trous percés de part en part dans le corps, dont les têtes sont logées dans la partie inférieure du corps et dont les parties filetées sont engagées dans des trous taraudés prévus dans la face inférieure du fond 25. Ce fond 25 présente, à son extrémité proche du cylindre encrier 1, une feuillure 25a ouverte vers le bas et qui coiffe les chants supérieurs 6à des segments doseurs individuels 6. On obtient ainsi une étanchéité parfaite entre chaque segment doseur 6 et le fond 25 de l'encrier, ce qui évite que de l'encre ne pénètre à l'intérieur du bloc 7 et en particulier dans les trous 14 traversés par les poussoirs 13.All of the pushers 13, of the block 7 and of the two metering units 6 are covered, at the top, by a plate 25 constituting the bottom of the inkwell and extending over the entire width of the latter. This bottom 25 is fixed to the body 2 by means of screws not shown, and which preferably pass through holes drilled right through in the body, the heads of which are housed in the lower part of the body and the threaded parts of which are engaged in tapped holes provided in the underside of the bottom 25. This bottom 25 has, at its end close to the ink cylinder 1, a rebate 25a open towards the bottom and which covers the upper edges 6 to individual dosing segments 6. This gives a perfect sealing between each dosing segment 6 and the bottom 25 of the inkwell, which prevents ink from entering the interior of the block 7 and in particular into the holes 14 through which the pushers 13 pass.

Suivant une variante de réalisation, l'étanchéité est réalisée, ainsi qu'il est représenté sur les figures 3 et 4, au moyen d'une lame élastique déformable 26 qui est fixée, sur la face supérieure du bloc support 7, au moyen de vis ou rivets 28. Cette lame 26 s'étend normalement, au repos, au-dessus de tous les segments doseurs 6 et à une certaine distance des chants supérieurs 6a de ceux-ci, grâce à la prévision d'une feuillure 29 dans l'angle supérieur droit du bloc support 7. De son côté le fond 25 est prolongé en direction du cylindre encrier 1 par une lèvre en saillie 31 qui présente, sur sa face inférieure, une rainure 32 délimitant, à l'extrémité de la lèvre 31, un épaulement 33 tourné vers le bas.According to an alternative embodiment, the seal is produced, as shown in FIGS. 3 and 4, by means of a deformable elastic blade 26 which is fixed, on the upper face of the support block 7, by means of screws or rivets 28. This blade 26 normally extends, at rest, above all of the metering segments 6 and at a certain distance from the upper edges 6a thereof, thanks to the provision of a rebate 29 in the 'upper right corner of the support block 7. On its side the bottom 25 is extended towards the ink cylinder 1 by a projecting lip 31 which has, on its underside, a groove 32 delimiting, at the end of the lip 31 , a shoulder 33 turned downwards.

Pour le montage on fixe le bloc support commun 7, sur lequel sont montés tous les segments doseurs individuels 6 et la lame 26, sur le corps 2 puis on fixe sur le corps 2 la plaque 25 constituant le fond de l'encrier. Les vis ou rivets 28 assurant la fixation de la lame 26 viennent alors s'engager dans la rainure 32 de la lèvre 31 et l'épaulement 33 repousse la lame flexible 26 vers le bas. De ce fait, comme on peut mieux le voir sur la figure 3, la lame 26 est incurvée et repoussée vers le bas de manière que son extrémité vienne prendre appui sur les chants supérieurs 6a des segments doseurs associés 6. Par conséquent lorsque chacun de ces chants 6a est plus ou moins écarté de la face frontale 7a du bloc 7, la lame 26 qui frotte sur le chant 6a, s'oppose à toute pénétration d'encre à l'intérieur du bloc 7.For mounting, the common support block 7 is fixed, on which all the individual metering segments 6 and the blade 26 are mounted, on the body 2 and then the plate 25 constituting the bottom of the inkwell is fixed on the body 2. The screws or rivets 28 ensuring the fixing of the blade 26 then come to engage in the groove 32 of the lip 31 and the shoulder 33 pushes the flexible blade 26 down. Therefore, as can be better seen in Figure 3, the blade 26 is curved and pushed down so that its end comes to bear on the upper edges 6a of the associated metering segments 6. Consequently when each of these edges 6a is more or less spaced from the front face 7a of the block 7, the blade 26 which rubs on the edge 6a, opposes any penetration of ink inside the block 7.

Comme on l'a vu précédemment, chacun des segments 6 présente, à sa partie supérieure, une protubérance 6a s'étendant en direction du cylindre encrier. Cette protubérance est prévue pour écarter le plus possible la zone où est réalisée l'étanchéité de la zone où s'effectue le laminage du film d'encre 5. En effet, dans cette dernière zone règne une pression très élevée et pour réduire les risques de fuite vers l'intérieur du bloc 7 il est préférable de placer les moyens assurant l'étanchéité dans une zone où la pression de l'encre est plus faible.As seen above, each of the segments 6 has, at its upper part, a protuberance 6a extending in the direction of the ink cylinder. This protuberance is provided to separate as much as possible the zone where the sealing of the zone where the ink film is laminated 5 is made. In fact, in this latter zone there is a very high pressure and to reduce the risks of leakage towards the interior of the block 7 it is preferable to place the means ensuring the sealing in an area where the ink pressure is lower.

La disposition précitée n'est toutefois pas limitative. On pourrait en effet concevoir d'autres variantes d'exécution telles que par exemple celle comportant des segments 6 de plus forte épaisseur, en un matériau suffisamment flexible et élastique pour permettre de rapprocher plus ou moins l'extrémité supérieure de chaque segment 6 de la surface périphérique du cylindre encrier 1.The above provision is not, however, limiting. One could in fact design other alternative embodiments such as, for example, that comprising segments 6 of greater thickness, made of a sufficiently flexible and elastic material to allow the upper end of each segment 6 to be brought closer or closer to the ink cylinder peripheral surface 1.

Dans la variante d'exécution illustrée sur la figure 5 l'étanchéité est renforcée grâce à la prévision, dans la feuillure 25a, d'une garniture d'étanchéité 34 en un matériau déformable approprié. Cette garniture est comprimée par le chant supérieur 6a de chaque segment 6 et on obtient ainsi une amélioration de l'étanchéité à cet endroit.In the alternative embodiment illustrated in FIG. 5, the seal is reinforced by the provision, in the rebate 25a, of a seal 34 in an appropriate deformable material. This lining is compressed by the upper edge 6a of each segment 6 and an improvement in sealing is thus obtained at this location.

Dans la forme d'exécution illustrée sur les figures 6 et 7, qui correspond à une variante de celle représentée sur les figures 3 et 4, la lame flexible 26iprésente, sur sa face inférieure, une garniture d'étanchéité 35, en matériau déformable, par laquelle elle vient prendre appui sur les chants supérieurs 6a des segments individuels 6 lorsqu'elle est repoussée vers le bas comme il est représenté sur la figure 6. Cette garniture d'étanchéité 35 contribue à améliorer l'étanchéité principalement dans les zones où les segments individuels 6 se trouvent être juxtaposés.In the embodiment illustrated in FIGS. 6 and 7, which corresponds to a variant of that shown in FIGS. 3 and 4, the flexible blade 26 has, on its underside, a seal 35, made of deformable material, by which it comes to bear on the upper edges 6a of the individual segments 6 when it is pushed down as shown in the Figure 6. This seal 35 contributes to improving the seal mainly in the areas where the individual segments 6 are found to be juxtaposed.

Claims (10)

1- Encrier à segments doseurs réglés individuellement pour imprimeuse, comportant un bac contenant de l'encre et délimité, d'un côté, par un cylindre encrier horizontal et, de l'autre côté, par un corps s'étendant transversalement, ainsi que par deux flasques verticaux et latéraux, le corps de l'encrier portant, à proximité de la surface périphérique du cylindre encrier, une série de segments doseurs alignés, parallèlement au cylindre encrier, et dont les chants supérieurs déterminent, avec la surface périphérique du cylindre encrier, des intervalles de largeurs réglables en fonction de l'épaisseur du film d'encre devant être formé sur le cylindre encrier, en aval de chaque segment doseur, des poussoirs de réglage montés à coulissement dans le corps, et agissant respectivement, à leurs extré- mités, sur les parties supérieures des segments doseurs individuels, caractérisé en ce que chaque segment doseur (6) est fixé sur une face frontale (7a) d'un bloc support commun (7) lui-même monté amovible sur le corps (2), ce bloc (7) étant percé, dans sa partie supérieure, de trous (14) à travers lesquels s'étendent les poussoirs (12) agissant sur les segments et pouvant être démonté conjointement avec les segments doseurs (6) qu'il porte.1- Inkwell with metering segments individually adjusted for a printer, comprising a tray containing ink and bounded, on one side, by a horizontal ink cylinder and, on the other side, by a body extending transversely, as well as by two vertical and lateral flanges, the body of the inkwell carrying, near the peripheral surface of the ink cylinder, a series of metering segments aligned, parallel to the ink cylinder, and the upper edges of which determine, with the peripheral surface of the cylinder inkwell, intervals of widths adjustable as a function of the thickness of the ink film to be formed on the ink cylinder, downstream of each metering segment, adjustment pushers mounted to slide in the body, and acting respectively, at their ends, on the upper parts of the individual metering segments, characterized in that each metering segment (6) is fixed to a front face (7a) of a common support block (7) which is itself mounted removable on the body (2), this block (7) being pierced, in its upper part, with holes (14) through which extend the pushers (12) acting on the segments and which can be dismantled together with the metering segments (6) he wears. 2.- Encrier suivant la revendication 1 caractérisé en ce que le bloc support commun (7) a une formede préférence parallélépipédique.2. Inkwell according to claim 1 characterized in that the common support block (7) has a preferably rectangular shape. 3.- Encrier suivant la revendication 2 caractérisé en ce que le bloc support commun (7) est monté amovible dans une feuillure (9) du corps (2), cette feuillure comportant une face d'appui inférieure (9a) et une face frontale perpendiculaire (9b) contre laquelle est plaqué le bloc support (7).3. Inkwell according to claim 2 characterized in that the common support block (7) is removably mounted in a rebate (9) of the body (2), this rebate comprising a lower bearing face (9a) and a front face perpendicular (9b) against which the support block (7) is pressed. 4.- Encrier suivant la revendication 3 caractérisé en ce que le bloc support (7) est maintenu plaqué contre la face frontale inclinée (9b) de la feuillure (9) du corps (2) au moyen de brides (17) en forme de C, chacune de ces brides (17) comportant une âme (17a) qui est serrée au moyen d'une vis (18) vissée perpendiculairement dans un épaulement (19) formé dans le corps (2), entre la face frontale (9a) de la feuillure (9) et une rainure (21) formée dans le corps (2), débouchant dans la face supérieure de celui-ci et s'étendant parallèlement à la face frontale (9b), chaque bride (17) présentant par ailleurs une première branche (17b) tournée vers le bas, qui est engagée et prend appui dans la rainure (21), et une seconde branche externe (17c), tournée vers le bas et qui est engagée dans une rainure (22) ménagée dans le bloc support commun (7) et plus particulièrement dans l'angle d'une feuillure prévue dans celui-ci, cette rainure (22) délimitant, avec la face externe du bloc (7) qui est plaquée contre la face frontale (9b), un épaulement (23) auquel elle est reliée par une face inclinée (24), la seconde branche externe (7c) de la bride (17) étant reliée à son âme (17a) par une rampe inclinée (17d) de même pente que la face inclinée (24).4. Inkwell according to claim 3 characterized in that the support block (7) is kept pressed against the inclined front face (9b) of the rebate (9) of the body (2) by means of flanges (17) in the form of C, each of these flanges (17) comprising a core (17a) which is tightened by means of a screw (18) screwed perpendicularly into a shoulder (19) formed in the body (2), between the front face (9a) of the rebate (9) and a groove (21) formed in the body (2), opening into the upper face thereof and extending parallel to the front face (9b), each flange (17) moreover having a first branch (17b) facing downwards, which is engaged and bears in the groove (21), and a second external branch (17c), facing the bottom and which is engaged in a groove (22) formed in the common support block (7) and more particularly in the corner of a rebate provided therein, this groove (22) delimiting, with the external face of the block (7) which is pressed against the front face (9b), a shoulder (23) to which it is connected by an inclined face (24), the second external branch (7c) of the flange (17) being connected to its core (17a) by an inclined ramp (17d) of the same slope as the inclined face (24). 5.- Encrier suivant l'une quelconque des revendications précédentes caractérisé en ce que l'ensemble des poussoirs (13), du bloc support commun (7) et des segments doseurs (6) est recouvert, à sa partie supérieure, par une plaque (25) consituant le fond de l'encrier et s'étendant sur toute la largeur de celui-ci, cette plaque (25) constituant le fond étant fixée au corps (2) au moyen de vis.5. Inkwell according to any one of the preceding claims, characterized in that all of the pushers (13), of the common support block (7) and of the metering segments (6) is covered, at its upper part, by a plate (25) constituting the bottom of the inkwell and extending over the entire width of the latter, this plate (25) constituting the bottom being fixed to the body (2) by means of screws. 6.- Encrier suivant la revendication 5 caractérisé en ce que la plaque formant le fond (25) présente, à son extrémité proche du cylindre encrier (1), une feuillure (25a) ouverte vers le bas et qui est en contact avec les chants supérieurs (6a) des segments doseurs individuels (6).6. Inkwell according to claim 5 characterized in that the plate forming the bottom (25) has, at its end close to the ink cylinder (1), a rebate (25a) open at the bottom and which is in contact with the edges upper (6a) of the individual dosing segments (6). 7.- Encrier suivant la revendication 6 caractérisé .en ce que la feuillure (25a) porte une garniture d'étanchéité (34) qui est en contact avec les chants supérieurs (6a) des segments doseurs individuels (6).7. Inkwell according to claim 6 characterized .in that the rebate (25a) carries a seal (34) which is in contact with the upper edges (6a) of the individual metering segments (6). 8.- Encrier suivant la revendication 5 caractérisé en ce que la plaque formant le fond (25) de l'encrier est prolongée, en direction du cylindre encrier (1), par une lèvre en saillie (31) qui présente, sur sa face inférieure, une rainure (32) délimitant, à l'extrémité de la lèvre (31), un épaulement (33) dirigé vers le bas, et une lame élastique déformable (26) est fixée , sur la face supérieure du bloc support commun (7), cette lame (26) s'étendant normalement, au repos, au-dessus des segments doseurs (6) et à une certaine distance des chants supérieurs (6a) de ceux-ci, par suite de la prévision d'une feuillure (29) dans l'angle supérieur du bloc support (7), si bien que, lorsque la plaque (25) constituant le fond de l'encrier est appliquée contre le corps (2) et le bloc support commun (7) qui lui est fixé, l'épaulement (33) de la lèvre (31) repousse la lame flexible (26) vers le bas et cetté lame vient prendre appui, par son extrémité, sur le chant supérieur (6a) du segment doseur associé (6) assurant ainsi l'étanchéité.8. Inkwell according to claim 5 characterized in that the plate forming the bottom (25) of the inkwell is extended, in the direction of the inkwell cylinder (1), by a projecting lip (31) which has, on its face lower, a groove (32) delimiting, at the end of the lip (31), a shoulder (33) directed downwards, and an elas blade deformable tick (26) is fixed on the upper face of the common support block (7), this blade (26) extending normally, at rest, above the metering segments (6) and at a certain distance from the upper edges (6a) thereof, as a result of the provision of a rebate (29) in the upper corner of the support block (7), so that when the plate (25) constituting the bottom of the inkwell is applied against the body (2) and the common support block (7) which is attached to it, the shoulder (33) of the lip (31) pushes the flexible blade (26) down and this blade comes to bear, by its end, on the upper edge (6a) of the associated metering segment (6) thus ensuring sealing. 9.- Encrier suivant la revendication 8 caractérisé en ce que la lame flexible (26) porte, sur sa face inférieure, une garniture d'étanchéité (35), en matériau déformable; par laquelle elle prend appui sur les chants supérieurs (6a) des segments (6).9. Inkwell according to claim 8 characterized in that the flexible blade (26) carries, on its underside, a seal (35), of deformable material; by which it rests on the upper edges (6a) of the segments (6). 10.- Encrier suivant l'une quelconque des revendications précédentes caractérisé en ce que chacun des segments doseurs individuels (6) présente, à sa partie supérieure, une protubérance (6b) dirigée vers le cylindre encrier (1).10. Inkwell according to any one of the preceding claims, characterized in that each of the individual metering segments (6) has, at its upper part, a protuberance (6b) directed towards the ink cylinder (1).
EP84400255A 1983-02-08 1984-02-07 Inking unit for a printing machine, with individually adjustable metering segments Expired EP0117190B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400255T ATE23486T1 (en) 1983-02-08 1984-02-07 INKING UNIT WITH INDIVIDUALLY ADJUSTED DOSING SEGMENTS FOR A PRINTING PRESS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8301945A FR2540434A1 (en) 1983-02-08 1983-02-08 INPUT SEGMENTS DOSERS RULES INDIVIDUALLY FOR AN PRINTER
FR8301945 1983-02-08

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EP0117190A1 true EP0117190A1 (en) 1984-08-29
EP0117190B1 EP0117190B1 (en) 1986-11-12

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US (1) US4479434A (en)
EP (1) EP0117190B1 (en)
JP (1) JPS59192572A (en)
AT (1) ATE23486T1 (en)
DE (1) DE3461258D1 (en)
FR (1) FR2540434A1 (en)

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EP0195727A1 (en) * 1985-03-22 1986-09-24 MACHINES CHAMBON Société anonyme dite: Inking unit with independently adjustable ink measuring sections
FR2579136A1 (en) * 1985-03-22 1986-09-26 Chambon Machines INPUT SEGMENTS DOSERS RULES INDIVIDUALLY FOR AN PRINTER
US4711176A (en) * 1985-03-22 1987-12-08 Machines Chambon Ink fountain incorporating individually regulated metering segments

Also Published As

Publication number Publication date
FR2540434A1 (en) 1984-08-10
US4479434A (en) 1984-10-30
FR2540434B1 (en) 1985-05-03
DE3461258D1 (en) 1987-01-02
JPH0354627B2 (en) 1991-08-20
JPS59192572A (en) 1984-10-31
ATE23486T1 (en) 1986-11-15
EP0117190B1 (en) 1986-11-12

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