EP0395911B1 - Dispositif d'étanchéité pour une imprimante offset - Google Patents

Dispositif d'étanchéité pour une imprimante offset Download PDF

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Publication number
EP0395911B1
EP0395911B1 EP90106638A EP90106638A EP0395911B1 EP 0395911 B1 EP0395911 B1 EP 0395911B1 EP 90106638 A EP90106638 A EP 90106638A EP 90106638 A EP90106638 A EP 90106638A EP 0395911 B1 EP0395911 B1 EP 0395911B1
Authority
EP
European Patent Office
Prior art keywords
sealing
sealing element
roller
face
rollers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90106638A
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German (de)
English (en)
Other versions
EP0395911A3 (fr
EP0395911A2 (fr
Inventor
Martin Greive
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0395911A2 publication Critical patent/EP0395911A2/fr
Publication of EP0395911A3 publication Critical patent/EP0395911A3/fr
Application granted granted Critical
Publication of EP0395911B1 publication Critical patent/EP0395911B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/086—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
    • B05C1/0865—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith the cooperating element being a roller, e.g. a coating roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/26—Damping devices using transfer rollers

Definitions

  • the invention relates to a sealing arrangement for each end of a pair of rollers of a dampening unit of an offset printing press, the pair of rollers comprising an operationally rotating first roller in the form of a dampening solution applicator roller and an operationally rotating second roller in the form of a metering roller which is employed in a contact zone on the first roller is formed, the directions of rotation of the two rollers in the contact zone result in downward vectors of the peripheral speeds of the two rollers, a reservoir for a fountain solution is provided in the form of a channel formed from a gusset located above the contact zone between the two rollers, the respective ends of which by means of a respective sealing arrangement are completed, a respective sealing arrangement has a sealing element and a holder receiving it, the respective sealing element has a flat first sealing surface and a In a region of a respective end face of the first roller starting from the contact zone, by means of a first end face of a respective sealing element, a curved second sealing surface is formed which adjoins the first sealing surface
  • a sealing element which consists of resilient sealing material, is attached to both end faces of the metering roller and the applicator roller.
  • the sealing element also consists of a storage plate in which the resilient sealing material is received. The storage plate is held in an upwardly open guide and can be pulled out in this direction for the purpose of replacement. The position is secured by locking projections that snap into corresponding locking recesses in the storage plate.
  • EP 0 047 350 B1 has disclosed a sealing arrangement with the features mentioned at the beginning with respect to a dampening unit.
  • the sealing element accommodated in the holder is biased both axially and radially by spring loading. Sealing takes place in two directions, ie with respect to one direction on the end face of the application roller and with respect to the other direction on the outer surface of the metering roller.
  • the design of this known sealing arrangement is unsatisfactory, particularly with regard to the need to replace the sealing element designed as a wearing part.
  • an upper edge region of the sealing element is acted upon by a support spring, which rests on an angled portion that adjoins the upper one Edge area of the sealing element overlaps, supports. This affects accessibility and complicates the exchange work, which proves to be time-consuming.
  • the object of the invention is to design a generic sealing arrangement in such a way that an easy-to-use replacement of the sealing element is possible.
  • the holder leaves a pivoting path for the sealing element from a sealing position into a ready-for-removal position.
  • the sealing element can be pivoted into the ready-for-removal position by rotating it around the second roller.
  • Assembly and subsequent replacement of the sealing element can be carried out extremely simply.
  • Necessary retaining projections are not formed in an area that the sealing element sweeps over when pivoting around the second roller.
  • the sealing element has a freely accessible extension.
  • the invention makes use of the frictional force between the flat first sealing surface of the sealing element and the end face of the first roller which cooperates with this sealing surface.
  • the second roller is used as a kind of "pivot". The frictional force always holds the holding projection in a working position in which the sealing element is set against the second roller.
  • the sealing element can leave its sealing position with respect to the metering roller as a result of a frictional force acting on its first sealing surface.
  • the sealing element is provided with a securing part which prevents it from pivoting against the direction of rotation of the second roller and which is held under the action of a spring force in a respective blocking position corresponding to a sealing position of the sealing element and manually overcome by overcoming the spring force an unlocked position is displaceable.
  • the securing part is also arranged to be movable and thus follows wear-induced migration of the sealing element. It is further provided that a wedge is formed on the securing part and the wedge is held in the locked position by means of a spring arrangement in contact with a second end face of the sealing element on the one hand opposite the curved second sealing surface and on the other hand with a cam which is stationary with respect to the dampening unit formed wedge angle opens in the direction of rotation of the second roller.
  • the wedge-shaped design enables the aforementioned movable arrangement of the securing part in a simple manner. Characterized in that a wedge surface of the wedge cooperates with a fixed cam, the securing part can automatically readjust even with a rotational movement caused by wear. It is understood that the cam has a rounded with this a cooperating circumferential region.
  • the securing part is held in a locked position by means of a leg which engages in a groove of a spring arrangement supported on a bearing plate.
  • the spring arrangement provided always ensures the positive engagement of the securing part on the sealing element even when the sealing element migrates due to wear.
  • the groove formed in the securing part facilitates the establishment of an operative connection of the spring arrangement with the securing part when it is inserted into the dampening unit. A spring leg acting on the securing part can be caught as it were by means of the groove.
  • the securing part moves out of a blocking position along a guide slot formed therein an unlocked position and vice versa is articulated on a bearing plate.
  • a wedge surface of the wedge which is in contact with the cam at least in a locked position, represents a longitudinal side of a guide slot formed in the securing part and penetrated by the cam, by means of which the securing part is articulated on a bearing plate from a locked position into an unlocked position and vice versa.
  • a particularly simple manufacture and a shape of the securing part which is advantageous in terms of handling results with an embodiment in which a first wedge surface and a second wedge surface opposite this are formed by means of respective boundary surfaces of a plate-shaped securing part, the plate-shaped securing part between a bearing plate and an end face opposite this the first roller is arranged and an end of the plate-shaped securing part located in a direction in which the wedge tapers extends beyond the bearing plate at least in a locked position of the securing part and has a projection pointing in a longitudinal direction of the pair of rollers, by means of which the securing part on the bearing plate is supported.
  • the sealing element is released for pivoting about the intended pivoting path and for removal from the dampening unit by manually moving the securing part against the action of the spring arrangement and along the guide slot.
  • a gap is created between it and the sealing element in the sealing position. This gap then enables the sealing element to pivot in its readiness for removal.
  • the sealing element is removed and the securing part is left to itself, this is intercepted by means of the protrusion formed thereon on the adjacent bearing plate, so that the securing part does not fall into a gap provided for its installation between this bearing plate and the end faces of the two rollers and is no longer accessible .
  • the projection preferably projects above a respective plate surface of the plate-shaped securing part.
  • this has particular advantages in terms of production technology.
  • the same securing part can be installed at both roller ends in such a configuration.
  • the one-sided, but in particular also the two-sided projection also has handling advantages with regard to an actuation of the securing part.
  • the focus is on handling that is as simple as possible and as completely tool-free as possible.
  • this is achieved in that the holder is pivotally mounted on a bearing plate of the dampening unit.
  • the bracket is thus optimally accessible.
  • the holder is pivotally mounted about a pivot axis parallel to the axes of rotation of the two rollers, which is formed with a pin fastened in a bearing plate. The swiveling takes place in the narrow gap between the end faces of the pair of rollers on the one hand and a bearing plate on the other hand without hindrance.
  • This configuration is optimized in that a bearing hook is formed on the holder for cooperation with the pin.
  • the removal of the holder is limited to simply unhooking it.
  • the pin projects beyond a guide surface of the seal holder, on which the sealing element with one of the first sealing surface opposite sliding surface. This leads, creating a kind of double function of the pin, to a limit stop for the sealing element, which can be grasped at the highest point.
  • the sealing element may have a thickening above the channel on its side facing the channel. This thickening preferably extends essentially radially with respect to the metering roller over the sealing element up to its end that is accessible for manual access. This thickening can - alone or in combination with the extension mentioned above - contribute to easy handling of the sealing element.
  • a sealing element can be individualized due to a thickening on one side with respect to the side on which it is to be installed in the dampening unit. This thickening is preferably pulled through to the second sealing surface. As a result, a further combinative effect is achieved, since the greatest wear attack usually also occurs in the region of the sealing element located above the groove.
  • a dampening unit F is shown and described - in particular with reference to FIGS. 1 and 6 - which has an application roller 7 as the first roller of a pair of rollers and a metering roller 6 as the second roller of a pair of rollers.
  • the metering roller 6 and the application roller 7 are in mutual contact in a contact zone 11. With their upper gusset they form a channel 5 in which a dampening solution supply 4 is received.
  • the metering roller 6 and the applicator roller 7 are arranged and driven such that the vectors of the respective peripheral speeds are directed downward in the contact zone 11.
  • the dampening unit F also has a sealing arrangement 1, which consists of an actual sealing element 2 and a holder 3 receiving it.
  • each pair of rollers is supported in one of opposing bearing plates 8, only one of which is shown.
  • the metering roller 6 has a somewhat smaller diameter than the application roller 7.
  • the axes of rotation 9 and 10 of the metering roller 6 and the application roller 7 are approximately the same height. Due to the relatively rigid design of the metering roller 6 and the more elastic Execution of the application roller 7, the application roller 7 forms a slightly concave shape in the contract zone 11.
  • the directions of rotation of the metering roller 6 and the application roller 7 in the operating state are indicated by the arrows 12 and 13.
  • the outer surfaces of the metering roller 6 and the applicator roller 7 thus rotate downward via the contact zone 11.
  • the sealing element 2 has a flat first sealing surface 36 (see FIGS. 3 and 6), which in operational contact rests on a region of an end face of the application roller 7 starting from the contact zone 11, and a curved second sealing surface 17. This is formed by a first one
  • the end face of a respective sealing element 2 adjoins the first sealing surface 36, stands vertically thereon and is fitted to the cross section of the metering roller 6.
  • this curved second sealing surface lies against a respective end section of the outer surface of the metering roller 6 surrounding the contact zone 11.
  • the first and the second sealing surfaces (36 and 17) adjoin each other with sharp edges.
  • the sealing element 2 consists for example of PTFE. This material is advantageous both in terms of wear and in terms of its low tendency to add dirt.
  • a level control of the dampening solution supply 4 in the channel 5 can be carried out using measures known per se. Corresponding measures can be found, for example, in the prior art mentioned at the beginning.
  • the sealing element 2 can be replaced in a user-friendly manner, since the holder 3 leaves a swivel path x for the sealing element 2 in a ready-for-removal position (see FIG. 5), into which the sealing element 2 can be brought about by pivoting the same about the axis 9 of the metering roller 6 .
  • the sealing element 2 is positively supported on the metal ring 14 of the metering roller 6. During the pivoting, the sealing element 2 moves from the sealing position (FIG. 1) to the ready-for-removal position (FIG. 5).
  • the sealing element 2 has an extension 15 in the region of its end face 2 ′′ (FIG. 2) which points upward in the sealing position. This extension 15 has a finger insertion groove 16 on its back.
  • the second sealing surface 17 of the sealing element 2 bearing against the metal ring 14 has a length which does not exceed a length corresponding to the angle of 180 ° of the circumference of the metal ring 14. In the exemplary embodiment, this second sealing surface 17 extends over an angle alpha of approximately 90 °, the contact zone 11 being approximately in the lower third of the 90 ° angle range. The lower end of the sealing element 2 extends sufficiently far downward beyond the contact zone 11, in the exemplary embodiment by approximately 30 °.
  • a holding projection 19 is formed on the holder 3.
  • the sealing element 2 has a second end face 2 ′′ ′′ opposite the curved second sealing face 17, which interacts with a securing part 20.
  • the essentially wedge-shaped securing part 20 is biased upwards by a spring arrangement 21. This acts on a lower end face 20 'of the securing part 20.
  • the end face 20' also has a groove 38, in which a leg 21 'of the spring arrangement 21, which is supported on a bearing plate 8 and is designed as a leg spring, engages.
  • the second end face 2 '' 'of the sealing element 2 runs at a distance parallel to a tangent to the metering roller 6 or to the second sealing face 17 of the sealing element 2, in such a way that a perpendicular end which cuts the end face 2' '' in the middle Line goes through a point P on the circumference of the metering roller 6, as shown in FIG. 1.
  • the point P also lies on a radial line passing through the axis 9 of the metering roller 6, which includes an angle of approximately 25 ° with the horizontal.
  • the securing part 20 has a wedge K.
  • a first wedge surface K 'of the wedge K interacts with the second end surface 2' '' of the sealing element 2, while a second wedge surface K '' interacts with a cam 22.
  • the cam 22 is fixed in the bearing plate 8 of the dampening unit F and is represented by a bolt in the example shown (cf. also FIG. 2).
  • the second wedge surface K ′′ simultaneously forms a longitudinal side of a guide slot 23 formed in the securing part 20, into which the cam 22 enters when the securing part 20 is pressed into an unlocked position. To form this guide slot 23, the wedge K continues into a section 24 which lies opposite the second wedge surface K ′′.
  • the second wedge surface K ′′ merges into a receptacle 25, against which the cam 22 comes to rest when the sealing element 2 is removed under the action of the spring arrangement 21 already explained.
  • the securing part 20 can be pulled from the cam 22 through an opening 26. 2
  • the cam 22 has at its end facing the applicator roller 7 a collar 27 which overlaps the securing part 20 in some areas. The securing part 20 is prevented by this collar 27 from moving in the longitudinal direction of the pair of rollers 6, 7.
  • the securing part 20 has a projection 28 which projects perpendicular to the plane of extent of the securing part 20.
  • This projection 28 is formed on both sides of the plate forming the securing part 20. It prevents the securing part 20 from tilting around the cam 22 when the sealing element 2 is removed and from sliding with its upper region downward into the gap Sp between the bearing plate 8 and an end face of the application roller 7. Due to the design of the projection 28 on both sides, a securing part 20 can be used on both sides of the dampening unit F.
  • the holder 3, which has a guide surface F1 for the sealing element 2, is pivotable about a pin 29 parallel to the axes of rotation 9, 10.
  • the pin 29 is arranged above the metering roller 6, projects beyond the guide surface F1 of the holder 3 and forms a pivot axis 37 for the holder 3. At the same time, the pin 29 forms a limit stop for the sealing element 2 when it is pivoted into the ready-for-removal position (cf. FIG. 5).
  • a bearing hook 30 is formed on the holder 3 for interaction with the one in storage Pin 29 . Its mouth, which opens downwards, forms diverging flanks 31 starting from a basic hook contour. The flanks 31 have a centering effect.
  • the holder 3 which is accommodated in the relatively narrow gap Sp between the end faces of the metering roller 6 and the application roller 7 on the one hand and the bearing plate 8 of the dampening unit F on the other hand, stands in the axial direction of the pair of rollers comprising the metering roller 6 and application roller 7 under the action of a pressure spring 32 accommodated in a pressure piece 33, the flat, curved head surface of which constantly acts on the holder 3 on its side facing away from the guide surface F1 for the sealing element 2 (cf. in particular FIG. 3).
  • a bend 35 on the bracket 3 is not only advantageous in terms of handling the bracket 3 when it is removed from the dampening unit, but also prevents the bracket 3 from pivoting down so far about the pin 29, for example with the sealing element 2 removed, that it can only be gripped with difficulty. Otherwise, the bend 35 is operationally at a distance above an upper side of the bearing plate 8.
  • the position of the holder 3 is determined by the sealing element 2, via its support on the holding projection 19. Since the sealing element 2 is approximately in the direction due to wear arrow Pf moves down during operation, there is also a certain movement of the holder 3.
  • the securing part 20 is pressed down on the projections 28 against the action of the leg 21 ′ of the spring arrangement 21. 4, the securing part 20 is shifted accordingly. An operator can do this by hand. Due to the resulting gap Z (see FIG. 4), the sealing element 2 can be pivoted from the sealing position into the ready-for-removal position by pivoting around the metering roller 6. 5 shows the sealing element 2 after such a pivoting operation with the securing part 20 still depressed (the respective depressing hand not being shown in FIGS. 4 and 5). 5, the sealing element 2 can be easily removed upwards.
  • the sealing element 2 advantageously has a thickening 18 which is formed above the groove 5 on the side of the sealing element 2 facing the groove 5.
  • This thickening 18 extends essentially radially to the metering roller 6.
  • the thickening 18 merges into the extension 15.
  • an edge of the thickening 18 also offers an attachment option for a tool in order to pivot the sealing element 2 into its ready-for-removal position.
  • the thickening 18 extending to the curved sealing surface 17 also provides advantages with regard to the wear behavior of the sealing element 2 as a result of the widening of the curved sealing surface 17 associated therewith.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (12)

  1. Dispositif d'étanchéité pour chaque extrémité d'une paire de rouleaux d'un mécanisme de mouillage d'une imprimante offset, dans lequel
    - la paire de rouleaux est formée par un premier rouleau (7), tournant en service, sous la forme d'un rouleau applicateur d'agent de mouillage, et d'un second rouleau (6), sous la forme d'un rouleau doseur, parallèle au premier et tournant en service et ajusté dans une zone de contact (11) sur le premier rouleau (7),
    - les sens de rotation des deux rouleaux (6 et 7) donnant, dans la zone de contact (11), des vecteurs dirigés vers le bas des vitesses périphériques des deux rouleaux (6 et 7),
    - il est prévu un réservoir pour une réserve d'agent de mouillage (4) sous la forme d'une goulotte (5), formée dans un coin situé au-dessus de la zone de contact (11), entre les deux rouleaux, dont les extrémités respectives sont fermées au moyen d'un dispositif d'étanchéité respectif,
    - un dispositif d'étanchéité respectif présente un élément d'étanchéité (2) et une fixation (3) logeant celui-ci,
    - l'élément d'étanchéité (2) respectif possède une première surface d'étanchéité (36) plane et s'applique avec celle-ci, en service, contre une région, partant de la zone de contact (11), d'une surface frontale respective du premier rouleau (7),
    - au moyen d'une première surface frontale d'un élément d'étanchéité respectif, il est formé une seconde surface d'étanchéité (17) courbée faisant suite à la première surface d'étanchéité (36), perpendiculaire à celle-ci et épousant la section transversale du second rouleau (6), laquelle seconde surface d'étanchéité s'applique en service contre une partie d'extrémité respective, entourant la zone de contact (11), de la surface d'enveloppe du second rouleau (6),
    - l'élément d'étanchéité (2) respectif est pressé, en service, au moyen de la fixation respective, sous l'effet d'un dispositif à ressort (32, 33), contre la surface frontale respective du premier rouleau (7),
    - la paire de rouleaux s'étend entre une paire de plaques d'appui (8) se faisant face l'une l'autre, supportant la paire de rouleaux,
    - la fixation (3) respective s'articule contre une plaque d'appui (8) au moyen d'un assemblage pivotant (29, 30) avec un axe de pivotement (37), parallèle à un axe de rotation de la paire de rouleaux, et
    - la seconde surface d'étanchéité (17) courbée de l'élément d'étanchéité (2) respectlf est maintenue, dans une position de travail de la fixation (3) respective, au moyen d'une saillie (19) de retenue empêchant une rotation de l'élément d'étanchéité (2) dans le sens de rotation du second rouleau (6), de la fixation respective, dans une position d'étanchéité s'appliquant contre une partie d'extrémité respective de la surface d'enveloppe du second rouleau (6), une force de réglage résultant des forces de friction entre la paire de rouleaux (6, 7) et l'élément d'étanchéité (2) laquelle force de réglage est transmise à la fixation (3) par l'élément d'étanchéité (2), par l'intermédiaire de la saillie de retenue (19),
    caractérisé en ce que la fixation (3) est automatiquement maintenue dans la position de travail, par ladite force de réglage exercée sur cette fixation (3), et que l'élément d'étanchéité (2) peut pivoter, par rapport à l'axe de rotation (9) du second rouleau (6), dans le sens contraire au sens de rotation de ce rouleau (6), d'une distance de pivotement (x), à partir de la position d'étanchéité, dans une position de préparation de dépose.
  2. Dispositif d'étanchéité selon la revendication 1, caractérisé en ce qu'une extrémité de l'élément d'étanchéité (2), arrivant la première pendant un pivotement de l'élément d'étanchéité (2) dans sa position de préparation de dépose, présente un prolongement (15) librement accessible, au moins dans la position de préparation de dépose.
  3. Dispositif d'étanchéité selon la revendication 1, caractérisé en ce que l'assemblage pivotant respectif est formé d'une tige (29) cylindrique, fixée sur la plaque d'appui (8) respective et d'un crochet d'appui (30), formé sur la fixation (3), épousant la section transversale de la tige (29) et accroché à la tige (29).
  4. Dispositif d'étanchéité selon la revendication 1, caractérisé en ce qu'une tige (29), formée sur la plaque d'appui (8) respective, pour former l'assemblage pivotant, est conçue à la manière d'une butée pour une extrémité de l'élément d'étanchéité (2), arrivant la première pendant un pivotement de l'élément d'étanchéité (2) dans sa position de préparation de dépose.
  5. Dispositif d'étanchéité selon la revendication 1, caractérisé en ce qu'une zone d'extrémité, située en service au-dessus de la zone de contact (11), de la seconde surface d'étanchéité (17) courbée de l'élément d'étanchéité (2), est élargie dans la direction longitudinale de la paire de rouleaux (6, 7), par rapport au reste de la surface d'étanchéité (17) courbée.
  6. Dispositif d'étanchéité selon la revendication 5, caractérisé en ce que la zone d'extrémité élargie de la seconde surface d'étanchéité (17) courbée, située en service au-dessus de la zone de contact (11), est suivie d'une surépaisseur (18) de l'élément d'étanchéité (2), s'étendant à peu près radialement par rapport à cette surface d'étanchéité (17), laquelle surépaisseur forme un prolongement (15) librement accessible au moins dans la position de préparation de dépose de l'élément d'étanchéité (2).
  7. Dispositif d'étanchéité selon la revendication 1, caractérisé en ce que contre l'élément d'étanchéité (2) s'applique un élément de blocage (20), bloquant un pivotement de celui-ci dans le sens contraire au sens de rotation du second rouleau (6), lequel élément de blocage peut être maintenu, sous l'action de la force d'un ressort, dans une position de blocage respectif correspondant à une position d'étanchéité de l'élément de blocage (2) et peut être déplacé manuellement dans une position de déverrouillage, en surmontant la force du ressort.
  8. Dispositif d'étanchéité selon la revendication 7, caractérisé en ce qu'il est formé sur l'élément de blocage (20) un coin (K), qui est maintenu au moyen d'un dispositif à ressort (21), d'une part en application avec une seconde surface frontale (2''') de l'élément d'étanchéité (2), faisant face à la seconde surface d'étanchéité (17) courbée et est maintenu d'autre part dans la position de blocage, avec une came (22) fixe par rapport au mécanisme de mouillage.
  9. Dispositif d'étanchéité selon la revendication 7, caractérisé en ce que l'élément de blocage (20) est maintenu dans une position de blocage, au moyen d'une branche (21') s'engageant dans une rainure (38) de celui-ci, d'un dispositif à ressort (21), prenant appui contre une plaque d'appui (8).
  10. Dispositif d'étanchéité selon la revendication 7, caractérisé en ce que l'élément de blocage (20) s'articule sur une plaque d'appui (8), de manière à coulisser le long d'une fente de guidage (23), formée à l'intérieur, d'une position de blocage dans une position de déverrouillage et inversement.
  11. Dispositif d'étanchéité selon la revendication 8, caractérisé en ce qu'une surface conique (K'') du coin (K), s'appliquant au moins dans une position de blocage de l'élément de blocage (20) contre la came (22), constitue un grand côté d'une fente de guidage (23) formée dans l'élément de blocage (20), traversée par la came (22), fente au moyen de laquelle l'élément de blocage (20) s'articule sur une plaque d'appui (8), de manière à coulisser d'une position de blocage dans une position de déverrouillage et inversement.
  12. Dispositif d'étanchéité selon la revendication 8, caractérisé en ce que
    - une première surface conique (K') et une seconde surface conique (K''), opposée à celle-ci, sont formées au moyen de surfaces de bordure respectives d'un élément de blocage (20) en forme de plaque,
    - l'élément de blocage (20) en forme de plaque est placé entre une plaque d'appui (8) et une surface frontale faisant face à celle-ci du premier rouleau (7) et
    - une extrémité de l'élément de blocage (20), dépassant de la plaque d'appui (8), dans une position de blocage de l'élément de blocage (20), présente une saillie (28), orientée suivant une direction longitudinale de la paire de rouleaux (6, 7), au moyen de laquelle l'élément de blocage (20) prend appui contre la plaque d'appui (8).
EP90106638A 1989-05-03 1990-04-06 Dispositif d'étanchéité pour une imprimante offset Expired - Lifetime EP0395911B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3914647 1989-05-03
DE3914647A DE3914647A1 (de) 1989-05-03 1989-05-03 Dichtungsanordnung an einer offset-druckmaschine

Publications (3)

Publication Number Publication Date
EP0395911A2 EP0395911A2 (fr) 1990-11-07
EP0395911A3 EP0395911A3 (fr) 1991-06-12
EP0395911B1 true EP0395911B1 (fr) 1994-12-07

Family

ID=6380034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106638A Expired - Lifetime EP0395911B1 (fr) 1989-05-03 1990-04-06 Dispositif d'étanchéité pour une imprimante offset

Country Status (6)

Country Link
US (1) US5492058A (fr)
EP (1) EP0395911B1 (fr)
JP (1) JPH02303838A (fr)
CA (1) CA2012156A1 (fr)
DE (2) DE3914647A1 (fr)
ES (1) ES2067585T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2977072B2 (ja) * 1996-06-06 1999-11-10 リョービ株式会社 印刷機の給湿装置
DE19640775A1 (de) * 1996-10-02 1998-04-09 Roland Man Druckmasch Einsatz für einen Keilfarbkasten von Druckmaschinen
DE19643353A1 (de) * 1996-10-21 1998-04-23 Heidelberger Druckmasch Ag Vorrichtung zur Dosierung von Flüssigkeiten
DE19734910A1 (de) * 1997-08-12 1999-02-18 Windmoeller & Hoelscher Rakelvorrichtung für ein Spülfarbwerk einer Rotationsdruckmaschine
US5983791A (en) * 1998-07-16 1999-11-16 Varn Products Company, Inc. End-seal carrier assembly
DE19860334A1 (de) * 1998-12-24 2000-06-29 Will E C H Gmbh & Co Anordnung an einem Druckwerk zum stirnseitigen Abdichten zweier Walzen
JP3899426B2 (ja) * 2005-03-29 2007-03-28 アイマー・プランニング株式会社 印刷機
JP3823211B1 (ja) * 2005-03-29 2006-09-20 アイマー・プランニング株式会社 印刷機

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE537165C (de) * 1930-11-29 1931-11-04 Praktische Maschinen G M B H Einrichtung zur Verhinderung der Schaumbildung bei Fluessigkeitsauftragemaschinen
US2887049A (en) * 1955-12-29 1959-05-19 Harris Intertype Corp Ink fountain
US2945437A (en) * 1958-05-05 1960-07-19 Miehle Goss Dexter Inc Seal-off arrangement for undershot ink fountain
US3589287A (en) * 1968-05-20 1971-06-29 Wood Industries Inc Rotogravure ink fountain with cover-lifting system
US3604349A (en) * 1968-12-24 1971-09-14 Addressograph Multigraph Two-system moisture applicator for a lithographic press
US3769909A (en) * 1971-03-10 1973-11-06 Rockwell International Corp Wet nip dampener
US4455938A (en) * 1979-05-22 1984-06-26 Graph Tech Inc. Dampening apparatus for lithographic press
JPS592615B2 (ja) * 1980-06-06 1984-01-19 株式会社 東京機械製作所 輪転印刷機のアニロックスロ−ルにおけるインキ掻取装置
DE3069766D1 (en) * 1980-09-10 1985-01-17 Varn Products Company Limited Dampening feed apparatus

Also Published As

Publication number Publication date
CA2012156A1 (fr) 1990-11-03
DE3914647C2 (fr) 1991-06-27
ES2067585T3 (es) 1995-04-01
EP0395911A3 (fr) 1991-06-12
DE59007903D1 (de) 1995-01-19
US5492058A (en) 1996-02-20
DE3914647A1 (de) 1990-11-08
EP0395911A2 (fr) 1990-11-07
JPH02303838A (ja) 1990-12-17

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