EP2106908B1 - Dispositif humidificateur d'un dispositif d'humidification à pulvérisation - Google Patents

Dispositif humidificateur d'un dispositif d'humidification à pulvérisation Download PDF

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Publication number
EP2106908B1
EP2106908B1 EP09004038A EP09004038A EP2106908B1 EP 2106908 B1 EP2106908 B1 EP 2106908B1 EP 09004038 A EP09004038 A EP 09004038A EP 09004038 A EP09004038 A EP 09004038A EP 2106908 B1 EP2106908 B1 EP 2106908B1
Authority
EP
European Patent Office
Prior art keywords
spray
dampening
bar
spray bar
positioning element
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 - Fee Related
Application number
EP09004038A
Other languages
German (de)
English (en)
Other versions
EP2106908A2 (fr
EP2106908A3 (fr
Inventor
Hary Kosciesza
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.)
Technotrans SE
Original Assignee
Technotrans SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technotrans SE filed Critical Technotrans SE
Publication of EP2106908A2 publication Critical patent/EP2106908A2/fr
Publication of EP2106908A3 publication Critical patent/EP2106908A3/fr
Application granted granted Critical
Publication of EP2106908B1 publication Critical patent/EP2106908B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F7/00—Rotary lithographic machines
    • B41F7/20—Details
    • B41F7/24—Damping devices
    • B41F7/30—Damping devices using spraying elements

Definitions

  • the invention relates to a moistening device of a spray dampening unit for printing machines and to a method for positioning a spray bar in such a moistening device.
  • Dampening units are used in printing technology.
  • devices are usually a series of contacting rollers which apply a dampening solution (usually water and several additives) evenly to a printing plate.
  • a dampening solution usually water and several additives
  • the water can be supplied via a water tank, via nozzles or in a similar manner e.g. applied to a ductor roller and then transported as a water film over all rollers evenly to the pressure plate.
  • the dampening units in which nozzles are used are also referred to as spray dampening units.
  • Sprühfeuchtwerke usually have a spray valves carrying spray bar, which is mounted for different purposes towards the roller and away from this adjustable on a housing.
  • a spray dampening of this kind is from the EP 1 009 633 B1 known.
  • the two ends of a spray bar are held such that the spray bar and thus the spray nozzles can be adjusted to the roller.
  • the patent DE 698 35 545 T2 describes a spray dampening unit, the spray bar is pivotally mounted on a fixed spray room.
  • the spray dampening unit is divided into two components, a spray room permanently mounted on the pressure frame and a rear pivoting beam in which the spray valves are located.
  • the invention has for its object to provide a low-priced and easy-to-maintain and / or retrofitted humidifying a Sprühfeuchtwerks for printing machines.
  • a first aspect of the invention relates to a spray dampening unit comprising a moistening device with a dampening unit housing, a spray bar holder and a spray bar, wherein the spray bar is connected to the dampening unit via the spray bar holder in such a way that the spray bar is connected between a spray bar Working position and a service position is pivotable, wherein the spray bar in the service position relative to the Sprühbalkenhalterung has at least one degree of freedom, which allows the spray bar is removed from the Sprühbalkenhalterung, and wherein the spray bar, this at least one degree of freedom is taken when swiveling in the working position.
  • the dampening unit housing which could also be referred to as a spray housing, can be attached to a machine frame of the printing press or the dampening unit.
  • the dampening box may extend parallel to and along the body to be humidified.
  • the body to be moistened can be a fountain roller of the dampening unit. It may be provided on the spray bar dampening spray nozzles, which may be freely accessible in the service position from outside the dampening unit housing.
  • degree of freedom describes the possibility of movement of bodies in space. The term is often used in the context of joints, and refers to the number and type of possible movements that the joint can perform. It is based on the assumption that a body has three rotational and three translatory degrees of freedom in space.
  • a joint is when two bodies communicate with each other in such a way that at least one of the six degrees of freedom of the other body is taken via the articulated relationship of one body to the other.
  • the degree of freedom of the spray bar in the service position can be a translational degree of freedom.
  • the translatory degree of freedom can be given on the spray bar in nozzle spray direction in the service position.
  • the spray bar in the working position may have a defined in relation to the dampening unit housing, which specifies a distance of the spray nozzles from the body to be moistened.
  • Working position is the position in which the spray bar is in operation of the spray dampening unit.
  • the body to be moistened may be, for example, a roller to be moistened, in particular a ductor roller of the spray dampening unit.
  • Another embodiment relates to such a moistening device of a spray dampening unit, wherein the spray bar is pivotable together with the Sprühbalkenhalterung between the working position and the service position.
  • the spray bar holder may comprise two substantially U-shaped profiles each having two legs, the spray bar being slidably held in the service position in the U-shaped profiles between the legs of the U-shaped profiles.
  • the spray bar may have a displaceability in the direction of a longitudinal extension of the legs, ie in the removal direction.
  • at least one translatory degree of freedom (displacement in the withdrawal direction) can be provided.
  • a longitudinal guide which provides a translatory degree of freedom in removal direction.
  • the translatory degree of freedom in the withdrawal direction may be directed in a direction which is parallel to a radius extending from the pivot axis.
  • such a moistening device may have a design in which the U-shaped profiles are arranged on a service flap such that when opening the service flap, the U-shaped profiles are pivoted together with the spray bar from the dampening unit to the service position.
  • a service door defines a flap on the dampening unit housing a humidifying device, through which access to the spray bar for the purpose of its maintenance, etc. can be granted.
  • the service door may extend substantially the length of the spray bar.
  • such a moistening device may have a design in which the dampening unit housing in the working position of the spray bar in the spraying direction in front of the spray bar forms a substantially closed spray chamber, wherein the dampening unit housing in the region of the spray chamber Inspection hatch, over which the spray room is accessible from outside the dampening unit housing.
  • the inspection flap can be arranged so that a sighting of the spray bar can be made in the working position.
  • the inspection flap can be checked spray pattern, contamination of the spray room and / or the spray nozzles.
  • the inspection flap may extend substantially the length of the spray bar.
  • Essentially completed refers to the working state of the dampening unit, in which the dampening unit is arranged in close proximity to the body to be humidified, so that the body to be humidified blocks a spray opening in the dampening unit housing the spray chamber on one side.
  • the body to be moistened may be, for example, a fountain roller of a dampening unit.
  • a further embodiment relates to such a moistening device in which the spray bar is subjected to the at least one degree of freedom when swiveling into the working position by swiveling in a holding region of the spray bar into a guide opening of a positioning element.
  • a holding region of the spray bar can be provided via a corresponding design of a spray bar cross-section corresponding to a guide opening cross-section.
  • the spray bar cross section may be made substantially rectangular and the guide opening area may be e.g. have at least one planar contact area, to which one side of the rectangular Sprühbalkenqueritess is applied in the service position.
  • the planar contact area can run transversely or perpendicular to the spraying direction of the spray nozzles.
  • the distance between the spray bar and e.g. the ductor roller are specified in spray direction.
  • a further embodiment of a spray dampening unit has a positioning element, wherein the positioning element has a mounting region and a contact region, wherein the positioning element extends beyond the mounting region is exchangeably mounted on the dampening unit housing, and wherein the contact area is designed such that the spray bar can be brought into abutment with the contact area of the positioning, so that over the plant to the contact area a defined position of the spray bar in relation to the dampening unit is guaranteed.
  • the mounting area refers to the area of the positioning element over which the positioning element can be mounted in the dampening unit housing.
  • the contact area is an area with functional areas at which a contact contact between spray bar and positioning element can be provided.
  • the contact area may have surface areas which are adapted to the contour of the spray bar in corresponding surface areas.
  • the surface areas of the contact area may correspond to the surface design of the spray bar in the holding area of the spray bar.
  • One or more positioning elements can be provided for the positioning of the spray bar in the dampening unit per spray bar.
  • a positioning element may for example be configured plate-shaped and / or mounted on a side part of the dampening unit housing. With several positioning elements per spray bar, these can be provided on both sides of the dampening unit housing at the ends of the spray bar, for example. An arrangement in the central region of the spray bar in its working position is conceivable.
  • Such a moistening device may have a design in which the moistening device has a fine adjustment device via which the exchangeable mounting of the positioning element on the dampening unit housing can be effected and by means of which the position of the positioning element relative to the dampening unit housing can be fine-tuned.
  • a fine adjustment device may e.g. via a screw connection of the positioning via slots.
  • the slots may e.g. be arranged in the side panels of the dampening unit housing and / or in the respective positioning element itself.
  • such a moistening device is a set of Positioning elements have, in which the contact areas have in different positions to the mounting areas, so that on the choice of or the respective positioning a coarse adjustment of the position of the spray bar in the dampening unit housing is vorappelbar.
  • the positioning elements can be provided, for example, as essentially plate-shaped cast parts, in particular injection-molded parts. The positioning can be made in one piece and / or plastic.
  • a further embodiment relates to such a moistening device, in which the abutment region of the positioning element is provided in the region of a guide opening of the positioning element, into which the spray bar can be inserted into a working position and / or removed therefrom.
  • such a moistening device may have a design in which the guide opening of the positioning element has an opening area with an opening width which is greater than the corresponding width of the spray bar, and wherein the guide opening has a base area with a basic width which corresponds to the corresponding width of the spray bar ,
  • the opening area refers to the area of the positioning element through which the spray bar first passes when it is pivoted to its working position.
  • the basic area refers to the area of the positioning element that surrounds the spray bar on both sides when the spray bar has reached its working position.
  • the guide opening of the positioning element can have an elastically deformable locking area which fixes the spray bar in its working position after complete insertion of the spray bar.
  • a locking region may be formed integrally with the positioning element, for example as a latching element.
  • an embodiment of the locking portion as an independent component, which on the positioning is mounted or provided independently of the positioning of the moistening device and / or mounted.
  • the assembly of the selected positioning over the mounting portion of the positioning can be done on corresponding dampening unit mounting areas of the dampening unit housing. Thereafter, the spray bar can be brought into abutment with an abutment region of the positioning element.
  • the procedure can also be reversed so that the positioning was mounted on the spray bar and investment areas of the selected positioning are brought into abutment with investment areas in the dampening unit housing.
  • a difference between positioning elements of the set can lie in a different position of the respective contact area in relation to the respectively provided mounting area.
  • different positions of the spray bar can be adjusted in a simple manner with comparably short set-up times.
  • a difference between positioning elements of the set can also lie in a different design of a guide opening of a positioning element. So different spray bars can be easily mounted in the dampening unit housing with the advantages mentioned above different positioning.
  • the provided humidifying device of a spray dampening unit may be a humidifying device as described above, as well as the set of positioning elements provided may be a set of positioning elements as described above.
  • FIG. 1 shows a preferred embodiment of a moistening device 10 according to the invention in an isometric view.
  • the moistening device 10 is shown in a service position in which a spray bar 40 has been removed from a spray bar holder 30.
  • FIG. 1 and in the other figures has been omitted to show the remaining parts of a spray dampening unit or a printing press on which such a spray dampening unit is arranged. Therefore, a ductor roller, which can be moistened by the moistening device 10, for example, not shown.
  • a dampening unit housing 20 of the moistening device 10 on the in FIG. 1 left side has a concave recess which is adapted to the convex surface profile of the ductor roller, so that the moistening device 10 can be brought close to the ductor roller.
  • the moistening device 10 shown in the service position has a service flap 21 in the rear part of the dampening unit housing 20, which is unfolded in the illustrated service position. Furthermore, an inspection flap 22 is shown in spray direction of the spray bar 40 in front of the spray bar on the dampening unit housing 20, through which the interior of a spray chamber 23 is accessible.
  • a spray bar holder 30 is arranged, which is formed in the illustrated embodiment as a fork-shaped holder.
  • the support may have a substantially U-shaped cross-section and may be secured to the service door 21 as shown, such that opening the service door causes the spray bar support 30 to pivot so that a spray bar 40 placed in the spray bar support 30 is in a service position can be pivoted.
  • the spray bar 40 at its two longitudinal ends holding portions 41, which have a substantially rectangular cross-section.
  • the other two parallel sides of the rectangular cross-section correspond in the illustrated embodiment with a guide opening 52, which is provided on a positioning element 50.
  • a positioning element 50 is mounted on both longitudinal ends of the dampening unit housing 20 in the illustrated embodiment.
  • the guide opening 52 has, as in FIG. 2 is shown, a contact area 51, with one side of the Holding portion 41 comes into engagement when swiveling the spray bar 40 in the working position.
  • the illustrated guide opening 52 has in this embodiment on the opposite other side on a further wall portion. The distance between this wall region and the abutment region 51 can correspond approximately to the width of the corresponding part of the holding region 41.
  • the precise position in the spraying direction, in which the spray bar 40 is fixed in its working position in this way, can be adjusted via a fine adjustment device 60.
  • the fine adjustment device 60 is realized in the illustrated embodiment by elongated holes in a side part of the dampening unit housing 20 and corresponding screws with which the positioning element 50 is fixed in the dampening unit housing 20.
  • the elongated holes can additionally or alternatively also be provided on the positioning element 50, which in the illustrated embodiment is in the form of a plate. Element is formed and can be manufactured in one piece by plastic injection molding.
  • the elongated holes in the positioning element 50 are in FIG. 4 represented and form a mounting portion 53rd
  • a locking portion 55 is provided, which causes a latching of the spray bar 40 in the positioning member 50.
  • the locking portion 55 is the Figures 2 and 3 shown.
  • the wall region of the positioning element which is opposite to the abutment region 51, is made significantly shorter, so that an opening portion 521 is provided in the guide opening 52 having an opening width W1 which is significantly larger than the width of the corresponding area of the holding portion 41 of the spray bar 40.
  • a base portion 522 is formed, which has a basic width W2, which substantially corresponds to the corresponding width of the holding portion 41.
  • a set of positioning elements 50 can be provided which has differently configured positioning elements 50.
  • Such a different embodiment may e.g. The fact that the contact areas 51 of the respective positioning elements 50 have a different distance from the respective mounting area 53 of the respective positioning element 50 relative to the spray direction of a spray bar 40 inserted into the positioning plate.
  • a distance between the abutment region 51 and a surface of a ductor roller, which is to be moistened by the moistening device 10 can be preselected. Accurate positioning can then be done via the fine adjustment device 60.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)

Claims (12)

  1. Dispositif humidificateur à pulvérisation comprenant un dispositif d'humidification (10) muni d'un boîtier de dispositif humidificateur (20), d'un support de rampe de pulvérisation (30) et d'une rampe de pulvérisation (40), la rampe de pulvérisation (40) étant reliée via le support de rampe de pulvérisation (30) au boîtier de dispositif humidificateur (20) de telle sorte que la rampe de pulvérisation (40) est pivotante entre une position de travail et une position de service, caractérisé en ce que la rampe de pulvérisation (40) présente dans la position de service par rapport au support de rampe de pulvérisation (30) au moins un degré de liberté grâce auquel la rampe de pulvérisation (40) est amovible du support de rampe de pulvérisation (30), la rampe de pulvérisation (40) perdant au moins ce degré de liberté lors du pivotement dans la position de travail.
  2. Dispositif humidificateur à pulvérisation selon la revendication 1, la rampe de pulvérisation (40) étant pivotante conjointement avec le support de rampe de pulvérisation (30) entre la position de travail et la position de service.
  3. Dispositif humidificateur à pulvérisation selon l'une des revendications précédentes, le support de rampe de pulvérisation (30) comprenant deux profils essentiellement en U avec deux montants, la rampe de pulvérisation (40) introduite dans la position de service dans les profils en U étant maintenue coulissante entre les montants des profils en U.
  4. Dispositif humidificateur à pulvérisation selon l'une des revendications précédentes, les profils en U étant disposés sur un clapet de service (21) de telle sorte qu'à l'ouverture du clapet de service (21) les profils en U sont pivotés conjointement avec la rampe de pulvérisation (40) hors du boîtier de dispositif humidificateur (20) dans la position de service.
  5. Dispositif humidificateur à pulvérisation selon l'une des revendications précédentes, le boîtier de dispositif humidificateur (20) formant dans la position de travail de la rampe de pulvérisation dans le sens de pulvérisation en amont de la rampe de pulvérisation (40) un espace de pulvérisation (23) essentiellement fermé, le boîtier de dispositif humidificateur (20) dans la zone de l'espace de pulvérisation (23) présentant un clapet d'inspection (22) qui permet d'accéder à l'espace de pulvérisation (23) depuis l'extérieur du boîtier de dispositif humidificateur (20).
  6. Dispositif humidificateur à pulvérisation selon l'une des revendications précédentes, la rampe de pulvérisation (40) perdant au moins un degré de liberté lors du pivotement dans la position de travail via le pivotement d'une zone de retenue de la rampe de pulvérisation dans une ouverture de guidage (52) d'un élément de positionnement.
  7. Dispositif humidificateur à pulvérisation selon l'une des revendications précédentes comprenant un élément de positionnement (50), ce dernier comportant une zone de montage (53) et une zone d'appui (51), l'élément de positionnement (50) pouvant être monté de façon interchangeable sur le boîtier de dispositif humidificateur (20) par la zone de montage (53), et la zone d'appui (51) étant conçue de telle sorte que la rampe de pulvérisation (40) peut être amenée en appui contre la zone d'appui (51) de l'élément de positionnement, de sorte que l'appui contre la zone d'appui (51) permet de garantir une position définie de la rampe de pulvérisation par rapport au boîtier de dispositif humidificateur (20).
  8. Dispositif humidificateur à pulvérisation selon la revendication 7, le dispositif humidificateur (10) comprenant un dispositif de réglage fin (60) qui permet d'accomplir le montage interchangeable de l'élément de positionnement sur le boîtier de dispositif humidificateur (20) et qui permet le réglage fin de la position de l'élément de positionnement par rapport au boîtier de dispositif humidificateur (20).
  9. Dispositif humidificateur à pulvérisation selon une des revendications 7 ou 8, le dispositif humidificateur à pulvérisation comportant un ensemble d'éléments de positionnement pour lesquels les zones d'appui (51) présentent différentes positions par rapport aux zones de montage (53), de sorte qu'un réglage grossier de la position de la rampe de pulvérisation dans le boîtier de dispositif humidificateur (20) peut être effectué en sélectionnant le ou les éléments de positionnement respectifs.
  10. Dispositif humidificateur à pulvérisation selon l'une des revendications 7 à 9, la zone d'appui (51) de l'élément de positionnement étant prévue dans la zone d'une ouverture de guidage (52) de l'élément de positionnement, dans laquelle la rampe de pulvérisation (40) peut être utilisée dans une position de travail.
  11. Dispositif humidificateur à pulvérisation selon la revendication 10, dans lequel l'ouverture de guidage (52) de l'élément de positionnement comporte une zone d'ouverture (521) dont la largeur d'ouverture (W1) est supérieure à la largeur correspondante de la rampe de pulvérisation, et l'ouverture de guidage (52) comportant une zone de base (522) dont la largeur de base (W2) correspond à la largeur correspondante de la rampe de pulvérisation.
  12. Dispositif humidificateur à pulvérisation selon l'une des revendications 10 ou 11, dans lequel l'ouverture de guidage (52) de l'élément de positionnement présente une zone de verrouillage (55) déformable élastiquement qui fixe la rampe de pulvérisation (40) dans sa position de travail une fois la rampe de pulvérisation entièrement utilisée.
EP09004038A 2008-04-04 2009-03-20 Dispositif humidificateur d'un dispositif d'humidification à pulvérisation Expired - Fee Related EP2106908B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008017275A DE102008017275B4 (de) 2008-04-04 2008-04-04 Befeuchtungsvorrichtung eines Sprühfeuchtwerks

Publications (3)

Publication Number Publication Date
EP2106908A2 EP2106908A2 (fr) 2009-10-07
EP2106908A3 EP2106908A3 (fr) 2009-12-30
EP2106908B1 true EP2106908B1 (fr) 2011-01-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09004038A Expired - Fee Related EP2106908B1 (fr) 2008-04-04 2009-03-20 Dispositif humidificateur d'un dispositif d'humidification à pulvérisation

Country Status (3)

Country Link
US (1) US20090249970A1 (fr)
EP (1) EP2106908B1 (fr)
DE (2) DE102008017275B4 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708058A (en) * 1985-10-10 1987-11-24 Smith Rpm Corporation Water pulse spray dampening system and method for printing presses
JP2689309B2 (ja) * 1994-09-30 1997-12-10 株式会社東京機械製作所 平版印刷機のダンプニング装置
US5974965A (en) * 1997-02-03 1999-11-02 Baldwin Graphic Syetems, Inc. Single point quick disconnect spray bar
SE518402C2 (sv) * 1997-02-17 2002-10-01 Jimek Ab Sprayfuktanordning för en tryckpress
DE19811554C1 (de) * 1998-03-17 1999-04-29 Technotrans Ag Sprühfeuchtwerk für Offset-Druckwerke
SE521304C2 (sv) * 1999-12-21 2003-10-21 Baldwin Jimek Ab Anordning för att reglera den mängd fuktvätska som sprayas på pulsat vis på en tryckvals
DE10317470B4 (de) * 2003-04-16 2005-10-06 Technotrans Ag Sprühfeuchtwerk

Also Published As

Publication number Publication date
EP2106908A2 (fr) 2009-10-07
US20090249970A1 (en) 2009-10-08
DE502009000262D1 (de) 2011-02-17
EP2106908A3 (fr) 2009-12-30
DE102008017275A1 (de) 2009-10-15
DE102008017275B4 (de) 2010-11-11

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