EP2393662A2 - Module de pulvérisation sur une surface latérale d'un cylindre en rotation - Google Patents

Module de pulvérisation sur une surface latérale d'un cylindre en rotation

Info

Publication number
EP2393662A2
EP2393662A2 EP09768822A EP09768822A EP2393662A2 EP 2393662 A2 EP2393662 A2 EP 2393662A2 EP 09768822 A EP09768822 A EP 09768822A EP 09768822 A EP09768822 A EP 09768822A EP 2393662 A2 EP2393662 A2 EP 2393662A2
Authority
EP
European Patent Office
Prior art keywords
spray
metering
spraying device
spraying
cylinder
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
EP09768822A
Other languages
German (de)
English (en)
Other versions
EP2393662B1 (fr
Inventor
Georg Schneider
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2393662A2 publication Critical patent/EP2393662A2/fr
Application granted granted Critical
Publication of EP2393662B1 publication Critical patent/EP2393662B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/32—Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed
    • B05B12/36—Side shields, i.e. shields extending in a direction substantially parallel to the spray jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/658—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits the spraying apparatus or its outlet axis being perpendicular to the flow conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/28—Spray apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/26—Spraying devices

Definitions

  • Spray module for spraying a lateral surface of a rotating cylinder
  • the invention relates to a spray module for an offset printing machine, which cooperates with a surface of a, a printing plate-carrying plate cylinder or a non-printing plate-bearing roller
  • an inking unit for printing machines wherein the ink is sprayed through a spray nozzle on a paint roller.
  • the spray area is enclosed by a plurality of walls which form gaps with the surface of the inking roller. At these gaps, the walls each have channels through which excess paint mist is sucked off and fed to a known suction device.
  • a spray dampening module of this kind is e.g. became known from EP 1 004436 B1.
  • This spray dampening unit has a single nozzle and an upper rigid and a lower rigid panel.
  • the two panels extend over the entire width of the Sprühfeuchtwerkes and are directed to a printing cylinder.
  • the apertures are there to provide space in the space between them, i. To form a catchment area, which is to ensure a propagation of spray in a desired direction.
  • EP 0 344409 A2 shows a spray dampening unit with a plurality of nozzles and an upper and a lower panel. Both panels are independently pivotable and extend over the entire width of the spray dampening beam. The pivotability of the two panels is used to allow access to the spray nozzles of Sprühfeuchttechnik beam.
  • EP 0344409 A2 has disclosed a fountain solution spray bar which has a plurality of spray cans arranged side by side.
  • the spray nozzles spray in a horizontal long body of an upper and a lower hinged spray bar length spray shield. Foldable, therefore, to allow access to the roller to be wetted.
  • the invention has for its object to provide a device for the contactless application of a liquid, e.g. Dampening water, to create a pressure plate or shell of a roller.
  • a liquid e.g. Dampening water
  • the device for contactless wetting on which this invention is based advantageously makes it possible to achieve particularly accurate wetting of the printing plate during offset printing.
  • the device according to the invention has the advantage that the formation of the flat jet is always the same because it does not occur frequency-dependent. This, in turn, with the use of flat jet nozzles has a positive effect on the uniform distribution of the spray over the entire spray or spray pattern when applied liquid.
  • the tolerances of the plurality of spray nozzles of the same type used on a spray bar have the consequence that at the same spray pressures. Theoretically and practically, with each spray nozzle used, one can deliver to the adjacent, different large amount of spray per unit time.
  • Figure 1 is a schematic side view of the spray dampening module according to the invention with both metering in, spray position;
  • FIG. 2 shows a schematic side view of the spray dampening module according to the invention with both metering orifices, in the spray shut-off position;
  • FIG. 3 shows a schematic side view of the spray dampening module according to the invention with only the left-hand controllable metering orifice, in the spray shut-off position and the motorized adjustment drive;
  • Figure 4 is a schematic side view of the spray dampening module according to the invention with only the right controllable metering orifice, in spray position and motorized adjustment;
  • FIG. 5 shows a schematic side view of the spray dampening module according to the invention with only the left-hand controllable metering orifice, in spray-closed position and manual adjustment drive;
  • FIG. 6 shows a schematic side view of the spray dampening module according to the invention with a controllable metering orifice and a cooperable, controllable cover in spraying position and manual adjustment drive;
  • Figure 7 is a schematic plan view of an inventive
  • Figure 8a is a schematic front view of a dosing with a non-straight top end with a non-straight edge
  • FIG. 8b shows a schematic side view of the metering orifice according to FIG. 8a.
  • the following description is a description of the objects in the view of their associated figures.
  • Each individual spray nozzle will have its own e.g. Due to the tolerances in length, cross-sectional shape, cross-sectional size and direction of the nozzle channel of the respective spray nozzle, the result is that, due to the predetermined spray distance from the nozzle orifice, different spray nozzles have different spray characteristics such as: liquid density, droplet size, spray pattern etc., which must be adjusted later.
  • the spray modules 01 according to the invention operate with spray nozzles 04, which spray continuously. This ensures at a predetermined dampening medium pressure in each case a "typical" formation of a spray pattern for each spray nozzle 04.
  • flat jet spray nozzles 04 which generate a flat jet 57, eg with an elliptical spray pattern or eg a flat jet with a rectangular spray pattern, are particularly suitable
  • the practical spray width 54 along a surface line of a lateral surface 02 is selected by selecting the size of the opening angle of the spray angle eta of the spray nozzle 04 and the spray nozzle
  • the spraying distance 54 corresponds to the respective injection length in millimeters along a generatrix on the lateral surface 03, for example in a range between 50 and 70 millimeters B between 15 ° and 150 °.
  • the invention is based on a method for spraying a liquid, such as fountain solution, on a lateral surface 02 of a rotating cylinder 03 or roller, such as a printing cylinder 03, an offset rotary printing machine with at least one spray nozzle 04, which generates a continuous, pressurized liquid spray 06 ,
  • This liquid or in particular dampening spray 06 is characterized by the kinetic energy inherent to the nozzle outlet in the direction of the co-rotating outer surface 02 of the cylinder 03 or roller between two opposing left metering orifice 12 and an right metering orifice cooperating therewith 13 formed dosing 11 moves.
  • the Dosierblenden 12,13 have ever, at their the outer surface facing the ends 02 and 14 a continuous left edge 16 and continuous right edge 17.
  • the metering orifices 12 and 13 are parallel or approximately parallel to the axis of rotation 21 of the cylinder or roller 03 at a short distance a (eg 0.3mm) on the circumference 05 out and from him movable.
  • the metering orifices 12, 13 are angled toward one another and can be moved individually or jointly in or counter to the direction of rotation of the cylinder or roller 03.
  • Both ends 14,15 and, edges 16 and 17 of the left-12 and right metering 13 can finally touch in a final position 18.
  • a Thomaswinkel- or wedge angle (delta) called between the two, along the two flat inner surfaces 28,40 of the metering orifices 12 and 13 spanned levels reached its smallest possible value.
  • both metering orifices 12 and 13 are moved so as to move away from each other for metering, so that between their edges 16 and 17 a rectangular exit slit 19 for the exit spray jet 57 of the liquid or dampening spray 06 in the direction to be humidified lateral surface 02 of the cylinder or roller 03.
  • the rectangular outlet gap 19 has an adjustable gap width (b), which may be between 0mm and 15 mm, for example.
  • the length I of the parallel to the axis of rotation 21 of the cylinder 03 extending exit gap 19 per spray nozzle 04 may for example be 50mm to 70mm, but also longer or shorter.
  • the length of the outlet gap 16 preferably corresponds to the distance of the centers of the outer nozzle opening in each case two adjacent spray nozzles 04.
  • the rectangular exit slit 19 is preferably at a small (for example, about 0.5 mm) distance a from the lateral surface 02.
  • the distance a varies according to the size of the pivoting angle of the metering orifice 12, 13.
  • the spray flat jet 57 of the spray nozzles 04 in contrast to the prior art, neither "topped” above, below, right or left by means of a sharp "barrier".
  • the spray flat jet 57 of the spray nozzles 04 act by the arrangement of at least on each of its inner side 22,23 flat surface in an acute angle of attack (delta) to each other extending metering orifices 12,13 as a hopper with a rectangular outlet. So a hopper with opposing flat walls.
  • the amount of dampening solution delivered per unit area through the exit slit 19 can be changed.
  • the spray module 01 preferably for wetting a rotating surface 02 of a cylinder 03 or roller, e.g. a printing cylinder, an offset rotary printing machine has at least one spray nozzle 04 for generating a continuous spray jet 57 of a spray 06.
  • the spray module 01 has a mounting space 07 between two mutually spaced shutters 08.09. They are directed in the direction of the lateral surface 02. To each other they run at an acute angle (wedge angle) theta.
  • a swiveling dosing orifice e.g. dispensed with the right metering orifice 13 and instead a rigid cover, e.g. the right cover 09, can be used.
  • a dosing space 11 separated from the mounting space 07 by at least one metering orifice 12, 13 oriented in the direction of the lateral surface 02 is formed.
  • the spraying direction 52 of the spray nozzle 04 is directed into the metering chamber 11.
  • the metering orifice 12 and / or 13 is in the mounting space 07, the metering space 11 increasing or decreasing in the direction of its opposite end cap, for example. 09 ( Figure 3) pivotally.
  • the dosage of the amount of liquid, for example, the amount of fountain solution, across the width of a printing plate, as well as the adaptation to the speed of the printing press can be done via at least one pivotable or elastically bendable metering 12 or13.
  • the metering orifices 12, 13 are preferably in the exemplary embodiment as stainless, flexurally elastic and metallic leaf springs executed.
  • the dosing 12,13 could also be made of high-strength flexurally elastic plastic.
  • the metering orifices 12, 13 are, for example, bent at an obtuse angle, with the folding line 32 being located, for example, at the beginning of the lower third of the length of the metering orifices 12, 13.
  • the angled embodiment of the metering orifices 12, 13 makes it possible to shorten the travel of the metering orifices 12, 13 because their adjustment does not have to be performed over their extended length.
  • - seen from its lower end 33, just before the Abkantline 32 is the force application of the adjusting devices 26; 27 on the metering 12 or 13 to deflect them from their respective position.
  • a hinge could also be provided along the imaginary bending line 32 between the lower third and the remaining two-thirds of the length of the metering orifices 12, 13. This design is however more expensive.
  • the last part 33 of the lower third of the metering orifices 12,13 is provided as an abutment of the leaf-spring-like metering orifices 12,13.
  • the lower end 33 of the metering orifice 12 is in a left terminal block 34
  • the lower end 30 of the right metering orifice 13 is mounted in a right-hand terminal block 30.
  • Both terminal strips 34 and 30 are spaced from each other at the bottom 46 of a U-shaped holder 47 attached.
  • On the outside e.g. of the left leg 38 of the U-shaped holder 47 is mounted against the environment sealed gear box 48. Inside the gearbox 48, there is the drive 49 for one or both metering orifices 12, 13.
  • the right leg 39 of the holder 47 is not occupied.
  • a tube 41 leads to the common supply of spray modules 01 lined up side by side with a pressurized liquid, eg wet liquid.
  • a pressurized liquid eg wet liquid.
  • the metering chamber 11 facing part a plurality of threaded through the pipe wall threaded holes are provided.
  • a spray nozzle 04 is connected in each case.
  • the interior of the tube 41 is continuously filled with a pressurized liquid, such as dampening solution.
  • Several spray modules 01 can be arranged and fastened next to one another on the feed pipe 41 and form a spray bar 42.
  • a left - 58 and a right side plate 59 is provided.
  • a left pad 61 is attached on the inner wall of the left side shield 58.
  • a right block 62 is attached on the inner wall of the right side shield 58.
  • In holes in the blocks 61,62 one end of the tube 41, which serves as a spray module 44, arranged rotationally fixed.
  • the following angle data with respect to the area of the spray jet direction angle gamma refer to a rectangular coordinate system whose zero point 0 coincides with the axis of rotation 21 of the cylinder 03 to be sprayed.
  • the spray bar 42 is provided with a plurality of mounted spray modules 01 each having a spray nozzle 04 with e.g. each carry a nozzle tip 25, provided.
  • the spray nozzles 04 each generate a spray jet 57 which is directed onto the lateral surface 02 and can be sprayed with a liquid, e.g. Moisture, wetted.
  • the spray direction 52 of the spray nozzle 04 is in each case inclined to the vertical that the "stray" liquid on the inner sides 28,60 of the shutters 08,09 in the space between the inside 28,60 of the cover 08 and 09 and outside 45,55 associated metering orifice 12 and 13 can run back in the direction of gravity, without disturbing the spray jet 57
  • the central jet 50 is the spray jet which passes through the nozzle bore center and moves along the spray direction 52.
  • the spray direction 52 of the spray nozzles 04 of the spray modules 01 and thus also the (theoretical) central jet 50 is therefore always aligned with the lateral surface 02 and the axis of rotation 21 of the cylinder 03 or at least directed.
  • the nozzle 04 is inclined to a, the rotation axis 21 intersecting horizontal plane so that the respective spray jet direction angle gamma, which is the angle between the horizontal plane and the central beam 50 of the nozzle 04, on the lateral surface 02 at an angle of 30 ° is directed to 150 °.
  • the practical spray width 54 corresponds to a fraction of the width of the lateral surface 02 of the cylinder 03.
  • the arrangement of the spray modules 01 and the spray bar 42 with the manner just described thus has the particular advantage that the "stray” liquid eg fountain solution does not greatly disturb the spray jet 57, because the "stray” liquid on the inner sides 28.60 the end covers 08,09 in the space between the inside 28,60 of the cover 08 and 09 and outside 45,55 of the associated metering orifice 12 and 13 can run back in the direction of gravity. An exception occurs as soon as the outer edge 16 or 17 with a straight extension on the cover plate 08 and 09 is sealingly applied.
  • the cover panels 08, 09 on their inner side 28, 60 and / or the metering panels 12, 13 on their outer side 40, 45 may preferably be provided with a coating that promotes dampening solution flow.
  • coatings are suitable Nanostructures on these surfaces, so-called nano coatings containing micro particles (nano particles). These surfaces become superhydrophobic (stray wet liquid droplets which reach the mentioned surfaces, form beads and run off easily) or super hydrophilic (stray wet liquid droplets which reach the mentioned surfaces, form a liquid film and possibly run off easily Principle of sharkskin shaped foil can be applied.
  • the spray pattern does not form linearly across the width in the case of the wet module 01 according to the invention and the spray quantity tolerance is also of the order of 5-10%, this can be compensated by the design and setting of the metering orifices 12, 13.
  • the dosage of the differently required amount of water in the printed image can be much more accurate by adjusting the metering 12,13.
  • the pivoting angles of the metering orifices 12 and 13 can be changed either manually by means of an adjusting screw 26 or each with an electromotive remote adjustment 28, 29.
  • edges 16, 17 of the dosing 12,13 need not be rectilinear. You can also choose another shape, e.g. be arcuate (see also Figures 8a, 8b).
  • the spray modules 01 are juxtaposed in a horizontal direction on a holding device 43, e.g. the pipe 41 are arranged and fixed to a spray bar 44.
  • the spray nozzles 04 can also be used to facilitate their rapid replacement, by means of so-called. Mounting clamps or so-called. Klappschellen be attached.
  • the cover panels 08, 09 extend at least over the width of a spray module 01. Preferably, they extend in several pieces over a plurality of spray modules 01 or in one piece over all the spray modules 01, ie over the entire length of the spray bar 42.
  • a return spring 24 for example, a pressure plate spring is provided. Their force application acts on the lower third of the length of the metering orifice 12,13 their abutment is attached to the bottom 46.
  • the return spring 24 has the task of pressing the metering orifice 12, 13 in the direction of the associated cover plate 08, 09.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spray Control Apparatus (AREA)

Abstract

La présente invention concerne un module de pulvérisation destiné à pulvériser sur une surface latérale d'un cylindre ou rouleau en rotation, par ex. d'un cylindre d'impression d'une presse rotative, un brouillard de liquide au moyen d'une buse de pulvérisation. Selon l'invention, la direction de pulvérisation de la buse de pulvérisation se trouve - vis-à-vis du plan horizontal - dans une zone d'un angle directionnel de jet de pulvérisation gamma valant de 30° à 150°.
EP09768822.0A 2008-06-28 2009-06-18 Module de pulvérisation sur une surface latérale d'un cylindre en rotation Not-in-force EP2393662B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008030779A DE102008030779A1 (de) 2008-06-28 2008-06-28 Sprühmodul für eine Offsetdruckmaschine
PCT/DE2009/000838 WO2009155898A2 (fr) 2008-06-28 2009-06-18 Module de pulvérisation sur une surface latérale d'un cylindre en rotation

Publications (2)

Publication Number Publication Date
EP2393662A2 true EP2393662A2 (fr) 2011-12-14
EP2393662B1 EP2393662B1 (fr) 2013-04-10

Family

ID=41168484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09768822.0A Not-in-force EP2393662B1 (fr) 2008-06-28 2009-06-18 Module de pulvérisation sur une surface latérale d'un cylindre en rotation

Country Status (5)

Country Link
US (1) US9067403B2 (fr)
EP (1) EP2393662B1 (fr)
CN (1) CN102112313B (fr)
DE (2) DE102008030779A1 (fr)
WO (1) WO2009155898A2 (fr)

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US20110197777A1 (en) * 2010-02-16 2011-08-18 Douglas Lowell Osterberg Variable print lithographic printing press
DE102012012622A1 (de) 2011-11-26 2013-05-29 Georg Schneider Verfahren und Sprühvorrichtung zum Aufbringen eines Feuchtmittels auf eine Mantelfläche eines rotierenden Zylinders einer Offset-Rotationsdruckmaschine
EP2809522B1 (fr) 2012-01-31 2018-04-18 HP Indigo B.V. Application d'un revêtement sur un support
US9032874B2 (en) * 2012-03-21 2015-05-19 Xerox Corporation Dampening fluid deposition by condensation in a digital lithographic system
CN102856011B (zh) * 2012-10-09 2015-04-29 上海熊猫线缆股份有限公司 单根铜丝尼龙护套电线加工方法
CN103691605B (zh) * 2013-12-06 2015-09-09 安徽江淮汽车股份有限公司 一种车身喷胶遮蔽装置及车身喷胶装置
CN103786421B (zh) * 2014-02-21 2017-01-18 中山火炬职业技术学院 胶印机离心式非接触润湿装置
CN104307654B (zh) * 2014-09-19 2016-08-17 北京北机机电工业有限责任公司 一种可调喷嘴
CN104209200B (zh) * 2014-09-19 2016-05-04 北京北机机电工业有限责任公司 一种可调节喷射面积的喷嘴
CN104384053B (zh) * 2014-10-11 2017-02-15 清华大学 用于清洗修整器的防溅射装置
CN113584433A (zh) * 2020-05-01 2021-11-02 密西根大学董事会 用于控制有机蒸气喷射印刷的气动挡板
WO2021226539A1 (fr) * 2020-05-08 2021-11-11 Prc-Desoto International, Inc. Masque et systèmes de régulation de pression d'air destinés à être utilisés dans le dépôt de revêtement
CN112892928A (zh) * 2021-01-20 2021-06-04 普晓电气科技有限公司 一种杆塔金具喷漆装置
CN113019766A (zh) * 2021-02-25 2021-06-25 东莞市智睿机械科技有限公司 一种可控精细喷胶轨迹的喷枪机构及运作方法

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Also Published As

Publication number Publication date
DE112009002142A5 (de) 2011-05-26
DE102008030779A1 (de) 2009-12-31
WO2009155898A4 (fr) 2010-05-14
EP2393662B1 (fr) 2013-04-10
US9067403B2 (en) 2015-06-30
WO2009155898A2 (fr) 2009-12-30
WO2009155898A3 (fr) 2010-03-18
US20110095098A1 (en) 2011-04-28
CN102112313B (zh) 2013-06-12
CN102112313A (zh) 2011-06-29

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