EP2015873A1 - Applikationselement für einen rotationszerstäuber und zugehöriges betriebsverfahren - Google Patents
Applikationselement für einen rotationszerstäuber und zugehöriges betriebsverfahrenInfo
- Publication number
- EP2015873A1 EP2015873A1 EP07724942A EP07724942A EP2015873A1 EP 2015873 A1 EP2015873 A1 EP 2015873A1 EP 07724942 A EP07724942 A EP 07724942A EP 07724942 A EP07724942 A EP 07724942A EP 2015873 A1 EP2015873 A1 EP 2015873A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- surface layer
- application element
- paint
- overflow surface
- film
- 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
Links
- 238000011017 operating method Methods 0.000 title claims abstract description 10
- 239000003973 paint Substances 0.000 claims abstract description 53
- 239000002344 surface layer Substances 0.000 claims abstract description 50
- 239000002245 particle Substances 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 28
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims description 45
- 239000002966 varnish Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 238000005299 abrasion Methods 0.000 claims description 9
- 238000010422 painting Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 230000003746 surface roughness Effects 0.000 claims description 5
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 238000004544 sputter deposition Methods 0.000 claims description 3
- CYKMNKXPYXUVPR-UHFFFAOYSA-N [C].[Ti] Chemical compound [C].[Ti] CYKMNKXPYXUVPR-UHFFFAOYSA-N 0.000 claims description 2
- MEOSMFUUJVIIKB-UHFFFAOYSA-N [W].[C] Chemical compound [W].[C] MEOSMFUUJVIIKB-UHFFFAOYSA-N 0.000 claims description 2
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims description 2
- SJKRCWUQJZIWQB-UHFFFAOYSA-N azane;chromium Chemical compound N.[Cr] SJKRCWUQJZIWQB-UHFFFAOYSA-N 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000002105 nanoparticle Substances 0.000 claims description 2
- ZVWKZXLXHLZXLS-UHFFFAOYSA-N zirconium nitride Chemical compound [Zr]#N ZVWKZXLXHLZXLS-UHFFFAOYSA-N 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 10
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 11
- 239000004922 lacquer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 241000251730 Chondrichthyes Species 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
- B05B3/1014—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
-
- 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
- B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
- B05B15/18—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for improving resistance to wear, e.g. inserts or coatings; for indicating wear; for handling or replacing worn parts
Definitions
- the invention relates to an application element for a rotary atomizer, in particular in the form of a bell cup or a rotary disk, as well as an associated operating method according to the independent claims.
- Such a bell cup is known from EP 0 951 942 A2, which is specially intended for the coating of effect lacquers containing solid effect particles, which are also referred to as effect pigments or "flakes".
- the coating materials used are therefore preliminarily adjusted in their recipe so that after their different processing again equivalent results.
- the thus required preparatory pigment correction represents a considerable material and organizational additional effort.
- the color matching ability must be controlled in a batch change of paint supplies.
- the required refinish paints are manual repair of small quantities with limited shelf life and hard-to-calculate demand quantity, so that the costs per liter are significantly higher than the material costs for the normal automatic coating application with the high-speed rotary atomizer.
- the need for manual rectification can not be removed from the usual production loop, so that must be kept ready for all production coatings corresponding refinishes and kept for mixing with agitators in motion.
- JP 08155348 a bell cup is known, the overflow surface is coated with a surface layer of Fluororesin, which is intended to improve the flushing.
- this bell cup also has the above-mentioned disadvantages in an application of effect paints.
- DE 93 15 890 U1 discloses rotary atomizers in which the coating powder to be applied is triboelectrically rubbed by friction on an artificial surface. Fabric surface is charged.
- the overflow surface of the bell cup has a surface layer of polytetrafluoroethylene (PTFE), which on the other hand ensures good triboelectric charging of the coating powder due to the friction between the coating powder flowing over the overflow surface on the one hand and the PTFE surface layer on the other hand.
- PTFE polytetrafluoroethylene
- the invention is therefore an object of the invention to provide a bell cup, which is as well suited for a low-damage effect particles for application of effect coatings.
- the inventors have recognized for the first time that the interfacial friction between the paint film and the overflow surface leads to great frictional and shear forces in the paint film, which deform the thin, flat effect particles of the effect paint and damage their surface, resulting in the disturbing effects described above Color deviations leads.
- the boundary surface friction between the paint film and the overflow surface leads to relatively thick paint films, so that the thin, flat effect particles ("flakes") set up within the paint film. Furthermore, the interfacial friction can also cause the effect articles to move, especially at a length of e.g. 100 microns and a thickness of about 1 micron. In this case, the effect particles can be damaged by surface abrasion and breakage, which impairs the desired shade (optical effect of the applied lacquer). On the other hand, the inventive reduction of the boundary surface friction between the paint film on the overflow surface makes it possible to prevent the damage and damage caused by friction and damage to the effect particles.
- the surface coating in the invention thus deliberately causes a reduction in the interfacial friction, whereas the surface coating in the known bell-shaped plates only causes the abrasion. should increase the abrasion resistance or is required for a triboelectric charging.
- the interfacial friction between the paint film and the overflow surface is reduced by reducing the surface roughness of the surface layer on the overflow surface.
- the surface roughness of the surface layer of the overflow surface is less than the film thickness of the coating medium film.
- the surface roughness of the surface layer of the overflow surface may be smaller than 200 ⁇ m, 100 ⁇ m, 50 ⁇ m, 10 ⁇ m or even 5 ⁇ m.
- the boundary surface friction between the paint film on the one hand and the surface layer of the overflow surface on the other hand reduced by the overflow surface has a friction-reducing texture, which may be, for example, a so-called riblet structure or a so-called artificial shark skin, which is known per se and therefore need not be described in detail.
- a friction-reducing sharkskin film is available, for example, from the company 3M under the name "Scotchcal Marine Drag Reduction Tape".
- the coating agent material to be sputtered
- the coating agent is an effect varnish containing flat, fixed particle size particles ("flakes") having a paint film on the surface layer of the overflow surface, the interfacial friction is lowered so that the paint film has a film thickness which is smaller than the particle length of the effect particles.
- the paint film on the overflow surface therefore has a film thickness during operation which is preferably less than 200 ⁇ m, 100 ⁇ m, 50 ⁇ m, 10 ⁇ m or even 5 ⁇ m.
- the surface layer on the overflow surface is at least partially made of a nitride, such as titanium nitride, chromium nitride, titanium carbon nitride, zirconium nitride, tungsten carbon nitride, and aluminum titanium nitride
- a nitride such as titanium nitride, chromium nitride, titanium carbon nitride, zirconium nitride, tungsten carbon nitride, and aluminum titanium nitride
- Materials for the surface layer of the overcurrent surface are suitable.
- the surface layer on the overflow surface consists at least partially of glass, ceramic, metal or so-called nanoparticles. In principle, however, all chemically neutral, mechanically stable and adhering materials are suitable as material for the friction-reducing surface layer.
- the friction-reducing surface layer is preferably provided locally limited to the entire overflow surface and / or other Lackmannflachen.
- the friction-reducing surface layer is limited to those areas of the overflow surface, which are exposed to high centrifugal forces during operation.
- the entire rotating application element is coated with a rubbing-reducing surface layer.
- the surface layer of the overflow surface is preferably more resistant to abrasion and / or harder than the uncoated overflow surface in order to improve the abrasion behavior of the overflow surface and thus the service life of the application element.
- the surface layer of the overcurrent surface has preferably a Vickers hardness of more than 500 HV, 1000 HV, 1500 HV, 2000 HV or even more than 3000 HV.
- the surface layer of the overflow surface preferably consists of a different material than the overflow surface underneath.
- the surface layer of the overflow surface consists of the same material as the overflow surface underneath.
- the boundary friction can be reduced for example by a suitable surface texture of the surface layer.
- the surface layer of the overflow surface may consist of a film applied to the overflow surface, which may be, for example, a so-called shark skin film used in aircraft construction to reduce frictional resistance and has already been mentioned above.
- the application element according to the invention is preferably a bell cup for a high-rotation atomizer.
- the invention is not limited to bell plates in terms of the type of application element, but also includes, for example, so-called rotary discs for disc atomizers.
- Pavel Svejda for example: "Modern painting technology, processes and application processes", Vincentz-Verlag 2003, page 75 f. known.
- the invention comprises not only the above-described inventive application element as a single component, but also a rotary atomizer with such an application element and a painting machine, in particular a multi-axis painting robot, with such a rotary atomizer.
- the invention also encompasses a corresponding operating method for such a rotary atomizer, in which the boundary surface friction between the coating agent film on the overflow surface and the overflow surface itself is deliberately reduced by a friction-reducing surface layer.
- the boundary surface friction is preferably reduced to such an extent that the thickness of the paint film on the overflow surface decreases so much that the film thickness is smaller than the particle length of the effect particles (so-called "flakes", to be distinguished from pigments), so that the effect particles can not be set up within the lacquer layer.
- the invention offers the advantage that an effect varnish can be applied automatically by a rotary atomizer without the need for specific varnishes without impairing the efficiency without increasing the air consumption due to increased steering air values, so that the color tone result without correction is the same for the same varnish material the paint formulation of the quality of compressed air atomization can be adapted.
- Figure 1 is a cross-sectional view of a bell cup according to the invention for the application of an effect varnish
- FIG. 2 shows a greatly enlarged cross-sectional view of the overflow surface of the bell cup from FIG. 1.
- FIG. 1 shows a bell cup 1 for a high-rotation atomizer for the application of an effect varnish.
- the construction and operation of the bell cup 1 is largely conventional and described in EP 0 951 942 A2, so that the content of this document is to be ascribed to the present description with regard to the construction and operation of the bell cup 1 to the full extent.
- the bell cup 1 To attach the bell cup 1 to a bell-plate shaft of a high-speed rotary atomizer, the bell cup 1 has a mounting hub 2, which is provided with an external thread which is screwed into a correspondingly adapted internal thread of the bellcylinder shaft.
- a deflection part 4 which has a centrally arranged and radially extending rear surface 5 and an outer, conically extending rear surface 6.
- the two rear surfaces 5, 6 of the deflecting part 4 form a boundary surface of a gap, which on the opposite side from a rich 7 an otherwise conical overflow surface 8 is formed.
- the overflow surface 8 encloses a nearly constant angle ⁇ with the end face of the bell cup 1 and leads to an annular spray discharge edge 9.
- the effect paint is thus fed axially to the bell cup 1 via the attachment hub 2 and then passes through the center opening 3 in the bell cup 1.
- the deflecting part 4 then deflects the effect varnish in the radial direction, so that the effect varnish flows over the overflow surface 8 and is finally thrown off at the spray-off edge 9.
- FIG. 2 shows the overflow surface 8 with a paint film 10 thereon and a friction-reducing surface layer 11 located therebetween. Furthermore, it can be seen from the cross-sectional illustration that the paint film 10 has numerous long, flat effect particles 12 with a certain particle length L PARTI KEL.
- the friction-reducing surface layer 11 on the overflow surface 8 reduces the boundary surface friction between the paint film 10 and the surface layer 11 or Matterströmflache 8 in this case so far that caused by abrasion and cracking damage to the effect particles are prevented, thereby causing color deviations compared to other sputtering prevent and avoid necessary adjustment expenses
- the friction-reducing surface layer 11 has a layer thickness dsc H icH T , which is substantially smaller than the film thickness d LA c ⁇ of the lacquer layer 10.
- the particle size L PARTICLE i TM range of L PARTI K EL 10 ... 40 .mu.m
- the invention is not limited to the above values, but can also be implemented with other values of the particle size LpARTiKEw of the film thickness d LAC ⁇ and the layer thickness dscHicHT.
- the friction-reducing surface layer 11 in this exemplary embodiment consists of titanium nitride and reduces the interfacial friction between the lacquer layer 10 and the overflow surface 8 by a factor of 4.
Landscapes
- Nozzles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Glanulating (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Control Of Electric Motors In General (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07724942T PL2015873T3 (pl) | 2006-05-11 | 2007-05-07 | Element aplikujący do rozpylacza rotacyjnego i przynależny sposób pracy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006022057A DE102006022057B3 (de) | 2006-05-11 | 2006-05-11 | Applikationselement für einen Rotationszerstäuber und zugehöriges Betriebsverfahren |
PCT/EP2007/004018 WO2007131661A1 (de) | 2006-05-11 | 2007-05-07 | Applikationselement für einen rotationszerstäuber und zugehöriges betriebsverfahren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2015873A1 true EP2015873A1 (de) | 2009-01-21 |
EP2015873B1 EP2015873B1 (de) | 2011-07-27 |
Family
ID=38294064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07724942A Active EP2015873B1 (de) | 2006-05-11 | 2007-05-07 | Applikationselement für einen rotationszerstäuber und zugehöriges betriebsverfahren |
Country Status (14)
Country | Link |
---|---|
US (1) | US7837135B2 (de) |
EP (1) | EP2015873B1 (de) |
JP (1) | JP5412278B2 (de) |
CN (1) | CN101443127B (de) |
AT (1) | ATE517691T1 (de) |
BR (1) | BRPI0711361B1 (de) |
DE (1) | DE102006022057B3 (de) |
ES (1) | ES2369014T3 (de) |
MX (1) | MX2008014225A (de) |
PL (1) | PL2015873T3 (de) |
PT (1) | PT2015873E (de) |
RU (1) | RU2430790C2 (de) |
WO (1) | WO2007131661A1 (de) |
ZA (1) | ZA200810057B (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006057596A1 (de) | 2006-12-06 | 2008-06-19 | Dürr Systems GmbH | Lenkluftring mit einer Ringmulde und entsprechender Glockenteller |
US10155233B2 (en) * | 2008-04-09 | 2018-12-18 | Carlisle Fluid Technologies, Inc. | Splash plate retention method and apparatus |
DE102008056411A1 (de) * | 2008-11-07 | 2010-05-20 | Dürr Systems GmbH | Beschichtungsanlagenbauteil, insbesondere Glockenteller, und entsprechendes Herstellungsverfahren |
DE102009042955A1 (de) * | 2009-09-24 | 2011-04-07 | Dürr Systems GmbH | Verfahren zur Funktionskontrolle eines Rotationszerstäubers und entsprechende Beschichtungsanlage |
DE102009057444A1 (de) | 2009-12-08 | 2011-06-09 | Dürr Systems GmbH | Lackieranlagenbauteil mit einer Oberflächenbeschichtung |
DE102012010610A1 (de) * | 2012-05-30 | 2013-12-05 | Eisenmann Ag | Verfahren zum Betreiben eines Rotationszerstäubers, Düsenkopf und Rotationszerstäuber mit einem solchen |
US8851397B1 (en) * | 2013-11-14 | 2014-10-07 | Efc Systems, Inc. | Bell cup atomizer having improved cleaning capability |
DE102015004066A1 (de) * | 2015-03-28 | 2016-09-29 | Eisenmann Se | Wellenelement eines Luftlagers, Luftlager und Rotationszerstäuber |
GB2563054B (en) * | 2017-06-01 | 2022-04-20 | Novanta Tech Uk Limited | Rotary atomiser bell cups |
CN113575230B (zh) * | 2021-09-16 | 2023-07-14 | 荆门市鑫盛食品科技有限公司 | 一种大棚种植组合灌溉系统 |
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-
2006
- 2006-05-11 DE DE102006022057A patent/DE102006022057B3/de active Active
-
2007
- 2007-05-07 US US12/300,272 patent/US7837135B2/en active Active
- 2007-05-07 PL PL07724942T patent/PL2015873T3/pl unknown
- 2007-05-07 EP EP07724942A patent/EP2015873B1/de active Active
- 2007-05-07 JP JP2009508234A patent/JP5412278B2/ja active Active
- 2007-05-07 BR BRPI0711361-7A patent/BRPI0711361B1/pt active IP Right Grant
- 2007-05-07 ZA ZA200810057A patent/ZA200810057B/xx unknown
- 2007-05-07 MX MX2008014225A patent/MX2008014225A/es active IP Right Grant
- 2007-05-07 AT AT07724942T patent/ATE517691T1/de active
- 2007-05-07 RU RU2008148829/05A patent/RU2430790C2/ru active
- 2007-05-07 WO PCT/EP2007/004018 patent/WO2007131661A1/de active Application Filing
- 2007-05-07 ES ES07724942T patent/ES2369014T3/es active Active
- 2007-05-07 PT PT07724942T patent/PT2015873E/pt unknown
- 2007-05-07 CN CN2007800171145A patent/CN101443127B/zh active Active
Non-Patent Citations (1)
Title |
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See references of WO2007131661A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL2015873T3 (pl) | 2011-12-30 |
RU2008148829A (ru) | 2010-06-20 |
ES2369014T3 (es) | 2011-11-24 |
EP2015873B1 (de) | 2011-07-27 |
CN101443127B (zh) | 2013-08-28 |
DE102006022057B3 (de) | 2007-10-31 |
MX2008014225A (es) | 2009-01-29 |
JP2009536569A (ja) | 2009-10-15 |
JP5412278B2 (ja) | 2014-02-12 |
BRPI0711361B1 (pt) | 2020-02-11 |
ATE517691T1 (de) | 2011-08-15 |
PT2015873E (pt) | 2011-11-02 |
US20090212122A1 (en) | 2009-08-27 |
CN101443127A (zh) | 2009-05-27 |
US7837135B2 (en) | 2010-11-23 |
BRPI0711361A2 (pt) | 2012-07-24 |
RU2430790C2 (ru) | 2011-10-10 |
ZA200810057B (en) | 2010-03-31 |
WO2007131661A1 (de) | 2007-11-22 |
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