Classifications

• • 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
• • 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
  • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
• • 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

Definitions

• the invention relates to a painting plant component, in particular a bell cup for a rotary atomizer, according to the preamble of claim 1. Furthermore, the invention comprises a corresponding manufacturing method.
• the surfaces, in particular the overflow surfaces, of the conventional bell cup are subject to wear by corrosion and / or abrasion, whereby the surface roughness is increased, which in turn increases the requirements for cleaning the bell cup.
• From DE 101 12 854 AI it is known to coat the surface of such a bell cup to increase the abrasion resistance and thereby reduce wear.
• these known surface coatings do not solve the problem of fouling tendency or the lack of cleaning ability of the bell cup.
• the invention is therefore based on the object to reduce the pollution tendency of a bell cup
• a painting installation component for example, bell cup
• a surface layer which reduces the tendency to fouling and / or improves the cleaning capability.
• the main body itself may consist, for example, of aluminum or an aluminum alloy, titanium, steel, stainless steel, non-ferrous metal (copper and its alloys), ceramic, plastic or a combination of these materials.
• the surface layer may in the context of the invention contain oxides, nitrides and / or carbides, for example, boron, molybdenum, tantalum, niobium, vanadium, zirconium, silicon, chromium, titanium, carbon, nickel and fluorine compounds as (base) materials for the Surface layer are suitable.
• the surface layer consists of a material based on Si-O, Si-OH or silicon-organic compounds, in particular in the form of a nanolayer, as will be described in detail.
• the surface layer preferably contains metal oxides, metal nitrides or organometallic compound.
• the surface layer may optionally consist of an organic, in particular metal-organic material or of an inorganic material.
• the surface layer may be either hydrophilic or hydrophobic.
• a hydrophilic surface layer is characterized by a contact angle with respect to water which is less than 90 °, 45 °, 20 °, 10 °, 8 ° or even less than 6 °.
• the surface layer may even be superhydrophilic, with the surface layer then being characterized by a contact angle with water of less than 5 °, 3 °, 2 °, or even less than 1 °.
• the contact angle with respect to water is preferably greater than 90 °, 110 °, 130 ° or 150 °.
• the surface layer is superhydrophobic, wherein the contact angle with respect to water is greater than 160 °, 180 °, 200 ° or even 220 °.
• the surface layer is a so-called nano-layer.
• Such nanosheets are known per se from the prior art and therefore need not be described in detail. the.
• nanolayers generally consist of nanoparticles with a size of less than 100 nm, which settle in the surface roughness and thereby seal the surface, resulting in a significantly reduced surface roughness.
• the term nanolayer used in the context of the invention therefore preferably refers to a surface layer which contains particles whose particle size is in the nanometer range.
• the nano-layer has a layer thickness which is in the nanometer range.
• WO 96/04123 A1 discloses a self-cleaning component surface which, in order to achieve the self-cleaning effect, combines a microstructure with a hydrophobic coating.
• the content of this patent application is therefore attributable to the available description in its entirety.
• the surface layer according to the invention can fulfill a further technical function by the Oberflä chen für, for example, is wear-reducing, which in itself from the already cited patent application DE 101 12 854 AI is known.
• the surface of the base body for this purpose with radiation techniques eg water jets, ceramic bead jets, glass beads, etc.
• radiation techniques eg water jets, ceramic bead jets, glass beads, etc.
• the surface of the main body is irradiated or etched with a laser to produce the desired material properties.
• the surface layer is produced by plasma processes, for example by plasma-electrolytic oxidation (PEO technology).
• the base body and the surface layer consist of different starting materials, the surface layer being applied to the base body as a surface coating.
• this application of the surface layer can be done by physical vapor deposition (PVD) or by other methods.
• CVD chemical vapor deposition
• etching etching
• laser irradiation ion implantation
• blasting techniques eg water jets, ceramic bead blasting, glass bead blasting
• conventional coating methods such as spraying, dipping, Spraying, brushing, which are particularly suitable for applying organic surface layers.
• the surface layer has a plurality of areas which are separated from each other and have different properties.
• the surface layer can be optimized to a maximum abrasion resistance as far as possible, whereas the good cleaning ability at such locations is given a lower priority.
• the surface layer can be optimized for the lowest possible tendency to become soiled, whereas the abrasion resistance in these areas is given only a lower priority.
• the surface layer may consist of a material with a high, medium or low surface friction.
• the surface layer may consist of a material with a high ductility, in particular with an elongation at break of more than 5% or 10%.
• the surface layer may consist of a material with a middle Ductility, in particular with an elongation at break between 0.5 and 5%.
• the surface layer consists of a material with a low ductility, in particular with an elongation at break of less than 0.5%, 0.3% or 0.1%.
• the surface layer can optionally consist of a material with a high, medium or low abrasion resistance.
• the corrosion resistance of the surface layer can optionally consist of a material with a high, medium or small corrosion resistance.
• Corrosion resistance is particularly important when the painting equipment component (e.g., bell cup) is made of non-ferrous metal (copper and its alloys), since non-ferrous metals also corrode in combination with demineralized water (deionized water). This is important because demineralised water is contained in water-based paints and water-based detergents, so that non-ferrous metal dish plates must be coated with a corrosion-resistant surface layer.
• the painting equipment component e.g., bell cup
• demineralized water deionized water
• the abovementioned possibilities of material properties can also be combined in a targeted manner in order to achieve certain properties.
• the cleaning-optimizing surface layer covers the entire surface of the base body. In another variant of the invention, however, the cleaning-optimizing surface layer covers only outer surfaces of the base body. In a bell cup, the outer surface and / or the rear side of the main body are then preferably coated with the surface layer.
• a bell cup may be an overflow surface.
• the surface layer covers the surface of the base body only on partial areas that require an optimization of the cleaning properties shafts. For example, these may be the areas of the lateral surface and the overflow surface that are directly adjacent to the spray-off edge.
• the inventive principle of optimizing the propensity to fouling or the cleaning ability is not only suitable for bell cups of rotary atomizers, but is also suitable for other paint-carrying components, such as valve housings or valve needles.
• the invention is also suitable for ameliorating other paint shop components that come into contact with a coating agent in use, such as atomizers (e.g., rotary atomizers), robotic hand axes, robotic arms, or flanges.
• the invention is suitable for improving the cleanability or the contamination tendency of components of a painting robot or a handling robot (for example door opener, hood opener).
• the invention is also suitable for reducing the tendency to fouling or for improving the cleanability of components of a paint booth, such as covers, gratings, conveyors, window panes, wall elements or exhaust air ducts.
• the invention is not limited to a single paint shop component (eg bell cup), which is optimized with regard to its tendency to fouling or cleanability. Rather, the invention also includes a rotary atomizer with an inventively optimized bell cup and a complete painting robot with such a rotary atomizer. Finally, the invention also encompasses a production method for the production of an inventively optimized paint shop component (eg bell cup), as already apparent from the above description.
• Figure 1 is a cross-sectional view of an inventive
• Figure 2 is a cross-sectional view of an inventive
• Figure 3 is a cross-sectional view of an inventive
• FIG. 4 shows a cross-sectional view through another exemplary embodiment of a bell cup according to the invention, the surface layer covering the entire bell cup, as well as FIG. 4
• Figure 5 is a cross-sectional view of a device according to the invention.
• FIG. 1 shows a largely conventional bell cup 1 for a rotary atomizer 2, wherein the bell cup 1 rotates about a rotation axis 3 in operation.
• the paint to be applied is the bell cup 1 in this case fed through a paint tube and then hits axially on a baffle plate 4, which deflects the paint in the radial direction.
• the paint then flows along an overflow surface 5 to an annular peripheral spray-off edge 6, at which the paint is sprayed.
• the bell cup 1 on its outer side a conical lateral surface 7, which is also known per se from the prior art.
• the bell cup 1 is coated on its surface with a surface layer which reduces the tendency to fouling and improves the cleaning ability.
• This surface layer is in this case applied to the overflow surface 5 and the paint-carrying inner surfaces of the bell cup 1 and also extends over the entire lateral surface 7.
• the entire surface of the bell cup 1 with the surface coating is sealed.
• the surface layer of the invention contains in this embodiment, a nano-layer, which realizes a lotus effect, so that the bell cup 1 is self-cleaning and possibly requires a short cleaning.
• the embodiment according to FIG. 2 largely corresponds to the exemplary embodiment described above, in the same way in order to avoid repetition, reference is made to the above description, wherein the same reference numerals are used for corresponding details.
• a special feature of this embodiment is that the bell cup 1 has a surface layer 8 only in the region of its spray-off edge 6, the surface layer 8 being located both on the overflow surface 5 and on the outer jacket surface 7.
• a region 9 which is provided with a surface layer, which reduces the tendency to fouling and improves the cleaning ability.
• FIG. 3 largely corresponds to the exemplary embodiments described above, so that reference is made to the above description in order to avoid repetition, the same reference numerals being used for corresponding details.
• This embodiment is characterized in that the surface layer covers only the outer circumferential surface 7 and the back of the bell cup 1, whereas the overflow surface 5 and the inner surface of the bell cup 1 remain uncoated.
• FIG. 4 in turn largely corresponds to the exemplary embodiments described above, so that reference is made to the above description in order to avoid repetition.
• This embodiment is characterized in that the bell cup 1 complete with the surface layer. 8 is sealed. This means that the entire surface of the bell cup 1 is covered by the surface layer 8. Also, the embodiment of Figure 5 is largely consistent with the embodiments described above, so reference is made to avoid repetition of the above description. A special feature of this embodiment is that only the overflow surface 5 and the inner surface of the bell cup 1 is coated with the surface layer.

Landscapes

• Application Of Or Painting With Fluid Materials (AREA)
• Nozzles (AREA)
• Laminated Bodies (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (7)

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Citations (2)

Family Cites Families (39)

• 2009
  • 2009-12-08 DE DE102009057444A patent/DE102009057444A1/de not_active Withdrawn
• 2010
  • 2010-12-03 WO PCT/EP2010/007356 patent/WO2011069622A2/de active Application Filing
  • 2010-12-03 HU HUE10787321A patent/HUE038951T2/hu unknown
  • 2010-12-03 ES ES10787321T patent/ES2668093T5/es active Active
  • 2010-12-03 ES ES13001691T patent/ES2667320T5/es active Active
  • 2010-12-03 EP EP10787321.8A patent/EP2509714B2/de active Active
  • 2010-12-03 HU HUE13001691A patent/HUE037576T2/hu unknown
  • 2010-12-03 US US13/514,454 patent/US9731311B2/en active Active
  • 2010-12-03 CN CN201080055783.3A patent/CN102712005B/zh active Active
  • 2010-12-03 EP EP13001691.8A patent/EP2612710B2/de active Active

Patent Citations (2)

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