EP4377016A1 - Coupelle en cloche, pulvérisateur centrifuge comportant la coupelle en cloche, installation de peinture et procédé de peinture correspondant - Google Patents

Coupelle en cloche, pulvérisateur centrifuge comportant la coupelle en cloche, installation de peinture et procédé de peinture correspondant

Info

Publication number
EP4377016A1
EP4377016A1 EP22783522.0A EP22783522A EP4377016A1 EP 4377016 A1 EP4377016 A1 EP 4377016A1 EP 22783522 A EP22783522 A EP 22783522A EP 4377016 A1 EP4377016 A1 EP 4377016A1
Authority
EP
European Patent Office
Prior art keywords
bell cup
painting
shaping air
section
rotation
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.)
Pending
Application number
EP22783522.0A
Other languages
German (de)
English (en)
Inventor
Andreas Fischer
Peter Marquardt
Hans-Jürgen Nolte
Marijo Bandic
Oliver Herrmann
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.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
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 Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP4377016A1 publication Critical patent/EP4377016A1/fr
Pending legal-status Critical Current

Links

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
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
    • B05B13/0452—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the conveyed articles being vehicle bodies
    • 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
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • 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
    • B05B3/1064—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 the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
    • 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
    • B05B3/1092—Means for supplying shaping gas

Definitions

  • the invention relates to a bell cup for a rotary atomizer for painting components (e.g. motor vehicle body components). Furthermore, the invention relates to a rotary atomizer with such a bell cup. Furthermore, the invention also includes a paint shop with the rotary atomizer according to the invention. Finally, the invention also includes a corresponding painting process.
  • rotary atomizers are usually used as application devices, which drive a bell cup at high speed by means of a compressed air turbine, with the bell cup spraying off the paint to be applied.
  • An example of such a bell plate is known from WO 2011/018169 A1.
  • the outer lateral surface of the bell cup is conically shaped and therefore has an angle of inclination relative to the axis of rotation of the bell cup, which angle is essentially constant along the bell cup.
  • the lateral surface of the bell cup is therefore continuous with a uniform angle of inclination and is not divided into different lateral sections.
  • the invention is therefore based on the object of creating a correspondingly improved bell cup, an associated rotary atomizer and a corresponding painting system. Furthermore, the invention is based on the object of specifying a corresponding painting method.
  • the structural design of the bell cup according to the invention described below preferably offers the possibility of using the bell cup for a wide variety of application tasks, such as for painting motor vehicle bodies on the one hand and for painting add-on parts on the other.
  • application tasks such as for painting motor vehicle bodies on the one hand and for painting add-on parts on the other.
  • the various possible application tasks are described in detail later.
  • the bell cup according to the invention initially has, in accordance with the known bell cup described at the outset, a fastening interface (e.g. hub) in order to be able to mount the bell cup on a rotary atomizer, so that the bell cup can be rotated about an axis of rotation.
  • a fastening interface e.g. hub
  • the bell cup can be screwed with its attachment interface (e.g. hub) onto a hollow turbine shaft of a compressed air turbine in the rotary atomizer.
  • the invention is not limited to such a screw connection.
  • the bell cup according to the invention in accordance with the known bell cups described at the outset, also has an annular, circumferential spraying edge in order to spray off the paint to be applied in the form of a spray jet. Furthermore, the bell cup according to the invention also has a peripheral outer lateral surface which widens along the axis of rotation in the distal direction towards the spray-off edge.
  • the bell cup according to the invention is characterized by the design of this outer lateral surface.
  • this outer lateral surface is uniform and has a substantially constant angle of inclination to the axis of rotation of the bell cup.
  • the outer lateral surface of the bell cup is therefore not divided into different casing sections in the known bell cup.
  • the bell cup according to the invention is distinguished from the prior art in that the outer surface of the bell cup is divided along the axis of rotation into a plurality of casing sections, namely a central casing section and a distal casing section.
  • the central shell section is conical in shape, as is also the case with the known bell cup described at the outset.
  • the distal jacket section of the bell cup can be optionally conical or cylindrical in the bell cup according to the invention.
  • the various shell sections of the outer shell surface of the bell cup differ in their angle of inclination to the axis of rotation of the bell cup.
  • the conical central jacket section has a first angle of inclination to the axis of rotation, which is preferably greater than the second angle of inclination of the distal jacket section.
  • the proximal jacket section is therefore more angled to the axis of rotation than the distal jacket section.
  • the bell cup according to the invention can have a further proximal casing section in its lateral surface, which is angled differently with respect to the axis of rotation of the bell cup than the central casing section.
  • the outer surface of the bell cup has at least three casing sections that follow one another along the axis of rotation of the bell cup and can directly adjoin one another, namely first a proximal casing section, followed by a middle casing section and finally a distal casing section.
  • the outer surface of the bell cup even has at least four different casing sections, which follow one another along the axis of rotation of the bell cup and can directly adjoin one another, namely first a so-called hub section on the hub side, then the proximal casing section, followed by the middle casing section and finally the distal casing section .
  • the hub section is preferably angled more sharply to the axis of rotation than the adjacent proximal casing section.
  • the distal jacket section of the outer jacket surface of the bell cup is preferably directly adjacent to the spray-off edge of the bell cup, ie the distal jacket section preferably merges directly into the spray-off edge.
  • the middle jacket section of the outer jacket surface of the bell cup preferably borders directly on the distal jacket section, in particular with a kink between the distal jacket section and the middle jacket section.
  • the kink is here caused by the different angles of inclination of the central jacket section on the one hand and the distal jacket section on the other hand.
  • the proximal jacket section of the outer jacket surface of the bell cup preferably borders directly on the middle jacket section, in particular with a kink between the proximal jacket section on the one hand and the middle jacket section on the other. This kink is also caused by the different angles of inclination of the proximal casing section on the one hand and the central casing section on the other hand.
  • the proximal casing section of the outer casing surface of the bell cup preferably directly adjoins the so-called hub section, in particular with a kink between the proximal casing section on the one hand and the hub section on the other. This kink is also caused by the different angles of inclination of the proximal casing section on the one hand and the hub section on the other.
  • the hub portion of the outer surface of the bell cup is preferably angled more strongly to the axis of rotation of the bell cup than the proximal casing portion.
  • the first angle of inclination of the central casing section relative to the axis of rotation of the bell cup is preferably in the range of 25°-45° or 27°-30°, with an angle of inclination of 30° having proved to be particularly advantageous.
  • the second angle of inclination of the distal casing section is preferably in the range of 0°-10° or 0°-5° relative to the axis of rotation of the bell cup, with an angle of inclination of 0° having proven to be particularly advantageous.
  • the distal jacket section of the outer jacket surface of the bell cup therefore preferably runs parallel to the axis of rotation of the bell cup.
  • the central skirt portion preferably has an axial length along the axis of rotation of the bell cup which is in the range of 0mm-10mm or 1mm-5mm.
  • the distal jacket section of the outer jacket surface of the bell cup preferably has an axial length along the axis of rotation of the bell cup which is in the range of 0 mm to 2 mm.
  • the bell cup according to the invention preferably also has a centrally arranged paint feed in order to feed in the paint to be applied, as is known per se from the prior art.
  • the bell cup can be mounted with its hub on a hollow turbine shaft of the rotary atomizer, with a paint nozzle protruding axially through the turbine shaft to the bell cup and feeding the paint to be applied centrally, as is known from the prior art.
  • the bell cup according to the invention can also have an end-side overflow surface that leads to the spray edge, so that the paint to be applied during operation flows out of the central paint feed via the overflow surface to the spray edge of the bell cup.
  • this overflow area preferably widens conically along the axis of rotation in the direction of spraying.
  • the overflow surface can have a substantially constant angle of inclination to the axis of rotation of the bell cup, i.e. the overflow surface is preferably not divided into several sections that have different angles of inclination.
  • the angle of inclination of the overflow surface relative to the axis of rotation of the bell cup can be in the range of 50°-87° or 55°-85°, with an angle of inclination of the overflow surface of 60° having proven particularly advantageous.
  • the overflow surface of the bell cup preferably encloses a specific angle of inclination relative to the middle or distal section of the outer surface of the bell cup, with this angle of inclination preferably being in the range of 10°-50° or 20°-40°, with a value of 30° has proven to be particularly advantageous.
  • the rotary atomizer according to the invention can have a shaping air ring which has the task of shaping the spray jet sprayed off the bell cup, as is known per se from the prior art.
  • the shaping air ring surrounds the bell cup at its proximal end and is designed to emit at least one shaping air jet from behind onto the lateral surface of the bell cup and/or onto the spray jet of the paint in order to shape the spray jet.
  • the proximal jacket section and/or the hub section of the outer jacket surface of the bell cup can be arranged entirely or partially within the shaping air ring in the axial direction, i.e. the bell cup is at least partially enclosed (encapsulated) with its proximal jacket section.
  • the central jacket section of the jacket surface of the bell cup is preferably located completely outside of the shaping air ring in the axial direction, which preferably also applies to the distal jacket section of the bell cup.
  • the outer lateral surface of the bell cup with the shaping air ring preferably encloses an annular gap, specifically preferably in the area of the middle and/or the proximal lateral section of the bell cup.
  • this annular gap preferably has a gap width that is less than 10 mm, 5 mm, 4 mm, 3 mm or 2 mm.
  • the narrowest point of the annular gap between the outer shaping air ring on the one hand and the outer surface of the bell cup on the other hand is preferably at a specific axial distance from the end face of the shaping air ring, with this axial distance preferably being less than 10 mm, 7 mm or 5 mm.
  • annular gap between the outer surface of the bell cup on the one hand and the shaping air ring on the other hand preferably widens from the narrowest point both in the proximal direction and in the distal direction, which has proven to be advantageous.
  • the shaping air ring has a first shaping air nozzle ring, which is preferably aligned coaxially to the axis of rotation of the bell cup and has a plurality of shaping air nozzles, each of which can output a first shaping air stream.
  • the shaping air nozzles are arranged in the first shaping air nozzle ring, preferably distributed equidistantly over the circumference of the shaping air nozzle ring.
  • the first shaping air nozzles preferably emit the first shaping air flow at a first twist angle in the circumferential direction. This means that the first shaping air flow is not parallel is aligned to the axis of rotation of the bell cup, but is angled in the circumferential direction.
  • the shaping air ring in the rotary atomizer according to the invention can have a second shaping air nozzle ring, which is also preferably aligned coaxially to the axis of rotation of the bell cup and generally includes several shaping air nozzles, which can be arranged equidistantly over the circumference of the second shaping air nozzle ring and each have a second shaping air flow spend.
  • the shaping air nozzles of the second shaping air nozzle ring can either be aligned axially, i.e. parallel to the axis of rotation of the bell cup, or angled in the circumferential direction, i.e. twisted.
  • the first twist angle of the directing air nozzles, which are angled in the circumferential direction, of the first directing air nozzle ring is preferably in the range of 40°-75° or 50°-64°, with a twist angle of 55° having proven to be particularly advantageous. It should be mentioned here that the directing air nozzles, which are angled in the circumferential direction, are preferably aligned counter to the direction of rotation of the bell cup.
  • the first shaping air nozzle ring preferably has a smaller diameter than the bell cup at its spraying edge, with the difference in diameter being able to be in the range of 2mm-8mm or 3mm-6mm, for example.
  • the diameter of the second ring of shaping air nozzles is preferably essentially the same as the outside diameter of the spraying edge of the bell cup, for example with a deviation of at most ⁇ 2mm or with an oversize of +1mm.
  • the individual shaping air nozzles of the first or second shaping air nozzle ring can each have a countersink at their outlet opening, which can be shaped, for example, cylindrically or conically.
  • the maximum lowering diameter of the lowering of the directing air nozzles is preferably larger than the bore diameter of the directing air nozzles, preferably by 20-70% or 30-50%. It should be mentioned here that the countersinking along the bore axis over a countersink length in the axial direction which is essentially equal to the bore diameter, for example with a deviation of at most ⁇ 40%, ⁇ 30% or ⁇ 45%.
  • countersinks In practice, countersinking is done with so-called "countersinks". This is usually used to deburr holes or to countersink the head for wood screws (i.e. countersinks). Usually the countersinks have a 90° angle. The angle could also be 60° or 120° Alternatively, there are flat countersinks. These are then used more to countersink screw heads (hexagon head screws, Allen screws). The decisive factor is that the air flow distribution changes if the hole is not sharp-edged but countersunk. Small changes have to be made major impact. You can measure the countersinks in diameter and/or the countersink depth. The angle is also required, but is then given by the selected tool.
  • the spray-off edge of the bell cup preferably lies in a spray-off edge plane that runs at right angles to the axis of rotation of the bell cup, as is also the case with the known bell cups.
  • the directing air jet intersects the spray edge plane of the bell cup at a point which is spaced from the spray edge of the bell cup, preferably at a distance of 0 mm-4 mm.
  • the directing air jet is therefore preferably not directed at the outer lateral surface of the bell cup, but rather passes the outer lateral surface of the bell cup with its central axis. This preferably applies both to the first shaping air and to the second shaping air.
  • the painting installation according to the invention has a painting zone which can be arranged in a painting booth, for example.
  • the painting installation according to the invention has a painting line in order to convey the components to be painted (e.g. motor vehicle body parts) through the painting zone.
  • the painting system according to the invention is characterized in that different application tasks are carried out in the same painting zone.
  • the following application tasks can be completed in the same painting zone: Application of a first base coat layer (BC1) to the outer surfaces of the components, application of a first base coat layer (BC1) to the inner surfaces of the components, and application of a second base coat layer (BC2) to the first base coat layer on the outer surfaces of the components (BC: Base Coat).
  • BC1 first base coat layer
  • BC1 first base coat layer
  • BC2 second base coat layer
  • the invention also includes a corresponding painting process, the individual process steps of the painting process according to the invention already resulting from the above description, so that a separate description of the individual process steps can be dispensed with.
  • FIG. 1 shows a schematic cross-sectional view of a rotary atomizer according to the invention.
  • Figures 2-4 show enlarged schematic cross-sectional views of the bell cup in different variants of the invention.
  • FIG. 5 shows a modification of the rotary atomizer according to FIG.
  • FIGS. 6 and 7 show schematic perspective views to clarify the countersinking of the directing air nozzles.
  • FIG. 8 shows a schematic side view of a rotary atomizer according to the invention to illustrate the orientation of a directing air jet.
  • FIG. 9 shows a perspective view of a rotary atomizer according to the invention to clarify the alignment of the various shaping air jets.
  • FIG. 10 shows a simplified schematic representation of a painting system according to the invention.
  • FIG. 11 shows a flow chart to illustrate a variant of the painting method according to the invention.
  • FIG. 12 shows a flow chart to illustrate another variant of the painting method according to the invention.
  • FIG. 1 The exemplary embodiment of a rotary atomizer 1 according to the invention shown in FIG. 1 will now be described below, with the structure and mode of operation of the rotary atomizer 1 being known in principle from the prior art.
  • the rotary atomizer 1 has a bell cup 2 which can be rotated about an axis of rotation 3 and is driven during operation by a compressed air turbine of the rotary atomizer 1, the compressed air turbine not being shown for the sake of simplicity.
  • the bell cup 2 has a hub 4, with which the bell cup 1 can be screwed, for example, onto a hollow turbine shaft of the compressed air turbine of the rotary atomizer 1.
  • the bell cup 2 here has an external rinsing space 5 in order to be able to flush the outer lateral surface of the bell cup 2 with a rinsing agent, as is known per se from WO 2011/018169 A1, so that the external rinsing space 5 is shown here only schematically.
  • the paint to be applied is in this case supplied centrally through the hollow hub 4, for example through a paint nozzle which runs coaxially within the hollow turbine shaft of the compressed air turbine.
  • the paint to be applied then first strikes axially a distribution disk 6, which is only shown schematically here, and is thereby deflected radially outwards.
  • the paint then flows from the distributor disc 6 via an overflow surface 7 to an annular spray edge 8, where the paint is sprayed off, as is known per se from the prior art.
  • the aforementioned outer surface of the bell cup 2 is divided into several casing sections, namely a hub section NA in the area of the hub 4, a proximal casing section 9, a middle casing section 10 and a distal casing section 11, which run directly along the axis of rotation 3 of the bell cup 2 follow one another and directly adjoin one another.
  • the hub section NA merges into the proximal casing section 9 with a kink.
  • the proximal jacket section 9 transitions into the middle jacket section 10 with a kink 12 .
  • the central jacket section 10 in turn merges into the distal jacket section 11 with a kink 13 .
  • the hub section NA, the proximal jacket section 9, the middle jacket section 10 and the distal jacket section 12 of the outer jacket surface of the bell cup 2 differ in their angle of inclination, on the one hand in relation to the axis of rotation 3 and on the other hand in relation to the overflow surface 7 of the bell cup 2.
  • Figures 2-4 show different variants of the invention with different angles of inclination of the different sections 9-11 of the outer surface of the bell cup 2.
  • angles of inclination ⁇ of the distal jacket section 11 are also possible, which can be in the range of 0°-5°, for example.
  • the proximal casing section 9 has an angle of inclination to the axis of rotation 3 that is smaller than the angle of inclination a of the central casing section 10.
  • the overflow surface 7, encloses an angle 5 with the axis of rotation 3, which can preferably be in the range of 55°-85°.
  • the distal jacket section 11 of the outer jacket surface of the bell cup 2 extends over a certain axial length W along the axis of rotation 3 of the bell cup 2, this axial length W preferably being in the range of 0-2 mm.
  • the middle jacket section 10 has an axial length B along the axis of rotation 3 of the bell cup 2, which is preferably in the range of 1 mm-5 mm.
  • the axial length B of the central jacket section 10 is therefore preferably significantly greater than the axial length W of the distal jacket section 11 of the outer jacket surface of the bell cup 2.
  • the rotary atomizer 1 has a shaping air ring 14 which has the task of shaping the spray jet sprayed off the bell cup 2, as is known per se from the prior art.
  • the shaping air ring 14 surrounds the bell cup 2 in the form of a ring and encloses an annular gap 15 with the bell cup 2 .
  • the annular gap 15 has a gap width b at its narrowest point is preferably less than 2 mm.
  • the constriction of the annular gap 15 is at a distance from the end face 16 of the directing air ring 15, specifically at a distance H which is preferably less than 5 mm.
  • FIG. 5 shows a modification of FIG. 1, so that, in order to avoid repetition, reference is first made to the description of FIG. 1, the same reference numbers being used for corresponding details.
  • the shaping air ring 14 has two shaping air nozzle rings with different diameters TK1, TK2.
  • the first ring of shaping air nozzles has shaping air nozzles 17 which are twisted in the circumferential direction, i.e. the first shaping air nozzles 17 do not run parallel to the axis of rotation 3 of the bell cup 2, but are angled in the circumferential direction.
  • the second ring of shaping air nozzles on the other hand, has shaping air nozzles 18 which are aligned parallel to the axis of rotation 3 of the bell cup 2 .
  • Figure 6 shows a schematic, simplified representation of the shaping air nozzles 17, which can have a countersink 19 at their outlet opening, which in this exemplary embodiment is cylindrical in shape and has a countersink length I which, in relation to the diameter of the shaping air nozzle 17, is in the range of 30%-50 % can lie.
  • FIG. 7 shows a modification of FIG. 6 with the special feature that the countersink 19 is not cylindrical, but is shaped in an odd way.
  • the countersink 19 was shown here only in relation to the directing air nozzle 17 . However, the directing air nozzles 18 can have such a countersink 19 in the same way.
  • Figure 8 shows a schematic representation to illustrate the alignment of a shaping air jet 20.
  • the spraying edge 8 of the bell cup 2 runs in a spraying edge plane 21, which is intersected by the shaping air jet 20 radially outside of the spraying edge 8 of the bell cup 2, at a distance a, the can be in the range of 0mm-4mm.
  • FIG. 9 shows a perspective view of a rotary atomizer 1 according to the invention, which largely corresponds to the exemplary embodiments described above, so that to avoid repetition, reference is made to the above description, with the same reference symbols being used for corresponding details.
  • the two shaping air nozzle rings emit two different shaping air jets 22, 23, with shaping air jet 22 being aligned axially, i.e. parallel to axis of rotation 3 of bell cup 2, whereas shaping air jet 23 is angled in the circumferential direction and thus has a twist.
  • FIG. 10 shows a greatly simplified schematic representation of a painting system according to the invention with a painting booth 24, with a painting line 25 running through the painting booth 24 in order to convey motor vehicle bodies 26 into the painting booth 24 or to convey them out of the painting booth 24.
  • a painting robot 27 is arranged in the painting booth 24 and is equipped with the rotary atomizer 1 according to the invention and is therefore able to carry out various application tasks in the same painting booth 24 .
  • add-on parts can also be painted in addition to the motor vehicle bodies 25 in the paint booth 24, to name just one example of various application tasks.
  • FIG. 11 shows a flow chart to illustrate the painting method according to the invention according to a variant of the invention.
  • a first step S1 motor vehicle bodies are first conveyed into the paint booth.
  • a first basecoat layer (BC1) is then applied to outer surfaces of the motor vehicle body.
  • a first basecoat layer (BC1) is then applied to interior surfaces of the motor vehicle body in the same paint booth.
  • a second basecoat layer (BC2) is then applied to the outer surfaces of the motor vehicle body.
  • FIG. 12 shows a further flow chart to illustrate another variant of the painting method according to the invention.
  • a first step S1 the motor vehicle body is conveyed back into the paint booth.
  • a filler layer is then applied to the motor vehicle body in the paint booth.
  • a further step S3 then provides that a first base coat layer (BC1) is applied to the motor vehicle body in the same paint booth.
  • a second basecoat layer (BC2) can then be applied to the motor vehicle body in the same paint booth.
  • a clear coat can also be applied to the motor vehicle body, and this can also be done in the same paint booth.
  • the invention is not limited to the preferred embodiments described above. Rather, a large number of variants and modifications are possible, which also make use of the idea of the invention and therefore fall within the scope of protection.
  • the invention also claims protection for the subject matter and the features of the subclaims independently of the claims referred to in each case and in particular also without the features of the main claim.
  • the invention thus comprises various aspects of the invention which can enjoy protection independently of one another.

Landscapes

  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Abstract

L'invention concerne une coupelle en cloche (2) destinée à un pulvérisateur centrifuge (1) permettant de peindre des composants (26), comportant les caractéristiques suivantes : • un moyeu (4) destiné au montage rotatif de la coupelle en cloche (2) sur le pulvérisateur centrifuge (1) de telle sorte que la coupelle en cloche (2) peut être amenée à tourner autour d'un axe de rotation (3), • un bord de pulvérisation annulaire périphérique (8) permettant de pulvériser la peinture sous la forme d'un jet de pulvérisation, et • une surface latérale externe périphérique (9, 10, 11) qui s'élargit vers le bord de pulvérisation (8) dans la direction distale le long de l'axe de rotation (3). Selon l'invention, la surface latérale externe de la coupelle en cloche (2) est subdivisée en différentes parties qui présentent des angles différents. En outre, l'invention comprend un pulvérisateur centrifuge comportant une telle coupelle en cloche, une installation de peinture et un procédé de peinture correspondant.
EP22783522.0A 2021-10-05 2022-10-04 Coupelle en cloche, pulvérisateur centrifuge comportant la coupelle en cloche, installation de peinture et procédé de peinture correspondant Pending EP4377016A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021125820.0A DE102021125820A1 (de) 2021-10-05 2021-10-05 Glockenteller, Rotationszerstäuber mit dem Glockenteller, Lackieranlage und entsprechendes Lackierverfahren
PCT/EP2022/077498 WO2023057407A1 (fr) 2021-10-05 2022-10-04 Coupelle en cloche, pulvérisateur centrifuge comportant la coupelle en cloche, installation de peinture et procédé de peinture correspondant

Publications (1)

Publication Number Publication Date
EP4377016A1 true EP4377016A1 (fr) 2024-06-05

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EP22783522.0A Pending EP4377016A1 (fr) 2021-10-05 2022-10-04 Coupelle en cloche, pulvérisateur centrifuge comportant la coupelle en cloche, installation de peinture et procédé de peinture correspondant

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EP (1) EP4377016A1 (fr)
KR (1) KR20240072174A (fr)
CN (1) CN117836063A (fr)
DE (1) DE102021125820A1 (fr)
WO (1) WO2023057407A1 (fr)

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AU517923B2 (en) 1977-02-07 1981-09-03 Ransburg Japan Ltd. Rotary paint atomizing device
GB8320827D0 (en) 1983-08-02 1983-09-01 Sale Tilney Technology Ltd Coating workpieces
GB2250697B (en) * 1988-09-23 1992-12-23 Graco Inc Rotary atomizer
DE9319555U1 (de) 1992-12-21 1994-04-07 Dürr GmbH, 70435 Stuttgart Rotationszerstäuber mit einem Glockenkörper
JP3208022B2 (ja) * 1994-10-21 2001-09-10 本田技研工業株式会社 メタリック塗料の塗装方法
JPH0994488A (ja) * 1995-07-27 1997-04-08 Mazda Motor Corp ベル型塗装装置
DE102006022570A1 (de) * 2006-05-15 2007-11-29 Dürr Systems GmbH Beschichtungseinrichtung und zugehöriges Betriebsverfahren
DE102006057596A1 (de) 2006-12-06 2008-06-19 Dürr Systems GmbH Lenkluftring mit einer Ringmulde und entsprechender Glockenteller
DE102009037604A1 (de) 2009-08-14 2011-02-24 Dürr Systems GmbH Farbdüse für einen Glockenteller eines Rotationszerstäubers
DE202009011363U1 (de) 2009-08-21 2009-11-05 Abb Ag Zerstäuberglocke
JP6181094B2 (ja) * 2015-02-16 2017-08-16 トヨタ自動車株式会社 回転霧化型静電塗装機及びそのシェーピングエアリング
CN109689218B (zh) * 2017-06-01 2024-04-05 Abb瑞士股份有限公司 旋转雾化头型涂装机

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CN117836063A (zh) 2024-04-05
DE102021125820A1 (de) 2023-04-06
WO2023057407A1 (fr) 2023-04-13
KR20240072174A (ko) 2024-05-23

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