EP1711269B1 - Bol de pulverisation pour un projecteur rotatif avec fixation magnetique - Google Patents

Bol de pulverisation pour un projecteur rotatif avec fixation magnetique Download PDF

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Publication number
EP1711269B1
EP1711269B1 EP05717562A EP05717562A EP1711269B1 EP 1711269 B1 EP1711269 B1 EP 1711269B1 EP 05717562 A EP05717562 A EP 05717562A EP 05717562 A EP05717562 A EP 05717562A EP 1711269 B1 EP1711269 B1 EP 1711269B1
Authority
EP
European Patent Office
Prior art keywords
bowl
coupling means
magnet
sprayer
air gap
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.)
Active
Application number
EP05717562A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1711269A2 (fr
Inventor
Caryl Thome
Patrick Ballu
Eric Prus
Laurent Giraud
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.)
Sames Kremlin SAS
Original Assignee
Sames Technologies SAS
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
Priority claimed from FR0403506A external-priority patent/FR2868342B1/fr
Application filed by Sames Technologies SAS filed Critical Sames Technologies SAS
Publication of EP1711269A2 publication Critical patent/EP1711269A2/fr
Application granted granted Critical
Publication of EP1711269B1 publication Critical patent/EP1711269B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B3/1035—Driving means; Parts thereof, e.g. turbine, shaft, bearings
    • 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
    • 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
    • B05B3/1035—Driving means; Parts thereof, e.g. turbine, shaft, bearings
    • B05B3/1042—Means for connecting, e.g. reversibly, the rotating spray member to its driving 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/11—Magnets

Definitions

  • the present invention relates to a spray bowl for a rotating coating product projector.
  • the invention also relates to a coating product projector comprising such a bowl, and to a coating product projection installation incorporating such a projector.
  • the balancing of the rotating parts must be as perfect as possible in order to limit the effect of the forces of inertia.
  • the Magnets used must therefore be balanced in rotation, which is difficult to achieve because the material constituting the magnet or magnets does not have an isotropic density and because such a material is brittle, so difficult to machine.
  • the invention intends to remedy more particularly by proposing a spray bowl which can be easily driven by a rotor provided for this purpose by virtue of an effective magnetic coupling, without the need to mount permanent magnets on a rotating part of the projector.
  • the invention relates to a spraying bowl for a rotary projector of coating product bd, which is equipped with first magnetic coupling means adapted to cooperate with second complementary magnetic coupling means fixed on a non-rotating part of a projector, these first and second coupling means being adapted to exert a force at least partially axial with respect to the axis of rotation of this bowl, this force inducing the coupling in rotation of the bowl with a corresponding drive member.
  • the force resulting from the magnetic coupling makes it possible to secure the bowl and its drive means, in particular the rotor of a turbine, even though the magnetic coupling takes place between the bowl, which is rotatable, and a non-rotating part of the projector. It is therefore possible to mount the coupling magnet or magnets on this non-rotating part, this or these magnets then not having to be balanced.
  • the invention also relates to a rotary coating product projector which comprises a bowl and a rotational drive member of this bowl, this projector being characterized in that it also comprises magnetic coupling means between the bowl and a part. non-rotating the projector, these means being adapted to exert a force at least partially axial with respect to the axis of rotation of the bowl, this force inducing the rotational coupling of the above-mentioned bowl and body.
  • the rotor 11 makes it possible to drive the bowl 3 at a speed of several tens of thousands of revolutions per minute, for example 80,000 revolutions per minute, so that the coating product coming from the source S through a tube of injection 18 is sprayed towards an object O, as represented by the arrows F 2 .
  • the projector P may be of the electrostatic type, that is to say include electrostatic charging means of the coating product before or after it has been discharged from the edge 31 of the bowl 3.
  • the bowl 3 may be provided with a notch 32.
  • the bowl 3 comprises a bi-partite hub 33 and a body 34 forming a cup and defining a surface 35 of flow and distribution of the coating product in the direction of the edge 31.
  • the hub 33 is hollow and defines a channel longitudinal axis 36 which is centered on an axis X 3 -X ' 3 coincides with the axis XX' when the bowl 3 is mounted on the rotor 11.
  • the axis X 3 -X ' 3 is an axis of symmetry of the body 34 which is, for example, made of titanium.
  • the ring 4 is in one piece and comprises an annular skirt 41 and provided with an internal thread enabling the fixing of the ring 4 by screwing on a external thread 37 of the body 34.
  • the ring 4 can be force-fitted around the bowl 3.
  • the ring 4 can be integral with the body 34.
  • the body 34 forms a male portion 38 intended to penetrate into a central housing 12 of the rotor 11.
  • the outer surface 38a of the portion 38 is generally frustoconical and convergent towards the rear of the bowl 3, that is to say at the opposite the ridge 31.
  • the surface 12a of the housing 12 is also frustoconical and divergent in the direction of the front face 13 of the rotor 11. It is noted ⁇ the half angle at the top of the portion 38 and ⁇ the half angle at the top of the 12.
  • the angles ⁇ and ⁇ are substantially equal, which allows a surface support surfaces 38a and 12a. Such surface support allows adhesion rotation rotation of elements 11 and 3.
  • the bowl may be provided with a generally frustoconical housing similar to the housing 12, while the rotor is equipped with a male part also frustoconical similar to the part 38, these reliefs also allowing a bonding of the elements 11 and 3 by adhesion.
  • a first clearance 38b is formed at the junction of the surface 38a and a connecting surface 34b of the body 34 to the surface S 42 .
  • a second clearance 12b is provided in the bottom of the housing 12 in the form of a radial groove.
  • the clearances 38b and 12b are intended to be arranged, when the bowl 3 is mounted on the rotor 11, respectively facing an inlet chamfer 12c of the housing 12 and the end edge 38c of the portion 38. These clearances prevent dirt from catching the portion 38 in the housing 12.
  • a body 15 of the turbine surrounds the rotor 11 and is, in practice, the stator of the turbine. This body 15 is not rotatable.
  • the magnet 52 is held in place in the groove 51 by two adhesive layers 53 and 54 which extend radially on either side of the magnet 52.
  • the adhesive layers 53 and 54 thus form two substantially annular washers arranged on either side of the magnet 52. Given the nature of the glue, which may be epoxy resin glue, these washers are non-magnetic.
  • washers of non-magnetic metal or low magnetic permeability, in particular of aluminum may be used.
  • volumes filled with air may be suitable, provided that the magnet is fixed in the groove 51 by other means.
  • l 53 and l 54 the radial widths or the respective thicknesses of layers or washers 53 and 54.
  • R 52 means the average radius of the magnet 52.
  • R 42 means the radius of the surface 42.
  • the radii R 42 and R 52 are substantially equal, which corresponds to the fact that when the bowl 3 is mounted on the rotor 11, the surface S 42 is disposed facing the exposed surface S 52 of the magnet 52 and centered thereon. The magnetic field due to the magnet 52 thus closes through the portion 42 of the ring 4, as is apparent from the representation of its field lines L to the figure 2 .
  • This magnetic field makes it possible to exert on the ring 4 a force F 3 parallel to the axis X-X ', that is to say axial, and having a tendency to firmly press the bowl 3 onto the rotor 11, that is, the surface 38a on the surface 12a. Given this force, the contact surfaces 38a and 12a are secured in rotation, which allows a drive of the bowl 3 by the rotor 11.
  • the force F 3 is parallel to the axis XX 'in the plane of the figure 2 , as in any cutting plane containing the X-X 'axis, which results from the fact that the surfaces S 42 and S 52 are perpendicular to the axis XX'.
  • the magnetic field due to the polarization of the magnet 52 closes through the portion 42 of the ring 4 even if it is slightly radially offset relative to the magnet 52, as shown in FIG. Figure 2A .
  • This figure corresponds to the case where the axis X 3 -X ' 3 of the bowl 3 is not aligned with the axis XX' of the rotor 11 during the introduction of the bowl on the rotor.
  • the thicknesses 53 and 154 are greater than the air gap e, preferably at least three times greater than this gap. In practice, a choice of thicknesses l 53 and l 54 substantially equal to five times this gap allows a good distribution of the field lines.
  • the support 5 is immobilized on the front face 16 of the body 15 by means of three screws 6 whose countersunk head 61 bears on the layer 53 and possibly on the magnet 52, which contributes to the immobilization of the coupling means 52 to 54 in the groove 51.
  • the support 5 axially extends the body 15 forward, that is to say towards the objects O.
  • the magnets 52 and 54 are integrated in the support 5 makes it possible to provide such support on the body 15 of a conventional turbine in which a bowl is normally immobilized on the rotor 11 by screwing through a tapping 17 provided in the central bore 11a of the rotor 11 in which the tube 18 is arranged.
  • the fact of mounting the support 5 on a turbine makes it possible to transform a conventional projector, in which a bowl is screwed onto the rotor, into a compliant projector. to the invention.
  • This aspect of the invention makes it possible to envisage an upgrade of the existing equipment.
  • the force F 3 is substantially inversely proportional to the value of the square of the gap e.
  • the gap e is chosen so that the force F 3 is greater than a minimum value F 3min of the order of 5 daN corresponding to a satisfactory retention of the bowl 3 on the rotor 11.
  • the gap e is also chosen so that the effort F 3 is less than one maximum value F 3max of the order of 20 daN, this to prevent the bowl 3 is pressed against the support 5 without the pressurization of the air bearing of the turbine does not allow to take off the bowl and the rotor .
  • the force F 3 is chosen with a value equal to approximately 12 daN. which makes it possible to determine the value of the air gap e from the curve of the figure 5 .
  • This value can vary over a range ⁇ e visible at the figure 5 and depending on the values F 3min and F 3max .
  • This value depends in practice on the inertia of the bowl, therefore its geometry. It may be different depending on the types of bowls used.
  • the bowl 3 of this embodiment is equipped with a ring 4 force-fitted on the body 34 of this bowl.
  • This ring 4 comprises an annular skirt 41 and a frustoconical portion 32 converging towards the rear of the bowl 3 and centered on the axis XX 'of rotation of this bowl.
  • a support 5 attached to a turbine body, of the body type 15 of the first embodiment, is equipped with a magnet 52 bordered by two washers of non-magnetic material 53 and 54.
  • the elements 52 to 54 are arranged in the support 5 such that their exposed surfaces are frustoconical and convergent towards the rear of the turbine, with a half-angle at the vertex ⁇ equal to the half-angle at the apex ⁇ of the surface S 42 of the portion 42 which faces the elements 52 to 54 S 52 is the exposed surface of the element 52.
  • the surfaces S 42 and S 52 are therefore parallel and define between them an air gap e of substantially constant thickness, this air gap being also frustoconical with a half angle at the vertex equal to ⁇ and ⁇ .
  • R 42 and R 52 are respectively denoted by the mean radii of the surfaces S 42 and S 52 , these mean radii being substantially equal.
  • the 42 the radial width of the surface 42. It is also noted 52 the radial width of the surface S 52 and l 53 and l 54 the radial widths of the rings 53 and 54. Note the 52 the sum of the widths l 52 , 53 and 54 . As in the first embodiment, the width 42 is greater than the width 52 , the surface 42 protruding radially outwardly and inwardly relative to the rings 53 and 54 by an overhang d 1 or d 2 which is in practice, of the order of five times the thickness of the air gap e.
  • L magnetic field lines are closed through the portion 42 of the ring 4, which ensures effective maintenance of the bowl in position relative to the end 1 of the turbine.
  • the bowl 3 is provided with a male part 38 intended to be received in a housing formed by the rotor 11 of the turbine, an adhesion joining taking place under the effect of the force F 3 , between the outer frustoconical surface 38a of the part 38 and a frustoconical surface 12a defining the housing formed by the rotor 11.
  • an air flow E can also be formed in the gap e with the particular advantage that the rotation of the bowl induces a "pumping" effect of the air from the inside to the outside the air gap e.

Landscapes

  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
  • Projection Apparatus (AREA)
EP05717562A 2004-02-06 2005-02-04 Bol de pulverisation pour un projecteur rotatif avec fixation magnetique Active EP1711269B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US54190904P 2004-02-06 2004-02-06
FR0403506A FR2868342B1 (fr) 2004-04-02 2004-04-02 Bol de pulverisation, projecteur rotatif incorporant un tel bol et installation de projection incorporant un tel projecteur
PCT/FR2005/000259 WO2005082542A2 (fr) 2004-02-06 2005-02-04 Bol de pulverisation, projecteur rotatif incorporant un tel bol et installation de projection incorporant un tel projecteur

Publications (2)

Publication Number Publication Date
EP1711269A2 EP1711269A2 (fr) 2006-10-18
EP1711269B1 true EP1711269B1 (fr) 2008-03-26

Family

ID=34913612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05717562A Active EP1711269B1 (fr) 2004-02-06 2005-02-04 Bol de pulverisation pour un projecteur rotatif avec fixation magnetique

Country Status (8)

Country Link
US (1) US7452421B2 (ja)
EP (1) EP1711269B1 (ja)
JP (1) JP4658072B2 (ja)
KR (1) KR101238735B1 (ja)
AT (1) ATE390207T1 (ja)
CA (1) CA2550739C (ja)
DE (1) DE602005005635T2 (ja)
WO (1) WO2005082542A2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021105086U1 (de) 2021-09-21 2021-09-28 Albert Planert Rotationszerstäuber

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7416607B2 (en) * 2005-05-25 2008-08-26 Taiwan Semiconductor Manufacturing Co., Ltd. Fluid injection apparatus for semiconductor processing
US7654472B2 (en) * 2005-10-21 2010-02-02 Durr Systems, Inc. Rotary atomizer with a spraying body
US8864049B2 (en) * 2005-10-21 2014-10-21 Durr Systems Gmbh Rotary atomizer with a spraying body
FR2915115B1 (fr) * 2007-04-23 2010-09-10 Sames Technologies Organe de pulverisation,dispositif de projection comportant un tel organe,installation de projection et methode de nettoyage d'un tel organe
ES2612194T3 (es) 2009-05-06 2017-05-12 Dürr Systems Ag Componente de instalación de revestimiento con por lo menos una pieza de sujeción
DE102009020077A1 (de) 2009-05-06 2010-11-11 Dürr Systems GmbH Beschichtungsmittelvorrichtung und Beschichtungsvorrichtung
HUE032262T2 (en) * 2009-07-24 2017-09-28 Duerr Systems Ag Rotary atomiser spray spray and loss insurance
FR3012985B1 (fr) 2013-11-12 2016-12-09 Sames Tech Projecteur electrostatique de produit de revetement et installation de projection comprenant un tel projecteur
FR3048896B1 (fr) * 2016-03-21 2018-04-13 Exel Industries Pulverisateur de produit de revetement, procede de montage et de demontage
DE102017212480B4 (de) 2017-07-20 2022-06-09 Audi Ag Rotationszerstäuber mit verbessertem Befestigungssystem für den Glockenteller
GB2598957B (en) * 2020-09-22 2023-07-05 Novanta Tech Uk Limited Rotary atomisers

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JPS5222271A (en) * 1975-08-14 1977-02-19 Toshiba Corp Automatic hand-exchange apparatus for industrial robot
FR2497439B1 (fr) 1981-01-06 1985-06-07 Tecnoma Installation pour la pulverisation d'un liquide de traitement, notamment de traitement des cultures ou des sols
SE507891C2 (sv) * 1992-04-23 1998-07-27 Fischer Ag E Sprutmålningsmunstycke
FR2698564B1 (fr) 1992-12-01 1995-03-03 Sames Sa Dispositif de projection de produit de revêtement à élément rotatif de pulvérisation et outil pour le montage et le démontage d'un tel élément rotatif.
US5584435A (en) * 1993-04-23 1996-12-17 E. Fischer Ag Bell atomizer with air/magnetic bearings
US5697559A (en) * 1995-03-15 1997-12-16 Nordson Corporation Electrostatic rotary atomizing spray device
JP2000135453A (ja) * 1998-08-28 2000-05-16 Toyota Motor Corp 回転霧化塗装機
FR2805182B1 (fr) * 2000-02-21 2002-09-20 Sames Sa Dispositif de projection de produit de revetement comprenant un element rotatif de pulverisation
JP2001246508A (ja) * 2000-03-03 2001-09-11 Toshiba Mach Co Ltd ２面拘束ツール
AU2003276336A1 (en) 2002-09-13 2004-04-30 Sames Technologies Spray bowl, discharge device comprising one such bowl and discharge installation comprising one such device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021105086U1 (de) 2021-09-21 2021-09-28 Albert Planert Rotationszerstäuber
EP4151316A1 (de) 2021-09-21 2023-03-22 Albert Planert Rotationszerstäuber

Also Published As

Publication number Publication date
US20050172892A1 (en) 2005-08-11
CA2550739A1 (fr) 2005-09-09
ATE390207T1 (de) 2008-04-15
WO2005082542A2 (fr) 2005-09-09
KR20060129000A (ko) 2006-12-14
EP1711269A2 (fr) 2006-10-18
DE602005005635T2 (de) 2009-05-14
CA2550739C (fr) 2012-07-03
JP4658072B2 (ja) 2011-03-23
JP2007520343A (ja) 2007-07-26
US7452421B2 (en) 2008-11-18
WO2005082542A3 (fr) 2006-05-26
KR101238735B1 (ko) 2013-03-05
DE602005005635D1 (de) 2008-05-08

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