EP1789200A1 - Projecteur rotatif de produit de revetement, installation comprenant un tel projecteur et methode de verification du fonctionnement d'un tel projecteur - Google Patents
Projecteur rotatif de produit de revetement, installation comprenant un tel projecteur et methode de verification du fonctionnement d'un tel projecteurInfo
- Publication number
- EP1789200A1 EP1789200A1 EP05798595A EP05798595A EP1789200A1 EP 1789200 A1 EP1789200 A1 EP 1789200A1 EP 05798595 A EP05798595 A EP 05798595A EP 05798595 A EP05798595 A EP 05798595A EP 1789200 A1 EP1789200 A1 EP 1789200A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bowl
- projector
- air
- pressure
- bearing
- 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
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
- 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
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
-
- 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
- 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
- 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
- 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 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 characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
Definitions
- the invention relates to a rotary coating product projector, a coating product installation comprising such a projector and a method for checking the operating state of such a projector.
- a microphone to obtain an indication of the rotational speed of a rotating part.
- a microphone delivers a signal even if the rotating part is not equipped with a bowl or if the bowl is incorrectly mounted.
- the invention particularly intends to remedy by proposing a rotating projector whose operation is reliable compared to those of the state of the art.
- the invention relates to a rotary coating product which comprises a spraying bowl and a drive member for rotating this bowl about a geometric axis, this member being kept at a distance from a non-rotating part. rotation of the headlamp by means of a thrust bearing.
- This headlamp is characterized in that it further comprises means for controlling the presence or good assembly of the bowl on the drive member, which comprise:
- first means making it possible to exert on the bowl a force tending to vary the thickness of the air film of this bearing-air stop and second means for determining the air pressure in this thrust bearing.
- a secure operation of the projector can be obtained independently of any possible fault of attention of the operator.
- the determination of the air pressure in the abutment bearing makes it possible indirectly to detect the intensity of the force exerted by the first means.
- the effort in question is almost zero, which can be detected by the second means.
- the intensity of the aforementioned effort may have a non-conforming value, which can also be detected by the second means.
- a rotating projector may incorporate one or more of the following technical features taken in any technically permissible combination:
- the first means are magnetic coupling means between the bowl and a non-rotating part of the projector, the force exerted by these first means being a magnetic force, at least partially parallel to the geometric axis of rotation of the bowl.
- This effort is advantageously capable of inducing the coupling in rotation of the bowl and the body, in particular by adhesion.
- the value of the width of an air gap defined by the magnetic coupling means is advantageously greater than that of the thickness of the air film of the thrust bearing.
- the second means comprise at least one pressure tap formed at the bearing, and a pressure measuring device connected to this pressure tap.
- at least one of the surfaces between which the thrust bearing is defined may be provided with a recessed relief around or facing the outlet of the pressure tap in the thrust bearing.
- the invention also relates to a coating product projection installation which comprises at least one projector as mentioned above. The safety of such an installation is improved compared to the state of the art and its operation is more reliable.
- the invention also relates to a method for verifying the operating state of a rotating projector as described above and, more specifically, to a method which comprises the steps of: - determining the air pressure in a bearing - Stop between a rotating drive member and a non-rotating part of the projector when the bearing is normally fed and - compare the determined value of this pressure with at least one reference value.
- the absence of the bowl or a positioning defect of it can be detected because of the result of the comparison step.
- the above steps can be implemented at each startup of the projector, periodically or continuously during operation of the projector or when the bowl is stopped, the thrust bearing being supplied with pressurized air.
- FIG. 1 is a longitudinal sectional view of a coating product projector according to the invention used in an installation according to the invention
- FIG. 2 is an enlarged view of detail II in FIG. 1, with a schematic representation of a comparator associated with the projector and
- Figure 3 is a section similar to Figure 1, the bowl being axially offset from the body of the projector.
- the projector P shown in Figures 1 to 3 is intended to be supplied with coating material from one or more Si sources and moved, for example, with a substantially vertical movement represented by the double arrow Fi, facing objects 0 to be coated in an installation I coating these objects.
- the projector P comprises an air turbine 1 which is surrounded by a cover 2 of protection and supports a bowl 3 intended to be rotated about a geometric axis X-X 'by the rotor 11 of the turbine.
- the rotor is used to drive the bowl 3 at a speed of several tens of thousands of revolutions per minute, so that the coating product from the source Si through an injection tube 18 is sprayed towards a object O, as represented by the arrows F 2 .
- the projector P may be of the electrostatic type, that is to say, be associated with electrostatic charging means of the coating product before or after it is expelled from the ridge 31 of the bowl 3.
- the bowl 3 may be provided with a notch 32.
- the bowl 3 is symmetrical about an axis X 3 -X ' 3 coincides with the axis XX' when the bowl 3 is mounted on the rotor 11.
- the bowl 3 comprises a hollow hub 33 and a body 34 defining a surface 35 of flow and distribution of the product from the hub 33 and towards the edge 31.
- This ring comprises a portion 42 which defines an annular surface S 42 and generally perpendicular to the axis X 3 -X ' 3 .
- the body 34 forms a male portion 38 intended to penetrate into a central end 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 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.
- 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.
- a body 15 of the turbine 1 surrounds the rotor 11 and is in practice the stator of this turbine. This body is not rotatable, although it can be moved relative to the objects O, as represented by the double arrow Fx.
- a support 5 made of magnetic material, for example magnetic stainless steel, is mounted on the front face 16 of the body 15, this support being provided with an annular groove centered on the axis XX 'and in which is disposed a magnet 52 also annular. The magnet 52 is held in place in the groove by two adhesive layers 53 and 54 which extend radially on either side of this magnet.
- the magnet (s) may be made of ferro-magnetic metal or synthetic resin filled with ferro-magnetic metal particles injected, such that these particles are oriented in the same overall direction.
- washers of non-magnetic metal or low magnetic permeability can be used.
- volumes filled with air can be envisaged.
- R 52 means the average radius of the element 52.
- R 42 means the radius of the surface S4 2.
- 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 surface S 52 and centered thereon.
- the magnetic field due to the magnet 52 thus closes through the portion 42 of the ring 4.
- This magnetic field makes it possible to exert on the ring 4 a magnetic coupling force F3 substantially parallel to the axis X-X ', that is, axial, and tending to firmly press the bowl 3 onto the rotor 11, i.e. the surface 38a on the surface 12a. Given this effort, the contacting surfaces 38a and 12a are joined in rotation by adhesion, which allows a drive of the bowl 3 by the rotor 11.
- the force F 3 is transmitted by the portion 38 of the bowl 3 to the rotor 11, which tends to move the rotor 11 rearwardly relative to the body 15.
- the rotor 11 is held in position relative to the body 15 by two air abutment bearings Pi and P 2 respectively formed on either side of a portion 11a of the rotor 11 substantially in the form of radial flange.
- Other geometries of rotor 11 and other space organizations the or air bearings used to maintain the rotor away from the body 15 are of course conceivable.
- the air thrust bearing Pi is fed, from an annular distribution chamber 6, by several ducts 61 distributed regularly around the axis X-X ', which makes it possible to ensure an air pressure sufficient in the bearing Pi, thus limiting the risk of accidental contact between the facing surfaces 11b of the portion 11a and 15b of the body 15, between which is defined the thrust bearing Pi.
- ei the thickness of the air film Pi thrust bearing.
- the E the width of the gap E.
- the width of the gap E I E allows relative axial movement between the stator and rotor parts of the turbine 1.
- the value of E is greater ⁇ to that of ei.
- the air gap E does not interfere with the thickness variations of the air film of the thrust bearing Pi.
- ⁇ E can be equal to several times, in particular 8 to 10 times, the value of ei .
- the thickness of ei has been exaggerated with respect to the width t E.
- the rotor 11 is equipped with means not shown for controlling its rotation about the axis X-X ', including fins or the like.
- Pi and the thickness ei has a value substantially equal to a nominal value.
- the value of the pressure P r is substantially equal to a known and nominal value P ro .
- a pressure tap 7 is made in the body 15 and opens into the surface 15b, at the level of the bearing Pi.
- This pressure tap is formed of a stitch 71 of small diameter so as not to disturb the operation of the bearing Pi, for example between 0.5 and 1 mm, which opens into the surface 15b and a socket 72 on which a connection pipe 81 may be connected to a pressure measuring device 8 of any suitable type, for example a strain gauge.
- the apparatus 8 is thus capable of determining the value of the pressure P r .
- This apparatus 8 is connected to a comparator 9 in which the value of the pressure P r can be compared with one or more predetermined threshold values dependent on P ro .
- the comparator 9 generates, as a function of the result of the comparison of the pressure values, an electrical signal ⁇ which can be addressed to a processing unit which optionally incorporates an alarm device, of the siren type, or a stop device of the installation I which can be activated in, function of the signal ⁇ .
- the tapping 71 could lead to the surface 15b between two ducts 61, this' which improves the reliability of the P 2 measurement because it is in the vicinity of the outlets of ducts 61 that this pressure is the most important and, therefore, the most likely of variations.
- the value of the pressure P r detected is substantially equal to P EO , which is verified at the comparator 9. If the headlight P is put into operation and if the thrust bearing Pi is fed, while the bowl 3 is not in place on the rotor 11, the force F 3 is not applied at the interface between the elements 3 and 11, so that it does not oppose the force due to the pressure in the bearing Pi. The thickness e x can then increase, while the supply pressure of the bearing from from source S 2 remains constant. Thus, the value of the pressure P r is lower than that observed during normal operation, which can be detected through the pressure tap 7 and the apparatuses 8 and 9, by the value of the signal
- the value of the pressure P r detected is compared, in the comparator 9, with a minimum threshold value and a maximum allowable threshold value.
- An annular groove lie is formed on the surface 116 substantially facing the outlet of the sewing 71.
- the outlet of the stitching 71 may be provided in the bottom of a recess on the surface 15b, which also avoids direct contact between the surfaces 11b and 15b at the stitch 71.
- the aforementioned groove and recess can be used together.
- a comparison step in the comparator 9 at each start of the projector P.
- such a comparison can take place periodically, for example every 15 seconds, or continuously during the operation of the projector, that is to say "in dynamics”.
- the comparison can also take place "in static", that is to say while the thrust bearing Pi is energized but without the rotor 11 rotates since the force F 3 must be present independently of the rotation of the rotor .
- the three approaches mentioned above can be used cumulatively.
- the pressure can be detected in the bearing P 2 since this pressure also varies according to the mounting conditions of the bowl 3 on the rotor 11.
- the threshold values used in the comparator 9 result from a calibration of the pressure measured under normal operating conditions of the projector P.
- the invention has been represented with a force F 3 which induces the rotational coupling of the bowl and of the rotor by adhesion.
- F 3 which induces the rotational coupling of the bowl and of the rotor by adhesion.
- the effort is not necessarily magnetic because it can result from aeration forces exerted on the bowl due to its rotation.
- the rotation of the bowl can create, by aspiration, a localized depression in its immediate neighborhood, which is sometimes referred to as "fan effect".
- the force induced on the bowl may tend to separate the bowl of the rotor (effort directed to the right in Figure 1) or to press it on it (force directed to the left on Figure 1).
- the force that affects the thickness of the thrust bearing air film is not necessarily directed towards the rear of the turbine.
- a magnetic force can be directed in a direction opposite to that of the force F 3 shown in the figures.
- the magnetic coupling means may comprise magnets mounted on both the support 5 and the bowl 3, in place of the ring 4, with polarities such as they repel each other. In this case, the induced magnetic stress tends to widen the air film of the thrust bearing Pi and to shrink the air film of the bearing P 2 .
- the comparator 9 is optional insofar as, especially in the case of a manual installation, the operator can read the measured value of P r directly on a display of the apparatus 8 and, knowing the nominal value P ro , react accordingly.
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Nozzles (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Projection Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Spray Control Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0409090A FR2874518B1 (fr) | 2004-08-25 | 2004-08-25 | Projecteur rotatif de produit de revetement, installation comprenant un tel projecteur et methode de verification du fonctionnement d'un tel projecteur |
| PCT/FR2005/002132 WO2006024798A1 (fr) | 2004-08-25 | 2005-08-24 | Projecteur rotatif de produit de revetement, installation comprenant un tel projecteur et methode de verification du fonctionnement d'un tel projecteur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1789200A1 true EP1789200A1 (fr) | 2007-05-30 |
| EP1789200B1 EP1789200B1 (fr) | 2008-10-08 |
Family
ID=34948780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05798595A Expired - Lifetime EP1789200B1 (fr) | 2004-08-25 | 2005-08-24 | Projecteur rotatif de produit de revetement, installation comprenant un tel projecteur et methode de verification du fonctionnement d'un tel projecteur |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7770826B2 (fr) |
| EP (1) | EP1789200B1 (fr) |
| JP (1) | JP5052343B2 (fr) |
| AT (1) | ATE410236T1 (fr) |
| DE (1) | DE602005010279D1 (fr) |
| FR (1) | FR2874518B1 (fr) |
| WO (1) | WO2006024798A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035887A1 (fr) | 2009-09-24 | 2011-03-31 | Dürr Systems GmbH | Pulvérisateur rotatif et procédé de contrôle de son corps de pulvérisation |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2874518B1 (fr) * | 2004-08-25 | 2006-12-22 | Sames Technologies Soc Par Act | Projecteur rotatif de produit de revetement, installation comprenant un tel projecteur et methode de verification du fonctionnement d'un tel projecteur |
| WO2009023511A1 (fr) * | 2007-08-10 | 2009-02-19 | Fanuc Robotics America, Inc. | Outil magnétique pour robots |
| FR2941877B1 (fr) * | 2009-02-09 | 2011-04-08 | Sames Technologies | Projecteur electrostatique comportant un dispositif de detection de vitesse de rotation |
| JP5872694B2 (ja) | 2011-07-14 | 2016-03-01 | デデルト コーポレイション | 電磁軸受および永久磁石回転子を有する回転式噴霧器 |
| FR3048896B1 (fr) | 2016-03-21 | 2018-04-13 | Exel Industries | Pulverisateur de produit de revetement, procede de montage et de demontage |
| FR3060420B1 (fr) * | 2016-12-15 | 2024-01-05 | Exel Ind | Tete d'application d'un produit de revetement sur une surface a revetir et systeme d'application comprenant cette tete d'application |
| CN108243665B (zh) * | 2018-01-31 | 2021-02-26 | 宁夏金博乐食品科技有限公司 | 一种农用种子风选加药系统及其方法 |
| DE102024117830A1 (de) * | 2024-06-25 | 2026-01-08 | Dürr Systems Ag | Betriebsverfahren und Applikationsvorrichtung zur Überprüfung, ob eine Anbaukomponente korrekt, inkorrekt oder nicht montiert ist |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2349072B1 (de) * | 1973-09-29 | 1975-03-20 | Skf Kugellagerfabriken Gmbh | Aerostatisches Lager |
| JPS6012578B2 (ja) * | 1980-04-04 | 1985-04-02 | トヨタ自動車株式会社 | 回転霧化静電塗装装置の回転数検出装置 |
| JPS5938822B2 (ja) * | 1980-05-14 | 1984-09-19 | 門脇 俊行 | 静電塗装装置 |
| JPS56163776A (en) * | 1980-05-21 | 1981-12-16 | Toyota Motor Corp | Rotary atomization electrostatic painting device |
| JPS57144053A (en) * | 1981-03-04 | 1982-09-06 | Toyota Motor Corp | Rotary atomizing electrostatic coating device |
| JPS5884071A (ja) * | 1981-11-13 | 1983-05-20 | Toyota Central Res & Dev Lab Inc | 回転霧化静電塗装装置における回転数の検出装置と制御装置 |
| FR2584314B1 (fr) * | 1985-07-05 | 1988-04-29 | Sames Sa | Tete atomisante rotative, notamment pour peinture electrostatique |
| JPH0328931Y2 (fr) * | 1985-09-20 | 1991-06-20 | ||
| US4650123A (en) * | 1986-03-25 | 1987-03-17 | Toyota Jidosha Kabushiki Kaisha | Rotary type electrostatic spray painting device |
| 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 |
| JPH08303464A (ja) * | 1995-05-09 | 1996-11-19 | Canon Inc | 割り出し装置 |
| JP3789650B2 (ja) * | 1998-07-13 | 2006-06-28 | Ntn株式会社 | 加工機械およびそのスピンドル装置 |
| JP2000110836A (ja) * | 1998-10-06 | 2000-04-18 | Ntn Corp | 静圧軸受装置 |
| FR2805182B1 (fr) | 2000-02-21 | 2002-09-20 | Sames Sa | Dispositif de projection de produit de revetement comprenant un element rotatif de pulverisation |
| US6581857B2 (en) * | 2000-09-29 | 2003-06-24 | Ntn Corporation | Externally pressurized gas bearing spindle |
| FR2874518B1 (fr) * | 2004-08-25 | 2006-12-22 | Sames Technologies Soc Par Act | Projecteur rotatif de produit de revetement, installation comprenant un tel projecteur et methode de verification du fonctionnement d'un tel projecteur |
-
2004
- 2004-08-25 FR FR0409090A patent/FR2874518B1/fr not_active Expired - Fee Related
-
2005
- 2005-08-24 WO PCT/FR2005/002132 patent/WO2006024798A1/fr not_active Ceased
- 2005-08-24 EP EP05798595A patent/EP1789200B1/fr not_active Expired - Lifetime
- 2005-08-24 JP JP2007528923A patent/JP5052343B2/ja not_active Expired - Lifetime
- 2005-08-24 US US11/573,864 patent/US7770826B2/en not_active Expired - Lifetime
- 2005-08-24 AT AT05798595T patent/ATE410236T1/de not_active IP Right Cessation
- 2005-08-24 DE DE602005010279T patent/DE602005010279D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006024798A1 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035887A1 (fr) | 2009-09-24 | 2011-03-31 | Dürr Systems GmbH | Pulvérisateur rotatif et procédé de contrôle de son corps de pulvérisation |
| DE102009042956A1 (de) | 2009-09-24 | 2011-04-07 | Dürr Systems GmbH | Rotationszerstäuber und Verfahren zur Kontrolle seines Absprühkörpers |
| US9180469B2 (en) | 2009-09-24 | 2015-11-10 | Durr Systems Gmbh | Rotary atomizer and method for the control of the spraying body of said rotary atomizer |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE410236T1 (de) | 2008-10-15 |
| EP1789200B1 (fr) | 2008-10-08 |
| JP2008510608A (ja) | 2008-04-10 |
| JP5052343B2 (ja) | 2012-10-17 |
| DE602005010279D1 (de) | 2008-11-20 |
| US7770826B2 (en) | 2010-08-10 |
| US20080164342A1 (en) | 2008-07-10 |
| FR2874518A1 (fr) | 2006-03-03 |
| WO2006024798A1 (fr) | 2006-03-09 |
| FR2874518B1 (fr) | 2006-12-22 |
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