WO2004085080A1 - 塗装方法及び塗装機 - Google Patents
塗装方法及び塗装機 Download PDFInfo
- Publication number
- WO2004085080A1 WO2004085080A1 PCT/JP2004/004122 JP2004004122W WO2004085080A1 WO 2004085080 A1 WO2004085080 A1 WO 2004085080A1 JP 2004004122 W JP2004004122 W JP 2004004122W WO 2004085080 A1 WO2004085080 A1 WO 2004085080A1
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- WO
- WIPO (PCT)
- Prior art keywords
- paint
- coating machine
- rotary head
- ultrasonic vibration
- spray nozzle
- Prior art date
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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
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
- B05B17/063—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn having an internal channel for supplying the liquid or other fluent material
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- 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
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
-
- 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
- B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
- B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
Definitions
- the present invention relates to a coating method and a coating machine (atomizer), and more particularly to a coating technique using ultrasonic vibration.
- the sprayer is (1) a rotary sprayer that atomizes paint using a high-speed rotating bell-shaped rotary head, and (2) a sprayer that atomizes by discharging paint with air from the nozzles, (3) There is known a hydraulic coater that atomizes by discharging pressurized paint from a fine discharge port.
- the rotary coating machine is, for example, as disclosed in Japanese Patent Application Laid-Open Publication No. Hei 03-01858 (Japanese Patent No. 260930), the rotating shaft of the main body of the device. And the paint supplied from the paint supply pipe to the bell-shaped power tip is formed into a thin film state radially outward along the inner surface of the bell-shaped cup by centrifugal force. Then, it is atomized while scattering outward from the outer peripheral edge of the bell-shaped forceps, and the atomized paint is directed to the front side of the object by the shaving air.
- An object of the present invention is to provide a coating machine which can make the particle size of the finely divided paint uniform.
- Another object of the present invention is to provide a coating machine which can spray paint without air. It is to offer.
- a further object of the present invention is to provide a coating machine which can be painted in the state of being close to a substrate.
- a further object of the present invention is to provide a rotary coater which can atomize paint even at relatively low rotational speeds.
- a further object of the present invention is to provide a coating machine capable of reducing the amount of air discharge in a spray type coating machine which sprays paint together with air from a nozzle.
- a further object of the present invention is to provide a coater capable of atomizing paint without air by diverting a spray type nozzle.
- a further object of the present invention is to provide a hydraulic atomization type coating machine capable of atomizing paint even with a relatively low hydraulic pressure.
- a further object of the present invention is to provide a coating machine capable of easily adjusting the size and / or shape of a coating pattern.
- the present invention is characterized in that ultrasonic vibration is applied to the paint to immediately atomize the paint immediately after the paint is released from the paint releasing means to the outside in a state of easy atomization.
- a paint discharge means typically, a rotary head that discharges paint radially outward, a spray nozzle conventionally used for a spray type sprayer, and a conventional hydraulic atomization type sprayer are used. It is possible to cite a paint outlet for liquid pressure atomization which is carried out.
- the present invention When the present invention is applied to a coating machine equipped with a rotary head, ultrasonic vibration is output forward in the peripheral region adjacent to the outer periphery of the rotary head, so that this vibrational energy can be used. , It is good to make the atomized paint fly forward.
- the spray nozzle and the fog nozzle and Z from the periphery of the paint discharge port for hydraulic atomization are Alternatively, the ultrasonic vibration is output toward the area near the paint discharge port for liquid pressure atomization, and vibration energy is concentrated on the paint immediately after being released from the spray nozzle and the paint discharge port for liquid pressure atomization. It is preferable to
- FIG. 1 is a view showing an example in which the present invention is applied to a rotary type sprayer (atomizer).
- FIG. 2 is a view showing an example in which the present invention is applied to a spray type or a hydraulic type sprayer (atomizer).
- Fig. 3 is a diagram for explaining the phenomenon of atomizing the paint without air by diverting the nozzle of a conventional spray type sprayer (atomizer), and Fig. 3A shows ultrasonic vibration.
- FIG. 3B is a view for explaining a setting position of the point P, and FIG. 3B is a view showing a phenomenon when the ultrasonic vibration energy is concentrated on the point P.
- FIG. 4 is a view for explaining the structure of the main part of the rotary electrostatic sprayer of the first embodiment.
- FIG. 5 is a view for explaining the structure of the ultrasonic horn included in the first embodiment.
- FIG. 6 is a view for explaining the relationship between a vibrating surface and a coating pattern which are disposed around the rotary head (bell-shaped cup) of the rotary electrostatic sprayer of the first embodiment.
- FIG. 7 is a view for explaining the structure of the rotary electrostatic sprayer of the second embodiment.
- FIG. 8 is a view for explaining the structure of the vibration means included in the second embodiment.
- FIG. 9 is a view for explaining the overall configuration of a coating system including the electrostatic coating machine of the embodiment incorporated into the coating line of a car body.
- FIG. 10 is a view for explaining another example of the coating system including the electrostatic coating machine of the embodiment, which is suitably applicable to the coating line of the automobile body.
- FIG. 11 is a view for explaining a varnish in which a plurality of electrostatic sprayers are arranged in two rows, which is adopted in the painting system shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the present invention can be applied to rotary, spray, and hydraulic type coating machines, and is suitably applied to electrostatic coating machines that charge paint and apply the paint to a substrate to which an earth potential is applied.
- the present invention can also be applied to a coating machine in which the paint adheres to the substrate without charging the paint.
- Ming's coating machine does not depend on the type of paint, and can be equally applied to water-based paints, oil-based paints and metallic paints.
- FIG. 1 is a view for explaining an example in which the present invention is applied to a rotary coater (atomizer).
- FIG. 2 is a view for explaining an example in which the present invention is applied to a spray type or hydraulic type sprayer (atomizer).
- the rotary coating machine 1 has an air motor 2 as in the prior art, and the air motor 2 is rotated by supplying compressed air to the air motor 2 through the internal air passage 3 to rotate it. Head 4 is driven to rotate.
- the rotary head 4 is typically a bell cup, but may be a disc. Also, an electric motor may be employed instead of the air motor 2.
- the rotation speed of the bell cup in the conventional rotary coating machine is usually 50,000 rpn! In the rotary type coating machine 1 of the present invention, the rotational speed of the rotary head 4 may be reduced, for example, 4,000 to 5,000 rpm.
- the coating machine 1 further has an internal paint passage or paint supply pipe 5 through which the paint is supplied to the central portion of the rotary head 4.
- the paint supplied to the central portion of the rotary head 4 spreads radially outward along the surface of the rotary head 4 by centrifugal force, and radially outward from the outer peripheral edge 4 a of the rotary head 4. Released into At the outer periphery 4 a of the rotary head 4, the paint is in a state of being easily atomized, and the paint released from the rotary head 4 depends on the rotational speed of the rotary head 4, but the rotary head 4
- the outer peripheral edge 4a of the bead 4 is micronized through a thread-like, thin film form.
- the rotary coater 1 further comprises a cylindrical ultrasonic horn 6, the vibrating surface 6 a of the ultrasonic horn 6 being arranged adjacent to the outer periphery of the rotary head 4.
- the vibration surface 6 a of the ultrasonic horn 6 is preferably disposed at a position where ultrasonic vibration can be applied to a string-like paint, a thin film-like paint, or a paint before and after being micronized.
- the vibration surface 6 a of the ultrasonic horn 6 is vibrated by the ultrasonic vibration generated by the ultrasonic generator 7.
- Reference numeral 8 in FIG. 1 denotes the outer case of the ultrasonic generator 7.
- the vibrating surface 6 a of the ultrasonic horn 6 is formed of an annular inclined surface which gradually expands in diameter from the rear end adjacent to the outer peripheral edge 4 a of the rotary head 4 toward the front, Immediately after that, the paint separated from the outer peripheral edge 4a of the head 4 is subjected to ultrasonic vibration from the vibration surface 6a, whereby the paint is uniformly atomized, and The flight direction is directed forward, ie to the substrate (not shown).
- the relative anteroposterior position of the rotary head 4 and the annular vibrating surface 6 a surrounding it may preferably be adjustable.
- the paint that has jumped out of the outer peripheral edge 4a of the rotary head 4 is subjected to ultrasonic vibration from the vibration surface 6a without being in contact with the vibration surface 6a. You may set the front and back position of the head 4 and the vibrating surface 6 a.
- the paint that has jumped out from the outer peripheral edge 4a of the rotary head 4 forms a thin film on the vibrating surface 6a, and this thin film can be atomized by ultrasonic vibration and be able to fly forward.
- the front and back positions of the rotation head 4 and the vibrating surface 6 a may be set.
- the front and back positions of the rotary head 4 and the vibrating surface 6 a may be set so that the phenomena described in the first and second examples described above are mixed. .
- the phenomena of the first to third examples described above are also influenced by the setting of the inclination angle ⁇ of the vibration surface 6 a of the ultrasonic horn 6.
- the inclination angle ⁇ of the vibrating surface 6 a can be adjusted arbitrarily.
- the vibration surface 6 a of the ultrasonic horn 6 may be formed of an annular surface continuous in the circumferential direction, but may be formed of a plurality of segments arranged in the circumferential direction if necessary. .
- the plurality of segments of the vibrating surface 6 a may be adjusted individually for the inclination angle 0, and / or the relative longitudinal position of the plurality of divided segments 1 with respect to the rotation head 4 is individually adjusted. It may be possible. Thereby, the size and / or shape of the coating pattern of the paint can be easily adjusted.
- the coating machine 10 shown in FIG. 2 is a spray type coating machine.
- the spray coater 10 has an air assist spray nozzle 11 extending to a substrate (not shown) as in the prior art.
- the paint is in an atomizable state, and the paint is discharged together with air from the spray nozzle 11, and is directed to the substrate in an atomized state.
- the vibrating surface 6 a of the ultrasonic horn 6 is located behind the spray nozzle 1 1, and the direction of the vibrating surface 6 a is directed to the point P on the front side of the axis adjacent to the front end of the spray nozzle 1 1. ing. This makes the spray
- the ultrasonic vibrational energy of the vibrating surface 6 a surrounding the nozzle 11 is concentrated on the point P.
- the paint coming out of the spray nozzle 1 is atomized in response to the ultrasonic vibration outputted from the vibrating surface 6 a surrounding the nozzle 1 1 diagonally forward, and the particle diameter of the paint becomes uniform. Become.
- Spray nozzle 1 1 used in the spray type sprayer known in the prior art is diverted, paint is discharged from this spray nozzle 1 1 without atomization air, and immediately after coming out from nozzle 1 1 without air assist It may be possible to atomize by applying ultrasonic vibration to the paint.
- Fig. 3 schematically illustrates this phenomenon.
- Fig. 3A is a diagram for explaining the setting position of the point P
- Fig. 3B is a front view of the ultrasonic vibration energy from the annular vibration surface 6a surrounding the nozzle 1 1 and the nozzle 1 1 This shows the phenomenon when focusing on the boyt P adjacent to.
- Fig. 2 shows a spray-type coating machine 10.
- the hydraulic coater atomizes the pressurized paint by passing it through the minute hydraulic atomizing discharge port, but in the case of the hydraulic coater according to the present invention, The ultrasonic vibration is directed to a point P in front of and adjacent to the axis of the discharge port for hydraulic atomization.
- the hydraulic pressure is set to a lower value than conventional (for example, a few tenths of a degree).
- the paint discharged from the liquid pressure atomization discharge port is subjected to ultrasonic vibration immediately after leaving the liquid pressure atomization discharge port to atomize, and the particle size of the paint becomes uniform.
- the mechanism of atomization of paint in the hydraulic coating machine to which the present invention is applied is substantially the same as B in FIG.
- the paint is ejected from the spray nozzle 11 with or without atomizing air and then micronized.
- the paint is discharged from the discharge port for hydraulic atomization in the form of a thin film, that is, in an easily atomizable state and then pulverized.
- Ru The point P described above is preferably set in a range from the front end of the spray nozzle 11 or the hydraulic atomizing discharge port to the area where the paint starts to atomize.
- the same elements as those of the above-described rotary coater 1 are given the same reference numerals.
- the rotary paint shown in Figure 1 is also used for the spray paint 10 and hydraulic paint machines.
- the variants described for the clothing device 1 can be applied analogously.
- the vibrating surface 6 a of the ultrasonic horn 6 may be continuous in the circumferential direction, but a plurality of segments divided in the circumferential direction It may be configured.
- the plurality of segments obtained by dividing the vibration surface 6 a may be adjusted individually for the inclination angle e, and / or the relative longitudinal position of the plurality of divided segments relative to the rotation head 4 Let's make it possible to adjust it individually.
- FIG. 1 the same elements as those of the above-described rotary coater 1 are given the same reference numerals.
- the rotary paint shown in Figure 1 is also used for the spray paint 10 and hydraulic paint machines.
- the variants described for the clothing device 1 can be applied analogously.
- Reference numeral 1 0 1 is a sprayer main body.
- the coating machine main body 101 has a rotating shaft 102 which is rotated by a motor (not shown) driven by electric or air, and this rotating shaft 102 is defined by the axis of the coating machine main body 101. It is arranged.
- a bell-shaped force pin 103 is fixed to the end of the rotary shaft 102.
- the bell-shaped force chip 103 is disposed with its opening side facing forward (left in the figure), that is, toward the object to be coated (not shown).
- the rotary electrostatic sprayer 100 is attached to a robot arm, and the robot arm moves by moving the robot arm, and the bell-like force prop 103 moves in the front-rear direction (the direction shown by the arrow X in FIG. 4)
- the direction can be changed to adjust the distance and direction between the object (surface to be painted).
- the bell cup 103 is supplied with paint from the paint supply pipe 104 at the time of rotation, and the paint is supplied to the inner surface of the cup through a plurality of holes provided in the central portion of the bell cup 103. It is discharged to 3 a. This paint spreads radially outward along the inner surface 103 a of the bell-shaped force chip 103 by centrifugal force, and is discharged outward from the outer peripheral edge of the bell-shaped force chip 103.
- the ultrasonic vibration device 105 applies the ultrasonic vibration to the paint immediately after scattering from the outer peripheral edge of the bell cup 103 rotating at a relatively low speed (for example, 4,000 to 5,000 rpm).
- a relatively low speed for example, 4,000 to 5,000 rpm.
- the particle size of the paint can be equalized, and kinetic energy that directs the paint forward can be given to the paint.
- the ultrasonic vibration device 105 is composed of an ultrasonic horn, and has a ring-like vibrating surface 106 facing forward as shown in FIGS. 4 and 5.
- the vibrating surface 106 is composed of a group of a plurality of segments 106 a divided in the circumferential direction.
- the ultrasonic horn 1 0 5 has an ultrasonic generator 1 0 7 and this ultrasonic generator 1 0 7 It is connected to a bottomed cylindrical vibration transmitting member 108.
- the ultrasonic wave generator 1 0 7 vibrates at the center of the bottom surface 1 0 8 a of the vibration transfer member 1 0 8, and this vibration is vibrated through the body of the vibration transfer member 1 0 8 Given to surface 106
- the ultrasonic generator 1 0 7 can be disposed at a position away from the vibrating surface 1 0 6.
- the vibrating surface 106 surrounds the bell-shaped force chip 103 adjacent to the outer peripheral edge of the bell-shaped force chip 103.
- the vibrating surface 106 moves back and forth together with the bell force p 103 and / or changes its orientation without changing the relative position with the bell force p 103.
- the vibrating surface 106 can apply ultrasonic vibration to the paint immediately after being scattered outward from the outer peripheral edge of the bell-shaped force chip 103.
- the amplitude and frequency of the vibrating surface 106 it is possible to adjust the degree of kinetic energy to be applied to the paint and the degree of fineness of the paint, whereby the paint adheres to the object to be coated.
- the coating efficiency and the coating film quality can be improved.
- the vibrating surface 106 is preferably adjustable in the inclination angle e described with reference to FIG. As mentioned above, the vibrating surface 106 can move or turn along with the bell force 103. In other words, the vibrating surface 1 0 6 moves in the back and forth direction (arrow X direction) together with the bell power tip 1 0 3 so that the relative longitudinal position with the bell power tip 1 0 3 does not change. And / or change orientation.
- the vibrating surface 106 be adjustable in its relative angle with respect to its inclination angle ⁇ and the bell cup 103. From this, as shown in FIG. 4, the size and shape of the application pattern 1 0 9 can be adjusted. That is, adjust the diameter D of the coating pattern 1 0 9 and the outer contour of the coating pattern 1 0 0 relative to the tilt angle ⁇ of the vibrating surface 1 6 and / or the bell-like force 1 0 3 It can control by doing.
- Fig. 6 shows the outline of the coating pattern 1 0 9 by adjusting the inclination angle ⁇ (see Fig. 1) of the annular vibrating surface 1 0 6 disposed adjacent to the outer peripheral edge of the bell-shaped force tip 1 0 3 It is a figure for demonstrating that the diameter of an outline changes. As shown by the arrows in Fig. 6, if the inclination angle 0 of the diverging vibrating surface 1 0 6 is increased and the opening degree of the vibrating surface 1 0 6 is narrowed, the outline of the application pattern 1 ⁇ ⁇ ⁇ 9 becomes small. It becomes cold. Similarly, the outer contour of the application pattern 100 can be adjusted by adjusting the relative front-rear position of the vibrating surface 106 and the bell-shaped force 103.
- the divided segments 1 0 6a of the vibrating surface 1 0 6 can independently control the adjustment of the relative longitudinal position with the tilt angle 0 and the bell-like force tip 1 0 3. This makes it possible to freely control the shape and size of the application pattern 109.
- the rotary coater 100 has a high voltage generator 110 and applies the high voltage generated by the high voltage generator 110 to the paint to charge the paint.
- the high voltage is applied directly to the bell force 103, but the invention is not limited to this method, and the paint may be charged by various methods known in the art. For example, it is possible to charge paint after it has been atomized by ultrasonic vibration by vibration surface 106.
- the rotary electrostatic sprayer 100 of the first embodiment described with reference to FIGS. 4 to 6 it is emitted from the outer peripheral edge of the bell cup 103 rotating at a relatively low speed.
- the paint is given ultrasonic vibration energy of the annular vibration surface 106.
- the paint is uniformly atomized.
- the particles of the paint are given directional kinetic energy by the ultrasonic vibration of the vibrating surface 106, and the paint is directed forward, ie towards the substrate.
- the particle size of the paint becomes uniform as well as becoming finer even compared to the conventional electrostatic coating technology that relies on air.
- the particle size of the paint is not less than 30 microns, but according to the ultrasonic atomization technology according to the present invention, the paint particle size is not more than 20 microns. It can be micronized.
- the particle size of the paint is made uniform, and therefore the particle size distribution has one peak, so that the coating efficiency and the coating film quality are improved.
- FIG. 7 and 8 show a rotary electrostatic sprayer 200 of the second embodiment.
- the same elements as the elements included in the coating machine 100 of the first embodiment described above are denoted by the same reference numerals, I omit the light.
- An ultrasonic excitation device 202 for applying ultrasonic vibration to the paint immediately after jumping out from the outer peripheral edge of the bell-shaped force chip 103 is adjacent to the outer peripheral edge of the bell-shaped force chip 103 It is arranged.
- the ultrasonic oscillator 202 has a plurality of ring-shaped frames 203 of different diameters arranged concentrically, as shown enlarged in FIG.
- a thin vibratory plate 204 is disposed between 3, 2 0 3.
- the thin vibrating plate 24 may be continuous in the circumferential direction, but preferably consists of segments 20 4 a divided in the circumferential direction, each segment 2 0 4 a It is preferable to connect the ultrasonic generator 250. Also, by independently controlling the frequency and amplitude of the ultrasonic wave generator 205 for each segment 204a, fine adjustment of the size and shape of the application pattern 1009 can be made. It is possible to
- the plurality of ring-shaped frames 203 described above are disposed in a plane extending perpendicularly to the axis of the bell-shaped force cup 103, and the paint discharged from the outer peripheral edge of the bell-shaped cup 103.
- the paint particles are atomized and directed forward by ultrasonic vibration from the vibration plate 24 while being transmitted through the ring-shaped frame 203 from the inner circumference side to the outer circumference side.
- Reference numeral 2006 in FIG. 5 denotes a passage 206 for recovering the paint splashed radially outward.
- FIG. 7 schematically shows how the paint atomized by the ultrasonic vibration energy by the ultrasonic vibration device 202 is directed to the object W to be coated.
- Reference numeral 2 0 7 in FIG. 7 denotes particles of paint atomized by ultrasonic vibration.
- Reference numeral 2 0 8 in FIG. 7 is a charging electrode.
- a high voltage supplied from a high voltage generator (not shown) is applied to the charging electrode 2 0 8 to charge the particles 2 0 7 of the paint.
- FIG. 9 shows an example in which, for example, the rotary electrostatic sprayer 100 of the first embodiment is installed on a paint line of a car.
- the electrostatic coating machine 100 is provided in a traveling device 20 consisting of a linear motor, robot, etc., and the bell power pin 103 and the vibrating surface 106 can be oscillated in all directions. .
- the rotational electrostatic sprayer 100 is controlled by the control signals S 1 and S 2 from the main control panel 21 so that the number of rotations of the air motor and the direction of the bell-shaped force pick-up 1 0 3 can be controlled.
- the mixing device 22 mixes the paint from the pumps 23 to 27 for the five primary colors (cyan, magenta, yellow, black and white). Then supply the paint supply pipe 104 (see Fig. 1). As a result, the target color can be generated by mixing immediately before the rotary electrostatic sprayer 100.
- the ultrasonic controller 28 controls the orientation of each segment 106 a of the vibrating surface 106 of the rotary electrostatic sprayer 100. Also, high voltage controller 29 controls the high voltage generated by high voltage generator 1 10 (see Figure 4).
- any vibration generator such as a magnetostrictive conversion element conventionally known can be employed.
- FIGS. 10 and 11 Another example of coating a relatively large object W such as an automobile body will be described with reference to FIGS. 10 and 11.
- the rotary electrostatic sprayer 1 of FIG. 1 is illustrated as a sprayer in FIGS. 10 and 11, the sprayers 10, 1 and 10 of FIGS. 2, 4 and 7 may be substituted instead. Apply 0 0, 2 0 0.
- a plurality of paint units U 1 to U 10 in which a plurality of paint machines 1 adjacent to each other are arranged in two rows and a first row L 1 and a second row L 2 are arranged parallel to each other are prepared. Paint of the car body W may be performed while reciprocating U (arrow Y) with respect to the coated surface of the article W to be coated. According to this, the film thickness of the paint adhering to the article W can be made uniform.
- the painting machines 1 included in the first row L 1 of each unit U and the painting machines 1 included in the second row L 2 are alternately arranged in a staggered manner.
- any of the coating machines to which the present invention is applied (for example, the sprayer described with reference to the rotary type coating machine 1 in FIG. 1 and FIG. 2) It is possible to adopt a complete coater or a hydraulic coater.
- rotary coaters 1, 100 and 200 do not require air to direct the paint to the substrate.
- the rotational speed of the rotary head 4 such as a bell cup may be relatively slow.
- the sprayer described with reference to FIG. 2 has little or no air or air. From such a thing, in the coating machine of this invention, it can coat in the state which made the coating machine approach with respect to the to-be-coated-article W.
- FIG. For example, in the conventional rotary type coating machine, although it arrange
- the distance from the object to be coated W is reduced, not only the coating efficiency can be improved, but also the value of high voltage for charging the coating material can be set low.
- the distance from the object to be coated W is about 6 0 k V to 90 0 k V in the present electrostatic coating machine, 1 10 k V to 3 0 k V if the distance from the object W to be coated is about 100 mm. It is good.
Landscapes
- Nozzles (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Special Spraying Apparatus (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04723084A EP1618964A4 (en) | 2003-03-27 | 2004-03-24 | COATING PROCESS AND COATING MACHINE |
JP2005504090A JP4385151B2 (ja) | 2003-03-27 | 2004-03-24 | 塗装方法及び塗装機 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-88586 | 2003-03-27 | ||
JP2003088586A JP2004290877A (ja) | 2003-03-27 | 2003-03-27 | 回転霧化塗装装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004085080A1 true WO2004085080A1 (ja) | 2004-10-07 |
Family
ID=33095124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/004122 WO2004085080A1 (ja) | 2003-03-27 | 2004-03-24 | 塗装方法及び塗装機 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7384670B2 (ja) |
EP (1) | EP1618964A4 (ja) |
JP (2) | JP2004290877A (ja) |
WO (1) | WO2004085080A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006289294A (ja) * | 2005-04-13 | 2006-10-26 | Takasago Tekko Kk | 金属、無機化合物及び/又は有機金属化合物のコーティング方法 |
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DE102004059218A1 (de) * | 2004-12-09 | 2006-06-14 | Hennecke Gmbh | Verfahren zur Herstellung von Folien oder Compound-Formteilen |
US8303874B2 (en) * | 2006-03-28 | 2012-11-06 | E I Du Pont De Nemours And Company | Solution spun fiber process |
DE102006022057B3 (de) * | 2006-05-11 | 2007-10-31 | Dürr Systems GmbH | Applikationselement für einen Rotationszerstäuber und zugehöriges Betriebsverfahren |
DE102010019612A1 (de) * | 2010-05-06 | 2011-11-10 | Dürr Systems GmbH | Beschichtungseinrichtung, insbesondere mit einem Applikationsgerät, und zugehöriges Beschichtungsverfahren, das einen zertropfenden Beschichtungsmittelstrahl ausgibt |
DE102012005261A1 (de) * | 2012-03-15 | 2013-09-19 | Eisenmann Ag | Rotationszerstäuber und Verfahren zum Aufbringen eines Beschichtungsmaterials auf einen Gegenstand |
DE102012010610A1 (de) | 2012-05-30 | 2013-12-05 | Eisenmann Ag | Verfahren zum Betreiben eines Rotationszerstäubers, Düsenkopf und Rotationszerstäuber mit einem solchen |
JP6669537B2 (ja) * | 2015-04-17 | 2020-03-18 | トヨタ車体株式会社 | 塗装装置及び塗装方法 |
JP6319233B2 (ja) * | 2015-08-28 | 2018-05-09 | トヨタ自動車株式会社 | 静電微粒化式塗装装置及び塗装方法 |
CN105772294A (zh) * | 2016-05-24 | 2016-07-20 | 李富平 | 一种喷涂均匀的汽车喷涂装置 |
CN108114846A (zh) * | 2018-01-25 | 2018-06-05 | 山东农业大学 | 一种利用超声驻波调控雾滴粒径的压力雾化喷头及控制方法 |
US11364516B2 (en) * | 2018-01-30 | 2022-06-21 | Ford Motor Company | Ultrasonic atomizer with acoustic focusing device |
DE102019102232A1 (de) * | 2018-01-30 | 2019-08-01 | Ford Motor Company | Ultraschallzerstäuber mit akustischer fokussiervorrichtung |
CN109453928B (zh) * | 2019-01-08 | 2020-11-24 | 河北科技大学 | 基于多自由度电机的喷涂设备 |
AT523636B1 (de) * | 2020-08-17 | 2021-10-15 | Ess Holding Gmbh | Zerstäubungsvorrichtung für ein Beschichtungsmittel |
US20230090908A1 (en) * | 2021-09-23 | 2023-03-23 | GM Global Technology Operations LLC | Paint spray nozzle for a paint spray system |
CN113798110B (zh) * | 2021-10-25 | 2023-08-08 | 方翠仙 | 一种汽车玻璃防水膜的超声波喷涂设备 |
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- 2003-03-27 JP JP2003088586A patent/JP2004290877A/ja active Pending
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2004
- 2004-03-24 JP JP2005504090A patent/JP4385151B2/ja not_active Expired - Lifetime
- 2004-03-24 WO PCT/JP2004/004122 patent/WO2004085080A1/ja active Application Filing
- 2004-03-24 EP EP04723084A patent/EP1618964A4/en not_active Withdrawn
- 2004-03-26 US US10/811,320 patent/US7384670B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP1618964A4 (en) | 2008-09-17 |
US20050136190A1 (en) | 2005-06-23 |
EP1618964A1 (en) | 2006-01-25 |
JPWO2004085080A1 (ja) | 2006-06-29 |
JP4385151B2 (ja) | 2009-12-16 |
US7384670B2 (en) | 2008-06-10 |
JP2004290877A (ja) | 2004-10-21 |
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