CA2480615C - Rotary atomizer and coating method by it - Google Patents
Rotary atomizer and coating method by it Download PDFInfo
- Publication number
- CA2480615C CA2480615C CA002480615A CA2480615A CA2480615C CA 2480615 C CA2480615 C CA 2480615C CA 002480615 A CA002480615 A CA 002480615A CA 2480615 A CA2480615 A CA 2480615A CA 2480615 C CA2480615 C CA 2480615C
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- CA
- Canada
- Prior art keywords
- paint
- spray
- gun
- nozzle
- bell
- 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.)
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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
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
- B05B1/1681—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, sliding valve or cock and a lift valve
-
- 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
- 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
- B05B5/0426—Means for supplying shaping gas
Abstract
A coating machine 3 serving as a rotary atomizer comprises a hollow unrotary paint nozzle shaft 5 provided in the center of a motor shaft 10 serving as its rotary shaft. The paint nozzle shaft 5 is provided at a tip thereof with a gun-spray paint nozzle 5g and a gun-spray air nozzle 5f on the outside of the gun-spray paint nozzle 5g in the diametrical direction, and a needle shaft 21 is disposed in a paint passage 5b in the paint nozzle shaft 5 so as to serve as a valve mechanism for selectively supplying paint to either a bell cup 4 or the gun-spray paint nozzle 5g.
Description
~hA-U()t CA
ROTARY ATOMIZER AND COATING METHOD BY IT
IIACKGROUNI) OF TI-IE INVENTION
E~ieiu of the Invention [00()1 ~ The present invention relates to a rotary atomizer which atomizes paint so as to coat- a target with the paint. In particular, tile present invention relates to a rotary atomizer which can serve as both a bell spray and a gun spray.
l~elat~d art [00(82 A rotary atomizer expands fluid paint ou an inner surface of at rotating bell cup so as fo atomize the paint by the centrifugal force, and electrifies the paint by static high voltage impressed on an atomizing head or the like and forms an electrostatic field formed between the atomizer and the grounded target, thereby performing electrostatic coating.
[Ot)03-~ There is a well-known conventional rotary atomizer havilzg a cup-like shaped head which is controlled in rotary speed for switching its usage between rotary actors a izing mode and air atomizing mode (as disclosed in the Japanese Patent Hei. 4->6674).
[t)004~ There is also a well-known conventional rotary atomizer which can adjust the amount of sprayed air for regulating width of a spray pattern (as disclosed in the :lapanese Patent Laid Open Gazette Hei. 10-71345).
[f)t)t):~~ f1 bell-type rotary atomizer makes a spray pattern of a diameter from about 20() to about 1000 mm by the centrifugal force of the rotating bell cup and the electrostatic relwVsion amon~~ electrostatically charged paint particles. Such a large spray pattern has the clif('iculty of closely coating targets such as small local points or small products.
Even if the charge of static ele-etricity is cut off for the purpose of obtaining a diametrically small spray pattern, the spray pattern is still large because of the centrifugal force and the cutting-off of the static electricity towers the paint transfer ~li~iciency steeply against the intention.
'hA-()U l CA
[0006] On the other hand, with regard t.o worl~ability of <:oating, since a sufficiently small spray pattern is not obtained with the bell-type rotary atomizer, a hand spray gun can he possibly reguired for finishing a local point or a small product, thereby causing ~rosa decline of workability and rise of cost.
SUMM~TLY ~Ij, THE IN~'ENTI~N
[0()07] nn object of the present invention is to provide a bell-type rotary atomizer which can achieve a diametrically small spray pattern for coating such parts as described above and can switch its spray pattern into either diametrically large or small one ut ar~y time.
[0008;[ To achieve the object, the bell-type rotary atomizer according to the present invention comprises a hollow unrotary part provided in the center of its rotary shaft, and provided with a gun-spray nozzle for shaping a diametrically small spray pattern. The gun-spray nozzle projects at the center of the rotary hell cup, and incorporates a valve mechanism I-or optionally switching a spray mode between a bell spray mode and a gun spr ay mode.
[00()9] The rotary atomizer according to the present invention performs centrifugal atomizing by rotating a conventional bell type atomizing head (hell cup) with an air ~T~otor or the lit<e. The bell cup atomizes paint into ,paint particles forming a spray l~~ottern of a certain size by the centrifugal force of rotation of the hell cup and the static electricity charged on the particles. Generally, to increase the efficiency of approach of the spray pattern to a target, circular shaping air is sprayed from the peripheral edge of the Dell cup so as to regulate the direction of spraying the paint particles in cooperation with the electrostatic force. However, tile diameter of the spray pattern cannot be smaller than a certain value regardless of increasing the flow rate of the shaping air.
[0()~(;~~ Then, for obtaining a small spray pattern, the gun-spray nozzle with a small diameter is disposed at the hollow unrotary part in the center cif the rotary shaft of the hell type rotary atomizer so that either the large or small pattern can be optionally selected.
[0011p The valve is disposed on a paint supply passage so as to optionally selectively supply paint to either a paint nozzle for the bell spray or a paint nozzle for the gun spray, ~i,/~-()()l CA
thereby obtaining both the large and small paint spray patterns with the one rotary atomizer. ~hhc rotary atomizer according to the present invention is connected to a direct current high voltage generator so as to electrify sprayed paint particles, thereby making electrostatic field between the rotary atomizer and a target for efficiently coating the (saint on the target.
[OUI ~J 1 n a first aspect of the invention, a rotary atomizer comprises: a bell cup rotated for «encrating a centrifugal (force so as to spread paint; a bell-spray air nozzle for spouting air ('or shaping a spray pattern of the paint from the bell cup; a rotary shaft for rotating the bell cup; a hollow unrotary part provided in the center of the rotary shaft; a ~~uo-spray paint nozzle provided at a tip part of the unrotary part; a paint passage provided in the hollow unrotary part for supplying paint to the gun-spray paint nozzle;
and a gun-spray air nozzle for spouting air to the paint spouted from the gun-spray paint nozzle, the gun-spray air nozzle being disposed diametrically outside of the gun-spray paint nozzle.
[()()1 i ~ Accordingly, the bell-type rotary atomizer can also serve as a gun spray for making a small spray pattern by using the center of its rotary shaft in which a paint supply passage is constructed simply and stably, thereby enhancing its value in opcrativity and utility.
[()()L=1~ In the first aspect, preferably, the paint passage is branched so as to also supply paint to the bell cup.
(;OOI:~-( ~ecordingly, the paint can be spouted in either the bell spray mode or the gun spray mode, and the common paint passage compactly disposed in the center of the rotary shaft of the rotary atomizer is shared between the bell cup for making a large spray pattern and the gun-spray paint nozzle for making a small spray pattern.
[0(116] Further preferably, a valve is provided in the hollow unrotary part for switching flow of paint in the paint passage to either the bell cup or the gun-spray paint nozzle.
[Oi)17) Accordingly, the rotary atomizer can be provided with a simple and durable mechanism for switching the spray of paint between the bell spray mode and the gun spray mode.
[OOI ~3] Further preferably, the rotary atomizer further comprises a control mechanism for switchin~~ ftow of air to either the bell-spray air nozzle or the gun-spray air nozzle rhA-t)(11 CA
depending can the switching of the flow of paint to either the bell cup or the gun-spray palllt 11a%zlc.
[OOl>) Accordingly, the spray of paint and air can be switched between the bell spray node ancL llve gun spray mode, and the rotary atomizer is provided with a durable mechanism -for ensuring high quality of coating whether it is in the gun spray mode or the bell spray mode.
[()02()J Ln a second aspect of the present invention, while a rotary atomizer comprises: a hell cup rotated for generating a centrifugal force so as to spread paint; a rotary shaft for rotating the bell cup; and a hollow unrotary part provided m the center of the rotary shaft, the hollow unrotary part having a tip formed with a gun-spray paint nozzle and a ~~un-spray air nozzle for spouting air to paint spouted from the gun-spray paint nozzle, the gun-spra~~ air nozzle being disposed diametrically outside of the gun-spray paint nozzle, a coating method by the; rotary atomizer comprises selecting whether paint is spouted from the bell cup or the gun-spray paint nozzle.
[0021y Accordin~~ly, time and cost for coating is reduced. Particularly, the time for switching between the gun spray mode and the bell spray mode is reduced so as to facilitate for reduction of unevenness of coating caused by the time lag.
[0022] In the second aspect, preferably, a valve provided in the hollow unrotary part is shifted so as to switch flow of paint to either the bell cup or the gun-spray paint nozzle.
[002:1=' Accordingly, the spray of ,paint can be stably switched between the bell spray mode and the gun spray mode, and the valve in the hollow unrotary part can be compactly disposed adjacent to the gun-spray paint nozzle so as to reduce the reaction time of the valve for the switching of the spray mode., thereby improving the value of the rotary atomizer in operativity and utility.
[0(?24~ Further preferably, air is spouted from the gun-spray air nozzle at the time of spouting paint from the gun-spray paint nozzle.
[0()25 Accordingly, t:he air for the gun spray can be easily obtained.
[002cij Further preferably, the rotary atomizer further comprises a bell-spray air nozzle for shouting air far shaping a spray pattern of the paint from the boll cup, wherein air is selectively spouted from either the bell-spray air nozzle or the gun-spray air nozzle depending on whether paint is spouted from the bell cup or the gun-spray paint nozzle.
ROTARY ATOMIZER AND COATING METHOD BY IT
IIACKGROUNI) OF TI-IE INVENTION
E~ieiu of the Invention [00()1 ~ The present invention relates to a rotary atomizer which atomizes paint so as to coat- a target with the paint. In particular, tile present invention relates to a rotary atomizer which can serve as both a bell spray and a gun spray.
l~elat~d art [00(82 A rotary atomizer expands fluid paint ou an inner surface of at rotating bell cup so as fo atomize the paint by the centrifugal force, and electrifies the paint by static high voltage impressed on an atomizing head or the like and forms an electrostatic field formed between the atomizer and the grounded target, thereby performing electrostatic coating.
[Ot)03-~ There is a well-known conventional rotary atomizer havilzg a cup-like shaped head which is controlled in rotary speed for switching its usage between rotary actors a izing mode and air atomizing mode (as disclosed in the Japanese Patent Hei. 4->6674).
[t)004~ There is also a well-known conventional rotary atomizer which can adjust the amount of sprayed air for regulating width of a spray pattern (as disclosed in the :lapanese Patent Laid Open Gazette Hei. 10-71345).
[f)t)t):~~ f1 bell-type rotary atomizer makes a spray pattern of a diameter from about 20() to about 1000 mm by the centrifugal force of the rotating bell cup and the electrostatic relwVsion amon~~ electrostatically charged paint particles. Such a large spray pattern has the clif('iculty of closely coating targets such as small local points or small products.
Even if the charge of static ele-etricity is cut off for the purpose of obtaining a diametrically small spray pattern, the spray pattern is still large because of the centrifugal force and the cutting-off of the static electricity towers the paint transfer ~li~iciency steeply against the intention.
'hA-()U l CA
[0006] On the other hand, with regard t.o worl~ability of <:oating, since a sufficiently small spray pattern is not obtained with the bell-type rotary atomizer, a hand spray gun can he possibly reguired for finishing a local point or a small product, thereby causing ~rosa decline of workability and rise of cost.
SUMM~TLY ~Ij, THE IN~'ENTI~N
[0()07] nn object of the present invention is to provide a bell-type rotary atomizer which can achieve a diametrically small spray pattern for coating such parts as described above and can switch its spray pattern into either diametrically large or small one ut ar~y time.
[0008;[ To achieve the object, the bell-type rotary atomizer according to the present invention comprises a hollow unrotary part provided in the center of its rotary shaft, and provided with a gun-spray nozzle for shaping a diametrically small spray pattern. The gun-spray nozzle projects at the center of the rotary hell cup, and incorporates a valve mechanism I-or optionally switching a spray mode between a bell spray mode and a gun spr ay mode.
[00()9] The rotary atomizer according to the present invention performs centrifugal atomizing by rotating a conventional bell type atomizing head (hell cup) with an air ~T~otor or the lit<e. The bell cup atomizes paint into ,paint particles forming a spray l~~ottern of a certain size by the centrifugal force of rotation of the hell cup and the static electricity charged on the particles. Generally, to increase the efficiency of approach of the spray pattern to a target, circular shaping air is sprayed from the peripheral edge of the Dell cup so as to regulate the direction of spraying the paint particles in cooperation with the electrostatic force. However, tile diameter of the spray pattern cannot be smaller than a certain value regardless of increasing the flow rate of the shaping air.
[0()~(;~~ Then, for obtaining a small spray pattern, the gun-spray nozzle with a small diameter is disposed at the hollow unrotary part in the center cif the rotary shaft of the hell type rotary atomizer so that either the large or small pattern can be optionally selected.
[0011p The valve is disposed on a paint supply passage so as to optionally selectively supply paint to either a paint nozzle for the bell spray or a paint nozzle for the gun spray, ~i,/~-()()l CA
thereby obtaining both the large and small paint spray patterns with the one rotary atomizer. ~hhc rotary atomizer according to the present invention is connected to a direct current high voltage generator so as to electrify sprayed paint particles, thereby making electrostatic field between the rotary atomizer and a target for efficiently coating the (saint on the target.
[OUI ~J 1 n a first aspect of the invention, a rotary atomizer comprises: a bell cup rotated for «encrating a centrifugal (force so as to spread paint; a bell-spray air nozzle for spouting air ('or shaping a spray pattern of the paint from the bell cup; a rotary shaft for rotating the bell cup; a hollow unrotary part provided in the center of the rotary shaft; a ~~uo-spray paint nozzle provided at a tip part of the unrotary part; a paint passage provided in the hollow unrotary part for supplying paint to the gun-spray paint nozzle;
and a gun-spray air nozzle for spouting air to the paint spouted from the gun-spray paint nozzle, the gun-spray air nozzle being disposed diametrically outside of the gun-spray paint nozzle.
[()()1 i ~ Accordingly, the bell-type rotary atomizer can also serve as a gun spray for making a small spray pattern by using the center of its rotary shaft in which a paint supply passage is constructed simply and stably, thereby enhancing its value in opcrativity and utility.
[()()L=1~ In the first aspect, preferably, the paint passage is branched so as to also supply paint to the bell cup.
(;OOI:~-( ~ecordingly, the paint can be spouted in either the bell spray mode or the gun spray mode, and the common paint passage compactly disposed in the center of the rotary shaft of the rotary atomizer is shared between the bell cup for making a large spray pattern and the gun-spray paint nozzle for making a small spray pattern.
[0(116] Further preferably, a valve is provided in the hollow unrotary part for switching flow of paint in the paint passage to either the bell cup or the gun-spray paint nozzle.
[Oi)17) Accordingly, the rotary atomizer can be provided with a simple and durable mechanism for switching the spray of paint between the bell spray mode and the gun spray mode.
[OOI ~3] Further preferably, the rotary atomizer further comprises a control mechanism for switchin~~ ftow of air to either the bell-spray air nozzle or the gun-spray air nozzle rhA-t)(11 CA
depending can the switching of the flow of paint to either the bell cup or the gun-spray palllt 11a%zlc.
[OOl>) Accordingly, the spray of paint and air can be switched between the bell spray node ancL llve gun spray mode, and the rotary atomizer is provided with a durable mechanism -for ensuring high quality of coating whether it is in the gun spray mode or the bell spray mode.
[()02()J Ln a second aspect of the present invention, while a rotary atomizer comprises: a hell cup rotated for generating a centrifugal force so as to spread paint; a rotary shaft for rotating the bell cup; and a hollow unrotary part provided m the center of the rotary shaft, the hollow unrotary part having a tip formed with a gun-spray paint nozzle and a ~~un-spray air nozzle for spouting air to paint spouted from the gun-spray paint nozzle, the gun-spra~~ air nozzle being disposed diametrically outside of the gun-spray paint nozzle, a coating method by the; rotary atomizer comprises selecting whether paint is spouted from the bell cup or the gun-spray paint nozzle.
[0021y Accordin~~ly, time and cost for coating is reduced. Particularly, the time for switching between the gun spray mode and the bell spray mode is reduced so as to facilitate for reduction of unevenness of coating caused by the time lag.
[0022] In the second aspect, preferably, a valve provided in the hollow unrotary part is shifted so as to switch flow of paint to either the bell cup or the gun-spray paint nozzle.
[002:1=' Accordingly, the spray of ,paint can be stably switched between the bell spray mode and the gun spray mode, and the valve in the hollow unrotary part can be compactly disposed adjacent to the gun-spray paint nozzle so as to reduce the reaction time of the valve for the switching of the spray mode., thereby improving the value of the rotary atomizer in operativity and utility.
[0(?24~ Further preferably, air is spouted from the gun-spray air nozzle at the time of spouting paint from the gun-spray paint nozzle.
[0()25 Accordingly, t:he air for the gun spray can be easily obtained.
[002cij Further preferably, the rotary atomizer further comprises a bell-spray air nozzle for shouting air far shaping a spray pattern of the paint from the boll cup, wherein air is selectively spouted from either the bell-spray air nozzle or the gun-spray air nozzle depending on whether paint is spouted from the bell cup or the gun-spray paint nozzle.
hA-~)t) I LA
[Ot)27~ Accordingly, the high quality of coating is ensured whether it is in the gun spray mode and the bell spray node.
[0()2H~ These; other and further objects, features and advantages will appear more fully from the following description with reference to accompanying drawings.
I3RiEF DESCRIPTION OF TIIE DRAWINGS
[Of)29~ Fig. J illustrates usage patterns of a rotary atomizer according to an embodiment of the present invention.
[003()-~ Fig. 2 is a sectional side view of the rotary atomizer.
[0031] Fig. 3 is a perspective view of a bell cup.
[00;2[ Fig. 4 is a sectional side view of a paint nozzle shaft.
[0033 Fi~~. 5 is a sectional side view of a tip part of the paint nozzle shaft when the rotary atomizer is set in a bell spray mode.
[0()34E Fig. ~ is a sectional side view of a principal portion of the rotary atomizer showing frlows of paint and shaping air when it is set in the bell spray mode.
[00359 h'ig. 7 is a sectional side view of the tip part of the paint nozzle shaft when the rotary atomizer is set in a gun spray mode.
[003f>~ E;i~~. ~ is a sectional side view of the principal portion oi' the rotary atomizer showing flows of paint and air when it is set in the gun spray anode.
DETAILED DESCRIPTION OF THE l(N~ENTION
[0()37( Txplanation will be given on an ernbodim.ent of the present invention according to attached drawings.
[003~~ Fig. 1 illustrates an example of usage patterns of a coating machine 3.
Fig. 1 (a) shows the coating machine 3 used in a bell spray mode, and Fig. 1 (~h) shows the coating machine 3 used in a ~~un spray mode.
[003N] As shown in Fig. 1, the coating machine 3 serving as an example of the rotary atou~izer according to the present invention is attached to a manipulator of a coating robot 121.
rhA-~)t) 1 ~.A
[0040 As shown in Fig. 1 (a), in the coating machine 3 set in the bell spray mode, by rotating a bell cup and electrostati.cally charging the paint particles, the paint on the bell cuh is atomized by the centrifugal force and the static electricity. In this mode, coating is performed with a diametrically large spray pattern. As shown in Fig. 1 (b), at the time of finishing a local point or a small product, the coating machine 3 is changed into the ~,~w7 shrav mode so as to coat with a diametrically small spray pattern.
[O(»t ~ Accordingly, only the coating machine 3 is good enough to coat whether the clianoetrically large or small .spray pattern is required, thereby reducing a coating time and improving the efficiency i~~ manufacturing thereof.
[4)042-~ Next, explanation will be given on construction of the coating machine 3 according to Figs. 2 and 3.
(Ot143 ~ Fig. 2 is a sectional side view of the coating machine 3, and Fig. 3 is a pers)~cctivc view of a bell cup 4 thereof. The coating machine ~ comprises the bell cup (rotary atomizing head) 4 for atomizing paint, a hollow motor shaft 10 whose tip is ataachcd to the bell cup 4 and which is rotated integrally with the bell cup 4, an air motor C for rotating the motor shaft 10, a paint nozzle shaft 5 extended to an inside of the bell cup 4 through a hollow part of the motor shaft 10 so as to supply paint to the be:Jl cup 4, and an air cap 11 having a bell-spray air nozzle 11b for spouting shaping air hfovvo to the paint dispersed radially outward from an peripheral edge of the bell cup 4.
I'he air motor < is supplied with compressed air so as to drive the motor shaft 10 at high speed.
[O()44~ A tip part of the paint nozzle shaft 5 projects forward from the center of a front auo(ace o(~ the bell coup 4, and bell-spray paint nozzles 4b are open at the front surface of i I;c; hell cup 4 around the paint ncazzle shaft 5.
[00~5~ A high-voltage generator- (not shown) impresses high voltage to the bell cup 4 through the air motor 6 and the paint nozzle shaft 5 so as to electrify paint particles atomized by rotation of the bell cup 4, thereby ensuring high paint transfer efficiency of the, coating machine 3.
[Od)4fi-~ Fig. 4 is a sectional side view of the paint nozzle shaft S. T'he paint nozzle shaft .5 penetrates the center of the motor shaft I0 serving as the rotary shaft of the coating machine 3, so as to serve as an unrotary part of the coating machine 3, i.e., be unrotatable regardless of the rotation of the motor shalvt 10.
C~
' hn-t)t> L~A
[007) A paint passage 5b is ~rxially farmed in t>le center of tile paint nozzle shaft 5 so a.~s to pass the paint supplied to the bell cup 4. A needle valve shaft 21 is disposed in the 1>ai,lt passage 5b so as to be shifted betv,~een two spray positions. Air passages Sc for Lhe ~~un spray acre fomoed within the paint nozzle shaft 5 around the paint passage Sb.
[()048 ',he tip part of the paint nozzle shaft S is formed in the center portion thereof with a gun-spray paint nozzle 5g coaxially connected to the paint passage Sb, and tip ends o1 the air passages Sc are formed into gun-spray air nozzles Sf around (i.e., cliametric:ally outside of) the gun-spray paint nozzle 5g so as t.o be open at the ti,p end of t:he paint nozzle shaft S.
[~l)~~.I Bell-spray paint .inner nozzles Sh are h:ormecl to extend substantially radially arum the paint passage 5b within the ti-p part of the paint nozzle shaft 5 behind the gun-spray Ioaint nozzle 5g without intersecting the air passages 5c.
[B()St)~ 'hhe bell-spray paint inner nozzles 5h are positioned to communicate with a bell-like paint gallery 4h formed within the bell cup 4 in the state that the paint nozzle shaft is inserted into the bell cup 4. The bell-like paint gallery 41a branches into the bell-sprav paint nozzles 4b open at the front surface of the bell cup 4.
Accordingly, paint can hc; s~,~ppli~c.1 'from the paint passage Sb to the bell-spray paint nozzles 4b through the hell-spray paint inner nozzles 5h and the bell-like paint gallery ~h.
[005 l ) Tloe needle shaft 21 is disposed in the ,paint nozzle sha:fl 5, ynd formed at its tip hart into a switching valve part 21b penetrated by paint holes 21c in the longitudinal clireceion of the needle shaft 2:1..
[Ot)a2~ The switching valve part 21b selectively closes either the gun-spray paint nozzle 5g or the bell-spray pant inner nozzles 5h so as to supply paint to the other from the loaint passage 5b.
[OU53] Ncxt, explanation will be given on the valve construction of the needle shaft 21.
I-or switching the spray mode between the bell spray mode and the gun spray mode.
[()()5~y 'l'he coasting machine 3 is switched between tine bell spray mode and the gun spray mode by longitudinal sliding of the needle shaft 21.
[()t)~5y Eiirstly, explanation will be given on the construction of the coating machine 3 set in the bell spray mode.
rhA-()() l CA
[00~<) Fig. 5 is a sectional side view of the valve construction set in the bell spray o~ocle, hig. (~ is a sectional side view of the valve construction showing flows of paint and shaping air i-n the bell. spray mode.
[0()57 'l'he needle shaft 21 is shifted between the bell spray position for spraying paint f~roi» the bell-spray paint nozzles 4b of the bell cup 4 and the gun spray position for spraying paint from the gun-spray paint nozzle 5g of the paint nozzle shaft 5.
The gun-slora~: paint nozzle 5g is positioned on the tip end of the central axis of the paint nozzle sh~rll 5. The paint holes 21c provided in the switching valve part 21b are offset from the gun-spray paint nozzle Sg. As shown in Fig. 5, when the needle shaft 2:1 is slid forward, the front surface of the switching valve part 21b of the needle shaft 21 abuts against the inner surface of the needle nozzle shaft 5 so as to close the paint holes 21c, and simultaneously the bell-spray paint inner nozzles 5h coming behind the switching valve l~~rrt 2_Lb are opened for free passage to the bell-like paint gallery ~lh, so that the paint sripplie;d from the paint passagc° 5b is sprayed fi-on~ the hell-spray paint nozzles 4b ~Ur-ou~yh the bell-spray paint inner nozzles 5h and the bell-like paint gallery 4h.
[(lOSls~ 'hhe loeripheral edge of the bc,ll cup 4 is wormed so as to guide shaping air sl:~roycd from the bell-spray air nozzle 1.1b forward, and so the paint sprayed from the bell-spray paint nozzles 4b :is spouted forward by the shaping air, thereby making the slorov pattern in the bell spray mode.
[0()S~a~ When the coating machine 3 has the spray of the paint switched into the bell sl~rav mode by the forward sliding of the needle shaft 21, the bell-spray air nozzle 11b is -uitomaitically set to spray shaping air for the bell spray.
[0(?6(1-~ Namely, the passage of air is switched cooperation with the switching of the loaint passage, whereby paint spraying is stabilized regardless of svaitching of the spray pattern. The air passage switching mechanism may be provided in the coating machine _i or in a piping connected to the coating machine 3.
[00!>l [ l~ext, explanation will be given on the valve construction in the gun spray mode.
[O(162y t~ig. 7 is a sectional side view of the valve construction set in the gun spray mode. f i~. ~ is a sectiomil side view of the valve construction showing flows of paint crud air in tlm gun spra.ry l~c~de.
[O()b:~] As shown in l~ig. 7, by sii.ding the switching valve part 21b of the needle shaft 2l backward, the bell-spray paint inner nozzles 5h are closed and the gun-spray paint rl'A-()() l CA
noz-r.le 5g is opened. In this regard, the front part of the paint passage 5b in which the switching valve part 21b slidably fits is stepped at .its rear end so that the rear part of the painC passage 5b therebehind becomes diametrically smaller than the front part. When the switching valve part 21b is slid backward, the switching valve part 21b abuts at its rear end against the step of the paint: nozzle shaft 5 between the front and rear parts thereof , thereby closing the paint passage 5b. At this time, the paint holes 21c provided in the switching valve part 21b connect the gun-spray paint nozzle 5g to the paint pass<ngc: 5b thcrethrough. Accordingly, paint supplied from the paint passage 5b is spr<~vecl from the gun-spray paint nozzle 5g.
[(?()~i~i] ~fhc gun-spray atomizing air nozzles 5f are provided around the gun-spray paint oozzlc 5g. faint .from the gun-spray paint nozzle 5g is atomized and sprayed forward by air spouted from the gun-spray atomizing air nozzles 5f, thereby making the spray I~aiC~rn in the gun spray mode.
[0065] When the coating machine 3 has the paint spray switched into the gun spray movie by the bacl~ward sliding of the needle shai~t 21, the air passage is also switched to spray air from the gun-spray air nozzle 5f.
[0066] In the coating machine 3, since the paint nozzle shaft 5 is unrotatable, paint sprayed from the gun-spray paint nozzle 5g disposed at the tip of the paint nozzle shaft is t-ree from expansion by rotation, whereby the paint spraying is suitable to coat a narrow section. Since the paint nozzle shaft 5 is not rotated, paint is supplied stably through the paint passage 5b provided in the paint nozzle shaft 5, and therefore unevenness oi- the point spraying is reduced so as to ensure stable coating.
[0067] Accordingly, the bell spray mode and the gun spray mode can be switched to each other easily by sliding the needle shaft 21. The air passage is switched corresponding to switching of the paint ,passage between the bell spray mode and the gun spray mode, whereby the paint spray is stable regardless of switching of the spray pattern.
[0068] It is further understood by those skilled in the art that the foregoing description is a preferred embodiment of the disclosed apparatus and that various changes and modifications may be made in tl~e invention without departing from the spirit and scope tlaereoh.
[Ot)27~ Accordingly, the high quality of coating is ensured whether it is in the gun spray mode and the bell spray node.
[0()2H~ These; other and further objects, features and advantages will appear more fully from the following description with reference to accompanying drawings.
I3RiEF DESCRIPTION OF TIIE DRAWINGS
[Of)29~ Fig. J illustrates usage patterns of a rotary atomizer according to an embodiment of the present invention.
[003()-~ Fig. 2 is a sectional side view of the rotary atomizer.
[0031] Fig. 3 is a perspective view of a bell cup.
[00;2[ Fig. 4 is a sectional side view of a paint nozzle shaft.
[0033 Fi~~. 5 is a sectional side view of a tip part of the paint nozzle shaft when the rotary atomizer is set in a bell spray mode.
[0()34E Fig. ~ is a sectional side view of a principal portion of the rotary atomizer showing frlows of paint and shaping air when it is set in the bell spray mode.
[00359 h'ig. 7 is a sectional side view of the tip part of the paint nozzle shaft when the rotary atomizer is set in a gun spray mode.
[003f>~ E;i~~. ~ is a sectional side view of the principal portion oi' the rotary atomizer showing flows of paint and air when it is set in the gun spray anode.
DETAILED DESCRIPTION OF THE l(N~ENTION
[0()37( Txplanation will be given on an ernbodim.ent of the present invention according to attached drawings.
[003~~ Fig. 1 illustrates an example of usage patterns of a coating machine 3.
Fig. 1 (a) shows the coating machine 3 used in a bell spray mode, and Fig. 1 (~h) shows the coating machine 3 used in a ~~un spray mode.
[003N] As shown in Fig. 1, the coating machine 3 serving as an example of the rotary atou~izer according to the present invention is attached to a manipulator of a coating robot 121.
rhA-~)t) 1 ~.A
[0040 As shown in Fig. 1 (a), in the coating machine 3 set in the bell spray mode, by rotating a bell cup and electrostati.cally charging the paint particles, the paint on the bell cuh is atomized by the centrifugal force and the static electricity. In this mode, coating is performed with a diametrically large spray pattern. As shown in Fig. 1 (b), at the time of finishing a local point or a small product, the coating machine 3 is changed into the ~,~w7 shrav mode so as to coat with a diametrically small spray pattern.
[O(»t ~ Accordingly, only the coating machine 3 is good enough to coat whether the clianoetrically large or small .spray pattern is required, thereby reducing a coating time and improving the efficiency i~~ manufacturing thereof.
[4)042-~ Next, explanation will be given on construction of the coating machine 3 according to Figs. 2 and 3.
(Ot143 ~ Fig. 2 is a sectional side view of the coating machine 3, and Fig. 3 is a pers)~cctivc view of a bell cup 4 thereof. The coating machine ~ comprises the bell cup (rotary atomizing head) 4 for atomizing paint, a hollow motor shaft 10 whose tip is ataachcd to the bell cup 4 and which is rotated integrally with the bell cup 4, an air motor C for rotating the motor shaft 10, a paint nozzle shaft 5 extended to an inside of the bell cup 4 through a hollow part of the motor shaft 10 so as to supply paint to the be:Jl cup 4, and an air cap 11 having a bell-spray air nozzle 11b for spouting shaping air hfovvo to the paint dispersed radially outward from an peripheral edge of the bell cup 4.
I'he air motor < is supplied with compressed air so as to drive the motor shaft 10 at high speed.
[O()44~ A tip part of the paint nozzle shaft 5 projects forward from the center of a front auo(ace o(~ the bell coup 4, and bell-spray paint nozzles 4b are open at the front surface of i I;c; hell cup 4 around the paint ncazzle shaft 5.
[00~5~ A high-voltage generator- (not shown) impresses high voltage to the bell cup 4 through the air motor 6 and the paint nozzle shaft 5 so as to electrify paint particles atomized by rotation of the bell cup 4, thereby ensuring high paint transfer efficiency of the, coating machine 3.
[Od)4fi-~ Fig. 4 is a sectional side view of the paint nozzle shaft S. T'he paint nozzle shaft .5 penetrates the center of the motor shaft I0 serving as the rotary shaft of the coating machine 3, so as to serve as an unrotary part of the coating machine 3, i.e., be unrotatable regardless of the rotation of the motor shalvt 10.
C~
' hn-t)t> L~A
[007) A paint passage 5b is ~rxially farmed in t>le center of tile paint nozzle shaft 5 so a.~s to pass the paint supplied to the bell cup 4. A needle valve shaft 21 is disposed in the 1>ai,lt passage 5b so as to be shifted betv,~een two spray positions. Air passages Sc for Lhe ~~un spray acre fomoed within the paint nozzle shaft 5 around the paint passage Sb.
[()048 ',he tip part of the paint nozzle shaft S is formed in the center portion thereof with a gun-spray paint nozzle 5g coaxially connected to the paint passage Sb, and tip ends o1 the air passages Sc are formed into gun-spray air nozzles Sf around (i.e., cliametric:ally outside of) the gun-spray paint nozzle 5g so as t.o be open at the ti,p end of t:he paint nozzle shaft S.
[~l)~~.I Bell-spray paint .inner nozzles Sh are h:ormecl to extend substantially radially arum the paint passage 5b within the ti-p part of the paint nozzle shaft 5 behind the gun-spray Ioaint nozzle 5g without intersecting the air passages 5c.
[B()St)~ 'hhe bell-spray paint inner nozzles 5h are positioned to communicate with a bell-like paint gallery 4h formed within the bell cup 4 in the state that the paint nozzle shaft is inserted into the bell cup 4. The bell-like paint gallery 41a branches into the bell-sprav paint nozzles 4b open at the front surface of the bell cup 4.
Accordingly, paint can hc; s~,~ppli~c.1 'from the paint passage Sb to the bell-spray paint nozzles 4b through the hell-spray paint inner nozzles 5h and the bell-like paint gallery ~h.
[005 l ) Tloe needle shaft 21 is disposed in the ,paint nozzle sha:fl 5, ynd formed at its tip hart into a switching valve part 21b penetrated by paint holes 21c in the longitudinal clireceion of the needle shaft 2:1..
[Ot)a2~ The switching valve part 21b selectively closes either the gun-spray paint nozzle 5g or the bell-spray pant inner nozzles 5h so as to supply paint to the other from the loaint passage 5b.
[OU53] Ncxt, explanation will be given on the valve construction of the needle shaft 21.
I-or switching the spray mode between the bell spray mode and the gun spray mode.
[()()5~y 'l'he coasting machine 3 is switched between tine bell spray mode and the gun spray mode by longitudinal sliding of the needle shaft 21.
[()t)~5y Eiirstly, explanation will be given on the construction of the coating machine 3 set in the bell spray mode.
rhA-()() l CA
[00~<) Fig. 5 is a sectional side view of the valve construction set in the bell spray o~ocle, hig. (~ is a sectional side view of the valve construction showing flows of paint and shaping air i-n the bell. spray mode.
[0()57 'l'he needle shaft 21 is shifted between the bell spray position for spraying paint f~roi» the bell-spray paint nozzles 4b of the bell cup 4 and the gun spray position for spraying paint from the gun-spray paint nozzle 5g of the paint nozzle shaft 5.
The gun-slora~: paint nozzle 5g is positioned on the tip end of the central axis of the paint nozzle sh~rll 5. The paint holes 21c provided in the switching valve part 21b are offset from the gun-spray paint nozzle Sg. As shown in Fig. 5, when the needle shaft 2:1 is slid forward, the front surface of the switching valve part 21b of the needle shaft 21 abuts against the inner surface of the needle nozzle shaft 5 so as to close the paint holes 21c, and simultaneously the bell-spray paint inner nozzles 5h coming behind the switching valve l~~rrt 2_Lb are opened for free passage to the bell-like paint gallery ~lh, so that the paint sripplie;d from the paint passagc° 5b is sprayed fi-on~ the hell-spray paint nozzles 4b ~Ur-ou~yh the bell-spray paint inner nozzles 5h and the bell-like paint gallery 4h.
[(lOSls~ 'hhe loeripheral edge of the bc,ll cup 4 is wormed so as to guide shaping air sl:~roycd from the bell-spray air nozzle 1.1b forward, and so the paint sprayed from the bell-spray paint nozzles 4b :is spouted forward by the shaping air, thereby making the slorov pattern in the bell spray mode.
[0()S~a~ When the coating machine 3 has the spray of the paint switched into the bell sl~rav mode by the forward sliding of the needle shaft 21, the bell-spray air nozzle 11b is -uitomaitically set to spray shaping air for the bell spray.
[0(?6(1-~ Namely, the passage of air is switched cooperation with the switching of the loaint passage, whereby paint spraying is stabilized regardless of svaitching of the spray pattern. The air passage switching mechanism may be provided in the coating machine _i or in a piping connected to the coating machine 3.
[00!>l [ l~ext, explanation will be given on the valve construction in the gun spray mode.
[O(162y t~ig. 7 is a sectional side view of the valve construction set in the gun spray mode. f i~. ~ is a sectiomil side view of the valve construction showing flows of paint crud air in tlm gun spra.ry l~c~de.
[O()b:~] As shown in l~ig. 7, by sii.ding the switching valve part 21b of the needle shaft 2l backward, the bell-spray paint inner nozzles 5h are closed and the gun-spray paint rl'A-()() l CA
noz-r.le 5g is opened. In this regard, the front part of the paint passage 5b in which the switching valve part 21b slidably fits is stepped at .its rear end so that the rear part of the painC passage 5b therebehind becomes diametrically smaller than the front part. When the switching valve part 21b is slid backward, the switching valve part 21b abuts at its rear end against the step of the paint: nozzle shaft 5 between the front and rear parts thereof , thereby closing the paint passage 5b. At this time, the paint holes 21c provided in the switching valve part 21b connect the gun-spray paint nozzle 5g to the paint pass<ngc: 5b thcrethrough. Accordingly, paint supplied from the paint passage 5b is spr<~vecl from the gun-spray paint nozzle 5g.
[(?()~i~i] ~fhc gun-spray atomizing air nozzles 5f are provided around the gun-spray paint oozzlc 5g. faint .from the gun-spray paint nozzle 5g is atomized and sprayed forward by air spouted from the gun-spray atomizing air nozzles 5f, thereby making the spray I~aiC~rn in the gun spray mode.
[0065] When the coating machine 3 has the paint spray switched into the gun spray movie by the bacl~ward sliding of the needle shai~t 21, the air passage is also switched to spray air from the gun-spray air nozzle 5f.
[0066] In the coating machine 3, since the paint nozzle shaft 5 is unrotatable, paint sprayed from the gun-spray paint nozzle 5g disposed at the tip of the paint nozzle shaft is t-ree from expansion by rotation, whereby the paint spraying is suitable to coat a narrow section. Since the paint nozzle shaft 5 is not rotated, paint is supplied stably through the paint passage 5b provided in the paint nozzle shaft 5, and therefore unevenness oi- the point spraying is reduced so as to ensure stable coating.
[0067] Accordingly, the bell spray mode and the gun spray mode can be switched to each other easily by sliding the needle shaft 21. The air passage is switched corresponding to switching of the paint ,passage between the bell spray mode and the gun spray mode, whereby the paint spray is stable regardless of switching of the spray pattern.
[0068] It is further understood by those skilled in the art that the foregoing description is a preferred embodiment of the disclosed apparatus and that various changes and modifications may be made in tl~e invention without departing from the spirit and scope tlaereoh.
Claims (8)
1. A rotary atomizer comprising:
a bell cup rotated for generating a centrifugal force so as to spread paint;
a bell-spray air nozzle for spouting air for shaping a spray pattern of the paint from the bell cup;
a rotary shaft for rotating the bell cup;
a hollow unrotary part provided in the center of the rotary shaft;
a gun-spray paint nozzle provided at a tip part of the unrotary part;
a paint passage provided in the hollow unrotary part for supplying paint to the gun-spray paint nozzle; and a gun-spray air nozzle for spouting air to the paint spouted from the gunspray paint nozzle, the gun-spray air nozzle being disposed diametrically outside of the gunspray paint nozzle.
a bell cup rotated for generating a centrifugal force so as to spread paint;
a bell-spray air nozzle for spouting air for shaping a spray pattern of the paint from the bell cup;
a rotary shaft for rotating the bell cup;
a hollow unrotary part provided in the center of the rotary shaft;
a gun-spray paint nozzle provided at a tip part of the unrotary part;
a paint passage provided in the hollow unrotary part for supplying paint to the gun-spray paint nozzle; and a gun-spray air nozzle for spouting air to the paint spouted from the gunspray paint nozzle, the gun-spray air nozzle being disposed diametrically outside of the gunspray paint nozzle.
2. The rotary atomizer as set forth in claim 1, wherein the paint passage is branched so as to also supply paint to the bell cup.
3. The rotary atomizer as set forth in claim 2, further comprising:
a valve provided in the hollow unrotary part for switching flow of paint in the paint passage to either the bell cup or the gun-spray paint nozzle.
a valve provided in the hollow unrotary part for switching flow of paint in the paint passage to either the bell cup or the gun-spray paint nozzle.
4. The rotary atomizer as set forth in claim 3, further comprising:
a control mechanism for switching flow of air to either the bell-spray air nozzle or the gun-spray air nozzle depending on the switching of the flow of paint to either the bell cup or the gun-spray paint nozzle.
a control mechanism for switching flow of air to either the bell-spray air nozzle or the gun-spray air nozzle depending on the switching of the flow of paint to either the bell cup or the gun-spray paint nozzle.
5. A coating method by a rotary atomizer, the rotary atomizer comprising: a bell cup rotated for generating a centrifugal force so as to spread paint; a rotary shaft for rotating the bell cup; and a hollow unrotary part provided in the center of the rotary shaft, the hollow unrotary part having at tip formed with a gun-spray paint nozzle and a gun-spray air nozzle for spouting air to paint spouted from the gun-spray paint nozzle, the gun-spray air nozzle being disposed diametrically outside of the gun-spray paint nozzle, wherein the coating method comprises selecting whether paint is spouted from the bell cup or the gun-spray paint nozzle.
6. The coating method as set forth in claim 5, wherein the selecting step comprises the step of shifting a valve provided in the hollow unrotary part so as to switch flow of paint to either the bell cup or the gun-spray paint nozzle.
7. The coating method as set forth in claim 6, wherein the method further comprises the step of spouting air from the gun-spray air nozzle at the time of spouting paint from the gun-spray paint nozzle.
8. The coating method as set forth in claim 7, the rotary atomizer further comprising a bell-spray air nozzle for spouting air for shaping a spray pattern of the paint from the bell cup, wherein the method further comprises the step of selectively spouting air from either the bell-spray air nozzle or the gun-spray air nozzle depending on whether paint is spouted from the bell cup or the gun-spray paint nozzle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003318788A JP4428973B2 (en) | 2003-09-10 | 2003-09-10 | Rotating atomizing coating apparatus and coating method |
| JP2003-318788 | 2003-09-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2480615A1 CA2480615A1 (en) | 2005-03-10 |
| CA2480615C true CA2480615C (en) | 2009-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002480615A Expired - Fee Related CA2480615C (en) | 2003-09-10 | 2004-09-07 | Rotary atomizer and coating method by it |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7143963B2 (en) |
| EP (1) | EP1514605B1 (en) |
| JP (1) | JP4428973B2 (en) |
| CN (1) | CN1305583C (en) |
| CA (1) | CA2480615C (en) |
| DE (1) | DE602004027693D1 (en) |
Families Citing this family (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7661610B2 (en) * | 2005-08-01 | 2010-02-16 | Abb K.K. | Electrostatic coating device |
| JP2007090221A (en) * | 2005-09-28 | 2007-04-12 | Yutaka Electronics Industry Co Ltd | Spray nozzle and spray system |
| US8540504B2 (en) * | 2007-04-20 | 2013-09-24 | National Applied Research Laboratories | Equipment for electrospinning |
| TWI315358B (en) * | 2007-04-20 | 2009-10-01 | Nat Applied Res Laboratories | Electrospinning equipment and the method thereon |
| FR2915115B1 (en) * | 2007-04-23 | 2010-09-10 | Sames Technologies | SPRAYING DEVICE, PROJECTION DEVICE COMPRISING SUCH AN ORGAN, PROJECTION PLANT AND METHOD OF CLEANING SUCH AN ORGAN |
| FR2915114B1 (en) * | 2007-04-23 | 2010-09-10 | Sames Technologies | SPRAYING DEVICE, PROJECTION DEVICE COMPRISING SUCH AN ORGAN, AND PROJECTION INSTALLATION COMPRISING SUCH A DEVICE |
| CN101720256B (en) * | 2007-05-24 | 2012-05-30 | 丰田自动车株式会社 | Rotary atomizing head, rotary atomizing painting device, and rotary atomizing painting method |
| US7799261B2 (en) * | 2007-11-30 | 2010-09-21 | Cook Incorporated | Needle-to-needle electrospinning |
| US8795577B2 (en) | 2007-11-30 | 2014-08-05 | Cook Medical Technologies Llc | Needle-to-needle electrospinning |
| US8104694B2 (en) * | 2008-02-05 | 2012-01-31 | Chih-Yuan Yang | Air spray gun |
| US8590817B2 (en) * | 2008-03-10 | 2013-11-26 | Illinois Tool Works Inc. | Sealed electrical source for air-powered electrostatic atomizing and dispensing device |
| US7988075B2 (en) | 2008-03-10 | 2011-08-02 | Illinois Tool Works Inc. | Circuit board configuration for air-powered electrostatically aided coating material atomizer |
| US8016213B2 (en) * | 2008-03-10 | 2011-09-13 | Illinois Tool Works Inc. | Controlling temperature in air-powered electrostatically aided coating material atomizer |
| US8496194B2 (en) | 2008-03-10 | 2013-07-30 | Finishing Brands Holdings Inc. | Method and apparatus for retaining highly torqued fittings in molded resin or polymer housing |
| US8770496B2 (en) * | 2008-03-10 | 2014-07-08 | Finishing Brands Holdings Inc. | Circuit for displaying the relative voltage at the output electrode of an electrostatically aided coating material atomizer |
| US7926748B2 (en) * | 2008-03-10 | 2011-04-19 | Illinois Tool Works Inc. | Generator for air-powered electrostatically aided coating dispensing device |
| USD608858S1 (en) | 2008-03-10 | 2010-01-26 | Illinois Tool Works Inc. | Coating material dispensing device |
| US7918409B2 (en) * | 2008-04-09 | 2011-04-05 | Illinois Tool Works Inc. | Multiple charging electrode |
| EP2305387B1 (en) * | 2008-06-16 | 2016-08-17 | Abb K.K. | Rotary atomizing head type coating device |
| JP5456281B2 (en) * | 2008-08-04 | 2014-03-26 | 旭サナック株式会社 | Rotating atomizing coating machine and coating method using rotating atomizing coating machine |
| CA2641508C (en) * | 2008-10-22 | 2016-07-12 | Honda Motor Co., Ltd. | Spray coating system and method |
| US8330167B2 (en) * | 2008-11-26 | 2012-12-11 | Furukawa Electric Co., Ltd | GaN-based field effect transistor and method of manufacturing the same |
| KR101012233B1 (en) * | 2009-04-27 | 2011-02-08 | 한국원자력연구원 | System and Apparatus for Separating Remaining Powder of Hull |
| US8225968B2 (en) | 2009-05-12 | 2012-07-24 | Illinois Tool Works Inc. | Seal system for gear pumps |
| FR2945461B1 (en) * | 2009-05-13 | 2012-10-05 | Sames Technologies | PROJECTOR AND SPRAYING DEVICE OF COATING PRODUCT AND PROJECTION METHOD COMPRISING SUCH A PROJECTOR |
| GB2469539B (en) * | 2009-09-21 | 2011-03-09 | Dau Binh Chiu | Rotary device and method for transmitting material |
| US8637109B2 (en) | 2009-12-03 | 2014-01-28 | Cook Medical Technologies Llc | Manufacturing methods for covering endoluminal prostheses |
| JP5653875B2 (en) * | 2011-09-28 | 2015-01-14 | 本田技研工業株式会社 | Painting equipment |
| US9175427B2 (en) | 2011-11-14 | 2015-11-03 | Cook Medical Technologies Llc | Electrospun patterned stent graft covering |
| CA2894865A1 (en) * | 2011-12-13 | 2013-06-20 | Genz Corp. | Recapture sprayer shell |
| US9314809B2 (en) | 2011-12-13 | 2016-04-19 | Richard Johnson | Recapture sprayer |
| JP5826662B2 (en) * | 2012-02-15 | 2015-12-02 | トヨタ自動車株式会社 | Rotary atomizing electrostatic coating machine |
| US10154918B2 (en) | 2012-12-28 | 2018-12-18 | Cook Medical Technologies Llc | Endoluminal prosthesis with fiber matrix |
| FR3009688B1 (en) * | 2013-08-13 | 2017-03-03 | Sames Tech | SPRAYER OF A LIQUID COATING PRODUCT AND SPRAY INSTALLATION COMPRISING SUCH A SPRAYER |
| JP6669537B2 (en) * | 2015-04-17 | 2020-03-18 | トヨタ車体株式会社 | Painting equipment and painting method |
| WO2016195044A1 (en) * | 2015-06-03 | 2016-12-08 | 本田技研工業株式会社 | Painting device |
| CA2991111A1 (en) * | 2015-06-30 | 2017-01-05 | Honda Motor Co., Ltd. | Painting method and device for same |
| US20180345300A1 (en) * | 2017-05-31 | 2018-12-06 | Nike, Inc. | Air Masking Nozzle |
| JP6809395B2 (en) * | 2017-06-27 | 2021-01-06 | トヨタ車体株式会社 | Rotary atomization coating equipment |
| CN114263479A (en) * | 2021-12-27 | 2022-04-01 | 中国建筑土木建设有限公司 | Device and method for controlling rebound rate of tunnel shotcrete |
| CN114751657A (en) * | 2022-05-26 | 2022-07-15 | 武汉市汉泓福玻璃有限公司 | Coated toughened glass and production process thereof |
| CN116900004B (en) * | 2023-09-12 | 2023-12-01 | 山西金秋铸造有限公司 | Cleaning and spraying integrated device and centrifugal cast tube pretreatment method |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1360743A (en) * | 1963-02-19 | 1964-05-15 | Sames Mach Electrostat | Improvements to spray guns and electrostatic spraying of paint |
| US4337895A (en) * | 1980-03-17 | 1982-07-06 | Thomas Gallen | High speed rotary atomizers |
| JPS58101751A (en) * | 1981-12-10 | 1983-06-17 | Nissan Motor Co Ltd | Rotary type electrostatic spray gun |
| JPS6174666A (en) | 1984-09-21 | 1986-04-16 | Mazda Motor Corp | Electrostatic painting device |
| US4776520A (en) * | 1987-05-11 | 1988-10-11 | Binks Manufacturing Company | Rotary atomizer |
| DE3718154A1 (en) * | 1987-05-29 | 1988-12-08 | Gema Ransburg Ag | SPRAY UNIT WITH A ROTATIONAL SPRAY ORGAN |
| JP2567072B2 (en) * | 1988-12-02 | 1996-12-25 | 株式会社豊田中央研究所 | Rotary atomizing coating device |
| US5078321A (en) * | 1990-06-22 | 1992-01-07 | Nordson Corporation | Rotary atomizer cup |
| JPH0456674A (en) | 1990-06-27 | 1992-02-24 | Hitachi Ltd | Vehicular air conditioner control method |
| JPH0889853A (en) * | 1994-07-29 | 1996-04-09 | Nissan Motor Co Ltd | Corona discharge method and electrostatic coating apparatus |
| JPH1071345A (en) | 1996-08-30 | 1998-03-17 | Honda Motor Co Ltd | Rotary atomization type coating apparatus |
| WO1998024554A1 (en) * | 1996-12-03 | 1998-06-11 | Abb Industry K.K. | Rotary spray head coater |
| US5803372A (en) * | 1997-04-03 | 1998-09-08 | Asahi Sunac Corporation | Hand held rotary atomizer spray gun |
| JP3529598B2 (en) * | 1997-08-25 | 2004-05-24 | 本田技研工業株式会社 | Rotary atomizing type coating equipment |
| US6189804B1 (en) * | 1998-03-27 | 2001-02-20 | Behr Systems, Inc. | Rotary atomizer for particulate paints |
| JP2001205143A (en) * | 2000-01-26 | 2001-07-31 | Ransburg Ind Kk | Electrostatic coating machine used as two type and method |
| FR2836638B1 (en) * | 2002-03-01 | 2004-12-10 | Sames Technologies | DEVICE FOR SPRAYING LIQUID COATING PRODUCTS |
| US6817553B2 (en) * | 2003-02-04 | 2004-11-16 | Efc Systems, Inc. | Powder paint spray coating apparatus having selectable, modular spray applicators |
-
2003
- 2003-09-10 JP JP2003318788A patent/JP4428973B2/en not_active Expired - Fee Related
-
2004
- 2004-09-07 CA CA002480615A patent/CA2480615C/en not_active Expired - Fee Related
- 2004-09-09 EP EP04021480A patent/EP1514605B1/en not_active Expired - Fee Related
- 2004-09-09 DE DE602004027693T patent/DE602004027693D1/en active Active
- 2004-09-10 CN CNB2004100899413A patent/CN1305583C/en not_active Expired - Fee Related
- 2004-09-10 US US10/937,385 patent/US7143963B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP4428973B2 (en) | 2010-03-10 |
| EP1514605A2 (en) | 2005-03-16 |
| EP1514605A3 (en) | 2007-12-26 |
| JP2005081304A (en) | 2005-03-31 |
| CA2480615A1 (en) | 2005-03-10 |
| DE602004027693D1 (en) | 2010-07-29 |
| US20050077384A1 (en) | 2005-04-14 |
| EP1514605B1 (en) | 2010-06-16 |
| CN1305583C (en) | 2007-03-21 |
| US7143963B2 (en) | 2006-12-05 |
| CN1597133A (en) | 2005-03-23 |
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