JPH1157592A - Electrostatic powder coating - Google Patents
Electrostatic powder coatingInfo
- Publication number
- JPH1157592A JPH1157592A JP23770597A JP23770597A JPH1157592A JP H1157592 A JPH1157592 A JP H1157592A JP 23770597 A JP23770597 A JP 23770597A JP 23770597 A JP23770597 A JP 23770597A JP H1157592 A JPH1157592 A JP H1157592A
- Authority
- JP
- Japan
- Prior art keywords
- work
- electrode
- powder
- charged
- powder coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Electrostatic Spraying Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粉体塗料その他の
微粉体を、静電粉体塗装の要領でワークにに静電付着す
る方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for electrostatically adhering a powder coating or other fine powder to a work in the manner of electrostatic powder coating.
【０００２】[0002]
【従来の技術】従来の技術に共通する基本的な考え方
は、電極からは可及的に強力な高圧静電気をアースされ
たワークに向かって放電し、電極とアースされたワーク
の間に強力な電界を生じさせ、電極からアースされたワ
ークに向かって強い電気力線を作り出し、上記した粉体
塗料、短繊維を上記した雰囲気の中で帯電させて、電極
からアースされたワークに向かう電気力線の方向に飛翔
させ、これによってアースされたワークに上記粉体塗
料、短繊維を付着すると言うものである。2. Description of the Related Art The basic idea common to the prior art is that an electrode discharges as strong a high-voltage static electricity as possible toward a grounded work, and a strong force is applied between the electrode and the grounded work. An electric field is generated to create strong lines of electric force from the electrodes to the grounded work, and the powder paint and the short fibers are charged in the above-described atmosphere to generate an electric force from the electrodes to the grounded work. It is said to fly in the direction of the line, whereby the powder coating and short fibers adhere to the grounded work.
【０００３】上記の考え方によるときは、原理的にはア
ースされたワークの表面が電極と均一の距離を保った平
面形状の物体であるときは、上記粉体塗料、短繊維を上
記物体の表面に均一に付着させるのにさほど支障はない
が、上記物体の表面が凹凸状の物体であるときは、電極
と上記物体の表面に距離の長短の差ができ、或は凸部に
電気力線が集中し、従って、電極側から上記物体に向か
って飛翔する帯電した上記粉体塗料、短繊維の飛翔距
離、飛翔時間の差ができ、或は凸部には凹部に対するよ
り電気力線が集中し、そのため上記粉体塗料、短繊維を
均一に付着することができないと言う不都合が生じるこ
とが応々にしてみうけられるということになると言うこ
とである。According to the above concept, when the surface of a grounded work is in principle a planar object keeping a uniform distance from the electrode, the powder paint and short fibers are applied to the surface of the object. This does not hinder the uniform adhesion to the surface, but when the surface of the object is uneven, the distance between the electrode and the surface of the object is different, or the lines of electric force are applied to the protrusions. Are concentrated, and therefore, the difference in the flying distance and the flying time of the charged powder coating material and the short fiber flying from the electrode side toward the object is generated, or the lines of electric force are more concentrated in the convex portions than in the concave portions. However, the disadvantage that the powder coating and the short fibers cannot be uniformly adhered to the powder coating is apt to be found.
【０００４】そこで、その飛翔力を補強或は調整するた
め、電極側からワーク側に向かうエアーの吹き付けを併
用する考え方がある。しかし、この手段によっても上記
不都合は解消されるにはいたっていない。[0004] In order to reinforce or adjust the flying force, there is a concept that air blowing from the electrode side to the work side is also used. However, even by this means, the above disadvantages have not been solved.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、電極に可及
的に強力な高圧静電気を印加すると言う従来の静電粉体
塗装技術、静電植毛技術の基本思想を改め、電極を通過
してワークに向かって飛翔する帯電した粉体塗料その他
の微粉体を電極側からワークに向かって引き込む気流に
乗せて所望の帯電量を充足した粉体塗料その他の微粉体
とし、これをそのままの状態を維持して電極とワークの
間に発生する電界内を比較的長い時間をかけて加工対象
物であるワークに向かって飛翔させ、帯電飽和量に達し
た上記粉体塗料の他の微粉体をワークの表面形状に関係
なく比較的低い電圧下で均一に上記粉体塗料等の微粉体
を塗着できるようにしようとするものである。SUMMARY OF THE INVENTION The present invention has been developed by modifying the basic concept of the conventional electrostatic powder coating technique and electrostatic flocking technique of applying the strongest high-voltage static electricity to the electrodes, The charged powder paint or other fine powder flying toward the work is placed on the air current drawn from the electrode side toward the work to form a powder paint or other fine powder that satisfies the desired charge amount. The electric field generated between the electrode and the workpiece is maintained for a relatively long time to fly toward the workpiece to be processed, and the other fine powder of the powder coating material having reached the charge saturation amount is discharged. An object of the present invention is to make it possible to uniformly apply the fine powder such as the powder coating under a relatively low voltage regardless of the surface shape of the work.
【０００６】[0006]
【課題を解決するための手段】本発明は、電極をはさん
で、該電極の一方側をアースされたワークが通過する通
過路とし、該電極の他方側を継続供給された粉体塗料そ
の他の微粉体を濃密状態で浮遊させる機構を備えた粉体
浮遊部とする静電粉体塗装装置の型式の装置のハウジン
グ内で、該粉体浮遊部に継続供給された上記粉体塗料そ
の他の微粉体の中、該電極近くで浮遊する上記粉体塗料
その他の微粉体を該電極と同極に帯電させる雰囲気を作
り出すと共に、該電極の近くで、該粉体浮遊部で浮遊す
る上記粉体塗料その他の微粉体を該電極を通過して該ワ
ーク通過路を通過するアースされたワークに向かって飛
翔させる引き込み気流を発生させ、この状況下で、該ワ
ーク通過路にアースされたワークを通過させ、該ワーク
が通過するときに発生する該電極と該ワークとの間の電
界内に該粉体浮遊部で濃密状態で浮遊する上記粉体塗料
その他の微粉体を該気流に乗せて該電極を通過させて帯
電させ、これを該気流に乗せてワークに向かって飛翔す
る間に所望の帯電容量を充足させ、この帯電状態を維持
したまま該ワーク通過路を通過する該ワークに向かって
該気流に乗って飛翔させ、これによって該ワークに該粉
体塗料その他の微粉体を付着させる静電粉体塗着法とし
て構成した。According to the present invention, one side of the electrode is formed as a passage through which a grounded work passes with the electrode interposed therebetween, and the other side of the electrode is continuously supplied with powder paint or the like. In a housing of a device of the type of an electrostatic powder coating device having a powder floating portion provided with a mechanism for floating fine powder in a dense state, the powder paint and other materials continuously supplied to the powder floating portion. In the fine powder, while creating an atmosphere in which the powder paint or other fine powder floating near the electrode is charged to the same polarity as the electrode, the powder floating in the powder floating portion near the electrode A drawing air current is generated that causes paint or other fine powder to fly toward the grounded work passing through the electrode and passing through the work passage, and in this situation, passes through the work grounded to the work passage. When the work passes The powder paint or other fine powder floating in the powder floating portion in a dense state in the electric field between the generated electrode and the workpiece is charged in the airflow by passing through the electrode and charged. A desired charging capacity is satisfied while flying toward the work in the airflow, and the airflow is flown toward the work passing through the work passage while maintaining the charged state, whereby the flying is performed. It was configured as an electrostatic powder coating method in which the powder coating and other fine powder were adhered to the work.
【０００７】[0007]
【発明の実施の形態】静電塗装装置の型式の装置のワー
クハウジング内のワーク通過路と対向して配される電極
の外側に、粉体塗料等の所望の微粉体を濃密状態で浮遊
する雰囲気を作り、上記状態で浮遊させた粉体塗料等の
微粉体を電極近くからワーク通過路に向かう引き込み気
流によって電極を通過させて帯電し、且つ、帯電させた
粉体塗料等の微粉体を電極からワークに向かった引き込
み気流にのせて、帯電した該粉体塗料等の微粉体を電極
とワークの間に生じる電界内に飛翔させ、電極からワー
クに達する飛翔時間を可及的に長くして帯電容量を実質
的に大にしてワークの面に付着させる。BEST MODE FOR CARRYING OUT THE INVENTION A desired fine powder such as a powder coating material is floated in a dense state outside an electrode arranged opposite to a work passage in a work housing of a type of electrostatic coating apparatus. An atmosphere is created, and the fine powder such as the powder paint suspended in the above state is charged by drawing airflow from the vicinity of the electrode toward the work passage, and charged, and the fine powder such as the charged powder paint is charged. By placing the charged fine powder such as powder paint in an electric field generated between the electrode and the work, the flying time from the electrode to the work is made as long as possible by applying the drawn airflow from the electrode to the work. To make the charging capacity substantially large and adhere to the surface of the work.
【０００８】[0008]
【実施例】本発明の実施例を図１に従って説明する。本
発明にかかる装置のハウジング１は静電塗装措置のハウ
ジングと同じように構成される。本発明を実施する装置
の型式にはいろいろな型式の装置があるが、基本構成は
静電粉体塗装装置とほぼ同じである。その概略の一例を
図１に示す。即ち、ハウジング１の底部には、上昇気流
発生装置２から送風される上昇気流を通過させ、且つ、
駆動装置３からの駆動力を伝達されて揺動或は振動その
他適宜の態様で粉体塗料等の所望の微粉体（以下粉体塗
料等と言う）をほぐす動きをする粉体塗料等の受け入れ
具４がハウジング１上部と仕切られて配される。An embodiment of the present invention will be described with reference to FIG. The housing 1 of the device according to the invention is constructed in the same way as the housing of the electrostatic painting procedure. Although there are various types of apparatuses for implementing the present invention, the basic configuration is almost the same as that of the electrostatic powder coating apparatus. An example of the outline is shown in FIG. That is, the updraft blown from the updraft generator 2 is passed through the bottom of the housing 1, and
Receiving a powder paint or the like that receives a driving force from the drive device 3 and moves to loosen a desired fine powder (hereinafter referred to as a powder paint or the like) such as a powder paint in a swinging or vibrating or other appropriate manner. The tool 4 is arranged so as to be separated from the upper portion of the housing 1.
【０００９】粉体塗料等の受け入れ具４の内側と、粉体
塗料等の受け入れ具４の上部の適宜個所にはハウジング
１の内壁側に片寄って上昇気流発生装置２からエアー供
給をうける粉体塗料等吹き上げ装置５ａ、５ｂ、５ｃが
配置されている。[0009] The powder which is supplied with air from the ascending airflow generating device 2 is biased toward the inner wall side of the housing 1 at an appropriate position inside the receiving member 4 for powder paint or the like, and at an appropriate position above the receiving member 4 for powder paint or the like. The paint blow-up devices 5a, 5b, and 5c are arranged.
【００１０】ハウジング１の天井６には排気口７が配置
されている。この排気口７は排気通路を以てハウジング
１外に配されたバックフィルター機構８に繋がれ、バッ
クフィルター機構８からはバックフィルター機構８で捕
集された粉体塗料等の微粉体をハウジング１の底部側に
逆送する逆送路９が繋がれている。An exhaust port 7 is arranged on the ceiling 6 of the housing 1. The exhaust port 7 is connected to a back filter mechanism 8 disposed outside the housing 1 through an exhaust passage. From the back filter mechanism 8, fine powder such as powder paint collected by the back filter mechanism 8 is transferred to the bottom of the housing 1. A reverse feed path 9 for reverse feed is connected to the side.
【００１１】更に、ハウジング１の天井６にはアースさ
れたワーク搬送路１０が配され、ハウジング１内には電
極１４と対向してワーク搬送路１０から懸垂具１１に懸
垂されたワークＢを移動する通過路１２が形成され、該
通過路１２を通過するワークＢを懸垂する懸垂具１１の
天井６の通路には、円線で囲んだとおり図２に図示した
ようなエアーカーテン形成装置１３が形成されており、
これによってハウジング１内に浮遊する粉体塗装のハウ
ジング１外に飛散するのを防止している。Further, a grounded work transfer path 10 is provided on the ceiling 6 of the housing 1, and the work B suspended from the work transfer path 10 by the hanging tool 11 is moved inside the housing 1 so as to face the electrode 14. A passage 12 is formed, and an air curtain forming device 13 as shown in FIG. 2 is enclosed in the passage of the ceiling 6 of the suspension tool 11 for suspending the work B passing through the passage 12. Is formed,
This prevents the powder coating floating in the housing 1 from scattering outside the housing 1.
【００１２】ハウジング１内には、ワークの通過路１２
に向かったエアー吹き出し口ａを設け、且つ極針ｂを設
けた電極１４が、ワークＢの通過路１２をはさんで対向
して配置される。該電極１４の構成の１例を円線で囲ん
だ図３に示す。A work passage 12 is provided in the housing 1.
The electrode 14 provided with the air outlet a and the pole needle b is disposed to face each other across the passage 12 of the work B. One example of the configuration of the electrode 14 is shown in FIG.
【００１３】上記のように構成された装置の粉体塗料等
の受け入れ具４に粉体塗料等Ａを充填する。The powder paint or the like A is filled in the receiving device 4 for the powder paint or the like of the apparatus configured as described above.
【００１４】この装置を稼働することにより、駆動装置
３からの駆動力を伝達されて粉体塗料等の受け入れ具４
が所定の動きをし、この動きに対して上昇気流発生装置
２（コンプレッサー）からエアーが粉体塗料等の受け入
れ具４の下側並びに粉体塗料等吹き上げ装置５ａ、５ｂ
に供給され、このエアーが粉体塗料等の受け入れ具４を
通過する。従って、粉体塗料等の受け入れ具４に充填さ
れた粉体塗料等Ａはハウジング１の上方に向かって吹き
上げられてハウジング１内に上昇気流によって上昇す
る。上昇した粉体塗料等Ａは、更に、ハウジング１内の
ハウジング内壁側に配されたエアー吹き上げ装置５ｃか
ら吹き出されるエアーによってハウジング１内壁と両電
極１４の外側の粉体浮遊部１５に電極間の内側のワーク
の通過路よりは濃密状態で吹き上げられて浮遊する。By operating this device, the driving force from the driving device 3 is transmitted to the receiving device 4 for receiving powder paint or the like.
Makes a predetermined movement, and in response to this movement, air is supplied from the updraft generator 2 (compressor) to the lower side of the receiving device 4 for powder paint and the like and the powder paint blow-up devices 5a and 5b.
, And the air passes through a receiving tool 4 such as a powder paint. Accordingly, the powder paint A filled in the receiving tool 4 such as the powder paint is blown up toward the upper part of the housing 1 and rises into the housing 1 by the ascending airflow. The raised powder coating material A is further transferred to the powder floating portion 15 on the inner wall of the housing 1 and the outside of the electrodes 14 by air blown from an air blowing device 5c disposed on the inner wall side of the housing in the housing 1. It is blown up and floats in a denser state than the passage of the work inside.
【００１５】ハウジング天井６の排気口７から排出され
た余剰粉体塗料等Ａがバックフィルター機構８を通って
クリーン処理されて逆送路９からハウジング１内に逆送
される。Excess powder paint A discharged from the exhaust port 7 of the housing ceiling 6 is subjected to clean processing through a back filter mechanism 8, and is sent back into the housing 1 through a backward feed path 9.
【００１６】電極１４には、静電高圧発生装置（図示し
ない）からの高圧静電気が送電される。この雰囲気の中
を、懸垂具１１に懸垂されたアース状態のワークＢを通
過させる。High voltage static electricity from an electrostatic high voltage generator (not shown) is transmitted to the electrode 14. In this atmosphere, the grounded work B suspended by the suspension tool 11 is passed.
【００１７】この装置の電極１４は図３に示すように、
ハウジング１の内壁に沿って静電高圧装置（図示しな
い）からケーブルＸで継がれた導電材Ｙが敷設され、該
導電材Ｙに抵抗器Ｚを介在して適宜個所にエアー吹き出
し口ａを設け、且つ、適宜個所にコロナピンｂを設けた
エアー供給管ｃから成るように構成されているから、エ
アー供給管ｃからはこの装置の稼働中は、通過路１２に
向けたエアーが対向して吹き出されている。このエアー
吹き出しは、ハウジング１内壁と電極１４の間のいわば
粉体塗料等Ａの粉体浮遊部１５に上昇気流によって上昇
しながら濃密状態で浮遊する粉体塗料等を電極１４から
ワークの通過路に向かった気流を生じる。この気流は電
極１４の外側からワークＢの通過路１２に向かって強風
を吹き付けて強力に粉体塗料を吹き込む働きをするので
なく、該粉体塗料等をワークＢの通過路１２に向かって
引き込む働きをする。The electrode 14 of this device is, as shown in FIG.
A conductive material Y connected by a cable X from an electrostatic high-voltage device (not shown) is laid along the inner wall of the housing 1, and an air blowing port a is provided at an appropriate position on the conductive material Y via a resistor Z. In addition, since the air supply pipe c is provided with a corona pin b at an appropriate position, air directed toward the passage 12 blows out from the air supply pipe c during operation of the apparatus. Have been. The air blows the powder paint or the like floating in a dense state while rising by the ascending airflow to the powder floating portion 15 of the powder paint A between the inner wall of the housing 1 and the electrode 14 so to speak. This produces an airflow directed toward. This air current does not blow strong powder from the outside of the electrode 14 toward the passage B of the work B to blow the powder paint strongly, but draws the powder paint and the like toward the passage B of the work B. Work.
【００１８】この装置の電極１４は、図３に示すように
構成さているから、上昇気流によってハウジング内壁と
電極１４の間のいわば粉体塗料等Ａの粉体浮遊部１５で
濃密状態で浮遊する粉体塗料等Ａの中が電極１４に接触
し、或は電極１４に近接して電極と同極に帯電し、電極
１４からハウジング１内壁側に離れようと飛翔する現象
を呈するものもあり、これを含めた浮遊する粉体塗料等
Ａを上記図３に示す電極１４を構成するエアー供給管ｃ
のエアー吹き出し口ａから吹き出すエアーで、その飛翔
をセーブして電極側１４に引き戻す作用の働きをしてワ
ーク側に引き戻して飛翔させる現象を呈することにな
る。Since the electrode 14 of this device is configured as shown in FIG. 3, the electrode 14 floats in a dense state in the powder floating portion 15 of the so-called powder coating material A between the inner wall of the housing and the electrode 14 due to ascending airflow. Some powder paints such as A come into contact with the electrode 14 or are charged to the same polarity as the electrode in the vicinity of the electrode 14 and fly away from the electrode 14 to the inner wall side of the housing 1. An air supply pipe c constituting the electrode 14 shown in FIG.
The air blown out from the air blowout port a serves to save the flight and return it to the electrode side 14 to cause a phenomenon of returning to the work side and flying.
【００１９】この発明の特徴は、ワーク通過路１２に対
向する電極１４のいわば外側である粉体塗料等Ａの粉体
浮遊部１５に、上昇気流に乗って粉体塗料等Ａを濃密状
態で浮遊させ、電極１４近くを浮遊する粉体塗料等Ａに
電極と同極に帯電する雰囲気を作り出し、その浮遊部か
ら上記のように濃密状態で浮遊する粉体塗料等Ａを上記
のように引き込み気流によって電極１４に対向するワー
ク通過路１２を通過するワークＢ側に引き込み、電極１
４を通過するとき更に帯電させ、これをワーク通過路１
２にワークＢを通過させる際に生じる電界内に向かって
飛翔させ、電極１４を通過して帯電した粉体塗料等Ａ電
極１４からワークＢに到達する飛翔時間を引き込み気流
を行うことにより可及的に長くすることにより、粉体塗
料等Ａを長い時間をかけて、いわば大容量の帯電量を充
足した粉体塗料等Ａとし、引き込み気流による飛翔によ
る飛翔力によって粉体塗料等Ａのワーク面に対する付着
効率を高めることができる。The feature of the present invention is that the powder paint A or the like is placed in a dense state on the powder floating portion 15 of the powder paint A or the like, which is outside the electrode 14 facing the workpiece passage 12, so as to ride on an ascending airflow. The powder paint A etc. which floats and floats near the electrode 14 creates an atmosphere which is charged to the same polarity as the electrode, and the powder paint A etc. which floats in a dense state as described above is drawn in from the floating portion as described above. The air current is drawn to the work B side passing through the work passageway 12 facing the electrode 14 and the electrode 1
4 is further charged when passing through the work passage 1
2 is made to fly toward the electric field generated when the work B is passed through the work 2, and the flying time of reaching the work B from the A electrode 14, such as a charged powder coating material passing through the electrode 14, is obtained by performing an airflow. By making the powder paint A etc. longer, the powder paint A etc., which satisfies a large amount of charge, is taken over a long period of time, and the work of the powder paint A etc. is performed by the flying force caused by the air current drawn in. The efficiency of attachment to the surface can be increased.
【００２０】上記説明は、図１に従っての説明である
が、図４に示すようにワークの通過路１２の両側に電極
１４を対向して設けワークＢが両電極１４の間を通過す
る過程で両電極１４から放電され、両電極１４とワーク
Ｂの間に電界が生じ、両電極１４から被塗装物Ｂに向か
った電気力線が生じる構成の装置を以て実施することも
できることは勿論、粉体塗料の供給手段は図示しないが
天井側から降下させる手段によってもよいことは勿論で
ある。The above description is based on FIG. 1. However, as shown in FIG. 4, electrodes 14 are provided on both sides of the passage 12 of the work so as to face each other. Of course, it is possible to use a device having a configuration in which electric discharge is generated from both electrodes 14, an electric field is generated between both electrodes 14 and work B, and lines of electric force are generated from both electrodes 14 toward workpiece B. Although the means for supplying the paint is not shown, it is needless to say that means for lowering the paint from the ceiling side may be used.
【００２１】本発明を完成する当たり、図５に示すとお
り、通常９０ｋｖの高圧静電気を印加した電極の下でア
ースされたワークＢに対して静電粉体塗装を行うときの
粉体塗料の帯電状態と、３０ｋｖの高圧静電気を印加し
た電極の下でアースされたワークＢに対して静電粉体塗
装を行った本発明の粉体塗料の帯電状態を比較した。そ
の結果粉体塗料の帯電量即ち付着力の実帯電量に達する
時間は、電極に９０ｋｖを印加したときの方が電極に３
０ｋｖを印加したときの方よりはるかに短いことがわか
った。To complete the present invention, as shown in FIG. 5, charging of the powder coating when electrostatic powder coating is performed on the work B grounded under an electrode to which high-voltage static electricity of 90 kv is normally applied. The state was compared with the charged state of the powder coating of the present invention in which the electrostatic powder coating was performed on the work B grounded under the electrode to which the high-voltage static electricity of 30 kv was applied. As a result, the charging time of the powder coating material, that is, the time to reach the actual charging amount of the adhesive force, is shorter when the electrode is applied with 90 kv.
It was found to be much shorter than when 0 kv was applied.
【００２２】しかし、塗膜形成状態を調べてみたところ
９０ｋｖの高圧静電気を電極に印加して静電塗装を行っ
たときは、３０ｋｖの高圧静電気を電極に印加したとき
よりも、電極とワークＢの間に強い電界を生じ、従っ
て、ワークＢの角部に強い電気力線が集中し図６
（Ａ），（Ｂ）に示すような塗膜Ａ１が形成されてしま
うことがわかった。However, when examining the state of coating film formation, it was found that when applying 90 kV high-voltage static electricity to the electrode and performing the electrostatic coating, the electrode and the work B were higher than when 30 kv high-voltage static electricity was applied to the electrode. 6, a strong electric field is concentrated at the corner of the work B,
It was found that a coating film A1 as shown in (A) and (B) was formed.
【００２３】これに対し、３０ｋｖの高圧静電気を電極
に印加して電極１４側からワークＢ側に引き込み気流を
生じさせ、その雰囲気下で静電塗装を行ったときは、９
０ｋｖの高圧静電気を電極に印加したような強い電気力
線が集中する現象は生ぜず図７（Ａ），（Ｂ）に示すよ
うな塗膜が形成されることがわかった。On the other hand, when a high-voltage static electricity of 30 kv is applied to the electrode to draw air from the electrode 14 side to the work B side and generate an air flow, and the electrostatic coating is performed in the atmosphere, 9
It was found that a phenomenon in which strong lines of electric force were concentrated such as when high-voltage static electricity of 0 kv was applied to the electrodes did not occur, and a coating film as shown in FIGS. 7A and 7B was formed.
【００２４】以上の理由から本件発明によれば、比較的
低い高圧静電気を電極に印加した条件下で、引き込み気
流によって長時間をかけて粉体塗料を電極１４からワー
クＢ側に飛翔させることにより、ワークの表面形状に影
響なく均一な塗装ができることが明らかになった。尚、
本発明を実施するに用いた粉体塗料の電気抵抗値は１０
13Ωｃｍであり、粉体塗料に限らず粉体塗料と同質の微
粉体をワークに付着させる技術にも適用できるものであ
ることは勿論である。For the above reasons, according to the present invention, under the condition that relatively low high-voltage static electricity is applied to the electrode, the powder paint is caused to fly from the electrode 14 to the work B by the drawn airflow over a long period of time. It was clarified that uniform coating could be performed without affecting the surface shape of the work. still,
The electric resistance value of the powder coating used for carrying out the present invention is 10
It is 13 Ωcm, and it is needless to say that the present invention can be applied not only to the powder coating but also to a technique of attaching fine powder of the same quality as the powder coating to the work.
【００２５】[0025]
【発明の効果】本発明は、上記したようにハウジング１
内にワークＢの通過路１２に対向して設けられる電極１
４の外側とハウジング１内壁の間の浮遊部１５に上昇気
流に乗って濃密状態で浮遊する粉体塗料等を、ワークＢ
の通過路１２を通過するワークＢに対して電極１４とワ
ークＢ間に生じる電界内の電気力線による飛翔力によら
ない飛翔状態を形成するものであるので、粉体塗料等の
吹き付けと異なり、電極１４を通過してワークＢに達す
る粉体塗料等の飛翔時間を長くし、これにより粉体塗料
等を帯電した状態で長時間をかけてワークに向かって飛
翔させることができると言うことであり、大型のワーク
Ｂに対しては勿論、凹凸のあるワークＢに対しても均一
な塗装ができ、それだけでなく上記のような手段で粉体
塗料等を飛翔させると言うことは低電圧下でも粉体塗料
等に帯電容量を大とする状態を作り出すことになり特に
電気抵抗の抵抗値の低いワークに粉体塗料等を塗着する
ことができると言う利点がある。According to the present invention, the housing 1 is provided as described above.
The electrode 1 provided inside the passage B of the work B so as to face the passage 12
A powder paint or the like floating in a dense state by an ascending airflow on the floating portion 15 between the outside of the
A flying state that does not depend on the flying force of the electric field lines generated in the electric field between the electrode 14 and the work B is formed on the work B passing through the passageway 12 of this embodiment. That is, the flying time of the powder paint or the like reaching the work B after passing through the electrode 14 is extended, so that the powder paint or the like can fly toward the work over a long time in a charged state. Therefore, not only large-sized work B but also uneven-worked work B can be uniformly coated, and not only that but also powder paint and the like can be caused to fly by the above-mentioned means is low voltage. Even underneath, a state in which the charge capacity is large is created in the powder coating or the like, and there is an advantage that the powder coating or the like can be applied to a work having a low electric resistance value.
【図１】静電粉体塗装装置の縦断面図である。FIG. 1 is a longitudinal sectional view of an electrostatic powder coating apparatus.
【図２】静電粉体塗装装置のハウジング内に配置する電
極の一部切欠断面図である。FIG. 2 is a partially cutaway sectional view of an electrode arranged in a housing of the electrostatic powder coating apparatus.
【図３】静電粉体塗装装置の天井部に配置するエアーカ
ーテン装置の概略図である。FIG. 3 is a schematic view of an air curtain device arranged on a ceiling of the electrostatic powder coating device.
【図４】他の実施例による静電粉体塗装装置の縦断面図
である。FIG. 4 is a longitudinal sectional view of an electrostatic powder coating apparatus according to another embodiment.
【図５】粉体塗料の実帯電量検討表である。FIG. 5 is a table for examining the actual charge amount of a powder coating.
【図６】強い高圧静電気を電極に印加して静電塗装を行
ったときのワークに形成される塗膜の状態の略図であ
る。FIG. 6 is a schematic diagram of a state of a coating film formed on a work when electrostatic painting is performed by applying strong high-voltage static electricity to an electrode.
【図７】弱い高圧静電気を電極に印加して電極側からワ
ーク側に引き込み気流を生じさせて静電塗装を行ったと
きのワークに形成される塗膜の状態の略図である。FIG. 7 is a schematic view of a state of a coating film formed on a work when electrostatic painting is performed by applying weak high-voltage static electricity to an electrode to draw air from the electrode side to the work side to generate an airflow;
１ ハウジング ２ 上昇気流発生装置 ３ 駆動装置 ４ 粉体塗料等の受け入れ具 ５ａ、５ｂ、５ｃ 粉体塗料吹き上げ装置 ６ 天井 ７ 排気口 ８ バックフィルター機構 ９ 逆送路 １０ ワーク搬送路 １１ 懸垂具 １２ 通過路 １３ エアーカーテン形成装置 １４ 電極 ａ エアー吹き出し口 ｂ コロナピン ｃ エアー供給管 ｄ 塗膜 １５ 浮遊部 Ａ 粉体塗料等 Ｂ ワーク REFERENCE SIGNS LIST 1 housing 2 updraft generator 3 drive 4 receiving device for powder paint 5a, 5b, 5c powder paint blow-up device 6 ceiling 7 exhaust port 8 back filter mechanism 9 reverse feed path 10 work transfer path 11 suspension tool 12 passing Road 13 Air curtain forming device 14 Electrode a Air outlet b Corona pin c Air supply pipe d Coating film 15 Floating part A Powder paint B work
フロントページの続き (72)発明者 阿部 正明 東京都中央区日本橋三丁目５番12号 株式 会社メサック内Continued on the front page (72) Inventor Masaaki Abe 3-5-12 Nihonbashi, Chuo-ku, Tokyo Inside Mesac Co., Ltd.
Claims (1)
スされたワークが通過する通過路とし、該電極の他方側
を継続供給された粉体塗料その他の微粉体を濃密状態で
浮遊させる機構を備えた粉体浮遊部とする静電粉体塗装
装置の型式の装置のハウジング内で、該粉体浮遊部に継
続供給された上記粉体塗料その他の微粉体の中、該電極
近くで浮遊する上記粉体塗料その他の微粉体を該電極と
同極に帯電させる雰囲気を作り出すと共に、該電極の近
くで、該粉体浮遊部で浮遊する上記粉体塗料その他の微
粉体を該電極を通過して該ワーク通過路を通過するアー
スされたワークに向かって飛翔させる引き込み気流を発
生させ、この状況下で、該ワーク通過路にアースされた
ワークを通過させ、該ワークが通過するときに発生する
該電極と該ワークとの間の電界内に該粉体浮遊部で濃密
状態で浮遊する上記粉体塗料その他の微粉体を該気流に
乗せて該電極を通過させて帯電させ、これを該気流に乗
せてワークに向かって飛翔する間に所望の帯電容量を充
足させ、この帯電状態を維持したまま該ワーク通過路を
通過する該ワークに向かって該気流に乗って飛翔させ、
これによって該ワークに該粉体塗料その他の微粉体を付
着させることを特徴とする静電粉体塗着法。1. An electrode is sandwiched between one side of the electrode as a passage through which a grounded work passes, and the other side of the electrode floats a continuously supplied powder paint or other fine powder in a dense state. In the housing of a device of the type of an electrostatic powder coating device, which is a powder floating portion provided with a mechanism for causing the powder floating portion, the powder paint or other fine powder continuously supplied to the powder floating portion, near the electrode In addition to creating an atmosphere in which the powder paint or other fine powder floating at the same polarity as the electrode is charged, and near the electrode, the powder paint or other fine powder floating at the powder floating portion is applied to the electrode. To generate a drawn airflow that flies toward a grounded work passing through the work passage, and in this situation, passes the grounded work through the work passage, and when the work passes The electrode and the workpiece generated at The powder paint or other fine powder floating in a dense state in the powder floating portion in the electric field between the electrodes is passed through the electrode and charged by the airflow, and is charged toward the workpiece by the airflow. Satisfying a desired charging capacity while flying, and flying in the airflow toward the work passing through the work passage while maintaining the charged state,
An electrostatic powder coating method wherein the powder coating or other fine powder is adhered to the work by this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23770597A JP3850960B2 (en) | 1997-08-19 | 1997-08-19 | Electrostatic powder coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23770597A JP3850960B2 (en) | 1997-08-19 | 1997-08-19 | Electrostatic powder coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1157592A true JPH1157592A (en) | 1999-03-02 |
| JP3850960B2 JP3850960B2 (en) | 2006-11-29 |
Family
ID=17019296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23770597A Expired - Lifetime JP3850960B2 (en) | 1997-08-19 | 1997-08-19 | Electrostatic powder coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3850960B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001099216A1 (en) * | 2000-06-22 | 2001-12-27 | Matsushita Electric Industrial Co., Ltd. | Polymer electrolyte fuel cell, method for manufacturing electrode thereof, and manufacturing apparatus |
| JP2012217965A (en) * | 2011-04-13 | 2012-11-12 | Nippon Steel Engineering Co Ltd | Electrostatic powder coating apparatus for metal plate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102670335B1 (en) * | 2022-05-25 | 2024-05-29 | 주식회사 제이비앤아이 | Apparatus for Supplying Powder Paint |
-
1997
- 1997-08-19 JP JP23770597A patent/JP3850960B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001099216A1 (en) * | 2000-06-22 | 2001-12-27 | Matsushita Electric Industrial Co., Ltd. | Polymer electrolyte fuel cell, method for manufacturing electrode thereof, and manufacturing apparatus |
| US7029785B2 (en) | 2000-06-22 | 2006-04-18 | Matsushita Electric Industrial Co., Ltd. | Polymer electrolyte fuel cells, methods of manufacturing electrodes therefor , and apparatuses for making the same |
| CN1310358C (en) * | 2000-06-22 | 2007-04-11 | 松下电器产业株式会社 | Polymer electrolyte fuel cell, and method for manufacturing electrode thereof, and manufacturing apparatus |
| US7544630B2 (en) | 2000-06-22 | 2009-06-09 | Panasonic Corporation | Methods of manufacturing electrodes for polymer electrolyte fuel cells |
| EP2124275A1 (en) | 2000-06-22 | 2009-11-25 | Panasonic Corporation | Apparatus for manufacturing electrode for polymer electrolyte fuel cell, and method of manufacturing the same |
| JP4944345B2 (en) * | 2000-06-22 | 2012-05-30 | パナソニック株式会社 | POLYMER ELECTROLYTE FUEL CELL, AND METHOD AND DEVICE FOR PRODUCING THE ELECTRODE |
| JP2012217965A (en) * | 2011-04-13 | 2012-11-12 | Nippon Steel Engineering Co Ltd | Electrostatic powder coating apparatus for metal plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3850960B2 (en) | 2006-11-29 |
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