JPH0947692A - Rotary spray type electrostatic coating apparatus - Google Patents
Rotary spray type electrostatic coating apparatusInfo
- Publication number
- JPH0947692A JPH0947692A JP20248095A JP20248095A JPH0947692A JP H0947692 A JPH0947692 A JP H0947692A JP 20248095 A JP20248095 A JP 20248095A JP 20248095 A JP20248095 A JP 20248095A JP H0947692 A JPH0947692 A JP H0947692A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- spraying head
- electrostatic coating
- paint
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1064—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 the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば、自動車製
造工程における車体塗装に用いられる回転霧化静電塗装
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary atomizing electrostatic coating apparatus used for, for example, coating a vehicle body in an automobile manufacturing process.
【０００２】[0002]
【従来の技術】図３は、従来における回転霧化静電塗装
装置の一例を示す図であって、図に示す回転霧化静電塗
装装置１００は、回転軸１０１に固定されたカップ状の
噴霧頭１０２と、回転軸１０１と図外の被塗装物との間
に高電圧を印加する高電圧発生装置１０３と、高速で回
転する噴霧頭１０２内に塗料を供給する塗料供給ノズル
１０４を備えている。2. Description of the Related Art FIG. 3 is a diagram showing an example of a conventional rotary atomizing electrostatic coating apparatus. The rotary atomizing electrostatic coating apparatus 100 shown in the figure is a cup-shaped member fixed to a rotary shaft 101. A spray head 102, a high voltage generator 103 for applying a high voltage between the rotating shaft 101 and an object to be coated (not shown), and a paint supply nozzle 104 for supplying paint into the spray head 102 rotating at high speed. ing.
【０００３】噴霧頭１０２は、例えばアルミニウム合金
製である。また、回転軸１０１と高電圧発生装置１０３
との間には、保護抵抗１０５が設けてある。The spray head 102 is made of, for example, an aluminum alloy. Further, the rotary shaft 101 and the high voltage generator 103
A protective resistor 105 is provided between the and.
【０００４】高速で回転する噴霧頭１０２の環状空間１
０２ａ内に供給された塗料供給ノズル１０４から塗料
は、噴霧頭１０２の内周面１０２ｂの底部に設けた多数
の塗料流出孔１０２ｃを通り、内周面１０２ｂに沿って
流出し、遠心力によって噴霧頭１０２の先端部１０２ｄ
に達し、同先端部１０２ｄから負の電荷を帯びた塗料粒
子となって、高電圧発生装置１０３の高電圧の正側（例
えば０Ｖ側）を印加した被塗装物に向けて放出されるこ
ととなる。The annular space 1 of the spray head 102 rotating at high speed
The paint is supplied from the paint supply nozzle 104 supplied to the inside 02a through a large number of paint outflow holes 102c provided at the bottom of the inner peripheral surface 102b of the spray head 102, flows out along the inner peripheral surface 102b, and is sprayed by centrifugal force. Tip 102d of head 102
And reaches the end portion 102d to become negatively charged paint particles, which are discharged toward the object to which the high voltage positive side (for example, 0V side) of the high voltage generator 103 is applied. Become.
【０００５】このような回転霧化静電塗装装置として
は、例えば、特開昭６３−２２９１６３号公報に記載さ
れたものがある。An example of such a rotary atomizing electrostatic coating device is described in Japanese Patent Application Laid-Open No. 63-229163.
【０００６】[0006]
【発明が解決しようとする課題】ところが、上記したよ
うな従来の回転霧化静電塗装装置にあっては、アルミニ
ウム合金等の金属製の噴霧頭１０２を用いていたため、
保護抵抗１０５よりも先端側（噴霧頭側）の帯電容量が
多くなると共に、スパークが生じる恐れがあり、その際
のエネルギーが大きいので噴霧頭１０２から被塗装物ま
での距離を小さくすることが難しく、また、とくに水系
塗料などのように低抵抗性の塗料を用いる場合、塗料を
介して電荷がリークすることがあるという問題があり、
これらの問題を解決することが課題であった。However, in the conventional rotary atomizing electrostatic coating apparatus as described above, since the spray head 102 made of metal such as aluminum alloy is used,
The tip end side (spray head side) has a larger charging capacity than the protective resistor 105, and there is a risk of sparking. Since energy at that time is large, it is difficult to reduce the distance from the spray head 102 to the object to be coated. In addition, there is a problem that electric charge may leak through the paint, especially when a low-resistance paint such as water-based paint is used.
The problem was to solve these problems.
【０００７】[0007]
【発明の目的】本発明は、上記従来の課題に着目して成
されたもので、噴霧頭における帯電容量の増大によるス
パークを防止することができると共に、低抵抗性の塗料
を使用する際における電荷のリークを防止することがで
きる回転霧化静電塗装装置を提供することを目的として
いる。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and is capable of preventing sparks due to an increase in charge capacity of a spray head and at the time of using a low resistance paint. An object of the present invention is to provide a rotary atomizing electrostatic coating device capable of preventing charge leakage.
【０００８】[0008]
【課題を解決するための手段】本発明に係わる回転霧化
静電塗装装置は、請求項１として、回転する噴霧頭を備
えた回転霧化静電塗装装置において、噴霧頭のカップ状
を成す本体部分が樹脂で成形してある構成とし、請求項
２として、噴霧頭が、樹脂製の本体部分の背面に電極を
備えている構成とし、請求項３として、電極が、半抵抗
体から成る構成とし、請求項４として、噴霧頭の内面
が、塗料粒子の飛行軌跡とイオンエアの流線とを略一致
させる形状である構成としており、上記の構成を課題を
解決するための手段としている。According to a first aspect of the present invention, there is provided a rotary atomizing electrostatic coating device having a rotating spraying head, wherein the spraying head is cup-shaped. The main body is made of resin, the spray head has an electrode on the back surface of the resin main body, and the electrode is a half-resistor. According to a fourth aspect of the present invention, the inner surface of the spray head has a shape that substantially matches the flight path of the paint particles and the streamline of the ion air, and the above-described structure is a means for solving the problems.
【０００９】[0009]
【発明の作用】本発明の請求項１に係わる回転霧化静電
塗装装置では、噴霧頭のカップ状を成す本体部分を樹脂
製としたことにより、噴霧頭における帯電容量を少なく
して、スパークの発生を防止することとなり、請求項２
に係わる回転霧化静電塗装装置のように噴霧頭の背面に
電極を備え、また、請求項３に係わる回転霧化静電塗装
装置のように半抵抗体から成る電極とすることにより、
塗料と電極とが接触しないようにし、とくに低抵抗性の
塗料を使用する際の電荷のリークを防止すると共に、電
極自体が保護抵抗として働くこととなる。In the rotary atomizing electrostatic coating apparatus according to the first aspect of the present invention, the cup-shaped main body portion of the spray head is made of resin, so that the charging capacity in the spray head is reduced and the spark is reduced. This will prevent the occurrence of
An electrode is provided on the back surface of the spraying head as in the rotary atomizing electrostatic coating device according to claim 1, and an electrode made of a half-resistor is provided as in the rotary atomizing electrostatic coating device according to claim 3.
The paint and the electrode are prevented from coming into contact with each other, and the leakage of electric charge is prevented especially when a low resistance paint is used, and the electrode itself functions as a protective resistance.
【００１０】本発明の請求項４に係わる回転霧化静電塗
装装置では、塗料粒子の飛行軌跡とイオンエアの流線と
を略一致させる噴霧頭の内面形状とすることにより、塗
料粒子の帯電量を増大させる。In the rotary atomizing electrostatic coating device according to the fourth aspect of the present invention, the charge amount of the paint particles is set by forming the inner surface shape of the spray head so that the flight trajectory of the paint particles and the streamline of the ion air are substantially matched. Increase.
【００１１】[0011]
【実施例】以下、図面に基づいて、本発明に係わる回転
霧化静電塗装装置の一実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rotary atomizing electrostatic coating apparatus according to the present invention will be described below with reference to the drawings.
【００１２】図１に示す回転霧化静電塗装装置は、エア
モータを駆動源とする中空状の回転軸１と、この回転軸
１の先端部に固定された噴霧頭２と、回転軸１と図外の
被塗装物との間に高電圧を印加する高電圧発生装置３
と、高速で回転する噴霧頭２内に塗料を供給する塗料供
給管４を備えている。The rotary atomizing electrostatic coating apparatus shown in FIG. 1 has a hollow rotary shaft 1 driven by an air motor, a spray head 2 fixed to the tip of the rotary shaft 1, and a rotary shaft 1. High voltage generator 3 for applying a high voltage to an object to be coated (not shown)
Further, there is provided a paint supply pipe 4 for supplying paint into the spray head 2 rotating at high speed.
【００１３】回転軸１と高電圧発生装置３との間には保
護抵抗５が設けてある。また、塗料供給管４は、回転軸
１内に同軸位置で且つ非回転状態に挿設してあり、噴霧
頭２内に塗料を供給し得るように回転軸１の先端部から
吐出端部を突出させた状態に設けてある。A protective resistor 5 is provided between the rotary shaft 1 and the high voltage generator 3. Further, the paint supply pipe 4 is inserted into the rotary shaft 1 at a coaxial position and in a non-rotating state, and the paint supply pipe 4 is provided with a discharge end portion from the tip end of the rotary shaft 1 so that the paint can be supplied into the spray head 2. It is provided in a protruding state.
【００１４】噴霧頭２は、カップ状を成す本体部分２ａ
が合成樹脂製であって、その背面側のほぼ全体に半抵抗
体から成る電極２ｂが設けてあり、この電極２ｂに回転
軸１の先端部が接触する状態にして同回転軸１と連結し
てある。The spray head 2 has a cup-shaped main body portion 2a.
Is made of a synthetic resin, and an electrode 2b made of a half-resistor is provided on almost the entire rear surface thereof. The tip of the rotary shaft 1 is brought into contact with the electrode 2b and is connected to the rotary shaft 1. There is.
【００１５】また、噴霧頭２は、本体部分２ａの中央に
隔壁部２ｃを有し、隔壁部２ｃの背面側（図１右側）に
塗料の供給室２ｄが形成してあると共に、同隔壁部２ｃ
の外周部分には、円周方向に一定の間隔で複数の塗料流
出孔２ｅが形成してある。Further, the spray head 2 has a partition wall portion 2c at the center of the main body portion 2a, a paint supply chamber 2d is formed on the back surface side (right side in FIG. 1) of the partition wall portion 2c, and the partition wall portion is formed. 2c
A plurality of paint outflow holes 2e are formed in the outer peripheral portion of the base material at regular intervals in the circumferential direction.
【００１６】さらに、噴霧頭２は、その内周面２ｈが、
中心から外側に向けて、後記する静電塗装の際の塗料粒
子の飛行軌跡と、電極２ｄの先端部２ｆから発生するイ
オンエアの流線とを略一致させる形状になっている。Further, the inner peripheral surface 2h of the spray head 2 is
From the center toward the outside, the flight path of the paint particles during electrostatic coating, which will be described later, and the streamline of ion air generated from the tip 2f of the electrode 2d are made to substantially coincide with each other.
【００１７】電極２ｂは、その先端部２ｆが、本体部分
２ａにおける先端部２ｇよりもやや後方に位置してお
り、通常被塗装物に対して−３０〜−９０ｋＶ程度の負
の高電圧に維持される。このとき、半抵抗体から成る上
記電極２ｂの抵抗値は約１０ＭΩである。The tip portion 2f of the electrode 2b is located slightly rearward of the tip portion 2g of the body portion 2a, and is normally maintained at a negative high voltage of about -30 to -90 kV with respect to the object to be coated. To be done. At this time, the resistance value of the electrode 2b made of a half-resistor is about 10 MΩ.
【００１８】なお、図示は省略したが、噴霧頭２の外周
側には、被塗装物に向かってシェーピングエアを吐出す
る環状のエアシリンダが設けられ、このエアシリンダか
らのシェーピングエアで形成された空気層によって塗料
粒子の放出方向を規制し、噴霧パターンを形成する。Although not shown, an annular air cylinder for discharging shaping air toward the object to be coated is provided on the outer peripheral side of the spray head 2 and is formed by the shaping air from this air cylinder. The air layer regulates the discharge direction of the paint particles and forms a spray pattern.
【００１９】上記構成を備えた回転霧化静電塗装装置に
おいて、高速で回転する噴霧頭２の供給室２ｄ内に塗料
供給管４から供給された塗料は、噴霧頭２の塗料流出孔
２ｅを通り、内周面２ｈに沿って流出し、遠心力によっ
て噴霧頭２の先端部２ｇに達し、同先端部２ｇから負の
電荷を帯びた塗料粒子となって、高電圧発生装置３の高
電圧の正側（例えば０Ｖ側）を印加した被塗装物に向け
て放出され、同被塗装物に吸引付着することとなる。In the rotary atomizing electrostatic coating apparatus having the above structure, the paint supplied from the paint supply pipe 4 into the supply chamber 2d of the spray head 2 rotating at a high speed flows through the paint outflow hole 2e of the spray head 2. As a result, it flows out along the inner peripheral surface 2h, reaches the tip portion 2g of the spray head 2 by centrifugal force, becomes negatively charged paint particles from the tip portion 2g, and becomes a high voltage of the high voltage generator 3. The positive side (for example, 0 V side) is discharged toward the object to be coated, and is sucked and adhered to the object to be coated.
【００２０】このとき、当該回転霧化静電塗装装置で
は、噴霧頭２のカップ状を成す本体部分２ａが樹脂製で
あるので、噴霧頭２における帯電容量が少なくなり、ス
パークが発生することがなく、また、噴霧頭２の背面に
半抵抗体から成る電極２ｂを備えているので、電極２ｂ
自体が保護抵抗として機能することになり、電気系統が
保護されると共に、電極２ｂの先端部２ｆが本体部分２
ａの先端部２ｇよりも後方に位置しているので、塗料と
電極２ｂとが接触することがなく、とくに水系塗料等の
低抵抗性の塗料を使用する際に電荷のリークが生じるこ
とがない。At this time, in the rotary atomizing electrostatic coating apparatus, since the cup-shaped main body portion 2a of the spray head 2 is made of resin, the charge capacity of the spray head 2 is reduced and sparks may occur. Moreover, since the electrode 2b made of a half-resistor is provided on the back surface of the spray head 2, the electrode 2b
As a result, the electric system is protected by itself functioning as a protective resistance, and the tip portion 2f of the electrode 2b is protected by the main body portion 2.
Since it is located rearward of the tip portion 2g of a, the paint and the electrode 2b do not come into contact with each other, and charge leakage does not occur particularly when a low-resistance paint such as an aqueous paint is used. .
【００２１】さらに、当該回転霧化静電塗装装置では、
噴霧頭２の内面が、図１中に示す如く、噴霧パターンの
外周部分を形成する塗料粒子の飛行軌跡Ｆ１と、電極２
ｄの先端部２ｆから発生するイオンエアの流線Ｆ２とを
略一致させる形状になっているので、塗料粒子への帯電
が効率よく行われ、これにより塗料粒子の帯電量が増大
することとなって、塗着効率がさらに向上することにな
る。Further, in the rotary atomizing electrostatic coating device,
As shown in FIG. 1, the inner surface of the spray head 2 has a trajectory F1 of the paint particles forming the outer peripheral portion of the spray pattern and the electrode 2
Since the shape is such that the flow line F2 of the ion air generated from the tip portion 2f of d is made to substantially coincide with each other, the paint particles are efficiently charged, thereby increasing the charge amount of the paint particles. The coating efficiency will be further improved.
【００２２】そのほか、図２に示すように、電極２ｂの
先端部２ｆを本体部分２ａにおける先端部２ｇよりもさ
らに後方に位置させることによって、塗料と電極２ｂと
がより一層接触しがたい構造とすれば、例えば水系塗料
を用いる場合などでは好ましいこともある。In addition, as shown in FIG. 2, by arranging the tip 2f of the electrode 2b further rearward than the tip 2g of the main body portion 2a, it is possible to make the paint and the electrode 2b more difficult to contact. This may be preferable, for example, when an aqueous paint is used.
【００２３】[0023]
【発明の効果】以上説明してきたように、本発明の請求
項１に係わる回転霧化静電塗装装置によれば、噴霧頭の
カップ状を成す本体部分に樹脂を採用したことから、噴
霧頭における帯電容量を小さくすることができ、これに
より、スパークの発生を防止することができ、さらに
は、スパークの発生がないので噴霧頭と被塗装物との距
離を小さくすることが可能になり、塗着効率の向上など
にも貢献し得る。また、塗料と電極とを非接触状態にす
ることが可能になり、とくに、水系塗料等の低抵抗性の
塗料を使用する際に、塗料を介した電荷のリークの発生
防止を実現することができる。As described above, according to the rotary atomizing electrostatic coating apparatus according to the first aspect of the present invention, since the resin is used for the cup-shaped body portion of the spray head, the spray head is used. It is possible to reduce the charge capacity in the ,, thereby, it is possible to prevent the occurrence of sparks, further, since there is no occurrence of sparks, it is possible to reduce the distance between the spray head and the object to be coated, It can also contribute to improving the coating efficiency. In addition, it is possible to bring the paint and the electrode into non-contact with each other, and it is possible to prevent the occurrence of charge leakage through the paint, especially when using a low-resistance paint such as an aqueous paint. it can.
【００２４】本発明の請求項２に係わる回転霧化静電塗
装装置によれば、噴霧頭の背面に電極を備えているの
で、塗料と電極とを非接触状態にすることができ、とく
に、水系塗料等の低抵抗性の塗料を使用する際に、塗料
を介した電荷のリークの発生を確実に防止することがで
き、また、本発明の請求項３に係わる回転霧化静電塗装
装置によれば、半抵抗体から成る電極を採用したことか
ら、電極自体を保護抵抗として働かせることができ、電
気系統を保護して装置の良好な機能を常に維持すること
ができる。According to the rotary atomizing electrostatic coating apparatus of the second aspect of the present invention, since the electrode is provided on the back surface of the spray head, the paint and the electrode can be brought into a non-contact state. When a low-resistance paint such as a water-based paint is used, it is possible to reliably prevent the generation of electric charge leak through the paint, and the rotary atomizing electrostatic coating device according to claim 3 of the present invention. According to the above, since the electrode composed of the half-resistor is adopted, the electrode itself can act as a protective resistance, and the electric system can be protected and the good function of the device can be always maintained.
【００２５】本発明の請求項４に係わる回転霧化静電塗
装装置によれば、塗料粒子の飛行軌跡とイオンエアの流
線とを略一致させるように噴霧頭の内面を形成したの
で、塗料粒子への帯電が効率良く行われるようになり、
塗料粒子の帯電量を増大させることができ、これによっ
て塗着効率をより一層高めることができる。According to the rotary atomizing electrostatic coating apparatus of the fourth aspect of the present invention, since the inner surface of the spray head is formed so that the flight trajectory of the paint particles and the streamline of the ion air are substantially aligned, the paint particles are formed. Is efficiently charged,
The charge amount of the paint particles can be increased, which can further increase the coating efficiency.
【図１】本発明に係わる回転霧化静電塗装装置の一実施
例を説明する断面図である。FIG. 1 is a sectional view illustrating an embodiment of a rotary atomizing electrostatic coating device according to the present invention.
【図２】噴霧頭先端部の他の構造例を説明する断面図で
ある。FIG. 2 is a cross-sectional view illustrating another example of the structure of the tip of the spray head.
【図３】従来における回転霧化静電塗装装置を説明する
断面図である。FIG. 3 is a sectional view illustrating a conventional rotary atomizing electrostatic coating device.
２ 噴霧頭 ２ａ （噴霧頭の）本体部分 ２ｂ （噴霧頭の）電極 ２ｈ （噴霧頭の）内面 2 Spray head 2a (spray head) body portion 2b (spray head) electrode 2h (spray head) inner surface
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【手続補正書】[Procedure amendment]
【提出日】平成８年７月９日[Submission date] July 9, 1996
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】[0008]
【課題を解決するための手段】本発明に係わる回転霧化
静電塗装装置は、請求項１として、回転する噴霧頭を備
えた回転霧化静電塗装装置において、噴霧頭のカップ状
を成す本体部分が樹脂で成形してある構成とし、請求項
２として、噴霧頭が、樹脂製の本体部分の背面に電極を
備えている構成とし、請求項３として、電極の先端部
が、本体部分の先端部よりも後方に位置している構成と
し、請求項４として、電極が、半抵抗体から成る構成と
し、請求項５として、噴霧頭の内面が、塗料粒子の飛行
軌跡とイオンエアの流線とを略一致させる形状である構
成としており、上記の構成を課題を解決するための手段
としている。According to a first aspect of the present invention, there is provided a rotary atomizing electrostatic coating device having a rotating spraying head, wherein the spraying head is cup-shaped. The main body part is made of resin, the spray head is provided with an electrode on the back surface of the resin main body part, and the tip part of the electrode is the main body part. The electrode is made of a half-resistor, and the inner surface of the spray head has a flight path of paint particles and a flow of ion air. The configuration is such that the lines substantially coincide with each other, and the above configuration serves as a means for solving the problem.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００９】[0009]
【発明の作用】本発明の請求項１に係わる回転霧化静電
塗装装置では、噴霧頭のカップ状を成す本体部分を樹脂
製としたことにより、噴霧頭における帯電容量を少なく
して、スパークの発生を防止することとなり、請求項２
に係わる回転霧化静電塗装装置のように噴霧頭の背面に
電極を備え、また、請求項３に係わる回転霧化静電塗装
装置のように電極の先端部を本体部分の先端部よりも後
方に位置させることにより、塗料と電極とが接触しない
ようにし、とくに低抵抗性の塗料を使用する際の電荷の
リークを防止する。さらに、請求項４に係わる回転霧化
静電塗装装置のように半抵抗体から成る電極とすること
により、電極自体が保護抵抗として働くこととなる。In the rotary atomizing electrostatic coating apparatus according to the first aspect of the present invention, since the cup-shaped main body portion of the spray head is made of resin, the charge capacity in the spray head is reduced and the spark is reduced. This will prevent the occurrence of
An electrode is provided on the back surface of the spraying head as in the rotary atomizing electrostatic coating device according to claim 3, and the tip end of the electrode is more than the tip portion of the main body portion as in the rotary atomizing electrostatic coating device according to claim 3. The rearward position prevents the paint from coming into contact with the electrodes, and prevents the leakage of electric charges, especially when using a low-resistance paint. Furthermore, by using an electrode composed of a half-resistor as in the rotary atomizing electrostatic coating device according to the fourth aspect, the electrode itself functions as a protective resistance.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１０】本発明の請求項５に係わる回転霧化静電塗
装装置では、塗料粒子の飛行軌跡とイオンエアの流線と
を略一致させる噴霧頭の内面形状とすることにより、塗
料粒子の帯電量を増大させる。In the rotary atomizing electrostatic coating apparatus according to the fifth aspect of the present invention, the charge amount of the paint particles is set by forming the inner surface shape of the spray head so that the flight trajectory of the paint particles and the streamline of the ion air are substantially coincident with each other. Increase.
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２４[Name of item to be corrected] 0024
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２４】本発明の請求項２に係わる回転霧化静電塗
装装置によれば、噴霧頭の背面に電極を備えているの
で、塗料と電極とを非接触状態にすることができ、とく
に、水系塗料等の低抵抗性の塗料を使用する際に、塗料
を介した電荷のリークの発生を確実に防止することがで
きる。また、本発明の請求項３に係わる回転霧化静電塗
装装置によれば、電極の先端部を本体部分の先端部より
も後方に位置させていることから、噴霧頭先端部におけ
る塗料と電極との接触をより確実に防止することがで
き、塗料を介した電荷のリークの発生を完全に防ぐこと
ができる。さらに、本発明の請求項４に係わる回転霧化
静電塗装装置によれば、半抵抗体から成る電極を採用し
たことから、電極自体を保護抵抗として働かせることが
でき、電気系統を保護して装置の良好な機能を常に維持
することができる。According to the rotary atomizing electrostatic coating apparatus of the second aspect of the present invention, since the electrode is provided on the back surface of the spray head, the paint and the electrode can be brought into a non-contact state. When a low resistance paint such as a water-based paint is used, it is possible to reliably prevent the occurrence of electric charge leak through the paint. Further, according to the rotary atomizing electrostatic coating apparatus of the third aspect of the present invention, since the tip of the electrode is located rearward of the tip of the main body, the paint and the electrode at the tip of the spray head are located. It is possible to more reliably prevent contact with the liquid, and it is possible to completely prevent the occurrence of electric charge leakage through the paint. Further, according to the rotary atomizing electrostatic coating device of the fourth aspect of the present invention, since the electrode composed of the half-resistor is adopted, the electrode itself can act as a protective resistance and protect the electric system. The good functioning of the device can always be maintained.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２５[Name of item to be corrected] 0025
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２５】本発明の請求項５に係わる回転霧化静電塗
装装置によれば、塗料粒子の飛行軌跡とイオンエアの流
線とを略一致させるように噴霧頭の内面を形成したの
で、塗料粒子への帯電が効率良く行われるようになり、
塗料粒子の帯電量を増大させることができ、これによっ
て塗着効率をより一層高めることができる。According to the rotary atomizing electrostatic coating apparatus of the fifth aspect of the present invention, since the inner surface of the spray head is formed so that the flight path of the paint particles and the streamline of the ion air are substantially coincident with each other, the paint particles are formed. Is efficiently charged,
The charge amount of the paint particles can be increased, which can further increase the coating efficiency.
【手続補正７】[Procedure amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】符号の説明[Correction target item name] Explanation of sign
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【符号の説明】 ２ 噴霧頭 ２ａ （噴霧頭の）本体部分 ２ｂ （噴霧頭の）電極 ２ｆ 電極の先端部 ２ｇ 本体部分の先端部 ２ｈ （噴霧頭の）内面[Explanation of reference symbols] 2 Spray head 2a (spray head) main body portion 2b (spray head) electrode 2f Electrode tip 2g Body tip 2h (spray head) inner surface
Claims (4)
装装置において、噴霧頭のカップ状を成す本体部分が樹
脂で成形してあることを特徴とする回転霧化静電塗装装
置。1. A rotary atomizing electrostatic coating device having a rotating spraying head, wherein a cup-shaped main body portion of the spraying head is made of resin.
極を備えていることを特徴とする請求項１に記載の回転
霧化静電塗装装置。2. The rotary atomizing electrostatic coating device according to claim 1, wherein the spray head is provided with an electrode on the back surface of the main body made of resin.
する請求項２に記載の回転霧化静電塗装装置。3. The rotary atomizing electrostatic coating device according to claim 2, wherein the electrode is composed of a half-resistor.
イオンエアの流線とを略一致させる形状であること特徴
とする請求項１〜３のいずれかに記載の回転霧化静電塗
装装置4. The rotary atomizing electrostatic coating according to claim 1, wherein the inner surface of the spraying head has a shape in which the flight trajectory of paint particles and the streamline of ion air are substantially aligned with each other. apparatus
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20248095A JP3405493B2 (en) | 1995-08-08 | 1995-08-08 | Rotary atomizing electrostatic coating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20248095A JP3405493B2 (en) | 1995-08-08 | 1995-08-08 | Rotary atomizing electrostatic coating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0947692A true JPH0947692A (en) | 1997-02-18 |
| JP3405493B2 JP3405493B2 (en) | 2003-05-12 |
Family
ID=16458217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20248095A Expired - Fee Related JP3405493B2 (en) | 1995-08-08 | 1995-08-08 | Rotary atomizing electrostatic coating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3405493B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010535608A (en) * | 2007-07-03 | 2010-11-25 | イリノイ トゥール ワークス インコーポレイティド | Spraying device having a parabolic flow surface |
| FR3004661A1 (en) * | 2013-04-22 | 2014-10-24 | Sames Technologies | LIQUID COATING PRODUCT ELECTROSTATIC PROJECTOR AND PROJECTION INSTALLATION COMPRISING SUCH A PROJECTOR |
-
1995
- 1995-08-08 JP JP20248095A patent/JP3405493B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010535608A (en) * | 2007-07-03 | 2010-11-25 | イリノイ トゥール ワークス インコーポレイティド | Spraying device having a parabolic flow surface |
| TWI473658B (en) * | 2007-07-03 | 2015-02-21 | Finishing Brands Holdings Inc | Spray device having a parabolic flow surface |
| JP2015211966A (en) * | 2007-07-03 | 2015-11-26 | フィニッシング ブランズ ホールディングス，インコーポレイティド | Spray device having parabolic flow surface |
| FR3004661A1 (en) * | 2013-04-22 | 2014-10-24 | Sames Technologies | LIQUID COATING PRODUCT ELECTROSTATIC PROJECTOR AND PROJECTION INSTALLATION COMPRISING SUCH A PROJECTOR |
| WO2014173837A1 (en) * | 2013-04-22 | 2014-10-30 | Sames Technologies | Electrostatic spray device for spraying a liquid coating product, and spray facility comprising such a spray device |
| US9901941B2 (en) | 2013-04-22 | 2018-02-27 | Sames Kremlin | Electrostatic spray device for spraying a liquid coating product, and spray facility comprising such a spray device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3405493B2 (en) | 2003-05-12 |
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