【０００１】[0001]
【発明の属する技術分野】本発明は、静電塗装装置に関
する。[0001] The present invention relates to an electrostatic coating apparatus.
【０００２】[0002]
【従来の技術】霧化頭から対極である被塗物に向かって
飛び出した帯電塗粒の一部は、被塗物に付着せずに舞い
上がり、図５に示すように、アースされている静電塗装
装置本体１１および静電塗装装置が取り付けられた自動
機本体１８に付着する。静電塗装装置１１や自動機１８
に塗粒が付着したままであると、塗装作業の途中で垂
れ、被塗物上に落ち、塗膜欠陥の原因となる。そこで、
従来は、溶剤系（非導電性）の塗料を塗装する場合、図
４に示すように、静電塗装装置１１の霧化頭１２の後方
に、霧化頭１２から飛び出した帯電塗粒と同じ極性のリ
ング状の電極（コロナリング）１５を設け、帯電塗粒と
コロナリング１５の間に反発力を作用させて、舞い上が
った帯電塗粒を再度被塗物１７に向かって飛行させ、静
電塗装装置１１や自動機（ロボット）１８等に付着する
のを防止している。2. Description of the Related Art A part of a charged coating particle which has protruded from an atomizing head toward an object to be coated, which is opposite to the object, soars without adhering to the object to be coated, as shown in FIG. It adheres to the main body 11 of the electrocoating device and the main body 18 of the automatic machine to which the electrostatic coating device is attached. Electrostatic coating device 11 and automatic machine 18
If the coating particles are still adhered to the surface of the substrate, it will sag during the coating operation and fall on the object to be coated, causing a coating film defect. Therefore,
Conventionally, when a solvent-based (non-conductive) paint is applied, as shown in FIG. 4, the same as the charged coating particles that have protruded from the atomizing head 12 behind the atomizing head 12 of the electrostatic coating device 11. A polar ring-shaped electrode (corona ring) 15 is provided, and a repulsive force is applied between the charged coating particles and the corona ring 15 to cause the charged coating particles to fly again toward the article 17 to be electrostatically charged. It prevents adhesion to the coating device 11, the automatic machine (robot) 18, and the like.
【０００３】[0003]
【発明が解決しようとする課題】しかし、静電塗装装置
１１に設けられたコロナリング１５を越えて霧化頭の後
方（被塗物側と反対方向）に飛行する帯電塗粒があるた
め、静電塗装装置１４の周囲、とくに自動機１８の下部
（図５のＡ部）への帯電塗粒の付着の防止効果は十分で
はない。本発明の目的は、静電塗装装置自体や静電塗装
装置の周囲への帯電塗粒の付着を低減することができる
静電塗装装置を提供することにある。However, there are charged particles that fly behind the atomizing head (in the direction opposite to the object side) beyond the corona ring 15 provided in the electrostatic coating device 11, The effect of preventing the charged coating particles from adhering to the periphery of the electrostatic coating device 14, particularly to the lower portion (A in FIG. 5) of the automatic machine 18, is not sufficient. SUMMARY OF THE INVENTION An object of the present invention is to provide an electrostatic coating apparatus that can reduce the adhesion of charged coating particles to the electrostatic coating apparatus itself and the periphery of the electrostatic coating apparatus.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成する本発
明はつぎの通りである。塗粒の帯電と同極性に帯電され
る第１の電極を霧化頭の外周より半径方向外側に設け、
第１の電極と同極性に帯電され霧化頭の回転軸芯からの
距離が第１の電極より大きい第２の電極を第１の電極の
前端より後方に設けたことを特徴とする静電塗装装置。The present invention to achieve the above object is as follows. A first electrode charged to the same polarity as that of the coating particles is provided radially outward from the outer periphery of the atomizing head,
A second electrode, which is charged to the same polarity as the first electrode and whose distance from the rotation axis of the atomizing head is larger than the first electrode, is provided behind the front end of the first electrode. Painting equipment.
【０００５】上記本発明の静電塗装装置では、第２の電
極は、霧化頭の回転軸芯からの距離が第１の電極より大
きくされており、第１の電極の前端より後方に設けられ
ているため、第１の電極が帯電塗粒に反発力を作用させ
る範囲より広い範囲にわたって反発力を帯電塗粒に作用
させることができる。第１の電極の影響を強く受けずに
霧化頭の後方に飛行する帯電塗粒は第２の電極により反
発されて前方（被塗物側）へ飛行方向を変えられ、静電
塗装装置や静電塗装装置の周囲への付着が第２の電極が
ない場合に比べてより一層低減される。In the above electrostatic coating apparatus of the present invention, the distance between the second electrode and the rotation axis of the atomizing head is greater than that of the first electrode, and the second electrode is provided behind the front end of the first electrode. Therefore, the repelling force can be applied to the charged coating particles over a wider range than the first electrode exerts the repelling force on the charged coated particles. The charged particles that fly behind the atomizing head without being strongly affected by the first electrode are repelled by the second electrode and change the flight direction forward (toward the object to be coated). Adhesion to the periphery of the electrostatic coating device is further reduced as compared with the case where the second electrode is not provided.
【０００６】[0006]
【発明の実施の形態】本発明の望ましい実施例の静電塗
装装置を図１〜図３を参照して説明する。図１、図２は
本発明の第１実施例を示しており、図３は本発明の第２
実施例を示している。本発明の全実施例にわたって共通
な部分には、同じ符号を付してある。まず、両実施例に
共通な部分の構成を、図１を参照して説明する。本発明
実施例の静電塗装装置１は、塗料を霧化する霧化頭２
と、霧化頭２を先端に取り付け霧化頭２と一体に回転す
る回転軸３と回転軸３を回転駆動するエアモーター等を
内部に設けた装置本体４と、塗粒の帯電と同極性に帯電
され霧化頭の外周より半径方向外側に設けられた第１の
電極５と、第１の電極５と同極性に帯電され霧化頭の回
転軸芯３からの距離が第１の電極より大きく第１の電極
の前端（被塗物側が電極の前側とされる）より後方に設
けられた第２の電極６と、を有する。第１の電極と第２
の電極はリング形状でも、多角形状であっても、リング
間や多角形間がつながれた形状でもよく、また、霧化頭
の回転軸芯と平行に延びる複数本の柱の先端に形成され
た電極でもよい。また、第２の電極を、塗粒の帯電と同
極性に帯電される複数の電極のアッセンブリ（たとえ
ば、複数のリング状の電極や、複数の円周の各円周上に
配置された複数本の柱の先端に形成された電極）から構
成してもよく、その場合は後方に位置する電極ほど、霧
化頭回転軸芯からの距離を大とすることが望ましい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electrostatic coating apparatus according to a preferred embodiment of the present invention will be described with reference to FIGS. 1 and 2 show a first embodiment of the present invention, and FIG. 3 shows a second embodiment of the present invention.
An example is shown. Portions common to all embodiments of the present invention are denoted by the same reference numerals. First, the configuration of a portion common to both embodiments will be described with reference to FIG. An electrostatic coating apparatus 1 according to an embodiment of the present invention includes an atomizing head 2 for atomizing paint.
An apparatus main body 4 in which an atomizing head 2 is attached to the tip and a rotating shaft 3 that rotates integrally with the atomizing head 2 and an air motor or the like that internally drives the rotating shaft 3 are provided; A first electrode 5 provided radially outside the outer periphery of the atomization head and a distance from the rotation axis 3 of the atomization head charged to the same polarity as the first electrode 5. A second electrode 6 which is provided behind the front end of the first electrode (the object side is the front side of the electrode). The first electrode and the second
The electrode may be a ring shape, a polygonal shape, a shape in which the rings and the polygons are connected, and formed at the tip of a plurality of columns extending parallel to the rotation axis of the atomization head. An electrode may be used. In addition, the second electrode is formed by assembling a plurality of electrodes (for example, a plurality of ring-shaped electrodes or a plurality of electrodes arranged on each circumference of a plurality of circles) charged to the same polarity as the coating particles. Electrode formed at the tip of the column), and in that case, it is desirable that the distance from the axis of rotation of the atomizing head increases as the electrode is positioned rearward.
【０００７】つぎに、本発明の各実施例に特有な構成を
説明する。本発明の第１実施例では、図１に示すよう
に、たとえば環状の第１のコロナリング（第１の電極）
５が霧化頭２の後方に設けられ、さらに後方に、第１の
コロナリング５と同じ極性に帯電され、第１のコロナリ
ング５より大きい径を有する第２のコロナリング（第２
の電極）６が第１のコロナリング５の前端（被塗物７側
を第１のコロナリング５の前側とする）より後方に設け
られている。図２は、図１に示す構成を有する静電塗装
装置１を用い、第１のコロナリング５に対する第２のコ
ロナリング６の直径、取付け位置を変化させた静電塗装
装置１を実際に自動機に取付けて自動車の上塗り塗装を
行った結果を示す。図２において、縦軸は第１のコロナ
リング５の直径をｄとした場合の第２のコロナリング６
の直径を示し、横軸は第１のコロナリング５の位置を固
定（０）とした場合の第１のコロナリング５と第２のコ
ロナリング６との軸方向の距離を示す。そして目視によ
り自動機の下部への塗料の付着量を評価した結果を◎、
○、△で示す。◎はほとんど付着していない、○は少し
付着している、△は付着しているという結果を示す。図
２に見られるように、第２のコロナリングの直径を１．
１〜２．０ｄ、とくに１．５〜２．０ｄとし、第２のコ
ロナリングを第１のコロナリングの後方１０〜１５０ｍ
ｍとくに４０〜１００ｍｍに位置させると自動機の下部
への塗料の付着は少なく、高い効果が得られる。ところ
で、第２のコロナリングを設けることにより帯電される
ものが増えるので、図示されない高電圧発生器から静電
塗装装置に流れる電流値が増加する。しかしながら、第
１のコロナリングのみの場合の電流値は、高電圧ＯＮ時
５４μＡ、塗料塗布中６１μＡ（最大電流値）であった
が、第２のコロナリングを付けた場合でも（直径１．５
ｄ、取り付け位置７０ｍｍ）、高電圧を付加した時の電
流値が６１μＡ、塗料塗布中の最大電流値が６９μＡで
あり、電流増加分は微小のため、高圧異常となることは
ない。Next, a configuration specific to each embodiment of the present invention will be described. In the first embodiment of the present invention, as shown in FIG. 1, for example, an annular first corona ring (first electrode)
5 is provided behind the atomizing head 2, and further behind the second corona ring (the second corona ring (second), which is charged to the same polarity as the first corona ring 5 and has a larger diameter than the first corona ring 5).
Electrode 6) is provided behind the front end of the first corona ring 5 (the object 7 is defined as the front side of the first corona ring 5). FIG. 2 is a schematic diagram showing an automatic electrostatic coating apparatus 1 in which the diameter and the mounting position of the second corona ring 6 with respect to the first corona ring 5 are changed using the electrostatic coating apparatus 1 having the configuration shown in FIG. Shown below is the result of applying a top coat to an automobile by attaching it to a machine. In FIG. 2, the vertical axis represents the second corona ring 6 when the diameter of the first corona ring 5 is d.
The horizontal axis indicates the axial distance between the first corona ring 5 and the second corona ring 6 when the position of the first corona ring 5 is fixed (0). Then, the result of visually evaluating the amount of paint adhered to the lower part of the automatic machine is ◎,
△, △. ◎ indicates almost no adhesion, は indicates slight adhesion, and Δ indicates adhesion. As can be seen in FIG. 2, the diameter of the second corona ring is 1.
1 to 2.0 d, especially 1.5 to 2.0 d, and the second corona ring is 10 to 150 m behind the first corona ring.
When the distance is set at 40 to 100 mm, the adhesion of the paint to the lower part of the automatic machine is small, and a high effect can be obtained. By the way, the amount of electricity charged by providing the second corona ring increases, so that the current value flowing from the high voltage generator (not shown) to the electrostatic coating apparatus increases. However, the current value in the case of only the first corona ring was 54 μA when the high voltage was ON, and 61 μA (maximum current value) during the application of the paint.
d, mounting position 70 mm), the current value when a high voltage is applied is 61 μA, and the maximum current value during application of the paint is 69 μA.
【０００８】本発明の第２実施例は、導電性塗料を塗装
する際に使用する静電塗装装置に関し、図３に示すよう
に、第１の電極として静電塗装装置本体４に支持され高
電圧に印加された、霧化頭２の回転軸芯３と平行に伸び
る複数本（たとえば、６本）の針状電極（第１の電極）
５が霧化頭の周囲に設けられている。そして、針状電極
５の周囲に、霧化頭２の回転軸芯３と平行に伸びる複数
本（たとえば、６本）の針状電極５と同じ極性に帯電さ
れた第２の電極６が設けられている。第２の電極６の先
端は針状電極５の前端（被塗物７側を針状電極５の前側
とする）より後方に位置されている。The second embodiment of the present invention relates to an electrostatic coating apparatus used for applying a conductive paint. As shown in FIG. 3, as shown in FIG. A plurality (for example, six) of needle-shaped electrodes (first electrodes) extending in parallel with the rotation axis 3 of the atomizing head 2 applied with a voltage
5 is provided around the atomizing head. Around the needle electrode 5, a plurality of (for example, six) second electrodes 6 charged in the same polarity as the plurality of (for example, six) needle electrodes 5 extending in parallel with the rotation axis 3 of the atomization head 2 are provided. Have been. The tip of the second electrode 6 is located behind the front end of the needle electrode 5 (the coated object 7 side is the front side of the needle electrode 5).
【０００９】つぎに、作用を説明する。本発明の第１実
施例と第２実施例に共通な作用について説明する。霧化
頭２により微粒化され電荷を与えられた、あるいは霧化
頭２により微粒化され針状電極（第１の電極）５により
電荷を与えられた帯電塗粒は、静電気力と図示略のシェ
ーピングエアの吹き付け力で被塗物７側に飛行する。一
部の帯電塗粒は、アースされている静電塗装装置１に静
電的に引き寄せられ、被塗物７と反対側に、第１の電極
５（針状電極の場合もある）より後方（被塗物７と反対
方向）に飛行する。この一部の帯電塗粒は、塗粒と同極
性の電荷を印加された第１の電極５により反発されて飛
行の方向を前方の被塗物７側へと変えられるが、第１の
電極５の作用を強く受ける領域の外側では第１の電極５
部位を通り越して、さらに後方へと飛行しようとする。
この後方への飛行塗粒は、霧化頭２の回転軸芯３からの
距離が第１の電極５より大きく第１の電極５の前端より
後方に設けられた同じ極性の第２の電極６によって電気
的に反発され、第２の電極６から前方（被塗物側）へと
戻されるため、静電塗装装置４や静電塗装装置の周囲へ
付着することが抑制される。Next, the operation will be described. An operation common to the first and second embodiments of the present invention will be described. The charged coating particles atomized by the atomizing head 2 and given an electric charge, or atomized by the atomizing head 2 and given an electric charge by the needle-shaped electrode (first electrode) 5 are referred to as electrostatic force and not shown. It flies to the coated object 7 side by the blowing force of shaping air. Some of the charged coating particles are electrostatically attracted to the grounded electrostatic coating device 1, and are located behind the first electrode 5 (which may be a needle electrode) on the opposite side of the object 7 to be coated. (In the direction opposite to the object 7). Some of the charged coating particles are repelled by the first electrode 5 to which a charge having the same polarity as that of the coating particles is applied, and the direction of flight is changed to the front of the object 7 to be coated. Outside the region strongly affected by the first electrode 5
Try to fly further back, past the part.
The backward flying coating particles are formed by a second electrode 6 of the same polarity, which is provided behind the front end of the first electrode 5 with the distance of the atomization head 2 from the rotation axis 3 larger than the first electrode 5. As a result, it is electrically repelled and returned from the second electrode 6 to the front (to be coated), so that adhesion to the electrostatic coating device 4 or the periphery of the electrostatic coating device is suppressed.
【００１０】本発明の各実施例の作用について説明す
る。本発明の第１実施例では、霧化頭２により微粒化さ
れ電荷を与えられた帯電塗粒が被塗物７側へ付着せず
に、霧化頭２の後方に向かって飛行する。霧化頭２の後
方に飛行した帯電塗粒は、同じ極性に帯電され霧化頭２
の後方に配置されたリング状の第１のコロナリング５と
の間の相反発する力によって被塗物７側に飛行の方向を
変えられる。第１のコロナリング５の作用を強く受ける
領域の外側で第１のコロナリング５の影響を強く受ける
ことなくさらに霧化頭２の後方へ飛行しようとする一部
の帯電塗粒は、塗粒および第１のコロナリング５と同じ
極性に帯電された第２のコロナリング６との間の相反発
する力によってその飛行方向を被塗物７側へ変えられ
る。第２のコロナリング６は第１のコロナリング５の径
より大きい径を有しているので、帯電塗粒と反発する力
が作用する範囲が第１のコロナリング５より径大で、第
１のコロナリング５の影響を強く受ける領域の外側で後
方に飛行する帯電塗粒に反発力を作用させることができ
る。第１のコロナリングのみでは１週間に３回、塗粒が
直接付着するのを防止するために自動機に貼られたビニ
ールを交換する必要があったが、本実施例においては１
週間に１回交換するだけでよい。第１のコロナリングの
直径をｄとした場合、第２のコロナリングの直径を１．
１〜２．０ｄ、とくに、１．５〜２．０ｄとし、第２の
コロナリングを第１のコロナリングの後方１０〜１５０
ｍｍとくに４０〜１００ｍｍに位置させると、帯電塗粒
は第２の電極により被塗物側へ飛行し、静電塗装装置や
自動機に付着する量が少なくなる。アース状態にある自
動機本体と、第１の電極、第２の電極の距離が近くなる
と、電位差によりスパークを発生する可能性が高くなる
ので、電極の大きさ、取り付け位置はスパークを発生さ
せない位置に調整される。The operation of each embodiment of the present invention will be described. In the first embodiment of the present invention, the charged coating particles atomized and charged by the atomizing head 2 fly toward the rear of the atomizing head 2 without adhering to the object 7 to be coated. The charged paint particles flying behind the atomizing head 2 are charged to the same polarity and are atomized.
The direction of flight can be changed to the object 7 by the repulsive force between the first corona ring 5 and the ring-shaped first corona ring 5 disposed behind the first corona ring. Some of the charged granules that attempt to fly further behind the atomizing head 2 without being strongly affected by the first corona ring 5 outside the region strongly affected by the first corona ring 5 are coated granules. The flying direction can be changed to the object 7 by the repulsive force between the first corona ring 5 and the second corona ring 6 charged to the same polarity. Since the second corona ring 6 has a diameter larger than the diameter of the first corona ring 5, the range in which the repelling force acts on the charged coating particles is larger than that of the first corona ring 5, and the first corona ring 5 has a larger diameter. A repulsive force can be applied to the charged coating particles flying backward outside the region strongly affected by the corona ring 5. With the first corona ring alone, it was necessary to replace the vinyl attached to the automatic machine three times a week in order to prevent the coating particles from directly adhering.
It only needs to be changed once a week. Assuming that the diameter of the first corona ring is d, the diameter of the second corona ring is 1.
1 to 2.0 d, especially 1.5 to 2.0 d, and the second corona ring is 10 to 150 behind the first corona ring.
When it is positioned at 40 to 100 mm, the charged coating particles fly to the object side by the second electrode, and the amount of the particles applied to the electrostatic coating device or the automatic machine is reduced. When the distance between the main body of the automatic machine in the ground state and the first electrode and the second electrode becomes short, the possibility of generating a spark due to a potential difference increases. Therefore, the size of the electrode and the mounting position are positions where the spark is not generated. It is adjusted to.
【００１１】本発明の第２実施例では、霧化頭２により
微粒化され飛散された後、柱状先端の針状電極（第１の
電極）５によって電荷を与えられた帯電塗粒の一部が被
塗物へ付着せずに、霧化頭２後方に向かって飛行しよう
とする。霧化頭２の周囲に配置された針状電極（第１の
電極）５は、帯電塗粒と同じ極性を有するため、後方に
飛行してきた帯電塗粒との間に作用する相反発する力に
より帯電塗粒の飛行方向を被塗物７側へ変える。針状電
極５の作用を強く受ける領域の外側で針状電極５の影響
を強く受けることなくさらに霧化頭２の後方に向かって
飛行しようとする帯電塗粒は、針状電極５と同じ極性に
帯電された第２の電極６との間に作用する相反発する力
によって、その飛行方向を被塗物７側へ変えられる。第
２の電極６は針状電極５の外方でかつ針状電極５の前端
より後方に設けられ、針状電極５より径大の範囲にわた
って帯電塗粒を反発させる作用があるため、針状電極５
を越えて飛行した帯電塗粒は、第２の電極６により前方
（被塗物７側）へ飛行方向を変えられ得る。In the second embodiment of the present invention, a part of the charged particles which are atomized and scattered by the atomizing head 2 and are given a charge by the needle-shaped electrode (first electrode) 5 at the columnar tip. Does not adhere to the object to be coated, and tries to fly toward the rear of the atomizing head 2. Since the needle-shaped electrode (first electrode) 5 disposed around the atomizing head 2 has the same polarity as the charged coating particles, the needle-shaped electrode (first electrode) 5 is caused by a repulsive force acting on the charged coating particles flying backward. The flying direction of the charged particles is changed to the object 7 side. The charged coating particles that fly further toward the rear of the atomizing head 2 without being strongly affected by the needle electrode 5 outside the region strongly affected by the needle electrode 5 have the same polarity as the needle electrode 5. The flight direction can be changed to the object 7 by the repulsive force acting between the second electrode 6 and the charged second electrode 6. The second electrode 6 is provided outside the needle electrode 5 and behind the front end of the needle electrode 5, and has an action of repelling the charged coating particles over a larger diameter than the needle electrode 5. Electrode 5
The charged particles that have flown over the second electrode 6 can be changed in flight direction (toward the object 7 to be coated) by the second electrode 6.
【００１２】[0012]
【発明の効果】本発明の静電塗装装置によれば、第１の
電極と同極性に帯電され、霧化頭の回転軸芯からの距離
が第１の電極より大きい第２の電極を第１の電極の前端
より後方に設けたので、第１の電極を越えて後方へ飛行
しようとする一部の帯電塗粒の飛行を抑制でき、静電塗
装装置やその周囲への帯電塗粒の付着を第２の電極を設
けない従来に比べて抑制することができる。According to the electrostatic coating apparatus of the present invention, the second electrode which is charged to the same polarity as the first electrode and whose distance from the rotation axis of the atomizing head is larger than the first electrode is used as the second electrode. Since it is provided rearward from the front end of the first electrode, it is possible to suppress the flight of a part of the charged paint particles that fly backward beyond the first electrode, and to prevent the charged paint particles from flying around the electrostatic coating device and the periphery thereof. Adhesion can be suppressed as compared with the related art in which the second electrode is not provided.
【図１】本発明の第１実施例の静電塗装装置の側面図で
ある。FIG. 1 is a side view of an electrostatic coating apparatus according to a first embodiment of the present invention.
【図２】図１の静電塗装装置の第２のコロナリングの取
り付け位置と直径を変えて塗装状態を調べた結果を示す
図である。FIG. 2 is a view showing a result of examining a coating state by changing a mounting position and a diameter of a second corona ring of the electrostatic coating apparatus of FIG. 1;
【図３】本発明の第２実施例の静電塗装装置の側面図で
ある。FIG. 3 is a side view of an electrostatic coating apparatus according to a second embodiment of the present invention.
【図４】従来の静電塗装装置の側面図である。FIG. 4 is a side view of a conventional electrostatic coating apparatus.
【図５】従来の静電塗装装置を自動機に取り付けた状態
を示す概略斜視図である。FIG. 5 is a schematic perspective view showing a state where a conventional electrostatic coating apparatus is attached to an automatic machine.
１ 静電塗装装置 ２ 霧化頭 ３ 回転軸芯 ５ 第１の電極 ６ 第２の電極 DESCRIPTION OF SYMBOLS 1 Electrostatic coating apparatus 2 Atomization head 3 Rotation axis 5 First electrode 6 Second electrode
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22213396AJPH1057848A (en) | 1996-08-23 | 1996-08-23 | Electrostatic coating equipment |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22213396AJPH1057848A (en) | 1996-08-23 | 1996-08-23 | Electrostatic coating equipment |
| Publication Number | Publication Date |
|---|---|
| JPH1057848Atrue JPH1057848A (en) | 1998-03-03 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22213396APendingJPH1057848A (en) | 1996-08-23 | 1996-08-23 | Electrostatic coating equipment |
| Country | Link |
|---|---|
| JP (1) | JPH1057848A (en) |
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