JP2003154296A - Method of controlling wet coating film and coating apparatus - Google Patents
Method of controlling wet coating film and coating apparatusInfo
- Publication number
- JP2003154296A JP2003154296A JP2001354566A JP2001354566A JP2003154296A JP 2003154296 A JP2003154296 A JP 2003154296A JP 2001354566 A JP2001354566 A JP 2001354566A JP 2001354566 A JP2001354566 A JP 2001354566A JP 2003154296 A JP2003154296 A JP 2003154296A
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- Prior art keywords
- coating
- wet
- paint
- coating film
- air
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- 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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- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば自動車のメ
タリック塗装において、その塗膜をウエットの状態で管
理して塗装不良を防止するのに用いられるウエット塗膜
管理方法およびウエット塗膜管理方法を用いた塗装装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet coating film management method and a wet coating film management method which are used to prevent coating defects by controlling the coating film in a wet state in, for example, metallic coating of automobiles. The present invention relates to the coating device used.
【０００２】[0002]
【従来の技術】自動車のボディの塗装には、主としてソ
リッド系とメタリック系があり、近年では、外観体裁が
より良好であるメタリック塗装が多く採用されている。
自動車のメタリック塗装は、溶剤（シンナー）および顔
料樹脂にアルミニウム粉を混合した塗料を用いたもので
あり、周知の静電塗装により行うのが一般的である。2. Description of the Related Art There are mainly solid and metallic coatings for automobile bodies, and in recent years, metallic coatings, which have a better appearance, have been widely adopted.
Metallic coating of automobiles uses a paint prepared by mixing a solvent (thinner) and a pigment resin with aluminum powder, and is generally performed by a well-known electrostatic coating.
【０００３】図５は従来の塗装装置を説明する図であっ
て、図示の塗装装置は、ベース用自動塗装機１０１と、
クリア用自動塗装機１０２を備えている。各自動塗装機
１０１，１０２は、ボディＢの上面に対応する塗装ガン
１０１Ａ，１０２Ａと側面に対応する塗装ガン１０１
Ｂ，１０２Ｂを備えている。そして、自動車のボディＢ
を台車１００により搬送しながらベース塗装（上塗り塗
装）およびクリア塗装を順に行い、その後、ボディＢを
乾燥炉に搬送する。FIG. 5 is a view for explaining a conventional coating apparatus. The coating apparatus shown in the drawing is an automatic base coating machine 101,
An automatic clear coating machine 102 is provided. Each of the automatic coating machines 101 and 102 includes a coating gun 101A and 102A corresponding to the upper surface of the body B and a coating gun 101 corresponding to the side surface.
B, 102B. And the body B of the car
While being transported by the carriage 100, base coating (top coating) and clear coating are sequentially performed, and then the body B is transported to the drying furnace.
【０００４】ところで、メタリック塗装では、塗膜形成
時におけるアルミニウム粉の配列が仕上りに大きな影響
を与えることとなり、アルミニウム粉の配列の偏りによ
り色むらが発生したり、塗膜の平滑性（鮮映性）が損な
われたりすることがある。このアルミニウム粉の配列
は、塗膜形成時に経時的に変化するシンナー残存量によ
って左右されることが知られている。また、塗膜中のシ
ンナー残存量は、塗装ブース内の温度や湿度、塗料の温
度あるいは塗料中の混合比率（例えば揮発の速いシンナ
ーと遅いシンナーとの比率）に左右される。By the way, in metallic coating, the arrangement of aluminum powder at the time of forming a coating film has a great influence on the finish, and uneven coloring occurs due to uneven distribution of the aluminum powder, and the smoothness of the coating film (vividness). Sex) may be impaired. It is known that the arrangement of the aluminum powder depends on the residual amount of thinner that changes with time during coating film formation. Further, the residual amount of thinner in the coating film depends on the temperature and humidity in the coating booth, the temperature of the coating material, or the mixing ratio in the coating material (for example, the ratio of thinner thinner that volatilizes faster and thinner thinner).
【０００５】そこで、アルミニウム粉の配列による塗装
不良を防止するには、塗装ブース内を所定の温度や湿度
に維持すると共に、塗料の温度や成分を調整する一方
で、塗膜中の非揮発性成分やシンナー残存量を測定し
て、これを管理するようにしており、従来では、アルミ
重量法により塗膜中の非揮発性成分を測定していた。Therefore, in order to prevent the coating failure due to the arrangement of the aluminum powder, the interior of the coating booth is maintained at a predetermined temperature and humidity, and the temperature and components of the coating material are adjusted, while the non-volatile content in the coating film is maintained. The components and the residual amount of the thinner are measured and controlled, and conventionally, the non-volatile component in the coating film is measured by the aluminum weight method.
【０００６】アルミ重量法は、測定専用のボディＢや適
宜の部品に貼り付けたアルミ箔に塗装を行い、塗装後の
時間経過に伴うアルミ箔の重量変化を測定することによ
り、塗膜中の非揮発性成分やシンナー残存量を求めるも
のである。なお、類似公知例としては、特開平９−１０
５６１２号公報、特開２０００−２０５８３０号公報お
よび特開平９−２９１５７号公報等がある。According to the aluminum weight method, the body B for exclusive use in measurement or the aluminum foil attached to an appropriate component is coated, and the weight change of the aluminum foil with the lapse of time after coating is measured. Non-volatile components and residual amount of thinner are calculated. As a similar publicly known example, Japanese Patent Laid-Open No. 9-10
5612, JP 2000-205830 A, JP 9-29157 A and the like.
【０００７】[0007]
【発明が解決しようとする課題】ところで、自動車のボ
ディの塗装のように、自動化された塗装ラインで次々に
塗装を行なう場合には、塗装状態の良否をできるだけ速
やかに検出して塗装の条件を改善し、常に最良の塗装品
質を保つ必要がある。By the way, in the case where coating is performed one after another on an automated coating line, such as when painting a car body, the quality of the coating state is detected as quickly as possible to determine the coating condition. It is necessary to improve and always maintain the best coating quality.
【０００８】しかし、アルミ重量法により非揮発性成分
やシンナー残存量を測定する場合には、アルミ箔の貼付
け、剥離、乾燥および重量測定といった一連の作業が必
要であると共に、最終的に非揮発性成分やシンナー残存
量を求めるまでに時間がかかるので、生産中の実車で測
定することは不可能である。このため、塗装ラインの空
時間を利用して測定を行うのが現状であり、重要な管理
項目であるにも係わらず定常的な測定が困難であること
から、塗膜管理が充分に行われているとは言い難い状況
にあり、充分な塗膜管理を実現するための改善が望まれ
ていた。However, when the non-volatile components and the residual amount of thinner are measured by the aluminum gravimetric method, a series of operations such as sticking, peeling, drying and weighing of the aluminum foil are necessary and finally the non-volatile. Since it takes time to determine the sex component and the residual amount of thinner, it is impossible to measure it with an actual vehicle in production. For this reason, it is the current situation that measurements are performed using the idle time of the coating line, and even though it is an important control item, steady measurement is difficult, so coating film management is sufficiently performed. It is difficult to say that there is a problem, and improvements have been desired to realize sufficient coating film management.
【０００９】また、年間を通して塗装ブース内の温度や
湿度を所定に保つには、大容量の冷凍機などを含む大が
かりな設備と膨大なエネルギが必要であり、省エネルギ
やコストなどの面で好ましくないという問題点があっ
た。Further, in order to maintain a predetermined temperature and humidity in the coating booth throughout the year, a large amount of equipment including a large-capacity refrigerator and a huge amount of energy are required, which is preferable in terms of energy saving and cost. There was a problem that it did not exist.
【００１０】[0010]
【発明の目的】本発明は、上記従来の状況に鑑みて成さ
れたものであって、被塗装物に順次自動塗装を行う塗装
ラインにおいて、塗装後のウエット塗膜をリアルタイム
に管理して塗装不良を防止することができ、また、省エ
ネルギや低コスト化などにも貢献することができるウエ
ット塗膜管理方法および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 conventional circumstances, and in a coating line for sequentially automatically coating an object to be coated, the wet coating film after coating is managed in real time for coating. An object of the present invention is to provide a wet coating film management method and a coating device that can prevent defects and contribute to energy saving and cost reduction.
【００１１】[0011]
【課題を解決するための手段】本発明に係わるウエット
塗膜管理方法は、請求項１として、空気調整された塗装
ブース内で、温度や成分が調整された塗料を用いて被塗
装物に自動塗装を行うに際し、塗装後のウエット塗膜中
の非揮発性成分を測定し、その測定結果に基づいて塗装
ブース内の空気調整、塗料調整および塗装機の塗装条件
調整のうちの少なくとも１つを行う構成とし、請求項２
として、使用する塗料が水系塗料であって、ウエット塗
膜中の非揮発性成分の測定結果に基づいて、ウエット塗
膜中の水分量を調整する構成とし、請求項３として、塗
装工程として一次塗装と二次塗装を備えており、少なく
とも一次塗装後のウエット塗膜中の非揮発性成分を測定
する構成としており、上記構成をもって従来の課題を解
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 wet coating film management method, wherein a coating material whose temperature and components are adjusted is automatically applied to an object to be coated in an air-conditioned coating booth. When coating, measure the non-volatile components in the wet coating after coating, and based on the measurement results, perform at least one of air adjustment in the coating booth, coating adjustment, and coating condition adjustment of the coating machine. Claim 2
As a coating composition, the coating composition used is a water-based coating composition, and the water content in the wet coating film is adjusted based on the measurement result of the non-volatile components in the wet coating film. It is provided with a coating and a secondary coating, and is configured to measure the non-volatile components in the wet coating film after at least the primary coating, and the above configuration serves as a means for solving the conventional problems.
【００１２】また、本発明に係わるウエット塗膜管理方
法が用いられる塗装装置は、請求項４として、空気調整
された塗装ブース内で、温度や成分が調整された塗料を
用いて被塗装物に自動塗装を行う装置であって、塗装ブ
ース内の空気調整を行う空気調整手段と、塗装機に供給
する塗料の温度や成分を調整する塗料調整手段と、塗装
機の塗装条件を調整する塗装条件調整手段と、塗装後の
ウエット塗膜中の非揮発性成分を測定する塗着ＮＶ測定
手段と、塗着ＮＶ測定手段の測定結果に基づいて空気調
整手段、塗料調整手段および塗装条件調整手段を選択的
に制御する主制御手段を備えた構成とし、請求項５とし
て、塗着ＮＶ測定手段による測定工程の次工程として、
ウエット塗膜中の水分を蒸発させるフラッシュオフ手段
を備え、主制御手段が、塗着ＮＶ測定手段の測定結果に
基づいてフラッシュオフ手段を制御する手段である構成
とし、請求項６として、塗装機が、一次塗装機と二次塗
装機を備えていると共に、塗着ＮＶ測定手段が、少なく
とも一次塗装機による塗装後のウエット塗膜中の非揮発
性成分を測定する手段である構成としており、上記構成
をもって従来の課題を解決するための手段としている。A coating apparatus using the wet coating film management method according to the present invention is, as a fourth aspect, an object to be coated with a coating material whose temperature and components are adjusted in an air-controlled coating booth. A device for automatic painting, an air adjusting means for adjusting the air inside the painting booth, a paint adjusting means for adjusting the temperature and components of the paint supplied to the painting machine, and a painting condition for adjusting the painting conditions of the painting machine. Adjusting means, coating NV measuring means for measuring non-volatile components in the wet coating film after coating, and air adjusting means, paint adjusting means and coating condition adjusting means based on the measurement results of the coating NV measuring means. A configuration is provided that includes a main control unit that selectively controls, and as a fifth step, as a step subsequent to the measurement step by the coating NV measuring section,
7. A flash-off means for evaporating water in the wet coating film is provided, and the main control means is a means for controlling the flash-off means based on the measurement result of the coating NV measuring means. Is provided with a primary coating machine and a secondary coating machine, and the coating NV measuring means is a means for measuring at least a non-volatile component in the wet coating film after coating by the primary coating machine, The above configuration is used as means for solving the conventional problems.
【００１３】なお、上記構成において、塗装後のウエッ
ト塗膜中の非揮発性成分の測定および同測定を行う塗着
ＮＶ測定手段には、本出願人が先に出願した特願２００
１−１６８６８３の塗装品質解析装置を用いることがで
きる。In the above structure, the non-volatile component in the wet coating film after coating and the coating NV measuring means for performing the same measurement are applied to Japanese Patent Application No.
The coating quality analyzer of 1-168683 can be used.
【００１４】[0014]
【発明の作用】本発明の請求項１に係わるウエット塗膜
管理方法では、空気調整された塗装ブース内で、温度や
成分が調整された塗料を用いて被塗装物に自動塗装を行
うに際し、塗装後のウエット塗膜中の非揮発性成分（以
下、『塗着ＮＶ』とする）を測定する。つまり、メタリ
ック塗装では、塗膜形成時におけるアルミニウム粉の配
列が塗装の良否を左右し、このアルミニウム粉の配列が
ウエット塗膜中のシンナー残存量によって左右されるか
らである。この塗着ＮＶの測定には、例えば特願２００
１−１６８６８３に記載された塗装品質解析装置が用い
られる。In the wet coating film management method according to claim 1 of the present invention, when the coating material is automatically coated in the air-conditioned coating booth with the coating material whose temperature and components are adjusted, Non-volatile components (hereinafter referred to as "coating NV") in the wet coating film after coating are measured. That is, in metallic coating, the arrangement of the aluminum powder at the time of forming the coating film determines the quality of the coating, and the arrangement of the aluminum powder depends on the residual amount of thinner in the wet coating film. To measure this coating NV, for example, Japanese Patent Application No. 200
The coating quality analysis device described in 1-168683 is used.
【００１５】すなわち、塗装品質解析装置は、反射光検
出手段により、塗装後の被検査面に赤外光を含む光を照
射して、被検査面からの反射光の中から塗料のシンナー
溶剤成分および樹脂成分（非揮発性成分）に吸収され易
い波長成分と塗料のシンナー溶剤成分または樹脂成分に
吸収され難い波長成分を測定し、信号増幅手段により、
反射光検出手段からの電気信号情報を増幅した後、シン
ナー吸収波長光測定手段により、信号増幅手段からの各
種電気信号情報からシンナー溶剤成分に吸収され易い波
長成分の信号情報を取り出すと共に、非吸収波長光測定
手段により、信号増幅手段からの各種電気信号情報から
シンナー溶剤成分または樹脂成分に吸収され難い波長成
分の信号情報を取り出す。That is, in the coating quality analysis apparatus, the reflected light detecting means irradiates the surface to be inspected after coating with light including infrared light, and the thinner solvent component of the paint is selected from the light reflected from the surface to be inspected. And a wavelength component which is easily absorbed by the resin component (non-volatile component) and a thinner solvent component of the paint or the resin component which is difficult to be absorbed, and the signal amplification means
After amplifying the electrical signal information from the reflected light detecting means, the thinner absorption wavelength light measuring means extracts the signal information of the wavelength component that is easily absorbed by the thinner solvent component from the various electrical signal information from the signal amplifying means, and also does not absorb it. The wavelength light measuring means extracts the signal information of the wavelength component which is difficult to be absorbed by the thinner solvent component or the resin component from the various electric signal information from the signal amplifying means.
【００１６】そして、ウエット膜厚算出手段により、非
吸収波長光測定手段からの信号情報と予め設定した塗料
種情報と塗布後の経過時間とに基づいて塗膜厚を算出
し、シンナー溶剤成分量算出手段により、シンナー吸収
波長光測定手段からの信号情報と塗料種情報とウエット
膜厚算出手段からの塗膜厚情報とに基づいてシンナー溶
剤成分の濃度を算出した後、非揮発成分量算出手段によ
り、シンナー溶剤成分量算出手段からのシンナー溶剤成
分の濃度情報から塗着後の非揮発成分量を算出する。Then, the wet film thickness calculating means calculates the coating film thickness based on the signal information from the non-absorption wavelength light measuring means, the preset paint type information and the elapsed time after application, and the thinner solvent component amount. The calculating means calculates the concentration of the thinner solvent component based on the signal information from the thinner absorption wavelength light measuring means, the paint type information, and the coating film thickness information from the wet film thickness calculating means, and then the non-volatile component amount calculating means. Thus, the amount of the non-volatile component after coating is calculated from the concentration information of the thinner solvent component from the thinner solvent component amount calculating means.
【００１７】このようにして、塗装品質解析装置は、赤
外線の特定吸収波長域および非吸収波長域の光反射を測
定し、非吸収波長域の光反射とアルミニウム粉の配列の
経時的な変化を考慮した膜厚算出アルゴリズムにより塗
布直後の塗膜厚を算出し、その塗膜厚とシンナー溶剤成
分の吸収波長域の光反射または吸収光度からシンナー溶
剤成分の濃度を算出することにより、塗着ＮＶを非接触
で且つ短時間で連続的に計測する。つまり、自動化され
た塗装ラインにおいても塗着ＮＶや塗膜厚およびシンナ
ー残存量をリアルタイムで計測し得るものである。In this way, the coating quality analyzer measures the light reflection in the specific absorption wavelength range and the non-absorption wavelength range of infrared rays, and changes with time of the light reflection in the non-absorption wavelength range and the arrangement of the aluminum powder. The coating thickness immediately after coating is calculated by a film thickness calculation algorithm that takes into consideration, and the concentration of the thinner solvent component is calculated by calculating the concentration of the thinner solvent component from the thickness of the coating film and the light reflection or absorption intensity in the absorption wavelength range of the thinner solvent component. Is continuously measured in a short time without contact. That is, the coating NV, the coating thickness, and the residual amount of thinner can be measured in real time even in an automated coating line.
【００１８】次に、当該ウエット塗膜管理方法では、上
記の如く塗着ＮＶを測定した後、その測定結果に基づい
て塗装ブース内の空気調整、塗料調整および塗装機の塗
装条件調整のうちの少なくとも１つを行う。つまり、塗
着ＮＶは、塗装ブース内の空気環境、塗料の条件および
塗装機の塗装条件により変化することから、その測定結
果が所定の管理範囲内にあるか否かを判断し、範囲外で
ある場合には、空気調整として温度、湿度、調整空気の
風速あるいは風向を調整し、あるいは塗料調整として温
度やシンナー配合比率を調整し、あるいは塗装機の塗装
条件として塗料の噴霧状態を調整して、ウエット塗膜中
の塗着ＮＶが管理範囲内になるようにする。Next, in the wet coating film management method, after the coating NV is measured as described above, the air adjustment in the coating booth, the coating material adjustment and the coating condition adjustment of the coating machine are performed based on the measurement result. Do at least one. In other words, the coating NV changes depending on the air environment in the coating booth, the conditions of the coating material and the coating conditions of the coating machine. Therefore, it is judged whether or not the measurement result is within the predetermined control range, and outside the range. In some cases, adjust the temperature, humidity and wind speed or direction of the adjusted air as air adjustment, or adjust the temperature and thinner blending ratio as paint adjustment, or adjust the spray state of paint as the painting condition of the painting machine. , Keep the coating NV in the wet coating within the control range.
【００１９】これにより、ウエット塗膜中の塗着ＮＶお
よびシンナー残存量が速やかに改善されて、良好な塗膜
が得られることとなる。なお、静電塗装では、塗装機と
して高速回転するカップにより塗料を霧化するスプレー
ガン（ベルガン）が多用されており、この場合の塗装条
件調整としてはカップの回転数を調整する。As a result, the coating NV and the residual amount of thinner in the wet coating can be promptly improved, and a good coating can be obtained. In electrostatic coating, a spray gun (bell gun) that atomizes the paint by a cup that rotates at high speed is often used as a coating machine. In this case, the number of rotations of the cup is adjusted as the coating condition adjustment.
【００２０】本発明の請求項２に係わるウエット塗膜管
理方法では、水系塗料を使用する。この場合、溶剤系塗
料においてウエット塗膜中のシンナー残存量がアルミニ
ウム粉の配列を左右するのと同様に、水系塗料において
はウエット塗膜中の水分量がアルミニウム粉の配列を左
右する。したがって、塗着ＮＶの測定結果に基づいて空
気調整、塗料調整あるいは塗装機の塗装条件調整を行う
ことにより、ウエット塗膜中の塗着ＮＶおよび水分量が
速やかに改善される。In the wet coating film management method according to claim 2 of the present invention, a water-based paint is used. In this case, the amount of water remaining in the wet coating of the water-based paint influences the arrangement of the aluminum powder in the same manner as the residual amount of thinner in the wet coating affects the arrangement of the aluminum powder in the solvent-based paint. Therefore, by adjusting the air, the paint, or the coating conditions of the coating machine based on the measurement result of the coating NV, the coating NV and the water content in the wet coating film can be promptly improved.
【００２１】また、水系塗料を用いた塗装では、塗装後
の被塗装物を赤外線加熱やエアブローによりウエット塗
膜中の水分を蒸発させて水分量を調整するフラッシュオ
フ手段が用いられる。そこで、当該ウエット塗膜管理方
法では、塗着ＮＶの測定結果に基づいてフラッシュオフ
手段による水分量の調整を行うことにより、ウエット塗
膜中の塗着ＮＶが管理範囲内になるようにし、とくに、
被塗装物をフラッシュオフ手段による水分量調整の工程
に搬入する前に、ウエット塗膜中の塗着ＮＶおよび水分
量が速やかに改善される。In the case of coating with a water-based paint, flash-off means is used to adjust the water content by evaporating the water content in the wet coating film by infrared heating or air blowing of the coated object after coating. Therefore, in the wet coating film management method, by adjusting the water content by the flash-off means based on the measurement result of the coating NV, the coating NV in the wet coating film falls within the control range. ,
The coating NV and the water content in the wet coating film are promptly improved before the object to be coated is carried into the step of adjusting the water content by the flash-off means.
【００２２】本発明の請求項３に係わるウエット塗膜管
理方法では、塗装工程として一次塗装と二次塗装を備え
ており、いわゆるウエット・オン・ウエット塗装を行
う。この場合には、少なくとも一次塗装後のウエット塗
膜中の塗着ＮＶを測定し、その測定結果に基づいて空気
調整、塗料調整あるいは塗装機の塗装条件調整を行うこ
とにより、ウエット塗膜中の塗着ＮＶが管理範囲内にな
るようにし、とくに、被塗装物を二次塗装の工程に搬入
する前に、ウエット塗膜中の塗着ＮＶおよびシンナー残
存量あるいは水分量が速やかに改善される。In the wet coating film management method according to the third aspect of the present invention, the coating process includes primary coating and secondary coating, and so-called wet-on-wet coating is performed. In this case, at least the coating NV in the wet coating film after the primary coating is measured, and air adjustment, paint adjustment, or coating condition adjustment of the coating machine is performed based on the measurement result, thereby Keeping the coating NV within the control range, and in particular, before the object to be coated is carried into the secondary coating process, the coating NV and the residual amount of thinner or the amount of water in the wet coating film are rapidly improved. .
【００２３】本発明の請求項４に係わる塗装装置では、
空気調整された塗装ブース内で、温度や成分が調整され
た塗料を用いて被塗装物に自動塗装を行うに際し、塗着
ＮＶ測定手段により、塗装後のウエット塗膜中の塗着Ｎ
Ｖを測定する。この塗着ＮＶ測定手段には、請求項１の
作用で説明した塗装品質解析装置が用いられる。In the coating apparatus according to claim 4 of the present invention,
When automatically coating an object to be coated with a paint whose temperature and components are adjusted in an air-conditioned coating booth, a coating NV measuring means is used to apply a coating N in a wet coating film after coating.
Measure V. As the coating NV measuring means, the coating quality analyzing apparatus described in the operation of claim 1 is used.
【００２４】そして、主制御手段により、塗着ＮＶの測
定結果に基づいて空気調整手段、塗料調整手段および塗
装条件調整手段を選択的に制御する。すなわち、塗着Ｎ
Ｖの測定結果が所定の管理範囲内にあるか否かを判断
し、範囲外である場合には、空気調整手段において、温
度、湿度、調整空気の風速および風向を調整し、あるい
は塗料調整手段において、温度やシンナー配合比率を調
整し、あるいは塗装条件調整手段において、塗装機の塗
装条件を調整して、ウエット塗膜中の塗着ＮＶが管理範
囲内になるようにする。これにより、ウエット塗膜中の
塗着ＮＶおよびシンナー残存量を速やかに改善して良好
な塗膜を得る。Then, the main control means selectively controls the air adjusting means, the paint adjusting means and the coating condition adjusting means based on the measurement result of the coating NV. That is, coating N
It is determined whether or not the measurement result of V is within a predetermined control range, and if it is out of the range, the air adjusting means adjusts the temperature, the humidity, the wind speed and the wind direction of the adjusted air, or the paint adjusting means. In step (1), the temperature and thinner blending ratio are adjusted, or the coating condition adjusting means adjusts the coating conditions of the coating machine so that the coating NV in the wet coating film falls within the control range. Thereby, the coating NV and the residual amount of thinner in the wet coating film are promptly improved to obtain a favorable coating film.
【００２５】本発明の請求項５に係わる塗装装置では、
水系塗料の使用を対象としており、これに伴って、塗着
ＮＶ測定手段による測定工程の次工程として、ウエット
塗膜中の水分を蒸発させるフラッシュオフ手段を備えて
いる。この場合、請求項２の作用にも記載したように、
溶剤系塗料においてウエット塗膜中のシンナー残存量が
アルミニウム粉の配列を左右するのと同様に、水系塗料
においてはウエット塗膜中の水分量がアルミニウム粉の
配列を左右する。In the coating apparatus according to claim 5 of the present invention,
It is intended for use of water-based paints, and accordingly, a flash-off means for evaporating the water content in the wet coating film is provided as the next step of the measuring step by the coating NV measuring means. In this case, as described in the operation of claim 2,
Just as the amount of residual thinner in the wet coating affects the arrangement of the aluminum powder in the solvent-based paint, the amount of water in the wet coating affects the arrangement of the aluminum powder in the water-based paint.
【００２６】そこで、主制御手段により、塗着ＮＶの測
定結果に基づいて空気調整手段、塗料調整手段あるいは
塗装機の塗装条件調整手段を制御するのに加えて、フラ
ッシュオフ手段を制御することにより、ウエット塗膜中
の水分量を調整して塗着ＮＶが管理範囲内になるように
し、とくに、被塗装物をフラッシュオフ手段による水分
量調整の工程に搬入する前に、ウエット塗膜中の塗着Ｎ
Ｖおよび水分量を速やかに改善する。Therefore, in addition to controlling the air adjusting means, the paint adjusting means or the coating condition adjusting means of the coating machine based on the measurement result of the coating NV by the main control means, the flash off means is controlled. , The amount of water in the wet coating film is adjusted so that the coating NV is within the control range. In particular, before the object to be coated is carried into the process of adjusting the water content by the flash-off means, Coating N
Immediately improve V and water content.
【００２７】本発明の請求項６に係わる塗装装置では、
塗装機が、一次塗装機と二次塗装機を備えており、いわ
ゆるウエット・オン・ウエット塗装を行う。この場合に
は、塗着ＮＶ測定手段が、少なくとも一次塗装機による
塗装後のウエット塗膜中の非揮発性成分を測定する手段
であり、その測定結果に基づいて空気調整手段、塗料調
整手段あるいは塗装機の塗装条件調整手段を制御するこ
とにより、ウエット塗膜中の塗着ＮＶが管理範囲内にな
るようにし、とくに、被塗装物を二次塗装の工程に搬入
する前に、ウエット塗膜中の塗着ＮＶおよびシンナー残
存量あるいは水分量を速やかに改善する。In the coating apparatus according to claim 6 of the present invention,
The coating machine is equipped with a primary coating machine and a secondary coating machine, and performs so-called wet-on-wet coating. In this case, the coating NV measuring means is a means for measuring at least the non-volatile components in the wet coating film after coating by the primary coating machine, and based on the measurement result, the air adjusting means, the paint adjusting means or By controlling the coating condition adjusting means of the coating machine, the coating NV in the wet coating film falls within the control range, and in particular, before the object to be coated is carried into the secondary coating process, the wet coating film Immediately improve the coating NV and the residual amount of thinner or the amount of water.
【００２８】[0028]
【発明の効果】本発明の請求項１に係わるウエット塗膜
管理方法によれば、被塗装物のメタリック塗装におい
て、ウエット塗膜中の塗着ＮＶを測定し、その測定結果
に基づいて空気調整、塗料調整および塗装機の塗装条件
調整のうちの少なくとも１つを行うことにより、塗装の
良否を左右するウエット塗膜中の塗着ＮＶおよびシンナ
ー残存量が適切な範囲内となるようにリアルタイムで管
理することができると共に、この管理によって塗装不良
の発生を最小限あるいは防止することができ、とくに、
被塗装物に順次自動塗装を行う塗装ラインに有用であっ
て、年間を通じて常に安定した塗装外観品質を得ること
ができる。According to the wet coating film management method of the first aspect of the present invention, the coating NV in the wet coating film is measured in the metallic coating of the object to be coated, and the air is adjusted based on the measurement result. By adjusting at least one of the paint adjustment and the paint condition adjustment of the painting machine, the amount of coating NV and thinner remaining in the wet coating film, which influences the quality of the coating, can be adjusted in real time in real time. In addition to being able to manage, this management can minimize or prevent the occurrence of coating defects.
It is useful for a coating line that automatically coats objects to be coated one after another, and it is possible to always obtain a stable coating appearance quality throughout the year.
【００２９】また、空気調整および塗料調整だけでなく
塗装機の塗装条件調整をも行うことから、空気の温湿度
の調整や塗料の温度調整が調整装置の能力限界により塗
着ＮＶの管理が困難になった場合でも、塗装機の塗装条
件調整によって塗着ＮＶの管理に対処することができ
る。したがって、大容量の冷凍機を含む調整装置を用い
なくても塗着ＮＶの管理が可能になり、調整装置の小型
化を図ることができ、これにより省エネルギや低コスト
化などにも貢献することができる。Further, not only the air adjustment and the paint adjustment but also the painting condition adjustment of the painting machine is performed, so that the adjustment of the temperature and humidity of the air and the temperature of the paint are difficult to control the coating NV due to the capacity limit of the adjusting device. Even in the case of, the control of the coating NV can be dealt with by adjusting the coating conditions of the coating machine. Therefore, the coating NV can be managed without using an adjusting device including a large-capacity refrigerator, and the adjusting device can be downsized, which contributes to energy saving and cost reduction. be able to.
【００３０】本発明の請求項２に係わるウエット塗膜管
理方法によれば、請求項１と同様の効果を得ることがで
きるうえに、水系塗料を用いたメタリック塗装におい
て、ウエット塗膜中の塗着ＮＶおよび水分量を速やかに
改善することができ、とくに、塗着ＮＶの測定結果が塗
装の次工程であるウエット塗膜中の水分量調整にフィー
ドバックすることにより、塗装中の被塗装物への対応が
成されることとなって、塗装不良を未然に防止すること
ができる。According to the wet coating film management method of claim 2 of the present invention, the same effect as that of claim 1 can be obtained, and in the metallic coating using the water-based coating material, the coating in the wet coating film is applied. The coating NV and the water content can be improved promptly. Especially, by feeding back the measurement result of the coating NV to the water content adjustment in the wet coating film which is the next step of the coating, it is possible to improve the coating object to be coated. Therefore, it is possible to prevent coating defects from occurring.
【００３１】本発明の請求項３に係わるウエット塗膜管
理方法によれば、請求項１および２と同様の効果を得る
ことができるうえに、ウエット・オン・ウエット塗装に
おいて、ウエット塗膜中の塗着ＮＶおよびシンナー残存
量あるいは水分量を速やかに改善することができ、とく
に、塗着ＮＶの測定結果が一次塗装の次工程である二次
塗装にフィードバックすることにより、塗装中の被塗装
物への対応が成されることとなって、塗装不良を未然に
防止することができる。According to the wet coating film management method of the third aspect of the present invention, the same effects as those of the first and second aspects can be obtained, and in the wet-on-wet coating, the wet coating film in The coating NV and the residual amount of thinner or the amount of water can be promptly improved, and in particular, by feeding back the measurement result of the coating NV to the secondary coating which is the next process of the primary coating, the coated object being coated. As a result, it is possible to prevent poor coating from occurring.
【００３２】本発明の請求項４に係わる塗装装置によれ
ば、被塗装物のメタリック塗装において、塗着ＮＶ測定
手段によりウエット塗膜中の塗着ＮＶを測定し、その測
定結果に基づいて空気調整手段、塗料調整手段および塗
装機の塗装条件調整手段を選択的に制御することによ
り、塗装の良否を左右するウエット塗膜中の塗着ＮＶお
よびシンナー残存量が適切な範囲内となるようにリアル
タイムで管理することができると共に、この管理によっ
て塗装不良の発生を最小限あるいは防止することがで
き、とくに、被塗装物に順次自動塗装を行う塗装ライン
に有用であって、年間を通じて常に安定した塗装外観品
質を得ることができる。According to the coating apparatus of the fourth aspect of the present invention, in the metallic coating of the object to be coated, the coating NV in the wet coating film is measured by the coating NV measuring means, and the air based on the measurement result is measured. By selectively controlling the adjusting means, the paint adjusting means, and the coating condition adjusting means of the coating machine, the coating NV and the residual amount of thinner in the wet coating film, which influence the quality of the coating, are within appropriate ranges. In addition to being able to manage in real time, this management can minimize or prevent the occurrence of coating defects, and is particularly useful for a coating line that sequentially and automatically coats an object to be coated, which is stable throughout the year. The paint appearance quality can be obtained.
【００３３】また、空気調整手段および塗料調整手段だ
けでなく塗装機の塗装条件調整手段をも制御することか
ら、空気調整手段や塗料調整手段の能力限界により塗着
ＮＶの管理が困難になった場合でも、塗装条件調整手段
の制御によって塗着ＮＶの管理に対処することができ
る。したがって、大容量の冷凍機を含む空気調整手段や
塗料調整手段を用いなくても塗着ＮＶの管理が可能にな
り、各手段の小型化を実現することができ、これにより
省エネルギや低コスト化などにも貢献することができ
る。Further, since not only the air adjusting means and the paint adjusting means but also the painting condition adjusting means of the painting machine are controlled, it becomes difficult to control the coating NV due to the limited capacity of the air adjusting means and the paint adjusting means. Even in such a case, the control of the coating condition adjusting means can deal with the management of the coating NV. Therefore, it is possible to manage the coating NV without using an air adjusting means or a paint adjusting means including a large capacity refrigerator, and it is possible to realize miniaturization of each means, thereby saving energy and reducing costs. It can also contribute to commercialization.
【００３４】本発明の請求項５に係わる塗装装置によれ
ば、請求項４と同様の効果を得ることができるうえに、
水系塗料を用いたメタリック塗装において、ウエット塗
膜中の塗着ＮＶおよび水分量を速やかに改善することが
でき、とくに、塗着ＮＶの測定結果が塗装の次工程であ
るフラッシュオフ手段にフィードバックすることによ
り、塗装中の被塗装物への対応が成されることとなっ
て、塗装不良を未然に防止することができる。According to the coating apparatus of claim 5 of the present invention, the same effect as that of claim 4 can be obtained, and
In metallic coating using a water-based paint, the coating NV and water content in the wet coating film can be promptly improved, and in particular, the measurement result of the coating NV is fed back to the flash-off means which is the next step of coating. As a result, it is possible to deal with the object to be coated during painting, and it is possible to prevent poor painting.
【００３５】本発明の請求項６に係わる塗装装置によれ
ば、請求項４および５と同様の効果を得ることができる
うえに、ウエット・オン・ウエット塗装において、ウエ
ット塗膜中の塗着ＮＶおよびシンナー残存量あるいは水
分量を速やかに改善することができ、とくに、塗着ＮＶ
の測定結果が一次塗装機の次工程である二次塗装機にフ
ィードバックすることにより、塗装中の被塗装物への対
応が成されることとなって、塗装不良を未然に防止する
ことができる。According to the coating apparatus of claim 6 of the present invention, the same effects as those of claims 4 and 5 can be obtained, and in the wet-on-wet coating, the coating NV in the wet coating film is obtained. And the residual amount of thinner or the amount of water can be promptly improved.
By feeding back the measurement result of 2 to the secondary coating machine, which is the next process of the primary coating machine, it is possible to deal with the object being coated and prevent defective coating. .
【００３６】[0036]
【実施例】以下、図面に基づいて、本発明に係わるウエ
ット塗膜管理方法およびそれを用いた塗装装置の一実施
例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a wet coating film management method and a coating apparatus using the same according to the present invention will be described below with reference to the drawings.
【００３７】図１に示す塗装装置は、被塗装物である自
動車のボディＢに対して、シンナーを含む溶剤系塗料に
よりメタリック塗装を行うものであって、ベース用自動
塗装機１と、クリア用自動塗装機２を備えている。各自
動塗装機１，２は、静電塗装機であり、ボディＢの上面
に対応する塗装ガン１Ａ，２Ａと側面に対応する塗装ガ
ン１Ｂ，２Ｂを備えている。これらの塗装ガン１Ａ，２
Ａ，１Ｂ，２Ｂは、高速回転するカップにより塗料を霧
化するいわゆるベルガンである。そして、ボディＢを台
車１００で搬送しながらベース塗装（上塗り塗装）およ
びクリア塗装を順に行い、その後、ボディＢを乾燥炉に
搬送する。The coating apparatus shown in FIG. 1 performs metallic coating on a vehicle body B, which is an object to be coated, with a solvent-based paint containing a thinner. It is equipped with an automatic coating machine 2. Each of the automatic coating machines 1 and 2 is an electrostatic coating machine and is provided with coating guns 1A and 2A corresponding to the upper surface of the body B and coating guns 1B and 2B corresponding to the side surfaces. These painting guns 1A, 2
A, 1B, and 2B are so-called bell guns that atomize the paint by a cup that rotates at a high speed. Then, while the body B is being transported by the carriage 100, base coating (top coating) and clear coating are sequentially performed, and then the body B is transported to the drying furnace.
【００３８】また、ベース用自動塗装機１とクリア用自
動塗装機２の間には、多軸制御式のロボット３が設置し
てあり、ロボット３に、ベース塗装を終えたボディＢの
ウエット塗膜中の非揮発性成分（塗着ＮＶ）を測定する
塗着ＮＶ測定装置（塗着ＮＶ測定手段）４が設けてあ
る。この塗着ＮＶ測定装置４には、本出願人が先に出願
した特願２００１−１６８６８３の塗装品質解析装置を
用いることができる。A multi-axis control type robot 3 is installed between the base automatic coating machine 1 and the clear automatic coating machine 2, and the robot 3 is wet coated on the body B after the base coating. A coating NV measuring device (coating NV measuring means) 4 for measuring a non-volatile component (coating NV) in the film is provided. As the coating NV measuring device 4, the coating quality analyzing device of Japanese Patent Application No. 2001-168683 previously filed by the present applicant can be used.
【００３９】塗着ＮＶ測定装置４は、図２に示すよう
に、反射光検出手段１１と、信号増幅手段１２と、塗装
情報入力手段１３と、非吸収波長光電圧測定手段１４
と、シンナー吸収波長光電圧測定手段１５と、ウエット
膜厚算出手段１６と、シンナー溶剤成分量算出手段１７
と、非揮発成分量算出手段１８と、シンナー基準波長光
電圧測定手段１９と、計測開始信号発生手段２０を備え
ている。As shown in FIG. 2, the coating NV measuring device 4 includes a reflected light detecting means 11, a signal amplifying means 12, a coating information inputting means 13, and a non-absorption wavelength optical voltage measuring means 14.
, Thinner absorption wavelength photovoltage measuring means 15, wet film thickness calculating means 16, thinner solvent component amount calculating means 17
A non-volatile component amount calculating means 18, a thinner reference wavelength optical voltage measuring means 19, and a measurement start signal generating means 20.
【００４０】反射光検出手段１１は、塗布直後における
ウエット状態の塗膜面に赤外光を含む光を照射して塗膜
面で反射した反射光を受光するものであって、この際、
塗料のシンナー溶剤成分および樹脂成分（非揮発性成
分）に吸収され易い波長成分の光と、シンナー溶剤成分
または樹脂成分に吸収され難い波長成分の光とを塗膜面
に連続的に照射し、塗膜面からの反射光の中から塗料の
シンナー溶剤成分および樹脂成分に吸収され易い波長成
分の光量と、塗料のシンナー溶剤成分または樹脂成分に
吸収され難い波長成分の光量とを連続的に測定するもの
となっている。The reflected light detecting means 11 irradiates the wet coating surface immediately after coating with light including infrared light and receives the reflected light reflected by the coating surface.
Light of a wavelength component that is easily absorbed by the thinner solvent component and resin component (non-volatile component) of the paint, and light of a wavelength component that is difficult to be absorbed by the thinner solvent component or the resin component are continuously applied to the coating surface, Continuously measures the amount of light of the wavelength component that is easily absorbed by the paint thinner solvent component and resin component and the amount of wavelength component that is difficult to be absorbed by the paint thinner solvent component or resin component from the reflected light from the coating surface It is supposed to do.
【００４１】信号増幅手段１２は、反射光検出手段１１
から入力した微小な電圧信号を増幅し、吸収波長の光量
および非吸収波長の光量に対応する各種の電気信号情報
を出力する。塗装情報入力手段１３には、塗装する前の
塗料の種類や塗布後から非揮発成分量の計測に至るまで
の経過時間が入力される。The signal amplifying means 12 is the reflected light detecting means 11
The minute voltage signal input from the amplifier is amplified, and various electric signal information corresponding to the light amount of the absorption wavelength and the light amount of the non-absorption wavelength is output. To the coating information input means 13, the type of coating material before coating and the elapsed time from the application to the measurement of the amount of non-volatile components are input.
【００４２】非吸収波長光電圧測定手段１４は、信号増
幅手段１２からの各種電気信号情報から塗料のシンナー
溶剤成分または樹脂成分に吸収され難い波長成分の電圧
信号情報を取り出す。また、シンナー吸収波長光電圧測
定手段１５は、信号増幅手段１２からの各種電気信号情
報から塗料のシンナー溶剤成分に吸収され易い波長成分
の電圧信号情報を取り出す。The non-absorption wavelength optical voltage measuring means 14 extracts the voltage signal information of the wavelength component which is difficult to be absorbed by the thinner solvent component or the resin component of the paint from the various electric signal information from the signal amplifying means 12. Further, the thinner absorption wavelength optical voltage measuring means 15 extracts the voltage signal information of the wavelength component which is easily absorbed by the thinner solvent component of the paint from the various electric signal information from the signal amplifying means 12.
【００４３】ウエット膜厚算出手段１６は、非吸収波長
電圧測定手段１４からの電圧信号情報と塗装情報入力手
段１３からの塗料種情報および経過時間とに基づいて塗
布後のウエット塗膜厚を算出する。シンナー溶剤成分量
算出手段１７は、シンナー吸収波長電圧出力手段１５か
らの電圧信号情報と塗装情報入力手段１３からの塗料種
情報とウエット膜厚算出手段１６からの膜厚情報に基づ
いてシンナー溶剤成分の濃度（シンナー残存量）を算出
する。非揮発成分量算出手段１８は、シンナー溶剤成分
量算出手段１７からのシンナー溶剤成分の濃度情報から
塗着ＮＶを算出する。The wet film thickness calculating means 16 calculates the wet coating film thickness after coating based on the voltage signal information from the non-absorption wavelength voltage measuring means 14, the paint type information from the coating information input means 13 and the elapsed time. To do. The thinner solvent component amount calculation means 17 is based on the voltage signal information from the thinner absorption wavelength voltage output means 15, the paint type information from the coating information input means 13 and the film thickness information from the wet film thickness calculation means 16 and calculates the thinner solvent component. The concentration (residual amount of thinner) is calculated. The non-volatile component amount calculating means 18 calculates the coating NV from the concentration information of the thinner solvent component from the thinner solvent component amount calculating means 17.
【００４４】シンナー基準波長光電圧測定手段１９は、
シンナー溶剤成分の吸収波長電圧を算出するために基準
とする値を測定する手段であって、シンナー溶剤成分吸
収波長により近い非吸収波長電圧を測定する。The thinner reference wavelength optical voltage measuring means 19 is
It is a means for measuring a reference value for calculating the absorption wavelength voltage of the thinner solvent component, and measures the non-absorption wavelength voltage closer to the absorption wavelength of the thinner solvent component.
【００４５】計測開始信号発生手段２０は、例えば計測
エリアに移動してきたボディＢを検出するセンサであっ
て、ボディＢを検出した時点で信号増幅手段１２に対し
て計測開始信号を発生する。なお、この種のセンサを計
測エリアに加えて塗装エリアにも設ければ、各センサの
位置検出信号と予め設定されているボディＢの移動速度
とから、塗布後の経過時間を検出することができ、この
ようにして得た経過時間を塗装情報入力手段１３に入力
するようにしても良い。The measurement start signal generating means 20 is, for example, a sensor for detecting the body B that has moved to the measurement area, and generates a measurement start signal to the signal amplifying means 12 when the body B is detected. If this type of sensor is provided in the coating area in addition to the measurement area, the elapsed time after application can be detected from the position detection signals of the sensors and the preset moving speed of the body B. Alternatively, the elapsed time thus obtained may be input to the coating information input means 13.
【００４６】上記構成の塗着ＮＶ測定装置４は、赤外線
の特定吸収波長域および非吸収波長域の光反射を測定
し、非吸収波長域の光反射とアルミニウム粉の配列の経
時的な変化を考慮した膜厚算出アルゴリズムにより塗布
直後の塗膜厚を算出し、その塗膜厚とシンナー溶剤成分
の吸収波長域の光反射または吸収光度からシンナー溶剤
成分の濃度を算出することにより、塗着ＮＶを非接触で
且つ短時間で連続的に計測する。つまり、自動化された
塗装ラインにおいても塗着ＮＶや塗膜厚およびシンナー
残存量をリアルタイムで計測し得るものである。The coating NV measuring device 4 having the above-mentioned configuration measures the light reflection in the specific absorption wavelength region and the non-absorption wavelength region of infrared rays, and changes the light reflection in the non-absorption wavelength region and the change of the arrangement of the aluminum powder with time. The coating thickness immediately after coating is calculated by a film thickness calculation algorithm that takes into consideration, and the concentration of the thinner solvent component is calculated by calculating the concentration of the thinner solvent component from the thickness of the coating film and the light reflection or absorption intensity in the absorption wavelength range of the thinner solvent component. Is continuously measured in a short time without contact. That is, the coating NV, the coating thickness, and the residual amount of thinner can be measured in real time even in an automated coating line.
【００４７】さらに、当該塗装装置は、塗装ブース内の
温度、湿度、調整空気の風速および風向といった空気調
整を行う空気調整装置（空気調整手段）５と、各塗装機
１，２に供給する塗料の温度や成分を調整する塗料調整
装置（塗料調整手段）６と、ベース用自動塗装機１の塗
装条件として塗装ガン１Ａ，１Ｂのカップの回転数を調
整する塗装条件調整装置（塗装条件調整手段）７と、塗
着ＮＶ測定装置４の測定結果に基づいて空気調整装置
５、塗料調整装置６および塗装条件調整装置７を選択的
に制御する主制御装置（主制御手段）８を備えている。
なお、クリア用自動塗装機２に対しても塗装条件調整装
置を設け、この塗装条件調整装置も主制御手段８で制御
するようにしても良い。Further, the coating apparatus is provided with an air adjusting apparatus (air adjusting means) 5 for adjusting the temperature, humidity, air speed and direction of the adjusted air in the coating booth, and a paint supplied to each of the coating machines 1 and 2. Paint adjusting device (paint adjusting device) 6 for adjusting the temperature and components of the paint, and a paint condition adjusting device (paint condition adjusting device) for adjusting the number of rotations of the cups of the coating guns 1A and 1B as the coating condition of the base automatic coating machine 1. ) 7 and a main controller (main controller) 8 for selectively controlling the air conditioner 5, the paint conditioner 6 and the paint condition conditioner 7 based on the measurement result of the coating NV measuring device 4. .
A coating condition adjusting device may be provided for the clear automatic coating machine 2 and the coating condition adjusting device may also be controlled by the main control means 8.
【００４８】上記構成を備えた塗装装置は、空気調整装
置５により、塗装ブース内の温度が２０℃程度で、湿度
が６０〜７０％程度となるように調整して塗装を行う。
そして、ベース用自動塗装機１でボディＢに塗装をした
後、そのウエット状態の塗膜に対して塗着ＮＶ測定装置
４で塗着ＮＶを測定する。In the coating apparatus having the above structure, the air conditioning apparatus 5 adjusts the temperature in the coating booth to about 20 ° C. and adjusts the humidity to about 60 to 70% for coating.
Then, after coating the body B by the base automatic coating machine 1, the coating NV measuring device 4 measures the coating NV of the wet coating film.
【００４９】ここで、メタリック塗装では、塗料にアル
ミニウム粉が混合してあって、塗膜形成時におけるアル
ミニウム粉の配列が塗装品質に影響を与えると共に、こ
のアルミニウム粉の配列が塗膜中で経時的に変化するシ
ンナー残存量により左右される。したがって、塗装後か
ら所定時間が経過した時点での塗着ＮＶ（非揮発性成
分）を管理すれば、同時にシンナー（揮発性成分）残存
量の管理が成されることとなり、これによりアルミニウ
ム粉の配列を良好にして、良好な塗装品質を得ることが
できる。Here, in metallic coating, aluminum powder is mixed in the paint, and the arrangement of the aluminum powder at the time of forming the coating film affects the coating quality, and the arrangement of the aluminum powder in the coating film changes with time. It depends on the residual amount of thinner that changes. Therefore, if the coating NV (non-volatile component) at the time when a predetermined time has elapsed after coating is controlled, the thinner (volatile component) residual amount is also controlled at the same time. Good alignment can be obtained with good coating quality.
【００５０】また、塗着ＮＶは、図３（ａ）に示す如く
適正範囲が設定してあり、時間経過に伴ってシンナー残
存量が減少することにより値が上昇する。この塗着ＮＶ
は、塗装ブース内の空気環境、塗料の条件および塗装機
の塗装条件によって変化するが、諸条件との関係は予め
実験的に求めておくことができる。Further, the coating NV has an appropriate range set as shown in FIG. 3A, and the value increases as the residual amount of thinner decreases with the passage of time. This coating NV
Varies depending on the air environment in the coating booth, the coating conditions and the coating conditions of the coating machine, but the relationship with various conditions can be experimentally obtained in advance.
【００５１】そこで、当該塗装装置およびウエット塗膜
管理方法では、そして、主制御装置８により、塗着ＮＶ
の測定結果に基づいて空気調整装置５、塗料調整装置６
および塗装条件調整装置７を選択的に制御する。Therefore, in the coating apparatus and the wet coating film management method, the main controller 8 controls the coating NV.
Air adjustment device 5, paint adjustment device 6 based on the measurement results of
And the coating condition adjusting device 7 is selectively controlled.
【００５２】すなわち、塗着ＮＶの測定結果が所定の管
理範囲内にあるか否かを判断し、塗着ＮＶが図３（ａ）
中の点ａで示すように適正範囲内にあるときには、その
制御状態を維持し、塗着ＮＶが図３（ｂ）中の点ｂで示
すように適正範囲外にあるときには、空気調整装置５に
より、温度、湿度、調整空気の風速および風向を調整
し、あるいは塗料調整装置６により、塗料の温度等を調
整する。これにより、塗着ＮＶが適正範囲となるように
管理されることとなる。That is, it is judged whether or not the measurement result of the coating NV is within a predetermined control range, and the coating NV is shown in FIG.
When it is within the proper range as indicated by a point a in the inside, the control state is maintained, and when the coating NV is outside the proper range as indicated by a point b in FIG. 3B, the air conditioner 5 To adjust the temperature, humidity, and the wind speed and direction of the adjusted air, or the paint adjusting device 6 to adjust the temperature and the like of the paint. As a result, the coating NV is managed within the proper range.
【００５３】また、塗装ブース内の空気環境が正常であ
るにも係わらず塗着ＮＶが適正範囲外である場合は、そ
の原因はシンナー配合比率の変動であると考えられるの
で、自動塗装機１の塗装条件調整装置７を制御する。さ
らに、空気調整装置５および塗料調整装置６が能力限界
の状態であると共に、塗着ＮＶが適正範囲外である場合
にも、自動塗装機１の塗装条件調整装置７を制御する。If the coating NV is out of the proper range even though the air environment in the coating booth is normal, it is considered that the cause is the variation of the thinner blending ratio. Therefore, the automatic coating machine 1 The coating condition adjusting device 7 is controlled. Further, even when the air adjusting device 5 and the paint adjusting device 6 are in the capacity limit state and the coating NV is out of the proper range, the coating condition adjusting device 7 of the automatic coating machine 1 is controlled.
【００５４】この場合、塗装条件調整装置７は、図３
（ｂ）に示すように、塗装ガン（ベルガン）１Ａ，１Ｂ
のカップの回転数により塗着ＮＶが変化することから、
カップの回転数を制御する。これにより、塗着ＮＶが適
正範囲となるように管理されることとなる。In this case, the coating condition adjusting device 7 is shown in FIG.
As shown in (b), painting guns (bell gun) 1A, 1B
Since the coating NV changes depending on the rotation speed of the cup of
Controls the speed of rotation of the cup. As a result, the coating NV is managed within the proper range.
【００５５】このように、上記実施例の塗装装置および
ウエット塗膜管理方法では、塗着ＮＶ測定装置４で塗着
ＮＶを測定し、その測定結果を主制御装置８から各装置
５〜７にフィードバックすることから、塗装ラインにお
いて、塗装の良否を左右するウエット塗膜中の塗着ＮＶ
およびシンナー残存量が適切な範囲内となるようにリア
ルタイムで管理することができ、この管理によって塗装
不良の発生を最小限あるいは防止し、常に安定した塗装
外観品質を得ることができる。As described above, in the coating apparatus and the wet coating film management method of the above-mentioned embodiment, the coating NV measuring apparatus 4 measures the coating NV, and the measurement result is transferred from the main controller 8 to the respective apparatuses 5 to 7. Because of feedback, the coating NV in the wet coating film that determines the quality of the coating on the coating line
In addition, the residual amount of thinner can be controlled in real time so as to be within an appropriate range. By this control, the occurrence of coating defects can be minimized or prevented, and stable coating appearance quality can always be obtained.
【００５６】また、当該塗装装置およびウエット塗膜管
理方法では、空気調整装置５や塗料調整装置６だけでな
く自動塗装機１の塗装条件調整装置７をも制御すること
から、空気調整装置５や塗料調整装置６の能力限界によ
り塗着ＮＶの管理が困難になった場合でも、塗装条件調
整装置７を制御して塗着ＮＶの管理に対処する。したが
って、大容量の冷凍機を含む空気調整装置や塗料調整装
置を用いなくても塗着ＮＶの管理が可能になり、各装置
を小型化して省エネルギや低コスト化などに貢献し得る
ものとなる。Further, in the coating apparatus and the wet coating film management method, not only the air adjusting apparatus 5 and the paint adjusting apparatus 6 but also the coating condition adjusting apparatus 7 of the automatic coating machine 1 are controlled. Even if it becomes difficult to manage the coating NV due to the limited capacity of the paint adjusting device 6, the coating condition adjusting device 7 is controlled to handle the management of the coating NV. Therefore, it is possible to manage the coating NV without using an air conditioner including a large capacity refrigerator or a paint conditioner, which can contribute to energy saving and cost reduction by downsizing each device. Become.
【００５７】次に、自動車のボディＢのメタリック塗装
では、水系塗料の採用も進められており、この水系塗料
を使用する場合には、図１中に仮想線で示すように、塗
着ＮＶ測定装置４とクリア用自動塗装機２との間に、フ
ラッシュオフ装置（フラッシュオフ手段）９が設置され
る。このフラッシュオフ装置９は、赤外線加熱あるいは
エアブローによってウエット塗膜中の水分を蒸発させ、
ウエット塗膜中の水分量を調整するものである。Next, in the metallic coating of the body B of the automobile, the use of a water-based paint is being promoted. When this water-based paint is used, as shown by the phantom line in FIG. A flash-off device (flash-off means) 9 is installed between the device 4 and the clear automatic coating machine 2. The flash-off device 9 evaporates the water content in the wet coating film by infrared heating or air blow,
The amount of water in the wet coating film is adjusted.
【００５８】また、先に説明したように、溶剤系塗料に
おいてウエット塗膜中のシンナー残存量がアルミニウム
粉の配列を左右するのと同様に、水系塗料においてはウ
エット塗膜中の水分量がアルミニウム粉の配列を左右す
る。Further, as described above, in the same manner as in the solvent-based paint, the residual amount of thinner in the wet coating film determines the arrangement of the aluminum powder, and in the water-based coating film, the water content in the wet coating film is Controls the arrangement of powder.
【００５９】そこで、当該塗装装置およびウエット塗膜
管理方法では、塗着ＮＶの測定結果に基づいて空気調整
装置５、塗料調整装置６あるいは塗装条件調整装置７の
選択制御を優先的に行い、それでも塗着ＮＶが適正範囲
外である場合には、主制御装置８でフラッシュオフ装置
９の制御部９Ａを制御することにより、ウエット塗膜中
の水分量を調整して塗着ＮＶが管理範囲内になるように
する。このように、塗着ＮＶの測定結果を塗装の次工程
であるフラッシュオフ装置９の制御部９Ａにフィードバ
ックすれば、塗装中のボディＢへの対応が速やかに成さ
れ、塗装不良を未然に防止することができる。Therefore, in the coating apparatus and the wet coating film management method, selection control of the air adjusting apparatus 5, the paint adjusting apparatus 6 or the coating condition adjusting apparatus 7 is preferentially performed on the basis of the measurement result of the coating NV, and nonetheless. When the coating NV is out of the appropriate range, the main controller 8 controls the controller 9A of the flash-off device 9 to adjust the amount of water in the wet coating film so that the coating NV is within the control range. Try to be. In this way, if the measurement result of the coating NV is fed back to the control unit 9A of the flash-off device 9 which is the next process of coating, the body B being coated can be promptly dealt with to prevent coating defects. can do.
【００６０】図４は、本発明に係わるウエット塗膜管理
方法および塗装装置の他の実施例を説明する図である。
なお、先の実施例と同一の構成部位は、同一符号を付し
て詳細な説明を省略する。FIG. 4 is a diagram for explaining another embodiment of the wet coating film management method and coating apparatus according to the present invention.
The same components as those in the previous embodiment are designated by the same reference numerals, and detailed description will be omitted.
【００６１】図示の塗装装置は、一次塗装に続いて二次
塗装を行うウエット・オン・ウエット塗装に用いるもの
であって、塗装機として、一次塗装機である中塗り用自
動塗装機２１と、二次塗装機であるベース用自動塗装機
２２を備えており、夫々の自動塗装機２１，２２の次工
程に、ロボット３とともに第１塗着ＮＶ測定装置３１お
よび第２塗着ＮＶ測定装置３２を備えている。各自動塗
装機２１，２２は、先の実施例と同様に、ボディＢの上
面に対応する塗装ガン（ベルガン）２１Ａ，２２Ａと、
ボディＢの側面に対応する塗装ガン（ベルガン）２１
Ｂ，２２Ｂを備えると共に、これらの塗装ガン２１Ａ，
２１Ｂ，２２Ａ，２２Ｂのカップの回転数を調整する塗
装条件調整装置２３，２４を備えている。The illustrated coating apparatus is used for wet-on-wet coating in which primary coating is followed by secondary coating. As coating machines, an automatic intermediate coating machine 21 for intermediate coating, which is a primary coating machine, The base automatic coating machine 22 which is a secondary coating machine is provided, and the first coating NV measuring device 31 and the second coating NV measuring device 32 together with the robot 3 are provided in the next process of the respective automatic coating machines 21 and 22. Is equipped with. Each of the automatic coating machines 21 and 22 has coating guns (bell guns) 21A and 22A corresponding to the upper surface of the body B, as in the previous embodiment.
Painting gun (bell gun) 21 corresponding to the side of body B
B and 22B, and these coating guns 21A,
It is provided with coating condition adjusting devices 23 and 24 for adjusting the number of rotations of the cups 21B, 22A and 22B.
【００６２】上記の塗装装置にあっても、先の実施例と
同様に、第１および第２の塗着ＮＶ測定装置３１，３２
でボディＢのウエット塗膜中の塗着ＮＶを測定し、主制
御装置８により、塗着ＮＶの測定結果に基づいて空気調
整装置５、塗料調整装置６および各塗装条件調整装置２
３，２４を選択的に制御し、これによりウエット塗膜中
の塗着ＮＶおよびシンナー残存量が所定の管理範囲内に
なるようにする。Even in the above coating apparatus, the first and second coating NV measuring apparatuses 31 and 32 are the same as in the previous embodiment.
The coating NV in the wet coating film of the body B is measured by the main controller 8, and the main controller 8 determines the air-adjusting device 5, the paint adjusting device 6, and each coating condition adjusting device 2 based on the measurement result of the coating NV.
3, 24 are selectively controlled so that the coating NV and the residual amount of thinner in the wet coating film fall within a predetermined control range.
【００６３】この場合、とくに、一次塗装されたボディ
Ｂのウエット塗膜に対して第１塗着ＮＶ測定装置３１で
塗着ＮＶを測定し、その測定結果を二次塗装を行うベー
ス用自動塗装機２２の塗装条件調整装置２４にフィード
バックするので、塗装中のボディＢへの対応が速やかに
成され、塗装不良を未然に防止することができる。In this case, in particular, with respect to the wet coating film of the body B which has been subjected to the primary coating, the coating NV is measured by the first coating NV measuring device 31, and the measurement result is subjected to the secondary coating. Since the feedback is made to the coating condition adjusting device 24 of the machine 22, it is possible to quickly respond to the body B during coating, and it is possible to prevent coating failure in advance.
【００６４】また、上記塗装装置は、水系塗料の使用に
対処する場合には、第１および第２の塗着ＮＶ測定装置
３１，３２の次工程に、フラッシュオフ装置２５，２６
を設置する。そして、第１および第２の塗着ＮＶ測定装
置３１，３２による塗着ＮＶの測定結果に基づいて、主
制御装置８により、空気調整装置５、塗料調整装置６お
よび各塗装条件調整装置２３，２４を選択的に制御し、
さらに、フラッシュオフ装置２５，２６の制御部２５
Ａ，２６Ａを制御することにより、ウエット塗膜中の塗
着ＮＶおよび水分量が所定の管理範囲内になるようにす
る。Further, in the case of dealing with the use of water-based paint, the above-mentioned coating device is equipped with flash-off devices 25 and 26 in the next step of the first and second coating NV measuring devices 31 and 32.
Set up. Then, based on the measurement results of the coating NV by the first and second coating NV measuring devices 31, 32, the main controller 8 causes the air adjusting device 5, the paint adjusting device 6, and the respective coating condition adjusting devices 23, Selectively control 24,
Furthermore, the control unit 25 of the flash-off devices 25 and 26
By controlling A and 26A, the coating NV and the amount of water in the wet coating film are controlled to fall within a predetermined control range.
【００６５】この場合においても、一次塗装および二次
塗装の各塗着ＮＶの測定結果を各塗装の次工程であるフ
ラッシュオフ装置２５，２６の制御部２５Ａ，２６Ａに
フィードバックするので、塗装中のボディＢへの対応が
速やかに成され、塗装不良を未然に防止し得るものとな
る。Even in this case, the measurement results of the coating NVs of the primary coating and the secondary coating are fed back to the control units 25A and 26A of the flash-off devices 25 and 26, which are the next steps of the coating, so that the coating during the coating is completed. Correspondence to the body B is promptly performed, and defective coating can be prevented.
【００６６】なお、上記したようなウエット・オン・ウ
エット塗装には、溶剤系塗料と水系塗料の両方が使用可
能であり、例えば、生産上の都合等によって溶剤系塗料
を水系塗料に切り替えていくような事態も想定される。
この場合、溶剤系塗料と水系塗料の使用が混在すること
もあるが、このような切り替え過渡期においても、当該
ウエット塗膜管理方法および塗装装置は、ウエット塗膜
中の塗着ＮＶやシンナー残存量あるいは水分量をリアル
タイムで管理することができ、季節による外気温度の変
化等の影響を受けることなく、常に安定した塗装外観品
質を得ることができる。For the wet-on-wet coating described above, both solvent-based paints and water-based paints can be used. For example, the solvent-based paints are switched to water-based paints due to production reasons. Such a situation is also possible.
In this case, the use of solvent-based paint and water-based paint may be mixed, but even in such a transitional transition period, the wet coating film management method and the coating device are such that the coating NV or thinner remains in the wet coating film. The amount of water or the amount of water can be controlled in real time, and a stable coating appearance quality can always be obtained without being affected by changes in the outside air temperature depending on the season.
【図１】本発明に係わる塗装装置の一実施例を説明する
概略的な側面図（ａ）および平面図（ｂ）である。FIG. 1 is a schematic side view (a) and a plan view (b) illustrating an embodiment of a coating apparatus according to the present invention.
【図２】塗着ＮＶ測定装置を説明するブロック図であ
る。FIG. 2 is a block diagram illustrating a coating NV measuring device.
【図３】塗装後の時間経過に伴う塗着ＮＶの変化の適正
範囲を示すグラフ（ａ）および塗装ガンのカップの回転
数と塗着ＮＶとの関係を示すグラフ（ｂ）である。FIG. 3 is a graph (a) showing an appropriate range of a change in coating NV with the lapse of time after coating, and a graph (b) showing the relationship between the rotation number of the coating gun cup and the coating NV.
【図４】本発明に係わる塗装装置の他の実施例を説明す
る概略的な側面図（ａ）および平面図（ｂ）である。FIG. 4 is a schematic side view (a) and a plan view (b) illustrating another embodiment of the coating apparatus according to the present invention.
【図５】従来における塗装装置を説明する概略的な側面
図（ａ）および平面図（ｂ）である。FIG. 5 is a schematic side view (a) and a plan view (b) illustrating a conventional coating device.
Ｂ ボディ（被塗装物）
１ ベース用自動塗装機
４ 塗着ＮＶ測定装置（塗着ＮＶ測定手段）
５ 空気調整装置（空気調整手段）
６ 塗料調整装置（塗料調整手段）
７ 塗装条件調整装置（塗装条件調整手段）
８ 主制御装置（主制御手段）
９ フラッシュオフ装置（フラッシュオフ手
段）
２１ 中塗り用自動塗装機（一次塗装機）
２２ ベース用自動塗装機（二次塗装機）
２３ ２４ 塗装条件調整装置（塗装条件調整手段）
２５ ２６ フラッシュオフ装置（フラッシュオフ手
段）
３１ 第１塗着ＮＶ測定装置（塗着ＮＶ測定手
段）
３２ 第２塗着ＮＶ測定装置（塗着ＮＶ測定手
段）B body (object to be coated) 1 automatic coating machine for base 4 coating NV measuring device (coating NV measuring means) 5 air adjusting device (air adjusting device) 6 paint adjusting device (paint adjusting device) 7 coating condition adjusting device ( Painting condition adjusting means) 8 Main control device (main control means) 9 Flash-off device (flash-off means) 21 Automatic coating machine for primary coating (primary coating machine) 22 Automatic coating machine for base (secondary coating machine) 23 24 Painting Condition adjusting device (coating condition adjusting means) 25 26 Flash-off device (flash-off means) 31 First coating NV measuring device (coating NV measuring device) 32 Second coating NV measuring device (coating NV measuring device)
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D073 AA01 BB03 DD02 DD18 DD40 4D075 AA76 CA47 DC12 4F035 AA03 BB01 BB15 BB16 BB21 BB35 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 4D073 AA01 BB03 DD02 DD18 DD40 4D075 AA76 CA47 DC12 4F035 AA03 BB01 BB15 BB16 BB21 BB35
Claims (6)
成分が調整された塗料を用いて被塗装物に自動塗装を行
うに際し、塗装後のウエット塗膜中の非揮発性成分を測
定し、その測定結果に基づいて塗装ブース内の空気調
整、塗料調整および塗装機の塗装条件調整のうちの少な
くとも１つを行うことを特徴とするウエット塗膜管理方
法。1. A non-volatile component in a wet coating film after coating is measured when an object to be coated is automatically coated with a coating material whose temperature and components are regulated in an air-conditioned coating booth. A wet coating film management method comprising performing at least one of air adjustment in a coating booth, paint adjustment, and coating condition adjustment of a coating machine based on the measurement result.
ット塗膜中の非揮発性成分の測定結果に基づいて、ウエ
ット塗膜中の水分量を調整することを特徴とする請求項
１に記載のウエット塗膜管理方法。2. The water-based paint is used, and the amount of water in the wet paint is adjusted based on the measurement result of the non-volatile components in the wet paint. Wet coating film management method described.
えており、少なくとも一次塗装後のウエット塗膜中の非
揮発性成分を測定することを特徴とする請求項１または
２に記載のウエット塗膜管理方法。3. The wet according to claim 1, wherein the coating process includes a primary coating and a secondary coating, and at least the non-volatile components in the wet coating film after the primary coating are measured. Coating management method.
成分が調整された塗料を用いて被塗装物に自動塗装を行
う装置であって、塗装ブース内の空気調整を行う空気調
整手段と、塗装機に供給する塗料の温度や成分を調整す
る塗料調整手段と、塗装機の塗装条件を調整する塗装条
件調整手段と、塗装後のウエット塗膜中の非揮発性成分
を測定する塗着ＮＶ測定手段と、塗着ＮＶ測定手段の測
定結果に基づいて空気調整手段、塗料調整手段および塗
装条件調整手段を選択的に制御する主制御手段を備えた
ことを特徴とする塗装装置。4. An apparatus for automatically coating an object to be coated with a paint whose temperature and composition have been adjusted in an air-adjusted coating booth, and an air adjusting means for adjusting the air in the coating booth. Coating means for adjusting the temperature and components of the paint supplied to the coating machine, coating condition adjusting means for adjusting the coating conditions of the coating machine, and coating for measuring non-volatile components in the wet coating film after coating. A coating apparatus comprising: an NV measuring means; and a main control means for selectively controlling the air adjusting means, the paint adjusting means and the coating condition adjusting means based on the measurement result of the coating NV measuring means.
程として、ウエット塗膜中の水分を蒸発させるフラッシ
ュオフ手段を備え、主制御手段が、塗着ＮＶ測定手段の
測定結果に基づいてフラッシュオフ手段を制御する手段
であることを特徴とする請求項４に記載の塗装装置。5. A flash-off means for evaporating the water content in the wet coating film is provided as a next step of the measuring step by the coating NV measuring means, and the main control means flashes based on the measurement result of the coating NV measuring means. The coating apparatus according to claim 4, which is a means for controlling the off means.
えていると共に、塗着ＮＶ測定手段が、少なくとも一次
塗装機による塗装後のウエット塗膜中の非揮発性成分を
測定する手段であることを特徴とする請求項４または５
に記載の塗装装置。6. The coating machine comprises a primary coating machine and a secondary coating machine, and the coating NV measuring means measures at least a non-volatile component in the wet coating film after coating by the primary coating machine. It is a means, The claim 4 or 5 characterized by the above-mentioned.
The coating device described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001354566A JP2003154296A (en) | 2001-11-20 | 2001-11-20 | Method of controlling wet coating film and coating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001354566A JP2003154296A (en) | 2001-11-20 | 2001-11-20 | Method of controlling wet coating film and coating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003154296A true JP2003154296A (en) | 2003-05-27 |
Family
ID=19166407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001354566A Pending JP2003154296A (en) | 2001-11-20 | 2001-11-20 | Method of controlling wet coating film and coating apparatus |
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| Country | Link |
|---|---|
| JP (1) | JP2003154296A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320851A (en) * | 2005-05-19 | 2006-11-30 | Sekisui Chem Co Ltd | Method for forming coating film |
| JP2007196111A (en) * | 2006-01-25 | 2007-08-09 | Nissan Motor Co Ltd | Rotary atomization type coating apparatus and coating method using the same |
| JP2008093533A (en) * | 2006-10-10 | 2008-04-24 | Honda Motor Co Ltd | Coating method |
| JP2008302274A (en) * | 2007-06-06 | 2008-12-18 | Kansai Paint Co Ltd | Method for determining coating nv (non volatile) of water paint and coating method using it |
| JP2010188234A (en) * | 2009-02-16 | 2010-09-02 | Honda Motor Co Ltd | Electrostatic coating apparatus and electrostatic coating method |
-
2001
- 2001-11-20 JP JP2001354566A patent/JP2003154296A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320851A (en) * | 2005-05-19 | 2006-11-30 | Sekisui Chem Co Ltd | Method for forming coating film |
| JP2007196111A (en) * | 2006-01-25 | 2007-08-09 | Nissan Motor Co Ltd | Rotary atomization type coating apparatus and coating method using the same |
| JP2008093533A (en) * | 2006-10-10 | 2008-04-24 | Honda Motor Co Ltd | Coating method |
| JP2008302274A (en) * | 2007-06-06 | 2008-12-18 | Kansai Paint Co Ltd | Method for determining coating nv (non volatile) of water paint and coating method using it |
| JP2010188234A (en) * | 2009-02-16 | 2010-09-02 | Honda Motor Co Ltd | Electrostatic coating apparatus and electrostatic coating method |
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