JPH11221516A - Coating method - Google Patents
Coating methodInfo
- Publication number
- JPH11221516A JPH11221516A JP10027932A JP2793298A JPH11221516A JP H11221516 A JPH11221516 A JP H11221516A JP 10027932 A JP10027932 A JP 10027932A JP 2793298 A JP2793298 A JP 2793298A JP H11221516 A JPH11221516 A JP H11221516A
- Authority
- JP
- Japan
- Prior art keywords
- air
- duct
- coating
- nozzle
- curtain
- 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.)
- Pending
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
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/32—Shielding elements, i.e. elements preventing overspray from reaching areas other than the object to be sprayed
- B05B12/36—Side shields, i.e. shields extending in a direction substantially parallel to the spray jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/30—Arrangements for collecting, re-using or eliminating excess spraying material comprising enclosures close to, or in contact with, the object to be sprayed and surrounding or confining the discharged spray or jet but not the object to be sprayed
-
- 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
- B05B3/1092—Means for supplying shaping gas
Landscapes
- 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、霧化ノズルを使用
して塗料を噴霧する塗装方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method for spraying paint using an atomizing nozzle.
【０００２】[0002]
【従来技術及びその課題】従来より、霧化ノズルを使用
した噴霧塗装は、一般に塗装ブ−ス内で行なわれてお
り、該塗装ブ−ス内は、通常、温湿度を適性に制御する
空調がなされている。これは、ブ−ス内の温度や湿度に
よって噴霧パタ−ン領域での霧化塗料粒子中の揮発成分
の蒸発速度が大きく変化すると、霧化塗料粒子の塗着粘
度が左右され、タレや肌不良等を生じて正常な塗膜を形
成できなくなるためである。2. Description of the Related Art Conventionally, spray coating using an atomizing nozzle is generally performed in a coating bush, and the inside of the coating bush is usually air-conditioned for appropriately controlling temperature and humidity. Has been made. This is because if the evaporation rate of the volatile components in the atomized paint particles in the spray pattern area greatly changes due to the temperature and humidity in the booth, the coating viscosity of the atomized paint particles is affected, and sagging and skin This is because a normal coating film cannot be formed due to defects or the like.
【０００３】また霧化ノズルを使用した噴霧塗装では、
加圧ノズルを使用したエアレス塗装の塗着効率が５０〜
６０％、二流体ノズルを使用したエアスプレ−塗装の塗
着効率が４０〜５０％と、いずれも使用塗料の約半分は
被塗物に塗着しない飛散粒子（スプレ−ダスト）とな
る。塗着効率を高めた静電エアスプレ−や静電エアレス
スプレ−、回転ベル型静電塗装などでも７０〜８０％程
度であり、この２０〜３０％の飛散粒子を処理し、塗料
中に含まれた溶剤による蒸気を排除して、これらを人体
に影響を与えない濃度に維持するために、塗装ブ−スで
は強制給排気が必要である。In spray coating using an atomizing nozzle,
Coating efficiency of airless coating using pressure nozzle is 50 ~
When the coating efficiency of air spray coating using a two-fluid nozzle is 60% and the coating efficiency is 40 to 50%, about half of the paint used is scattered particles (spray dust) that are not applied to an object to be coated. Electrostatic air spray, electrostatic airless spray, and rotating bell type electrostatic coating with improved coating efficiency are about 70 to 80%, and these 20 to 30% of scattered particles are treated and contained in the paint. In order to eliminate vapors caused by the solvent and maintain the concentration at a level that does not affect the human body, the paint booth requires forced air supply and exhaust.
【０００４】従って塗装ブ−ス内では、給排気をしつつ
温湿度を制御するため、塗装ブ−ス全体で空調に消費さ
れるエネルギ−は相当なもので、一般工業用塗装ライン
の工程の中で最大であり、このエネルギ−削減が重要課
題であった。Therefore, since the temperature and humidity are controlled while supplying and exhausting air in the paint bush, the energy consumed for air conditioning in the paint bus as a whole is considerable. Among them, this energy reduction was an important issue.
【０００５】さらに、塗装ブ−スから排気された空気中
に含まれるスプレ−ダストと溶剤蒸気のうち、スプレ−
ダストは気液接触処理工程あるいはドライフィルタ−で
除去され、スプレ−ダストから揮発した溶剤蒸気を含む
排気空気はそのまま大気拡散されるか、或いは次工程の
活性炭吸着処理工程に送られ、溶剤濃度を排出基準以下
にされて大気中に拡散される。Further, of the spray dust and the solvent vapor contained in the air exhausted from the coating bush, the spray
The dust is removed in a gas-liquid contact treatment process or a dry filter, and the exhaust air containing the solvent vapor volatilized from the spray dust is directly diffused into the atmosphere or sent to the next step of activated carbon adsorption treatment to reduce the solvent concentration. It is below the emission standard and diffused into the atmosphere.
【０００６】かかる活性炭吸着処理工程では、溶剤蒸気
の濃度が高い程、吸着効率が高くなることが知られてい
るが、通常、塗装ブ−スの排気空気の濃度は非常に低
く、効率のよい活性炭吸着条件を得ることが困難であっ
た。In the activated carbon adsorption treatment step, it is known that the higher the concentration of the solvent vapor, the higher the adsorption efficiency. However, the concentration of the exhaust air from the coating bush is usually very low and the efficiency is high. It was difficult to obtain activated carbon adsorption conditions.
【０００７】これに対し自動車塗装ブ−スなどでは、給
気する空気中に含まれる溶剤濃度の基準を自動塗装と手
吹き塗装のブ−スで区別して、手吹き塗装のブ−スには
溶剤蒸気などが含まれない清浄空気を給気し、次いでこ
こでの排気空気を自動塗装のブ−スの給気空気とするこ
とで、最終的に処理する排気空気中に含まれる溶剤蒸気
濃度を高めてから活性炭吸着処理を行なう方法も取られ
ているが、不十分であった。On the other hand, in the case of automobile painting booths and the like, the standard of the concentration of the solvent contained in the air to be supplied is distinguished between automatic painting and hand-blown painting. By supplying clean air that does not contain solvent vapor, etc., and then using the exhaust air here as the supply air for automatic painting booths, the concentration of solvent vapor contained in the exhaust air that is finally processed Activated charcoal adsorption treatment is also performed after increasing the carbon content, but it has been insufficient.
【０００８】本発明の目的は、塗装時に必要な空調エネ
ルギ−を削減する塗装方法を提供することであり、さら
には塗着効率が高く、効率の良い排気空気処理を行ない
得る塗装方法を提供することである。An object of the present invention is to provide a coating method for reducing air conditioning energy required at the time of coating, and further provide a coating method with high coating efficiency and efficient exhaust air treatment. That is.
【０００９】[0009]
【課題を解決するための手段】本発明は、 「１．霧化ノズルを用いて塗料を噴霧する塗装方法にお
いて、該噴霧パタ−ンの周囲に温湿度制御可能な空気に
よるエア−カ−テンを形成することを特徴とする塗装方
法。According to the present invention, there is provided a coating method for spraying paint using an atomizing nozzle, wherein an air curtain with air capable of controlling the temperature and humidity is provided around the spray pattern. A coating method characterized by forming a coating.
【００１０】２．霧化ノズルから噴霧された塗料粒子の
うち未塗着の噴霧ダストを吸引するダクトを、エア−カ
−テンに隣接する外周に設けてなる１項記載の塗装方
法。[0010] 2. 2. The coating method according to claim 1, wherein a duct for sucking uncoated spray dust among the paint particles sprayed from the atomizing nozzle is provided on an outer periphery adjacent to the air curtain.
【００１１】３．エア−カ−テンの空気流量と霧化ノズ
ルからの空気流量の和が、噴霧ダストを吸引するダクト
の吸引空気量より小さい２項記載の塗装方法。」に関す
る。3. 3. The coating method according to claim 2, wherein the sum of the air flow rate of the air curtain and the air flow rate from the atomizing nozzle is smaller than the suction air amount of the duct for sucking the spray dust. About.
【００１２】[0012]
【発明の実施の形態】本発明では、霧化ノズルを用いて
塗料を噴霧する際に、該噴霧パタ−ンの周囲に温湿度制
御可能な空気によるエア−カ−テンを形成する。霧化ノ
ズルとしては、例えばエア−スプレ−、静電エア−スプ
レ−、エア−レススプレ−、静電エア−レススプレ−、
回転ベル型静電などに適用できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, when a paint is sprayed using an atomizing nozzle, an air curtain is formed around the spray pattern by air whose temperature and humidity can be controlled. Examples of the atomizing nozzle include an air spray, an electrostatic air spray, an airless spray, an electrostatic airless spray,
Applicable to rotating bell type electrostatics.
【００１３】温度及び湿度が適性に制御された空気は、
霧化ノズルの外周に設けられたエア−カ−テン形成用の
ダクトなどから被塗物に対してほぼ鉛直に噴出され、霧
化ノズルから噴霧される塗料や霧化空気による噴霧パタ
−ンを取り囲むエア−カ−テンとなる。Air whose temperature and humidity are appropriately controlled is
An air-curtain forming duct provided on the outer periphery of the atomizing nozzle or the like is sprayed almost perpendicularly to the object to be coated, and sprays the paint pattern or atomized air sprayed from the atomizing nozzle. It becomes the surrounding air curtain.
【００１４】霧化ノズルから噴霧される霧化空気は、周
囲に形成されたエアカ−テンの制御空気を巻き込むこと
で、噴霧パタ−ン内の雰囲気温湿度を制御することがで
きる。従って、霧化塗料粒子の塗着粘度制御を従来の全
体空調と同様に行なうことができる。The atomizing air sprayed from the atomizing nozzle can control the ambient temperature and humidity in the spray pattern by entraining the control air of an air curtain formed around the atomizing air. Therefore, the control of the coating viscosity of the atomized paint particles can be performed in the same manner as in the conventional general air conditioning.
【００１５】噴霧パタ−ンのシ−ス部を飛行する霧化塗
料粒子は、エアカ−テンの流れで矯正され、被塗物に対
してほぼ鉛直に衝突するので、通常は飛散してしまうよ
うな１０μｍ以下の微小粒子でも塗着させることができ
塗着可能となり、塗着効率が大幅に向上する。The atomized paint particles flying over the sheet portion of the spray pattern are corrected by the flow of the air curtain and collide almost vertically with the object to be coated. Even fine particles of 10 μm or less can be applied and can be applied, and the application efficiency is greatly improved.
【００１６】また本発明では、霧化ノズルから噴霧され
た塗料粒子のうち、未塗着の噴霧ダストを吸引するダク
トを、エア−カ−テンに隣接する外周に設けることがで
きる。In the present invention, a duct for sucking uncoated spray dust among the paint particles sprayed from the atomizing nozzle can be provided on the outer periphery adjacent to the air curtain.
【００１７】該ダクトをエア−カ−テンに隣接する外周
に設ける場合、ダクトの内壁に沿ってエア−カ−テンの
流れが被塗物に対して鉛直に形成される。該ダクトは、
通常、スリット状のダクト口を被塗物面から至近距離に
設けてなり、被塗物に向かって鉛直方向に流れるエア−
カ−テン流にも矯正されずに塗着しないサブミクロンオ
−ダ−の極微小粒子を、霧化塗料粒子から揮散した溶剤
蒸気やエア−カ−テンなどの空気と共に該ダクト口から
吸引する。このため霧化塗料粒子はダクトの外に飛散す
ることがない。When the duct is provided on the outer periphery adjacent to the air curtain, the flow of the air curtain is formed perpendicular to the substrate along the inner wall of the duct. The duct is
Usually, a slit-shaped duct opening is provided at a short distance from the surface of the object to be coated, and air flowing in a vertical direction toward the object to be coated is provided.
Ultra-fine particles of submicron order, which are not corrected and applied to the curtain flow and are not applied, are sucked from the duct port together with the solvent vapor and air such as air curtain volatilized from the atomized paint particles. Therefore, the atomized paint particles do not scatter outside the duct.
【００１８】上記ダクトを設ける場合には、エア−カ−
テンの空気流量と霧化ノズルからの空気流量の和が噴霧
ダストを吸引するダクトの吸引空気量より小さくなるよ
うに、それぞれ設定することが望ましい。When the above-mentioned duct is provided, an air car
It is preferable that the sum of the air flow rate of the ten and the air flow rate from the atomizing nozzle be set to be smaller than the suction air amount of the duct for sucking the spray dust.
【００１９】また上記ダクトを設けると、極微小粒子と
霧化塗料粒子から揮散した溶剤蒸気が、全体空調に比べ
限られた領域で必要最低限の排気空気で吸引されるた
め、上記ダクトで吸い出された排気空気中の溶剤濃度
は、活性炭吸着処理に適性な濃度とすることが可能で吸
着効率の良い処理条件を得ることが可能である。When the above-mentioned duct is provided, the solvent vapor which has volatilized from the ultrafine particles and the atomized paint particles is sucked by the required minimum amount of exhaust air in a limited area compared with the whole air conditioning. The solvent concentration in the discharged exhaust air can be adjusted to a concentration suitable for the activated carbon adsorption treatment, and it is possible to obtain processing conditions with high adsorption efficiency.
【００２０】[0020]
【実施例】以下、実施例を挙げて本発明をさらに詳細に
説明する。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples.
【００２１】図１は、本発明方法の第１の実施例を説明
する噴霧部位の断面図であり、図２はその正面図であ
る。FIG. 1 is a sectional view of a spraying part for explaining a first embodiment of the method of the present invention, and FIG. 2 is a front view thereof.
【００２２】図１において霧化ノズル１は、二重円筒で
吸い込み口２がスリット状になっている吸引ダクト３の
内筒中心に配置されている。また該吸引ダクト３の内筒
の内壁に沿ってエア−カ−テン用ノズル５が配置されて
いる。該エア−カ−テン用ノズル５からは、空調エア−
発生装置（図示せず）で生成される温湿度制御空気が放
出される。In FIG. 1, the atomizing nozzle 1 is disposed at the center of the inner cylinder of a suction duct 3 having a double cylinder and a suction port 2 having a slit shape. An air curtain nozzle 5 is arranged along the inner wall of the inner cylinder of the suction duct 3. From the air curtain nozzle 5, air-conditioned air is supplied.
Temperature and humidity control air generated by a generator (not shown) is discharged.
【００２３】霧化ノズル１から噴霧される霧化塗料粒子
（噴霧ダスト）は、噴霧パタ−ン４を描きながら被塗物
面７に到達するものであり、その際、吸引ダクト３の内
筒の内壁に沿って設けられたエア−カ−テン用ノズル５
から噴出された空気で形成されるエア−カ−テン空気流
６を随伴しながら、被塗物面７に到達して塗着し、ウエ
ット塗膜８を形成する。ダクト３は、霧化塗料粒子から
揮散する溶剤蒸気や未塗着の塗料粒子を空気と共に吸引
する。The atomized paint particles (spray dust) sprayed from the atomizing nozzle 1 reach the surface 7 to be coated while drawing the spray pattern 4, and at this time, the inner cylinder of the suction duct 3 Nozzle 5 for air curtain provided along the inner wall of
The air-curtain air flow 6 formed by the air jetted from the surface arrives at the surface 7 to be coated and is applied thereto, forming a wet coating film 8. The duct 3 sucks solvent vapor and uncoated paint particles volatilized from the atomized paint particles together with air.
【００２４】この時、スリット状の吸引ダクト３の吸い
込み口２は、霧化ノズル１から噴出される空気量とエア
−カ−テン空気流６の空気量の和より大きい量の空気を
吸い込めるように、蛇腹ホ−ス９で連結された排気装置
（図示せず）の能力を設定している。これによって、未
塗着の霧化塗料粒子が吸引ダクト３から外周へ飛散する
ことを抑制できる。At this time, the suction port 2 of the slit-shaped suction duct 3 can suck in a larger amount of air than the sum of the amount of air ejected from the atomizing nozzle 1 and the amount of air in the air-curtain air flow 6. Thus, the capacity of the exhaust device (not shown) connected by the bellows hose 9 is set. Thereby, it is possible to suppress the uncoated atomized paint particles from scattering from the suction duct 3 to the outer periphery.
【００２５】また被塗物面７と吸引ダクト３の距離は１
〜２ｃｍに保ち、吸引ダクト３の内筒と被塗物面７とで
形成される隙間と、その隙間を流れ出る霧化空気とエア
−カ−テンの空気の合計量から算出される排気空気の速
度より、スリット状の吸引ダクト３の吸い込み口２の面
積と排気装置の空気量から算出される吸い込み空気の速
度が高くなるように設定している。The distance between the substrate surface 7 and the suction duct 3 is 1
２2 cm, a gap formed between the inner cylinder of the suction duct 3 and the surface 7 to be coated, and the amount of exhaust air calculated from the total amount of atomized air and air-curtain air flowing through the gap. The speed of the suction air calculated from the area of the suction port 2 of the slit-shaped suction duct 3 and the air amount of the exhaust device is set higher than the speed.
【００２６】具体的に、上記霧化ノズル１として二流体
ノズル（アトマックス社製、「ＡＭ−２５Ｓ」）を、塗
料としてアミノアクリル系溶剤型塗料（関西ペイント社
製、「アミラック」）を使用し、霧化空気圧を３ｋｇ／
ｃｍ2 （霧化空気量：約１５Ｎｌ／ｍｉｎ）、塗料吐出
量を２０ｃｃ／ｍｉｎ、エア−カ−テン噴出量を３００
Ｎｌ／ｍｉｎ、スリット状ダクトの吸引量を５００Ｎｌ
／ｍｉｎ、ダクト吸い込み面と被塗物面との距離を２ｃ
ｍに設定し、塗装ロボット（図示せず）に取り付けられ
た吸引ダクト３及び霧化ノズル１を０．５ｍ／ｓｅｃの
速度で被塗面に対して運行しながら塗装を実施したとこ
ろ、塗着効率が約９４％で且つダストの見切り幅が約１
ｃｍ以内という結果が得られた。Specifically, a two-fluid nozzle ("AM-25S", manufactured by Atmax Co.) is used as the atomizing nozzle 1, and an aminoacrylic solvent type paint ("Amirac", manufactured by Kansai Paint Co., Ltd.) is used as a paint. And the atomizing air pressure is 3kg /
cm 2 (amount of atomized air: about 15 Nl / min), paint ejection amount 20 cc / min, air-curtain ejection amount 300
Nl / min, suction amount of slit duct is 500Nl
/ Min, the distance between the duct suction surface and the object surface is 2c
m, the suction duct 3 and the atomizing nozzle 1 attached to a coating robot (not shown) were operated at a speed of 0.5 m / sec on the surface to be coated, and the coating was performed. Efficiency is about 94% and the parting width of dust is about 1
The result was within cm.
【００２７】また雰囲気温湿度が２５℃・８５％ＲＨの
塗装ブ−ス内で、塗料として水性塗料（関西ペイント社
製、「アスカベ−ク」、不揮発分４２重量％）を使用
し、上記と同様の塗装機及び塗装条件で、且つエア−カ
−テンの空気温度を４０〜４５℃（１０％ＲＨ以下）に
設定して、垂直被塗物面に傾斜塗装を実施し、タレ限界
膜厚を測定した。また比較として上記塗装機からエア−
カ−テン用ノズル及び吸引ダクトの無い従来の方法で
も、同塗料で垂直被塗物面に傾斜塗装を実施しタレ限界
膜厚を測定した。その結果、制御空気によるエア−カ−
テンを形成した場合のタレ限界膜厚は約３５μｍであ
り、形成しない場合の約２５μｍよりアップすることが
確認できた。該タレ限界膜厚が約３５μｍなる結果は、
塗装ブ−ス全体を２５℃・７０％ＲＨに設定した場合の
結果と同等であり、このような全体空調をしなくても制
御空気によるエア−カ−テンを噴霧パタ−ンの周囲に形
成することで正常な塗装が可能であり、大幅にエネルギ
−を削減できる。In a coating booth having an atmosphere temperature and humidity of 25 ° C. and 85% RH, a water-based paint (“Askave”, manufactured by Kansai Paint Co., Ltd., nonvolatile content 42% by weight) was used as a paint. Using the same coating machine and coating conditions, and setting the air temperature of the air curtain at 40 to 45 ° C. (10% RH or less), the inclined coating is performed on the surface of the vertical object to be coated. Was measured. Also, for comparison, air-
Even in the conventional method without a curtain nozzle and a suction duct, the same paint was used for oblique coating on the surface of a vertical object to be coated, and the sagging limit film thickness was measured. As a result, the air-car
It was confirmed that the sagging limit film thickness when the ten was formed was about 35 μm, which was larger than about 25 μm when the ten was not formed. The result that the sagging limit film thickness is about 35 μm is as follows:
This is equivalent to the result when the entire coating bush is set at 25 ° C. and 70% RH, and the air curtain by the control air is formed around the spray pattern without such overall air conditioning. By doing so, normal coating is possible and energy can be greatly reduced.
【００２８】図３は、本発明方法の第２の実施例を説明
する噴霧部位の概略図であり、図４は本発明方法の第２
の実施例を説明する全体図である。FIG. 3 is a schematic view of a spraying part for explaining a second embodiment of the method of the present invention, and FIG.
FIG. 4 is an overall view for explaining the embodiment of FIG.
【００２９】図３において、回転霧化塗装機１４の円筒
ボディには、エア−カ−テン形成ダクト１１が取り付け
られており、空調エア−発生装置（図示せず）で生成さ
れる温湿度制御空気１０は、蛇腹ホ−ス１６を経てエア
−カ−テン形成ダクト１１に供給され、さらにスプレ−
開始信号と連動してエア−カ−テン噴出口１２から塗料
霧化粒子の噴霧パタ−ン１７に向けて放出される。噴霧
パタ−ン１７は、ベルカップ１３によって生成された塗
料粒子が、ベルカップ周囲から噴出されるシェ−ピング
エア−により噴霧パタ−ン形成されるものであり、温湿
度制御空気１０は、このシェ−ピングエア−の随伴流と
なって噴霧パタ−ン１７内に導入される。In FIG. 3, an air-curtain forming duct 11 is attached to the cylindrical body of the rotary atomizer 14 to control the temperature and humidity generated by an air-conditioning air generator (not shown). The air 10 is supplied to the air-curtain forming duct 11 through a bellows hose 16 and is further sprayed.
In conjunction with the start signal, the paint is discharged from the air curtain outlet 12 toward the spray pattern 17 of the atomized paint particles. The spray pattern 17 is a spray pattern in which the paint particles generated by the bell cup 13 are formed by shaping air ejected from around the bell cup. -Ping air is introduced into the spray pattern 17 as an accompanying flow.
【００３０】従って、噴霧パタ−ン１７内の塗料霧化粒
子は、ベルカップ１３から被塗物面（図示せず）へ飛行
し塗着するまでの間、温湿度制御空気１０が随伴された
シェ−ピングエア−雰囲気により溶剤揮散量が制御さ
れ、適正な塗着粘度で被塗物面に到達することになる。Accordingly, the temperature and humidity control air 10 was entrained from the atomized paint particles in the spray pattern 17 until they flew from the bell cup 13 to the surface to be coated (not shown) and were applied. The amount of solvent volatilized is controlled by the shaping air atmosphere, and the solvent reaches the surface of the substrate with an appropriate coating viscosity.
【００３１】上記回転霧化塗装機１４は、図４のとお
り、塗装ロボット１５に取り付けられる。該塗装ロボッ
ト１５は、塗装ブ−ス内に設置されている。The rotary atomizer 14 is mounted on a painting robot 15 as shown in FIG. The painting robot 15 is installed in a painting booth.
【００３２】具体的に、上記回転霧化塗装機１４として
「μマイクロベル」（ランズバ−グ社製）を、固形分７
５重量％のクリヤ−塗料（関西ペイント社製）を使用
し、回転数３０，０００ｒｐｍ、塗料吐出量２００ｃｃ
／ｍｉｎ、シェ−ピングエア−圧を２ｋｇ／ｃｍ2 （空
気使用量：３００リットル／ｍｉｎ）の塗装条件で、エ
ア−カ−テン形成ダクト１１から供給される制御空気の
温度を４５〜５０℃（１０％ＲＨ以下）、その供給空気
量を１０００Ｎｌ／ｍｉｎに設定し、塗装ブ−ス全体の
空調はせず、成り行きの温湿度条件（１８℃／４５％）
で、垂直被塗物面に傾斜塗装を実施しタレ限界膜厚を測
定した。また比較として、上記塗装機からエア−カ−テ
ン用ダクトの無い従来の方法でも、同じ塗装条件及び塗
料で垂直被塗物面に傾斜塗装を実施しタレ限界膜厚を測
定した。その結果、制御空気によるエア−カ−テンを形
成した場合のタレ限界膜厚は約４０μｍであり、形成し
ない場合の約３０μｍよりアップしていた。該タレ限界
膜厚が約４０μｍなる結果は、塗装ブ−ス全体を２５〜
３０℃に設定した場合の結果と同レベルであり、塗装ブ
−ス全体の空調を行なわずに、制御空気によるエア−カ
−テンを噴霧パタ−ンの周囲に形成することで、正常な
塗装が可能であることが確認できた。Specifically, ".mu. Microbell" (manufactured by Landsberg) as the rotary atomizing coating machine 14 was used.
Using 5% by weight of clear paint (manufactured by Kansai Paint Co., Ltd.), the number of revolutions is 30,000 rpm, and the paint discharge amount is 200 cc.
/ Min, shaping air pressure is 2 kg / cm 2 (air consumption: 300 l / min), and the temperature of the control air supplied from the air-curtain forming duct 11 is 45 to 50 ° C. 10% RH or less), the supply air amount is set to 1000 Nl / min, and the entire coating bus is not air-conditioned.
Then, the inclined coating was performed on the surface of the vertical coated object, and the sagging limit film thickness was measured. As a comparison, the conventional coating method without the air-curtain duct from the above-mentioned coating machine was also applied to the vertical coating on the surface of the object to be coated under the same coating conditions and coating, and the sagging limit film thickness was measured. As a result, when the air curtain was formed by the control air, the sagging limit film thickness was about 40 μm, which was larger than about 30 μm when the air curtain was not formed. The result that the sagging limit film thickness is about 40 μm is that the entire coating bush is 25 to
The result is the same level as the result when the temperature is set to 30 ° C, and the normal coating is performed by forming the air curtain by the control air around the spray pattern without air conditioning of the entire coating bush. Was confirmed to be possible.
【００３３】[0033]
【発明の効果】本発明の塗装方法によれば、適正な塗装
雰囲気を確保しつつ、塗装ブ−スに必要な空調エネルギ
−を削減でき、さらには効率の良い排気空気処理を行な
うことが可能である。According to the coating method of the present invention, it is possible to reduce the air-conditioning energy required for a coating bus while ensuring an appropriate coating atmosphere, and it is possible to perform efficient exhaust air treatment. It is.
【図１】本発明方法の第１の実施例を説明する噴霧部位
の断面図である。FIG. 1 is a cross-sectional view of a spray area for explaining a first embodiment of the method of the present invention.
【図２】本発明方法の第１の実施例を説明する噴霧部位
の正面図である。FIG. 2 is a front view of a sprayed part for explaining a first embodiment of the method of the present invention.
【図３】本発明方法の第２の実施例を説明する噴霧部位
の概略図である。FIG. 3 is a schematic view of a sprayed part for explaining a second embodiment of the method of the present invention.
【図４】本発明方法の第２の実施例を説明する全体図で
ある。FIG. 4 is an overall view for explaining a second embodiment of the method of the present invention.
１ … 霧化ノズル ２ … ダクト吸い込み口 ３ … スリット状ダクト ４ … 噴霧パタ−ン ５ … エア−カ−テン用ノズル ６ … エア−カ−テン空気流 ７ … 被塗物面 ８ … ウェット塗膜 ９ … 蛇腹ホ−ス １０ … 温湿度制御空気 １１ … エア−カ−テン形成ダクト １２ … エア−カ−テン噴出口 １３ … ベルカップ １４ … 回転霧化塗装機 １５ … 塗装ロボット １６ … 蛇腹ホ−ス １７ … 噴霧パタ−ン DESCRIPTION OF SYMBOLS 1 ... Atomizing nozzle 2 ... Duct suction port 3 ... Slit-shaped duct 4 ... Spray pattern 5 ... Air-curtain nozzle 6 ... Air-curtain air flow 7 ... Coating surface 8 ... Wet coating 9 ... bellows hose 10 ... temperature-humidity control air 11 ... air-curtain forming duct 12 ... air-curtain outlet 13 ... bell cup 14 ... rotary atomizing coating machine 15 ... painting robot 16 ... bellows hose S 17: Spray pattern
Claims (3)
方法において、該噴霧パタ−ンの周囲に温湿度制御可能
な空気によるエア−カ−テンを形成することを特徴とす
る塗装方法。1. A coating method in which a paint is sprayed using an atomizing nozzle, wherein an air curtain is formed around the spray pattern by air whose temperature and humidity can be controlled.
ち未塗着の噴霧ダストを吸引するダクトを、エア−カ−
テンに隣接する外周に設けてなる請求項１記載の塗装方
法。2. A duct for sucking uncoated spray dust among paint particles sprayed from an atomizing nozzle is provided with an air car.
The coating method according to claim 1, wherein the coating method is provided on an outer periphery adjacent to the ten.
からの空気流量の和が噴霧ダストを吸引するダクトの吸
引空気量より小さい請求項２記載の塗装方法。3. The coating method according to claim 2, wherein the sum of the air flow rate of the air curtain and the air flow rate from the atomizing nozzle is smaller than the suction air amount of the duct for sucking the spray dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10027932A JPH11221516A (en) | 1998-02-10 | 1998-02-10 | Coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10027932A JPH11221516A (en) | 1998-02-10 | 1998-02-10 | Coating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11221516A true JPH11221516A (en) | 1999-08-17 |
Family
ID=12234679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10027932A Pending JPH11221516A (en) | 1998-02-10 | 1998-02-10 | Coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11221516A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1136583A1 (en) * | 2000-03-20 | 2001-09-26 | Sulzer Metco AG | Method and apparatus for thermally coating the cylinder surfaces of combustion engines |
| KR20010091994A (en) * | 2000-03-15 | 2001-10-23 | 이데이 노부유끼 | A method of coating carbon inside cathode ray tube funnels and an apparatus used therefor |
| JP2002113415A (en) * | 2000-10-05 | 2002-04-16 | Kansai Paint Co Ltd | Method for forming coating film |
| WO2006129764A1 (en) * | 2005-06-03 | 2006-12-07 | Fumin Corporation | Coating process for forming films containing ultraviolet- or infrared-screening agents |
| JP2012152660A (en) * | 2011-01-24 | 2012-08-16 | Panasonic Corp | Rotary spray coating device |
-
1998
- 1998-02-10 JP JP10027932A patent/JPH11221516A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010091994A (en) * | 2000-03-15 | 2001-10-23 | 이데이 노부유끼 | A method of coating carbon inside cathode ray tube funnels and an apparatus used therefor |
| EP1136583A1 (en) * | 2000-03-20 | 2001-09-26 | Sulzer Metco AG | Method and apparatus for thermally coating the cylinder surfaces of combustion engines |
| US6503577B2 (en) | 2000-03-20 | 2003-01-07 | Sulzer Metco Ag | Method of thermally coating a cylinder barrel of a cylinder block of a combustion engine |
| KR100738790B1 (en) * | 2000-03-20 | 2007-07-12 | 술처 멧코 아게 | A method and an apparatus for thermally coating the cylinder barrels of a combustion engine |
| JP2002113415A (en) * | 2000-10-05 | 2002-04-16 | Kansai Paint Co Ltd | Method for forming coating film |
| JP2002113410A (en) * | 2000-10-05 | 2002-04-16 | Kansai Paint Co Ltd | Method for forming coating film |
| WO2006129764A1 (en) * | 2005-06-03 | 2006-12-07 | Fumin Corporation | Coating process for forming films containing ultraviolet- or infrared-screening agents |
| AU2006253332B2 (en) * | 2005-06-03 | 2010-05-20 | Fumin Corporation | Coating process for forming films containing ultraviolet- or infrared-screening agents |
| US8287946B2 (en) | 2005-06-03 | 2012-10-16 | Fumin Corporation | Coating process for forming films containing ultraviolet- or infrared-screening agents |
| KR101298460B1 (en) * | 2005-06-03 | 2013-08-23 | 가부시키가이샤 후민 | Coating process for forming films containing ultraviolet- or infrared-screening agents |
| JP2012152660A (en) * | 2011-01-24 | 2012-08-16 | Panasonic Corp | Rotary spray coating device |
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