JP2001046925A - Rotary bell type coating device - Google Patents

Rotary bell type coating device

Info

Publication number
JP2001046925A
JP2001046925A JP11223200A JP22320099A JP2001046925A JP 2001046925 A JP2001046925 A JP 2001046925A JP 11223200 A JP11223200 A JP 11223200A JP 22320099 A JP22320099 A JP 22320099A JP 2001046925 A JP2001046925 A JP 2001046925A
Authority
JP
Japan
Prior art keywords
air
ring
amplifier
bell
compressed air
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
Application number
JP11223200A
Other languages
Japanese (ja)
Inventor
Toru Takeuchi
徹 竹内
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansai Paint Co Ltd
Original Assignee
Kansai Paint Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kansai Paint Co Ltd filed Critical Kansai Paint Co Ltd
Priority to JP11223200A priority Critical patent/JP2001046925A/en
Publication of JP2001046925A publication Critical patent/JP2001046925A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
    • B05B5/0407Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0426Means for supplying shaping gas

Abstract

PROBLEM TO BE SOLVED: To improve coating efficiency by installing an air amplifier to hold a space, where air freely flows, between a rotary bell type coater body and the air amplifier and discharging compressed air from a ring like air discharging part to control the flying direction of coating material particles atomized by the rotary bell. SOLUTION: A slit 10 of the ring like air discharging part of the air amplifier 8 has a hollow metallic ring concentric with the outer periphery of a bell head 13 of the rotary bell and having, for example, many fine tubular nozzles 11 uniformly arranged ring like and is structured to jet air from the fine tubular nozzles 11. The air amplifier 8 is installed to hold the space, where air freely flows, between the rotary bell type coater body 7 and the air amplifier 8. When discharging the compressed air from the ring like air discharging part (slit) 10 of the air amplifier 8, the entrained air freely comes into the inside and the outside of the air amplifier 8 and thus, a large quantity of air flow can be formed with a small quantity of the compressed air.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、圧縮空気が吐出す
るスリットを有するリング状空気増幅器を具備した、回
転ベル型塗装装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary bell type coating apparatus provided with a ring-shaped air amplifier having a slit for discharging compressed air.

【0002】[0002]

【従来の技術】回転ベルを使用した回転ベル型塗装機
は、仕上がりが良好で高塗着効率が得られることから、
自動車塗装ラインなどに代表される工業用塗装ラインで
は、塗装機の主流となっている。
2. Description of the Related Art A rotary bell type coating machine using a rotary bell has a good finish and high coating efficiency.
Industrial coating lines, such as automobile coating lines, are the mainstream of coating machines.

【0003】回転ベル型塗装機では、通常20,000
から50,000rpmの高速で回転するベルに塗料が
供給され、遠心力により塗料は薄いフィルム状となり、
ひも状分裂を経て滴状に微粒化する。この時、微粒化さ
れた霧化塗料粒子は遠心力方向に飛び広がり、回転数が
高く粒子径が大きいほど遠くまで飛散する。通常、霧化
粒子は回転ベルに印加された高電圧によって接触帯電に
より電荷を与えられ、回転ベルと接地された被塗物との
間で形成される電界の作用を受け、静電気力で被塗物へ
塗着する。
[0003] In a rotary bell type coating machine, 20,000 is usually used.
Is supplied to the bell which rotates at a high speed of 50,000 rpm, and the paint becomes a thin film by centrifugal force.
Droplets are atomized through string splitting. At this time, the atomized paint particles that have been atomized fly and spread in the direction of centrifugal force, and fly farther as the rotation speed is higher and the particle diameter is larger. Normally, the atomized particles are charged by contact charging due to the high voltage applied to the rotating bell, are subjected to the action of an electric field formed between the rotating bell and a grounded workpiece, and are coated by electrostatic force. Apply to objects.

【0004】被塗物が遠心力方向に配置されて塗装され
るラインでは問題ないが、被塗物が回転するベルの遠心
力方向と直角方向に配置されて塗装されるラインでは、
回転ベルで霧化された塗料粒子を被塗物方向へ矯正する
ためのシェーピングエアを必要とする。このシェーピン
グエアは回転ベルのベルエッジ近傍に同心円状のスリッ
トから圧縮空気を吐出させるもので、通常ベルエッジか
ら数mmの位置にスリット状の吐出口が設けられてお
り、2〜3kg/cm2 程度の圧力の圧縮空気が供給さ
れる。このシェーピングエア圧と塗料吐出量と回転ベル
の回転数によって有効スプレーパターン幅が決定される
ことになる。
There is no problem in a line in which the object is placed in the direction of centrifugal force to be painted, but in a line in which the object is placed in the direction perpendicular to the direction of centrifugal force of the rotating bell, the object is painted.
Shaping air is required to correct the paint particles atomized by the rotating bell toward the workpiece. This shaping air discharges compressed air from a concentric slit near the bell edge of the rotating bell, and usually has a slit-shaped discharge port at a position several mm from the bell edge, and has a volume of about 2 to 3 kg / cm 2 . Compressed air at pressure is supplied. The effective spray pattern width is determined by the shaping air pressure, the paint discharge amount, and the number of rotations of the rotary bell.

【0005】メタリック塗料を対象にした回転ベル型塗
装機では、より強いシェーピングエアを、例えばスパイ
ラル状に、効果的に供給することで霧化粒子の直進力を
増し、メタリック顔料の配向性を向上させるなどの改良
が施されている。
In a rotary bell type coating machine for a metallic paint, a stronger shaping air is effectively supplied, for example, in a spiral shape, thereby increasing the straight-forward force of the atomized particles and improving the orientation of the metallic pigment. Improvements have been made, such as

【0006】[0006]

【発明が解決しようとする課題】しかしながら、上記シ
ェーピングエア機構には次のような欠点があった。この
シェーピングエアはスリット状の吐出口から薄いエアカ
ーテン状に吐出されるため、比較的大きな霧化粒子はこ
のエアカーテンを突き破って遠心力方向に飛散してしま
い、この飛散した塗料粒子は被塗物に対し未塗着粒子と
なってしまうため塗着効率を低下させるといった問題が
ある。
However, the above-mentioned shaping air mechanism has the following disadvantages. Since this shaping air is discharged in a thin air curtain shape from a slit-shaped discharge port, relatively large atomized particles break through the air curtain and scatter in the direction of centrifugal force, and the scattered paint particles are coated. There is a problem that the coating efficiency is lowered because the particles become uncoated particles.

【0007】シェーピングエアの圧力を上げてエアカー
テンの直進力を強くする方法もあるがエア消費量が増加
するだけでなく、スリット状の吐出口から形成されるエ
アカーテンの外側は自由界面であるため随伴気流は自由
に流れ込むことができるが、エアカーテンの内側は回転
ベルおよび塗装機本体があるため、随伴気流は回転ベル
前方から入り込み回転ベルの内側を通過してエアカーテ
ンと合流する。その結果、霧化粒子の中でも特に粒径の
小さな塗料粒子はこの随伴気流に乗って回転ベルに付着
し、定期的な回転ベルの洗浄が必要になるなどの余分な
作業工数を増加させる原因になっている。さらに、エア
カーテンの風速が必要以上に大きくなると、被塗物に当
たって拡散する空気の流れが強くなるため、静電気力に
よる霧化粒子の塗着を阻害することになり、結果的に塗
着効率が低下するなどの不具合が生じる。
There is also a method of increasing the pressure of the shaping air to increase the straight traveling force of the air curtain. However, not only does the air consumption increase, but the outside of the air curtain formed by the slit-shaped discharge port is a free interface. Therefore, the accompanying airflow can freely flow in. However, since the rotating bell and the coating machine main body are inside the air curtain, the accompanying airflow enters from the front of the rotating bell, passes through the inside of the rotating bell, and merges with the air curtain. As a result, the paint particles having a particularly small particle size among the atomized particles are attached to the rotating bell by this accompanying airflow, which causes an increase in extra work man-hours such as a need to periodically clean the rotating bell. Has become. Furthermore, if the wind speed of the air curtain becomes unnecessarily high, the flow of air that spreads and hits the object to be coated becomes strong, which impedes the application of atomized particles due to electrostatic force, and as a result, the coating efficiency is reduced. Problems such as lowering occur.

【0008】本発明の目的は、少量の圧縮空気で、回転
ベルで霧化された塗料粒子の飛行方向を効果的に制御で
き、塗着効率を低下させない回転ベル型塗装装置を提供
することである。
An object of the present invention is to provide a rotary bell type coating apparatus which can effectively control the direction of flight of paint particles atomized by a rotary bell with a small amount of compressed air and does not reduce coating efficiency. is there.

【0009】[0009]

【課題を解決するための手段】本発明者らは、鋭意研究
の結果、空気増幅器を特定箇所に具備したベル型塗装機
によって上記目的を達成できることを見出し本発明を完
成させるに至った。
Means for Solving the Problems As a result of earnest studies, the present inventors have found that the above object can be achieved by a bell type coating machine having an air amplifier at a specific location, and have completed the present invention.

【0010】すなわち、本発明は、回転ベルにより塗料
を霧化する塗装装置であって、圧縮空気を吐出するリン
グ状空気吐出部を有する空気増幅器が、該回転ベルのベ
ルヘッドの外周と該リング状空気吐出部とが同心円状と
なり、かつ回転ベル型塗装機本体と該空気増幅器との間
に空気が自由に流通できる空間を保持して設置されてお
り、該リング状空気吐出部からの圧縮空気の吐出によっ
て回転ベルにより霧化された塗料粒子の飛行方向を制御
できるようにしてなることを特徴とする回転ベル型塗装
装置を提供するものである。
That is, the present invention relates to a coating apparatus for atomizing paint by a rotating bell, wherein an air amplifier having a ring-shaped air discharging portion for discharging compressed air is provided between the outer periphery of a bell head of the rotating bell and the ring-shaped. The air discharge section is concentric, and is installed between the rotary bell type coating machine main body and the air amplifier while maintaining a space through which air can freely flow, and compressed air from the ring-shaped air discharge section is provided. The present invention provides a rotary bell type coating apparatus characterized in that the direction of flight of paint particles atomized by a rotary bell can be controlled by the discharge.

【0011】[0011]

【発明の実施の形態】本発明の塗装装置には、圧縮空気
を吐出するリング状空気吐出部を有する空気増幅器が具
備されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The coating apparatus according to the present invention is provided with an air amplifier having a ring-shaped air discharge section for discharging compressed air.

【0012】この空気増幅器は、回転ベル型塗装機本体
と該空気増幅器との間に空気が自由に流通できる空間を
保持しているため、圧縮空気が空気増幅器のリング状空
気吐出部から吐出される際に、随伴気流は空気増幅器の
内側および外側から自由に入り込むことができるため、
結果的に少量の圧縮空気で大量の空気流を形成させるこ
とが可能となる。
Since the air amplifier has a space through which air can freely flow between the rotary bell type coating machine main body and the air amplifier, compressed air is discharged from the ring-shaped air discharge portion of the air amplifier. The air flow can freely enter from inside and outside the air amplifier,
As a result, a large amount of airflow can be formed with a small amount of compressed air.

【0013】上記空気増幅器で形成されるエアカーテン
は、従来のベルエッジ近傍に同心円状のスリットから形
成されるシェーピングエアに比べ、同じ空気圧において
数倍の厚みを持っており、回転ベルから遠心力方向に飛
ばされた霧化粒子の飛行経路を効率的に被塗物方向へ矯
正することができる。
The air curtain formed by the air amplifier has several times the thickness at the same air pressure as compared with the conventional shaping air formed by a concentric slit near the bell edge, and has a centrifugal force direction from the rotating bell. It is possible to efficiently correct the flight path of the atomized particles blown toward the object to be coated.

【0014】また、空気増幅器のリング状空気吐出部は
回転ベルのベルヘッドの外周と同心円状であり、スリッ
トからの圧縮空気によって均一な円状のエアカーテンを
形成することができ、円状の塗料スプレーパターンとす
ることができる。
Further, the ring-shaped air discharge portion of the air amplifier is concentric with the outer periphery of the bell head of the rotary bell, and can form a uniform circular air curtain by compressed air from the slit. It can be a spray pattern.

【0015】圧縮空気によって均一な円状のエアカーテ
ンを形成するための空気増幅器のリング状空気吐出部の
構造としては、下記(1)、(2)などを挙げることが
できる。 (1)多数の細管ノズルがリング状に均等に配置された
中空の金属リングを有し、該細管ノズルから圧縮空気が
噴出される構造、 (2)多数の細管ノズルを均等に埋め込んだ中空の金属
リングを有し、該細管ノズルから圧縮空気が噴出され、
噴出された圧縮空気がリング状スリットから吐出される
構造。
The structures of the ring-shaped air discharge portion of the air amplifier for forming a uniform circular air curtain by compressed air include the following (1) and (2). (1) A structure in which a large number of thin tube nozzles have a hollow metal ring evenly arranged in a ring shape, and compressed air is ejected from the small tube nozzles. (2) A hollow tube in which a large number of thin tube nozzles are evenly embedded. Having a metal ring, compressed air is ejected from the capillary nozzle,
A structure in which the jetted compressed air is discharged from a ring-shaped slit.

【0016】上記(2)の構造は、上記(1)の構造に
おいて、細管ノズルの噴出口の前にスリットの空隙が存
在するようにリング状スリットを設けた構造であること
ができる。リング状スリットを設けることによって、よ
り均一なエアカーテンを形成することが可能である。
The above structure (2) may be a structure in which a ring-shaped slit is provided in the structure of the above (1) such that a slit gap exists in front of the outlet of the thin tube nozzle. By providing the ring-shaped slit, it is possible to form a more uniform air curtain.

【0017】本発明装置において、空気増幅器は1個設
置されていてもよいが、2個以上設置してもよい。2個
以上設置する場合には、外径の異なるものを設置するこ
とが効果的であり、必要な霧化パターンの大きさに応じ
て調整することができる。
In the apparatus of the present invention, one air amplifier may be provided, or two or more air amplifiers may be provided. When two or more are installed, it is effective to install ones having different outer diameters, which can be adjusted according to the required size of the atomization pattern.

【0018】[0018]

【実施例】比較例1 図1は、従来の回転ベル型塗装機におけるシェーピング
エア吐出口からの圧縮空気の流れと随伴気流の流れを示
している。シェーピングエア1はベルヘッドの外端面に
沿って流れるように同心円状スリット2から吐出され
る。随伴気流はベルヘッドの外端面へ流れ込む気流3と
ベルヘッドの内側から内端面へ流れ込む気流4に分けら
れる。この場合、シェーピングエアがベルヘッドの端面
で形成する気流の厚みは、供給する圧縮空気の圧力が2
kg/ cm2 、圧縮空気量300リットル/分(この量
は1気圧に換算して)で1〜2cm程度となり、スプレ
ーパターンはシェーピングエアで方向制御される比較的
小さな霧化塗料粒子群5(一部のみ図示)と、この気流
を突き破って遠心力方向に飛散する比較的大きな霧化塗
料粒子群6(一部のみ図示)で形成される。
FIG. 1 shows the flow of compressed air and the flow of accompanying air from a shaping air discharge port in a conventional rotary bell type coating machine. The shaping air 1 is discharged from the concentric slit 2 so as to flow along the outer end surface of the bell head. The accompanying airflow is divided into an airflow 3 flowing into the outer end surface of the bell head and an airflow 4 flowing from the inside of the bellhead to the inner end surface. In this case, the thickness of the airflow formed by the shaping air at the end face of the bell head is determined by the pressure of the compressed air supplied.
kg / cm 2 , compressed air amount 300 liter / min (this amount is converted to 1 atm), it becomes about 1 to 2 cm, and the spray pattern is relatively small atomized paint particles 5 (directional control by shaping air). And a relatively large atomized paint particle group 6 (only a part shown) that breaks through the air flow and scatters in the direction of the centrifugal force.

【0019】実施例1 図2は本発明の回転ベル型塗装装置の第一の実施例の説
明図(正面概略図と左側面概略図)である。回転ベル型
塗装機本体7に空気増幅器8が4本の支持体9により据
え付けられている。リング状空気増幅器の外径は18c
m、内径は16cmで、リング状空気吐出部であるスリ
ット10は幅2mmの円状のスリットになっているが、
その内部には外径1.5mmφステンレス製の細管11
(一部のみ図示)をリング状に均等に並べた中空の金属
リングがあり、圧縮空気が各細管から噴出し、スリット
からの圧縮空気の吐出が均一になるように配慮したもの
となっている。塗装機本体の外径は約12cmであり、
空気増幅器と塗装機本体との間には約2cmの空間が形
成されている。その結果、空気増幅器のスリットから吐
出された圧縮空気は空気増幅器後方からの空気を随伴し
て増幅され空気増幅器前方へ吹き出される。空気増幅器
がベルヘッド付近で形成するシェーピングエア12の気
流の厚みは、供給する圧縮空気の圧力が1kg/ c
2 、圧縮空気量150リットル/分(この量は1気圧
に換算して)で5〜6cm程度あり、通常の微粒化条件
で生成される霧化塗料粒子ではこの厚みの気流を突き破
って飛散するような現象は発生しなかった。また、ベル
カップの汚れが殆どなかった。この塗装装置において、
従来のベルエッジ近傍のスリット状吐出口からのシェー
ピングエアを併用してもよい。
Embodiment 1 FIG. 2 is an explanatory view (a schematic front view and a schematic left side view) of a rotary bell type coating apparatus according to a first embodiment of the present invention. An air amplifier 8 is mounted on a rotary bell type coating machine main body 7 by four supports 9. Outer diameter of ring air amplifier is 18c
m, the inner diameter is 16 cm, and the slit 10 which is a ring-shaped air discharge part is a circular slit having a width of 2 mm,
Inside the tube is a stainless steel tube with an outer diameter of 1.5 mmφ11.
There is a hollow metal ring in which (partially shown) is evenly arranged in a ring shape so that compressed air is blown out from each capillary and the discharge of compressed air from the slit is made uniform. . The outer diameter of the coating machine body is about 12cm,
A space of about 2 cm is formed between the air amplifier and the main body of the coating machine. As a result, the compressed air discharged from the slit of the air amplifier is amplified together with the air from the rear of the air amplifier and is blown out to the front of the air amplifier. The thickness of the air flow of the shaping air 12 formed near the bell head by the air amplifier is such that the pressure of the supplied compressed air is 1 kg / c.
m 2 , 150 liters / minute of compressed air (this amount is converted to 1 atm) is about 5 to 6 cm, and the atomized paint particles generated under ordinary atomization conditions break through the air flow of this thickness and scatter. No such phenomenon occurred. Also, there was almost no stain on the bell cup. In this coating equipment,
Conventional shaping air from a slit-shaped discharge port near the bell edge may be used together.

【0020】また、シェーピングエアの気流が流れる位
置はベルヘッド13の端部から約5cmであり、霧化さ
れた塗料粒子はベルヘッドから遠心力で飛ばされて5c
m飛行する間に空気抵抗で減速されるためリング状空気
増幅器からのシェーピングエアによる方向制御はより効
果的に作用したと考えられる。
The position where the airflow of the shaping air flows is about 5 cm from the end of the bell head 13, and the atomized paint particles are blown off by centrifugal force from the bell head 13.
It is considered that the directional control by the shaping air from the ring-shaped air amplifier worked more effectively because the air was decelerated by the air resistance during the flight.

【0021】実施例2 図3は本発明の回転ベル型塗装装置の第二の実施例の説
明図(正面概略図)である。外径16cm、内径14c
mの第1の空気増幅器14と外径20cm、内径18c
mの第2の空気増幅器15の2個のリング状空気増幅器
が塗装機本体に取り付けられている。第1の空気増幅器
14におけるリング状空気吐出部は、外径1.5mmφ
ステンレス製の細管16(一部のみ図示)をリング状に
均等に並べた中空の金属リングの細管の圧縮空気吐出口
のリング状集合体である。第1の空気増幅器14におけ
るリング状空気吐出部は、圧縮空気の吹き出し角度が塗
装方向に対し約10度内側に傾けた形状に設計されてい
る。第2のリング状増幅器のリング状空気吐出部である
スリットは幅2mmの円状のスリットになっているが、
その内部には外径1.5mmφステンレス製の細管(一
部のみ図示)をリング状に均等に並べた中空の金属リン
グがあり、圧縮空気が各細管から噴出し、スリットから
の圧縮空気の吐出が均一になるように配慮したものとな
っている。
Embodiment 2 FIG. 3 is an explanatory view (a schematic front view) of a second embodiment of a rotary bell type coating apparatus according to the present invention. Outer diameter 16cm, inner diameter 14c
m of the first air amplifier 14 with an outer diameter of 20 cm and an inner diameter of 18 c
Two ring-shaped air amplifiers of the m second air amplifier 15 are attached to the coating machine main body. The ring-shaped air discharge portion in the first air amplifier 14 has an outer diameter of 1.5 mmφ.
This is a ring-shaped aggregate of compressed air discharge ports of hollow metal ring thin tubes in which stainless steel thin tubes 16 (only some of which are shown) are evenly arranged in a ring shape. The ring-shaped air discharge portion of the first air amplifier 14 is designed to have a shape in which the blowout angle of the compressed air is inclined inward by about 10 degrees with respect to the painting direction. The slit serving as the ring-shaped air discharge portion of the second ring-shaped amplifier is a circular slit having a width of 2 mm.
Inside there is a hollow metal ring in which 1.5 mmφ stainless steel thin tubes (only some of which are shown) are evenly arranged in a ring shape. Compressed air is blown out from each thin tube, and compressed air is discharged from slits. Are considered so as to be uniform.

【0022】その結果、回転ベル型塗装機におけるスプ
レーパターンの特徴である中抜けパターン(ドーナツ状
パターン)が解消され、さらに第2のリング状増幅器に
より外径が約30cmの良好なスプレーパターンを得る
ことができ、ベルカップの汚れが殆どなかった。
As a result, the hollow pattern (doughnut pattern) which is a characteristic of the spray pattern in the rotary bell type coating machine is eliminated, and a good spray pattern having an outer diameter of about 30 cm is obtained by the second ring amplifier. The bell cup was almost clean.

【0023】[0023]

【発明の効果】本発明塗装装置によれば、少量の圧縮空
気に随伴気流が効率良く入り込み、圧縮空気を増幅して
使用できるのでコンプレッサーへの電力負荷が小さくな
りランニングコストが低減される。また、従来の回転ベ
ル型塗装機に空気増幅器を組み込んで本発明塗装装置と
することができ、容易にスプレーパターンを制御するこ
とが可能である。
According to the coating apparatus of the present invention, the accompanying air flow efficiently enters a small amount of compressed air, and the compressed air can be amplified and used, so that the power load on the compressor is reduced and the running cost is reduced. Further, an air amplifier can be incorporated into a conventional rotary bell type coating machine to form the coating apparatus of the present invention, and the spray pattern can be easily controlled.

【0024】本発明塗装装置によって、これまで遠心力
方向に飛散してしまうような大粒子や比重の大きいメタ
リック顔料の入った塗料粒子なども塗着させることがで
きるので塗着効率を向上させることができる。
[0024] The coating apparatus of the present invention can coat large particles which are scattered in the direction of centrifugal force or paint particles containing a metallic pigment having a large specific gravity, so that the coating efficiency is improved. Can be.

【0025】さらに、回転ベルの内側から逆流してシェ
ーピングエアと合流する随伴気流が発生しないのでベル
カップの汚れの問題が激減し、ベル洗浄にかかる余分な
工数や洗浄シンナーなどが低減できる。
Further, since there is no accompanying airflow that flows backward from the inside of the rotary bell and merges with the shaping air, the problem of dirt on the bell cup is drastically reduced, and the extra man-hour for bell cleaning and cleaning thinner can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】従来の回転ベル型塗装機におけるシェーピング
エア吐出口からの圧縮空気の流れと随伴気流の流れの説
明図である。
FIG. 1 is an explanatory diagram of a flow of compressed air and a flow of accompanying air from a shaping air discharge port in a conventional rotary bell type coating machine.

【図2】本発明の回転ベル型塗装装置の第一の実施例の
説明図である。
FIG. 2 is an explanatory view of a first embodiment of a rotary bell type coating apparatus according to the present invention.

【図3】本発明の回転ベル型塗装装置の第二の実施例の
説明図である。
FIG. 3 is an explanatory view of a second embodiment of the rotary bell type coating apparatus of the present invention.

【符号の説明】[Explanation of symbols]

1、12・・・・・シェーピングエア 2・・・・・・・・同心円状スリット 3、4・・・・・・随伴気流 5、6・・・・・・霧化塗料粒子群 7・・・・・・・・回転ベル型塗装機本体 8・・・・・・・・空気増幅器 9・・・・・・・・支持体 10、16・・・・スリット 11・・・・・・・細管 13・・・・・・・ベルヘッド 14・・・・・・・第1の空気増幅器 15・・・・・・・第2の空気増幅器 1, 12 ... shaping air 2 ... concentric slits 3, 4 ... accompanying airflow 5, 6 ... atomized paint particle group 7 ... ····· Rotary bell type coating machine main body ········································································································································································· Capillary tube 13 Bellhead 14 First air amplifier 15 Second air amplifier

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 回転ベルにより塗料を霧化する塗装装置
であって、圧縮空気を吐出するリング状空気吐出部を有
する空気増幅器が、該回転ベルのベルヘッドの外周と該
リング状空気吐出部とが同心円状となり、かつ回転ベル
型塗装機本体と該空気増幅器との間に空気が自由に流通
できる空間を保持して設置されており、該リング状空気
吐出部からの圧縮空気の吐出によって回転ベルにより霧
化された塗料粒子の飛行方向を制御できるようにしてな
ることを特徴とする回転ベル型塗装装置。
1. A coating apparatus for atomizing paint by a rotating bell, wherein an air amplifier having a ring-shaped air discharging section for discharging compressed air includes an outer periphery of a bell head of the rotating bell and the ring-shaped air discharging section. Are arranged concentrically, and are installed so as to maintain a space through which air can freely flow between the rotary bell type coating machine main body and the air amplifier, and are rotated by discharging compressed air from the ring-shaped air discharging portion. A rotary bell type coating apparatus characterized in that the direction of flight of paint particles atomized by a bell can be controlled.
【請求項2】 上記空気増幅器が、多数の細管ノズルが
リング状に均等に配置された中空の金属リングを有し、
該細管ノズルから圧縮空気が噴出される構造を有する請
求項1記載の回転ベル型塗装装置。
2. The air amplifier has a hollow metal ring in which a number of capillary nozzles are evenly arranged in a ring shape.
2. The rotating bell type coating apparatus according to claim 1, wherein the coating apparatus has a structure in which compressed air is ejected from the capillary nozzle.
【請求項3】 上記空気増幅器が、多数の細管ノズルが
均等に配置された中空の金属リングを有し、該細管ノズ
ルから圧縮空気が噴出され、噴出された圧縮空気がリン
グ状スリットから吐出される構造を有する請求項1又は
2記載の回転ベル型塗装装置。
3. The air amplifier has a hollow metal ring in which a number of capillary nozzles are evenly arranged. Compressed air is ejected from the capillary nozzle, and the ejected compressed air is ejected from a ring-shaped slit. 3. The rotating bell type coating apparatus according to claim 1, wherein the coating apparatus has a structure.
JP11223200A 1999-08-06 1999-08-06 Rotary bell type coating device Pending JP2001046925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11223200A JP2001046925A (en) 1999-08-06 1999-08-06 Rotary bell type coating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11223200A JP2001046925A (en) 1999-08-06 1999-08-06 Rotary bell type coating device

Publications (1)

Publication Number Publication Date
JP2001046925A true JP2001046925A (en) 2001-02-20

Family

ID=16794370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11223200A Pending JP2001046925A (en) 1999-08-06 1999-08-06 Rotary bell type coating device

Country Status (1)

Country Link
JP (1) JP2001046925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009012025A2 (en) 2007-07-16 2009-01-22 Illinois Tool Works Inc. Shaping air and bell cup combination
CN116732993A (en) * 2023-08-15 2023-09-12 成都理工大学 Air-adjusting type concrete spraying device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009012025A2 (en) 2007-07-16 2009-01-22 Illinois Tool Works Inc. Shaping air and bell cup combination
WO2009012025A3 (en) * 2007-07-16 2009-07-23 Illinois Tool Works Shaping air and bell cup combination
CN116732993A (en) * 2023-08-15 2023-09-12 成都理工大学 Air-adjusting type concrete spraying device
CN116732993B (en) * 2023-08-15 2023-10-13 成都理工大学 Air-adjusting type concrete spraying device

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