JP3575290B2 - Rotary atomizing coating machine and rotary atomizing coating method - Google Patents

Rotary atomizing coating machine and rotary atomizing coating method Download PDF

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Publication number
JP3575290B2
JP3575290B2 JP24303998A JP24303998A JP3575290B2 JP 3575290 B2 JP3575290 B2 JP 3575290B2 JP 24303998 A JP24303998 A JP 24303998A JP 24303998 A JP24303998 A JP 24303998A JP 3575290 B2 JP3575290 B2 JP 3575290B2
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Prior art keywords
shaping air
coating
atomizing head
air outlet
atomizing
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JP2000070769A (en
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山崎　　勇
政志 村手
真二 谷
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Toyota Motor Corp
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Toyota Motor Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1064—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403—Discharge 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
    • B05B5/0407—Discharge 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0426—Means for supplying shaping gas

Description

【０００１】
【発明の属する技術分野】
本発明は、回転霧化塗装機および回転霧化塗装方法に関する。
【０００２】
【従来の技術】
メタリック塗装の明度を高めるために、霧化頭の前端縁に向けて吐出されるシェーピングエアの吹き出し口を備えたメタリック（仕上げ）塗装用の回転霧化塗装機が、たとえば、特開平３−１０１８５８号に開示されている。
【０００３】
【発明が解決しようとする課題】
しかし、従来のメタリック（仕上げ）塗装用の回転霧化塗装機では、シェーピングエアのエア圧（流量）の変動に対して敏感にパターン（噴霧領域）が変わる。そのため、従来のメタリック塗装用の回転霧化塗装機を、メタリック塗料の塗装後に行うクリア塗料の塗装などの一般面塗装に使用することは、塗装品質上好ましくない。
本発明の目的は、１台の回転霧化塗装機でメタリック（仕上げ）塗装および一般面塗装を塗装品質を損なわずに行うことができる、回転霧化塗装機および回転霧化塗装方法を提供することにある。
【０００４】
【課題を解決するための手段】
上記目的を達成する本発明は、つぎの通りである。
（１） 回転軸に取り付けられて回転軸と一体に回転可能なカップ状の霧化頭と、該霧化頭の前端より後方から霧化頭の後面に向かってシェーピングエアを吹き出す第１のシェーピングエア吹き出し口と、該第１のシェーピングエア吹き出し口より前方に設けられ前記霧化頭の前端より後方から霧化頭の前端縁に向かってシェーピングエアを吹き出す第２のシェーピングエア吹き出し口と、を有する回転霧化塗装機。
（２） 回転軸に取り付けられて回転軸と一体に回転可能なカップ状の霧化頭と、該霧化頭の前端より後方から霧化頭の後面に向かってシェーピングエアを吹き出す第１のシェーピングエア吹き出し口と、該第１のシェーピングエア吹き出し口より前方に設けられ前記霧化頭の前端より後方から霧化頭の前端縁に向かってシェーピングエアを吹き出す第２のシェーピングエア吹き出し口と、を有する回転霧化塗装機を用いて一般面塗装もしくはメタリック塗装を行う回転霧化塗装方法であって、
一般面塗装時には、第１のシェーピングエア吹き出し口からのみシェーピングエアが吹き出され、
メタリック塗装時には、少なくとも第２のシェーピングエア吹き出し口からシェーピングエアが吹き出されることを特徴とする、
回転霧化塗装方法。
【０００５】
上記（１）の回転霧化塗装機と（２）の回転霧化塗装方法では、一般面塗装時には第１のシェーピングエア吹き出し口からのみ霧化頭の後面に向けてシェーピングエアが吹き出すので均一なパターンが得られ、メタリック塗装時には少なくとも第２のシェーピングエア吹き出し口から霧化頭の前端縁に向けてシェーピングエアが吹き出すので高い明度の塗膜が得られ、１台の回転霧化塗装機で一般面塗装とメタリック塗装を塗装品質を損なわずに行うことができる。
【０００６】
【発明の実施の形態】
図１は本発明実施例の回転霧化塗装機を示し、図２は本発明実施例の回転霧化塗装機のシェーピングエアの吹き出し方法の例を示す。
【０００７】
まず、本発明実施例の回転霧化塗装機を、図１を参照して、説明する。
本発明実施例の回転霧化塗装機１は、軸方向に延びるハウジング２を有している。ハウジング２内には、回転軸３を回転させる図示されないエアモータが収納されている。
【０００８】
回転軸３は先端に、霧化頭４が取り付けられている。回転軸３には、軸方向に延びる中空部が形成されており、中空部には霧化頭４へ塗料を供給する塗料フィードチューブ５が配置されている。
【０００９】
霧化頭４はカップ状部４ａとカップ状部４ａの後端に連通して後方に延びる管状部４ｂとからなる。カップ状部４ａの内面には、円盤状のハブ４ｃが設けられている。ハブ４ｃの後面は中央が後方に向かって突出した円錐状とされている。ハブ４ｃは外周縁に塗料吐出孔４ｄを有し、中央にクリーニング用孔４ｅを有する。塗料は塗料フィードチューブ５から、回転軸３の回転によって高速回転している霧化頭４のハブ後面に供給され、塗料吐出孔４ｄを通過し、霧化頭４の前端縁から放出される。
【００１０】
ハウジング２内には、図示されない高電圧発生器が配置されている。高電圧発生器により発生された高電圧は、回転軸３を介して霧化頭４に印加され、霧化頭４から放出される塗料に印加される。
【００１１】
霧化頭４の径方向外側には、霧化頭４の径方向外側の周を覆う環状のエアキャップ６が配設されている。エアキャップ６はハウジング２の前端部に固定されている。エアキャップ６には周方向に複数の第１のシェーピングエア吹き出し口７と複数の第２のシェーピングエア吹き出し口８が形成されている。
各第１のシェーピングエア吹き出し口７は、霧化頭４の前端より後方で、回転軸３の回転軸芯を中心として同心上に配置されている。第１のシェーピングエア吹き出し口７からはシェーピングエアＳＡ１が、霧化頭の後面に向かって軸方向に吹き出され、霧化頭４から放出される塗料を霧化する。
各第２のシェーピングエア吹き出し口８は、第１のシェーピングエア吹き出し口７より前方で、第１のシェーピングエア吹き出し口７よりも径方向外側で、回転軸３の回転軸芯を中心として同心上に配置されている。第２のシェーピングエア吹き出し口８からはシェーピングエアＳＡ２が、霧化頭の前端縁に向かって軸方向に対して所定角度捩じる方向に吹き出され、霧化頭４から放出される塗料を霧化する。
第１のシェーピングエア吹き出し口７は第１のシェーピングエア経路１７に連通し、第２のシェーピングエア吹き出し口８は第２のシェーピングエア経路１８に連通している。
【００１２】
つぎに、上記の回転霧化塗装機を用いて回転霧化塗装を行う方法を、たとえば、自動車の外板を塗装する方法を例にとって、図１、図２を参照して、説明する。なお、回転霧化塗装方法は、上記の回転霧化塗装機の作用でもある。
自動車の外板の塗装は、おもに、下塗り、中塗り、上塗りの工程に分けられる。以下には、本発明実施例の回転霧化塗装機が上塗り工程で使用される場合について示している。
上塗り工程では、たとえば、ソリッド塗装と、メタリック塗装が施される。ソリッド塗装では、ソリッド塗料が塗装されて１層のソリッド層が形成される。メタリック塗装では、メタリックベース塗料がたとえば２回に分けて塗装され、その上にクリア塗料が塗装されるので、２層のメタリックベース層とクリア層が形成される。
メタリック塗装の場合、クリア層の直下のメタリックベース層が形成される（メタリック仕上げ塗装）時に、メタリックベース塗料中に含有されているアルミ粉が被塗装物面に対して水平に配向されると、高い塗膜明度が得られる。したがって、メタリック仕上げ塗装では、メタリックベース塗料が速い速度で被塗装物面に向かって飛行することが望まれる。
メタリック仕上げ塗装以外の一般面塗装（たとえば、ソリッド塗装、クリア塗装、メタリックベースの一層めの塗装など）では、大きいパターン（噴霧領域）で均一に塗装が行われることが望まれる。
【００１３】
被塗装物が塗装位置である所定位置に搬送され、一般面塗装である、たとえばソリッド塗装が行われるときには、本発明実施例の回転霧化塗装機１の第１のシェーピングエア吹き出し口７のみからシェーピングエアＳＡ１が吹き出され、第２のシェーピングエア吹き出し口８からはシェーピングエアＳＡ２は吹き出されない。
第１のシェーピングエア吹き出し口７から軸方向に吹き出されたシェーピングエアＳＡ１は霧化頭４の後面に当たり、霧化頭４の前端縁に向かって流れる。そして、シェーピングエアＳＡ１は、回転軸３と一体に回転している霧化頭４の前端縁から放出され、高電圧が印加されている塗料を霧化する。シェーピングエアＳＡ１が霧化頭４の後面に当たることから、大きなパターンが形成され、シェーピングエア圧（エア量）が変化しても、一定のパターンが安定して得られる。また、第１のシェーピングエア吹き出し口７は、第２のシェーピングエア吹き出し口８より後方にあり、霧化頭４の後面から離れているので、均一なパターンが得られやすい。
【００１４】
被塗装物が塗装位置である所定位置に搬送され、メタリック仕上げ塗装が行われるときには、少なくとも第２のシェーピングエア吹き出し口８からシェーピングエアＳＡ２が吹き出される。
第２のシェーピングエア吹き出し口８から軸方向に対して捩じり方向に吹き出されたシェーピングエアＳＡ２は、霧化頭４の前端縁に当たり、回転軸３と一体に回転している霧化頭４の前端縁から放出されると同時に高電圧が印加される塗料を霧化し、速いスピードで被塗装物に向かって塗料を飛行させる。そのため、メタリックベース中のアルミ粉が被塗装物面とほぼ水平に配向され、高い明度が得られる。シェーピングエアＳＡ２が霧化頭４の前端縁に当たることから、塗料の微粒化が促進される。また、霧化頭の汚れは少ない。
シェーピングエアＳＡ２が吹き出されている時に、第１のシェーピングエア吹き出し口７からシェーピングエアＳＡ１が吹き出されても、あるいは吹き出されなくてもよい。第１のシェーピングエア吹き出し口７からシェーピングエアＳＡ１が吹き出されている場合のほうが、シェーピングエアＳＡ１が吹き出されていない場合のパターン（標準パターン）に比べて、パターンが大きくなり（拡大パターン）生産性が向上する。また、塗装ムラが少ない。
【００１５】
したがって、本発明実施例の、第１のシェーピングエア吹き出し口７と第２のシェーピングエア吹き出し口８を有する回転霧化塗装機１を用いて回転霧化塗装を行う場合には、必要に応じてシェーピングエアの吹き出し口を選択することにより、塗装品質を損なうことなく、一般面塗装もしくはメタリック仕上げ塗装を行うことができる。
【００１６】
なお、メタリック仕上げ塗装時に第１のシェーピングエア吹き出し口７から吹き出されるシェーピングエアＳＡ１のエア圧は、一般面塗装時に第１のシェーピングエア吹き出し口７から吹き出されるシェーピングエアＳＡ１のエア圧より高くされる。
また、メタリック仕上げ塗装時に第１のシェーピングエア吹き出し口７と第２のシェーピングエア吹き出し口８から同時にシェーピングエアＳＡ１、ＳＡ２が吹き出されるときには、第１のシェーピングエア吹き出し口７から吹き出されるシェーピングエアＳＡ１よりも第２のシェーピングエア吹き出し口８から吹き出されるシェーピングエアＳＡ２のほうがエア圧が高くされる。
【００１７】
【発明の効果】
本発明の回転霧化塗装機および回転霧化塗装方法によれば、一般面塗装時には第１のシェーピングエア吹き出し口のみからシェーピングエアを吹き出し、メタリック塗装時には少なくとも第２のシェーピングエア吹き出し口からシェーピングエアを吹き出すことにより、１台の回転霧化塗装機で一般面塗装とメタリック塗装を、塗装品質を損なうことなく行うことができる。
【図面の簡単な説明】
【図１】本発明実施例の回転霧化塗装機の部分断面図である。
【図２】本発明実施例の回転霧化塗装機のシェーピングエアの吹き出し方法を示す図である。
【符号の説明】
１ 回転霧化塗装機
３ 回転軸
４ 霧化頭
７ 第１のシェーピングエア吹き出し口
８ 第２のシェーピングエア吹き出し口[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotary atomizing coating machine and a rotary atomizing coating method.
[0002]
[Prior art]
In order to increase the brightness of the metallic coating, a rotary atomizing coating machine for metallic (finishing) coating provided with an outlet for shaping air discharged toward the front edge of the atomizing head is disclosed in, for example, JP-A-3-101858. Issue.
[0003]
[Problems to be solved by the invention]
However, in a conventional rotary atomizing coating machine for metallic (finishing) coating, a pattern (spray area) changes sensitively to a change in air pressure (flow rate) of shaping air. For this reason, it is not preferable in terms of coating quality to use a conventional rotary atomizing coating machine for metallic coating for general surface coating such as clear coating applied after metallic coating.
An object of the present invention is to provide a rotary atomizing coating machine and a rotary atomizing coating method that can perform metallic (finishing) coating and general surface coating with one rotary atomizing coating machine without impairing coating quality. It is in.
[0004]
[Means for Solving the Problems]
The present invention that achieves the above object is as follows.
(1) A cup-shaped atomizing head attached to a rotating shaft and rotatable integrally with the rotating shaft, and first shaping for blowing shaping air from behind the front end of the atomizing head toward the rear surface of the atomizing head. An air outlet, and a second shaping air outlet which is provided in front of the first shaping air outlet and blows out shaping air from behind the front end of the atomizing head toward the front end edge of the atomizing head. Has a rotary atomizing coating machine.
(2) A cup-shaped atomizing head attached to the rotating shaft and rotatable integrally with the rotating shaft, and first shaping for blowing shaping air from behind the front end of the atomizing head toward the rear surface of the atomizing head. An air outlet, and a second shaping air outlet which is provided in front of the first shaping air outlet and blows out shaping air from behind the front end of the atomizing head toward the front end edge of the atomizing head. A rotary atomization coating method for performing general surface coating or metallic coating using a rotary atomization coating machine having
At the time of general surface painting, shaping air is blown out only from the first shaping air blowout port,
At the time of metallic coating, shaping air is blown out from at least the second shaping air blowout port,
Rotary atomization coating method.
[0005]
In the rotary atomizing coating machine of the above (1) and the rotary atomizing coating method of the above (2), uniform shaping air is blown toward the rear face of the atomizing head only from the first shaping air outlet during general surface coating. A pattern is obtained, and at the time of metallic coating, at least the second shaping air outlet blows out the shaping air toward the front edge of the atomizing head, so that a high brightness coating film is obtained. Surface coating and metallic coating can be performed without impairing coating quality.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a rotary atomizing coating machine according to an embodiment of the present invention, and FIG.
[0007]
First, a rotary atomizing coating machine according to an embodiment of the present invention will be described with reference to FIG.
The rotary atomizer 1 according to the embodiment of the present invention has a housing 2 extending in the axial direction. An air motor (not shown) for rotating the rotating shaft 3 is housed in the housing 2.
[0008]
An atomizing head 4 is attached to the tip of the rotating shaft 3. A hollow portion extending in the axial direction is formed in the rotating shaft 3, and a paint feed tube 5 that supplies paint to the atomizing head 4 is disposed in the hollow portion.
[0009]
The atomizing head 4 is composed of a cup-shaped portion 4a and a tubular portion 4b communicating with the rear end of the cup-shaped portion 4a and extending rearward. A disc-shaped hub 4c is provided on the inner surface of the cup-shaped portion 4a. The rear surface of the hub 4c has a conical shape whose center projects rearward. The hub 4c has a paint discharge hole 4d at the outer peripheral edge and a cleaning hole 4e at the center. The paint is supplied from the paint feed tube 5 to the rear surface of the hub of the atomizing head 4 rotating at a high speed by the rotation of the rotating shaft 3, passes through the paint discharge hole 4 d, and is discharged from the front edge of the atomizing head 4.
[0010]
A high voltage generator (not shown) is arranged in the housing 2. The high voltage generated by the high voltage generator is applied to the atomizing head 4 via the rotating shaft 3 and is applied to the paint discharged from the atomizing head 4.
[0011]
An annular air cap 6 that covers the outer circumference of the atomizing head 4 in the radial direction is disposed radially outside the atomizing head 4. The air cap 6 is fixed to the front end of the housing 2. A plurality of first shaping air outlets 7 and a plurality of second shaping air outlets 8 are formed in the air cap 6 in the circumferential direction.
Each of the first shaping air outlets 7 is disposed concentrically about the rotation axis of the rotation shaft 3 behind the front end of the atomization head 4. From the first shaping air outlet 7, shaping air SA1 is blown in the axial direction toward the rear surface of the atomizing head to atomize the paint discharged from the atomizing head 4.
Each second shaping air outlet 8 is located forward of the first shaping air outlet 7, radially outside of the first shaping air outlet 7, and concentrically about the rotation axis of the rotating shaft 3. Are located in From the second shaping air outlet 8, shaping air SA2 is blown toward the front edge of the atomizing head in a direction twisting at a predetermined angle with respect to the axial direction, and the paint released from the atomizing head 4 is atomized. Become
The first shaping air outlet 7 communicates with a first shaping air passage 17, and the second shaping air outlet 8 communicates with a second shaping air passage 18.
[0012]
Next, a method of performing the rotary atomization coating using the above-described rotary atomization coating machine will be described with reference to FIGS. 1 and 2 by taking, for example, a method of coating an outer plate of an automobile. In addition, the rotary atomizing coating method is also an operation of the rotary atomizing coating machine described above.
The coating of automobile outer panels is mainly divided into undercoating, intermediate coating, and topcoating processes. Hereinafter, the case where the rotary atomizing coating machine of the embodiment of the present invention is used in the overcoating step is shown.
In the overcoating step, for example, solid coating and metallic coating are performed. In the solid coating, a solid coating is applied to form one solid layer. In the metallic coating, a metallic base paint is applied, for example, in two steps, and a clear paint is applied thereon, so that two metallic base layers and a clear layer are formed.
In the case of metallic coating, when the metallic base layer immediately below the clear layer is formed (metallic finish coating), when the aluminum powder contained in the metallic base paint is oriented horizontally to the surface of the workpiece, High coating brightness can be obtained. Therefore, in the metallic finish coating, it is desired that the metallic base paint fly at a high speed toward the surface of the object to be coated.
In general surface coating other than the metallic finish coating (for example, solid coating, clear coating, first-layer coating of a metallic base, etc.), it is desired that the coating be performed uniformly in a large pattern (spray area).
[0013]
When an object to be coated is conveyed to a predetermined position, which is a coating position, and is a general surface coating, for example, when solid coating is performed, only the first shaping air outlet 7 of the rotary atomizing coating machine 1 of the embodiment of the present invention is used. The shaping air SA1 is blown out, and the shaping air SA2 is not blown out from the second shaping air outlet 8.
The shaping air SA1 blown in the axial direction from the first shaping air outlet 7 hits the rear surface of the atomizing head 4 and flows toward the front edge of the atomizing head 4. The shaping air SA1 is emitted from the front end of the atomizing head 4 rotating integrally with the rotating shaft 3, and atomizes the paint to which a high voltage is applied. Since the shaping air SA1 hits the rear surface of the atomizing head 4, a large pattern is formed, and even if the shaping air pressure (air amount) changes, a constant pattern can be stably obtained. Further, since the first shaping air outlet 7 is located behind the second shaping air outlet 8 and is separated from the rear surface of the atomizing head 4, a uniform pattern is easily obtained.
[0014]
When the object to be coated is transported to a predetermined position, which is a coating position, and the metallic finish coating is performed, at least the shaping air SA2 is blown out from the second shaping air blowout port 8.
The shaping air SA2 blown out from the second shaping air outlet 8 in the torsional direction with respect to the axial direction hits the front end of the atomizing head 4, and the atomizing head 4 rotating integrally with the rotary shaft 3. The high-voltage applied paint is simultaneously atomized from the front edge of the paint, and the paint is caused to fly at a high speed toward the workpiece. Therefore, the aluminum powder in the metallic base is oriented almost horizontally with the surface of the object to be coated, and high brightness can be obtained. Since the shaping air SA2 hits the front edge of the atomizing head 4, atomization of the paint is promoted. The dirt on the atomization head is small.
When the shaping air SA2 is being blown out, the shaping air SA1 may or may not be blown out from the first shaping air blowout port 7. The pattern in which the shaping air SA1 is blown out from the first shaping air outlet 7 is larger (enlarged pattern) than the pattern in which the shaping air SA1 is not blown out (standard pattern). Is improved. Also, there is little uneven coating.
[0015]
Therefore, when the rotary atomizing coating is performed using the rotary atomizing coating machine 1 having the first shaping air outlet 7 and the second shaping air outlet 8 according to the embodiment of the present invention, it is necessary. By selecting the outlet of the shaping air, it is possible to perform general surface painting or metallic finish painting without impairing the painting quality.
[0016]
The air pressure of the shaping air SA1 blown out from the first shaping air blowout port 7 during the metallic finish coating is higher than the air pressure of the shaping air SA1 blown out from the first shaping air blowout port 7 during the general surface coating. Be killed.
When the shaping air SA1 and SA2 are simultaneously blown from the first shaping air outlet 7 and the second shaping air outlet 8 at the time of the metallic finish coating, the shaping air blown from the first shaping air outlet 7 is used. The shaping air SA2 blown out from the second shaping air outlet 8 has a higher air pressure than the SA1.
[0017]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the rotary atomization coating machine and the rotary atomization coating method of this invention, shaping air is blown out only from the first shaping air outlet at the time of general surface coating, and at least the second shaping air outlet at the time of metallic coating. The general surface coating and the metallic coating can be performed by one rotary atomizing coating machine without impairing the coating quality.
[Brief description of the drawings]
FIG. 1 is a partial sectional view of a rotary atomizing coating machine according to an embodiment of the present invention.
FIG. 2 is a view showing a method of blowing out shaping air of the rotary atomizing coating machine according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotary atomizing coating machine 3 Rotary shaft 4 Atomizing head 7 First shaping air outlet 8 Second shaping air outlet

Claims (2)

回転軸に取り付けられて回転軸と一体に回転可能なカップ状の霧化頭と、該霧化頭の前端より後方から霧化頭の後面に向かってシェーピングエアを吹き出す第１のシェーピングエア吹き出し口と、該第１のシェーピングエア吹き出し口より前方に設けられ前記霧化頭の前端より後方から霧化頭の前端縁に向かってシェーピングエアを吹き出す第２のシェーピングエア吹き出し口と、を有する回転霧化塗装機。A cup-shaped atomizing head attached to the rotating shaft and rotatable integrally with the rotating shaft; and a first shaping air outlet for blowing shaping air from behind the front end of the atomizing head toward the rear surface of the atomizing head. And a second shaping air outlet provided forward of the first shaping air outlet and blowing shaping air from behind the front end of the atomizing head toward the front end edge of the atomizing head. Chemical coating machine. 回転軸に取り付けられて回転軸と一体に回転可能なカップ状の霧化頭と、該霧化頭の前端より後方から霧化頭の後面に向かってシェーピングエアを吹き出す第１のシェーピングエア吹き出し口と、該第１のシェーピングエア吹き出し口より前方に設けられ前記霧化頭の前端より後方から霧化頭の前端縁に向かってシェーピングエアを吹き出す第２のシェーピングエア吹き出し口と、を有する回転霧化塗装機を用いて一般面塗装もしくはメタリック塗装を行う回転霧化塗装方法であって、
一般面塗装時には、第１のシェーピングエア吹き出し口からのみシェーピングエアが吹き出され、
メタリック塗装時には、少なくとも第２のシェーピングエア吹き出し口からシェーピングエアが吹き出されることを特徴とする、
回転霧化塗装方法。A cup-shaped atomizing head attached to the rotating shaft and rotatable integrally with the rotating shaft; and a first shaping air outlet for blowing shaping air from behind the front end of the atomizing head toward the rear surface of the atomizing head. And a second shaping air outlet provided forward of the first shaping air outlet and blowing shaping air from behind the front end of the atomizing head toward the front end edge of the atomizing head. A rotary atomization coating method that performs general surface coating or metallic coating using a chemical coating machine,
At the time of general surface painting, shaping air is blown out only from the first shaping air blowout port,
At the time of metallic coating, shaping air is blown out from at least the second shaping air blowout port,
Rotary atomization coating method.
JP24303998A 1998-08-28 1998-08-28 Rotary atomizing coating machine and rotary atomizing coating method Expired - Fee Related JP3575290B2 (en)

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JP4843257B2 (en) * 2005-06-06 2011-12-21 トリニティ工業株式会社 Air control valve and painting system
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DE102008027997A1 (en) 2008-06-12 2009-12-24 Dürr Systems GmbH Universalzerstäuber
FR2989289B1 (en) 2012-04-13 2015-07-17 Sames Technologies ROTARY PROJECTOR AND METHOD FOR SPRAYING A COATING PRODUCT
JP5681779B1 (en) 2013-11-08 2015-03-11 ランズバーグ・インダストリー株式会社 Electrostatic coating machine
US10343178B2 (en) * 2014-01-29 2019-07-09 Honda Motor Co., Ltd. Rotary atomizing coating device and spray head

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