JPH1071363A - Coating method of bumper - Google Patents
Coating method of bumperInfo
- Publication number
- JPH1071363A JPH1071363A JP23086496A JP23086496A JPH1071363A JP H1071363 A JPH1071363 A JP H1071363A JP 23086496 A JP23086496 A JP 23086496A JP 23086496 A JP23086496 A JP 23086496A JP H1071363 A JPH1071363 A JP H1071363A
- Authority
- JP
- Japan
- Prior art keywords
- air
- coating
- bumper
- rotary atomizing
- annular 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.)
- Granted
Links
Landscapes
- 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、回転霧化頭の周囲
に多重に形成された環状エア噴出口から選択的にエアを
噴射して凹凸状複雑形状部位を有したバンパを塗装する
バンパの塗装方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper for coating a bumper having an irregularly complex portion by selectively jetting air from annular air outlets formed in multiple layers around a rotary atomizing head. Related to the painting method.
【０００２】[0002]
【従来の技術】一般的に、塗料、例えば、導電性塗料に
高電圧を直接印加して自動車車体等の被塗装物に静電塗
装を施す塗装装置として、回転霧化頭の先端縁から遠心
力の作用により塗料を放出する回転霧化式塗装装置が知
られている。2. Description of the Related Art Generally, a coating apparatus for applying a high voltage directly to a coating material, for example, a conductive coating material, to apply electrostatic coating to an object to be coated such as an automobile body, is centrifuged from a leading edge of a rotary atomizing head. 2. Description of the Related Art A rotary atomizing type coating apparatus which discharges a paint by the action of force is known.
【０００３】ところで、この種の回転霧化式塗装装置で
は、回転霧化頭から放出される塗料の塗布パターンの径
が比較的大きなものとなっている。このため、被塗装物
の形状が複雑化すると、この被塗装物の塗装必要部位に
対して塗料を確実に塗布することができないという不具
合があった。[0003] In this type of rotary atomizing type coating apparatus, the diameter of the coating pattern of the paint discharged from the rotary atomizing head is relatively large. For this reason, when the shape of the object to be coated becomes complicated, there is a problem in that the paint cannot be reliably applied to the portion of the object to be coated which requires coating.
【０００４】そこで、例えば、特開平７−２４３６７号
公報に開示されるように、霧化頭を取り付けた回転軸に
対して同心状に噴射方向の異なる複数列のシェーピング
エアを噴射可能とし、被塗装物の塗装部位に応じて各列
のシェーピングエアの噴射を制御することにより塗装パ
ターン幅を可変とする回転霧化静電塗装方法が知られて
いる。Therefore, as disclosed in, for example, Japanese Patent Application Laid-Open No. 7-24367, a plurality of rows of shaping air having different injection directions can be injected concentrically with respect to a rotary shaft having an atomizing head attached thereto. 2. Description of the Related Art There is known a rotary atomizing electrostatic coating method in which the width of a coating pattern is made variable by controlling the injection of shaping air in each row according to a coating portion of a coating object.
【０００５】具体的には、図８に示すように、霧化頭１
の外周にシェーピングエアノズル２が配設されており、
このシェーピングエアノズル２には、第１のエア通路３
に連通する多数の第１のエア吹き出し口４と、第２のエ
ア通路５に連通する多数の第２のエア吹き出し口６とが
形成されている。第１のエア吹き出し口４から噴射され
るシェーピングエアＡ１の噴射方向は、回転中心Ｏ１に
対してねじれ方向に設定される一方、第２のエア吹き出
し口６から噴射されるシェーピングエアＡ２の噴射方向
は、回転中心Ｏ１に対して平行に設定されている。従っ
て、シェーピングエアＡ１は、塗装パターン幅を大に確
保し、シェーピングエアＡ２は、塗装パターン幅を小に
確保する。[0005] Specifically, as shown in FIG.
The shaping air nozzle 2 is arranged on the outer periphery of
The shaping air nozzle 2 has a first air passage 3
Are formed, and a number of second air outlets 6 communicating with the second air passage 5 are formed. The ejection direction of the shaping air A1 ejected from the first air outlet 4 is set in a twisting direction with respect to the rotation center O1, while the ejection direction of the shaping air A2 ejected from the second air outlet 6 is set. Is set parallel to the rotation center O1. Therefore, the shaping air A1 secures a large paint pattern width, and the shaping air A2 secures a small paint pattern width.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
従来技術では、図８に示されるように、シェーピングエ
アＡ２の噴射方向が、霧化頭１の先端縁１ａに指向して
いる。このため、シェーピングエアＡ２が噴射されるこ
とによりシェーピングエアＡ１のねじれの効果が小さく
なっても、霧化頭１から放出される塗料の塗装パターン
幅を有効に縮小化することができない。従って、特に形
状の複雑な被塗装物に有効に適応させることが困難とな
っている。However, in the above prior art, as shown in FIG. 8, the jetting direction of the shaping air A2 is directed to the leading edge 1a of the atomizing head 1. For this reason, even if the effect of the twisting of the shaping air A1 is reduced by the injection of the shaping air A2, the width of the paint pattern of the paint discharged from the atomizing head 1 cannot be effectively reduced. Therefore, it is difficult to effectively adapt the method to an object having a complicated shape.
【０００７】これにより、図９に示す複雑形状部位を有
するバンパ７を塗装する際、平坦部位７ａの塗装作業に
はさほど支障がないものの、複雑形状部位である格子部
７ｂやモール部７ｃの奥まで塗料を有効に供給すること
ができない。この結果、図１０Ａおよび図１０Ｂに示す
ように、未塗布部８ａ、８ｂが形成されるとともに、エ
ッジ部分に塗料溜まり９ａ、９ｂが発生してしまい、高
品質な塗装作業を遂行することが困難となるという問題
が指摘されている。As a result, when coating the bumper 7 having the complicated shape portion shown in FIG. 9, the coating work of the flat portion 7a is not so hindered, but the back of the lattice portion 7b or the molding portion 7c which is the complicated shape portion. Until the paint can not be supplied effectively. As a result, as shown in FIGS. 10A and 10B, uncoated portions 8a and 8b are formed, and paint pools 9a and 9b are generated at the edge portions, making it difficult to perform high-quality coating work. Has been pointed out.
【０００８】本発明は、この種の問題を解決するもので
あり、複雑形状部位を有するバンパを高品質かつ効率的
に塗装することが可能なバンパの塗装方法を提供するこ
とを目的とする。An object of the present invention is to solve such a problem, and an object of the present invention is to provide a method of coating a bumper having a complicated shape portion with high quality and efficiently.
【０００９】[0009]
【課題を解決するための手段】前記の課題を解決するた
めに、本発明は、一つの環状エア噴出口のみからエアを
噴射することにより、このエアがシェーピングエアとし
て作用し、前記バンパの前記複雑形状部位以外の平坦部
位に塗装作業が施される。一方、前記一つの環状エア噴
出口からのエアに付加し、他の一つ以上の環状エア噴出
口から回転霧化頭先端縁前方に指向してエアを噴射する
ことにより、前記付加されたエアがアシストエアとして
作用する。従って、回転霧化頭から放出される塗料の塗
布パターン幅を有効に狭小化することができ、複雑形状
部位である格子部やモール部の奥まで前記塗料を有効に
供給するとともに、エッジ部分で塗料溜まりが発生する
ことを確実に阻止することが可能になる。In order to solve the above-mentioned problems, the present invention provides a method for injecting air from only one annular air outlet so that the air acts as shaping air, and Painting work is performed on a flat part other than the complicated shape part. On the other hand, the added air is added to the air from the one annular air jet port, and the air is jetted from one or more other annular air jet ports toward the front of the leading edge of the rotary atomizing head. Acts as assist air. Therefore, it is possible to effectively narrow the coating pattern width of the paint discharged from the rotary atomizing head, and to effectively supply the paint to the back of the lattice portion or the molding portion, which is a complex shape portion, and to reduce the edge portion at the edge portion. It is possible to reliably prevent the accumulation of paint from occurring.
【００１０】また、複雑形状部位では、放出される塗料
の塗布パターンの中心部の塗布速度が速くなるととも
に、該中心部の膜厚が厚くなる。そこで、複雑形状部位
の塗装時には、平坦部位に塗布される塗料の印加電圧よ
りも低い電圧が印加された状態乃至非印加状態で、塗料
が塗布される。このため、塗料の塗布速度の変化による
色調変化を有効に阻止することができる。[0010] In addition, in a complex-shaped portion, the coating speed of the central portion of the coating pattern of the paint to be released is increased, and the film thickness of the central portion is increased. Therefore, at the time of painting a complex-shaped portion, the paint is applied while a voltage lower than the applied voltage of the paint applied to the flat portion is applied or is not applied. Therefore, it is possible to effectively prevent a change in color tone due to a change in the application speed of the paint.
【００１１】[0011]
【発明の実施の形態】図１は、本発明の実施形態に係る
バンパの塗装方法を実施するための回転霧化式静電塗装
装置（静電塗装ガン）１０の概略内部構成説明図であ
り、図２は、前記回転霧化式静電塗装装置１０の概略側
面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic internal structural explanatory view of a rotary atomizing electrostatic coating apparatus (electrostatic coating gun) 10 for performing a bumper coating method according to an embodiment of the present invention. FIG. 2 is a schematic side view of the rotary atomizing electrostatic coating apparatus 10.
【００１２】回転霧化式静電塗装装置１０は、ケーシン
グ１２を備え、このケーシング１２内に配置されたモー
タ１４の回転軸１６の先端に回転霧化頭１８が取着され
る。回転軸１６は中空状に構成されており、その内部に
は、回転霧化頭１８の内周面に、塗料、例えば、導電性
塗料を供給するための塗料通路２０が形成される。The rotary atomizing type electrostatic coating apparatus 10 includes a casing 12, and a rotary atomizing head 18 is attached to a tip of a rotating shaft 16 of a motor 14 disposed in the casing 12. The rotating shaft 16 is formed in a hollow shape, and a paint passage 20 for supplying a paint, for example, a conductive paint, is formed on the inner peripheral surface of the rotary atomizing head 18 therein.
【００１３】ケーシング１２の先端には、回転霧化頭１
８を囲繞してシェーピングエアキャップ２２とアシスト
エアキャップ２４とが螺着される。シェーピングエアキ
ャップ２２の外周に、フランジ部２６を挟んで第１およ
び第２ねじ部２８ａ、２８ｂが設けられ、この第１ねじ
部２８ａがケーシング１２に螺合する一方、前記第２ね
じ部２８ｂがアシストエアキャップ２４の内周に形成さ
れたねじ部３０に螺合する。A rotary atomizing head 1 is provided at the tip of the casing 12.
A shaping air cap 22 and an assist air cap 24 are screwed around 8. First and second screw portions 28a, 28b are provided on the outer periphery of the shaping air cap 22 with the flange portion 26 interposed therebetween. The first screw portion 28a is screwed into the casing 12, while the second screw portion 28b is It is screwed into a screw portion 30 formed on the inner periphery of the assist air cap 24.
【００１４】シェーピングエアキャップ２２は、周方向
に所定角度ずつ離間して第１エア通路３２を有し、この
第１エア通路３２の一端側がケーシング１２内の図示し
ない通路を介してエア供給源に連通する。第１エア通路
３２の他端側が第１環状エア噴出口３４に連通するとと
もに、この第１環状エア噴出口３４は、回転霧化頭１８
の先端縁１８ａに指向して第１の環状エア３６Ａを噴射
するために、シェーピングエアキャップ２２の先端でリ
ング状に開口している。The shaping air cap 22 has a first air passage 32 spaced at a predetermined angle in the circumferential direction, and one end of the first air passage 32 is connected to an air supply source through a passage (not shown) in the casing 12. Communicate. The other end of the first air passage 32 communicates with the first annular air ejection port 34, and the first annular air ejection port 34 is connected to the rotary atomizing head 18.
In order to inject the first annular air 36A toward the tip edge 18a of the shaping air cap 22, the tip of the shaping air cap 22 is opened in a ring shape.
【００１５】アシストエアキャップ２４の外周には、所
定角度間隔ずつ離間して複数のポート３８が形成され、
このポート３８に連結された各管路４０は、図示しない
エア供給源に連通する。A plurality of ports 38 are formed on the outer periphery of the assist air cap 24 at predetermined angular intervals.
Each pipe 40 connected to the port 38 communicates with an air supply source (not shown).
【００１６】ポート３８には、第２エア通路４２を介し
て第２環状エア噴出口４４が連通する。第２環状エア噴
出口４４は、回転霧化頭１８の先端縁１８ａよりさらに
前方（図１中、先端縁１８ａから距離Ｈだけ前方の位
置）に指向しかつ回転軸１６の軸線Ｏに向かって収束す
る方向（角度α°だけ傾斜する方向）に第２の環状エア
４６Ａを噴射するために、シェーピングエアキャップ２
２の先端側外周とアシストエアキャップ２４の先端側内
周との間でリング状に構成されている。本実施形態で
は、第２環状エア噴出口４４が、軸線Ｏに向かって角度
α°として３０°または４５°だけ傾斜する方向に設定
されている。A second annular air outlet 44 communicates with the port 38 via a second air passage 42. The second annular air ejection port 44 is directed further forward (a position forward by a distance H from the leading edge 18 a in FIG. 1) toward the leading edge 18 a of the rotary atomizing head 18 and toward the axis O of the rotating shaft 16. In order to inject the second annular air 46A in a converging direction (a direction inclined by an angle α °), the shaping air cap 2
2 is formed in a ring shape between the outer circumference on the distal end side and the inner circumference on the distal end side of the assist air cap 24. In the present embodiment, the second annular air ejection port 44 is set in a direction inclined by 30 ° or 45 ° as the angle α ° toward the axis O.
【００１７】ケーシング１２内には、回転霧化頭１８か
ら放出される導電性塗料に静電気を帯電させるための高
電圧印加手段（図示せず）が収納されるとともに、この
ケーシング１２は、図示しない塗装ロボットのアームに
取着され、予め教示された軌跡に沿って移動される。The casing 12 accommodates a high-voltage applying means (not shown) for charging the conductive paint discharged from the rotary atomizing head 18 with static electricity, and the casing 12 is not shown. The robot is attached to the arm of the painting robot and moves along a trajectory taught in advance.
【００１８】このように構成される回転霧化式静電塗装
装置１０の動作について、本実施形態に係るバンパの塗
装方法との関連で以下に説明する。The operation of the rotary atomizing type electrostatic coating apparatus 10 thus configured will be described below in relation to the bumper coating method according to the present embodiment.
【００１９】先ず、導電性塗料が塗料通路２０を介して
回転霧化頭１８に供給され、この回転霧化頭１８がモー
タ１４の作用下に高速回転されるとともに、前記回転霧
化頭１８に供給される前記導電性塗料に図示しない高電
圧印加手段を介して高電圧が印加される。その際、図示
しないエア供給源を介して第１エア通路３２にエアが供
給されており、この第１エア通路３２に連通する第１環
状エア噴出口３４から回転霧化頭１８の先端縁１８ａに
指向して第１の環状エア３６Ａが噴射されている。First, a conductive paint is supplied to a rotary atomizing head 18 through a paint passage 20, and the rotary atomizing head 18 is rotated at a high speed under the action of a motor 14, and is applied to the rotary atomizing head 18. A high voltage is applied to the supplied conductive paint via high voltage applying means (not shown). At this time, air is supplied to the first air passage 32 via an air supply source (not shown), and the leading edge 18 a of the rotary atomizing head 18 is supplied from the first annular air ejection port 34 communicating with the first air passage 32. The first annular air 36 </ b> A is jetted in the direction of.
【００２０】従って、第１の環状エア３６Ａがシェーピ
ングエアとして作用し、回転霧化頭１８から放出される
導電性塗料が所定の塗布パターンＰ１（パターン径がＤ
１）でバンパ７に塗布される（図３Ａ参照）。このた
め、図４に示すように、静電気を帯電した導電性塗料が
霧化状態で塗布パターンＰ１を形成してバンパ７の平坦
部位７ａに噴霧され、この平坦部位７ａに静電塗装が行
われる。Therefore, the first annular air 36A acts as shaping air, and the conductive paint released from the rotary atomizing head 18 is coated with a predetermined coating pattern P1 (having a pattern diameter of D).
1) is applied to the bumper 7 (see FIG. 3A). Therefore, as shown in FIG. 4, a conductive paint charged with static electricity forms an application pattern P1 in an atomized state and is sprayed on the flat portion 7a of the bumper 7, and the flat portion 7a is subjected to electrostatic coating. .
【００２１】さらに、図示しないエア供給源を介して管
路４０にエアが供給されると、この管路４０に連通する
第２エア通路４２から第２環状エア噴出口４４にエアが
供給される。これにより、第２環状エア噴出口４４から
回転霧化頭１８の先端縁１８ａよりさらに前方に指向し
かつ回転軸１６の軸線Ｏに向かって収束する方向に第２
の環状エア４６Ａが噴射される。Further, when air is supplied to the conduit 40 via an air supply source (not shown), air is supplied from the second air passage 42 communicating with the conduit 40 to the second annular air ejection port 44. . As a result, the second annular air ejection port 44 is directed further forward from the leading edge 18 a of the rotary atomizing head 18 and is converged toward the axis O of the rotary shaft 16.
Is injected.
【００２２】第２の環状エア４６Ａは、アシストエアと
して作用し、回転霧化頭１８から放出される導電性塗料
のパターン幅を絞り込んで（パターン径がＤ１からＤ２
に縮径）、塗布パターンＰ２が得られる（図３Ｂ参
照）。導電性塗料は、塗布パターンＰ２でバンパ７の複
雑形状部位である格子部７ｂ、および塗布パターンＰ
２′でモール部７ｃに噴霧され、この格子部７ｂおよび
モール部７ｃの奥まで塗布される（図４参照）。The second annular air 46A acts as assist air to narrow the pattern width of the conductive paint discharged from the rotary atomizing head 18 (the pattern diameter is changed from D1 to D2).
The coating pattern P2 is obtained (see FIG. 3B). The conductive paint is applied to the grid portion 7b, which is a complex-shaped portion of the bumper 7 in the application pattern P2, and to the application pattern P
The spray is sprayed onto the molding 7c at 2 'and applied to the depths of the lattice 7b and the molding 7c (see FIG. 4).
【００２３】すなわち、第２の環状エア４６Ａを回転霧
化頭１８の先端縁１８ａに指向して噴射した際には、こ
の回転霧化頭１８から放出される導電性塗料のパターン
幅を絞り込むことができず、実際上、第１の環状エア３
６Ａのみを噴射したときと同様のパターン幅しか得られ
なかった。That is, when the second annular air 46A is jetted toward the leading edge 18a of the rotary atomizing head 18, the pattern width of the conductive paint released from the rotary atomizing head 18 is reduced. And the first annular air 3
Only the same pattern width as when only 6A was jetted was obtained.
【００２４】これに対して、本実施形態では、第２の環
状エア４６Ａを回転霧化頭１８の先端縁１８ａよりさら
に前方に指向しかつ回転軸１６の軸線Ｏに向かって収束
する方向に噴射することにより、図５に示すように、放
出される導電性塗料の塗布パターンＰ２の中心部の風速
（塗布速度）に比較してその周囲の風速が約１ｍ／ｓｅ
ｃ〜２ｍ／ｓｅｃも遅くなった。しかも、図６に示すよ
うに、第２の環状エア４６Ａを使用することにより、放
出される導電性塗料の塗布パターンＰ２の中心部の膜厚
が他の部分に比べて相当に厚くなった。On the other hand, in the present embodiment, the second annular air 46A is directed further forward than the tip edge 18a of the rotary atomizing head 18 and is converged toward the axis O of the rotary shaft 16. As a result, as shown in FIG. 5, the surrounding wind speed (applied speed) is about 1 m / sec as compared with the wind speed (coating speed) at the center of the discharged conductive paint application pattern P2.
c to 2 m / sec. In addition, as shown in FIG. 6, by using the second annular air 46A, the thickness of the central portion of the application pattern P2 of the conductive paint to be released is considerably thicker than other portions.
【００２５】従って、放出される導電性塗料のパターン
幅を大幅に絞ることができ、前記導電性塗料の塗布パタ
ーンＰ２（Ｐ２′）の中心部の風速を上げ、かつ膜厚を
厚くすることが可能になる。このため、形状の複雑な塗
装部位、例えば、格子部７ｂやモール部７ｃの奥まで導
電性塗料を有効に供給することができ、しかもエッジ部
分で塗料溜まりが発生することを確実に阻止し得るとい
う利点がある。Therefore, the pattern width of the conductive paint to be released can be greatly reduced, and the wind speed at the center of the conductive paint application pattern P2 (P2 ') can be increased and the film thickness can be increased. Will be possible. For this reason, the conductive paint can be effectively supplied to the coating portion having a complicated shape, for example, the back of the grid portion 7b or the molding portion 7c, and the occurrence of paint pool at the edge portion can be reliably prevented. There is an advantage.
【００２６】具体的に、第２の環状エア４６Ａを使用し
ない場合（以下、従来ガンという）と、この第２の環状
エア４６Ａを使用した場合（以下、実施ガンという）と
で、塗装状態を比較する実験を行った。従来ガンの塗装
条件は、第１の環状エア３６Ａが１０ｍ／ｓｅｃ、回転
数が３０，０００ｒｐｍ（２回目塗布時には、２０，０
００ｒｐｍ）で、吐出量が８２ｇ／ｍｉｎの２回塗り
で、印加電圧が６０ｋＶであり、実施ガンの塗装条件
は、上記の従来ガンの塗装条件に付加して、第２の環状
エア４６Ａによるアシスト圧が１ｋＰａに設定された。More specifically, the coating state is determined between the case where the second annular air 46A is not used (hereinafter referred to as a conventional gun) and the case where the second annular air 46A is used (hereinafter referred to as an execution gun). Experiments to compare were performed. The coating conditions of the conventional gun are as follows: the first annular air 36A is 10 m / sec, and the number of revolutions is 30,000 rpm (at the time of the second application, it is 20,000 rpm).
00 rpm), a discharge rate of 82 g / min is applied twice, and the applied voltage is 60 kV. The application conditions of the applied gun are the same as those of the conventional gun described above, and the second annular air 46A assists. The pressure was set at 1 kPa.
【００２７】この結果、従来ガンでは、図７Ａに示すよ
うに、ワークＳの平坦部位Ｓａに塗膜Ｐが形成された
が、その屈曲部（角度７０°）Ｓｂに導電性塗料が供給
されず、未塗装部位Ｒが存在してしまった。一方、実施
ガンでは、図７Ｂに示すように、ワークＳの平坦部位Ｓ
ａから屈曲部Ｓｂにわたって所望の塗膜Ｐが確実に形成
された。As a result, in the conventional gun, as shown in FIG. 7A, the coating film P was formed on the flat portion Sa of the work S, but the conductive paint was not supplied to the bent portion (angle 70 °) Sb. , An unpainted portion R exists. On the other hand, in the embodiment gun, as shown in FIG.
A desired coating film P was reliably formed from a to the bent portion Sb.
【００２８】また、第１の環状エア３６Ａに付加して第
２の環状エア４６Ａを噴射する際、導電性塗料には、前
記第１の環状エア３６Ａのみの噴射により平坦部位７ａ
に塗布される導電性塗料への印加電圧よりも低い電圧が
印加され、乃至は電圧の印加がなされないことが望まし
い。導電性塗料の塗布パターンＰ２では、その中心部の
風速が大きくなるため、印加電圧を低くし、乃至は非印
加状態に維持することにより、この導電性塗料の塗布速
度の変化による色調変化を有効に阻止する必要があるか
らである。When the second annular air 46A is jetted in addition to the first annular air 36A, the conductive paint is applied to the flat portion 7a by jetting only the first annular air 36A.
It is desirable that a voltage lower than the voltage applied to the conductive paint applied to the substrate be applied or no voltage be applied. In the conductive paint application pattern P2, since the wind speed at the center becomes large, the applied voltage is lowered or the non-applied state is maintained, so that the color tone change due to the change in the conductive paint application speed is effective. Because it is necessary to prevent it.
【００２９】これにより、本実施形態では、バンパ７を
高品質かつ効率的に塗装することが可能になるととも
に、第２の環状エア４６ＡによるエアアシストをＯＮ−
ＯＦＦ切替制御するだけで、種々の複雑な形状の塗装部
位に容易に対応し、汎用性に優れるという効果が得られ
る。Thus, in this embodiment, it is possible to paint the bumper 7 with high quality and efficiently, and to turn on the air assist by the second annular air 46A.
By simply performing the OFF switching control, it is possible to easily cope with various complicated shapes of the coating portion, and to obtain an effect of being excellent in versatility.
【００３０】[0030]
【発明の効果】以上のように、本発明に係るバンパの塗
装方法では、一つの環状エア噴出口から噴射されるエア
がシェーピングエアとして作用し、前記バンパの平坦部
位に塗装作業が施される。一方、前記一つの環状エア噴
出口からのエアに付加して他の一つ以上の環状エア噴出
口から噴射されるエアがアシストエアとして作用し、回
転霧化頭から放出される塗料の塗布パターン幅を有効に
狭小化することができる。As described above, in the method for coating a bumper according to the present invention, the air injected from one annular air outlet acts as shaping air, and the flat part of the bumper is coated. . On the other hand, in addition to the air from the one annular air jet, air jetted from the other one or more annular air jets acts as assist air, and the coating pattern of the paint discharged from the rotary atomizing head. The width can be effectively reduced.
【００３１】これにより、複雑形状部位である格子部や
モール部の奥まで塗料を有効に供給するとともに、エッ
ジ部分で塗料溜まりが発生することを確実に阻止するこ
とが可能になる。従って、複雑形状部位を有するバンパ
全体を高品質かつ効率的に塗装することが可能になると
ともに、汎用性に優れるという効果が得られる。This makes it possible to effectively supply the paint to the inside of the lattice portion or the molding portion, which is a complicated shape portion, and to reliably prevent the accumulation of paint at the edge portion. Therefore, it is possible to paint the entire bumper having a complicated shape portion with high quality and efficiently, and to obtain an effect of being excellent in versatility.
【図１】本発明の実施形態に係る回転霧化式静電塗装装
置の概略内部構成説明図である。FIG. 1 is a schematic internal configuration explanatory view of a rotary atomizing electrostatic coating apparatus according to an embodiment of the present invention.
【図２】前記回転霧化式静電塗装装置の概略側面図であ
る。FIG. 2 is a schematic side view of the rotary atomizing electrostatic coating apparatus.
【図３】前記回転霧化式静電塗装装置から放出される塗
料の塗布パターンの説明図であり、図３Ａは、シェーピ
ングエアのみの塗布パターンの説明図であり、図３Ｂ
は、アシストエアを噴射した際の塗布パターンの説明図
である。FIG. 3 is an explanatory diagram of an application pattern of a paint discharged from the rotary atomizing electrostatic coating device, and FIG. 3A is an explanatory diagram of an application pattern of only shaping air;
FIG. 4 is an explanatory diagram of a coating pattern when assist air is jetted.
【図４】前記回転霧化式静電塗装装置でバンパを塗装す
る際の説明図である。FIG. 4 is an explanatory diagram when a bumper is coated by the rotary atomizing electrostatic coating apparatus.
【図５】前記シェーピングエアのみの風速と、前記アシ
ストエアを付与した際の風速との関係図である。FIG. 5 is a relationship diagram between a wind speed of only the shaping air and a wind speed when the assist air is applied.
【図６】前記シェーピングエアのみの膜厚と、前記アシ
ストエアを付与した際の膜厚との関係図である。FIG. 6 is a relationship diagram between a film thickness of only the shaping air and a film thickness when the assist air is applied.
【図７】塗装状態を比較するための実験例であり、図７
Ａは、従来ガンによる塗装状態の説明図であり、図７Ｂ
は、実施ガンによる塗装状態の説明図である。FIG. 7 is an experimental example for comparing painting states, and FIG.
FIG. 7A is an explanatory view of a painting state using a conventional gun, and FIG.
FIG. 4 is an explanatory view of a painting state by an execution gun.
【図８】従来技術に係る塗装装置の概略構成説明図であ
る。FIG. 8 is a schematic configuration explanatory view of a coating apparatus according to a conventional technique.
【図９】被塗装物であるバンパの斜視説明図である。FIG. 9 is an explanatory perspective view of a bumper as an object to be coated.
【図１０】前記バンパの一部断面図であり、図１０Ａ
は、格子部の断面説明図であり、図１０Ｂは、モール部
の断面説明図である。FIG. 10 is a partial sectional view of the bumper, and FIG. 10A
FIG. 10B is an explanatory cross-sectional view of the lattice portion, and FIG. 10B is an explanatory cross-sectional view of the molding portion.
１０…回転霧化式静電塗装装置 １２…ケーシ
ング １６…回転軸 １８…回転霧
化頭 ２０…塗料通路 ２２…シェー
ピングエアキャップ ２４…アシストエアキャップ ３２…第１エ
ア通路 ３４…第１環状エア噴出口 ３６Ａ、４６
Ａ…環状エア ４０…管路 ４２…第２エ
ア通路 ４４…第２環状エア噴出口DESCRIPTION OF SYMBOLS 10 ... Rotary atomization type electrostatic coating apparatus 12 ... Casing 16 ... Rotary shaft 18 ... Rotary atomization head 20 ... Paint passage 22 ... Shaping air cap 24 ... Assist air cap 32 ... First air passage 34 ... First annular air jet Exit 36A, 46
A ... Annular air 40 ... Pipe line 42 ... Second air passage 44 ... Second annular air ejection port
Claims (2)
を噴射するための環状エア噴出口が多重に形成された回
転霧化式静電塗装ガンを用いて、凹凸状複雑形状部位を
有するバンパを塗装する塗装方法であって、 一つの環状エア噴出口のみからエアを噴射することによ
り、前記バンパの前記複雑形状部位以外の平坦部位に塗
装を施す一方、 前記一つの環状エア噴出口からのエアに付加し、前記回
転霧化頭の先端縁より前方に指向して他の一つ以上の環
状エア噴出口からエアを噴射することにより、前記回転
霧化頭から放出される前記塗料の塗布パターン幅をさら
に絞った状態で、前記バンパの前記複雑形状部位に塗装
を施すことを特徴とするバンパの塗装方法。The present invention relates to a rotary atomizing type electrostatic coating gun having a plurality of annular air jets for jetting air around a rotary atomizing head for discharging paint. A coating method for coating a bumper having a shape, wherein air is sprayed from only one annular air outlet to apply the coating to a flat portion other than the complex shape portion of the bumper; In addition to the air from the outlet, the air emitted from the rotary atomizing head is ejected by injecting air from one or more other annular air jets in a direction forward from the leading edge of the rotary atomizing head. A method of coating a bumper, further comprising applying a coating to the complex-shaped portion of the bumper with the coating pattern width of the paint further reduced.
料は、高電圧が印加された状態で前記バンパの前記複雑
形状部位以外の平坦部位に塗布される一方、 前記印加電圧よりも低い電圧が印加された状態乃至非印
加状態で、前記複雑形状部位に塗布されることを特徴と
するバンパの塗装方法。2. The coating method according to claim 1, wherein the paint is applied to a flat portion other than the complex shape portion of the bumper in a state where a high voltage is applied, while a voltage lower than the applied voltage is applied. A method for coating a bumper, wherein the method is applied to the complex-shaped portion in a state where the voltage is applied or not applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23086496A JP3828960B2 (en) | 1996-08-30 | 1996-08-30 | How to paint a bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23086496A JP3828960B2 (en) | 1996-08-30 | 1996-08-30 | How to paint a bumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1071363A true JPH1071363A (en) | 1998-03-17 |
| JP3828960B2 JP3828960B2 (en) | 2006-10-04 |
Family
ID=16914508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23086496A Expired - Lifetime JP3828960B2 (en) | 1996-08-30 | 1996-08-30 | How to paint a bumper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3828960B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005115636A1 (en) * | 2004-05-27 | 2005-12-08 | Abb K.K. | Method for controlling spray pattern of rotary atomizing head type coating device and rotary atomizing head type coating device |
| JP2011212631A (en) * | 2010-04-01 | 2011-10-27 | Honda Motor Co Ltd | Electrostatic coating apparatus |
| JP2011212633A (en) * | 2010-04-01 | 2011-10-27 | Honda Motor Co Ltd | Electrostatic coating apparatus |
| CN103302014A (en) * | 2013-06-21 | 2013-09-18 | 昆明方大春鹰板簧有限公司 | Electrostatic spraying production technology of vehicular steel plate spring paint |
-
1996
- 1996-08-30 JP JP23086496A patent/JP3828960B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005115636A1 (en) * | 2004-05-27 | 2005-12-08 | Abb K.K. | Method for controlling spray pattern of rotary atomizing head type coating device and rotary atomizing head type coating device |
| JP2011212631A (en) * | 2010-04-01 | 2011-10-27 | Honda Motor Co Ltd | Electrostatic coating apparatus |
| JP2011212633A (en) * | 2010-04-01 | 2011-10-27 | Honda Motor Co Ltd | Electrostatic coating apparatus |
| CN103302014A (en) * | 2013-06-21 | 2013-09-18 | 昆明方大春鹰板簧有限公司 | Electrostatic spraying production technology of vehicular steel plate spring paint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3828960B2 (en) | 2006-10-04 |
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