JPS5820661B2 - electrostatic painting equipment - Google Patents
electrostatic painting equipmentInfo
- Publication number
- JPS5820661B2 JPS5820661B2 JP1255276A JP1255276A JPS5820661B2 JP S5820661 B2 JPS5820661 B2 JP S5820661B2 JP 1255276 A JP1255276 A JP 1255276A JP 1255276 A JP1255276 A JP 1255276A JP S5820661 B2 JPS5820661 B2 JP S5820661B2
- Authority
- JP
- Japan
- Prior art keywords
- rotary cup
- paint
- cup
- protrusion
- inner circumferential
- 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.)
- Expired
Links
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Description
【発明の詳細な説明】
本発明は静電塗装装置に関するものであり、その目的と
するところは供給された液体塗料を回転カップの先端に
供給する際に均一で薄膜状に供給して霧化を促進しやす
くし、かつ液体塗料を霧化するに際して霧化粒子を微細
化し、良好な塗装仕上面を得られるようにするとともに
塗装作業の効率を向上することができる静電塗装装置を
得るにある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic coating device, and its purpose is to supply a uniform, thin film of liquid paint to the tip of a rotating cup and atomize it. To obtain an electrostatic coating device that facilitates the promotion of coating, makes atomized particles finer when atomizing liquid paint, enables a good painted surface to be obtained, and improves the efficiency of coating work. be.
以下本発明の一実施例を図面により詳述する。An embodiment of the present invention will be described in detail below with reference to the drawings.
３は筒状金属製の回転カップであって、やや後部寄りの
内周面１に円盤状の基体７が一体に設けられ、この基体
７にて回転カップ３内部を前部室と後部室とに区割され
ており且つ基体７に設けたトンネル部８・・・・・・に
て回転カップ３の前部と後部との内周面１が連続してい
る。Reference numeral 3 denotes a rotating cup made of cylindrical metal, and a disk-shaped base 7 is integrally provided on the inner circumferential surface 1 slightly toward the rear, and this base 7 divides the inside of the rotary cup 3 into a front chamber and a rear chamber. The inner circumferential surfaces 1 of the front and rear parts of the rotary cup 3 are continuous through a tunnel part 8 which is divided and provided in the base body 7.
基体１の後面中央からは回転軸９が導出され、この回転
軸９後端はエアモータ１０の出力軸に連結された軸体１
１に連結される。A rotating shaft 9 is led out from the center of the rear surface of the base body 1, and the rear end of this rotating shaft 9 is connected to the shaft body 1 connected to the output shaft of an air motor 10.
1.
また回転カップ３の先部内周面には全周に亘って環状の
突出部４を一体的に突設し、回転カップ３の先端が尖鋭
になるように突出部４の前方端面４ａ、つまり回転カッ
プ３の先部側の端面は回転カップ３の中心軸に対して前
方へ広がるように凹曲傾斜面としており、この凹曲傾斜
面は回転カップ３先端に連続形成している。Further, an annular protrusion 4 is integrally provided on the inner peripheral surface of the tip of the rotary cup 3 over the entire circumference, and the front end surface 4a of the protrusion 4, that is, the rotation The end face on the tip side of the cup 3 is a concavely curved inclined surface so as to expand forward with respect to the central axis of the rotating cup 3, and this concavely curved inclined surface is continuously formed at the tip of the rotating cup 3.
またこの突出部４に後側に接する回転カップ３内周面１
には細孔状の塗料供給路５の内端が開口しており、この
塗料供給路５先方が回転カップ軸に対して広がる方向に
傾斜して形成され、外端の開口部１２は前記前方端面４
ａと回転カップ３の先端との部分に設けられており、こ
の塗料供給路５は回転カップ３の円周方向に等間隔に形
成されている。In addition, the inner circumferential surface 1 of the rotary cup 3 is in contact with the protrusion 4 on the rear side.
The inner end of a pore-shaped paint supply path 5 is open, and the front end of the paint supply path 5 is formed to be inclined in a direction that widens with respect to the rotary cup axis, and the opening 12 at the outer end is open at the front end of the paint supply path 5. End face 4
a and the tip of the rotary cup 3, and the paint supply passages 5 are formed at equal intervals in the circumferential direction of the rotary cup 3.
２６は回転カップ３の外周に被着された筒体で、回転カ
ップ３の後部外周面に設けた太径部２７に筒体２６の後
部内周面を嵌着し、筒体２６の先端が回転カップ３の先
端よりやや後方に位置し、回転カップ３外周と筒体２６
先端内周との間にジェットノズル２５用の間隙が形成さ
れる。Reference numeral 26 denotes a cylindrical body attached to the outer periphery of the rotary cup 3, and the rear inner peripheral surface of the cylindrical body 26 is fitted into a large diameter portion 27 provided on the rear outer peripheral surface of the rotary cup 3, so that the tip of the cylindrical body 26 Located slightly behind the tip of the rotating cup 3, the outer periphery of the rotating cup 3 and the cylindrical body 26
A gap for the jet nozzle 25 is formed between the tip and the inner periphery.
回転軸９はパイプ孔２８を有して中空パイプ状に形成さ
れ、軸受部２３にてこのパイプ孔２８に高圧エアが送入
される。The rotating shaft 9 is formed into a hollow pipe shape with a pipe hole 28 , and high-pressure air is introduced into the pipe hole 28 at the bearing portion 23 .
一方回転軸９のパイプ孔２８先端部周面においては、基
体７に放射状に貫通孔２９が穿設され、この貫通孔・２
９の他端は回転カップ３の外周面に開口している。On the other hand, on the peripheral surface of the tip end of the pipe hole 28 of the rotating shaft 9, through holes 29 are bored radially in the base body 7.
The other end of 9 is open to the outer peripheral surface of rotary cup 3.
しかして回転カップ３の太径部２７に筒体２６の後部内
周面を密接的に嵌着した状態において、回転カップ３外
周面と大径部２７前面と筒体２６内周面とにより形成さ
れた空気室３０に上記貫通孔２９を介して高圧エアが送
入されるものであり、この高圧エアはジェットノズル２
５より噴出され、塗料供給路５より供給された液体塗料
２をジェット気流の作用により霧化しかつ該霧化粒子に
被塗装物体６方向の初速度を加えるとともに、被塗装物
体６方向に向う環筒状のジェット気流を形成して塗料粒
子の末流の外周を該環筒状のジェット気流にて覆い、霧
化塗料の飛散を防止して均一な塗装パターンを得ること
ができるようにしである。Therefore, in a state where the rear inner circumferential surface of the cylinder body 26 is closely fitted to the large diameter part 27 of the rotating cup 3, the structure is formed by the outer circumferential surface of the rotating cup 3, the front surface of the large diameter part 27, and the inner circumferential surface of the cylinder body 26. High pressure air is fed into the air chamber 30 through the through hole 29, and this high pressure air is supplied to the jet nozzle 2.
The liquid paint 2 ejected from the paint supply path 5 is atomized by the action of the jet stream, and an initial velocity is applied to the atomized particles in the direction of the object to be painted 6, and a ring is generated in the direction of the object to be painted 6. A cylindrical jet stream is formed to cover the outer periphery of the trailing stream of paint particles, thereby preventing the atomized paint from scattering and making it possible to obtain a uniform coating pattern.
図中１３は塗料供給パイプで、その先端１４から回転カ
ップ３後部の内周面１に液体塗料２が連続的に流下供給
されるようにしてあり、この塗料供給パイプ１３は絶縁
アーム１５の先端に支持体１６にて支持され、一端を塗
料供給源１Ｔに連結された塗料チューブ１８の他端を上
記塗料供給パイプ１３の後端に連結しである。In the figure, reference numeral 13 denotes a paint supply pipe, and the liquid paint 2 is continuously supplied downward from its tip 14 to the inner circumferential surface 1 at the rear of the rotary cup 3. A paint tube 18 is supported by a support body 16, one end of which is connected to a paint supply source 1T, and the other end of which is connected to the rear end of the paint supply pipe 13.
１９はエア供給源で、エアチューブ２０２０ａを介して
エアモータ１０及び軸受部２３に高圧エアを供給し、エ
アモータ１０を回転駆動するとともに、軸受部２３から
回転軸９のパイプ孔２８、基体７の貫通孔２９を介して
空気室３０に高圧エアが送入され、ジェットノズル２５
かう被塗装物体６方向に向う環筒状のジェット気流とし
て噴出される。Reference numeral 19 denotes an air supply source which supplies high pressure air to the air motor 10 and the bearing section 23 through the air tube 2020a, rotates the air motor 10, and also connects the air motor 10 from the bearing section 23 to the pipe hole 28 of the rotating shaft 9 through the base body 7. High pressure air is fed into the air chamber 30 through the hole 29, and the jet nozzle 25
It is ejected as an annular jet stream toward the object 6 to be coated.
２１は高圧発生源で、電線２２を介して軸受部２３に設
けた端子３１に連結され、回転軸９、基体７を介して回
転カップ３に高電圧を印加するようにしである。A high voltage generation source 21 is connected to a terminal 31 provided on the bearing portion 23 via an electric wire 22, and is configured to apply a high voltage to the rotating cup 3 via the rotating shaft 9 and the base body 7.
また被塗装物体６は接地電位に保たれる。Further, the object to be painted 6 is kept at ground potential.
２４は突出部４の突周面に螺着した蓋体で、この蓋体２
４は液体塗料２が突出部４の突筒面側に回り込むのを防
止するためのものである。24 is a lid screwed onto the peripheral surface of the protrusion 4;
4 is for preventing the liquid paint 2 from going around to the projecting cylinder surface side of the projecting part 4.
かくて上記実施例において、塗料供給パイプ１３先端１
４から回転カップ３の後部の内周面１に流下された液体
塗料２は回転カップ３０回転に伴って円周方向に均一化
され、同時に高速回転状態にある回転カップ３の遠心力
により該液体塗料２は回転カップ３の後部内周面１に施
されたテーパに沿って前方に移動し、さらにトンネル部
８を通過して回転カップ３前部の内周面１に至った液体
塗料２は該内周面１にフィルム状に拡がり、ついに突出
部４の後面部に至る。Thus, in the above embodiment, the tip 1 of the paint supply pipe 13
The liquid paint 2 that has flowed down onto the inner peripheral surface 1 at the rear of the rotary cup 3 from the rotary cup 3 is uniformized in the circumferential direction as the rotary cup 30 rotates, and at the same time, the liquid is The liquid paint 2 moves forward along the taper formed on the rear inner circumferential surface 1 of the rotary cup 3, and further passes through the tunnel portion 8 and reaches the inner circumferential surface 1 of the front portion of the rotary cup 3. It spreads like a film on the inner peripheral surface 1 and finally reaches the rear surface of the protrusion 4.
このため突出部４の後面部に至った液体塗料２は相隣接
せる塗料供給路５，５の開口部間の壁面に当って周方向
に広かって、均一に漸次塗料供給路５内に穿設された該
塗料供給路５の傾斜に沿って液体塗料２は開口部１２方
向に移動し、この開口部１２に比較的少量づつの液体塗
料２が連続的に供給されることになる。Therefore, the liquid paint 2 that has reached the rear surface of the protrusion 4 hits the wall surface between the openings of the adjacent paint supply passages 5, 5, spreads in the circumferential direction, and is uniformly and gradually drilled into the paint supply passage 5. The liquid paint 2 moves toward the opening 12 along the slope of the paint supply path 5, and the liquid paint 2 is continuously supplied to the opening 12 in relatively small amounts.
開口部１２から出た液体塗料２は傾斜面を形成する突出
部４の前方端面４ａに遠心力によって広カリ、より一層
薄膜化される。The liquid paint 2 coming out of the opening 12 is spread over the front end surface 4a of the protrusion 4 forming an inclined surface by centrifugal force, and is made into a thinner film.
しかしてこの薄膜化された液体塗料２はジェットノズル
２５に噴流するジェット気流の作用により機械的に噴化
され被塗装物体６方向の初速度が与えられる。The liquid paint 2 thus formed into a thin film is mechanically atomized by the action of the jet stream flowing into the jet nozzle 25 and is given an initial velocity in the direction of the object 6 to be coated.
この後高電圧状態の回転カップ３内を通過する過程で液
体塗料２は荷電されていることにより、霧化された液体
塗料２の各霧化粒子は荷電状態にあり、このため霧化塗
料は静電界の作用により加速されながら被塗装物体６方
向に飛翔し、静電作用により被塗装物体６に被着し、塗
膜を形成するのである。Since the liquid paint 2 is charged while passing through the rotary cup 3 which is in a high voltage state, each atomized particle of the atomized liquid paint 2 is in a charged state. It flies in the direction of the object to be painted 6 while being accelerated by the action of the electrostatic field, and is adhered to the object to be painted 6 by the electrostatic action, forming a coating film.
本発明は内周面にフィルム状の液体塗料が供給される回
転カップの先部内周面の全周に亘って環状の突出部を突
設しであるから、液体塗料が突出部の後端面に衝突して
周方向に均一に広がることができるものであって、上述
のように回転カップ内周面と連続しかつ回転カップの中
心軸に対して平行乃至は前方に広がる方向に穿設された
塗料供給路の開口部に回転カップ先端へ至る傾斜面を形
成しであるので、塗料供給路の開口部から吐出された液
体塗料は遠心力によって傾斜面に沿って広げられ、この
広がりで液体塗料の良好な薄膜化が得られるものであり
、しかも回転カップの先端外周の後部にジェットノズル
を設けて被塗装物体方向への霧化塗料の末流を包み込む
ような環筒状のジェット気流を形成しであるので、塗料
供給路から供給される液体塗料をジェットノズルに噴流
するジェット気流の作用により良好に微細に霧化するこ
とができるものであって、水性塗料のように従来静電的
な霧化が困難であり静電塗装に不向きであるとされてき
た液体塗料についても良好に霧化することができる効果
を有し、更に回転カップと被塗装物体との間に高電圧を
印加するものであるから、液体塗料が回転カップを通過
する過程で十分帯電されることになり、ジェットノズル
部分で霧化された液体塗料粒子も荷電状態にあるため、
該荷電粒子は静電的に加速されながら飛翔し、被塗装物
体に静電作用により被着することになって従来の静電塗
装装置と変らない良好な塗装効率が得られる利点を有す
るものであり、またジェットノズルより噴出された環筒
状のジェット気流により被塗装物体方向に向う霧化塗料
の末流が包み込まれることになるため、不必要な方向へ
の霧化塗料の飛散を生じることがなく均一な塗装パター
ンを得ることができるとともに、上記霧化塗料の末流が
環筒状のジェット気流により強化されることになるため
、回転カップを被塗装物体に対し平行移動したりあるい
は首振りしたりしながら塗装作業を行うことができ、一
台の装置で広範囲の塗装を行うことができる効果を有す
るものである。In the present invention, an annular protrusion is protruded over the entire circumference of the inner circumferential surface of the tip of the rotary cup to which the liquid paint in the form of a film is supplied to the inner circumferential surface. It can collide and spread uniformly in the circumferential direction, and as mentioned above, it is continuous with the inner peripheral surface of the rotating cup and is perforated in a direction parallel to the central axis of the rotating cup or in a direction that spreads forward. Since the opening of the paint supply path has an inclined surface leading to the tip of the rotary cup, the liquid paint discharged from the opening of the paint supply path is spread along the slope by centrifugal force, and this spreading spreads the liquid paint. In addition, a jet nozzle is provided at the rear of the outer periphery of the tip of the rotary cup to form an annular jet stream that envelops the trailing stream of atomized paint toward the object to be coated. Therefore, the liquid paint supplied from the paint supply channel can be finely atomized by the action of the jet stream that is jetted into the jet nozzle, and unlike water-based paints, conventional electrostatic atomization is possible. It has the effect of being able to effectively atomize liquid paint, which has been considered difficult to atomize and unsuitable for electrostatic painting, and also applies a high voltage between the rotary cup and the object to be coated. Therefore, the liquid paint becomes sufficiently charged as it passes through the rotating cup, and the liquid paint particles atomized at the jet nozzle are also in a charged state.
The charged particles fly while being electrostatically accelerated and adhere to the object to be coated by electrostatic action, which has the advantage of providing good coating efficiency comparable to that of conventional electrostatic coating equipment. In addition, the annular jet stream ejected from the jet nozzle envelops the tail stream of atomized paint heading toward the object to be coated, which prevents the atomized paint from scattering in unnecessary directions. It is possible to obtain a uniform coating pattern without any problems, and the tail stream of the atomized paint is strengthened by the annular jet stream. This has the effect of allowing painting to be carried out over a wide range of areas with a single device.
第１図は本発明一実施例の拡大断面図、第２図は同上の
正面図、第３図ａは同上の側面図、第３図すは同上の蓋
体を取外した状態の側面図、第４図は同上の使用状態の
概略図、第５図は同上の供給路拡大断面図であり、１は
内周面、２は液体塗料、３は回転カップ、４は突出部、
４ａは前方端面、５は塗料供給路、６は被塗装物体、２
５はジェットノズルである。FIG. 1 is an enlarged sectional view of one embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 a is a side view of the same, and FIG. 3 is a side view of the same with the lid removed. FIG. 4 is a schematic view of the same as above in use, and FIG. 5 is an enlarged sectional view of the supply path of the same as above, in which 1 is an inner circumferential surface, 2 is a liquid paint, 3 is a rotary cup, 4 is a protrusion,
4a is the front end face, 5 is the paint supply path, 6 is the object to be painted, 2
5 is a jet nozzle.
Claims (1)
ップの先部内周面の全周に亘って環状の突出部を突設し
、この突出部後方の回転カップ内周面と連続しかつ回転
カップの中心軸に対して平行乃至前方に広がる方向に突
出部を貫通させて塗料供給路を形成すると共に、突出部
の前方端面を回転カップの中心軸に対して前方に広がり
かつ回転カップの先端へ至る傾斜面にて形成し、回転カ
ップの先端外周の後部にジェットノズルを設けて被塗装
物体方向への霧化塗料の末流を包み込むような環筒状の
ジェット気流を形成し、上記回転カップと被塗装物体と
の間に高電圧を印加するようにして成ることを特徴とす
る静電塗装装置。1. An annular protrusion protrudes over the entire circumference of the inner circumferential surface of the tip of the rotary cup to which a film-like liquid paint is supplied to the inner circumferential surface, and is continuous with the inner circumferential surface of the rotary cup behind this protrusion. A paint supply path is formed by penetrating the protrusion in a direction parallel to or extending forward with respect to the central axis of the rotary cup, and the front end surface of the protrusion extends forward with respect to the central axis of the rotary cup and extends in the direction of the rotary cup. A jet nozzle is provided at the rear of the outer periphery of the tip of the rotary cup to form an annular cylindrical jet stream that envelops the tail stream of the atomized paint toward the object to be painted. An electrostatic coating device characterized by applying a high voltage between a cup and an object to be coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1255276A JPS5820661B2 (en) | 1976-02-07 | 1976-02-07 | electrostatic painting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1255276A JPS5820661B2 (en) | 1976-02-07 | 1976-02-07 | electrostatic painting equipment |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18256382A Division JPS5888060A (en) | 1982-10-18 | 1982-10-18 | Electrostatic coater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5295756A JPS5295756A (en) | 1977-08-11 |
| JPS5820661B2 true JPS5820661B2 (en) | 1983-04-25 |
Family
ID=11808487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1255276A Expired JPS5820661B2 (en) | 1976-02-07 | 1976-02-07 | electrostatic painting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5820661B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53143867U (en) * | 1977-04-19 | 1978-11-13 | ||
| JPS5942936Y2 (en) * | 1982-03-29 | 1984-12-18 | 久義 梶谷 | Sitting cushion with seat for sitting straight |
| JPH1015440A (en) * | 1996-07-08 | 1998-01-20 | Ransburg Ind Kk | Electrostatic coater |
-
1976
- 1976-02-07 JP JP1255276A patent/JPS5820661B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5295756A (en) | 1977-08-11 |
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