JPS6094166A - Electrostatic coating device using rotary atomization - Google Patents
Electrostatic coating device using rotary atomizationInfo
- Publication number
- JPS6094166A JPS6094166A JP58200048A JP20004883A JPS6094166A JP S6094166 A JPS6094166 A JP S6094166A JP 58200048 A JP58200048 A JP 58200048A JP 20004883 A JP20004883 A JP 20004883A JP S6094166 A JPS6094166 A JP S6094166A
- Authority
- JP
- Japan
- Prior art keywords
- air
- compressed air
- compressed
- rotary shaft
- radial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は回転衾化静′亀塗装装置に関する。[Detailed description of the invention] Industrial applications The present invention relates to a rotating static coating device.
従来技術
口転霧化静屯塗装装置の−・ウジング内においてラジア
ル空気軸受により支承された回転軸全具備し、回転軸の
外端部にカップ状噴債屓を固足し、回転軸の内端部にタ
ービン４車？固屋すると共にタービン翼車に圧縮空気を
供和するための圧縮空気１負出ノズルを−・ウノング内
に設け、ラジアル空気軸受および圧縮空気噴出ノズルを
上縮壁紙源に連結し、ラジアル壁紙ｌ１ＩＩ受に圧動空
気を供給することによって回転軸を非接触状態で保持す
ると共に圧縮望気骸出ノズルに圧ＩｋＩ！Ｉ窒気を供壁
紙ること゛によって回転軸を尚速度で回転せしめるよう
にした回転縛化静剋堕装装置が公知でめる。このラジア
ル壁紙１ｉｌｌ受は回転軸を非嵌触状態で支承するのに
必賛な圧縮空気量を低減するために回転軸外周面との間
隙が２０μｍから７０μｍ程度の小さな間隙に形成され
てお９、更に回転軸がラジアル空気軸受に食いイ」〈の
を阻止するために回転軸の外周面はセラミック溶射等に
よる表面硬化処理が施こされている。このようにこのラ
ジアル輩気輔受では軸受面と回転軸外１Ｍ面との間隙が
小さなためにラジアル空気１ｌｌＩ受に十分な圧縮空気
が供ｉＭされていない状態で回転軸が回転せしめ収れる
と回転軸を浮かせる力が弱いために回転軸はその外周面
が軸受面と接触しつつ回転することになる。その結果、
回転Ｑｉ＋の回転数が低いときは回転軸外周面が食い付
くことはないが軸受面との＃棒刀が大きくなって回転数
が低下し、一方回転１ｊ’ｌｉｌの回転数か商い場合に
は回転軸外同面に表面硬化処理が施こざｔしているにも
ηへかわらずに回転軸外ＩＭｌがＩ？ＩＩＩＩ受面に食
い付き、回転不能になってし甘うという問題を生ずる。A conventional atomizing static painting device is equipped with a rotating shaft supported by a radial air bearing in the housing, a cup-shaped jet is fixed to the outer end of the rotating shaft, and a cup-shaped jet is fixed to the outer end of the rotating shaft. 4 turbines in the department? At the same time, a compressed air nozzle for supplying compressed air to the turbine wheel is installed in the unong, and the radial air bearing and the compressed air jet nozzle are connected to the upper compressed wallpaper source, and the radial wallpaper l1II is installed. By supplying pressurized air to the receiver, the rotating shaft is held in a non-contact state, and pressure IkI is supplied to the compressed air nozzle! A rotary restraint and static decomposition device is known in which a rotary shaft is rotated at a still speed by supplying nitrogen gas. This radial wallpaper 1ill support is formed with a small gap of about 20 μm to 70 μm from the outer peripheral surface of the rotating shaft in order to reduce the amount of compressed air required to support the rotating shaft in a non-fitting state. Furthermore, in order to prevent the rotating shaft from digging into the radial air bearing, the outer peripheral surface of the rotating shaft is surface hardened by ceramic spraying or the like. In this way, in this radial air support, the gap between the bearing surface and the 1M surface outside the rotating shaft is small, so if the rotating shaft is rotated and accommodated without sufficient compressed air being supplied to the radial air support, Since the force that lifts the rotating shaft is weak, the rotating shaft rotates while its outer peripheral surface is in contact with the bearing surface. the result,
When the rotation speed of rotation Qi+ is low, the outer circumferential surface of the rotating shaft does not bite, but the #clutch between it and the bearing surface becomes large and the rotation speed decreases.On the other hand, when the rotation speed of rotation 1j'lil is low, Even though the surface hardening treatment is performed on the same surface outside the rotation axis, IM1 outside the rotation axis does not change to η. This causes the problem that it bites into the receiving surface and becomes unable to rotate.
発明の目的
本発明は回転軸を常時正規の回転数で回転畑せることが
でき、それによって常時良好な塗装作用を行なうことが
できるようにした回転霧化静電塗装装置を提供すること
にある。OBJECTS OF THE INVENTION The object of the present invention is to provide a rotary atomizing electrostatic coating device that allows a rotating shaft to rotate at a regular rotational speed at all times, thereby ensuring a good coating effect at all times. .
発明の構成
本発明の構成は、回転磁化静電＊裟鉄良の−・ウジング
内においてラジアル空気軸受により支承された回転軸を
具備し、回転軸の外ｙ一部にカツグ状１貝磁屓全回足し
、回転軸にタービン４車を取付けると共にタービン翼車
に圧縮空気を供んするための圧縮空気１貝出ノズルを−
・ウジング内に設け、ラジアル空気！Ｉｌｌ受および圧
励壁紙嘱出ノズルを圧縮生気課に連結した回転霧化静電
塗装装置において、ラジアル空気軸受と用軸空気源とを
連結する圧縮空気供給環′市内Ｖこ圧縮空気流量を検出
するための検出器を数例けると共にＩｔｈ系Ｉｌ！ｌ望
気空気出ノズルと圧に７免気源と會連結する圧縮壁紙供
給導１′同に検出器に尾１動するｆｉＴｌｌ向弁を設け
、ラジアル空気軸受に惧／６６される圧縮空気流蓋が予
め足められた五瞭を趙えたと＠ｖｃ餉１１Ｉ４１弁を開
弁して用軸壁紙噴出ノズルに圧縮空気流量ｉ【δするよ
うにしたことにある。Structure of the Invention The structure of the present invention includes a rotating shaft supported by a radial air bearing in a rotating magnetized electrostatic housing, and a one-shell magnetic shell in the shape of a cut-out on a part of the outer side of the rotating shaft. In addition to installing four turbine wheels on the rotating shaft, one compressed air nozzle was installed to supply compressed air to the turbine wheel.
・Radial air installed inside the housing! In a rotary atomizing electrostatic coating device in which an Ill receiver and a pressure-excited wallpaper extrusion nozzle are connected to a compressed air section, a compressed air supply ring connecting a radial air bearing and an axial air source is used to control the compressed air flow rate within the city. In addition to some examples of detectors for detection, Ith system Il! A compressed wallpaper supply conduit is connected to a desired air outlet nozzle and a pressure relief source, and a fiTll direction valve is also provided to the detector, and the compressed air flow is controlled by the radial air bearing. When the lid was opened in advance, the valve 11I41 was opened to allow the compressed air flow rate i[δ to be applied to the wallpaper spouting nozzle.
実！通例
旗１図を参照す乙と、その全体を符号１で示す回転霧化
静電塗装装置はほぼ中壁円筒状の全開製前部ハウジング
２とほぼ中壁円筒状の金属＃後部ハウジング３とを具備
し、これらの両ハウジング２．３はボルト４によって強
固に結合される。後部ハウジング３の円筒孔５内には電
気絶縁拐科からなる支持ロッド６が嵌着され、後部ハウ
ジング３はピル）７によって支持ロッド６に固締きれる
。fruit! Referring to Figure 1, the rotary atomizing electrostatic coating device, the entirety of which is indicated by reference numeral 1, consists of a fully open front housing 2 with a substantially cylindrical inner wall and a metal rear housing 3 with a substantially cylindrical inner wall. Both housings 2.3 are firmly connected by bolts 4. A support rod 6 made of electrically insulating material is fitted into the cylindrical hole 5 of the rear housing 3, and the rear housing 3 is fixed to the support rod 6 by a pill 7.
この支持ロッド６は、図示しない基台によって支持され
ている。一方、前部ハウジング２円Ｈ′Ｃは回転軸１８
が挿入される。この回転軸８はその中央部Ｖこ位置する
中窒円尚部８ａと、中空円筒部８ａの前端部に一体形成
さ７′１．た１！１１部分８ｂと、中空円筒部８ａの後
端部に１庸されたｍ１１部分８ｃとにより構成され、こ
の回転軸８のｌ１ＩＩｔ′Ａ分８ｂには金属製男楊′ａ
４９がナツト１０により固締される。この１貧祷頭９は
壌状璧間１１會その内部に形成した県霧頭支持体１２と
、この支持体１２上にｌＩ￥ＩＩ屋きれたカップ状の噴
紡頭本体１３とにより構成される。第１図並びに第２図
に示されるように支持体１２の外筒部１４上には環状空
間１１内に開口しかつ噴霧頭本体１３の内壁面１５に滑
らかに接続する多数の塗料流出孔１６が形成される。一
方、前部ハウジング２の前端部には端板１７が１足され
、この端板１７上に塗料噴射ノズル１８が数例けられる
＠この塗料唄刷ノズル１８は塗料供給ボンダ１９を介し
て釜石タンク２０に連結され、また塗料噴射ノズル１８
のノズル口２１は支持体外筒１４の円筒状内周壁面に指
向される。This support rod 6 is supported by a base (not shown). On the other hand, the front housing 2 yen H'C is the rotating shaft 18
is inserted. This rotating shaft 8 is integrally formed with a hollow cylindrical portion 8a located in the center thereof and a front end portion of the hollow cylindrical portion 8a. It is composed of a 1!11 portion 8b and a m11 portion 8c which is attached to the rear end of the hollow cylindrical portion 8a.
49 is tightened with a nut 10. This 1 poor prayer head 9 is composed of a support 12 for the head 12 formed inside the 11-hole space, and a cup-shaped jet head main body 13 disposed on the support 12. Ru. As shown in FIGS. 1 and 2, a large number of paint outlet holes 16 are provided on the outer cylindrical portion 14 of the support 12 and open into the annular space 11 and smoothly connected to the inner wall surface 15 of the spray head body 13. is formed. On the other hand, an end plate 17 is added to the front end of the front housing 2, and several paint spray nozzles 18 are provided on this end plate 17. It is connected to the tank 20 and also includes a paint injection nozzle 18.
The nozzle opening 21 is directed toward the cylindrical inner circumferential wall surface of the support outer cylinder 14.
第１図に示されるように前部ハウジング２内には一対の
ラジアル空気軸受３０．３１が配置され、回転＃ｔＵ
Ｓはこれらう・ソアル免気輔ｊ受３０．３１によって非
接触状態で回転可能に支承される。各ラジアル窒気ｌ１
１１ｉＩ受３０．３１はその内部に夫々環状も・元気尋
人室３２．３３？、−形成しており、各ラジアル免気！
ｌ’ｉｊｌ受３０．３１の内同■Ｊ上には編状窒気導入
￥３２．３３に連結した多数の窒気噴出孔３４゜３５が
形成される。環状空気導入楢３２のを気碑入孔３６およ
び環状空気導入室３３の窒気導入孔３７は空気供紹ボン
グからなる圧縮窒気ｍ、３８に連結される。As shown in FIG. 1, a pair of radial air bearings 30, 31 are disposed within the front housing 2, and the rotation #tU
S is rotatably supported in a non-contact manner by these mounts 30 and 31. Each radial nitrogen l1
11iI Uke 30.31 also has a ring inside it, Genki Hijin's room 32.33? , - each radial immunity is formed!
A large number of nitrogen gas blowing holes 34° and 35 connected to the knitted nitrogen gas inlet 32.33 are formed on the upper part of the l'ijl receiver 30.31. The air inlet hole 36 of the annular air introduction tower 32 and the nitrogen introduction hole 37 of the annular air introduction chamber 33 are connected to a compressed nitrogen gas m, 38 consisting of an air supply bong.
一方、第１図に示されるように回転軸８の軸部分８ｃに
は一対のディスク状ランナ３９．４０が挿入さｎｌこノ
しらランナ３９．４１ｊスペーサ４１並ひにタービン翼
車４２全介してナツト４３によ＃）＃１部分８Ｃに固締
される。一方、これら両ランナ３９．４０の間には環状
板４４が配置され、ランナ３９，４０と環状板４４は非
接肛型のスラスト空気軸受全構成する。なお、各ランナ
３９゜４０は環状板４４とわずかな間隙金陥だでるよう
に配置される。譲状板４４ＩＪ、一対の０リング４５゜
４６を介して笛封的に前部−・ウノング２に園矩される
。第１図並びに第３図に示すように前部−・ウノング２
内ｖＣは環状板４４の外周面に沿って環状＃４７が形成
され、この環状（ｉ４７は前部−・ウジンダ２内に形成
された圧縮窒気専大孔４８ケ介しｔ識（供給ボンダ３８
に連結される。一方、環状板４４内に：は環状溝４７か
ら半径方向内力に回かって延びる多２ｄの空気；１ｌｌ
ｌ路５０が形成され、こ、／’Ｌ。On the other hand, as shown in FIG. 1, a pair of disc-shaped runners 39, 40 are inserted into the shaft portion 8c of the rotating shaft 8, and the spacer 41 and the turbine impeller 42 are inserted through the spacer 41 and the turbine wheel 42. It is secured to the #1 portion 8C by a nut 43. On the other hand, an annular plate 44 is disposed between the runners 39 and 40, and the runners 39 and 40 and the annular plate 44 constitute a non-opening type thrust air bearing. The runners 39 and 40 are arranged so as to protrude from the annular plate 44 with a slight gap. The concession plate 44IJ is fixed to the front part 2 via a pair of O-rings 45°46. As shown in Fig. 1 and Fig. 3, the front part - Unong 2
The inner VC has an annular #47 formed along the outer peripheral surface of the annular plate 44.
connected to. On the other hand, inside the annular plate 44: 2d of air extending from the annular groove 47 by an internal force in the radial direction;
l path 50 is formed, /'L.
らの谷粱′Ａ辿路５０の内端部近傍からは夫々ランナ３
９並ひにランナ４０に向けて延びる空気流出孔５１．５
２が形成される。From the vicinity of the inner end of the valley A trace path 50, the runners 3
Air outlet holes 51.5 extending toward the runner 40 in parallel with 9
2 is formed.
一方、前部−・ウジフグ２内には環状板４４に瞬接シテ
タービンノズルホルダ５３が固定され、このタービンノ
ズルホルダ５３と前部−・ウジフグ２間には環状の空気
導入室５４が形成される。この空気導入全５４は圧ｗｉ
窒気気導入孔５を介して空気供給ボンｆ３８に連結され
る・仝気４ｊ入室５４は多数の力゛イドベーン（図示せ
ず）を具えた圧縮仝気唄出ノズル５７を廟し、この１＠
出ノズル５７に対面してタービン翼車４２のタービンブ
レード５８力祐己ｉｒｔされる。一方、タービン翼車４
２が配置さｎ、ているー・ウノング内部室５９は抜部−
・ウノング３Ｔｆ−形成された排気孔６０’ｃ介して大
気に連結きれる。窒気供給ボング３８から窒気尋入至５
４内に導入された圧縮望東（は噴出ノズル５７を介して
・・ウノング内部室５９内Ｖこ・・賞出する。このとき
噴出圧縮空気がタービンｌ（車４２に回転力を与え、斯
くして回転軸８は尚速度で回転せしめら′ｔ′Ｌること
になる。次いでこの噴出圧縮空気は排気孔６０を介して
大気にＪフト出される。On the other hand, a momentary contact turbine nozzle holder 53 is fixed to the annular plate 44 inside the front Uji puffer 2, and an annular air introduction chamber 54 is formed between the turbine nozzle holder 53 and the front Uji puffer 2. Ru. This air introduction 54 has a pressure wi
The air inlet chamber 54, which is connected to the air supply cylinder f38 through the nitrogen gas introduction hole 5, has a compressed air outlet nozzle 57 equipped with a large number of force side vanes (not shown). @
The turbine blade 58 of the turbine wheel 42 is rotated facing the outlet nozzle 57 . On the other hand, the turbine blade wheel 4
2 is placed, and the inner chamber 59 is removed.
- Unong 3Tf - Can be connected to the atmosphere through the formed exhaust hole 60'c. From nitrogen supply bong 38 to nitrogen intake 5
The compressed air introduced into the inner chamber 59 is ejected through the jet nozzle 57 into the inner chamber 59. At this time, the jetted compressed air gives rotational force to the turbine 1 (wheel 42, and As a result, the rotating shaft 8 is still rotated at the same speed.Then, this jetted compressed air is discharged to the atmosphere through the exhaust hole 60.
一方、ハウシング内部室５９を画定する後部ハウジング
３の端部壁６１には貫通孔６２が形成され、この貫通孔
６２内を置皿するｍ倹ホルダ６３が端部壁６１に固ｉ１
？ｉｉされる。この電極ホルダ６３の内部には回転Ｉ！
ｌ＋ ｓの回転軸線と共’１ｔｉｉｌ的に形成された円
筒孔６５が形成さｉ′Ｌ、この円筒孔６５内には回転釦
１８の材料よりも柔らかい倒斜、例えは砲金のような金
ｋｊＳ材料からなる電極６６が摺！ＩＩＩＩ町＋１ｔｇ
に挿入される。この電極６６は小匝のビン部６６ａと拡
大頭部６６ｂからなｐｌこ〕Ｌらピン部６６ａと拡大頭
部６６ｂは一体形成される。ビンｔＪ６６ａの先端部は
尖頭状に形成され、回転軸８のφ１１１線上において回
転’ｉ＃１１部分８Ｃの端■上に接１独する。屯輛ホル
タ″６３の円筒孔６５の後ｙ１Ｍ部には調節ねじ６７が
螺着され、電極６６の拡大頭ｔｆｌｉ６６）ｉと調節ね
じ６７間間こは用材１１はね６８が押入される。屯４拳
６６の先端部ｔまこの圧縮はね６８のはね力によって回
転ｌ１１１１部分８ｃの端面上に押圧せしめらノ１６ろ
５、一方、後部−・ウジング３の外壁面上には端子６９
がＨ（ルト７０ＶＣよって固締され、この端子６９は−
６０ｋＶから一９ＯｋＶの負の高厄圧全発生するための
尚電圧発生装置７１に張絖される。従って前部／・ウノ
ング２並びに後部−・ウノング３には負の、“、・１１
電圧が印加さｆＬ、史に１＠将頭９にも電極６６Δ１に
ひに回ｌｌいｆ浦８金介しＣＳ−＋の、ｉ−ら１ｔε圧
が印加される。On the other hand, a through hole 62 is formed in the end wall 61 of the rear housing 3 that defines the housing internal chamber 59, and an m-sleeve holder 63 that is placed in the through hole 62 is fixed to the end wall 61.
? ii. The inside of this electrode holder 63 has a rotation I!
A cylindrical hole 65 is formed co-linear with the axis of rotation of l+s, and inside this cylindrical hole 65 there is made an oblique material that is softer than the material of the rotary button 18, for example, gold such as gunmetal. The electrode 66 made of material is sliding! III town +1tg
inserted into. This electrode 66 consists of a small bottle portion 66a and an enlarged head portion 66b.The pin portion 66a and the enlarged head portion 66b are integrally formed. The tip of the bottle tJ66a is formed into a pointed shape, and touches the end (2) of the rotation 'i#11 portion 8C on the φ111 line of the rotation shaft 8. An adjusting screw 67 is screwed into the rear y1M portion of the cylindrical hole 65 of the holster 63, and the spring 68 of the material 11 is pushed between the enlarged head tfli66)i of the electrode 66 and the adjusting screw 67. 4 The tip of the fist 66 is pressed onto the end face of the rotating l1111 portion 8c by the spring force of the compression spring 68, while the terminal 69 is placed on the outer wall surface of the rear housing 3.
is fixed by H (root 70VC, and this terminal 69 is -
A voltage generator 71 is connected to generate a negative high voltage of 60 kV to 90 kV. Therefore, the front part /・unong 2 and the rear part −・unong 3 have a negative value of ",・11
When a voltage is applied fL, a voltage of CS-+, i-, and 1tε is applied to the electrode 66Δ1 through the metal.
、Ａ′Ｊ１図にボ延れるよりに仝気Ｂ輸・ａボンダ３８
に連結さｆした上圧ｄ自窒気供ｆｌｉ： ２ＦＪ ’ｍ
” ”は一対の圧糊墾気供給４１自７３．７４に分岐さ
れる。圧扁空Ａ１共最；、（Ｃ５盾７３はラノアル空家
いｑｌ受３０．３１の空気々す人孔３６．３７およびス
ラスト仝冥−１１−１受の空気４）入札４８ Ｋ ）・
、！ 紹され、圧＋１４Ｉｌ宵１気供Ａ、ｉ、；ｍ＋’
ｔｆ ７４ｔユタービンノズルホルダ５３の生気４．１
人孔５５に連ｉ１’ｌされる。上圧ｉ＃１「Ｊ梁気ｆＪ
（ｒｌａｉ ｌ’ｌｆｉ Ｖ ７２内しくげ圧ｊ’：ｌ
’ｊ望気中の水分を蒸）Ｊ６させるための空気加熱装置
ｆｆｆｉ７５と、庄ホｊ１→墾気圧を設疋圧に４ｉＬ持
するレギュレータ ７６が自己（自、さ才りる。 史Ｖ
こ、 青豆気力１熱表１函 ７５上流の王用軸窒気供胎
導パ邑゛７２内ＶＣはスト、ツブ・マルグ７７が配置さ
れ、レギュレータフ６下υ１ｒ、の工圧縮墾気供給へ）
肴７２内にもストツフ゛ノ々ルブ７８が配置される。一
方、圧縮気気供裕導肯７３内には圧幅壁紙供、？＞導管
７３内全苑れる圧縮空気の流量を検出する検出器７９と
ストップパルプ８０が配置銭さｉｌｌ、圧縮空気供給４
管７４内には検出器７９に応動する電磁１１ｊ１．ｌ
１ｍ弁８１とストップパルプ８２が配置される。この電
磁ｆｌｉｌＪ（財）弁８１は圧縮生気供給導管７３内を
流れる圧縮空気流量が予め屋められた流量を越えたこと
が検出器７９によって検出器れたときＶｃＩＡ３めて開
弁する。なお、圧縮壁紙供給尋＋ｉイア３内を流れる用
軸気気流液が増大すノ１．はぐれに伴なって圧節空気供
給導管７３内の圧力が増大するので検出器７９によって
圧前白気気供給ｍ’ｈ７３円の圧力乞恢出し、この圧力
が予め定められた圧力を越えたときに亀（ｉ制御卸弁８
１を開弁するようにしてもよい。, B transport and a bonder 38 are shown in Figure A'J1.
Upper pressure d connected to fli: 2FJ'm
``'' is branched into a pair of compressed air supplies 41 and 73 and 74. (C5 shield 73 is Ranoal empty house ql receiver 30.31 air hole 36.37 and thrust death-11-1 receiver air 4) Bid 48 K)・
,! Introduced, pressure + 14 Il evening 1 atmosphere A, i,;m+'
tf 74t turbine nozzle holder 53 life 4.1
It is connected to the human hole 55. Upper pressure i #1 “J Liang Qi fJ
(rlai l'lfi V 72 internal bending pressure j': l
The air heating device fffi75 to evaporate the moisture in the air and the regulator 76 that maintains 4iL of pressure at the setting pressure are self-sufficient.History V
This, Aomame Kiryoku 1 Heat Table 1 Box 75 Upstream of the royal axis Nitrogen supply conductor 72 VC is located, Tsubu Marg 77 is placed, to the compressed air supply of Regulator 6 lower υ1r. )
A storage valve 78 is also arranged within the dish 72. On the other hand, inside the compressed air supply guide 73, there is a pressure width wall paper. >A detector 79 for detecting the flow rate of compressed air flowing inside the conduit 73 and a stop pulp 80 are arranged, and the compressed air supply 4
Inside the tube 74 are electromagnetic elements 11j1. l
A 1m valve 81 and a stop pulp 82 are arranged. This solenoid valve 81 opens at VcIA3 when the detector 79 detects that the flow rate of compressed air flowing in the compressed air supply conduit 73 exceeds a predetermined flow rate. Note that the amount of axial airflow liquid flowing in the compressed wallpaper supply tank + i ear 3 increases. As the pressure inside the compressed air supply conduit 73 increases as the separation occurs, the pressure within the compressed air supply conduit 73 increases, so the pressure of the compressed white air supply m'h73 yen is determined by the detector 79, and when this pressure exceeds a predetermined pressure. Ni turtle (i control wholesale valve 8
1 may be opened.
前述したように回転軸ｊ８はランナ３９，４０と環状板
４４からなるスラスト生気軸受と、一対のラソアル静圧
空気軸受３０．３１により支承されている。ラジアル空
気軸受３０．３１では空気噴出孔３４．３５から予め走
められた流量以上の圧縮空気が噴出すると軸受３０，３
１の内周面と回転軸中空円筒部８ａの外周面間に全気層
が形成され、回転（Ｎ！Ｉ ８はこの２気胎ＫＪ：って
非接触状態で支承さ〕１．る。一方、スラスト空気軸受
では壁紙席田孔５１．５２から現状）Ｊｉ４４とランナ
３９゜４０間の間隙に予め屋められた流１よ以上の圧縮
空気が噴出すると環状板４４とランナ３９，４０間に５
８気心が形成され、ランチ３９．４０はとの全気層によ
って非接触状態で保持される。このようにラジアル空気
Ｑ’ｌｌｌ受３０．３１およびスラスト空乏（’！！ｉ
ｌｉ受に十分な圧縮空気が供ｆ＆されると回転軸８はこ
れらラジアル生気軸受３０．３１およびスラスト空気軸
受によって非接触状態で保持されることしＣなる。As described above, the rotating shaft j8 is supported by a thrust air bearing consisting of the runners 39 and 40 and an annular plate 44, and a pair of lasoal static air bearings 30 and 31. In the radial air bearing 30.31, when compressed air is ejected from the air ejection hole 34.35 at a flow rate higher than the predetermined flow rate, the bearing 30,3
A complete air layer is formed between the inner circumferential surface of the rotary shaft 1 and the outer circumferential surface of the rotating shaft hollow cylindrical portion 8a, and the rotation (N!I8 is supported in a non-contact state). On the other hand, in the thrust air bearing, when a predetermined flow of compressed air of 1 or more is ejected from the wallpaper seat hole 51.52 into the gap between Ji 44 and the runners 39 and 40, the flow between the annular plate 44 and the runners 39 and 40. to 5
Eight air cores are formed and the launches 39, 40 are held in non-contact by the entire air layer. In this way, the radial air Q'llll intake 30.31 and the thrust depletion ('!!i
When sufficient compressed air is supplied to the bearing, the rotating shaft 8 is held in a non-contact state by these radial air bearings 30, 31 and the thrust air bearing.
塗装作条時にはストップパルプ７７ 、７８ 。Stop pulp 77, 78 when painting.
８０．８２がｌａｌ弁ぜしめられ、それによってラジア
ル生気＋＋ｌｌＩ受３０．３１およびスラスト空気軸受
に圧縮空気が供給さ才りる。このとき回転軸８を非接触
状態で支承するのに十分な和の圧縮空気がラジアル突気
６１＋受３０．３１およびスラスト気気−１１受に供給
されている場合には電磁″ｆｕＩＪ御弁８１が開弁せし
められ、その結果噴出ノズル５７から圧縮空気が噴出す
るために回転ｔｌＩＩ８は１怖速度で回転せしめらｉす
る。一方、回転軸８を非接触状態で支承するのに十分な
量の圧縮空気がラジアル空気！ｂｉｔ受３０．３１およ
びスラスト空気軸受に供給されていないときは電磁制御
弁８１が閉弁せしめられる。80.82 is connected to the lal valve, thereby supplying compressed air to the radial air bearing 30.31 and the thrust air bearing. At this time, if the sum of compressed air sufficient to support the rotating shaft 8 in a non-contact state is supplied to the radial thrust air 61 + receiver 30.31 and the thrust air receiver 11, the electromagnetic "fuIJ control valve 81 is opened, and as a result, compressed air is ejected from the ejection nozzle 57, causing the rotation tlII8 to rotate at a speed of 1. On the other hand, the rotation tlII8 is rotated at a speed of 1. When compressed air is not being supplied to the radial air bit receiver 30, 31 and the thrust air bearing, the electromagnetic control valve 81 is closed.
その結果噴出ノズル５７からの圧縮空気の噴出作用は停
止せしめられ、斯くして回転軸８０回転が停止せしめら
れる。従って回転＠１１８はラジアル窒気軸受３０．３
１およびスラスト空ＬＡ軸受によって非接触状態で支承
されているときのみ回転駆動せしめられることになる。As a result, the jetting action of the compressed air from the jetting nozzle 57 is stopped, and thus the rotation of the rotating shaft 80 is stopped. Therefore rotation @118 is radial nitrogen bearing 30.3
1 and the thrust air bearing LA bearing in a non-contact manner.
塗料噴射ノズル１８のノズル口２１から支持体外筒１４
の内周壁囲上ｅこ１貧射された産科は噴；１ｉ頭９の回
転により生ずる遠心力によって塗料流出札１６全辿って
１圓霧頭本体１３０円周壁面１５上にＯＩＬ出する。仄
いてこの塗料は内周壁面１５上におい′て薄い成膜とな
って広がりなから１！１を霧頭本体１３の先端部１３ａ
Ｋ達する。前述したように１貢楊頭９は負の高電圧が印
加されており、従って噴霧頭９の回転によシ生ずる遠心
力によって噴揚頭本体１３の先端部１３ａから薄い１１
ｍ状に広がった塗料は負の高電圧に帯電された噴霧とな
る。通常、被塗装面は零１区位となっているので塗料噴
霧は電気力によって被塗装面に向けて１曵引され、それ
によって被塗装面の塗装が行なわれることりこなる。From the nozzle port 21 of the paint injection nozzle 18 to the support outer cylinder 14
OIL is sprayed onto the inner circumferential wall of the head body 130 by the centrifugal force generated by the rotation of the head 9, tracing the entirety of the paint outflow label 16 and ejecting oil onto the head body 130 and the circumferential wall surface 15. Since this paint forms a thin film on the inner peripheral wall surface 15 and does not spread, 1!1 is applied to the tip 13a of the mist head body 13.
Reach K. As mentioned above, a negative high voltage is applied to the spray head 9, and therefore the thin 11
The paint spread in an m-shape becomes a spray charged with a negative high voltage. Normally, since the surface to be painted is on the order of zero and one, the paint spray is drawn toward the surface to be painted by an electric force, thereby coating the surface.
発明の効果
回転軸を非接触状態で支承するのに十分な鼠の圧縮空気
がラジアル空気軸受およびスラスト空気輔ｔンに供給さ
れていないときｖｃ（ｌ″ｊ：回転軸の回転を自動的に
停止させるようにすることによって回転軸が価１蛍白周
面に食い付き、それによって回転軸が回転率ｉヒになる
のを鋼上することができる。また、回転ｑ４１１が回転
しているときには常に回転軸は非接触状態で支承されて
いるので回転軸を正規の回転数で回転させることができ
、斯くして安尾したきれいな塗装面を得ることがでさる
０Effects of the Invention When sufficient compressed air is not supplied to the radial air bearing and the thrust air bearing to support the rotating shaft in a non-contact manner, vc(l″j: The rotation of the rotating shaft is automatically controlled. By stopping the rotating shaft, it is possible to prevent the rotating shaft from biting into the valence 1 fluorophore peripheral surface, thereby causing the rotating shaft to have a rotation rate of i.Furthermore, when the rotating shaft is rotating, Since the rotating shaft is always supported in a non-contact state, it is possible to rotate the rotating shaft at the regular rotation speed, and in this way, it is possible to obtain a smooth and clean painted surface.
第１図は本発明による回転ｚｍ化静也塗装装置の側面断
面図、第２図は第１図の１１−１線に沿ってみた断面図
、第３図は第１図の１ｌｉｌｌｌ線に沿ってみた断面図
である。
２．３・・・−・ウジング、８・・・回転軸、９・・・
噴霧頭、１８・・・払料噴射ノズル、３０．３１・・・
ラジアル空気軸受、３９．４０・・・ランナ、４４・・
・環状板、６６・・・電極、７２・・・生圧縮受気供給
専管、７３゜７４・・・圧縮空気供給導管、７７．７８
，８０゜８２・・・ストップバルブ、７９・・・検出器
、８１・・・電磁ｆｉｉｌＪ（財）弁。
特許出願人
トヨタ自動隼株式会社
特許出願代理人
弁理士 背 木 朗
弁理士 四 菓 オｌ 之
弁理士 中 山 恭 介
弁理士 山 口 陥 之
弁理士 西 山 雅 也FIG. 1 is a side sectional view of the rotary zm forming Shizuya coating apparatus according to the present invention, FIG. 2 is a sectional view taken along line 11-1 in FIG. 1, and FIG. 3 is a sectional view taken along line 1lill in FIG. 1. This is a cross-sectional view. 2.3...Using, 8...Rotating shaft, 9...
Spray head, 18...Payment injection nozzle, 30.31...
Radial air bearing, 39.40...Runner, 44...
・Annular plate, 66... Electrode, 72... Raw compressed air intake supply pipe, 73° 74... Compressed air supply conduit, 77.78
, 80° 82...stop valve, 79...detector, 81...electromagnetic fiil J valve. Patent Applicant: Toyota Auto Hayabusa Co., Ltd. Patent Attorney: Akira Segi, Patent Attorney: Yotsuya Ori, Patent Attorney, Kyosuke Nakayama, Patent Attorney, Yoshiyuki Yamaguchi, Patent Attorney: Masaya Nishiyama
Claims (1)
ル空気軸受により支承された回転ｍを具備し、該回転軸
の外端部にカップ状噴揚唄を固定し、該回転軸にタービ
ン翼車を取付けると共に該タービン翼車に圧動空気を供
紹するための圧動空気引出ノズルをハウジング内に設け
、上記ラジアル空気軸受および圧縮窒気噴出ノズルを圧
縮鉋気源に連結した回転霧化静゛亀塗装装置において、
上記ラジアル空気軸受と圧蝙壁紙源とゲ遅結する圧縮空
気供給導管内に圧絹望気流量全検出するための検出器を
取イ」けると共に上記圧縮空気噴出ノズルと圧紬壁紙源
とを連結する圧縮壁紙供給ｍ′Ｗ内に該検出器にＬ膚す
る制御弁を設け、上記ラジアル空気軸受に供給される圧
縮壁紙直重が予め冗められた流電を越えたときに上記制
御弁を開弁して圧縮空気１質出ノズルに圧縮空気を供給
するようにした回転精化静電塗ｆｃ装置。The rotary atomizer is equipped with a rotation m supported by a radial air bearing in the housing of the coating device, a cup-shaped jet is fixed to the outer end of the rotary shaft, and a turbine impeller is mounted on the rotary shaft. A rotary atomizing station is installed in which the radial air bearing and the compressed nitrogen jet nozzle are connected to a compressed plane air source.゛In the turtle coating equipment,
A detector for detecting the total air flow rate is installed in the compressed air supply conduit that connects the radial air bearing and the compressed wallpaper source, and the compressed air jet nozzle and the compressed wallpaper source are connected to each other. A control valve connected to the detector is provided in the connected compressed wallpaper supply m'W, and when the direct weight of the compressed wallpaper supplied to the radial air bearing exceeds a predetermined current, the control valve is activated. A rotary refining electrostatic coating FC device in which compressed air is supplied to a single compressed air nozzle by opening the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58200048A JPS6094166A (en) | 1983-10-27 | 1983-10-27 | Electrostatic coating device using rotary atomization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58200048A JPS6094166A (en) | 1983-10-27 | 1983-10-27 | Electrostatic coating device using rotary atomization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6094166A true JPS6094166A (en) | 1985-05-27 |
Family
ID=16417957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58200048A Pending JPS6094166A (en) | 1983-10-27 | 1983-10-27 | Electrostatic coating device using rotary atomization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6094166A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0286292A2 (en) * | 1987-04-06 | 1988-10-12 | THE DEVILBISS COMPANY (a Delaware Corp.) | Protective system for a device rotatably supported by air bearings |
| JPH10277438A (en) * | 1997-04-03 | 1998-10-20 | Asahi Sunac Corp | Hand held rotary atomizer spray gun |
| EP1502655A2 (en) | 2003-07-29 | 2005-02-02 | Illinois Tool Works Inc. | Powder bell with secondary charging electrode |
| US6889921B2 (en) | 2002-09-30 | 2005-05-10 | Illinois Tool Works Inc. | Bell cup skirt |
| JP2009022930A (en) * | 2007-07-23 | 2009-02-05 | Asahi Sunac Corp | Paint gun |
| US8371517B2 (en) | 2007-06-29 | 2013-02-12 | Illinois Tool Works Inc. | Powder gun deflector |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163461A (en) * | 1982-03-24 | 1983-09-28 | Toyota Motor Corp | Drive control apparatus of rotary atomizing type electrostatic painting apparatus |
-
1983
- 1983-10-27 JP JP58200048A patent/JPS6094166A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163461A (en) * | 1982-03-24 | 1983-09-28 | Toyota Motor Corp | Drive control apparatus of rotary atomizing type electrostatic painting apparatus |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0286292A2 (en) * | 1987-04-06 | 1988-10-12 | THE DEVILBISS COMPANY (a Delaware Corp.) | Protective system for a device rotatably supported by air bearings |
| EP0286292A3 (en) * | 1987-04-06 | 1989-07-12 | THE DEVILBISS COMPANY (a Delaware Corp.) | Protective system for a device rotatably supported by air bearings |
| JPH10277438A (en) * | 1997-04-03 | 1998-10-20 | Asahi Sunac Corp | Hand held rotary atomizer spray gun |
| US6889921B2 (en) | 2002-09-30 | 2005-05-10 | Illinois Tool Works Inc. | Bell cup skirt |
| EP1502655A2 (en) | 2003-07-29 | 2005-02-02 | Illinois Tool Works Inc. | Powder bell with secondary charging electrode |
| US8371517B2 (en) | 2007-06-29 | 2013-02-12 | Illinois Tool Works Inc. | Powder gun deflector |
| US8888018B2 (en) | 2007-06-29 | 2014-11-18 | Illinois Tool Works Inc. | Powder gun deflector |
| JP2009022930A (en) * | 2007-07-23 | 2009-02-05 | Asahi Sunac Corp | Paint gun |
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