JPH0412194B2 - - Google Patents
Info
- Publication number
- JPH0412194B2 JPH0412194B2 JP30624486A JP30624486A JPH0412194B2 JP H0412194 B2 JPH0412194 B2 JP H0412194B2 JP 30624486 A JP30624486 A JP 30624486A JP 30624486 A JP30624486 A JP 30624486A JP H0412194 B2 JPH0412194 B2 JP H0412194B2
- Authority
- JP
- Japan
- Prior art keywords
- lubricant
- cup
- shaped body
- discharge nozzle
- electrostatic
- 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
- 239000000314 lubricant Substances 0.000 claims description 106
- 239000002245 particle Substances 0.000 claims description 19
- 230000005684 electric field Effects 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 41
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本考案は、高電圧が印加され且つ高速回転駆動
されるカツプ状体内に防錆油、潤滑油等の塗油剤
を定量供給して静電霧化させ、これを鋼板、アル
ミニユウム板あるいは銅板等の金属板の表面に静
電力で吸着させて薄油膜を形成させる静電塗油機
に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention is designed to prevent electrostatic discharge by supplying a fixed amount of lubricant such as rust preventive oil or lubricating oil into a cup-shaped body to which a high voltage is applied and which is driven to rotate at high speed. This invention relates to an electrostatic oil applicator that atomizes and adsorbs the atomized oil onto the surface of a metal plate such as a steel plate, aluminum plate, or copper plate using electrostatic force to form a thin oil film.
例えば、罐詰用の缶材として用いられる帯状の
鋼板は、成形最終工程において防錆の目的やプレ
ス加工等の機械加工性向上の目的で防錆油、潤滑
油等の塗油剤を塗布して薄油膜を形成することと
している。
For example, strip-shaped steel sheets used as can stock for canning are coated with lubricants such as rust-preventing oil and lubricating oil in the final forming process to prevent rust and improve machinability during press working. A thin oil film is formed.
ところで、このような鋼板を使用する製缶作業
においては、鋼板の表面に形成された薄油膜の上
から直接印刷を施す印刷工程や、最終的に鋼板の
表面から油膜、ゴミ等を洗浄除去する脱脂工程な
どがあり、印刷インキの載りを良くしたり脱脂工
程を容易にするためには鋼板の表面に形成された
油膜が出来るだけ薄く且つ均一であることが望ま
れる。 By the way, in the can manufacturing work using such steel plates, there is a printing process in which printing is performed directly on the thin oil film formed on the surface of the steel plate, and a final cleaning process to remove the oil film, dirt, etc. from the surface of the steel plate. There is a degreasing process, etc., and in order to improve the adhesion of printing ink and facilitate the degreasing process, it is desired that the oil film formed on the surface of the steel plate be as thin and uniform as possible.
このため、従来より第３図に示すような静電塗
油機T′が使用されている。これは、直流高電圧
発生器１から高電圧ケーブル２を介して通常D.C
（−）80〜（−）120Kv程度の高電圧が印加され
る本体３内にエアモータ４が内蔵されると共に、
当該エアモータ４の回転軸５が本体３の先端から
突出せられ、当該回転軸５の突出端にカツプ状体
６が固設されている。 For this reason, an electrostatic oil applicator T' as shown in FIG. 3 has conventionally been used. This is usually a DC high-voltage generator 1 through a high-voltage cable 2.
An air motor 4 is built in the main body 3 to which a high voltage of about (-)80 to (-)120Kv is applied, and
A rotating shaft 5 of the air motor 4 projects from the tip of the main body 3, and a cup-shaped body 6 is fixed to the projecting end of the rotating shaft 5.
このカツプ状体６には、静電塗油機T′の本体
３に印加された高電圧が回転軸５を介してそのま
ま印加されると共に、本体３に接続される塗油剤
供給ホース７に連結された塗油剤吐出ノズル８か
ら塗油剤が定量供給されるようになされている。 The high voltage applied to the main body 3 of the electrostatic oil applicator T' is directly applied to this cup-shaped body 6 via the rotating shaft 5, and is also connected to the lubricant supply hose 7 connected to the main body 3. The lubricant is supplied in a fixed amount from the lubricant discharge nozzle 8.
しかして、接地状態で連続的に搬送される帯状
鋼板合の金属板Ｋを正極とし、静電塗油機T′の
カツプ状体６を負極として両極間に静電場が形成
され、塗油剤吐出ノズル８からカツプ状体６内に
供給される塗油剤が静電気力と遠心力で霧化さ
れ、負極に帯電した微細な塗油剤粒子となつて反
対極である金属板Ｋの表面に静電力（静電吸引
力）で吸着されて、当該金属板Ｋの表面に非常に
薄い油膜を形成することができる。 As a result, an electrostatic field is formed between the two electrodes, with the metal plate K of the strip steel plate, which is continuously conveyed in a grounded state, as the positive electrode and the cup-shaped body 6 of the electrostatic oil applicator T' as the negative electrode, and the lubricant is discharged. The lubricant supplied from the nozzle 8 into the cup-shaped body 6 is atomized by electrostatic force and centrifugal force, becoming negatively charged fine lubricant particles that are applied to the surface of the metal plate K, which is the opposite pole, by electrostatic force ( It is possible to form a very thin oil film on the surface of the metal plate K by being attracted by the electrostatic attraction force.
しかし、近時においては、金属板Ｋの表面に静
電塗着される塗油剤の量が例えば0.05〜0.1ｇ／
cm2以下という極薄の油膜を形成する極軽塗油の要
請が強く、この場合には塗油剤吐出ノズル８から
カツプ状体６内に供給する塗油剤の供給量を例え
ば約0.5〜１c.c.／min程度と極めて微量に制御す
る必要があるから、最早、塗油剤吐出ノズル８か
らカツプ状体６に対して塗油剤を液滴の状態で供
給することが不可能となつている。
However, in recent years, the amount of lubricant electrostatically applied to the surface of the metal plate K has increased, for example, from 0.05 to 0.1 g/
There is a strong demand for extremely light oil coating that forms an extremely thin oil film of less than cm 2 , and in this case, the amount of lubricant supplied from the lubricant discharge nozzle 8 into the cup-shaped body 6 is, for example, approximately 0.5 to 1 c. Since it is necessary to control the amount to an extremely small amount of approximately c.c./min, it is no longer possible to supply the lubricant in the form of droplets from the lubricant discharge nozzle 8 to the cup-shaped body 6.
即ち、カツプ状体６に対する塗油剤の供給量が
約15c.c.／min以下になると、通常の塗油剤吐出ノ
ズルでは塗油剤を一滴ずつ滴下させて供給しなけ
ればならず、塗油剤の連続供給ができなくなつて
カツプ状体６から塗油剤が断続的に放出される所
謂息つき現象を生じ、塗油ムラを生じてしまう。 That is, when the amount of lubricant supplied to the cup-shaped body 6 is less than about 15 c.c./min, the lubricant must be supplied drop by drop using a normal lubricant discharge nozzle, and the lubricant cannot be continuously supplied. If supply is no longer possible, a so-called breathing phenomenon occurs in which the lubricating agent is intermittently released from the cup-shaped body 6, resulting in uneven lubricating.
まして、塗油剤の供給量が0.5〜１c.c.／min程
度になると、塗油剤吐出ノズルからカツプ状体６
内に塗油剤が滴下する時間的間隔は10数秒程度と
なり、金属板Ｋの表面に均一な油膜を形成するこ
とが不可能となる。 Furthermore, when the supply amount of lubricant reaches about 0.5 to 1 c.c./min, the cup-shaped body 6 is discharged from the lubricant discharge nozzle.
The time interval during which the lubricating agent is dripped into the metal plate K is approximately 10 seconds, making it impossible to form a uniform oil film on the surface of the metal plate K.
このため、本出願人は、塗油剤吐出ノルズ８に
例えば霧化機構を設け、極く少量の塗油剤を少し
ずつ連続的に微粒化してカツプ状体６内に定量供
給する手段を試みた（特開昭59−145063号公報参
照。）
しかしながら、この場合も、塗油剤吐出ノズル
８から霧化して吐出された塗油剤粒子の一部が、
高速回転するカツプ状体６に跳ね返されて当該カ
ツプ状体６の内面に付着されず、塗油剤の定量供
給が困難になつて塗油ムラを生ずると同時に、カ
ツプ状体６外に跳ね飛ばされた塗油剤粒子が静電
塗油機T′の本体３の表面に付着して液滴を形成
し、これが高電圧の影響で粗大な塗油剤粒子とな
つて金属板Ｋ方向に飛び出し、当該金属板Ｋの表
面に吸着されてオイル・スポツトと称する油膜厚
部を生じて塗油不良を起こすことが判明した。 For this reason, the present applicant has attempted a means of providing the lubricating agent discharge nozzle 8 with, for example, an atomizing mechanism to continuously atomize a very small amount of the lubricating agent little by little and supplying it quantitatively into the cup-shaped body 6 ( (Refer to Japanese Patent Application Laid-Open No. 59-145063.) However, in this case as well, some of the lubricant particles atomized and discharged from the lubricant discharge nozzle 8
The lubricant is bounced off by the cup-shaped body 6 rotating at high speed and is not attached to the inner surface of the cup-shaped body 6, making it difficult to supply the lubricant in a constant quantity and causing uneven lubricating. The lubricant particles adhere to the surface of the main body 3 of the electrostatic lubricator T' and form droplets, which become coarse lubricant particles due to the influence of the high voltage and fly out in the direction of the metal plate K. It has been found that the oil is adsorbed on the surface of the plate K, causing a thick oil film called an oil spot, resulting in poor oil application.
そこで本発明は、塗油剤吐出ノズルから吐出さ
れた塗油剤がカツプ状体に跳ね返されることなく
当該カツプ状体内に吸着されて確実に供給される
静電塗油機を提供することを目的とする。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an electrostatic oil applicator in which a lubricant discharged from a lubricant discharge nozzle is adsorbed into a cup-shaped body without being bounced back by the cup-shaped body and is reliably supplied. .
この目的を達成するために、本発明は、高電圧
が印加され且つ高速回転駆動されるカツプ状体内
に塗油剤吐出ノズルから一定量の塗油剤を供給し
て静電霧化する静電塗油機において、塗油剤吐出
ノズルが導電性材料で成形されて静電塗油機の本
体から絶縁離隔して設けられ、当該塗油剤吐出ノ
ズルとカツプ状体との間に一定の電位差を生じさ
せて塗油剤吐出ノズルから吐出された塗油剤の粒
子もしくは液滴をカツプ状体に吸着させる電界が
形成されるように成されていることを特徴とする
ものである。
In order to achieve this object, the present invention provides an electrostatic lubricant that supplies a certain amount of lubricant from a lubricant discharge nozzle into a cup-shaped body to which a high voltage is applied and is driven to rotate at high speed, and electrostatically atomizes the lubricant. In the electrostatic oil applicator, a lubricant discharge nozzle is formed of a conductive material and is provided insulated and separated from the main body of the electrostatic lubricant, and a certain potential difference is created between the lubricant discharge nozzle and the cup-shaped body. It is characterized in that an electric field is formed to cause particles or droplets of the lubricant discharged from the lubricant discharge nozzle to be attracted to the cup-shaped body.
本発明によれば、塗油剤吐出ノズルから吐出さ
れる塗油剤の粒子もしくは液滴が電界のイオン移
動作用によつてカツプ状体内に吸着されるから、
塗油剤吐出ノズルから極く微量の塗油剤を連続的
に微粒化して吐出する場合であつても、その塗油
剤粒子がカツプ状体の遠心力で跳ね返されること
なく当該カツプ状体内に効率的に定量供給され、
塗油ムラの発生が確実に防止される。
According to the present invention, particles or droplets of the lubricant discharged from the lubricant discharge nozzle are adsorbed into the cup-shaped body by the ion movement effect of the electric field.
Even when a very small amount of lubricant is continuously atomized and discharged from the lubricant discharge nozzle, the lubricant particles are not bounced back by the centrifugal force of the cup-shaped body and can be efficiently flowed into the cup-shaped body. Supplied in fixed quantities,
Occurrence of uneven oil application is reliably prevented.
以下、本発明の実施例を図面に基づいて具体的
に説明する。
Embodiments of the present invention will be specifically described below based on the drawings.
第１図は本発明による静電塗油機の一例を示す
側面図、第２図は当該静電塗油機を収容するカバ
ーの背面図である。 FIG. 1 is a side view showing an example of an electrostatic oil applicator according to the present invention, and FIG. 2 is a rear view of a cover that houses the electrostatic oil applicator.
なお、第３図と共通部分については同一符号を
付して詳細説明を省略する。 Note that parts common to those in FIG. 3 are given the same reference numerals and detailed explanations are omitted.
第１図に示す静電塗油機Ｔは、その本体３が塩
化ビニル樹脂、アクリル樹脂あるいはエポキシ樹
脂等の絶縁性材料で成形されたカバー９内に収容
されて、本体３の表面や当該本体３に接続された
高電圧ケーブル２、塗油剤供給ホース７等に塗油
剤が付着しないようになされている。 The electrostatic oil applicator T shown in FIG. The lubricant is prevented from adhering to the high voltage cable 2, lubricant supply hose 7, etc. connected to the lubricant 3.
また、塗油剤吐出ノズル８は、口径約１〜３mm
程度の金属パイプ等の導電性材料で成形されて、
塗油剤供給ホース７と共に絶縁性材料で成るカバ
ー９の内面に沿つて配設され、静電塗油機Ｔの本
体３から離間せられている。 In addition, the lubricant discharge nozzle 8 has a diameter of approximately 1 to 3 mm.
Molded from conductive materials such as metal pipes,
It is arranged along the inner surface of a cover 9 made of an insulating material together with the lubricating agent supply hose 7, and is spaced apart from the main body 3 of the electrostatic lubricating machine T.
即ち、塗油剤吐出ノズル８は、その後端側が静
電塗油機Ｔの本体３を収容するカバー９の筒状部
９ａに入れられ、前記本体２から離間して筒状部
９ａの内面に固設されたノズル固定金具１０によ
つて固定されている。 That is, the lubricant discharge nozzle 8 has its rear end inserted into the cylindrical part 9a of the cover 9 that accommodates the main body 3 of the electrostatic oil applicator T, and is spaced apart from the main body 2 and fixed to the inner surface of the cylindrical part 9a. It is fixed by a nozzle fixing fitting 10 provided.
ノズル固定金具１０は、塗油剤吐出ノズル８を
カツプ状体６に対して進退可能に支持するノズル
挿通孔１１が穿設され、当該ノズル挿通孔１１内
に挿通された塗油剤吐出ノズル８の固定地位置を
止めネジ１２によつて調節し得るように成されて
いる。 The nozzle fixing fitting 10 is provided with a nozzle insertion hole 11 that supports the lubricant discharge nozzle 8 so as to be movable forward and backward relative to the cup-shaped body 6, and fixes the lubricant discharge nozzle 8 inserted into the nozzle insertion hole 11. The ground position can be adjusted using a set screw 12.
また、ノズル固定金具１０には、、静電塗油機
Ｔの本体３との間に例えば約250MΩの抵抗１３
が接続されると共に、アースに接続される約
5000MΩの抵抗１４が接続され、高電圧ケーブル
２を介して、静電塗油機Ｔの本体３に対して高電
圧発生器からD.C.（−）80Kvの高電圧が印加され
た時に、ノズル固定金具１０に固定された塗油剤
吐出ノズル８には約D.C.（−）76Kv程度の高電圧
が印加され、当該塗油剤吐出ノズル８とカツプ状
対６との間に約4Kv程度の電位差を生じさせて、
塗油剤吐出ノズル８の吐出口８ａとカツプ状体６
との間に、吐出口８ａから吐出された塗油剤の粒
子もしくは液滴をカツプ状体６の内面に吸着させ
る電解が形成されるようになされている。 The nozzle fixing fitting 10 also has a resistor 13 of approximately 250 MΩ between it and the main body 3 of the electrostatic oil applicator T.
is connected and also connected to earth.
When a 5000 MΩ resistor 14 is connected and a high voltage of DC (-) 80 Kv is applied from a high voltage generator to the main body 3 of the electrostatic oil applicator T via the high voltage cable 2, the nozzle fixing bracket A high voltage of approximately DC (-) 76 Kv is applied to the lubricant discharge nozzle 8 fixed to the lubricant discharge nozzle 8, and a potential difference of approximately 4 Kv is generated between the lubricant discharge nozzle 8 and the cup-shaped pair 6. ,
Discharge port 8a of lubricant discharge nozzle 8 and cup-shaped body 6
Electrolysis is formed between the cup-shaped body 6 and the cup-shaped body 6 so that particles or droplets of the lubricant discharged from the discharge port 8a are adsorbed onto the inner surface of the cup-shaped body 6.
なお、高電位側となる塗油剤吐出ノズル８の吐
出口８ａと、低電位側となるカツプ状体６の内面
との間隔は、ノズル固定金具１０に対する塗油剤
吐出ノズル８の固定位置を止めネジ１２で調節す
ることによつて、吐出口８ａから吐出される塗油
剤をカツプ状体６の内面に対して効果的に吸着さ
せる電解を形成し得る最適な間隔に選定すること
ができ、本例の場合は約２〜３mm程度に選定され
ている。 The distance between the discharge port 8a of the lubricant discharge nozzle 8, which is on the high potential side, and the inner surface of the cup-shaped body 6, which is on the low potential side, is determined by a screw that fixes the fixing position of the lubricant discharge nozzle 8 with respect to the nozzle fixing fitting 10. 12, it is possible to select the optimum interval that can form an electrolysis that effectively adsorbs the lubricant discharged from the discharge port 8a to the inner surface of the cup-shaped body 6. In this case, approximately 2 to 3 mm is selected.
また、カバー９は、前後両端面が開放された筒
状部９ａと、当該筒状部９ａの下面に沿つて一体
的に突設されたひれ状のケース部９ｂとから形成
されている。ケース部９ｂは、その下端が先端部
から後端部側に向かつて一定の角度で下方に傾斜
する傾斜面に成形され、その後端面が開放される
と共に、先端部側が筒状部９ａに穿設された透孔
１５を通じて当該筒状部９ａ内に連通せられてい
る。 The cover 9 is formed from a cylindrical portion 9a with open front and rear end surfaces, and a fin-like case portion 9b integrally protruding along the lower surface of the cylindrical portion 9a. The case portion 9b has a lower end formed into an inclined surface that slopes downward at a constant angle from the tip to the rear end, and the rear end is open and the tip is bored into the cylindrical portion 9a. It is communicated with the inside of the cylindrical portion 9a through the through hole 15.
また、筒状部９ａ内には、ノズル固定金具１０
に固定されている塗油剤吐出ノズル８の後端部に
連結された塗油剤供給ホース７が静電塗油機Ｔの
本体３と離隔するように筒状部９ａの内壁に沿つ
て配設されている。一方、ケース部９ｂ内には、
ノズル固定金具１０に接続される抵抗１４が当該
ケース部９ｂの下端に形成された前記傾斜面上に
沿つて固設されている。これによつて、筒状部９
ａに内収容された静電塗油機Ｔの本体３及び塗油
剤供給ホース７と、ケース部９ｂ内に収容された
抵抗１４及びその導線との間には、放電作用を防
止する十分な絶縁距離が確保されている。 Further, a nozzle fixing fitting 10 is provided inside the cylindrical portion 9a.
A lubricant supply hose 7 connected to the rear end of a lubricant discharge nozzle 8 fixed to is arranged along the inner wall of the cylindrical portion 9a so as to be separated from the main body 3 of the electrostatic lubricator T. ing. On the other hand, inside the case part 9b,
A resistor 14 connected to the nozzle fixture 10 is fixed along the inclined surface formed at the lower end of the case portion 9b. With this, the cylindrical part 9
Sufficient insulation is provided between the main body 3 and lubricant supply hose 7 of the electrostatic lubricator T housed in the case part 9b, and the resistor 14 and its conductor housed in the case part 9b to prevent discharge action. Distance is ensured.
また、エアモータ４の回転軸５には、カツプ状
体６と本体３との間に、カバー９の筒状部９ａの
先端縁よりも僅か内側に位置して本体３の先端部
を覆う円形の回転板１６が取り付けられている。 Further, on the rotation shaft 5 of the air motor 4, between the cup-shaped body 6 and the main body 3, there is a circular shape located slightly inside the tip edge of the cylindrical portion 9a of the cover 9 and covering the tip of the main body 3. A rotating plate 16 is attached.
なお、この回転板１６の周縁と筒状部９ａの内
周面との間の隙間は、例えば約７〜10mm程度の間
隔に選定されて、回転板１６の回転によつて当該
回転板１６の周縁とカバー９の筒状部９ａの内周
面との間に負圧状態を生じさせ、筒状部９ａの先
端縁に形成される塗油剤の液滴を空気と一緒に当
該筒状部９ａ内に吸引し得るように成されてい
る。 Note that the gap between the peripheral edge of the rotary plate 16 and the inner circumferential surface of the cylindrical portion 9a is selected to be approximately 7 to 10 mm, for example, so that the rotation of the rotary plate 16 causes the rotation of the rotary plate 16 to A negative pressure state is created between the peripheral edge and the inner circumferential surface of the cylindrical portion 9a of the cover 9, and droplets of the lubricant formed on the tip edge of the cylindrical portion 9a are transferred together with air to the cylindrical portion 9a. It is designed so that it can be sucked into the body.
また、筒状部９ａ内からカツプ状体６内に向け
て延設される塗油剤吐出ノズル８は、回転板１６
の周縁やカツプ状体６の周壁との間に、当該塗油
剤吐出ノズル８の吐出口８ａとカツプ状体６の内
面との間隔（例えば、２〜３mm）よりも大きい間
隔（例えば、４〜５mm）を保持し得る所定の形状
に折り曲げられている。 Further, the lubricant discharge nozzle 8 extending from the inside of the cylindrical part 9a toward the inside of the cup-like body 6 is connected to the rotating plate 16.
or the peripheral wall of the cup-shaped body 6, there is a gap (for example, 4 to 3 mm) larger than the interval (for example, 2 to 3 mm) between the discharge port 8a of the lubricant discharge nozzle 8 and the inner surface of the cup-shaped body 6. 5mm) is bent into a predetermined shape that can hold the length.
また、静電塗油機Ｔの本体３は、その後端が絶
縁支持部材１７に固着されて水平に配設されてい
る。 Further, the main body 3 of the electrostatic oil applicator T is horizontally disposed with its rear end fixed to an insulating support member 17.
しかして、高電圧発生器１から高電圧ケーブル
２を介してカツプ状体６にD.C.（−）80Kv程度の
高電圧を印加すると共に、エアホース１８から送
給される高圧エアで駆動されるエアモータ４によ
つて当該カツプ状体６を約20000〜50000rpm程度
で高速回転駆動させる。 Thus, a high voltage of about DC (-) 80 Kv is applied from the high voltage generator 1 to the cup-shaped body 6 via the high voltage cable 2, and the air motor 4 is driven by high pressure air supplied from the air hose 18. The cup-shaped body 6 is driven to rotate at a high speed of approximately 20,000 to 50,000 rpm.
そして、被塗油物となる金属板Ｋを所定速度で
連続的に搬送させると共に、塗油剤供給ホース７
を通じて送給される塗油剤を塗油剤吐出ノズル８
の吐出口８ａから連続的に霧化して粒子状態で吐
出する。 Then, the metal plate K to be oiled is continuously conveyed at a predetermined speed, and the lubricant supply hose 7
The lubricant delivered through the lubricant discharge nozzle 8
It is continuously atomized and discharged in the form of particles from the discharge port 8a.
このとき、約（−）78Kvの高電圧が印加され
た塗油剤吐出ノズル８の吐出口８ａと、（−）
80Kvの高電圧が印加されたカツプ状体６の内面
との間には約4Kv程度の電位差を生じて電界が形
成されているから、高電位側の吐出口８ａから帯
電して吐出された塗油剤粒子が電界のイオン移動
作用により対極となる定電位側のカツプ状体６に
吸着される。 At this time, the discharge port 8a of the lubricant discharge nozzle 8 to which a high voltage of approximately (-)78Kv was applied, and (-)
Since a potential difference of approximately 4 Kv is generated between the inner surface of the cup-shaped body 6 to which a high voltage of 80 Kv is applied, and an electric field is formed, the charged coating material discharged from the discharge port 8a on the high potential side The oil particles are adsorbed to the cup-shaped body 6 on the constant potential side, which is the opposite electrode, due to the ion movement effect of the electric field.
したがつて、塗油剤吐出ノズル８の吐出口８ａ
から吐出される塗油剤粒子がカツプ状体６の遠心
力で跳ね返されることなく、当該カツプ状体６内
に効率的に付着して確実に定量供給されることと
なる。 Therefore, the discharge port 8a of the lubricant discharge nozzle 8
The lubricant particles discharged from the cup-shaped body 6 are not bounced off by the centrifugal force of the cup-shaped body 6, but are efficiently adhered to the inside of the cup-shaped body 6, and are reliably supplied in a fixed amount.
また、カツプ状体６と塗油剤吐出ノズル８との
間の電位差が約4Kv程度であつて、電流値は約
0.015×10-3程度と極めて小さいものであるから、
火花放電による塗油剤の引火の危険性は皆無であ
る。 Further, the potential difference between the cup-shaped body 6 and the lubricant discharge nozzle 8 is about 4Kv, and the current value is about
Since it is extremely small at around 0.015×10 -3 ,
There is no risk of the lubricant catching fire due to spark discharge.
なお、実施例によれば、使用する抵抗１３及び
１４の抵抗値やカツプ状体６に印加する電圧値等
に応じて、ノズル固定金具１０の止めネジ１２に
より塗油剤吐出ノズル８の固定位置を調節し、吐
出口８ａとカツプ状体６の内面との間隔を微妙に
変更するとによつて、塗油剤吐出ノズル８の吐出
口８ａとカツプ状体６の内面との間における電界
の強さが最適になるように微調節できる。 According to the embodiment, the fixed position of the lubricant discharge nozzle 8 can be adjusted by the set screw 12 of the nozzle fixing fitting 10 depending on the resistance values of the resistors 13 and 14 used, the voltage value applied to the cup-shaped body 6, etc. By adjusting and slightly changing the distance between the discharge port 8a and the inner surface of the cup-shaped body 6, the strength of the electric field between the discharge port 8a of the lubricant discharge nozzle 8 and the inner surface of the cup-shaped body 6 can be adjusted. You can fine-tune it to get the best fit.
また、静電塗油機Ｔの本体３及び塗油剤供給ホ
ース７がカバー９の筒状部９ａ内に配され、アー
スに接続された抵抗１４及びその導線が筒状部９
ａの下面で仕切られたケース部９ｂ内の下端側傾
斜面に沿つて配されているので、静電塗油機Ｔの
本体３及び塗油剤供給ホース７から抵抗１４の導
線に放電して電圧降下を生ずることが防止され
る。 Further, the main body 3 of the electrostatic oil applicator T and the lubricant supply hose 7 are arranged in the cylindrical part 9a of the cover 9, and the resistor 14 connected to the ground and its conductor are connected to the cylindrical part 9.
Since it is arranged along the lower end side inclined surface in the case part 9b partitioned by the lower surface of a, a voltage is generated by discharging from the main body 3 of the electrostatic oil applicator T and the lubricant supply hose 7 to the conductor wire of the resistor 14. This prevents any drop from occurring.
したがつて、塗油剤が塗油剤吐出ノズル８の吐
出口８ａからのカツプ状体６に間断なく定量供給
することできると同時に、カツプ状体６から静電
霧化される塗油剤粒子の微粒化度も極めて良好に
維持することができる。 Therefore, the lubricant can be continuously and quantitatively supplied to the cup-shaped body 6 from the discharge port 8a of the lubricant discharge nozzle 8, and at the same time, the lubricant particles electrostatically atomized from the cup-shaped body 6 are atomized. The temperature can also be maintained extremely well.
また、ノズル固定金具１０、抵抗１３及び抵抗
１４は、総てカバー９内に収容されているから、
これらの表面にカツプ状体６から静電霧化された
塗油剤粒子が付着して塗油剤の液滴を形成し、そ
の液滴が高電圧の作用により大きな塗油剤粒子と
なつて飛び出すことも防止でされる。 Furthermore, since the nozzle fixing fitting 10, the resistor 13, and the resistor 14 are all housed within the cover 9,
The electrostatically atomized lubricant particles from the cup-shaped body 6 adhere to these surfaces to form lubricant droplets, and the droplets may fly out as large lubricant particles due to the action of high voltage. Prevention is done.
また、カバー９の表面に付着した塗油剤は、そ
の筒状部９ａからケース部９ｂに流下し、当該ケ
ース部９ｂの下端に形成された傾斜面を伝つて静
電塗油機Ｔの後端側に移行するから、カバー９の
表面に付着した塗油剤の液滴が静電塗油機Ｔの先
端と金属板Ｋとの間に形成される電界の作用によ
つて金属板Ｋの表面に向かつて飛び出すことが防
止される。 Further, the lubricant adhering to the surface of the cover 9 flows down from the cylindrical part 9a to the case part 9b, and travels along the slope formed at the lower end of the case part 9b to the rear end of the electrostatic lubricator T. As the lubricant droplets adhere to the surface of the cover 9, they are transferred to the surface of the metal plate K by the action of the electric field formed between the tip of the electrostatic oil applicator T and the metal plate K. This prevents the person from jumping out towards the target.
更に、カバー９の筒状部９ａ内の先端側は、回
転板１６の回転により負圧状態となつて空気が吸
い込まれるように成されているから、カバー９の
筒状部９ａの先端縁に付着する塗油剤の液滴が当
該筒状部９ａ内に吸引され、金属板Ｋ方向に飛び
出すことが防止される。 Furthermore, since the tip side of the cylindrical portion 9a of the cover 9 is configured to be in a negative pressure state due to the rotation of the rotary plate 16 and air is sucked in, the tip end of the cylindrical portion 9a of the cover 9 is Droplets of the lubricant that adhere to the cylindrical portion 9a are sucked into the cylindrical portion 9a, and are prevented from flying out in the direction of the metal plate K.
したがつて、金属板Ｋの表面に大きな塗油剤粒
子が付着してオイル・スポツトを生ずることが確
実に防止される。 Therefore, it is reliably prevented that large lubricant particles adhere to the surface of the metal plate K and cause oil spots.
更にまた、カバー９の筒状部９ａ及びケース部
９ｂは何れもその後端部が開放され、筒状部９ａ
内にはその先端開口部から回転板１６の回転によ
つて吸い込まれた空気が後端部に抜けるように流
通し、ケース部９ｂ内には筒状部９ａ内に吸い込
まれた空気が透孔１５から流入して後端部に抜け
るように流通するから、筒状部９ａ内に配された
抵抗１３と、ケース部９ｂ内に配された抵抗１４
が冷却されてその発熱が抑えられる。 Furthermore, both the cylindrical part 9a and the case part 9b of the cover 9 are open at their rear ends, and the cylindrical part 9a
The air sucked in by the rotation of the rotary plate 16 flows through the opening at the tip of the case portion 9b to the rear end, and the air sucked into the cylindrical portion 9a flows through the case portion 9b. 15 and exits to the rear end, the resistor 13 disposed inside the cylindrical portion 9a and the resistor 14 disposed within the case portion 9b are connected to each other.
is cooled and its heat generation is suppressed.
したがつて、抵抗１３及び１４の過熱による劣
化や火災の発生等を防止することができる。 Therefore, deterioration of the resistors 13 and 14 due to overheating, occurrence of fire, etc. can be prevented.
なお、上記実施例においては、塗油剤吐出ノズ
ル８の吐出口ａから塗油剤を粒子化して吐出する
場合について説明したが、塗油剤を液滴の状態で
吐出する場合にも同様の効果が得られる。 In the above embodiments, the case where the lubricant is discharged in the form of particles from the discharge port a of the lubricant discharge nozzle 8 has been described, but the same effect can be obtained when the lubricant is discharged in the form of droplets. It will be done.
以上述べたように、本発明にれば、塗油剤吐出
ノズルから吐出される塗油剤の粒子もくしくは液
滴が電界のイオン移動作用によつてカツプ状体に
吸着されるから、塗油剤吐出ノズルから極く微量
の塗油剤を連続的に微粒化して吐出する場合であ
つても、その塗油剤粒子が高速回転するカツプ状
体に跳ね返されることなく、当該カツプ状体内に
効率的に定量供給されて塗油ムラの発生等を確実
に防止することができるという優れた効果があ
る。
As described above, according to the present invention, particles or droplets of the lubricant discharged from the lubricant discharge nozzle are adsorbed to the cup-shaped body by the ion movement effect of the electric field, so the lubricant Even when a very small amount of lubricant is continuously atomized and discharged from the discharge nozzle, the lubricant particles are not bounced off by the cup-shaped body that rotates at high speed, and are efficiently quantified into the cup-shaped body. This has the excellent effect of reliably preventing the occurrence of uneven oil application.
第１図は本発明による静電塗油機の一例を示す
側面図、第２図は当該静電塗油機を収容するカバ
ーの背面図、第３図は従来の静電塗油機を示す側
面図である。
符号の説明、Ｔ……静電塗油機、１……高電圧
発生器、２……高電圧ケーブル、３……静電塗油
機の本体、４……エアモータ、５……回転軸、６
……カツプ状体、７……塗油剤供給ホース、８…
…塗油剤吐出ノズル、８ａ……吐出口、１３，１
４……抵抗。
Figure 1 is a side view showing an example of an electrostatic oil applicator according to the present invention, Figure 2 is a rear view of a cover that houses the electrostatic oil applicator, and Figure 3 is a conventional electrostatic oil applicator. FIG. Explanation of symbols, T: Electrostatic oil applicator, 1: High voltage generator, 2: High voltage cable, 3: Main body of electrostatic oil applicator, 4: Air motor, 5: Rotating shaft, 6
...Cup-shaped body, 7...Lubricant supply hose, 8...
...Lubricant discharge nozzle, 8a...Discharge port, 13,1
4...Resistance.
Claims (1)
ツプ状体内に塗油剤吐出ノズルから一定量の塗油
剤を供給して静電霧化する静電塗油機において、
塗油剤吐出ノズルが導電性材料で成形されて静電
塗油機の本体から絶縁離隔して設けられ、当該塗
油剤吐出ノズルとカツプ状体との間に一定の電位
差を生じさせて塗油剤吐出ノズルから吐出された
塗油剤の粒子もしくは液滴をカツプ状体に吸着さ
せる電界が形成されるように成されていることを
特徴とする静電塗油機。1. In an electrostatic oil applicator that supplies a certain amount of lubricant from a lubricant discharge nozzle into a cup-shaped body to which a high voltage is applied and is driven to rotate at high speed, and electrostatically atomizes the lubricant,
A lubricant discharge nozzle is formed of a conductive material and is provided insulated and separated from the main body of the electrostatic lubricator, and a constant potential difference is created between the lubricant discharge nozzle and the cup-shaped body to discharge the lubricant. 1. An electrostatic oil applicator characterized in that an electric field is formed to cause particles or droplets of a lubricant discharged from a nozzle to be attracted to a cup-shaped body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30624486A JPS63162056A (en) | 1986-12-24 | 1986-12-24 | Electrostatic oil coating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30624486A JPS63162056A (en) | 1986-12-24 | 1986-12-24 | Electrostatic oil coating machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63162056A JPS63162056A (en) | 1988-07-05 |
| JPH0412194B2 true JPH0412194B2 (en) | 1992-03-03 |
Family
ID=17954736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30624486A Granted JPS63162056A (en) | 1986-12-24 | 1986-12-24 | Electrostatic oil coating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63162056A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200468357Y1 (en) * | 2012-04-25 | 2013-08-08 | 주식회사 유아이케이 | Lighting advertising device with ceiling hanger |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397063A (en) * | 1992-04-01 | 1995-03-14 | Asahi Sunac Corporation | Rotary atomizer coater |
-
1986
- 1986-12-24 JP JP30624486A patent/JPS63162056A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200468357Y1 (en) * | 2012-04-25 | 2013-08-08 | 주식회사 유아이케이 | Lighting advertising device with ceiling hanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63162056A (en) | 1988-07-05 |
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