JPH0350583B2 - - Google Patents
Info
- Publication number
- JPH0350583B2 JPH0350583B2 JP15139685A JP15139685A JPH0350583B2 JP H0350583 B2 JPH0350583 B2 JP H0350583B2 JP 15139685 A JP15139685 A JP 15139685A JP 15139685 A JP15139685 A JP 15139685A JP H0350583 B2 JPH0350583 B2 JP H0350583B2
- Authority
- JP
- Japan
- Prior art keywords
- electrostatic
- coating
- coated
- electrostatic coating
- cup
- 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
- 239000011248 coating agent Substances 0.000 claims description 47
- 238000009503 electrostatic coating Methods 0.000 claims description 39
- 238000000576 coating method Methods 0.000 claims description 21
- 239000007921 spray Substances 0.000 claims description 17
- 238000007610 electrostatic coating method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000000889 atomisation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000012756 surface treatment agent Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、高電圧が印加され且つ高速回転駆動
されるカツプ状体から所定の噴霧パターンで塗布
剤を噴霧する静電塗布機により、帯状板体に形成
されて所定速度で連続的に搬送される鋼板、アル
ミニユウム板あるいは銅板等の被塗物の表面に対
して各種表面処理剤となる塗布剤を静電塗着させ
る静電塗布方法に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention is a method of applying a coating material to a strip by using an electrostatic coating machine that sprays a coating material in a predetermined spray pattern from a cup-shaped body to which a high voltage is applied and which is driven to rotate at high speed. Relating to an electrostatic coating method for electrostatically coating the surface of a workpiece, such as a steel plate, aluminum plate, or copper plate, which is formed into a plate and is conveyed continuously at a predetermined speed. .
第２図は従来の静電塗布方法を示す静電塗布装
置の平面図、第３図はその正面図であつて、例え
ばDC−80〜120Kv程度の直流高電圧が印加され
且つ20000〜50000rpm程度で高速回転駆動される
カツプ状体１内に塗布剤を供給し、該塗布剤をカ
ツプ状体１の先端から微粒化状態で吐出して所定
の噴霧パターンＰを形成するように成された静電
塗布機T1，T2及びT3をチヤンバ２内に配設し、
カツプ状体１を陰極とし接地されて連続的に搬送
される被塗物３を陽極として両極間に静電場を形
成させ、カツプ状体１から帯電せられて噴霧され
た塗布剤粒子を反対極である被塗物３の表面に電
気的吸引力で吸着させて静電塗着するようにして
いる。
Fig. 2 is a plan view of an electrostatic coating device showing a conventional electrostatic coating method, and Fig. 3 is a front view thereof. The static sprayer is configured to supply a coating agent into the cup-shaped body 1 which is driven to rotate at high speed, and to discharge the coating agent in an atomized state from the tip of the cup-shaped body 1 to form a predetermined spray pattern P. Electrocoating machines T 1 , T 2 and T 3 are arranged in the chamber 2,
The cup-shaped body 1 is used as a cathode, and the grounded and continuously conveyed workpiece 3 is used as an anode to form an electrostatic field between the two electrodes, and the coating agent particles charged and sprayed from the cup-shaped body 1 are sent to the opposite pole. The coating material 3 is electrostatically applied by being attracted to the surface of the object 3 by electric attraction.
そして、比較的幅広の帯状板体に形成されて所
定速度で連続的に搬送される被塗物３の表面に対
して塗布剤を均一に静電塗着させるために、図示
の如く各静電塗布機T1〜T3を被塗物３に対向さ
せ且つ斜め一列（又は千鳥状）に変移させて並設
し、各噴霧パターンＰが隣接する噴霧パターンＰ
と被塗物３の搬送方向（矢印Ｆ図示）から見てそ
の一部が互いに適正に重なり合うようにしてい
る。 In order to electrostatically apply the coating agent uniformly to the surface of the object 3 to be coated, which is formed into a relatively wide band-shaped plate and is conveyed continuously at a predetermined speed, each electrostatic charge is applied as shown in the figure. The coating machines T 1 to T 3 are arranged side by side facing the object to be coated 3 and shifted in a diagonal line (or in a staggered manner), so that each spray pattern P has an adjacent spray pattern P.
When viewed from the conveying direction of the object 3 to be coated (as shown by the arrow F), a portion thereof overlaps each other appropriately.
ところで、帯状鋼板等から成る被塗物３の表面
に対して、例えば防錆あるいは機械加工性の向上
等を目的として防錆油等の表面処理剤を塗布する
場合には、塗布剤を極微細に微粒化して塗布膜を
出来るだけ薄く且つ均一に形成することが望まれ
る。 By the way, when applying a surface treatment agent such as anti-corrosion oil to the surface of the object 3 made of a steel strip or the like for the purpose of preventing rust or improving machinability, the agent is applied in extremely fine particles. It is desirable to form a coating film as thin and uniform as possible by atomizing the particles.
しかしながら、上記のような各静電塗布機T1
〜T3のみによつて塗布剤の微粒化を高めるには
一定の限界があつた。 However, each electrostatic applicator T 1 as mentioned above
There was a certain limit to increasing the atomization of the coating agent only by using ~ T3 .
即ち、従来方法によつて塗布剤の微粒化を促進
するには、各静電塗布機T1〜T3のカツプ状体１
の回転数を上げると共に、該カツプ状体１に供給
する塗布剤の吐出量を減少させて塗布剤粒子の粒
径を細かくする以外にないが、このようにカツプ
状体１の塗布剤吐出量を減少させた場合には被塗
物３を従来と同様の速度で搬送すると該被塗物３
に対して塗布される塗布剤の絶対量が減少し、被
塗物３の表面に塗布ムラを生じて製品品質を損な
うという問題がある。したがつて、この問題を回
避するためにはカツプ状体１からの塗布剤吐出量
の低減に伴つて被塗物３の搬送速度も低下させる
ことにより塗布ムラを防止せざるを得ない。 That is, in order to promote atomization of the coating agent by the conventional method, the cup-shaped body 1 of each electrostatic coating machine T 1 to T 3 is
The only way to reduce the particle size of the coating agent particles is to increase the rotational speed of the cup-shaped body 1 and reduce the discharge amount of the coating agent supplied to the cup-shaped body 1. When the object 3 to be coated is conveyed at the same speed as before, the object 3 to be coated is
There is a problem in that the absolute amount of the coating agent applied to the object 3 decreases, causing uneven coating on the surface of the object 3 and impairing product quality. Therefore, in order to avoid this problem, it is necessary to reduce the amount of coating material discharged from the cup-shaped body 1 and to reduce the conveyance speed of the object 3 to prevent uneven coating.
しかし、このように被塗物３の搬送速度を低下
させると、製品の生産能率が著しく低下するとい
う新たな弊害が生ずる。 However, when the transport speed of the object 3 to be coated is reduced in this manner, a new problem arises in that the production efficiency of the product is significantly reduced.
そこで本発明は、被塗物の搬送速度を低下させ
ることなく、また塗布ムラを生じさせることなく
被塗物の表面に対して極く微細な塗布を行うこと
ができる静電塗布方法を提供することを目的とす
る。
Therefore, the present invention provides an electrostatic coating method that can perform extremely fine coating on the surface of an object to be coated without reducing the conveyance speed of the object or causing uneven coating. The purpose is to
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か
ら所定の噴霧パターンで塗布剤を噴霧する静電塗
布機によつて、帯状板体に形成されて所定速度で
連続的に搬送される被塗物の表面に塗布剤を静電
塗着させる静電塗布方法において、前記静電塗布
機から見て前記被塗物の搬送方向に沿つた延長線
上に該静電塗布機と同一の噴霧パターンを形成す
る補助用静電塗布機を少なくとも一以上配設し、
該補助用静電塗布機と前記静電塗布機とによつて
前記被塗物の表面に所要量の塗布剤を静電塗着さ
せるようにしたことを特徴とする。
In order to achieve this object, the present invention has been developed to form a coating material onto a band-shaped plate by an electrostatic coating machine that sprays a coating agent in a predetermined spray pattern from a cup-shaped body to which a high voltage is applied and which is driven to rotate at high speed. In an electrostatic coating method in which a coating agent is electrostatically applied to the surface of an object to be coated that is continuously conveyed at a predetermined speed, an extension along the conveyance direction of the object to be coated when viewed from the electrostatic coating machine. At least one auxiliary electrostatic coating machine that forms the same spray pattern as the electrostatic coating machine is disposed on the line,
The present invention is characterized in that the auxiliary electrostatic coating machine and the electrostatic coating machine electrostatically coat a required amount of coating agent on the surface of the object to be coated.
本発明方法によれば、連続的に搬送される被塗
物の表面に塗布すべき所要量の塗布剤を、同一の
噴霧パターンで同一箇所を塗布する二以上の静電
塗布機に等分して噴霧することができるから、こ
れら各静電塗布機からの塗布剤吐出量が低減され
て、塗布剤の微粒化状態が従来方法に比較して少
なくとも二倍以上に高められる。
According to the method of the present invention, the required amount of coating material to be applied to the surface of a continuously conveyed object is equally divided between two or more electrostatic coating machines that apply the same area with the same spray pattern. Therefore, the amount of coating agent discharged from each of these electrostatic coating machines is reduced, and the state of atomization of the coating agent is increased to at least twice as much as in the conventional method.
また、このように同一箇所を塗布する各静電塗
布機からの塗布剤吐出量は個々に低減されている
が、各静電塗布機の吐出量の総和には変更がない
から、被塗物の搬送速度を低下させなくともその
表面に塗布ムラを生ずることがない。 In addition, although the amount of coating material discharged from each electrostatic applicator that coats the same area has been reduced individually, the total amount of dispensing agent from each electrostatic applicator remains unchanged. Even without reducing the conveyance speed, uneven coating will not occur on the surface.
以下、本発明方法を図面に示す実施例に基づい
て具体的に説明する。
Hereinafter, the method of the present invention will be specifically explained based on examples shown in the drawings.
第１図は本発明方法を示す静電塗布装置の概略
平面図であつて、帯状板体に形成された被塗物３
を搬入出する搬入口４及び搬出口５が形成された
チヤンバ２内に、静電塗布機T1〜T3が千鳥状に
変移して並設されると共に、これら各静電塗布機
T1〜T3から見て被塗物３の搬送方向Ｆに沿つた
延長線f1〜f3上に夫々各静電塗布機T1〜T3と同一
の噴霧パターンＰを形成して被塗物３の表面の同
一箇所を塗布する補助用静電塗布機t1〜t3が配設
されている。 FIG. 1 is a schematic plan view of an electrostatic coating apparatus illustrating the method of the present invention, in which a coated object 3 formed on a strip-shaped plate body is shown.
Electrostatic coating machines T 1 to T 3 are arranged in a staggered manner in a chamber 2 in which a carrying-in port 4 and a carrying-out port 5 are formed, and each of these electrostatic coating machines
Spray patterns P identical to those of the electrostatic coating machines T 1 to T 3 are formed on extension lines f 1 to f 3 along the transport direction F of the object 3 when viewed from T 1 to T 3 to coat the object. Auxiliary electrostatic coating machines t1 to t3 are provided to coat the same area on the surface of the object 3.
各補助用静電塗布機t1〜t3は、第３図に示すよ
うに高電圧が印加され且つ高速回転駆動されるカ
ツプ状体１を有し、静電塗布機T1〜T3と同様に
千鳥状に配設されて、各噴霧パターンＰが隣接す
る噴霧パターンＰと被塗物３の噴霧方向Ｆから見
てその一部が互いに適正に重なり合うように成さ
れている。 Each of the auxiliary electrostatic coating machines t 1 to t 3 has a cup-shaped body 1 to which a high voltage is applied and is driven to rotate at high speed, as shown in FIG . Similarly, they are arranged in a staggered manner so that each spray pattern P and an adjacent spray pattern P partially overlap each other when viewed from the spray direction F of the object 3 to be coated.
以上が第１図に示す静電塗布装置の概略構成で
あり、次にこれを用いて本発明方法について説明
する。 The above is the schematic structure of the electrostatic coating apparatus shown in FIG. 1, and the method of the present invention will be explained next using this.
まず、被塗物３を矢印Ｆ方向に所定速度で連続
的に搬送させると同時に、静電塗布機T1〜T3及
びt1〜t3の各カツプ状体１に例えばDC−80〜
120Kv程度の高電圧を印加し且つ20000〜
50000rpmで高速回転駆動させる。 First, the object to be coated 3 is conveyed continuously at a predetermined speed in the direction of arrow F, and at the same time, each cup-shaped body 1 of the electrostatic coating machines T 1 to T 3 and t 1 to t 3 is coated with, for example, DC-80 to
Apply a high voltage of about 120Kv and 20000~
Drive at high speed rotation at 50000rpm.
また、これと同時に被塗物３の表面に塗布すべ
き単位面積当たりの所要塗布量と被塗物３の搬送
速度とに基づいて、同一箇所を塗布する一対の静
電塗布機T1及び補助用静電塗布機t1（同じくT2及
びt2と、T3及びt3）に対する塗布剤供給量の総和
（例えば、１c.c.／min）を算出し、これを1/2に等
分した量（0.5c.c.／min）に相当する塗布剤を
夫々各静電塗布機T1及びt1（又はT2及びt2と、T3
及びt3）に供給する。 At the same time, a pair of electrostatic coating machines T 1 and an auxiliary device are installed to coat the same area based on the required amount of coating per unit area to be applied to the surface of the object 3 and the conveyance speed of the object 3 . Calculate the total amount of coating agent supplied (for example, 1 c.c./min) to the electrostatic coating machine t 1 (also T 2 and t 2 , and T 3 and t 3 ), and divide this by 1/2. The coating agent corresponding to the divided amount (0.5cc/min) is applied to each electrostatic coating machine T 1 and t 1 (or T 2 and t 2 , and T 3
and t3 ).
これにより、各静電塗布機T1〜T3のカツプ状
体１から噴霧される塗布剤吐出量が従来の1/2に
低減され、各静電塗布機T1〜T3による塗布剤の
微粒化が高められて従来にない微細な粒経の粒子
となつて被塗物３の表面に静電塗着される。 As a result, the amount of coating agent sprayed from the cup-shaped body 1 of each electrostatic applicator T 1 to T 3 is reduced to 1/2 of the conventional amount, and the amount of coating agent sprayed by each electrostatic applicator T 1 to T 3 is reduced to 1/2 of the conventional amount. The atomization is enhanced and the particles are electrostatically applied to the surface of the object 3 to be coated, with a finer particle size than ever before.
また、各静電塗布機T1〜T3のカツプ状体１か
らは、塗布剤が所要塗布量の1/2しか吐出されな
いが、不足する分が夫々の各静電塗布機T1〜T3
と同程度の微細な塗布ができる補助用静電塗布機
t1〜t3から吐出されて補填されるから、一対の静
電塗布機T1及び補助用静電塗布機t1（同じくT2及
びt2と、T3及びt3）による塗布剤吐出量の総和が
予め設定された所要塗布量に等しい。したがつ
て、被塗物３の搬送速度を低下させることなく、
塗布ムラのない微細な静電塗布を行うことができ
る。 Moreover, only 1/2 of the required amount of coating agent is discharged from the cup-shaped body 1 of each electrostatic coating machine T 1 to T 3 , but the insufficient amount is discharged from the cup-shaped body 1 of each electrostatic coating machine T 1 to T 3 . 3
An auxiliary electrostatic coating machine that can apply as fine a coating as the
Since the coating agent is discharged from t 1 to t 3 and replenished, the coating agent is discharged by the pair of electrostatic applicator T 1 and the auxiliary electrostatic applicator t 1 (also T 2 and t 2 and T 3 and t 3 ). The sum of the amounts is equal to the preset required application amount. Therefore, without reducing the conveyance speed of the object 3 to be coated,
Fine electrostatic coating can be performed without uneven coating.
なお、第１図では静電塗布機T1〜T3と補助用
静電塗布機t1〜t3を夫々千鳥状に変移して配設し
た場合を図示したが、本発明においては第３図に
示すように斜め一列に変移して配設しても勿論よ
い。 Although FIG. 1 shows the case where the electrostatic coating machines T 1 to T 3 and the auxiliary electrostatic coating machines t 1 to t 3 are arranged in a staggered manner, in the present invention, the third electrostatic coating machine Of course, they may be arranged in a diagonal line as shown in the figure.
また、被塗物３が比較的幅狭である場合には、
静電塗布機T1及びT3と補助用静電塗布機t1及びt3
を省略して、静電塗布機T2及び補助用静電塗布
機t2のみを配設する場合であつてもよい。 In addition, when the object 3 to be coated is relatively narrow,
Electrostatic applicator T 1 and T 3 and auxiliary electrostatic applicator T 1 and T 3
may be omitted and only the electrostatic coating machine T 2 and the auxiliary electrostatic coating machine t 2 are provided.
更に、静電塗布機と同一箇所を塗布する補助用
静電塗布機は一台に限らず、二台以上配設する場
合であつてもよい。 Furthermore, the number of auxiliary electrostatic applicators that apply the same area as the electrostatic applicator is not limited to one, and two or more auxiliary electrostatic applicators may be installed.
また、塗布剤も防錆油等に限らず、任意の表面
処理剤を用いることができる。 Further, the coating agent is not limited to antirust oil, etc., and any surface treatment agent can be used.
以上述べたように、本発明方法によれば、帯状
板体に形成されて連続的に搬送される被塗物の搬
送速度を低下させることなく、静電塗布機一台当
たりの塗布剤吐出量を低減させて塗布ムラのない
微細な塗布を行うことができるという優れた効果
がある。
As described above, according to the method of the present invention, the amount of coating agent discharged per electrostatic coating machine can be reduced without reducing the conveyance speed of the coated object formed on a strip-shaped plate and conveyed continuously. It has the excellent effect of reducing the amount of water and allowing fine coating without uneven coating.
第１図は本発明方法の一例を示す静電塗布装置
の概略平面図、第２図及び第３図は従来の静電塗
布方法を示す静電塗布装置の平面図及び正面図で
ある。
符号の説明、T1，T2，T3……静電塗布機、t1，
t2，t3……補助用静電塗布機、Ｐ……噴霧パター
ン、１……カツプ状体、３……被塗物。
FIG. 1 is a schematic plan view of an electrostatic coating device showing an example of the method of the present invention, and FIGS. 2 and 3 are a plan view and a front view of the electrostatic coating device showing a conventional electrostatic coating method. Explanation of symbols, T 1 , T 2 , T 3 ... Electrostatic coating machine, t 1 ,
t2 , t3 ...Auxiliary electrostatic coating machine, P...Spray pattern, 1...Cup-shaped body, 3...Object to be coated.
Claims (1)
ツプ状体から所定の噴霧パターンで塗布剤を噴霧
する静電塗布機によつて、帯状板体に形成されて
所定速度で連続的に搬送される被塗物の表面に塗
布剤を静電塗着させる静電塗布方法において、前
記静電塗布機から見て前記被塗物の搬送方向に沿
つた延長線上に該静電塗布機と同一の噴霧パター
ンを形成する補助用静電塗布機を少なくとも一以
上配設し、該補助用静電塗布機と前記静電塗布機
とによつて前記被塗物の表面に所要量の塗布剤を
静電塗着させるようにしたことを特徴とする静電
塗布方法。1. Formed into a strip-shaped plate and transported continuously at a predetermined speed by an electrostatic coating machine that sprays a coating agent in a predetermined spray pattern from a cup-shaped body to which a high voltage is applied and which is driven to rotate at high speed. In an electrostatic coating method in which a coating agent is electrostatically applied to the surface of an object to be coated, a spray identical to that of the electrostatic coating machine is provided on an extension line along the conveyance direction of the object to be coated when viewed from the electrostatic coating machine. At least one auxiliary electrostatic applicator for forming a pattern is provided, and the auxiliary electrostatic applicator and the electrostatic applicator electrostatically apply a required amount of coating agent to the surface of the object to be coated. An electrostatic coating method characterized by coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15139685A JPS6214966A (en) | 1985-07-11 | 1985-07-11 | Electrostatic coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15139685A JPS6214966A (en) | 1985-07-11 | 1985-07-11 | Electrostatic coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6214966A JPS6214966A (en) | 1987-01-23 |
| JPH0350583B2 true JPH0350583B2 (en) | 1991-08-02 |
Family
ID=15517668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15139685A Granted JPS6214966A (en) | 1985-07-11 | 1985-07-11 | Electrostatic coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6214966A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03249963A (en) * | 1990-02-26 | 1991-11-07 | Nippon Steel Corp | Method and equipment for coating electrostatic powder |
| JP5835313B2 (en) * | 2013-09-19 | 2015-12-24 | ダイキン工業株式会社 | Deposition equipment |
-
1985
- 1985-07-11 JP JP15139685A patent/JPS6214966A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6214966A (en) | 1987-01-23 |
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