JPH01255697A - Method for insulating electrodeposition - Google Patents
Method for insulating electrodepositionInfo
- Publication number
- JPH01255697A JPH01255697A JP8202588A JP8202588A JPH01255697A JP H01255697 A JPH01255697 A JP H01255697A JP 8202588 A JP8202588 A JP 8202588A JP 8202588 A JP8202588 A JP 8202588A JP H01255697 A JPH01255697 A JP H01255697A
- Authority
- JP
- Japan
- Prior art keywords
- electrodeposited
- electrodeposition
- auxiliary electrode
- auxiliary
- nozzle
- 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.)
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Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（ａ集土の利用分野）
この発明は、電気泳動法を利用する電着絶縁法に関する
もので、さらに詳しくは電気泳動法による電着絶縁被膜
形成が困難な形状の電気導体に補助電極を用い、これに
被電着体に電圧を印加し、さらに電着液液流補助ノズル
によって被電着体全面に電着液を環流させてなる電着絶
縁法に係るものである。Detailed Description of the Invention (a) Field of Application of Soil Collection This invention relates to an electrodeposited insulation method using electrophoresis, and more specifically, it relates to an electrodeposition insulation method that uses electrophoresis. An electrodeposition insulation method in which an auxiliary electrode is used as an electric conductor, a voltage is applied to the electrodeposited object, and the electrodeposited liquid is circulated over the entire surface of the electrodeposited object using an electrodeposited liquid flow auxiliary nozzle. It is.
第３図は例えば特開昭５１−３９１７８号、同５１−１
１４６０２号、同５３−９２１２９８号の各公報に開示
された電着絶縁法を実施するための装置であって、図に
おいて、（１）は電着槽、（２）は電着液循環流主ノズ
ル、（３ａ） 、 （３ｂ）は電着槽（１）内の電着液
（４）を環流するための電着液循環ポンプ、（５）は被
電着体となる電気導体、（６）は被電着体（５）に印加
した直流電源である。Figure 3 shows, for example, JP-A-51-39178 and JP-A-51-1.
14602 and No. 53-921298. In the figure, (1) is an electrodeposition bath, and (2) is a main electrodeposition liquid circulation flow. Nozzles, (3a) and (3b) are electrodeposition liquid circulation pumps for circulating the electrodeposition liquid (4) in the electrodeposition tank (1), (5) is an electric conductor to be electrodeposited, (6 ) is a DC power applied to the electrodeposited body (5).
上記した装置を用いることにより、被電着体（５）の断
面積が小さく、しかも単純な形状のものであれば被電着
体（５）の各部の電界が一様になりやすく、しかも電着
液（４）も環流状態が保たれて均一な電着絶縁層が形成
できる。By using the above-mentioned device, if the cross-sectional area of the electrodeposited object (5) is small and the shape is simple, the electric field in each part of the electrodeposited object (5) can be easily uniformized, and the electric field can be easily uniformized. The recirculation state of the deposited liquid (4) is also maintained, and a uniform electrodeposited insulating layer can be formed.
しかしながら、被電着体の形状の複雑なものや所定の大
きさの断面を組合せたもの等においては、被電着体の各
部間で電位差が生じ難いものもあり、しかも電着液の流
れが不均一になるものもあり、したがって好適な電着絶
縁皮膜を形成するのが困難であった。However, if the electrodeposited object has a complex shape or has a combination of cross sections of a predetermined size, it may be difficult to generate a potential difference between each part of the electrodeposited object, and the flow of the electrodeposition liquid may be difficult. In some cases, the electrodeposited insulating film is non-uniform, making it difficult to form a suitable electrodeposited insulating film.
この発明は上記したような課題を解消するためになされ
たもので、被電着体となる電気導体に均一な電着絶縁皮
膜を形成することのできる電着絶縁法を得ることを目的
とする。This invention was made in order to solve the above-mentioned problems, and its purpose is to obtain an electrodeposition insulation method that can form a uniform electrodeposited insulation film on an electrical conductor to be electrodeposited. .
この発明に係る電着絶縁法は、無機質粉末と水分散形ワ
ニスを含む電着液を用い、電気泳動法により被電着体に
電着層を電気折出させる方法において、補助電極と補助
ノズルを設け、補助電極に電圧を印加した状態で補助ノ
ズルより電着液を被電着体に向って流すようにしたもの
である。The electrodeposited insulation method according to the present invention uses an electrodeposition liquid containing an inorganic powder and a water-dispersed varnish, and uses an auxiliary electrode and an auxiliary nozzle to electrodeposit an electrodeposited layer on an electrodeposited body by electrophoresis. is provided, and the electrodeposition liquid is caused to flow toward the electrodeposited object from the auxiliary nozzle while a voltage is applied to the auxiliary electrode.
（作用〕
この発明においては、補助電極に電圧を印加し、補助ノ
ズルから電着液を被電着体に向って流すようにしたので
、被電着体に無機質粉末を含有する電着液を均一に電気
折出することができる。(Function) In this invention, a voltage is applied to the auxiliary electrode and the electrodeposition liquid is caused to flow from the auxiliary nozzle toward the electrodeposited object, so that the electrodeposition liquid containing inorganic powder is applied to the electrodeposited object. Can be electrically deposited uniformly.
（実施例〕
以下、この発明の一実施例を図について説明する。第１
図はこの発明による電着絶縁法を実施するために使用さ
れる装置の構成図であって、符号（１）〜（６）は第３
図に示した従来例の装置と同一であるので同一符号を付
して説明は省略する。(Example) Hereinafter, an example of the present invention will be explained with reference to the drawings.
The figure is a block diagram of an apparatus used to carry out the electrodeposition insulation method according to the present invention, and symbols (1) to (6) are the third
Since it is the same as the conventional device shown in the figure, the same reference numerals will be given and the explanation will be omitted.
（７）は被電着体（５）に対応して配置した補助電極で
、直流電源（６）に接続されている。（８）は電着槽（
１）に接続され、上記被電着体（５）に向ってノズル口
が位置する補助ノズルであって、循環ポンプ（３Ｃ）に
よって電着槽（１）内の電着液（４）が循環する。(7) is an auxiliary electrode arranged corresponding to the electrodeposited body (5), and is connected to a DC power source (6). (8) is an electrodeposition tank (
1), the nozzle opening of which is positioned facing the electrodeposited body (5), is an auxiliary nozzle that is connected to the electrodeposited body (5) and circulates the electrodeposition liquid (4) in the electrodeposition tank (1) by a circulation pump (3C). do.
補助電極（７） は被電着体（５）の形状により、相対
的に電圧のかからない部位が生じるところに電圧を与え
る機能を有し、また、補助ノズル（８）は無機質粉末の
沈降や堆積を防ぐと共に被電着体（５）の形状によって
はその近傍で流水抵抗の差により、無機質粉末と水分散
形ワニスの比率が崩れるが、これを防ぐ機能を有してい
る。The auxiliary electrode (7) has the function of applying voltage to areas where relatively no voltage is applied depending on the shape of the electrodeposited body (5), and the auxiliary nozzle (8) has the function of applying voltage to areas where no voltage is applied, depending on the shape of the electrodeposited body (5). Depending on the shape of the electrodeposited body (5), the ratio of the inorganic powder to the water-dispersed varnish may be disrupted due to a difference in water flow resistance in the vicinity, but this function is also prevented.
実施例１
水分散形ワニス（菱電化成株式会社製）１５重ユ部と軟
質マイカ鱗片、３５メツシュ篩通過のもの（岡部マイカ
株式会社製）８５重量部を電着液の固形分とし、この固
形分を１０重量部、イオン交換水（１ｘｌＯ’Ω／ＣＤ
Ｉ ） ９０重量部を電着液として第１図の電着槽（１
）内で電着液（４）を循環ポンプ（３ａ）で主ノズル（
２）より循環させ、また循環ポンプ（３ｂ）でマイカ燐
片の沈降を防ぎながら、ざらに被電着体（５）の平面部
や曲面部等の各部位の近傍に補助ノズル（８）により電
着液（４）を環流させて、電着（ＤＣ１７５Ｖｘ ９０
ｓｅｃ印加）を行い、軟質マイカ分８３〜８５重量部、
ワニス分１５〜１７重量部、絶縁皮膜厚さ５５０〜５９
０μｍの電着絶縁層を得た。この時の電着槽（１） と
被電着体（５）の距離は最大３００ｍｍ 、最小で２５
０）であった。さらに補助電極（７）と被電着体（５）
との距離は１５ｍｍであり、補助電極（７）の電圧は５
０Ｖに保持した。また、補助ノズル（８）と被電着体（
５）の距離はｌｏｏｍｍであり、ノズル（８）からの電
着液（４）の吐出量は０．５〜ＩＩｌ／ｍｉｎであった
。Example 1 The solid content of the electrodeposition solution was 15 parts by weight of water-dispersed varnish (manufactured by Ryoden Kasei Co., Ltd.), soft mica scales, and 85 parts by weight of a material that passed through a 35 mesh sieve (manufactured by Okabe Mica Co., Ltd.). 10 parts by weight of solids, ion-exchanged water (1xlO'Ω/CD
I) Using 90 parts by weight as the electrodeposition liquid, prepare the electrodeposition tank (1) in Figure 1.
) in the main nozzle (
2) While using the circulation pump (3b) to prevent the mica phosphorus particles from settling, the auxiliary nozzle (8) is used to roughly spray the electrodeposited material (5) near each part such as a flat part or a curved part. Circulate the electrodeposition liquid (4) and perform electrodeposition (DC175Vx 90
sec application), and the soft mica content was 83 to 85 parts by weight,
Varnish content: 15-17 parts by weight, insulation film thickness: 550-59%
An electrodeposited insulating layer of 0 μm was obtained. At this time, the distance between the electrodeposition tank (1) and the object to be electrodeposited (5) is 300 mm at the maximum, and 25 mm at the minimum.
0). Furthermore, the auxiliary electrode (7) and the electrodeposited body (5)
The distance between the two electrodes is 15 mm, and the voltage of the auxiliary electrode (7) is 5
It was held at 0V. In addition, the auxiliary nozzle (8) and the electrodeposited body (
The distance 5) was loomm, and the discharge rate of the electrodeposition liquid (4) from the nozzle (8) was 0.5 to IIl/min.
実施例２
電着電圧を１４０■、補助電極電圧をＯＶにして行った
以外は実施例１と同じ方法で電着絶縁皮膜を折出させて
軟質マイカ分６３〜６５重量部、絶縁皮膜厚さ４６５〜
５００μｍの電着絶縁層を得た。Example 2 An electrodeposited insulating film was deposited in the same manner as in Example 1 except that the electrodeposition voltage was 140 μ and the auxiliary electrode voltage was OV, and the soft mica content was 63 to 65 parts by weight and the insulation film thickness was 465～
An electrodeposited insulating layer of 500 μm was obtained.
比較実施例
実施例１と同じ電着液と被電着体を使用して電着を行い
、第３図の従来方法で電着絶縁層を得た。表１はこの発
明による実施例と従来法について電着絶縁の皮膜厚さと
、皮膜中のマイカ含有率の測定値である。この表からこ
の発明によれば無機質粉末を含有する電着液を、この液
組成に近い比率で被電着体に均一に電気折出させられる
ことが明らかである。Comparative Example Electrodeposition was carried out using the same electrodeposition liquid and the same electrodeposited object as in Example 1, and an electrodeposited insulating layer was obtained by the conventional method shown in FIG. Table 1 shows the measured values of the thickness of the electrodeposited insulation film and the mica content in the film for the embodiment according to the present invention and the conventional method. From this table, it is clear that according to the present invention, an electrodeposition liquid containing an inorganic powder can be uniformly electrodeposited onto an electrodeposited body at a ratio close to this liquid composition.
なお、表１の測定点は第２図に示した被電着体の（ａ）
〜（ｄ）の部分を示す。Note that the measurement points in Table 1 are (a) of the electrodeposited body shown in Figure 2.
-(d) is shown.
この発明の電着絶縁法において、補助電極（７）の長さ
を被電着体（５）のそれより長くすることがよく、これ
により、被電着体（５）への皮膜の形成を効果的に行う
ことができる。In the electrodeposition insulation method of the present invention, the length of the auxiliary electrode (7) is preferably made longer than that of the electrodeposited object (5), thereby preventing the formation of a film on the electrodeposited object (5). Can be done effectively.
また、補助室ＩＮ （７） と補助ノズル（８）とを分
離させておくことにより、補助電極（７）および補助ノ
ズル（８）の配置位置を自由に選定可能であり、作業性
が向上する。Furthermore, by separating the auxiliary chamber IN (7) and the auxiliary nozzle (8), the placement positions of the auxiliary electrode (7) and the auxiliary nozzle (8) can be freely selected, improving work efficiency. .
さらに、補助ノズル（８）は被電着体（５）の形状に応
じて１個若しくは複数個のものが自由な位置に設定でき
るようにすれば、形状や大きさの異なる被電着体であっ
ても電着むらもなく均一な皮膜が得られる。Furthermore, if one or more auxiliary nozzles (8) can be set at any position depending on the shape of the electrodeposited object (5), it is possible to use electrodeposited objects of different shapes and sizes. Even if there is no electrodeposition, a uniform film can be obtained without uneven electrodeposition.
以上説明したようにこの発明によれば、電着槽に補助電
極および補助ノズルを設け、補助電極に電圧を印加した
状態において補助ノズルより電着液を被電着体に向って
流すようにしたので、複雑な形状や大きさの異なる被電
着体に均一な絶縁皮膜を容易に形成することができる。As explained above, according to the present invention, an auxiliary electrode and an auxiliary nozzle are provided in the electrodeposition tank, and the electrodeposition liquid is caused to flow toward the electrodeposited object from the auxiliary nozzle while a voltage is applied to the auxiliary electrode. Therefore, a uniform insulating film can be easily formed on electrodeposited objects having complex shapes and different sizes.
第１図はこの発明の電着絶縁法を実施するための装置の
構成図、第２図は絶縁皮膜厚さと無機物含有率の測定点
を示す被電着体の斜視図、第３図は従来の電着絶縁装置
の構成図である。
（１）・・・電着槽、 （２）・・・主ノズル、（
３ａ）〜（３Ｃ）・・・循環ポンプ、（４）・・・電着
液、（５）・・・被電着体、 （７）・・・補助電極
、（８）・・・補助ノズル。
なお、図中、同一符号は同一または相当部分を示す。Figure 1 is a configuration diagram of an apparatus for carrying out the electrodeposited insulation method of the present invention, Figure 2 is a perspective view of an electrodeposited object showing measurement points for insulation film thickness and inorganic content, and Figure 3 is a conventional method. FIG. 2 is a configuration diagram of an electrodeposited insulation device. (1)...electrodeposition bath, (2)...main nozzle, (
3a) to (3C)...Circulation pump, (4)...Electrodeposition liquid, (5)...Electrodeposited object, (7)...Auxiliary electrode, (8)...Auxiliary nozzle . In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
液とし、電気泳動法により被電着体に電着層を平行かつ
均一な皮膜厚さに電気折出させるため、補助電極および
補助ノズルを設け、補助電極には任意の電圧を印加し、
補助ノズルより電着液を被電着体に沿って緩やかに、か
つ分布よく流して該電着体に電気折出層を形成させるこ
とを特徴とする電着絶縁法。An aqueous dispersion containing an inorganic powder and a water-dispersed varnish is used as an electrodeposition liquid, and an auxiliary electrode and an auxiliary electrode are used to electrodeposit the electrodeposited layer on the electrodeposited object to a parallel and uniform film thickness by electrophoresis. A nozzle is provided, an arbitrary voltage is applied to the auxiliary electrode,
An electrodeposition insulation method characterized by flowing an electrodeposition liquid slowly and with good distribution along an electrodeposited object from an auxiliary nozzle to form an electrically deposited layer on the electrodeposited object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8202588A JPH01255697A (en) | 1988-04-01 | 1988-04-01 | Method for insulating electrodeposition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8202588A JPH01255697A (en) | 1988-04-01 | 1988-04-01 | Method for insulating electrodeposition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01255697A true JPH01255697A (en) | 1989-10-12 |
Family
ID=13762988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8202588A Pending JPH01255697A (en) | 1988-04-01 | 1988-04-01 | Method for insulating electrodeposition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01255697A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19520458A1 (en) * | 1995-06-03 | 1996-12-05 | Forschungszentrum Juelich Gmbh | Device for the electrophoretic coating of substrates |
-
1988
- 1988-04-01 JP JP8202588A patent/JPH01255697A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19520458A1 (en) * | 1995-06-03 | 1996-12-05 | Forschungszentrum Juelich Gmbh | Device for the electrophoretic coating of substrates |
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