JPH0433873B2 - - Google Patents
Info
- Publication number
- JPH0433873B2 JPH0433873B2 JP24965188A JP24965188A JPH0433873B2 JP H0433873 B2 JPH0433873 B2 JP H0433873B2 JP 24965188 A JP24965188 A JP 24965188A JP 24965188 A JP24965188 A JP 24965188A JP H0433873 B2 JPH0433873 B2 JP H0433873B2
- Authority
- JP
- Japan
- Prior art keywords
- electrodeposition
- electrode
- paint
- bottom electrode
- coated
- 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
- 238000004070 electrodeposition Methods 0.000 claims description 99
- 239000003973 paint Substances 0.000 claims description 41
- 239000011248 coating agent Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 15
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 125000002091 cationic group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
- Coating Apparatus (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電着装置に関する。さらに詳しくは、
電着槽内の電着塗料中を移動せしめられる被塗装
物と、該電着塗料中に設けられた電極とのあいだ
に電圧を印加して電着塗装を行なう電着装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrodeposition apparatus. For more details,
The present invention relates to an electrodeposition apparatus that performs electrodeposition coating by applying a voltage between an object to be coated that is moved through an electrodeposition paint in an electrodeposition tank and an electrode provided in the electrodeposition paint.
電着塗装は、たとえば自動車ボデーの塗装など
に広く適用されている（たとえば特開昭61−
163297号公報参照）。前記電着塗装を行なう電着
装置としては、たとえば第３図に示されるような
装置がある。第３図において、電着槽５１には電
着塗料５２が収容され、電着塗料５２中には塗料
の付きまわりを向上させるために、主電極である
側部電極（図示されていない）に加えて補助電極
としての底部電極（底裏電極ともいう）５３と上
部電極（ルーフ電極ともいう）５４とが互いに対
向するように設けられている。電着槽５１の上方
にはコンベヤ５５が配置され、コンベヤ５５には
山状の隆起部５６が形成されている。コンベヤ５
５は電着塗料５２中を移動せしめられる被塗装物
５７を支持するものであり、前記隆起部５６は支
持された被塗装物５７を強制的に傾斜せしめるこ
とによつて被塗装物５７内に存在しうる空気など
を抜くために設けられている。
Electrodeposition coating is widely applied, for example, to the painting of automobile bodies (for example, in Japanese Patent Application Laid-Open No. 1986-
(See Publication No. 163297). As an electrodeposition apparatus for performing the electrodeposition coating, there is an apparatus as shown in FIG. 3, for example. In FIG. 3, an electrodeposition paint 52 is stored in an electrodeposition tank 51, and in order to improve coating coverage, a side electrode (not shown), which is a main electrode, is placed in the electrodeposition paint 52. In addition, a bottom electrode (also referred to as a bottom back electrode) 53 and an upper electrode (also referred to as a roof electrode) 54 as auxiliary electrodes are provided to face each other. A conveyor 55 is arranged above the electrodeposition tank 51, and a mountain-shaped raised portion 56 is formed on the conveyor 55. conveyor 5
Reference numeral 5 supports the object to be coated 57 that is moved through the electrodeposition paint 52, and the raised portion 56 forcibly tilts the supported object to be coated 57 so that the object to be coated 57 is moved into the object to be coated 57. It is provided to remove any air that might be present.
かかる装置による電着塗装は、被塗装物５７
と、底部電極５３および上部電極５４とのあいだ
に電圧が印加された状態で、被塗装物５７が電着
塗料５２内を移動せしめられることによつて行な
われる。なお、電着塗料５２は、図示されていな
い循環ポンプ、限外過装置などを通して循環さ
れ、一定な塗装条件を維持するために塗料の補給
やイオン濃度の調整などが行なわれる。 Electrodeposition coating using such a device is performed on the object to be coated 57.
This is done by moving the object 57 within the electrodeposition paint 52 while a voltage is applied between the bottom electrode 53 and the top electrode 54. The electrodeposition paint 52 is circulated through a circulation pump, an ultrafiltration device, etc. (not shown), and the paint is replenished and the ion concentration is adjusted to maintain constant coating conditions.
第３図に示される電着装置においては、底部電
極５３と上部電極５４とが互いに対向するように
配置されているので、電着塗料５２の深さとして
は、電着槽５１の底板から底部電極５３上面まで
の距離と、底部電極５３上面と被塗装物５７下面
とのあいだの所要間隔と、被塗装物５７の高さ
と、被塗装物５７上面と上部電極５４下面との所
要間隔と、電着塗料５２液面から上部電極５４下
面までの距離とを合計した深さが最小限必要にな
る。したがつて、このような従来の装置において
は、前記条件を満足するような電着塗料５２の深
さが選択される。
In the electrodeposition apparatus shown in FIG. 3, the bottom electrode 53 and the top electrode 54 are arranged to face each other, so the depth of the electrodeposition paint 52 is determined from the bottom plate of the electrodeposition bath 51 to the bottom. The distance to the top surface of the electrode 53, the required distance between the top surface of the bottom electrode 53 and the bottom surface of the object to be painted 57, the height of the object to be painted 57, the required distance between the top surface of the object to be painted 57 and the bottom surface of the top electrode 54, The minimum required depth is the sum of the distance from the liquid level of the electrodeposition paint 52 to the lower surface of the upper electrode 54. Therefore, in such a conventional device, the depth of the electrodeposition paint 52 is selected so as to satisfy the above conditions.
そのため、電着槽５１の深さが深く、その容積
が大きくなるため、設備コストが高いという問題
点や、電着塗料５２の液量が多いため、ターンオ
ーバーの向上による塗装品質の向上に限界がある
という問題点や、循環ポンプの容量が大きくなつ
て、設備コストのみならず運転コストも高くなる
という問題点などがある。 Therefore, the depth of the electrodeposition tank 51 is deep and its volume is large, which causes problems such as high equipment costs, and the large amount of liquid of the electrodeposition paint 52 limits the ability to improve coating quality by improving turnover. The problem is that the capacity of the circulation pump increases, which increases not only the equipment cost but also the operating cost.
本発明は、前記従来の電着装置における問題点
に鑑みてなされたものであり、底部電極と上部電
極とを有する構成でありながら、電着槽の長さや
幅を増大させることなく電着塗料の深さを減少さ
せることを可能にし、それによつて電着槽容量や
電着塗料の液量および循環ポンプの容量が減少
し、設備コストおよび運転コストの削減ならびに
塗装品質の向上が一度に達成される電着装置を提
供することを目的とする。 The present invention has been made in view of the problems with the conventional electrodeposition apparatus, and although it has a bottom electrode and an upper electrode, it is possible to use electrodeposition paint without increasing the length or width of the electrodeposition tank. This makes it possible to reduce the depth of the electrocoat tank, thereby reducing the volume of the electrocoat bath, the volume of electrocoat liquid, and the capacity of the circulation pump, thereby simultaneously reducing equipment and operating costs and improving coating quality. The purpose of the present invention is to provide an electrodeposition device that can be used.
本発明は電着塗料を収容している電着槽と、電
着槽内の電着塗料中に設けられた主電極としての
側部電極と補助電極としての底部電極および上部
電極と、電着槽の上方に配置され、被塗装物を支
持し該電着塗料中を移動せしめるコンベヤとから
なり、前記底部電極と上部電極とが互いに対向し
ないようにずらされて配置され、前記コンベヤの
底部電極と対向する位置に水平な頂上部分を有す
る隆起部が形成されてなる電着装置に関する。
The present invention relates to an electrodeposition tank containing an electrodeposition paint, a side electrode as a main electrode, a bottom electrode and an upper electrode as auxiliary electrodes provided in the electrodeposition paint in the electrodeposition tank, and an electrodeposition tank containing an electrodeposition paint. a conveyor disposed above the tank to support the object to be coated and move it through the electrodeposition paint; the bottom electrode and the top electrode are arranged offset so as not to face each other; The present invention relates to an electrodeposition device in which a raised portion having a horizontal top portion is formed at a position facing the electrodeposition device.
本発明の電着装置は、底部電極と上部電極とが
互いに対向しないようにずらされて配置されてい
るので、電着塗料の深さは、電着槽の底部から底
部電極上面までの距離と、底部電極上面と被塗装
物下面とのあいだの所要間隔と、被塗装物の高さ
と、被塗装物上面から電着塗料液面までの所要距
離との合計深さ、または、電着槽の底板から被塗
装物下面までの所要距離と、被塗装物高さと、被
塗装物上面と上部電極下面とのあいだの所要距離
と、電着塗料液面から上部電極下面までの距離と
の合計深さのいずれか大きい方に基づいて決定す
ることができ、前記従来の電着装置における電着
塗料深さよりも減少させることができる。
In the electrodeposition device of the present invention, the bottom electrode and the top electrode are staggered so that they do not face each other, so the depth of the electrodeposition paint is determined by the distance from the bottom of the electrodeposition bath to the top surface of the bottom electrode. , the total depth of the required distance between the top surface of the bottom electrode and the bottom surface of the object to be coated, the height of the object to be coated, and the required distance from the top surface of the object to be coated to the electrocoat liquid level, or the depth of the electrodeposition tank. The total depth of the required distance from the bottom plate to the bottom surface of the object to be coated, the height of the object to be coated, the required distance between the top surface of the object to be coated and the bottom surface of the upper electrode, and the distance from the electrodeposition paint liquid level to the bottom surface of the top electrode. The depth of the electrodeposited paint can be determined based on whichever is greater, and the depth of the electrodeposited paint can be reduced from the depth of the electrodeposited paint in the conventional electrodeposition apparatus.
また、コンベヤの底部電極と対向する位置に水
平な頂上部分を有する隆起部が形成されているた
め、底部電極の上方を通過するときの被塗装物の
支持高さが上部電極の下方を通過するときよりも
高くなり前述のごとく従来の電着槽よりも浅い電
着槽の採用を可能にするばかりでなく、被塗装物
が頂上部分の両側に形成される傾斜部に支持され
ているときにも有効に電着が行なわれるため底部
電極からの電着における有効に工程長が底部電極
の長さに比して長くなり、電着槽の長さや幅を大
きくすることなく、前述のごとき電極配置で所定
の電着工程を達成することができる。 In addition, since a raised portion with a horizontal top portion is formed at a position facing the bottom electrode of the conveyor, the support height of the object to be coated when passing above the bottom electrode is lower than the top electrode. As mentioned above, it not only makes it possible to use a shallower electrodeposition bath than the conventional electrodeposition bath, but also allows the coating to be used when the object to be coated is supported on the slopes formed on both sides of the top portion. Since electrodeposition is performed effectively in the electrodeposition process from the bottom electrode, the process length for electrodeposition from the bottom electrode becomes longer than the length of the bottom electrode. With this arrangement, a predetermined electrodeposition process can be achieved.
つぎに、本発明の電着装置を図面に基づいて説
明する。
Next, the electrodeposition apparatus of the present invention will be explained based on the drawings.
第１図は本発明の電着装置の一例を示す概略説
明図、第２図は本発明の電着装置の一実施例を示
す断面図である。 FIG. 1 is a schematic explanatory diagram showing an example of the electrodeposition apparatus of the present invention, and FIG. 2 is a sectional view showing one embodiment of the electrodeposition apparatus of the present invention.
第１図において、電着槽１には電着塗料２が収
容され、電着塗料２中には塗料の付きまわりを向
上させるために、主電極である側部電極（図示さ
れていない）に加えて補助電極としての底部電極
３と上部電極４とが設けられている。前記底部電
極３と上部電極４とは互いに対向しないように電
着槽１の長さ方向にずらされて配置されている。
電着槽１の上方には自動車ボデーなどの被塗装物
７を支持するコンベヤ５が配置されており、前記
コンベヤ５の底部電極３と対向する位置には、水
平な頂上部分８を有する隆起部６が形成されてい
る。 In FIG. 1, an electrodeposition paint 2 is stored in an electrodeposition tank 1, and a side electrode (not shown), which is a main electrode, is placed inside the electrodeposition paint 2 to improve coating coverage. In addition, a bottom electrode 3 and a top electrode 4 are provided as auxiliary electrodes. The bottom electrode 3 and the top electrode 4 are arranged offset in the length direction of the electrodeposition bath 1 so as not to face each other.
A conveyor 5 that supports an object 7 to be coated such as an automobile body is arranged above the electrodeposition tank 1, and a raised portion having a horizontal top portion 8 is disposed at a position facing the bottom electrode 3 of the conveyor 5. 6 is formed.
上記電着塗料２としてはカチオン型の電着塗料
であつてもアニオン型の電着塗料であつてもよ
く、それらをとくに限定なく用いることができ
る。 The electrodeposition paint 2 may be a cationic electrodeposition paint or an anionic electrodeposition paint, and they can be used without particular limitation.
また、前記電着槽１や電極３，４の材料にもと
くに限定はなく、従来より電着装置に採用されて
いる材料を用いることができる。 Furthermore, there are no particular limitations on the materials for the electrodeposition tank 1 and the electrodes 3 and 4, and materials conventionally employed in electrodeposition apparatuses can be used.
かかる構成を採用することにより、被塗装物７
の支持高さは上部電極４の下方では底部電極３の
上方よりも低くなり、従来の電着装置に比べ上部
電極４の設置高さが低くなり、電着塗料２の液面
が低くなつている。また、隆起部６が水平な頂上
部分８とその両側の傾斜部分９，１０とからなつ
ており、コンベヤが底部電極３と対向する頂上部
分８を移動しているときのみならず、その両側の
傾斜部分を移動しているときも、そこから支持さ
れている被塗装物７には底部電極３によつて有効
に電着塗装が施されるので、底部電極３の長さに
比して有効な工程長が長くなり、電着槽１の長さ
をきわめて効率的に利用しうる構造となつてい
る。 By adopting such a configuration, the object to be painted 7
The support height is lower below the upper electrode 4 than above the bottom electrode 3, and the installation height of the upper electrode 4 is lower than in conventional electrodeposition equipment, and the liquid level of the electrodeposition paint 2 is lowered. There is. Further, the raised portion 6 is composed of a horizontal top portion 8 and sloped portions 9 and 10 on both sides thereof, and not only when the conveyor is moving on the top portion 8 facing the bottom electrode 3, but also on both sides thereof. Even when moving on a slope, the bottom electrode 3 effectively applies electrodeposition coating to the object 7 supported from there, which is effective compared to the length of the bottom electrode 3. Therefore, the length of the electrodeposition bath 1 can be used extremely efficiently.
第２図は、自動車ボデーの電着塗装に適用され
た本発明の電着装置の一例を示している。 FIG. 2 shows an example of an electrodeposition apparatus of the present invention applied to electrodeposition coating of an automobile body.
電着塗料２が入れられた電着槽１の上方にはコ
ンベヤ５が配置され、被塗装物７である自動車ボ
デーはコンベヤ５から支持されて図中左から右に
向かつて移動している。電着塗料２中には、たと
えばイオン交換膜でステンレス性電極を囲んだ円
筒型隔膜付き電極からなる底部電極３、上部電極
４、側部電極１１および１２が配置されている。
なお側部電極１１および１２の間にも側部電極が
あるが、図示されていない。コンベヤ５の底部電
極３と対向する位置には、水平な頂上部分８とそ
の両側の傾斜部分９および１０とからなる隆起部
６が形成されている。 A conveyor 5 is arranged above the electrodeposition tank 1 containing the electrodeposition paint 2, and an object 7 to be painted, an automobile body, is supported by the conveyor 5 and is moving from left to right in the figure. Arranged in the electrodeposition paint 2 are a bottom electrode 3, an upper electrode 4, and side electrodes 11 and 12, each consisting of, for example, a cylindrical diaphragm electrode in which a stainless steel electrode is surrounded by an ion exchange membrane.
Note that there is also a side electrode between side electrodes 11 and 12, but it is not shown. A raised portion 6 consisting of a horizontal top portion 8 and sloped portions 9 and 10 on both sides thereof is formed at a position facing the bottom electrode 3 of the conveyor 5.
電着塗料２の液面高さａは約2200mmであり、そ
の中を高さｂが約1200mmの自動車ボデーが被塗装
物７として移動せしめられている。上部電極４の
下方における被塗装物７の下面と電着槽１の底板
との距離ｃは約500mmである。底部電極３の上方
におけるコンベヤ５の隆起部６の高さｄは約300
mmであり、したがつて被塗装物７は前記支持高さ
よりも約300mm高い支持高さで支持される。隆起
部６の傾斜部分９、頂上部分８および傾斜部分１
０の水平距離ｅ、ｆおよびｇはいずれも約2000mm
であり、電着槽１の長さ方向の寸法ｈ、ｉおよび
ｊはそれぞれ約7500mm、約20350mmおよび4000mm
である。 The liquid surface height a of the electrodeposition paint 2 is approximately 2200 mm, and an automobile body having a height b of approximately 1200 mm is moved therein as the object 7 to be coated. The distance c between the lower surface of the object to be coated 7 below the upper electrode 4 and the bottom plate of the electrodeposition tank 1 is about 500 mm. The height d of the raised portion 6 of the conveyor 5 above the bottom electrode 3 is approximately 300
mm, and therefore the object to be coated 7 is supported at a support height approximately 300 mm higher than the above-mentioned support height. Slope portion 9, top portion 8 and slope portion 1 of raised portion 6
0 horizontal distance e, f and g are all approximately 2000mm
The lengthwise dimensions h, i, and j of the electrodeposition tank 1 are approximately 7500 mm, approximately 20350 mm, and 4000 mm, respectively.
It is.
かかる電着装置において、電着塗料２としてカ
チオン電着塗料El9600ライトグレー（関西ペイン
ト(株)製）を用い、被塗装物７たる自動車ボデーの
移動速度を2.042〜5.673ｍ／分とし、電極と自動
車ボデーとのあいだに280〜320Vの電圧を印加
し、通常の方法で一定な塗装条件を維持すること
により、自動車ボデーの良好な電着塗装を行なう
ことができた。 In this electrodeposition apparatus, cationic electrodeposition paint El9600 Light Gray (manufactured by Kansai Paint Co., Ltd.) is used as the electrodeposition paint 2, the moving speed of the automobile body, which is the object 7 to be coated, is set at 2.042 to 5.673 m/min, and the electrode and By applying a voltage of 280 to 320 V to the car body and maintaining constant coating conditions using the usual method, it was possible to perform good electrodeposition coating on the car body.
第２図に示された実施例のばあには、従来の底
部電極と上部電極とを対向させ配置した装置に比
べて、電着槽の長さや幅の寸法を変えずに電着塗
料の液面を約300mm低くできる。したがつてそれ
に伴なつて電着槽の深さを小さくでき、また、電
着塗料の液量も減少しうる。さらに電着塗料の循
環ポンプの容量も従来の配置による装置に比べて
約10％小さくできる。 In the case of the embodiment shown in FIG. 2, compared to the conventional device in which the bottom electrode and the top electrode are arranged facing each other, the electrodeposition paint can be applied without changing the length and width dimensions of the electrodeposition tank. The liquid level can be lowered by approximately 300mm. Accordingly, the depth of the electrodeposition tank can be reduced, and the amount of electrodeposition paint can also be reduced. Furthermore, the capacity of the electrocoating paint circulation pump can be reduced by approximately 10% compared to equipment with conventional arrangement.
本発明の電着装置においては、従来の電着槽の
長さ（主電極である側部電極の配置長さによつて
ほぼ決まる）の範囲内で底部電極と上部電極とを
ずらして配置しているので、底部電極と上部電極
とを有し付きまわりを向上せしめる構成を採用し
ながら、電着槽の長さや幅を増大させることなく
電着塗料の深さを減少させることを可能にし、そ
れによる電着槽容量の減少によつて設備コストが
削減され、ターンオーバーの向上によつて塗装品
質が向上せしめられ、循環ポンプ容量の減少によ
つて運転が削減されるという効果を奏する。
In the electrodeposition apparatus of the present invention, the bottom electrode and the top electrode are arranged offset within the length of the conventional electrodeposition tank (approximately determined by the arrangement length of the side electrode, which is the main electrode). This makes it possible to reduce the depth of the electrodeposition paint without increasing the length or width of the electrodeposition tank, while adopting a configuration that has a bottom electrode and an upper electrode and improves coverage. As a result, equipment costs are reduced by reducing the capacity of the electrodeposition tank, coating quality is improved by improving turnover, and operation is reduced by reducing the capacity of the circulation pump.
第１図は本発明の電着装置の一例を示す概略説
明図、第２図は本発明の電着装置の一実施例を示
す断面図、第３図は従来の電着装置の一例を示す
概略図である。
（図面の主要符号）１：電着槽、２：電着塗
料、３：底部電極、４：上部電極、５：コンベ
ヤ、６：隆起部、８：頂上部分。
FIG. 1 is a schematic explanatory diagram showing an example of the electrodeposition apparatus of the present invention, FIG. 2 is a sectional view showing an embodiment of the electrodeposition apparatus of the present invention, and FIG. 3 is an example of a conventional electrodeposition apparatus. It is a schematic diagram. (Main symbols in the drawing) 1: Electrodeposition tank, 2: Electrodeposition paint, 3: Bottom electrode, 4: Top electrode, 5: Conveyor, 6: Protrusion, 8: Top portion.
Claims (1)
の電着塗料中に設けられた主電極としての側部電
極と補助電極としての底部電極および上部電極
と、電着槽の上方に配置され、被塗装物を支持し
該電着塗料中を移動せしめるコンベヤとからな
り、前記底部電極と上部電極とが互いに対向しな
いようにずらされて配置され、前記コンベヤの底
部電極と対向する位置に水平な頂上部分を有する
隆起部が形成されてなる電着装置。1 An electrodeposition tank containing an electrodeposition paint, a side electrode as a main electrode, a bottom electrode and an upper electrode as auxiliary electrodes provided in the electrodeposition paint in the electrodeposition tank, and a conveyor disposed above to support the object to be coated and move it through the electrodeposited paint, and the bottom electrode and the top electrode are arranged offset so that they do not face each other, and are opposed to the bottom electrode of the conveyor. An electrodeposition device in which a raised portion having a horizontal top portion is formed at a position where the electrodeposition device is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24965188A JPH0297699A (en) | 1988-10-03 | 1988-10-03 | Electrodeposition equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24965188A JPH0297699A (en) | 1988-10-03 | 1988-10-03 | Electrodeposition equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0297699A JPH0297699A (en) | 1990-04-10 |
| JPH0433873B2 true JPH0433873B2 (en) | 1992-06-04 |
Family
ID=17196192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24965188A Granted JPH0297699A (en) | 1988-10-03 | 1988-10-03 | Electrodeposition equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0297699A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007309809A (en) * | 2006-05-19 | 2007-11-29 | Nec Saitama Ltd | Cellular phone terminal and its control method |
-
1988
- 1988-10-03 JP JP24965188A patent/JPH0297699A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0297699A (en) | 1990-04-10 |
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