JPH07214Y2 - Immersion coating device - Google Patents
Immersion coating deviceInfo
- Publication number
- JPH07214Y2 JPH07214Y2 JP13506788U JP13506788U JPH07214Y2 JP H07214 Y2 JPH07214 Y2 JP H07214Y2 JP 13506788 U JP13506788 U JP 13506788U JP 13506788 U JP13506788 U JP 13506788U JP H07214 Y2 JPH07214 Y2 JP H07214Y2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- coating liquid
- tank
- liquid recovery
- recovery tank
- 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 - Lifetime
Links
Landscapes
- Coating Apparatus (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、被塗布物を塗布液中に浸漬し、次いで引き上
げて塗布を行う浸漬塗布装置に関し、特に塗布液を循環
して使用するに際し、循環によるトラブルを最小限に抑
える浸漬塗布装置に関する。TECHNICAL FIELD The present invention relates to a dip coating device in which an object to be coated is dipped in a coating liquid and then pulled up to perform coating, and particularly when the coating liquid is circulated and used, The present invention relates to a dip coating device that minimizes troubles caused by.
従来の技術 従来より、筒体等の被塗布物に塗布液を塗布する装置は
種々知られているが、特に塗膜の平滑性を重視する場合
には、浸漬塗布装置が使用されている。2. Description of the Related Art Conventionally, various devices for coating a coating liquid on an object to be coated such as a cylinder have been known, but a dip coating device is used particularly when importance is attached to the smoothness of a coating film.
一般的に、浸漬塗布装置では、被塗布物を塗布液中に浸
漬し、次に適度は速度でこれを引き上げて塗布を行う。
この場合、例えば、実開昭59−90667号公報に記載され
ているように、塗布槽とは別に塗布液回収のための塗布
槽を設けて、塗布液を連続的に循環させることが好まし
くは、それにより塗布槽の液面変動の防止、塗布液組成
の均一化、塗布槽上の塗布液表面の汚れ防止等の目的に
有効である。Generally, in a dip coating device, an object to be coated is dipped in a coating liquid, and then pulled up at an appropriate speed to perform coating.
In this case, for example, as described in Japanese Utility Model Laid-Open No. 59-90667, it is preferable to provide a coating tank for collecting the coating solution separately from the coating tank and continuously circulate the coating solution. Therefore, it is effective for the purpose of preventing the fluctuation of the liquid level in the coating tank, making the composition of the coating liquid uniform, and preventing the surface of the coating liquid on the coating tank from becoming dirty.
また、塗布液を回収する際に、塗布層内の塗布液中に泡
が生じないようにするために、塗布液が落下する位置に
障壁を配設することも知られている。（実開昭60−1079
52号公報） 第２図は、従来の浸漬塗布装置の概略構成図であって、
被塗布物２は、塗布槽３内の塗布液６に浸漬されて塗布
される。被塗布物はモーター１とボールねじ９により上
下に移動するように支持されている。また、塗布液はポ
ンプ７と配管13により、塗布槽３に供給され、案内管４
を通って塗布液回収タンク５に戻る。It is also known to dispose a barrier at the position where the coating liquid falls so that bubbles do not occur in the coating liquid in the coating layer when the coating liquid is collected. (Actual development 60-1079
No. 52) FIG. 2 is a schematic configuration diagram of a conventional dip coating apparatus,
The article 2 to be coated is dipped in the coating liquid 6 in the coating tank 3 to be coated. The object to be coated is supported by the motor 1 and the ball screw 9 so as to move up and down. The coating liquid is supplied to the coating tank 3 by the pump 7 and the pipe 13, and the guide pipe 4
And returns to the coating liquid recovery tank 5.
考案が解決しようとする課題 ところが、第２図に示されるような従来の浸漬塗布装置
においては、塗布液が案内管４から塗布液回収タンク５
に入る際に、案内管４の塗布液出口が塗布液回収タンク
の上部に位置するために落流して塗布液中に泡11が発生
するという問題があった。塗布液に泡が混入すると、そ
もまま消えずに循環され、形成される塗膜にはじき、だ
れ、泡、浮き等の欠陥が生じる原因となる。The problem to be solved by the invention is, however, that in the conventional dip coating apparatus as shown in FIG.
When entering, there was a problem that the outlet of the coating liquid of the guide tube 4 was located at the upper part of the coating liquid recovery tank and dropped, and bubbles 11 were generated in the coating liquid. When bubbles are mixed in the coating solution, they are circulated without disappearing as they are, which causes defects such as repelling, dripping, bubbles, and floating in the formed coating film.
また、第３図に示されるように、案内管４を塗布液回収
タンク５の下部まで延長し、先端を塗布液６中で開口さ
せた場合にも、流れの勢いが弱められずに流れ込むた
め、塗布液が巻き込まれて泡11が生じ、塗布液中に泡が
混入するという問題は完全には解消することができなか
った。Further, as shown in FIG. 3, even when the guide tube 4 is extended to the lower portion of the coating liquid recovery tank 5 and the tip is opened in the coating liquid 6, the flow force flows without being weakened. However, the problem that the coating liquid is caught and bubbles 11 are generated and the bubbles are mixed in the coating liquid cannot be completely solved.
一方、実開昭60−107952号公報に記載のように、塗布液
が落流する位置に障壁を配設した場合には、落流の勢い
が弱まり、泡の混入にかなり有効であるが、障壁から再
び落流が起き、塗布液の粘度が低い場合には、泡発生防
止機能が充分とはいえなかった。On the other hand, as described in Japanese Utility Model Laid-Open No. 60-107952, when a barrier is arranged at a position where the coating liquid flows down, the force of the flow is weakened, and it is quite effective in mixing bubbles, When the flow again occurred from the barrier and the viscosity of the coating solution was low, the function of preventing foam formation was not sufficient.
本考案は、従来の技術における上記のような問題点に鑑
みてなされたものである。したがって、本考案の目的
は、塗布槽から塗布液を回収する際に、泡の発生を防止
できる浸漬塗布装置を提供することにある。The present invention has been made in view of the above problems in the conventional technology. Therefore, an object of the present invention is to provide a dip coating device capable of preventing the generation of bubbles when collecting the coating liquid from the coating tank.
課題を解決するための手段 本考案の浸漬塗布装置は、塗布液を保持する塗布槽と、
被塗布物を上下方向に移動して塗布槽内に挿入可能に支
持する被塗布物支持手段と、塗布槽から回収された塗布
液を保持し、塗布槽に再供給するための塗布液回収タン
クと、塗布槽から塗布液回収タンクに塗布液を導入する
ための塗布液回収部材を具備するものであって、その塗
布液回収部材が、塗布槽上端から溢流する塗布液を受け
るための樋と、該樋と連通し、塗布液回収タンク内で開
口する案内管とよりなり、そしてその案内管の先端部分
は、塗布液回収タンク内において下方に向かってらせん
状に傾斜し、かつ、先端が塗布液回収タンク内の塗布液
中で開口するように設けられてなることを特徴とする。Means for Solving the Problems The dip coating device of the present invention comprises a coating tank for holding a coating liquid,
A coating liquid recovery tank for holding the coating liquid collected from the coating tank and re-supplying it to the coating tank And a coating liquid collecting member for introducing the coating liquid from the coating tank to the coating liquid collecting tank, wherein the coating liquid collecting member receives the coating liquid overflowing from the upper end of the coating tank. And a guide tube communicating with the gutter and opening in the coating liquid recovery tank, and the tip portion of the guide tube is inclined downward in the coating liquid recovery tank in a spiral shape, and the tip is Is provided so as to open in the coating liquid in the coating liquid recovery tank.
作用 本考案の浸漬塗布槽においては、塗布槽から溢流する塗
布液が、塗布液回収部材を構成する樋及び案内管を経由
して塗布液回収タンクに回収される際に、案内管の先端
部分がらせん状になって下方に向かって緩やかに傾斜し
ているため、案内管を流れる塗布液の流れの勢いが弱め
られる。さらに、案内管の先端が塗布液中で開口するた
め、流れの勢いが弱められた塗布液は、ゆるやかに塗布
液回収タンク内の塗布液に流れ込む。したがって、塗布
液回収タンク内のおいて、塗布液中に泡が発生すること
がなくなる。In the dip coating tank of the present invention, when the coating liquid overflowing from the coating tank is collected in the coating liquid recovery tank via the gutter and the guide pipe which constitute the coating liquid recovery member, the tip of the guide pipe is Since the part has a spiral shape and is gently inclined downward, the force of the flow of the coating liquid flowing through the guide tube is weakened. Furthermore, since the tip of the guide tube opens in the coating liquid, the coating liquid whose flow is weakened slowly flows into the coating liquid in the coating liquid recovery tank. Therefore, no bubbles are generated in the coating liquid in the coating liquid recovery tank.
実施例 以下、本考案の実施例を図面によって説明する。第１図
は、本考案の浸漬塗布装置の概略の構成を示す図であ
る。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of the dip coating device of the present invention.
図中、３は円筒状の塗布槽であり、塗布液６が満たされ
ている。被塗布物支持手段は、支持部材10とボールねじ
９より構成され、円筒状の被塗布物２を、上下方向に移
動して塗布槽内の塗布液中に浸漬可能に支持している。
塗布槽の上端周囲には、溢流する塗布液を受けるための
樋12が設けられ、その樋に連通して案内管４が設けられ
ていて、塗布液回収部材を構成している。案内管４は、
その先端部分がらせん管８となっており、その先端は、
塗布液回収タンク５内に回収された塗布液中で開口する
ように、塗布液回収タンク内に配設されている。塗布液
回収タンク５の下部には塗布液を塗布槽に返送するため
の導管13が配設され、塗布槽下部に連通している。な
お、１はボールねじを回転するためのモーターであり、
７は塗布液を循環させるためのポンプである。In the figure, 3 is a cylindrical coating tank, which is filled with the coating liquid 6. The object support means comprises a support member 10 and a ball screw 9, and vertically supports the cylindrical object 2 so that it can be dipped in the coating solution in the coating tank.
A gutter 12 for receiving the overflowing coating liquid is provided around the upper end of the coating tank, and a guide tube 4 is provided in communication with the gutter to form a coating liquid collecting member. The guide tube 4 is
The tip portion is a spiral tube 8, and the tip is
It is arranged in the coating liquid recovery tank 5 so as to open in the coating liquid recovered in the coating liquid recovery tank 5. A conduit 13 for returning the coating liquid to the coating tank is arranged below the coating liquid recovery tank 5 and communicates with the lower portion of the coating tank. In addition, 1 is a motor for rotating the ball screw,
7 is a pump for circulating the coating liquid.
上記浸漬塗布装置において、モーター１を駆動してボー
ルねじ９を回転させることにより、支持部材10に支持さ
れている被塗布物２が、塗布槽上方から下降し、塗布槽
２内の塗布液中に浸漬される。次いで、被塗布物を所定
の速度で引き上げることにより塗布が行われる。一方、
塗布液６は、ポンプ７によって塗布槽下部に供給され、
塗布槽上端から溢流する。溢流した塗布液は樋12で受け
られ、案内管４を通って先端部分に形成されたらせん管
８の先端から、塗布液回収タンク内の塗布液中に還流さ
れる。この場合、溢流した塗布液は、らせん管８を通っ
て塗布液回収タンク内の塗布液中に流入するので、らせ
ん管内で流れの勢いが弱まり、塗布液中に泡を発生させ
ることなく回収される。In the above dip coating apparatus, by driving the motor 1 to rotate the ball screw 9, the article to be coated 2 supported by the supporting member 10 descends from above the coating tank, and the coating liquid in the coating tank 2 Be immersed in. Next, application is performed by pulling up the object to be coated at a predetermined speed. on the other hand,
The coating liquid 6 is supplied to the lower portion of the coating tank by the pump 7,
Overflow from the top of the coating tank. The overflowing coating solution is received by the trough 12, and is returned to the coating solution in the coating solution recovery tank from the tip of the spiral tube 8 formed at the tip portion through the guide tube 4. In this case, the overflowed coating liquid flows into the coating liquid in the coating liquid recovery tank through the spiral pipe 8, so that the force of the flow is weakened in the spiral pipe and the coating liquid is collected without generating bubbles. To be done.
考案の効果 本考案の浸漬塗布装置は、上記のように、案内管の先端
部分が、塗布液回収タンク内において下方に向かってら
せん状に傾斜し、かつ、先端が塗布液回収タンク内の塗
布液中で開口するように設けられているから、塗布液が
回収される際に、泡を発生することがなくなり、したが
って、従来の技術のように、生じた泡が、塗布槽内に循
環して塗膜欠陥を引き起こすという問題がなくなる。し
たがって、本考案の浸漬塗布装置によれば、塗膜欠陥の
ない平滑な塗膜を形成することが可能になるので、例え
ば、電子写真感光体を構成する各層の形成に特に有利に
使用することができる。Effect of the Invention As described above, in the dip coating device of the present invention, the tip portion of the guide tube is spirally inclined downward in the coating liquid recovery tank, and the tip is coated in the coating liquid recovery tank. Since it is provided so as to be opened in the liquid, bubbles are not generated when the coating liquid is collected, and thus the generated bubbles circulate in the coating tank as in the conventional technique. The problem of causing coating film defects is eliminated. Therefore, according to the dip coating apparatus of the present invention, it is possible to form a smooth coating film without coating film defects. Therefore, it can be used particularly advantageously for forming each layer constituting an electrophotographic photoreceptor, for example. You can
第１図は本考案の浸漬塗布装置の概略の構成を説明する
部分断面図、第２図は従来の浸漬塗布装置の概略の構成
を示す部分断面図、第３図は比較のための塗布液回収タ
ンクの断面図を示す。 １……モーター、２……被塗布物、３……塗布槽、４…
…案内管、５……塗布液回収タンク、６……塗布液、７
……ポンプ、８……らせん管、９……ボールねじ、10…
…支持部材、11……泡、12……樋、13……導管。FIG. 1 is a partial cross-sectional view for explaining the schematic structure of the dip coating device of the present invention, FIG. 2 is a partial cross-sectional view for showing the schematic structure of a conventional dip coating device, and FIG. 3 is a coating solution for comparison. A sectional view of a recovery tank is shown. 1 ... Motor, 2 ... Object to be coated, 3 ... Coating tank, 4 ...
… Guide tube, 5 …… Coating liquid recovery tank, 6 …… Coating liquid, 7
…… Pump, 8 …… Helix tube, 9 …… Ball screw, 10…
… Supporting member, 11 …… Bubble, 12… Gutter, 13… Conduit.
Claims (1)
下方向に移動して塗布槽内に挿入可能に支持する被塗布
物支持手段と、塗布槽から回収された塗布液を保持し、
塗布槽に再供給するための塗布液回収タンクと、塗布槽
から塗布液回収タンクに塗布液を導入するための塗布液
回収部材を具備する浸漬塗布装置において、該塗布液回
収部材が、塗布槽上端から溢流する塗布液を受けるため
の樋と、該樋と連通し、塗布液回収タンク内で開口する
案内管とよりなり、該案内管の先端部分は、塗布液回収
タンク内において下方に向かってらせん状に傾斜し、か
つ、先端が塗布液回収タンク内の塗布液中で開口するよ
うに設けられてなることを特徴とする浸漬塗布装置。1. A coating tank for holding a coating solution, an object support means for vertically moving an object to be supported so that the object can be inserted into the coating tank, and a coating solution recovered from the coating tank. Then
In a dip coating apparatus comprising a coating liquid recovery tank for re-supplying to the coating tank and a coating liquid recovery member for introducing the coating liquid from the coating tank to the coating liquid recovery tank, the coating liquid recovery member is a coating tank. It consists of a gutter for receiving the coating liquid overflowing from the upper end and a guide tube communicating with the gutter and opening in the coating liquid recovery tank, and the tip part of the guide tube is downward in the coating liquid recovery tank. An immersion coating apparatus, which is provided so as to incline in a spiral shape and its tip is opened in the coating liquid in the coating liquid recovery tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13506788U JPH07214Y2 (en) | 1988-10-18 | 1988-10-18 | Immersion coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13506788U JPH07214Y2 (en) | 1988-10-18 | 1988-10-18 | Immersion coating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0257174U JPH0257174U (en) | 1990-04-25 |
| JPH07214Y2 true JPH07214Y2 (en) | 1995-01-11 |
Family
ID=31394374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13506788U Expired - Lifetime JPH07214Y2 (en) | 1988-10-18 | 1988-10-18 | Immersion coating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07214Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107835942B (en) * | 2015-02-24 | 2021-01-12 | 株式会社日立高新技术 | Automatic analyzer and liquid container |
-
1988
- 1988-10-18 JP JP13506788U patent/JPH07214Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0257174U (en) | 1990-04-25 |
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