JPH0857404A - Cleaning method for coating device - Google Patents
Cleaning method for coating deviceInfo
- Publication number
- JPH0857404A JPH0857404A JP6194451A JP19445194A JPH0857404A JP H0857404 A JPH0857404 A JP H0857404A JP 6194451 A JP6194451 A JP 6194451A JP 19445194 A JP19445194 A JP 19445194A JP H0857404 A JPH0857404 A JP H0857404A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- cleaning
- thinner
- air
- paint
- 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.)
- Withdrawn
Links
Landscapes
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば多色塗装装置の
色替洗浄時に使用される洗浄用溶剤の量を節約できる洗
浄方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning method capable of saving an amount of a cleaning solvent used for color changing cleaning of a multicolor coating apparatus.
【０００２】[0002]
【従来の技術】多色の塗料を塗装機に供給するにあた
り、１本の塗料供給路を共用する多色塗装装置にあって
は、従来から色替する時は塗料供給路の内部に洗浄用溶
剤と洗浄用エアを導入して洗浄している。この際、洗浄
用溶剤の使用量の削減を図るため、例えば特開平６−７
１２０３号公報に開示される先行技術が知られている。
この先行技術は予め洗浄に必要な量の洗浄用溶剤を充填
しておく溶剤充填配管を設けておき、必要量の洗浄用溶
剤を加圧エアによって塗料供給路に送り込むようにして
いる。2. Description of the Related Art In supplying a multicolor paint to a coating machine, in a multicolor coating apparatus which shares one paint supply passage, when the color is changed, it is necessary to wash the inside of the paint supply passage. Cleaning is performed by introducing solvent and cleaning air. At this time, in order to reduce the amount of the cleaning solvent used, for example, JP-A-6-7
The prior art disclosed in Japanese Patent No. 1203 is known.
In this prior art, a solvent filling pipe for preliminarily filling an amount of cleaning solvent required for cleaning is provided, and the required amount of cleaning solvent is sent to the paint supply passage by pressurized air.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記の方法に
よっても、塗料供給路内を洗浄用溶剤が一方向に流れる
だけであるため、洗浄効果を上げるためにはある程度の
洗浄用溶剤が必要とされ、溶剤の消費量削減に限度があ
る。However, even with the above method, since the cleaning solvent only flows in one direction in the paint supply passage, a certain amount of cleaning solvent is required to improve the cleaning effect. There is a limit to the reduction of solvent consumption.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
本発明は、塗料供給路に所定量の洗浄用溶剤を導入し、
この洗浄用溶剤を塗料供給路中で反復移動させて洗浄す
るようにした。また、この洗浄用溶剤の反復移動は、塗
料供給路に洗浄用エアを導入する少なくとも２ヵ所のエ
ア弁と、少なくとも２ヵ所のダンプ弁の開閉動作により
行うようにした。In order to solve the above problems, the present invention introduces a predetermined amount of cleaning solvent into a paint supply passage,
This cleaning solvent was repeatedly moved in the coating material supply path for cleaning. The repetitive movement of the cleaning solvent is performed by opening and closing at least two air valves for introducing cleaning air into the paint supply passage and at least two dump valves.
【０００５】[0005]
【作用】洗浄する準備段階として何等かの手段で塗料供
給路内に残存する塗料を抜き出し、塗料供給路内に所定
量の洗浄用溶剤を導入する。この洗浄用溶剤を塗料供給
路内で反復移動させて洗浄すれば、同一箇所を何回も洗
浄用溶剤が通過し、少ない洗浄用溶剤で洗浄効果の高い
洗浄が行われる。As a preparatory step for cleaning, the paint remaining in the paint supply passage is extracted by some means, and a predetermined amount of cleaning solvent is introduced into the paint supply passage. If the cleaning solvent is repeatedly moved in the paint supply path for cleaning, the cleaning solvent passes through the same location many times, and cleaning with a high cleaning effect can be performed with less cleaning solvent.
【０００６】また、例えば塗料供給路の上流側端部と下
流側端部にエア弁とダンプ弁を設け、一方側のエア弁を
開放してエアを供給するとともに他方側のダンプ弁を開
放すれば、エア圧によって洗浄用溶剤は他方側に向けて
移動し、反対に他方側のエア弁を開放してエアを供給す
るとともに一方側のダンプ弁を開けば、エア圧により洗
浄用溶剤は一方側に向けて移動する。これを繰り返して
内部の洗浄用溶剤を反復移動させる。Further, for example, an air valve and a dump valve are provided at the upstream end and the downstream end of the paint supply passage, and the air valve on one side is opened to supply air and the dump valve on the other side is opened. For example, the cleaning solvent moves toward the other side by the air pressure, and conversely, the air valve on the other side is opened to supply air and the dump valve on one side is opened. Move to the side. By repeating this, the cleaning solvent inside is repeatedly moved.
【０００７】[0007]
【実施例】以下に本発明の実施例を添付図面に基づいて
説明する。ここで、図１は本発明に係る塗装装置の洗浄
方法を実施するための洗浄装置の概要図、図２は同装置
の制御プロセスを示すチャートである。図１に示すよう
に、塗装装置は不図示の塗料源に接続される多色塗料切
替供給バルブ１（カラーチェンジバルブ、以下ＣＣＶと
いう。）と、このＣＣＶ１のマニホールドＭ1に接続さ
れる塗料供給路３と、この塗料供給路３の下流に設けら
れたバルブ体２と、このバルブ体２に接続される塗装機
４のホースＨを備えている。Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a schematic view of a cleaning apparatus for carrying out the cleaning method for a coating apparatus according to the present invention, and FIG. 2 is a chart showing a control process of the apparatus. As shown in FIG. 1, the coating apparatus is a multicolor paint switching supply valve 1 (color change valve, hereinafter referred to as CCV) connected to a paint source (not shown), and a paint supply connected to a manifold M 1 of this CCV 1. A path 3, a valve body 2 provided downstream of the paint supply path 3, and a hose H of a coating machine 4 connected to the valve body 2 are provided.
【０００８】そして、前記ＣＣＶ１には、各色ごとの塗
料を供給制御するカラーバルブＣ1、Ｃ2と、洗浄用溶剤
としてのシンナを供給制御するシンナバルブＴｈ1と、
洗浄用エアを供給制御するエアバルブＡ1と、塗料供給
路３内のエア等を排出制御するダンプバルブＤ1が設け
られ、塗色を替える時はカラーバルブＣ1、Ｃ2の開閉を
切換えるようにしている。尚、このカラーバルブＣ1、
Ｃ2は説明上２色に対応するものとしているが、実際は
もっと多く設けられている。The CCV 1 is provided with color valves C 1 and C 2 for controlling the supply of paint for each color, and a thinner valve Th 1 for controlling the supply of thinner as a cleaning solvent.
An air valve A 1 for controlling the supply of the cleaning air and a dump valve D 1 for controlling the discharge of the air in the paint supply passage 3 are provided, and the color valves C 1 , C 2 can be opened and closed when changing the coating color. I have to. In addition, this color valve C 1 ,
Although C 2 is supposed to correspond to two colors for the sake of explanation, in reality, more colors are provided.
【０００９】また、前記バルブ体２には、塗料供給路３
に接続する３方弁Ｖと、前記ホースＨに接続するトリガ
バルブＴと、シンナを供給制御するシンナバルブＴｈ2
と、洗浄用エアを供給制御するエアバルブＡ2と、塗料
供給路３内のエア等を排出制御するダンプバルブＤ2が
設けられ、前記３方弁Ｖは、オフ位置で塗料供給路３と
ダンプバルブＤ2を連通させ、オン位置で塗料供給路３
とマニホールドＭ2側を連通させるようにしている。ま
た、前記トリガバルブＴは塗装機４のトリガｔ作動によ
って開閉制御される。The valve body 2 has a paint supply passage 3
To the hose H, a trigger valve T connected to the hose H, and a thinner valve Th 2 for controlling the supply of thinner.
An air valve A 2 for controlling the supply of the cleaning air and a dump valve D 2 for controlling the discharge of the air and the like in the paint supply passage 3, and the three-way valve V is dumped to the paint supply passage 3 and the dump valve in the off position. Connect the valve D 2 to the paint supply path 3 at the ON position.
And the manifold M 2 side are communicated with each other. The trigger valve T is opened / closed by the operation of the trigger t of the coating machine 4.
【００１０】以上のような塗装装置において、本発明の
洗浄方法は塗料供給路３を洗浄する方法として適用され
ており、ホースＨと塗装機４側の洗浄については従来法
により行うようにしている。これはホースＨから先端は
塗料通路が短いため本案を採用する利点が少ないからで
ある。In the coating apparatus as described above, the cleaning method of the present invention is applied as a method for cleaning the coating material supply passage 3, and the hose H and the coating machine 4 side are cleaned by the conventional method. . This is because the paint passage from the hose H to the tip is short, so that there is little advantage in adopting the present invention.
【００１１】それでは本発明の色替時の洗浄方法につい
て説明する。今、ＣＣＶ１のカラーバルブＣ1を開いて
例えば赤色の塗料を塗装していた状態から、今度はカラ
ーバルブＣ2に対応する白色の塗料で塗装する場合は、
赤色塗料源に通じるカラーバルブＣ1を閉じる。この
際、塗料供給路３内、及びホースＨ内には未だ赤色塗料
が残っている。Now, the cleaning method at the time of color change of the present invention will be described. When the color valve C 1 of CCV 1 is opened and the red paint is applied, for example, when the white paint corresponding to the color valve C 2 is applied,
Close the color valve C 1 leading to the red paint source. At this time, the red paint still remains in the paint supply passage 3 and the hose H.
【００１２】そこで、洗浄開始前の準備段階として、ま
ずバルブ体２のダンプバルブＤ2を開くとともに、３方
弁Ｖをオフ（塗料供給路３をダンプバルブＤ2側に連通
させた状態）にし、塗料供給路３内に残存する塗料をダ
ンプバルブＤ2側からダンプする。このダンプは、ＣＣ
Ｖ１のシンナバルブＴｈ1とエアバルブＡ1からシンナと
エアをミックス状態にして送り込んで残存塗料を押出し
ても良いし、エアのみで押出しても良く、また、バルブ
体２のダンプバルブＤ2側から吸引装置で引出しても良
い。Therefore, as a preparatory step before the start of cleaning, first, the dump valve D 2 of the valve body 2 is opened and the three-way valve V is turned off (the paint supply passage 3 is in communication with the dump valve D 2 side). The paint remaining in the paint supply passage 3 is dumped from the dump valve D 2 side. This dump is CC
The residual paint may be extruded by sending the thinner and air from the V1 thinner valve Th 1 and the air valve A 1 in a mixed state, or may be extruded only by the air, or sucked from the dump valve D 2 side of the valve body 2. It may be pulled out by a device.
【００１３】以上のような洗浄開始前の準備段階が終え
たなら、図２に示すような各バルブの初期状態から洗浄
を開始する。即ち、ＣＣＶ１のシンナバルブＴｈ1を開
いて塗料供給路３に所定量のシンナを導入する。そし
て、この所定量のシンナは、塗料供給路３内に一杯に満
たされない量であり、また、内部に残存する塗料を洗い
落とすのに十分な量に設定する。When the preparatory stage before the start of cleaning as described above is completed, cleaning is started from the initial state of each valve as shown in FIG. That is, the thinner valve Th 1 of CCV 1 is opened to introduce a predetermined amount of thinner into the paint supply passage 3. The predetermined amount of thinner is an amount that does not fill the paint supply passage 3 completely, and is set to an amount sufficient to wash off the paint remaining inside.
【００１４】そして所定量のシンナを導入した後シンナ
バルブＴｈ1を閉じたら、ＣＣＶ１のエアバルブＡ1と、
バルブ体２のダンプバルブＤ2を同時に開くとともに、
３方弁Ｖをオフ（塗料供給路３をダンプバルブＤ2側に
連通させた状態）にする。すると内部のシンナは上流側
から供給されるエア圧によって下流に向けて押し流され
る。Then, after the thinner valve Th 1 is closed after introducing a predetermined amount of thinner, the CCV 1 air valve A 1 and
With opening the dump valve D 2 of the valve body 2 at the same time,
The three-way valve V is turned off (the paint supply passage 3 is in communication with the dump valve D 2 side). Then, the thinner inside is pushed downstream by the air pressure supplied from the upstream side.
【００１５】次に、シンナが塗料供給路３の下流端近傍
に達した時点で、ＣＣＶ１のエアバルブＡ1と、バルブ
体２のダンプバルブＤ2を閉じ、同時にバルブ体２のエ
アバルブＡ2と、ＣＣＶ１４のダンプバルブＤ1を開くと
ともに３方弁Ｖをオン（塗料供給路３をマニホールドＭ
2側に連通させる状態）にする。すると、塗料供給路３
の下流側から供給されたエア圧によってシンナは上流側
に向けて押し戻される。Next, when the thinner reaches the vicinity of the downstream end of the paint supply path 3, the air valve A 1 of the CCV 1 and the dump valve D 2 of the valve body 2 are closed, and at the same time, the air valve A 2 of the valve body 2, The dump valve D 1 of the CCV 14 is opened and the three-way valve V is turned on (the paint supply passage 3 is connected to the manifold M).
2 ) Connect to the side). Then, the paint supply path 3
The thinner is pushed back toward the upstream side by the air pressure supplied from the downstream side of the thinner.
【００１６】このような操作を数回繰り返して塗料供給
路３内のシンナを反復移動させることで、塗料供給路３
内部の塗料は綺麗に洗い落とされ、最後に下流側のバル
ブ体２のダンプバルブＤ2を開いて洗浄済みシンナを排
出する。また、本実施例では洗浄済みシンナをダンプバ
ルブＤ2から排出した後、ＣＣＶ１のシンナバルブＴｈ1
から再度所定量のシンナを導入し、このシンナをＣＣＶ
１のエアバルブＡ1から供給したエアによってダンプバ
ルブＤ2に向けて押し流し、仕上げ洗浄を行うようにし
ている。By repeating the above operation several times to repeatedly move the thinner in the paint supply passage 3, the paint supply passage 3
The paint inside is washed off cleanly, and finally the dump valve D 2 of the valve body 2 on the downstream side is opened to discharge the cleaned thinner. Further, in this embodiment, after the cleaned thinner is discharged from the dump valve D 2, the thinner valve Th 1 of CCV1 is discharged.
Introduce a specified amount of thinner again from
The air supplied from the first air valve A 1 causes the air to flow toward the dump valve D 2 for finishing cleaning.
【００１７】ところで、塗装機４とホースＨの洗浄は、
バルブ体２のシンナバルブＴｈ2とエアバルブＡ2の制御
によって従来法により行う。この方法は、例えばシンナ
バルブＴｈ2、トリガバルブＴを開放してホースＨ内と
塗装機４内にシンナを流通させるか、或はエアバルブＡ
2からのエアをホースＨ内と塗装機４内に流通させる
か、又は両者を組合わせることによって行うが、前述の
ようにホースＨの長さが短いため使用するシンナも少量
で済む。そして、この塗装機４とホースＨの洗浄を前記
塗料供給路３の洗浄と並行して行えば（例えば図２の点
Ｐ以降）、色替洗浄作業が迅速に行われ、色替に伴う作
業中断時間が短縮される。By the way, the cleaning of the coating machine 4 and the hose H
The conventional method is performed by controlling the thinner valve Th 2 and the air valve A 2 of the valve body 2. In this method, for example, the thinner valve Th 2 and the trigger valve T are opened to flow thinner in the hose H and the coating machine 4, or the air valve A is used.
The air from 2 is circulated in the hose H and the coating machine 4, or a combination of both is used. However, since the hose H is short in length as described above, a small amount of thinner can be used. If the cleaning of the coating machine 4 and the hose H is performed in parallel with the cleaning of the paint supply passage 3 (for example, after point P in FIG. 2), the color change cleaning work is quickly performed and the work accompanying the color change is performed. The interruption time is reduced.
【００１８】[0018]
【発明の効果】以上のように本発明の洗浄方法は塗料供
給路の中に所定量の洗浄用溶剤を導入し、この洗浄用溶
剤を反復移動させながら洗浄するようにしたため、同一
箇所を何回も洗浄用溶剤が通過し、少量の洗浄用溶剤で
ありながら、大量の洗浄用溶剤を同一方向に流すのと同
じ効果が得られる。従って洗浄用溶剤の節約が可能であ
る。また、反復移動させるための手段を２ヵ所のエア弁
とダンプ弁の開閉制御によることで、装置の構成が簡易
で且つ安価である。As described above, according to the cleaning method of the present invention, a predetermined amount of cleaning solvent is introduced into the paint supply path, and the cleaning solvent is repeatedly moved while cleaning. The cleaning solvent passes through many times, and the same effect as that of flowing a large amount of the cleaning solvent in the same direction can be obtained even though the cleaning solvent is a small amount. Therefore, it is possible to save the cleaning solvent. Further, since the means for repeating the movement is controlled by opening / closing the air valve and the dump valve at two places, the structure of the device is simple and inexpensive.
【図１】本発明に係る塗装装置の洗浄方法を実施するた
めの洗浄装置の概要図FIG. 1 is a schematic view of a cleaning device for carrying out a cleaning method for a coating device according to the present invention.
【図２】同装置の制御プロセスを示すチャートFIG. 2 is a chart showing a control process of the device.
１…多色塗料切替供給バルブ（ＣＣＶ）、２…バルブ
体、３…塗料供給路、４…塗装機、Ａ1…エアバルブ、
Ａ2…エアバルブ、Ｔｈ1…シンナバルブ、Ｔｈ2…シン
ナバルブ、Ｄ1…ダンプバルブ、Ｄ2…ダンプバルブ。1 ... multicolor paint switching supply valve (CCV), 2 ... valve body, 3 ... paint feed channel, 4 ... coating machine, A 1 ... air valve,
A 2 ... air valve, Th 1 ... thinner valve, Th 2 ... thinner valve, D 1 ... dump valve, D 2 ... dump valve.
Claims (2)
浄用溶剤によって洗浄する方法において、前記塗料供給
路に所定量の洗浄用溶剤を導入し、この洗浄用溶剤を塗
料供給路中で反復移動させて洗浄することを特徴とする
塗装装置の洗浄方法。1. A method of cleaning a paint supply path for supplying paint to a coating machine with a cleaning solvent, wherein a predetermined amount of a cleaning solvent is introduced into the paint supply path, and the cleaning solvent is supplied in the paint supply path. A method for cleaning a coating apparatus, which is characterized in that the apparatus is repeatedly moved for cleaning.
おいて、前記洗浄用溶剤の反復移動は、塗料供給路に洗
浄用エアを導入する少なくとも２ヵ所のエア弁と、少な
くとも２ヵ所のダンプ弁の開閉動作により行うことを特
徴とする塗装装置の洗浄方法。2. The method for cleaning a coating apparatus according to claim 1, wherein the cleaning solvent is repeatedly moved by at least two air valves for introducing cleaning air into the paint supply passage and at least two dump valves. A method for cleaning a coating device, which is performed by opening and closing a valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6194451A JPH0857404A (en) | 1994-08-18 | 1994-08-18 | Cleaning method for coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6194451A JPH0857404A (en) | 1994-08-18 | 1994-08-18 | Cleaning method for coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0857404A true JPH0857404A (en) | 1996-03-05 |
Family
ID=16324795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6194451A Withdrawn JPH0857404A (en) | 1994-08-18 | 1994-08-18 | Cleaning method for coating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0857404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005058946A (en) * | 2003-08-18 | 2005-03-10 | Seiko Epson Corp | Functional droplet discharge head washing apparatus, washing method, droplet discharge apparatus, electro-optical device manufacturing method, electro-optical device, and electronic device |
-
1994
- 1994-08-18 JP JP6194451A patent/JPH0857404A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005058946A (en) * | 2003-08-18 | 2005-03-10 | Seiko Epson Corp | Functional droplet discharge head washing apparatus, washing method, droplet discharge apparatus, electro-optical device manufacturing method, electro-optical device, and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20011106 |