JP3673056B2 - Color change cleaning method for multicolor coating equipment - Google Patents
Color change cleaning method for multicolor coating equipment Download PDFInfo
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- JP3673056B2 JP3673056B2 JP08173097A JP8173097A JP3673056B2 JP 3673056 B2 JP3673056 B2 JP 3673056B2 JP 08173097 A JP08173097 A JP 08173097A JP 8173097 A JP8173097 A JP 8173097A JP 3673056 B2 JP3673056 B2 JP 3673056B2
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- 238000004140 cleaning Methods 0.000 title claims description 145
- 239000011248 coating agent Substances 0.000 title claims description 75
- 238000000576 coating method Methods 0.000 title claims description 75
- 238000000034 method Methods 0.000 title claims description 9
- 239000003973 paint Substances 0.000 claims description 46
- 239000012530 fluid Substances 0.000 claims description 27
- 238000011144 upstream manufacturing Methods 0.000 claims description 25
- 239000002699 waste material Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 4
- 238000009503 electrostatic coating Methods 0.000 description 20
- 238000010422 painting Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011538 cleaning material Substances 0.000 description 1
- 238000009500 colour coating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Description
【０００１】
【発明の属する技術分野】
本発明は、塗装機に対して各色塗料を選択供給するように成された多色塗装装置の色替洗浄方法に関する。
【０００２】
【従来の技術】
例えば、自動車ボディの塗装を行う多色静電塗装装置においては、先行する被塗物を塗装する前色塗料と後続の被塗物を塗装する次色塗料の塗色が異なる場合に、色混じりを起こさないように色替洗浄を行うようにしている。
この色替洗浄は、塗装機から吹き出される飛沫が被塗物にかからない所定の洗浄位置まで塗装機を退避させた状態で、色替バルブ装置から静電塗装機に至るまでの塗料供給流路内に、洗浄エア・洗浄シンナなどの洗浄流体を供給することにより、色替バルブ装置，塗料供給流路及び静電塗装機の内部に残存する塗料を洗浄除去するものである。
そして、この場合に、被塗物となる自動車ボディはコンベアに載せられて所定間隔で次々と搬送されてくるので、色替洗浄は、前色塗料の塗装終了後，次色塗料の塗装開始までの短い時間内に終了させなければならない。
【０００３】
ところで、一般の多色静電塗装装置は、静電塗装機を取り付ける塗装ロボットやレシプロケータにかかる負荷を軽減するために、各色塗料を選択供給する色替バルブ装置を静電塗装機から離れたところに配設し、塗料ホースなどの塗料供給流路が長く配管されているので、色替バルブ装置内部及び長い塗料供給流路内に残存する塗料をきれいに除去するのに時間がかかる。
【０００４】
このため従来より、図２に示すように、各色塗料を選択供給する色替バルブ装置１から定量供給手段２を介して静電塗装機３に至る塗料供給流路４の前記塗装機３寄りに洗浄バルブ機構５を介装し、当該洗浄バルブ機構５により前記塗料供給流路４をその上流側４Ａと下流側４Ｂに分けた多色静電塗装装置が提案されている（特開昭６１−４６２７１号公報）。
この多色静電塗装装置によれば、色替洗浄を行う場合に、色替バルブ装置１から供給される洗浄エア，洗浄シンナで当該色替バルブ装置１から洗浄バルブ機構５に至るまでの上流側４Ａを洗浄し、その廃液を洗浄バルブ機構５から廃液タンク６に排出する。そして、これと同時に、洗浄バルブ機構５から供給される洗浄エア，洗浄シンナで当該洗浄バルブ機構５から静電塗装機３に至るまでの下流側４Ｂを洗浄するようにしている。
このように、長い塗料供給流路４をその上流側４Ａ及び下流側４Ｂとに分けて、夫々を個別に且つ同時に洗浄することができるので、色替洗浄時間を短縮することができる。
【０００５】
【発明が解決しようとする課題】
しかしながら、最近では生産効率向上の要請から、洗浄時間をより短縮することが望まれている。
そして、本発明者の実験によれば、洗浄バルブ機構５の下流側４Ｂは比較的短時間で洗浄できるものの、洗浄バルブ機構５の上流側４Ａは内部に複雑な流路を形成した色替バルブ装置１が接続されているため洗浄に比較的長時間を要することが判明した。
【０００６】
そこで本発明は、洗浄バルブ機構の上流側の洗浄をより早く終了させることにより全体の洗浄時間を短縮させることを技術的課題としている。
【０００７】
【課題を解決するための手段】
この課題を解決するために、本発明は、各色塗料及び洗浄流体を選択供給する色替バルブ装置から塗装機に至る塗料供給流路に、前記色替バルブ装置から送給される各色塗料又は洗浄流体を前記塗装機又は廃液タンクに切換送給するトリガ／ダンプバルブと、洗浄流体供給源から送給される洗浄流体を前記塗装機に対して送給する洗浄流体供給バルブを備えた洗浄バルブ機構が介装されて、当該洗浄バルブ機構により前記塗料供給流路がその上流側と下流側に分けられた多色塗装装置の色替洗浄方法において、前記色替バルブ装置から供給される塗料を噴霧して被塗物を塗装していた塗装機が当該被塗物の塗装終了位置に達して、前記色替バルブ装置から当該塗装機への塗料の供給が停止された後、当該塗装機が所定の洗浄位置に退避する前に、前記色替バルブ装置から洗浄流体を供給すると共に、その廃液を洗浄バルブ機構のトリガ／ダンプバルブから廃液タンクに排出させて、前記洗浄バルブ機構の上流側の洗浄を開始すると共に、前記塗装機が予め設定された所定の洗浄位置に退避した後に、前記洗浄バルブ機構の洗浄流体供給バルブを開いて前記塗装機に対し洗浄流体を供給して、洗浄バルブ機構の下流側の洗浄を開始することを特徴とする。
【０００８】
本発明によれば、塗装機が塗装終了位置に達して、色替バルブ装置からの塗料の供給が停止された後、塗装機が洗浄位置まで退避する前に、洗浄バルブ機構の上流側の洗浄を開始する。
すなわち、色替バルブ装置から塗装機に至る塗料供給流路に介装された洗浄バルブ機構のトリガ／ダンプバルブを操作して、洗浄バルブ機構の上流側を廃液タンクに連通し、色替バルブ装置から洗浄流体を供給すると、洗浄流体は色替バルブ装置から洗浄供給バルブ機構のトリガ／ダンプバルブを経て廃液タンクに排出される。
これにより、色替バルブ装置から洗浄バルブ機構に至る流路内が洗浄されることとなり、このとき廃液はすべて廃液タンクに回収され、塗装機から噴出されないので、被塗物に飛沫がかかることもない。
【０００９】
次いで、塗装機が移動して被塗物に飛沫がかからない洗浄位置まで退避した後に、洗浄バルブ機構の下流側の洗浄を開始する。
すなわち、洗浄バルブ機構の洗浄流体供給バルブを開いて前記塗装機に対し洗浄流体を送給すると、その廃液は塗装機から噴出して排出され、洗浄バルブの下流側が洗浄される。
このように、塗装機が塗装終了位置に達して塗料の供給が停止された後、塗装機が洗浄位置まで退避する前に、洗浄に長時間を要する色替バルブ装置が接続されている上流側の洗浄を開始するようにしたので、塗装機が塗装終了位置から洗浄位置に移動するまでの時間が有効に活用され、色替洗浄の終了時間を早めることができる。
【００１０】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて具体的に説明する。
図１は本発明方法を示すタイミングチャートである。
【００１１】
本発明方法に使用する多色塗装装置は、各色塗料，洗浄エア（洗浄流体），洗浄溶剤（洗浄流体）を選択供給する色替バルブ装置１からエアオペレートレギュレータやフラッシャブルギヤポンプなどの定量供給手段２を介して静電塗装機（塗装機）３に至る塗料供給流路４に洗浄バルブ機構５が介装され、当該洗浄バルブ機構５により塗料供給流路４がその上流側４Ａと下流側４Ｂに分かれている。
色替バルブ装置１は、各色塗料供給源に接続された色替バルブＶ，Ｖ…と、洗浄エア供給源及び洗浄シンナ供給源に接続された洗浄エア供給バルブＶａ及び洗浄シンナ供給バルブＶｃを備えている。
また、洗浄バルブ機構５は、前記色替バルブ装置１から送給される各色塗料，洗浄エア，洗浄溶剤を前記塗装機３又は廃液タンク６に切換送給するトリガ／ダンプバルブＶT と、洗浄エア供給源及び洗浄シンナ供給源に接続された洗浄エア供給バルブ（洗浄流体供給バルブ）ＶE 及び洗浄シンナ供給バルブ（洗浄流体供給バルブ）ＶL を備えている。
前記トリガ／ダンプバルブＶT は、塗装時に上流側４Ａを下流側４Ｂに接続させ、それ以外は上流側４Ａを廃液タンク６に接続された廃液流路７に接続させるトリガバルブ８と、前記廃液流路７に介装されたダンプバルブ９とからなる。
【００１２】
次に、本発明方法による色替洗浄を行う場合について説明する。
例えは、自動車ボディＷの側面を塗装する場合は、まず、塗装開始位置Ｐｓに静電塗装機３を待機させておき（Ｔ1 ）、自動車ボディＷが到来したときに、高電圧を印加させた状態で上下に往復動させながら自動車ボディＷの後方へ向かって塗装終了位置Ｐｅまで相対移動させる（Ｔ1 〜Ｔ2 ）。
この間、色替バルブ装置１は、所望の色の塗料を供給する任意の色替バルブＶを開き、洗浄バルブ機構５は、トリガ／ダンプバルブＶT により上流側４Ａと下流側４Ｂを連通させ、洗浄エア供給バルブＶE 及び洗浄シンナ供給バルブＶL を閉じておく。
これにより、色替バルブ装置１から供給された塗料が静電塗装機３から噴霧されて、塗装が行われる。
【００１３】
次いで、静電塗装機３が塗装終了位置に達すると、当該塗装機３への高電圧の印加が停止されると共に、塗料を供給していた前記色替バルブＶが閉じて色替バルブ装置１からの塗料の供給が停止され、塗装機３は塗装開始位置３に向かって移動開始する（Ｔ2 〜Ｔ3 ）
そして、これと同時に、色替バルブ装置１から洗浄バルブ機構５に至る上流側４Ａ内の洗浄を開始する。
具体的には、まず、洗浄バルブ機構５のトリガ／ダンプバルブＶT を操作して、トリガバルブ８により上流側４Ａと下流側４Ｂを遮断すると共に、ダンプバルブ９を開いて、上流側４Ａから廃液タンク６に至る廃液流路７を導通させる。
そして、色替バルブ装置１の洗浄エア供給バルブＶａ及び洗浄シンナ供給バルブＶｃを交互に開いて洗浄エアと洗浄シンナを断続的に供給すれば、塗装機３が塗装終了位置Ｐｅから塗装開始位置Ｐｓに戻りながら、色替バルブ装置１から洗浄バルブ機構５に至る上流側４Ａ内が洗浄される。
このとき、廃液はすべて廃液タンクに回収され、塗装機３から噴出されないので、塗装機３が自動車ボディＷに正対していたとしても、当該自動車ボディＷに廃液の飛沫がかかることもない。
【００１４】
次いで、静電塗装機３が塗装開始位置（洗浄位置）Ｐｓに退避した後に、洗浄バルブ機構５から塗装機３に至る下流側４Ｂを洗浄する。
具体的には、塗装機３の霧化頭をシュラウド（図示せず）内に向けた状態で、前記洗浄バルブ機構５の洗浄エア供給バルブＶE 及び洗浄シンナ供給バルブＶL を交互に開いて洗浄エアと洗浄シンナを断続的に供給することにより、洗浄バルブ機構５から静電塗装機３に至る下流側４Ｂ内が洗浄され、その廃液は塗装機３から噴出されシュラウド内に回収される（Ｔ3 〜Ｔ4 ）
【００１５】
そして、上流側４Ａ及び下流側４Ｂ双方の洗浄が終了した時点で、当該塗装機３を塗装開始位置Ｐｓに待機させ、後続の自動車ボディＷが到来したときに、次色塗料で塗装を行う（Ｔ5 ）。
【００１６】
すなわち、静電塗装機３が塗装終了位置Ｐｅに達して塗料噴霧が終了したときに、当該塗装機３が洗浄位置となる塗装開始位置Ｐｓまで退避する前に、洗浄に長時間を要する色替バルブ装置１が接続されている上流側４Ａの洗浄を開始するようにしたので、静電塗装機３が塗装終了位置から洗浄位置に移動するまでの時間を有効に利用でき、色替洗浄の終了時間を早めることができる。
また、洗浄時間が比較的短くて済む洗浄バルブ機構５の下流側４Ｂは、静電塗装機３が洗浄位置となる塗装開始位置Ｐｓまで退避したときに、洗浄開始しているので、自動車ボディＷに飛沫がかかることもない。
なお、上述した説明では静電塗装機３を備えた多色静電塗装装置を用いる場合について説明したが、本発明はこれに限らず、エア霧化などの非静電塗装機を備えた多色塗装装置にも適用できることはもちろんである。
【００１７】
【発明の効果】
以上述べたように、本発明によれば、洗浄に長時間を要する色替バルブ装置が接続されている洗浄バルブ機構の上流側の洗浄開始タイミングと、洗浄時間が比較的短くて済む洗浄バルブ機構の下流側の洗浄開始タイミングをずらし、洗浄バルブ機構の上流側は、塗装機が塗装終了位置に達して塗料の供給が噴霧が終了したときに洗浄開始するようにそのタイミングを早めたので色替洗浄を早く終了させることができると同時に、洗浄バルブ機構の下流側は、塗装機が洗浄位置まで退避したときに洗浄開始するようになっているので塗装機から吹き出される洗浄流体の飛沫が被塗物に付着することもないという大変優れた効果を奏する。
【図面の簡単な説明】
【図１】本発明方法を示すタイミングチャート。
【符号の説明】
１・・・・・・色替バルブ装置
２・・・・・・定量供給手段
３・・・・・・静電塗装機（塗装機）
４・・・・・・塗料供給流路
４Ａ・・・・・上流側
４Ｂ・・・・・下流側
５・・・・・・洗浄バルブ機構
６・・・・・・廃液タンク
ＶT ・・・・・トリガ／ダンプバルブ
ＶE ・・・・・洗浄エア供給バルブ（洗浄流体供給バルブ）
ＶL ・・・・・洗浄シンナ供給バルブ（洗浄流体供給バルブ）
Ｗ・・・・・・自動車ボディ（被塗物）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a color change cleaning method for a multicolor coating apparatus configured to selectively supply each color paint to a coating machine.
[0002]
[Prior art]
For example, in a multicolor electrostatic coating device that paints an automobile body, color mixing occurs when the paint color of the previous color paint that coats the preceding object and the next color paint that paints the subsequent object are different. Color change cleaning is performed so as not to cause color.
This color change cleaning is a paint supply flow path from the color change valve device to the electrostatic coating machine in a state where the coating machine is retracted to a predetermined cleaning position where the spray blown from the coating machine does not hit the workpiece. By supplying a cleaning fluid such as cleaning air and cleaning thinner, the paint remaining in the color change valve device, the coating material supply channel and the electrostatic coating machine is cleaned and removed.
In this case, since the automobile body to be coated is placed on the conveyor and conveyed one after another at predetermined intervals, the color change cleaning is performed after the completion of the previous color paint and until the start of the next color paint. Must be completed within a short period of time.
[0003]
By the way, in general multicolor electrostatic coating equipment, in order to reduce the load on the painting robot and reciprocator to which the electrostatic painting machine is attached, the color changing valve device that selectively supplies each color paint is separated from the electrostatic painting machine. However, since the paint supply flow path such as the paint hose is long and piped, it takes time to cleanly remove the paint remaining in the color change valve device and the long paint supply flow path.
[0004]
Therefore, conventionally, as shown in FIG. 2, the paint
According to this multicolor electrostatic coating apparatus, when performing color change cleaning, the upstream from the color change valve apparatus 1 to the cleaning valve mechanism 5 by the cleaning air and cleaning thinner supplied from the color change valve apparatus 1. The side 4A is washed, and the waste liquid is discharged from the washing valve mechanism 5 to the waste liquid tank 6. At the same time, the downstream side 4B from the cleaning valve mechanism 5 to the electrostatic coating machine 3 is cleaned with the cleaning air and cleaning thinner supplied from the cleaning valve mechanism 5.
In this way, the long
[0005]
[Problems to be solved by the invention]
Recently, however, it has been desired to further reduce the cleaning time due to a demand for improving production efficiency.
According to the experiment of the present inventor, the downstream side 4B of the cleaning valve mechanism 5 can be cleaned in a relatively short time, but the upstream side 4A of the cleaning valve mechanism 5 has a complicated flow path formed therein. It has been found that cleaning takes a relatively long time because the apparatus 1 is connected.
[0006]
Therefore, the present invention has a technical problem to shorten the entire cleaning time by ending the cleaning on the upstream side of the cleaning valve mechanism earlier.
[0007]
[Means for Solving the Problems]
In order to solve this problem, the present invention provides each color paint or cleaning material fed from the color change valve device to a paint supply flow path from the color change valve device that selectively supplies each color paint and cleaning fluid to the coating machine. A cleaning valve mechanism comprising a trigger / dump valve for switching and feeding fluid to the coating machine or a waste liquid tank, and a cleaning fluid supply valve for feeding cleaning fluid fed from a cleaning fluid supply source to the coating machine In the color change cleaning method of the multicolor coating apparatus in which the paint supply flow path is divided into the upstream side and the downstream side by the cleaning valve mechanism, the paint supplied from the color change valve apparatus is sprayed. After the coating machine that has been painting the coating object reaches the coating end position of the coating object and the supply of the coating material from the color changing valve device to the coating machine is stopped, the coating machine is Before evacuating to the cleaning position The cleaning fluid is supplied from the color changing valve device, and the waste liquid is discharged from the trigger / dump valve of the cleaning valve mechanism to the waste liquid tank to start the cleaning of the upstream side of the cleaning valve mechanism, and the coating machine Is opened to a predetermined cleaning position set in advance, and then the cleaning fluid supply valve of the cleaning valve mechanism is opened to supply the cleaning fluid to the coating machine, and the downstream cleaning of the cleaning valve mechanism is started. It is characterized by.
[0008]
According to the present invention, the upstream side of the cleaning valve mechanism is cleaned before the coating machine retreats to the cleaning position after the coating machine reaches the coating end position and the supply of paint from the color change valve device is stopped. To start.
That is, the trigger / dump valve of the cleaning valve mechanism interposed in the paint supply flow path from the color change valve device to the coating machine is operated, and the upstream side of the cleaning valve mechanism is connected to the waste liquid tank, and the color change valve device When the cleaning fluid is supplied from, the cleaning fluid is discharged from the color change valve device to the waste liquid tank via the trigger / dump valve of the cleaning supply valve mechanism.
As a result, the inside of the flow path from the color change valve device to the cleaning valve mechanism is cleaned. At this time, all the waste liquid is collected in the waste liquid tank and is not ejected from the coating machine. Absent.
[0009]
Next, after the coating machine moves and retreats to a cleaning position where the coating object is not splashed, cleaning on the downstream side of the cleaning valve mechanism is started.
That is, when the cleaning fluid supply valve of the cleaning valve mechanism is opened to supply the cleaning fluid to the coating machine, the waste liquid is ejected from the coating machine and discharged, and the downstream side of the cleaning valve is cleaned.
In this way, after the coating machine reaches the coating end position and the supply of paint is stopped, before the coating machine retreats to the cleaning position, the upstream side where the color change valve device that requires a long time for cleaning is connected Since the cleaning is started, the time until the coating machine moves from the coating end position to the cleaning position is effectively utilized, and the end time of the color change cleaning can be shortened.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a timing chart showing the method of the present invention.
[0011]
The multicolor coating device used in the method of the present invention is a quantitative supply means such as an air operated regulator or a flashable gear pump from the color changing valve device 1 that selectively supplies each color paint, cleaning air (cleaning fluid), and cleaning solvent (cleaning fluid). A cleaning valve mechanism 5 is interposed in the paint
The color change valve device 1 includes color change valves V, V... Connected to each color paint supply source, a cleaning air supply valve Va and a cleaning thinner supply valve Vc connected to a cleaning air supply source and a cleaning thinner supply source. ing.
The cleaning valve mechanism 5 includes a trigger / dump valve V T of each color paint, wash air and switching換送feeding the cleaning solvent to the coating machine 3 or waste liquid tank 6 fed from the color change valve device 1, cleaning and an air supply and connected wash air supply valve to the washing thinner supply source (cleaning fluid supply valves) V E and washed thinner supply valve (cleaning fluid supply valves) V L.
The trigger / dump valve V T connects the upstream side 4A to the downstream side 4B at the time of painting, and connects the upstream side 4A to the waste liquid flow path 7 connected to the waste liquid tank 6 in other cases, and the waste liquid It consists of a
[0012]
Next, the case of performing color change cleaning by the method of the present invention will be described.
For example, when painting the side surface of the automobile body W, first, the electrostatic coating machine 3 is put on standby at the painting start position Ps (T 1 ), and a high voltage is applied when the automobile body W arrives. While being reciprocated up and down in this state, the vehicle body W is relatively moved toward the painting end position Pe toward the rear of the vehicle body W (T 1 to T 2 ).
During this time, the color change valve device 1 opens an arbitrary color change valve V for supplying a desired color paint, and the cleaning valve mechanism 5 causes the trigger / dump valve V T to communicate the upstream side 4A and the downstream side 4B, The cleaning air supply valve V E and the cleaning thinner supply valve V L are closed.
Thereby, the coating material supplied from the color change valve apparatus 1 is sprayed from the electrostatic coating machine 3, and coating is performed.
[0013]
Next, when the electrostatic coating machine 3 reaches the coating end position, the application of a high voltage to the coating machine 3 is stopped, and the color change valve V that has supplied the paint is closed to change the color change valve device 1. The supply of paint from is stopped, and the coating machine 3 starts moving toward the coating start position 3 (T 2 to T 3 ).
At the same time, cleaning in the upstream side 4A from the color change valve device 1 to the cleaning valve mechanism 5 is started.
Specifically, first, by operating the trigger / dump valve V T of the cleaning valve mechanism 5, thereby blocking the upstream 4A and the downstream side 4B by the trigger valve 8, by opening the
If the cleaning air supply valve Va and the cleaning thinner supply valve Vc of the color change valve device 1 are alternately opened to supply the cleaning air and the cleaning thinner intermittently, the coating machine 3 starts the coating start position Ps from the coating end position Pe. The inside of the
At this time, all of the waste liquid is collected in the waste liquid tank and is not ejected from the painting machine 3. Therefore, even if the painting machine 3 is directly facing the automobile body W, the splash of the waste liquid is not applied to the automobile body W.
[0014]
Next, after the electrostatic coating machine 3 is retracted to the coating start position (cleaning position) Ps, the downstream side 4B from the cleaning valve mechanism 5 to the coating machine 3 is cleaned.
Specifically, the cleaning air supply valve V E and the cleaning thinner supply valve V L of the cleaning valve mechanism 5 are alternately opened with the atomizing head of the coating machine 3 facing the shroud (not shown). By intermittently supplying cleaning air and cleaning thinner, the downstream side 4B from the cleaning valve mechanism 5 to the electrostatic coating machine 3 is cleaned, and the waste liquid is ejected from the coating machine 3 and collected in the shroud ( T 3 ~T 4)
[0015]
When both the upstream side 4A and the downstream side 4B have been cleaned, the coating machine 3 is put on standby at the coating start position Ps, and when the subsequent vehicle body W arrives, coating is performed with the next color paint ( T 5).
[0016]
That is, when the electrostatic coating machine 3 reaches the coating end position Pe and the spraying of the paint ends, the color change requiring a long time for cleaning before the coating machine 3 retreats to the coating start position Ps that becomes the cleaning position. Since the cleaning of the upstream side 4A to which the valve device 1 is connected is started, the time until the electrostatic coating machine 3 moves from the coating end position to the cleaning position can be used effectively, and the color change cleaning ends. You can speed up the time.
Further, the downstream side 4B of the cleaning valve mechanism 5 that requires a relatively short cleaning time starts cleaning when the electrostatic coating machine 3 is retracted to the coating start position Ps that is the cleaning position. There will be no splashes.
In the above description, the case where the multicolor electrostatic coating apparatus provided with the electrostatic coating machine 3 is used has been described. However, the present invention is not limited to this, and the present invention is not limited to this. Of course, it can also be applied to color coating equipment.
[0017]
【The invention's effect】
As described above, according to the present invention, the cleaning start timing on the upstream side of the cleaning valve mechanism to which the color change valve device that requires a long time for cleaning is connected and the cleaning time can be relatively short. Since the cleaning start timing on the downstream side is shifted and the upstream side of the cleaning valve mechanism has been advanced so that the cleaning starts when the coating machine reaches the coating end position and the supply of paint ends spraying. At the same time that cleaning can be completed, the downstream side of the cleaning valve mechanism starts cleaning when the coating machine is retracted to the cleaning position, so that the spray of cleaning fluid blown from the coating machine is covered. There is an excellent effect that it does not adhere to the paint.
[Brief description of the drawings]
FIG. 1 is a timing chart showing a method of the present invention.
[Explanation of symbols]
1 .... Color change valve device 2 .... Quantitative supply means 3 .... Electrostatic coating machine (painting machine)
4 .... Paint supply flow path 4A ... Upstream side 4B ... Downstream side 5 ... Cleaning valve mechanism 6 ... Waste liquid tank V T ... Trigger / dump valve V E ... Cleaning air supply valve (cleaning fluid supply valve)
VL: Cleaning thinner supply valve (cleaning fluid supply valve)
W ... Auto body (Coating)
Claims (1)
前記色替バルブ装置（１）から供給される塗料を噴霧して被塗物（Ｗ）を塗装していた塗装機（３）が当該被塗物（Ｗ）の塗装終了位置に達して、前記色替バルブ装置（１）から当該塗装機（３）への塗料の供給が停止された後、当該塗装機（３）が所定の洗浄位置に退避する前に、前記色替バルブ装置（１）から洗浄流体を供給すると共に、その廃液を洗浄バルブ機構（５）のトリガ／ダンプバルブ（ＶT ) から廃液タンク（６）に排出させて、前記洗浄バルブ機構（５）の上流側（4A）の洗浄を開始すると共に、
前記塗装機（３）が予め設定された所定の洗浄位置に退避した後に、前記洗浄バルブ機構（５）の洗浄流体供給バルブ(VE ,VL ) を開いて前記塗装機（３）に対し洗浄流体を供給して、洗浄バルブ機構（５）の下流側（4B）の洗浄を開始することを特徴とする多色塗装装置の色替洗浄方法。Each color paint or cleaning fed from the color change valve device (1) to the paint supply flow path (4) from the color change valve device (1) to the coating machine (3) that selectively supplies each color paint and cleaning fluid A trigger / dump valve (V T ) for switching and feeding fluid to the coating machine (3) or a waste liquid tank (6), and cleaning fluid fed from a cleaning fluid supply source to the coating machine (3) A cleaning valve mechanism (5) having a cleaning fluid supply valve (V E , V L ) for feeding is interposed, and the paint supply flow path (4) is located upstream of the cleaning valve mechanism (5) ( In the color change cleaning method of the multicolor coating equipment divided into 4A) and downstream side (4B),
The coating machine (3) that has sprayed the coating material supplied from the color change valve device (1) to coat the coating object (W) reaches the coating end position of the coating object (W), and After the supply of the paint from the color change valve device (1) to the coating machine (3) is stopped, before the paint machine (3) retreats to a predetermined cleaning position, the color change valve device (1) From the trigger / dump valve (V T ) of the cleaning valve mechanism (5) to the waste tank (6), and the upstream side (4A) of the cleaning valve mechanism (5). As well as starting cleaning
After the coating machine (3) is retracted to a predetermined cleaning position set in advance, the cleaning fluid supply valve (V E , V L ) of the cleaning valve mechanism (5) is opened to the coating machine (3). A color change cleaning method for a multicolor coating apparatus, characterized in that a cleaning fluid is supplied to start cleaning the downstream side (4B) of the cleaning valve mechanism (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08173097A JP3673056B2 (en) | 1997-03-31 | 1997-03-31 | Color change cleaning method for multicolor coating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08173097A JP3673056B2 (en) | 1997-03-31 | 1997-03-31 | Color change cleaning method for multicolor coating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10272388A JPH10272388A (en) | 1998-10-13 |
| JP3673056B2 true JP3673056B2 (en) | 2005-07-20 |
Family
ID=13754547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08173097A Expired - Fee Related JP3673056B2 (en) | 1997-03-31 | 1997-03-31 | Color change cleaning method for multicolor coating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3673056B2 (en) |
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1997
- 1997-03-31 JP JP08173097A patent/JP3673056B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10272388A (en) | 1998-10-13 |
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