JP3117109B2 - Multicolor coating equipment - Google Patents
Multicolor coating equipmentInfo
- Publication number
- JP3117109B2 JP3117109B2 JP06014994A JP1499494A JP3117109B2 JP 3117109 B2 JP3117109 B2 JP 3117109B2 JP 06014994 A JP06014994 A JP 06014994A JP 1499494 A JP1499494 A JP 1499494A JP 3117109 B2 JP3117109 B2 JP 3117109B2
- Authority
- JP
- Japan
- Prior art keywords
- paint
- valve
- cleaning
- cleaning solvent
- control air
- 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 - Fee Related
Links
Landscapes
- Spray Control Apparatus (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、被塗物の塗色に応じて
塗装機に供給する塗料の色替を行う多色塗装装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multicolor coating apparatus for changing the color of a paint supplied to a coating machine in accordance with the color of an object to be coated.
【０００２】[0002]
【従来の技術】コンベアで次々に搬送されてくる被塗物
を予め指定された色の塗料で塗装する多色塗装装置にお
いて、前色塗料から次色塗料への色替えを行うときに、
前色塗料による塗装終了直前に洗浄溶剤を塗料流量に応
じた流量で供給開始し、その洗浄溶剤で塗料配管内に残
存する塗料を押し出して塗装することが行われている
（特開昭５７−１３６９７０号公報第５図及び第６図参
照）。これによれば、前色塗料の塗装終了直前に、塗料
配管内を洗浄しながら塗装をすることができるので、次
色塗料の塗装を開始するまでの洗浄工程に要する時間を
極めて短くすることができる。2. Description of the Related Art In a multicolor coating apparatus for coating objects to be conveyed one after another by a conveyor with a paint of a predetermined color, when changing colors from a previous color paint to a next color paint,
Immediately before the end of coating with a pre-color paint, a cleaning solvent is started to be supplied at a flow rate corresponding to the flow rate of the paint, and the paint remaining in the paint pipe is extruded with the cleaning solvent to perform coating. No. 136970, FIGS. 5 and 6). According to this, immediately before the end of the coating of the previous color paint, the coating can be performed while cleaning the inside of the paint pipe, so that the time required for the cleaning process before starting the coating of the next color paint can be extremely shortened. it can.
【０００３】洗浄溶剤の流量制御は、制御エアの圧力で
弁開度が調整される流量制御用レギュレータにより行わ
れ、制御エアの圧力はエア供給配管に介装された電−空
変換器により調整され、電−空変換器は、制御装置から
出力される電気信号の電流値に応じて制御エアの圧力を
設定する。そして、塗料を押し出すときの洗浄溶剤の流
量は、塗装機に供給される塗料流量に等しい小流量に設
定され、しかも、塗料の種類や、塗料配管内の残存量に
応じて管内抵抗が変化するので、塗料を押し出すときは
これに応じて洗浄溶剤の流量を微妙に可変制御する必要
があり、また一方、塗装終了後の洗浄工程においては、
洗浄効果を高めるためできる限り高圧で洗浄溶剤を送給
しなければならない。[0003] The flow rate of the cleaning solvent is controlled by a flow rate control regulator whose valve opening is adjusted by the pressure of control air, and the pressure of control air is adjusted by an electro-pneumatic converter interposed in the air supply pipe. Then, the electro-pneumatic converter sets the pressure of the control air according to the current value of the electric signal output from the control device. The flow rate of the cleaning solvent when extruding the paint is set to a small flow rate equal to the flow rate of the paint supplied to the coating machine, and the resistance in the pipe changes according to the type of the paint and the remaining amount in the paint pipe. Therefore, when extruding the paint, it is necessary to finely variably control the flow rate of the cleaning solvent in accordance with this, and, on the other hand, in the cleaning process after the completion of coating,
The cleaning solvent must be delivered at the highest possible pressure to enhance the cleaning effect.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、流量制
御用レギュレータの制御エアの圧力調整を行う電−空変
換器は、制御可能な範囲が広くなれば圧力調整の精度が
低下し、精度よく圧力調整を行うことができるものは制
御可能な範囲が狭くなるので、塗料流量に応じて厳密に
流量を制御しようとすると洗浄時には大流量で洗浄溶剤
を送給することができず、洗浄時に大流量で送給できる
ようにすると、塗料を押し出す際に洗浄溶剤の流量を厳
密に制御することができないという問題があった。そこ
で、本発明は、塗料を押し出す際には小流量で供給され
る洗浄溶剤の微妙な流量制御を行うことができると同時
に、洗浄時には大流量で洗浄溶剤を送給できるようにす
ることを技術的課題としている。However, in the electro-pneumatic converter for adjusting the pressure of the control air of the flow control regulator, the accuracy of the pressure adjustment is reduced if the controllable range is widened, and the pressure is adjusted with high accuracy. Since the range that can be controlled becomes narrower, if the flow rate is strictly controlled in accordance with the flow rate of the paint, the cleaning solvent cannot be supplied at a large flow rate during cleaning, and a large flow rate cannot be supplied during cleaning. If the feeding is enabled, there is a problem that the flow rate of the cleaning solvent cannot be strictly controlled when the paint is extruded. In view of the above, the present invention provides a technique that enables fine control of the flow rate of a cleaning solvent supplied at a small flow rate when extruding a paint, and at the same time, enables the cleaning solvent to be supplied at a large flow rate during cleaning. Is a subject.
【０００５】[0005]
【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、少なくとも、塗装機に各色塗料を選択供
給する色替バルブと、洗浄溶剤を供給する洗浄溶剤バル
ブが設けられた色替バルブ装置を具備し、塗装終了前に
前記洗浄溶剤バルブから供給される洗浄溶剤で、塗装機
と色替バルブ装置とを連結する塗料配管内に残存する塗
料を押し出しながら塗装を継続して行う多色塗装装置に
おいて、制御エアの空気圧により弁開度が調整される流
量制御用レギュレータが、洗浄溶剤供給源から塗装機に
至るまでの流路に介装され、当該レギュレータの弁開度
を調整する制御エア供給系が、残存塗料による塗装を行
うときに低圧の制御エアを供給して塗料流量に応じた小
流量で洗浄溶剤を送給するように開弁する低圧制御エア
供給系と、洗浄時に高圧の制御エアを供給して塗料配管
内の洗浄に必要な大流量で洗浄溶剤を送給させるように
開弁する高圧制御エア供給系とから成ることを特徴とす
る。In order to solve this problem, the present invention provides at least a color changing valve for selectively supplying each color paint to a coating machine and a cleaning solvent valve for supplying a cleaning solvent. A painting valve is provided, and the painting is continuously performed while extruding paint remaining in a paint pipe connecting the painting machine and the color changing valve device with a washing solvent supplied from the washing solvent valve before the painting is completed. In multi-color coating equipment, a flow control regulator whose valve opening is adjusted by the air pressure of control air is interposed in the flow path from the cleaning solvent supply source to the coating machine, and adjusts the valve opening of the regulator. A low-pressure control air supply system that supplies a low-pressure control air when applying the residual paint to supply the cleaning solvent at a small flow rate according to the paint flow rate; Time Characterized in that it consists of a high-pressure control air supply system to supply the high-pressure control air is opened so as to deliver cleaning solvent in a large flow rate necessary for the cleaning of the paint pipe.
【０００６】[0006]
【作用】本発明によれば、流量制御用レギュレータの弁
開度を調整する制御エア供給系が、低圧制御エア供給系
と高圧制御エア供給系との二系統からなる。そして、低
圧制御エア供給系により供給される制御エアは圧力が低
いので、塗料配管内の残存塗料による塗装を行う際に洗
浄溶剤を送給するときは、その低圧の制御エアにより厳
密に圧力調整が行われて流量制御用レギュレータの弁開
度が微妙に調整され、洗浄溶剤が塗料流量に応じた小流
量で正確に供給される。また、高圧制御エア供給系によ
り供給される制御エアは圧力が高いので、洗浄時に塗料
配管内を洗浄するために洗浄溶剤を送給するときは、そ
の高圧の制御エアにより流量制御用レギュレータの弁が
最大開度まで開放されて、洗浄溶剤が大流量で送給され
る。According to the present invention, the control air supply system for adjusting the valve opening of the flow control regulator comprises two systems, a low pressure control air supply system and a high pressure control air supply system. Since the pressure of the control air supplied by the low-pressure control air supply system is low, when the cleaning solvent is supplied when painting with the remaining paint in the paint pipe, the pressure is strictly adjusted by the low-pressure control air. Is performed, the valve opening of the flow control regulator is finely adjusted, and the cleaning solvent is accurately supplied at a small flow rate corresponding to the paint flow rate. Also, since the control air supplied by the high-pressure control air supply system has a high pressure, when the cleaning solvent is supplied for cleaning the inside of the paint pipe at the time of cleaning, the valve of the regulator for flow control is supplied by the high-pressure control air. Is opened to the maximum opening, and the cleaning solvent is supplied at a large flow rate.
【０００７】[0007]
【実施例】以下、本発明を図面に示す実施例に基づいて
具体的に説明する。図１は本発明に係る多色塗装装置の
一例を示すフローシート、図２はそのタイミングチャー
ト、図３は他の多色塗装装置を示すフローシート、図４
はそのタイミングチャートである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on embodiments shown in the drawings. FIG. 1 is a flow sheet showing an example of the multi-color coating apparatus according to the present invention, FIG. 2 is a timing chart thereof, FIG. 3 is a flow sheet showing another multi-color coating apparatus, FIG.
Is a timing chart.
【０００８】図中１は、塗装機２に対し各色塗料を選択
供給する色替バルブＶ1 〜Ｖｎと，洗浄エアを供給する
洗浄エアバルブＶａと，洗浄溶剤を供給する洗浄溶剤バ
ルブＶｓがマニホールド３に設けられて成る色替バルブ
装置であって、当該マニホールド３と前記塗装機２が塗
料配管４を介して接続されている。各色替バルブＶ1 〜
Ｖｎは、開成した状態で塗料供給源Ｆ1 〜Ｆｎから定量
供給手段（例えば，容積型ポンプ，レギュレータ等）５
により送給された塗料をマニホールド３を介して塗装機
２に供給し、閉成した状態で当該塗料を塗料供給源Ｆ1
〜Ｆｎに還流するように成されている。In FIG. 1, reference numeral 1 denotes a manifold 3 which includes color change valves V 1 -Vn for selectively supplying each color paint to the coating machine 2, a cleaning air valve Va for supplying cleaning air, and a cleaning solvent valve Vs for supplying cleaning solvent. The manifold 3 is connected to the coating machine 2 via a paint pipe 4. Each color change valve V 1 ~
Vn is supplied from the paint supply sources F 1 to Fn in the opened state from the paint supply sources F 1 to Fn (for example, a positive displacement pump, a regulator, etc.) 5.
Is supplied to the coating machine 2 through the manifold 3 and the paint is supplied to the coating source F 1 in a closed state.
To Fn.
【０００９】また、洗浄溶剤バルブＶｓ，洗浄エアバル
ブＶａは、夫々洗浄溶剤供給源Ｆｓ，洗浄エア供給源Ｆ
ａに接続され、洗浄溶剤供給源Ｆｓから塗料配管４に合
流するまでの洗浄溶剤供給系６には、制御エアの空気圧
により弁開度が調整される流量制御用レギュレータＲが
介装されている。７は、当該レギュレータＲの弁開度を
調整して洗浄溶剤の流量を制御する制御エア供給系であ
って、低圧制御エア供給系７Ｌと高圧制御エア供給系７
Ｈの二系統からなる。The cleaning solvent valve Vs and the cleaning air valve Va are connected to a cleaning solvent supply source Fs and a cleaning air supply source F, respectively.
In the cleaning solvent supply system 6 connected to the cleaning solvent supply source Fs and joined to the paint pipe 4, a flow control regulator R whose valve opening is adjusted by the air pressure of control air is interposed. . Reference numeral 7 denotes a control air supply system for controlling the flow rate of the cleaning solvent by adjusting the valve opening of the regulator R, and includes a low-pressure control air supply system 7L and a high-pressure control air supply system 7L.
H consists of two systems.
【００１０】そして、低圧制御エア供給系７Ｌの制御エ
ア供給管８Ｌには、高圧で供給されるエアを一定の圧力
まで低下させるエアレギュレータ９と、当該エアレギュ
レータ９を通過した制御エアの圧力を制御装置１０から
出力される電気信号の電流値により調整する電−空変換
器１１が介装され、当該電−空変換器１１で圧力調整さ
れた低圧の制御エアにより流量制御用レギュレータＲの
弁開度を調整して、塗料流量に応じた小流量で洗浄溶剤
を供給できるようにように成されている。The control air supply pipe 8L of the low pressure control air supply system 7L has an air regulator 9 for reducing air supplied at a high pressure to a predetermined pressure, and a pressure of the control air which has passed through the air regulator 9. An electro-pneumatic converter 11 that adjusts according to the current value of the electric signal output from the control device 10 is interposed, and the valve of the flow control regulator R is controlled by low-pressure control air pressure-adjusted by the electro-pneumatic converter 11. The opening degree is adjusted so that the cleaning solvent can be supplied at a small flow rate corresponding to the paint flow rate.
【００１１】また、高圧制御エア供給系７Ｈの制御エア
供給管８Ｈには、高圧で供給されるエアをそのまま流量
制御用レギュレータＲに送給するソレノイドバルブ１２
が介装され、当該バルブ１２が開成されたときに高圧の
制御エアにより流量制御用レギュレータＲの弁を開放し
て、塗料配管４内を洗浄するのに必要な大流量の洗浄溶
剤を供給するように成されている。なお、１３は、制御
エア供給配管８Ｌ及び８Ｈを通って供給される制御エア
を流量制御用レギュレータＲに送給するための二入力一
出力の三方弁で形成されたチェックバルブである。A solenoid valve 12 for supplying air supplied at a high pressure to a regulator R for flow rate control is supplied to a control air supply pipe 8H of a high pressure control air supply system 7H.
When the valve 12 is opened, the valve of the flow control regulator R is opened by high-pressure control air to supply a large flow rate of a cleaning solvent necessary for cleaning the inside of the paint pipe 4. It is made as follows. Reference numeral 13 denotes a check valve formed of a two-input, one-output three-way valve for supplying control air supplied through the control air supply pipes 8L and 8H to the regulator R for flow control.
【００１２】以上が本発明の一例構成であって、次にそ
の作用について図２のタイミングチャートを伴って、色
替バルブＶ1 で供給される前色塗料から、色替バルブＶ
2 で供給される次色塗料に色替えする場合について説明
する。図２のタイミングチャート中、Ｔ0 〜Ｔ2 が前色
塗料の塗装工程、Ｔ3 〜Ｔ4が洗浄工程、Ｔ5 以降が次
色塗料の塗装工程である。[0012] The above is an example configuration of the present invention, then its action with the timing chart of FIG. 2, from the color the paint before it is supplied in the color change valve V 1, color change valve V
The case of changing the color to the next color paint supplied in 2 will be described. In the timing chart of FIG. 2, T 0 to T 2 are the painting process of the preceding color paint, T 3 to T 4 are the washing process, and T 5 and later are the painting process of the next color paint.
【００１３】まず、色替バルブＶ1 を開成して塗料供給
源Ｆ1 から定量供給される塗料を塗装機２へ送給し、塗
装機２で噴霧して前色塗料の塗装を行う（図２：Ｔ0 〜
Ｔ1）。そして、塗装終了前（図２：Ｔ1 ）に、色替バ
ルブＶ1 を閉成すると同時に洗浄溶剤バルブＶｓを開成
して、洗浄溶剤供給源Ｆｓから送給される洗浄溶剤で、
塗料配管４内に残存する塗料を押し出すことにより塗装
を継続して行う（図２：Ｔ1 〜Ｔ2 ）。[0013] First, feeding the paint to be dispensed from the coating material supply source F 1 and opens the color change valve V 1 to the atomizer 2 feeds performs painting before color paint was sprayed with atomizer 2 (FIG. 2: T 0 ~
T 1 ). Before the completion of the coating (FIG. 2: T 1 ), the color change valve V 1 is closed and the cleaning solvent valve Vs is opened at the same time, and the cleaning solvent supplied from the cleaning solvent supply source Fs is used.
The coating is continuously performed by extruding the coating remaining in the coating pipe 4 (FIG. 2: T 1 to T 2 ).
【００１４】このとき、塗料配管４内には塗料が充填さ
れており、塗料の残存量が少なくなるにつれて管内抵抗
が少なくなるので、制御装置１０から出力される電気信
号の電流値を徐々に減少させて、低圧制御エア供給系７
Ｌの電−空変換器１１を通して流量制御用レギュレータ
Ｒに供給される制御エアの圧力を徐々に低下させ、これ
により、溶剤供給圧が微妙に調整されて、塗料配管４内
に残存する塗料は一定流量で押し出される（図２：Ｔ1
〜Ｔ2 ）。At this time, since the paint is filled in the paint pipe 4 and the resistance in the pipe decreases as the remaining amount of the paint decreases, the current value of the electric signal output from the control device 10 gradually decreases. The low pressure control air supply system 7
The pressure of the control air supplied to the flow control regulator R through the electro-pneumatic converter 11 of L is gradually decreased, whereby the solvent supply pressure is finely adjusted, and the paint remaining in the paint pipe 4 is reduced. Extruded at a constant flow rate (Fig. 2: T 1
~T 2).
【００１５】このように、塗装終了直前に洗浄溶剤によ
り塗料を押し出して塗装する際に、流量制御用レギュレ
ータＲの弁開度は、低圧制御エア供給系７Ｌにより送給
される低圧の制御エアにより調整されるので、塗料の種
類や塗料配管４内に残存する塗料の量に応じて異なる管
内抵抗の微妙な変化に追従し、精度よく洗浄溶剤の供給
圧力を制御することができる。As described above, when the paint is extruded with the cleaning solvent immediately before the end of the painting, the valve opening of the regulator R for flow control is controlled by the low-pressure control air supplied from the low-pressure control air supply system 7L. Since the adjustment is performed, the supply pressure of the cleaning solvent can be accurately controlled by following a delicate change in the pipe resistance that varies depending on the type of the paint and the amount of the paint remaining in the paint pipe 4.
【００１６】次いで、塗装が終了すると、洗浄溶剤バル
ブＶｓ，洗浄エアバルブＶａを交互に開閉して塗料配管
４内を洗浄する（図２：Ｔ3 〜Ｔ4 ）。このとき、流量
制御用レギュレータＲに対して高圧制御エア供給系７Ｈ
により制御エアが供給されるので、塗料配管４内に付着
した塗料が勢いよく洗浄され（図２：Ｔ3 〜Ｔ4 ）、洗
浄が終了した後に、次色塗料の色替バルブＶ2 を開成し
て次色塗料による塗装を開始する（図２：Ｔ5 ）。Next, when the coating is completed, the cleaning solvent valve Vs and the cleaning air valve Va are alternately opened and closed to clean the inside of the coating pipe 4 (FIG. 2: T 3 to T 4 ). At this time, the high-pressure control air supply system 7H is supplied to the flow control regulator R.
Since the control air is supplied by the paint adhering to the coating material pipe 4 is vigorously washed (Fig. 2: T 3 ~T 4), after the cleaning is finished, the color change valve V 2 of the next color paint Kaisei Then, painting with the next color paint is started (FIG. 2: T 5 ).
【００１７】塗装終了後の洗浄工程においては，高圧制
御エア供給系７Ｌにより送給される高圧の制御エアによ
り流量制御用レギュレータＲの弁が最大開度まで開放さ
れ、洗浄溶剤供給源Ｆｓから塗料配管４内を洗浄するの
に十分な圧力で供給される洗浄溶剤の流れを妨げること
がないので、洗い残しがなくしかも短時間で洗浄するこ
とができる。In the cleaning process after the coating is completed, the valve of the regulator R for flow control is opened to the maximum opening degree by the high-pressure control air supplied from the high-pressure control air supply system 7L, and the paint is supplied from the cleaning solvent supply source Fs. Since the flow of the cleaning solvent supplied at a pressure sufficient to clean the inside of the pipe 4 is not hindered, the cleaning can be performed in a short time with no unwashed residue.
【００１８】なお、上記実施例においては、流量制御用
レギュレータＲを洗浄溶剤供給系６に介装した場合につ
いて説明したが、色替バルブ装置１と塗装機２を連結す
る塗料配管４に介装すれば、一つのレギュレータを設け
るだけで、塗装機２に供給される全ての塗料及び洗浄溶
剤の流量を制御できる。この場合に、塗料と洗浄溶剤の
粘度が異なるだけでなく、供給圧力も塗料と洗浄溶剤と
では一定ではないので、塗料だけが供給されるときと、
洗浄溶剤を供給して塗料を押し出すときとで、塗装機２
から吐出される塗料流量が一定に維持されるようにレギ
ュレータの制御エアを可変制御する必要がある。In the above embodiment, the case where the regulator R for controlling the flow rate is interposed in the cleaning solvent supply system 6 has been described. However, the regulator R is interposed in the paint pipe 4 connecting the color changing valve device 1 and the coating machine 2. Then, the flow rate of all the paint and the cleaning solvent supplied to the coating machine 2 can be controlled only by providing one regulator. In this case, not only the viscosity of the paint and the cleaning solvent are different, but also the supply pressure is not constant between the paint and the cleaning solvent, so when only the paint is supplied,
When the paint is extruded by supplying the cleaning solvent, the coating machine 2
It is necessary to variably control the control air of the regulator so that the flow rate of the paint discharged from the nozzle is maintained constant.
【００１９】図３は本発明に係る他の多色塗装装置を示
すフローシート，図４はそのバルブタイミングを示すタ
イミングチャートである。本例では、色替バルブ装置１
と塗装機２とを接続する塗料配管４に塗装機洗浄用バル
ブ装置２１が介装されて、塗料配管４がその塗装機２側
の配管４ａと、上流側の配管４ｂに分断されている。FIG. 3 is a flow sheet showing another multicolor coating apparatus according to the present invention, and FIG. 4 is a timing chart showing the valve timing. In this example, the color changing valve device 1
A coating machine cleaning valve device 21 is interposed in a coating pipe 4 for connecting the coating machine 2 to the coating machine 2, and the coating pipe 4 is divided into a pipe 4a on the coating machine 2 side and a pipe 4b on the upstream side.
【００２０】塗装機洗浄用バルブ装置２１には、色替バ
ルブ装置１から供給される塗料や洗浄溶剤を塗装機２又
は廃液タンク２２に送給するトリガーダンプバルブ２３
と、塗装機洗浄用の洗浄エア及び洗浄溶剤を選択供給す
る洗浄バルブ２４が形成され、洗浄バルブ２４には、洗
浄エアバルブ２５及び洗浄溶剤バルブ２６を形成したマ
ニホールド２７が接続されている。The coating machine washing valve device 21 is provided with a trigger dump valve 23 for feeding paint or a washing solvent supplied from the color changing valve device 1 to the coating machine 2 or the waste liquid tank 22.
And a cleaning valve 24 for selectively supplying a cleaning air and a cleaning solvent for coating machine cleaning. The cleaning valve 24 is connected to a manifold 27 in which a cleaning air valve 25 and a cleaning solvent valve 26 are formed.
【００２１】また、色替バルブ装置１は、色替バルブＶ
1 〜Ｖ4 ，トリガーダンプバルブ２８及び洗浄バルブ２
９を形成した主マニホールド３０と、前記トリガーダン
プバルブ２８に接続された副マニホールド３１と，前記
洗浄バルブ２９に接続された洗浄用マニホールド３２と
を備えている。そして、前記主マニホールド３０の各色
替バルブＶ1 〜Ｖ4 には、白，赤，シルバー等の使用頻
度の高い色の塗料供給源Ｆ1 〜Ｆ4 が接続されている。The color changing valve device 1 includes a color changing valve V
1 to V 4 , trigger dump valve 28 and cleaning valve 2
9 is provided with a main manifold 30, a sub-manifold 31 connected to the trigger dump valve 28, and a cleaning manifold 32 connected to the cleaning valve 29. Then, each color change valve V 1 ~V 4 of the main manifold 30, white, red, paint supply source color frequently used, such as silver F 1 to F 4 is connected.
【００２２】また、副マニホールド３１は、塗料供給源
Ｆ5 〜Ｆｎから圧送される使用頻度の少ない色の塗料を
供給する色替バルブＶ5 〜Ｖｎ，洗浄エアバルブ３３及
び洗浄溶剤バルブ３４が設けられると共に、塗料配管４
ｃを介して前記主マニホールド３０のトリガーダンプバ
ルブ２８に接続されており、トリガーダンプバルブ２８
は、前記副マニホールド３１から送給された塗料や洗浄
溶剤を、塗料配管４ｂ又は廃液タンク３５に選択送給す
るようになされている。Further, the sub-manifold 31 supplies a small paint color frequently used to be pumped from the paint supply source F 5 to Fn color changing valve V 5 to Vn, washed air valve 33 and the cleaning solvent valve 34 is provided With paint piping 4
c is connected to the trigger dump valve 28 of the main manifold 30 via the trigger dump valve 28.
The paint and cleaning solvent fed from the sub-manifold 31 are selectively fed to the paint pipe 4b or the waste liquid tank 35.
【００２３】主マニールド３０の洗浄バルブ２９に接続
された洗浄用マニホールド３２には、主マニホールド３
０及び塗料配管４ｂ内を洗浄するための洗浄エア及び洗
浄溶剤を供給する洗浄エアバルブＶａ及び洗浄溶剤バル
ブＶｓが設けられ、洗浄溶剤供給源Ｆｓから主マニホー
ルド３０に至るまでの洗浄溶剤供給系６の洗浄溶剤バル
ブＶｓの上流側に、制御エアの空気圧により弁開度が調
整される洗浄溶剤流量制御用レギュレータＲｓが介装さ
れている。A cleaning manifold 32 connected to the cleaning valve 29 of the main manifold 30 has a main manifold 3.
0 and a cleaning air valve Va and a cleaning solvent valve Vs for supplying a cleaning air and a cleaning solvent for cleaning the inside of the paint pipe 4b, and a cleaning solvent supply system 6 from the cleaning solvent supply source Fs to the main manifold 30. On the upstream side of the cleaning solvent valve Vs, a cleaning solvent flow control regulator Rs whose valve opening is adjusted by the air pressure of control air is interposed.
【００２４】また、色替バルブ装置１の主マニホールド
３０と、塗装機洗浄用バルブ装置２１とを接続する配管
４ｂに、制御エアの空気圧により弁開度が調整される塗
料流量制御用レギュレータＲｐが介装されている。した
がって、本例では、塗料流量制御用レギュレータＲｐを
塗料配管４ｂに設けたので、各色の塗料供給系ごとに定
量供給手段を設ける必要がなく、構造を簡素化すること
ができる。Further, a paint flow control regulator Rp, whose valve opening is adjusted by the air pressure of control air, is provided in a pipe 4b connecting the main manifold 30 of the color changing valve device 1 and the coating device cleaning valve device 21. It is interposed. Therefore, in this example, since the paint flow control regulator Rp is provided in the paint pipe 4b, it is not necessary to provide a quantitative supply means for each paint supply system of each color, and the structure can be simplified.
【００２５】３９は、塗料流量制御用レギュレータＲｐ
の弁開度を調整して塗料の流量を一定に維持する制御エ
ア供給系であって、低圧制御エア供給系３９Ｌと高圧制
御エア供給系３９Ｈの二系統からなる。そして、低圧制
御エア供給系３９Ｌの制御エア供給管４０Ｌには、高圧
で供給されるエアを一定の圧力まで低下させるエアレギ
ュレータ４１と、当該エアレギュレータ４１を通過した
制御エアの圧力を制御装置４２から出力される電気信号
の電流値により一定に維持する電−空変換器４３が介装
され、当該電−空変換器４３で圧力調整された低圧の制
御エアにより塗料流量制御用レギュレータＲｐの弁開度
を調整して、塗料流量を予め設定された一定の流量に維
持する。Numeral 39 denotes a paint flow control regulator Rp.
Is a control air supply system that maintains the flow rate of the paint constant by adjusting the valve opening degree, and is composed of two systems, a low pressure control air supply system 39L and a high pressure control air supply system 39H. The control air supply pipe 40L of the low-pressure control air supply system 39L has an air regulator 41 for reducing the air supplied at a high pressure to a predetermined pressure, and a control device 42 for controlling the pressure of the control air passing through the air regulator 41. An electro-pneumatic converter 43 for maintaining a constant value according to the current value of the electric signal output from the controller is interposed, and the valve of the paint flow control regulator Rp is controlled by low-pressure control air pressure-adjusted by the electro-pneumatic converter 43. The opening is adjusted to maintain the paint flow rate at a preset constant flow rate.
【００２６】また、高圧制御エア供給系３９Ｈの制御エ
ア供給管４０Ｈには、高圧で供給されるエアをそのまま
塗料流量制御用レギュレータＲｐに送給するソレノイド
バルブ４４が介装され、例えば洗浄時などに、ソレノイ
ドバルブ４３を開いて高圧の制御エアを送給することに
より塗料流量制御用レギュレータＲｐの弁を最大開度ま
で開放するように成されている。なお、４５は、制御エ
ア供給配管４０Ｌ及び４０Ｈを通って供給される制御エ
アを塗料流量制御用レギュレータＲｐに送給するための
二入力一出力の三方弁で形成されたチェックバルブであ
る。The control air supply pipe 40H of the high pressure control air supply system 39H is provided with a solenoid valve 44 for supplying air supplied at a high pressure to the paint flow rate control regulator Rp as it is. Then, by opening the solenoid valve 43 and supplying high-pressure control air, the valve of the paint flow control regulator Rp is opened to the maximum opening. Reference numeral 45 denotes a check valve formed of a two-input one-output three-way valve for supplying control air supplied through the control air supply pipes 40L and 40H to the paint flow control regulator Rp.
【００２７】洗浄溶剤流量制御用レギュレータＲｓの弁
開度を調整する制御エア供給系７は、図１に示した前記
実施例と同様に、低圧制御エア供給系７Ｌと高圧制御エ
ア供給系７Ｈの二系統からなり、低圧制御エア供給管８
Ｌには、高圧で供給されるエアを一定の圧力まで低下さ
せるエアレギュレータ９と、制御装置１０から出力され
る電気信号の電流値によりエア圧を調整する電−空変換
器１１が介装され、高圧制御エア供給管８Ｈには、高圧
で供給されるエアをそのまま洗浄溶剤流量制御用レギュ
レータＲｓに送給するソレノイドバルブ１２が介装さ
れ、各制御エア供給管８Ｌ及び８Ｈがチェックバルブ１
３を介して当該レギュレータＲｓに接続されている。The control air supply system 7 for adjusting the valve opening of the regulator Rs for controlling the flow rate of the cleaning solvent is provided with a low-pressure control air supply system 7L and a high-pressure control air supply system 7H, similarly to the embodiment shown in FIG. Low pressure control air supply pipe 8
In L, an air regulator 9 for lowering the air supplied at a high pressure to a certain pressure and an electro-pneumatic converter 11 for adjusting the air pressure by the current value of the electric signal output from the control device 10 are provided. The high pressure control air supply pipe 8H is provided with a solenoid valve 12 for supplying air supplied at a high pressure to the cleaning solvent flow control regulator Rs as it is, and the control air supply pipes 8L and 8H are connected to the check valve 1H.
3 is connected to the regulator Rs.
【００２８】次に、この多色塗装装置を動作を図４に示
すタイミングチャートを使用し、主マニホールド３０の
色替バルブＶ1 で供給される前色塗料から、色替バルブ
Ｖ2で供給される次色塗料に色替えする場合を例にとっ
て説明する。図４に示すタイミングチャートにおいて、
Ｔ0 〜Ｔ2 が前色塗料の塗装工程、Ｔ2 〜Ｔ5 が洗浄工
程、Ｔ5 以降が次色塗料の塗装工程である。Next, the operation of this multi-color coating apparatus will be described with reference to the timing chart shown in FIG. 4, and the pre-color paint supplied by the color change valve V 1 of the main manifold 30 is supplied by the color change valve V 2. A case in which the color is changed to the next color paint will be described as an example. In the timing chart shown in FIG.
T 0 through T 2 is the step of pre-painting color paints, T 2 through T 5 washing step, T 5 or later is painting process-color paint.
【００２９】まず、主マニホールド３０の色替バルブＶ
1 を開放すると、前色塗料が所定の圧力で送給される。
このとき、塗料流量制御用レギュレータＲｐに対し、低
圧制御エア供給系３９Ｌにより塗料の種類に応じた所定
の圧力に調整された制御エアが送給されて、弁開度が調
整されており、また、塗装機洗浄用バルブ装置２１のト
リガーダンプバルブ２３が開成されて、配管４ａ及び４
ｂを導通状態に維持しているので、塗料が一定流量で塗
装機２へ供給されて塗装が行われる（図４：Ｔ0 〜
Ｔ1 ）。First, the color change valve V of the main manifold 30
When 1 is opened, the front color paint is fed at a predetermined pressure.
At this time, the control air adjusted to a predetermined pressure corresponding to the type of the paint is supplied to the paint flow control regulator Rp by the low-pressure control air supply system 39L to adjust the valve opening degree. When the trigger dump valve 23 of the valve device 21 for cleaning the coating machine is opened, the pipes 4a and 4
Since b is maintained in a conductive state, the coating material is supplied to the coating machine 2 at a constant flow rate to perform coating (FIG. 4: T 0-
T 1 ).
【００３０】次いで、塗装終了前に前記色替バルブＶ1
を閉じ、洗浄用マニホールド３２の洗浄溶剤バルブＶｓ
を開いて洗浄溶剤の送給を開始し、塗料配管４内に残存
する塗料を洗浄溶剤で押し出しながら塗装を行う（図
４：Ｔ1 〜Ｔ2 ）。このとき、塗料流量制御用レギュレ
ータＲｐの制御エアを一定に維持した状態で、洗浄溶剤
流量制御用レギュレータＲｓに対して、低圧制御エア供
給系７Ｌから電−空変換器１１を通る低圧制御エアが徐
々に低圧になるように供給し、塗料配管４内の流体抵抗
の変化に応じて塗料を一定流量で押し出す。Next, before the end of the coating, the color change valve V 1
Is closed, and the cleaning solvent valve Vs of the cleaning manifold 32 is closed.
Is opened to start feeding the cleaning solvent, and the coating is performed while extruding the paint remaining in the coating pipe 4 with the cleaning solvent (FIG. 4: T 1 to T 2 ). At this time, while the control air of the paint flow control regulator Rp is maintained constant, the low-pressure control air passing through the electro-pneumatic converter 11 from the low-pressure control air supply system 7L is supplied to the cleaning solvent flow control regulator Rs. The paint is supplied at a gradually lower pressure, and the paint is extruded at a constant flow rate according to the change in the fluid resistance in the paint pipe 4.
【００３１】そして、塗装が終了すると、塗装機洗浄用
バルブ装置２１のトリガーダンプバルブ２３を閉じ、色
替バルブ装置１の洗浄用マニホールド３２のエア供給バ
ルブＶａと洗浄洗浄溶剤バルブＶｓを交互に開閉してエ
アと洗浄溶剤を交互に供給して、塗料配管４ｂ内に残存
する塗料を洗浄溶剤と共に廃液タンク２２に排出するこ
とにより塗料配管４ｂ内の洗浄を行う（図４：Ｔ2 〜Ｔ
3 ）。このとき、洗浄溶剤流量制御用レギュレータＲｓ
及び塗料流量制御用レギュレータＲｐに対して夫々高圧
制御エア供給系７Ｈ及び３９Ｈにより高圧の制御エアが
供給され、各レギュレータＲｓ，Ｒｐの弁が最大開度ま
で開放されるので、塗料配管４ｂ内に洗浄溶剤を大流量
で送給することができ、短時間で残存塗料を排出するこ
とができる。Then, when the coating is completed, the trigger dump valve 23 of the coating machine cleaning valve device 21 is closed, and the air supply valve Va and the cleaning solvent valve Vs of the cleaning manifold 32 of the color changing valve device 1 are alternately opened and closed. Then, air and the cleaning solvent are alternately supplied, and the paint remaining in the coating pipe 4b is discharged to the waste liquid tank 22 together with the cleaning solvent, thereby cleaning the coating pipe 4b (FIG. 4: T 2 to T 2) .
3 ). At this time, the regulator Rs for controlling the flow rate of the cleaning solvent is used.
High-pressure control air is supplied to the paint flow control regulator Rp by the high-pressure control air supply systems 7H and 39H, respectively, and the valves of the regulators Rs and Rp are opened to the maximum opening degree. The cleaning solvent can be fed at a large flow rate, and the remaining paint can be discharged in a short time.
【００３２】次いで、塗装機洗浄用バルブ装置２１に開
口するトリガーダンプバルブ２３の弁座付近に付着する
塗料を洗浄するために、当該トリガーダンプバルブ２３
を開いて前記洗浄用マニホールド３２から送給される洗
浄溶剤を塗料配管４ａ内に流し込む（図４：Ｔ3 〜
Ｔ4 ）。そして、再びトリガーダンプバルブ２３を閉成
して、今度は洗浄バルブ２４を開成し、洗浄用マニホー
ルド２７の洗浄エアバルブ２５及び洗浄溶剤バルブ２６
を交互に開閉することにより、塗料配管４ａ内に残存す
る塗料を塗装機２から噴射させて塗料配管４ａ及び塗装
機２内を洗浄する（図４：Ｔ4 〜Ｔ5 ）。このようにし
て、洗浄工程（図４：Ｔ2 〜Ｔ5 ）を終了した時点で、
色替バルブＶ2 を開放して次色塗料による塗装を開始す
る（図４：Ｔ5 以降）。Next, in order to wash the paint adhering in the vicinity of the valve seat of the trigger dump valve 23 which opens to the coating machine washing valve device 21, the trigger dump valve 23 is used.
To flow the cleaning solvent supplied from the cleaning manifold 32 into the paint pipe 4a (FIG. 4: T 3-
T 4). Then, the trigger dump valve 23 is closed again, the cleaning valve 24 is opened this time, and the cleaning air valve 25 and the cleaning solvent valve 26 of the cleaning manifold 27 are opened.
The by opening and closing alternately the paint remaining in the paint pipe 4a by injection from the atomizer 2 to clean the paint pipe 4a and the atomizer 2 (Figure 4: T 4 ~T 5). In this way, when the washing step (FIG. 4: T 2 to T 5 ) is completed,
Color changing by opening the valve V 2 starts Application by-color paint (Figure 4: T 5 or later).
【００３３】なお、前色塗料として副マニホールド３１
から供給される塗料を使用した場合には、洗浄用マニホ
ールド３２から供給される洗浄溶剤で塗料配管４ｂ内に
残存する塗料を押し出して塗装すると同時に、トリガー
ダンプバルブ２８を閉じて副マニホールド３１の洗浄エ
アバルブ３３及び洗浄溶剤バルブ３４を交互に開閉して
塗料配管４ｃ内の塗料を廃液タンク３５内に排出すれよ
うにすればよい。The sub-manifold 31 is used as a front color paint.
When the paint supplied from the cleaning manifold 32 is used, the paint remaining in the paint pipe 4b is extruded with the cleaning solvent supplied from the cleaning manifold 32, and at the same time, the trigger dump valve 28 is closed to wash the sub-manifold 31. The paint in the paint pipe 4c may be discharged into the waste tank 35 by alternately opening and closing the air valve 33 and the cleaning solvent valve 34.
【００３４】また、副マニホールド３１に形成された洗
浄溶剤バルブ３４に接続された洗浄溶剤供給配管３６に
も、洗浄溶剤流量制御用レギュレータＲｓを設け、その
制御エア供給系として、塗装終了直前に塗料流量に応じ
た小流量で洗浄溶剤を供給できるように弁開度を調整す
る低圧制御エア供給系と、洗浄時に塗料配管内を洗浄す
るのに必要な大流量の洗浄溶剤を供給できるように弁を
開放する高圧制御エア供給系との二系統を形成してもよ
い。The cleaning solvent supply pipe 36 connected to the cleaning solvent valve 34 formed in the sub-manifold 31 is also provided with a cleaning solvent flow rate control regulator Rs. A low-pressure control air supply system that adjusts the valve opening so that the cleaning solvent can be supplied at a small flow rate according to the flow rate, and a valve that can supply a large flow rate of the cleaning solvent required to clean the paint pipe during cleaning. And a high-pressure control air supply system that opens the system.
【００３５】さらに、洗浄溶剤流量制御用レギュレータ
Ｒｓは、洗浄溶剤供給源Ｆｓから主マニホールド３０に
至るまでの洗浄溶剤供給系６の洗浄溶剤バルブＶｓの上
流側に介装する場合に限らず、洗浄溶剤と洗浄エアが送
給される洗浄溶剤バルブＶｓの下流側に設ける場合であ
ってもよい。Further, the regulator Rs for controlling the flow rate of the cleaning solvent is not limited to the case where the regulator is provided upstream of the cleaning solvent valve Vs of the cleaning solvent supply system 6 from the cleaning solvent supply source Fs to the main manifold 30. It may be the case that the cleaning solvent valve is provided downstream of the cleaning solvent valve Vs to which the solvent and the cleaning air are supplied.
【００３６】[0036]
【発明の効果】以上述べたように、本発明によれば、洗
浄溶剤の流量制御用レギュレータの弁開度を調整する制
御エア供給系として、低圧制御エア供給系と高圧制御エ
ア供給系との二系統が形成され、塗装終了直前に塗料を
押し出す際に必要な小流量での溶剤流量制御を低圧制御
エア供給系により正確に行い、洗浄時に塗料配管内を洗
浄する際に必要な大流量での溶剤流量制御を高圧制御手
段により行っているので、小流量での流量制御の厳密さ
と、大流量で送給できるという制御範囲の広さの双方を
満足することができ、色替時に塗料を一定流量で押し出
すことができると同時に、洗浄時間を短縮することがで
きるという非常に優れた効果を有する。As described above, according to the present invention, a low-pressure control air supply system and a high-pressure control air supply system are used as a control air supply system for adjusting the valve opening of the regulator for controlling the flow rate of the cleaning solvent. Two systems are formed, and the low-pressure control air supply system accurately controls the solvent flow rate at the small flow rate required when extruding paint immediately before the end of painting, and at the large flow rate required when cleaning the paint pipe during cleaning. Solvent flow control is performed by high-pressure control means, so that both the strictness of flow control at a small flow rate and the wide control range of being able to feed at a large flow rate can be satisfied. This has a very excellent effect that it can be extruded at a constant flow rate and at the same time can shorten the cleaning time.
【図１】本発明に係る多色塗装装置を示すフローシー
ト。FIG. 1 is a flow sheet showing a multicolor coating apparatus according to the present invention.
【図２】そのバルブの開閉タイミングを示すタイミング
チャート。FIG. 2 is a timing chart showing the opening / closing timing of the valve.
【図３】本発明に係る他の多色塗装装置を示すフローシ
ート。FIG. 3 is a flow sheet showing another multicolor coating apparatus according to the present invention.
【図４】そのバルブの開閉タイミングを示すタイミング
チャート。FIG. 4 is a timing chart showing the opening / closing timing of the valve.
１・・・・色替バルブ装置 ２・・・・塗装機 ４・・・・塗料配管 Ｖ1 〜Ｖｎ・・・色替バルブ Ｖｓ・・・洗浄溶剤バルブ Ｆｓ・・・洗浄溶剤供給源 Ｒ・・・・流量制御用レギュレータ Ｒｓ・・・溶剤流量制御用レギュレータ Ｒｐ・・・塗料流量制御用レギュレータ ６・・・・洗浄溶剤供給系 ７・・・・制御エア供給系 ７Ｌ・・・低圧制御エア供給系 ７Ｈ・・・高圧制御エア供給系 ２１・・・・塗装機洗浄用バルブ装置 ２２・・・・廃液タンク ２３・・・・トリガーダンプバルブ ２５・・・・洗浄エアバルブ ２６・・・・洗浄溶剤バルブ ３９・・・・制御エア供給系 ３９Ｌ・・・低圧制御エア供給系 ３９Ｈ・・・高圧制御エア供給系1 ··· Color change valve device 2 ··· Coating machine 4 ··· Paint piping V 1 to Vn ··· Color change valve Vs ··· Cleaning solvent valve Fs ··· Cleaning solvent supply source R. ... Regulator for flow rate control Rs ... Regulator for flow rate control of solvent Rp ... Regulator for flow rate control of paint 6 ...... Supply solvent supply system 7 ... Control air supply system 7L ... Low pressure control air Supply system 7H: High-pressure control air supply system 21: Valve device for coating machine cleaning 22: Waste liquid tank 23: Trigger dump valve 25: Cleaning air valve 26: Cleaning Solvent valve 39 Control air supply system 39L Low pressure control air supply system 39H High pressure control air supply system
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉 末 隆 敏 愛知県豊田市柿本町一丁目９番地 トリ ニティ工業株式会社内 (72)発明者 大 石 省 吾 愛知県豊田市トヨタ町１番地 トヨタ自 動車株式会社内 (56)参考文献 特開 昭64−80463（ＪＰ，Ａ) 実開 平３−86067（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B05B 12/14 B05D 1/02 - 1/14 B05D 3/00 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takatoshi Yoshisue 1-9-9 Kakimotocho, Toyota City, Aichi Prefecture Inside Trinity Industry Co., Ltd. (72) Inventor Shogo Oishi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota (56) References JP-A-64-80463 (JP, A) JP-A-3-86067 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B05B 12 / 14 B05D 1/02-1/14 B05D 3/00
Claims (3)
選択供給する色替バルブ (V1〜Vn）と、洗浄溶剤を供給
する洗浄溶剤バルブ（Vs）が設けられた色替バルブ装置
（１）を具備し、塗装終了前に前記洗浄溶剤バルブ（V
s）から供給される洗浄溶剤で、塗装機（２）と色替バ
ルブ装置（１）とを連結する塗料配管（４）内に残存す
る塗料を押し出しながら塗装を継続して行う多色塗装装
置において、制御エアの空気圧により弁開度が調整され
る流量制御用レギュレータ（Ｒ）が、洗浄溶剤供給源
（Fs) から塗装機（２）に至るまでの流路に介装され、
当該レギュレータ（Ｒ）の弁開度を調整する制御エア供
給系（７）が、残存塗料による塗装を行うときに低圧の
制御エアを供給して塗料流量に応じた小流量で洗浄溶剤
を送給するように開弁する低圧制御エア供給系（7L）
と、洗浄時に高圧の制御エアを供給して塗料配管（４）
内の洗浄に必要な大流量で洗浄溶剤を送給させるように
開弁する高圧制御エア供給系（7H）とから成ることを特
徴とする多色塗装装置。1. A least, coating machine selectively supplying color change valves each color paint (2) (V 1 to Vn), color change valve device which cleaning solvent valve (Vs) is provided for supplying a cleaning solvent ( 1) and the cleaning solvent valve (V
s) A multi-color coating apparatus for continuously performing coating while extruding the remaining paint in the coating pipe (4) connecting the coating machine (2) and the color changing valve device (1) with the cleaning solvent supplied from the s). In the above, a flow control regulator (R) whose valve opening is adjusted by the air pressure of the control air is interposed in a flow path from the cleaning solvent supply source (Fs) to the coating machine (2),
A control air supply system (7) for adjusting the valve opening of the regulator (R) supplies a low-pressure control air when applying the remaining paint to supply the cleaning solvent at a small flow rate according to the paint flow rate. Low pressure control air supply system (7L)
Supply high-pressure control air at the time of cleaning and paint piping (4)
A multi-color coating apparatus comprising: a high-pressure control air supply system (7H) that opens to supply a cleaning solvent at a large flow rate necessary for cleaning the inside.
洗浄溶剤供給源（Fs) から塗料配管（４）に合流するま
での洗浄溶剤供給系（６）に介装されて成る前記請求項
１記載の多色塗装装置。2. The flow control regulator (R),
2. The multicolor coating apparatus according to claim 1, wherein the multicolor coating apparatus is provided in a cleaning solvent supply system (6) from the cleaning solvent supply source (Fs) to a point where it joins the paint pipe (4).
選択供給する色替バルブ (V1〜Vn）と、洗浄溶剤を供給
する洗浄溶剤バルブ（Vs）が設けられた色替バルブ装置
（１）を具備し、塗装終了前に前記洗浄溶剤バルブ（V
s）から供給される洗浄溶剤で、塗装機（２）と色替バ
ルブ装置（１）とを連結する塗料配管（４）内に残存す
る塗料を押し出しながら塗装を継続して行う多色塗装装
置において、前記塗料配管（４）には、前記色替バルブ
装置（１）から供給される塗料や洗浄溶剤を塗装機
（２）又は廃液タンク（22）に送給するトリガーダンプ
バルブ（23）と、塗装機洗浄用の洗浄エアを供給するエ
ア供給バルブ（25）及び洗浄溶剤を供給する洗浄溶剤バ
ルブ（26）が形成された塗装機洗浄用バルブ装置（21）
と、制御エアの空気圧により弁開度が調整される塗料流
量制御用レギュレータ（Rp）が介装され、洗浄溶剤供給
源（Fs) から塗料配管（４）に合流するまでの洗浄溶剤
供給系（６）に、制御エアの空気圧により弁開度が調整
される溶剤流量制御用レギュレータ（Rs) が介装され、
前記塗料流量制御用レギュレータ（Rp）の制御エア供給
系（39）が、塗装時に低圧の制御エアを供給して塗料流
量が一定に維持されるように開弁する低圧制御エア供給
系（39L)と、洗浄時に高圧の制御エアを供給して大流量
の洗浄溶剤を送給させるように開弁する高圧制御エア供
給系（39H)とから成り、前記溶剤流量制御用レギュレー
タ（Rs) の制御エア供給系（７）が、残存塗料による塗
装を行うときに低圧の制御エアを供給して塗料流量に応
じた小流量で洗浄溶剤を送給するように開弁する低圧制
御エア供給系（7L）と、洗浄時に高圧の制御エアを供給
して塗料配管（４）内の洗浄に必要な大流量で洗浄溶剤
を送給させるように開弁する高圧制御エア供給系（7H）
とから成ることを特徴とする多色塗装装置。Wherein at least a coating machine and selects and supplies the color change valve each color paint (2) (V 1 ~Vn) , color change valve device which cleaning solvent valve (Vs) is provided for supplying a cleaning solvent ( 1) and the cleaning solvent valve (V
s) A multi-color coating apparatus for continuously performing coating while extruding the remaining paint in the coating pipe (4) connecting the coating machine (2) and the color changing valve device (1) with the cleaning solvent supplied from the s). In the paint pipe (4), a trigger dump valve (23) for feeding paint or a cleaning solvent supplied from the color changing valve device (1) to a coating machine (2) or a waste liquid tank (22) is provided. A valve device for cleaning a coating machine (21) in which an air supply valve (25) for supplying cleaning air for cleaning a coating machine and a cleaning solvent valve (26) for supplying a cleaning solvent are formed.
And a paint flow control regulator (Rp) whose valve opening is adjusted by the air pressure of the control air is interposed, and a cleaning solvent supply system (Fs) from the cleaning solvent supply source (Fs) to the paint pipe (4). 6), a solvent flow control regulator (Rs) for adjusting the valve opening by the air pressure of the control air is interposed,
The control air supply system (39) of the paint flow control regulator (Rp) supplies a low-pressure control air at the time of painting to open the valve so that the paint flow is kept constant. And a high-pressure control air supply system (39H) for supplying high-pressure control air at the time of cleaning to feed a large flow of the cleaning solvent. The control air of the solvent flow control regulator (Rs) is provided. A low-pressure control air supply system (7L) that supplies low-pressure control air when the supply system (7) performs coating with the remaining paint and opens the valve so as to supply the cleaning solvent at a small flow rate corresponding to the paint flow rate. And a high-pressure control air supply system (7H) that supplies high-pressure control air at the time of cleaning to open the cleaning solvent at a large flow rate required for cleaning the paint pipe (4).
And a multicolor coating apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06014994A JP3117109B2 (en) | 1994-02-09 | 1994-02-09 | Multicolor coating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06014994A JP3117109B2 (en) | 1994-02-09 | 1994-02-09 | Multicolor coating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07213964A JPH07213964A (en) | 1995-08-15 |
| JP3117109B2 true JP3117109B2 (en) | 2000-12-11 |
Family
ID=11876494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06014994A Expired - Fee Related JP3117109B2 (en) | 1994-02-09 | 1994-02-09 | Multicolor coating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3117109B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009023522A1 (en) * | 2007-08-10 | 2009-02-19 | Fanuc Robotics America, Inc. | Improved robotic apparatus and method for painting |
-
1994
- 1994-02-09 JP JP06014994A patent/JP3117109B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07213964A (en) | 1995-08-15 |
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