JPS5850140B2 - Quantitative spray coating equipment゜ - Google Patents
Quantitative spray coating equipment゜Info
- Publication number
- JPS5850140B2 JPS5850140B2 JP10153277A JP10153277A JPS5850140B2 JP S5850140 B2 JPS5850140 B2 JP S5850140B2 JP 10153277 A JP10153277 A JP 10153277A JP 10153277 A JP10153277 A JP 10153277A JP S5850140 B2 JPS5850140 B2 JP S5850140B2
- Authority
- JP
- Japan
- Prior art keywords
- paint
- spray gun
- amount
- spray
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Nozzles (AREA)
Description
【発明の詳細な説明】 本発明は、定量噴出を得るための塗装装置に関する。[Detailed description of the invention] The present invention relates to a coating device for obtaining a metered jet.
一般に塗装にかいては、均一な塗面を要求されるため塗
装装置によって噴霧される塗料は常に定量であることが
望ましい。Generally, when painting, a uniform coated surface is required, so it is desirable that a constant amount of paint be sprayed by a painting device.
特に透明な塗料、メタリック塗料等の場合は膜厚のわず
かな差が塗装ムラとなって現われるため、正確な噴出量
が要求される。Particularly in the case of transparent paints, metallic paints, etc., a slight difference in film thickness will result in uneven coating, so an accurate amount of spray is required.
このため塗装装置の塗料供給は塗料加圧タンク又は塗料
減圧弁等により一定圧力で塗料を圧送したり、定量吐出
用のトロコイドポンプを使用したりしているが、前者の
場合、塗料加圧タンクへの加圧力、あるいは塗料減圧弁
による吐出側圧力によって噴出量を制御しているため、
塗料粘度の変化が噴出量の変化となって現われ、定量噴
出を維持することはむずかしい。For this reason, paint is supplied to painting equipment by pumping the paint at a constant pressure using a paint pressure tank or paint pressure reducing valve, or by using a trochoid pump for fixed-quantity discharge. The amount of ejection is controlled by the pressure applied to the paint or the pressure on the discharge side by the paint pressure reducing valve.
Changes in paint viscosity result in changes in the amount of paint ejected, making it difficult to maintain a constant amount of ejection.
又後者の場合、スプレーガンが連続噴出している場合は
定量となるが、通常は、塗装作業が断続と々るため閉止
時に吐出圧力が高くなり再開日時噴出量が増大し、バラ
ツキが生じる。In the latter case, if the spray gun is ejecting continuously, the amount will be constant, but normally, because the painting operation is intermittent, the ejection pressure increases when the spray gun is closed, increasing the amount of ejection at the restart date and time, and causing variations.
この場合バラツキを防ぐため一定圧力で排出させ、吐出
圧力を一定に保つリリーフ弁を用いて定量噴霧をはかつ
ているが、やはり塗料粘度の変化等により噴出量の定量
維持はむずかしい。In this case, in order to prevent variations, the discharge is performed at a constant pressure, and a relief valve is used to maintain the discharge pressure at a constant rate to spray a constant amount, but it is still difficult to maintain a constant amount of spray due to changes in paint viscosity.
本発明は、このような従来の欠点に鑑みなされたもので
、塗料粘度等の変化にもかかわらず、又スプレーガンが
断続噴射した場合においても常に安定した噴出量を得ら
れる塗装装置を提供するものである。The present invention has been made in view of these conventional drawbacks, and it is an object of the present invention to provide a coating device that can always obtain a stable spray amount despite changes in paint viscosity, etc., and even when a spray gun performs intermittent spraying. It is something.
本発明の一実施例を図面により説明すると、定量吐出の
トロコイドポンプ１、スプレーガン２、バルブ３、塗料
タンク４を有し、ポンプ１とスプレーガンの塗料供給口
２ａを供給管５で、該塗料供給口２ａとバルブ３を戻し
管６でそれぞれ接続し、バルブ３の出口３ａは塗料タン
ク４に連通している。One embodiment of the present invention will be described with reference to the drawings. It has a trochoid pump 1 for constant discharge, a spray gun 2, a valve 3, and a paint tank 4. The paint supply port 2a and the valve 3 are connected by a return pipe 6, and the outlet 3a of the valve 3 communicates with the paint tank 4.
スプレーガン２とバルブ３とは同一の噴出量が得られる
よう構成され、且ついずれか一方が開口している時は、
他方が閉止するよう制御される。The spray gun 2 and the valve 3 are configured to obtain the same amount of spray, and when either one is open,
The other is controlled to close.
これらの制御は公知の切換バルブを利用して行うことが
できるので詳細は省略する。These controls can be performed using a known switching valve, so details will be omitted.
以上の構成により、スプレーガン２が開口している時は
、バルブ３が閉じてかり、ポンプ１より吐出された塗料
は、確実にスプレーガン２より定量噴出し、次にスプレ
ーガン２が閉止し、塗料噴出を停止すると同時に、切換
バルブによりバルブ３が開口するため、ポンプ１より吐
出された塗料は、供給管５、戻し管６よりバルブ３を通
って、ｉスプレーガン２より噴出された塗料と同一の噴
出量が再び塗料タンク４に戻される。With the above configuration, when the spray gun 2 is open, the valve 3 is closed, and the paint discharged from the pump 1 is reliably ejected from the spray gun 2 in a fixed amount, and then the spray gun 2 is closed. At the same time as stopping the spraying of paint, the valve 3 is opened by the switching valve, so the paint discharged from the pump 1 passes through the valve 3 through the supply pipe 5 and the return pipe 6, and is then transferred to the paint jetted from the i-spray gun 2. The same amount of ejection is returned to the paint tank 4 again.
従って供給管５より塗料供給口２ａＫ向かう塗料は、常
に定量が流れており、供給管５内の圧力変動もないため
、従来、スプレーガンの閉止時に吐出量が高くなり再開
日時噴出量が増大するという噴出量のバラツキがない。Therefore, a fixed amount of paint is always flowing from the supply pipe 5 toward the paint supply port 2aK, and there is no pressure fluctuation in the supply pipe 5, so conventionally, when the spray gun is closed, the discharge amount increases and the restart date and time spray amount increases. There is no variation in the amount of ejection.
これは、ポンプからの供給量がスプレーガンより塗料を
噴出しているときでも、或いはしていないときでも常に
一定になるという本発明の構成により成り立っているも
のである。This is achieved by the structure of the present invention in which the amount supplied from the pump is always constant even when paint is being ejected from the spray gun or when it is not.
本発明によれば、スプレーガンの断続噴射、塗料粘度変
化等による噴出量のバラツキが解消され、常に安定した
噴出量で塗装ができ、好適な塗膜性能を得ることができ
る。According to the present invention, variations in spray amount due to intermittent spraying from a spray gun, changes in paint viscosity, etc. are eliminated, coating can always be performed with a stable spray amount, and suitable coating film performance can be obtained.
又ポンプ自体も常に一定の負荷運転がなされ、性能が安
定し、耐久性を損うことがない。Furthermore, the pump itself is always operated under a constant load, so its performance is stable and its durability is not compromised.
図面は本発明の実施例を示す系統図、
１・・・・・・ポンプ、２・・・・・・スプレーガン、
３・・・・・・パルプ、４・・・・・・塗料タンク、６
・・・・・・戻り管。The drawings are system diagrams showing embodiments of the present invention, 1...pump, 2...spray gun,
3...Pulp, 4...Paint tank, 6
...Return pipe.
Claims (1)
る塗装装置にかいて、スプレーガンの塗料供給口に戻り
管を設け、該戻り管の途中にスプレーガンと同一噴出量
の得られるバルブを設は前記スプレーガンもしくはバル
ブのいずれか一方が開口しているときは、他方が閉止す
るよう制御してなる定量噴霧塗装装置。1. For painting equipment that sends paint using a metering pump and sprays it from a spray gun, install a return pipe at the paint supply port of the spray gun, and install a valve in the middle of the return pipe that can obtain the same amount of spray as the spray gun. The quantitative spray coating device is controlled so that when either the spray gun or the valve is open, the other is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10153277A JPS5850140B2 (en) | 1977-08-26 | 1977-08-26 | Quantitative spray coating equipment゜ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10153277A JPS5850140B2 (en) | 1977-08-26 | 1977-08-26 | Quantitative spray coating equipment゜ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5436351A JPS5436351A (en) | 1979-03-17 |
| JPS5850140B2 true JPS5850140B2 (en) | 1983-11-09 |
Family
ID=14303056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10153277A Expired JPS5850140B2 (en) | 1977-08-26 | 1977-08-26 | Quantitative spray coating equipment゜ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850140B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4377153B2 (en) * | 2003-05-09 | 2009-12-02 | 武蔵エンジニアリング株式会社 | Circulating liquid material discharge device |
| JP4555637B2 (en) * | 2004-09-02 | 2010-10-06 | 日鉄住金鋼板株式会社 | Manufacturing method of painted board |
-
1977
- 1977-08-26 JP JP10153277A patent/JPS5850140B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5436351A (en) | 1979-03-17 |
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