JPH0342063A - Stop valve for coating in coating device - Google Patents
Stop valve for coating in coating deviceInfo
- Publication number
- JPH0342063A JPH0342063A JP17766789A JP17766789A JPH0342063A JP H0342063 A JPH0342063 A JP H0342063A JP 17766789 A JP17766789 A JP 17766789A JP 17766789 A JP17766789 A JP 17766789A JP H0342063 A JPH0342063 A JP H0342063A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- paint
- inflow chamber
- valve
- guide hole
- 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.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 title claims abstract 7
- 238000000576 coating method Methods 0.000 title claims abstract 7
- 239000003973 paint Substances 0.000 claims description 57
- 238000010422 painting Methods 0.000 claims description 5
- 239000002904 solvent Substances 0.000 abstract description 14
- 230000008602 contraction Effects 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 6
- 239000003086 colorant Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Nozzles (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、塗料供給源に連通ずる流入室と塗料の吐出口
に連通ずる流出室との間に形成した弁口を流入室側から
の接離により開閉する弁体を、案内孔内に嵌装したブ「
杆の流入室内への突出端に固着し、案内孔の流入室への
開口の近傍位置と弁杆の流入室への突出部外周とに両端
を固着した伸縮可能なベローズにより、流入室内の塗料
の案内孔内への侵入を防止するようにした塗装装置の塗
料開閉弁に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a valve opening formed between an inflow chamber communicating with a paint supply source and an outflow chamber communicating with a paint discharge port, which can be connected to and separated from the inflow chamber side. The valve body, which opens and closes with
The paint inside the inflow chamber is fixed to the protruding end of the rod into the inflow chamber, and the extensible bellows are fixed at both ends near the opening of the guide hole to the inflow chamber and to the outer periphery of the protrusion of the valve rod into the inflow chamber. The present invention relates to a paint opening/closing valve for a painting device that prevents paint from entering into a guide hole.
従来の技術及び発明が解決しようとする問題点上記のよ
うな塗装装置の塗料開閉弁のベローズは、従来、その伸
縮にともなって広狭する外周の討が、ベローズの長さ方
向に連なる互いに独立した複数条の溝から構成されてい
たため、溶剤を用いてベローズの外周に付着した塗料の
洗浄を行う際には、溶剤を満に沿って流動させても詩の
奥に入り込んだ塗料を除去するのは難しく、洗浄に長い
時間と多量の溶剤が必要となるという欠点があり、また
、時間と溶剤を多く費やしても塗料を完全に除去するこ
とができず、このため、色の異なる複数の塗料を用いて
色替えを行うときに、洗浄後も除去されずに溝内に残っ
た塗料が洗浄後に供姶される他の塗料中に混じるという
問題や、骨材を混入した塗料を用いたときに、その骨材
がＭ内に溜まることによってベローズの収縮する時のス
トロークが短くなり、開弁時の弁口の開度が小さくなっ
て塗料が流動し難くなるという問題があった。Problems to be Solved by the Prior Art and the Invention Conventionally, the bellows of the paint opening/closing valve of the painting equipment as described above has a circumference that widens and narrows as the bellows expands and contracts. Since the bellows was composed of multiple grooves, when cleaning the paint that had adhered to the outer circumference of the bellows using a solvent, it was difficult to remove the paint that had penetrated deep into the bellows even if the solvent was flowed along the entire circumference. The disadvantage is that it is difficult to clean, requires a long time and a large amount of solvent to clean, and even if a lot of time and solvent are spent, the paint cannot be completely removed. When changing colors using a paint, there are problems such as paint remaining in the grooves even after cleaning and mixing with other paints supplied after cleaning, or when using paint containing aggregate. Another problem is that as the aggregate accumulates in M, the stroke when the bellows contracts becomes shorter, and the opening degree of the valve opening becomes smaller when the valve is opened, making it difficult for the paint to flow.
問題点を解決するための手段
本発明は、上記問題点を解決するための手段として、ベ
ローズを、そのベローズの伸縮にともなって広狭する外
周の溝が螺旋状をなす形状に成形した構成とした。Means for Solving the Problems As a means for solving the above-mentioned problems, the present invention has a structure in which a bellows is formed into a spiral shape with a groove on the outer periphery that widens and narrows as the bellows expands and contracts. .
発明の作用及び効果
本発明は」二足構成になり、ベローズ外周の洗浄を行う
際に（よ、その外周の溝に沿って溶剤を流動させると、
ｊ／ｌ内の塗料が溶剤とともにＲ４内を螺旋状に移動す
ることにより満の一端からＦ４の外へ洗い流されるので
あって、溝を螺旋状とすることによって討中の塗料をＨ
４へ流出させる一条の流路を形成したから、ベローズの
洗浄を短い時間で、かつ、少ない量の溶剤で行うことが
できる効果があり、また、構中の塗料を完全に除去する
ことが可能であって、色の異なる複数の塗料を用いて色
替えを行う場合に、先に供給された塗料がベローズに付
着したままとなって洗浄後に供給される他の塗料に混入
するのを防止することができるとともに、塗料中の骨材
が討中に溜まってベローズの収縮ストロークが短くなる
のが防止されて、開弁時の弁口の開度を大きく保つこと
ができる効果があり、さらに、肘を螺旋状としたことに
よって、成形品の金型からの取り外しが容易となるため
、ベローズを射出成形によって製造することができて金
型形状が簡単となり、製造コストの低減を図ることがで
きる効果がある。Functions and Effects of the Invention The present invention has a two-leg structure, and when cleaning the outer periphery of the bellows, when a solvent is made to flow along the grooves on the outer periphery,
The paint in J/L moves spirally in R4 together with the solvent, and is washed away from one end of F4, and by making the groove spiral, the paint under attack is
Since a single flow path is formed to allow the flow to flow into the pipe, the bellows can be cleaned in a short period of time and with a small amount of solvent, and it is also possible to completely remove paint in the system. To prevent the previously supplied paint from remaining attached to the bellows and mixing with other paints supplied after cleaning, when changing colors using multiple paints of different colors. In addition, it prevents aggregates in the paint from accumulating in the tank and shortening the contraction stroke of the bellows, which has the effect of maintaining a large opening of the valve opening when the valve is opened. The spiral shape of the elbows makes it easy to remove the molded product from the mold, so the bellows can be manufactured by injection molding, which simplifies the mold shape and reduces manufacturing costs. effective.
実施例
以下、本発明の一実施例を添付図面に基づいて説明する
。EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.
図において、璽は、前端にノズル２が固着されたガン本
体であって、塗料を図示しない塗料圧送源から塗料供給
管３を通してガン本体ｌの前端部に供給すると、塗料は
、詳しくは後述する塗料開閉弁５を通ることによりノズ
ル２に送られて、埋金６及び抵抗体７を介して図示しな
い高電圧発生装置に接続した電極８により負電荷を帯び
た状態でノズル２の塗料噴出口９から噴出し、静電気の
反発作用と、ガン本体ｌ内のエアー圧送路１０を通って
ノズル２の塗料霧化用エアー噴出口Ｉｆから噴出するエ
アーの噴流とによって微粒化されつつ、ガン本体ｌ内の
エアー圧送路１２を通ってノズル２のパターン凋節用エ
アー噴出口Ｉ３から噴出するエアーにより所定の楕円形
状に整えられて、正徂荷を帯びた図示しない被塗置駒に
塗着するようになっている。In the figure, the seal is a gun body with a nozzle 2 fixed to the front end, and when paint is supplied from a paint pressure source (not shown) to the front end of the gun body l through a paint supply pipe 3, the paint is supplied to the front end of the gun body l, which will be described in detail later. The paint is sent to the nozzle 2 through the paint opening/closing valve 5, and is negatively charged by the electrode 8 connected to a high voltage generator (not shown) via the filler metal 6 and the resistor 7. 9 and is atomized by the repulsion of static electricity and the jet of air that passes through the air pressure passage 10 in the gun body l and is jetted out from the paint atomizing air outlet If of the nozzle 2. Air is ejected from the air outlet I3 of the nozzle 2 through the air pressure feeding path 12 in the inner part, and the pattern is shaped into a predetermined elliptical shape, so that it is applied to a piece to be coated (not shown) carrying a normal load. It has become.
次に、塗料開閉弁５について説明すると、ガン本体ｌ内
には、塗料供給管３に連通ずる塗料供給孔３ａを後端部
に開口させた流入室１５とノズル２の塗料噴出口９に連
通ずる流出室Ｉ６とが弁口Ｉ７により互いに連通して形
成され、流入室１５内には、支持筒１８の内周の案内孔
１９に１１７１後方向の摺動自由に、かつ、図示しない
ばね力により前方へ付勢された状態で内咲された弁杆２
０の前端部が突出していて、この弁杆２０には、先端の
テーパ１ｉｔ（２２を前後方向に接離させることにより
弁口１７を開閉する弁体２Ｋが、その後端面に突成した
雄ねじ部２４を弁杆２０の前端面の雌ねじ孔２５に螺着
することによって一体的に前後移動するように結合され
ており、弁杆２０の後端部に連結した図示しないトリガ
を付勢力に抗して引き操作すると、弁杆２０及び弁体２
Ｋが後方に移動することによって弁口Ｉ７が開放される
ようになっているとともに、トリガの引き操作を解除す
ると、付勢力によって弁杆２０及び弁体２１が前方に移
動することにより弁口Ｉ７が閉塞されるようになってい
る。Next, the paint on-off valve 5 will be explained. Inside the gun body l, a paint supply hole 3a that communicates with the paint supply pipe 3 is connected to an inflow chamber 15 that opens at the rear end and a paint spout 9 of the nozzle 2. An outflow chamber I6 is formed in communication with each other through a valve port I7, and the inflow chamber 15 is provided with a spring force (not shown) that freely slides in the rearward direction through a guide hole 19 on the inner periphery of the support cylinder 18. The valve rod 2 is opened inwardly while being urged forward by
The valve rod 20 has a tapered tip 1it (a valve body 2K that opens and closes the valve port 17 by moving the valve body 22 toward and away from the front and rear), and a male threaded portion protruding from the rear end surface of the valve rod 20. 24 is screwed into the female threaded hole 25 on the front end surface of the valve rod 20 so as to move integrally back and forth. When you pull the lever, the valve rod 20 and the valve body 2
When K moves backward, the valve port I7 is opened, and when the trigger pull operation is released, the valve rod 20 and the valve body 21 move forward due to the biasing force, thereby opening the valve port I7. is now blocked.
流入室１５内においては、弾性を有する合成樹脂材料か
らなる前後方向の伸縮可能なベローズ２６が、その前端
内周の内向きの鍔１７を弁体２Ｉの後端面と弁杆２０の
前端面との間に挟むとともに、後端外周の外向きの鍔２
８を支持筒１８の前端面と流入室１５の後部の拡径段部
２９との間に挟むことによって弁杆２０の外周を覆った
状態で装着されており、このベローズ２６によって、流
入室１５内の塗料が案内孔１９の内周と弁杆２０の外周
との隙間に侵入するのが防止されるようになっている。In the inflow chamber 15, a bellows 26 made of an elastic synthetic resin material and capable of expanding and contracting in the longitudinal direction connects an inwardly facing flange 17 on the inner periphery of its front end to the rear end surface of the valve body 2I and the front end surface of the valve rod 20. At the same time, the outward facing tsuba 2 on the outer periphery of the rear end
8 is sandwiched between the front end surface of the support cylinder 18 and the enlarged-diameter stepped portion 29 at the rear of the inflow chamber 15 so as to cover the outer periphery of the valve rod 20 . The paint inside is prevented from entering the gap between the inner periphery of the guide hole 19 and the outer periphery of the valve rod 20.
ベローズ２６は、第２図に示すように、その伸縮部３０
が縦断面において複数の三角形部３！が長さ方向に連続
する形状をなし、この伸縮部３０の外周には、隣り合う
三角形部３１．３１によって一条の満３２が螺旋状に形
成されていて、この螺旋状のＲ４３２の後端は外向きの
鍔２８の前端面に達しているとともに、満３２の前端は
ベローズ２６の前端面に達しており、弁杆２０の進退に
ともない、ｊＭ３２の幅が広がりつつベローズ２６が伸
長するとともにｊ１３２の幅が挟まりつつべａ−ズ２６
が収縮するようになっている。The bellows 26 has a telescopic portion 30 as shown in FIG.
is a plurality of triangular parts 3 in the longitudinal section! has a continuous shape in the length direction, and on the outer periphery of this extensible part 30, a single strip 32 is formed in a spiral shape by adjacent triangular parts 31 and 31, and the rear end of this spiral R432 is It reaches the front end surface of the outward facing flange 28, and the front end of the bellows 26 reaches the front end surface of the bellows 26. As the valve rod 20 moves forward and backward, the width of jM32 widens and the bellows 26 extends, and the j132 Beads 26 with the width of
is beginning to contract.
本実施例は上記構成になり、塗料の流路内を洗汁する際
には、塗料開閉弁５を開弁した状態で溶剤を塗料供給管
３を通して流入室１５内に圧送すると、ベローズ２６°
の伸縮部３０の後端に対応する位置において流入室Ｉ５
内に流入した溶剤が、流入室Ｉ５内を前方へ流動して開
放した弁口＋７及び流出室Ｉ６を通って塗料噴出口９か
ら噴出するのにともない、」１記の流路内の塗料が溶剤
により洗い流されて塗料噴出口９から噴出する。This embodiment has the above-mentioned configuration, and when cleaning the inside of the paint flow path, when the solvent is forced into the inflow chamber 15 through the paint supply pipe 3 with the paint opening/closing valve 5 open, the bellows 26°
The inflow chamber I5 is located at a position corresponding to the rear end of the telescopic portion 30.
As the solvent flowing into the interior flows forward in the inflow chamber I5, passes through the opened valve port +7 and the outflow chamber I6, and is ejected from the paint spout 9, the paint in the flow path 1. The paint is washed away by the solvent and ejected from the paint spout 9.
ここで、溶剤が流入室１５内を前方へ流動するときにベ
ローズ２６の外周近傍においては＃３２に治った螺旋状
の流れが生じ、この溶剤の流れにより、ベローズ２６の
外周に付着した塗料は、満３２に沿って押し流されてベ
ローズ２６の外周を回転しつつ次第に前方へ移動してベ
ローズ２６の前端面から押し出され、ＦＲ３２内に付着
したまま残ることなく完全に除去される。Here, when the solvent flows forward in the inflow chamber 15, a spiral flow with a shape of #32 occurs near the outer periphery of the bellows 26, and this solvent flow causes the paint attached to the outer periphery of the bellows 26 to be removed. , and is swept away along the FR 32, rotates around the outer periphery of the bellows 26, gradually moves forward, is pushed out from the front end surface of the bellows 26, and is completely removed without remaining attached inside the FR 32.
したがって、色の異なる複数の塗料を用いて色替え塗装
を行う場合には、洗ル後に供給される塗料中に先に用い
た塗料が混じる恐れはないのであり、また、骨材を混入
した塗料を用いた場合には、その骨材を溝３２中から完
全に除去できるから、１１１３２中に骨材が溜まること
によってベローズ２６の収縮時のストロークが短くなる
のが防止され、凹ブＦ時の弁口Ｉ７の開度を十分に大き
くして塗料の良好な流動を保つことができる。Therefore, when performing color change painting using multiple paints of different colors, there is no risk that the previously used paint will be mixed into the paint supplied after washing, and there is no risk of paint mixed with aggregate. When using the groove 32, the aggregate can be completely removed from the groove 32, which prevents the aggregate from accumulating in the groove 11132 and shortening the stroke of the bellows 26 when contracted. Good flow of the paint can be maintained by sufficiently increasing the opening degree of the valve port I7.
また、ベローズ２６の製造に際しては、伸縮部３０が螺
旋状をなしていて、金型中の成形品を回転させることに
よって金型から簡単に取り出すことができることから、
その成形に射出成型法を用いることが可能であり、これ
により、製造コストを低く抑えることができる。In addition, when manufacturing the bellows 26, since the extensible part 30 has a spiral shape and can be easily taken out from the mold by rotating the molded product in the mold,
It is possible to use an injection molding method for the molding, and thereby the manufacturing cost can be kept low.
なお、本発明は、スプレィガンに内蔵した塗料開閉弁に
限らず、色替え装置において塗料圧送源からスプレィガ
ンへの供給路の途中に設けた塗料開閉弁など、他の塗装
装置の塗料開閉弁にも適用することができる。The present invention is applicable not only to the paint on-off valve built into a spray gun, but also to the paint on-off valve of other painting equipment, such as the paint on-off valve installed in the middle of the supply path from the paint pumping source to the spray gun in a color changing device. Can be applied.
【図面の簡単な説明】
添付図面は本発明の一実施例を示し、第１図は縦断面図
、第２図はベローズの一部切欠側面図である。
５：塗料開閉弁 ９：塗料噴出口 ■５：流入室 １６
：流出室 Ｉ７；弁口 Ｉ９：案内孔２０：弁杆 ２１
：弁体 ２６：ベローズ３２ ： ｉ／ｌ
苓２回BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional view and FIG. 2 being a partially cutaway side view of the bellows. 5: Paint on/off valve 9: Paint spout ■5: Inflow chamber 16
: Outflow chamber I7; Valve port I9: Guide hole 20: Valve rod 21
: Valve body 26: Bellows 32 : i/l 2 times
Claims (1)
流出室との間に形成した弁口を前記流入室側からの接離
により開閉する弁体を、案内孔内に嵌装した弁杆の前記
流入室内への突出端に固着し、前記案内孔の前記流人室
への開口の近傍位置と前記弁杆の前記流入室への突出部
外周とに両端を固着した伸縮可能なベローズにより、前
記流人室内の塗料の前記案内孔内への侵入を防止するよ
うにした塗装装置の塗料開閉弁において、 前記ベローズを、該ベローズの伸縮にともなつて広狭す
る外周の溝が螺旋状をなす形状に成形したことを特徴と
する塗装装置の塗料開閉弁[Scope of Claims] A valve body that opens and closes a valve port formed between an inflow chamber communicating with a paint supply source and an outflow chamber communicating with a paint discharge port by moving toward and away from the inflow chamber side is connected to a guide hole. The valve rod is fixed to the protruding end of the valve rod inserted into the inflow chamber, and both ends are connected to a position near the opening of the guide hole to the flow chamber and to an outer periphery of the protrusion of the valve rod into the inflow chamber. In a paint opening/closing valve of a coating device, which prevents paint in the flow chamber from entering the guide hole by a fixed expandable bellows, the bellows widens and narrows as the bellows expands and contracts. A paint opening/closing valve for a painting device, characterized in that the groove on the outer periphery is formed into a spiral shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17766789A JP2700271B2 (en) | 1989-07-10 | 1989-07-10 | Paint on-off valve for coating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17766789A JP2700271B2 (en) | 1989-07-10 | 1989-07-10 | Paint on-off valve for coating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0342063A true JPH0342063A (en) | 1991-02-22 |
| JP2700271B2 JP2700271B2 (en) | 1998-01-19 |
Family
ID=16035003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17766789A Expired - Fee Related JP2700271B2 (en) | 1989-07-10 | 1989-07-10 | Paint on-off valve for coating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2700271B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007077972A (en) * | 2005-09-09 | 2007-03-29 | Ti Automotive Fuel Systems Sas | Module type fuel feeding assembly |
-
1989
- 1989-07-10 JP JP17766789A patent/JP2700271B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007077972A (en) * | 2005-09-09 | 2007-03-29 | Ti Automotive Fuel Systems Sas | Module type fuel feeding assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2700271B2 (en) | 1998-01-19 |
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