JPS62160155A - Painting spray gun - Google Patents
Painting spray gunInfo
- Publication number
- JPS62160155A JPS62160155A JP29747985A JP29747985A JPS62160155A JP S62160155 A JPS62160155 A JP S62160155A JP 29747985 A JP29747985 A JP 29747985A JP 29747985 A JP29747985 A JP 29747985A JP S62160155 A JPS62160155 A JP S62160155A
- Authority
- JP
- Japan
- Prior art keywords
- shaped
- fan
- spray
- air flow
- jet nozzle
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
- B05B7/068—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet the annular gas outlet being supplied by a gas conduit having an axially concave curved internal surface just upstream said outlet
Landscapes
- Nozzles (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、オリフィス型平吹き噴液ノズルから噴出する
扇形状噴霧に対し周辺から空気流を供給して塗装に好適
な扇形状噴霧流を生成するようにしたスプレーガンに関
するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention provides a fan-shaped spray suitable for painting by supplying an air flow from the periphery to the fan-shaped spray ejected from an orifice type flat spray nozzle. This relates to a spray gun designed to generate
（従来技術の問題点）
オリフィス型平吹き噴液ノズルからの扇形噴霧にその周
辺から空気流を添加するようにした噴霧装置は多種類発
表されているが、その代表的なものとして、実開昭５７
−９０７６２公報に記載されたものおよび特開昭５０−
５３４３０公報に記載されたものがある〇
実開昭５７−９０７６２公報に記載された先行技術は、
ドーム状凹穴と溝との交叉により形成されるリップ状の
噴気ノズルを平吹き噴液ノズルに冠せかける状態のもと
に設け、以って扇形状空気流の中央に噴液ノズルから噴
出する扇形状噴霧を噴出して霧化の向上およびミスト飛
散の防止等を実現するようにしたものであるが、霧化効
果、テール発生防止効果、噴霧流の乱調防止効果等が認
められるものの、添加空気流による噴霧角縮小現象によ
り長い長円パターンが得られ難い欠点がある。(Problems with the prior art) Many types of spray devices have been announced that add airflow from the periphery to the fan-shaped spray from an orifice-type flat spray nozzle. Showa 57
- What is described in Publication No. 90762 and JP-A-1988-
There is one described in 53430 publication. The prior art described in Utility Model Application Publication No. 57-90762 is
A lip-shaped jet nozzle formed by the intersection of a dome-shaped recessed hole and a groove is placed over the flat jet nozzle, so that the jet nozzle emits water into the center of the fan-shaped air flow. This method improves atomization and prevents mist scattering by ejecting a fan-shaped spray, but although it has an atomization effect, a tail generation prevention effect, and a spray flow turbulence prevention effect, There is a drawback that it is difficult to obtain a long oval pattern due to the spray angle reduction phenomenon caused by the added air flow.
また特開昭５０−５３４３０公報に記載された先行技術
は、平吹き噴液ノズルから噴出する扇形状噴霧の後方か
ら前方へ漸次狭縮する中空円錐形空気流を供給するほか
、前記扇形状噴霧の両側に斜め前向きの空気流を供給す
るよってし、これにより霧化効化、テール発生防止効果
、ミスト飛散防止効果等を企図したものであるが、中空
円錐状空気膜のバランスの保持および両側からの空気流
のバランスの保持が難かしいため、扇形状噴霧流に部分
的に濃淡が生じて条状のもとに揺動する乱調現象が起り
易く、塗装むらが生じる原因となる重大欠陥がある。Further, the prior art described in Japanese Patent Application Laid-Open No. 50-53430 supplies a hollow conical air flow that gradually narrows from the rear to the front of the fan-shaped spray ejected from a flat jet nozzle, and also supplies the fan-shaped spray By supplying diagonally forward airflow to both sides of the air, this is intended to improve atomization, prevent tail generation, and prevent mist scattering. Because it is difficult to maintain the balance of the air flow from the spray, the fan-shaped spray flow tends to become partially concentrated and oscillate under the stripes, causing serious defects that cause uneven coating. be.
（本発明の目的）
本発明は、比較的簡単な構造のもとに、ドーム状凹穴の
前端に設けたリップ状噴気ノズル採択型の諸効果を発揮
させつつ、広角扇形噴霧を得ることができる塗装用スプ
レーガンを提供することを目的とするものである。(Objective of the present invention) The present invention is capable of producing a wide-angle fan-shaped spray while exhibiting various effects of a lip-shaped jet nozzle provided at the front end of a dome-shaped recessed hole with a relatively simple structure. The purpose of this invention is to provide a paint spray gun that can be used for painting.
（本発明の特徴）
本発明は、ドーム状凹穴の前端にリップ状噴気口を設け
た噴気ノズルをオリフィス型平吹き噴液ノズルに冠せか
けるように設けるほか、リップ状噴気口の両端寄りの両
側から噴出して衝突する２対の空気流により斜め前向き
でかつ外向きの扇形状空気流を形成し、この両用形状空
気流を前記リップ状噴気ノズルからの扇形状空気流の両
端縁部に合流する状態に添加し、以って両端方における
二次的扇形空気流による外向き誘引作用により扇形噴霧
を広角化するようにしたことを特徴とするものである。(Characteristics of the present invention) The present invention provides a jet nozzle having a lip-shaped jet nozzle at the front end of a dome-shaped concave hole, which is mounted on an orifice-type flat jet nozzle, and a lip-shaped jet nozzle near both ends of the lip-shaped jet nozzle. The two pairs of airflows eject from both sides of the lip and collide to form a diagonally forward and outward fan-shaped airflow, and this dual-purpose airflow is connected to both end edges of the fan-shaped airflow from the lip-shaped jet nozzle. The invention is characterized in that the fan-shaped spray is added in a state where it merges with the air flow, thereby widening the angle of the fan-shaped spray due to the outward attracting action of the secondary fan-shaped air flow at both ends.
（実施例）
以下、本発明の塗装用スプレーガンを図示の実施例につ
いて詳細に説明する。(Example) Hereinafter, the painting spray gun of the present invention will be described in detail with reference to the illustrated embodiment.
第１図ないし第３図に示すように、スプレーガン本体１
の先端寄りの中心部に弁座２を固着すると共に、この弁
座２に対応する針弁３を進退自在に対設し、針弁３が貫
通しているスプレーガン本体１における塗料供給路４の
後方から圧送される塗料を針弁３の後退により弁座２か
ら前方へ給送することができるようにし、かつこのスプ
レーガン本体１の前端には、先端にオリフィス型平吹き
噴液ノズル５を固着したホルダー６をバッキング７の介
在のもとに対設すると共に、このホルダー６の外周側に
はリップ状噴気口８による噴気ノズルがある噴気ノズル
部材９を同一軸線関係のもとに嵌合したまま、ナツト１
０によりスプレーガン本体１に取り付け、かつホルダー
６およびスプレーガン本体１にはそれぞれ前記噴気口８
に連通ずるように通気路１１および１２を設けて、後方
から供給される加圧空気を両通気路１２および１１から
噴気口８に供給しつつ、噴気口８から扇形状空気流を噴
出させ、この扇形空気流により前記平吹き噴液ノズル５
から噴出する扇形状塗料噴霧を包囲した状態のもとに前
方へ推進させるようにし、更に噴気ノズル部材９には前
記噴気口８から適度に離れだ両側において、前記扇形状
塗料噴霧面に対向するように突出部１３．１３を設ける
と共に、この両突出部１３には前記噴気口８から噴出す
る扇形状空気流の両端縁付近に指向したまま同部分にお
いて互いに衝突する空気流を噴出するための扁平化用噴
気ノズル１４．１４を僅かに斜め前向きでしかも隣接ノ
ズル１４とは前方へ漸次拡開する方向に設け、かつこれ
ら噴気ノズル１４．１４に連通ずる通気路１５．．１５
を後向きに設けるほか、スプレーガン本体１には通気路
１５に連通ずる通気路１６を設けて、後方から供給され
る加圧空気を通気路１６．１５から噴気ノズル１４．１
４に供給しつつ、この噴気ノズル１４から斜め前方で対
向空気流と衝突する傾向のもとに前記扇形状空気流にお
ける両端縁付近の部分と合流並びに扁平化して斜め前向
きの外方へ推進するように噴出させ、これにより噴気口
８から噴出する空気流により扇形状噴霧を包囲したまま
扇形角度を可及的に狭縮しない状態のもとに推進させつ
つ噴気ノズル１４．１４から噴出する二次的な空気流に
よる外方への誘引作用により扇形状噴霧を積極的に広角
化するようにしてなるのである。As shown in Figures 1 to 3, the spray gun body 1
A valve seat 2 is fixed to the center near the tip of the valve seat 2, and a needle valve 3 corresponding to the valve seat 2 is provided oppositely so as to be freely forward and backward. The paint pumped from the rear can be fed forward from the valve seat 2 by retracting the needle valve 3, and the front end of the spray gun body 1 is equipped with an orifice-type flat spray nozzle 5 at the tip. A holder 6 to which a holder 6 is fixed is placed opposite to the holder 6 with a backing 7 interposed therebetween, and a jet nozzle member 9 having a jet nozzle formed by a lip-shaped jet port 8 is fitted on the outer circumferential side of the holder 6 in a coaxial relationship. Keep it together, Natsu 1
0 to the spray gun body 1, and the holder 6 and the spray gun body 1 each have the jet nozzle 8.
Ventilation passages 11 and 12 are provided so as to communicate with each other, and pressurized air supplied from the rear is supplied from both ventilation passages 12 and 11 to the fumarole 8, and a fan-shaped air flow is ejected from the fumarole 8, This fan-shaped air flow causes the flat jet liquid nozzle 5 to
The fan-shaped paint spray ejected from the fan-shaped paint spray is surrounded and propelled forward, and furthermore, the jet nozzle member 9 is provided with a fan-shaped paint spray surface facing the fan-shaped paint spray surface on both sides at an appropriate distance from the jet nozzle 8. Projections 13.13 are provided as shown in FIG. The flattening fume nozzle 14.14 is provided slightly diagonally forward and in a direction that gradually expands forward with respect to the adjacent nozzle 14, and an air passage 15.14 is provided in communication with these fume nozzles 14. ．． 15
In addition, the spray gun body 1 is provided with a ventilation passage 16 that communicates with the ventilation passage 15 so that pressurized air supplied from the rear is passed from the ventilation passage 16.15 to the jet nozzle 14.1.
4, it tends to collide with the opposing air flow diagonally forward from this jet nozzle 14, merges with the portions near both ends of the fan-shaped air flow, flattens it, and propels it diagonally forward and outward. As a result, the fan-shaped spray is surrounded by the air flow ejected from the jet nozzle 8, and the fan-shaped spray is propelled without narrowing the fan-shaped spray as much as possible, and the spray is jetted from the jet nozzle 14.14. The fan-shaped spray is actively widened by the outward attracting action of the subsequent air flow.
以上のほか、スプレーガン本体１および噴気ノズル部材
９を貫通する導電線１７および１８を途中の接触部の介
在のもとに設けてその導電線１８の先端を針状電極１９
としてこれを噴気ノズル部材９における一方の突出部１
３の先端寄り部分から斜め内向きに突出させて扇形噴霧
の基端面に近く配置し、この電極１９に対し高圧電源２
０から安全用高抵抗２１および導電線１８．１７を経て
高電圧を印加することにより、扇形状噴霧に高圧電荷を
荷電して静電塗装に適応させることができ、霧化効率お
よび塗着効率を一層向上することができるのである。In addition to the above, conductive wires 17 and 18 passing through the spray gun main body 1 and the jet nozzle member 9 are provided with a contact part interposed in the middle, and the tip of the conductive wire 18 is connected to a needle electrode 19.
This is defined as one protrusion 1 in the jet nozzle member 9.
The high-voltage power source 2 is connected to the electrode 19 by protruding diagonally inward from the tip of the electrode 19 and disposed near the base end surface of the fan-shaped spray.
By applying a high voltage from zero through the safety high resistance 21 and the conductive wire 18.17, the fan-shaped spray can be charged with a high voltage charge and adapted to electrostatic painting, increasing the atomization efficiency and coating efficiency. can be further improved.
なお、前記噴気ノズル部材９に設けるリップ状噴気口８
については、前端寄りの中央にドーム状凹穴２１を後方
開放状態に設けると共に、前端には谷底に丸味がある７
字状溝２２を前記ドーム状凹穴２１と適度の深さに交叉
させ、かつその外方から同一軸線のもとに円錐状座繰り
を施すことにより内側両部に円弧状切欠部２３．２３を
設けるようにするのが望ましい。Note that the lip-shaped jet nozzle 8 provided in the jet nozzle member 9
, a dome-shaped recessed hole 21 is provided in the center near the front end in a rearward open state, and the front end has a rounded bottom 7
By making the character-shaped groove 22 intersect with the dome-shaped recessed hole 21 at an appropriate depth, and by applying a conical counterbore from the outside along the same axis, arc-shaped notches 23, 23 are formed on both inner sides. It is desirable to provide a
以上の構成のもとに、使用に当っては、塗料の供給圧力
を数〜１５０に９Ｓとし、また空気の供給圧力を数１ｖ
／ｃｆｆｌないしそれ以下−に選定するのであり、その
供給圧の選定により低粘度から高粘度の広範囲の塗料に
適応させることができるのである。Based on the above configuration, during use, the paint supply pressure is set to 9S to several to 150, and the air supply pressure is set to several 1V.
/cffl or less, and by selecting the supply pressure, it can be applied to a wide range of paints from low viscosity to high viscosity.
（効 果）
以上説明したように、本発明によれば、ドーム状凹穴の
先端に設けたリップ状噴気口から扇形状空気流を噴出す
るようにすると共に、この扇形状空気流と共通平面上に
扇形状塗料噴霧をオリアイス型平吹き噴液ノズルから噴
出するようにしたことにより、霧化効果、テール発生防
止効果、ミスト飛散防止効果、噴霧流の乱調防止効果が
あるほか、２対の噴気ノズル１４．１４を設けてこの噴
気ノズルからの対向空気流をリップ状噴気口８からの扇
形状空気流の基端寄りの両端縁付近において衝突する傾
向のもとに噴出させて扇形状空気流と合流した後、斜め
前向きの外方へ推進させるようにしたから、この２対の
噴気ノズル１４．１４からの二次的空気流による誘引作
用のもとに前記諸効果を損なうことなく扇形状噴霧を広
角化して長い長円パターンの塗膜を形成することができ
、従って広面積の塗装を高能率かつ均斉に実施すること
ができるのである。(Effects) As explained above, according to the present invention, a fan-shaped air flow is ejected from the lip-shaped blowhole provided at the tip of the dome-shaped recessed hole, and a fan-shaped air flow is disposed on a common plane with the fan-shaped air flow. The fan-shaped paint spray is ejected from the Oriais-type flat spray nozzle, which has an atomization effect, a tail generation prevention effect, a mist scattering prevention effect, and a spray flow turbulence prevention effect. A fume nozzle 14.14 is provided, and the opposing air flow from the fume nozzle is ejected with a tendency to collide near both edges of the fan-shaped air flow from the lip-shaped jet nozzle 8 near the proximal end, thereby producing fan-shaped air. After merging with the flow, it is propelled diagonally forward and outward, so that the fan can be generated without impairing the above-mentioned effects under the attraction effect of the secondary air flow from these two pairs of jet nozzles 14 and 14. It is possible to form a coating film with a long elliptical pattern by widening the spray angle, and therefore it is possible to coat a wide area with high efficiency and uniformly.
図面は一実施例における本発明の塗装用スプレーガンの
要部を示すものであって、第１図は縦断側面図、第２図
は正面図、また第３図は横断平面図である。
５・・・平吹き噴液ノズル
８・・・リップ状噴気口
９・・・噴気ノズル部材
１４・・・噴気ノズル
２１・・・ドーム状凹穴The drawings show essential parts of a painting spray gun of the present invention in one embodiment, with FIG. 1 being a longitudinal side view, FIG. 2 being a front view, and FIG. 3 being a cross-sectional plan view. 5... Flat jet liquid nozzle 8... Lip-shaped blowhole 9... Blower nozzle member 14... Blower nozzle 21... Dome-shaped recessed hole
Claims (1)
後方開放状態に形成すると共に、このドーム状凹穴の前
端にリップ状噴気口を形成して扇形状空気流を噴出する
ようにし、かつこの噴気ノズル部材をオリフィス型平吹
き噴液ノズルに同一軸線関係のもとに冠せかけるように
設けて平吹き噴液ノズルからの扇形状噴霧を前記扇形状
空気流と共通平面上に噴出するようにし、更に前記噴気
口から適度に離れた両側には、前記扇形状空気流におけ
る基端寄りの両端縁付近に指向したまま互いに衝突する
空気流を噴出するための２対の噴気ノズルを斜め前向き
でしかも隣接ノズルとは前方へ漸次拡開する方向に設け
てなる塗装用スプレーガン。A dome-shaped recessed hole is formed in a central portion near the front end of the jet nozzle member so as to be open to the rear, and a lip-shaped jet opening is formed at the front end of the dome-shaped recessed hole to emit a fan-shaped air flow, and This jet nozzle member is provided so as to hang over the orifice type flat jet nozzle in the same axial relation, and the fan-shaped spray from the flat jet nozzle is jetted onto the same plane as the fan-shaped air flow. Furthermore, two pairs of fume nozzles are installed diagonally on both sides at an appropriate distance from the fumarole for ejecting air streams that collide with each other while being directed near both edges of the fan-shaped air stream near the base end. A paint spray gun that faces forward and has an adjacent nozzle that gradually expands forward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29747985A JPH0688004B2 (en) | 1985-12-30 | 1985-12-30 | Spray gun for painting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29747985A JPH0688004B2 (en) | 1985-12-30 | 1985-12-30 | Spray gun for painting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62160155A true JPS62160155A (en) | 1987-07-16 |
| JPH0688004B2 JPH0688004B2 (en) | 1994-11-09 |
Family
ID=17847028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29747985A Expired - Lifetime JPH0688004B2 (en) | 1985-12-30 | 1985-12-30 | Spray gun for painting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0688004B2 (en) |
-
1985
- 1985-12-30 JP JP29747985A patent/JPH0688004B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0688004B2 (en) | 1994-11-09 |
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