JP2608776B2 - Automatic coating equipment - Google Patents
Automatic coating equipmentInfo
- Publication number
- JP2608776B2 JP2608776B2 JP1016870A JP1687089A JP2608776B2 JP 2608776 B2 JP2608776 B2 JP 2608776B2 JP 1016870 A JP1016870 A JP 1016870A JP 1687089 A JP1687089 A JP 1687089A JP 2608776 B2 JP2608776 B2 JP 2608776B2
- Authority
- JP
- Japan
- Prior art keywords
- paint
- spray gun
- air
- pressurized air
- gun
- 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
- Nozzles (AREA)
- Spray Control Apparatus (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は塗料流の噴出パターンを空気流により制御す
るようにした塗装用スプレイガンに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray gun for coating in which a jet pattern of a paint stream is controlled by an air stream.
従来の技術及び発明が解決しようとする問題点 従来の塗装用スプレイガンは、塗料噴出口の左右両側
に１個ずつの空気噴出口を設けて塗料流を空気流により
両側から挟みつけるようにすることにより、塗料流を偏
平な扇形のパターンにして広い幅にわたつて均一に塗装
するようにしたものが一般的であるが、左右両側の空気
噴出口は共通の開閉弁を通して加圧空気供給源に接続さ
れていたため、噴出と停止を両側同時に制御し、また、
噴出量を制御する場合でも両側が同一量のままその大小
を制御し得るだけであり、このため、塗料流のパターン
は常に左右対称であつた。2. Description of the Related Art Problems to be solved by the prior art and the invention A conventional spray gun for painting is provided with one air jet port on each of the left and right sides of the paint jet port so that the paint flow is sandwiched from both sides by the air flow. Therefore, it is general that the paint flow is made into a flat fan-shaped pattern so that it can be applied uniformly over a wide width.However, the air outlets on the left and right sides are supplied with a pressurized air supply source through a common on-off valve. Since it was connected to the
Even when the amount of ejection is controlled, it is only possible to control the size while maintaining the same amount on both sides, so that the paint flow pattern is always symmetrical.
そこで、角形等の奥行のある被塗装物をコンベアで搬
送しつつ塗装する場合には、正面を塗装するスプレイガ
ンの他に左右の側面を塗装するために予め斜め方向を向
けた２個のスプレイガンを設置する方法や、被塗装物を
90゜ずつ回転させながら塗装する方法が採用されていた
が、多数のスプレイガンを設置すると設備が大掛かりと
なり、また、被塗装物を回転させるには被塗装物の搬送
間隔が大きくなつて能率が低下する欠点があつた。な
お、スプレイガンの方向を上下左右に変更することがで
きるガンヘツドを用いれば１つのガンで多面を塗装可能
であるが、ガン重量が大きくなり設備費が高い欠点があ
り、また、ガン角度変更に時間を要し、スプレイタイミ
ングに合致せず、実用化されていない。Therefore, when painting objects to be painted with a depth such as a square shape while transporting them on a conveyor, in addition to the spray gun that paints the front, two sprays that are turned obliquely in advance to paint the left and right sides are used. How to install the gun,
The method of painting while rotating by 90 ° was adopted, but if a large number of spray guns were installed, the equipment would be large, and the rotation of the workpiece would require a large transport interval between the workpieces, which would increase efficiency. There is a drawback to decrease. If you use a gun head that can change the direction of the spray gun up, down, left and right, you can paint multiple surfaces with one gun, but there is a disadvantage that the gun weight increases and the equipment cost is high. It takes time, does not match the spray timing, and has not been put to practical use.
一方、静電塗装においては塗料の回り込みによつて側
面も塗装可能であるが、正面と同一の膜厚に塗装するこ
とは不可能である。On the other hand, in the electrostatic coating, the side surface can be coated by coating the paint, but it is impossible to apply the same film thickness as the front surface.
問題点を解決するための手段 本発明の第１の発明はこのような問題点を解決するた
めの手段として、塗料噴出口の周りに形成した複数個の
空気噴出口から噴出する空気流によつて塗料流の噴出パ
ターンを制御するようにするとともに複数個の空気噴出
口を各別の開閉弁を介して加圧空気供給源に接続した塗
装用スプレイガンと、一方向に搬送される被塗装物の形
状を検知する形状認識装置と、その形状認識装置の検知
結果に従つて塗装用スプレイガンの空気噴出口の開閉を
制御する制御装置とからなる構成とし、また、第２の発
明は、前記塗装用スプレイガンが被塗装物の搬送方向と
直角方向に往復運動するようになつている構成とした。Means for Solving the Problems The first invention of the present invention provides a means for solving such a problem by using an air flow jetted from a plurality of air jets formed around the paint jet. A spray gun for controlling the spray pattern of the paint flow and connecting a plurality of air outlets to a pressurized air supply source via separate on-off valves, and a paint to be conveyed in one direction. A configuration comprising a shape recognition device that detects the shape of an object and a control device that controls the opening and closing of the air ejection port of the spray gun for painting according to the detection result of the shape recognition device, and the second invention is The coating spray gun is configured to reciprocate in a direction perpendicular to the conveying direction of the object to be coated.
発明の作用及び効果 本発明は上記構成により、第１の発明は、被塗物の形
状の変化に対応して各開閉弁を別々に開閉することによ
つて、塗料流の噴出方向を任意にかつ迅速に偏向させる
ことができるから、例えば角形の被塗装物が右から左へ
搬送されて来る場合には、まず、スプレイガンの塗料流
の噴出方向を右側に偏向させることにより搬送方向の前
面を斜め方向から塗装し、次いで、噴出方向を真直にし
て正面を塗装し、最後に、左側へ偏向させて搬送方向後
面を斜め方向から塗装することができるのであつて、一
個のスプレイガンで、ガン自体の方向を変えることな
く、正面と左右の側面等を均一に塗装することができ、
また、第２の発明は、搬送方向と直角な方向に長い被塗
装物を均一に塗装できる効果がある。According to the first aspect of the present invention, the opening and closing valves are individually opened and closed in response to a change in the shape of the object to be coated. For example, when a rectangular object is conveyed from right to left, it can be swiftly deflected.First, by deflecting the spraying direction of the spray gun paint flow to the right side, Can be applied from an oblique direction, then the front can be applied with the ejection direction straightened, and finally the left side can be deflected to apply the rear surface in the conveying direction from an oblique direction, with one spray gun, Without changing the direction of the gun itself, the front and left and right sides can be painted uniformly,
Further, the second aspect of the invention has the effect of being able to uniformly coat an object to be coated that is long in the direction perpendicular to the transport direction.
実施例 以下、本発明をエアスプレイガンに適用した一実施例
を添付図面に基いて説明する。Embodiment An embodiment in which the present invention is applied to an air spray gun will be described below with reference to the accompanying drawings.
図において、１はガン本体であつて、先端の中央部に
塗料供給路２が形成され、その先端に塗料ノズル３が螺
着されており、この塗料ノズル３は先端の塗料吐出口５
と内側の弁座４とを備え、ガン本体１を貫通して塗料供
給路２の中心に挿通された弁杆６の先端に形成された針
弁７が弁座４に接離可能に対応して開閉弁８が構成され
ており、ガン本体１の後端に螺着されたシリンダ９に摺
動自由に嵌入されたピストン10に弁杆６の後端が連結さ
れ、第１の加圧空気供給口11からシリンダ９内に加圧空
気が供給されるとピストン10が閉止用のスプリング12の
弾力に抗して弁杆６とともに後退して開閉弁８が開弁
し、塗料供給口13から低圧で圧送された塗料が塗料供給
路２を通つて先端の吐出口５から吐出するようになつて
いる。ガン本体１の先端にはノズルキヤツプ13がハブナ
ツト14により固定されており、このノズルキヤツプ13は
塗料ノズル３の周りに霧化用空気の供給路15を構成し、
第２の加圧空気供給口16から供給された加圧空気がこの
供給路15を通り、塗料噴出口５の周りに形成された４個
の霧化用空気噴出口25から噴出して吐出口５から吐出さ
れる塗料と混り合い、これを霧状にして噴出させるよう
になつている。In the figure, reference numeral 1 denotes a gun body, a paint supply passage 2 is formed at the center of the tip, and a paint nozzle 3 is screwed to the tip thereof.
A needle valve 7 formed at the tip of a valve rod 6 that penetrates through the gun body 1 and is inserted into the center of the paint supply path 2. And a rear end of the valve rod 6 is connected to a piston 10 which is slidably fitted in a cylinder 9 which is screwed to the rear end of the gun body 1. When pressurized air is supplied from the supply port 11 into the cylinder 9, the piston 10 retreats with the valve rod 6 against the elasticity of the closing spring 12, the opening / closing valve 8 is opened, and the paint supply port 13 opens. The paint that has been pressure-fed at a low pressure passes through the paint supply passage 2 and is discharged from the discharge port 5 at the tip. A nozzle cap 13 is fixed to the tip of the gun body 1 by a hub nut 14. This nozzle cap 13 constitutes a supply passage 15 for atomizing air around the paint nozzle 3.
The pressurized air supplied from the second pressurized air supply port 16 passes through this supply path 15 and is ejected from the four atomizing air ejection ports 25 formed around the paint ejection port 5 to be ejected. It mixes with the paint discharged from 5 and sprays it out in the form of a mist.
ノズルキヤツプ13の前面の外周部には、上下及び左右
に合計４個の角部17が90゜間隔で突成され、夫々の対応
面には塗料吐出口５の中心線の延長上の一点を斜め方向
から指向するパターン制御用の加圧空気噴出口18が形成
されており、これらの噴出口18はノズルキヤツプ13及び
ガン本体１に形成された空気供給路19を通して、ガン本
体１の外周に90゜間隔で装着された４個の電磁開閉弁20
に各別に接続され、これらの電磁開閉弁20はソレノイド
21の励磁によりプランジヤ22が閉止用のスプリング23の
弾力に抗して後退すると開弁し、第３の加圧空気供給口
24から供給された加圧空気が空気供給路19を通つてパタ
ーン制御用の加圧空気噴出口18から噴出するようになつ
ており、各電磁開閉弁20は各別に作動して対応する噴出
口18からの加圧空気の噴出と停止を各別に制御するよう
になつていて、霧化用空気噴出口25から噴出する加圧空
気に混つて霧化されて噴出する塗料流に向つて噴出口18
から加圧空気を吹き付けることにより、塗料流の噴出方
向をその噴出口18と反対方向に偏向させるようになつて
いる。ここで、１つの実験例を挙げると、パターン制御
用空気圧を3.0kgf/cm2として電磁開閉弁20を各個別に開
いたところ塗料流の偏向角は22゜であり、この場合にも
塗料の微粒化は十分に行なわれ、しかも、偏向方向の切
換えが極めて迅速に行なわれて、実用化し得ることが確
認された。なお、電磁開閉弁20はガン本体１と別体にし
てもよい。A total of four corners 17 are formed at 90 ° intervals on the outer periphery of the front surface of the nozzle cap 13 in the vertical and horizontal directions, and each corresponding surface has a point on the extension of the center line of the paint discharge port 5. Pressurized air jets 18 for pattern control that are directed obliquely are formed, and these jets 18 pass through the nozzle cap 13 and the air supply passage 19 formed in the gun body 1 to the outer periphery of the gun body 1. 4 solenoid on-off valves installed at 90 ° intervals 20
These solenoid valves 20 are solenoids
When the plunger 22 retreats against the resilience of the closing spring 23 due to the excitation of 21, the valve opens to open the third pressurized air supply port.
The pressurized air supplied from 24 passes through the air supply passage 19 and is ejected from the pressurized air ejection port 18 for pattern control, and each electromagnetic opening / closing valve 20 operates separately to correspond to the ejection port. The jetting and stopping of the pressurized air from 18 are separately controlled, and the jet is directed toward the paint flow that is atomized and jetted out of the pressurized air jetted from the atomizing air jet 25. 18
By spraying pressurized air from above, the jet direction of the paint flow is deflected in the direction opposite to the jet port 18. Here, as one experimental example, when the air pressure for pattern control was set to 3.0 kgf / cm 2 and the solenoid on-off valves 20 were individually opened, the deflection angle of the paint flow was 22 °. It was confirmed that the atomization was sufficiently performed, and the switching of the deflection direction was performed very quickly, so that it could be put to practical use. The electromagnetic on-off valve 20 may be provided separately from the gun body 1.
次に、本実施例のスプレイガンの使用例について説明
すると、まず、第４図に示すように、このスプレイガン
ａを図示しないレシプロケータに取付けて上下動するよ
うにしておき、多数の発光素子26と受光素子27を対設し
た形状認識装置28が制御装置29に入力され、演算処理さ
れた出力がスプレイガンａの各電磁弁20に入力されるよ
うになつていて、被塗装物の角部、平面部、上下部等を
形状認識装置28により検知し、検知位置からガン位置ま
での距離は走行コンベアのパルス信号等によつて計算
し、被塗装物の適宜位置にガンが合致したとき左右、上
下の偏向スプレイと標準スプレイが実施されかつその切
換えが自動的に行なわれるものであつて、例えば角形の
被塗装物ｂの搬送方向前面がスプレイガンａの前方に接
近したとき、塗料の噴出が開始すると同時に、上下左右
合計４個のパターン制御用の加圧空気噴出口18のうち左
側の噴出口18に連なる電磁開閉弁20のみが開弁し、他の
３個の電磁開閉弁20が閉弁していると、同図の（Ｉ）に
示すように塗料流ｃは左側の噴出口18から噴出する加圧
空気によつて右側へ偏向し、被塗装物ｂの搬送方向前面
に塗料が斜めに前方から吹き付けられて塗装が施され、
次いで、同図の（II）に示すように被塗装物ｂの正面が
スプレイガンａの前方に来ると全ての電磁開閉弁20が閉
弁して塗料流ｃは円形のパターンで吹き付けられ、さら
に、同図の（III）に示すように、被塗装物ｂの搬送方
向後端がスプレイガンａの前方に達すると右側の噴出口
18に連なる電磁開閉弁のみが開弁してその噴出口18から
噴出する加圧空気によつて塗料流ｃは左側へ偏向して被
塗装物ｂの搬送方向後面に吹き付けられ、また、スプレ
イガンａの上下方向のストロークの上端においては上側
の噴出口18に連なる電磁開閉弁20のみが開弁して塗料流
ｃが下向きに偏向することにより被塗装物ｂの上面に吹
き付けられ、ストロークの下端においては逆に上向きに
偏向して下面に吹き付けられるようになつている。Next, an example of use of the spray gun of this embodiment will be described. First, as shown in FIG. 4, the spray gun a is attached to a reciprocator (not shown) so as to move up and down, and a large number of light emitting elements are provided. A shape recognizing device 28, which is a pair of a light receiving element 27 and a light receiving element 27, is input to a control device 29, and the output of the arithmetic processing is input to each solenoid valve 20 of the spray gun a. Section, flat surface, upper and lower parts, etc. are detected by the shape recognition device 28, and the distance from the detection position to the gun position is calculated by the pulse signal of the traveling conveyor, etc., when the gun matches the appropriate position of the object to be coated. Left and right, up and down deflection spraying and standard spraying are performed and their switching is automatically performed. For example, when the front surface of the rectangular object b in the conveying direction approaches the front of the spray gun a, Gushing At the same time, only the electromagnetic on-off valve 20 connected to the left ejection port 18 out of the four pressurized air ejection ports 18 for pattern control, which is a total of four vertically and horizontally, is opened, and the other three electromagnetic on-off valves 20 are closed. When the valve is opened, the paint flow c is deflected to the right side by the pressurized air ejected from the ejection port 18 on the left side as shown in (I) of FIG. Painted by being sprayed diagonally from the front,
Next, as shown in (II) of the figure, when the front side of the object to be coated b comes in front of the spray gun a, all the solenoid on-off valves 20 close and the paint flow c is sprayed in a circular pattern. As shown in FIG. 3 (III), when the rear end of the workpiece b in the transport direction reaches the front of the spray gun a, the right outlet
Only the electromagnetic opening / closing valve connected to the valve 18 is opened, and the paint flow c is deflected to the left by the pressurized air ejected from the ejection port 18 and sprayed on the rear surface in the transport direction of the object b, and the spray gun At the upper end of the vertical stroke of a, only the solenoid on-off valve 20 connected to the upper ejection port 18 is opened to deflect the paint flow c downward, so that the paint flow c is sprayed on the upper surface of the workpiece b, and the lower end of the stroke Is deflected upward and sprayed on the lower surface.
次に、第５図に示すようにハンガｄにより吊り下げら
れて紙面と垂直な方向へ搬送される被塗装物ｅの大きな
凹凸面に対し、図示しないレシプロケータに取付けられ
た１個のスプレイガンａが上下動しつつ塗料を噴射して
塗装を施す場合には、スプレイガンａが下方へ動くとき
に上側のパターン制御用の加圧空気噴出口18のみから加
圧空気を噴出させて塗料流ｃを下向きに偏向させ、上方
へ動くときは下側の噴出口18から加圧空気を噴出させて
塗料流ｃを上向きに偏向させることにより、被塗装物ｅ
の凹凸の側面に斜め上方または下方から塗料が吹き付け
られて頂面や底面と略同一の膜厚で塗装が施される。Next, as shown in FIG. 5, one spray gun attached to a reciprocator (not shown) is attached to a large uneven surface of the object e to be coated which is hung by a hanger d and conveyed in a direction perpendicular to the paper surface. When spray gun a moves up and down to apply paint, when spray gun a moves downward, pressurized air is ejected only from pressurized air jet port 18 for pattern control on the upper side to spray paint. c is deflected downward, and when it moves upward, pressurized air is ejected from the ejection port 18 on the lower side to deflect the paint flow c upward, whereby the object to be coated e
The coating is sprayed obliquely from above or below to the side surface of the unevenness of the above, and the coating is applied with a film thickness substantially the same as the top surface and the bottom surface.
本発明は静電塗装用スプレイガン及びエアレススプレ
イガンにも適用することができる。The present invention can be applied to a spray gun for electrostatic coating and an airless spray gun.
第１図は本発明の一実施例のスプレイガンの断面図、第
２図はその正面図、第３図は第１図Ａ−Ａ線断面図、第
４図は本発明のスプレイガンの使用方法の一例を示す平
面図、第５図は他の使用例を示す側面図である。 1:ガン本体、2:塗料供給路、3:塗料ノズル、5:塗料吐出
口、6:弁杆、7:針弁、8:開閉弁、9:シリンダ、10:ピス
トン、13:ノズルキヤツプ、15:霧化用加圧空気供給路、
18:パターン制御用加圧空気噴出口、19:パターン制御用
加圧空気供給路、20:電磁開閉弁、25:霧化用加圧空気供
給路1 is a sectional view of a spray gun according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a sectional view taken along line AA of FIG. 1, and FIG. 4 is use of the spray gun of the present invention. FIG. 5 is a plan view showing an example of the method, and FIG. 5 is a side view showing another example of use. 1: Gun body, 2: Paint supply path, 3: Paint nozzle, 5: Paint outlet, 6: Valve rod, 7: Needle valve, 8: On / off valve, 9: Cylinder, 10: Piston, 13: Nozzle cap, 15: Pressurized air supply path for atomization,
18: pressurized air jet for pattern control, 19: pressurized air supply passage for pattern control, 20: solenoid valve, 25: pressurized air supply passage for atomization
Claims (2)
噴出口から噴出する空気流によつて塗料流の噴出パター
ンを制御するようにするとともに前記複数個の空気噴出
口を各別の開閉弁を介して加圧空気供給源に接続した塗
装用スプレイガンと、一方向に搬送される被塗装物の形
状を検知する形状認識装置と、該形状認識装置の検知結
果に従つて前記塗装用スプレイガンの前記空気噴出口の
開閉を制御する制御装置とからなる自動塗装装置A plurality of air outlets formed around the paint outlet to control a spray pattern of the paint flow by an air flow ejected from the plurality of air outlets, and each of the plurality of air outlets is separately provided. A spray gun for painting connected to a pressurized air supply source via an on-off valve, a shape recognition device for detecting the shape of the object to be coated conveyed in one direction, and the coating device according to the detection result of the shape recognition device. Coating device comprising a control device for controlling the opening and closing of the air ejection port of a spray gun
方向と直角方向に往復運動するようになつていることを
特徴とする特許請求の範囲第１項記載の自動塗装装置2. The automatic coating apparatus according to claim 1, wherein said spray gun for coating is reciprocated in a direction perpendicular to a conveying direction of an object to be coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1016870A JP2608776B2 (en) | 1989-01-26 | 1989-01-26 | Automatic coating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1016870A JP2608776B2 (en) | 1989-01-26 | 1989-01-26 | Automatic coating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02111466A JPH02111466A (en) | 1990-04-24 |
| JP2608776B2 true JP2608776B2 (en) | 1997-05-14 |
Family
ID=11928238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1016870A Expired - Fee Related JP2608776B2 (en) | 1989-01-26 | 1989-01-26 | Automatic coating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2608776B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022987A (en) * | 2016-11-30 | 2019-07-16 | 东芝三菱电机产业系统株式会社 | Spray nozzle |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6935577B2 (en) * | 2003-02-28 | 2005-08-30 | Illinois Tool Works Inc. | One-piece fluid nozzle |
| JP4652094B2 (en) * | 2005-03-24 | 2011-03-16 | アネスト岩田株式会社 | Pattern variable single-angle spray gun |
| KR101258753B1 (en) * | 2009-05-22 | 2013-04-29 | 김한식 | Automatic a extinguish fire |
| CN103223777B (en) * | 2013-05-16 | 2015-08-26 | 汕头市俊国机电科技有限公司 | A kind of shower nozzle assembly of portable steel plate surface-spraying device |
| JP7472473B2 (en) * | 2019-11-19 | 2024-04-23 | 株式会社Ihi | Automatic Painting System |
| JP7431021B2 (en) * | 2019-11-29 | 2024-02-14 | アネスト岩田株式会社 | spray gun |
| JP7454817B2 (en) * | 2020-11-10 | 2024-03-25 | トヨタ自動車株式会社 | Nozzle device and spray method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63149258U (en) * | 1987-03-17 | 1988-09-30 |
-
1989
- 1989-01-26 JP JP1016870A patent/JP2608776B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022987A (en) * | 2016-11-30 | 2019-07-16 | 东芝三菱电机产业系统株式会社 | Spray nozzle |
| CN110022987B (en) * | 2016-11-30 | 2021-10-29 | 东芝三菱电机产业系统株式会社 | Spray nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02111466A (en) | 1990-04-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |