JPH0570510B2 - - Google Patents
Info
- Publication number
- JPH0570510B2 JPH0570510B2 JP15538488A JP15538488A JPH0570510B2 JP H0570510 B2 JPH0570510 B2 JP H0570510B2 JP 15538488 A JP15538488 A JP 15538488A JP 15538488 A JP15538488 A JP 15538488A JP H0570510 B2 JPH0570510 B2 JP H0570510B2
- Authority
- JP
- Japan
- Prior art keywords
- gun
- bent pipe
- holder
- coating
- rotation
- 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 - Lifetime
Links
- 238000000576 coating method Methods 0.000 claims description 40
- 239000011248 coating agent Substances 0.000 claims description 37
- 238000010422 painting Methods 0.000 claims description 19
- 238000005452 bending Methods 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、大口径の曲り管の内面に均一厚さの
塗装を施すための内面塗装方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an inner surface coating method for coating the inner surface of a large-diameter bent pipe with a uniform thickness.
従来の技術
従来より、大口径の曲り管を内面を塗装する場
合には、主として作業員が直接塗装ガンを手に持
つて行なつていた。BACKGROUND TECHNOLOGY Conventionally, when painting the inner surface of a large-diameter bent pipe, workers mainly held a painting gun directly in their hands.
発明が解決しようとする課題
しかし、上記従来の人手による方法によれば、
塗装面に対する塗装ガンの移動速度が必ずし一定
しないため、塗膜の厚さが均一に仕上らないとい
う問題があつた。Problems to be Solved by the Invention However, according to the above conventional manual method,
Since the moving speed of the coating gun relative to the painted surface is not necessarily constant, there is a problem in that the thickness of the coating film is not uniform.
本発明は、このような問題点にかんがみなされ
たものであつて、曲り管の内面を自動的に均一厚
さに塗装できるようになることを目的とする。 The present invention has been made in view of these problems, and it is an object of the present invention to make it possible to automatically coat the inner surface of a bent pipe to a uniform thickness.
課題を解決するための手段
上記従来の問題点を解決するため、本発明の内
面塗装方法は、塗装ガンを曲り管の内面から一定
距離だけ離隔するように旋回ホルダーの先端部に
設け、前記曲り管の曲り半径中心を前記旋回ホル
ダーの旋回中心に合致させ、前記旋回ホルダーを
管の曲り平面内で一定の旋回角速度で旋回させる
とともに、前記塗装ガンを前記曲り管の断面中心
を中心にして前記旋回ホルダーの旋回平面に直交
する平面内で回転させ、前記塗装ガンが前記曲り
管の内面各部の単位面積当りに対して等しい滞留
時間で移動するように、前記塗装ガンの回転角速
度を連続的に、かつ１回転ごとに繰り返し変速制
御するようにしたものである。Means for Solving the Problems In order to solve the above-mentioned conventional problems, the inner surface coating method of the present invention provides a coating gun that is installed at the tip of the swivel holder so as to be separated from the inner surface of the bent pipe by a certain distance. The center of the bending radius of the tube is aligned with the center of rotation of the turning holder, the turning holder is turned at a constant turning angular velocity within the bending plane of the tube, and the painting gun is rotated around the cross-sectional center of the bent tube. The rotating angular velocity of the painting gun is continuously adjusted so that the painting gun rotates in a plane orthogonal to the turning plane of the turning holder, and the painting gun moves at an equal residence time per unit area of each part of the inner surface of the bent pipe. , and the speed change control is performed repeatedly every rotation.
作 用
上記本発明の構成において、塗装ガンは曲り管
の内面に対して旋回ホルダーの旋回と塗装ガン自
体の回転とを合成した螺線状の運動を行ないなが
ら移動する。しかし、この場合、もし塗装ガンを
一定の回転角速度で回転させると、曲り管の曲り
方向についての塗装ガンの移動速度は、曲り管の
内径位置では最低速に、外径位置では最高速に、
頂部および底部では平均速度になる。したがつ
て、塗膜の厚さは均一でなくなる。そこで、本発
明においては、前記螺線運動が管内面単位面積当
り等しい滞留時間となるように、塗装ガンの回転
角速度を連続的に、かつ１回転ごとに繰り返し変
速制御することによつて、曲り管内面各部を自動
的に均一厚さに塗装できるようにしたのである。Operation In the configuration of the present invention described above, the coating gun moves with respect to the inner surface of the bent pipe while performing a spiral motion that combines the rotation of the rotating holder and the rotation of the coating gun itself. However, in this case, if the coating gun is rotated at a constant rotational angular velocity, the moving speed of the coating gun in the bending direction of the bent pipe will be the lowest speed at the inner diameter position of the bent pipe, the highest speed at the outer diameter position, and so on.
Average speed at the top and bottom. Therefore, the thickness of the coating film is no longer uniform. Therefore, in the present invention, the rotational angular velocity of the coating gun is controlled continuously and repeatedly for each rotation so that the spiral movement has an equal residence time per unit area of the inner surface of the tube. This makes it possible to automatically coat each part of the inner surface of the tube to a uniform thickness.
実施例
以下、本発明の一実施例を第１図および第２図
に基づいて説明する。Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
本実施例における装置は、第１図および第２図
に示すように、曲り管１を据え付ける支持台２
と、塗装ガン３を備えた旋回ホルダー４と、旋回
ホルダー４を支持する支柱５とを具備してなる。
曲り管１は、曲り角度αが90度、曲り半径がR0、
内周半径ｒの鋳鉄管で、曲り部の両端部に長さが
l1，l2の直線部を有し、長さl1の直線部の先端部
に受口６が形成され、塗装範囲は受口６を除く管
内面である。 As shown in FIGS. 1 and 2, the apparatus in this embodiment includes a support base 2 on which a bent pipe 1 is installed.
, a rotating holder 4 equipped with a coating gun 3, and a support 5 supporting the rotating holder 4.
The bent pipe 1 has a bending angle α of 90 degrees, a bending radius R 0 ,
A cast iron pipe with an inner radius r, with lengths at both ends of the bend.
It has straight parts l 1 and l 2 , and a socket 6 is formed at the tip of the straight part with length l 1 , and the coating area is the inner surface of the tube excluding the socket 6 .
支持台２は、基板７上にパンタグラフ８を介し
て矢印Ｚ方向に昇降可能に支持された昇降テーブ
ル９上に、下部スライドテーブル１０が矢印Ｘ方
向のあり溝１１を介して摺動可能に載設されると
ともに、下部スライドテーブル１０上に、上部ス
ライドテーブル１２が矢印Ｘ方向に直交する矢印
Ｙ方向のあり溝１３を介して摺動可能に載設され
てなる。１４は、曲り管１を両側から保持する支
持突起で、上部スライドテーブル１２上に複数個
設けられている。 The support base 2 has a lower slide table 10 slidably mounted on an elevating table 9 supported on a substrate 7 via a pantograph 8 so as to be movable up and down in the direction of arrow Z. At the same time, an upper slide table 12 is slidably mounted on the lower slide table 10 via a dovetail groove 13 in the direction of the arrow Y orthogonal to the direction of the arrow X. A plurality of support projections 14 are provided on the upper slide table 12 to hold the bent pipe 1 from both sides.
旋回ホルダー４は、支持アーム部１５とその基
部を中心とする半径R0の円弧状旋回アーム部１
６とからなるかぎ形に曲成された中空管で、支持
アーム部１５の基部が支柱５の上端部に矢印Ｓ方
向に旋回可能に支持されている。 The swing holder 4 includes a support arm part 15 and an arc-shaped swing arm part 1 having a radius R 0 centered at the base of the support arm part 15.
The base of the support arm 15 is supported by the upper end of the column 5 so as to be pivotable in the direction of arrow S.
旋回アーム部１６の先端部には、中空管製の回
転アーム１７が、旋回ホルダー４の旋回面に直交
する平面内で矢印Ｔ方向に回転可能に支持されて
おり、その先端部に塗装ガン３を取付け位置を調
節可能に備えている。１８は塗料供給ホースで、
支持アーム部１５の基部に接続され、旋回ホルダ
ー４および回転アーム１７の中空穴を経由して塗
装ガン３に塗料を一定流量で供給する。１９は旋
回ホルダー４を一定の旋回角速度θ・で旋回させる
旋回モータで、支柱５の頂部に取り付けている。
２０は回転アーム１７を回転角度ω・で回転させる
回転モータで、旋回アーム部１６の先端部に取り
付けられている。 A rotating arm 17 made of a hollow tube is supported at the tip of the rotating arm section 16 so as to be rotatable in the direction of arrow T within a plane perpendicular to the rotating surface of the rotating holder 4, and a coating gun is attached to the tip of the rotating arm 17. 3 so that the mounting position can be adjusted. 18 is the paint supply hose,
It is connected to the base of the support arm part 15 and supplies paint at a constant flow rate to the coating gun 3 via the hollow hole of the rotating holder 4 and the rotating arm 17. Reference numeral 19 denotes a turning motor that turns the turning holder 4 at a constant turning angular velocity θ, and is attached to the top of the support column 5.
A rotary motor 20 rotates the rotary arm 17 at a rotation angle ω, and is attached to the tip of the swing arm portion 16.
この回転角速度ω・は、塗装ガン３を曲り管１の
内面各部に対して単位面積当り等しい滞留時間で
移動させるため、次式(a)で示す値になるように連
続的に、かつ１回転ごとに繰り返し変速制御され
る。 In order to move the coating gun 3 to each part of the inner surface of the curved pipe 1 with the same residence time per unit area, this rotational angular velocity ω is set continuously and per revolution to the value shown by the following formula (a). The speed is controlled repeatedly every time.
ω・＝ω・ｏ×R0／R0−rcosω ……(a)
ここに、
ω・0＝塗装ガン３の曲り管１の頂部Ｂおよび底部
Ｄ（第１図参照）を通過するときの基準回転角
速度
＝πN／30
Ｎ＝塗装ガン３の基準回転角速度ω・0に対応する
基準回転数（rpm）
ω＝塗装ガン３の曲り管１の内径位置Ａ（第１図
参照）からの回転角度
このように回転角速度ω・を変速制御するため、
旋回モータ１９は、周波数ｋ・Ｎ（ｋは常数）で
cosωの関数発生器（図示省力）を経て回転され
る。 ω・=ω・o×R 0 /R 0 −rcosω ……(a) Here, ω・0 = When the paint gun 3 passes through the top B and bottom D of the bent pipe 1 (see Fig. 1) Reference rotational angular velocity = πN/30 N = Reference rotational speed (rpm) corresponding to the reference rotational angular velocity ω・0 of the coating gun 3 ω = Rotation of the coating gun 3 from the inner diameter position A of the bent pipe 1 (see Figure 1) Angle In order to control the rotational angular velocity ω in this way,
The swing motor 19 has a frequency of k·N (k is a constant).
It is rotated through a cosω function generator (not shown).
上記装置により曲り管１の内面を塗装するに
は、まず、曲り管１を支持台２上に載置し、矢印
Ｘ，Ｙ，Ｚ方向に移動させてその曲り半径R0の
中心を旋回ホルダー４の旋回中心に合致させると
ともに、曲り管１の断面中心を回転アーム１７の
回転中心に合致させる。また、塗装ガン３の位置
を塗装面から最適距離（例えば200〜300mm）に調
節する。 To paint the inner surface of the bent pipe 1 using the above device, first place the bent pipe 1 on the support base 2, move it in the directions of the arrows X, Y, and Z, and rotate the center of the bending radius R 4 and the cross-sectional center of the bent tube 1 to coincide with the rotation center of the rotary arm 17. Further, the position of the painting gun 3 is adjusted to the optimum distance (for example, 200 to 300 mm) from the painting surface.
このように準備しておいて、最初に長さl1の直
線部を塗装する。この場合は、旋回ホルダー４を
停止したまま塗装ガン３を定角速度で回転させ、
曲り管１を矢印方向に移動させながら塗装する。
続いて、曲り部を塗するが、この場合は、曲り管
１を停止し、塗装ガン３を変速回転させるととも
に旋回ホルダー４を連続的に旋回させがら塗装す
る。最後に長さl2の直線部を塗装する。この場合
は、塗装ガン３を定角速度で回転させたまま旋回
ホルダー４を停止し、曲り管１を矢印Ｘ方向に移
動させながら塗装する。ここで、本発明の特徴は
曲り部の塗装において発揮され、次にそれを説明
する。 Having prepared in this way, first paint the straight section of length l 1 . In this case, the painting gun 3 is rotated at a constant angular speed while the rotating holder 4 is stopped.
Painting is carried out while moving the bent pipe 1 in the direction of the arrow.
Subsequently, the bent portion is coated, but in this case, the bent pipe 1 is stopped, the coating gun 3 is rotated at variable speeds, and the rotating holder 4 is continuously rotated while painting. Finally, paint the straight section of length l 2 . In this case, the rotating holder 4 is stopped while the coating gun 3 is rotated at a constant angular speed, and the curved pipe 1 is moved in the direction of the arrow X while coating is performed. Here, the feature of the present invention is exhibited in the painting of curved parts, which will be explained next.
曲り部においては、塗装ガン３は塗装面に対し
て旋回ホルダー４の連続的な旋回と塗装ガン３自
体の回転とを合成した螺線運動を行い、その塗装
面に対する移動速度Ｖは旋回接線速度Vs＝θ・
（R0−rcosω）と回転接線速度Vt＝ω・ｒとを合成
したものである。 At the bend, the coating gun 3 performs a spiral motion that combines the continuous rotation of the rotating holder 4 and the rotation of the coating gun 3 itself relative to the coating surface, and the moving speed V with respect to the coating surface is the rotation tangential velocity. Vs=θ・
(R 0 −rcosω) and the rotational tangential velocity Vt=ω·r.
この場合、例えば塗装ガン３を一定を基準回転
角速度ω・0で回転させると、回転接戦速度Vt＝ω・
０・ｒ＝一定となり、曲り管１の内面各部につき、
単位面積当りの塗装ガン３の滞留時間が変化す
る。すなわち、塗布すべき面積が小さくなる曲り
管１の内径側では、単位面積当りの塗装ガン３の
滞留時間が長くなつて、塗膜が厚くなる。反対
に、塗布すべき面積が大きくなる外径側では、単
位面積当りの滞留時間が短くなつて、塗膜が薄く
なる。したがつて、塗装面の位置により塗膜の厚
さが均一でなくなる。 In this case, for example, if the painting gun 3 is rotated at a constant reference rotational angular velocity ω・0 , then the rotational speed Vt=ω・
0・r=constant, and for each part of the inner surface of the bent pipe 1,
The residence time of the coating gun 3 per unit area changes. That is, on the inner diameter side of the curved pipe 1 where the area to be coated is smaller, the residence time of the coating gun 3 per unit area becomes longer and the coating film becomes thicker. On the other hand, on the outer diameter side where the area to be coated becomes larger, the residence time per unit area becomes shorter and the coating film becomes thinner. Therefore, the thickness of the coating film is not uniform depending on the position of the painted surface.
しかし、本発明においては、塗装ガン３の回転
角速度ω・を前記(a)式のように変速制御しているの
で、回転接線速度
Vt＝ω・ｒ＝ω・0rR0／（R0−rCOSω）とな
り、回転接線速度Vtは旋回接線速度Vsに逆比例
して変動する。したがつて、塗装ガン３は、曲り
管１を内径側では速く、かつその外径側では遅く
移動して、曲り管１の内面各部に対して単位面積
当り等しい滞留時間で移動することになる。これ
により、塗装面の各部の塗膜の厚さは均一にな
る。 However, in the present invention, since the rotational angular velocity ω of the coating gun 3 is controlled as shown in equation (a) above, the rotational tangential velocity Vt=ω・r=ω・0 rR 0 /(R 0 − rCOSω), and the rotating tangential speed Vt changes in inverse proportion to the turning tangential speed Vs. Therefore, the coating gun 3 moves quickly on the inner diameter side of the curved pipe 1 and slowly on the outer diameter side, and moves with equal residence time per unit area to each part of the inner surface of the curved pipe 1. . This makes the thickness of the coating film uniform on each part of the painted surface.
なお、上記においては、実用上旋回ホルダー４
を連続的に旋回させたが、塗装ガン３の１回転ご
とに間欠的に一定角度ずつ旋回させてもよい。 In addition, in the above, in practical use, the rotating holder 4
Although the coating gun 3 is rotated continuously, it may be rotated intermittently by a fixed angle for each rotation of the coating gun 3.
発明の効果
以上述べたごとく本発明によれば、塗装ガンの
旋回ホルダーを一定の旋回角速度で旋回させると
ともに、塗装ガンを旋回ホルダーの旋回平面に直
交する平面内で回転させ、塗装ガンが曲り管の内
面各部に対して単位面積当り等しい滞留時間で移
動するように、塗装ガンの回転角速度を連続的
に、かつ１回転ごとに繰り返し変速制御するの
で、曲り管の内面各部を自動的に均一厚さに塗装
することができる。Effects of the Invention As described above, according to the present invention, the rotating holder of the painting gun is rotated at a constant rotation angular velocity, the painting gun is rotated in a plane perpendicular to the rotating plane of the rotating holder, and the painting gun is rotated in a curved tube. The rotational angular speed of the coating gun is controlled continuously and repeatedly for each revolution so that each part of the inner surface of the curved pipe is moved at the same residence time per unit area, so each part of the inner surface of the bent pipe is automatically coated with a uniform thickness. It can be painted.
第１図は本発明の一実施例における装置の正面
図、第２図は第１図の−線断面図である。
１……曲り管、３……塗装ガン、４……旋回ホ
ルダー、θ・……旋回角速度、ω・……回転速度。
FIG. 1 is a front view of an apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line -- in FIG. 1...Bent pipe, 3...Painting gun, 4...Swivel holder, θ...Swivel angular speed, ω...Rotation speed.
Claims (1)
隔するように旋回ホルダーの先端部に設け、前記
曲り管の曲り半径中心を前記旋回ホルダーの旋回
中心に合致させ、前記旋回ホルダーを管の曲り平
面内で一定の旋回角速度で旋回させるとともに、
前記塗装ガンを前記曲り管の断面中心を中心にし
て前記旋回ホルダーの旋回平面に直交する平面内
で回転させ、前記塗装ガンが前記曲り管の内面各
部の単位面積当りに対して等しい滞留時間で移動
するように、前記塗装ガンの回転角速度を連続的
に、かつ１回転ごとに繰り返し変速制御すること
を特徴とする内面塗装方法。1. A paint gun is installed at the tip of the swivel holder so as to be spaced a certain distance from the inner surface of the bent pipe, and the center of the bending radius of the bent pipe is aligned with the center of rotation of the swivel holder, and the swiveling holder is aligned with the bending plane of the pipe. While rotating at a constant angular velocity within the
The painting gun is rotated around the cross-sectional center of the bent pipe in a plane orthogonal to the turning plane of the turning holder, and the painting gun is rotated for an equal residence time per unit area of each part of the inner surface of the bent pipe. An inner surface coating method characterized in that the rotational angular velocity of the coating gun is continuously and repeatedly controlled for each rotation so that the coating gun moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15538488A JPH024477A (en) | 1988-06-22 | 1988-06-22 | Internal surface coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15538488A JPH024477A (en) | 1988-06-22 | 1988-06-22 | Internal surface coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH024477A JPH024477A (en) | 1990-01-09 |
| JPH0570510B2 true JPH0570510B2 (en) | 1993-10-05 |
Family
ID=15604771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15538488A Granted JPH024477A (en) | 1988-06-22 | 1988-06-22 | Internal surface coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH024477A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0625909Y2 (en) * | 1990-07-06 | 1994-07-06 | 株式会社泉精器製作所 | Manual pressure welding tool |
| WO2011099059A1 (en) | 2010-02-10 | 2011-08-18 | 三菱電機株式会社 | Air conditioning device |
| CN115350852B (en) * | 2022-09-22 | 2024-09-20 | 上海亦又新能源科技有限公司 | Offset type large-caliber bent pipe inner spraying inner and outer side uniform mixing device and application method thereof |
-
1988
- 1988-06-22 JP JP15538488A patent/JPH024477A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH024477A (en) | 1990-01-09 |
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