JPH04243579A - Flow coat painting method - Google Patents
Flow coat painting methodInfo
- Publication number
- JPH04243579A JPH04243579A JP2404891A JP2404891A JPH04243579A JP H04243579 A JPH04243579 A JP H04243579A JP 2404891 A JP2404891 A JP 2404891A JP 2404891 A JP2404891 A JP 2404891A JP H04243579 A JPH04243579 A JP H04243579A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- coated
- curtain
- state
- flow
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title abstract description 10
- 238000010422 painting Methods 0.000 title description 4
- 239000003973 paint Substances 0.000 claims abstract description 75
- 238000000576 coating method Methods 0.000 claims abstract description 30
- 239000011248 coating agent Substances 0.000 abstract description 16
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、フローコート塗装方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow coat coating method.
【０００２】0002
【従来の技術】フローコート塗装方法は、単一組成の塗
料を一定幅の薄いカーテン状に流し落とし、被塗装物を
そのカーテン状の塗料を通過させることにより被塗装物
の表面に塗膜を形成せしめる塗装方法である。フローコ
ート塗装方法を用いると、例えば平板状の被塗装物を連
続的に効率良く塗装することができる。このため、フロ
ーコート塗装方法は例えば自動車部品などの量産品の塗
装などに広く用いられている。[Prior Art] The flow coating method is a method in which a paint of a single composition is poured down in the form of a thin curtain of a constant width, and the object to be painted is passed through the curtain-like paint, thereby forming a coating film on the surface of the object. This is a coating method that allows the formation of When the flow coat coating method is used, for example, a flat plate-shaped object can be coated continuously and efficiently. For this reason, the flow coat coating method is widely used, for example, for coating mass-produced products such as automobile parts.
【０００３】フローコート塗装方法において、被塗装物
や塗料の性状に応じた種々の変法や該方法に用いる装置
が提案されている。例えば実開昭６１−２５９８０号公
報には、塗料供給ヘッド内に塗料を吐出させ、前記ヘッ
ド内に形成した塗料吐出方向と同方向のスリットよりカ
ーテン状に塗料を流し落とす塗料の供給装置において、
前記吐出側を疎としその反対側が密となる間隔の穴を形
成したフィルターを、前記塗料供給ヘッド内に設けた塗
料供給装置が開示されている。又、実開昭６３−８２４
７４号公報には、カーテン状に塗料を流し落とすための
コーターヘッドの塗料の流出口であるフローエッヂの上
部に、正逆回転可能な流量調節用のロールを設けた塗装
装置が開示されている。[0003] In the flow coating method, various modifications and apparatuses for use in the method have been proposed depending on the properties of the object to be coated and the paint. For example, Japanese Utility Model Application Publication No. 61-25980 discloses a paint supply device that discharges paint into a paint supply head and allows the paint to flow in a curtain shape from a slit formed in the head in the same direction as the paint discharge direction.
A paint supply device is disclosed in which a filter is provided in the paint supply head, in which holes are formed with sparsely spaced holes on the discharge side and densely spaced on the opposite side. Also, Utsukai Showa 63-824
Publication No. 74 discloses a coating device in which a roll for controlling the flow rate that can be rotated in forward and reverse directions is provided above the flow edge, which is the outlet of the paint of the coater head for pouring off the paint in a curtain-like manner. .
【０００４】0004
【発明が解決しようとする課題】被塗装物が平板状であ
る場合には、その平面部は従来のフローコート塗装方法
により所定の膜厚に具合良く塗装することができる。し
かしながら、被塗装物が立体形状で立ち面部（カーテン
状の塗料の流れ落ちる方向とほぼ同一方向の面部）を有
する場合には、立ち面部はその上に塗布された塗料が流
れ落ち易く、一回のフローコート塗装では所定の膜厚が
得られない。又、開口部を有する被塗装物を従来のフロ
ーコート塗装方法で塗装すると、開口部では塗料は被塗
装物に塗布されることなく流れ落ちて回収される。そし
て、回収された塗料は再使用のためシンナー等の粘度調
整剤を追加する必要があるので、回収された塗料の量が
多くなると塗料の再生コストが高くなる。又、シンナー
等の有機溶剤の使用量が増加すると、有害な有機溶剤ガ
スの発生量も多くなり好ましくない。[Problems to be Solved by the Invention] When the object to be coated is in the shape of a flat plate, the flat surface can be coated to a predetermined film thickness using the conventional flow coat coating method. However, if the object to be painted is three-dimensional and has an upright surface (a surface that runs in almost the same direction as the curtain-like paint flowing down), the paint applied on the upright surface tends to run off, and the paint applied on the upright surface tends to flow down once. The specified film thickness cannot be obtained with coat painting. Furthermore, when an object to be painted having an opening is painted by the conventional flow coating method, the paint flows down and is collected at the opening without being applied to the object. Since it is necessary to add a viscosity modifier such as thinner to the recovered paint for reuse, the cost of recycling the paint increases as the amount of recovered paint increases. Furthermore, if the amount of organic solvent such as thinner used increases, the amount of harmful organic solvent gas generated also increases, which is undesirable.
【０００５】前記実開昭６１−２５９８０号公報及び実
開昭６３−８２４７４号公報に開示された装置は、何れ
もカーテン状の塗料を均一に且つ安定して流し落とすた
めの装置である。
それ故、これらの装置を用いても、立ち面部を平面部と
同様の膜厚に一工程で塗装することはできない。又、被
塗装物が開口部を有する場合には、回収される塗料の量
が多くなる。[0005] The devices disclosed in the above-mentioned Japanese Utility Model Application Publication No. 61-25980 and Japanese Utility Model Application Publication No. 63-82474 are devices for uniformly and stably pouring off curtain-like paint. Therefore, even if these devices are used, it is not possible to coat the vertical surface portion to the same thickness as the flat surface portion in one step. Further, when the object to be painted has an opening, the amount of paint to be recovered increases.
【０００６】本発明は前記従来技術の問題点を解決する
ためのものである。本発明の目的は、被塗装物の性状に
応じてカーテン状の塗料の流れ落ちる状態やその性状を
調整することが可能であり、塗装効率が高く且つ被塗装
物の立ち面部も平面部と同様の膜厚に一工程で塗装する
ことができるフローコート塗装方法を提供することにあ
る。The present invention is intended to solve the problems of the prior art. The object of the present invention is to be able to adjust the falling state and properties of a curtain-like paint according to the properties of the object to be painted, to achieve high coating efficiency, and to achieve the same effect on the vertical surfaces of the objects to be painted as on the flat surfaces. An object of the present invention is to provide a flow coat coating method capable of coating a thick film in one step.
【０００７】すなわち本発明は、塗料を一定幅の薄いカ
ーテン状に流し落とし、被塗装物をそのカーテン状の塗
料を通過させることにより被塗装物の表面に塗膜を形成
せしめるフローコート塗装方法であって、前記カーテン
状の塗料を複数条に分割し、各条の塗料の吐出状態及び
性状を被塗装物の各部の塗装すべき状態に応じて変化せ
しめるという特徴を有している。That is, the present invention is a flow coat coating method in which paint is poured down in a thin curtain-like manner with a constant width, and a paint film is formed on the surface of the workpiece by passing the paint through the curtain-like paint. The curtain-shaped paint is divided into a plurality of strips, and the discharge state and properties of each strip of paint are changed depending on the state of each part of the object to be coated.
【０００８】本発明の方法で使用することができる塗料
は、この分野で慣用の塗料例えば各種樹脂塗料であって
よい。The paints that can be used in the process of the invention can be the paints customary in this field, such as various resin paints.
【０００９】塗料を一定幅の薄いカーテン状に流し落と
すためには、所定幅のスリットを有する容器（ヘッド）
に塗料を導入するが、この際ヘッドを長手方向に複数に
分割することによりそれから流れ落ちるカーテン状の塗
料を複数条に分割する。ヘッドの大きさや形状は被塗装
物の大きさや形状、塗料の性状などに応じて適宜選択す
る。又、ヘッドの分割数や各分割ヘッドのスリット長さ
の比率も被塗装物の大きさや形状、及び被塗装物の各部
に対する目的とする塗膜の厚さなどに応じて適宜選択す
る。[0009] In order to pour off the paint in a thin curtain of a certain width, a container (head) having a slit of a certain width is used.
At this time, the head is divided into a plurality of parts in the longitudinal direction, thereby dividing the curtain-like paint that flows down from the head into a plurality of strips. The size and shape of the head are appropriately selected depending on the size and shape of the object to be coated, the properties of the paint, etc. Further, the number of head divisions and the ratio of the slit lengths of each divided head are appropriately selected depending on the size and shape of the object to be coated, and the desired thickness of the coating film for each part of the object to be coated.
【００１０】被塗装物をカーテン状の塗料を通過させる
ためには、被塗装物を例えばベルトコンベア上に載置し
て流れ落ちる塗料の下を移動させることにより行う。[0010] In order to cause the object to be coated to pass through the curtain-like paint, the object to be coated is placed on, for example, a belt conveyor and moved under the falling paint.
【００１１】前記ヘッドの下には被塗装物に塗布されな
かった塗料を回収するための回収装置を設ける。[0011] A recovery device is provided below the head for recovering paint that has not been applied to the object to be coated.
【００１２】0012
【作用】長手方向に複数に分割したヘッドのうち幾つか
のものに塗料を供給し他のヘッドには塗料を供給しない
ことにより又は複数に分割したヘッドの各々に対する塗
料の供給量を調整することにより各条の塗料の吐出状態
を、或いは複数に分割したヘッドの各々に対する塗料の
性状例えば粘度、組成等を調整することにより塗料の性
状を、被塗装物の各部の塗装すべき状態に応じて変化せ
しめることにより、被塗装物の好ましい塗装状態を得る
ことができる。[Operation] By supplying paint to some of the heads divided into a plurality of heads in the longitudinal direction and not supplying paint to other heads, or adjusting the amount of paint supplied to each of the heads divided into a plurality of heads. By adjusting the discharge state of each strip of paint, or by adjusting the properties of the paint for each of the divided heads, such as viscosity and composition, the properties of the paint can be adjusted according to the state of each part of the object to be coated. By changing the amount, it is possible to obtain a preferable coating state of the object to be coated.
【００１３】[0013]
【実施例】以下の実施例により、本発明を更に詳細に説
明する。EXAMPLES The present invention will be explained in more detail with the following examples.
【００１４】実施例１Example 1
【００１５】図１に本発明の方法の説明図を示す。水平
面１、立ち面２，３及び開口部９を有する被塗装物４を
ベルトコンベア８上に載置して図中矢印方向に搬送し、
分割式ヘッド５から塗料７を一定幅の薄いカーテン状に
流し落として被塗装物４を塗装するに際して、分割した
各ヘッドからの塗料の吐出の有無及びその粘度を最適に
調整する。被塗装物４に塗布されなかった塗料７は回収
装置６により回収され、図中矢印方向に移送される。FIG. 1 shows an explanatory diagram of the method of the present invention. A workpiece 4 having a horizontal surface 1, vertical surfaces 2, 3, and an opening 9 is placed on a belt conveyor 8 and conveyed in the direction of the arrow in the figure,
When painting an object 4 by pouring paint 7 from a divided head 5 in a thin curtain shape of a constant width, whether or not the paint is discharged from each divided head and its viscosity are optimally adjusted. The paint 7 that has not been applied to the object to be painted 4 is collected by a collection device 6 and transported in the direction of the arrow in the figure.
【００１６】被塗装物４としての自動車用樹脂バンパー
を、塗料７としてウレタンラッカー（１液タイプ）を用
い、被塗装物４の送り速度１ｍ／秒及び塗料７の流量２
００ｇ／秒でフローコート塗装した。結果を表１に示す
。An automobile resin bumper is used as the object 4 to be painted, urethane lacquer (one-liquid type) is used as the paint 7, and the feed speed of the object 4 is 1 m/sec and the flow rate of the paint 7 is 2.
Flow coating was applied at 00g/sec. The results are shown in Table 1.
【００１７】[0017]
【表１】[Table 1]
【００１８】実験Ｎｏ１は従来の一体型ヘッドと同様に
、被塗装物４の開口部９の有無に係わらずヘッドＮｏ１
−８から常時塗料７を流し落としてフローコート塗装し
た例である。この場合には、ヘッドＮｏ４及び５から流
し落とされた塗料７は開口部９を通り抜けて被塗装物４
に塗布されることなく回収装置６により回収された。Experiment No. 1 is the same as the conventional integrated head, regardless of the presence or absence of the opening 9 in the object 4.
This is an example in which paint 7 was constantly poured off from -8 and flow coated. In this case, the paint 7 poured off from heads Nos. 4 and 5 passes through the opening 9 and passes through the object 4 to be painted.
It was collected by the collection device 6 without being coated on the surface.
【００１９】実験Ｎｏ２では、開口部９が分割式ヘッド
５の真下を通過中はヘッドＮｏ４及び５から塗料７の流
れを遮断するため、回収装置６により回収される塗料７
の量を実験Ｎｏ１に比べて半減させることができた。In experiment No. 2, the paint 7 collected by the collection device 6 was blocked because the opening 9 blocked the flow of the paint 7 from the heads Nos. 4 and 5 while it was passing directly under the split head 5.
We were able to reduce the amount by half compared to Experiment No.1.
【００２０】実施例２Example 2
【００２１】開口部９を有せず且つ立ち面２及び３が各
々ヘッドＮｏ２及び７の真下から各々ヘッドＮｏ１及び
８の側に傾斜していること以外は実施例１の被塗装物４
と同様の形状の被塗装物を用い、各々の分割ヘッドでフ
ォードカップＮｏ４粘度の異なる塗料７を用いたこと以
外は実施例１と同様にしてフローコート塗装した。結果
を表２に示す。The object to be coated 4 of Example 1 except that it does not have the opening 9 and that the vertical surfaces 2 and 3 are inclined from directly below the heads Nos. 2 and 7 to the sides of the heads Nos. 1 and 8, respectively.
Flow coat coating was carried out in the same manner as in Example 1, except that paint 7 having a different viscosity of Ford Cup No. 4 was used for each split head using a workpiece having the same shape as in Example 1. The results are shown in Table 2.
【００２２】[0022]
【表２】[Table 2]
【００２３】表１において、実験Ｎｏ３は従来通りに被
塗装物４全体を塗料７でフローコート塗装した例である
。図２に示す如く、この場合は被塗装物４の水平面１の
上に形成された塗膜１０の膜厚は１５μｍであるのに対
して、立ち面２の上に形成された塗膜１１の膜厚は５μ
ｍであり、塗膜１０と同様の膜厚が得られない。そこで
実験Ｎｏ４の様にヘッドＮｏ１，２，７，８の塗料粘度
を１６″とすると、立ち面２の上に形成された塗膜１１
の膜厚は１０μｍとなり、更に実験Ｎｏ５の様にヘッド
Ｎｏ１，２，７，８の塗料粘度を１８″とすると、図３
に示す如く立ち面２の上に形成された塗膜１２の膜厚は
１５μｍとなり、水平面１の上に形成された塗膜１０と
同様の膜厚が得られた。In Table 1, Experiment No. 3 is an example in which the entire object 4 to be coated is flow-coated with paint 7 in the conventional manner. As shown in FIG. 2, in this case, the thickness of the coating film 10 formed on the horizontal surface 1 of the object 4 is 15 μm, whereas the thickness of the coating film 11 formed on the vertical surface 2 is 15 μm. Film thickness is 5μ
m, and a film thickness similar to that of coating film 10 cannot be obtained. Therefore, if the paint viscosity of heads No. 1, 2, 7, and 8 is set to 16" as in experiment No. 4, the paint film 11 formed on the vertical surface 2
The film thickness is 10 μm, and if the paint viscosity of heads Nos. 1, 2, 7, and 8 is 18'' as in experiment No. 5, then Fig. 3
As shown in the figure, the thickness of the coating film 12 formed on the vertical surface 2 was 15 μm, which was the same thickness as the coating film 10 formed on the horizontal surface 1.
【００２４】[0024]
【発明の効果】本発明のフローコート塗装方法は、カー
テン状の塗料を複数条に分割し、各条の塗料の吐出状態
及び性状を被塗装物の各部の塗装すべき状態に応じて変
化せしめるため、被塗装物に開口部が存在する場合には
開口部に対応するヘッドからの塗料の流し落としを中断
することにより回収される塗料の量を低減し、塗料の無
駄を省き且つ塗装効率を向上させることができる。又、
本発明の方法を用いることにより例えば立ち面部におい
ても平面部と同様の膜厚に一工程で塗装することが可能
となり、どの様な性状の被塗装物の場合でも所望の膜厚
での塗装を容易に行うことができるので高品質の製品を
生産性良く得ることができる。[Effects of the Invention] The flow coat coating method of the present invention divides a curtain-like paint into multiple strips, and changes the discharge state and properties of the paint in each strip depending on the condition of each part of the object to be coated. Therefore, if there is an opening in the object to be painted, the amount of paint collected is reduced by interrupting the flow of paint from the head corresponding to the opening, which reduces waste of paint and improves painting efficiency. can be improved. or,
By using the method of the present invention, for example, it is possible to coat vertical surfaces to the same thickness as flat surfaces in one step, and the desired thickness can be applied to objects of any type. Since it is easy to perform, high-quality products can be obtained with good productivity.
【図１】本発明のフローコート塗装方法の説明図である
。FIG. 1 is an explanatory diagram of the flow coat coating method of the present invention.
【図２】本発明の方法により塗装した被塗装物の一例の
断面図である。FIG. 2 is a cross-sectional view of an example of an object to be coated by the method of the present invention.
【図３】本発明の方法により塗装した被塗装物の他の例
の断面図である。FIG. 3 is a sectional view of another example of an object to be coated coated by the method of the present invention.
１ 水平面 ２，３ 立ち面 ４ 被塗装物 ５ 分割式ヘッド ６ 回収装置 ７ 塗料 ８ ベルトコンベア ９ 開口部 １０，１１，１２ 塗膜 1 Horizontal surface 2, 3 Elevation 4 Object to be painted 5 Split head 6 Recovery device 7 Paint 8 Belt conveyor 9 Opening 10, 11, 12 Coating film
Claims (1)
落とし、被塗装物をそのカーテン状の塗料を通過させる
ことにより被塗装物の表面に塗膜を形成せしめるフロー
コート塗装方法であって、前記カーテン状の塗料を複数
条に分割し、各条の塗料の吐出状態及び性状を被塗装物
の各部の塗装すべき状態に応じて変化せしめることを特
徴とするフローコート塗装方法。1. A flow coat coating method in which paint is poured down in a thin curtain-like manner with a constant width, and a paint film is formed on the surface of an object to be painted by passing the paint through the curtain-like paint, comprising: A flow coat coating method characterized in that the curtain-shaped paint is divided into a plurality of strips, and the discharge state and properties of the paint in each strip are changed depending on the state of each part of the object to be coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2404891A JPH04243579A (en) | 1991-01-24 | 1991-01-24 | Flow coat painting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2404891A JPH04243579A (en) | 1991-01-24 | 1991-01-24 | Flow coat painting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04243579A true JPH04243579A (en) | 1992-08-31 |
Family
ID=12127591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2404891A Pending JPH04243579A (en) | 1991-01-24 | 1991-01-24 | Flow coat painting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04243579A (en) |
-
1991
- 1991-01-24 JP JP2404891A patent/JPH04243579A/en active Pending
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