JP2008142633A - Curtain-coating apparatus and coutain-coating method - Google Patents

Curtain-coating apparatus and coutain-coating method Download PDF

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JP2008142633A
JP2008142633A JP2006333293A JP2006333293A JP2008142633A JP 2008142633 A JP2008142633 A JP 2008142633A JP 2006333293 A JP2006333293 A JP 2006333293A JP 2006333293 A JP2006333293 A JP 2006333293A JP 2008142633 A JP2008142633 A JP 2008142633A
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steel strip
wiper member
curtain coating
paint
thick film
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JP4754467B2 (en
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Katsunori Tobisawa
克紀 飛澤
Yoshihiro Suemune
義広 末宗
Yasushi Narita
泰 成田
Shigenori Tanaka
重典 田中
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Nippon Steel Corp
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Nippon Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To properly level a thick part in the curtain-coating of a steel strip. <P>SOLUTION: The curtain-coating apparatus 1 for coating the surface of the steel strip travelling below by dropping a coating material in a curtain state is provided with a wiper member 40 moving on the surface of the steel strip H in the width direction Y of the steel strip H and pushing out the thick part B of the coating material on the surface of the steel strip H to the side of the steel strip H to level the thick part B. The wiper member 40 is formed linearly in the view from the plane and mounted to be parallel to the travelling direction X of the steel strip H. In the curtain-coating, the thick part B of the coating material is leveled by moving the wiper member 40 in the width direction Y of the steel strip H. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、塗料をカーテン状に落下させ、下方を走行する鋼帯の表面を塗装するカーテン塗装装置とカーテン塗装方法に関する。   The present invention relates to a curtain coating apparatus and a curtain coating method for coating a surface of a steel strip that travels below by dropping paint into a curtain shape.

鋼帯の表面を塗装する際には、例えばカーテン塗装方法が用いられる。このカーテン塗装方法は、カーテン塗装装置を用いて行われ、鋼帯の搬送路の上方に設けられた塗料吐出装置から塗料がカーテン状に自由落下され、搬送路上を走行する鋼帯の表面に塗布される。   When coating the surface of the steel strip, for example, a curtain coating method is used. This curtain coating method is performed using a curtain coating device, and paint is freely dropped in the form of a curtain from a paint discharge device provided above the transport path of the steel strip and applied to the surface of the steel strip traveling on the transport path. Is done.

上述のカーテン塗装装置では、通常図１８、図１９に示すように塗料吐出装置１００の下方に塗料受けパン１０１が配置されている。そして例えば塗装開始時には、先ず塗料吐出装置１００から塗料受けパン１０１にカーテン状の塗料Ａが吐出され、その後塗料Ａの吐出状態が安定してから塗料受けパン１０１を取り除いて、下方を走行する鋼帯Ｈの表面に塗料Ａが塗布されている。   In the curtain coating apparatus described above, a paint receiving pan 101 is usually disposed below the paint discharging apparatus 100 as shown in FIGS. For example, at the start of painting, first, the curtain-like paint A is discharged from the paint discharge device 100 to the paint receiving pan 101, and then the paint receiving pan 101 is removed after the discharge state of the paint A is stabilized, and the steel travels below. The paint A is applied to the surface of the belt H.

しかし、この塗料受けパン１０１を取り除いた直後には、カーテン状の塗料Ａの先頭部分に中央に向かう縮流が形成される。その塗料Ａの先頭部分が鋼帯Ｈの表面に塗布されると、その塗布部分に他の部分に比べて厚い厚膜部が形成される。この厚膜部を放置すると、その後鋼帯Ｈが加熱炉において加熱される際に、厚膜部だけが十分に乾燥されず、例えばその未乾燥の塗料が搬送路上の搬送ロールに付着して固まることがある。搬送ロールに塗料が固着すると、その後搬送ロールと接触する鋼帯Ｈの表面を疵付けることがある。また、最終的に鋼帯Ｈがコイル状に巻き取られる際に、未乾燥の塗料が接着剤の役割を果たし、鋼帯Ｈ同士が接着することがある。   However, immediately after the paint receiving pan 101 is removed, a contracted flow toward the center is formed at the leading portion of the curtain-like paint A. When the leading portion of the paint A is applied to the surface of the steel strip H, a thicker film portion is formed in the applied portion than in other portions. If this thick film part is left as it is, then when the steel strip H is heated in the heating furnace, only the thick film part is not sufficiently dried, for example, the undried paint adheres to the transport roll on the transport path and hardens. Sometimes. When the paint adheres to the transport roll, the surface of the steel strip H that comes into contact with the transport roll may be rubbed. Moreover, when the steel strip H is finally wound up in a coil shape, the undried paint may serve as an adhesive, and the steel strips H may adhere to each other.

かかる問題を解決するため、鋼帯の搬送路上に均しロールを設置し、鋼帯の表面の厚膜部を均しロールによって均す方法（特許文献１、２参照）や、鋼帯の搬送路上に均しブレードを設置し、鋼帯の表面の厚膜部を均しブレードによって均す方法（特許文献２参照）が提案されている。乾燥前の定常部の最大厚みが４０μｍ程度で、厚膜部の最大厚みが６０μｍ程度の塗装膜を形成する場合には、これらの方法は有効であった。   In order to solve this problem, a leveling roll is installed on the conveying path of the steel strip, and the thick film part on the surface of the steel strip is smoothed by the leveling roll (see Patent Documents 1 and 2), A method has been proposed in which a leveling blade is installed on the road and the thick film portion on the surface of the steel strip is leveled by the leveling blade (see Patent Document 2). These methods were effective when forming a coating film having a maximum thickness of about 40 μm in the stationary portion before drying and a maximum thickness of about 60 μm in the thick film portion.

特開平７−１１６５８８号公報Japanese Patent Laid-Open No. 7-116588 特開平７−８８７８号公報Japanese Patent Laid-Open No. 7-8878

しかしながら、鋼帯の表面に例えば４０μｍ（乾燥前のウェット状態）を超えるような厚い塗装膜を形成する場合には、その分上述の厚膜部も厚くなる。例えば８０μｍの塗装膜を形成する場合には、厚膜部の厚みが１００〜５００μｍにもなる。このように厚膜部が厚くなった場合に上述の均しロールを用いると、均しロールと鋼帯の表面との接触部分において厚膜部の多量の塗料が堰き止められて滞留してしまう。この結果、その滞留した塗料の一部がその場で固まって均しロールに付着し、その付着した塗料が均しロールと共に回転して、その後均しロールに送られる鋼帯の塗装面を疵付けてしまう。   However, when a thick coating film exceeding 40 μm (wet state before drying), for example, is formed on the surface of the steel strip, the above-described thick film portion is also thickened accordingly. For example, in the case of forming a coating film of 80 μm, the thickness of the thick film part is 100 to 500 μm. When the above-mentioned leveling roll is used when the thick film portion becomes thick in this way, a large amount of the coating material in the thick film portion is blocked and stays at the contact portion between the leveling roll and the surface of the steel strip. . As a result, a part of the accumulated paint solidifies on the spot and adheres to the leveling roll, and the adhered paint rotates with the leveling roll, and then the coated surface of the steel strip sent to the leveling roll is reduced. I will put it.

また、上述の均しブレードを用いた場合も、均しロールの場合と同様に均しブレードと鋼帯の接触部分において厚膜部の多量の塗料が堰き止められて滞留する。そして、その滞留した塗料の一部が固まって均しブレードを押し退けて、厚膜の状態のまま下流側に送られてしまう。厚膜のまま下流に送られると、上述のように搬送ロールの汚染や鋼帯同士の接着が起こる。また、滞留した塗料の一部が均しブレードに固着し、その後均しブレードに送られる鋼帯の塗装面を疵付けることもある。   Also, when the above-described leveling blade is used, a large amount of paint in the thick film portion is blocked and stays at the contact portion between the leveling blade and the steel strip as in the case of the leveling roll. Then, a part of the staying paint is solidified and pushes out the leveling blade and is sent to the downstream side in a thick film state. If it is sent downstream as a thick film, contamination of the transport roll and adhesion between the steel strips occur as described above. In addition, a part of the staying paint may adhere to the leveling blade, and then the painted surface of the steel strip sent to the leveling blade may be glazed.

このように、塗装の厚みが厚くなると、上述の均しロールや均しブレードでは、塗料の厚膜部を適正に均すことができなくなる。特に、近年においては、塗装工程の集中化等の要請から複数層の液膜からなる塗料を同時に塗装する設備が増えており、鋼帯の表面に８０μｍ以上の厚い塗料を塗布することが多くなってきている。   As described above, when the coating thickness is increased, the above-described leveling roll or leveling blade cannot properly level the thick film portion of the paint. In particular, in recent years, due to demands for centralization of the painting process and the like, facilities for simultaneously coating a paint composed of a plurality of liquid films have increased, and a thick paint of 80 μm or more is often applied to the surface of a steel strip. It is coming.

本発明は、かかる点に鑑みてなされたものであり、鋼帯のカーテン塗装において、より厚い厚膜部が形成された場合であってもその厚膜部を適正に均すことができるカーテン塗装装置及びカーテン塗装方法を提供することをその目的とする。   The present invention has been made in view of the above points, and in curtain coating of a steel strip, even if a thicker thick film portion is formed, the curtain coating can properly level the thick film portion. It is an object of the present invention to provide an apparatus and a curtain coating method.

上記目的を達成するための本発明は、塗料をカーテン状に落下させ、下方を走行する鋼帯の表面を塗装するカーテン塗装装置であって、鋼帯の表面上を鋼帯の幅方向に移動し、鋼帯の表面上の塗料の厚膜部を鋼帯の側方に押し出して均すワイパー部材を有することを特徴とする。なお、「厚膜部」とは、鋼帯の表面において塗料が他の部分よりも厚くなっている部分をいう。   In order to achieve the above object, the present invention is a curtain coating apparatus that drops paint in a curtain shape and coats the surface of a steel strip that travels below, and moves on the surface of the steel strip in the width direction of the steel strip. And it has a wiper member which extrudes the thick film part of the paint on the surface of a steel strip to the side of a steel strip, and is equalized. The “thick film portion” refers to a portion where the paint is thicker than other portions on the surface of the steel strip.

本発明によれば、ワイパー部材により厚膜部を鋼帯の側方に押し出すので、厚膜部の塗料が鋼帯の表面上で滞留することがない。したがって、従来のように滞留した塗料が均しロールや均しブレードに付着することがなく、より厚い厚膜部であっても適正に除去し均すことができる。   According to the present invention, since the thick film portion is pushed out to the side of the steel strip by the wiper member, the paint of the thick film portion does not stay on the surface of the steel strip. Therefore, the staying paint does not adhere to the leveling roll or leveling blade as in the conventional case, and even a thicker thick film portion can be properly removed and leveled.

前記カーテン塗装装置は、前記ワイパー部材を鋼帯の走行方向に移動させる駆動機構を有していてもよい。   The curtain coating apparatus may have a drive mechanism that moves the wiper member in the traveling direction of the steel strip.

前記ワイパー部材は、平面から見て直線状に形成され、鋼帯の走行方向に平行に設けられていてもよい。   The wiper member may be formed in a straight line when viewed from the plane and provided in parallel with the traveling direction of the steel strip.

前記カーテン塗装装置は、前記ワイパー部材を平面から見て鋼帯の走行方向に対して斜めに傾動させる傾動機構を有していてもよい。   The curtain coating apparatus may include a tilting mechanism that tilts the wiper member obliquely with respect to the traveling direction of the steel strip as viewed from above.

前記ワイパー部材の下部は、下端に向かって細くなるテーパ状に形成されていてもよい。   The lower part of the wiper member may be formed in a tapered shape that narrows toward the lower end.

前記鋼帯の側方には、ワイパー部材によって押し出された塗料を回収する容器が設けられていてもよい。   A container for collecting the paint pushed out by the wiper member may be provided on the side of the steel strip.

前記鋼帯には、複数層の液膜からなる塗料が塗布されてもよい。   The steel strip may be coated with a coating composed of a plurality of liquid films.

別の観点による本発明は、塗料をカーテン状に落下させ、下方を走行する鋼帯の表面を塗装するカーテン塗装方法であって、ワイパー部材を鋼帯の表面上の幅方向に移動させて、鋼帯の表面上の塗料の厚膜部を鋼帯の側方に押し出して均すことを特徴とする。   Another aspect of the present invention is a curtain coating method for dropping a paint in a curtain shape and coating the surface of a steel strip that travels below, moving a wiper member in the width direction on the surface of the steel strip, The thick film portion of the paint on the surface of the steel strip is pushed out to the side of the steel strip and leveled.

前記ワイパー部材を鋼帯の走行方向にも移動させながら、前記塗料の厚膜部を均すようにしてもよい。   The thick film portion of the paint may be leveled while moving the wiper member also in the traveling direction of the steel strip.

鋼帯の走行速度と同じ速度で前記ワイパー部材を鋼帯の走行方向に移動させるようにしてもよい。   The wiper member may be moved in the traveling direction of the steel strip at the same speed as the traveling speed of the steel strip.

前記ワイパー部材を平面から見て鋼帯の走行方向と平行にし、その状態で前記ワイパー部材を鋼帯の幅方向に移動させて前記厚膜部を均すようにしてもよい。   The wiper member may be parallel to the traveling direction of the steel strip as viewed from above, and the thick film portion may be leveled by moving the wiper member in the width direction of the steel strip in this state.

前記ワイパー部材を平面から見て上流側より下流側の部分が突出するように鋼帯の走行方向に対して傾斜させ、その状態で前記ワイパー部材を鋼帯の幅方向に移動させて前記厚膜部を均すようにしてもよい。   The thick film is formed by inclining the wiper member with respect to the traveling direction of the steel strip so that a portion on the downstream side from the upstream side protrudes when viewed from a plane, and moving the wiper member in the width direction of the steel strip in this state. The parts may be leveled.

前記ワイパー部材の下流側の端部が鋼帯の幅方向の端部に到達した後、前記ワイパー部材の上流側の部分を引き続き前記鋼帯の幅方向に移動させ、前記ワーパー部材を鋼帯の走行方向に平行に戻すようにしてもよい。   After the downstream end of the wiper member reaches the end in the width direction of the steel strip, the upstream portion of the wiper member is continuously moved in the width direction of the steel strip, and the warper member is moved to the steel strip. You may make it return in parallel with a running direction.

前記鋼帯には、複数層の液膜からなる塗料が塗布されてもよい。   The steel strip may be coated with a coating composed of a plurality of liquid films.

本発明によれば、より厚い厚膜部であっても適正に均すことができる。   According to the present invention, even a thicker film portion can be properly leveled.

以下、本発明の好ましい実施の形態について説明する。図１は、本実施の形態にかかるカーテン塗装装置１の構成を示す説明図である。   Hereinafter, preferred embodiments of the present invention will be described. FIG. 1 is an explanatory diagram showing a configuration of a curtain coating apparatus 1 according to the present embodiment.

カーテン塗装装置１は、例えば塗料吐出装置１０と、塗料受けパン１１と、塗料均し装置１２を備えている。   The curtain coating apparatus 1 includes, for example, a paint discharging device 10, a paint receiving pan 11, and a paint leveling device 12.

塗料吐出装置１０は、鋼帯Ｈの搬送路の上方に設けられている。塗料吐出装置１０は、例えば円弧状の液膜形成面２０を有し、その液膜形成面２０には、例えば３つのスリット状の塗料吐出口２０ａ、２０ｂ、２０ｃが形成されている。塗料吐出口２０ａ〜２０ｃは、液膜形成面２０の上部から下部に向けて順に形成されており、各塗料吐出口２０ａ〜２０ｃから吐出された塗料が液膜形成面２０に沿って流れ、最終的に３層からなる塗料の液膜を形成できる。液膜形成面２０の下端には、カーテンガイド２１が取り付けられており、液膜形成面２０の下端からカーテン状に落下する塗料Ａの幅方向の両端面を押さえて塗料Ａをガイドできる。   The paint discharge device 10 is provided above the conveying path of the steel strip H. The coating material discharge apparatus 10 has, for example, an arc-shaped liquid film forming surface 20, and the liquid film forming surface 20 has, for example, three slit-shaped coating material discharge ports 20 a, 20 b, and 20 c. The paint discharge ports 20a to 20c are formed in order from the upper part to the lower part of the liquid film forming surface 20, and the paint discharged from each paint discharge port 20a to 20c flows along the liquid film forming surface 20, and finally Thus, it is possible to form a three-layer coating liquid film. A curtain guide 21 is attached to the lower end of the liquid film forming surface 20, and the paint A can be guided by pressing both end surfaces in the width direction of the paint A falling in a curtain shape from the lower end of the liquid film forming surface 20.

塗料受けパン１１は、液膜形成面２０の下方に設けられている。塗料受けパン１１は、例えば駆動部３０により水平方向に移動自在であり、液膜形成面２０から落下するカーテン状の塗料Ａを受け止める位置と受け止めない位置との間を移動できる。   The paint receiving pan 11 is provided below the liquid film forming surface 20. The paint receiving pan 11 is movable in the horizontal direction, for example, by the drive unit 30 and can move between a position where the curtain-like paint A falling from the liquid film forming surface 20 is received and a position where it is not received.

塗料均し装置１２は、塗料吐出装置１０よりも搬送路の下流側に設けられている。塗料均し装置１２は、例えば図２及び図３に示すように鋼帯Ｈの表面上の塗料の厚膜部Ｂを鋼帯Ｈの側方に押し出すためのワイパー部材４０と、ワイパー部材４０の駆動機構４１と、押し出された塗料を回収する容器４２などを備えている。   The paint leveling device 12 is provided on the downstream side of the transport path from the paint discharge device 10. For example, as shown in FIGS. 2 and 3, the paint leveling device 12 includes a wiper member 40 for extruding a thick film portion B of the paint on the surface of the steel strip H to the side of the steel strip H, and a wiper member 40. A drive mechanism 41 and a container 42 for collecting the extruded paint are provided.

ワイパー部材４０は、例えば図４に示すように板形状を有し、板の長方形の表裏面が側方を向くように立設されている。ワイパー部材４０は、例えばフッ素樹脂を被覆した銅などにより形成されている。ワイパー部材４０は、厚みｄが例えば５ｍｍ程度の薄板状に形成され、下部に先細のテーパ部４０ａが形成されている。これによってワイパー部材４０の下部は、弾性変形しやすく、可撓性を有している。テーパ部４０ａは、例えば片側の側面のみに形成されている。また、ワイパー部材４０の高さｈは、予測される厚膜部Ｂの最大厚みの３倍以上の例えば５０ｍｍ程度に形成されている。ワイパー部材４０の長さＬは、例えば５００ｍｍ程度に形成されている。   The wiper member 40 has a plate shape as shown in FIG. 4, for example, and is erected so that the rectangular front and back surfaces of the plate face sideways. The wiper member 40 is made of, for example, copper coated with a fluororesin. The wiper member 40 is formed in a thin plate shape having a thickness d of, for example, about 5 mm, and a tapered portion 40a is formed at the lower portion. Accordingly, the lower portion of the wiper member 40 is easily elastically deformed and has flexibility. The taper portion 40a is formed only on one side surface, for example. Further, the height h of the wiper member 40 is formed to be, for example, about 50 mm, which is three times or more the maximum thickness of the thick film portion B to be predicted. The length L of the wiper member 40 is, for example, about 500 mm.

ワイパー部材４０は、図２に示すように平面から見て鋼帯Ｈの走行方向（搬送方向）Ｘと平行に設けられている。ワイパー部材４０は、駆動機構４１によって鋼帯Ｈの幅方向Ｙに移動できる。駆動機構４１は、例えば図３に示すように鋼帯Ｈの上方を幅方向Ｙに延びるレール５０と、そのレール５０上を給電により往復移動可能なスライド部材５１を有している。レール５０は、鋼帯Ｈの幅よりも長く形成されている。ワイパー部材４０は、テーパ部４０ａを内側に向けた状態でスライド部材５１に支持されており、スライド部材５１の移動により鋼帯Ｈの一方の側方にある待機位置Ｐから鋼帯Ｈの表面上を通って鋼帯Ｈの他方の側方まで移動できる。また、ワイパー部材４０は、例えばスライド部材５１の伸縮により高さ調節可能である。かかる構成により、ワイパー部材４０は、鋼帯Ｈの表面に接触しながら鋼帯Ｈの表面上を幅方向Ｙに移動し、鋼帯Ｈの表面の塗料Ａの厚膜部Ｂを鋼帯Ｈの側方に押し出すことができる。   As shown in FIG. 2, the wiper member 40 is provided in parallel with the traveling direction (conveying direction) X of the steel strip H as viewed from above. The wiper member 40 can be moved in the width direction Y of the steel strip H by the drive mechanism 41. For example, as shown in FIG. 3, the drive mechanism 41 includes a rail 50 that extends in the width direction Y above the steel strip H, and a slide member 51 that can reciprocate on the rail 50 by power feeding. The rail 50 is formed longer than the width of the steel strip H. The wiper member 40 is supported by the slide member 51 with the taper portion 40a facing inward, and on the surface of the steel strip H from the standby position P on one side of the steel strip H by the movement of the slide member 51. It can move through to the other side of the steel strip H. Further, the height of the wiper member 40 can be adjusted by, for example, expansion and contraction of the slide member 51. With this configuration, the wiper member 40 moves in the width direction Y on the surface of the steel strip H while in contact with the surface of the steel strip H, and the thick film portion B of the paint A on the surface of the steel strip H is moved to the surface of the steel strip H. Can be pushed to the side.

容器４２は、例えばワイパー部材４０の待機位置Ｐと反対側の鋼帯Ｈの側方に設けられ、鋼帯Ｈの表面から押し出された塗料を回収できる。   The container 42 is provided, for example, on the side of the steel strip H opposite to the standby position P of the wiper member 40, and can collect the paint pushed out from the surface of the steel strip H.

次に、上述のカーテン塗装装置１を用いて行われる鋼帯Ｈに対するカーテン塗装プロセスについて説明する。   Next, a curtain coating process for the steel strip H performed using the above-described curtain coating apparatus 1 will be described.

先ず、塗料受けパン１１が液膜形成面２０の下方に位置した状態（図１の点線に示す状態）で、塗料吐出装置１０の各塗料吐出口２０ａ〜２０ｃからそれぞれ異なる塗料が吐出され、液膜形成面２０の下端から３層からなるカーテン状の塗料Ａが落下し、塗料受けパン１１に受け止められる。カーテン状の塗料Ａの挙動が安定した後、塗料受けパン１１が図１に示すように水平方向に退避し、カーテン状の塗料Ａが、下方を走行する鋼帯Ｈの表面上に落下し塗布され始める。このとき、鋼帯Ｈの表面上に塗布された塗料Ａの先頭には、他の部分よりも厚い厚膜部Ｂが形成される。厚膜部Ｂは、例えば鋼帯Ｈの中央付近に形成され、厚みが例えば１００μｍ以上になっている。   First, in a state where the paint receiving pan 11 is positioned below the liquid film forming surface 20 (a state shown by a dotted line in FIG. 1), different paints are discharged from the paint discharge ports 20a to 20c of the paint discharge device 10, respectively. The curtain-like paint A consisting of three layers falls from the lower end of the film forming surface 20 and is received by the paint receiving pan 11. After the behavior of the curtain-like paint A is stabilized, the paint receiving pan 11 is withdrawn in the horizontal direction as shown in FIG. 1, and the curtain-like paint A drops and is applied onto the surface of the steel strip H traveling below. Start to be. At this time, a thick film portion B thicker than other portions is formed at the top of the coating material A applied on the surface of the steel strip H. The thick film portion B is formed near the center of the steel strip H, for example, and has a thickness of, for example, 100 μm or more.

鋼帯Ｈの表面の塗料の厚膜部Ｂが移動し、厚膜部Ｂが塗料均し装置１２に近づくと、図５に示すようにワイパー部材４０が待機位置Ｐから鋼帯Ｈの幅方向Ｙに例えば一定の速度で移動し始める。このときワイパー部材４０は、鋼帯Ｈの走行方向Ｘに平行の状態で移動する。そして、厚膜部Ｂが塗料均し装置１２まで移動すると、例えば図６に示すように厚膜部Ｂにワイパー部材４０の上流側の側面が接触する。そして、図７に示すようにワイパー部材４０は、引き続き鋼帯Ｈの幅方向Ｙに移動し、厚膜部Ｂを掻き取る。このとき厚膜部Ｂは、鋼帯Ｈと共に走行方向Ｘに移動している。そして、図８に示すように厚膜部Ｂがワイパー部材４０の下流側の端部から外れる前に、ワイパー部材４０が鋼帯Ｈの側端部に到達し、厚膜部Ｂが鋼帯Ｈの側方に押し出される。鋼帯Ｈの側方に押し出された厚膜部Ｂは、容器４２に落下して回収される。こうして、塗料の先頭の厚膜部Ｂが除去され、塗布膜の厚みが均される。   When the thick film portion B of the paint on the surface of the steel strip H moves and the thick film portion B approaches the paint leveling device 12, the wiper member 40 moves from the standby position P to the width direction of the steel strip H as shown in FIG. For example, Y starts to move at a constant speed. At this time, the wiper member 40 moves in a state parallel to the traveling direction X of the steel strip H. When the thick film portion B moves to the paint leveling device 12, the upstream side surface of the wiper member 40 contacts the thick film portion B, for example, as shown in FIG. Then, as shown in FIG. 7, the wiper member 40 continues to move in the width direction Y of the steel strip H and scrapes off the thick film portion B. At this time, the thick film portion B moves in the traveling direction X together with the steel strip H. Then, as shown in FIG. 8, before the thick film portion B comes off from the downstream end portion of the wiper member 40, the wiper member 40 reaches the side end portion of the steel strip H, and the thick film portion B becomes the steel strip H. Extruded to the side. The thick film portion B pushed out to the side of the steel strip H falls into the container 42 and is collected. In this way, the leading thick film portion B of the paint is removed, and the thickness of the coating film is leveled.

本実施の形態によれば、ワイパー部材４０が鋼帯Ｈの幅方向Ｙに移動して厚膜部Ｂを押し出すので、例えば１００μｍ以上の厚い厚膜部Ｂであっても、従来の均しロールや均しブレードを用いた場合のように鋼帯Ｈの表面に塗料が滞留することがなく、厚膜部Ｂを適正に均すことができる。特に近年需要が高まっている複数層の液膜からなる塗料を塗布するカーテン塗装においても、厚膜部Ｂを適正に除去し均すことができるようになるメリットは大きい。   According to the present embodiment, since the wiper member 40 moves in the width direction Y of the steel strip H and pushes out the thick film portion B, for example, even if it is a thick film portion B having a thickness of 100 μm or more, a conventional leveling roll The thick film portion B can be properly leveled without any paint staying on the surface of the steel strip H as in the case of using a leveling blade. In particular, even in curtain coating in which a coating composed of a plurality of layers of liquid film, which has been increasing in demand in recent years, there is a great merit that the thick film portion B can be properly removed and leveled.

また、ワイパー部材４０の下部にテーパ部４０ａを形成したので、例えば鋼帯Ｈの表面形状に追従してワイパー部材４０の下部が弾性変形して撓む。この結果、例えば走行中の鋼帯Ｈの表面形状が変形して湾曲しても、ワイパー部材４０と鋼帯Ｈの表面との接触を安定的に維持し、鋼帯Ｈの表面の厚膜部Ｂを確実に除去できる。   Moreover, since the taper part 40a was formed in the lower part of the wiper member 40, for example, following the surface shape of the steel strip H, the lower part of the wiper member 40 is elastically deformed and bent. As a result, for example, even when the surface shape of the running steel strip H is deformed and curved, the contact between the wiper member 40 and the surface of the steel strip H is stably maintained, and the thick film portion on the surface of the steel strip H is maintained. B can be reliably removed.

鋼帯Ｈの側方に容器４２を設けたので、押し出した厚膜部Ｂの塗料を適正に回収できる。   Since the container 42 is provided on the side of the steel strip H, the paint of the extruded thick film portion B can be properly collected.

本実施の形態によれば、ワイパー部材４０を平面から見て鋼帯Ｈの走行方向Ｘに平行に配置し、そのワイパー部材４０を平行に移動させて厚膜部Ｂを掻き取ったので、厚膜部Ｂがワイパー部材４０の側面に滞在している時間を、例えばワイパー部材４０を斜めに配置した場合に比べて長くすることができる。以下に、この効果を裏付ける実験結果を示す。   According to the present embodiment, the wiper member 40 is disposed in parallel with the traveling direction X of the steel strip H when viewed from above, and the thick film portion B is scraped off by moving the wiper member 40 in parallel. The time during which the film part B stays on the side surface of the wiper member 40 can be made longer than that when, for example, the wiper member 40 is disposed obliquely. The experimental results supporting this effect are shown below.

図９に示すように走行する鋼帯Ｈに対し、ワイパー部材４０を０°（鋼帯の幅方向）、４５°、６０°の角度になるように配置し、各角度の場合について、鋼帯Ｈの表面に塗料の液溜まりＣを流し、ワイパー部材４０に衝突させた。実験は、５０ｍ／ｍｉｎの速度の鋼帯Ｈに、２５０ｇの塗料の液溜まりＣを流して行った。なお、上述の本実施の形態では、塗料の厚膜部（液溜まり）に対しワイパー部材４０側を動かして衝突させているが、この実験では、塗料の液溜まりＣ側を動かしてワイパー部材４０に衝突させている。また、この実験において、ワイパー部材４０の長さＬに相当する鋼帯Ｈの幅は、５００ｍｍである。   As shown in FIG. 9, the wiper member 40 is disposed at an angle of 0 ° (in the width direction of the steel strip), 45 °, and 60 ° with respect to the steel strip H that travels. A liquid pool C of paint was poured on the surface of H and collided with the wiper member 40. The experiment was conducted by flowing 250 g of the paint reservoir C through the steel strip H at a speed of 50 m / min. In the above-described embodiment, the wiper member 40 side is caused to collide against the thick film portion (liquid reservoir) of the paint, but in this experiment, the wiper member 40 is moved by moving the liquid reservoir C side of the paint. Is colliding with. In this experiment, the width of the steel strip H corresponding to the length L of the wiper member 40 is 500 mm.

この実験結果は、図１０に示すようにワイパー部材４０の側面に対して液溜まりＣが垂直に衝突する場合（ワイパー部材４０の角度が０°の場合）には、液溜まりＣがワイパー部材４０の側面に衝突してからその側面を伝って鋼帯Ｈの側端部から落下し始めるまでに２秒程度かかった。一方、４５°と６０°の斜めのワイパー部材４０の側面に対して液溜まりＣが衝突する場合には、液溜まりＣはワイパー部材４０の側面に衝突した直後から鋼帯Ｈの側端部から落下し始めている。つまり、ワイパー部材４０の側面を液溜まりＣに対して垂直に当てて掻き取った場合と、ワイパー部材４０の側面を液溜まりＣに対して斜めに当てて掻き取った場合とを比べると、前者の方がワイパー部材４０の側面に液溜まりＣが保持される時間が長くなった。   As a result of this experiment, as shown in FIG. 10, when the liquid reservoir C collides perpendicularly with the side surface of the wiper member 40 (when the angle of the wiper member 40 is 0 °), the liquid reservoir C is removed from the wiper member 40. It took about 2 seconds from the collision to the side surface of the steel strip to start dropping from the side edge of the steel strip H along the side surface. On the other hand, when the liquid pool C collides with the side surfaces of the oblique wiper member 40 at 45 ° and 60 °, the liquid pool C starts from the side end portion of the steel strip H immediately after the collision with the side surface of the wiper member 40. It is starting to fall. That is, comparing the case where the side surface of the wiper member 40 is scraped by being perpendicularly applied to the liquid reservoir C and the case where the side surface of the wiper member 40 is scraped by being obliquely applied to the liquid reservoir C are compared. In this case, the time during which the liquid pool C is held on the side surface of the wiper member 40 is longer.

上述の本実施の形態では、ワイパー部材４０を鋼帯Ｈの走行方向Ｘと平行に配置し、ワイパー部材４０を鋼帯Ｈの幅方向Ｙに移動させることにより、ワイパー部材４０の側面が厚膜部Ｂに対して垂直に当たるようにしたので、前記実験結果より、厚膜部Ｂがワイパー部材４０の側面に滞在する時間が、ワイパー部材４０を斜めにした場合に比べて長くなる。この結果、その分ワイパー部材４０の長手方向の寸法を短くすることができるので、塗装装置が小型化し、装置の省スペース化や設備コストの低減が図られる。なお、上記実験結果から、ワイパー部材４０が厚膜部Ｂに接触してからその厚膜部Ｂを鋼帯Ｈの側方に押し出すまでの時間が２秒以内になるようにワイパー部材４０を移動させてもよい。例えば鋼帯Ｈの通板速度が７０ｍｐｍで、鋼帯Ｈの幅が９６０ｍｍの場合、ワイパー部材４０の押し出し速度を１ｍ／ｓとすると、ワイパー部材４０の長さは１．２ｍｍ程度でよい。   In the above-described embodiment, the wiper member 40 is disposed in parallel with the traveling direction X of the steel strip H, and the wiper member 40 is moved in the width direction Y of the steel strip H, whereby the side surface of the wiper member 40 is thick. Since it hits perpendicularly to part B, the time for thick film part B to stay on the side of wiper member 40 becomes longer than the case where wiper member 40 is slanted from the above-mentioned experimental result. As a result, the dimension in the longitudinal direction of the wiper member 40 can be shortened accordingly, so that the coating apparatus can be downsized, and the space of the apparatus can be saved and the equipment cost can be reduced. From the above experimental results, the wiper member 40 is moved so that the time from when the wiper member 40 contacts the thick film portion B to when the thick film portion B is pushed out to the side of the steel strip H is within 2 seconds. You may let them. For example, when the sheet feeding speed of the steel strip H is 70 mpm and the width of the steel strip H is 960 mm, if the extrusion speed of the wiper member 40 is 1 m / s, the length of the wiper member 40 may be about 1.2 mm.

以上の実施の形態では、ワイパー部材４０を鋼帯Ｈの幅方向Ｙにのみ移動させていたが、鋼帯Ｈの走行方向Ｘにも移動させてもよい。   In the above embodiment, the wiper member 40 is moved only in the width direction Y of the steel strip H. However, the wiper member 40 may also be moved in the traveling direction X of the steel strip H.

かかる場合、例えば図１１に示すように塗料均し装置１２に、レール５０を鋼帯Ｈの走行方向Ｘに移動させる駆動機構６０が設けられる。駆動機構６０は、例えば鋼帯Ｈの幅方向Ｙの両側に設けられた、走行方向Ｘに沿って延びる二本のレール６１と、各レール６１に設けられたスライド部材６２などを備えている。各スライド部材６２は、レール５０の端部を保持して給電によりレール６１に沿って往復移動できる。この駆動機構６０によってレール５０を鋼帯Ｈの走行方向Ｘに移動させて、ワイパー部材４０を鋼帯Ｈの走行方向Ｘに移動できる。   In such a case, for example, as shown in FIG. 11, the paint leveling device 12 is provided with a drive mechanism 60 that moves the rail 50 in the traveling direction X of the steel strip H. The drive mechanism 60 includes, for example, two rails 61 provided on both sides in the width direction Y of the steel strip H and extending along the traveling direction X, slide members 62 provided on the rails 61, and the like. Each slide member 62 can reciprocate along the rail 61 by feeding while holding the end of the rail 50. The drive mechanism 60 moves the rail 50 in the traveling direction X of the steel strip H, and the wiper member 40 can be moved in the traveling direction X of the steel strip H.

そして、カーテン塗装プロセスでは、例えば図１２に示すように厚膜部Ｂが塗料均し装置１２まで移動し、厚膜部Ｂにワイパー部材４０の側面が接触すると、図１３に示すようにワイパー部材４０は、厚膜部Ｂを掻き取りながら、引き続き鋼帯Ｈの幅方向Ｙに移動すると共に、駆動機構６０によって鋼帯Ｈの走行方向Ｘにも移動していく。つまりワイパー部材４０は、鋼帯Ｈの走行方向Ｘに斜めに移動する。このときのワイパー部材４０の走行方向Ｘへの移動速度は、例えば鋼帯Ｈの走行速度と同程度、好ましくは同じに設定される。そして、ワイパー部材４０が鋼帯Ｈの側方の容器４２上まで移動することによって、鋼帯Ｈの表面の厚膜部Ｂが鋼帯Ｈの側方に押し出される。例えば鋼帯Ｈの通板速度が７０ｍｐｍで、鋼帯Ｈの幅が９６０ｍｍの場合、ワイパー部材４０の押し出し速度を１ｍ／ｓとすると、ワイパー部材４０の長さは５００ｍｍ程度でよい。   In the curtain coating process, for example, as shown in FIG. 12, when the thick film portion B moves to the paint leveling device 12 and the side surface of the wiper member 40 comes into contact with the thick film portion B, the wiper member as shown in FIG. 40 continues to move in the width direction Y of the steel strip H while scraping off the thick film portion B, and also moves in the running direction X of the steel strip H by the drive mechanism 60. That is, the wiper member 40 moves obliquely in the traveling direction X of the steel strip H. At this time, the moving speed of the wiper member 40 in the traveling direction X is set to be approximately the same as the traveling speed of the steel strip H, for example, preferably the same. Then, the wiper member 40 moves onto the container 42 on the side of the steel strip H, whereby the thick film portion B on the surface of the steel strip H is pushed out to the side of the steel strip H. For example, when the sheet feeding speed of the steel strip H is 70 mpm and the width of the steel strip H is 960 mm, if the extrusion speed of the wiper member 40 is 1 m / s, the length of the wiper member 40 may be about 500 mm.

この例によれば、ワイパー部材４０を鋼帯Ｈの走行方向Ｘにも移動させるので、鋼帯Ｈの走行方向Ｘの厚膜部Ｂとワイパー部材４０との相対速度が小さくなり、厚膜部Ｂがワイパー部材４０の側面に滞在する時間を長くできる。この結果、その分ワイパー部材４０の長手方向の寸法を短くすることができるので、塗装装置を小型化して、装置の省スペース化や設備コストの低減が図られる。   According to this example, since the wiper member 40 is also moved in the traveling direction X of the steel strip H, the relative speed between the thick film portion B and the wiper member 40 in the traveling direction X of the steel strip H becomes small, and the thick film portion The time during which B stays on the side surface of the wiper member 40 can be lengthened. As a result, the dimension of the wiper member 40 in the longitudinal direction can be shortened accordingly, so that the coating apparatus can be miniaturized to save space and reduce equipment costs.

以上の実施の形態では、ワイパー部材４０を鋼帯Ｈの走行方向Ｘに平行に配置し、そのまま鋼帯Ｈの幅方向Ｙに移動させていたが、ワイパー部材４０を斜めに傾けるようにしてもよい。   In the above embodiment, the wiper member 40 is arranged in parallel with the traveling direction X of the steel strip H and is moved in the width direction Y of the steel strip H as it is, but the wiper member 40 may be inclined obliquely. Good.

かかる場合、例えば図１４に示すようにワイパー部材４０の上流側と下流側にそれぞれ伸縮自在な傾動機構としてのシリンダ機構７０、７１が接続される。そして、例えば鋼帯Ｈの表面の厚膜部Ｂが塗料均し装置１２に近づいたときに、図１５に示すようにワイパー部材４０の下流側が上流側によりも前方に突出し、ワイパー部材４０が鋼帯Ｈの走行方向Ｘに対し斜めの状態になる。その後ワイパー部材４０が斜めの状態で、鋼帯Ｈの幅方向Ｙに平行移動し、塗料均し装置１２に進入してきた厚膜部Ｂに接触する。つまり、この接触時にはワイパー部材４０の下流側の端部から鋼帯Ｈの反対側の側端部までの距離Ｅが近くなっている。その後、ワイパー部材４０は、図１６に示すように斜めの状態を維持して、厚膜部Ｂを掻き取りながら、引き続き鋼帯Ｈの幅方向Ｙに移動する。図１７に示すようにワイパー部材４０の下流側の端部が鋼帯Ｈの側端部に到達した後、ワイパー部材４０の上流側が下流側よりも速い速度で押され、ワイパー部材４０の傾きが戻される。こうしてワイパー部材４０が鋼帯Ｈの走行方向Ｘに平行に戻されるとともに、厚膜部Ｂは鋼帯Ｈの側方に押し出される。   In this case, for example, as shown in FIG. 14, cylinder mechanisms 70 and 71 are connected to the upstream side and the downstream side of the wiper member 40 as retractable tilt mechanisms. For example, when the thick film portion B on the surface of the steel strip H approaches the paint leveling device 12, the downstream side of the wiper member 40 protrudes forward from the upstream side as shown in FIG. It is in an oblique state with respect to the traveling direction X of the belt H. Thereafter, the wiper member 40 is translated in the width direction Y of the steel strip H in an oblique state, and comes into contact with the thick film portion B that has entered the paint leveling device 12. That is, the distance E from the downstream end portion of the wiper member 40 to the opposite side end portion of the steel strip H is close during this contact. Thereafter, the wiper member 40 continues to move in the width direction Y of the steel strip H while scraping off the thick film portion B while maintaining an oblique state as shown in FIG. As shown in FIG. 17, after the downstream end of the wiper member 40 reaches the side end of the steel strip H, the upstream side of the wiper member 40 is pushed at a faster speed than the downstream side, and the inclination of the wiper member 40 is inclined. Returned. Thus, the wiper member 40 is returned in parallel with the traveling direction X of the steel strip H, and the thick film portion B is pushed out to the side of the steel strip H.

この例によれば、厚膜部Ｂがワイパー部材４０に接触した時点で、ワイパー部材４０が斜めになっており、ワイパー部材４０の下流側の端部が鋼帯Ｈの側端部に近づいている。このため、厚膜部Ｂの接触後、短時間でワイパー部材４０の下流側の端部が鋼帯Ｈの側端部に到達できる。したがって、接触した厚膜部Ｂがワイパー部材４０の下流側の端部から漏れることなく、厚膜部Ｂを鋼帯Ｈの側方に適正に押し出すことができる。特に、厚膜部Ｂの掻き取りの際にワイパー部材４０を傾けると、厚膜部Ｂがワイパー部材４０に接触してからワイパー部材４０の下流側の端部に達するまでの滞在時間が短くなるが、この場合であっても、膜厚部Ｂを適正に鋼帯Ｈの側方に押し出すことができる。この結果、厚膜部Ｂが鋼帯Ｈの表面上から側方に押し出されるまでの時間を短縮できるので、厚膜部Ｂが鋼帯Ｈの表面上で乾燥し始めることがなく、例えば鋼帯Ｈの表面上に厚膜痕が残ることを防止できる。なお、この例において、上記実験結果を参考にすると、ワイパー部材４０が厚膜部Ｂに達したときに、ワイパー部材４０の下流部側の端部が鋼帯Ｈの側端部に到達していることが好ましく、ワイパー部材４０の長さは、この位置関係により設定してもよい。   According to this example, when the thick film portion B comes into contact with the wiper member 40, the wiper member 40 is inclined, and the downstream end of the wiper member 40 approaches the side end of the steel strip H. Yes. For this reason, after the contact of the thick film portion B, the end portion on the downstream side of the wiper member 40 can reach the side end portion of the steel strip H in a short time. Therefore, the thick film part B can be appropriately pushed out to the side of the steel strip H without leaking from the downstream end part of the wiper member 40. In particular, if the wiper member 40 is tilted when the thick film portion B is scraped off, the staying time from when the thick film portion B contacts the wiper member 40 until reaching the downstream end of the wiper member 40 is shortened. However, even in this case, the film thickness portion B can be appropriately pushed out to the side of the steel strip H. As a result, it is possible to shorten the time until the thick film portion B is pushed sideways from the surface of the steel strip H, so that the thick film portion B does not begin to dry on the surface of the steel strip H. Thick film marks can be prevented from remaining on the surface of H. In this example, referring to the experimental result, when the wiper member 40 reaches the thick film portion B, the end portion on the downstream side of the wiper member 40 reaches the side end portion of the steel strip H. Preferably, the length of the wiper member 40 may be set according to this positional relationship.

以上、添付図面を参照しながら本発明の好適な実施の形態について説明したが、本発明はかかる例に限定されない。当業者であれば、特許請求の範囲に記載された思想の範疇内において、各種の変更例または修正例に相到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。例えば上記実施の形態は、鋼帯Ｈに複数層からなる液膜の塗料を塗布する例であったが、本発明は、単層の塗料を塗布する場合にも適用できる。   The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be made within the scope of the ideas described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs. For example, although the said embodiment was an example which applies the coating material of the liquid film which consists of multiple layers to the steel strip H, this invention is applicable also when applying a single layer coating material.

本発明は、カーテン塗装においてより厚い厚膜部を均す際に有用である。   The present invention is useful in leveling thicker thick film portions in curtain coating.

カーテン塗装装置の側面から見た構成を示す模式図である。It is a schematic diagram which shows the structure seen from the side surface of the curtain coating apparatus. 塗料均し装置を平面から見た構成を示す模式図である。It is a schematic diagram which shows the structure which looked at the coating material leveling apparatus from the plane. 塗料均し装置を正面から見た構成を示す模式図である。It is a schematic diagram which shows the structure which looked at the coating material leveling apparatus from the front. ワイパー部材の斜視図である。It is a perspective view of a wiper member. ワイパー部材が鋼帯の幅方向に移動した状態を示す説明図である。It is explanatory drawing which shows the state which the wiper member moved to the width direction of the steel strip. ワイパー部材が厚膜部に接触した状態を示す説明図である。It is explanatory drawing which shows the state which the wiper member contacted the thick film part. ワイパー部材が厚膜部を掻き取る様子を示す説明図である。It is explanatory drawing which shows a mode that a wiper member scrapes off a thick film part. ワイパー部材が厚膜部を鋼帯の側方に押し出す様子を示す説明図である。It is explanatory drawing which shows a mode that a wiper member pushes a thick film part to the side of a steel strip. ワイパー部材と液溜まりの衝突角度を変えて、液溜まりの鋼帯からの落下時間を比較する実験の装置図である。It is an apparatus figure of experiment which changes the collision angle of a wiper member and a liquid reservoir, and compares the fall time from the steel strip of a liquid reservoir. ワイパー部材と液溜まりの衝突角度を変えて、液溜まりの鋼帯からの落下時間を比較した実験結果を示すグラフである。It is a graph which shows the experimental result which changed the collision angle of a wiper member and a liquid reservoir, and compared the fall time from the steel strip of a liquid reservoir. ワイパー部材を鋼帯の走行方向に移動させる場合の塗料均し装置の模式図である。It is a schematic diagram of the paint leveling device when moving the wiper member in the traveling direction of the steel strip. ワイパー部材が厚膜部に接触した状態を示す説明図である。It is explanatory drawing which shows the state which the wiper member contacted the thick film part. ワイパー部材が鋼帯の幅方向と走行方向に移動しながら厚膜部を掻き取る様子を示す説明図である。It is explanatory drawing which shows a mode that a wiper member scrapes off a thick film part, moving to the width direction and running direction of a steel strip. ワイパー部材を傾斜させる場合の塗料均し装置の模式図である。It is a schematic diagram of the paint leveling device when the wiper member is inclined. ワイパー部材が傾斜した状態で厚膜部に接触した様子を示す説明図である。It is explanatory drawing which shows a mode that the wiper member contacted the thick film part in the state inclined. ワイパー部材の下流側の端部が鋼帯の幅方向の側端部に到達した様子を示す説明図である。It is explanatory drawing which shows a mode that the edge part of the downstream of a wiper member reached | attained the side edge part of the width direction of a steel strip. ワイパー部材の傾斜が平行に戻される様子を示す説明図である。It is explanatory drawing which shows a mode that the inclination of a wiper member is returned in parallel. 従来のカーテン塗装装置を側面から見た模式図である。It is the schematic diagram which looked at the conventional curtain coating apparatus from the side. 従来のカーテン塗装装置を正面から見た模式図である。It is the schematic diagram which looked at the conventional curtain coating apparatus from the front.

符号の説明Explanation of symbols

１ カーテン塗装装置
１２ 塗料均し装置
４０ ワイパー部材
Ａ 塗料
Ｂ 厚膜部
Ｈ 鋼帯
Ｘ 鋼帯の走行方向
Ｙ 鋼帯の幅方向 DESCRIPTION OF SYMBOLS 1 Curtain coating device 12 Paint leveling device 40 Wiper member A Paint B Thick film part H Steel strip X Running direction of steel strip Y Width direction of steel strip

Claims (14)

塗料をカーテン状に落下させ、下方を走行する鋼帯の表面を塗装するカーテン塗装装置であって、
鋼帯の表面上を鋼帯の幅方向に移動し、鋼帯の表面上の塗料の厚膜部を鋼帯の側方に押し出して均すワイパー部材を有することを特徴とする、カーテン塗装装置。 A curtain coating device that drops paint in a curtain shape and paints the surface of a steel strip that travels below.
Curtain coating apparatus characterized by having a wiper member that moves on the surface of the steel strip in the width direction of the steel strip, and extrudes the thick film portion of the paint on the surface of the steel strip to the side of the steel strip to level it . 前記ワイパー部材を鋼帯の走行方向に移動させる駆動機構を有することを特徴とする、請求項１に記載のカーテン塗装装置。 The curtain coating apparatus according to claim 1, further comprising a drive mechanism that moves the wiper member in a traveling direction of the steel strip. 前記ワイパー部材は、平面から見て直線状に形成され、鋼帯の走行方向に平行に設けられていることを特徴とする、請求項１又は２に記載のカーテン塗装装置。 The curtain coating apparatus according to claim 1, wherein the wiper member is formed in a straight line when viewed from a plane and is provided in parallel with a traveling direction of the steel strip. 前記ワイパー部材を平面から見て鋼帯の走行方向に対して斜めに傾動させる傾動機構を有することを特徴とする、請求項３に記載のカーテン塗装装置。 The curtain coating apparatus according to claim 3, further comprising a tilting mechanism that tilts the wiper member obliquely with respect to a traveling direction of the steel strip when viewed from above. 前記ワイパー部材の下部は、下端に向かって細くなるテーパ状に形成されていることを特徴とする、請求項１〜４のいずれかに記載のカーテン塗装装置。 The lower part of the said wiper member is formed in the taper shape which becomes thin toward a lower end, The curtain coating apparatus in any one of Claims 1-4 characterized by the above-mentioned. 前記鋼帯の側方には、ワイパー部材によって押し出された塗料を回収する容器が設けられていることを特徴とする、請求項１〜５のいずれかに記載のカーテン塗装装置。 The curtain coating apparatus according to any one of claims 1 to 5, wherein a container for collecting the paint pushed out by the wiper member is provided on a side of the steel strip. 前記鋼帯には、複数層の液膜からなる塗料が塗布されることを特徴とする、請求項１〜６のいずれかに記載のカーテン塗装装置。 The curtain coating apparatus according to any one of claims 1 to 6, wherein the steel strip is coated with a coating composed of a plurality of liquid films. 塗料をカーテン状に落下させ、下方を走行する鋼帯の表面を塗装するカーテン塗装方法であって、
ワイパー部材を鋼帯の表面上の幅方向に移動させて、鋼帯の表面上の塗料の厚膜部を鋼帯の側方に押し出して均すことを特徴とする、カーテン塗装方法。 A curtain coating method in which the paint is dropped into a curtain shape and the surface of the steel strip traveling below is painted,
A curtain coating method characterized by moving a wiper member in a width direction on a surface of a steel strip, and extruding a thick film portion of a paint on the surface of the steel strip toward a side of the steel strip and leveling it. 前記ワイパー部材を鋼帯の走行方向にも移動させながら、前記塗料の厚膜部を均すことを特徴とする、請求項８に記載のカーテン塗装方法。 The curtain coating method according to claim 8, wherein the thick film portion of the paint is leveled while moving the wiper member also in the traveling direction of the steel strip. 鋼帯の走行速度と同じ速度で前記ワイパー部材を鋼帯の走行方向に移動させることを特徴とする、請求項９に記載のカーテン塗装方法。 The curtain coating method according to claim 9, wherein the wiper member is moved in the traveling direction of the steel strip at the same speed as the traveling speed of the steel strip. 前記ワイパー部材を平面から見て鋼帯の走行方向と平行にし、その状態で前記ワイパー部材を鋼帯の幅方向に移動させて前記厚膜部を均すことを特徴とする、請求項８〜１０のいずれかに記載のカーテン塗装方法。 The said wiper member is made parallel to the running direction of the steel strip when viewed from above, and the thick film portion is leveled by moving the wiper member in the width direction of the steel strip in this state. The curtain coating method according to any one of 10. 前記ワイパー部材を平面から見て上流側より下流側の部分が突出するように鋼帯の走行方向に対して傾斜させ、その状態で前記ワイパー部材を鋼帯の幅方向に移動させて前記厚膜部を均すことを特徴とする、請求項８〜１０のいずれかに記載のカーテン塗装方法。 The thick film is formed by inclining the wiper member with respect to the traveling direction of the steel strip so that a portion on the downstream side from the upstream side protrudes when viewed from a plane, and moving the wiper member in the width direction of the steel strip in this state. The curtain coating method according to any one of claims 8 to 10, wherein the portions are leveled. 前記ワイパー部材の下流側の端部が鋼帯の幅方向の端部に到達した後、前記ワイパー部材の上流側の部分を引き続き前記鋼帯の幅方向に移動させ、前記ワーパー部材を鋼帯の走行方向に平行にすることを特徴とする、請求項１２に記載のカーテン塗装方法。 After the downstream end of the wiper member reaches the end in the width direction of the steel strip, the upstream portion of the wiper member is continuously moved in the width direction of the steel strip, and the warper member is moved to the steel strip. The curtain coating method according to claim 12, wherein the curtain coating method is parallel to the traveling direction. 前記鋼帯には、複数層の液膜からなる塗料が塗布されることを特徴とする、請求項８〜１３のいずれかに記載のカーテン塗装方法。 The curtain coating method according to any one of claims 8 to 13, wherein the steel strip is coated with a coating composed of a plurality of liquid films.
JP2006333293A 2006-12-11 2006-12-11 Curtain coating apparatus and curtain coating method Expired - Fee Related JP4754467B2 (en)

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JP2008142634A (en) * 2006-12-11 2008-06-26 Nippon Steel Corp Curtain coating device
CN104069988A (en) * 2014-06-26 2014-10-01 林创举 Panel sprinkling curtain coating japanning equipment
JP2020089806A (en) * 2018-12-03 2020-06-11 コニカミノルタ株式会社 Adhesive applying device and inkjet image forming device

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JP2008142634A (en) * 2006-12-11 2008-06-26 Nippon Steel Corp Curtain coating device
JP4691007B2 (en) * 2006-12-11 2011-06-01 新日本製鐵株式会社 Curtain coating equipment
CN104069988A (en) * 2014-06-26 2014-10-01 林创举 Panel sprinkling curtain coating japanning equipment
JP2020089806A (en) * 2018-12-03 2020-06-11 コニカミノルタ株式会社 Adhesive applying device and inkjet image forming device
JP7259294B2 (en) 2018-12-03 2023-04-18 コニカミノルタ株式会社 Adhesive coating device and inkjet image forming device

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