JPH0338912B2 - - Google Patents
Info
- Publication number
- JPH0338912B2 JPH0338912B2 JP11562085A JP11562085A JPH0338912B2 JP H0338912 B2 JPH0338912 B2 JP H0338912B2 JP 11562085 A JP11562085 A JP 11562085A JP 11562085 A JP11562085 A JP 11562085A JP H0338912 B2 JPH0338912 B2 JP H0338912B2
- Authority
- JP
- Japan
- Prior art keywords
- strip
- catenary
- baking
- amount
- sides
- 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
Links
- 239000011248 coating agent Substances 0.000 claims description 41
- 238000000576 coating method Methods 0.000 claims description 41
- 238000007664 blowing Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Description
本発明は、ストリツプ塗布膜の連続乾燥焼付け
方法に係り、特に、金属ストリツプの表裏面にお
ける塗料の焼付け状態をオンラインで制御する際
に用いるのに好適な、塗布液が表裏両面に塗布さ
れたストリツプをカテナリー炉内で走行せしめつ
つ、該ストリツプの両面に熱風吹き出し部から熱
風をそれぞれ吹き付けて、塗布膜を連続的に乾
燥、焼付けるようにしたストリツプ塗布膜の連続
乾燥焼付け方法の改良に関するものである。
The present invention relates to a method for continuously drying and baking strip coating films, and in particular, to a strip coating coated with a coating liquid on both the front and back surfaces, which is suitable for online control of the baking state of paint on the front and back surfaces of a metal strip. This invention relates to an improvement in a continuous drying and baking method for a strip coating film, in which the coating film is continuously dried and baked by blowing hot air from a hot air blowing section onto both sides of the strip while running the strip in a catenary furnace. be.
従来より、鋼板、アルミ板などの金属ストリツ
プからその塗装製品を製造するに際しては、まず
該金属ストリツプを走行せしめつつ、その表面に
コーターロール等の適当な塗布手段によつて所定
の塗布液を塗布せしめた後、それを所定の加熱炉
内の乾燥帯に導き、引き続き走行せしめつつ、塗
布液の乾燥、焼付けを行う連続的方法が採用され
ている。
ところが、このような従来の方法においては、
乾燥焼付け炉の構成が、所定の塗布液を塗布した
金属ストリツプの表裏面を均一に加熱せしめるこ
とに主眼が置かれており、このため、ストリツプ
の表面と裏面での塗布量が異なつたり、異なる塗
布液を塗布する場合等には、表裏面の焼付け状態
をそれぞれ制御することができず、表裏面の焼付
け状態が異なつてしまうという問題点を有してい
た。
このような問題点を解消するべく、特開昭57−
42371で、焼付け炉内を、走行するストリツプを
間にして２つに仕切ることにより、炉内雰囲気循
環を表裏で区分し、表側と裏側への加熱量を変更
できるようにしたものが開示されている。
Conventionally, when manufacturing a coated product from a metal strip such as a steel plate or aluminum plate, the metal strip is first run and a predetermined coating liquid is applied to its surface using a suitable coating means such as a coater roll. A continuous method is adopted in which the coating liquid is dried and baked while being guided to a drying zone in a predetermined heating furnace and continued to run. However, in such conventional methods,
The main focus of the construction of the drying oven is to uniformly heat the front and back surfaces of the metal strip coated with a prescribed coating solution, which may result in different amounts of coating on the front and back sides of the strip. When different coating liquids are applied, it is not possible to control the baking conditions on the front and back surfaces, resulting in a problem in that the baking conditions on the front and back surfaces are different. In order to solve these problems, JP-A-57-
No. 42371 discloses a method in which the inside of the baking furnace is divided into two parts with a running strip in between, so that the atmosphere circulation inside the furnace is divided between the front and the back, and the amount of heating to the front and back sides can be changed. There is.
しかしながら、特開昭57−42371で開示されて
いる方法では、炉内雰囲気を金属ストリツプを境
にして区分する必要があり、設備費が高くなるだ
けでなく、ストリツプが炉内でローラによつて支
持されることなく、その中央部が重力の作用でカ
テナリー（懸垂線）状に垂下しているカテナリー
炉においては、走行位置が変動し易いストリツプ
を境に炉内を精度良く区分することが困難である
という問題点を有していた。
However, in the method disclosed in JP-A-57-42371, it is necessary to separate the atmosphere inside the furnace using metal strips as boundaries, which not only increases equipment costs, but also causes the strips to be separated by rollers inside the furnace. In catenary furnaces, which are not supported and whose center part hangs down like a catenary due to the action of gravity, it is difficult to precisely divide the inside of the furnace using strips whose running positions are likely to fluctuate. It had the problem that.
本発明は、前記従来の問題点を解消するべくな
されたもので、安価な設備費で、カテナリー炉に
おいても、ストリツプの表面と裏面における塗布
膜の焼付け状態をそれぞれ容易に制御することが
できるストリツプ塗布膜の連続乾燥焼付け方法を
提供することを目的とする。
The present invention has been made in order to solve the above-mentioned conventional problems, and it is possible to easily control the baked state of the coating film on the front and back sides of the strip, even in a catenary furnace, with low equipment costs. The object of the present invention is to provide a method for continuously drying and baking a coating film.
本発明は、塗布液が表裏両面に塗布されたスト
リツプをカテナリー炉内で走行せしめつつ、該ス
トリツプの両面に熱風吹き出し部から熱風をそれ
ぞれ吹き付けて、塗布膜を連続的に乾燥、焼付け
るようにしたストリツプ塗布膜の連続乾燥焼付け
方法において、カテナリー量を調節することによ
り、ストリツプの表裏各面と熱風吹き出し部の距
離を相対的に変化させて、ストリツプの表面と裏
面における塗布膜の焼付け状態をそれぞれ制御す
ることにより、前記目的を達成したものである。
又、本発明の実施態様は、前記カテナリー量の
調節を、カテナリー炉入側及び出側のブライドル
モータの速度を制御することにより行うようにし
たものである。
In the present invention, a strip coated with a coating liquid on both sides is run in a catenary furnace, and hot air is blown onto both sides of the strip from a hot air blowing section to continuously dry and bake the coating film. In the continuous drying baking method for the strip coating film, by adjusting the amount of catenary, the distance between the front and back surfaces of the strip and the hot air blowing part can be changed relative to each other, thereby controlling the baking condition of the coating film on the front and back surfaces of the strip. By controlling each of them, the above objective is achieved. Further, in an embodiment of the present invention, the amount of catenary is adjusted by controlling the speeds of bridle motors on the catenary entrance and exit sides.
本発明においては、塗布液が表裏両面に塗布さ
れたストリツプをカテナリー炉内で走行せしめつ
つ、該ストリツプの両面に熱風吹き出し部から熱
風をそれぞれ吹き付けて、塗布膜を連続的に乾
燥、焼付ける際に、ストリツプの搬送基準面から
の垂下量であるカテナリー量（第２図参照）を調
節することにより、ストリツプの表裏各面と熱風
吹き出し部の距離を相対的に変化させるようにし
ている。従つて、ストリツプへの吹き付け風速が
変化し、その結果として加熱量がストリツプの表
側と裏側で逆方向に変化するので、ストリツプの
表面と裏面における塗布膜の焼付け状態を、それ
ぞれ容易に制御することができる。
又、前記カテナリー量の調節を、カテナリー炉
入側及び出側のブライドルモータの速度を制御す
ることにより行うようにして、カテナリー量が容
易に調節できるようにしたものである。
In the present invention, a strip coated with a coating liquid on both sides is run in a catenary furnace, and hot air is blown onto both sides of the strip from a hot air blowing section to continuously dry and bake the coating film. In addition, by adjusting the catenary amount (see FIG. 2), which is the amount of drooping of the strip from the conveyance reference plane, the distances between the front and back surfaces of the strip and the hot air blowing part are changed relative to each other. Therefore, the speed of air blowing onto the strip changes, and as a result, the amount of heating changes in opposite directions on the front and back sides of the strip, making it easy to control the baking state of the coating film on the front and back sides of the strip, respectively. Can be done. Further, the amount of catenary can be easily adjusted by controlling the speeds of bridle motors on the inlet and outlet sides of the catenary furnace.
以下図面を参照して、本発明に係るストリツプ
塗布膜の連続乾燥焼付け方法が採用された、電磁
鋼板のCr含有半有機系コーテング設備の実施例
を詳細に説明する。
本実施例は、第１図に示す如く、走行するスト
リツプ１０の表面及び裏面に、ロールコータ等の
塗布装置１２を用いてコーテング液を塗布した
後、カテナリー式の乾燥焼付炉１４により、スト
リツプ１０の両面にその熱風吹出し部１６Ａ，１
６Ｂから熱風を吹き付けて、コーテング膜を連続
的に乾燥、焼付けるようにした電磁鋼板のコーテ
ング設備に本発明を適用したものである。
前記乾燥焼付炉１４の出側には、ストリツプ１
０の表面及び裏面のコーテング焼付け状態を検出
する焼付状態検出器１８Ａ，１８Ｂがそれぞれ設
けられている。この焼付状態検出器１８Ａ，１８
Ｂとしては、例えば、出願人が既に特願昭60−
93419で提案した、少なくとも２つ以上の波長又
は波長域におけるストリツプ表面の反射率を測定
し、該２つ以上の反射率からコーテング膜の焼付
け状態を検出するようにしたものを用いることが
できる。
又、前記乾燥焼付炉１４の内側底部には、スト
リツプ１０のカテナリー量を検出するためのカテ
ナリー量検出器２０が設けられている。このカテ
ナリー量検出器２０としては、例えば炉の底部か
らストリツプ１０の裏側面までの距離を検出する
距離計を用いることができる。
前記焼付状態検出器１８Ａ，１８Ｂの出力に応
じて、カテナリー量を制御するための制御装置２
２は、前記焼付状態検出器１８Ａ，１８Ｂの出力
から、表裏面の焼付状態の差を演算する差分演算
器２２Ａと、該差分演算器２２Ａの出力及び前記
カテナリー量検出器２０で検出される実際のカテ
ナリー量に応じて、カテナリー量の設定値を変更
するためのカテナリー量設定器２２Ｂと、該カテ
ナリー量設定器２２Ｂの出力に応じて、乾燥焼付
炉１４の入側ブライドルモータ２４及び出側ブラ
イドルモータ２６の速度を調節することによりカ
テナリー量を制御する速度設定器２２Ｃ，２２Ｄ
とから構成されている。
以下実施例の作用を説明する。
塗布装置１２でCr含有半有機系コーテイング
液が表裏両面に塗布されたストリツプ１０は、カ
テナリー式の乾燥焼付炉１４内を走行しつつ、熱
風吹出し部１６Ａ，１６Ｂからストリツプ１０の
両面に吹き付けられる熱風によつて、コーテイン
グ膜が連続的に乾燥、焼付けされる。焼付けられ
たコーテイング膜の状態は、焼付状態検出器１８
Ａ，１８Ｂで検出され、その表面と裏面の差が差
分演算器２２Ａで演算される。該差分演算器２２
Ａの出力がある場合、即ち、裏面と表面で焼付け
状態に差がある場合には、カテナリー量設定器２
２Ｂで設定カテナリー量を変更し、速度設定器２
２Ｃ，２２Ｄで炉入側及び出側のブライドルモー
タ２４，２６を制御して、カテナリー量を変更す
る。例えば、裏面が表面より焼付け不足の場合に
は、入側ブライドルモータ２４を増速又は出側ブ
ライドルモータ２６を減速して、カテナリー量検
出器２０で検出されるカテナリー量を大きくし、
ストリツプ１０と表側熱風吹出し部１６Ａとの距
離を大きくすると同時に、裏側熱風吹出し部１６
Ｂとの距離を小さくする。その結果、ストリツプ
１０への吹き付け風速が変化し、ストリツプ表側
への加熱量は小さく、裏側への加熱量は大きくな
るので、表裏の焼付け状態は均一にされる。
本実施例においては、カテナリー量の調節を、
炉入側及び出側のブライドルモータ２４，２６の
速度を制御することにより行うようにしているの
で、カテナリー量を容易に調節することができ
る。なお、カテナリー量を調節する方法はこれに
限定されず、例えば、乾燥焼付炉１４内に設けら
れたロールの位置を上下に変更する方法も可能で
ある。
前記実施例においては、ストリツプ１０の表面
と裏面のコーテイング膜の焼付け状態を均一に制
御するようにしていたが、本発明の適用対象はこ
れに限定されず、例えばストリツプ表面と裏面で
コーテイング膜の焼付け状態に差をつけたい場合
にも同様に適用できることは明らかである。
又、前記実施例においては、本発明が、電磁鋼
板のCr含有半有機系コーテイング膜の焼付け状
態の制御に適用されていたが、本発明の適用対象
はこれに限定されない。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a Cr-containing semi-organic coating equipment for electrical steel sheets will be described in detail below with reference to the drawings, in which the continuous drying and baking method for strip coating films according to the present invention is adopted. In this embodiment, as shown in FIG. 1, a coating liquid is applied to the front and back surfaces of a traveling strip 10 using a coating device 12 such as a roll coater, and then the strip 10 is coated in a catenary type drying and baking furnace 14. The hot air blowing portion 16A, 1 is provided on both sides of the
The present invention is applied to coating equipment for electromagnetic steel sheets that continuously dries and bakes the coating film by blowing hot air from 6B. On the exit side of the drying and baking oven 14, a strip 1 is provided.
Burn-in state detectors 18A and 18B are provided for detecting the coating burn-on state of the front and back surfaces of the printer 0, respectively. This seizure state detector 18A, 18
As for B, for example, the applicant has already filed a patent application in 1980-
93419, which measures the reflectance of the strip surface at at least two or more wavelengths or wavelength ranges and detects the baked state of the coating film from the two or more reflectances can be used. A catenary amount detector 20 for detecting the amount of catenary in the strip 10 is provided at the inner bottom of the drying and baking oven 14. As this catenary amount detector 20, for example, a distance meter that detects the distance from the bottom of the furnace to the back side of the strip 10 can be used. A control device 2 for controlling the amount of catenary according to the outputs of the seizing state detectors 18A and 18B.
2 is a difference calculator 22A that calculates the difference between the burn-in states on the front and back surfaces from the outputs of the burn-in state detectors 18A and 18B, and the actual difference detected by the output of the difference calculator 22A and the catenary amount detector 20. A catenary amount setting device 22B for changing the set value of the catenary amount according to the catenary amount of Speed setters 22C and 22D that control the catenary amount by adjusting the speed of the motor 26
It is composed of. The operation of the embodiment will be explained below. The strip 10, which has been coated with a Cr-containing semi-organic coating liquid on both the front and back surfaces, is moved through a catenary-type drying and baking furnace 14, while hot air is blown onto both sides of the strip 10 from hot air blowing units 16A and 16B. The coating film is continuously dried and baked. The state of the baked coating film is detected by a baked state detector 18.
A and 18B are detected, and the difference between the front and back surfaces is calculated by a difference calculator 22A. The difference calculator 22
If there is an output of A, that is, if there is a difference in the printing state between the back side and the front side, the catenary amount setting device 2
Change the set catenary amount with 2B, and press speed setting device 2.
2C and 22D control the bridle motors 24 and 26 on the furnace entry and exit sides to change the catenary amount. For example, if the back side is less baked than the front side, the inlet bridle motor 24 is sped up or the outlet bridle motor 26 is decelerated to increase the amount of catenary detected by the catenary amount detector 20,
While increasing the distance between the strip 10 and the front hot air blowing section 16A,
Reduce the distance to B. As a result, the speed of air blowing onto the strip 10 changes, and the amount of heat applied to the front side of the strip is small and the amount of heat applied to the back side is increased, so that the baking condition on the front and back sides is made uniform. In this example, the adjustment of the catenary amount is
Since this is done by controlling the speeds of the bridle motors 24 and 26 on the furnace entry and exit sides, the amount of catenary can be easily adjusted. Note that the method of adjusting the catenary amount is not limited to this, and for example, a method of vertically changing the position of the roll provided in the drying and baking furnace 14 is also possible. In the above embodiment, the baking state of the coating film on the front and back surfaces of the strip 10 was controlled uniformly, but the application of the present invention is not limited to this. It is clear that the present invention can be similarly applied to cases where it is desired to differentiate the printing state. Furthermore, in the embodiments described above, the present invention was applied to control the baking state of a Cr-containing semi-organic coating film of an electrical steel sheet, but the present invention is not limited to this.
以上説明した通り、本発明によれば、表裏別系
統の加熱装置を設置することなく、安い設備費
で、ストリツプ表裏の焼付け状態を制御すること
ができる。従つて、ストリツプ表裏の焼付け状態
を均一に制御することも容易にできるという優れ
た効果を有する。
As explained above, according to the present invention, it is possible to control the baking state of the front and back sides of the strip at low equipment costs without installing separate heating systems for the front and back sides. Therefore, it has the excellent effect of easily controlling the baking condition on the front and back sides of the strip to be uniform.
第１図は、本発明に係るストリツプ塗布膜の連
続乾燥焼付け方法が採用された、電磁鋼板のCr
含有半有機系コーテイング設備の実施例の構成を
示す、一部ブロツク線図を含む断面図、第２図
は、カテナリー量の定義を説明するための線図で
ある。
１０……ストリツプ、１２……塗布装置、１４
……乾燥焼付炉、１６Ａ，１６Ｂ……熱風吹出し
部、１８Ａ，１８Ｂ……焼付状態検出器、２０…
…カテナリー量検出器、２２……制御装置、２
４，２６……ブライドルモータ。
Figure 1 shows the Cr
FIG. 2, which is a sectional view partially including a block diagram, showing the configuration of an embodiment of the containing semi-organic coating equipment is a diagram for explaining the definition of the catenary amount. 10... Strip, 12... Coating device, 14
...Drying baking oven, 16A, 16B... Hot air blowing section, 18A, 18B... Baking state detector, 20...
... Catenary amount detector, 22 ... Control device, 2
4,26...Bridle motor.
Claims (1)
カテナリー炉内で走行せしめつつ、該ストリツプ
の両面に熱風吹き出し部から熱風をそれぞれ吹き
付けて、塗布膜を連続的に乾燥、焼付けるように
したストリツプ塗布膜の連続乾燥焼付け方法にお
いて、 カテナリー量を調節することにより、ストリツ
プの表裏各面と熱風吹き出し部の距離を相対的に
変化させて、ストリツプの表面と裏面における塗
布膜の焼付け状態をそれぞれ制御することを特徴
とするストリツプ塗布膜の連続乾燥焼付け方法。 ２ 前記カテナリー量の調節を、カテナリー炉入
側及び出側のブライドルモータの速度を制御する
ことにより行うようにした特許請求の範囲第１項
記載のストリツプ塗布膜の連続乾燥焼付け方法。[Claims] 1. A strip coated with a coating liquid on both sides is run in a catenary furnace, and hot air is blown onto both sides of the strip from a hot air blowing section to continuously dry and bake the coating film. In a continuous dry baking method for strip coating films, the amount of catenary is adjusted to change the distance between the front and back surfaces of the strip and the hot air blowing part, thereby increasing the coating film on the front and back surfaces of the strip. A method for continuous drying and baking of strip coating films characterized by controlling each baking state. 2. The method of continuous drying and baking of a strip coating film according to claim 1, wherein the amount of catenary is adjusted by controlling the speed of bridle motors on the entrance and exit sides of the catenary furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11562085A JPS61274769A (en) | 1985-05-29 | 1985-05-29 | Method for continuously drying and baking coating film of strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11562085A JPS61274769A (en) | 1985-05-29 | 1985-05-29 | Method for continuously drying and baking coating film of strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61274769A JPS61274769A (en) | 1986-12-04 |
| JPH0338912B2 true JPH0338912B2 (en) | 1991-06-12 |
Family
ID=14667161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11562085A Granted JPS61274769A (en) | 1985-05-29 | 1985-05-29 | Method for continuously drying and baking coating film of strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61274769A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2502229B2 (en) * | 1991-11-27 | 1996-05-29 | 川崎製鉄株式会社 | Organic composite coated steel sheet with excellent front and back distinctiveness |
-
1985
- 1985-05-29 JP JP11562085A patent/JPS61274769A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61274769A (en) | 1986-12-04 |
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