KR101694219B1 - Method and equipment for coating a metal plate - Google Patents

Abstract

The present invention relates to a method for coating a metal plate, and a facility therefor, intended to increase productivity by increasing metal plate transfer speeds in a process for forming a strong coating layer on the metal plate. To this end, the method for coating a metal plate comprises the following steps: a first rolling process of rolling the transferred metal plate; a second rolling process of rolling the metal plate which had undergone the first rolling process so as to make the surface thereof rough; a coating process of forming a coating layer by applying a coating material on the metal plate from the second rolling process; a curing process of curing the metal plate from the coating process; a cooling and washing process of cooling and washing the metal plate from the curing process; and a third rolling process of rolling the metal plate from the cooling and washing process so as to make the surface thereof rough.

Description

[0001] METHOD AND APPARATUS FOR COATING METAL PLATES [0002]

The present invention relates to a method and an apparatus for coating a metal plate, and more particularly, to a method and apparatus for coating a metal plate capable of imparting roughness to a coating layer after coating the surface of the metal plate.

A metal plate having a rubber coating layer on its surface is applied as a part for improving noise and braking force in a friction generating part such as a shim plate installed on a brake pad for a vehicle.

This shim plate is a main component that must be installed in a disc brake system in order to reduce frictional heat generated by friction and vibration noise generated at the time of braking by a disc and a brake pad, A rubber coating layer is formed on the surface of a metal plate made of a cold roll steel or a stainless steel material and this rubber coating layer can effectively reduce frictional heat and vibration noise generated by friction Is selected.

A method of forming a coating layer on a metal plate, such as the method of manufacturing a shim plate, includes a coating process in which a metal plate is immersed in a rubber resin or a rubber plate is coated on the surface of a metal plate, and a curing process Followed by a rolling step in which the surface of the coated metal plate is rolled to give a roughness.

The conventional method of coating a metal plate has the following problems.

There is a problem that the coating layer is not uniformly distributed on the surface of the metal plate and the adhesion between the metal plate and the rubber coating layer is not stable because the rubber coating layer is formed on the surface of the smooth metal plate. This problem has increased the problem of slowing the transfer speed of the metal plate in the coating process of immersing or applying the rubber resin to the metal plate.

In order to continuously carry out the process without cutting the rolled metal plate, the metal plate is rolled in a state of being wound in the form of a coil. In the curing process after the coating process of the metal plate and the rolling process, A process condition is required in which the transfer of the transfer material is stopped or continued without continuing. In the conventional metal plate coating method, in order to cure the rubber coating layer in the hardening step, the feeding speed of the metal plate is determined according to the time when infrared rays are irradiated to a certain area of the metal plate. In other words, as the length of the infrared ray irradiation apparatus is reduced, the transfer speed of the metal plate is inevitably slowed. In contrast, in order to increase the transfer speed of the metal plate in order to increase the production amount, it is necessary to increase the length of the infrared ray irradiation apparatus. There has been a problem that the length of the irradiation device can not be extended.

Therefore, it is necessary to develop a technique capable of forming a strong coating layer on a metal plate and increasing the conveying speed of the metal plate while reducing the longitudinal size of the apparatus for curing the coating layer.

Korean Patent Registration No. 10-1437401 (Publication date 2014.09.05) Korean Registered Patent No. 10-1321522 (Publication date: October 31, 2013) Japanese Patent Application Laid-Open No. 11-148521 (published date June 6, 1999)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems and it is an object of the present invention to provide a coating method and apparatus capable of imparting roughness to the surface of a metal plate in order to form a strong coating layer on a metal plate, The purpose is to provide.

" 형상의 트랙형태로 구현하고 트랙의 내부를 외곽측 및 내곽측으로 구획함으로써 금속플레이트의 이송을 트랙의 외곽측을 따라 내곽측으로 이송시킬 수 있게 되며 이러한 트랙형 이송방식에 맞춤형 경화구조가 마련된 금속플레이트의 코팅 방법 및 설비를 제공하는 데 목적이 있다.In addition, in order to increase the feed rate of the metal plate while minimizing the specific gravity occupied by the longitudinal direction in the apparatus for curing the coating layer of the metal plate, the shape of the curing apparatus is referred to as "

Shaped track, and the inside of the track is divided into the outer side and the inner side so that the transfer of the metal plate can be transferred to the inner side along the outer side of the track, and the metal plate And to provide a coating method and a facility of the coating method.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And will be included in a wide range.

" 형상으로 이루어지며 내부가 외곽측과 내곽측으로 구획되되 외곽측에서 내곽측을 따라 상기 코팅공정을 거친 금속플레이트를 이송시키는 트랙케이싱에서 순차적으로 이루어지는 것으로, 상기 트랙케이싱으로 이송되는 금속플레이트에 원적외선을 조사하여 경화시키는 제1 원적외선 조사공정, 상기 제1 원적외선 경화공정을 거친 금속플레이트를 일정 온도로 경화시키는 제1 열경화공정, 상기 제1 열경화공정을 거친 금속플레이트에 원적외선을 조사하여 경화시키는 제2 원적외선 조사공정, 상기 제2 원적외선 조사공정을 거친 금속플레이트를 일정 온도로 경화시키는 제2 열경화공정, 상기 제2 열경화공정을 거친 금속플레이트에 원적외선을 조사하여 경화시키는 제3 원적외선 조사공정, 상기 제3 원적외선 조사공정을 거친 금속플레이트를 일정 온도로 경화시키는 제3 열경화공정, 상기 제3 열경화공정을 거친 금속플레이트에 근적외선을 조사하여 경화시키는 제1 근적외선 조사공정, 상기 제1 근적외선 조사공정을 거친 금속플레이트를 일정 온도로 경화시키는 제4 열경화공정, 상기 제4 열경화공정을 거친 금속플레이트에 근적외선을 조사하여 경화시키는 제2 근적외선 조사공정, 상기 제2 근적외선 조사공정을 거친 금속플레이트를 일정온도로 경화시키는 제5 열경화공정 및, 상기 제5 열경화공정을 거친 금속플레이트에 근적외선을 조사하는 경화시키는 제3 근적외선 조사공정 을 포함하여 이루어지는 것을 특징으로 한다.According to an aspect of the present invention, there is provided a method of coating a metal plate, comprising: a first rolling step of rolling a metal plate to be transferred; A second rolling step of rolling the metal plate after the first rolling step to impart roughness to the surface; A coating step of coating a metal plate subjected to the second rolling process to form a coating layer; A curing step of curing the metal plate after the coating process; A cooling and cleaning process for cooling and cleaning the metal plate after the curing process; And a third rolling step of rolling the metal plate subjected to the cooling and cleaning processes to impart roughness to the coated surface,

And a track casing in which the inside is divided into an outer side and an inner side, and a metal plate is transported along the inner side from the outer side to the above-mentioned coating process. In this case, far infrared rays A first far infrared ray irradiating step for irradiating the metal plate with the far infrared rays, a first heat curing step for curing the metal plate after the first far infrared ray curing step to a predetermined temperature, A second far infrared ray irradiation step of irradiating a metal plate which has undergone the second thermal curing step by irradiating a far infrared ray to cure the metal plate after curing the second far infrared ray irradiation step, The metal plate that has been subjected to the third far infrared ray irradiation process is heated at a constant temperature A first near-infrared ray irradiation step of curing the metal plate after the third thermal curing step by irradiating near-infrared rays, a fourth near-infrared ray irradiation step of curing the metal plate after the first near- A second near infrared ray irradiating step of irradiating the metal plate after the fourth thermal curing step by irradiating near infrared rays to harden the metal plate, a fifth thermal curing step of hardening the metal plate after the second near infrared ray irradiating step, And a third near infrared ray irradiation step of hardening the metal plate after the fifth thermal curing step by irradiating near infrared rays.

delete

According to a preferred embodiment of the present invention, in the cooling and washing step, nitrogen of low temperature is injected onto the metal plate subjected to the third near infrared ray irradiation process to prevent cooling and oxidation, and foreign substances are blown onto the surface of the metal plate Thereby performing a suction process.

" 형상의 트랙 형태로 이루어지는 것으로 내부가 외곽측 및 내곽측으로 구획되되 상기 코팅장치로부터 이송되는 금속플레이트를 외곽측을 따라 내곽측으로 이송시키는 트랙케이싱 및, 상기 트랙케이싱의 내부에 설치되어 이송되는 금속플레이트를 경화시키는 경화유닛을 포함하는 경화장치; 상기 경화장치를 거친 금속플레이트가 이송되는 냉각케이싱, 상기 냉각케이싱의 내부에 금속플레이트의 이송방향을 따라 다수개로 설치되어 금속플레이트에 미온의 질소를 분사하는 질소공급관로 및, 상기 질소공급관로 각각의 양측에 설치되어 금속플레이트에 포함된 분진을 흡입하는 분진흡입관로를 포함하는 냉각세척장치; 및, 상호 대향되게 구비되며 표면처리된 제3 워크롤 및 상기 제3 워크롤을 지지하는 복수개의 지지롤을 포함하여 이루어져 이송되는 금속플레이트를 압연함에 따라 코팅된 금속플레이트의 표면에 거칠기를 부여하게 되는 제2 압연장치;를 포함하여 이루어지는 것을 특징으로 한다.Next, a metal plate coating apparatus according to the present invention comprises a first work roll provided opposite to each other and a plurality of support rolls supporting the first work roll, rolling the transferred metal plate into a first work roll, A first rolling apparatus in which the processed second work roll is replaced with each of the first work rolls to impart roughness to the surface of the metal plate as it is rolled; A coating apparatus which comprises a storage tank in which a rubber resin is stored to deposit a metal plate transferred from the first rolling apparatus in a storage tank to apply a rubber resin to a metal plate; Side "

A track casing which is divided into an outer side and an inner side and which transports the metal plate conveyed from the coating device to the inner side along the outer side; A cooling casing in which a metal plate passed through the curing apparatus is conveyed, a plurality of cooling cassettes provided in the cooling casing along a conveying direction of the metal plates, And a dust suction pipe installed at both sides of the nitrogen supply pipe and sucking dust contained in the metal plate, and a third work roll having a surface-treated third work roll, And a plurality of support rolls for supporting the third work roll, And a second rolling apparatus that applies roughness to the surface of the coated metal plate as the metal plate is rolled.

According to a preferred embodiment of the present invention, the track casing is connected to the first outer section through which the metal plate transferred from the coating apparatus enters, and the transfer direction of the metal plate is changed by 90 degrees along the clockwise direction A second direction changing section that is connected to the second outer section and changes the transporting direction of the metal plate by 90 degrees in the clockwise direction, a second direction changing section that is connected to the first outer changing section and the second outer section, A third direction changing section that is connected to the third outer section and changes the feeding direction of the metal plate by 90 degrees along the clockwise direction after the feeding direction is changed by 90 degrees along the clockwise direction, The first inner section, the first inner section, and the conveying direction of the metal plate are changed by 90 degrees in the counterclockwise direction A fifth direction changing section which is connected to the second inner section and which is connected to the fourth direction changing section, the fourth inner changing section and the fourth inner changing section, the conveying direction of the metal plate is changed by 90 degrees in the counterclockwise direction, And a third inner section connected to the fifth direction changing section and allowing the metal plate to advance.

According to a preferred embodiment of the present invention, the curing unit is installed in each of the first outer section, the second outer section and the third outer section, and includes a reflective plate installed along the inner wall, A far infrared ray hardening unit provided on each of the pair of opposed reflective plates along a conveying direction of the metal plate for irradiating the far infrared rays, and a far infrared ray hardening unit provided on each of the first inner zone, the second inner zone and the third inner zone A near infrared ray hardening unit including a reflective plate provided along the inner wall and a near infrared ray heater disposed along the transport direction of the metal plate on each of the pair of opposite reflective plates of the reflective plate for irradiating near infrared rays, The first direction change section, the second direction change section, the third direction change section, the fourth direction change section, and the fifth A first insulating plate provided on each of the front and rear sides of the metal plate in the direction of transport of the metal plate and defining openings for transporting the metal plate, And a heat-hardening portion including a ventilation hole formed to communicate with the outside of the track casing, a plurality of heat-generating heaters provided on both sides of the ventilation hole, and a ventilation fan installed in the ventilation hole, .

According to a preferred embodiment of the present invention, the suction port of the dust suction pipe is installed so as to be spaced apart from the metal plate which is transported relative to the jet port of the nitrogen supply pipe.

As described above, according to the present invention, the following effects can be expected.

It is possible to form a strong coating layer on the metal plate and to increase the metal plate conveying speed in the coating process so as to not only extend the durability of the coating layer but also to cope with the conveying speed of the metal plate required in the post- There is an advantage to be able to.

There is an advantage that the production rate of the coated metal plate can be increased even in a factory with a narrow length by increasing the conveyance speed of the metal plate while minimizing the specific gravity of the longitudinal direction in the apparatus for curing the coating layer.

In addition, other effects of the present invention can be achieved not only by the embodiments described above and the claims of the present invention, but also by the effects that may occur within a range that can be easily recalled from them, And that they will be included in a broader range.

1 is a flowchart showing a method of coating a metal plate according to the present invention.
FIG. 2 is a view showing, from the side, the constitutions of the coating equipment of the metal plate according to the present invention in sequence.
3 is a view showing the first rolling apparatus 10 shown in Fig.
Fig. 4 is a side view of a locus in which a metal plate is transported in a track form in the curing process according to the present invention.
FIG. 5 is a side view of a hardening section according to the conveyance direction of the metal plate on the basis of FIG.
6 is a view showing the curing device 30 shown in Fig.
7 is a cross-sectional view taken along the line AA 'shown in FIG.
8 is a cross-sectional view taken along the line BB 'shown in FIG.
Fig. 9 is a view showing the cooling cleaning device 40 shown in Fig. 2. Fig.
10 is a view showing the second rolling apparatus 50 shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. It is to be understood that the terminology used herein is for the purpose of describing the embodiments and is not intended to limit the scope of the present invention. It is to be understood that the singular forms of these terms include plural forms unless the context clearly dictates otherwise, Are intended to aid in the understanding of the description and are subject to change at any time.

The present invention relates to a metal plate for forming a strong coating layer on the surface of a metal plate and imparting roughness to the surface of the coating layer, And to provide a coating method and apparatus for the coating.

To this end, as shown in FIGS. 1 and 2, the metal plate coating method according to the present invention includes a first rolling step, a second rolling step, a coating step, a hardening step, a cooling and washing step, and a third rolling step .

The metal plate coating apparatus according to the present invention for carrying out the above-mentioned processes comprises a first rolling apparatus 10, a coating apparatus 20, a hardening apparatus 30, a cooling cleaning apparatus 40 and a second rolling apparatus 50 The rollers for conveying the metal plate are located on both sides in the width direction of the metal plate, so that the remainder of the metal plate, except for both ends thereof, is rolled, Coating, hardening, cooling, washing and rolling processes.

As shown in FIGS. 1 to 3, the first rolling process is a primary rolling process of the metal plate to be fed, and is a metal plate made of a metal material such as stainless steel or the like, Is performed by a first rolling apparatus (10) of a multi-stage rolling system for rolling.

The first rolling apparatus 10 includes a first work roll R1 and a plurality of rolls for supporting the first work roll R1. It is preferable that the first rolling apparatus 10 is a 20-stage multi-stage rolling system which is easy to roll the steel sheet and has a good rolling rate and can reduce the number of rolling passes.

In the first rolling process, the metal plate is passed through the first rolling device 10 for several passes. In the present invention, the rolling pass is performed three to four times. As the rolling passes are repeated, So that it is possible to realize refinement of crystal grains.

Next, the second rolling process is a process for imparting roughness to form a strong coating layer on the surface of the metal plate. The first rolling process (R1) of the first rolling apparatus (10) R2), and then the primary rolled metal plate is rolled to give roughness to the surface.

The roughness is imparted to the surface of the second work roll R2 by sequentially performing the following roughing process, medium-roughing process and turning process. The roughing step is a step of grinding the second work roll R2 to remove the fatigue layer. In the medium cutting step, the surface of the roughly grounded second work roll R2 is ground to be mirror-finished, , And the turning process is a process of grinding the surface of the second work roll (R2) to be rough so as to be relatively larger than the grinding amount in the roughing process. The difference in the amount of grinding is given to that the surface of the second work roll R2 is not the same in diameter and has a tolerance, so that the surface is finely grinded in the roughing and medium cutting processes to uniformize the diameter to facilitate the formation of roughness , And the arithmetic average roughness of the surface of the second work roll (R2) in the turning process is required to achieve the required constant value.

When the second rolling process is performed, roughness is formed on the metal plate, so that the application of the rubber resin on the surface of the metal plate is relatively easier than the formation of the coating layer on the conventional smooth plate, It becomes more solid.

Subsequently, the coating process is a process of forming a coating layer by applying a coating material to the surface of a metal plate, which is secondarily rolled and has roughness on the surface thereof. Herein, various materials such as a UV curing type paint or a synthetic rubber resin such as a fluorine type or a silicone type can be used as the coating material. In the present invention, a synthetic resin material is used as a coating material to provide a metal plate An embodiment to be described will be described.

Such a coating process includes a coating apparatus 20 including a container in which a coating material is stored, a coating apparatus 20 for coating a metal plate transferred from the first rolling apparatus into a container and applying a rubber resin to the metal plate to form a coating layer on the surface of the metal plate Lt; / RTI > The coating apparatus 20 may further include a hot air blower installed around the container to create a high-temperature atmosphere.

" 형상으로 이루어지며 내부가 외곽측과 내곽측으로 구획되되 외곽측에서 내곽측을 따라 코팅공정을 거친 금속플레이트를 이송시키는 트랙케이싱(300)을 포함하는 경화장치(30)에서 순차적으로 이루어지게 된다.Next, as shown in FIG. 2 and FIGS. 4 to 8, the curing process is a process of curing a metal plate on which a coating layer is formed by infrared rays and heating. This curing process is intended to increase the transfer speed of the metal plate while minimizing the specific gravity occupied by the longitudinal direction in the apparatus for curing the coating layer of the metal plate,

And a hardening device 30 including a track casing 300 which is divided into an outer side and an inner side and which carries a metal plate through a coating process from the outer side to the inner side.

" 형 트랙에서 진입하는 금속플레이트는 외곽측을 지나 내곽측을 따라서 배출되는 궤적을 따르게 된다.The transfer trajectory of the metal plate in the hardening process is shown in Fig.

The metal plate entering in the "type track " follows the trajectory along the outer edge side and along the inner edge side.

The hardening device 30 includes a track casing 300 for performing a hardening process along a track-shaped track of the metal plate, and a hardening unit installed inside the track casing for hardening the metal plate to be transferred.

First, the track casing 300 is divided into a first outer section 1OT, a first direction changing section 1TD, a second outer section 1TD, The first inner section IN and the fourth direction change section 4TD and the second outer section IN and the second outer section IN of the second direction change section 2OT, the second outer change section 2TD, the third outer section 3OT, the third direction change section 3TD, An inner section 2IN, a fifth direction changing section 5TD, and a third inner section 3IN.

As shown in FIGS. 5 to 6, the first outer section 1OT is a section in which the metal plate transferred from the coating apparatus enters and is transported. The first direction changing section 1TD is connected to the first outer section 1OT and the feeding direction of the metal plate is changed by 90 degrees along the clockwise direction. The second outer section 2OT is a section following the first direction change section 1TD. The second direction change section 2TD is connected to the second outer section 2TO and is a section where the transfer direction of the metal plate is changed by 90 degrees along the clockwise direction. The third outer section 3OT is a section following the second direction change section 2TD. The third direction changing section 3TD is connected to the third outer section 3OT and is changed in 90 degrees along the clockwise direction after the feeding direction of the metal plate is changed 90 degrees along the clockwise direction. The first inner section IN is followed by the third direction changing section 3TD. The fourth direction changing section 4TD is connected to the first inner section 1IN and the feeding direction of the metal plate is changed by 90 degrees in the counterclockwise direction. The second inner section 2IN is a section following the fourth direction changing section 4TD. The fifth direction changing section 5TD is connected to the second inner section 2IN, and the feeding direction of the metal plate is changed by 90 degrees along the counterclockwise direction. The third inner section 3IN is connected to the fifth direction changing section 5TD and is a section in which the metal plate advances.

The curing process to be performed in correspondence with each of the above-described sections may be a first far infrared ray irradiation process, a first heat curing process, a second far infrared ray irradiation process, a second heat curing process, a third far infrared ray irradiation process, a third heat curing process, A fourth thermal curing process, a second near infrared ray irradiation process, a fifth thermal curing process, and a third near infrared ray irradiation process.

The first far infrared ray irradiation process is performed in the first outer zone 1OT in detail, and is a step of irradiating the transferred metal plate with far-infrared rays to cure the metal plate. The first thermosetting step is performed in the first direction changing section 1TD, and is a step of curing the metal plate that has undergone the first far infrared ray curing step at a predetermined temperature. The second far infrared ray irradiation step is performed in the second outer section 2OT, and is a section for irradiating a far infrared ray on the metal plate subjected to the first thermal curing step to harden it. The second thermal curing step is performed in the second direction changing section 2TD and is a step of curing the metal plate that has been subjected to the second far infrared ray irradiation step to a predetermined temperature. The third far infrared ray irradiation step is performed in the third outer section 3OT, and is a step of irradiating a far infrared ray on the metal plate subjected to the second thermal curing step to harden it. The third thermal curing step is performed in the third direction changing section (3TD), and is a step of curing the metal plate that has been subjected to the third far infrared ray irradiation step to a predetermined temperature. The first near-infrared light irradiation step is performed in the first inner section 1IN, and is a step of irradiating near-infrared rays to the metal plate subjected to the third thermal curing step and curing it. The fourth thermal curing process is performed in the fourth direction change section (4TD), and is a process of curing the metal plate that has undergone the first near infrared ray irradiation process at a predetermined temperature. The second near infrared ray irradiation step is performed in the second inner section 2IN, and is a step of irradiating near-infrared rays to the metal plate subjected to the fourth thermal curing step and curing. The fifth thermal curing process is performed in the fifth direction changing section 5TD, and is a process of curing the metal plate subjected to the second near infrared ray irradiation process to a predetermined temperature. The third near-infrared ray irradiation step is performed in the third inner section 3IN, and is a step of irradiating near-infrared rays to the metal plate subjected to the fifth thermal curing step and curing.

Here, performing the first through fifth thermal curing processes is a problem in that far-infrared rays or near-infrared rays are not irradiated uniformly on the metal plate in a region where the transfer direction of the metal plate is rapidly changed. For curing through heating.

The first far infrared ray irradiation step, the first heat curing step, the second far infrared ray irradiation step, the second heat curing step, the third far infrared ray irradiation step, the third heat curing step, the first near infrared ray irradiation step, The second near infrared ray irradiation process, the fifth thermal curing process, and the third near infrared ray irradiation process are performed by a curing unit provided inside the track casing 300 of the curing device 30.

As shown in FIGS. 6 to 8, the curing unit includes a far infrared ray curing unit 310, a near-infrared ray curing unit 320, and a thermosetting unit 330.

The far infrared ray hardening unit 310 is installed in each of the first outer section 1OT, the second outer section 2OT and the third outer section 3OT and includes a reflection plate 311 and a far infrared ray heater 312 . The reflection plate 311 is coated with an infrared reflecting film and is installed on the inner wall of each of the first outer section 1OT, the second outer section 2OT and the third outer section 3OT to irradiate far infrared rays and thermal energy, As shown in FIG. The far infrared ray heater 312 is provided on each of the pair of reflection plates 311 of the reflection plate 311 so as to be convex along the transport direction of the metal plate to irradiate the far infrared ray to focus the outside of the coating layer do. Here, the far infrared ray heater 312 is controlled such that the temperature inside the first outer section 1OT, the second outer section 2OT, and the third outer section 3OT is set to a temperature within the range of 150 to 250 degrees Celsius Lt; / RTI >

The near infrared ray hardening unit 320 is installed in each of the first inner section 1 IN, the second inner section 2 IN and the third inner section 3 IN. The near infrared ray hardening unit 320 includes a reflection plate 321 and a near infrared ray heater 322 . The reflection plate 321 is coated with an infrared reflecting film and is provided on the inner wall of each of the first inner section 1 IN, the second inner section 2 IN and the third inner section 3 IN, As shown in FIG. The near infrared ray heater 322 is provided on each of the pair of reflection plates 321 of the reflection plate 321 in a convex shape along the transport direction of the metal plate and irradiates far infrared rays to harden the inside of the coating layer. Here, the near infrared ray heater 322 is controlled so that the temperature inside the first inner section 1 IN, the second inner section 2 IN and the third inner section 3 IN is set to be within a temperature range of 100 to 200 degrees centigrade Lt; / RTI >

In addition, the thermosetting unit 330 includes a first direction change section 1TD, a second direction change section 2TD, a third direction change section 3TD, a fourth direction change section 4TD, and a fifth direction change section 5TD and includes a first heat plate 331, a second heat plate 332, a ventilation hole 333, a heater 334, and a ventilation fan 335. The first heat insulating plate 331 is covered with a glass fiber insulating material and has a first direction changing section 1TD, a second direction changing section 2TD, a third direction changing section 3TD, a fourth direction changing section 4TD And the fifth direction changing section 5TD, the openings for transporting the metal plates are formed. The second insulating plate 332 is covered with a glass fiber insulating material and has a first direction changing section 1TD, a second direction changing section 2TD, a third direction changing section 3TD, a fourth direction changing section 4TD and the fifth direction changing section 5TD, respectively. The ventilation hole 333 is formed to communicate with the outside of the track casing on the second insulating plate 332 facing the first insulating plate 331. The heat generating heater 334 is installed on both sides of the ventilation hole 333 The ventilation fan 335 is installed in the ventilation hole 333 to supply air into the ventilation hole 333 or to discharge the inside air to the outside to maintain the internal temperature. Here, the heating heater 334 and the ventilating fan 335 are arranged in a first direction change section 1TD, a second direction change section 2TD, a third direction change section 3TD, a fourth direction change section 4TD, It is preferable that the internal temperature of the fifth direction changing section 5TD is controlled so as to form a temperature atmosphere within the range of 100 to 200 degrees centigrade.

Next, the cooling and washing process is a process of cooling and cleaning the hardened metal plate. In addition, nitrogen is sprayed onto the metal plate subjected to the third near infrared ray irradiation process to prevent cooling and oxidation, and a foreign substance And performs a process of blowing and inhalation.

The cooling and cleaning process described above is performed by the cooling and cleaning device 40 as shown in Fig. The cooling device 40 includes a cooling casing 400, a nitrogen supply line 410, and a dust suction line. In the cooling casing 400, openings for conveying the metal plates are formed on the front and rear sides of the cooling casing 400 where the metal plates are passed through the curing device 30. The nitrogen supply pipe 410 penetrates the upper and lower portions of the cooling casing 400 and is installed in a pair in the inside of the cooling casing 400. It is desirable that the injection port of the nitrogen supply line path 410 be installed so as to approach the metal plate by a distance not to affect the transfer of the metal plate. At the same time, the dust suction pipe 420 is installed on both sides of each of the nitrogen supply pipe 410 to suck dust contained in the metal plate.

The suction port of the dust suction pipe 420 is spaced apart from the metal plate which is relatively more transported than the jet port of the nitrogen supply pipe 410 so that nitrogen is sprayed on the surface of the coating layer by the injected nitrogen while minimizing the suction of nitrogen It may be desirable to improve the suction efficiency of the dusts.

Next, in the third rolling process, the metal plate subjected to the cooling and washing processes is rolled to impart roughness to the surface of the coating layer. This third rolling process is performed by the second rolling device 50. [ As shown in FIG. 10, the second rolling apparatus 50 has the same structure as that of the first rolling apparatus 10. The second rolling apparatus 50 is provided so as to be opposed to each other to roll the cooled and cleaned plate, And a plurality of rolls for supporting the work roll R3 and the third work roll R3. The metal plate transferred from the cooling and cleaning apparatus 40 is rolled to give a roughness to the surface of the coating layer of the metal plate and the metal plate is further rolled so that a strong coating layer is formed on the metal plate .

In sum, the main technical idea that the present invention intends to provide is to maximize the productivity by increasing the transfer speed of the metal plate in a process for forming a strong coating layer on the metal plate. It can be seen as described above that it is realized through the second rolling process and the curing process. That is, in the second rolling process, the surface roughness of the metal plate can be increased to increase the metal plate conveying speed in the coating process. On the basis of this, the trajectory of the metal plate is tracked during the hardening process, To be achieved.

It will be apparent to those skilled in the art that various modifications, substitutions, and alterations can be made hereto without departing from the spirit and scope of the present invention as defined by the appended claims. It will be possible. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention only as well as the appended claims. It is not. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: First rolling device
20: Coating device
30: Curing device
300: Track casing
310: far infrared rays hardening part
311: Reflecting plate
312: Far infrared heater
320: Near infrared ray hardening part
321: reflective plate
322: near-infrared heater
330: Thermal hardening part
331: first insulating plate
332: second insulating plate
333: Vents
334: Heating heater
335 Ventilation fan
40: Cooling washer
400: Cooling casing
410: Nitrogen feed line
420: dust suction pipe
50: Second rolling device

Claims (7)

A first rolling step of rolling the metal plate to be transferred;
A second rolling step of rolling the metal plate after the first rolling step to impart roughness to the surface;
A coating step of coating a metal plate subjected to the second rolling process to form a coating layer;
A curing step of curing the metal plate after the coating process;
A cooling and cleaning process for cooling and cleaning the metal plate after the curing process; And
And a third rolling step of rolling the metal plate subjected to the cooling and cleaning processes to impart roughness to the coated surface,
In the curing step,
Side "

And a track casing which is divided into an outer side and an inner side and which carries the metal plate through the coating process from the outer side to the inner side,
A first far-infrared ray irradiating step of irradiating a far infrared ray on the metal plate transferred to the track casing to cure the metal plate,
A first thermal curing step of curing the metal plate that has undergone the first far infrared ray curing process at a predetermined temperature,
A second far-infrared ray irradiating step of curing the metal plate after the first heat curing step by irradiating far-infrared rays,
A second thermal curing step of curing the metal plate that has been subjected to the second far infrared ray irradiation step to a predetermined temperature,
A third far-infrared ray irradiation step of irradiating far-infrared rays to the metal plate after the second heat-
A third thermal curing step of curing the metal plate that has been subjected to the third far infrared ray irradiation step to a predetermined temperature,
A first near-infrared ray irradiation step of curing the metal plate after the third thermal curing step by irradiating near infrared rays,
A fourth thermal curing step of curing the metal plate that has been subjected to the first near-infrared light irradiation step to a predetermined temperature,
A second near infrared ray irradiation step of curing the metal plate after the fourth thermal curing step by irradiating near infrared rays,
A fifth thermal curing step of curing the metal plate having undergone the second near-infrared irradiation step at a predetermined temperature,
A third near-infrared ray irradiation step of hardening the metal plate subjected to the fifth thermal curing step to irradiate near-
Wherein the metal plate is coated with a metal. delete The method according to claim 1,
The cooling and cleaning process may include,
Wherein nitrogen is sprayed onto the metal plate subjected to the third near infrared ray irradiation process to prevent cooling and oxidation of the metal plate and blowing out the metal plate to the surface of the metal plate, . A first work roll provided so as to face each other and a plurality of support rolls supporting the first work roll, rolling the metal plate to be transferred to a first work roll, A first rolling device that gives roughness to the surface of the metal plate as it is rolled and replaced with each of the rolls;
A coating apparatus which comprises a storage tank in which a rubber resin is stored to deposit a metal plate transferred from the first rolling apparatus in a storage tank to apply a rubber resin to a metal plate;
Side "

A track casing which is divided into an outer side and an inner side and which transports the metal plate conveyed from the coating device to the inner side along the outer side; A curing unit including a curing unit for curing the curing unit;
A nitrogen supply pipe for introducing a lukewarm nitrogen to the metal plate, the nitrogen supply pipe being provided in the cooling casing at a plurality of positions along the feeding direction of the metal plate in the cooling casing; And a dust suction pipe installed on both sides and sucking dust contained in the metal plate; And
And a third work roll having a surface-treated third work roll and a plurality of support rolls for supporting the third work roll. The metal roll is provided with a roughness imparting surface roughness to the surface of the metal plate 2 rolling device;
Wherein the metal plate is a metal plate. 5. The method of claim 4,
The track casing includes:
A first outer section in which the metal plate transferred from the coating apparatus enters,
A first direction changing section which is connected to the first outer section and in which the feeding direction of the metal plate is changed by 90 degrees along the clockwise direction,
The first direction changing section and the second outer section following the first direction changing section,
A second direction changing section which is connected to the second outer section and in which the transfer direction of the metal plate is changed by 90 degrees along the clockwise direction,
The second direction changing section and the third outer section,
A third direction changing section which is connected to the third outer section and changes the feeding direction of the metal plate by 90 degrees along the clockwise direction after 90 degrees of change along the clockwise direction,
A first inner section that is connected to the third direction change section,
A fourth direction changing section which is connected to the first inner section and in which the feeding direction of the metal plate is changed by 90 degrees in the counterclockwise direction,
The fourth direction changing section and the second inner section,
A fifth direction changing section which is connected to the second inner section and in which the feeding direction of the metal plate is changed by 90 degrees in the counterclockwise direction,
And a third inner section connected to the fifth direction changing section and allowing the metal plate to advance. 6. The method of claim 5,
The curing unit includes:
A reflection plate provided along the inner wall of each of the first outer section, the second outer section and the third outer section, and a pair of reflection plates facing each other in the reflection plate, A far infrared ray hardening part provided along the far infrared ray heater and irradiating far infrared ray,
A reflection plate provided along the inner wall of each of the first inner section, the second inner section and the third inner section, and a pair of reflection plates opposed to each other in the reflection plate, A near-infrared ray hardening portion provided along the near-infrared ray heater and including a near-infrared heater for irradiating near-
The first direction changing section, the second direction changing section, the third direction changing section, the fourth direction changing section, and the fifth direction changing section are provided on the front and rear sides of the metal plate feeding direction, A second insulating plate provided along an inner wall of the first insulating plate, and a second insulating plate facing the first insulating plate, the first insulating plate having an opening for transferring the metal plate, A plurality of heat-generating heaters provided on both sides of the ventilation holes, and a ventilation fan installed in the ventilation holes,
Wherein the metal plate is a metal plate. 5. The method of claim 4,
Wherein a suction port of the dust suction pipe is installed to be spaced apart from a metal plate which is relatively moved with respect to an injection port of the nitrogen supply pipe.

Images