JPH09201569A - Coating method for uneven metal plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make clear an application line between the surface of a projection and the recession of a joint by preventing coating material from dropping from the surface of the projection when the surface of the projection is coated with the coating material. SOLUTION: When the surface of the projections 6 of an uneven metal plate 4 which was made uneven by pressing is coated, the metal plate 4 is sent with the surface of the projections 6 turned downward, and the surface of the projections 6 of the plate 4 which is pressed by a back mold 15 arranged along the back of the plate 4 above a stamp base 14 whose upper surface is coated with coating material 12 is coated with the paint 12. In this way, the paint can be applied by the stamp base with the surface of the projections turned downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coating a surface of a convex portion of a metal plate with protrusions and depressions when forming a metal siding board, for example.

[0002]

2. Description of the Related Art Conventionally, when forming a metal siding board, the steps shown in FIG. 4 have been performed. FIG. 4 (a)
Rewind the metal strip 2 from the uncoiler 1 like
As shown in FIG. 4 (b), the metal strip 2 is pressed by the press device 3 to form irregularities regularly, and then the strip 2 is cut to a fixed length and subjected to shearing and trimming.
A rectangular plate-shaped metal plate 4 having unevenness as shown in (c) is formed, and then the surface of the convex portion 6 of the metal plate 4 having unevenness is coated with a roll coater device 5 as shown in FIG. 4 (d). , Then Fig. 4
As shown in (e), the coating material is baked by the baking device 7 and dried by the drying device 8, and then the actual parts are formed by the actual processing devices 19 on both sides of the uneven metal plate 4 as shown in FIG. 4 (f). Then, a backing material such as a foamed synthetic resin is lined on the back surface of the uneven metal plate 4 to form a siding board 10 as shown in FIG. 4 (g), and then a packaging box 11 as shown in FIG. 4 (h). I put it in and pack it.

[0003]

By the way, in the above-mentioned conventional example, when the surface of the convex portion 6 of the uneven metal plate 4 is coated,
As shown in FIG. 5, the coater roll 5a is brought into contact with the surface of the convex portion 6 of the uneven metal plate 4, and the coating material 12 is coated (specifically, the convex portion of the uneven metal plate is coated with a roll coater. Japanese Patent Laid-Open No. 63-130167 and Japanese Patent Laid-Open No. 56-147663), but when the surface of the convex portion 6 formed by deep drawing or the like is coated with a coater roll 5a, they are adjacent to each other. There is a problem in that the paint 12 is likely to drip in the joint concave portion 13 between the convex portions 6, and the application line at the boundary between the surface of the convex portion 6 and the joint concave portion 13 is difficult to appear neatly.

The present invention has been made in view of the above-mentioned points. When the coating material is applied to the surface of the convex portion, the coating material does not drip from the surface of the convex portion so that the surface of the convex portion and the joint concave portion are separated from each other. The task is to clean the coating line between them.

[0005]

In order to solve the above-mentioned problems, the method for coating a metal plate with projections and depressions according to the present invention is a coating method in which the surface of the projections 6 of the metal sheet 4 with projections and depressions provided with projections and depressions is painted. A stamp stand 1 in which a metal plate 4 with projections and depressions is fed so that the surface of the convex portion 6 faces downward, and the coating material 12 is applied to the upper surface thereof.
4, the back mold 15 is provided along the back surface of the uneven metal plate 4 to press the uneven metal plate 4 to coat the surface of the convex portion 6 of the uneven metal plate 4 with the coating material 12. As described above, by applying the paint 12 on the surface of the stamp base 14 in a stamp type with the surface of the convex portion 6 facing downward, the paint 12 applied to the surface of the convex portion 6 does not drip into the joint concave portion 13,
The coating line between the convex portion 6 and the joint concave portion 13 can be made clean.

It is also preferable that the uneven metal plate 4 is provided with regular unevenness, and the uneven metal plate 4 is intermittently fed every span so that the surface of the convex portion 6 is coated.
In this case, it is possible to intermittently feed the uneven metal plate 4 by a predetermined size and sequentially apply the coating material 12 to the surface of the convex portion 6.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The steps of manufacturing a siding board are the same as those of the conventional example except that the surface of the metal plate 4 having projections and depressions is coated, and the steps are as shown in FIG. First, as shown in FIG. 2A, a metal strip 2 such as a steel plate is unwound from the uncoiler 1 and is regularly pressed onto the metal strip 2 by the press device 3 as shown in FIG. 2B. Form irregularities. That is, the rectangular convex portions 6 are formed in a matrix, and the joint concave portions 13 are formed in a lattice shape between the adjacent convex portions 2. The band plate 2 is a coated metal plate called a color steel plate, and the entire plate is coated to fit the joint groove 13. After forming the unevenness on the strip 2 by press molding, the strip 2 is cut into a standard size and subjected to shirring or trimming to form a rectangular plate-shaped uneven metal plate 4 as shown in FIG. 2C. Then, as shown in FIG. 2D, the stamp coating device A is used for coating.

As shown in FIG. 1A, the stamp coating device A is composed of a stamp base 14, a paint roller 16 and a back mold 15. The stamp base 14 is made of a material having relatively elasticity such as foamed synthetic resin, and has a smooth upper surface. The paint roller 16 rolls on the surface of the stamp base 14 to apply the paint 12, and the paint roller 16 travels on the stamp base 14 in the longitudinal direction of the stamp base 14 to apply the paint 12 to the entire surface of the stamp base 14.
Is to be applied. Back mold 15 is stamp stand 14
It is arranged so as to be able to move up and down on the upper surface of the stamp and presses the uneven metal plate 4 against the stamp base 14. Back type 15
Is formed of a material such as rubber or resin, and the lower surface is provided with unevenness 17 along the back surface of the uneven metal plate 4. Then, when the stamped plate 14 and the back mold 15 are opened, the uneven metal plate 4 is fed between the stamped plate 14 and the back mold 15 with the convex portion 6 facing downward. Back type 1
5 is lowered a little and the unevenness 17 of the back mold 15 is made to follow the back surface of the uneven metal plate 4 and the uneven metal plate 4 is held by the back mold 15. From this state, the uneven metal 17 is formed together with the back mold 15. The plate 4 is further lowered, the surface of the convex portion 6 of the uneven metal plate 4 is pressed against the stamp table 14, and the paint 12 on the stamp table 14 is stamped on the surface of the convex portion 6 as shown in FIG. It is applied with. Paint 12 on the surface of the convex portion 6
With the back mold 15 coated with the metal plate 4 with unevenness
Are lifted, the metal plate 4 with unevenness is separated from the back mold 15, and the metal plate 4 with unevenness is fed. In the case of this example, the uneven metal plate 4 is intermittently fed at a predetermined span, and coating is sequentially performed in the longitudinal direction of the uneven metal plate 4.

When the coating material 12 is applied to the surface of the convex portion 6 of the uneven metal plate 4 as described above, the coating material 12 on the surface of the convex portion 6 does not drip toward the joint concave portion 13 side and the surface of the convex portion 6 and the joint. The coating line between the concave portion 13 and the concave portion 13 appears neatly. After applying the coating material with the stamp coating device A as described above, FIG.
As shown in (e), the paint is baked by the baking device 7 and dried by the drying device 8, and then the real parts 9 are formed on both sides of the uneven metal plate 4 by the real processing devices 19 as shown in FIG. 2 (f). Form. At this time, the female seeds 9a are formed on one side of the uneven metal plate 4, and the male seeds 9b fitted to the female seeds 9a are formed on the other side. Then, a backing material 18 such as a foamed synthetic resin is lined on the back surface of the metal plate 4 having the unevenness, and the back surface of FIG.
The siding board 10 as shown in FIG. 2 is formed, and then put in the packaging box 11 as shown in FIG.

[0010]

As described above, the present invention sends a metal plate with projections and depressions so that the surfaces of the projections face downward, and a back mold along the back surface of the metal plate with projections and depressions above a stamp table coated with paint on the upper surface. Since the paint is applied to the surface of the convex part of the uneven metal plate by pressing with the uneven metal plate with, the paint of the surface of the stamp base will be applied in a stamp type with the surface of the convex part facing downwards. As with the coater method, the paint applied to the surface of the convex portion does not drip into the joint concave portion, and the coating line between the convex portion and the joint concave portion can be made clean and a good appearance can be applied. It can be applied.

According to the second aspect of the present invention, the uneven metal plate is provided with regular unevenness, and the uneven metal plate is intermittently fed at intervals of one span to coat the surface of the convex portion. Therefore, the uneven metal plate can be intermittently fed by a predetermined size to sequentially apply the coating to the surface of the convex portion, and the uneven metal plate can be sequentially applied with the paint.

[Brief description of drawings]

FIG. 1A is a sectional view showing a state in which a coating material is applied to a metal plate with projections and depressions of the present invention, and FIG.

FIG. 2 is an explanatory view showing a process of manufacturing the above sizing board.

FIG. 3 shows a sizing board obtained by the same as above,
(A) is a plan view and (b) is a sectional view.

FIG. 4 is an explanatory view showing a process of manufacturing a conventional sizing board.

FIG. 5 is a cross-sectional view showing a state where a coating material is applied to a metal plate with projections and depressions in a conventional example.

[Explanation of symbols]

 4 Metal plate with unevenness 6 Convex part 12 Paint 13 Joint recess 14 Stamp stand 15 Back type

Claims (2)

[Claims] 1. A coating method for coating the surface of a convex portion of an uneven metal plate having irregularities by pressing, wherein the uneven metal plate is fed so that the surface of the convex portion faces downward, A metal plate with projections and depressions characterized in that a metal mold with projections and depressions is pressed by a back mold along the back surface of the metal plate with projections and coated on the surface of the projections of the projections and depressions of the metal plate to which the paint is applied. How to paint. 2. The uneven surface according to claim 1, wherein the uneven metal plate is provided with regular unevenness, and the uneven metal plate is intermittently fed every span to coat the surface of the convex portion. How to paint a metal plate.