JP4512931B2 - Exterior wall coating equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an outer wall material coating apparatus.
[0002]
[Prior art]
The fiber reinforced cement board that is widely used as an outer wall material is gray-white to gray-black in color, and it is poor in design, so it can be decorated with various colors to provide surface waterproofing. Is called.
[0003]
By the way, at present, there are two main types of coating methods that are suitable for blurring patterns for surface coloring of these outer wall materials and for painting with two or more colors separately, using inkjet and spray guns. is occupying.
[0004]
By the way, the former ink-jet method has a problem that, in order to obtain a blur pattern, blurring by color matching of two or more colors is the center, and a shade pattern of one color cannot be represented. Furthermore, since coating is performed so that a wide surface is filled with small dots from a minute nozzle, there is a problem that it takes time and the processing speed is slow.
[0005]
On the other hand, the latter spray gun method is too monotonous with a single spray gun, and a large number of nozzles are added to solve this, and the density is controlled by controlling the spraying time and the amount of paint supplied for each nozzle. When this was attempted, there was a problem that stripes were formed on the wallboard surface due to the overlap of the spray patterns of the spray guns.
[0006]
Therefore, a method has been considered in which the disadvantages of the inkjet method and the spray method can be compensated for by the mutual advantages, and the spray pattern is colored and coated in a circular to elliptical shape.
[0007]
In this method, since the circle-oval shape representing the pattern is a small spray pattern, the area of each circle-oval pattern can be widened, and the coating speed can be increased very much, and the circle-oval shape is also increased. There is an advantage that a complicated line drawing pattern such as an ink jet can be drawn by combining the shape patterns.
[0008]
[Problems to be solved by the invention]
However, in order to use the circular to elliptical spray pattern, it is necessary to arrange the drawn circular to elliptical spray patterns without any gaps. However, when the spray pattern is as small as about 10 mm in diameter, the interval is reduced. Even if the spray guns 1 are difficult to be arranged because they are too narrow, the jets Z and Z interfere with each other as shown by the dotted lines in FIG. There is a problem that the shape of the pattern 1a (FIG. 5A) becomes unstable.
[0009]
For this reason, it was necessary to develop a small spray device, and there was a problem that implementation was not easy.
In addition to such interference, there is a problem that the spray pattern of the spray guns 1b and 1b located on the outermost side may deviate from the target coating position regardless of the control command, as shown in FIG. there were.
[0010]
This is presumably because the spray conditions are different from the spray guns 1... 1 in the central belt sprayed on both sides due to the absence of the spray gun on the outside.
The present invention solves the above-mentioned problems, and even if a conventional spray gun is used, it is possible to paint the spray array with a sufficient spacing, and to draw a circular to elliptical spray pattern to be drawn. It has been made as an object to realize a state of being closely adjacent.
[0011]
[Means for Solving the Problems]
That is, in the coating method of the outer wall material according to claim 1, a plurality of spray guns in which the spray pattern sprayed on the surface of the outer wall material is circular to elliptical are arranged in a direction orthogonal to the transfer direction of the outer wall material. The spray pattern is continuously continuous in the orthogonal direction, and each spray gun completely draws the contour spray pattern with one intermittent spray on the outer wall material surface to be transferred. In the outer wall material coating apparatus, the spray guns are arranged in a plurality of rows along the transfer direction of the outer wall material, and the spray guns in each row are arranged in a staggered manner and are adjacent in each row. the gap between the spray gun is disposed at a distance that does not interfere in the spray pattern, the spray gun rows arranged over a plurality of rows along the transfer direction of the outer wall member In, characterized in that a length of the partition plate does not reach the wall board surface than the spout of the spray.
[0012]
Therefore, according to the coating apparatus for an outer wall material of the present invention, even when circular to elliptical spray patterns are arranged without gaps, a plurality of rows of spray guns for drawing the spray patterns are provided along the transfer direction. In addition, since the staggered arrangement is adopted, the adjacent distances between the spray guns can be made sufficiently large, so that drawing can be easily performed even at a narrow interval.
[0013]
In addition, when drawing, it is possible to give a margin to the interval between adjacent jets, so that drawing can be performed with good linearity .
[0014]
Even if the spray gun rows are arranged at a narrow interval, the jet flow is partitioned by the partition plate, so that they do not interfere with each other and hinder linearity.
According to a second aspect of the present invention, there is provided a coating apparatus for an outer wall material, in which spray guns for injecting only air are installed at both ends of a plurality of spray gun rows arranged in a direction orthogonal to the direction in which the outer wall material is transferred.
[0015]
The spray gun in the center band is sandwiched between other spray guns on both sides, and the downdraft caused by the jet and the blowback of the airflow that collided with the paint surface act. The spray condition is the same as the spray pattern of the central belt even with the outer spray gun.
[0016]
Therefore, even the spray gun located on the outermost side on both sides can be drawn in the same manner as the spray gun in the central band.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described.
1 is a plan view of a coating apparatus for an outer wall material according to an embodiment, FIG. 2 is an explanatory view of an arrangement state of a spray gun of the coating apparatus shown in FIG. 1, and FIG. 3 is a spray gun in the coating apparatus shown in FIG. It is explanatory drawing which shows the arrangement | positioning state of a spray pattern.
Embodiment 1
In FIG. 1, reference numerals 1... 1 denote spray guns arranged in a large number, and are supported by a base frame 2 in a direction orthogonal to the transfer direction on a conveyor 11 to which the outer wall material 10 is transferred as indicated by arrows. Yes.
[0018]
In FIG. 1, the spray pattern 1a on the surface of the outer wall material 10 of each spray gun 1 is circular or elliptical as shown in FIG. 5 (a), and its diameter d is preferably 6 mm to 15 mm. In this case, the shape is circular or elliptical with a diameter d = 10 mm.
[0019]
As shown in FIG. 1, the spray guns 1... 1 are divided into two groups, and spray guns 1, 1 of each group are arranged at the front and rear positions along the transport conveyor 11, and the nozzles of each spray gun 1, 1. Are arranged in a zigzag arrangement as shown in FIGS.
[0020]
As shown in FIG. 3, the spray pattern 1a drawn by spraying is arranged continuously in series as a result when the outer wall material 10 advances in the arrow direction.
[0021]
Accordingly, the distance D in the width direction of the spray guns 1... 1 arranged in a row may be 20 mm in this embodiment, and the spray gun 1 is spread over a wide distance even though the spray pattern is sprayed at intervals of 10 mm. ... 1 can be arranged.
[0022]
As shown in FIG. 4, each of the spray guns 1 has a plunger 5 of a solenoid 4 directly connected to an open / close needle 3 and sprays paint supplied from a paint supply port 6 with high-pressure air supplied from an air supply port 7. Has been made to be done with quick action.
[0023]
In the figure, 6a indicates a paint passage formed concentrically around the opening / closing needle 3, and 7a indicates an air passage formed concentrically around the paint passage 6a.
The opening time of the opening / closing needle 3 by the solenoid 4 is a spray pattern Z having a diameter d of about 10 mm as shown in FIG. It is time to draw. Then, the color density is adjusted by setting the spray time shorter than the longest time P as a reference in the time that the spray pattern produced by the next spray becomes continuous as shown in the figure. It has been made possible.
[0024]
That is, as the injection time P, when the transfer speed of the conveyor 11 is 30 m / min, every 20 milliseconds (hereinafter referred to as “mS”) is a delimited unit as shown in FIG. P, and as shown in FIG. 5 (b), the opening / closing time is 1 to 20 mS.
[0025]
When the transfer speed of the transfer conveyor 11 is 48 m / min, P = 12.5 mS is set as a delimiter unit, and the opening / closing time is 1 to 12.5 mS, and the transfer speed of the transfer conveyor 11 is 24 m / min. In this case, P = 25.0 mS is used as a delimiter unit, and the opening / closing time is 1 to 25 mS.
[0026]
Accordingly, it is possible to adjust the coloring of the light and shade depending on the length of the ejection time.
In the above description, the spray pattern 1a is shown as a clearly contoured circle for the purpose of illustration. However, the spray patterns 1a and 1a which are adjacent to each other are actually ones without drawing a clear boundary. It becomes the painted surface.
[0027]
Thereby, the light and shade coloring pattern is vividly added based on the control information.
Moreover, although the case where one kind of coating material is sprayed from the coating device in the above embodiment has been described, the invention is not limited to this, and two or more spray devices are arranged along the same belt conveyor, and different coating materials are used. By spraying, it can be made a multicolored paint pattern.
Embodiment 2
FIG. 6 is a side view of the second embodiment.
[0028]
As shown in FIG. 6, the coating apparatus for the outer wall material according to the second embodiment includes a row 1c of spray guns 1 arranged in a plurality of rows along the transfer direction of the outer wall material of the spray gun 1 according to the first embodiment. In the middle, partition plates 12... 12 that do not reach the surface of the outer wall material 10 are arranged.
[0029]
The partition plates 12 ... 12 do not allow the jets Z of the adjacent spray gun rows 1c to contact each other, thereby improving the linearity of spray coating.
Embodiment 3
The coating apparatus for the outer wall material of the third embodiment is a spray gun that injects only air A as shown in FIG. 7 on both outermost sides in the row 1c of the spray guns 1. 1b and 1b are added.
[0030]
In this case, since the air A is sprayed from the spray gun 1b at the same pressure as the spray gun 1 for spraying paint, the spray gun 1b and 1b sprays paint on the outer wall material 10 at the outermost side. The conditions are the same as those of the spray gun 1... 1 spraying in the central zone, and the spraying condition of the spray flow Z is unified, so that uniform coating is possible.
[0031]
In addition, the spray gun 1 shown with a dotted line in the drawing shows the other row, and shows a situation where the other row is in a staggered arrangement.
[0032]
【The invention's effect】
Since the present invention is configured as described above, according to the first aspect of the present invention, when the outer wall material surface is coated using a spray device, the entire surface is coated seamlessly with a circular to elliptical intermittent injection. Even if the spray pattern has a very small diameter, the spray gun itself can be arranged at a distance twice that of the spray pattern. Can be used.
[0033]
According to the coating apparatus for the outer wall material of claim 2, when the interval between the spray gun rows arranged in a staggered manner is reduced, interference between the spray gun rows is prevented by the partition plate, so that the coating with the circular to elliptical spray pattern is performed. Easy to do.
[0034]
According to the invention of claim 3, the spray guns located at both ends when a large number of spray guns are arranged are also the same as the nozzles located in the central band by the air ejected from the spray gun provided on the outer side. Since it becomes spraying conditions, the whole can be made into the uniform coating surface.
[Brief description of the drawings]
FIG. 1 is a plan view of an outer wall material coating apparatus according to the present invention.
FIG. 2 is an explanatory view of the arrangement state of a spray gun of the coating apparatus for an outer wall material according to the present invention.
FIG. 3 is an explanatory diagram of a painting pattern by a spray gun.
FIG. 4 is a sectional view of a spray gun of the coating apparatus for an outer wall material according to the present invention.
5A and 5B are explanatory diagrams of a spray pattern according to the present invention, in which FIG. 5A is a plan view and a graph showing the size of one spray pattern, and FIG. 5B is an injection time of one spray gun and the density of the spray pattern. It is the top view and graph which show the relationship.
FIG. 6 is a front view of an essential part of another embodiment of a coating apparatus for an outer wall material according to the present invention.
FIG. 7 is a front view of an essential part of still another embodiment of the coating apparatus for an outer wall material according to the present invention.
FIG. 8 is an explanatory diagram of an arrangement state of a spray gun of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Spray gun 2 Base frame 3 Opening / closing needle 4 Solenoid 5 Plunger 6 Paint supply supply port 7 Air supply port 10 Outer wall material 12 Partition plate 16 Spray gun which injects only air

Claims (2)

A large number of spray guns having a circular to elliptical spray pattern sprayed on the surface of the outer wall material are arranged in a direction orthogonal to the transfer direction of the outer wall material, and the spray pattern of the spray gun is substantially interrupted in the orthogonal direction. In each of the spray guns, the spray gun is continuously drawn, and the spray pattern of the contour is completely drawn by one intermittent spray on the surface of the outer wall material to be transferred. Are arranged in multiple rows along the transfer direction of the outer wall material, the spray guns in each row are arranged in a staggered manner, and the gap between adjacent spray guns in each row is set so that the spray pattern does not interfere with each other. separated to become disposed, between the spray gun rows arranged over a plurality of rows along the transfer direction of the outer wall member, the wall plate surface than the spout of the spray Coating apparatus of the outer wall member, characterized in that a length of the partition plate, not. 2. The coating apparatus for an outer wall material according to claim 1, wherein spray guns that inject only air are installed at both ends of a plurality of spray gun rows arranged in a direction orthogonal to the direction in which the outer wall material is transferred .

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