JP3263298B2 - How to paint building materials - Google Patents

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 building material by partially coating the building material with a curtain flow coater.

[0002]

2. Description of the Related Art In recent years, as a roofing material for a house, there is a roofing material in which the surface of a cement-based inorganic plate is coated with good weather resistance to improve the appearance and waterproofness. However, since the weather-resistant paint used for painting this roofing material is expensive, the part of the roofing material that is applied repeatedly (that is, the part covered by other roofing material) is not painted, In many cases, only the exposed portions are painted, or partial painting is performed, thereby reducing the amount of paint used and reducing costs. Generally, the coating of the roofing material is performed by a curtain flow coater having excellent coating film quality and coating efficiency.
As shown in Japanese Unexamined Patent Publication No. 875 (see FIG. 7), an unnecessary paint collection gutter 5 that receives an unnecessary paint curtain film 4 in a range corresponding to the non-painted portion 3 of the roof material 2 below the paint outlet of the curtain flow coater 1. Is installed, and the roof material 2 is partially coated with a paint curtain film 6 flowing down the outside of the unnecessary paint collection gutter 5.

[0003]

However, in the above-mentioned conventional coating method, the means for determining the boundary position between the non-painted portion 3 and the painted portion 7 of the roofing material 2 (hereinafter referred to as "painting boundary position") is a means for collecting unnecessary paint. Since the gutter 5 is used, when adjusting the coating boundary position according to the type of the roofing material 2 or the like, it is necessary to replace the unnecessary paint collection gutter 5 with one having a different width, which is extremely troublesome. Moreover, the paint curtain film 6 is not easily cut off by the side wall of the unnecessary paint collecting gutter 5, causing a variation in the coating state at the coating boundary position. 5 falls down on the unpainted portion 3 of the roofing material 2 along the lower surface of the bottom wall. This tendency becomes more remarkable as the position of the waste paint collecting gutter 5 becomes higher, and there is a disadvantage that the coating quality is generally deteriorated.

[0004] The present invention has been made in view of such circumstances, and an object of the present invention is to eliminate coating variations at the coating boundary portion when partially coating building materials and to determine the coating boundary position. An object of the present invention is to provide a coating method for a building material which can be easily adjusted and can be applied with a partial coating of excellent quality.

[0005]

According to a first aspect of the present invention, there is provided a method for coating a building material, comprising the steps of: feeding a building material conveyed by a conveyor with a slit-shaped paint outlet of a curtain flow coater; A method of partially coating with paint flowing down from the curtain in a curtain shape, wherein a paint guide is attached to a predetermined position of a paint outlet of the curtain flow coater in a hanging manner so that a boundary between a painted portion and a non-painted portion of the building material. In addition to setting the position (painting boundary position), the building material and the boundary between the painted part and the unpainted part
A groove extending along the groove is formed.
It will be used as drainage after construction .

In this coating method, the position of the coating boundary side edge of the coating curtain film flowing down from the coating flow outlet of the curtain flow coater is accurately determined by the coating guide, and the coating boundary position of the building material is maintained at a fixed position by the coating guide. Dripping. In addition, the building material has a painted part and an unpainted part.
A groove extending along the boundary line is formed.
The paint curtain can be used by using
Collect excess paint at the end of the coating boundary in the groove.
That the coating near the paint boundary becomes too thick
To prevent the paint drying time from being prolonged.
The coating near the boundary becomes thicker, which increases the paint drying time
Or cause foaming). Also, at the time of construction
Is to overlay other building materials on the unpainted parts and grooves of the building materials
By installing, drainage of building material grooves prevents rainwater intrusion
It can be used as a groove.

In this case, a paint guide is provided.
Paint guide by a paint boundary position adjustment mechanism connected to the
Of the lower end of the box in a direction almost perpendicular to the direction of transport of the building material
Thus, the position of the paint boundary may be adjusted. this
So that it flows from the lower edge of the paint guide to the surface of the building material.
The position of the edge of the falling paint curtain film on the paint border side (paint border
Field position) can be easily adjusted. Further, the claims
In 3 , in the paint boundary position adjusting mechanism, an unnecessary paint collecting gutter for collecting the unnecessary paint flowing down from the paint outlet of the curtain flow coater to the non-painting portion side above the building material is attached, and the paint guide is adjusted in position. By doing so, the position of the unnecessary paint collecting gutter can be adjusted at the same time.
This saves the trouble of adjusting the position of the unnecessary paint collecting gutter in accordance with the adjustment of the position of the paint guide, thereby facilitating the position adjustment work.

[0008]

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, the configuration of the curtain flow coater 11 will be described with reference to FIG. A horizontally long paint hopper 14 is installed on a belt conveyor 13 that transports a cement-based roofing material 12 as a building material to a painting position. A slit-shaped paint outlet (not shown) is formed on the lower surface of the paint hopper 14, and the paint outlet extends in a direction perpendicular to the transport direction of the roofing material 12. Further, a pair of paint guides 15 and 16 for adjusting the width of the paint curtain film 17 flowing down from the paint outlet of the paint hopper 14 in accordance with the width of the painted portion of the roofing material 12 hang down on the lower surface of the paint hopper 14 with bolts or the like. And the lower ends of the paint guides 15 and 16 extend to near the surface of the roofing material 12. Further, the mounting position of the paint guide 16 on the paint boundary side (right side) can be changed with bolts or the like according to the width of the paint portion of the roofing material 12.

Since the curtain flow coater 11 is of a general purpose so as to be able to coat even a relatively large object to be coated, the paint curtain film 1 used for coating the roofing material 12 is used.
7 (that is, the interval between the two paint guides 15 and 16) is smaller than the width of the paint outlet of the paint hopper 14, so that an unnecessary paint curtain film 18 is provided on the right of the paint curtain film 17 used for painting. Can be done. The waste paint curtain film 18 is guided into the waste paint collection gutter 21 by a pair of waste paint guides 19 and 20 attached to the lower surface of the paint hopper 14 by bolts or the like.

Next, the configuration of the coating boundary position adjusting mechanism 26 for adjusting the position of the lower end of the coating guide 16 on the coating boundary side will be described. An intermediate portion of the paint guide 16 on the paint boundary side and a left side surface of the unnecessary paint collecting gutter 21 are connected via a connecting portion 22. The unused paint collection gutter 21 is supported so as to be slidable on the frame 23 in the left-right direction (a direction perpendicular to the direction of transport of the roofing material 12), and is fixed to the right side of the unused paint collection gutter 21 rightward. An adjustment bolt 24 is screwed into a screw portion 25 provided on the frame 23. Then, the screw portion 25 is manually rotated to move the position adjusting bolt 24.
Is moved in the left-right direction, the unnecessary paint collection gutter 21 and the connecting portion 22 are slid in the left-right direction integrally therewith, and as a result, as shown in FIG.
6 can be adjusted in the left-right direction.

As shown in FIG. 1B, a paint collecting gutter 27 is provided below the paint hopper 14 to collect paint that has not been applied to the roofing material 12 by utilizing a gap between the belt conveyors 13. It has been installed. This paint collection gutter 27
The paint collected by the unnecessary paint collecting gutter 21 is collected in a paint tank (not shown), and the paint in the paint tank is sent into the paint hopper 14 by a pump (not shown).

On the other hand, as shown in FIGS. 2 and 3, a groove 28 is formed in the roofing material 12 and extends continuously along the boundary between the painted portion and the unpainted portion.
8 is used as a paint pool. At the time of construction, roof material 1
2 unpainted part and part including groove 28 (hatched part in FIG. 3)
Another roofing material 12 is overlaid from above, and attached to the roof with nails or the like. Therefore, after the construction, as shown in FIG. 4, only the painted portion (the portion below the groove 28) of the roofing material 12 is exposed to the outside, and the groove 28 of each roofing material 12 is It is arranged in a straight line horizontally while being covered with the material 12, and is used as a drainage groove for preventing rainwater from entering.

In the case of partially coating the roofing material 12 having such a shape, a sealer is previously coated on the entire surface of the roofing material 12 as a base coat using a usual coating apparatus. As the sealer, use is made of a paint that has good permeability, does not deteriorate with alkali, and has excellent compatibility with the paint to be applied the second time. afterwards,
Repeat the base coating as necessary, and in the final coating process,
The roof material 12 is partially coated as follows using the curtain flow coater 11 of FIGS. 1 and 2. First, the painted portion of the roofing material 12 is positioned with the groove 28 oriented in the transport direction with the left side facing the left side, and the roofing material 12 is placed on the belt conveyor 13 and transported to the painting position. In the painting position, as shown in FIG. 2, the position of the lower end of the paint guide 16 on the painting boundary side (right side) is adjusted in the left-right direction by rotating the screw portion 25 of the painting boundary position adjusting mechanism 26 in advance. The paint is set so that the paint at the paint boundary side end of the paint curtain film 17 flowing down from the paint guide 16 is received in the groove 28. As a result, only the left portion of the roof material 12 from the groove 28 is painted, and the right portion of the roof material 12 is not painted.

At this time, the paint curtain film 17 flowing down from the lower ends of the paint guides 15 and 16 is drawn toward the center side by the surface tension of the paint, and the lateral width of the paint curtain film 17 is reduced. For this reason, the amount of paint near both ends of the paint curtain film 17 flowing down from the lower ends of the paint guides 15 and 16 is larger than that of the other portions. However, as shown in FIG. The paint at the left end of the paint curtain film 17 is collected in the paint collection gutter 27 without being attached to the roof material 12 while being positioned outside the material 12, and the right end (paint boundary side end) of the paint curtain film 17. The excess paint is collected in the groove 28. Thereby, the paint curtain film 1
7 with a curtain film of uniform thickness excluding both ends
Can be applied, and the coating film applied to the surface of the roofing material 12 can be made uniform.

Conventionally, the thickness of the coating film near the coating boundary becomes thick, which causes the coating drying time to be prolonged or causes foaming. However, in the above-described embodiment, the coating curtain film 17 has a coating boundary side end portion. By collecting the excess paint in the groove 28, the paint film in the vicinity of the paint boundary does not need to be thick, and the paint drying time can be shorter than before. If the paint drying time is shortened, the paint in the groove 28 may be insufficiently dried. However, even if the roofing material 12 is piled up and left after the drying process, the paint in the groove 28 is stacked thereon. The roof material 12 does not adhere to the material 12 because the wet paint in the groove 28 does not adhere to each other.
In addition, even when the roofing materials 12 are stacked, the paint in the groove 28 proceeds to dry, and the paint in the groove 28 eventually becomes completely cured, so that there is no problem at all.

In the above embodiment, the unnecessary paint collecting gutter 21 is attached to the coating boundary position adjusting mechanism 26. Therefore, by adjusting the position of the paint guide 16, the unnecessary paint collecting gutter 21 can be adjusted at the same time. In addition, the work of adjusting the position of the unnecessary paint collecting gutter 21 can be omitted, and the position adjusting operation can be easily performed.

In the above embodiment, the paint curtain film flowing down from the paint outlet of the paint hopper 14 is divided into a paint curtain film 17 used for painting and an unnecessary paint curtain film 18 not used for painting. In the second embodiment of the present invention shown in FIG. 5, the paint outlet 18 of the paint hopper 14 is configured to collect the paint 18 in the waste paint collecting gutter 21 attached to the paint boundary position adjusting mechanism 26. The unnecessary paint area (the area on the right side of the paint guide 16 on the paint boundary side) is sealed with a seal material 29 so that an unnecessary paint curtain film is not formed, and the unnecessary paint leaking from the seal material 29 is removed by the paint hopper 14. It is received by the waste paint collecting gutter 30 attached to the lower surface and the lower paint collecting gutter 27 is received.
It is designed to be poured inside. In the second embodiment, the position adjusting bolt 32 of the coating boundary position adjusting mechanism 31 is extended to the left and connected to the intermediate portion of the coating guide 16 on the coating boundary side. Part 2
By rotating the position adjustment bolt 32 in the left-right direction by rotating the 5, the position of the lower end of the paint guide 16 on the coating boundary side can be adjusted in the left-right direction.

In the third embodiment of the present invention shown in FIG. 6, a plurality of paint outlets in the paint outlet of the paint hopper 14 (portion on the paint boundary side on the right side of the paint guide 16). Rod-shaped or plate-shaped inclined paint guide 33
And the inclined paint guides 33 guide the unnecessary paint obliquely downward to the right and flow it into the paint collection gutter 27 at the lower part. In the middle of the position adjusting bolt 32, a square frame portion 32a for avoiding the inclined paint guide 33 is provided.
The inclined paint guide 3 is provided in the square frame portion 32a.
3 is arranged so as not to hit.

In each of the embodiments described above, the screw portion 25 of the coating boundary position adjusting mechanism 26, 31 is manually rotated to adjust the position of the lower end of the coating guide 16, but the screw portion 25 is driven. The position of the lower end of the paint guide 16 may be adjusted by controlling the operation of the motor.

In addition, the present invention may be modified in various ways without departing from the gist of the present invention, such as partial coating of other building materials such as exterior materials and interior materials other than the roof material 12 as the material to be coated. Can be implemented.

[0022]

As is apparent from the above description, according to the method for coating a building material of the first aspect of the present invention, a building guide is provided by a paint guide attached to a predetermined position of a paint outlet of a curtain flow coater in a hanging manner. Set paint boundary position of material
With this configuration, it is possible to eliminate the coating variation at the coating boundary when the building material is partially coated by the coating guide, and to perform the high quality partial coating. Only
Along the border between painted and unpainted parts
Grooves that extend through
To collect the excess paint at the edge of the paint curtain membrane
By using it as a paint pool,
Coating film can be prevented from becoming too thick,
In addition, shortening of paint drying time can be realized, and
At the time of construction, the ditch of building materials should be drained to prevent rainwater from entering.
Can be used to improve waterproofing.
Wear.

Further , in the present invention, the position of the coating boundary is adjusted.
The mechanism allows the position of the lower end of the paint guide to be adjusted as desired
So that the paint
It is easy to adjust the position of the coating border side edge of the coating film.
Wear. Further, in claim 3 , the coating boundary position adjusting mechanism includes:
A waste paint collection gutter was installed to collect the waste paint.
By adjusting the position of the paint guide, the position of the unnecessary paint collecting gutter can be adjusted at the same time, so that the work of adjusting the position of the unnecessary paint collecting gutter can be omitted, and the position adjusting work is easy.

[0024]

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, in which (a)
Is a front view of the curtain flow coater, and (b) is a side view thereof.

FIG. 2 is a front view of a main part for explaining the operation of a coating boundary position adjusting mechanism.

FIG. 3 is a plan view of a roofing material.

FIG. 4 is a construction plan of the roofing material.

FIG. 5 shows a second embodiment of the present invention, in which (a)
Is a front view of the curtain flow coater, and (b) is a side view thereof.

FIG. 6 shows a third embodiment of the present invention, in which (a)
Is a front view of the curtain flow coater, and (b) is a side view thereof.

FIG. 7 is a perspective view showing a conventional curtain flow coater.

[Explanation of symbols]

11: curtain flow coater, 12: roofing material (building material), 13: belt conveyor, 14: paint hopper, 1
5, 16: paint guide, 17: paint curtain film, 18:
Unused paint curtain film, 19, 20 ... Unused paint guide, 2
DESCRIPTION OF SYMBOLS 1 ... Unused paint collection gutter, 24 ... Position adjustment bolt, 26 ... Paint boundary position adjustment mechanism, 27 ... Paint collection gutter, 28 ... Groove, 2
9: Sealing material, 30: Unused paint collecting gutter, 31: Coating boundary position adjusting mechanism, 32: Position adjusting bolt, 33: Slant paint guide.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-35880 (JP, A) JP-A-60-87875 (JP, A) JP-A-4-190875 (JP, A) JP-A 63-87 65978 (JP, A) (58) Fields studied (Int. Cl. ⁷ , DB name) B05D 1/00-7/26 E04D 1/28

Claims (3)

(57) [Claims] 1. A method of partially coating a building material conveyed by a conveyor with a paint flowing down in a curtain form from a slit-shaped paint outlet of a curtain flow coater, comprising: by coating the guide attached to the hanging shape to a predetermined position and sets the boundary position between the painted portion and the non-painted parts of the building element, before
On the building materials, along the border between painted and unpainted parts
An extended groove is formed, and when painting, this groove is used as a paint pool.
A coating method for building materials, characterized in that it is used as a drain groove after construction . 2. A paint boundary position connected to the paint guide.
The position of the lower end of the paint guide is adjusted by the adjustment mechanism.
The coating part is moved in a direction substantially perpendicular to
The method for coating a building material according to claim 1, wherein a boundary position between the non-painted portion and the non-painted portion is adjusted . 3. The car-bounding position adjusting mechanism further comprises:
From the paint outlet of the Tenflow coater to the unpainted part side
To collect the unnecessary paint flowing down to above the building material.
Attach paint collection gutter and adjust the position of the paint guide
The method for coating a building material according to claim 2 , wherein the position of the unnecessary paint collecting gutter is adjusted at the same time .