JP2913174B1 - How to apply paint on the surface to be coated - Google Patents

Abstract

The present invention provides a method for applying a coating material to a surface to be coated, which enables a thin coating film to be uniformly applied to the surface to be coated in a short time without coating. SOLUTION: A rod-shaped sponge 30 having substantially the same length as the fixing jig 20 is attached to a rod-shaped fixing jig 20 having substantially the same length as the width of a window glass 40, and the upper side of the sponge 30 is cut obliquely. Paint applying jig 10 having a tapered surface 33
And paint. Sponge 30 impregnated with paint
Is pressed horizontally at a position lower than the upper edge of the window glass 40 by a predetermined height to drop excess paint in the sponge 30, and the pressed paint application jig 10 is moved to the upper edge of the window glass 40 as it is, In FIG. 5, the paint application jig 10 is rotated upward while being pressed, and then returned to the original position. Thereafter, the paint application jig 10 is moved to the lower edge of the window glass 40, and the paint application jig moved to the lower edge. After rotating downward while pressing 10, it is separated from the window glass 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for applying a coating material to a surface to be coated which is suitable for applying a coating material to a surface such as glass.

[0002]

2. Description of the Related Art Conventionally, a coating material that reflects (cuts) infrared rays or ultraviolet rays, for example, is applied to a surface to be applied such as a window glass of a building, a glass of a telephone box, or a show window. As a method therefor, there is a method of applying with a brush, a roller or the like.

[0003] However, when a coating material is applied to glass by the above-mentioned methods, uneven coating occurs.

[0004] There is also a method of wiping paint particles on a surface to be coated by spraying.
When a room temperature-curable paint (a paint that is liquid and gradually cures at room temperature over a predetermined time when applied) is used as a paint, after the paint particles adhere to the application surface, Before it cures, it sags, which also results in uneven coating.

For this reason, a method called a flow coating method has been used as a method for uniformly applying this type of room temperature-curable paint over the entire surface to be coated. In this flow coating method, a large amount of paint is applied to the top edge of the surface to be coated, and the paint hangs down over the entire surface to be coated by the weight of the paint itself before the paint hardens, thereby uniformly coating the entire surface to be coated. This is a method of covering with a paint film and waiting for it to cure naturally.

[0006]

However, in the case of the flow coating method, there is a disadvantage that the thickness of the applied paint is thicker at the lower part than at the upper part of the surface to be coated, and it is necessary to wait for the paint to drop naturally. Therefore, there is a disadvantage that the application time is long, and the thickness of the applied paint becomes large as a whole (for example, 7 to 10 μm), so that the amount of the paint to be used increases and the material cost cannot be reduced. There were drawbacks.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a method for applying a coating to a surface to be coated, which enables a thin coating film to be uniformly applied to the surface to be coated in a short time without even coating. Is to provide.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a rod-shaped fixing jig having substantially the same length as the width of a flat surface to be coated. Attach a bar-shaped sponge and apply it to the surface to be coated by coating the coating surface with a tapered surface by obliquely cutting the upper side of the two sides protruding from the fixing jig of the sponge. A step of preparing a paint and impregnating the sponge of the paint application jig with the paint, and pressing the sponge of the paint application jig horizontally at a position lower than the upper end side of the surface to be coated by a predetermined height, thereby forming a surplus in the sponge. A step of dropping a suitable paint on the surface to be applied, a step of moving the pressed paint applying jig as it is to the upper end side of the surface to be applied, and once rotating upward while pressing the paint applying jig at the upper end side And then return to the original position. Moving the paint application jig, which has been returned to above, to the lower end side of the surface to be applied while pressing it against the surface to be applied; And a method of applying the coating material to the surface to be coated. The coating method according to the present invention may be performed manually or by a machine such as a robot.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing a paint application jig 10 used in the present invention, and FIG.
FIG. 3 is an enlarged end view of the sponge 30.

As shown in FIG. 1 and FIG.
Is configured by attaching a rod-shaped sponge 30 to a rod-shaped fixing jig 20. Hereinafter, each component will be described.

The fixing jig 20 has a length substantially equal to the width (for example, 3 to 5 m) of a surface to be coated such as a window glass to be applied by the coating material applying jig 10 (several mm from the width of the surface to be coated). Hollow metal (eg aluminum)
A rectangular rod-shaped body is formed, and a notch opening 21 cut out in one side in the longitudinal direction is provided, so that locking sides 22, 22 are provided above and below the notch opening. Further, a partition plate 23 for vertically partitioning the hollow inside is provided over the entire length.

On the other hand, the sponge 30 is formed in a substantially square rod shape having substantially the same length as the length of the fixing jig 20. The height of the sponge is substantially the same as the height of the hollow portion of the fixing jig 20, and cut lines 31, 31 are provided on the upper and lower surfaces over the entire length in the longitudinal direction. Further, only the upper side of the two sides of the sponge 30 protruding from the fixing jig 20 is provided with a tapered surface 33 obtained by diagonally cutting the upper side. The inclination angle θ of the tapered surface 33 is about 18 ° in this embodiment. The sponge 30 is made of a material having a very fine grain (for example, MF80) so that the sponge can be applied to the surface to be applied so that the sponge does not remain behind.

Then, the sponge 30 shown in FIG. 1 is pushed into the notch opening 21 of the fixing jig 20, and the locking sides 22, 22 are inserted into the upper and lower cut lines 31, 31 to be integrated into FIG. The paint application jig 10 shown is completed.

A method of applying a paint to the window glass 40 as a surface to be applied by using the paint applying jig 10 is as follows.

[Previous Step I] First, as shown in FIG. 4, a mask tape 43 for preventing paint from adhering to the crosspiece is attached to the upper side and the left and right sides of the window glass 40. Further, on the lower side of the window glass 40, a masking tape 43 is provided.
The resin sheet 45 is attached. Resin sheet 45
The reason why is attached is to prevent paint or the like from adhering to parts other than the window glass 40 by receiving a dripping detergent or paint in the following steps.

[Pre-process II] Next, dirt (hand grit, dust, dirt, grease, silicon film, etc.) on the surface of the window glass 40 is removed using a cleaning agent, and finally, it is wiped clean with ethanol and then dried.

[Step 1] First, this paint application jig 1
The entire sponge 30 is impregnated with the paint. In this embodiment, as the coating material, a room temperature curing type (touch dry for 15 to 30 minutes (20 ° C.), which simultaneously cuts out ultraviolet rays and infrared rays,
Hardened enough to be washed in water at room temperature for about 1-3 days)
Which is obtained by dissolving a siloxane-based main component in an alcohol-based solvent.

[Step 2] Next, as shown in FIG. 5 (or FIG. 6A), the paint application jig 10 is moved to a position lower than the upper end side of the window glass 40 by a predetermined height as shown in FIG. 5 (or FIG. 6A). (For example, a position lower by about 20 cm) horizontally, and the pressing force causes the paint containing excess paint to drip from the portion of the sponge 30 that has been largely impregnated with paint, as shown in FIG. The amount of paint impregnated in each part is made uniform. In other words, sponge 30
If a certain portion of the sponge 30 is impregnated with a larger amount of paint than the other portion, a large amount of the paint drips from the portion that has been impregnated to the other portion. The amount is made uniform.

[Step 3] Next, as shown in FIG. 6 (b), the pressed paint application jig 10 is moved upward as it is to the upper edge of the window glass 40.

[Step 4] Next, as shown in FIG. 6 (c), the paint application jig 10 is rotated in the direction of arrow A so as to move upward while pressing the sponge 30 on the upper end side of the window glass 40. After that, it is returned to the original position shown in FIG. The reason for operating the paint application jig 10 in this manner is as follows. That is, in the state shown in FIG.
The sponge 30 does not come into contact with the upper end corner 41 of the window glass 40, and if the paint application jig 10 is lowered as it is, there is a possibility that an unpainted portion may be formed on the upper end corner 41.

Therefore, in the present invention, as described above, the sponge 30 of the paint application jig 10 is once turned upward,
The paint application jig 10 is rotated while being pressed so as to return to the original position shown in FIG. 6B from the state a rotated as shown in FIG. 7 (the arrow shown in FIG. 6C). 7B, the portion near the tapered surface 33 of the sponge 30 moves as shown in states b, c, and d shown in FIG. At the same time, the paint impregnated in the sponge 30 comes out, and the paint can be reliably applied to the upper side of the window glass 40. In addition, since the sponge 30 used in the present invention is provided with the tapered surface 33, the paint application jig 10 can rotate smoothly, and the paint can be smoothly applied to the upper corner 41 of the window glass 40 and a portion immediately below the same at the same speed. The reason will be described later.

[Step 5] Next, as shown in FIGS. 6D and 6E, the paint application jig 10 is returned to the original position shown in FIG. The tool 10 moves toward the lower edge of the window glass 40 while being continuously pressed against the window glass 40 without stopping.

[Step 6] Next, as shown in FIGS. 6 (f) and 6 (g), the paint application jig 10 is rotated downward while pressing it at the lower end side of the window glass 40, Keep pulling them apart. Thus, the paint application jig 1
The rotation of 0 is performed for the same reason as in step 4. That is, in the state shown in FIG. 6E, the sponge 30 does not come into contact with the lower corner 47 of the window glass 40, and when the paint application jig 10 is pulled away from the window glass 40 as it is, the lower corner 4 becomes.
In addition to the danger that the unpainted portion may be formed on the glass 7, when the sponge 30 touching the surface is separated perpendicularly to the surface, the sponge shape is stamped on the glass surface touching the surface. And may not be a clean application surface. Therefore, in the present invention, as shown in FIG. 8, the sponge 30 of the paint application jig 10 is rotated downward from the state r in FIG. The portion changes to the shape of the state s and the state t and rotates, and in the state of FIG. 6 (g), the upper end side Y of the tapered surface 33 of the sponge 30 forms the lower end corner 47 as in the state u. The lower end corner 4
The paint impregnated in the sponge 30 comes out at the same time when the sponge 30 comes into contact with 7, so that the paint can be surely applied to the lower edge portion of the window glass 40. In addition, since the sponge 30 used in the present invention is provided with the tapered surface 33, the paint application jig 10 can rotate smoothly, and the paint can be smoothly applied to the lower corner portion 47 of the window glass 40. The reason will be described later.

[Post-Process] After the paint is applied to the window glass 40 and touch-dried as described above, the mask tape 43 and the resin sheet 45 shown in FIG. 4 are removed.

The reason why the tapered surface 33 is provided on the sponge 30 will be described with reference to the case of the lower end corner 47 in step 6 (the same applies to the upper end corner 41 in step 4).
That is, if the sponge 30 is formed at a right angle in the same manner as the lower end without providing the tapered surface 33 on the upper end,
When the paint application jig 10 is rotated downward in the step 6, that is, in FIG. 6 (f), as shown in FIG. State n
When the paint application jig 10 is rotated, the upper end side Z of the upper edge Z is left on the surface of the window glass 40 in the state n.
The upper end side Z directly jumps in the state of FIG. Therefore, an unpainted portion occurs in the upper q portion of the lower corner portion 47, and even if the portion q is painted, the application speed by the upper end side Z in the portion q becomes considerably faster than other portions. The coating unevenness occurs in the portion q. Further, the force for rotating the paint application jig 10 is strong from the state m to the state n, and the force for rapidly rotating the paint application jig from the state n to the state o is weak. 1
0 could not be rotated, and this could result in uneven coating.

On the other hand, the sponge 3 used in the present invention is
As shown in FIG. 8, when the paint application jig 10 is rotated downward, as shown in FIG. 8, it protrudes as shown in FIG. Because there is no part where it is, the upper end side Y does not bend greatly,
Therefore, the upper end side Y smoothly rotates with the rotation of the paint application jig 10 and moves on the window glass 40 from the state r to the states s, t, and u. For this reason, the coating speed is also constant, and the portion near the lower end corner 47 of the window glass 40 can be made a clean and uniform coating surface.

When the paint was applied by the above-described method using the paint application jig 10, the film thickness was 4 to 5 μm, which was considerably thin and uniform. That is, since the coating is performed using the sponge 30, the film thickness can be reduced as compared with the flow coating method, and the material cost can be reduced.

In the above embodiment, the method of applying the coating material to the window glass 40 has been described. However, the present invention can be applied to the case where the coating material is applied to various other planar coating surfaces other than the window glass 40. Needless to say.

The paint application jig 10 used in the present invention
It is necessary to make the length substantially the same as the width of the window glass 40. This is because, for example, when the paint is applied to the left and right windows separately using the paint application jig 10 having a width that is half the width of the window glass 40, a streak of the paint occurs in the center of the window glass 40. . Therefore, even when the width of the window glass 40 is long, such as a show window, the paint application jig 10 must be lengthened accordingly.
However, it is not possible to prepare a paint coating jig 10 that is too long. In such a case, it is necessary to connect and use a plurality of paint coating jigs 10.

FIG. 10 is a perspective view of a main part showing a connection structure of the paint application jig 10. As shown in the figure, in order to connect the two paint application jigs 10, a “U” -shaped metal plate connection jig 80 is prepared, which is fitted to the outer periphery of the fixing jig 20. . On the upper surface of the connecting jig 80, there are provided six through-threaded female holes 81, and a cylindrical male screw 83 is screwed into each of the female screw holes 81.

Then, the fixing jig 20 is fitted from the rear side of the portion where the end faces of the two paint application jigs 10 are joined together, and the six male screws 83 are screwed into the female screw holes 81 so that the tips are screwed. The two paint application jigs 10 are firmly fixed to each other by being strongly pressed against the upper surface of the fixing jig 20 to be integrated. If the connection structure is configured in this manner, not only can the connection be easily and reliably performed, but also the cost can be reduced because only the connection jig 80 having a simple structure is used.

[0032]

As described above in detail, the following excellent effects can be obtained by using the coating method according to the present invention. A thin coating film can be uniformly applied to the surface to be coated in a short time without coating, and even though it is a method of applying paint using a sponge, paint can be reliably applied from the top edge to the bottom edge of the surface to be coated. It can be painted without leaving unpainted,
In addition, the sponge shape does not remain on the surface to be coated, and the surface to be coated can be made clean.

Since the paint can be applied thinly, the amount of paint used can be reduced, and the material cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a paint application jig 10 used in the present invention.

FIG. 2 is a perspective view of a paint application jig 10;

FIG. 3 is an enlarged end view of the sponge 30.

FIG. 4 is a perspective view showing a state immediately before a paint is applied to a window glass 40, which is a surface to be applied, using a paint application jig 10;

FIG. 5 is a perspective view showing a state in which the paint application jig 10 is pressed against the window glass 40.

FIG. 6 is a view showing each step of a method of applying a paint to the window glass 40.

FIG. 7 is an enlarged schematic view of a main part showing the operation of the sponge 30 at the upper end corner 41 of the window glass 40.

FIG. 8 is an enlarged schematic view of a main part showing an operation of the sponge 30 at a lower end corner portion 47 of the window glass 40.

FIG. 9 is an enlarged schematic view of a main part showing an operation at a lower end corner portion 47 of the window glass 40 of the sponge 30 having no tapered surface 33.

FIG. 10 is a perspective view of a main part showing a connection structure of the paint application jig 10;

[Explanation of symbols]

 Reference Signs List 10 paint application jig 20 fixing jig 30 sponge 33 tapered surface

Claims (1)

(57) [Claims] 1. A rod-shaped sponge having a length substantially the same as the length of the fixing jig is attached to a rod-shaped fixing jig having a length substantially equal to the width of the flat surface to be coated. A paint application jig having a tapered surface by obliquely cutting the upper side of the two sides protruding from the above, and a paint to be applied to the surface to be applied are prepared. Impregnating the sponge of the paint application jig horizontally at a position lower than the upper end side of the surface to be applied by a predetermined height to drip excess paint in the sponge onto the surface to be applied. A step of moving the paint application jig as it is to the upper end side of the surface to be coated, a step of once turning the paint application jig upward while pressing the paint application jig on the upper end side, and then returning the paint application jig to its original position; The paint application jig returned to A step of moving to the lower end side of the surface to be coated as it is, and a step of rotating downward while pressing the paint application jig moved to the lower side, and then separating the jig from the surface to be coated. How to apply paint on the surface to be applied.