JPS6115744B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a floor coating apparatus particularly suitable for surface coating of tennis courts, line painting, etc.

When spray painting a large floor surface such as a tennis court, place a spray device with a spray gun and a paint storage container on a trolley, and carry out the spraying process by holding the spray gun in your hand while towing it. I try to spray it evenly,
Creating a seamless border between adjacent painted surfaces requires considerable skill, and the work is surprisingly hard work. On the other hand, when working outdoors, the wind can blow paint away, causing not only uneven paint blowing but also a source of pollution if there are adjacent houses.

Therefore, the purpose of this invention is to
To provide a floor coating device capable of uniformly spraying paint onto a floor surface and capable of producing a good finish even when working outdoors without being affected by wind or the like.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, this coating apparatus 1 includes a truck 4 having a pair of front wheels 2 and a pair of rear wheels 3, respectively. This truck 4 is a self-propelled type that travels at a constant speed, and a motor 8 for driving the front wheels 2 via a pair of pulleys 5, 6 and a belt 7 is installed at the front portion of the truck 4.
A spray device main body 9 is installed in the center of the truck 4, and its main part is covered by a box-shaped case 10. In addition, at the front of the trolley 4,
A handle 11 is fixedly attached. This handle 1
A shelf 12 is installed parallel to the cart 4 between the housing 1 and the case 10, and a paint storage container 13 is placed on the shelf 12. The paint stored in the paint storage container 13 is introduced into the spray device main body 9 through a hose 14.

On the other hand, the case 10 has a partition wall 15 in the middle part.
is provided, thereby forming a booth 16 at the rear of the case 10. Inside this booth 16, two parallel guide rods 17, 17 installed perpendicular to the traveling direction of the trolley 4 are provided.
A spray gun 19 connected to the spray device main body 9 by 8 is mounted with its gun head facing downward. And this spray gun 19
Although not shown in the drawings, they are reciprocated along the guide rods 17, 17 by, for example, a known driving means such as a wire pulling type. Further, a rectangular opening 20 that opens toward the floor surface to be coated is provided on the bottom of the booth 16.
The paint is sprayed onto the floor through the pipe. Around this opening 20, as shown in FIG. 3, a gutter-shaped hanging stop 21 is provided, which is formed by bending the bottom wall of the booth 16 inward. The paint scattered on the inner wall of the booth 16 travels along the inner wall and accumulates on the sag stop 21, and hardly drips onto the floor. Further, as shown in FIG. 2, the front wheels 2 and the rear wheels 3 described above are located inside the width of the opening 20 of the booth 16, and the booth 16 is located on the trolley 4 so that the rear wheels 3 It is located at the rear. In this case, the center of gravity of the coating device 1 is located in front of the rear wheels 3,
Its stability is ensured. The paint width is
Since it is restricted by the opening 20 of the booth 16,
Each wheel 2, 3 is positioned inside the coating width, so that coating can be smoothly connected to adjacent surfaces to be coated. Also, since the spray is done behind the ground contact point of each wheel 2, 3, the painted surface of the wheels 2, 3 is sprayed.
There will be no traces of 3 cars. A marker 22 is installed on the rear side wall of the case 10 to move the coating device 1 in accordance with the ink marked on the floor surface in advance.

Next, the operation of this invention will be explained. Operate the motor 8 to move the trolley 4 at a constant speed,
At the same time, the spray device main body 9 is operated to blow out paint from the spray gun 19.
Further, as shown by arrows in FIG. 3, the spray gun 19 is reciprocated in a direction perpendicular to the traveling direction of the truck 4. The paint blown out from the spray gun 19 is applied to the floor surface 23 through the opening 20 of the booth 16, forming a coating film 24. This coating film 24 has a constant width regulated by the opening 20 of the booth 16, and is formed in a band shape along the travel path of the truck 4. In this case, the spray gun 19 is reciprocating as described above, and the trolley 4 moves at a constant speed, so the coating film 24
will be formed uniformly. The traveling direction of the trolley 4 can be changed by operating the handle 11, but in that case, a marking line 25 is drawn in advance along the floor surface to be painted, and while aligning the marker 22 with the marking line 25, It is convenient to implement. In addition, when applying the coating in the lateral direction of the coating film 24 as described above, it is sufficient to move the cart 4 with each wheel 2, 3 close to the side of the coating film 24, and the coating film 24
The wheels 2 and 3 do not come into contact with each other, and the painting is seamlessly joined.

Incidentally, as shown in FIG. 4, the spray gun 19 may be installed in the booth 16 so that its gun head swings as shown by the arrow in the figure. In this case as well, the spray direction reciprocates in a direction perpendicular to the traveling direction of the trolley 4, and a uniform coating film 24 is formed.

As is clear from the description of the embodiments described above, according to the present invention, since the spray gun is installed inside the booth, a good finish can always be expected even outdoors without being affected by wind, etc. Since the trolley moves at a constant speed and the spray gun reciprocates in a direction perpendicular to its moving direction, a uniform coating can be formed without requiring any skill. Furthermore, since each wheel of the trolley is installed inside the painting width, the painting is seamless.
Overall, the painting operation is done automatically, which improves work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a floor coating device according to the present invention, FIG. 2 is a plan view of the device, FIG. 3 is a sectional view taken along the line - in FIG. 2, and FIG. FIG. 3 is a longitudinal cross-sectional view showing an example. In the figure, 1 is a floor coating device, 2 is a front wheel, 3 is a rear wheel, 4 is a trolley, 5 and 6 are pulleys, 7 is a belt, 8 is a motor, 9 is a spray device body, 12 is a shelf, and 13 is a Paint storage container, 14 is a hose, 16 is a booth, 17 is a guide rod, 18 is a hose, 19 is a spray gun, 20 is an opening, 21 is a hanging stop, 2
3 is the floor surface.

Claims (1)

[Scope of Claims] 1. A truck having a drive device for traveling at a constant speed is provided, a paint storage container and a spray device including a spray gun are placed on the truck, and while the truck is traveling, The floor coating device sprays the paint in the container from the spray gun onto the floor surface to be painted in the form of a band, wherein the trolley surrounds the spray gun and is opened toward the floor surface to be painted. The spray gun includes a booth having an opening, and the spray gun sprays the paint from inside the booth along an imaginary vertical plane perpendicular to the running direction of the truck through the opening and onto the floor surface to be painted in the form of a strip with a constant width. A floor painting device characterized by spraying. 2. The floor coating apparatus according to claim 1, wherein the spray gun is installed in the booth so as to be able to reciprocate in parallel to the floor surface to be coated. 3. The floor coating apparatus according to claim 1, wherein the spray gun is mounted so as to be swingable within the booth. 4. The floor coating apparatus according to claim 1, wherein a gutter-shaped paint dripping prevention member is provided around the opening of the booth. 5. In claim 1, the trolley has a front wheel and a rear wheel installed inside the coating width of the paint, and the booth is installed behind the rear wheels on the trolley. A floor coating device that is characterized by: